Electromagnetic valve, refrigeration equipment and automobile

Abstract

The utility model discloses an electromagnetic valve, refrigeration equipment and an automobile. The electromagnetic valve comprises a valve seat, a valve cover and a piston, the valve seat is provided with a first valve cavity and a valve port, the inner wall of the valve seat forms the cavity wall of the first valve cavity, the valve cover and the valve seat are connected to enclose the first valve cavity, the piston is arranged in the first valve cavity and can reciprocate in the first direction to close and open the valve port, and the electromagnetic valve is suitable for being in a communicated state when the piston opens the valve port. The piston is suitable for being in a disconnected state when the valve port is closed by the piston, and the piston is suitable for abutting against the cavity wall of the first valve cavity in the radial direction with the first direction as the axial direction. The piston abuts against the cavity wall of the first valve cavity in the radial direction, so that radial limiting of the piston is achieved, it is guaranteed that the piston can smoothly reciprocate in the first valve cavity in the axial direction, and compared with the prior art, under the condition that the outer diameter of the piston is the same, the radial size of the valve seat and the radial size of the valve deck can be smaller, and the service life of the valve deck is prolonged. Therefore, miniaturization and light weight of the electromagnetic valve are facilitated.

Description

Technical Field

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

[0002] New energy vehicles are developing in the direction of modularization, lightweight and high integration. Lightweight can reduce the weight of the vehicle, increase the driving range and improve the user's mileage anxiety. At present, major manufacturers are committed to the research of miniaturization and lightweight of solenoid valves. A solenoid valve that is lighter and smaller in size but can achieve the same function will be more competitive. The solenoid valve is smaller in size and occupies less space. Utility Model Content

[0003] The present application aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the present application proposes a solenoid valve.

[0004] To achieve the above object, the present application discloses a solenoid valve, which comprises:

[0005] A valve seat, wherein the valve seat is provided with a first valve cavity and a valve port, and an inner wall of the valve seat constitutes a cavity wall of the first valve cavity;

[0006] a valve cover, the valve cover and the valve seat being connected to enclose the first valve cavity; and

[0007] A piston, wherein the piston is arranged in the first valve cavity and can reciprocate along a first direction to close and open the valve port, the solenoid valve is suitable for being in a connected state when the piston opens the valve port, and the solenoid valve is suitable for being in a disconnected state when the piston closes the valve port, with the first direction being the axial direction, and the piston is suitable for abutting against the cavity wall of the first valve cavity along the radial direction.

[0008] In some embodiments of the present application, the maximum outer diameter of the piston along the radial direction is suitable for abutting against the cavity wall of the first valve cavity.

[0009] In some embodiments of the present application, a dimension of the valve cover along the axial direction is not greater than a dimension of the piston along the axial direction.

[0010] In some embodiments of the present application, the cavity wall of the first valve cavity includes a first cavity wall and a second cavity wall adjacent to each other, the first cavity wall and the second cavity wall form a cylindrical shape along the axial direction, the piston is suitable for abutting against the first cavity wall along the radial direction, and the valve cover is embedded in the second cavity wall.

[0011] In some embodiments of the present application, the outer wall of the valve seat is provided with an abutment end, an external thread and a first sealing ring, the solenoid valve is suitable for being connected to the target area through the external thread, suitable for being sealed and connected to the target area through the first sealing ring, and suitable for axial limitation by abutting the abutment end against the target area, and the abutment end is provided below the external thread and the first sealing ring.

[0012] In some embodiments of the present application, the first sealing ring is located above the external thread.

[0013] In some embodiments of the present application, the valve seat is provided with a first flow port, the first flow port penetrates the outer wall and the inner wall of the valve seat, and the first flow port is communicated with the first valve cavity.

[0014] In some embodiments of the present application, the valve seat is provided with a through hole, one end of the through hole forms the valve port, and the other end forms the second flow port.

[0015] In some embodiments of the present application, the first flow port is open along the radial direction; and / or the through hole extends along the axial direction.

[0016] In some embodiments of the present application, the piston is provided with a second sealing ring, and the piston is suitable for abutting against the edge of the valve port through the second sealing ring to close the valve port.

