CN218895040U - Electromagnetic valve - Google Patents

Abstract

The utility model provides a solenoid valve, includes the diaphragm subassembly, the diaphragm subassembly includes diaphragm part and locating part, the locating part includes a plurality of convex parts, follows the radial of solenoid valve, adjacent the convex part interval sets up, the convex part with diaphragm part butt, the convex part is followed the circumference of locating part extends, follows the axis of solenoid valve extremely the periphery direction of locating part, each the convex part is followed the axial height reduction of solenoid valve, the diaphragm part can be deformed one by one with the region of convex part butt like this to sealing performance between diaphragm part and the locating part is better.

Description

Electromagnetic valve

Technical Field

The present disclosure relates to fluid control technology, and in particular, to a solenoid valve.

Background

In the thermal management system, an electromagnetic valve is adopted to control the flow of the refrigerant, and a diaphragm electromagnetic valve is a common electromagnetic valve. The membrane solenoid valve relies on the deformation of diaphragm to realize the switch of valve, and the locating part of diaphragm is mostly straight structure, has the problem that takes place to leak in between locating part and the diaphragm.

Disclosure of Invention

The purpose of this application is to provide a solenoid valve, is favorable to improving the sealing performance of diaphragm solenoid valve.

An embodiment of the application provides a solenoid valve, including the diaphragm subassembly, the diaphragm subassembly includes diaphragm part and locating part, the locating part includes a plurality of convex parts, follows the radial of solenoid valve, adjacent the convex part interval sets up, the convex part with diaphragm part butt, the convex part is followed the circumference extension of locating part, follows the axis of solenoid valve extremely the periphery direction of locating part, each the convex part is followed the axial height reduction of solenoid valve.

The utility model provides an embodiment provides a solenoid valve of this solenoid valve, the locating part of this solenoid valve include the convex part, along the axis of solenoid valve to locating part periphery direction, the axial height of convex part reduces, diaphragm part and convex part butt, and each convex part reduces along the axial height of solenoid valve, and diaphragm part and convex part complex region can be deformed one by one like this to can make the sealing performance between diaphragm part and the locating part better.

Drawings

FIG. 1 is a schematic perspective view of a solenoid valve according to the present utility model;

FIG. 2 is a schematic cross-sectional view of the solenoid valve of FIG. 1 in a closed state;

FIG. 3 is a schematic cross-sectional view of the solenoid valve of FIG. 1 in an open state;

FIG. 4 is a schematic perspective view of the diaphragm assembly of FIG. 2;

FIG. 5 is a schematic cross-sectional view of the diaphragm assembly of FIG. 4;

FIG. 6 is a schematic perspective view of the compression member of FIG. 5;

FIG. 7 is a schematic perspective view of the webbing member of FIG. 5;

FIG. 8 is a schematic cross-sectional structural view of the webbing member shown in FIG. 7;

FIG. 9 is a schematic cross-sectional view of another embodiment of the webbing member shown in FIG. 8;

fig. 10 is a schematic perspective view of the stopper shown in fig. 5.

1. A coil assembly; 11. a coil section; 12. a magnetizer;

2. an iron core assembly; 21. a stationary core; 22. a movable iron core; 221. a support surface; 222. a first groove; 223. a seal; 24. an elastic element; 241. a first end; 242. a second end;

3. a valve seat; 31. a first connection portion; 32. a second connecting portion; 33. a first port; 34. a second port; 35. a first channel; 36. a second channel; 37. a second convex portion;

4. a diaphragm assembly; 41. a diaphragm member; 411. a concave portion; 412. an outer peripheral portion; 413. a second hole portion; 414. a first wall; 415. a bending portion; 416. a first mounting hole portion; 42. a limiting piece; 421. a convex portion; 422. a gentle portion; 424. a first mating portion; 425. a first hole portion; 43. a pressing member; 431. a boss; 4311. a limit part; 4312. a groove portion; 432. a second wall; 434. a support part; 435. a first convex portion;

5. a valve body; 51. a mating portion; 52. an inlet chamber; 53. an outlet chamber; 54. a second mating portion;

6. a sleeve;

70. a first elastic element;

100. an electromagnetic valve; 101. a screw; 102. a valve cavity; 103. a valve cover member I; 104. a valve cover member II; 105. a first chamber;

Detailed Description

In order that those skilled in the art will better understand the present utility model, the present utility model will be further described with reference to the accompanying drawings and specific examples.

