CN210566265U

CN210566265U - Solenoid valve and solenoid valve subassembly

Info

Publication number: CN210566265U
Application number: CN201920872343.5U
Authority: CN
Inventors: 不公告发明人
Original assignee: Hangzhou Sanhua Research Institute Co Ltd
Current assignee: Zhejiang Sanhua Intelligent Controls Co Ltd
Priority date: 2019-06-05
Filing date: 2019-06-11
Publication date: 2020-05-19
Anticipated expiration: 2029-06-11
Also published as: CN210566562U

Abstract

The utility model provides an electromagnetic valve and electromagnetic valve assembly, includes the valve supporting seat, and the valve supporting seat includes connecting portion and intercommunication portion, and the relative intercommunication portion of connecting portion is close to coil pack, and the electromagnetic valve passes through connecting portion to be connected with other parts, is favorable to fast assembling electromagnetic valve and other parts to be favorable to improving the packaging efficiency of electromagnetic valve and electromagnetic valve assembly.

Description

Solenoid valve and solenoid valve subassembly

Technical Field

The utility model relates to a vehicle spare part field, concretely relates to solenoid valve and solenoid valve assembly.

Background

In the field of vehicle parts, electromagnetic valves are commonly used for opening and closing a flow path of an air conditioning system. The electromagnetic valve is assembled with the corresponding parts of the air conditioning system into a whole.

SUMMERY OF THE UTILITY MODEL

The utility model provides a solenoid valve and solenoid valve assembly is favorable to realizing the fast assembly of solenoid valve.

A solenoid valve comprises a valve supporting seat, an iron core assembly, a valve assembly and a coil assembly, wherein the iron core assembly comprises a static iron core, a movable iron core and a sleeve, the coil assembly is sleeved on the periphery of the sleeve, and at least part of the iron core assembly is positioned in the sleeve; the valve supporting seat comprises a first mounting part, at least part of the valve assembly is located in a cavity formed by the first mounting part, the valve assembly is fixedly connected with the first mounting part, the electromagnetic valve further comprises a first cavity, the wall forming the first cavity at least comprises the inner wall of the valve supporting seat, the valve supporting seat comprises a connecting part and a communicating part, the communicating part is far away from the coil assembly compared with the connecting part, the communicating part comprises a first channel, a second channel and a first valve port, the first channel is communicated with the first cavity, a first opening of the first channel is formed in the outer wall of the communicating part, and the second channel can be communicated with the first cavity through the first valve port; the connecting part can enable the electromagnetic valve to be detachably connected with the mounting table; the solenoid valve further comprises a first groove, the first groove is circumferentially arranged along the side wall of the valve supporting seat, the first groove is arranged closer to the coil assembly than the communication part along the axis direction of the first mounting part, the solenoid valve further comprises a first sealing element, and at least part of the first sealing element is positioned in the first groove;

the solenoid valve still includes the second recess, the second recess form in the outer wall of intercommunication portion, follow the outer wall of intercommunication portion becomes circumference setting, along the axis direction of first installation department, the second recess is than the first opening of first passageway is kept away from the coil pack, the solenoid valve still includes the second sealing member, at least part the second sealing member is located the second recess.

A solenoid valve assembly comprises a solenoid valve and an installation platform, wherein the solenoid valve comprises a valve supporting seat, an iron core assembly, a valve assembly and a coil assembly, the iron core assembly comprises a static iron core, a movable iron core and a sleeve, the sleeve is sleeved with the coil assembly, and the coil assembly and the iron core assembly are relatively fixed; the valve supporting seat comprises a first mounting part, at least part of the valve assembly is located in a cavity formed by the first mounting part, the valve assembly is fixedly connected with the first mounting part, the electromagnetic valve further comprises a first cavity, the wall forming the first cavity at least comprises the inner wall of the valve supporting seat, the valve supporting seat comprises a connecting part and a communicating part, the communicating part is far away from the coil assembly compared with the connecting part, the communicating part comprises a first channel, a second channel and a first valve port, the first channel is communicated with the first cavity, and the second channel can be communicated with the first cavity through the first valve port; the electromagnetic valve is relatively fixed with the mounting table through the connecting part.

The solenoid valve includes the valve supporting seat, and the valve supporting seat includes connecting portion and intercommunication portion, and connecting portion are close to coil pack than the intercommunication portion, and the solenoid valve passes through connecting portion and the mount table realizes dismantling to be connected, is favorable to fast assembling solenoid valve and mount table to be favorable to improving the packaging efficiency of solenoid valve.

