An electric valve

Abstract

The electric valve includes a valve body, which includes a valve seat component and a valve core rotor assembly, and the valve core rotor assembly includes a valve shaft assembly, a valve core, a first / second elastic member, and a push rod; the valve shaft assembly includes a valve shaft abutment portion; the valve core is passed through the valve shaft assembly, and the valve core includes a valve core abutment portion, and the valve core abutment portion can abut against the valve shaft abutment portion; the push rod includes a push rod body portion and a push rod abutment portion, and the push rod abutment portion is supported on the second elastic member, and the second elastic member supports the valve core; the first elastic member is sleeved on the second elastic member, and the valve core rotor assembly includes a first abutment portion, and the first elastic member abuts against the first abutment portion and the valve core; the valve shaft assembly includes a channel portion, and the push rod body portion passes through the channel portion; the valve body includes a limiting portion, the valve seat component includes an internal threaded portion, and the valve shaft assembly includes an external threaded portion. When the internal threaded portion and the external threaded portion are not screwed together, the elastic force of the second elastic member on the valve shaft assembly can make the internal threaded portion and the external threaded portion screwed together again.

Description

Technical field

[0001] The present invention relates to the technical field of refrigeration control, and in particular to an electric valve. [Background Technology]

[0002] See Figure 14 CN109723884A discloses an electric valve having a guide bushing 20 and a valve shaft retainer 30. The guide bushing 20 is provided with an external threaded portion 23, and the valve shaft retainer 30 is provided with an internal threaded portion 33. The external threaded portion 23 and the internal threaded portion 33 constitute a thread feed mechanism 28 of the electric valve.

[0003] The electric valve also includes a fixed component 70, the outer periphery of which is sheathed with a restoring spring 75. When the valve shaft retainer 30 moves upward relative to the guide bushing 20, causing the threaded portion 23 of the guide bushing 20 and the threaded portion 33 of the valve shaft retainer 30 to become non-threaded, the restoring spring 75 is in a compressed state, and the valve shaft retainer is subjected to the downward spring force of the restoring spring 75. When the rotor component rotates downward in the reverse direction, the elastic force of the restoring spring 75 can make the movable threaded portion 33 and the fixed threaded portion 23 re-threaded. [Summary of the invention]

[0004] The object of the present invention is to provide an electric valve, comprising a valve body and a coil, wherein the coil is sleeved on the valve body, the valve body comprises a valve seat component and a valve core rotor assembly, and the valve core rotor assembly comprises a valve shaft assembly, a valve core, a first elastic member, a second elastic member, and a push rod;

[0005] The valve shaft assembly includes a valve shaft abutment portion;

[0006] The valve core is provided through the valve shaft assembly, and the valve core includes a valve core abutment portion, and the valve core abutment portion can abut against the valve shaft abutment portion;

[0007] The push rod includes a push rod body and a push rod abutting portion, the push rod abutting portion is supported on the upper end portion of the second elastic member, and the second elastic member is supported on the valve core;

[0008] The first elastic member is sleeved on the second elastic member, the valve core rotor assembly further includes a first abutment portion, the upper end of the first elastic member abuts against the first abutment portion, and the lower end of the first elastic member abuts against the valve core; the valve shaft assembly further includes a channel portion, and the push rod body extends through the channel portion;

[0009] The valve body also includes a limiting portion, the valve seat component includes an internal threaded portion, and the valve shaft assembly includes an external threaded portion. When the internal threaded portion and the external threaded portion are in a non-threaded state, the push rod body abuts against the limiting portion, the upper end portion of the second elastic member abuts against the push rod abutting portion, the upper end portion of the second elastic member abuts against the valve core, and the valve core abutting portion abuts against the valve shaft abutting portion.

[0010] The electric valve provided by the present application, when the internal threaded portion and the external threaded portion are in a non-threaded state, the main body of the push rod abuts against the limiting portion, the upper end portion of the second elastic member abuts against the abutting portion of the push rod, the upper end portion of the second elastic member abuts against the valve core, and the valve core abutting portion abuts against the valve shaft abutting portion. When the valve core rotor assembly rotates in the valve closing direction, the elastic force of the second elastic member on the valve shaft assembly can make the internal threaded portion of the valve seat component and the external threaded portion of the valve shaft assembly re-threaded.

Brief Description of the Drawings

[0011] Figure 1 is a cross-sectional view of the electric valve of the present invention in a fully closed state;

[0012] Figure 2 It is a structural schematic diagram of the valve seat component of the electric valve of the present invention;

[0013] Figure 3 1 is a structural diagram of the valve core rotor assembly of the electric valve of the present invention, and a partial enlarged cross-sectional view thereof;

[0014] Figure 4 This is a cross-sectional view of the valve body of the electric valve of the present invention when the valve core rotor assembly is about to reach the critical point of over-opening;

[0015] Figure 5 This is a cross-sectional view of the valve body of the electric valve of the present invention when the threaded pair of the valve core rotor assembly is over-opened and disengaged;

[0016] Figure 6 2 is a schematic structural diagram of a valve core rotor assembly according to a second embodiment of the present invention;

[0017] Figure 7 2 is a schematic structural diagram of a valve core rotor assembly according to a third embodiment of the present invention;

[0018] Figure 8 2 is a schematic structural diagram of a valve core rotor assembly according to a fourth embodiment of the present invention;

[0019] Figure 9 2 is a schematic structural diagram of a valve core rotor assembly according to a fifth embodiment of the present invention;

[0020] Figure 10 2 is a schematic structural diagram of a valve core rotor assembly according to a sixth embodiment of the present invention;

[0021] Figure 112 is a schematic structural diagram of a valve core rotor assembly according to a seventh embodiment of the present invention;

[0022] Figure 12 2 is a schematic structural diagram of a valve core rotor assembly according to an eighth embodiment of the present invention;

[0023] Figure 13 2 is a schematic structural diagram of a valve core rotor assembly according to a ninth embodiment of the present invention;

[0024] Figure 14 is a cross-sectional view of the electric valve in the background art;

[0025] in, Figures 1-13 The following reference numerals are included:

[0026] 10 valve seat component; 101 valve seat; 102 nut; 103 first connecting pipe portion; 104 second connecting pipe portion; 10a valve port; 10b internal thread portion; 10c fixed stop portion; 10d first inlet and outlet channel; 10e second inlet and outlet channel; 20 valve core rotor assembly; 201 valve shaft assembly; 2011 valve shaft; 2012 bushing; 20121 bushing hole portion; 20122 extension portion; 2013 valve shaft main body; 2014 cylindrical member; 201411 cylindrical member through hole; 2015 valve shaft inner wall portion; 20151 first valve shaft inner wall portion; 20152 valve shaft abutment portion; 20153 second valve shaft inner wall portion; 2016 outer edge portion; 20161 first outer edge portion; 20 162 second outer edge portion; 207 gasket; 201a external thread portion; 201b movable stop portion; 201c rotor fixing portion; 202 valve core; 2021 valve core body portion; 2022 valve core sleeve; 20221 valve core sleeve hole portion; 202a valve core head portion; 202b valve core abutment portion; 203 rotor; 204 second elastic member; 205 push rod; 2051 push rod body portion; 2052 push rod abutment portion; 206 washer; 2061 washer hole portion; 207 gasket; 208 first elastic member; 201a external thread portion 201b movable stop portion; 20a first abutment portion; 20b second abutment portion; 20c channel portion; 20d limiting portion; 30 housing; 40 coil. [Specific implementation method]

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Please refer to Figures 1 to 5 ,in, Figure 1 is a cross-sectional view of the electric valve of the present invention in a fully closed state;

[0029] Figure 2 It is a structural schematic diagram of the valve seat component of the electric valve of the present invention; Figure 31 is a structural diagram of the valve core rotor assembly of the electric valve of the present invention, and a partial enlarged cross-sectional view thereof; Figure 4 This is a cross-sectional view of the valve body of the electric valve of the present invention when the valve core rotor assembly is about to reach the critical point of over-opening; Figure 5 This is a cross-sectional view of the valve body of the electric valve of the present invention when the threaded pair of the valve core rotor assembly is over-opened and disengaged;

[0030] Please refer to Figure 1 , Figure 1 This is a cross-sectional view of the first embodiment of the electric valve provided by the present invention in the fully closed state. In one specific embodiment, the electric valve provided by the present invention includes a valve body and a stator coil 40, which is sleeved on the valve body. The valve body includes a valve core rotor assembly 20, a valve seat component 10, and a housing 30. The stator coil 40 of the electric valve is connected to a drive controller. When the drive controller is energized, it sends a pulse drive signal to the stator coil 40, generating a periodically changing magnetic field, thereby driving the valve core rotor assembly 20 of the electric valve to rotate in the forward or reverse direction. The valve core rotor assembly 20 includes a valve shaft assembly 201. In this embodiment, the valve shaft assembly 201 includes a valve shaft 2011, and the valve shaft 2011 is provided with an external threaded portion 201a. The valve seat component 10 includes a nut 102, and the inner hole of the nut 102 is provided with an internal threaded portion 10b. The valve shaft 2011 is threadedly matched with the nut 31. When the valve core rotor assembly 20 rotates, the valve shaft 2011 will displace along the axial direction, thereby driving the valve core 202 to realize the opening and closing action of the valve port 10a.

[0031] See Figure 1 , is a cross-sectional view of the electric valve of the present invention in a fully closed state. Figure 2 、 Figure 3 The electric valve of the present invention includes a valve body and a coil 40, wherein the valve body includes a valve seat component 10 ( Figure 2 As shown), valve core rotor assembly 20 ( Figure 3 shown) and housing 30.

[0032] The valve seat component 10 has a valve port 10a, and a first inlet and outlet channel 10d and a second inlet and outlet channel 10e. The valve port 10a can be connected to the first inlet and outlet channel 10d and the second inlet and outlet channel 10e to allow a fluid medium (such as a refrigerant) to pass through. In addition, a through hole extending vertically is provided at the approximate center of the valve seat component 10, and an internal threaded portion 10b is provided in the through hole. In this embodiment, the valve seat component 10 includes a nut 102, the nut 102 includes the through hole, and an internal threaded portion 10b is also provided in the through hole of the nut 102. The valve seat component 10 also includes a valve seat 101, a portion of the nut 102 is located in the valve seat 101, and the nut 102 is fixedly connected to the valve seat 101 (for example, by using a connector as an insert and integrally injection molding with the nut 102, and then welding the connector to the valve seat 101). The nut 102 and the valve seat 101 are fixedly connected by welding or press-fitting, or the nut 102 and the valve seat 101 are press-fitted and fixed. In this embodiment, the nut 102 and the valve seat 101 are fixed by welding the connector to the valve seat 101 to achieve fixed connection between the two). Of course, the nut 102 and the valve seat 101 can also be integrally formed, and the valve seat 101 is integrally formed with a valve port 10a (of course, the valve port 10a can also be formed in other components, and then the component is fixedly connected to the valve seat 10a). In addition, in this embodiment, the valve seat 101 is fixedly connected to the first connecting pipe portion 103 and the second connecting pipe portion 104. The first connecting pipe portion 103 and the second connecting pipe portion 104 serve as inflow or outflow channels for the fluid medium of the electric valve, and are generally used to connect to the system pipeline when it is installed in a cooling or heating system such as an air conditioner.

[0033] In this embodiment, the first connecting portion 103 and the second connecting portion 104 are welded to the valve seat 101. Of course, the first connecting portion 103 and the second connecting portion 104 may be omitted, and the flow path for the refrigerant fluid may be directly provided on the valve seat 101. Alternatively, the first connecting portion 103 or the second connecting portion 104 may be sealed with a flange, for example, in applications where the electric valve is used in automotive air conditioners, heat pumps, and other applications requiring rapid maintenance. In this embodiment, the first connecting portion 103 and the second connecting portion 104 are provided as an example.

[0034] The valve core rotor assembly 20 includes a rotor 203 and a valve core 202. The rotor 203 has magnetic poles in the circumferential direction. The outer edge section of the valve shaft 2011 is provided with an external threaded portion 201a. The valve core 202 is inserted into the central through hole of the valve shaft 2011. In addition, the valve core rotor assembly 20 also includes a first elastic member 208 and a second elastic member 204 arranged at the center of the valve shaft 2011, and a recoverable push rod 205 arranged at the upper end of the second elastic member 204. In this embodiment, the first elastic member 208 and the second elastic member 204 are in the form of springs. The valve shaft assembly 201 also includes a sleeve 2012 fixedly connected to the approximately upper end of the valve shaft 2011.

[0035] In addition, the electric valve provided in this embodiment also includes a shell 30 with an opening at one end. The shell 30 is a thin-walled part in the shape of a cover. The lower open side of the shell 30 is tightly welded to the valve seat component 10, thereby forming a accommodating chamber that can accommodate the upper half of the nut 102 and the main part of the valve core rotor assembly 20.

