Provided are a refrigeration valve component, a refrigeration valve comprising the refrigeration valve component and a manufacturing method therefor, wherein the refrigeration valve component is connection pipes (C, D, E, and S) or a valve body (27), and is made of a copper-steel bimetal composite material having a multi-layer structure, and the copper-steel bimetal composite material comprises a first copper layer (130) which contacts with a refrigerant flowing through the refrigeration valve component, a steel layer (110) which is used as a structural support for the refrigeration valve component, and a first copper-steel based microalloy layer (120) which is located between the first copper layer (130) and the steel layer (110). The refrigeration valve component manufactured from the copper-steel bimetal composite material having a multi-layer structure can provide a higher compression strength and corrosion resistance capability and reduce the product cost due to introducing the steel layer material, which has a higher strength and a superior corrosion resistance and is less affected by welding heat treatment, as the structural support, compared with the existing copper refrigeration valves and the components thereof.
F16K 11/00 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid
An electronic expansion valve, comprising a drive component and a valve body component, the valve body component comprising a valve body (400) having a flow-path inlet (401) and a flow-path outlet (402), a valve core (800) being disposed within an inner cavity (500) of the valve body (400) and a valve core base (700) having a valve opening part (701); by means of inputting a pulse signal into the drive component, driving the axial movement of the valve core (800) relative to the valve opening part (701) to change the flow area of the valve opening part (701), adjusting the refrigerant flow rate into the electronic expansion valve; the valve core (800) comprises a main body section (801) and an adjustment section (802) facing towards the valve core base (700), the main body section (801) and the adjustment section (802) being connected by means of tapered transition section (803), the adjustment section (802) comprising at least one first arc segment (805) to adjust the refrigerant flow rate variation curve; the valve core base (700) comprises a straight section valve opening part (701) and a tapered opening section (702) extending from the valve opening part (701) in the direction of the valve core (800); the diameter of the valve opening part (701) is defined as Φ2, the diameter of the smallest end of the tapered transition section (803) is defined as Φ3, and the diameter of the large end is Φ5, satisfying the relationship Φ3< Φ2< Φ5; the present electronic expansion valve facilitates adjustment of an air conditioning system, reducing the number of adjustments and improving the stability of the system.
A valve base assembly for an electronic expansion valve and manufacturing method thereof, the valve base assembly comprising: a valve base (12) provided with a valve cavity (121); a second connecting tube (14) fixedly connected to the side wall of the valve base (12), wherein a first central axis (S1) of the second connecting tube (14) is perpendicular to a second central axis (S2) of the valve base (12); along any cross section on which the first central axis (S1) is located, the edge surface (1431) of the second connecting tube (14) does not surpass the inner circumferential surface (1211) of the valve cavity (121). The present valve base assembly ensures that the end part of the second connecting tube (14) does not extend into the valve cavity (121) and will not damage the integrity of the valve cavity (121), which is beneficial for improving the noise during the flow of refrigerant caused by irregular cavity shape. In addition, the coordinating length of the connecting tubes (13, 14) and the valve base (12) can be fully ensured, which is beneficial for improving welding strength, and the consistency of the size of the connecting tubes (13, 14) assembly can also be ensured.
An electronic expansion valve comprises an electromagnetic coil, a valve body (1) provided with a valve port (17, 22, 32, 42), and a valve needle (18, 21, 31) that cooperates with the valve port (17, 22, 32, 42) to perform flow adjustment on the electronic expansion valve. The valve needle (18, 21, 31) comprises a main section (211, 311) and a first tampered portion (212, 312) disposed neighboring to the main section (211, 311). The valve port (17, 22, 32, 42) comprises an equal-diameter straight section portion (222, 321, 421), and when the electromagnetic coil exerts a 0 pulse, the straight section portion (222, 321, 421) is not contact with the valve needle (18, 21, 31), and an intersection plane between a plane on which the top of the straight section portion (222, 321, 421) is located and the valve needle (18, 21, 31) is located on the first tampered portion (212, 312). With the electronic expansion valve, flow can be precisely adjusted at a low-pulse stage, and during assembly, a position of the 0 pulse can be directly obtained by adjusting relative positions of the valve needle (18, 21, 31) and the valve port (17, 22, 32, 42) and by using a flow meter, tremendously improving consistency of 0 pulse flow and greatly reducing the manufacturing cost. In a flow curve of the electronic expansion valve, no interval with an unchanged flow value exists, and flow adjustment can be performed by fully using a small-pulse area, so that an adjustment range of the electronic expansion valve is enlarged.
F16K 1/02 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
5.