Drawings

FIG. 1 is a perspective view of a solenoid valve;

3 FIG. 32 3 is 3 a 3 schematic 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 the 3 line 3 A 3- 3 A 3 of 3 FIG. 31 3; 3

FIG. 3 is an enlarged schematic view of the structure of the first embodiment of section B of FIG. 2;

FIG. 4 is an enlarged view of the structure of the portion C in FIG. 2;

FIG. 5 is a schematic perspective view of the valve support seat of FIG. 2;

FIG. 6 is a cross-sectional view of the valve support seat and seal assembly of FIG. 2;

FIG. 7 is a schematic view of a fourth embodiment of a solenoid valve and mounting station;

FIG. 8 is an enlarged view of the structure of the portion G in FIG. 7;

FIG. 9 is an enlarged view of the portion I of FIG. 7;

FIG. 10 is a cross-sectional structural view of the piston assembly of FIG. 2;

FIG. 11 is a schematic view of a first embodiment of a solenoid valve and mounting station;

FIG. 12 is an enlarged view of the structure of the portion D in FIG. 11;

FIG. 13 is an enlarged view of the structure of the portion K in FIG. 11;

FIG. 14 is a schematic view of a second embodiment of a solenoid valve and mounting station;

FIG. 15 is an enlarged view of a portion E of FIG. 14;

FIG. 16 is an enlarged view of a portion of the J-shaped portion of FIG. 14;

FIG. 17 is a schematic view of a third embodiment of a solenoid valve and mounting station;

FIG. 18 is an enlarged view of a portion of the structure of portion F of FIG. 17;

FIG. 19 is a schematic view of a fifth embodiment of a solenoid valve and mounting station;

FIG. 20 is an enlarged view of a portion H of FIG. 19;

FIG. 21 is a schematic view of a sixth embodiment of a solenoid valve and mounting station;

FIG. 22 is a schematic structural view of a second embodiment of section B of FIG. 2;

fig. 23 is a schematic structural view of a third embodiment of the portion B in fig. 2.

Detailed Description

In the following description of the embodiment, for the sake of easy understanding, terms indicating directions (for example, "upper", "lower", "upper end face", and the like) are appropriately used, and the term is not intended to limit the present invention, and it is a matter of course that in a normally closed type solenoid valve, when the solenoid valve is opened by energization, the moving direction of the movable iron core is "upper", and when the solenoid valve is closed by deenergization, the moving direction of the movable iron core is "lower", and in a normally open type solenoid valve, the moving direction of the movable iron core when the solenoid valve is opened by energization.

The present invention will be further described with reference to the accompanying drawings and the following detailed description. Referring to fig. 1, 2 and 5, the solenoid valve 100 includes a valve supporting base 1, a coil assembly 2, a core assembly 3 and a valve assembly 4, the valve supporting base 1 includes a first mounting portion 10, at least a portion of the valve assembly 4 is located in a cavity formed by the first mounting portion 10, and is fixed relative to the first mounting portion 10, and in particular, the valve assembly 4 includes a valve seat 43, at least a portion of the valve seat 43 being located in the cavity formed by the first mounting portion 10, and is fixedly connected with the first mounting portion 10 and sealed at the connection position of the two, and the fixing mode can be welding or screw thread fixing, in the present embodiment, the valve seat 43 is screwed to the first mounting portion 10, and specifically, the valve seat 43 has a first external thread 431, the first mounting portion 10 has a first internal thread 102, the valve seat 43 is fixedly connected to the first mounting portion 10 by the first internal thread 102 and the first external thread 431. The electromagnetic valve further comprises a sleeve 34, at least part of the iron core assembly 3 is located on the inner periphery of the sleeve 34, specifically, the iron core assembly 3 comprises a movable iron core 31 and a stationary iron core 32, one end of the sleeve 34 extends into a hole formed by a valve seat 43 and is relatively fixed with the valve seat 43, at least part of the stationary iron core 32 is arranged in the sleeve 34 and is relatively fixed with the sleeve 34, at least part of the movable iron core 31 is arranged in the sleeve 34 and can move relative to the sleeve 34, and the movable iron core 31 is closer to the valve seat 43 than the stationary iron core 32. The coil assembly 2 includes a coil portion 21 and a magnetizer 22, the coil portion 21 is fixed to the magnetizer 22 in a clamping manner, the coil portion 21 includes a coil and an injection molding portion, the coil and the injection molding portion are integrally formed by injection molding, and of course, the coil and the injection molding portion can be respectively formed and then assembled into a whole. The periphery of sleeve pipe 34 is located to coil pack 2 cover, and in a specific embodiment, coil pack 2 passes through screw 50 and quiet iron core 32 thread tightening, and of course, coil pack can also realize through joint spare with the fixed of iron core subassembly. The iron core assembly 3 further comprises a first sealing gasket 33 and a first pressing sheet 35, wherein the first sealing gasket 33 is fixed at the lower end part of the movable iron core 31 through the first pressing sheet 35, so that on one hand, sealing between the valve assembly and the movable iron core is facilitated, and on the other hand, noise generated by impact between the movable iron core and the valve assembly when the electromagnetic valve is opened or closed is facilitated to be reduced.

