CN219242682U

CN219242682U - Valve device

Info

Publication number: CN219242682U
Application number: CN202223159234.XU
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Zhejiang Sanhua Automotive Components Co Ltd
Current assignee: Zhejiang Sanhua Automotive Components Co Ltd
Priority date: 2022-06-02
Filing date: 2022-11-28
Publication date: 2023-06-23
Anticipated expiration: 2032-11-28
Also published as: CN117167514A; CN117212491A; CN117212529A; CN117167505A

Abstract

One embodiment of the present application provides a valve device, including a valve element assembly and a valve element seat assembly, the valve element seat assembly including a valve port portion, the valve element seat assembly having a first orifice, a wall forming the first orifice including a stopper portion, the stopper portion being distant from the valve element assembly relative to the valve port portion in an axial direction of the valve element assembly when the valve device is in an open valve state; when the valve device is in a valve closing state, the valve core assembly is in butt joint with the valve opening part, the stop part is in butt joint with the valve core assembly along the axial direction of the valve core assembly, the moving position of the valve core assembly is limited by the stop part, the stop of the valve core assembly is not needed to be realized only by the valve opening part, and the valve core assembly is beneficial to avoiding or slowing down the abrasion of the valve opening part, so that the sealing effect is beneficial to improvement.

Description

Valve device

Technical Field

The present application relates to the field of fluid control technology, and in particular to a valve device.

Background

The valve device comprises a valve core and a valve port part, the valve port part is provided with a valve port, the valve core can adjust the opening of the valve port, when the valve core closes the valve port, the valve core stops moving by striking the valve port part, and in long term, the excessive contact between the valve core and the valve port part is easy to generate abrasion, and the sealing effect is influenced.

Disclosure of Invention

An object of the present application is to provide a valve device which is advantageous for improving the sealing effect.

In order to achieve the above object, one embodiment of the present application adopts the following technical scheme:

the valve device comprises a valve core assembly and a valve core seat assembly, wherein the valve core seat assembly comprises a valve opening part, the valve opening part is provided with a valve opening, the valve core assembly can adjust the opening degree of the valve opening, the valve core seat assembly is provided with a first pore canal, the valve core seat assembly comprises a stopping part, the wall forming the first pore canal comprises the stopping part, when the valve device is in a valve opening state, the first pore canal is communicated with the valve opening, and the stopping part is far away from the valve core assembly relative to the valve opening part along the axial direction of the valve core assembly; when the valve device is in a valve closing state, the valve core assembly is abutted with the valve port part, the first pore canal is relatively not communicated with the valve port, and the stop part is abutted with the valve core assembly along the axial direction of the valve core assembly.

The valve device comprises a valve core assembly and a valve core seat assembly, wherein the valve core seat assembly comprises a valve opening part, the valve opening part is provided with a valve port, the valve core assembly comprises a valve core and a second sealing piece, the valve core assembly can adjust the opening degree of the valve port, the valve core seat assembly is provided with a first pore canal, the valve core seat assembly comprises a stopping part, the wall forming the first pore canal comprises the stopping part, when the valve device is in a valve opening state, the first pore canal is communicated with the valve port, and the stopping part is far away from the valve core assembly relative to the valve port part along the axial direction of the valve core assembly; when the valve device is in a valve closing state, the valve core is in sealing contact with the valve port part through the second sealing piece, the first pore canal is relatively not communicated with the valve port, and the stop part is abutted with the valve core assembly along the axial direction of the valve core assembly.

One embodiment of the present application provides a valve device, including a valve element assembly and a valve element seat assembly, the valve element seat assembly including a valve port portion, the valve element seat assembly having a first orifice, a wall forming the first orifice including a stopper portion, the stopper portion being distant from the valve element assembly relative to the valve port portion in an axial direction of the valve element assembly when the valve device is in an open valve state; when the valve device is in a valve closing state, the valve core assembly is in butt joint with the valve opening part, the stop part is in butt joint with the valve core assembly along the axial direction of the valve core assembly, the moving position of the valve core assembly is limited by the stop part, the stop of the valve core assembly is not needed to be realized only by the valve opening part, and the deformation or abrasion of the valve opening part is avoided or slowed down, so that the sealing effect is improved.