In the following description of the embodiments, for ease of understanding, terms indicating directions (for example, "upper", "lower", "upper end face", etc.) are appropriately used, and the above terms are not intended to limit the present utility model, as examples, when the solenoid valve is energized and opened, the movement direction of the diaphragm assembly is "upper", and when the solenoid valve is de-energized and closed, the movement direction of the diaphragm assembly is "lower". As used herein, "axial" refers to the direction of movement or up and down of the diaphragm assembly, the "radial" is the direction perpendicular to the axial direction, and the "axial direction" is the direction in which the centerline of the diaphragm assembly is located.

Referring to fig. 1 to 10, a solenoid valve 100 includes: coil pack 1, iron core subassembly 2, disk seat 3, diaphragm subassembly 4 and valve body 5, coil pack 1 cover is located iron core subassembly 2, disk seat 3 and valve body 5 fixed connection or spacing connection, in this embodiment, fixed mode is threaded connection, diaphragm subassembly 4 and disk seat 3 spacing connection, specifically, at least part diaphragm subassembly 4 is located between disk seat 3 and the valve body 5, the bottom of disk seat 3 compresses tightly the outside of diaphragm subassembly 4, realize the location of diaphragm subassembly, under solenoid valve 100 is in the valve-opening state, diaphragm subassembly 4 can follow solenoid valve 100's axial action.

The coil assembly 1 includes a coil portion 11 and a magnetic conductor 12, the coil portion 11 and the magnetic conductor 12 are fixedly clamped, the coil portion 11 and the magnetic conductor 12 are provided with through holes, the through holes of the coil portion 11 and the magnetic conductor 12 are coaxially arranged, and the sleeve 6 is positioned in the through holes of the coil portion 11 and the magnetic conductor 12.

The core assembly 2 includes a stationary core 21, a movable core 22, and an elastic member 24; the static iron core 21 is welded and fixed with the sleeve 6, in this embodiment, the static iron core 21 and the sleeve 6 are welded and fixed by laser, the movable iron core 22 is positioned below the static iron core 21 and at least partially positioned in the sleeve 6, an elastic element 24 is arranged between the static iron core 21 and the movable iron core 22, and the movable iron core 22 can act relative to the static iron core 21 along the axial direction of the electromagnetic valve 100; the electromagnetic valve 100 comprises a screw 101, and the static iron core 21 is fixedly connected with the magnetizer 12 through the screw 101, so that the connection between the coil assembly 1 and the iron core assembly 2 is more stable.

Specifically, the movable iron core 22 has a first groove 222 and a supporting surface 221, the first groove 222 faces the static iron core 21, the supporting surface 221 is disposed at the bottom of the first groove 222, and the supporting surface 221 extends along the radial direction of the electromagnetic valve 100; the elastic element 24 is internally arranged in the first groove 222, the first end 241 of the elastic element 24 abuts against the static iron core, the second end 242 of the elastic element abuts against the supporting surface 221 of the movable iron core, the movable iron core 22 is at least partially positioned in the sleeve 6, the movable iron core 22 is in clearance fit with the sleeve 6, and the movable iron core 22 abuts against the second end 242 of the elastic element along the axial direction to limit. Along the axial direction of the electromagnetic valve 100, a sealing piece 223 is clamped at the bottom of the movable iron core 22, the sealing piece 223 abuts against the valve seat 3 to limit, and the valve seat 3 is positioned below the sealing piece 223.

Referring to fig. 2 and 3, the electromagnetic valve 100 includes a first valve cover member 103 and a second valve cover member 104, where the first valve cover member 103 is fixedly connected or limitedly connected with the valve seat 3, in this embodiment, the first valve cover member 103 is in threaded connection with the valve seat 3, the first valve cover member 103 limits the second valve cover member 104 along the axial direction of the electromagnetic valve 100, the second valve cover member 104 contacts with at least part of the upper end surface of the valve seat 3, and in this embodiment, the second valve cover member 104 and the sleeve 6 are processed into one integral piece, so that the connection between the sleeve 6 and the second valve cover member 104 is omitted, and the electromagnetic valve 100 is more compact in structure.

