An electronic device and a variable frequency control system using the electronic device. The electronic device may comprise: a shielding layer, which is inserted between a current outflow terminal of a switching device and a grounding conductor; and a conductive elastomer, which is used for connecting the current outflow terminal to the shielding layer.
H01L 23/552 - Protection against radiation, e.g. light
H01L 23/373 - Cooling facilitated by selection of materials for the device
H01L 23/528 - Layout of the interconnection structure
H01L 23/532 - Arrangements for conducting electric current within the device in operation from one component to another including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body characterised by the materials
A scroll assembly (CM) and a scroll compressor (100). The scroll assembly (CM) comprises a moving scroll (40) and a stationary scroll (10), and the scroll assembly (CM) additionally has an air suction port (15) and an air exhaust port (123); a moving scroll blade (44) and a stationary scroll blade (14) are joined with one another so as to form between the moving scroll (40) and the stationary scroll (10) an air suction cavity (CS), a central compression cavity (CD), and an intermediate compression cavity located between the air suction cavity (CS) and the central compression cavity (CD), wherein a stationary scroll end plate (12) is provided with modulation holes (121, 121b), the modulation holes (121, 121b) comprising a plurality of groups of modulation holes spaced apart from one another in a molded line direction of the stationary scroll (10), and first groups of modulation holes (1211, 1211b) of the plurality of groups of modulation holes are disposed at positions closer than the other groups of modulation holes to the air suction port (15), so that at the moment when the air suction cavity (CS) starts to be sealed, thus forming in the intermediate compression cavity a first intermediate compression cavity (C1) adjacent to the air suction cavity (CS), the first groups of modulation holes (1211, 1211b) begin to be exposed or have already been exposed within the first intermediate compression cavity (C1). The scroll assembly (CM) and scroll compressor (100) are highly energy efficient, stable and safe in operation, and have low noise.
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F04C 29/12 - Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
A scroll compressor (1), comprising: a housing (10); an orbiting scroll (30); and a fixed scroll (20), the orbiting scroll (30) and the fixed scroll (20) being engaged with each other to form a series of compression cavities. The scroll compressor (1) further comprises a positioning mechanism (PM); the positioning mechanism (PM) comprises a first positioning component (40) and a second positioning component; the first positioning component (40) is fixed relative to the housing (10); the second positioning component is fixed to the fixed scroll (20); the first positioning component (40) is provided with a first guide part (44) and a first axial matching surface; the second positioning component is provided with a second guide part (26a, 26b) and a second axial matching surface; the first guide part (44) and the second guide part (26a, 26b) are suitable for matching with each other to guide the movement of the fixed scroll (20) relative to the first positioning component (40); and the first axial matching surface can abut against the second axial matching surface to define an axial movement range of the fixed scroll (20).
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F04C 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups
The present disclosure relates to a cross slip ring assembly of a scroll compressor and a scroll compressor. The scroll compressor comprises a scroll assembly, wherein the scroll assembly comprises an orbiting scroll member and a fixed scroll member. The cross slip ring assembly is configured to match the scroll assembly so as to prevent the orbiting scroll member from rotating on its axis. The cross slip ring assembly comprises: a slip ring body; and keys, wherein each key comprises a key body extending from the slip ring body and a bushing sleeved on an outer side of the key body, and the key body and the bushing are configured such that the key body matches the bushing to allow the bushing to rotate circumferentially within a predetermined angle range relative to the key body. In the present disclosure, during operation of the scroll compressor, when the stress direction of the key is changed, the bushing can be automatically adjusted/rotated relative to the key body, thereby increasing the area of contact between the key and sliding grooves of the orbiting scroll member, fixed scroll member, etc., so that large-area contact is achieved to avoid local contact and excessive stress. The wear is more uniform (eccentric wear is avoided) due to the increased contact area, thereby finally reducing the wear of the key and/or the sliding grooves.
F04C 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups
5.
COMPRESSOR SYSTEM AND OPERATION METHOD FOR COMPRESSOR SYSTEM
A compressor system and an operation method for a compressor system. The compressor system comprises a first compressor (10), a second compressor (20) and an oil balance pipe (50), wherein the first compressor (10) and the second compressor (20) are arranged in parallel; an oil tank of the first compressor (10) is in communication with an oil tank of the second compressor (20) by means of the oil balance pipe (50); the first compressor (10) is provided with a monitoring apparatus (17) for monitoring lubricating oil in the oil tank of the first compressor (10); the second compressor (20) has a protection apparatus (25) for shutting down the second compressor (20) when the operation of the second compressor (20) is abnormal; and the monitoring apparatus (17) is connected to the protection apparatus (25), such that the protection apparatus (25) can shut down the second compressor (20) in response to a signal indicating that a monitoring value of the lubricating oil exceeds a predetermined range. The compressor system realizes the balance of lubricating oil by using a protection apparatus (25) of a second compressor (20), without the need to use an additional or dedicated control apparatus, thereby simplifying the structure and operation of the compressor system, and reducing the cost of the compressor system.
A compression mechanism, comprising: a fixed scroll, the fixed scroll comprising a fixed scroll end plate and a fixed scroll blade; a movable scroll, the movable scroll comprising a movable scroll end plate and a movable scroll blade, and the fixed scroll blade and the movable scroll blade being mutually engaged to form a series of compression cavities; and a back pressure cavity, the back pressure cavity being in fluid communication with a compression cavity by means of a back pressure channel so as to apply back pressure, the back pressure channel comprising an expanded section and narrowed sections formed on two opposite sides of the expanded section, and the fluid flow cross-sectional area of the expanded section being larger than that of each narrowed section. A scroll compressor comprising the compression mechanism has high reliability.
