Abrégé

Disclosed in the present application are an electric motor and an electric appliance. The electric motor comprises a stator assembly and a rotor assembly, wherein the stator assembly comprises a stator iron core provided with an inner stator hole therein; the rotor assembly is arranged in the inner stator hole, and comprises a rotor iron core and a plurality of rotor magnetic poles which are arranged on the rotor iron core in a circumferential direction of the rotor iron core and divide the rotor iron core into a plurality of iron core units; an outer contour of at least one iron core unit comprises one or more arc segments, and the stator iron core has a circular virtual inner contour; and a first gap is formed between the outer contour of the iron core unit and the virtual inner contour of the stator iron core, and the first gap located on a first side of the iron core unit is larger than the first gap located on a second side of the iron core unit, the first side being the side of the rotor assembly in a rotating direction, and the second side being the side of the rotor assembly in a reverse rotating direction.

Classes IPC  ?

• H02K 1/14 - Noyaux statoriques à pôles saillants
• H02K 1/276 - Aimants encastrés dans le noyau magnétique, p.ex. aimants permanents internes [IPM]

Abrégé

Provided in the present application are a stator punching sheet, an electric motor, a fan and an electrical appliance. The stator punching sheet comprises a yoke portion and a tooth portion, wherein a first end of the tooth portion in the radial direction is connected to the yoke portion, and the tooth portion is rectangular; and a first edge is provided on the side of two sides of the yoke portion in the radial direction that is close to the tooth portion, a second edge is provided on the side of two sides of the tooth portion in the circumferential direction that is close to the first edge, and the angle between the second edge and the first edge is greater than 90 degrees.

Classes IPC  ?

• H02K 1/14 - Noyaux statoriques à pôles saillants
• H02K 1/16 - Noyaux statoriques à encoches pour enroulements

Abrégé

A stator structure, a motor, and electrical equipment are provided. The stator structure includes a stator core that includes a stator yoke and multiple stator teeth. The stator teeth are arranged on the stator yoke. A stator slot is formed between two adjacent stator teeth. Each stator tooth includes a tooth body and a tooth boot. The tooth body is arranged on the stator yoke. The tooth boot is arranged on the tooth body. The stator structure further includes a winding arranged on the stator teeth. The winding includes flat wires wound on the stator teeth in a concentrated manner. The flat wires is wound on the stator teeth in multiple layers. The number of flat wires in the layer of the winding away from the stator teeth is not more than the number of flat wires in the layer of the winding close to the stator teeth.

Classes IPC  ?

• H02K 3/18 - Enroulements pour pôles saillants
• H02K 1/14 - Noyaux statoriques à pôles saillants
• H02K 3/32 - Enroulements caractérisés par la configuration, la forme ou la réalisation de l'isolement

Abrégé

A stator lamination, a stator structure, a motor structure, and a laundry treatment apparatus are provided. The stator lamination includes a stator yoke and multiple stator teeth arranged on the stator yoke, and tooth shoes arranged on the ends of the stator teeth distant from the stator yoke. The stator teeth are circumferentially distributed around the axis of the stator lamination. A winding groove is formed between two adjacent stator teeth. A first notch and a second notch, arranged in the radial direction of the stator teeth, are formed between two adjacent tooth shoes. The notch width of the first notch is different from that of the second notch.

Classes IPC  ?

• H02K 1/16 - Noyaux statoriques à encoches pour enroulements
• H02K 1/276 - Aimants encastrés dans le noyau magnétique, p.ex. aimants permanents internes [IPM]
• H02K 21/14 - Moteurs synchrones à aimants permanents; Génératrices synchrones à aimants permanents avec des induits fixes et des aimants tournants avec des aimants tournant à l'intérieur des induits

Abrégé

A rotor structure, an electric motor structure and a clothing treating device are provided. The rotor structure includes a rotor iron core, a permanent magnet and a magnetic barrier. The rotor iron core includes rotor punching sheets arranged in a stacked manner. Permanent magnet slots are provided in the rotor iron core and the permanent magnet is disposed in the permanent magnet slots. The rotor structure rotates in one direction or two directions in a circumferential direction. In the rotation direction of the rotor structure, the magnetic barrier is provided on at least one side of the permanent magnet slot, and two ends of the magnetic barrier face an outer edge of the permanent magnet and an outer edge of the rotor iron core, respectively. The magnetic barrier is provided on a first punching sheet or a second punching sheet of the rotor punching sheets.

Classes IPC  ?

• H02K 1/276 - Aimants encastrés dans le noyau magnétique, p.ex. aimants permanents internes [IPM]
• H02K 1/16 - Noyaux statoriques à encoches pour enroulements

Abrégé

Provided in the present application are a rotor assembly, an electric motor, an electrical appliance, and a vehicle. The rotor assembly is used for the electric motor; the electric motor comprises a stator assembly; and the rotor assembly is sleeved on an outer side of the stator assembly, and comprises a plurality of iron core blocks and a plurality of magnetic assemblies. The plurality of iron core blocks are arranged in a circumferential direction; and the plurality of magnetic assemblies are arranged in the circumferential direction, and each of the plurality of magnetic assemblies comprises at least three magnetic members, at least one of the at least three magnetic members being arranged on the inner periphery of the plurality of iron core blocks, and at least two of the magnetic members being arranged between two adjacent iron core blocks of the plurality of iron core blocks.

Classes IPC  ?

• H02K 1/2791 - Aimants montés en surface; Aimants sertis

Abrégé

Provided in the present application are an end cover, an electric motor and a vehicle. The end cover is used for the electric motor. The electric motor comprises a stator assembly and a rotor assembly, wherein the rotor assembly is sleeved on the outer side of the stator assembly. The end cover comprises a body and a blade assembly, wherein the body can rotate along with the rotor assembly; and the blade assembly is arranged on a first side of the body facing the rotor assembly, and the blade assembly comprises a plurality of blades, the plurality of blades being arranged in the circumferential direction of the body.

Classes IPC  ?

• H02K 1/20 - Parties fixes du circuit magnétique avec des canaux ou des conduits pour l'écoulement d'un agent de refroidissement

Abrégé

A rotor structure, a motor structure, and a laundry treatment device are provided. The rotor structure has a rotor iron core, multiple permanent magnets and multiple magnetic barriers. The rotor has multiple permanent magnet slots arranged along a circumferential direction of the rotor core. The permanent magnets are disposed in the permanent magnet slots respectively. The magnetic barriers are disposed on the rotor iron core. The rotor structure can rotate unidirectionally or bidirectionally in the circumferential direction. At least one side of a permanent magnet slot is provided with the magnetic barriers in the rotation direction of the rotor structure. Two ends of each magnetic barrier face towards the permanent magnet corresponding to the permanent magnet slot and towards the outer edge of the rotor core, respectively.

Classes IPC  ?

• H02K 1/276 - Aimants encastrés dans le noyau magnétique, p.ex. aimants permanents internes [IPM]

Abrégé

The present application provides a stator assembly, a motor and a servo system. The stator assembly comprises a stator core, a plurality of first coils, a plurality of second coils and a manifold plate; the stator core comprises a yoke and a plurality of stator teeth, the plurality of stator teeth are distributed in the circumferential direction of the yoke, and a winding groove is formed between adjacent stator teeth of the plurality of stator teeth; the plurality of first coils are embedded in the winding grooves; and the plurality of second coils are embedded in the winding grooves; the manifold plate comprises a plurality of first wire receiving parts, and the plurality of first wire receiving parts are respectively connected to the plurality of first coils and to the plurality of second coils, enabling the plurality of second coils to be in delta connection, and the plurality of first coils to be in wye connection with the plurality of second coils. In the stator assembly provided in the present application, the plurality of first coils and the plurality of second coils form a combination of delta and wye connections, improving the winding coefficient, simultaneously reducing low-order magnetic potential harmonics, further improving the power density of the motor and improving torque ripple.

Classes IPC  ?

• H02K 3/28 - Schémas d'enroulements ou de connexions entre enroulements
• H02K 3/12 - Enroulements caractérisés par la configuration, la forme ou le genre de construction du conducteur, p.ex. avec des conducteurs en barre disposés dans des encoches
• H02K 1/14 - Noyaux statoriques à pôles saillants
• H02K 1/16 - Noyaux statoriques à encoches pour enroulements

Abrégé

Provided in the present application are a stator assembly, an electric motor, and a servo system. The stator assembly comprises a stator iron core, a plurality of first coils, and a plurality of second coils, wherein the stator iron core comprises a yoke iron core and a teeth iron core, the teeth iron core being connected to the yoke iron core; the teeth iron core comprises a plurality of first punching sheets, which are arranged in an axial direction, and each of which comprises a plurality of first teeth arranged in a circumferential direction of the yoke iron core, the adjacent first teeth in the plurality of first teeth defining a first closed wire slot with the yoke iron core; the plurality of first coils are wound around the stator iron core; the plurality of second coils are wound around the stator iron core and alternately arranged with the plurality of first coils; and the plurality of second coils are in angular connection with each other, and the plurality of first coils are in star connection with the plurality of second coils.

Classes IPC  ?

• H02K 1/14 - Noyaux statoriques à pôles saillants
• H02K 1/16 - Noyaux statoriques à encoches pour enroulements
• H02K 3/28 - Schémas d'enroulements ou de connexions entre enroulements
• H02K 3/52 - Fixation des enroulements de pôles saillants ou de leurs connexions

Abrégé

A fan and an electrical appliance. The fan comprises a stator assembly (100), an electrical control component (200), an air duct assembly (300), and a connecting member (400); the stator assembly (100) comprises a stator core (110) and a frame (120), and the frame (120) is provided outside the stator core (110); the electrical control component (200) is provided on a first side of the stator assembly (100) in the axial direction; the air duct assembly (300) is provided on the side of the stator assembly (100) away from the electrical control component (200); the connecting member (400) penetrates through the electrical control component (200), the stator assembly (100), and the air duct assembly (300); a first positioning portion (130) is provided on the side of the frame (120) close to the electrical control component (200), the electrical control component (200) is provided with a second positioning portion (210), and the second positioning portion (210) works in conjunction with the first positioning portion (130). A first side of the frame (120) of the fan faces the electrical control component (200), the first side of the frame (120) is provided with the first positioning portion (130), the electrical control component (200) is provided with the second positioning portion (210), and the first positioning portion (130) works in conjunction with the second positioning portion (210), so as to implement positioning of the electrical control component (200), thereby simplifying the structure required for positioning the electrical control component (200), reducing the number of fan parts, and thus reducing the weight of the fan.

Classes IPC  ?

• F04D 29/40 - Carters d'enveloppe; Tubulures pour le fluide énergétique
• F04D 27/00 - Commande, p.ex. régulation, des pompes, des installations ou des systèmes de pompage spécialement adaptés aux fluides compressibles
• F04D 25/06 - Ensembles comprenant des pompes et leurs moyens d'entraînement la pompe étant entraînée par l'électricité
• F04D 29/60 - Montage; Assemblage; Démontage

Abrégé

The present application provides a rotor assembly and an electric motor. The rotor assembly comprises a first rotor core, a plurality of first permanent magnets, and a plurality of second permanent magnets, wherein the first rotor core comprises a first core body, a plurality of first slots, a plurality of second slots, and first flux barriers; the plurality of first slots and the plurality of second slots are alternately arranged in the circumferential direction of the first core body; the plurality of first slots respectively extend to gaps between two adjacent second slots among the plurality of second slots; the first flux barriers are arranged between first slots and second slots, which are adjacent to each other, among the plurality of first slots and the plurality of second slots; the plurality of first permanent magnets are respectively arranged in the plurality of first slots; and the plurality of second permanent magnets are respectively arranged in the plurality of second slots.

Classes IPC  ?

• H02K 1/276 - Aimants encastrés dans le noyau magnétique, p.ex. aimants permanents internes [IPM]
• H02K 1/22 - Parties tournantes du circuit magnétique

Abrégé

Motor rotor position observation methods and devices, a rotor position observer and a medium. A method comprises: when a high-frequency pulse is injected into the d-axis of a motor, determining six comparison values of three-way modulation (S101); according to comparison value Act22, determining first and second current sampling trigger values (S102); controlling the motor according to the six comparison values, sampling the current of the motor according to the first and second current sampling trigger values to acquire first and second sampled currents, and determining a q-axis current of the motor according to the first and second sampled currents (S103); according to the second current sampling trigger value and comparison value Act12, determining an effective voltage vector which acts after triggering of the second current sampling trigger value (S104); and compensating for the q-axis current according to the effective voltage vector, and estimating the rotor position of the motor according to the compensated q-axis current (S105).

Classes IPC  ?

• H02P 21/14 - Estimation ou adaptation des paramètres des machines, p.ex. flux, courant ou tension
• H02P 21/18 - Estimation de la position ou de la vitesse
• H02P 21/22 - Commande du courant, p.ex. en utilisant une boucle de commande
• H02P 21/24 - Commande par vecteur sans utilisation de détecteurs de position ou de vitesse du rotor

Abrégé

NewNewNew (S103); controlling the motor according to the adjusted six comparison values, and performing current sampling on the motor according to the first current sampling trigger value and the second current sampling trigger value to obtain a first sampling current and a second sampling current (S104); and estimating a rotor position of the motor according to the first sampling current and the second sampling current (S105).

Classes IPC  ?