The solenoid valve 100 comprises a first chamber 101, and the wall forming the first chamber 101 comprises at least the inner wall of the valve supporting seat 1, or alternatively, the wall forming the first chamber 101 further comprises the bottom wall of the valve seat 43, as shown in fig. 2. Referring to fig. 5 and 6, the valve supporting base 1 includes a connecting portion 17 and a communicating portion 18, and the communicating portion 18 is located below the connecting portion 17, or the communicating portion 18 is located farther from the coil block 2 than the connecting portion 17. The connection portion 17 is formed on the outer wall of the valve supporting base 1, and the connection portion 17 may be formed with an external thread, and the solenoid valve 100 is connected to other components through the external thread of the connection portion 17. The communication part 18 includes a first channel 11, a second channel 12 and a first valve port 13, wherein the first channel 11 penetrates through a side part of the communication part 18, the first channel 11 is formed with two openings at the side part of the communication part 18, wherein the first opening 111 of the first channel is located at an outer wall of the communication part 18, the other opening is located at an inner wall of the communication part 18, or the other opening is located at a wall forming the first chamber 101, and the first channel 11 is communicated with the first chamber 101. The second channel 12 is formed in the bottom of the communicating portion 18, the second channel 12 is opened in the lower wall of the bottom of the communicating portion 18, the first valve port 13 is formed in the upper wall of the bottom of the communicating portion 18, the second channel 12 can communicate with the first valve port 13, and the second channel 12 can communicate with the first chamber 101. Of course, the side of the communication portion 18 may be formed with a plurality of first passages 11 to enhance the connectivity of the outside of the solenoid valve with the first chamber 101. In the present embodiment, the communication portion 18 has four first passages 11, and the first passages 11 are uniformly arranged in the circumferential direction of the communication portion 18.

Referring to fig. 5 and 6, in the present embodiment, the valve supporting base 1 further includes a first end surface 151, along the axial direction of the first mounting portion 10, the first end surface 151 is closer to the coil assembly 2 than the connecting portion 17 and faces the coil assembly 2, the valve supporting base 1 has a first concave portion 153, and the first concave portion 153 is recessed relative to the first end surface 151. Accordingly, referring to fig. 2, the magnetic conductor 22 has a first protrusion 221, the first protrusion 221 protrudes toward the first end surface 151 relative to the other portion of the magnetic conductor 22, the first protrusion 221 is located in the first recess 153, and the first protrusion 221 and the first recess 153 are matched with each other, so that the coil assembly 2 is favorably positioned and is convenient to mount.

Referring to fig. 2, 5 and 6, the valve supporting seat 1 includes a first groove 16, the first groove 16 is closer to the coil assembly 2 than the connecting portion 17 along the axial direction of the first mounting portion, specifically, the first groove 16 is located between the first end surface 151 and the connecting portion 17, the first groove 16 is circumferentially disposed along the sidewall of the valve supporting seat 1, further, the solenoid valve 100 further includes a first sealing member 60, at least a portion of the first sealing member 60 is disposed in the first groove 16, after the solenoid valve 100 is mounted with other components, the other components may be a mounting table 200, the valve supporting seat 1 and the mounting table 200 press the first sealing member 60, and thus, the mounting table 200 and the valve supporting seat 1 are sealed. The valve supporting seat 1 further includes a second groove 19, and the second groove 19 is provided in the outer wall of the communicating portion 18 and is circumferentially provided along the outer wall of the communicating portion.

In a first embodiment, referring to fig. 11 and 12, a first groove 16 is located between the connection portion 17 and the first channel 11, the first groove 16 is recessed relative to the connection portion 17, or an outer diameter of a bottom wall of the first groove 16 is smaller than an outer diameter of the connection portion 17, the first groove 16 includes a first bottom wall 161 and a first upper side wall 162, the first sealing member 60 is disposed around the first bottom wall 161, wherein the first upper side wall 162 connects the first bottom wall 161 and the connection portion 17, accordingly, the mounting table 200 is formed with a second fitting portion 201, the second fitting portion 201 has a first flange 2011, the first flange 2011 is raised relative to other portions of the second fitting portion 201, an inner diameter of the first flange 2011 is smaller than an outer diameter of the connection portion 17, the first sealing member 60 is located in the first groove 16, the first flange 2011 of the second fitting portion 201 and the first upper side wall 162 can provide a support for the first sealing member 60, when the solenoid valve 100 is mounted with the mounting table 200, the first seal member 60 is prevented from slipping off, the mounting efficiency is improved, and the sealing performance can be enhanced.