The valve seat 3 comprises a first connecting part 31 and a second connecting part 32, the wall of the first connecting part 31 comprises at least part of the outer side wall of the valve seat 3, the first connecting part 31 is fixedly connected or in limit connection with the valve body 5, in the embodiment, the first connecting part 31 is in threaded connection with the valve body 5, so that the valve seat 3 cannot fall off from the valve body 5; the second connecting portion 32 is formed on the inner side wall of the valve seat 3, the second connecting portion 32 is fixedly connected or limitedly connected with the first valve cover member 103, and in this embodiment, the second connecting portion 32 is in threaded connection with the first valve cover member 103.

The valve seat 3 is provided with a first port 33, a second port 34, a first channel 35 and a second channel 36, the upper end surface of the valve seat 3 is provided with the first port 33, and the sealing element can open and close the first port 33 along with the action of the movable iron core 22, and the first port 33 is communicated with the first channel 35; the upper end surface of the valve seat 3 is also provided with a second port 34, and the second port 34 is communicated with the second channel 36, or the second channel 36 is provided with the second port 34, and a plurality of second ports 34 and second channels 36 can be provided, in this embodiment, the valve seat 3 is provided with two second ports 34, so that the circulation speed of the medium in the electromagnetic valve 100 can be improved. In the present embodiment, the first passage 35 is provided along the axial direction of the solenoid valve 100, and the first passage 35 is provided in parallel with the second passage 36.

The solenoid valve 100 has a valve chamber 102 and a first chamber 105, the wall of the valve chamber 102 comprising the lower end face of the valve seat 3 and at least part of the wall of the diaphragm assembly 4, the wall of the first chamber 105 comprising at least part of the outer side wall of the valve seat 3 and at least part of the inner side wall of the valve body 5; the first passage 35 communicates with the first chamber 105 of the solenoid valve 100, the second passage 36 communicates with the valve chamber 102, and in the valve-open state of the solenoid valve 100, the first port 33 is opened, the first passage 35 communicates with the second passage 36, and the valve chamber 102 can communicate with the first chamber 105.

The solenoid valve 100 includes a first elastic member 70, an upper end of the first elastic member 70 abuts against a lower end surface of the valve seat 3, a lower end of the first elastic member 70 abuts against the diaphragm assembly 4, and in a valve closing state of the solenoid valve 100, the first elastic member 70 can prevent the diaphragm assembly 4 from being offset in an axial direction of the solenoid valve 100, so that a shut-off function of the solenoid valve 100 is not disabled.

Referring to fig. 2, 3 and 5, the diaphragm assembly 4 is located in a cavity formed by the valve body 5 and the valve seat 3, the diaphragm assembly 4 includes a diaphragm member 41, a limiting member 42 and a pressing member 43, the limiting member 42 limits the diaphragm member 41 along the axial direction of the electromagnetic valve 100, the pressing member 43 abuts against the diaphragm member 41, the pressing member limits the diaphragm member along the axial direction of the electromagnetic valve, the pressing member is in limiting connection with the limiting member, and at least part of the diaphragm member 41 is located between the pressing member 43 and the limiting member 42 along the axial direction of the electromagnetic valve 100; specifically, the diaphragm member 41 includes a first mounting hole portion 416, the first mounting hole portion 416 is formed on a wall of the diaphragm member 41, the first mounting hole portion 416 has openings on two sides of the diaphragm member 41, the pressing member 43 passes through the first mounting hole portion 416, the diaphragm member 41 can be sleeved on at least a portion of the pressing member 43 through the first mounting hole portion 416, the limiting member 42 includes a first hole portion 425, the first hole portion 425 penetrates through the limiting member 42 in an axial direction of the solenoid valve 100, the limiting member 42 is sleeved on at least a portion of the pressing member 43 through the first hole portion 425, the limiting member 42 is in interference fit with the pressing member 43, and the diaphragm member 41, the limiting member 42 and the pressing member 43 form the diaphragm assembly 4. This prevents the webbing member 41 from falling off, which is advantageous in reducing the occurrence of internal leakage in the webbing assembly 4. The hold-down member 43 has a second wall 432 at least part of the hold-down member 43 includes a second wall 432, the second wall 432 abutting against at least part of the upper end surface of the webbing member 41, at least part of the lower end surface of the webbing member 41 cooperating with the hold-down member 43, in this embodiment the webbing member 41 being sealingly connected to the hold-down member 43. Along the axial direction of the solenoid valve 100, the pressing member 43, the diaphragm member 41, and the stopper 42 are disposed in this order.