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
A compression mechanism and a scroll compressor. The compression mechanism comprises a fixed scroll (20) and an orbiting scroll, and further comprises a gas discharge structure. The gas discharge structure comprises: a gas discharge port (24) formed in a base plate (21) of the fixed scroll (20) and running through the base plate (21) in the longitudinal direction so as to be in communication with a compression cavity; and a gas discharge valve (30), comprising a valve plate (35), the valve plate (35) being mounted in alignment with the gas discharge port (24), and at least part of the valve plate (35) being configured to selectively move away from the gas discharge port (24) or move towards the gas discharge port (24) according to the pressure in the compression cavity. The gas discharge structure further comprises a resonant cavity (26) formed in the base plate (21) of the fixed scroll (20), the resonant cavity (26) is in communication with the gas discharge port (24) by means of a guide channel (27), and in a cross-section transverse to the gas flow direction in the guide channel (27) and the resonant cavity (26), the equivalent cross-sectional area of the guide channel (27) is smaller than the equivalent cross-sectional area of the resonant cavity (26). By forming a Helmholtz resonator in the gas discharge structure of the compression mechanism, vibration noise and rattling noise generated by the valve plate of the gas discharge valve in the operation process can be reduced or even eliminated.
The present application relates to a scroll compressor and an Oldham ring and a mating component for the scroll compressor. In the present application, a hollow portion is provided near at least one of engagement walls of a key of the Oldham ring and a corresponding sliding slot of the mating component, so that the at least one engagement wall has a predetermined stiffness and is elastically deformable. As a result, the effective contact area between the Oldham ring and the mating component can be increased, the stress concentration can be reduced, and the wear of the engagement wall can be reduced, thereby improving the performance of the scroll compressor and extending the service life of the scroll compressor.
F04C 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
The present application relates to a rotary shaft support assembly and a compressor. The rotary shaft support assembly includes: a support seat, which is provided with an orifice; and a thrust plate, which is supported on the support seat so that a through-hole of the thrust plate is axially aligned with the orifice of the support seat. The thrust plate is floatable in an axial direction relative to the support seat. The compressor includes the rotary shaft support assembly. With the rotary shaft support assembly and the compressor according to the present application, a rotary shaft can be stably supported during operation of the compressor, and the distribution of stress on the thrust plate of the rotary shaft support assembly can be improved, thereby avoiding the concentration of stress, reducing wear, and reducing noise.
F04C 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
The present application relates to a rotary shaft support assembly and a compressor. The rotary shaft support assembly includes: a support seat, which is provided with an orifice; and a thrust plate, which is supported on the support seat so that a through-hole of the thrust plate is axially aligned with the orifice of the support seat. The thrust plate is floatable in an axial direction relative to the support seat. The compressor includes the rotary shaft support assembly. With the rotary shaft support assembly and the compressor according to the present application, a rotary shaft can be stably supported during operation of the compressor, and the distribution of stress on the thrust plate of the rotary shaft support assembly can be improved, thereby avoiding the concentration of stress, reducing wear, and reducing noise.
F16C 17/04 - Sliding-contact bearings for exclusively rotary movement for axial load only
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F04C 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups
11.
FIXED SCROLL ASSEMBLY, SCROLL COMPRESSOR, AND METHOD FOR MACHINING FIXED SCROLL ASSEMBLY
A fixed scroll assembly, a scroll compressor, and a method for machining a fixed scroll assembly. The fixed scroll assembly comprises a fixed scroll component (20) and a sealing assembly (40), wherein the fixed scroll component (20) comprises an end plate (21), and a fixed scroll roll (22) extending from a first side of the end plate (21); and the fixed scroll component (20) is provided with an enhanced vapor injection hole (25) extending from an upper surface of the fixed scroll component (20) to a compression cavity, such that an enhanced vapor injection fluid outside the compressor comprising the fixed scroll assembly can be supplied to the compression cavity through the enhanced vapor injection hole (25). The enhanced vapor injection hole (25) has a first end leading to the compression cavity, and a second end leading to the exterior of the fixed scroll assembly; the sealing assembly (40) is configured to seal the second end of the enhanced vapor injection hole (25); and part of the enhanced vapor injection hole (25) comprises a recess formed in the fixed scroll roll. The fixed scroll assembly is beneficial for simplifying a machining process for the scroll compressor, and can also significantly increase a flow area of the enhanced vapor injection hole.
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
A fixed scroll assembly (100) and a scroll compressor comprising the fixed scroll assembly (100). The fixed scroll assembly (100) comprises a fixed scroll part (110), at least two bypass inlet sections (111), piston chambers (121), bypass discharge channels (141), pistons (130), a connecting groove (125), a sealing assembly (160), and a bypass control device (150). The piston chambers (121) are respectively provided on the sides of the corresponding bypass inlet sections (111) opposite to a compression cavity and extend to an outer end surface (102b) of an end plate (102). Each piston (130) is housed in the corresponding piston chamber (121), and is configured to be movable between a sealing position and a release position; at the sealing position, the piston (130) covers the corresponding bypass inlet section (111) to prevent the bypass inlet section (111) from being communicated with the corresponding bypass discharge channel (141); and at the release position, the piston (130) is far away from the bypass inlet section (111) to allow the bypass inlet section (111) to be communicated with the bypass discharge passage (141). The connecting groove (125) is provided on the outer end surface (102b) and is configured to communicate the piston chambers (121) with each other. The sealing assembly (160) is configured to seal the connecting groove (125).
F04C 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups
F04C 27/00 - Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
13.
