Valve device

Abstract

The valve device comprises a guide part and a sliding part, the guide part is arranged in the radial direction of the valve device, the guide part is located on one of a rotor assembly and a supporting piece, one end of the sliding part is in sliding connection with the guide part, and the other end of the sliding part is in limiting connection or fixed connection with the other one of the rotor assembly and the supporting piece. Compared with the prior art, the layout and the structural design are simpler in structure.

Description

Technical Field

[0001] The present application relates to the field of fluid control technology, and in particular to a valve device. Background Art

[0002] A known valve device includes a stop structure. For example, in the invention patent with authorization announcement number CN104913098B, the stop structure includes a nut, a limit spring, and a stop ring. The limit spring is sleeved on the nut. The limit spring has a spiral guide portion, an upper sliding portion, and a positioning portion. The stop ring is located on the spiral guide portion. The stop ring slides along the spiral guide portion between the upper sliding portion and the positioning portion. The limit spring is sleeved on the nut, which makes the product structure complex. Summary of the invention

[0003] The purpose of the present application is to provide a valve device with a relatively simple structure.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical solutions: a valve device, comprising a rotor assembly, a support member, a sleeve and a valve seat, the support member is located in the sleeve, the support member is fixedly connected or limit-connected to the sleeve, the valve seat is fixedly connected to the sleeve, along the axial direction of the valve device, at least part of the support member is located on one side of the rotor assembly, and at least part of the valve seat is located on the other opposite side of the rotor assembly; the valve device comprises a guide portion and a sliding portion, the guide portion comprises a first limit portion and a second limit portion, the guide portion is arranged along the radial direction of the valve device, the guide portion is located at one of the rotor assembly and the support member, one end of the sliding portion is slidably connected to the guide portion, and the other end of the sliding portion is limit-connected or fixedly connected to the other one of the rotor assembly and the support member; when the sliding portion abuts against one of the first limit portion and the second limit portion, the rotor assembly stops rotating.

[0005] In an embodiment provided in the present application, the valve device includes a guide portion and a sliding portion. The guide portion is arranged along the radial direction of the valve device, and the guide portion is located at one of the rotor assembly and the support member. One end of the sliding portion is slidably connected to the guide portion, and the other end of the sliding portion is limitedly connected or fixedly connected to the other one of the rotor assembly and the support member. Such a layout and structural design are simpler in structure than the related technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 is a schematic diagram of a specific embodiment of the valve device;

[0007] Figure 2 is a schematic diagram of valve components;

[0008] Figure 3 is a schematic diagram of a support member of a valve device;

[0009] Figure 4 is a schematic diagram of a rotor assembly of a valve device;

[0010] Figure 5 is a schematic structural diagram of a sliding portion of a valve device;

[0011] Figure 6 is a schematic diagram of the structure of the valve seat of the valve device;

[0012] Figure 7 for Figure 3 A schematic diagram of a support member of the valve device from another perspective;

[0013] Figure 8 is a schematic diagram of the operating position of the sliding portion of the valve device;

[0014] Fig. 9 It is a schematic diagram of the structure of the screw rod and valve core assembly of the valve device;

[0015] Fig.10 Another structural schematic diagram of the screw rod and valve core assembly of the valve device;

[0016] Fig.11 It is a structural schematic diagram of the valve body;

[0017] Fig.12 The valve device is in the fully closed state.

[0018] Fig.13 This is the fully open state of the valve device.