• H02P 21/14 - Estimation ou adaptation des paramètres des machines, p.ex. flux, courant ou tension

Abrégé

A rotor (100) of an electric motor (1000), and the electric motor (1000). The rotor (100) comprises a rotor iron core (10) and a plurality of permanent magnet groups (20), the plurality of permanent magnet groups (20) being mounted on the rotor iron core (10) and distributed in a circumferential direction of the rotor iron core (10), and each permanent magnet group (20) comprising an outer permanent magnet (21) and an inner permanent magnet (22) which are connected in series in a magnetic circuit, wherein in a radial direction of the rotor iron core (10), the inner permanent magnet (22) is located on the side of the corresponding outer permanent magnet (21) that is close to the axis of the stator iron core (10); the coercive force of the outer permanent magnet (21) is greater than that of the inner permanent magnet (22); and the inner permanent magnet (22) is a cerium-containing neodymium-iron-boron permanent magnet and/or a heavy-rare-earth-free neodymium-iron-boron permanent magnet.

Classes IPC  ?

• H02K 1/276 - Aimants encastrés dans le noyau magnétique, p.ex. aimants permanents internes [IPM]

Abrégé

Provided in the present application are a stator structure, an electric motor and an electrical device. The stator structure comprises: a stator yoke portion; and at least two stator teeth which are arranged on the stator yoke portion, wherein a notch is formed between tooth tops of every two adjacent stator teeth, at least some of the stator teeth comprise at least two auxiliary teeth, a groove is formed between every two adjacent auxiliary teeth on the same stator tooth, and in a circumferential direction of the stator structure, the width of the groove is unequal to the width of the notch. By means of the stator structure provided in the present application, the size of the groove between every two adjacent auxiliary teeth and the size of the notch between every two adjacent stator teeth are set to be unequal, the degree of uniformity of the distribution of the auxiliary teeth on all the stator teeth in the circumferential direction can be changed, the period number of air gap magnetic conductance is reduced, and the magnetic density harmonic component is increased, so that the output torque of the electric motor is further improved.

Classes IPC  ?

• H02K 1/14 - Noyaux statoriques à pôles saillants
• H02K 3/52 - Fixation des enroulements de pôles saillants ou de leurs connexions
• H02K 3/28 - Schémas d'enroulements ou de connexions entre enroulements
• H02K 1/27915 - Aimants façonnés pour modifier l’entrefer entre les aimants et le stator
• H02K 1/2788 - Rotors externes l'axe de magnétisation des aimants étant perpendiculaire à l’axe du rotor le rotor étant formé d’un seul aimant ou de plusieurs aimants juxtaposés axialement

Abrégé

The present application provides a stator assembly, a motor, and an electrical device. The stator assembly comprises: stator main teeth, wherein each stator main tooth comprises a tooth body and a tooth shoe, the tooth shoe is connected to one end of the tooth body, at least two auxiliary teeth are provided at the end of the tooth shoe furthest from the tooth body, and slots are each formed between two adjacent auxiliary teeth; and permanent magnets provided in the slots. According to the stator assembly provided by the present application, a permanent magnet is provided in a slot between adjacent auxiliary teeth, so that a magnetic flux density harmonic component generated by the modulation between the stator assembly and a rotor assembly is further increased, more working harmonics are generated, and an output torque of the motor is further improved.

Classes IPC  ?

• H02K 1/14 - Noyaux statoriques à pôles saillants
• H02K 1/16 - Noyaux statoriques à encoches pour enroulements
• H02K 3/04 - Enroulements caractérisés par la configuration, la forme ou le genre de construction du conducteur, p.ex. avec des conducteurs en barre
• H02K 3/12 - Enroulements caractérisés par la configuration, la forme ou le genre de construction du conducteur, p.ex. avec des conducteurs en barre disposés dans des encoches

Abrégé

The present application provides a stator assembly, a motor, and an electrical appliance. The stator assembly comprises: a first stator comprising a first yoke part and at least two first teeth, wherein the at least two first teeth are arranged on the outer wall of the first yoke part, a first stator slot is formed between every two adjacent first teeth, a plurality of first slots are provided on the outer wall of the first stator, and the plurality of first slots at least comprise first stator slots; and a second stator comprising a second yoke part and at least two second teeth. The second yoke part is coaxially arranged with the first yoke part and sleeved outside the first yoke part; the at least two second teeth are arranged on the inner wall of the second yoke part; a rotor assembly is placed between the first stator and the second stator; the first stator slot has a slot center line in the radial direction of the first stator; each second tooth has a tooth body center line in the radial direction of the second stator; an angle between the slot center line and the tooth body center line is greater than or equal to 0 degree and less than or equal to 72/Ns degrees in the rotating direction of a rotor, Ns being the number of first slots.

Classes IPC  ?

• H02K 1/14 - Noyaux statoriques à pôles saillants
• H02K 1/16 - Noyaux statoriques à encoches pour enroulements
• H02K 3/04 - Enroulements caractérisés par la configuration, la forme ou le genre de construction du conducteur, p.ex. avec des conducteurs en barre
• H02K 3/12 - Enroulements caractérisés par la configuration, la forme ou le genre de construction du conducteur, p.ex. avec des conducteurs en barre disposés dans des encoches
• H02K 3/28 - Schémas d'enroulements ou de connexions entre enroulements
• H02K 3/52 - Fixation des enroulements de pôles saillants ou de leurs connexions
• H02K 1/27915 - Aimants façonnés pour modifier l’entrefer entre les aimants et le stator
• H02K 16/04 - Machines avec un rotor et deux stators

Abrégé

Provided in the present application are a prefabricated rotor punching sheet, a rotor assembly, an electric motor and an electrical device. The prefabricated rotor punching sheet comprises: a strip-shaped punching sheet, wherein the strip-shaped punching sheet comprises at least two magnetically conductive portions arranged at intervals in the lengthwise direction of the strip-shaped punching sheet; and connecting portions that are connected between every two adjacent magnetically conductive portions, wherein the magnetically conductive portions and the connecting portions are alternately distributed in the lengthwise direction of the strip-shaped punching sheet. According to the present application, the costs of a prefabricated rotor punching sheet and an electric motor using the prefabricated rotor punching sheet can be reduced, thereby ensuring that an outer circle of a rotor iron core formed by the prefabricated rotor punching sheet is more regular, and that an air gap between a rotor assembly and a stator assembly is uniform, thus preventing the phenomenon of aggravation of vibration noise of the electric motor.

Classes IPC  ?

• H02K 1/276 - Aimants encastrés dans le noyau magnétique, p.ex. aimants permanents internes [IPM]
• H02K 1/28 - Moyens de montage ou de fixation des parties magnétiques tournantes sur ou aux structures constituant le rotor
• H02K 3/28 - Schémas d'enroulements ou de connexions entre enroulements
• H02K 1/14 - Noyaux statoriques à pôles saillants
• H02K 1/16 - Noyaux statoriques à encoches pour enroulements
• H02K 3/52 - Fixation des enroulements de pôles saillants ou de leurs connexions
• H02K 3/12 - Enroulements caractérisés par la configuration, la forme ou le genre de construction du conducteur, p.ex. avec des conducteurs en barre disposés dans des encoches
• H02K 3/48 - Fixation des enroulements sur la structure statorique ou rotorique dans les encoches
• H02K 5/24 - Enveloppes; Enceintes; Supports spécialement adaptés pour la réduction ou à la suppression des bruits ou vibrations

Abrégé

The present application provides a rotor assembly, a motor, and electrical equipment. The rotor assembly comprises: a magnetically conductive hub frame, the magnetically conductive hub frame comprising an end cover portion and an annular yoke portion, the end cover portion being connected to the axial end of the annular yoke portion, and the inner peripheral wall of the annular yoke portion being provided with a plurality of accommodating portions, the plurality of accommodating portions being distributed along the circumferential direction of the annular yoke portion; and a plurality of permanent magnets respectively disposed in the plurality of accommodating portions, and the polarities of the plurality of permanent magnets being the same. By means of the rotor assembly of the present application, the annular yoke portion and the end cover portion connected to the axial end of the annular yoke portion are provided, thereby improving the overall structural strength of the magnetically conductive hub frame; the inner peripheral wall of the annular yoke portion is provided with the plurality of accommodating portions, and the plurality of permanent magnets having the same polarity are disposed in the plurality of accommodating portions, so as to produce a consequent-pole magnetic structure on the annular yoke portion, thereby reducing the number of permanent magnets used, reducing the manufacturing difficulty of a consequent-pole rotor, enhancing the magnetic field modulation effect, and increasing the amplitude of a working magnetic order flux density harmonic.

Classes IPC  ?

• H02K 1/30 - Moyens de montage ou de fixation des parties magnétiques tournantes sur ou aux structures constituant le rotor utilisant des pièces intermédiaires, p.ex. des croisillons
• H02K 1/27915 - Aimants façonnés pour modifier l’entrefer entre les aimants et le stator
• H02K 1/14 - Noyaux statoriques à pôles saillants
• H02K 1/16 - Noyaux statoriques à encoches pour enroulements
• H02K 3/52 - Fixation des enroulements de pôles saillants ou de leurs connexions

Abrégé

The present application provides a stator assembly, a motor, and an electrical equipment. The motor comprises: a stator assembly comprising a stator core and a stator winding, wherein the stator core comprises: a stator yoke portion; stator main teeth provided on the stator yoke portion and comprising tooth shoes, the stator winding being disposed on the stator main teeth; and at least two stator auxiliary teeth provided on the tooth shoes; and a rotor assembly comprising a plurality of permanent magnet poles, the adjacent permanent magnet poles having different polarities. The number Ps of pole pairs of the stator winding satisfies that Ps=|ax±Pr|, wherein a represents the number of the stator main teeth, x represents the number of the stator auxiliary teeth on each stator main tooth, and Pr represents the number of the pole pairs of the plurality of permanent magnet poles. In the motor provided by the present application, the stator auxiliary teeth can serve as modulation components, and new harmonic components appearing in the air gap flux density can serve as working harmonics of the motor to provide an output torque for the motor, thereby effectively increasing the torque density of the motor.

Classes IPC  ?

• H02K 1/14 - Noyaux statoriques à pôles saillants
• H02K 1/16 - Noyaux statoriques à encoches pour enroulements
• H02K 3/04 - Enroulements caractérisés par la configuration, la forme ou le genre de construction du conducteur, p.ex. avec des conducteurs en barre
• H02K 3/12 - Enroulements caractérisés par la configuration, la forme ou le genre de construction du conducteur, p.ex. avec des conducteurs en barre disposés dans des encoches
• H02K 3/28 - Schémas d'enroulements ou de connexions entre enroulements
• H02K 3/34 - Enroulements caractérisés par la configuration, la forme ou la réalisation de l'isolement entre conducteurs ou entre conducteur et noyau, p.ex. isolement d'encoches
• H02K 1/27915 - Aimants façonnés pour modifier l’entrefer entre les aimants et le stator

Abrégé

Provided in the present application are a stator structure (200), an electric motor (100) and an electrical device. The electric motor (100) comprises: a first stator (110), the first stator (110) comprising a first stator yoke (112) and first stator teeth (114), and the first stator teeth (114) being arranged on the first stator yoke (112); a rotor (130) sleeved on an outer side of the first stator (110); a second stator (140) sleeved on an outer side of the rotor (130), the second stator (140) comprising a second stator yoke (142) and second stator teeth (144), and the second stator teeth (144) being arranged on the second stator yoke (142); and a winding (166) arranged on the first stator yoke (112) and/or the second stator yoke (142). According to the electric motor (100) provided in the present application, the winding (166) is wound around the first stator yoke (112) or the second stator yoke (142) in a yoke winding manner, or windings (166) are wound around both the first stator yoke (112) and the second stator yoke (142), so that the end of the winding (166) is shortened, thereby effectively balancing the contradiction between an over-long end of the winding (166) and a high winding factor of the electric motor (100); and the winding of the winding (166) around the first stator yoke (112) and/or the second stator yoke (142) is obviously simpler, thereby reducing the production difficulty of the electric motor (100), and improving the production efficiency.

Classes IPC  ?

• H02K 1/14 - Noyaux statoriques à pôles saillants
• H02K 1/16 - Noyaux statoriques à encoches pour enroulements
• H02K 16/04 - Machines avec un rotor et deux stators
• H02K 3/28 - Schémas d'enroulements ou de connexions entre enroulements
• H02K 3/52 - Fixation des enroulements de pôles saillants ou de leurs connexions
• H02K 1/276 - Aimants encastrés dans le noyau magnétique, p.ex. aimants permanents internes [IPM]
• H02K 1/279 - Aimants encastrés dans le noyau magnétique
• H02K 3/12 - Enroulements caractérisés par la configuration, la forme ou le genre de construction du conducteur, p.ex. avec des conducteurs en barre disposés dans des encoches
• H02K 1/28 - Moyens de montage ou de fixation des parties magnétiques tournantes sur ou aux structures constituant le rotor

Abrégé

A stator structure (100), a motor, and electrical equipment. The stator structure comprises: a stator core (110) comprising a stator yoke (112) and a plurality of stator teeth (114), the plurality of stator teeth being arranged on the stator yoke, a stator slot (120) being formed between adjacent stator teeth, each stator tooth comprising a tooth body (116) and a tooth boot (118), the tooth body being arranged on the stator yoke, and the tooth boot being arranged on the tooth body; and a winding (130) arranged on the stator teeth, the winding comprising flat wires (132) wound on the stator teeth in a concentrated manner, the flat wires being wound on the stator teeth in multiple layers, and the number of flat wires in the layer of the winding away from the stator teeth being not more than the number of flat wires in the layer of the winding close to the stator teeth, wherein the width of the side of the tooth body close to the tooth boot is 2×t1, the width of the side of the tooth body close to the stator yoke is 2×t2, and 1.5×t1≥t2≥t1. The use of a concentrated winding mode facilitates automatic winding of the flat wires, and the setting of the size of the stator teeth improves the slot fill factor of the flat wires, and therefore, both the economic cost and the motor performance are considered.

Classes IPC  ?