In this embodiment, the limiting member 42 is a sealing gasket, the upper end surface of the limiting member 42 is formed with a plurality of protrusions 421, and adjacent protrusions 421 are disposed at intervals, or in other words, adjacent protrusions 421 are spaced apart by a distance along the radial direction of the solenoid valve 100, and the height of the protrusions 421 along the axial direction of the solenoid valve 100 gradually decreases along the direction from the axis of the solenoid valve 100 to the outer circumference of the limiting member 42. Specifically, the upper end surface of the limiting member 42 is formed with a wave-shaped structure, the protruding portions 421 extend along the circumferential direction of the limiting member 42, the axial heights of the adjacent protruding portions 421 are reduced along the direction from the axis of the electromagnetic valve 100 to the outer circumference of the limiting member 42, the limiting member 42 is provided with a plurality of protruding portions 421 with reduced axial heights to be matched with the diaphragm member 41, and when the limiting member 42 is installed, the diaphragm member 41 can be regularly deformed, so that the sealing effect between the limiting member 42 and the diaphragm member 41 is better.

The stopper 42 includes a gentle portion 422, along the axial direction of the solenoid valve 100, the gentle portion 422 faces the valve seat 3, at least part of the upper end surface of the stopper 42 includes a wall of the gentle portion 422, the gentle portion 422 is away from the axial line of the solenoid valve 100 with respect to the convex portion 421, the gentle portion 422 contacts the diaphragm member 41, the gentle portion 422 contacts the diaphragm assembly 4, specifically, the gentle portion 422 abuts against the diaphragm assembly 4, so that the stopper 42 can be attached to the diaphragm member 41, and in this embodiment, when the stopper 42 is installed by riveting, the gentle portion 422 can clarify the installation position of the stopper 42. When the flat portion 422 of the limiting member 42 contacts the diaphragm member 41, the limiting member 42 is already installed in place, so that when the limiting member 42 is installed, the flat portion 422 contacts the diaphragm member 41, the limiting member 42 can be installed in place, the excessive extrusion of the limiting member 42 is reduced, the service life of the diaphragm member 41 caused by excessive deformation of the diaphragm member 41 is reduced, the installation step of the limiting member 42 can be standardized, and the standardization of product processing is realized.

Specifically, in the process of riveting and fixing the limiting piece 42, the convex portions 421 of the limiting piece 42 are contacted with the diaphragm component 41 one by one, the diaphragm component 41 can be uniformly deformed, so that the diaphragm component 41 and the limiting piece 42 can form a sealing surface with higher fitting degree, the sealing performance of the matching position of the limiting piece 42 and the diaphragm component 41 is improved, and the possibility of internal leakage is reduced.

The diaphragm member 41 includes concave portions 411, in this embodiment, after the convex portions 421 of the limiting members 42 are matched with the diaphragm member 41, the convex portions 421 of the limiting members 42 press the diaphragm member 41, the diaphragm member 41 deforms, the diaphragm member 41 forms concave portions 411 that are matched with the convex portions 421 of the limiting members 42 one by one, and the convex portions 421 are located in the cavities of the concave portions 411; referring to fig. 5 and 9, in another embodiment, a concave portion 411 is formed on the diaphragm member 41, the concave portion 411 is matched with the convex portions 421 of the limiting members 42 one by one, and the limiting members 42 limit at least part of the diaphragm member 41 along the axial direction of the electromagnetic valve 100, so that the convex portions 421 of the limiting members 42 are matched with the diaphragm member 41 to form a seal, and the limiting members 42 limit the diaphragm member 41 along the axial direction of the electromagnetic valve, thereby reducing the possibility of falling off of the diaphragm member 41, and preventing the sealing function from being disabled. Alternatively, the diaphragm member 41 includes a first wall 414, the first wall 414 faces the stopper member 42 along the axial direction of the solenoid valve 100, at least part of the first wall 414 of the diaphragm member 41 includes a wall of the recess 411, the protrusion 421 of the stopper member 42 contacts with at least part of the first wall 414 of the diaphragm member 41, so that the protrusion 421 of the stopper member 42 can be engaged with the recess 411 of the diaphragm member 41, in this embodiment, the protrusion 421 of the stopper member 42 is in sealing connection with the recess 411 of the diaphragm member 41, and the stopper member 42 limits at least part of the diaphragm member 41 along the axial direction of the solenoid valve 100, so that the sealing effect between the protrusion 421 of the stopper member 42 and the recess 411 of the diaphragm member 41 can be improved, and the diaphragm member 41 is not easily separated, resulting in failure of the sealing function of the diaphragm member 41.