DIRECT-ACTION-TYPE ELECTRICALLY-OPERATED VALVE AND ASSEMBLY METHOD THEREFOR
A direct-action-type electrically-operated valve comprises a valve base (30) provided with a valve cavity, a motor (10) disposed on the upper end the valve base, and a screw rod (312). The screw rod (312) is fitted and connected to a nut (41) by means of threads. The nut is connected to a spool (42). Axial positions of a rotor (12) of the motor and the valve base are relatively fixed. The upper end of the screw rod is fixedly connected to the rotor. Driven by the nut, the spool moves along the axial direction of the valve cavity to open or close a valve opening (30a) disposed on the valve base. The spool is a tubular structure provided with a balancing channel, and a seal piece for dividing the valve cavity into two independent cavities is disposed on the periphery of the spool. A gear system is removed from the electrically-operated valve, so that unnecessary rotations are reduced, friction loss is reduced, and a response is direct, reliable and sensitive; the axial positions of the rotor and the valve base are relatively fixed, that is, the relative fixation of the rotor and a coil element during the working enables driving force to be stable; and obviously, for valve openings with a same size, the size of the motor using the valve opening is smaller than that in the background technology, which can meet requirements of miniaturization and large capacity.
A coil device for an electronic expansion valve. The coil device comprises a detachable housing and a stator winding provided in an inner cavity of the housing. A flow channel is provided on the housing. An inlet of the flow channel is in communication with a pouring port, and an outlet thereof is in communication with the inner cavity of the housing; or an injection molding material reaches an end surface of the housing through an injection molding channel, and forms a positioning element on the end surface of the housing. This coil is avoided from using a welding manner to be connected to the housing, thereby avoiding electrochemical corrosion caused by a welding process, prolonging the service life of the coil device, further simplifying the procedure of mounting of the positioning element and the housing, reducing the manufacturing costs of the coil device, and preventing damage of the coil device. Also provided is an electronic expansion valve using the coil device.
Disclosed is an electronic expansion valve, comprising a shell component (3) and a valve seat assembly, wherein the valve seat assembly comprises a first connection pipe (24) and a second connection pipe (23) which are located on the same straight line; the valve seat assembly forms a main valve chamber, the main valve chamber makes an included angle of an acute angle with the first connection pipe, the valve seat assembly is of an integrated structure and is welded and fixed to the shell component, and there is a preset distance between the radial extension line in the welding position of the two and the first connection pipe. When a valve body relatively rotates to perform welding, welding can be performed smoothly without being subject to the obstruction of the first connection pipe, to form an integrated valve body. Further disclosed is a manufacturing method for the electronic expansion valve. The electronic expansion valve is of an integrated structure, so that the leakage rate of the product can be reduced, and the production cost of the product can also be effectively controlled without increasing the thickness and quality of material.
A linear bidirectional electromagnetic valve. A main valve body (2) of the linear bidirectional electromagnetic valve is provided with a first interface (2a) and a second interface (2b) both controlled by a piston (3) to be turned on or off. The bidirectional electromagnetic valve also has a first runner (2-1) and a second runner (2-2) both separately communicating with the first interface (2a) and the second interface (2b) to enable a refrigerant to flow out of a piston chamber (4), and the first runner (2-1) and the second runner (2-2) are both disposed in the main valve body (2). The main valve body (2) is provided inside with a guide valve runner (21d), and the piston chamber (4) communicates with a guide valve opening on a guide valve body (1) by using the guide valve runner (21d). A guide valve head (11) of the guide valve body (1) moves to open or close the guide valve opening to turn on or off the first runner (2-1), the second runner (2-2), and the piston chamber (4). The guide valve head (11) of the guide valve body (1) of the electromagnetic valve is separated from the piston (3), and when the electromagnetic valve has a great traffic demand, the stroke of a moving core does not need to be increased; dislocation is not easy to occur on the guide valve head (11) and the main valve body (2), a complicated guide element does not need to be disposed, the structure is simplified, the treatment cost and the assembly process cost are low, and the control precision can meet a requirement.
A bidirectional electromagnetic valve. A piston (3) is disposed in a valve chamber and a piston chamber (4) is formed. A main valve body (2) is provided with a first interface (2a) and a second interface (2b) both controlled by the piston (3) to be turned on or off. The bidirectional electromagnetic valve also has a first runner (2-1) and a second runner (2-2) both separately communicating with the first interface (2a) and the second interface (2b) to enable a refrigerant to flow out of the piston chamber (4), and the first runner (2-1) and the second runner (2-2) are both disposed in the main valve body (2). The main valve body (2) is provided inside with a guide valve runner (21d), and the piston chamber (4) communicates with a guide valve opening on a guide valve body (1) by using the guide valve runner (21d). A guide valve head (11) of the guide valve body (1) moves to open or close the guide valve opening to turn on or off the first runner (2-1), the second runner (2-2), and the piston chamber (4). The guide valve head (11) of the guide valve body (1) of the electromagnetic valve is separated from the piston (3), and when the electromagnetic valve has a great traffic demand, the stroke of a moving core does not need to be increased; dislocation is not easy to occur on the guide valve head (11) and the main valve body (2), a complicated guide element does not need to be disposed, the structure is simplified, the treatment cost and the assembly process cost are low, and the control precision can meet a requirement.