COMPRESSION MECHANISM, SCROLL COMPRESSOR AND CONTROL METHOD FOR SCROLL COMPRESSOR
A compression mechanism (CM), a scroll compressor, and a control method for the scroll compressor. The compression mechanism (CM) comprises: a movable scroll (200) having a movable scroll end plate (20) and a movable scroll blade (22) formed on one side of the movable scroll end plate (20); and a fixed scroll (100) having a fixed scroll end plate (10) and a fixed scroll blade (12) formed on a first side of the fixed scroll end plate (10), wherein the movable scroll blade (22) and the fixed scroll blade (12) are engaged with each other to form a series of compression cavities (C) between the movable scroll (200) and the fixed scroll (100), and the series of compression cavities (C) comprise a central compression cavity (CO) and fluid compression cavities (CL) located on the radial lateral side of the central compression cavity (CO); and the compression mechanism (CM) is provided with a drainage channel (DP) and a drainage control mechanism, and the drainage control mechanism enables the drainage channel (DP) to selectively provide fluid communication between a first fluid compression cavity (CL1) in the fluid compression cavities (CL) and the outside of the compression mechanism (CM).
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F04C 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups
14.
INVERTER, ELECTRONIC DEVICE, COMPRESSOR IDENTIFICATION METHOD, AND STORAGE MEDIUM
Disclosed in the present application are an inverter, an electronic device, a compressor identification method, and a machine-readable storage medium. The inverter comprises a processing unit, which is configured to execute compressor identification processing. Compressor identification processing comprises: applying, by means of an inverter, a predetermined detection voltage to an electric motor of a compressor, which is driven by the inverter, so as to detect a parameter of the electric motor when a rotor of the electric motor of the compressor is prevented from starting to rotate; and identifying the compressor on the basis of the detected parameter of the electric motor and a data set of the compressor.
An electric control apparatus and an electric control method. The electric control apparatus (10) is used for controlling an inverter (209), which is controlled by a pulse width modulation signal, to provide heating electric energy, which is used for heating a compressor, for a stator winding of an electric motor of the compressor. The electric control apparatus (10) comprises: a power determination unit (101), which determines, on the basis of electricity information related to the inverter, the power of the heating electric energy, as an actual heating power (209); and a power closed-loop controller (103), which generates, on the basis of a preset heating power and the actual heating power, a power control signal which is used for performing closed-loop control on the actual heating power by taking the preset heating power as a reference.
H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters with pulse width modulation
16.
METHOD AND APPARATUS FOR MEASURING PARAMETERS OF MOTOR
A method and apparatus for measuring the parameters of a motor, which relate to a method and apparatus for measuring a single-phase or three-phase induction motor, and a method and apparatus for measuring an effective turn ratio of a single-phase induction motor. The method for measuring an effective turn ratio of a single-phase induction motor comprises: applying a first alternating-current voltage, which is within a certain range of a rated working frequency of a single-phase induction motor, to a first winding of the single-phase induction motor; calculating an equivalent inductance of the first winding according to the first alternating-current voltage, a first winding current amplitude of a first winding current flowing through the first winding, and a first phase angle; applying a second alternating-current voltage, which is within a certain range of the rated working frequency of the single-phase induction motor, to a second winding of the single-phase induction motor; calculating an equivalent inductance of the second winding according to the second alternating-current voltage, a second winding current amplitude of a second winding current flowing through the second winding, and a second phase angle; and calculating an effective turn ratio according to the equivalent inductance of the first winding and the equivalent inductance of the second winding.
The present disclosure relates to a housing. The housing comprises a tray and a protective cover, and the protective cover is attached to the tray. The tray and the protective cover are provided with corresponding snap-fit features, so that the snap-fit features can fit each other by means of relative sliding of the protective cover and the tray to position the protective cover relative to the tray.
A vortex compression mechanism and a vortex compressor comprising same. The vortex compression mechanism comprises a fixed vortex (22) and a moving vortex (24). A moving vortex head section (246) and a fixed vortex head section (226) define an exhaust cavity (E) in the following state: the exhaust cavity (E) is in a state of being about to be in fluid communication with a compression cavity but is not in fluid communication with the compression cavity. Concave flow guide grooves (2460) are provided on the inner wall of the moving vortex head section (246), so as to increase the flow of fluid from the compression cavity into the exhaust cavity (E) when the moving vortex head section (246) and the fixed vortex head section (226) are separated. The moving vortex head section (246) is configured to cover at least a portion of the at least one exhaust valve port (P) by the top surface (247) of the moving vortex head section (246) during operation, so as to prevent fluid communication between the compression cavity and the exhaust cavity (E) via the at least one exhaust valve port (P). The compression mechanism and the vortex compressor can reduce the power loss, improve the exhaust efficiency, prevent excessive compression, relieve or eliminate sudden pressure changes in the exhaust process, and improve the vortex strength, and the structure is simple and the cost benefit is high.
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F04C 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups
Disclosed are a fixed scroll and a scroll compressor. The fixed scroll comprises a fixed scroll end plate, a fixed scroll wrap, and a peripheral wall, wherein an air inlet is provided in the peripheral wall, the fixed scroll wrap comprises a starting end connected to the peripheral wall, an engagement position to be engaged with an orbiting scroll wrap, and a scroll section extending from the starting end to the engagement position; the fixed scroll further comprises a flow-guiding passage in fluid communication with the air inlet; the flow-guiding passage extends from the starting end and extends along at least part of the scroll section; the scroll section comprises a first side wall comprising a first section having a first center of curvature and a second section having a second center of curvature, which are respectively located on radially opposite sides of the first side wall.