[0036] A vertically extending hole is formed approximately at the center of the nut 102 in the valve seat component 10. An internally threaded portion 10b (also known as a fixed threaded portion) is disposed approximately mid-lower within the hole. This internally threaded portion 10b, in combination with an externally threaded portion 201a (also known as a movable threaded portion) disposed approximately below the valve shaft 2011, constitutes the screw feed mechanism (thread pair) of the electric valve. A fixed stopper 10c protrudes from the annular base of the nut 102. This stopper, in conjunction with a movable stopper 201b disposed on the valve core rotor assembly 20, forms the stopper mechanism at the lower end of the valve's travel. (That is, when the valve core rotor assembly 20 moves downwardly relative to the valve seat component 10 to a certain extent, the movable stopper 201b abuts against the fixed stopper 10c, limiting rotation of the valve core rotor assembly 20 relative to the valve seat component 10 and thereby restricting further downward axial movement of the valve core rotor assembly 20.) When the valve core rotor assembly 20 rotates downward to the lowest end of its stroke, the movable stop portion 201b contacts the corresponding mating surface of the fixed stop portion 10c, thereby controlling the downward movement of the valve core rotor assembly 20.

[0037] The coil 40 of the electric valve receives the driving pulse signal to generate a changing magnetic field, and the rotor 203 in the valve body is excited to rotate. In this embodiment, the valve shaft 2011 is fixedly connected to the rotor 203, so the valve shaft 2011 will rotate synchronously with the rotor 203. The spiral feed mechanism of the valve shaft 2011 and the nut 102 can convert the rotational motion of the rotor 203 into axial movement, thereby driving the valve core 202 so that its valve core head 202a approaches or moves away from the valve port 10a, thereby realizing the linear switching adjustment function of the electric valve flow.

[0038] See Figure 3, which is a schematic structural diagram of the valve core rotor assembly of the electric valve of the present invention, and a partially enlarged cross-sectional view thereof. The valve core rotor assembly 20 of the electric valve comprises a rotor 203 with magnetic poles in the circumferential direction, a valve shaft 2011 fixedly connected to the rotor 203, a valve core 202 inserted into the central through hole of the valve shaft 2011, a first elastic member 208 and a second elastic member 204 disposed within a first valve shaft inner wall portion 20151 (described below) at the center of the valve shaft 2011, a return push rod 205 disposed at the upper end of the second elastic member 204, and a bushing 2012 fixedly connected to the upper end of the valve shaft 2011.

[0039] The electric valve of the present invention sets the second elastic member 204 in the inner hole cavity of the valve shaft 2011, constraining it in the circumferential direction and the up and down directions. The clearance of the second elastic member 204 is smaller than that of the electric valve in the background technology, thereby reducing the noise generated by the movement, and also reducing or avoiding the risk of failure of the spring 204 falling off and shifting.

[0040] In this embodiment, the valve shaft 2011 includes a hole that passes through the upper and lower parts, and the inner wall of the through hole roughly forms a valve shaft inner wall portion 2015. In the axial direction of the valve shaft 2011, the inner diameter of the valve shaft inner wall portion 2015 is not the same. Specifically, the valve shaft inner wall portion 2015 includes a first valve shaft inner wall portion 20151, a valve shaft abutment portion 20152 and a second valve shaft inner wall portion 20153. The first valve shaft inner wall portion 20151 is located above the second valve shaft inner wall portion 20153, and in the plane where the cross section of the valve shaft 2011 is located, the first valve shaft inner wall portion 20151 is located along the orthographic projection of the plane (the orthographic projection is a closed line or annulus) In addition to the orthographic projection of the two valve shaft inner wall portions 20153 along the plane (the orthographic projection is a closed line or annulus), for the convenience of processing and manufacturing, the cross-sections of the first valve shaft inner wall portion 20151 and the second valve shaft inner wall portion 20153 are usually set to be circular. At this time, the inner diameter of the first valve shaft inner wall portion 20151 is larger than the inner diameter of the second valve shaft inner wall portion 20153. In this embodiment, the first valve shaft inner wall portion 20151 and the second valve shaft inner wall portion 20153 are of equal diameter in the height direction. Therefore, the orthographic projections of the first valve shaft inner wall portion 20151 and the second valve shaft inner wall portion 20153 along the plane where the cross section of the valve shaft 2011 is located are also circular.

[0041] In addition, the valve shaft abutment portion 20152 has an extension distance in the horizontal direction, the outer edge of the valve shaft abutment portion 20152 intersects with the first valve shaft inner wall portion 20151, and the inner edge of the valve shaft abutment portion 20152 intersects with the second valve shaft inner wall portion 20153. When the cross-sections of the first valve shaft inner wall portion 20151 and the second valve shaft inner wall portion 20153 are both set to be circular, the orthographic projection of the valve shaft abutment portion 20152 along the plane where the cross section of the valve shaft 2011 is located is a circular ring. In this embodiment, the valve shaft abutment portion 20152 is horizontal. Of course, the valve shaft abutment portion 20152 can also be set to a form that is not completely planar. For example, in the direction away from the center of the valve shaft abutment portion 20152, the valve shaft abutment portion 20152 gradually extends upward or downward. It can be understood that the valve shaft abutment portion 20152 only needs to satisfy that the valve shaft abutment portion 20152 has an extension distance in the horizontal direction.

[0042] Of course, the above describes the structure of a first valve shaft inner wall portion 20151, a valve shaft abutment portion 20152, and a second valve shaft inner wall portion 20153, but the first valve shaft inner wall portion 20151, the valve shaft abutment portion 20152, and the second valve shaft inner wall portion 20153 of the present invention are not limited to the above structure. It is only necessary to satisfy that there is a valve shaft abutment portion 20152 with an extended distance in the horizontal direction between the first valve shaft inner wall portion 20151 and the second valve shaft inner wall portion 20153, and the valve shaft abutment portion 20152 can abut the valve shaft assembly 201.

[0043] In addition, in the present embodiment, the valve shaft 2011 includes an outer edge portion 2016. Specifically, the outer edge portion 2016 includes a first outer edge portion 20161 and a second outer edge portion 20162. The first outer edge portion 20161 is located above the second outer edge portion 20162. In the plane where the cross section of the valve shaft 2011 is located, the orthographic projection of the first outer edge portion 20161 along the plane is located on the periphery of the orthographic projection of the second outer edge portion 20162 along the plane. For the convenience of processing, the cross sections of the first outer edge portion 20161 and the second outer edge portion 20162 are both set to be circular. A rotor fixing portion 201c is provided on the portion of the valve shaft 2011 where an outer edge portion 20161 is located. The rotor 203 and the valve shaft fixing portion 201b can be fixed by direct or indirect welding, riveting, injection molding of magnetic plastic material, gluing, etc. In this embodiment, the connecting piece is injection-molded with the magnetic plastic material as an insert, and then the valve shaft 2011 and the connecting piece are fixedly connected by welding. When the rotor 203 and the valve shaft 2011 are directly connected, the valve shaft 2011 can also be injection-molded with the magnetic plastic material as an insert.