[0017] A second aspect of the present application discloses a refrigeration device, which comprises the above-mentioned solenoid valve.

[0018] A third aspect of the present application discloses a car, which includes the above-mentioned refrigeration device.

[0019] The technical solution of the present application realizes radial limitation of the piston by abutting the piston against the cavity wall of the first valve cavity in the radial direction, ensuring that the piston can smoothly reciprocate in the axial direction in the first valve cavity. Compared with the related technology, when the outer diameter of the piston is the same, the radial dimensions of the valve seat and the valve cover can be made smaller, which is conducive to the miniaturization and lightweight of the solenoid valve.

[0020] Other advantages of the present application will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other designs can be obtained based on the structures shown in these drawings without paying any creative work.

[0022] Figure 1 It is a cross-sectional view of a solenoid valve in the related art;

[0023] Figure 2 A cross-sectional view of a solenoid valve in some embodiments of the present application;

[0024] Figure 3 This is a cross-sectional view of a valve seat in some embodiments of the present application;

[0025] Figure 4 This is a cross-sectional view of a valve cover in some embodiments of the present application;

[0026] Figure 5 This is a schematic diagram of a refrigeration device in some embodiments of the present application;

[0027] Figure 6 This is a schematic diagram of a car in some embodiments of the present application.

[0028] Description of Figure Numbers:

[0029] Solenoid valve 100, valve seat 1000, first valve cavity 1100, opening 1110, inner wall / cavity wall 1200, first cavity wall 1210, second cavity wall 1220, outer wall 1300, first flow port 1400, through hole 1500, valve port 1510, second flow port 1520, abutment end 1600, external thread 1700, first sealing ring 1800, valve cover 2000, extension portion 2100, concave cavity 2200, piston 3000, second sealing ring 3100, housing 4000, static iron core 4100, moving iron core 4200, refrigeration equipment 200, automobile 300.

[0030] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0033] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] In addition, in this application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0035] In related technologies, such as Figure 1 As shown, the solenoid valve 100 includes a valve seat 1000, a valve cover 2000 and a piston 3000, the valve seat 1000 is provided with a first valve cavity 1100 and a valve port 1510, the piston 3000 is installed in the first valve cavity 1100, the valve cover 2000 is connected to the valve seat 1000 to enclose the first valve cavity 1100, and the periphery of the valve cover 2000 has an extension portion 2100 to be inserted into the first valve cavity 1100 and surround the piston 3000 (i.e., the valve cover 2000 is formed with a concave cavity 2100). 200, when the valve cover 2000 is connected to the valve seat 1000, the piston 3000 is embedded in the concave cavity 2200), the piston 3000 abuts against the extension 2100 of the valve cover 2000 along the radial direction, and the extension 2100 limits the piston 3000 in the radial direction. The solenoid valve 100 can control the piston 3000 to reciprocate in the concave cavity 2200 formed by the valve cover 2000 along the axial direction to open and close the valve port 1510. The solenoid valve 100 of this solution has a large radial dimension, which is not conducive to the miniaturization and lightness of the solenoid valve 100, and the present application makes improvements on this.

[0036] The first aspect of the present application provides a solenoid valve 100, combined with Figure 2 , Figure 3 and Figure 4 As shown, the solenoid valve 100 includes a valve seat 1000, a valve cover 2000 and a piston 3000. The valve seat 1000 is provided with a valve port 1510 and a first valve cavity 1100. The inner wall 1200 of the valve seat 1000 constitutes the cavity wall 1200 of the first valve cavity 1100. The valve cover 2000 is configured to be connected to the valve seat 1000 to enclose the first valve cavity 1100. The piston 3000 is disposed in the first valve cavity 1100 and can be moved in the first valve cavity 1100. The piston 3000 can reciprocate along the first direction in the first valve cavity 1100, so as to realize the opening and closing of the valve port 1510. When the piston 3000 realizes the opening of the valve port 1510, the solenoid valve 100 is in a connected state. When the piston 3000 realizes the closing of the valve port 1510, the solenoid valve 100 is in a disconnected state. The first direction is defined as the axial direction, and the piston 3000 abuts against the cavity wall 1200 of the first valve cavity 1100 along the radial direction.