• H02K 1/14 - Noyaux statoriques à pôles saillants
• H02K 1/16 - Noyaux statoriques à encoches pour enroulements
• H02K 3/12 - Enroulements caractérisés par la configuration, la forme ou le genre de construction du conducteur, p.ex. avec des conducteurs en barre disposés dans des encoches
• H02K 3/28 - Schémas d'enroulements ou de connexions entre enroulements
• H02K 3/52 - Fixation des enroulements de pôles saillants ou de leurs connexions
• H02K 3/34 - Enroulements caractérisés par la configuration, la forme ou la réalisation de l'isolement entre conducteurs ou entre conducteur et noyau, p.ex. isolement d'encoches

Abrégé

A field weakening control method and apparatus for a motor, a motor controller, a motor control system, and a medium. The method comprises: acquiring a direct current bus voltage, and determining the phase of an alternating current input voltage; determining a maximum value and a minimum value of the direct current bus voltage according to the direct current bus voltage, and determining an average value of the direct current bus voltage according to the maximum value and the minimum value; determining a field weakening average current according to a reference voltage amplitude for controlling the motor and the average value, and determining a field weakening compensation current according to the field weakening average current, a limiting value of a reference current for controlling the motor, the maximum value, the minimum value, and the phase of the alternating current input voltage; and performing field weakening control on the motor according to the field weakening average current and the field weakening compensation current.

Classes IPC  ?

• H02P 21/14 - Estimation ou adaptation des paramètres des machines, p.ex. flux, courant ou tension
• H02P 21/22 - Commande du courant, p.ex. en utilisant une boucle de commande
• H02P 25/022 - Moteurs synchrones

Abrégé

The present application provides a stator core, a stator, a motor, a compressor, and an air conditioner. The stator core comprises: a plurality of block stators which can be combined to form the stator core. Any block stator comprises: a yoke part; a tooth part, connected to the yoke part; a first tooth shoe, connected to the tooth part; a second tooth shoe, connected to the side of the tooth part away from the first tooth shoe, the first tooth shoe and the second tooth shoe being arranged on the side of the tooth part away from the yoke part, the second tooth shoe comprising a first surface facing a rotor, and in a rotating direction of the rotor, the first tooth shoe passing by the rotor earlier than the second tooth shoe; and a notch, formed on the side of the second tooth shoe away from the first surface. The notch is formed on the side of the second tooth shoe away from the first surface, so that an air gap magnetic field saturation phenomenon at the second tooth shoe is reduced to a certain extent, the torque fluctuation of the motor is reduced to a great extent, multi-vibration noise generated in the operation process of the motor is reduced, and the performance of the motor is further improved.

Classes IPC  ?

• H02K 1/14 - Noyaux statoriques à pôles saillants

Abrégé

The present application provides a motor control method and apparatus, a control system, and a readable storage medium. The motor is used for driving a movable structure to move towards a target position. The method comprises: during movement of the movable structure, obtaining the distance between the position of the movable structure and the target position; adjusting control parameters of a control system of the motor when the distance is less than or equal to a preset threshold; and controlling operation of the motor according to the adjusted control parameters, to reduce the movement speed of the movable structure. According to the embodiments of the present application, the movable structure can be ensured to stop smoothly at the target position, the impact of changes in system damping on the control performance due to long-term use is reduced, and the movable structure can be prevented from oscillating back and forth at the target position.

Classes IPC  ?

• H02P 23/04 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par un procédé de commande autre que la commande par vecteur spécialement adaptés pour amortir les oscillations des moteurs, p.ex. pour la réduction du pompage
• H02P 23/20 - Commande de l’accélération ou de la décélération

Abrégé

The present application provides a motor control method, a control device, a control system and a readable storage medium. The motor is connected to a movable structure by means of a transmission device to drive the movable structure to move. The control method comprises: obtaining a shaft torque of a motor and an electromagnetic torque of the motor; determining a disturbance torque of the motor on the basis of the shaft torque and the electromagnetic torque, wherein the disturbance torque is generated by the oscillation caused by the transmission device; compensating for an instruction current of the motor according to the disturbance torque; and controlling the motor according to the compensated instruction current. By means of the technical solution of the present application, the problem of oscillation of the movable structure control caused by the backlash of the transmission device is reduced, the influence on the movement time of the movable structure is reduced, and the impact on the transmission device is reduced, so as to avoid shortening the service life of the transmission device.

Classes IPC  ?

• H02P 6/10 - Dispositions pour commander l'ondulation du couple, p.ex. en assurant une ondulation réduite du couple
• H02P 6/28 - Dispositions pour la commande du courant
• H02P 6/17 - Dispositions de circuits pour détecter la position et pour l’obtention d’informations sur la vitesse
• H02K 7/116 - Association structurelle avec des embrayages, des freins, des engrenages, des poulies ou des démarreurs mécaniques avec des engrenages

Abrégé

Provided in the embodiments of the present application are a rotor structure, an electric motor structure, and an electronic device. The rotor structure comprises: a rotor core comprising a first core segment and a second core segment; and a rotor shaft, which is arranged on the rotor core in a penetrating manner, and around which the rotor core can rotate, wherein each rotor punching sheet is provided with a plurality of permanent magnet slots which penetrate two end surfaces of the rotor core in an axial direction of the rotor core; a tooth protrusion portion is provided between two adjacent permanent magnet slots in a circumferential direction of the rotor punching sheet; and on the projections of the end surfaces of the rotor core, all the rotor punching sheets in the first core segment have the same outer contour, all the rotor punching sheets in the second core segment have the same outer contour, and the projection contour lines of the tooth protrusion portions in the first core segment do not coincide with projection contour lines of the tooth protrusion portions in the second core segment. In the technical solution of the present application, although the rotor core is arranged in segments, the permanent magnets do not need to be arranged in segments, which can reduce the manufacturing cost of a skewed pole rotor, and can also improve the production efficiency.

Classes IPC  ?

• H02K 1/27 - Noyaux rotoriques à aimants permanents
• H02K 1/24 - Noyaux rotoriques à pôles saillants
• H02K 1/28 - Moyens de montage ou de fixation des parties magnétiques tournantes sur ou aux structures constituant le rotor
• H02K 1/14 - Noyaux statoriques à pôles saillants
• H02K 1/16 - Noyaux statoriques à encoches pour enroulements
• H02K 3/28 - Schémas d'enroulements ou de connexions entre enroulements
• H02K 3/12 - Enroulements caractérisés par la configuration, la forme ou le genre de construction du conducteur, p.ex. avec des conducteurs en barre disposés dans des encoches
• H02K 3/48 - Fixation des enroulements sur la structure statorique ou rotorique dans les encoches

Abrégé

Provided in the embodiments of the present application are a stator core, an electric motor structure, and a laundry treatment device. The stator core comprises a plurality of stator punching sheets, which are arranged in a stacked manner. Each stator punching sheet comprises a stator yoke and a plurality of stator teeth arranged on the stator yoke, wherein the plurality of stator teeth are circumferentially distributed around an axis of the stator core, and a winding slot is formed between two adjacent stator teeth; and the widths of slot openings of the winding slots of at least two stator punching sheets are different. In the technical solution of the present application, among a plurality of stator punching sheets which constitute a stator core, there are both stator punching sheets with large slot openings and stator punching sheets with small slot openings, such that under the action of the stator punching sheets with at least two types of widths of slot openings, the noise generated during a use process of an electric motor may be reduced, and a slot space factor may also be improved.

Classes IPC  ?

• H02K 1/14 - Noyaux statoriques à pôles saillants
• H02K 1/16 - Noyaux statoriques à encoches pour enroulements
• H02K 3/28 - Schémas d'enroulements ou de connexions entre enroulements
• H02K 3/12 - Enroulements caractérisés par la configuration, la forme ou le genre de construction du conducteur, p.ex. avec des conducteurs en barre disposés dans des encoches

Abrégé

Embodiments of the present application provide a stator lamination, a stator structure, a motor structure, and a laundry treatment apparatus. The stator lamination comprises: a stator yoke and a plurality of stator teeth arranged on the stator yoke, the plurality of stator teeth being circumferentially distributed around the axis of the stator lamination, and a winding groove being formed between two adjacent stator teeth; and tooth shoes arranged on the ends of the stator teeth distant from the stator yoke, wherein a first notch and a second notch arranged in the radial direction of the stator teeth are formed between two adjacent tooth shoes, and the notch width of the first notch is different from that of the second notch. In the technical solution of the present application, a plurality of notches having different notch widths are directly formed in one stator lamination, so that the two aspects of noise and slot fullness rate can be both taken into account, and the product competitiveness of the motor can be effectively improved.

Classes IPC  ?

• H02K 1/14 - Noyaux statoriques à pôles saillants
• H02K 1/16 - Noyaux statoriques à encoches pour enroulements
• H02K 3/28 - Schémas d'enroulements ou de connexions entre enroulements
• H02K 3/12 - Enroulements caractérisés par la configuration, la forme ou le genre de construction du conducteur, p.ex. avec des conducteurs en barre disposés dans des encoches
• H02K 3/48 - Fixation des enroulements sur la structure statorique ou rotorique dans les encoches
• H02K 1/27 - Noyaux rotoriques à aimants permanents

Abrégé

An encoder, comprising a stator assembly (1) and a rotor assembly (2), wherein the stator assembly (1) comprises a mounting plate (11) and a circuit board (12) mounted on one side surface of the mounting plate (11), the circuit board (12) being provided with a plurality of magnetic sensors (13) distributed in a circumferential direction; the rotor assembly (2) comprises a rotor disk (21) coaxially arranged with the mounting plate (11), the rotor disk (21) being located on one side of the mounting plate (11) in an axial direction, the rotor disk (21) being rotatable relative to the mounting plate (11), and the rotor disk (21) being provided with a plurality of magnetic pole portions (21a) distributed in the circumferential direction corresponding to a side surface of the circuit board (12); and the plurality of magnetic sensors (13) are used to sense changes in a magnetic field in order to generate sensing signals. Further disclosed is a servo system having the encoder.

Classes IPC  ?

• G01D 5/244 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensible; Moyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminé; Transducteurs non spécialement adaptés à une variable particulière utilisant des moyens électriques ou magnétiques produisant des impulsions ou des trains d'impulsions

Abrégé

An encoder, a position compensation method and apparatus for the axial runout thereof, and a storage medium. The encoder (100) comprises a stator disk (2) and a rotor disk (1) that rotates relative to the stator disk (2). The rotor disk (1) and the stator disk (2) define a plurality of decoding regions. The rotor disk (1) generates a magnetic field during the rotational stroke thereof such that the stator disk (2) detects each of the decoding regions in sequence, the plurality of decoding regions comprising a first decoding region. The position compensation method for the axial runout of the encoder (100) comprises the steps of: obtaining two pieces of first actual position information of the rotor disk (1) on the first decoding area; and calculating target position information of the rotor disk (1) according to the two pieces of first actual position information.

Classes IPC  ?

• G01D 5/244 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensible; Moyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminé; Transducteurs non spécialement adaptés à une variable particulière utilisant des moyens électriques ou magnétiques produisant des impulsions ou des trains d'impulsions
• G01D 18/00 - Test ou étalonnage des appareils ou des dispositions prévus dans les groupes

Abrégé

A magnetic encoder (100), the magnetic encoder (100) comprising a rotor disk (1). In the magnetic encoder (100), multiple target zero point positions (12a) having a magnetic density of zero are provided along the circumferential direction of the rotor disk (1). Multiple magnetic pole portions (11) distributed along the circumferential direction are provided on the rotor disk (1), at least a portion of the magnetic pole portions (11) being different in size. For two adjacent magnetic pole portions (11), a magnetic pole neutral surface (13a) between the two magnetic pole portions (11) and/or opposite end faces of the two magnetic pole portions (11) deviate from a corresponding target zero point position (12a), such that an actual zero position of the magnetic field formed by the magnetic pole portions (11) corresponds to a target zero point position (12a).

Classes IPC  ?

• G01D 5/244 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensible; Moyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminé; Transducteurs non spécialement adaptés à une variable particulière utilisant des moyens électriques ou magnétiques produisant des impulsions ou des trains d'impulsions

Abrégé

The present application discloses an encoder and a position compensation method and apparatus therefor, and a storage medium. The position compensation method for the encoder comprises: obtaining first decoding information of the encoder in a first decoding area; calculating theoretical detection information of a stator disc in a second decoding area according to the first decoding information; obtaining second position information of a rotor disc in the second decoding area and second detection information of the stator disc in the second decoding area; calculating error information according to the theoretical detection information and the second detection information; and compensating the second position information according to the error information to obtain target position information.

Classes IPC  ?

• G01D 5/12 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensible; Moyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminé; Transducteurs non spécialement adaptés à une variable particulière utilisant des moyens électriques ou magnétiques

Abrégé

Provided in the embodiments of the present application are a rotor structure, an electric motor structure, and a clothing treating device. The rotor structure comprises: a rotor iron core, a plurality of permanent magnet slots being provided in the rotor iron core, and the rotor iron core comprising a plurality of rotor punching sheets arranged in a stacked manner; a permanent magnet, disposed in the permanent magnet slot; and a magnetic barrier, the rotor structure being capable of rotating in one direction or rotating in two directions in a circumferential direction, and in the rotation direction of the rotor structure, the magnetic barrier being provided on at least one side of the permanent magnet slot, and two ends of the magnetic barrier facing an outer edge of the permanent magnet and an outer edge of the rotor iron core respectively, wherein the plurality of rotor punching sheets comprises at least one first punching sheet and at least one second punching sheet, and the magnetic barrier is provided on the first punching sheet or the second punching sheet. In the technical solution of the present application, the magnetic barrier is selectively provided on the first punching sheet or the second punching sheet, and under the action of the punching sheet without the magnetic barrier, some non-magnetically conductive materials that may hinder the normal processing of the rotor iron core are isolated, thereby reducing the possibility of the non-magnetically conductive materials entering the magnetic barrier.