[0019] The reference numerals in the figures are described as follows:

[0020] 10. stator component; 11. coil assembly; 12. injection molding part; 13. first accommodating cavity;

[0021] 20. Valve component; 21. Valve seat; 211. Positioning groove; 212. Valve port; 22. Rotor assembly; 221. Magnet; 222. Nut seat; 223. Positioning protrusion; 224. Positioning hole; 225. Second mounting hole; 226. Slot cavity; 23. Valve core assembly; 231. Valve needle; 2311. First matching portion; 232. Elastic element; 24. Screw rod; 241. Second accommodating cavity; 242. Second matching portion; 25. Sleeve; 251. First opening portion; 252. First wall portion;

[0022] 30. Support member; 31. Flange portion; 311. First side wall portion; 312. Second side wall portion; 32. First mounting hole;

[0023] 321, first hole section; 3221, first wall; 3222, second wall; 322, second hole section;

[0024] 40. Stop assembly; 41. Guide portion; 411. Guide groove; 4111. First limiting portion; 4112. Second limiting portion; 42. Sliding portion; 421. First connecting portion; 422. Second connecting portion; 423. Third connecting portion;

[0025] 50. first sealing ring; 51. second sealing ring;

[0026] 60. Valve body; 61. Installation cavity; 62. First flow channel; 63. Second flow channel. DETAILED DESCRIPTION

[0027] The present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The same parts are represented by the same figure numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the accompanying drawings, and the words "bottom surface" and "top surface", "inside" and "outside" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0028] It should be understood that although the first, second, third, fourth, etc. may be used to describe various information in this application, these information should not be limited to these descriptions. These terms are only used to distinguish the same type of information from each other. Multiple means two or more. In the absence of conflict, the various embodiments in this application can complement each other.

[0029] The valve device can be applied to a vehicle thermal management system or an air conditioning system. In the vehicle thermal management system, the valve device is often used as a throttling element or a switching element. Figure 1-Figure 13 , an embodiment of a valve device, the valve device includes a valve component 20 and a stator component 10, the stator component 10 is located at the periphery of at least part of the valve component 20, the stator component 10 is fixedly or positionally connected to the valve component 20, and further, a sealing arrangement can be provided between the stator component 10 and the valve component 20, which is beneficial to prevent water vapor or other impurities in the external environment from entering through the assembly gap between the stator component 10 and the valve component 20, causing corrosion or failure inside the stator component 10. The stator component 10 includes a coil assembly 11 and an injection molding part 12, the injection molding part 12 covers at least part of the coil assembly 11, that is, the stator component 10 is injection molded with at least the coil assembly 11 as an insert, the stator component 10 has a first accommodating cavity 13 with an opening at the lower end, and the valve device is electrically connected and / or signal connected to the outside world through the stator component 10.

[0030] Combination Figure 1-2The valve component 20 includes a valve seat 21, a rotor assembly 22, a valve core assembly 23, a screw rod 24 and a sleeve 25. At least part of the sleeve 25 is located in the first accommodating chamber 13. The lower end of the sleeve 25 has a first opening 251, and the first opening 251 is fixedly connected to the valve seat 21. The coil assembly 11 is located outside the sleeve 25, and at least part of the rotor assembly 22 is located inside the sleeve 25. The rotor assembly 22 is in driving connection with the screw rod 24. Specifically, the rotor assembly 22 is threadedly connected with the screw rod 24, and the other end of the screw rod 24 is limitedly connected with the valve core assembly 23. When a predetermined current is passed through the coil assembly 11, an excitation magnetic field can be generated to drive the rotor assembly 22 to rotate. The rotor assembly 22 is threadedly connected with the screw rod 24, and the screw rod 24 moves along the axial direction of the valve device. The screw rod 24 is limitedly connected with the valve core assembly 23, that is, the screw rod 24 drives the valve core assembly 23 to move along the axial direction of the valve device, and converts the rotation of the rotor assembly 22 into the axial movement of the valve core assembly 23 relative to the valve seat 21. The valve member 20 also has a valve port 212, which is located at the valve seat 21. The valve core assembly 23 can open or close the valve port 212, or adjust the flow area of ​​the valve port 212 to adjust the flow rate through the valve port 212. In the related art, the valve seat is composed of at least two parts, namely, a valve seat portion and a valve seat port portion, and the valve seat portion and the valve seat port portion are fixedly connected or limitedly connected. In this embodiment, as shown in FIG. Figure 6 As shown, the valve seat 21 is an integrated structure, which has a simple structure, is easy to process, and has a relatively reduced manufacturing cost compared to the related art.