[0037] The piston 3000 is radially limited by abutting against the cavity wall 1200 of the first valve cavity 1100 in the radial direction, ensuring that the piston 3000 can smoothly reciprocate in the axial direction in the first valve cavity 1100. Compared with the related art, when the outer diameter of the piston 3000 is the same, the radial dimensions of the valve seat 1000 and the valve cover 2000 can be made smaller, which is conducive to the miniaturization and lightweight of the solenoid valve 100.

[0038] Specifically, the valve seat 1000 is the main structural component of the solenoid valve 100, and the installation of other components of the solenoid valve 100 is realized, and the installation of the solenoid valve 100 to the target area (described in detail below) is also realized through the valve seat 1000. The valve seat 1000 can be made of metal material or other materials. In order to meet the different component installation requirements, the valve seat 1000 can be designed with a corresponding structure according to actual needs.

[0039] The valve seat 1000 is provided with a first valve cavity 1100 and a valve port 1510. Figure 3As shown, the valve seat 1000 is a hollow structure, and the inner wall 1200 of the valve seat 1000 encloses the first valve cavity 1100, that is, the inner wall of the valve seat 1000 constitutes the cavity wall 1200 of the first valve cavity 1100, and one end of the first valve cavity 1100 has an opening 1110. The valve port 1510 is arranged in the first valve cavity 1100 and is surrounded by the cavity wall 1200 of the first valve cavity 1100. The piston 3000 can be installed in the first valve cavity 1100 through the opening 1110. At this time, the valve port 1510 is located below the piston 3000, and the valve cover 2000 needs to be installed on the valve seat 1000 and be located at the position of the opening 1110, so as to realize the enclosure of the first valve cavity 1100, prevent the piston 3000 from falling out and prevent foreign matter from entering the first valve cavity 1100.

[0040] The solenoid valve 100 can control the piston 3000 to move in a first direction (axial direction, i.e. Figure 2 The piston 3000 reciprocates in the valve port 1510 (up and down directions), so that the piston 3000 can open the valve port 1510 and close the valve port 1510. When the piston 3000 opens the valve port 1510, the solenoid valve 100 is in a connected state, that is, the solenoid valve 100 can be connected to the corresponding flow path, and the fluid can enter the solenoid valve 100 and then flow out of the solenoid valve 100 when flowing. When the piston 3000 closes the valve port 1510, the solenoid valve 100 is in a disconnected state, that is, the solenoid valve 100 disconnects the corresponding flow path, and the fluid cannot enter the interior of the solenoid valve 100 and flow out. The cooperation between the piston 3000 and the valve port 1510 to achieve the connection and disconnection of the solenoid valve 100 can be referred to the relevant technology, which will not be repeated in detail here.

[0041] For example, the reciprocating motion of the piston 3000 in the axial direction is realized by the static iron core 4100 and the moving iron core 4200. The solenoid valve 100 includes a housing 4000, which is fixed on the valve cover 2000. The static iron core 4100 and the moving iron core 4200 are installed in the housing 4000 and are located above the piston 3000. A coil (not shown in the figure) surrounds the outside of the static iron core 4100. When the coil is energized, the static iron core 4100 attracts the moving iron core 4200, and the moving iron core 4200 moves upward, driving the piston 3000 to move upward (the moving iron core 4200 drives the piston 3000 to move upward can be The moving iron core 4200 drives the piston 3000 directly or indirectly), thereby opening the valve port 1510. When the coil is powered off, the stationary iron core 4100 no longer attracts the moving iron core 4200, and the moving iron core 4200 moves downward (for example, a reset spring can be set between the stationary iron core 4100 and the moving iron core 4200, and the reset spring drives the moving iron core 4200 to move downward), driving the piston 3000 to move downward (the moving iron core 4200 drives the piston 3000 to move downward, and the moving iron core 4200 can drive the piston 3000 directly or indirectly), thereby closing the valve port 1510.