Disclosed are an electronic expansion valve and a connection assembly therefor. The connection assembly (2) comprises a connection seat (21) connected in a sealing manner to an outer housing (1) of the electronic expansion valve and contact pins (22) used for connecting an external control member. The outer housing (1) has a valve chamber with an in-built electrical motor (3). The connection seat (21) has a sealed chamber (211) communicating with the valve chamber, and an insulation sleeve (23) is sheathed in the sealed chamber (211). The insulation sleeve (23) is provided with mounting stations (231) arranged to correspond to terminals (4) of the electrical motor (3), each mounting station (231) being spaced apart in an insulated manner. The insulation sleeve (23) is also provided with connecting holes (232) for the contact pins (22) to pass through. One end of the contact pin (22) passes through the connecting hole (232) and connects to the terminal (4), and the other end thereof extends out of the sealed chamber (211) to form a connecting end used for connecting to an external control member. The insulation sleeve (23) is provided with a mounting station (231) for each terminal (4), thereby separating each terminal (4), preventing short-circuits caused by contact impact between the terminals (4), enabling safer and more reliable use.
Provided is an electronic expansion valve, wherein a valve cavity thereof is provided with a valve stem (24) therein, the valve stem (24) is axially movable along an axial through-hole of a valve seat of the electronic expansion valve to open or close a valve opening (251) provided in the valve seat. The valve stem (24) is provided with an axial through-hole in communication with the valve opening (251), and the axial through-hole side wall of the valve seat and the valve stem (24) are sealed. An end face of the valve stem (24) comprises a sealing face in sealing contact with an end face of the valve seat positioned at the valve opening (251), the sealing face comprises a first sealing face for withstanding an interface refrigerant action force and a second sealing face for withstanding a further interface refrigerant action force, and the effective pressure area of the first sealing face is equal to that of the second sealing face. The force acted on the valve stem (24) is only equal to the sum of the forces acted on the first sealing face and the second sealing face, since the two effective pressure areas are equal, regardless of the refrigerant coming from which interface, the valve stem (24) withstands an equal force, thus balancing the ability to open and close the valve. Further provided is an electronic expansion valve in line contact with the valve seat in a sealing manner, wherein the upper and lower effective pressure areas acted on the valve stem (24) by the refrigerant of an interface are equal, and the upper and lower effective pressure areas acted on the valve stem by the refrigerant of a further interface are equal.
An electronic expanding valve. Its stop component comprises a core shaft (61) fixed relative to a valve seat (1), a spring guide rail (62) sleeved out of the core shaft (61), and a sliding ring (63) cooperated with the spring guide rail (62). One end of the sliding ring (63) protrudes to form a stop rod (64). A stop hole (31a) is provided on the top of a magnet (3). The stop rod (64) runs through the stop hole (31a). The stop rod (64) is maintained in the stop hole (31a) when the sliding ring (63) is located on the upper stop position or on the lower stop position. The structure design of the electronic expanding valve can, on one side, reduce the number of components, simplify the assembling process of the stop rod, and improve the working reliability of the electronic expanding valve, and can, on the other side, reduce the radial size of the magnet so as to save cost of material and minimize the product.
F16K 1/32 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces Details
F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
F25B 41/06 - Flow restrictors, e.g. capillary tubes; Disposition thereof
An electronic expansion valve. A piston component (4) and a valve needle component (3) of the electronic expansion valve are on the same side of a valve core seat (2), so that when a refrigerant flows in a forward direction, the piston component (4) blocks a bypass orifice (212), and the refrigerant flows through a valve core port (211) to one end of a vertical tube (52). The valve needle component (3) adjusts an opening degree of the valve core port (211) through moving in the axial direction. When the refrigerant flows in a backward direction, the piston component (4) opens the bypass orifice (212) through moving upward in the axial direction, and the refrigerant flows through the bypass orifice (212) to one end of a horizontal tube (51). On one hand, the structure design of the electronic expansion valve ensures that the valve needle component is capable of sealing the valve core port easily under a high pressure state when the refrigerant flows in a forward direction, and on the other hand, reduces the axial dimension and radial dimension of the valve seat.
A sleeve (4) is fixed in a main valve cavity (11) of an electronic expansion valve, and a valve core seat (2) of the electronic expansion valve is movably disposed in the sleeve (4) along an axial direction. A circumferential side wall of the sleeve (4) is provided with a sleeve runner (41). A circumferential side wall of the valve core seat (2) is provided with a valve core seat side hole (24). When refrigerants flow forward, the valve core seat (2) closes a main valve port (441) to break communication between the sleeve runner (41) and the valve core seat side hole (24), and the refrigerants flow to a valve port (21) at a valve core through the sleeve runner (41). When the refrigerants reversely flow, the valve core seat (2) moves up to open the main valve port (441) and enable the valve core seat side hole (24) to communicate with the sleeve runner (41). When the refrigerants flow forward, the structure design of the electronic expansion valve can avoid an excessively big impact of high-pressure refrigerants on the valve core seat (2) and prevent it from being eccentric.