Drawings

FIG. 1 is a schematic cross-sectional view of one embodiment of a valve apparatus of the present application;

FIG. 2 is a schematic cross-sectional view of the valve member of the valve apparatus of FIG. 1 in an open valve state;

FIG. 3 is a schematic cross-sectional view of the valve member of the valve apparatus of FIG. 1 in a closed state;

FIG. 4 is a schematic cross-sectional view of a second embodiment of a valve member;

FIG. 5 is a schematic cross-sectional view of a third embodiment of a valve member;

FIG. 6 is a schematic view of a partial enlarged structure at A in FIG. 3;

FIG. 7 is a schematic view of a partially enlarged construction of a fourth embodiment of a valve member;

FIG. 8 is a schematic view of a partially enlarged construction of a fifth embodiment of a valve component;

FIG. 9 is a schematic view of a partially enlarged construction of a sixth embodiment of a valve component;

fig. 10 is a partially enlarged schematic construction of a seventh embodiment of a valve member.

Detailed Description

The utility model is further described with reference to the accompanying drawings 1-10 and specific examples, in which numerous specific details are set forth in the following detailed description in order to provide a thorough understanding of the utility model. Those skilled in the art will appreciate that the specific components, devices, and features illustrated in the accompanying drawings and described herein are merely exemplary and should not be considered limiting.

The valve device 100 may be applied to a vehicle thermal management system including a new energy vehicle thermal management system in which the valve device 100 is often employed as a throttling element or a switching element or an air conditioning system, and particularly to a circulation system in which CO2 is used as a refrigerant. Referring to fig. 1, the valve device 100 includes a driving part 2 and a valve part 3, the driving part 2 is located at the periphery of a part of the valve part 3, the driving part 2 is fixedly connected or in limited connection with the valve part 3, and further, a sealing arrangement can be performed between the driving part 2 and the valve part 3, which is beneficial to preventing water vapor or other impurities in the external environment from entering from an assembly gap between the driving part 2 and the valve part 3, so that corrosion or failure inside the driving part 2 is caused. The driving part 2 comprises an outer shell and a stator assembly, the stator assembly is positioned on the periphery of the partial valve part 3, the driving part 2 is formed by injection molding at least by taking the stator assembly as an insert, and the outer shell is an injection molding. The valve device 100 is electrically and/or signally connected to the outside via the drive member 2.

Referring to fig. 1 to 3, the valve member 3 includes a rotor assembly 31, a screw rod 32, a valve seat assembly 33, a valve seat assembly 410, a valve seat assembly 35, and a sleeve 36, the valve seat assembly 410 is located at the outer periphery of a portion of the screw rod 32 and at the outer periphery of a portion of the valve seat assembly 33, the valve seat assembly 35 is located at the outer periphery of a further portion of the valve seat assembly 33, the valve seat assembly 410 is fixedly connected with the valve seat assembly 35, the sleeve 36 is sleeved on the outer periphery of the rotor assembly 31, the sleeve 36 is fixedly connected with the valve seat assembly 410, the rotor assembly 31 is fixedly connected with or in limited connection with one end portion of the screw rod 32, the other end portion of the screw rod 32 is in driving connection with the valve seat assembly 33, and in particular, the other end portion of the screw rod 32 is in threaded connection with the valve seat assembly 33. The valve core seat assembly 35 is provided with a valve port 351, when the rotor assembly 31 circumferentially rotates under the excitation of a magnetic field of the stator assembly, the rotor assembly 31 drives the screw rod 32 to rotate, the screw rod 32 can drive the valve core assembly 33 to linearly reciprocate along the axial direction of the valve core assembly 33, so that the valve core assembly 33 can adjust the opening of the valve port 351 by approaching or separating from the valve port 351, and further can throttle a working medium at the valve port 351, the opening of the valve port 351 is 0-100, when the valve core assembly 33 closes the valve port 351, the opening of the valve port 351 is 0, and when the valve core assembly 33 is at the maximum valve opening position, the opening of the valve port 351 is 100. The spool assembly 33 has an axial direction N as shown in fig. 2. The fixed connection described herein includes both detachable and non-detachable connections.