[0031] The valve device includes a support member 30, and the support member 30 is located in the sleeve 25. The support member 30 is fixedly connected or limitedly connected to the sleeve 25, and the valve seat 21 is fixedly connected to the sleeve 25. Along the axial direction of the valve device, at least part of the support member 30 is located on one side of the rotor assembly 22, and at least part of the valve seat 21 is located on the other side of the rotor assembly 22. Specifically, the support member 30 and the sleeve 25 can be fixedly connected by bonding, welding, interference fit, etc., or can be limitedly matched by snap-on, plug-in, etc. The upper end portion of the support member 30 abuts against the first wall portion 252 of the sleeve 25. It should be noted that the first wall portion 252 of the sleeve 25 is the wall portion opposite to the first opening portion 251 of the sleeve 25. As shown in FIG. Figure 2-4As shown, the rotor assembly 22 includes a magnet 221 and a nut seat 222. The magnet 221 and the nut seat 222 are fixedly connected or limit-connected or are an integral structure. For example, the nut seat 222 is made of plastic material, and the nut seat 222 covers the magnet 221, that is, the rotor assembly 22 is injection molded with the magnet 221 as an insert. At least part of the rotor assembly 22 is located between the support member 30 and the valve seat 21, and the support member 30 and the valve seat 21 limit the axial displacement of the rotor assembly 22. In this embodiment, the nut seat 222 includes a groove cavity 226. Along the axial direction of the valve device, the groove cavity 226 has an opening, and the opening faces the support member 30. At least part of the support member 30 is located in the groove cavity 226. The support member 30 has a flange portion 31, and the flange portion 31 includes a first side wall portion 311 and a second side wall portion 312. The first side wall portion 311 of the flange portion 31 is interference fit with the inner wall portion of the sleeve 25, and the second side wall portion 312 of the flange portion 31 is matched with at least part of the upper end portion of the rotor assembly 22, thereby limiting the axial movement of the rotor assembly 22. The valve seat 21 has a positioning groove 211, which is located at the upper end of the valve seat 21, that is, the positioning groove 211 is located at one end of the valve seat 21 close to the support member 30, and the rotor assembly 22 has a positioning protrusion 223, at least part of which is located in the positioning groove 211, and the lower end surface of the positioning protrusion 223 abuts against the bottom wall of the positioning groove 211, thereby limiting the axial displacement of the rotor assembly 22. Of course, in some other embodiments, the rotor assembly 22 has a positioning groove, and the valve seat 21 has a positioning protrusion, at least part of which is located in the positioning groove. In this embodiment, upper and lower limit methods are used to limit the axial movement of the rotor assembly 22. Of course, in some embodiments, the rotor assembly 22 can be axially limited by bearings. The bearings are located between the support member 30 and the rotor assembly 22, or the bearings are located between the rotor assembly 22 and the valve seat 21. As long as the rotor assembly 22 can only rotate without axial movement, the axial movement of the rotor assembly 22 is not absolutely limited. Within the tolerance range, the rotor assembly 22 can move up and down in a small range.