An electronic expansion valve. A valve needle component (3) thereof is provided with an axial mounting hole (31), the bottom end of a screw rod (61) is provided with a screw rod spacing part (611), and extends into the axial mounting hole (31), and the opening end of the axial mounting hole (31) is provided with a valve needle spacing part (32) which blocks the screw rod spacing part (611); a compressed elastic component (72) is also arranged between the screw rod (61) and the valve needle component (3); and a preset buffer distance exists between the bottom end of the screw rod (61) and the bottom wall of the axial mounting hole (31). When a coolant flows in a reverse direction, the structural design of the electronic expansion valve can simplify a control program on the one hand, and can avoid the problem that the screw rod is stuck because the valve needle component does not move in time on the other hand.
An electronic expansion valve. A main valve thereof (11) has fixed therein a sleeve cylinder (4). The lower end part of the sleeve cylinder (4) is supported by a valve base (1). Also, the lower end part of the sleeve cylinder (4) surrounds a main valve opening (441). A valve core base (2) is arranged movably along the axial direction within the sleeve cylinder (4). The lower part of the valve needle component (3) extends into the sleeve cylinder (4) to open and close the valve core valve opening (21). The valve cylinder (4) is provided on a circumferential sidewall thereof with a first flow hole (41) in proximity to the main valve opening (441), and a second flow hole (42) away from the main valve opening (441). When a coolant is flowing forwards, the structural design of the electronic expansion valve is capable of preventing the highly pressurized coolant from causing an excessive impact on the valve core base, thus preventing same from being displaced from the center.
An electronic expansion valve comprising a drive component. The drive component comprises a screw rod (61) moving reciprocatively along the axial direction and a nut (62) matching the thread of the screw bolt (61). The lower end part of the screw rod (61) forms a valve needle component (611). A main valve cavity (11) has fixed therein a sleeve cylinder (4). The upper part of the sleeve cylinder (4) matches the nut (62). The lower part of the sleeve cylinder (4) is supported by a valve base (1) and surrounds a main valve opening (441). A valve core base (2) is arranged movably in the axial direction within the sleeve cylinder (4). The lower end part of the screw rod (61) extends into the sleeve cylinder (4) to open and close a valve core valve opening (21). When a coolant is flowing forwards, the structural design of the electronic expansion valve is capable of preventing the highly pressurized coolant from causing an excessive impact on the valve core base (2), thus preventing same from being displaced from the center.
A pressure sensor comprises a base (21) and a diaphragm (23) covered on an opening portion of the base (21), the diaphragm (23) being provided on the inner side with a medium cavity (24) and being provided on the outer side with a fluid cavity for accommodating a fluid of which the pressure is to be measured; and a pad (29) disposed in the medium cavity (24) and having medium passages (291) thereon. In a deformation direction of the diaphragm (23), a distance between the greatest deformation position of the diaphragm (23) and the pad (29) is smaller than or equal to the deformation limit of the diaphragm (23). Also disclosed is a heat exchange device comprising the pressure sensor.
G01L 7/08 - Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges of the flexible-diaphragm type
G01L 9/00 - Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by electric or magnetic pressure-sensitive elementsTransmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
G01L 19/06 - Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
G01L 19/00 - Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
19.
THERMAL EXPANSION VALVE WITH ONE-WAY CONTROL FUNCTION
A thermal expansion valve with one-way control function includes a valve body (1) having an inlet passage (11) and an out passage (12), a temperature sensor (2) installed on one end of said valve body (1), and a first valve core component (4) installed in an inside chamber (13) of said valve body (1). Said first valve core component (4) includes a first valve core (42) and a valve rod (41) against said temperature sensor (2).Said valve body (1) also includes an accommodation component (16) extending from said inlet passage (11) into said valve body (1) and coaxially installed with said inlet passage (11). Said accommodation component (16) has a second valve port (15) connected with said inside chamber (13). Said accommodation component (16) has a second valve core component (5) having a supporting piece (51) and a second valve core (52) matching said second valve port (15). The processing of the structure is convenient and the assembly of the second valve core component is simple and reliable.
A bidirectional solenoid valve comprises a valve seat (1) provided with a main valve port (11) and a valve chamber. A piston (2) is provided in the valve chamber, and the piston (2) divides the valve chamber into an upper chamber (12) and a lower chamber (13). An upper end portion of the piston (2) is provided with a pilot valve port (21). A circulation gap (14) is disposed between a circumferential side wall of the piston (2) and a corresponding inner wall of the valve chamber. The piston is provided with a first branch in unidirectional communication from the upper chamber (12) to an end of a horizontal connecting tube (31), and a second branch in unidirectional communication from the upper chamber (12) to an end of a vertical connecting tube (32). The piston is further provided with a third branch in unidirectional communication from an end of the vertical connecting tube (32) to the upper chamber (12). The bidirectional solenoid valve can reduce the number of components and parts, simplify the assembly process, and reduce the manufacturing cost.