Classes IPC  ?

• H02K 1/27 - Noyaux rotoriques à aimants permanents

Abrégé

Provided in the present application are an electric motor, a fan comprising the electric motor, and a household appliance. The electric motor comprises a housing, a rotating shaft assembly, a rotor assembly and a stator assembly, wherein the housing is provided with a front end and a rear end, which are opposite each other; the rotating shaft assembly comprises a first rotating shaft, a second rotating shaft and a first bearing, the first rotating shaft being hollow, the first rotating shaft being sleeved on the outer side of the second rotating shaft, and the first bearing being arranged between the inner circumference of the first rotating shaft and the outer circumference of the second rotating shaft; the rotor assembly is arranged inside the housing, and the rotor assembly comprises a first rotor and a second rotor, the first rotor and the second rotor being respectively correspondingly sleeved on the first rotating shaft and the second rotating shaft; and the stator assembly is fixed inside the housing, and the stator assembly comprises a first stator and a second stator, the first stator and the second stator being respectively correspondingly sleeved on the outer sides of the first rotor and the second rotor.

Classes IPC  ?

• H02K 16/00 - Machines avec plus d'un rotor ou d'un stator
• H02K 1/22 - Parties tournantes du circuit magnétique
• H02K 5/16 - Moyens de support des paliers, p.ex. supports isolants ou moyens pour ajuster les paliers dans leurs flasques
• H02K 5/04 - Enveloppes ou enceintes caractérisées par leur configuration, leur forme ou leur construction
• F04D 25/08 - Ensembles comprenant des pompes et leurs moyens d'entraînement le fluide énergétique étant l'air, p.ex. pour la ventilation

Abrégé

12312322) and is arranged between the first rotating shaft (10a) and the second rotating shaft (10b). The shaft system structure provides stable support, is easy to install, has a small axial size and has a low manufacturing cost.

Classes IPC  ?

• F16C 3/02 - Arbres; Manivelles
• F16C 35/08 - Supports rigides de paliers; Corps de paliers, p.ex. calottes, couvercles pour broches
• H02K 1/22 - Parties tournantes du circuit magnétique
• H02K 5/16 - Moyens de support des paliers, p.ex. supports isolants ou moyens pour ajuster les paliers dans leurs flasques

Abrégé

Embodiments of the present application provide a rotor structure, a motor structure, and a laundry treatment device. The rotor structure comprises: a rotor iron core, a plurality of permanent magnet slots being provided on the rotor iron core, and the plurality of permanent magnet slots being provided in the circumferential direction of the rotor iron core; permanent magnets disposed in the permanent magnet slots; and magnetic barriers disposed on the rotor iron core, the rotor structure being capable of unidirectional rotation or bidirectional rotation in the circumferential direction, at least one side of each permanent magnet slot being provided with a magnetic barrier in the rotation direction of the rotor structure, and two ends of each magnetic barrier respectively facing the permanent magnet and the outer edge of the rotor iron core. In the technical solution of the present application, on the one hand, while suppressing the quadrature axis armature reaction of the motor, relieving the degree of magnetic saturation and reducing the load counter-electromotive force, and improving the torque density and overload capacity of the motor, the positions of the magnetic barriers can be configured according to the limit of the rotation direction of the rotor structure; on the other hand, the rotor iron core is hollowed to provide magnetic barriers, and thus, the amount of rare earth permanent magnets can also be reduced.

Classes IPC  ?

• H02K 1/27 - Noyaux rotoriques à aimants permanents
• H02K 29/03 - Moteurs ou génératrices à dispositifs de commutation non mécaniques, p.ex. tubes à décharge ou dispositifs à semi-conducteurs avec un circuit magnétique spécialement adapté pour éviter des ondulations du couple ou des problèmes de démarrage autonome

Abrégé

A motor, a compressor, and a fan. The motor (8) comprises a rotor core (4), rotor slots, and a stator core (1). The rotor slots are arranged through the rotor core (4), and the rotor slots are inclined with respect to the axial direction. The stator core (1) is disposed on one side of the rotor core (4). The stator core (1) comprises stator teeth (10) facing the rotor core (4), air gaps (13) are provided between the stator teeth (10) and the rotor core (4), and at least some of the air gap (13) are not equal. Inclined rotor slots are provided on the rotor core, and air gaps that are not completely equal or completely unequal are formed between the stator teeth and the rotor core, so as to satisfy the requirements of reducing the low-speed harmonic torque fluctuation and improving the output performance of the motor, so that the starting additional torque and rated performance of the motor can be matched with each other.

Classes IPC  ?

• H02K 1/26 - Noyaux rotoriques à encoches pour enroulements
• H02K 1/14 - Noyaux statoriques à pôles saillants

Abrégé

A control apparatus and a laundry treating apparatus. The control apparatus is used for controlling a motor (900). The control apparatus comprises at least two buses (100), a first control component (202), and at least two capacitors (300). The at least two buses (100) are used for being connected to the motor (900). One end of the first control component (202) is connected to one bus (100) of the at least two buses (100). One end of one capacitor (300) of the at least two capacitors (300) is connected to the other end of the first control component (202); the other end of the capacitor (300) is connected to the other bus (100) of the at least two buses (100); and both ends of the other capacitor (300) of the at least two capacitors (300) are connected to the at least two buses (100), respectively. When the motor (900) is driven by the control apparatus, the first control component (202) can control whether the capacitor (300), connected in series to the first control component (202), of the at least two capacitors (300) is connected to the control apparatus, thereby reducing system low-frequency noise caused by torque ripple of the control apparatus.

Classes IPC  ?

• H02M 5/458 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant alternatif, p.ex. pour changement de la tension, pour changement de la fréquence, pour changement du nombre de phases avec transformation intermédiaire en courant continu par convertisseurs statiques utilisant des tubes à décharge ou des dispositifs à semi-conducteurs pour transformer le courant continu intermédiaire en courant alternatif utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs
• H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
• D06F 34/08 - Circuits de commande ou leurs dispositions
• H02P 27/06 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par le type de tension d'alimentation utilisant une tension d’alimentation à fréquence variable, p.ex. tension d’alimentation d’onduleurs ou de convertisseurs utilisant des convertisseurs de courant continu en courant alternatif ou des onduleurs

Abrégé

Provided are a permanent magnet, a rotor assembly and an electric motor. The permanent magnet is used in the electric motor, and comprises: a first end face; a second end face arranged opposite and spaced apart from the first end face; a first side face; a second side face, wherein both the first side face and the second side face are positioned between the first end face and the second end face, are arranged opposite each other, and are both suitable for extending in a direction from a central portion to an edge of a rotor core of the electric motor; and a transition surface positioned between the first side face and the second end face and/or between the second side face and the second end face, wherein the distance from the transition surface to the first end face is smaller than the distance from the first end face to the second end face. The present application is favorable for reducing a back electromagnetic force harmonic wave, a cogging torque and a torque ripple.

Classes IPC  ?

• H02K 1/27 - Noyaux rotoriques à aimants permanents
• H01F 7/02 - Aimants permanents

Abrégé

Provided are an electric motor rotor and an electric motor, the electric motor rotor comprising a rotor core and a plurality of permanent magnets, wherein the plurality of permanent magnets are arranged in the circumferential direction of the rotor core so as to form a plurality of magnetic poles in the circumferential direction of the rotor core, the magnetization directions of two adjacent magnetic poles are opposite to each other, an angle between the magnetic domain orientation of the permanent magnet in each magnetic pole and the center line of the magnetic pole is α, and α is not less than 0 degrees and is not more than 40 degrees, so as to form a magnetic characteristic where the magnetic flux density is large at the center of the magnetic pole and gradually decreases towards two ends in the circumferential direction.

Classes IPC  ?

• H02K 1/27 - Noyaux rotoriques à aimants permanents

Abrégé

The present application provides an external rotor permanent magnet motor and a washing machine. The external rotor permanent magnet motor comprises: a stator; and an external rotor, which is sleeved on the outside of the stator and is provided concentrically with the stator. The external rotor comprises: a rotor iron core, which is an annular structure; and multiple permanent magnets. The number of rotor poles provided by the multiple permanent magnets arranged in the circumferential direction of the rotor iron core is 40, the magnetization directions of adjacent two magnetic poles are opposite, the number of stator slots provided on the stator is 30; moreover, in each of the magnetic poles, the angle between the magnetic-domain orientation of the permanent magnet and the centerline of the magnetic pole thereof is α, which is no less than zero degrees and no greater than 40 degrees, thus providing the magnetic characteristic of the magnetic flux density being high at the center of the magnetic poles and gradually decreasing toward both ends in the circumferential direction following the orientation.

Classes IPC  ?

• H02K 1/27 - Noyaux rotoriques à aimants permanents

Abrégé

The present application provides a power assembly and a fan. The power assembly comprises a first packaging cover, a stator assembly, a first rotor assembly, and at least two supporting components; the first packaging cover is buckled on one side of the stator assembly; a first channel is formed in the stator assembly; the first rotor assembly comprises a first rotating shaft and a first rotor; the first rotor is connected to the first rotating shaft; the first rotor can drive the first rotating shaft to rotate; the first rotor is provided at one side of the stator assembly; an axial air gap is formed between the first rotor and the stator assembly, and a second channel is formed in the first rotating shaft; first supporting components are connected to the first rotating shaft, are provided in the first channel, and are connected to the stator assembly; and second supporting components are connected to the first rotating shaft and connected to the first packaging cover. According to the power assembly provided by the present application, particularly for the power assembly needing to rotate at a high speed, at least two supporting assemblies can better share a force borne by the first rotating shaft, and thus, the axial strength of the first rotating shaft is improved.

Classes IPC  ?

• H02K 16/00 - Machines avec plus d'un rotor ou d'un stator
• H02K 5/167 - Moyens de support des paliers, p.ex. supports isolants ou moyens pour ajuster les paliers dans leurs flasques utilisant des paliers à contact lisse ou des chapeaux de palier sphériques
• H02K 5/173 - Moyens de support des paliers, p.ex. supports isolants ou moyens pour ajuster les paliers dans leurs flasques utilisant des roulements à rouleaux, p.ex. des roulements à billes
• F04D 25/08 - Ensembles comprenant des pompes et leurs moyens d'entraînement le fluide énergétique étant l'air, p.ex. pour la ventilation
• F04D 29/38 - Ailettes

Abrégé

A power assembly (910) and a fan. The power assembly (910) comprises a housing (100), a stator assembly (200), a rotor assembly (300), and a rotating shaft (400); the stator assembly (200) is disposed in the housing (100); the rotor assembly (300) is located on one side of the stator assembly (200) in an axial direction to form an axial air gap between the rotor assembly (300) and the stator assembly (200); the rotating shaft (400) has a first end connected to the rotor assembly (300), and a second end passing through the stator assembly (200) and extending to the outside of the housing (100). The rotor assembly (300) is disposed on one side of the stator assembly (200) in the axial direction of the rotating shaft (400), so that the magnetic flux direction of the power assembly (910) is the axial direction, and thus, in the case of identical output power and identical efficiency, the axial length is smaller.

Classes IPC  ?

• H02K 1/27 - Noyaux rotoriques à aimants permanents
• H02K 1/16 - Noyaux statoriques à encoches pour enroulements

Abrégé

An electrical fan and an electric appliance are provided. The fans has a driving structure, an impeller, a wind hood and a diffuser. The impeller has a cover plate installed on the driving structure. The wind hood is covered on the impeller and has an air inlet and an air outlet communicated to each other. The diffuser is located at one end of the impeller facing the air outlet. The diffuser has a first protrusion connected to the driving structure. The first protrusion protrudes in a direction of the wind hood. The diameter of an end of the first protrusion adjacent the cover plate is smaller than the diameter of an end away from the cover plate. The diffuser has an inner ring arm connected to the first protrusion and an outer ring arm sleeved outside the inner ring arm.

Classes IPC  ?

• H02K 9/06 - Dispositions de refroidissement ou de ventilation par l'air ambiant s'écoulant à travers la machine comportant des moyens pour établir la circulation d'un agent de refroidissement avec des ventilateurs ou des dispositifs d'entraînement mûs par l'arbre de la machine
• H02K 1/18 - Moyens de montage ou de fixation des parties magnétiques fixes sur ou aux structures constituant le stator
• H02K 1/20 - Parties fixes du circuit magnétique avec des canaux ou des conduits pour l'écoulement d'un agent de refroidissement
• H02K 5/20 - Enveloppes ou enceintes caractérisées par leur configuration, leur forme ou leur construction avec des canaux ou des conduits pour la circulation d'un agent de refroidissement
• H02K 7/08 - Association structurelle avec des paliers
• H02K 11/33 - Circuits d’entraînement, p.ex. circuits électroniques de puissance

Abrégé

A stator assembly and a motor are provided. The stator assembly has a stator core and a winding. The stator core has a stator yoke portion, at least one stator tooth, and at least one winding. The stator tooth is disposed along the axial direction of the stator yoke portion. The stator tooth is detachably connected to the stator yoke portion. The winding is wound on the stator tooth. The stator yoke portion is provided with a stator yoke groove and/or a stator projection adapted to the shape of the stator tooth. The stator tooth passes through the stator yoke groove and/or the stator projection to form the stator core

Classes IPC  ?

• H02K 1/14 - Noyaux statoriques à pôles saillants
• H02K 16/02 - Machines avec un stator et deux rotors

Abrégé

An outdoor unit for an air conditioner, and an air conditioner are provided. The outdoor unit has a housing and a draught fan. The housing is provided with a first air exchange port and a second air exchange port. The draught fan is arranged in the housing and located between the first air exchange port and the second air exchange port. The draught fan has an electric motor, a first fan, and a second fan. The electric motor has two rotors which rotate independently of each other, and a first output shaft and a second output shaft connected to the two rotors respectively. The first output shaft and the second output shaft are respectively fixedly connected to the first fan and the second fan for driving the first fan and the second fan to rotate independently of each other.