[0042] As can be seen from the above, the piston 3000 needs to reciprocate along the axial direction. In order to ensure the smooth movement of the piston 3000 along the axial direction, the piston 3000 needs to be limited along the radial direction to prevent the piston 3000 from being skewed. In this embodiment, the piston 3000 is suitable for abutting against the cavity wall 1200 of the first valve cavity 1100 along the radial direction, that is, abutting against the inner wall 1200 of the valve seat 1000, so as to be limited in the radial direction. It can be seen that the limitation of the piston 3000 in the radial direction no longer needs to be achieved by the valve cover 2000. The piston 3000 and the valve cover 2000 are arranged along the axial direction and have no contact along the radial direction. In this way, the size of the solenoid valve 100 will be greatly reduced along the radial direction. For example, under the premise that the radial dimension of the piston 3000 remains unchanged, since the piston 3000 abuts against the cavity wall 1200 of the first valve cavity 1100 in the radial direction instead of the valve cover 2000, that is, there is no longer an extension portion 2100 of the valve cover 2000 between the cavity wall 1200 of the first valve cavity 1100 and the piston 3000, the radial dimension of the valve seat 1000 can be reduced, and correspondingly, the radial dimension of the valve cover 2000 can also be reduced, which will be beneficial to the miniaturization and lightweight of the solenoid valve 100. It can be understood that the piston 3000 is suitable for abutting against the cavity wall 1200 of the first valve cavity 1100 along the radial direction. The abutment may be performed only when the piston 3000 is deflected (i.e., there is no abutment when the piston 3000 is not skewed, and there is a certain gap, i.e., the piston 3000 and the cavity wall 1200 of the first valve cavity 1100 are in clearance fit), or the piston 3000 and the cavity wall 1200 of the first valve cavity 1100 may be continuously abutted together, so as to guide the movement of the piston 3000 along the axial direction.

[0043] Combination Figure 2 As shown, in some embodiments of the present application, the piston 3000 is suitable for abutting against the cavity wall 1200 of the first valve cavity 1100 at its maximum outer diameter along the radial direction, so that the structural design of the solenoid valve 100 is more convenient.

[0044] Specifically, as mentioned above, the piston 3000 needs to reciprocate along the axial direction. If the minimum outer diameter of the piston 3000 is abutted against the cavity wall 1200 of the first valve cavity 1100, the piston 3000 can be limited in the radial direction. However, the cavity wall 1200 of the first valve cavity 1100 corresponding to the maximum outer diameter of the piston 3000 needs to be designed to be larger, so that the position of the cavity wall 1200 of the first valve cavity 1100 corresponding to the maximum outer diameter and the minimum outer diameter of the piston 3000 will form a step, which is not conducive to the processing of the valve seat 1000. In this embodiment, the maximum outer diameter of the piston 3000 is abutted against the cavity wall 1200 of the first valve cavity 1100, so that the first valve cavity 1100 can be designed to be straight, which is more convenient for the processing of the valve seat 1000.

[0045] Combination Figure 2 As shown, in some embodiments of the present application, along the axial direction, the size of the valve cover 2000 is not larger than the size of the piston 3000 (i.e., when the valve cover 2000 and the piston 3000 are measured along the axial direction, the size of the valve cover 2000 is not larger than the size of the piston 3000), which is conducive to the miniaturization of the solenoid valve 100 in the axial direction, and further conducive to the lightweighting of the solenoid valve 100. Specifically, since the valve cover 2000 no longer needs to limit the piston 3000 in the radial direction, the size of the valve cover 2000 in the axial direction can be made smaller (relative to the related art). When the size of the valve cover 2000 in the axial direction is smaller, it will be conducive to the miniaturization of the solenoid valve 100 in the axial direction. It can be understood that along the axial direction, the size of the valve cover 2000 is not larger than the size of the piston 3000, which can be that the size of the valve cover 2000 in the axial direction is equal to the size of the piston 3000 in the axial direction, or the size of the valve cover 2000 in the axial direction is smaller than the size of the piston 3000 in the axial direction.