F16K 31/40 - Operating meansReleasing devices actuated by fluid in which fluid from the conduit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor
F16K 31/383 - Operating meansReleasing devices actuated by fluid in which fluid from the conduit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side the fluid acting on a piston
F16K 1/00 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
A ball valve comprises a body. The body has a cavity (11), a first joint end (21) and a second joint end (12). A disc ball (3) and a stem (4) are provided inside the cavity (11). The disc ball (3) is provided with a disc channel (31). A one-way valve (5) having a preset open pressure is provided between the disc channel (31) and the first joint end (21). When the disc ball (3) is cut off from the first joint end (21) and is connected to the second joint end (12), the one-way valve (5) enables one-way connection from the disc channel (31) to the first joint end (21). In addition, further disclosed is a refrigeration system comprising the ball valve.
F16K 5/06 - Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfacesPackings therefor
F16K 15/06 - Check valves with guided rigid valve members with guided stems
An electric three-way valve comprises: an input port, a plurality of output ports and a valve core which rotates in a sliding manner in the valve seat by a driving force of a motor unit, wherein the valve core selectively opens or closes the plurality of output ports, the motor unit is attached as a separated constituent to an outside of an upper end surface of a cylindrical casing introducing refrigerant, the valve core is driven by a gear unit which transmits the driving force of the motor unit and is disposed inside the cylindrical casing, the cylindrical casing includes one opening portion and a side wall with an apex portion, a housing which is fixed to a cylindrical wall portion of the apex portion and is equipped with the motor unit is uprightly formed in the other opening portion, and the housing is attached to the cylindrical casing.
F16K 11/085 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug
F16K 11/06 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only sliding valves
F16K 11/14 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with two or more closure members not moving as a unit operated by one actuating member, e.g. a handle
F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
F25B 5/02 - Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
A bidirectional filter and a heat pump system. The bidirectional filter comprises a housing (200) and at least two control value components (400). The two control value components (400) divide the inner chamber of the housing (200) into a filter chamber (211) and two transitional chambers (212, 213). The control value component (400) comprises a frame body (440) fixed on an inner wall of the housing (200), and an outlet blocking piece (430) fitting an outlet (441) of the frame body (440). The outlet blocking piece (430) is on an outer side of the frame body (440). The bidirectional filter further comprises a protective member (500) located in the filter chamber (211) and fixed relative to the housing (200). The protective member (500) is provided with a protective surface (501) opposite to an outer side surface of the outlet blocking piece (430). When the pressure of a refrigerant in the pipeline is too high, the protective surface (501) of the protective member (500) can limit movement of the outlet blocking piece (430), so as to prevent the flow cross-section between the filter chamber (211) and a connecting pipe (202) from being too small, and make the refrigerant pass smoothly, thereby reducing the adverse effect of the change of the pressure of the refrigerant on the bidirectional filter.
A flow-adjusting valve comprising a valve base (1) and a valve rod (2). The valve base (1) has arranged within a valve cavity thereof a valve opening (121). The valve rod (2) opens or shuts the valve opening (121). The valve rod (2) is tube-shaped, and the lower part thereof is a cylinder. The valve base (1) has arranged at circumferential positions around the valve opening (121) a sealing stepped surface (123). A lower end face of the valve rod (2) is sealedly in contact with or disengaged from the sealing stepped surface (123). Furthermore, the valve opening (121) has protruding upwards along the axial direction thereof a sleeve protrusion part (122). The sealing stepped surface (123) is arranged within the sleeve protrusion part (122). The structure of flow-adjusting valve on the one hand balances a refrigerant pressure exerted along the axial direction of the valve rod (2) while on the other hand improves the service life and sealing performance of the valve rod (2).
An electronic expansion valve comprising a screw rod (1) and a motor (2) provided with an output shaft (21). The output shaft (21) is transmissively connected to the screw rod (1) via a gear system. The gear system is supported on a gear base (3). The screw rod (1) passes through the gear base (3). The electronic expansion valve also comprises a valve base (4) provided with a valve cavity and a motor housing (22) arranged on the exterior of the motor (2). The gear base (3) is further arranged within the valve cavity. The upper end part of the valve base (4) is further connected to the lower end part of the motor housing (22). The structural design of the electronic expansion valve reduces the number of sealed parts for same, thus effectively lowering the probability of leakage and simplifying the assembly structure thereof.
Disclosed in the present invention is an electronic expansion valve, which comprises a valve seat assembly (7) and a valve housing assembly (5) connected to the valve seat assembly (7). A valve stem assembly (6) and a valve port (121) are disposed in the chamber of the valve seat assembly (7), and an electrical motor (51) is situated in the chamber of the valve housing assembly (5). The electrical motor (51) drives the valve stem assembly (6) to move along an axial direction through a gear system (52) so as to adjust the flow rate of the fluid flowing through the valve port (121). The valve seat assembly (7) has a split structure, which comprises a valve seat (1) and a cover (9) connected to the valve seat (1) and to the valve housing assembly (5). A mounting surface (13) is formed on the outer side of the valve seat (1) and a sight glass (8) is connected thereon. The structure of the expansion valve enables the sight glass (8) to be easily attached to the valve seat assembly (7).