[0044] An external threaded portion 201a is provided at the position of the valve shaft 2011 where the second outer edge portion 20162 is located. The external threaded portion 201a (also called a movable threaded portion) and the internal threaded portion 10b (also called a fixed threaded portion) provided at the inner hole of the nut 102 are combined to constitute the spiral feed mechanism (thread pair) of this electric valve.

[0045] In this embodiment, the valve shaft assembly 201 also includes a bushing 2012, at least part of which is located in the first valve shaft inner wall portion 20151, and the bushing 2012 is fixedly connected to the valve shaft 2011 by pressing or welding. The bushing 2012 also includes a bushing hole portion 20121, which passes through the upper and lower surfaces of the bushing 2012.

[0046] In this embodiment, the valve core 202 is penetrated by the inner wall portion 2015 of the valve shaft (part of the valve core 202 is located at the inner wall portion 2015 of the valve shaft). In addition, the valve core 202 has a stepped shaft structure, which includes a valve core head 202a, which is located at the approximate lower end position of the valve core 202. The tip shape of the valve core head 202a is related to the flow regulation curve required by the electric valve. The valve core 202 also includes a valve core abutment 202b, which is located approximately near the upper end or the upper end position of the valve core 202. In the plane where the cross section of the valve core 202 is located, the orthographic projection of the valve core head 202a along the plane is located and is located within the orthographic projection of the valve core abutment 202b along the plane. In this embodiment, the cross sections of the valve core head 202a and the valve core abutment 202b are both circular, so the diameter of the valve core abutment 202b is larger than the diameter of the valve core head 202a. In this embodiment, the valve core 202 is inserted into the valve shaft inner wall portion 2015 of the valve shaft 2011 from the top down, and its valve core abutting portion 202b can abut against the valve shaft abutting portion 20152, and its valve core head portion 202a passes through the second valve shaft inner wall portion 20153. In the plane where the cross section of the valve core 202 is located, the orthographic projection of the valve core abutting portion 202b along this plane overlaps with the orthographic projection of the valve shaft abutting portion 20152 along this plane. Therefore, the valve core abutting portion 202b can abut against the valve shaft abutting portion 20152 (of course, when a gasket 206 or other component is provided between the valve shaft abutting portion 20152 and the valve core abutting portion 202b so that they do not directly abut each other, the projected relationship between the valve core abutting portion 202b and the valve shaft abutting portion 20152 may not satisfy the above relationship). In this embodiment, the outer edge of the valve core abutment portion 202b and the inner edge of the first valve shaft inner wall portion 20151 are both circular, and the outer diameter of the valve core abutment portion 202b is slightly smaller than the inner diameter of the first valve shaft inner wall portion 20151 of the valve shaft, the outer diameter of the valve core abutment portion 202b is larger than the inner diameter of the second valve shaft inner wall portion 20153, and the outer diameter of the valve core head portion 202a at the largest point is slightly smaller than the inner diameter of the second valve shaft inner wall portion 20153. At this time, the valve core 202 can be supported on the valve shaft abutment portion 20152 of the valve shaft 2011.

[0047] In addition, the valve core rotor assembly 20 of the electric valve of this embodiment further includes a first elastic member 208 and a second elastic member 204. The first elastic member 208 and the second elastic member 204 can be designed as cylindrical coil springs. The first elastic member 208 and the second elastic member 204 are located within the first valve shaft inner wall portion 20151. The cylindrical outer diameter of the first elastic member 208 is smaller than the inner diameter of the first valve shaft inner wall portion 20151, and the inner ring diameter of the first elastic member 208 is larger than the cylindrical outer diameter of the second elastic member 204. The second elastic member 204 is positioned within the cylindrical inner diameter hole of the first elastic member 208, that is, the second elastic member 204 is nested within the inner diameter hole of the first elastic member 208, and the first elastic member 208 is positioned over the second elastic member 204. Because the second elastic member 204 can be nested within the inner diameter hole of the first elastic member 208, the electric valve structure of the present invention can effectively reduce its height compared to the prior art, thereby saving installation space in related equipment.

[0048] The valve core rotor assembly 20 of the electric valve provided by the present invention also includes a push rod 205, which includes a push rod body 2051 and a push rod abutment 2052. In this embodiment, the push rod abutment 2052 is roughly a structure formed by the circumferential extension of the push rod body 2051.

[0049] The push rod abutting portion 2052 is located below the bushing 2012 , and the push rod main body 2051 passes through the bushing hole 20121 .

[0050] The lower end of the first elastic member 208 abuts against the valve core 202, and the upper end of the first elastic member 208 abuts against the bushing 2012. The lower end of the second elastic member 204 abuts against the valve core 202, and the upper end of the second elastic member 204 abuts against the push rod abutting portion 2052 of the push rod 205.

[0051] The push rod abutment portion 2052 can be located at the inner edge of the first elastic member 208. When the push rod 205 overcomes the elastic force of the second elastic member 204 and moves downward, the push rod abutment portion 2052 does not abut against the first elastic member 208, that is, the elastic load of the first elastic member 208 does not act on the push rod 205.