Referring to fig. 14 and fig. 15, the second embodiment mainly differs from the first embodiment in that: the second fitting portion 201 is not provided with the first flange 2011; the first groove 16 includes a first upper sidewall 162 and a first lower sidewall 163, wherein the first upper sidewall 162 connects the first bottom wall 161 and the connecting portion 17, the first lower sidewall 163 is disposed opposite to at least a portion of the first upper sidewall 162, and the first upper sidewall 162 and the first lower sidewall 163 can prevent the first sealing member 60 from sliding off when being mounted, thereby improving the mounting efficiency.

In a third embodiment, referring to fig. 17 and 18, the valve supporting seat 1 further includes a supporting portion 15, the supporting portion 15 is closer to the coil assembly 2 than the connecting portion 17 along the axial direction of the first mounting portion 10, the first end surface 151 is located on the upper end surface of the supporting portion 15, and the outer diameter of the supporting portion 15 is substantially equal to the outer diameter of the connecting portion 17. The first groove 16 is located between the support portion 15 and the connection portion 17, the first groove 16 is recessed relative to the side wall of the support portion 15, the first sealing member 60 is disposed in the first groove 16, the first groove 16 has a first upper side wall 162, a first lower side wall 163 and a first bottom wall 161, the first lower side wall 163 connects the first bottom wall 161 and the connection portion 17, the first sealing member 60 is disposed around the first bottom wall 161, at least a portion of the first upper side wall 162 and the first lower side wall 163 are disposed opposite to each other, and the first upper side wall 162 and the first lower side wall 163 provide support for the first sealing member 60 and prevent the first sealing member 60 from sliding off.

In the fourth embodiment, referring to fig. 7 and 8, the second matching portion 201 of the mounting platform 200 includes a first step portion 2202, and a platform wall of the first step portion 2202 is located between the first upper side wall 162 and the first lower side wall 163 along the axial direction of the first mounting portion 10, so that the first upper side wall 162 and the platform wall of the first step portion form a support for the first sealing member 60, so as to prevent the first sealing member 60 from sliding off, and further improve the sealing performance. Further, the outer diameter of the support portion 15 is larger than the outer diameter of the connecting portion 17, so that the support portion 15 abuts against the mount 200 when the solenoid valve 100 is mounted, and the solenoid valve 100 can be restricted. The first groove 16 may be disposed between the first channel 11 and the connecting portion 17, or between the connecting portion 17 and the supporting portion 15, and of course, the first groove 16 may also be disposed between the first channel 11 and the connecting portion 17, or between the connecting portion 17 and the supporting portion 15, and sealing members are disposed in both the first grooves to enhance the sealing between the solenoid valve 100 and the mounting block 200.

Referring to the fifth embodiment shown in fig. 19 and 20, the fifth embodiment mainly differs from the third embodiment in that: the outer diameter of the support portion 15 is larger than that of the connecting portion 17, or the support portion 15 is raised relative to the connecting portion 17; a first groove 16 is formed in the support portion 15, specifically, the first groove 16 is recessed relative to the lower end surface of the support portion 15, or an opening of the first groove 16 is formed in the lower end surface of the support portion 15, a first sealing member 60 is disposed in the first groove 16, and the first sealing member 60 abuts against the mounting table 200, so as to seal the solenoid valve 100 and the mounting table 200; it will be appreciated that the mounting block 200 may also be provided with a recess for receiving the first seal member, and accordingly, the lower end surface of the support portion 15 may be flat or provided with a first recess, which will not be described in detail.