F16K 3/02 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing facesPackings therefor
F16K 25/00 - Details relating to contact between valve members and seats
F25B 41/06 - Flow restrictors, e.g. capillary tubes; Disposition thereof
Disclosed in the present invention is a flow regulating valve comprises a valve seat (1) and a casing (2). A motor (21) provided inside the casing (2) is connected to a screw rod (3) through the output shaft of the motor. The screw rod is connected to a screw nut (4) connecting with a valve rod (5), and the inner part of the valve rod (5) is provided with a mounting groove (51). The screw nut (4) is in clearance fit with the mounting groove (51) along the radical direction, and the inner wall of the mounting groove (51) is provided with an annular limiting groove (52). A limiting element (53) provided in the annular limiting groove (52) limits the position along the axial direction of the screw nut (4) and is in clearance fit with the outside of the screw nut. On one hand, the configuration design of the flow regulating valve is able to eliminate the coaxial degree error between the screw rod and the screw nut generated during the processing and assembling of components and parts, on the other hand, it is able to improve the reliability of the axial limitation of the screw nut.
F16K 3/30 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing Details
F16K 31/50 - Mechanical actuating means with screw-spindle
F16K 31/53 - Mechanical actuating means with toothed gearing
A flow control valve comprises a valve seat (1) having a valve port (121) in its valve chamber and a valve rod (2) opening or closing the valve port (121). A sleeve protrusion part (122) projects upward from the valve port (121) in an axial direction thereof. The valve rod (2) is tubular and is cylindrical at the lower end. An open slot (3) matching with a flow curve is provided in the circumferential side wall of one of the sleeve protrusion part (122) and the lower end of the valve rod (2). One of the sleeve protrusion part (122) and the lower end of valve rod (2) is inserted into or extracted from the other to disconnect or connect the open slot (3) with the valve port (121). The structural design of the flow control valve can balance the refrigerant pressure on the valve rod (2) in the axial direction while ensuring that the required flow curve can be obtained.
A thermal expansion valve comprises a valve body (1) and a valve core member (2). The valve body (1) is provided with a first interface cavity (11), a lower cavity (35) with a transmission member (21) built in, and a first sealing member for separating the first interface cavity (11) and the lower cavity (35). A fifth pressure-bearing surface (S5) and a sixth pressure-bearing surface (S6), pressed by a cold medium in the first interface cavity (11) in opposite directions, are disposed on a side wall of the valve core member (2). The first sealing member comprises a first flexible sealing element, disposed between the transmission member (21) and an upper end portion of the valve core member (2) and having a first edge portion (41) connected to the valve body (1) in a sealing manner. A sum of an effective stress area of a first pressure-bearing surface (S1) of the first flexible sealing element and a stress area of the fifth pressure-bearing surface (S5) is substantially equal to a sum of an effective stress area of a third pressure-bearing surface (S3) of the upper end portion of the valve core member (2) and a stress area of the sixth pressure-bearing surface (S6). Through the design of the structure of the thermal expansion valve, in an aspect, reliability of sealing between the valve body (1) and the upper end portion of the valve core member (2) can be ensured, sensitivity of the valve is improved, and difficulty of manufacturing the valve body (1) and the valve core member (2) can be reduced; and in another aspect, pressure influence caused by the cold medium in the first interface cavity (11) on the movement of the valve core member (21) can be eliminated.
An electric valve and a refrigeration system comprising the electric valve. The electric valve comprises a valve base (1), a casing (2), and a cover (3) that connects the valve base (1) and the casing (2). The cover (3) is disposed outside the valve base (1) through a central through hole (31) of the cover (3). The cover (3) is disposed with a first guiding portion (32) fit with the casing (2). The cover (3) further comprises a transitional connection portion (33) disposed with the central through hole (31). The first guiding portion (32) is bent downwards with respect to the transitional connection portion (33), an outer side wall of the first guiding portion (32) is attached to an inner wall of the casing (2), and a lower end portion of the first guiding portion (32) is fixedly connected to a lower end portion of the casing (2). Through the design of the structure of the electric valve, the material cost can be reduced, the axiality between the casing (2) and the cover (3) can be increased, and the heat quantity required when the cover (3) and the casing (2) are welded can be reduced.
Disclosed is a two-way electromagnetic valve, which comprising a valve seat (1) provided with a main valve port (11) and a valve chamber. A piston (2) is provided in the valve chamber, and the valve chamber is divided into an upper chamber (12) and a lower chamber (13) by the piston (2). A pilot valve port (21) is provided in the upper end of the piston (2). A flowing gap (14) is provided between the circumferential sidewall of the piston (2) and the corresponding inner wall of the valve chamber. A first branch are provided in the piston, which can connect one-way the upper chamber (12) to an end of a transverse joint pipe (31), and a second branch which can connect one-way the upper chamber (12) to an end of a vertical joint pipe (32). A third branch which can connect one-way the end of the vertical joint pipe (32) to the upper chamber (12) is also provided in the piston. The structure of the two-way electromagnetic valve can reduce the number of components, simplify the assembly process and reduce the manufacturing cost.