[0052] In the plane where the cross section of the valve core rotor assembly 20 is located, the orthographic projection of the bushing hole portion 20121 along the plane and the orthographic projection of the push rod abutting portion 2052 along the plane have an overlapping area, and the orthographic projection of the push rod main body 2051 along the plane is located within the orthographic projection of the bushing hole portion 20121 along the plane, so the push rod 205 cannot escape from the bushing hole portion 20121 from bottom to top, and the push rod main body 2051 can pass through the bushing hole portion 20121 (of course, when the bushing 2012 and When a washer 206 or other components are provided between the push rod abutting portion 2052 so that they do not directly abut against each other, the projection relationship between the bushing hole portion 20121 and the push rod abutting portion 2052 may not satisfy the above relationship). In this embodiment, the outer edge of the push rod abutting portion 2052 and the cross-section of the bushing hole portion 20121 are both circular. At this time, the outer diameter of the push rod abutting portion 2052 is larger than the inner diameter of the bushing hole portion 20121, and the diameter of the push rod main body portion 2051 is smaller than the inner diameter of the bushing 2012 hole portion. The upper end of the push rod main body 2051 passes upward from the bushing hole 20121, and the push rod abutting portion 2052 is subjected to the upward spring compression force of the second elastic member 204, and the push rod abutting portion 2052 abuts against the bushing 2012 (including direct abutment or indirect abutment, for example, when a washer 206 or other components are provided between the bushing 2012 and the push rod abutting portion 2052, the rod abutting portion 2052 abuts against the bushing 2012 indirectly). After the sleeve 2012 is fixedly connected to the valve shaft 2011, the first elastic member 208 is in a compressed state, and the second elastic member 204 is in a compressed state or is about to be compressed. For example, when the valve port 10a is in a fully closed state, the push rod 205 is supported on the upper end of the second elastic member 204, but the push rod abutment portion 2052 does not abut against the sleeve 2012 at this time, that is, there is a distance between the sleeve 2012 and the push rod abutment portion 2052 in the height direction of the electric valve. When the valve shaft assembly 201 moves upward a certain distance relative to the valve seat component 10, the push rod main body 2051 can contact the housing 30. This is the critical point at which the second elastic member 204 is compressed. If the valve shaft assembly 201 continues to move upward a certain distance relative to the valve seat component 10, the second elastic member 204 is compressed. This embodiment is illustrated by taking the second elastic member 204 as always being in a compressed state, that is, when the valve port 10a is in a fully closed state, the push rod 205 is supported on the upper end portion of the second elastic member 204, the lower end of the push rod abutting portion 2052 abuts against the second elastic member 204, and the upper end of the push rod abutting portion 2052 abuts against the bushing 2012, and the bushing 2012 is subjected to the elastic load of the second elastic member 204.

[0053] The valve core rotor assembly 20 provided in the present application includes a second abutment portion 20b, which can abut against the push rod abutment portion 2052. The valve core rotor assembly 20 provided in this embodiment also includes a first abutment portion 20a, which abuts against the first elastic member 208. In this embodiment, the bushing 2012 abuts against the push rod abutment portion 2052 and the first elastic member 208. Therefore, the bushing 2012 includes a first abutment portion 20a and a second abutment portion 20b.

[0054] In addition, the valve shaft assembly 201 provided in the present application also includes a channel portion 20c, and the electric valve provided in this embodiment also includes a limiting portion 20d. The channel portion 20c can allow the push rod body portion 2051 of the push rod 205 to pass through to the outside of the valve shaft assembly 201, so that the push rod body portion 2051 can be offset against the limiting portion 20d. In this embodiment, the push rod body portion 2051 can pass through the bushing hole portion 20121 and offset against the outer shell 30. Therefore, in this embodiment, the bushing hole portion 20121 includes the channel portion 20c, and the outer shell 30 includes the limiting portion 20d.

[0055] See Figure 4 , is a cross-sectional view of the valve body when the electric valve rotor 203 component of the present invention is about to reach the critical point of over-opening. Figure 4 The valve core rotor assembly 20 is in a state of being about to be over-opened (over-opening: refers to the state when the valve core rotor assembly 20 is opened upward and exceeds its specified upper limit stroke). Figure 1 The valve core rotor assembly 20 is in the fully closed position, and the valve core head 202a is at the position closest to the valve port 10a. Figure 4 The valve core head 202a is already in a position away from the valve port 10a. At this time, the external threaded portion 201a of the valve shaft 2011 still has a length (see the length marked as L in the figure) that is still in a threaded state with the internal threaded portion 10b of the nut 102. At this time, the main body of the push rod 2051 just contacts the top of the inner wall of the shell 30 (the limiting portion 20d).

[0056] See Figure 5 , is a cross-sectional view of the valve body when the valve core rotor assembly of the electric valve of the present invention is over-opened (the threaded pair is disengaged). Figure 5 The valve core rotor assembly 20 is relative to Figure 4 The position shown in the figure continues to move upwards to a stroke height of L. At this time, the movable thread 201a of the valve shaft 2011 and the fixed thread portion 10b of the nut 102 are just disengaged from each other, and the second elastic member 204 is relative to Figure 4The state in the middle is further compressed by an amount L, and the bottom surface of the bushing 2012 (the second abutting portion 20b) and the push rod abutting portion 2052 change from an abutting state to a non-abutting state, and the top end of the push rod main body 2051 of the push rod 205 presses against the inner wall (limiting portion 20d) of the housing 30. The downward elastic force of the second elastic member 204 is ultimately transmitted to the valve shaft assembly 201, that is, the valve shaft assembly 201 is subjected to the downward pressing force of the second elastic member 204. If the valve core rotor assembly 20 continues to rotate in the over-opening direction, the valve core rotor assembly 20 will no longer rise relative to the nut 102 because the thread pair has disengaged. When the valve core rotor assembly 20 is driven by the coil 40 to rotate downward in the valve closing direction, because the valve shaft 2011 is subjected to the downward spring pressing force of the second elastic member 204, the external thread 201a and the internal thread portion 10b will be re-engaged, causing the valve core rotor assembly 20 to rotate and move downward.

[0057] See Figure 6 , is a structural diagram of the valve core rotor assembly of the second embodiment of the present invention. Figure 3 The valve core rotor assembly 20 of the first embodiment shown is equivalent to a split design of the valve core 202 of the first embodiment. The valve core 202 of this embodiment includes a valve core body 2021 and a valve core sleeve 2022. The valve core sleeve 2022 includes a valve core sleeve hole 20221. The valve core sleeve hole 20221 extends through the upper and lower surfaces of the valve core sleeve 2022. The upper end of the valve core body 2021 passes through the valve core sleeve hole 20221. The valve core body 2021 and the valve core sleeve 2022 can be fixedly connected by press-fitting, welding, or bonding. Using the solution of this embodiment, the diameter of the head 202a of the valve core 202 can be set to be larger than the inner diameter of the second valve shaft inner wall 20153. When the diameter of the valve core head 202a is larger than the inner diameter of the second valve shaft inner wall 20153, the valve core 202 can be inserted into the central through hole of the valve shaft 2011 from bottom to top, and the valve core sleeve 2022 is then inserted and fixed to the valve core body 2021 from top to bottom. The valve core sleeve 2022 can abut against the valve shaft abutment portion 20152. The valve core sleeve 2022 includes a valve core abutment portion 202b, and the lower end surfaces of the first elastic member 208 and the second elastic member 204 both abut against the upper portion of the valve core sleeve 2022. The structural scheme of other parts of this embodiment is the same or similar to that of the first embodiment.