The second groove 19 of the valve supporting seat 1 may be circumferentially disposed along the sidewall of the communicating portion 18, and the second groove 19 is further away from the coil assembly 2 than the first channel 11 along the axial direction of the first mounting portion 10, and the solenoid valve 100 further includes a second sealing member 70, at least a portion of the second sealing member 70 is disposed in the second groove 19, after the solenoid valve 100 is mounted with other components, the other components may be the mounting table 200, and the valve supporting seat 1 and the mounting table 200 press the second sealing member 70 to form a seal between the mounting table 200 and the valve supporting seat 1, so that the fluid of the first channel 11 is communicated with the second channel 12 only through the first valve port 13. In the first embodiment, referring to fig. 7 and 9, the second groove 19 is recessed with respect to the side wall of the communication portion 18, the second groove 19 is located between the first channel 11 and the lower wall of the bottom of the communication portion in the axial direction of the first mounting portion 10, the second groove 19 includes a second bottom wall 191 and a second upper side wall 192, wherein the second bottom wall 191 connects the second upper side wall 192 and the lower wall of the bottom of the communication portion, accordingly, the mounting table 200 is formed with a third fitting portion 202, the third fitting portion 202 has a second flange 2021, the second flange 2021 is raised with respect to the rest of the third fitting portion 202, the inner diameter of the second flange 2021 is smaller than the outer diameter of the communication portion 18, the second seal 70 is located in the second groove 19, specifically, the second seal 70 is disposed around the second bottom wall 191, the second flange 2021 of the third fitting portion 202 and the second upper side wall 192 can provide support for the second seal 70, when the solenoid valve 100 is mounted, the second seal 70 is prevented from slipping off, the mounting efficiency is improved, and the sealing performance can be enhanced. Referring to fig. 14 and fig. 16, a second embodiment mainly differs from the first embodiment in that: the third fitting portion 202 is not provided with the second flange 2021; the second groove 19 includes a second upper sidewall 192 and a second lower sidewall 193, wherein the second upper sidewall 192 connects the second bottom wall 191 and the sidewall of the communication portion, the second lower sidewall 193 is disposed opposite to at least a portion of the second upper sidewall 192, and the second upper sidewall 192 and the second lower sidewall 193 can prevent the second seal 70 from slipping off when being installed, thereby improving the installation efficiency.

In another embodiment, referring to fig. 11 and 13, the second groove 19 is recessed with respect to the lower wall of the bottom of the communication portion 18, or the opening of the second groove 19 is formed in the lower wall of the bottom of the communication portion 18, the second sealing member 70 is disposed in the second groove 19, and the second sealing member 70 abuts against the mounting table 200, so as to seal the solenoid valve 100 and the mounting table 200; it will be appreciated that the mounting station 200 may also be provided with a recess for placing the second seal 70, and accordingly the lower wall of the bottom of the communication portion 18 may be flat or also provided with a second recess, which will not be described in detail.

In the present technical solution, the electromagnetic valve 100 is mounted on another component, and the electromagnetic valve 100 is detachably connected with another component through a connecting portion, in this embodiment, the another component is a mounting table 200, referring to fig. 7, a second external thread 171 is formed on the connecting portion 17 of the valve supporting seat, a second matching portion 201 of the mounting table 200 is matched with the connecting portion 17, a second internal thread 2002 is formed on the second matching portion 201, the second internal thread 2002 is matched with the second external thread 171 of the connecting portion, and the electromagnetic valve 100 is mounted on the mounting table 200 under the action of the second internal thread 2002 and the second external thread 171, so that the mounting step can be simplified, the operation is simple, the electromagnetic valve 100 is quickly mounted, and the maintenance and replacement of the electromagnetic valve 100 are facilitated; it is understood that the solenoid valve 100 and the mounting platform may be fixedly connected by different methods such as welding.

In a sixth embodiment of the solenoid valve and the mounting table, referring to fig. 21, the main difference from the embodiment shown in fig. 7 is that: the connecting portion is formed into a compression nut 80, the compression nut 80 comprises a first through hole 801, the valve supporting seat is sleeved with the compression nut 80, the lower end face of the compression nut 80 is abutted to the upper end face of the valve supporting seat 1, a third external thread 802 is formed on the periphery of the compression nut 80, the second matching portion 201 is matched with the compression nut 80, a third internal thread 2003 is formed on the second matching portion 201, the third internal thread 2003 is matched with the third external thread 2003 of the compression nut 80, the electromagnetic valve 100 is installed on the installation table 200 under the action of the third internal thread 2003 and the third external thread 802, the installation steps can be simplified, the operation is simple, and the maintenance and the replacement of the electromagnetic valve are facilitated.

Referring to fig. 2 and 10 in combination, the valve assembly 4 includes a piston assembly 41, the valve seat 43 has a guide portion 432, a portion of the piston assembly 41 is located in a cavity formed by the guide portion when the piston assembly 41 is actuated, the piston assembly 41 has a first mating portion 411, and the first mating portion 411 is in sliding contact with the guide portion 432, so that the piston assembly 41 performs axial movement along the guide portion 432, and the piston assembly is prevented from off-axis movement. In another embodiment, the valve assembly 4 further includes an elastic element 42, one end of the elastic element abutting against the piston assembly is defined as an upper end portion, one end of the elastic element abutting against the bottom wall of the communication portion is defined as a lower end portion, the upper end portion of the elastic element 42 abuts against the piston assembly 41, and the lower end portion of the elastic element 42 abuts against the upper wall of the communication portion 18.