Referring to fig. 5, the pressing member 43 includes a boss 431, at least a portion of the bottom wall of the pressing member 43 includes a wall of the boss 431, the boss 431 extends in a direction away from the valve seat 3 in an axial direction of the solenoid valve 100, the first hole portion 425 accommodates the boss 431, and the first hole portion 425 is interference-fitted with the boss 431; the diaphragm member 41 and the stopper 42 each have a through hole, the protrusion 431 passes through the through holes of the diaphragm member 41 and the stopper 42, specifically, the pressing member 43 has a second wall 432, at least part of the bottom wall of the pressing member 43 includes the second wall 432, the second wall 432 faces the diaphragm member 41 in the axial direction of the solenoid valve 100, the upper end surface of the diaphragm member 41 contacts the second wall 432 of the pressing member 43, and the stopper 42 is interference fit with the protrusion 431. Alternatively, the diaphragm member 41 and the limiting member 42 are both sleeved on the protruding portion 431 of the pressing member 43, and the limiting member 42 and the pressing member 43 are fixed by riveting fit. Thus, the limiting piece 42 is not easy to fall off from the pressing piece 43, and the pressing piece 43 limits at least part of the diaphragm component 41 along the axial direction of the electromagnetic valve 100, so that the deformation range of the diaphragm component 41 is smaller, and the possibility that the diaphragm component 41 is excessively deformed due to the impact of a medium is reduced.

The pressing member 43 includes a supporting portion 434 and a first protruding portion 435, at least a portion of an upper end wall of the pressing member 43 includes a wall of the supporting portion 434, the supporting portion 434 abuts against a lower end of the first elastic element 70, and in a state in which the solenoid valve 100 is in a power-off state, the first elastic element 70 can push the supporting portion 434 to close the solenoid valve; the outer periphery of the pressing member 43 is formed with a first protrusion 435, the first protrusion 435 protrudes toward the valve seat 3 along the axial direction of the solenoid valve 100, and the first protrusion 435 can limit the first elastic element 70 along the radial direction of the solenoid valve 100, so that the first elastic element 70 is not easy to deviate, and the stability of the action of the first elastic element 70 is improved.

Referring to fig. 2, 3 and 5, the protrusion 431 includes a limiting portion 4311, the limiting portion 4311 limits the limiting member 42 along the axial direction of the solenoid valve 100, specifically, the protrusion 431 extends toward a direction away from the valve seat 3 along the axial direction of the solenoid valve 100, the protrusion 431 includes a groove 4312, the groove 4312 is formed at the top of the protrusion 431, the opening of the groove 4312 faces away from the valve seat 3, in this embodiment, the process of flaring the groove 4312 forms the limiting portion 4311, the limiting portion is formed into a cylindrical structure, the inner diameter of the limiting portion gradually increases along the valve closing direction of the solenoid valve, and the limiting portion 4311 is capable of limiting the limiting member 42 along the axial direction of the solenoid valve 100. The external diameter of spacing portion 4311 is greater than the internal diameter of locating part 42, spacing portion 4311 offsets with the bottom of locating part 42, specifically, locating part 42 includes first cooperation portion 424, first cooperation portion 424 takes shape in the bottom of locating part 42, along the axial of solenoid valve 100, valve seat 3 is kept away from to relative bellying 431 of first cooperation portion 424, first cooperation portion 424 is spacing with spacing portion 4311 to be connected, can promote the joint strength between locating part 42 and the compact part 43 like this, make locating part 42 be difficult for following compact part 43 and drop, be favorable to improving solenoid valve 100's life.