[0058] In addition, in this embodiment, the valve core main body 2021 passes through the valve core sleeve hole 20221 and is located in the second elastic member 204. When the lower end of the second elastic member 204 is about to undergo radial displacement, the part of the valve core main body 2021 passing through the valve core sleeve hole 20221 can limit the radial displacement of the second elastic member 204, and the second elastic member 204 is more stable when the electric valve is working.

[0059] Of course, the valve core sleeve hole portion 20221 can also be in the form of a blind hole, that is, the valve core main body 2021 is fixedly connected to the valve core sleeve 2022, but the valve core main body 2021 does not pass through the top of the valve core sleeve hole portion 20221, that is, the valve core sleeve 2022 hole portion is not limited to the form of a through hole, or the valve core sleeve hole portion 20221 is in the form of a through hole, but the valve core main body 2021 does not pass through the top of the valve core sleeve hole portion 20221.

[0060] See Figure 7 , is a structural diagram of the valve core rotor assembly of the third embodiment of the present invention. Figure 6 Compared to the second embodiment in the present invention, the main difference lies in the addition of a gasket 206 between the upper end of the valve core sleeve 26 and the lower ends of the first elastic member 208 and the second elastic member 204. This gasket 206 includes a gasket hole 2061 that extends through the upper and lower surfaces of the gasket 206. The addition of this gasket 206 reduces the frictional resistance caused by the relative rotational movement of the valve core 202 relative to the first elastic member 208 and the second elastic member 204, thereby improving the operational reliability and lifespan of the electric valve. In this embodiment, the lower ends of the first elastic member 208 and the second elastic member 204 both abut against the upper end of the gasket 206. The structural scheme of other parts of this embodiment is the same or similar to that of the second embodiment.

[0061] This embodiment emphasizes that the "offsetting" mentioned in this application includes both direct offsetting between two components and indirect offsetting between two components through other components.

[0062] See Figure 8 , is a structural diagram of the valve core rotor assembly of the fourth embodiment of the present invention. Figure 7 Compared to the third embodiment in FIG. 1 , the main difference lies in the lower end of the second elastic member 204 abutting against the valve core body 2021. This structural solution disperses the force applied to the first and second elastic members 208, 204, and also better constrains the circumferential positioning of the lower ends of the first and second elastic members 208, 204, thereby improving the reliability of the electric valve's structural design. The structural solution for other parts of this embodiment is the same or similar to that of the third embodiment.

[0063] See Figure 9 , is a structural diagram of the valve core rotor assembly of the fifth embodiment of the present invention. Figure 3 The main difference between the valve core rotor assembly 20 of the first embodiment shown is the slightly different structure of the bushing 2012. In this embodiment, the bushing 2012 covers the valve shaft inner wall portion 2015 of the valve shaft 2011, and the bushing 2012 is fixedly connected to the valve shaft 2011.

[0064] The bushing 2012 of this embodiment further includes an extension portion 20122 extending downwardly from its circumferential outer edge. In this embodiment, the bushing 2012 is generally shaped like a shell, and the extension portion 20122 of the bushing 2012 is securely mounted on the outer circumference of the valve shaft 2011. The structural scheme of other parts of this embodiment is the same or similar to that of the first embodiment. In this embodiment, the bushing 2012 is not located within the valve shaft inner wall portion 2015.

[0065] Therefore, the bushing 2012 may be partially located in the valve shaft inner wall portion 2015 , may be completely located in the valve shaft inner wall portion 2015 , or may not be located in the valve shaft inner wall portion 2015 .

[0066] See Figure 10 , is a structural diagram of the valve core rotor assembly of the sixth embodiment of the present invention. Figure 3 Compared to the first embodiment in the present invention, the main difference lies in the addition of a gasket 207 between the upper end of the valve core 202 and the lower ends of the first elastic member 208 and the second elastic member 204. The addition of this gasket 207 can reduce the frictional resistance of the valve core 202 during relative rotational movement with the first elastic member 208 and the second elastic member 204, thereby reducing the valve core 202 from rotating with the valve shaft assembly 201, thereby reducing the friction between the valve core head 202a and the valve port 10a, thereby reducing wear on the valve port 10a and the valve core head 202a, thereby improving the operational reliability and operational life of the electric valve. In this embodiment, the lower ends of the first elastic member 208 and the second elastic member 204 abut against the gasket 207, and the gasket 207 abuts against the valve core 202. The structural scheme of other parts of this embodiment can be the same or similar to that of the first embodiment.

[0067] See Figure 11, is a schematic structural diagram of a valve core rotor assembly according to a seventh embodiment of the present invention. In this embodiment, the valve shaft assembly 201 includes a valve shaft body 2013 and a cylindrical member 2014. The valve shaft body 2013 has a through hole extending vertically therethrough. The valve shaft body 2013 is provided with an external threaded portion 201a (also referred to as a movable threaded portion). The valve shaft body 2013 is fixedly connected to the cylindrical member 2014. The central through hole after the fixed connection forms a valve shaft inner wall portion 2015. In this embodiment, a portion of the valve shaft body 2013 is located within the through hole of the cylindrical member 2014. Of course, the valve shaft body 2013 may also be fixed to the lower end of the cylindrical member 2014 without entering the through hole of the cylindrical member 2014. The cylindrical member 2014 is generally in the shape of a hollow cylinder. A cylindrical member abutting portion 20141 is provided approximately above the cylindrical member 2014. A cylindrical member through hole 201411 is provided approximately at the midline position of the cylindrical member abutting portion 20141. In the plane where the cross section of the valve shaft assembly 201 is located, the cylindrical member through hole 201411 is located outside the orthographic projection of the ejector main body 2051 along the plane, and is located at the ejector abutting portion 2052 along the plane. In the orthographic projection of the surface, in this embodiment, the cross-sections of the cylindrical through hole 201411, the outer edge of the push rod main body 2051 and the outer edge of the push rod abutting portion 2052 are all circular. Therefore, the diameter of the cylindrical through hole 201411 is larger than the diameter of the push rod main body 2051 and smaller than the diameter of the push rod abutting portion 2052. Therefore, the valve core abutting portion 202b can abut against the upper end face of the valve shaft main body 2013. At this time, the upper end face of the valve shaft main body 2013 The end surface forms a valve shaft abutment portion 20152, the inner hole wall of the valve shaft assembly 201 located on the valve shaft abutment portion 20152 forms a first valve shaft inner wall portion 20151, and the inner hole wall located below the valve shaft abutment portion 20152 forms a second valve shaft inner wall portion 20153. The valve core abutment portion 202b and the first elastic member 208 and the second elastic member 204 are accommodated in the space defined by the cylindrical member 2014 and the valve shaft main body 2013. The cylindrical member abutment portion 201 41 abuts against the first elastic member 208, so in this embodiment, the cylindrical member abutting portion 20141 includes a first abutting portion 20a, the cylindrical member abutting portion 20141 abuts against the top rod abutting portion 2052, so the cylindrical member abutting portion 20141 includes a second abutting portion 20b, and the top rod main body portion 2051 can pass through the cylindrical member through-hole portion 201411 and abut against the limiting portion 20d, so the cylindrical member through-hole portion 201411 includes a channel portion 20c.