Referring to fig. 10, the piston assembly 41 includes a first protrusion 413 and a first waist portion 412, the first waist portion 412 is located between the first fitting portion 411 and the first protrusion 413 in the axial direction of the first mounting portion, the first fitting portion 411 is closer to the coil assembly 2 than the first protrusion 413, the outer diameter of the first fitting portion 411 is larger than that of the first waist portion 412, the first protrusion 413 is protruded with respect to the first waist portion 412, or the outer diameter of the first protrusion 413 is larger than the outer diameter of the first waist part 412, the upper end 421 of the elastic element 42 is located at the peripheral side of the first waist part 412, the upper end of the elastic element 42 abuts against the lower end surface of the first fitting part 411, when the high-pressure working medium flows into the first chamber 101, the elastic element 42 is deformed due to the impact of the high-pressure medium on the elastic element 42, and at this time, the upper end of the elastic element 42 can be abutted against the upper end of the first protrusion 413; or, when the high-pressure working medium flows into the first chamber 101, the elastic element 42 is biased, the first protrusion 413 first contacts the elastic element 42, and the first protrusion 413 can limit the elastic element, so as to prevent the elastic element 42 from separating from the piston assembly 41; in this way, when the high-pressure working medium flows into the first chamber 101, it is possible to advantageously reduce the risk of the elastic member 42 falling off when the high-pressure working medium impacts the elastic member 42.

In this embodiment, referring to fig. 10, the piston assembly 41 further includes a second valve port 414, a second gasket 415, and a second pressing plate 416, wherein the second gasket 415 is fixed to the lower end of the piston assembly 41 through the second pressing plate 416; the second valve port 414 is formed at the upper end of the piston assembly 41, and when the plunger 31 moves axially, the first sealing gasket 33 can contact and/or separate from the second valve port 414, thereby opening or closing the second valve port 414, which facilitates the sealing between the piston assembly 41 and the second valve port 414.

Referring to fig. 3 and 10, the piston assembly 41 further includes a piston ring 418, the first fitting portion 411 includes a third groove 4112, the piston ring 418 is located in the third groove 4112, the piston ring 418 is in sliding contact with the guide portion 432, specifically, the guide portion 432 has a first side wall 4331, the first fitting portion 411 of the piston assembly has a second side wall 4111, the second side wall 4111 is along the circumference of the first fitting portion 411, and the second side wall 4111 is in sliding contact with the first side wall 4331. The first matching portion 411 further includes at least one fourth groove 4113, the fourth groove 4113 is disposed along the circumference of the first matching portion 411, in this embodiment, the first matching portion 411 includes two fourth grooves 4113, the fourth groove 4113 is recessed relative to the second side wall 4111, or an opening of the fourth groove is located on the second side wall 4111, the two fourth grooves are located on two sides of the third groove 4112, or along the axial direction of the first mounting portion 10, the third groove 4112 is located between the two fourth grooves 4113, because the piston assembly 41 slides along the guide portion, foreign impurities are easily generated, or the working medium contains foreign impurities, the fourth groove 4113 can contain foreign impurities in the working medium, which is beneficial to reducing the risk of blocking and abrasion of the piston ring 418, and is beneficial to reducing the risk of seizure of the piston assembly 41; of course, the guiding portion 43 may also be provided with one fourth groove, or a plurality of fourth grooves, the fourth groove may be an annular groove distributed along the circumferential direction, or may be in a shape of a segment of arc or a plurality of segments of arc, and the recessed shape of the fourth groove may be in different shapes such as triangle, square, trapezoid, and the like, see fig. 22 and 23 specifically. It will be appreciated that the fourth recess may also be provided in the guide portion, or both the guide portion and the first mating portion may be provided with the fourth recess.

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

Claims

1. A solenoid valve comprises a valve supporting seat, an iron core assembly, a valve assembly and a coil assembly, wherein the iron core assembly comprises a static iron core, a movable iron core and a sleeve, the coil assembly is sleeved on the periphery of the sleeve, and at least part of the iron core assembly is positioned in the sleeve; the valve supporting seat comprises a first mounting part, at least part of the valve assembly is located in a cavity formed by the first mounting part, the valve assembly is fixedly connected with the first mounting part, the electromagnetic valve further comprises a first cavity, the wall forming the first cavity at least comprises the inner wall of the valve supporting seat, the valve supporting seat comprises a connecting part and a communicating part, the communicating part is far away from the coil assembly compared with the connecting part, the communicating part comprises a first channel, a second channel and a first valve port, the first channel is communicated with the first cavity, a first opening of the first channel is formed in the outer wall of the communicating part, and the second channel can be communicated with the first cavity through the first valve port; the connecting part can enable the electromagnetic valve to be detachably connected with the mounting table; the solenoid valve further comprises a first groove, the first groove is circumferentially arranged along the side wall of the valve supporting seat, the first groove is arranged closer to the coil assembly than the communication part along the axis direction of the first mounting part, the solenoid valve further comprises a first sealing element, and at least part of the first sealing element is positioned in the first groove;