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F04C 29/12 - Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
Disclosed are a compression mechanism and a scroll compressor. The compression mechanism comprises an orbiting scroll and a non-orbiting scroll comprising a non-orbiting scroll end plate and forms a series of fluid chambers comprising an intermediate compression chamber. An exhaust communication space is provided on the second side of the non-orbiting scroll end plate, and the non-orbiting scroll end plate is provided with a pressure relief port which makes at least one intermediate compression chamber be in selective fluid communication with the exhaust communication space. An end plate surface on the first side of the non-orbiting scroll end plate is provided with an exhaust groove which is in communication with the pressure relief port, the pressure relief port can be in fluid communication with the at least one intermediate compression chamber through the exhaust groove.
F04C 29/12 - Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F04C 23/00 - Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluidsPumping installations specially adapted for elastic fluidsMulti-stage pumps specially adapted for elastic fluids
F04C 28/16 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using lift valves
A scroll compressor includes: a rotary shaft; a compression mechanism including an orbiting scroll and a non-orbiting scroll, an extension portion of the orbiting scroll engaging with an eccentric structure of the rotary shaft via a bushing and a driving bearing having an axial height L1; and a counterweight located on the bushing, a mass center of the counterweight being located above an axial lower end of the driving bearing and having an axial distance L2 to the axial center of the driving bearing, and the ratio R of the axial distance L2 to the axial height L1 satisfying: 0.1≤R≤0.4. The scroll compressor can reduce the contact and wear between the bushing and the driving bearing and reduce the requirements for the manufacturing precision and the mounting precision of components such as the counterweight and the bushing, achieving optimized system design.
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F04C 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups
F04C 23/00 - Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluidsPumping installations specially adapted for elastic fluidsMulti-stage pumps specially adapted for elastic fluids
A scroll compressor comprises a partition plate, a compression mechanism, a capacity adjustment device and a sealing assembly. The sealing assembly isolates a back pressure chamber from a high-pressure space and low-pressure space. A first sealing portion is formed between the sealing assembly and the partition plate. The capacity adjustment device is provided with a variable pressure chamber and configured to establish or break the communication between a first compression chamber and the low pressure space by changing the pressure in the variable pressure chamber. According to the compressor, requirements for pressure in the back pressure chamber of the compressor in different load conditions can be balanced, the axial force on the compression mechanism can be reduced, the power consumption of the scroll compressor can be lowered, the system performance can be improved, and the manufacturing cost can be reduced.
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F04C 27/00 - Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
F04C 28/18 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by varying the volume of the working chamber
F04C 28/26 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves using bypass channels
23.
Main bearing housing assembly and scroll compressor having the main bearing housing assembly
A main bearing housing assembly for a scroll compressor and a scroll compressor having the main bearing housing assembly. The main bearing housing assembly comprises: a main bearing housing; and a thrust plates, the thrust plate being provided at the top of the main bearing housing, and comprising a thrust surface located at the top and in surface contact with the bottom end surface of a scroll assembly of the scroll compressor; the thrust plate comprises: at least one oil inlet hole; a closed oil chamber, the closed oil chamber being formed in the thrust plate; and at least one oil outlet hole, the opening of the at least one oil outlet hole being exposed to the thrust surface; and the at least one oil inlet hole is in communication with the at least one oil outlet hole by means of the closed oil chamber.
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F04C 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups
24.
Main bearing seat for scroll compressor, and scroll compressor
Disclosed are a main bearing seat for a scroll compressor, and a scroll compressor. The main bearing seat comprises substantially ring-shaped thrust parts for supporting a compressing mechanism of the scroll compressor, and a main part body provided with a bearing to support a driving shaft of the scroll compressor, wherein multiple suspension parts extending in a radial direction of the scroll compressor are provided in the thrust parts, and the suspension parts are arranged in an axial direction of the scroll compressor. The main bearing seat can adjust the stiffness of the thrust parts to better achieve stiffness matching and deformation coordination with a bottom face of a movable vortex, thereby increasing the effective contact area on a contact side of a thrust surface to achieve more uniform contact stress distribution and reduce the wear, and providing an appropriate gap on a non-contact side to facilitate lubrication.
F01C 17/06 - Arrangements for drive of co-operating members, e.g. for rotary piston and casing using cranks, universal joints, or similar elements
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
Disclosed is a scroll compressor including: an orbiting scroll having an orbiting scroll end plate and an orbiting volute formed on one side of the orbiting scroll end plate, and a fixed scroll having a fixed scroll end plate and a fixed volute formed on one side of the fixed scroll end plate. The fixed and orbiting scrolls match each other in order to form a series of compression cavities therebetween including a central compression cavity and middle compression cavities located radially outside of the central compression cavity, and. The middle compression cavities include at least a set of a first middle compression cavity and a second middle compression cavity. A fluid channel selectively communicating with a discharge area is provided between the first and second middle compression cavities, and the first middle compression cavity directly communicates with the second middle compression cavity by means of the fluid channel.
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F04C 28/14 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using rotating valves
F04C 29/12 - Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
Provided is a scroll compressor, comprising a compression mechanism and a valve assembly. The compression mechanism is provided with a vent, and the valve assembly is used for selectively opening and closing the vent. The valve assembly comprises a valve plate and at least one valve piece. The valve plate comprises at least one valve orifice; and the valve piece is configured to selectively open and close the valve orifice. The scroll compressor further comprises a guide passageway. The guide passageway is provided with a first port communicating with the valve orifice and a second port communicating with the exhaust opening. The valve assembly and the compressor can significantly prolong the service life of the valve piece, and can provide good guidance for a fluid discharged from the compression mechanism, thereby significantly reducing the resistance of venting and the fluid pressure drop, and improving the effect of venting.