[0068] The cylindrical member 2014 may be formed in one piece, or may be formed by fixedly connecting two or more parts.

[0069] This embodiment and Figure 3Compared with the first embodiment in the embodiment, the structure of the valve shaft assembly 201 is re-divided and integrated based on the first embodiment, and the functions of the geometrically corresponding parts after assembly are the same. The structural scheme of other parts of this embodiment is the same or similar to that of the first embodiment.

[0070] See Figure 12 , is a structural diagram of the valve core rotor assembly of the eighth embodiment of the present invention.

[0071] This embodiment and Figure 3 Compared with the first embodiment in the embodiment, the main difference is that an upper washer 209 is additionally provided below the bushing 2012, and the upper washer is provided with an upper washer hole portion 2091, and the upper washer hole portion 2091 passes through the upper and lower surfaces of the upper washer 209, the upper end of the upper washer 209 is abutted against the bushing 2012, and the lower end surface of the upper washer 209 is abutted against the first elastic member 208, so the upper washer 209 includes a first abutting portion 20a, and in addition, the main body portion 2051 of the push rod passes through the bushing hole portion 20121, and at this time the bushing hole portion 20121 includes a channel portion 20c, and the upper washer 209 can abut against the push rod abutting portion 2052, and at this time the upper washer 209 includes a second abutting portion 20b.

[0072] This embodiment and Figure 3 Compared with the first embodiment in the embodiment, the main difference is that an upper washer 209 is additionally provided below the bushing 2012, and the upper washer is provided with an upper washer hole portion 2091, and the upper washer hole portion 2091 passes through the upper and lower surfaces of the upper washer 209, the upper end of the upper washer 209 is abutted against the bushing 2012, and the lower end surface of the upper washer 209 is abutted against the first elastic member 208, so the upper washer 209 includes a first abutting portion 20a, and in addition, the main body portion 2051 of the push rod passes through the bushing hole portion 20121, and at this time the bushing hole portion 20121 includes a channel portion 20c, and the upper washer 209 can abut against the push rod abutting portion 2052, and at this time the upper washer 209 includes a second abutting portion 20b.

[0073] Of course, please refer to Figure 13 The upper washer portion 209 may also be in contact with the second elastic member 204 instead of the first elastic member 208. In this case, the bushing 2012 includes the first contact portion 20a, and the upper washer 209 includes the second contact portion 20b. The above merely represents different mating relationships formed by adding upper washers 209 of different structures to the valve shaft assembly 201, and the overall concept does not depart from the scope of this patent. The offset described in this application includes direct offset and indirect offset.

[0074] Of course, it can be understood that the upper gasket 209 can also be applied to the structure of the electric valve in the seventh embodiment.

[0075] This embodiment is intended to illustrate that some components of the electric valve can be subjected to conventional separation, integration and other changes, but the functions of their geometrically corresponding parts after assembly are basically the same, which still falls within the concept of the present invention.

[0076] In the above embodiment, the push rod 205 is configured to abut against the housing 30. In this case, the housing 30 includes a limiting portion 20d. Alternatively, a housing connector may be welded to the housing 30, allowing the push rod 205 to abut against the housing connector. In this case, the limiting portion 20d is the component abutting against the push rod 205. In other words, the limiting portion 20d of the present application is a component that can abut against the push rod 205, and is not necessarily limited to the housing 30.

[0077] In addition, it should be noted that Figure 7 (Third embodiment), Figure 8 (Fourth embodiment), Figure 10 In the embodiment shown in the sixth embodiment, a washer or gasket is additionally provided on the lower end surface of the first elastic member 208 (the central through hole of the washer or gasket may be a closed hole or an open hole). Furthermore, to further reduce the frictional resistance of relative rotation, a lubricating and wear-resistant coating (e.g., a coating containing polytetrafluoroethylene, graphite, or molybdenum disulfide) may be sprayed or plated on the upper and lower surfaces of the washer or gasket, which are subject to rotational friction, thereby extending the service life of the electric valve.

[0078] Based on the above embodiments, by utilizing the core structure of the present invention, some adaptive changes in adding friction-reducing washers or gaskets should fall within the scope of protection of the patent claims of the present invention.

[0079] It is worth noting that, regarding the above-mentioned method of forming the valve port and whether to set up a connecting pipe, this solution provides multiple options, and the word "can" is marked in the specification. Therefore, it can be understood that the "can" mentioned in this application cannot be understood as "must".

[0080] In addition, based on the above embodiments, the valve core, valve shaft and bushing are assembled in a split manner, or mechanically divided at different positions, without substantially changing the functions of their geometrically corresponding parts. These adaptively changed and combined structures should also fall within the scope of protection of the patent claims of this invention.

[0081] It should be noted that the directional nouns such as up, down, left, and right mentioned in this embodiment are all based on the drawings in the specification and are introduced for the convenience of description; and the ordinal numbers such as "first" and "second" in the component names are also introduced for the convenience of description and do not mean any limitation on any order of the components.

[0082] The above describes the electric valve provided by the present invention in detail. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above examples is only intended to help understand the core concept of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. An electric valve, characterized in that: The valve body comprises a valve body and a coil (40), wherein the coil (40) is sleeved on the valve body, the valve body comprises a valve seat component (10) and a valve core rotor assembly (20), and the valve core rotor assembly (20) comprises a valve shaft assembly (201), a valve core (202), a first elastic member (208), a second elastic member (204), and a push rod (205); The valve shaft assembly (201) comprises a valve shaft abutment portion (20152); The valve core (202) is provided through the valve shaft assembly (201), and the valve core (202) comprises a valve core abutting portion (202b), and the valve core abutting portion (202b) is capable of abutting against the valve shaft abutting portion (20152); The push rod (205) comprises a push rod body portion (2051) and a push rod abutting portion (2052), the push rod abutting portion (2052) is supported on the upper end portion of the second elastic member (204), and the second elastic member (204) is supported on the valve core (202); The first elastic member (208) is sheathed on the second elastic member (204); the valve core rotor assembly (20) further comprises a first abutting portion (20a); the upper end portion of the first elastic member (208) abuts against the first abutting portion (20a); and the lower end portion of the first elastic member (208) abuts against the valve core (202); the valve shaft assembly (201) further comprises a channel portion (20c); the push rod body portion (2051) extends through the channel portion (20c); The valve body also includes a limiting portion (20d), the valve seat component (10) includes an internal threaded portion (10b), and the valve shaft assembly (201) includes an external threaded portion (201a). When the internal threaded portion (10b) and the external threaded portion (201a) are in a non-threaded state, the push rod body (2051) abuts against the limiting portion (20d), the upper end of the second elastic member (204) abuts against the push rod abutting portion (2052), the upper end of the second elastic member (204) abuts against the valve core (202), and the valve core abutting portion (202b) abuts against the valve shaft abutting portion (20152).