[0032] The support member 30 has a first mounting hole 32, which passes through the upper and lower ends of the support member 30 along the axial direction of the valve device. The rotor assembly 22 has a second mounting hole 225, which passes through the upper and lower ends of the rotor assembly 22 along the axial direction of the valve device. The first mounting hole 32 and the second mounting hole 225 are coaxially or substantially coaxially arranged, and at least part of the screw rod 24 is located in the first mounting hole 32 and the second mounting hole 225. The rotor assembly 22 has an internal thread, which is located at the wall portion forming the second mounting hole 225. The outer wall of the screw rod 24 is provided with an external thread. The internal thread of the rotor assembly 22 cooperates with the external thread of the screw rod 24, so that the rotational motion of the rotor assembly 22 is converted into the axial movement of the screw rod 24. In the present application, the thread is arranged on the nut seat, that is, the nut seat is part of the rotor assembly. In the related art, the nut seat is relatively fixed to the valve seat or the nut seat is fixed to the valve body. The rotor assembly includes a connecting piece (carrying part of the function of the nut seat in the present application) and a magnet. The rotor assembly and the screw rod are relatively fixed and rotate and move. Compared with the related art, the present application omits the connecting piece, the number of parts is relatively small, and the structure is simpler.

[0033] In the present application, in order to prevent the screw from rotating during the axial movement, at least part of the first mounting hole 32 has a non-circular cross section perpendicular to the axial direction of the valve component 20, such as Figure 3 , Figure 7As shown, the first mounting hole 32 of the support member 30 includes a first hole section 321 and a second hole section 322. Along the axial direction of the valve component 20, the second hole section 322 is close to the second mounting hole 225 relative to the first hole section 321, and the aperture of the second hole section 322 is greater than or equal to the aperture of the first hole section 321, that is, a plane perpendicular to the axial direction of the valve component 20 is defined as a first plane. Along the axial direction of the valve component 20, the projection of the wall forming the first hole section 321 on the first plane is located on the inner side of the projection of the wall forming the second hole section 322 on the first plane, and the projection of the wall forming the first hole section 321 on the first plane is non-circular. Specifically, the wall forming the first hole section 321 includes a first wall 3221, the first wall 3221 is a plane wall, and the rest of the walls forming the first hole section 321 are arcuate walls; the wall forming the first hole section 321 also includes a second wall 3222, the first wall 3221 is parallel or approximately parallel to the second wall 3222, and the rest of the walls forming the second hole section 322 are arcuate walls. The screw rod 24 includes a first section and a second section, wherein the first section of the screw rod 24 is located in the first hole section 321, and the projection of the first section of the screw rod 24 on the first plane is the same as or similar to the projection of the wall forming the first hole section 321 on the first surface, and the first hole section 321 of the support member 30 cooperates with the first section of the screw rod 24 to limit the rotation of the screw rod 24 along the axial direction of the valve member 20. Through the limiting cooperation of the non-circular cross section, the structure is simple and the processing is convenient. Of course, in some other embodiments, the first limiting portion and the second limiting portion can be a limiting relationship between a protrusion and a limiting groove, the limiting protrusion is located on the outer wall of the screw rod 24, and the limiting groove is located on the wall portion of the first mounting hole 32 formed on the support member 30; or the limiting protrusion is located on the wall portion of the first mounting hole 32 formed on the support member 30, and the limiting groove is located on the outer wall of the screw rod 24, and the limiting protrusion and the limiting groove cooperate to limit the rotation of the screw rod 24 along the axial direction. In the present application, the limiting structure is arranged on the support member, and there is no need to set up a part to prevent the screw rod from rotating, which is conducive to the simple structure and miniaturization of the valve device.