Classes IPC  ?

• F24F 1/38 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale Éléments extérieurs séparés, p.ex. élément extérieur à relier à un élément intérieur séparé comprenant un compresseur et un échangeur de chaleur - Parties constitutives des ventilateurs des éléments extérieurs, p.ex. orifices d'admission évasés ou supports des ventilateurs
• H02K 5/128 - Enveloppes ou enceintes caractérisées par leur configuration, leur forme ou leur construction spécialement adaptées à un fonctionnement dans un liquide ou dans un gaz utilisant des manchons d'entrefer ou des disques à film d'air
• H02K 9/06 - Dispositions de refroidissement ou de ventilation par l'air ambiant s'écoulant à travers la machine comportant des moyens pour établir la circulation d'un agent de refroidissement avec des ventilateurs ou des dispositifs d'entraînement mûs par l'arbre de la machine
• H02K 16/00 - Machines avec plus d'un rotor ou d'un stator

Abrégé

A motor and a fan are provided. The motor has a stator assembly, two mutually independent rotor assemblies, and two mutually independent rotating shaft assemblies. The stator assembly has a stator core and two groups of mutually independent windings. The rotor assemblies are oppositely and coaxially arranged on two axial sides of the stator assembly and form an axial air gap with the stator assembly. The two rotor assemblies are configured to rotate independently. The two mutually independent rotating shaft assemblies are coaxially connected with the two rotor assemblies, respectively, and protrude in a direction of the same side away from the stator core along the axial direction of the motor.

Classes IPC  ?

• H02K 16/02 - Machines avec un stator et deux rotors
• H02K 1/16 - Noyaux statoriques à encoches pour enroulements
• H02K 1/18 - Moyens de montage ou de fixation des parties magnétiques fixes sur ou aux structures constituant le stator
• H02K 1/27 - Noyaux rotoriques à aimants permanents
• H02K 7/08 - Association structurelle avec des paliers

Abrégé

A fan is provided. The fan has a motor and a first rotating shaft. The motor has a stator assembly, a rotor and a winding. The stator assembly has a stator yoke portion and a stator tooth detachably connected to each other. The winding is wound on the stator tooth. The stator yoke portion has a stator yoke slot and/or a stator projection, adapted to the shape of the stator tooth. The stator tooth axially pass through the stator yoke slot and/or the stator projection to form a stator core. A first fan blade is arranged at an end of the first rotating shaft to rotate the first fan blade when the first rotating shaft rotates.

Classes IPC  ?

• H02K 1/14 - Noyaux statoriques à pôles saillants
• H02K 1/18 - Moyens de montage ou de fixation des parties magnétiques fixes sur ou aux structures constituant le stator
• H02K 7/14 - Association structurelle à des charges mécaniques, p.ex. à des machines-outils portatives ou des ventilateurs
• H02K 1/16 - Noyaux statoriques à encoches pour enroulements

Abrégé

A drive apparatus, a control method, an electrical device and a storage medium. The drive apparatus comprises a first electric motor (110), which is connected to a power source (200); and a first drive control circuit (120), wherein the first drive control circuit (120) is used for acquiring a busbar voltage signal and an alternating-current voltage signal of the first electric motor (110), and the first drive control circuit (120) can control an operation mode of the first electric motor (110), and/or control an input power source power factor of the drive apparatus. In the method, by means of the first electric motor (110) and the first drive control circuit (120) connected thereto, the input power source power factor is controlled, and a busbar voltage is controlled; and a traditional electric reactor or power factor correction circuit is replaced, such that the aims of circuit simplification and cost reduction are achieved.

Classes IPC  ?

• H02P 5/74 - Dispositions spécialement adaptées à la régulation ou la commande de la vitesse ou du couple d’au moins deux moteurs électriques pour commander au moins deux moteurs dynamo-électriques à courant alternatif

Abrégé

A control method for a clothes treatment device, a clothes treatment device, and a storage medium. The control method for a clothes treatment device comprises: detecting initial inertia of a clothes treatment device in a preset load state, and calculating the difference between the initial inertia and preset inertia; and detecting load inertia of the clothes treatment device, and calibrating the load inertia by means of the difference. On the one hand, accurate load inertia can be obtained, thereby preventing the difference in manufacturing of the clothes treatment device from affecting the load inertia detection accuracy; on the other hand, suitable washing parameters can be obtained on the basis of the accurate load inertia, thereby improving the clothes washing effect and avoiding the problem of waste of water and electricity.

Classes IPC  ?

• D06F 39/00 - BLANCHISSAGE, SÉCHAGE, REPASSAGE, PRESSAGE OU PLIAGE D'ARTICLES TEXTILES - Détails des machines à laver dans la mesure où ils ne sont pas particuliers à un seul type de machines couvert par les groupes
• D06F 33/00 - Commande d’opérations dans les machines à laver ou les machines lavantes-séchantes

Abrégé

A control method and control apparatus for a laundry treatment device, and a laundry treatment device. The control method for the laundry treatment device comprises: receiving an eccentricity detection signal (102); determining whether the memory of the laundry treatment device stores the load weight value of the laundry treatment device (104); determining that the memory stores the load weight value, and sensing the amount of eccentricity of the laundry treatment device according to the load weight value (106); and determining that the memory does not store the load weight value, measuring the load weight value of the laundry treatment device, storing the measured load weight value to the memory, and according to the measured load weight value, sensing the amount of eccentricity of the laundry treatment device (108). According to the technical solution, it is avoided to perform load weight identification when sensing the eccentricity each time, the time of sensing the eccentricity can be reduced, and the dewatering time of the laundry treatment device is reduced.

Classes IPC  ?

• D06F 33/48 - Prévention ou réduction du balourd ou du bruit
• D06F 33/40 - Commande des phases de fonctionnement, p.ex. optimisation ou amélioration des phases de fonctionnement en fonction de l’état du linge de l'essorage centrifuge

Abrégé

A motor controller (1) of an electrical appliance (200), a motor apparatus (100) of the electrical appliance, and the electrical appliance. The motor controller comprises: a first control circuit (102), the first control circuit being electrically connected to a first drive motor (2) and a second drive motor (3) and used for controlling the first drive motor and the second drive motor to operate; and a second control circuit (104), the second control circuit being electrically connected to windings of the second drive motor and used for controlling the windings (32a, 32b, 32c) of the second drive motor to serve as a reactor. When a reactor is required, the windings of the second drive motor are used as the reactor, thereby simplifying the structure of the electrical appliance, saving the utilization space inside the whole machine, improving the integration level of the electrical appliance, reducing mounting steps, improving the production efficiency, and reducing system material costs of the electrical appliance.

Classes IPC  ?

• H02P 29/00 - Dispositions pour la régulation ou la commande des moteurs électriques, adaptées à des moteurs à courant alternatif et à courant continu

Abrégé

The present application provides a motor rotor position detection method, a device, and a motor controller. The method comprises: after a first interference signal having a frequency f is injected into a motor drive loop, acquiring, from a drive current, a positive-sequence current component having a frequency of f and a negative-sequence current component having a frequency of f1, wherein f1 is less than f; acquiring a current drive current feedback value; determining a current reference coefficient value according to the current drive current feedback value; determining a current offset angle according to the current reference coefficient value, an amplitude of the positive-sequence current component having a frequency of f, and an amplitude of the negative-sequence current component having a frequency of f1; and determining a current position of a motor rotor according to the current offset angle. The method determines an offset angle of a rotor of a motor rotor according to an injected interference signal and a drive current feedback value of the motor, and in turn determines a position of the rotor of the motor by means of the offset angle, thereby improving accuracy of rotor position detection.

Classes IPC  ?

• H02P 6/18 - Dispositions de circuits pour détecter la position sans éléments séparés pour détecter la position
• H02P 25/026 - Moteurs synchrones commandés par la fréquence d’alimentation ce qui permet de détecter la position du rotor

Abrégé

A method and device for detecting the number of motor pole pairs, and a motor controller. The method comprises: acquiring the reference load-carrying capacity of a reference motor (S101); controlling a target motor to operate at a preset motor speed, and acquiring the current actual load-carrying capacity of the target motor (S102); and according to the actual load-carrying capacity, the reference load-carrying capacity, and parameters of the reference motor, calculating the number of pole pairs of the target motor (S103). In the method, the number of pole pairs of the target motor is calculated by means of using the parameters of the reference motor and the preset motor speed without increasing hardware costs, so that the target motor model is identified according to the number of pole pairs, and the cost of identification and the occupation of resources is reduced on the basis of ensuring the reliability and accuracy of the identification results.

Classes IPC  ?

• G01R 31/34 - Tests de machines dynamoélectriques
• H02P 21/14 - Estimation ou adaptation des paramètres des machines, p.ex. flux, courant ou tension

Abrégé

The present application provides a motor control method, a motor control apparatus, a motor system, and a storage medium. The motor control method comprises: obtaining a busbar voltage of a motor; and determining that the busbar voltage is greater than a first voltage threshold or the busbar voltage is less than a second voltage threshold, and controlling a switch tube of an intelligent power module of the motor according to the busbar voltage and a voltage instruction value so as to shut down the motor, wherein the first voltage threshold is greater than the second voltage threshold. According to the technical solution of the present application, the motor can be reliably shut down by means of the busbar voltage control in the case of an overvoltage, undervoltage or power-off busbar voltage fault, which avoids the damage to a controller or the motor in the case of the busbar voltage fault, and eliminates the motor stuck sound under the power-off fault, and the use effect is good.

Classes IPC  ?

• H02H 7/09 - Circuits de protection de sécurité spécialement adaptés pour des machines ou appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou ligne, et effectuant une commutation automatique dans le cas d'un chan pour moteurs dynamo-électriques contre une interruption de phase

Abrégé

Provided are an electric motor control method, an electric motor control apparatus, an electric motor system and a storage medium. The electric motor control method comprises: limiting an instruction value of a quadrature axis current of an electric motor according to a difference value between a bus bar voltage and a voltage threshold, determining a positive limitation or a negative limitation according to the rotational speed of the electric motor and/or calculating a compensation angle of a rotor position angle of the electric motor according to the difference value between the bus bar voltage and the voltage threshold, and determining a lead or a lag relationship of the compensation angle according to the rotational speed of the electric motor so as to compensate for the rotor position angle; and controlling the running of the electric motor according to the instruction value of the quadrature axis current and/or the compensated rotor position angle. By means of the technical solution of the present application, in the process of deceleration braking of an electric motor, a quadrature axis current is limited and/or a rotor position angle is compensated for, and then, the compensated rotor position angle is fed back to the next closed-loop running operation, thereby realizing complete self-calibration control over the electric motor.

Classes IPC  ?

• H02P 21/36 - Dispositions pour le freinage ou le ralentissement; Commande dans quatre quadrants

Abrégé

The present application provides a stator sheet, a stator core, a stator, and a motor. The stator sheet comprises yoke parts and tooth parts, and the tooth parts have one ends connected to the yoke parts and the other ends extending away from the yoke parts, wherein at least part of the stator sheet has a rectangular structure or a sector structure, and each tooth part comprises a first tooth body, a second tooth body, and a third tooth body, the second tooth body being provided on one side of the first tooth body, and the third tooth body being provided on the other side of the first tooth body away from the second tooth body. The present application can improve the winding efficiency and winding convenience of winding coils.

Classes IPC  ?

• H02K 1/14 - Noyaux statoriques à pôles saillants
• H02K 3/34 - Enroulements caractérisés par la configuration, la forme ou la réalisation de l'isolement entre conducteurs ou entre conducteur et noyau, p.ex. isolement d'encoches

Abrégé

A stator iron core (20), comprising: a stator yoke (111) and a stator tooth (112), the stator yoke (111) having a notch and at least one stator yoke section (1115); the stator tooth (112) comprises at least one stator tooth shoe (1122) and at least two stator tooth bodies (1121), the at least two stator tooth bodies (1121) being arranged along the circumferential direction of the stator iron core (20), the two ends of any one stator tooth body (1121) respectively being connected to the stator yoke section (1115) and the stator tooth shoe (1122); any two adjacent stator tooth bodies (1121) are connected by means of the stator tooth shoe (1122) or the stator yoke section (1115), and the stator tooth shoe (1122) of the stator tooth part (112) and the stator yoke section (1115) of the stator yoke (111) are arranged in a staggered manner along the circumferential direction of the stator iron core (20). The stator yoke (111) of the present stator iron core (20) is a non-annular structure and, compared to annular structures, reduces the circumferential size of the stator yoke (111), thereby reducing the weight of the stator iron core (20), and also facilitating a reduction in the size of an insulating member (12) connected to the stator iron core (20), lightening the motor, and also reducing production costs of the product. Also relating to a stator assembly (10), a motor (1), and an electromechanical device (2).

Classes IPC  ?

• H02K 1/14 - Noyaux statoriques à pôles saillants
• H02K 1/20 - Parties fixes du circuit magnétique avec des canaux ou des conduits pour l'écoulement d'un agent de refroidissement
• H02K 3/18 - Enroulements pour pôles saillants

Abrégé

Disclosed are a switch circuit, a motor control system, and a vacuum cleaner. The switch circuit comprises a power supply unit, an enable unit, a controller, and a switch unit, wherein the controller is used for, when a receiving end receives an on signal, continuously outputting an enable signal by means of a sending end till the receiving end receives an off signal and maintaining the enable signal till a shutdown control program is completely executed, and the controller is further used for starting to execute a motor operation control program when the receiving end receives the on signal and starting to execute a motor shutdown control program when the receiving end receives the off signal. The switch circuit can avoid a motor entering a free shutdown state due to the switch circuit being in an uncontrollable state while implementing zero-current standby power consumption, thereby avoiding long time of shutdown ending sound and low-frequency vibration, and improving use experience of users; moreover, a delay processing circuit does not need to be added, and the present application has the advantages of low cost and strong reliability.