F04C 29/12 - Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
A scroll compressor includes a fixed scroll, a movable scroll, a main bearing housing and an axial compliance mounting mechanism. The fixed scroll is engaged with the movable scroll to compress a working fluid. The main bearing housing has a bearing surface for supporting a movable scroll end plate. The fixed scroll is fixedly connected to a connecting portion of the main bearing housing by the axial compliance mounting mechanism so that the fixed scroll can move in the axial direction by a predetermined distance. The fixed scroll further includes a flange extending radially outward from a circumferential wall portion, having an axial geometric center position between a first surface and a second surface and positioned such that the axial geometric center position is closer to the movable scroll end plate than the axial middle position thereof. The structure can prevent or reduce damage to the axial compliance mounting mechanism.
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
28.
Scroll compressor having sealed-oil interception structure
A scroll compressor having a sealed-oil interception structure, comprising: a partition plate unit which has an orifice, and a first sealing surface located at a bottom side of the partition plate unit and surrounding the orifice; a sealing assembly which is arranged below the partition plate unit and comprises a second sealing surface configured to surround a center hole of the sealing assembly, wherein the second sealing surface abuts against the first sealing surface to form a seal that separates a high-pressure side from a low-pressure side; and an oil interception device provided at the orifice of the partition plate unit. The present compressor may re-introduce a part of lubricating oil to an inner part of a scroll and/or to a low-pressure oil pool side, thereby improving the compression performance and operating stability of the compressor, and reducing the oil circulation rate.
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F04C 27/00 - Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
F04C 28/26 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves using bypass channels
F04C 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups
A scroll expander, comprising: a housing; and an expansion mechanism provided in the housing. A back pressure chamber in fluid communication with a medium pressure chamber is provided in the expansion mechanism and is provided with at least one passage in fluid communication from the back pressure chamber to a low pressure region; the passage is configured such that: the passage is opened when the pressure in the back pressure chamber is lower than the pressure of the low pressure region, and is closed when the pressure in the back pressure chamber is higher than or equal to the pressure of the low pressure region. The scroll expander can avoid the problem of being unable to be started and to operate normally; and the scroll expander is simple in structure, easy to process and manufacture, and high in cost effectiveness.
F01C 1/02 - Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F01C 21/00 - Component parts, details, or accessories, not provided for in groups
F01C 20/06 - Control of, monitoring of, or safety arrangements for, machines or engines specially adapted for stopping, starting, idling or no-load operation
F01C 21/18 - Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
30.
Oil supply mechanism of rotating machinery and rotating machinery having oil supply mechanism
An oil supply mechanism comprises: an oil pump device connected to a rotating shaft of a rotating machinery; a main oil supply passage formed in the rotating shaft substantially in the axial direction of the rotating shaft; and a bypass oil passage in communication with the main oil supply passage and allowing a part of lubricating oil in the main oil supply passage to flow out via the bypass oil passage. The bypass oil passage extends in a direction substantially transverse to the rotating shaft. The bypass oil passage is configured such that a radial distance from an outlet of the bypass oil passage to the axis of the rotating shaft is greater than the radius of the rotating shaft.
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F04C 23/00 - Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluidsPumping installations specially adapted for elastic fluidsMulti-stage pumps specially adapted for elastic fluids
F04C 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups
31.
Damping apparatus for exhaust valve in compressor, exhaust valve assembly, and compressor
A damping apparatus for an exhaust valve in a compressor, an exhaust valve assembly having the damping apparatus, and a compressor using the exhaust valve assembly. The damping apparatus comprises a fixed body; the fixed body comprises an exhaust hole comprises an exhaust hole through which a compression cavity and an exhaust cavity are in fluid communication with each other; the exhaust hole comprises an inlet, an outlet, and an intermediate cavity provided between the inlet and the outlet and allowing the inlet and the outlet to be in fluid communication with each other; the intermediate cavity is configured to enable the backflow of the gas from the exhaust cavity to form a vortex in the intermediate cavity. The damping apparatus has advantages of reducing the force and frequency of impacts on an exhaust valve plate, and prolonging the service life of the valve plate.
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
A scroll compressor including a scroll assembly comprising an orbiting scroll and a non-orbiting scroll; and a silencing device provided above the scroll assembly and comprising a partition plate and a silencer. The partition plate is used to divide an interior space of the scroll compressor into a high-pressure chamber and a low-pressure chamber, and the partition plate has a central through-hole. The silencer is arranged above the gas outlet, the silencer is fixed to the central through-hole, and is independent from the scroll assembly. The silencing device of the scroll compressor can eliminate noise and seal the divided high-pressure and low-pressure chambers, and can be arranged flexibly without interfering with the scroll assembly.
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F04C 27/00 - Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
F04C 28/24 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves
F04C 29/12 - Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
33.
Valve needle assembly and electronic expansion valve having the valve needle assembly
A valve needle assembly includes a valve stem, a valve needle, an elastic element, and a stop structure. The valve needle is connected to the valve stem and axially movable relative to the valve stem. The elastic element is provided between the valve stem and the valve needle. The stop structure is configured to limit axial movement of the valve needle relative to the valve stem so as to prevent the valve needle from prematurely opening the valve hole of the electronic expansion valve under the force of fluid. The electronic expansion valve includes the valve needle assembly.
F25B 41/35 - Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by rotary motors, e.g. by stepping motors
An expander and a fluid circulation system comprising same are disclosed. The expander comprises a housing, an expansion mechanism, an exhaust pipe, an oil sump and a lubricant discharge channel. The expansion mechanism is provided in the housing to expand a high-pressure fluid into a low-pressure fluid. The exhaust pipe discharges the low-pressure fluid out of the expander and comprises an end portion assembled in a first opening of the housing and provided with an exhaust port; the low-pressure fluid enters the exhaust pipe via the exhaust port. The oil sump stores a lubricant in the housing. The lubricant discharge channel discharges the lubricant in the oil sump into the exhaust pipe and/or an external system pipeline and comprises an inlet end having an inlet located at a predetermined oil level of the oil sump and an outlet end having an outlet.