Referring to fig. 1 to 3, the valve device 100 includes a valve member 3, the valve member 3 includes a valve body assembly 33 and a valve body seat assembly 35, the valve body seat assembly 35 is located at a part of the outer circumference of the valve body assembly 33, the valve body seat assembly 35 includes a valve opening portion 350, the valve opening portion 350 has a valve opening 351, the valve body assembly 33 is capable of adjusting an opening degree of the valve opening 351, the valve body seat assembly 35 has a first orifice 352, the valve body seat assembly 35 includes a stopper 430, and a wall forming the first orifice 352 includes the stopper 430, specifically, referring to fig. 2, the first orifice 352 is provided extending in an axial direction of the valve body assembly 33; when the valve device 100 is in the open valve state, referring to fig. 2, the first orifice 352 communicates with the valve port 351, the stopper 430 is located on one side of the valve element assembly 33 in the axial direction of the valve element assembly 33, and the stopper 430 is away from the valve element assembly 33 relative to the valve opening 350 in the axial direction of the valve element assembly 33; when the valve device 100 is in the valve closing state, referring to fig. 3, the valve core assembly 33 is abutted with the valve port portion 350, the first duct 352 is relatively not communicated with the valve port 351, the stop portion 430 is abutted with the valve core assembly 33 along the axial direction of the valve core assembly 33, the stop portion 430 limits the moving position of the valve core assembly 33, compared with the valve core assembly 33 which stops moving by impacting the valve port portion 350, the stop portion 430 can bear part of the axial force transmitted by the valve core assembly 33 and limit the valve closing position of the valve core assembly 33, the stop of the valve core assembly 33 is not required to be realized only through the valve port portion 350, so that the problem of excessive abutting of the valve core assembly 33 and the valve port portion 350 is avoided or slowed down, the abrasion of the valve port portion is avoided or slowed down, and the sealing effect is improved; on the other hand, the stop portion 430 can be used to limit the valve closing position of the valve core assembly 33, so as to avoid excessive friction and wear caused by excessive displacement of the valve core assembly 33 relative to the valve opening 350, thereby being beneficial to improving the sealing effect, and the limit of the stop portion 430 to the valve closing position of the valve core assembly 33 is beneficial to ensuring the position precision of the valve closing of the valve core assembly 33, so as to be beneficial to improving the control precision of the valve core assembly 33 to the opening of the valve port 351, and to be beneficial to improving the control precision of the flow of the working medium.

It will be appreciated that the abutment of the valve element assembly 33 with the valve port portion 350 is in sealing contact and functions to close the valve port 351, and in particular, the valve element assembly 33 includes a valve element 332 and a second seal 415, with the valve element 332 being in sealing contact with the valve port portion 350 via the second seal 415.

In some embodiments, referring to fig. 4, the valve core seat assembly 35 includes a valve core seat 418 and a stopper 430, the valve core seat 418 and the stopper 430 are integrally configured, at least a portion of the stopper 430 is stepped, the stopper 430 includes a stepped surface 81 and a stepped side wall 82, the stepped side wall 82 is away from the valve port portion 350 with respect to the stepped surface 81 along an axial direction of the valve core assembly 33, an inner diameter of the stepped side wall 82 is smaller than an inner diameter of the valve port portion 350, and an inner diameter of the stepped side wall 82 is smaller than an inner diameter of the valve port 351, referring to fig. 4, when the valve device 100 is in a valve-closing state, the stepped surface 81 abuts the valve core assembly 33 along the axial direction of the valve core assembly 33 to limit a valve closing position of the valve core assembly 33; because the step surface 81 of the stop portion 430 is in abutting contact with the valve core assembly 33, the inner diameter of the step side wall 82 is smaller than the inner diameter of the valve port portion 350, and the contact area between the high-pressure working medium located in the first pore canal 352 and the valve core assembly 33 is reduced along the axial direction of the valve core assembly 33, so that the axial impact force of the high-pressure working medium on the valve core assembly 33 is reduced, and the stable operation of the valve core assembly 33 is facilitated. Referring to fig. 5, at least a portion of the stop portion 430 may also be a flange structure, where the inner diameter of the stop portion 430 is smaller than the inner diameter of the valve port portion 350, and the inner diameter of the stop portion 430 is smaller than the inner diameter of the valve port 351, so as to facilitate reducing the axial impact force of the high-pressure working medium on the valve core assembly 33. By providing the valve core seat 418 and the stop portion 430 as an integral structure, at least part of the stop portion 430 is stepped or turned, which is beneficial to reducing the number of parts and facilitating processing.