[0034] The valve device further comprises a guide portion 41 and a sliding portion 42. The guide portion 41 comprises a first limiting portion 4111 and a second limiting portion 4112. The guide portion 41 is arranged along the radial direction of the valve device. The guide portion 41 is located at one of the rotor assembly 22 and the support member 30. One end of the sliding portion 42 is slidably connected to the guide portion 41, and the other end of the sliding portion 42 is limitedly connected or fixedly connected to the other of the rotor assembly 22 and the support member 30. When the sliding portion 42 abuts against one of the first limiting portion 4111 and the second limiting portion 4112, the rotor assembly 22 stops rotating. In this embodiment, the guide portion 41 is located at the rotor assembly 22. Specifically, as Figure 3 , Figure 7As shown, the guide portion 41 is located at the lower end of the support member 30, the guide portion 41 and the support member 30 are an integral structure, or the guide portion 41 and the support member 30 are a split structure, the guide portion 41 is fixedly connected to the support member 30, the guide portion 41 includes a guide groove 411, the guide groove 411 has an opening, the guide groove 411 is recessed from the lower end of the support member 30 along the axial direction of the valve device toward the upper end of the support member 30, the guide groove 411 has a first limiting portion 4111 and a second limiting portion 4112, along the radial direction of the valve component 20, the first limiting portion 4111 is close to the axis of the valve device relative to the second limiting portion 4112, and the guide groove 411 extends from the first limiting portion 4111 to the second limiting portion 4112 in a spiral shape. One end of the sliding portion 42 is located in the guide groove 411, and the other end of the sliding portion 42 is limitedly connected to the rotor assembly 22. The rotor assembly 22 has a limiting hole 224. The limiting hole 224 can be a blind hole or a through hole. Along the axial direction of the valve component 20, the opening of the limiting hole 224 faces the guide portion 41, and at least part of the sliding portion 42 is located in the limiting hole 224. The sliding portion 42 includes a first connecting portion 421, a second connecting portion 422 and a third connecting portion 423. The second connecting portion 422 is located between the first connecting portion 421 and the second connecting portion 422. At least part of the first connecting portion 421 is located in the guide groove 411, and at least part of the third connecting portion 423 is located in the limiting hole 224, that is, the first connecting portion 421 is bent relative to the second connecting portion 422 toward the direction of the guide portion 41, and the third connecting portion 423 is bent relative to the second connecting portion 422 toward the direction of the limiting hole 224. It can be understood that the bending direction of the first connecting portion 421 is opposite to the bending direction of the third connecting portion 423. It should be noted that when the sliding part 42 is limitedly connected to the support member 30, the sliding part 42 is made of non-elastic material or elastic material, and at least the third connecting part 423 is located in the limiting hole 224 of the support member 30, that is, the limiting hole 224 limits the radial displacement of the third connecting part 423, and the third connecting part 423 can rotate in the limiting hole 224; when the sliding part is fixedly connected to the support member 30, that is, at least the third connecting part 423 is fixed to the support member 30 by interference fit, welding, bonding, etc., at this time, the sliding part 42 is made of elastic material, and the sliding part 42 slides along the guide part by deformation. .When the valve device is working, one of the first limit portion 4111 and the second limit portion 4112 of the guide groove 411 is the starting position of the sliding portion 42. For the convenience of explanation, it is defined that when the valve component 20 is closed, the sliding portion 42 is located at the first limit portion 4111 of the guide groove 411. When the valve device receives a signal, a predetermined current is passed into the coil assembly 11 to generate an excitation magnetic field, driving the rotor assembly 22 to rotate. The sliding portion 42 rotates with the rotor assembly 22 driven by the rotor assembly 22. The support member 30 and the sleeve 25 have an interference fit, and the guide portion 41 is relatively stationary. The first connecting portion 421 of the sliding portion 42 slides along the guide portion 41. When the first connecting portion 421 of the sliding portion 42 slides to the second limit portion 4112, the sliding portion 42 stops moving, which will limit the continued movement of the rotor assembly 22. The position states of the sliding portion 42 at the first limit portion 4111 and the second limit portion 4112 are as shown. Figure 8 In the related art, the guide portion 41 is spiral, and the guide portion 41 is sleeved on the screw rod 24 and arranged along the axial direction of the valve component 20. The stop assembly 40 includes a spiral guide portion 41, a slip ring and a push rod. In the present application, the structure of the stop assembly 40 is relatively simple, and the guide portion 41 is arranged along the radial direction of the valve component 20, which reduces the volume of the valve component 20 to a certain extent.