F16K 31/40 - Operating meansReleasing devices actuated by fluid in which fluid from the conduit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor
F16K 31/383 - Operating meansReleasing devices actuated by fluid in which fluid from the conduit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side the fluid acting on a piston
F16K 1/00 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
Disclosed is an electrical expansion valve comprising a drive mechanism, a transmission mechanism, a valve seat and a valve pin component; the valve pin component has a valve pin and a valve stem movable along the axial direction of a valve chamber of the electrical expansion valve so as to control the opening size of the valve opening, and has a returning flexible component; the electrical expansion valve also includes a stopping structure arranged in the valve chamber and having an axial channel, and the valve pin component has a lateral flange; the stopping structure is situated above the flange when the valve pin component is moved upwards to a position where the valve opening is at the maximum opening size, and the minimum radial dimension of the axial channel is smaller than the maximum radial dimension of the flange. When the valve pin of the electrical expansion valve is moved upwards to or above the position where the valve opening is at its maximum size, it will not be able to be moved up any further due to the restriction of the stopping structure, thus when the valve pin component needs to be separated from the other upper components for conducting disassembly and replacement of a coil or other operations, the valve pin component will not move up by a large amount to compress the returning flexible component excessively, so that the service life of the flexible component is extended.
Disclosed are a thermostatic expansion valve and a refrigerating system comprising the thermostatic expansion valve. The thermostatic expansion valve comprises a valve body (1) arranged with an air box on the top, and the inner chamber of the air box is divided into an upper chamber (22) and a lower chamber (23) by a diaphragm (21). Within the inner chamber of the valve body (1) there are provided a valve plug component (3) and a valve port (11) matched with the valve plug component (3). The inner chamber of the valve body (1) is divided into a first interface chamber (12) and a second interface chamber (13) by a sealing line or sealing face (31) between the valve port (11) and the valve plug component (3). At the lower end part of the valve body (1) there is provided a balance chamber (14) to balance the valve plug component (3). The upper end part of the valve plug component (3) is arranged within the lower chamber (23) and the lower end part thereof is arranged within the balance chamber (14) of the valve body (1). The balance chamber (14) is in communication with the lower chamber (23), and the balance chamber (14) is in sealed isolation from both the first interface chamber (12) and the second interface chamber (13). The structure of the thermostatic expansion valve is capable of reducing the systematic pressure difference to which the valve plug component (3) is subjected, such that the regulating precision of the valve plug component (3) is improved.
Disclosed is an expansion valve which comprises a valve body (13) with a chamber (19), a valve seat (16) and a valve core (15) both positioned inside the chamber (19), as well as a first opening (17) and a second opening (6) both communicated with the chamber (19). The valve core (15) moves relative to the valve seat (16), to control the size of the flow passage between the first opening (17) and the second opening (6). The valve core (15) inludes a valve core head (151) toward the valve seat (16). An axial through-hole (1511) is disposed in the valve core head (151). The axial through-hole (1511) is provided with a piston (14) which is connected with the valve body (13). The piston delivers the fluid pressure to the valve body, thereby reducing the effect of the pressure difference between high pressure and low pressure on the valve core and more accurately reflecting the change of the superheat degree at the outlet of the evaporator.
F16K 31/68 - Operating meansReleasing devices responsive to temperature variation actuated by fluid pressure or volumetric variation in a confined chamber
An electric valve for regulating fluid flow includes a valve seat assembly, a nut assembly and a valve needle screw assembly. The valve seat assembly includes a valve seat (12) and a valve core seat (11), and the nut assembly includes a nut (32) for installing said valve needle screw assembly. The lower end of the nut (32) is sleeved with the upper end of the valve core seat (11). The electric valve has high coaxality between the valve needle and the valve core seat, can avoid the problem of eccentric wear, and obviously reduces the friction force when the rotor rotates.
Disclosed are a stop device for an electrically-operated valve and an electrically-operated valve having said stop device. The stop device comprises a spring guide (33) and a slip ring (34) that match and are spiralingly nested one into the other, as well as a nut (32) matched to a threaded stem (23). The spring guide has an upper stop portion (33a) and a lower stop portion (33c). The nut is provided with a radially extending stepped surface and a fastening-and-limiting surface positioned under the stepped surface. The spring guide is sleeved onto the portion above the stepped surface of the nut, and the lower stop portion extends radially to form a positioning portion counterbalancing the stepped surface. A portion below the positioning portion of the lower stop portion fastens into the fastening-and-limiting surface. The stop device for the electrically-operated valve has a simple structure, is reliable and easy to assemble, rapidly stabilizes the spring guide, and reduces assembly time.