It will be appreciated that, referring to fig. 2 and 3, the valve core seat 418 and the stop portion 430 may be separately provided, and the valve core seat 418 is fixedly connected or limitedly connected with the stop portion 430. Specifically, referring to fig. 6, the spool seat 418 and the stop portion 430 are separately provided, at least part of the stop portion 430 is located in the spool seat 418, the stop portion 430 includes a first outer sidewall 435, the spool seat 418 is in interference fit with the first outer sidewall 435 along a radial direction of the spool seat 418, and the stop portion 430 has a simple structure and is convenient to assemble. Referring to fig. 7, the spool seat 418 and the stop portion 430 are separately provided, and the spool seat 418 includes a first stepped portion 61 and a flange portion 62, and the first stepped portion 61 and the flange portion 62 clamp the stop portion 430 in the axial direction of the spool assembly 33, which is beneficial to improving the structural strength of the stop portion 430 assembled with the spool seat 418. Referring to fig. 8, the valve core seat 418 and the stop portion 430 are separately provided, at least part of the stop portion 430 is located in the valve core seat 418, the valve core seat 418 has a clamping groove 63, the stop portion 430 includes a clamping portion 436, the clamping portion 436 is located in the clamping groove 63, specifically, the stop portion 430 is a clamp spring, and the stop portion 430 has a simple structure and is convenient to assemble. The valve core seat 418 and the stop part 430 can be welded and fixed, which is beneficial to improving the connection strength of the valve core seat 418 and the stop part 430.

Referring to fig. 6, the stop portion 430 includes a first abutment surface 437, the first abutment surface 437 is disposed toward the valve element assembly 33, the first abutment surface 437 is planar, and it is understood that referring to fig. 9, the first abutment surface 437 may be curved or a combination of planar and curved surfaces; when the valve device 100 is in the valve closing state, the first abutting surface 437 of the stop portion 430 abuts against the valve core assembly 33, which is beneficial to reducing the pressure intensity received by the stop portion 430, reducing the deformation of the stop portion 430, and improving the service life of the stop portion 430. The stop portion 430 and the valve seat 418 may be integrally formed or may be separately formed. Along the axial direction of the valve core assembly 33, the distance from the first abutting surface 437 to the valve port 351 is greater than or equal to 1mm and less than or equal to 6mm, the first abutting surface 437 is used for abutting against the valve core assembly 33, and as a result, the stopper portion 430 is easy to deform, the influence of the deformation of the stopper portion 430 on the dimensional accuracy of the valve port portion 350 is reduced by setting the distance from the first abutting surface 437 to the valve port 351 to be greater than or equal to 1mm, the sealing effect is ensured, the distance from the first abutting surface 437 to the valve port 351 is less than or equal to 6mm, the axial length of the valve core assembly 33 is reduced on the basis of ensuring the dimensional accuracy of the valve port portion 350, and the structural compactness of the valve device 100 is facilitated.

Referring to fig. 6, the first abutment surface 437 of the stop 430 is planar, the first abutment surface 437 is perpendicular to the axial direction of the spool assembly 33, where the perpendicular is not an absolute perpendicular, allowing for errors within 10 °, the spool assembly 33 includes a second abutment surface 331, the second abutment surface 331 is disposed toward the stop 430, the second abutment surface 331 is planar, the second abutment surface 331 is perpendicular to the axial direction of the spool assembly 33, where the perpendicular is not an absolute perpendicular, allowing for errors within 10 °, it is understood that, referring to fig. 9, the second abutment surface 331 may also be curved or a combination of planar and curved surfaces; when the valve device 100 is in the valve-closed state, referring to fig. 6, the second abutment surface 331 abuts against the first abutment surface 437 along the axial direction of the valve element assembly 33, and the second abutment surface 331 is in surface contact with the first abutment surface 437, which is beneficial to reducing the pressure intensity between the stop portion 430 and the valve element assembly 33 and improving the service lives of the stop portion 430 and the valve element assembly 33.

Referring to fig. 6, the spool assembly 33 includes a first end 330, the first end 330 includes not only a point or a line or a surface at one end of the spool assembly 33, the first end 330 includes a portion of a structure near one end of the spool assembly 33, the spool assembly 33 includes a second abutment surface 331, the second abutment surface 331 is located at the first end 330, when the valve device 100 is in a closed state, the second abutment surface 331 located at the first end 330 abuts against the stop portion 430, the stop portion 430 is located at one side of the spool assembly 33 in a valve closing direction, and since the stop portion 430 abuts against the second abutment surface 331 of the spool assembly 33, a contact area between the high-pressure working medium and the spool assembly 33 is reduced in an axial direction of the spool assembly 33, thereby reducing an axial impact force of the high-pressure working medium on the spool assembly 33, and smooth operation of the spool assembly 33.