[0035] In some other embodiments, the guide portion 41 is located on the rotor assembly 22, and the limiting hole 224 is located on the support member 30; the guide portion 41 and the rotor assembly 22 are an integral structure, that is, the guide portion 41 is located at the upper end of the rotor assembly; or, the guide portion 41 and the rotor assembly 22 are separate structures, and the guide portion 41 is fixedly connected to the rotor assembly 22. Since the structures of the guide portion 41 and the limiting hole 224 are the same or similar to those described above, they are not described in detail.

[0036] In the present application, the screw rod 24 is limitedly connected with the valve core assembly 23, and the screw rod 24 drives the valve core assembly 23 to move axially along the valve component 20. The valve core assembly 23 includes a valve needle 231 and an elastic element 232; Fig. 9As shown, the screw rod 24 has a second accommodating cavity 241, and the second accommodating cavity 241 has an opening in the direction toward the valve needle 231. The elastic element 232 is located in the second accommodating cavity 241, and at least part of the valve needle 231 is located in the second accommodating cavity 241. One end of the elastic element 232 abuts against the top end of the valve needle 231. In the present application, the screw rod 24 and the valve needle 231 are clamped by riveting. Specifically, the valve needle 231 has a first matching portion 2311, and the first matching portion 2311 is located at one end of the valve needle 231 close to the elastic element 232. The screw rod 24 has a second matching portion 242. Along the axis of the valve component 20, the second matching portion 242 is relatively far away from the elastic element 232 relative to the first matching portion 2311, that is, the lower end surface of the first matching portion 2311 abuts against the upper end surface of the second matching portion 242, and the side wall portion of the first matching portion 2311 and the side wall portion of the second matching portion 242 are gap-matched. During the assembly process, the elastic element 232 is installed into the accommodating cavity of the screw rod 24, and then the opening of the screw rod 24 is bent inward by riveting to abut against the first matching portion 2311 of the valve needle 231. The elastic element 232 of the present application is a spring. When the valve device is working, the elastic element 232 is in a compressed state in the accommodating cavity. The main function of the elastic element 232 is to provide pressure to the valve needle 231 when closing the valve, so as to prompt the valve needle 231 to close the valve quickly. Specifically, when the valve device is opening the valve, the first matching portion 2311 and the second matching portion 242 are in contact with each other, and the screw rod 24 drives the valve needle 231 to move upward. When the valve device is closing the valve, the screw rod 24 moves downward along the axial direction of the valve component 20, and the compressed spring releases the elastic force, so as to prompt the valve needle 231 to close the valve quickly. Of course, in some other embodiments, such as Fig.10 As shown, the valve needle 231 has a receiving cavity, the opening of the receiving cavity faces the screw rod 24, and the elastic element 232 is located in the receiving cavity. The assembly method is the same as the above method and will not be described in detail.

[0037] Combination Figure 11-13 The present invention also provides an embodiment of an electric valve, the electric valve includes the aforementioned valve device. The electric valve includes a valve body 60, the valve body 60 has an installation cavity 61, part of the valve device is located in the installation cavity 61, the valve body 60 includes a first flow channel 62 and a second flow channel 63, the first flow channel 62 and the second flow channel 63 are connected through the valve device, the valve device cooperates with the valve core assembly 23 and the valve port 212 to adjust the flow rate of the working medium between the first flow channel 62 and the second flow channel 63, and the working medium includes a refrigerant. In this embodiment, a first sealing ring 50 and a second sealing ring 51 are provided between the side wall forming the installation cavity 61 and the valve seat 21, and the first sealing ring 50 and the second sealing ring 51 are respectively placed on both sides of the valve port 212 to prevent leakage of the medium.