2. The electric valve according to claim 1, characterized in that The valve core rotor assembly (20) further includes a second abutting portion (20b), and the second abutting portion (20b) is capable of abutting against the push rod abutting portion (2052).

3. The electric valve according to claim 1, characterized in that The valve shaft assembly (201) comprises a valve shaft (2011) and a bushing (2012), wherein the bushing (2012) is fixedly connected to the valve shaft (2011), the bushing (2012) comprises a bushing hole portion (20121), the push rod body portion (2051) passes through the bushing hole portion (20121), and the bushing hole portion (20121) comprises the channel portion (20c).

4. The electric valve according to claim 3, characterized in that The push rod abutting portion (2052) can abut against the bushing (2012), and the bushing (2012) includes a second abutting portion (20b); the first elastic member (208) abuts against the bushing (2012), and the bushing (2012) includes the first abutting portion (20a).

5. The electric valve according to claim 3, characterized in that: The invention also includes an upper washer (209), the upper washer (209) includes an upper washer hole portion (2091), the push rod body portion (2051) passes through the upper washer hole portion (2091), the upper washer (209) abuts against the bushing (2012), the upper washer (209) abuts against the first elastic member (208), the upper washer (209) includes the first abutting portion (20a), the bushing (2012) abuts against the push rod abutting portion (2052), and the bushing (2012) includes a second abutting portion (20b).

6. The electric valve according to claim 3, characterized in that It also includes an upper washer (209), the upper washer (209) includes an upper washer hole portion (2091), the push rod body portion (2051) passes through the upper washer hole portion (2091), the upper washer (209) can abut against the bushing (2012), the bushing (2012) abuts against the first elastic member (208), the bushing (2012) includes the first abutting portion (20a), the upper washer (209) abuts against the push rod abutting portion (2052), and the upper washer (209) includes a second abutting portion (20b).

7. The electric valve according to claim 1, characterized in that The valve shaft assembly (201) comprises a valve shaft main body (2013) and a cylindrical member (2014), wherein the valve shaft main body (2013) and the cylindrical member (2014) are fixedly connected, and the valve shaft main body (2013) comprises the external threaded portion (201a); The cylindrical member (2014) includes a cylindrical member abutment portion (20b), the cylindrical member abutment portion (20b) includes a cylindrical member through hole (201411), the push rod body portion (2051) passes through the cylindrical member through hole (201411), and the cylindrical member through hole (201411) includes the channel portion (20c).

8. The electric valve according to claim 7, characterized in that The cylindrical member abutting portion (20b) abuts against the first elastic member (208), the cylindrical member abutting portion (20b) includes the first abutting portion (20a), the cylindrical member abutting portion (20b) can abut against the push rod abutting portion (2052), and the cylindrical member abutting portion (20b) includes a second abutting portion (20b).

9. The electric valve according to claim 7, characterized in that The upper washer (209) further includes an upper washer hole portion (2091), the push rod body portion (2051) passes through the upper washer hole portion (2091), the upper washer (209) abuts against the cylindrical member abutting portion (20b), the upper washer (209) abuts against the first elastic member (208), the upper washer (209) includes the first abutting portion (20a), the cylindrical member abutting portion (20b) can abut against the push rod abutting portion (2052), and the cylindrical member abutting portion (20b) includes a second abutting portion (20b).

10. The electric valve according to claim 7, characterized in that It also includes an upper washer (209), the upper washer (209) includes an upper washer hole portion (2091), the push rod body portion (2051) passes through the upper washer hole portion (2091), the upper washer (209) can abut against the cylindrical member abutment portion (20b), the cylindrical member abutment portion (20b) abuts against the first elastic member (208), the cylindrical member abutment portion (20b) includes the first abutment portion (20a), the upper washer (209) can abut against the push rod abutment portion (2052), and the upper washer includes the abutment portion.

11. The electric valve according to any one of claims 1 to 10, characterized in that: It also includes a gasket (206), wherein the gasket (206) abuts against the first elastic member (208), and the gasket (206) abuts against the valve core (202).

12. The electric valve according to claim 11, characterized in that The gasket (206) includes a gasket hole portion (2061), an end of the valve core (202) relatively close to the push rod (205) passes through the gasket hole portion (2061), and a portion of the valve core (202) is located within the second elastic member (204).

13. The electric valve according to claim 12, characterized in that: The second elastic member (204) abuts against the washer (206).

14. The electric valve according to claim 12, characterized in that The second elastic member (204) abuts against the valve core (202).

15. The electric valve according to any one of claims 1 to 10, characterized in that: The valve core (202) comprises a valve core main body (2021) and a valve core sleeve (2022); the valve core sleeve (2022) comprises a valve core sleeve hole (20221); a portion of the valve core main body (2021) is located in the valve core sleeve hole (20221); and the valve core main body (2021) is fixedly connected to the valve core sleeve (2022); The first elastic member (208) abuts against the valve core sleeve (2022), the valve core sleeve (2022) can abut against the valve shaft abutment portion (20152), and the valve core sleeve (2022) includes the valve core abutment portion (202b).

16. The electric valve according to claim 15, characterized in that The valve core sleeve hole portion (20221) is a through hole, the valve core main body portion (2021) passes through the valve core sleeve hole portion (20221), and a portion of the valve core main body portion (2021) is located within the second elastic member (204).

17. The electric valve according to any one of claims 1 to 10, characterized in that: It also includes a housing (30), the housing (30) being fixedly connected to the valve seat component (10), and the housing (30) including the limiting portion (20d).

18. The electric valve according to any one of claims 1 to 10, characterized in that: It also includes a housing (30) and a housing connector, wherein the housing connector is fixedly connected to the housing (30), and the housing connector includes the limiting portion (20d).

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