Referring to fig. 6, in the axial direction of the spool assembly 33, the spool assembly 33 includes a first end 330, the second abutment surface 331 of the spool assembly 33 is located at the first end 330, and when the valve device 100 is in the valve-closed state, the first end 330 abuts against the stopper 430; the hardness of the stop portion 430 is less than that of the first end portion 330, which is beneficial to reducing deformation of the valve element assembly 33 and improving the service life of the valve element assembly 33. The stop portion 430 extends along the circumference of the valve core seat 418, the circumferential extension angle of the stop portion 430 is greater than 180 ° and less than or equal to 360 °, specifically, the circumferential extension angle of the stop portion 430 is 360 °, the stop portion 430 is of an annular structure, which is beneficial to increasing the contact area between the stop portion 430 and the valve core assembly 33, reducing the pressure between the stop portion 430 and the valve core assembly 33, on the other hand, the stop portion 430 is annular, which is beneficial to evenly stressing the valve core assembly 33, and improving the service life of the valve core assembly 33, on the other hand, the valve core assembly 33 contacts with the valve mouth 350 to form a seal, and another seal is formed between the stop portion 430 and the valve core assembly 33, which is beneficial to improving the sealing effect of the valve device 100.

It will be appreciated that the circumference of the spool seat 418 is generally perpendicular to the axial direction of the spool assembly 33, where the generally perpendicular is not an absolute perpendicular, and errors within 10 may be tolerated. The number of the stop portions 430 may be more than two, and the stop portions 430 are disposed at equal intervals along the circumference of the valve seat 418.

Referring to fig. 6-10, the cartridge seat assembly 35 includes a cartridge seat 418 and a stop 430, the cartridge seat assembly 35 having a first orifice 352, the wall forming the first orifice 352 including the stop 430, the valve port 351 being in communication with the first orifice 352 when the valve apparatus 100 is in the open valve state, referring to fig. 2; when the valve device 100 is in the closed state, referring to FIG. 3, the valve port 351 is relatively non-communicating with the first orifice 352; by providing the stop 430 to form at least a portion of the wall of the first bore 352, compactness of the cartridge housing assembly 35 is facilitated.

Referring to fig. 2, the valve device 100 includes a rotor assembly 31, the rotor assembly 31 can drive a valve core assembly 33 to move along an axial direction of the valve core assembly 33, the valve device 100 includes a valve seat assembly 410 and a valve core seat assembly 35, the valve seat assembly 410 is fixedly connected or limitedly connected with the valve core seat assembly 35, at least part of the valve core assembly 33 is located in the valve seat assembly 410, specifically, the valve seat assembly 410 is located at a radial outer side of at least part of the valve core assembly 33, and the valve seat assembly 410 can play a guiding role on the valve core assembly 33; the valve seat assembly 410 has a receiving cavity 409, the spool seat assembly 35 has a first orifice 352, the receiving cavity 409 and the first orifice 352 are located on different sides of the spool assembly 33 in the axial direction of the spool assembly 33, the spool assembly 33 has a balance channel 408, and specifically, referring to fig. 2, the spool assembly 33 has a second orifice 414, the second orifice 414 forming at least part of the balance channel 408; the balance channel 408 is in communication with the receiving cavity 409, and when the valve device 100 is in the valve-closed state, the balance channel 408 is in communication with the first duct 352, which is beneficial to reducing the pressure difference between the two axial ends of the valve core assembly 33 and to smooth operation of the valve core assembly 33.

Referring to fig. 2, the valve device 100 has a spool chamber, a first passage 411 and a second passage 412, the first passage 411 communicating with the first duct 352, the spool chamber being located radially outside of a portion of the spool assembly 33, the spool chamber communicating with the second passage 412, the valve device 100 including a first seal 413, the first seal 413 being located between the valve seat assembly 410 and the spool assembly 33, the spool assembly 33 pressing the first seal 413 against the valve seat assembly 410 in a radial direction of the spool assembly 33, the first seal 413 serving to relatively separate the spool chamber from the accommodation chamber 409. It is understood that the valve apparatus 100 may function as an electronic expansion valve. The first sealing member 413 may be a single O-ring, or may include a sealing ring and a sealing ring, where the sealing ring is in contact with the sealing ring, specifically, the sealing ring is located on the radial outer side of the sealing ring, the sealing ring is in contact with the valve seat assembly 410, the sealing ring is in contact with the valve core assembly 33, along the radial direction of the first sealing member 413, the first sealing member 413 is pressed between the valve core assembly 33 and the valve seat assembly 410, and the valve core assembly 33 is in contact with the sealing ring of the first sealing member 413, which is beneficial to prolonging the service life of the sealing ring and guiding the valve core assembly 33.