An electrically-operated valve for regulating the flow of a fluid comprising a valve seat assembly, a rotor assembly, and a valve needle and screw assembly. The valve seat assembly comprises a valve seat (12) provided with a valve cavity (121), and a valve core seat fixed to the valve seat (12) and having a valve port (113). The valve needle and threaded stem assembly comprises a threaded stem (23) and a valve needle (21) driven by the threaded stem. The electrically-operated valve also comprises a nut assembly. The nut assembly comprises a nut (32) and a connection member (31). The nut is a hollow, ring-like structure and comprises a positioning and orientation portion (80) near the valve seat assembly, a nut connection portion (60) near the rotor assembly, and a supporting portion (70) stabilizing the connection member. The electrically-operated valve makes it easy to ensure coaxiality between the nut and valve needle and threaded stem assembly and the valve core seat and valve opening. This helps avoid the problem of the valve port not being tightly sealed as well as the occurrence of eccentric wear, and improves the reliability of the electrically-operated valve.
An electrical valve for adjusting fluid flow comprises a valve seat (12) provided with a valve chamber (121) and a valve plug seat (11) with a valve port (113) fixed on the valve seat; a valve needle-screw stem assembly comprises a screw stem (23) and a valve needle (21) drivable by the screw stem (23); a nut assembly comprises a nut (32) and a connecting plate (31)， wherein the connecting plate is fixedly connected to the valve seat, the nut thread fits the screw stem, the nut is provided with a lower pilot segment (321) thereof, the valve needle is provided with a lower pilot segment (211), and the valve plug seat is provided with a first pilot segment (111) fitting the lower pilot segment of the nut and a second pilot segment (112) fitting the lower pilot of the valve needle. The electrical valve enables concentricity between the nut and the valve needle-screw stem assembly, and concentricity between the nut and the valve port of the valve plug seat to be easily ensured, so as to prevent the problems of the valve port not being sealed tightly or the valve port being worn eccentrically, such that the operational reliability of the electrical valve is increased.
Disclosed is an electronic expansion valve which comprises a casing (1), a magnet (2) and a lead screw (3). The electronic expansion valve further comprises a spindle (4) provided within the casing. A guide rail (5) is provided outside the spindle (4) and cooperates with a sliding ring (6). One of the guide rail (5) and the spindle (4) is coupled with the lead screw (3) and rotates with it, the other is coupled with the casing, and the guide rail is coupled with the lead screw or the casing through a positioning member. The sliding ring (6) is movably coupled with the spindle (4) in the axial direction of the spindle (4) and is fixed around the circumferential direction of the spindle so as to limit the rotation turns of the guide rail (5) or the spindle (4). On the foundation of ensuring the work reliability, the electronic expansion valve can reduce the height of the valve body efficiently.
F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
F25B 41/06 - Flow restrictors, e.g. capillary tubes; Disposition thereof
F16K 1/00 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
An electronic expansion valve comprises a housing (1), a magnet (2) and a lead screw (3). The electronic expansion valve further includes a mandrel (4) provided in the housing, a guide rail (5) provided on the outer side of the mandrel (4), and a slip-ring (6) matched up with the guide rail (5). One of the guide rail (5) and the mandrel (4) is connected with the lead screw (3) and rotates with the lead screw (3), and the other is connected with the housing (1). The guide rail (5) is connected with the lead screw (3) or the housing (1) by a positioning component. The slip-ring (6) is movably connected with the mandrel (4) along the axial direction of the mandrel (4) and is fixed to the circumference of the mandrel (4) to restrict the number of turns of the guide rail (5) or the mandrel (4). The electronic expansion valve enables effective reduction of the height of the valve body on the basis of the operational reliability.
The invention relates to a device for dispensing a cleaning agent into a dishwasher cleaning chamber having at least one wall, in particular a door, the device having a cover element (2) for closing or opening at least one aperture in a reservoir (1) for storing the cleaning agent, wherein the cover element (2) can be adjusted between a closed position and a release position. The device represents an improvement over the art, which is achieved according to the invention in that at least one actuating device (3) displacing the cover element (2) is provided, wherein the actuating device (3) can be displaced along an actuating path that is different from the displacement path of the cover element (2).
The invention proposes a domestic appliance, such as a washing machine, a dishwasher or the like, which permits process heat to be reused by a flow-type heat exchanger (6) for energy-saving purposes.
The invention relates to a friction damper (1), particularly for a drum washing machine having a spin cycle, comprising a housing and a movable plunger (4) disposed in the housing (2) parallel to the housing longitudinal axis (2a) and guided out of the housing (2), wherein the plunger is provided with a movably guided friction layer (8) on its end located in the housing. The invention is characterized in that the friction lining (8), or a body carrying the friction lining (8), is equipped with a receptacle (22) for receiving an expanding body (23).
The invention improving the prior art provides a dishwasher having a metering device for dispensing operating agents (2) in a working space for dishes, wherein the metering device comprises at least one liquid reservoir (1) for storing an operating liquid (2), particularly a rinse aid (2), wherein at least one closing element is provided for opening and closing a filling opening (3) of the liquid reservoir (1), wherein a tapered filling funnel (5) is provided. The filling funnel (5) is disposed between the filling opening (3) and a filling base (4). The task is solved in that a funnel wall (8) of the filling funnel (5) has an angle of inclination in relation to the liquid level (7) in the filling position, the angle, at least in partial areas, being at least partially less than 45°.
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