Classes IPC  ?

• H02P 3/06 - Dispositions pour l'arrêt ou le ralentissement de moteurs, génératrices électriques ou de convertisseurs dynamo-électriques pour arrêter ou ralentir individuellement un moteur dynamo-électrique ou un convertisseur dynamo-électrique
• A47L 9/28 - Montage de l'équipement électrique, p.ex. adaptation ou fixation à l'aspirateur; Commande des aspirateurs par des moyens électriques

Abrégé

Provided in the present application are an air conditioner outdoor unit and an air conditioning apparatus. The air conditioner outdoor unit comprises: a housing, wherein the housing is provided with a first air exchange port and a second air exchange port; and a draught fan, which is arranged in the housing and located between the first air exchange port and the second air exchange port. The draught fan comprises an electric motor, a first fan and a second fan, wherein the electric motor comprises two rotors which rotate independently of each other, and a first output shaft and a second output shaft connected to the two rotors separately; and the first output shaft and the second output shaft protrude, separately, towards the same side of an axial direction of the electric motor in the axial direction of the electric motor, are separately fixedly connected to the first fan and the second fan, and are used for driving the first fan and the second fan to rotate independently of each other. According to the present application, one electric motor is used for driving the first fan and the second fan to rotate at the same speed or different speeds, or in the same direction or different directions, such that the air conditioner outdoor unit has the functions of heat exchange, self-cleaning, self-drying, headwind starting, etc., and has the advantages of being easy to install, small in size specification, large in air volume, high in energy efficiency, low in manufacturing cost, etc.

Classes IPC  ?

• F24F 1/38 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale Éléments extérieurs séparés, p.ex. élément extérieur à relier à un élément intérieur séparé comprenant un compresseur et un échangeur de chaleur - Parties constitutives des ventilateurs des éléments extérieurs, p.ex. orifices d'admission évasés ou supports des ventilateurs

Abrégé

The present application provides a motor and a fan. The motor comprises: a stator assembly, comprising a stator core and two sets of mutually independent windings, a hollow channel being provided in a radial middle part of the stator core, stator teeth protruding towards two axial sides of the stator core being provided at the two axial ends of the stator core, and the two sets of windings being respectively wound around the two sets of stator teeth; two mutually independent rotor assemblies, which are arranged oppositely and coaxially on both sides of the axial direction of the stator assembly, and form an axial air gap with the stator assembly, and the two rotor assemblies being configured to rotate independently of each other; and two mutually independent rotation shaft assemblies, which are coaxially connected to the two rotor assemblies respectively, and project in a direction of the same side away from the stator core along the axial direction of the motor, a part of the two rotation shaft assemblies being both provided in the hollow channel. The present application realizes dual power independent output of a motor, and has significant advantages such as a compact structure, a powerful practical function, convenient mounting, a small axial size, and a low manufacturing cost.

Classes IPC  ?

• H02K 16/02 - Machines avec un stator et deux rotors

Abrégé

The present application provides a motor and a blower. The motor comprises: a stator assembly comprising a stator core and two independent windings. Two axial-direction terminal portions of the stator core are provided with stator teeth protruding and extending toward two axial-direction sides thereof, and the two windings are wound on the two sets of stator teeth, respectively; two independent rotor assemblies oppositely and coaxially disposed at two axial-direction sides of the stator assembly, and forming axial-direction air gaps with the stator assembly, wherein the two rotor assemblies are configured to rotate independently; and two independent rotating shaft assemblies coaxially connected to the two rotor assemblies, respectively, and protruding and extending away from the stator core in an axial direction of the motor. The present application achieves two independent power outputs of one motor, and enables driving two fans to independently rotate at respective rotating speeds and in respective rotating directions without mutual interference, thereby reducing the axial dimension of blowers and lowering costs thereof. The invention provides high practicability, expands functions of blowers, and eliminates gear mechanisms, thereby reducing product manufacturing and installation difficulties.

Classes IPC  ?

• H02K 16/02 - Machines avec un stator et deux rotors

Abrégé

An operation control method and system for a clothing treatment device having a drum and a motor is provided. Load inertia of the drum and a fluctuation parameter of the motor are obtained. Load eccentric mass of the clothing treatment device is obtained based on the load inertia, the fluctuation parameter, and predetermined relationship data that is obtained based on pre-stored load inertia, torque fluctuation and load eccentric mass. The fluctuation parameter can be a torque fluctuation parameter or a rotation speed fluctuation parameter. The clothing treatment device can be controlled according to the load eccentric mass to optimize washing operations. For example, clothing and/or inlet water amount can be timely adjusted according to the calculated load eccentric mass. Thus, the clothing treatment device is prevented from producing significant noise during operations, and the service life of the clothing treatment device can be prolonged.

Classes IPC  ?

• D06F 33/48 - Prévention ou réduction du balourd ou du bruit
• G05B 19/416 - Commande numérique (CN), c.à d. machines fonctionnant automatiquement, en particulier machines-outils, p.ex. dans un milieu de fabrication industriel, afin d'effectuer un positionnement, un mouvement ou des actions coordonnées au moyen de données d'u caractérisée par la commande de vitesse, d'accélération ou de décélération

Abrégé

A fan and an electric appliance. The fan comprises: a driving structure (4); an impeller (1) comprising a cover plate (10) installed at the driving structure (4); a shroud (3) covering the impeller (1); a diffuser (2) positioned at one end of the impeller (1) facing an air outlet (32) and comprising a first protrusion portion (20) connected to the driving structure (4), the first protrusion portion (20) protruding toward the shroud (3), the diffuser (2) further comprising an inner annular member (22), and an outer annular member (24) having a smooth transition connection with the shroud (3), wherein the shroud (3), the cover plate (10) and the diffuser (2) define an air channel comprising a varying cross-section portion close to an air inlet and a constant cross-section portion close to the air outlet. In the fan of the present invention, an air flow can flow through the entire air channel smoothly, and thus the fan has improved efficiency.

Classes IPC  ?

• F04D 25/08 - Ensembles comprenant des pompes et leurs moyens d'entraînement le fluide énergétique étant l'air, p.ex. pour la ventilation

Abrégé

A driving system having a hollow shaft, a solid shaft arranged in the hollow shaft, a stator, a rotor connected to the hollow shaft, a clutch mechanism selectively engaged to one of the stator and the rotor, and a speed reduction mechanism having a planetary carrier assembly engaged to the clutch mechanism, and a planetary gear train connected between the solid shaft and the rotor, wherein where the clutch mechanism is engaged to the stator in a transmission manner, the planetary carrier assembly is connected with the stator, and the rotor drives the solid shaft and the hollow shaft to operate at a differential speed, and where the clutch mechanism is engaged to the rotor in the transmission manner, the planetary carrier assembly is connected with the rotor, and the rotor drives the solid shaft and the hollow shaft to operate at a same speed by the planetary gear train.

Classes IPC  ?

• D06F 37/30 - Dispositions d'entraînement
• D06F 23/02 - Machines à laver avec réceptacles, p.ex. perforés, et avec un mouvement rotatif, p.ex. oscillant, le réceptacle servant aussi bien pour le lavage que pour l'essorage centrifuge et tournant ou oscillant autour d'un axe horizontal
• D06F 33/56 - Commande des phases de fonctionnement, p.ex. optimisation ou amélioration des phases de fonctionnement en fonction des caractéristiques du linge du lavage
• F16D 11/14 - Embrayages dans lesquels les organes ont des parties qui se pénètrent mutuellement avec des organes d'embrayage mobiles selon l'axe uniquement
• F16D 27/108 - Embrayages actionnés magnétiquement; Leur commande ou leurs circuits électriques avec un électro-aimant ne tournant pas avec un organe de l'embrayage, c. à d. sans bagues collectrices avec des organes d'embrayage mobiles selon l'axe
• F16D 27/118 - Embrayages actionnés magnétiquement; Leur commande ou leurs circuits électriques avec un électro-aimant ne tournant pas avec un organe de l'embrayage, c. à d. sans bagues collectrices avec des mâchoires ou des engrenages dentés se pénétrant mutuellement
• F16D 27/14 - Embrayages actionnés magnétiquement; Leur commande ou leurs circuits électriques - Eléments constitutifs
• F16H 3/46 - Transmissions ayant uniquement deux engrenages centraux reliés par des engrenages à mouvement orbital
• F16H 57/021 - Structures de support d'arbres, p.ex. parois de séparation, orifices de logement de paliers, parois de carter ou couvercles avec paliers
• F16H 57/029 - Boîtes de vitesses; Montage de la transmission à l'intérieur caractérisés par des moyens pour rendre hermétiques les boîtes de vitesses, p.ex. pour améliorer l'étanchéité à l'air
• F16H 57/08 - TRANSMISSIONS - Parties constitutives générales des transmissions des transmissions à organes à mouvement orbital
• F16H 63/30 - Caractéristiques de structure des mécanismes finals de sortie

Abrégé

The present disclosure provides a bearing assembly, a rotor assembly and a draught fan. The bearing assembly has a shaft sleeve and a shaft extending through the shaft sleeve. An inner wall of the shaft sleeve is provided with two grooves in a circumferential direction. The shaft is provided with two channels corresponding to the two grooves respectively. The channels and the grooves form two raceways. Multiple rolling bodies are disposed between the shaft and the shaft sleeve and movable in the raceways. The shaft sleeve has an outer diameter of 13 mm, and a portion of the shaft extending within the shaft sleeve has a diameter of 5 mm.

Classes IPC  ?

• F04D 29/049 - Paliers à roulements
• F16C 19/06 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à billes essentiellement du même calibre, en une ou plusieurs rangées circulaires pour charges radiales principalement avec une seule rangée de billes

Abrégé

A bearing assembly, a rotor assembly and a fan, wherein the bearing assembly (1) comprises: a bushing (14), the inner wall thereof being provided thereon with two grooves along the peripheral direction; a shaft (12), the bushing (14) being sleeved on the shaft (12), the shaft (12) being provided thereon with channels that correspond to each groove among the two grooves, and the channels and the corresponding grooves forming a roller track; and a plurality of rolling bodies (16) which are provided between the shaft (12) and the bushing (14) and which move inside of the roller track, wherein the outer diameter of the bushing is 13 mm, and the diameter of the part at which the shaft and the bushing are provided relative to each other is 5 mm. A fan having the bearing assembly (1) may operate reliably under a rotation speed of at least 150000 rpm.

Classes IPC  ?

• F16C 19/18 - Paliers à contact de roulement pour mouvement de rotation exclusivement avec roulements à billes essentiellement du même calibre, en une ou plusieurs rangées circulaires pour charges à la fois radiales et axiales avec plusieurs rangées de billes
• F04D 29/059 - Paliers à roulements

Abrégé

A fan (3), comprising a motor. The motor comprises at least one stator assembly and at least one rotor corresponding to the stator assembly, wherein the stator assembly comprises a detachable connected stator yoke (11) and at least one stator tooth (12), a winding (21) is wound on the stator tooth (12), the stator yoke (11) is provided with stator yoke slots (111) and/or stator protrusions that are adapted to the shape of the stator teeth (12), and the stator teeth (12) pass through the stator yoke slots (111) and/or the stator protrusions in the axial direction to form a stator core (1). The fan also comprises a first rotating shaft (33) that is connected to at least one rotor, and a first fan blade (31) is provided at one end of the first rotating shaft (33) to drive the first fan blade (31) to rotate when the first rotating shaft (33) rotates. The fan (3) has a simple and compact structure; the winding process is convenient and easy to operate; and the motor power expansion capability is good. The connection between the rotor and the first fan blade (31) by means of the first rotating shaft (33) enables the first rotating shaft (33) to drive the first fan blade (31) to rotate during the rotation of the rotor, so that the wind power generated by the first fan blade (31) can also be expanded with the expansion of the motor power.

Classes IPC  ?

• H02K 16/00 - Machines avec plus d'un rotor ou d'un stator
• H02K 1/14 - Noyaux statoriques à pôles saillants

Abrégé

Provided in the present application are a stator assembly and a motor. The stator assembly comprises a stator core which comprises: a stator yoke portion; and at least one stator tooth, each stator tooth being disposed along the axial direction of the stator yoke portion, and the stator teeth being detachably connected to the stator yoke portion; at least one winding wound on the at least one stator tooth, the stator yoke portion being provided with a stator yoke groove and/or a stator boss adapted to the shape of the stator tooth, and the stator tooth passing through the stator yoke groove and/or the stator boss to form the stator core. According to the present application, each stator tooth is detachably connected to the stator yoke portion such that the winding is not limited by the shape of the stator core when wound, the winding mode is flexible, and winding efficiency of the winding is improved. In addition, by reasonably arranging the size of the stator teeth or the spacing between the stator teeth so as to adjust the size of the winding grooves, the number of windings can be flexibly configured such that the power level of the stator core is reasonably adjusted.

Classes IPC  ?

• H02K 1/14 - Noyaux statoriques à pôles saillants

Abrégé

An operation control method and system for a washing machine motor, a washing machine, and a computer-readable storage medium. The method comprises: controlling a rotor of a motor to perform accelerating rotation in a first rotation direction, acquiring a current rotation speed of the motor, and on determining that the rotation speed of the motor has reached a first target rotation speed (N1) and the operation has lasted for a first preset period of time (T1), controlling the rotation speed of the motor to continuously change from the first target rotation speed (N1) to a second target rotation speed (N2) without any stopping time; and on determining that the rotation speed of the motor has reached the second target rotation speed (N2) and the operation has lasted for a second preset period of time (T2), controlling the rotation speed of the motor to continuously change from the second target rotation speed (N2) to the first target rotation speed (N1) without any stopping time, wherein the direction of the first target rotation speed (N1) is opposite to the direction of the second target rotation speed (N2). In the process of switching between the first target speed (N1) and the second target speed (N2) of the washing machine in a washing process, a zero-speed stopping time is eliminated, thereby reducing clothes washing time.