Referring to fig. 6, the spool assembly 33 includes a spool 332, the spool 332 being of a metallic material, the spool 332 including a second outer sidewall 333, the second outer sidewall 333 being generally parallel to the axial direction of the spool assembly 33, where the generally parallel is not an absolute parallel, and may allow for errors within 10 °; the valve body 332 includes a first groove portion 334, the first groove portion 334 has a first groove 335, the first groove 335 is opened at the second outer sidewall 333, the valve body assembly 33 includes a second seal 415, the second seal 415 is made of a non-metal material, at least a portion of the second seal 415 is located in the first groove 335, a distance from the first groove portion 334 to the first abutting surface 437 is greater than or equal to 0.5mm and less than or equal to 3mm along an axial direction of the valve body assembly 33, when the valve device 100 is in a valve-closing state, the first groove portion 334 and the valve opening 350 press the second seal 415, which is beneficial to improving a sealing effect of the valve device 100, and on the other hand, by providing a stop portion 430 to limit a valve closing position of the valve body assembly 33, friction abrasion between the second seal 415 and the valve opening 350 caused by an excessive displacement amount of the second seal 415 relative to the valve opening 350 is beneficial to improve a sealing effect. The first abutting surface 437 of the stop portion 430 is configured to make abutting contact with the valve element assembly 33, and by providing the first groove portion 334 with a distance from the first abutting surface 437 of 0.5mm or more, the first groove portion 334 is advantageously prevented from being excessively thin toward the wall of the first abutting surface 437, thereby advantageously ensuring the structural strength of the valve element assembly 33, and by providing the first groove portion 334 with a distance from the first abutting surface 437 of 3mm or less, the axial length of the valve element assembly 33 is advantageously reduced, and the valve device 100 is advantageously compact.

It will be appreciated that the second outer sidewall 333 may also have an angle less than or equal to 90 ° with the axial direction of the valve element assembly 33, and the stop portion 430 is provided to limit the valve closing position of the valve element assembly 33, so as to facilitate controlling the compression amount of the second seal 415, thereby facilitating improving the sealing effect. In another embodiment, referring to fig. 10, the valve core assembly 33 may not be provided with the second sealing member 415, the valve core 332 is made of a metal material, the valve opening portion 350 is made of a non-metal material, when the valve device 100 is in the valve-closed state, the second outer side wall 333 contacts with the valve opening portion 350, and the structure of the valve opening portion 350 may be similar to that of the first sealing member 413, that is, the valve opening portion 350 may be a separate sealing ring structure, a combined sealing form of a sealing ring and a rectangular ring, or a combined sealing form of a sealing ring and other wear-resistant plastic materials, at least part of the valve opening portion 350 may be a wear-resistant plastic material, at least part of the first sealing member 413 may be made of a wear-resistant plastic material, and at least part of the valve opening portion 350 and the first sealing member 413 may be in various forms such as an i-shaped, a semi-i-shaped, a bowl-shaped, a 1-shaped form, and the like.

It should be noted that: the above embodiments are only for illustrating the present utility model and not for limiting the technical solutions described in the present utility model, and although the present utility model has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the present utility model may be modified or substituted by the same, and all the technical solutions and modifications thereof without departing from the spirit and scope of the present utility model are intended to be included in the scope of the claims of the present utility model.

Claims

1. A valve device (100) comprising a valve core assembly (33) and a valve core seat assembly (35), characterized in that the valve core seat assembly (35) comprises a valve port (350), the valve port (350) is provided with a valve port (351), the valve core assembly (33) can adjust the opening degree of the valve port (351), the valve core seat assembly (35) is provided with a first pore canal (352), the valve core seat assembly (35) comprises a stopping part (430), the wall forming the first pore canal (352) comprises the stopping part (430), when the valve device (100) is in an open valve state, the first pore canal (352) is communicated with the valve port (351), and the stopping part (430) is far away from the valve core assembly (33) relative to the valve port (350) along the axial direction of the valve core assembly (33); when the valve device (100) is in a valve closing state, the valve core assembly (33) is abutted against the valve port part (350), the first pore canal (352) is relatively not communicated with the valve port (351), and the stop part (430) is abutted against the valve core assembly (33) along the axial direction of the valve core assembly (33).