Disclosed are a fluid pumping device and a horizontal compressor. The fluid pumping device comprises a pump structure in the form of an internal-meshing gear pump and is provided with first and second pump members, a pump housing structure for accommodating the pump structure, and at least two suction paths and/or at least two discharge paths. Suction and compression cavities are defined between the first and second pump members; the at least two suction paths are configured to rotate with the pump structure, and a fluid can be sucked into the suction cavity via the at least two suction paths respectively; and the at least two discharge paths are configured to rotate with the pump structure, and the compressed fluid can be discharged from the fluid pumping device via the discharge paths respectively. The fluid pumping device is assembled in the horizontal compressor.
F04C 15/06 - Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
F04C 2/10 - Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
F04C 2/08 - Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
F01M 1/02 - Pressure lubrication using lubricating pumps
F04C 14/04 - Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations specially adapted for reversible machines or pumps
An electronic expansion valve is provided including: a valve body provided with a first port and a second port, a first cavity being defined in the valve body and being in fluid communication with the first port, the valve body also being provided with a valve port between the second port and the first cavity; a drive mechanism including a rotor having a rotor screw and a stator; a valve spindle assembly at least partially disposed in the valve body and being capable of operatively cooperating with the rotor screw for reciprocating motion to adjust the degree of opening of the valve port; and a second cavity isolated and sealed off from the first cavity, wherein a balancing passage is formed in the rotor screw and the valve spindle assembly to enable the second cavity to be in fluid communication with the second port via the balancing passage.
F25B 41/35 - Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by rotary motors, e.g. by stepping motors
F25B 41/34 - Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
37.
Oil supplying mechanism, and horizontal compressor having same
Disclosed are an oil supplying mechanism, and a horizontal compressor having same. Disclosed is an oil supply mechanism for a horizontal compressor, the horizontal compressor including a housing, a motor, a rotating shaft driven by the motor, and a bearing pedestal supporting the rotating shaft. The oil supply mechanism includes a separating member, the separating member being in the form of a ring having a central hole for allowing the bearing pedestal to pass therethrough, and the separating member being configured to separate the housing into an oil storage chamber and a motor chamber with the motor provided therein. The separating member is constructed to have an annular groove opening into the oil storage chamber. The oil supply mechanism and the horizontal compressor having the oil supply mechanism can reduce or minimize free space in the motor chamber and/or facilitate a quality inspection on the structure of a pump.
Disclosed are a movable scroll device for a scroll compressor and a method for manufacturing same. The method includes: manufacturing the movable scroll device by means of casting steps, so that the movable scroll device includes a movable scroll end plate, with a movable scroll blade provided on a first side face of the movable scroll end plate; and a hub vertically extending outwards from the middle of a second side face of the movable scroll end plate; and fabricating at least one centroid adjustment recess on the hub. By the method, the centroid of the movable scroll device can be adjusted in a more flexible, precise, active and targeted manner.
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F04C 23/00 - Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluidsPumping installations specially adapted for elastic fluidsMulti-stage pumps specially adapted for elastic fluids
A scroll compressor includes fixed and orbiting scrolls. The fixed scroll includes a fixed scroll end plate and a spiral fixed wrap extending from the end plate. The orbiting scroll includes an orbiting scroll end plate and an orbiting wrap extending from the end plate and engaging with the fixed wrap to form compression chambers. The fixed wrap includes a first fixed wrap portion on a radially outer side and a second fixed wrap portion on a radially inner side. The first fixed wrap portion is periodically covered by the orbiting scroll end plate and the second fixed wrap portion is always covered by the orbiting scroll end plate while the scroll compressor is operating. A sealing member is provided on one of the first fixed wrap portion and a first covering portion of the orbiting scroll end plate corresponding to the first fixed wrap portion.
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F04C 27/00 - Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
40.
Dual-vane scroll compressor with capacity modulation
Disclosed is a scroll compressor including stationary and movable scroll members engaged with each other. The stationary scroll member defines first and second air inlets and first and second air outlets. A first compression path is formed between the first air inlet outlet, and a second compression path is formed between the second air inlet outlet. The scroll compressor further includes a bypass passage for selectively communicating at least one of the first and second compression paths with a suction pressure area of the compressor. First and second back pressure cavities are formed on a side of the stationary scroll member facing away from the movable scroll member. The first back pressure cavity is in communication with the first compression path by means of a first back pressure passage. The second back pressure cavity is in communication with the second compression path by means of a second back pressure passage.
F01C 1/02 - Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F04C 18/00 - Rotary-piston pumps specially adapted for elastic fluids
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F04C 23/00 - Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluidsPumping installations specially adapted for elastic fluidsMulti-stage pumps specially adapted for elastic fluids
F04C 27/00 - Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
F04C 28/24 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves
F04C 23/02 - Pumps characterised by combination with, or adaptation to, specific driving engines or motors
41.
Pump mechanism and horizontal compressor having same
A pump mechanism for a horizontal compressor comprises: a partition plate disposed in a housing of the horizontal compressor to separate an oil compartment from a motor compartment provided with a motor; and a pump assembly including a first pump and a second pump located in the oil compartment. The first pump sucks oil from the motor compartment to the oil compartment. The second pump delivers the oil from the oil compartment to a lubrication channel inside a rotary shaft. The partition plate is made from a flat plate, and includes: a plate main body extending in a vertical direction; and a flange portion extending from the peripheral edge of the plate main body in an axial direction and secured to the housing. A horizontal compressor including the pump mechanism is also provided.