[0038] It should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail in this specification with reference to the above embodiments, it should be understood by those skilled in the art that the present invention can still be modified or replaced by equivalents, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A valve device, characterized in that: The valve device comprises a rotor assembly (22), a support member (30), a sleeve (25) and a valve seat (21), wherein the support member (30) is located in the sleeve (25), the support member (30) is fixedly connected or position-limitedly connected to the sleeve (25), the valve seat (21) is fixedly connected to the sleeve (25), and along the axial direction of the valve device, at least part of the support member (30) is located on one side of the rotor assembly (22), and at least part of the valve seat (21) is located on the other side opposite to the rotor assembly (22); the valve device comprises a guide portion (41) and a sliding portion (42), the guide portion (41) comprises a first position-limiting portion ( The guide portion (41) is arranged along the radial direction of the valve device, and the guide portion (41) is located at one of the rotor assembly (22) and the support member (30). One end of the sliding portion (42) is slidably connected to the guide portion (41), and the other end of the sliding portion (42) is limitedly connected or fixedly connected to the other one of the rotor assembly (22) and the support member (30); when the sliding portion (42) abuts against one of the first limiting portion (4111) and the second limiting portion (4112), the rotor assembly (22) stops rotating.

2. The valve device according to claim 1, characterized in that The guide portion (41) comprises a guide groove (411), and the guide groove (411) has an opening along the axial direction of the valve device. One end portion of the sliding portion (42) is located in the guide groove (411).

3. The valve device according to claim 2, characterized in that Along the radial direction of the valve device, the first limiting portion (4111) is closer to the axis of the valve device relative to the second limiting portion (4112), and the guide groove (411) extends from the first limiting portion (4111) to the second limiting portion (4112) in a spiral shape.

4. The valve device according to any one of claims 1 to 3, characterized in that: The valve device comprises a limiting hole (224), wherein the limiting hole (224) is located at one of the support member (30) and the rotor assembly (22), and along the axial direction of the valve device, the opening of the limiting hole (224) faces the guide portion (41), and the other end of the sliding portion (42) is located at the limiting hole (224).

5. The valve device according to claim 4, characterized in that The sliding portion (42) includes a first connecting portion (421), a second connecting portion (422) and a third connecting portion (423), at least a portion of the first connecting portion (421) is located in the guide groove (411), at least a portion of the third connecting portion (423) is located in the limiting hole (224), and along the axial direction of the valve device, the first connecting portion (421) is bent relative to the second connecting portion (422) toward the guide portion (41), and the third connecting portion (423) is bent relative to the second connecting portion (422) toward the limiting hole (224).

6. The valve device according to claims 1 to 5, characterized in that: The rotor assembly (22) includes a groove cavity (226), and along the axial direction of the valve device, the groove cavity (226) has an opening, and the opening faces the support member (30), and at least a portion of the support member (30) is located in the groove cavity (226), and the support member (30) includes a flange portion (31), and the flange portion (31) includes a first side wall portion (311) and a second side wall portion (312), the first side wall portion (311) is interference fit with the inner wall of the sleeve (25), and the second side wall portion (312) abuts against at least a portion of the upper end portion of the rotor assembly (22), and at least a portion of the lower end portion of the rotor assembly (22) abuts against the valve seat (21).

7. The valve device according to claim 6, characterized in that The support member (30) has a first mounting hole (32), and along the axial direction of the valve device, the first mounting hole (32) passes through the upper and lower ends of the support member (30), and the valve device includes a screw rod (24), and at least a portion of the screw rod (24) is located in the first mounting hole (32).

8. The valve device according to claim 7, characterized in that A surface perpendicular to the axial direction of the valve device is defined as a first surface, a projection of a wall that at least partially forms the first mounting hole (32) on the first surface is non-circular, and the screw rod (24) cooperates with the first mounting hole (32) to limit the rotation of the screw rod (24) along the axial direction of the valve device.

9. The valve device according to claim 8, characterized in that One of the screw rod (24) and the support member (30) has a limiting protrusion, and the other of the screw rod (24) and the support member (30) has a limiting groove, and at least part of the limiting protrusion is located in the limiting groove, thereby limiting the axial rotation of the screw rod (24) along the valve device.

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