2. A valve device (100) comprising a valve cartridge assembly (33) and a valve cartridge seat assembly (35), characterized in that the valve cartridge seat assembly (35) comprises a valve port (350), the valve port (350) is provided with a valve port (351), the valve cartridge assembly (33) comprises a valve cartridge (332) and a second sealing element (415), the valve cartridge assembly (33) can adjust the opening degree of the valve port (351), the valve cartridge seat assembly (35) is provided with a first pore canal (352), the valve cartridge seat assembly (35) comprises a stopping part (430), the wall forming the first pore canal (352) comprises the stopping part (430), when the valve device (100) is in an open valve state, the first pore canal (352) is communicated with the valve port (351), and the stopping part (430) is far away from the valve cartridge assembly (33) relative to the valve port (350) along the axial direction of the valve cartridge assembly (33); when the valve device (100) is in a valve closing state, the valve core (332) is in sealing contact with the valve port part (350) through the second sealing element (415), the first pore canal (352) is relatively not communicated with the valve port (351), and the stop part (430) is abutted with the valve core assembly (33) along the axial direction of the valve core assembly (33).

3. A valve device according to claim 1 or 2, characterized in that: the valve core seat assembly (35) comprises a valve core seat (418);

the valve core seat (418) and the stop part (430) are of an integral structure, at least part of the stop part (430) is in a step shape, the stop part (430) comprises a step surface (81) and a step side wall (82), the step side wall (82) is far away from the valve core assembly (350) along the axial direction of the valve core assembly (33) relative to the step surface (81), the inner diameter of the step side wall (82) is smaller than the inner diameter of the valve core assembly (350), and when the valve device (100) is in a valve closing state, the step surface (81) is abutted with the valve core assembly (33) along the axial direction of the valve core assembly (33);

or, the valve core seat (418) and the stop part (430) are of an integrated structure, at least part of the stop part (430) is of a flanging structure, and the inner diameter of the stop part (430) is smaller than the inner diameter of the valve opening part (350);

or, the valve core seat (418) and the stop part (430) are arranged in a split mode, and the valve core seat (418) is fixedly connected or in limiting connection with the stop part (430).

4. A valve device according to claim 3, characterized in that: the stopper (430) includes a first abutment surface (437), and when the valve device (100) is in a valve-closed state, the first abutment surface (437) abuts the valve element assembly (33) in the axial direction of the valve element assembly (33); along the axial direction of the valve core assembly (33), the distance from the first abutting surface (437) to the valve port (351) is greater than or equal to 1mm and less than or equal to 6mm.

5. The valve device of claim 4, wherein: the stop part (430) extends along the circumferential direction of the valve core seat (418), and the circumferential extension angle is more than 180 degrees and less than or equal to 360 degrees;

or, the number of the stop parts (430) is more than two, and the stop parts (430) are distributed and arranged at equal intervals along the circumferential direction of the valve core seat (418).

6. A valve device according to claim 4 or 5, characterized in that: the spool assembly (33) includes a spool (332), the spool (332) including a second outer sidewall (333);

the valve core (332) comprises a first groove part (334), the first groove part (334) is provided with a first groove (335), the first groove (335) is opened at the second outer side wall (333), the valve core assembly (33) comprises a second sealing piece (415), at least part of the second sealing piece (415) is positioned in the first groove (335), the distance from the first groove part (334) to the first abutting surface (437) is more than or equal to 0.5mm and less than or equal to 3mm along the axial direction of the valve core assembly (33), and when the valve device (100) is in a valve closing state, the first groove part (334) and the valve port part (350) press the second sealing piece (415);

alternatively, the valve body (332) is made of a metal material, the valve port portion (350) is made of a non-metal material, and the second outer side wall (333) is in contact with the valve port portion (350) when the valve device (100) is in a closed state.

7. A valve device according to claim 4 or 5, characterized in that: the first abutting surface (437) is a plane, the first abutting surface (437) is perpendicular to the axial direction of the valve core assembly (33), the valve core assembly (33) comprises a second abutting surface (331), the second abutting surface (331) is a plane, the second abutting surface (331) is perpendicular to the axial direction of the valve core assembly (33), and when the valve device (100) is in a valve closing state, the second abutting surface (331) abuts against the first abutting surface (437) along the axial direction of the valve core assembly (33).

8. The valve device of claim 6, wherein: the first abutting surface (437) is a plane, the first abutting surface (437) is perpendicular to the axial direction of the valve core assembly (33), the valve core assembly (33) comprises a second abutting surface (331), the second abutting surface (331) is a plane, the second abutting surface (331) is perpendicular to the axial direction of the valve core assembly (33), and when the valve device (100) is in a valve closing state, the second abutting surface (331) abuts against the first abutting surface (437) along the axial direction of the valve core assembly (33).

9. The valve device of claim 7, wherein: the valve core assembly (33) comprises a first end (330) along the axial direction of the valve core assembly (33), the second abutting surface (331) is positioned at the first end (330), and the hardness of the stopping part (430) is smaller than that of the first end (330).