2. The electromagnetic valve according to claim 1, wherein the first groove is located between the connecting portion and the communicating portion in an axial direction of the first mounting portion, the first groove being recessed with respect to the connecting portion; the first groove comprises a first bottom wall and a first upper side wall, the first upper side wall is connected with the first bottom wall and the connecting part, and the first sealing element is arranged around the first bottom wall; or, the first groove further comprises a first lower side wall, the first upper side wall is connected with the first bottom wall and the connecting portion, the first sealing element is arranged around the first bottom wall, and at least part of the first upper side wall is arranged opposite to the first lower side wall.

3. The electromagnetic valve according to claim 1 or 2, wherein the valve support base further includes a support portion that is closer to the coil block than the connection portion in an axial direction of a first mounting portion, the first groove is located between the support portion and the connection portion, the first groove is recessed with respect to the connection portion, and the first groove is recessed with respect to a side wall of the support portion; the first groove is provided with a first upper side wall, a first bottom wall and a first lower side wall, the first lower side wall is connected with the first bottom wall and the connecting part, the first sealing element is arranged around the first bottom wall, and at least part of the first upper side wall is opposite to the first lower side wall; or the outer diameter of the supporting part is larger than that of the connecting part, the first groove is formed in the supporting part, and the first groove is sunken relative to the lower end face of the supporting part.

4. The solenoid valve according to claim 1 or 2, characterized in that said second groove is located between the first opening of said first passage and the lower wall of the bottom of said communication portion, said second groove being recessed with respect to the side wall of said communication portion, said second groove comprising a second upper side wall and a second bottom wall, said second bottom wall connecting said second upper side wall and the lower wall of the bottom of said communication portion, said second seal being arranged around said second bottom wall; or, the second groove further comprises a second lower side wall, and at least part of the second upper side wall is arranged opposite to the second lower side wall.

5. The solenoid valve of claim 3 wherein the second groove is located between the first opening of the first passage and the lower wall of the bottom of the communication portion, the second groove being recessed relative to the side wall of the communication portion, the second groove including a second upper side wall and a second bottom wall connecting the second upper side wall and the lower wall of the bottom of the communication portion, the second seal being disposed around the second bottom wall; or, the second groove further comprises a second lower side wall, and at least part of the second upper side wall is arranged opposite to the second lower side wall.

6. The electromagnetic valve according to claim 1, 2 or 5, wherein the valve assembly further comprises a piston assembly and an elastic element, one end of the elastic element abutting against the piston assembly is defined as an upper end portion, one end of the elastic element abutting against an upper wall of the bottom of the communication portion is defined as a lower end portion, the upper end portion of the elastic element abuts against the piston assembly, and the lower end portion of the elastic element abuts against the upper wall of the bottom of the communication portion;

piston assembly includes first cooperation portion, first waist and first bellying, first cooperation portion is than first bellying is close to coil pack sets up, first waist is located first cooperation portion with between the first bellying, the external diameter of first cooperation portion is greater than the external diameter of first waist, first bellying is relative first waist is protruding, elastic element's upper end position is in the week side of first waist.

7. The electromagnetic valve according to claim 3, wherein the valve assembly further comprises a piston assembly and an elastic element, wherein one end of the elastic element abutting against the piston assembly is defined as an upper end portion, one end of the elastic element abutting against an upper wall of the bottom of the communication portion is defined as a lower end portion, the upper end portion of the elastic element abuts against the piston assembly, and the lower end portion of the elastic element abuts against the upper wall of the bottom of the communication portion;

8. The electromagnetic valve according to claim 4, wherein the valve assembly further comprises a piston assembly and an elastic element, one end of the elastic element abutting against the piston assembly is defined as an upper end portion, one end of the elastic element abutting against an upper wall of the bottom of the communication portion is defined as a lower end portion, the upper end portion of the elastic element abuts against the piston assembly, and the lower end portion of the elastic element abuts against the upper wall of the bottom of the communication portion;

9. The solenoid valve of claim 6 wherein said valve assembly comprises a valve seat comprising a guide having a first sidewall, said piston assembly comprises a piston ring, said first mating portion comprises a third groove, said piston ring is located in said third groove, said piston ring is in sliding contact with said first sidewall, said first mating portion has a second sidewall, said second sidewall is in sliding contact with said first sidewall; the guide portion and/or the first mating portion has at least one fourth groove.