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F04C 23/00 - Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluidsPumping installations specially adapted for elastic fluidsMulti-stage pumps specially adapted for elastic fluids
F01C 21/00 - Component parts, details, or accessories, not provided for in groups
A scroll compressor is provided, including: a compression mechanism, a driving mechanism, a suction fitting and a lubrication system. The compression mechanism is adapted to compress working fluid and includes a movable scroll component, a fixed scroll component and a suction window, the working fluid flows into the compression mechanism via the suction window. The driving mechanism includes a driving shaft and is adapted to drive the compression mechanism. The working fluid flows into the scroll compressor via the suction fitting and then flow into the compression mechanism. The lubrication system includes a lubricant source and a compression mechanism oil supply device adapted to supply the lubricant to the compression mechanism from the lubricant source. The compression mechanism oil supply device has an oil supply passage and an outflow opening of the oil supply passage is located between an opening of the suction fitting and the suction window.
F04C 23/00 - Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluidsPumping installations specially adapted for elastic fluidsMulti-stage pumps specially adapted for elastic fluids
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F04C 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups
43.
Scroll compressor having stable back pressure chamber with sealing members
A scroll compressor is provided, comprising: a compression mechanism comprising a non-orbiting scroll member and an orbiting scroll member, wherein the orbiting scroll member is axially displaceable between an engagement position and a disengagement position; a main bearing housing adapted to support the compression mechanism; a back pressure chamber formed between the orbiting scroll member and the main bearing housing, wherein the back pressure chamber is in communication with at least one of the compression chambers via a communication passage provided in the orbiting scroll member or the non-orbiting scroll member and is adapted to apply a back pressure to the orbiting scroll member to bias the orbiting scroll member toward the engagement position; and a first sealing means provided between the back pressure chamber and a suction zone of the compression mechanism and capable of maintaining sealing when the orbiting scroll member is axially displaced.
F04C 27/00 - Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F01C 19/00 - Sealing arrangements in rotary-piston machines or engines
F01C 17/06 - Arrangements for drive of co-operating members, e.g. for rotary piston and casing using cranks, universal joints, or similar elements
Disclosed is an exhaust valve (10A, 10B, 10C, 10D, 10E), comprising a valve body (12), wherein the first end of the valve body is provided with a fluid inlet (15); the sidewall of the valve body is provided with at least one fluid outlet (17) in fluid communication with the fluid inlet (15) and a valve flap (20) for opening or closing the fluid outlet; and the axis direction of the fluid outlet (17) is inclined relative to that of the fluid inlet (15). Further disclosed is a compressor comprising the above-mentioned exhaust valve. The exhaust valve has a relatively low fluid resistance, and is able to significantly reduce the pressure drop in the compressor due to the exhaust valve, so that the operating efficiency of the compressor is increased.
F04C 28/24 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F04C 29/12 - Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
F04C 23/00 - Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluidsPumping installations specially adapted for elastic fluidsMulti-stage pumps specially adapted for elastic fluids
45.
Scroll compressor having valve component arranged in passage of back pressure cavity and providing openings for passage of fluid
The present invention relates to a scroll compressor (100). The scroll compressor comprises a shell (10); a fixed scroll component (80) and a moving scroll component (70) arranged in the shell, wherein the fixed scroll component is fixed relative to the shell, and the moving scroll component can float in the axial direction relative to the fixed scroll component; a main bearing base (40) is arranged in the shell to support the moving scroll component, a back pressure cavity (B) is formed between the moving scroll component and the main bearing base and communicated with fluid of a compression cavity (C2) through a communication channel (73), the communication channel (73) is formed in the moving scroll component, and the compression cavity (C2) is formed between the fixed scroll component and the moving scroll component; and valve components (90, 90A) arranged in the communication channel (73) are formed to respond the pressure difference between the compression cavity and the back pressure cavity so as to provide a first aperture and a second aperture, and the second aperture is smaller than the first aperture.
F04C 29/12 - Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F04C 27/00 - Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
F04C 28/24 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves
46.
Scroll compressor with back pressure chamber having leakage channel
A scroll compressor (100) comprises an orbiting scroll component (160); a fixed scroll component (150); sealing components (PS1, PS2, PS3, PS4, PS5, PS6), wherein the sealing components match a concave part (158) on the orbiting scroll component (50) so as to form a back pressure chamber (BC) together, and the sealing components are constructed to separate the back pressure chamber from a high-pressure side and a low-pressure side in the scroll compressor (100); and a leakage path (L), wherein the leakage path (L) is constructed to allow fluid in the back pressure chamber (BC) to leak.
F04C 14/26 - Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves using bypass channels
F04C 23/00 - Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluidsPumping installations specially adapted for elastic fluidsMulti-stage pumps specially adapted for elastic fluids
F04C 27/00 - Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F04C 29/12 - Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
A pressure control valve (100, 200) comprises a valve seat (140, 160) in which is formed a valve hole (142, 162), a first valve sheet member (110, 210) which covers the valve hole and is provided with a fluid passage (118, 218) thereon, and a second valve sheet member (120, 220) which is provided between the valve seat and the first valve sheet member and covers the fluid passage. Wherein, given that the direction directed from the second valve sheet member to the first valve sheet member is a first direction, when the pressure difference across two sides of the first valve sheet member and the second valve sheet member is directed to the first direction and is greater than or equal to a first preset value, the first valve sheet member is opened; when the pressure difference is directed to a second direction opposite to the first direction and is greater than or equal to a second preset value, the second valve sheet member is opened. Also disclosed is a scroll compressor comprising the pressure control valve. Also disclosed is a scroll compressor comprising a throttle valve for preventing or weakening the return flow from the back-pressure chamber to the pressure chamber.