The diaphragm member 41 further includes a peripheral portion 412, the outer portion Zhou Yuanbu 412 is in contact with the valve body 5, the outer portion Zhou Yuanbu is in contact with the valve seat 3, the peripheral portion 412 is located between the valve body 5 and the valve seat 3 in the axial direction of the solenoid valve 100, specifically, the peripheral portion 412 is circumferentially distributed along the diaphragm member 41, the valve body 5 includes a fitting portion 51, the fitting portion 51 limits the peripheral portion 412 in the axial direction of the solenoid valve 100, and after the valve seat 3 is fixedly connected with the valve body 5, the bottom end of the valve seat 3 can press the peripheral portion 412, so that at least part of the diaphragm member 41 is limited. In other words, the valve seat 3 includes a second protrusion 37, the second protrusion 37 extends in a direction away from the core assembly 2 along an axial direction of the solenoid valve 100, the second protrusion 37 is formed at a bottom end of the valve seat 3, and the second protrusion 37 is distributed along a circumferential direction of the valve seat 3; the valve body 5 includes a second mating portion 54, at least part of the inner wall of the valve body 5 includes a wall of the second mating portion 54, the second mating portion 54 and the second protrusion 37 are located at two sides of the diaphragm member 41 along the axial direction of the solenoid valve 100, after the valve body 5 is fixedly connected with the valve seat 3, the second protrusion 37 and the second mating portion 54 can limit the peripheral portion 412 of the diaphragm member 41, in this embodiment, the valve body 5 is fixedly connected with the valve seat 3 through threads, so that the peripheral portion 412 of the diaphragm member 41 is limited, and the diaphragm assembly 4 can act regularly along the axial direction of the solenoid valve 100 to open or close the solenoid valve 100.

Referring to fig. 2, 3 and 5, the solenoid valve 100 comprises an inlet chamber 52 and an outlet chamber 53, the diaphragm member 41 has a second bore 413, the solenoid valve 100 has a valve chamber 102, the wall of the valve chamber 102 comprises at least part of the wall of the valve seat 3 and at least part of the wall of the diaphragm assembly 4, in the closed state of the solenoid valve 100, the inlet chamber 52 communicates with the valve chamber 102 through the second bore 413 such that the inlet chamber 52 and the valve chamber 102 are both high pressure areas, the diaphragm assembly 4 does not act, the second bore 413 communicates with the valve chamber 102 and the inlet chamber 52, the second bore 413 is capable of balancing the pressure difference between the inlet chamber 52 and the valve chamber 102; in the valve open state of the solenoid valve 100, the first passage 35 and the second passage 36 are in communication, the valve chamber 102 is in communication with the first chamber 105, the first chamber 105 is in communication with the outlet chamber 53, such that the valve chamber 102 is depressurized toward the outlet chamber 53 through the second passage 36, such that the valve chamber 102 becomes a low pressure area, such that the pressure in the inlet chamber 52 is greater than the pressure in the valve chamber 102, a pressure difference occurs across the diaphragm assembly 4, such that the diaphragm assembly 4 moves axially upward along the solenoid valve 100, such that the inlet chamber 52 and the outlet chamber 53 of the solenoid valve 100 are in communication.

In the radial direction of the solenoid valve 100, the second hole 413 is located closer to the pressing piece 43 than the outer peripheral portion 412, or the second hole 413 is located between the outer peripheral portion 412 of the diaphragm member 41 and the recess 411 of the diaphragm member 41. Specifically, the diaphragm member 41 includes a curved portion 415, and the curved portion 415 is located between the diaphragm member 41 and the concave portion 411 of the diaphragm member 41 in the direction from the axis of the solenoid valve 100 to the outer circumference of the diaphragm member 41; in the axial direction of the solenoid valve 100, the bent portion 415 protrudes toward the valve seat 3, and a second hole 413 is formed in the wall of the bent portion 415, the second hole 413 penetrates the bent portion 415, and the second hole 413 is capable of communicating the valve chamber 102 and the inlet chamber 52. In the state that the diaphragm member 41 is in the valve opening or closing state, the second hole portion 413 is always located at one side of the pressing member 43 along the radial direction of the solenoid valve 100, so that as the diaphragm member 41 deforms, the second hole portion 413 is always located at one side of the pressing member 43, the possibility that the second hole portion 413 is blocked by the pressing member 43 can be reduced, and the function of balancing the pressure of the second hole portion 413 is not disabled.