10. The electromagnetic valve according to claim 1, characterized in that said first groove is located between said connection portion and said communication portion, said first groove being recessed with respect to said connection portion; the first groove comprises a first bottom wall and a first upper side wall, the first upper side wall is connected with the first bottom wall and the connecting part, and the first sealing element is arranged around the first bottom wall; or, the first groove further comprises a first lower side wall, the first upper side wall connects the first bottom wall and the connecting portion, the first sealing member is disposed around the first bottom wall, and at least a part of the first upper side wall is disposed opposite to the first lower side wall;

and/or, the valve supporting seat further comprises a supporting part, the supporting part is closer to the coil assembly than the connecting part along the axial direction of the first mounting part, the first groove is positioned between the supporting part and the connecting part, the first groove is sunken relative to the connecting part, and the first groove is sunken relative to the side wall of the supporting part; the first groove is provided with a first upper side wall, a first bottom wall and a first lower side wall, the first lower side wall is connected with the first bottom wall and the connecting part, the first sealing element is arranged around the first bottom wall, and at least part of the first upper side wall is arranged opposite to the first lower side wall; or the outer diameter of the supporting part is larger than that of the connecting part, the first groove is formed in the supporting part, and the first groove is sunken relative to the lower end face of the supporting part;

the second groove is formed in the lower wall of the bottom of the communication part; or the second groove is located between the first opening of the first channel and the lower wall of the bottom of the communication part, the second groove is recessed relative to the side wall of the communication part, the second groove comprises a second upper side wall and a second bottom wall, the second bottom wall is connected with the second upper side wall and the lower wall of the bottom of the communication part, and the second sealing element is arranged around the second bottom wall; or, the second groove further comprises a second lower side wall, and at least part of the second upper side wall is arranged opposite to the second lower side wall;

the valve component also comprises a piston component and an elastic element, wherein one end of the elastic element, which is abutted against the piston component, is defined as an upper end part, one end of the elastic element, which is abutted against the upper wall of the bottom of the first mounting part, is defined as a lower end part, the upper end part of the elastic element is abutted with the piston assembly, the lower end part of the elastic element is abutted with the upper wall of the bottom of the communicating part, the piston assembly includes a first mating portion, a first waist portion, and a first boss portion, the first mating portion being disposed closer to the coil assembly than the first boss portion, the first waist portion is located between the first matching portion and the first protruding portion, the outer diameter of the first matching portion is larger than that of the first waist portion, the first bulge part is bulged relative to the first waist part, and the upper end part of the elastic element is positioned on the periphery side of the first waist part;

the valve assembly includes a valve seat including a guide portion having a first sidewall, the piston assembly includes a piston ring, the first mating portion includes a third groove in which the piston ring is seated, the piston ring is in sliding contact with the first sidewall, the first mating portion has a second sidewall in sliding contact with the first sidewall; the guide portion and/or the first mating portion has at least one fourth groove.

11. A solenoid valve assembly comprises a solenoid valve and an installation platform, wherein the solenoid valve comprises a valve supporting seat, an iron core assembly, a valve assembly and a coil assembly, the iron core assembly comprises a static iron core, a movable iron core and a sleeve, the sleeve is sleeved with the coil assembly, and the coil assembly and the iron core assembly are relatively fixed; the valve supporting seat comprises a first mounting part, at least part of the valve assembly is located in a cavity formed by the first mounting part, the valve assembly is fixedly connected with the first mounting part, the electromagnetic valve further comprises a first cavity, the wall forming the first cavity at least comprises the inner wall of the valve supporting seat, the valve supporting seat comprises a connecting part and a communicating part, the communicating part is far away from the coil assembly compared with the connecting part, the communicating part comprises a first channel, a second channel and a first valve port, the first channel is communicated with the first cavity, and the second channel can be communicated with the first cavity through the first valve port; the electromagnetic valve is relatively fixed with the mounting table through the connecting part.

12. The solenoid valve assembly of claim 11 wherein the mounting block has a second mating portion having a second internal thread, the connecting portion being formed with a second external thread that is coupled to the second internal thread.

13. The solenoid valve assembly of claim 11, wherein the connecting portion includes a compression nut, the compression nut and the solenoid valve are separately disposed, the compression nut is sleeved on the solenoid valve, a lower end surface of the compression nut abuts against an upper end surface of the valve support seat, the compression nut forms a third external thread, the mounting table has a second fitting portion, the second fitting portion has a third internal thread, and the third external thread is connected with the third internal thread.