Classes IPC  ?

• D06F 33/02 - Commande d'une série d'opérations dans les machines à laver, p.ex. dispositifs de commande à programme pour les cycles de lavage et de séchage électrique

Abrégé

The present invention relates to the field of electrical equipment, and provides a permanent magnet motor. The permanent magnet motor comprises: a stator core comprising a stator yoke and a plurality of stator teeth, the plurality of stator teeth being circumferentially provided along the annular stator yoke at intervals; and a rotor comprising a permanent magnet holder and a plurality of permanent magnets mounted on the permanent magnet holder. The permanent magnet holder comprises a body extending in the axial direction of the rotor. The plurality of permanent magnets is circumferentially provided along the body at intervals. Each permanent magnet has a side facing the stator teeth. The side of at least one permanent magnet at least partially corresponds to axial end portions of the stator teeth at intervals to provide a magnetic flux having a component in the axial direction of the permanent magnet motor. The present invention can provide the magnetic flux having a component in the axial direction of the permanent magnet motor to the stator teeth by means of the sides of the permanent magnets, so as to increase the total magnetic flux entering the stator teeth.

Classes IPC  ?

• H02K 1/27 - Noyaux rotoriques à aimants permanents
• H02K 1/14 - Noyaux statoriques à pôles saillants
• H02K 16/00 - Machines avec plus d'un rotor ou d'un stator

Abrégé

An electric motor (100) includes an excitation stator (10), a salient-pole rotor (20) and an excitation rotor (30), any two of the excitation stator (10), the salient-pole rotor (20) and the excitation rotor (30) being rotatable relative to each other; and a switching actuator (50) configured to select at least one of the salient-pole rotor (20) and the excitation rotor (30) to serve as a rotor rotatable relative to the excitation stator (10) by selectively fixing relative positions of two of the excitation stator (10), the salient-pole rotor (20) and the excitation rotor (30).

Classes IPC  ?

• H02K 16/02 - Machines avec un stator et deux rotors
• H02K 7/08 - Association structurelle avec des paliers
• H02K 13/00 - Association structurelle de collecteurs de courant et de moteurs ou de génératrices, p.ex. plaques de montage des balais ou connexions avec les enroulements; Agencement des collecteurs de courant dans les moteurs ou les génératrices; Dispositions pour améliorer la commutation

Abrégé

Disclosed are a drive system (10) of a washing machine (100), and a drum washing machine (100) having same. The drive system (10) comprises: an impeller shaft (1), with a first end of the impeller shaft (1) being suitable for being connected to an impeller (40); a drum shaft sleeve (2), with a first end of the drum shaft collar (2) being adapted to be connected to a drum (30); a bracket assembly (3), with the drum shaft sleeve (2) being arranged on the bracket assembly (3); an electric motor (4); and a belt transmission mechanism (5), wherein the belt transmission mechanism (5) comprises a belt pulley (51) and a belt (52); one end of the belt (52) is sleeved on an outer circumference side of an output shaft (41) of the electric motor (4), and the other end of the belt (52) is sleeved on an outer circumference side of the belt pulley (51); and the belt pulley (51) is connected to a second end of the drum shaft sleeve (2).

Classes IPC  ?

• D06F 37/30 - Dispositions d'entraînement
• D06F 37/40 - Dispositions d'entraînement pour entraîner le réceptacle et un agitateur ou un organe d'impulsion, p.ex. alternativement

Abrégé

Provided is a food processor, comprising: a container (10), a base (20), an electric motor (21), a first rotating shaft (13), a second rotating shaft (14), first cutting tools (11, 15) and a second cutting tool (12), the electric motor (21) mounted inside the base (20) comprising a stator (211), first rotors (212, 214) and second rotors (213, 215), wherein the stator (211), the first rotors (212, 214) and the second rotors (213, 215) are nested with each other; each adjacent pair of the stator (211), the first rotors (212, 214) and the second rotors (213, 215) are separated by an air gap; the first rotors (212, 214) and the second rotors (213, 215) rotate independent from each other; and the first rotors (212, 214) and the second rotors (213, 215) are respectively used for driving the first rotating shaft (13) provided with the first cutting tools (11, 15) and the second rotating shaft (14) provided with the second cutting tool (12) to rotate independently, thereby completely grinding food and improving the grinding efficiency and the grinding effect. The food processor operates in a way of no mechanical differential and no clutch to achieve dual-power food grinding, and has a high integration level, high power density, low energy consumption and high reliability.

Classes IPC  ?

• A47J 43/046 - Machines de ménage non prévues ailleurs, p.ex. pour moudre, mélanger, agiter, pétrir, émulsionner, fouetter ou battre les aliments, p.ex. actionnées par moteur à outils actionnés du côté du fond
• A47J 43/07 - Eléments ou parties constitutives, p.ex. outils pour mélanger ou pour battre
• A47J 43/08 - Mécanismes d'entraînement

Abrégé

A fan (1), comprising a motor (10). The motor (10) comprises a stator (101), a first rotor (102), and a second rotor (103); the stator (101), the first rotor (102), and the second rotor (103) are nested with each other; the stator (101), the first rotor (102), and the second rotor (103) are separated from each other by air gaps; the first rotor (102) and the second rotor (103) rotate independently; the first rotor (102) and the second rotor (103) respectively drive a first rotating shaft (13) provided with a first fan blade (11) and a second rotating shaft (14) provided with a second fan blade (12) to rotate concentrically. The fan realizes double-shaft double-power rotation, and is high in system integration level, high in reliability and low in noise.

Classes IPC  ?

• F04D 29/00 - POMPES À DÉPLACEMENT NON POSITIF - Parties constitutives, détails ou accessoires

Abrégé

An operation control method for a clothing treatment device, comprising: obtaining the load inertia of a drum and the torque fluctuation or speed fluctuation of a motor; obtaining the load eccentricity of the clothing treatment device according to the load inertia, the torque fluctuation, and pre-stored relationship data among storage load inertia, torque fluctuation, and load eccentricity; or obtaining the load eccentricity of the clothing treatment device according to the load inertia, the speed fluctuation, and pre-stored relationship data among storage load inertia, speed fluctuation, and load eccentricity; and controlling the clothing treatment device according to the load eccentricity to adjust the clothing. According to the application, clothing and/or inlet water amount are timely adjusted according to calculated load eccentricity; thus, the clothing treatment device is prevented from producing great noise during operation, and the service life of the clothing treatment device is prolonged.

Classes IPC  ?

• D06F 33/02 - Commande d'une série d'opérations dans les machines à laver, p.ex. dispositifs de commande à programme pour les cycles de lavage et de séchage électrique

Abrégé

A non-mechanical differential coaxial counter-rotating power device (100) includes an inner shaft (51), an outer shaft (52), a reluctance rotor (30), a permanent magnet rotor (40), a stator (10) and a driving device (20). The outer shaft (52) is fitted over the inner shaft (51), an end of the inner shaft (51) protruding from the outer shaft (52). The reluctance rotor (30) is connected to one of the end of the inner shaft (51) and an end of the outer shaft (52), and the permanent magnet rotor (40) is connected to the other one of the end of the inner shaft (51) and the end of the outer shaft (52). The stator (10) is coaxially disposed with the reluctance rotor (30) and disposed at an inner side or an outer side of the reluctance rotor (30) opposite to the permanent magnet rotor (40). The stator (10) includes a stator core (11) and a main winding (12) and an auxiliary winding (13), and the main winding and the auxiliary winding are wound around the stator core (11). The driving device (20) is connected to the main winding (12) and the auxiliary winding (13) to drive the main winding (12) and the auxiliary winding (13), respectively.

Classes IPC  ?

• H02K 16/02 - Machines avec un stator et deux rotors
• H02K 3/20 - Enroulements pour pôles saillants assurant des rôles auxiliaires, p.ex. un effet d'amortissement ou de commutation 
• H02K 11/33 - Circuits d’entraînement, p.ex. circuits électroniques de puissance
• H02K 1/14 - Noyaux statoriques à pôles saillants
• H02K 1/24 - Noyaux rotoriques à pôles saillants
• H02K 1/27 - Noyaux rotoriques à aimants permanents

Abrégé

The present invention provides a power failure protection control method for a permanent magnet synchronous motor control system, a power failure protection control device, and a permanent magnet synchronous motor control system. The power failure protection control method comprises: measuring a voltage value of a direct current bus module in real time; determining whether the duration, for which the voltage value reduces from a first preset voltage value to a second preset voltage value, is less than or equal to a first preset duration; and when the duration is less than or equal to the first preset duration, setting all switch tubes of an intelligent power module into a high-resistance state. All switch tubes of the intelligent power module are set to the high-resistance state, such that the voltage generated, at the direct current bus module, by the back electromotive force transiently produced by a permanent magnet synchronous motor is less than a safety voltage, avoiding the component damage caused by relatively high voltage generated, at the direct current bus module, by the back electromotive force produced by the permanent magnet synchronous motor due to power failure.

Classes IPC  ?

• H02H 7/09 - Circuits de protection de sécurité spécialement adaptés pour des machines ou appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou ligne, et effectuant une commutation automatique dans le cas d'un chan pour moteurs dynamo-électriques contre une interruption de phase
• H02H 9/04 - Circuits de protection de sécurité pour limiter l'excès de courant ou de tension sans déconnexion sensibles à un excès de tension
• H02P 6/00 - Dispositions pour commander les moteurs synchrones ou les autres moteurs dynamo-électriques utilisant des commutateurs électroniques en fonction de la position du rotor; Commutateurs électroniques à cet effet

Abrégé

fqdd of the permanent magnet synchronous motor. The identification method for the permanent magnet flux linkage used in the present invention can perform online identification on the permanent magnet flux linkage without affecting the normal operation of the motor, improving the identification precision, reducing the change in parameters such as speed loop control related to the permanent magnet flux linkage, and improving the control effect for the permanent magnet synchronous motor.

Classes IPC  ?

• H02P 21/14 - Estimation ou adaptation des paramètres des machines, p.ex. flux, courant ou tension
• H02P 25/022 - Moteurs synchrones

Abrégé

Provided are a driving system of a drum washing machine and a drum washing machine. The driving system includes: a drum shaft sleeve, a pulsator shaft, a driving source, a clutch mechanism and a speed reducing mechanism, wherein the pulsator shaft is rotatably provided inside the drum shaft sleeve, the driving source comprises a stator and a rotor, and the rotor is fixedly connected to the drum shaft sleeve; the clutch mechanism is controlled such that same is optionally engaged, in a transmission manner, to one of the stator and the rotor; and the speed reducing mechanism comprises a planet carrier assembly engaged with the clutch mechanism, and a planetary gear train connected, in a transmission manner, between the pulsator shaft and the rotor. With regard to the clutch mechanism, the clutch mechanism is engaged, in a transmission manner, with the stator, the planet carrier assembly is fixedly connected to the stator, and the rotor drives the pulsator shaft and the drum shaft sleeve to operate at different speeds by the planetary gear train; alternatively, the clutch mechanism is engaged, in a transmission manner, with the rotor, the planet carrier assembly is fixedly connected to the rotor, and the rotor drives the pulsator shaft and the drum shaft sleeve to operate at the same speed by the planetary gear train; and the rotor is directly connected to the drum shaft sleeve, so that the mounting span of the rotor is reduced and the integral rigidity is improved.

Classes IPC  ?

• D06F 37/30 - Dispositions d'entraînement

Abrégé

A diffuser (10) and a fan; the diffuser (10) comprises: an annular base (102); an upper surface of the annular base (102) is configured as an annular face (1022); and a plurality of diffusing blades (104) circumferentially spaced on the upper surface; the adjacent two diffusing blades (104) form a fluid inlet at the outer edge of the annular face (1022) and form a fluid outlet at the inner edge of the annular face (1022); the diffusing blades (104) have a blade leading edge (1042) disposed at the fluid inlet and a blade trailing edge (1044) disposed at the fluid outlet, respectively; and the blade leading edge (1042) and/or the blade trailing edge (1044) are (is) spatially inclined relative to the axis of the annular base (102)。 By using the diffuser (10), the diffusing capability and the fluid diverting function can be improved, the impact loss at the fluid inlet and/or fluid outlet can be reduced, and meanwhile the technical effect of improving the diffusing capability can be realized.

Classes IPC  ?

• F04D 29/44 - Moyens de guidage du fluide, p.ex. diffuseurs

Abrégé

Provided are an electric motor stator (100) and an electric motor (200) having same. The electric motor stator (100) comprises a stator iron core (1) and a stator winding (2), wherein the stator iron core (1) comprises a plurality of sub-stator iron cores (11), each of the sub-stator iron cores (11) comprises a stator yoke (111), two sub-stator tooth parts (114) and two spliced outer end parts (115); the two sub-stator tooth parts (114) are respectively located at two ends in a circumferential direction of the stator yoke (111), the two spliced outer end parts (115) are both arranged outside the stator yoke (111) and are respectively opposite the two sub-stator tooth parts (114), each of spliced outer end parts (115) is provided with a connection protrusion (115a) or a connection groove (115b), and two adjacent sub-stator iron cores (11) are spliced by means of cooperation of the connection protrusion (115a) and the connection groove (115b).

Classes IPC  ?