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

Claims (9)

1. The utility model provides a solenoid valve (100), its characterized in that includes diaphragm subassembly (4), diaphragm subassembly (4) include diaphragm part (41) and locating part (42), locating part (42) are including a plurality of convex parts (421), along the radial of solenoid valve (100), adjacent convex part (421) interval sets up, convex part (421) with diaphragm part (41) butt, convex part (421) are followed the circumference extension of locating part (42), follow the axis of solenoid valve (100) extremely the periphery direction of locating part (42), each convex part (421) are followed the height reduction of the axial of solenoid valve (100).

2. The solenoid valve (100) of claim 1, wherein the diaphragm member (41) includes a recess (411), the protrusion (421) being located in a cavity of the recess (411), the recess (411) mating with the protrusion (421), the recess (411) abutting the protrusion (421).

3. The solenoid valve (100) of claim 2, wherein the stopper (42) includes a gentle portion (422), the gentle portion (422) being away from an axis of the solenoid valve (100) with respect to a convex portion (421) of the stopper (42) in a radial direction of the solenoid valve (100), the gentle portion (422) being directed toward the diaphragm member (41), the gentle portion (422) being in contact with the diaphragm member (41).

4. A solenoid valve (100) according to claim 3, wherein said diaphragm assembly (4) comprises a hold-down element (43), said hold-down element (43) limiting said diaphragm member (41) in an axial direction of said solenoid valve (100), said hold-down element (43) being in limiting connection with said limiting element (42); along the axial direction of the electromagnetic valve (100), at least part of the diaphragm component (41) is positioned between the pressing piece (43) and the limiting piece (42).

5. The solenoid valve (100) of claim 4, wherein the retainer (42) has a first aperture (425), the hold-down member (43) includes a boss (431), at least a portion of a bottom wall of the hold-down member (43) includes a wall of the boss (431), the first aperture (425) receives the boss (431), and the first aperture (425) is in interference fit with the boss (431).

6. The solenoid valve (100) of claim 4, wherein the hold-down member (43) includes a boss (431), at least a portion of a bottom wall of the hold-down member (43) includes a wall of the boss (431), the boss (431) includes a stopper (4311), the stopper (4311) is configured to stopper the stopper (42) in an axial direction of the solenoid valve (100), and an outer diameter of the stopper (4311) is larger than an inner diameter of the stopper (42); along the axial direction of the electromagnetic valve (100), the limiting part (4311) is far away from the diaphragm component (41) relative to the limiting piece (42).

7. The solenoid valve (100) according to claim 5 or 6, wherein the diaphragm member (41) comprises a peripheral circular portion (412), the peripheral circular portion (412) being distributed along the circumference of the diaphragm member (41); the electromagnetic valve (100) comprises a valve body (5) and a valve seat (3), and the valve body (5) is fixedly connected with the valve seat (3); the peripheral round part (412) is in contact with the valve body (5), the peripheral round part (412) is in contact with the valve seat (3), the peripheral round part (412) is positioned between the valve body (5) and the valve seat (3) along the axial direction of the electromagnetic valve (100), and the diaphragm assembly (4) can act along the axial direction of the electromagnetic valve (100) to open or close the electromagnetic valve (100).

8. The solenoid valve (100) of claim 7, wherein the diaphragm member (41) includes a second bore portion (413), the solenoid valve (100) including an inlet chamber (52) and a valve chamber (102), the wall of the valve chamber (102) including at least a portion of the wall of the valve seat (3) and at least a portion of the wall of the diaphragm assembly (4), the second bore portion (413) being capable of communicating with the inlet chamber (52) and the valve chamber (102).

9. The solenoid valve (100) of claim 8, wherein the second bore portion (413) is adjacent to the hold-down member (43) with respect to the outer peripheral portion (412) in a radial direction of the solenoid valve (100), the second bore portion (413) being located on one side of the hold-down member (43) in a valve-open or valve-closed state of the diaphragm member (41).

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