10. The valve device of claim 8, wherein: the valve core assembly (33) comprises a first end (330) along the axial direction of the valve core assembly (33), the second abutting surface (331) is positioned at the first end (330), and the hardness of the stopping part (430) is smaller than that of the first end (330).

11. A valve device according to claim 3, characterized in that: the stop part (430) comprises a first outer side wall (435), and the valve core seat (418) is in interference fit with the first outer side wall (435) along the radial direction of the valve core seat (418);

alternatively, the valve core seat (418) comprises a first step part (61) and a flanging part (62), and the stop part (430) is clamped by the first step part (61) and the flanging part (62) along the axial direction of the valve core assembly (33);

or, the valve core seat (418) and the stop part (430) are welded and fixed;

alternatively, the valve core seat (418) is provided with a clamping groove (63), the stop part (430) comprises a clamping part (436), and the clamping part (436) is positioned in the clamping groove (63).

12. The valve device of any one of claims 1-2, 4-5, 8-11, wherein: the valve device (100) comprises a rotor assembly (31), the rotor assembly (31) can drive the valve core assembly (33) to move along the axial direction of the valve core assembly (33), the valve device (100) comprises a valve seat assembly (410) and a first sealing piece (413), at least part of the valve core assembly (33) is positioned in the valve seat assembly (410), the valve core assembly (33) and the valve seat assembly (410) compress the first sealing piece (413) along the radial direction of the valve core assembly (33), the valve seat assembly (410) is provided with a containing cavity (409), the containing cavity (409) and the first pore canal (352) are positioned on different sides of the valve core assembly (33) along the axial direction of the valve core assembly (33), the valve core assembly (33) is provided with a balancing channel (408), and the balancing channel (408) is communicated with the containing cavity (409) when the valve device (100) is in a closed valve state, and the balancing channel (408) is communicated with the first pore canal (352).

13. A valve device according to claim 3, characterized in that: the valve device (100) comprises a rotor assembly (31), the rotor assembly (31) can drive the valve core assembly (33) to move along the axial direction of the valve core assembly (33), the valve device (100) comprises a valve seat assembly (410) and a first sealing piece (413), at least part of the valve core assembly (33) is positioned in the valve seat assembly (410), the valve core assembly (33) and the valve seat assembly (410) compress the first sealing piece (413) along the radial direction of the valve core assembly (33), the valve seat assembly (410) is provided with a containing cavity (409), the containing cavity (409) and the first pore canal (352) are positioned on different sides of the valve core assembly (33) along the axial direction of the valve core assembly (33), the valve core assembly (33) is provided with a balancing channel (408), and the balancing channel (408) is communicated with the containing cavity (409) when the valve device (100) is in a closed valve state, and the balancing channel (408) is communicated with the first pore canal (352).

14. The valve device of claim 6, wherein: the valve device (100) comprises a rotor assembly (31), the rotor assembly (31) can drive the valve core assembly (33) to move along the axial direction of the valve core assembly (33), the valve device (100) comprises a valve seat assembly (410) and a first sealing piece (413), at least part of the valve core assembly (33) is positioned in the valve seat assembly (410), the valve core assembly (33) and the valve seat assembly (410) compress the first sealing piece (413) along the radial direction of the valve core assembly (33), the valve seat assembly (410) is provided with a containing cavity (409), the containing cavity (409) and the first pore canal (352) are positioned on different sides of the valve core assembly (33) along the axial direction of the valve core assembly (33), the valve core assembly (33) is provided with a balancing channel (408), and the balancing channel (408) is communicated with the containing cavity (409) when the valve device (100) is in a closed valve state, and the balancing channel (408) is communicated with the first pore canal (352).

15. The valve device of claim 7, wherein: the valve device (100) comprises a rotor assembly (31), the rotor assembly (31) can drive the valve core assembly (33) to move along the axial direction of the valve core assembly (33), the valve device (100) comprises a valve seat assembly (410) and a first sealing piece (413), at least part of the valve core assembly (33) is positioned in the valve seat assembly (410), the valve core assembly (33) and the valve seat assembly (410) compress the first sealing piece (413) along the radial direction of the valve core assembly (33), the valve seat assembly (410) is provided with a containing cavity (409), the containing cavity (409) and the first pore canal (352) are positioned on different sides of the valve core assembly (33) along the axial direction of the valve core assembly (33), the valve core assembly (33) is provided with a balancing channel (408), and the balancing channel (408) is communicated with the containing cavity (409) when the valve device (100) is in a closed valve state, and the balancing channel (408) is communicated with the first pore canal (352).