• H02K 1/14 - Noyaux statoriques à pôles saillants

Abrégé

A motor stator (100) and a motor (200) comprising same. The motor stator (100) comprises a stator core (1) and a stator winding (2); the stator core (1) comprises multiple sub-stator cores (11); each of the sub-stator cores (11) comprises a stator yoke (111), at least one stator tooth (112), and two connection outer ends (113); the two connection outer ends (113) are respectively located at the two circumferential ends of the stator yoke (111); the stator tooth (112) is located between the two connection outer ends (113) in the circumferential direction of the stator yoke (111); two grooves (113a) of two connection outer ends (113) where two adjacent sub-stator cores (11) contacting each other constitute a mounting hole (113b); a connection piece is provided in the mounting hole (113b) to implement connection and mounting positioning of the two adjacent sub-stator cores (11).

Classes IPC  ?

• H02K 1/14 - Noyaux statoriques à pôles saillants
• H02K 5/04 - Enveloppes ou enceintes caractérisées par leur configuration, leur forme ou leur construction

Abrégé

A motor stator (100) and a motor (200) comprising same. The motor stator (100) comprises a stator core (1) and a stator winding (2); the stator core (1) comprises multiple sub-stator cores (11); each of the sub-stator cores (11) comprises a stator yoke (111), two sub-stator teeth (114), and two connection outer ends (115); the two sub-stator teeth (114) are respectively located at the two circumferential ends of the stator yoke (111); the two connection outer ends (115) respectively face the two sub-stator teeth (114); two grooves (115a) of two connection outer ends (115) where two adjacent sub-stator cores (11) contacting each other constitute a mounting hole (115b); a connection piece is fitted in the mounting hole (115b) to implement connection and mounting positioning of the two adjacent sub-stator cores (11).

Classes IPC  ?

• H02K 1/14 - Noyaux statoriques à pôles saillants

Abrégé

Provided are a fluid pumping device and a household electric appliance comprising the same. The fluid pumping device comprises a pump shell (2) and a pump cover (1) which surround a pump cavity. The pump cover (1) is connected with an inlet pipe (101) which is downwards inserted into the pump cavity, and an outlet pipe (102) is arranged on the peripheral wall of the pump shell (2), wherein an annular heating portion (11) protruding downwards into the pump cavity is formed at the bottom of the pump shell (2), a top-openable impeller (3) located on the radial inner side of the annular heating portion (11) is arranged in the pump cavity, the bottom end of the inlet pipe (101) is connected with a drainage cover (5) with an opening expanded downwards, the drainage cover (5) is arranged above the top surface of the impeller (3) in a covering and spaced manner, and an axial gap between the bottom surface of the drainage cover (5) and the top surface of the impeller (3) is gradually reduced radially outwards.

Classes IPC  ?

• F04D 29/42 - Carters d'enveloppe; Tubulures pour le fluide énergétique pour pompes radiales ou hélicocentrifuges
• F04D 29/44 - Moyens de guidage du fluide, p.ex. diffuseurs
• F04D 29/58 - Refroidissement; Chauffage; Réduction du transfert de chaleur
• F04D 29/22 - Rotors spécialement pour les pompes centrifuges

Abrégé

Disclosed are a stator assembly, an electric motor and a compressor, wherein the stator assembly comprises two stator parts. Each of the stator parts comprises yokes (1) and teeth (2). Each of the yokes (1) is provided with clamping grooves (11). Each of the teeth (2) comprises a first tooth section (21) and a second tooth section (22). At an radially outer end of the second tooth section (22) is provided a catch (23) corresponding to a clamping groove (11). The two yokes (1) are axially aligned and connected to each other. The catch (23) is correspondingly inserted into a clamping groove (11) of the other one of the stator parts. By means of the above-mentioned technical solution, the stator assembly is formed by the combination of the two stator parts, wherein the teeth (2) of the two stator parts are circumferentially and alternatively arranged, and there is an enough space between adjacent teeth (2) of each stator part, which facilitates the winding of a coil and improves the efficiency, and the yokes (1) of the stator parts are integrally formed, which improves the overall strength of the stator parts.

Classes IPC  ?

• H02K 1/14 - Noyaux statoriques à pôles saillants

Abrégé

The present invention discloses a rotor (10), and a motor and a compressor having the same. The rotor (10) comprises a plurality of rotor laminations (110), and each rotor lamination (110) is provided with a shaft hole (111) and a plurality of accommodation grooves (112). The outer edge of the cross section of each rotor lamination (110) consists of a plurality of first circular arc segments (113) and a plurality of second circular arc segments (114) alternately disposed thereon. The center of a circle formed by each first circular arc segment (113) is offset from the central axis of the shaft hole (111), and the center of a circle formed by each second circular arc segment (114) is located on the central axis of the shaft hole (111). A plurality of rotor laminations (110) constitutes a plurality of rotor lamination sets (130). The first circular arc segments (113) of each rotor lamination (110) in one of two adjacent rotor lamination sets (130) are opposite the second circular arc segments (114) of each rotor lamination (110) in the other of the two adjacent rotor lamination sets (130) with respect to the axial direction of the rotor (10). The rotor (10) further comprises a plurality of magnets disposed in one-to-one correspondence on the plurality of accommodation grooves (112). The rotor features easy and accurate positioning, high concentricity with a stator, high air gap precision, and operates with few overtones, minimal vibration, and low noise etc.

Classes IPC  ?

• H02K 1/27 - Noyaux rotoriques à aimants permanents

Abrégé

A core lamination of a motor stator, core of a motor stator, and compressor. The core lamination of a motor stator comprises a yoke portion (10), a reference axis (20), and multiple teeth (30) provided at the yoke portion (10) and protruding toward the reference axis (20). The multiple teeth (30) at least comprise one arc-top tooth (31) and one backward-shifted tooth. An end surface of the arc-top tooth (31) facing the reference axis (20) is an arced surface forming a central opening (50) having the reference axis (20) as a center axis. An end surface of the backward-shifted tooth facing the reference axis (20) does not coincide with the end surface of the arc-top tooth (31), and at least one portion thereof is offset towards an outer side. In this way, the present invention enables superior concentric alignment while reducing magnetic field harmonics in an air gap, thus controlling air gap precision.

Classes IPC  ?

• H02K 1/12 - Parties fixes du circuit magnétique

Abrégé

An impeller (100), fan and motor, the impeller (100) comprising an approximately conical hub (11) and a plurality of blades (12), provided at intervals along a circumferential direction on a peripheral surface of the hub (11). The blades comprise a front edge surface at an inlet end and a rear edge surface at an outlet end. The blades (12) are flat plates that have been twisted. Front edge sections and rear edge sections of the blades (12) are respectively twisted in opposite circumferential directions and form slopes. By adopting an impeller having this structure, fluid loss at the inlet and outlet ends can be effectively reduced, expanding the effective working area of the impeller, markedly improving the operating performance of the impeller, thereby improving the overall performance of a fan and motor employing the impeller having this structure.

Classes IPC  ?

• F04D 29/30 - Aubes
• F04D 29/24 - Aubes

Abrégé

An impeller (100), fan and motor, the impeller (100) comprising an approximately conical hub (11) and a plurality of blades (12), provided at intervals along a circumferential direction on a peripheral surface of the hub (11). The blades comprise a front edge surface (121) at an inlet end and a rear edge surface (122) at an outlet end. The blades are flat plates that have been twisted. Rear edge sections of the blades are twisted relative to a circumferential direction and form slopes.

Classes IPC  ?

• F04D 29/28 - Rotors spécialement adaptés aux fluides compressibles pour pompes centrifuges ou hélicocentrifuges

Abrégé

A motor stator (100) and a motor. The motor stator (100) comprises: a stator iron core (1), the stator iron core (1) comprising a stator yoke part (11) and stator tooth parts (12); and winding coils (2) wrapped on the stator yoke part (11), the winding coils (2) being wrapped between every two adjacent stator tooth parts (12), spatially opposite two winding coils (2) being connected in parallel with each other and joined as a phase, and three phases of winding coils (2) being connected head-to-tail to form double triangle wirings.

Classes IPC  ?

• H02K 3/28 - Schémas d'enroulements ou de connexions entre enroulements

Abrégé

Disclosed is a coaxial counter-rotating power device without mechanical differential speed (100), comprising an inner shaft (51), an outer shaft (52), a magnetic reluctance rotor (30), a permanent magnet rotor (40), a stator (10) and a driving device (20), wherein the outer shaft (52) is sheathed on the inner shaft (51); one end of the inner shaft (51) protrudes out from the outer shaft (52); the magnetic reluctance rotor (30) is connected to one of the end of the inner shaft (51) and an end of the outer shaft (52); the permanent magnet rotor (40) is connected to the other of the end of the inner shaft (51) and the end of the outer shaft (52); the stator (10) is coaxially arranged with the magnetic reluctance rotor (30), and arranged, opposite the permanent magnet rotor (40), at an inner side or an outer side of the magnetic reluctance rotor (30), with the stator (10) comprising a stator iron core (11), and a main winding set (12) and an auxiliary winding set (13) wound on the stator iron core (11); and the driving device (20) is connected to the main winding set (12) and the auxiliary winding set (13) so as to respectively drive the main winding set (12) and the auxiliary winding set (13).

Classes IPC  ?

• H02K 16/02 - Machines avec un stator et deux rotors
• H02K 11/33 - Circuits d’entraînement, p.ex. circuits électroniques de puissance

Abrégé

Disclosed are a washing machine and a control method therefor, wherein the washing machine comprises an inner drum (2); a pulsator (3); and a driving device (4), wherein the driving device (4) comprises a stator (41), a magnetic reluctance rotor (42) and a permanent magnet rotor (43), wherein the stator (41) comprises a first winding set (412) and a second winding set (413) which independently drive the magnetic reluctance rotor (42) and the permanent magnet rotor (43) to rotate respectively; and the magnetic reluctance rotor (42) and the permanent magnet rotor (43) independently drive the inner drum (2) and the pulsator (3) to rotate respectively.

Classes IPC  ?

• D06F 17/06 - Machines à laver à cuves fixes dans lesquelles l'action de lavage est obtenue uniquement par circulation du liquide de lavage par organes d'impulsions rotatifs
• D06F 37/36 - Dispositions d'entraînement pour faire tourner la cuve à plusieurs vitesses
• H02K 16/02 - Machines avec un stator et deux rotors

Abrégé

An air suction device (100) capable of generating an air flow, and a vacuum cleaner or range hood having same. The air suction device (100) capable of generating an air flow comprises: an air inlet module (1), comprising an air guide cavity (11) and a filter member; an air outlet module (2), which is connected to the air inlet module (1), an air outlet cavity (21) being formed within the air outlet module (2); and a drive means (3), provided within the air outlet module (2) and suitable for driving an air flow to flow from the air inlet module (1) to the air outlet module (2).

Classes IPC  ?

• F24C 15/20 - Elimination des fumées de cuisson
• F04D 29/70 - Grilles d'aspiration; Filtres; Séparateurs de poussière; Nettoyage
• F04D 25/08 - Ensembles comprenant des pompes et leurs moyens d'entraînement le fluide énergétique étant l'air, p.ex. pour la ventilation
• F04D 29/30 - Aubes

Abrégé

An exhaust fume collecting hood (10) for a range hood, and a range hood (100) having same, the exhaust fume collecting hood (10) comprising a shell (11) and a cleaning device (15). An air inlet and air outlet (1101) communicated with an air inlet cavity (1102) are formed on the shell (11), and a preset angle is formed between the air guide direction of the air inlet and the air guide direction of the air outlet (1101). The cleaning device (15) is provided on the shell (11) and opposite to the air inlet, and is suitable for spraying water or a cleaning solution into the shell (11).

Classes IPC  ?

• F24C 15/20 - Elimination des fumées de cuisson

Abrégé

A range hood (100), comprising: a machine body (1), a fan system (2), an exhaust fume collecting hood (3), an oil storage box (4), an auxiliary fan, and a cleaning device (5). The exhaust fume collecting hood (3) comprises an inner hood (31) and an outer hood (32); an auxiliary air passage (33) is defined between the inner hood (31) and the outer hood (32); the oil storage box (4) is provided within the auxiliary air passage (33) and divides the auxiliary air passage (33) into an upper cavity (332) and a lower cavity (333); the auxiliary fan is provided within the lower cavity (333) to generate an air flow; the cleaning device (5) is used for cleaning the exhaust fume collecting hood (3).

Classes IPC  ?

• F24C 15/20 - Elimination des fumées de cuisson

Abrégé

A range hood (100), comprising: a body (1), a fan system (2), a fume collecting hood (3), and an auxiliary fan. The fan system (2) is connected to the body (1) and is suitable for generating airflows. The fume collecting hood (3) defines an air duct (34) communicated with the fan system (2). The fume collecting hood (3) comprises an inner hood (31) and an outer hood (32) that are arranged at an interval. An auxiliary air duct (33) is defined between the inner hood (31) and the outer hood (32). The auxiliary fan is provided in the auxiliary air duct (33) to generate airflows.

Classes IPC  ?

• F24C 15/20 - Elimination des fumées de cuisson

Abrégé

A centrifugal pump and an impeller (30) for a centrifugal pump (100). The impeller (30) comprises: an impeller base (31), provided with a drive connection portion which is configured to be connected to a drive device (40) of the centrifugal pump (100); and a plurality of blades (32), provided on the upper surface of the impeller base (31) and spaced apart from one another along the circumference of the impeller base (31); each blade (32) extends from a position adjacent to the center of the impeller base (31) to the edge of the impeller base (31); the upper end surface of at least one blade (32) has an outer end portion which is higher than an inner end portion thereof and comprises at least three mesas (320) which are sequentially connected to one another in the direction from inside to outside, any two connected mesas (320) not extending in the same plane.

Classes IPC  ?

• F04D 29/22 - Rotors spécialement pour les pompes centrifuges
• F04D 29/24 - Aubes
• F04D 29/42 - Carters d'enveloppe; Tubulures pour le fluide énergétique pour pompes radiales ou hélicocentrifuges