F01C 1/02 - Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F01C 1/063 - Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents with coaxially-mounted members having continuously-changing circumferential spacing between them
F03C 2/08 - Rotary-piston engines of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
F04C 2/02 - Rotary-piston machines or pumps of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F04C 2/063 - Rotary-piston machines or pumps of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents with coaxially-mounted members having continuously-changing circumferential spacing between them
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F04C 29/12 - Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
F16K 15/16 - Check valves with flexible valve members with tongue-shaped laminae
F04C 28/24 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves
F04C 23/00 - Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluidsPumping installations specially adapted for elastic fluidsMulti-stage pumps specially adapted for elastic fluids
A scroll compressor (10), comprising a fixed scroll (150), a movable scroll (160) and a drive shaft (30); the scroll compressor (10) further comprises a movable scroll counterweight (40); the movable scroll counterweight (40) is configured to rotate with the drive shaft (30); and the centrifugal force of the movable scroll counterweight (40) caused by the rotation acts on the hub (162) of the movable scroll (160). The above structure can effectively reduce the impact of the centrifugal force of the movable scroll on the radial seal of a scroll component, thus achieving proper radial sealing force between the fixed scroll and the movable scroll at any rotating speed.
F16F 15/32 - Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels
G05G 1/00 - Controlling members, e.g. knobs or handlesAssemblies or arrangements thereofIndicating position of controlling members
F01C 1/02 - Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F01C 1/063 - Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents with coaxially-mounted members having continuously-changing circumferential spacing between them
F03C 2/02 - Rotary-piston engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F04C 2/02 - Rotary-piston machines or pumps of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F04C 23/00 - Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluidsPumping installations specially adapted for elastic fluidsMulti-stage pumps specially adapted for elastic fluids
F04C 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups
Rotor pump and rotary machinery comprising the same, the rotor pump including a pump body forming an accommodation cavity, a pump wheel rotating in the accommodation cavity and a sealing plate having an eccentric hole that is eccentric relative to a rotation axis of the pump wheel, where a shaft portion of the pump wheel is rotatably fitted in the eccentric hole
The present invention relates to a rotor pump (10), comprising: a pump body (50A) capable of being rotatably driven and forming an accommodation cavity (52) therein; a pump wheel (20, 20A) having a main body part (22) capable of rotating in the accommodation cavity and a first shaft part (24) axially extending from the main body part; and a sealing plate (30) comprising an eccentric hole (32) being eccentric relative to the rotation axis of the pump body; the first shaft part is rotatably fitted in the eccentric hole; a suction channel (25) is formed on one side of the pump wheel, and a discharge channel is formed on the other side of the pump wheel; the suction channel and the discharge channel are respectively in fluid communication with a compression cavity formed between the outer circumference of the pump wheel and the inner circumference of the accommodation cavity. The present invention also relates to a rotary machinery comprising the rotor pump. The rotor pump of the present invention has a simple structure, fewer components and low cost.
F04C 15/00 - Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups
F04C 2/02 - Rotary-piston machines or pumps of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F16N 7/36 - Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with feed by pumping action of the member to be lubricated or of a shaft of the machineCentrifugal lubrication
F04C 27/00 - Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
F04C 2/32 - Rotary-piston machines or pumps having the characteristics covered by two or more of groups , , , or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having both the movement defined in group and relative reciprocation between the co-operating members
F01C 1/02 - Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F04C 23/00 - Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluidsPumping installations specially adapted for elastic fluidsMulti-stage pumps specially adapted for elastic fluids
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
An electronic expansion valve includes a valve component for adjusting the flow of fluid. The valve component includes a valve body, a valve seat provided in the valve body, a valve needle able to open and close the valve seat, an actuating mechanism driving the axial movement of the valve needle and a drive mechanism supplying the actuating mechanism with motive power. The actuating mechanism includes a spindle able to move axially. The electronic expansion valve further includes an electromagnetic retaining mechanism for retaining the spindle. The valve is constructed such that when electricity is supplied to the electromagnetic retaining mechanism, the spindle is retained in a first axial position where the valve needle can adjust the opening degree of the valve seat; when the electricity to the electromagnetic retaining mechanism is cut, the spindle is released into a second axial position where the valve needle closes the valve seat.
A rotary compressor, comprising: a housing, comprising a lubricant oil storage part for containing lubricating oil; a compression mechanism disposed in the housing; a driving mechanism driving the compression mechanism, the driving mechanism comprising a rotation shaft, through-holes extending along the axial direction of the rotating shaft are disposed inside the rotating shaft, and the rotation shaft is in fluid connection with the lubricating oil storage part via the through-holes; and an oil level sensor in fluid connection with the through-holes inside the rotation shaft via a pressurized collection channel. Also disclosed is a rotation mechanism, comprising an oil level sensor in fluid connection with the through-holes inside the rotation shaft via the pressurized collection channel. Accurate and reliable detection of the lubricating oil in a compressor can be done using the pressurized collection channel and the oil level sensor, thus greatly saving cost and improving compressor reliability.
F04B 49/03 - Stopping, starting, unloading or idling control by means of valves
F04B 9/125 - Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having only one pumping chamber reciprocating movement of the pumping member being obtained by a double-acting elastic-fluid motor
F04C 23/00 - Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluidsPumping installations specially adapted for elastic fluidsMulti-stage pumps specially adapted for elastic fluids
F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
A lubricant metering system for a compressor may include a cap, a cap cage, and a shaft. The cap may include an outer surface, a first recess, and a first radial bore extending between the first recess and the outer surface. The cap cage may include a second recess receiving the cap and a lubricant inlet in communication with the first recess via the first radial bore. The shaft may be received within the first recess and may include an axially extending bore and a second radial bore extending between an outer diameter of the shaft and the axially extending bore. The shaft may be mounted for rotation relative to the cap to allow lubricant to flow into the axially extending bore via the first and second radial bores when the second radial bore is aligned with the first radial bore.
patents