[0046] Combination Figure 3 As shown, in some embodiments of the present application, the cavity wall 1200 of the first valve cavity 1100 includes a first cavity wall 1210 and a second cavity wall 1220. The first cavity wall 1210 and the second cavity wall 1220 are adjacent to each other. Along the axial direction, the first cavity wall 1210 and the second cavity wall 1220 form a cylindrical shape. The piston 3000 abuts against the first cavity wall 1210 along the radial direction, and the valve cover 2000 is embedded in the second cavity wall 1220.

[0047] Specifically, the valve cover 2000 is connected to the valve seat 1000 and is located on the opening 1110 of the first valve cavity 1100, thereby enclosing the first valve cavity 1100. The valve cover 2000 may be provided with an external thread, and the opening 1110 of the first valve cavity 1100 is provided with an internal thread. The assembly of the valve cover 2000 and the valve seat 1000 is achieved by threaded connection. Generally speaking, the valve cover 2000 is embedded in the first valve cavity 1100, and the valve cover 2000 is flush with the valve seat 1000 (the valve cover 2000 does not protrude too much from the opening 1110 of the valve seat 1000). In this embodiment, the valve cover 2000 needs to be embedded in the second cavity wall 1220. When the piston 3000 reciprocates, the piston 3000 needs to abut against the first cavity wall 1210. Since the first cavity wall 1210 and the second cavity wall 1220 form a cylindrical shape, the linear stability of the piston 3000 when moving between the reciprocating limit positions can be ensured, and the matching accuracy requirements of the valve cover 2000 and the first valve cavity 1100 can be reduced. If the second cavity wall 1220 and the first cavity wall 1210 do not form a cylindrical shape, for example, the second cavity wall 1220 is trumpet-shaped, then the valve cover 2000 needs to be flush with the intersection between the first cavity wall 1210 and the second cavity wall 1220, and the matching accuracy requirements of the valve cover 2000 and the first valve cavity 1100 are relatively high.

[0048] Combination Figure 2 and Figure 3 As shown, in some embodiments of the present application, the outer wall 1300 of the valve seat 1000 is provided with a first sealing ring 1800, an external thread 1700 and an abutment end 1600. When the solenoid valve 100 is installed, the solenoid valve 100 is threadedly connected and fixed to the target area through the external thread 1700, and abuts against the target area through the abutment end 1600 to achieve axial limitation of the installation process, and a sealed connection between the solenoid valve 100 and the target area is achieved through the first sealing ring 1800.

[0049] Specifically, taking the solenoid valve 100 applied to the refrigeration equipment 200 as an example, the refrigeration equipment 200 includes an integrated module (not shown in the figure), the interior of the integrated module has a flow path, the flow path is for the medium to flow, and the integrated module also has an installation cavity (not shown in the figure, the installation cavity can be regarded as the target area, or the installation cavity and the surrounding parts of the installation cavity are regarded as the target area), and the solenoid valve 100 is installed in the installation cavity, so that the flow of the medium in the flow path can be controlled. The hole wall of the installation cavity is provided with an internal thread, and the external thread 1700 of the valve seat 1000 cooperates with the internal thread of the installation cavity to thread the solenoid valve 100 into the installation cavity. The installation cavity has a stopper (not shown in the figure). During the process of threading the solenoid valve 100, the stopper will abut against the abutment end 1600, thereby realizing the stop of the solenoid valve 100, prompting the installation in place, forming an axial limit, and the solenoid valve 100 abuts against the hole wall of the installation cavity through the first sealing ring 1800, so as to realize the sealed connection between the solenoid valve 100 and the hole wall of the installation cavity.

[0050] In this embodiment, the abutting end 1600 is disposed below the first sealing ring 1800 and the external thread 1700, so that the radial dimension of the valve seat 1000 at the location of the abutting end 1600 is greatly reduced, further facilitating the miniaturization of the electromagnetic valve 100 in the radial direction. It is understandable that. The solenoid valve 100 is screwed into the installation cavity by being inserted from top to bottom. For this reason, if the abutting end 1600 is located above the first sealing ring 1800 and the external thread 1700, the abutting end 1600 needs to be more protruding in the radial direction relative to the first sealing ring 1800 and the external thread 1700, so that it can abut against the end face of the installation cavity. In this way, the radial dimension of the valve seat 1000 at the position where the abutting end 1600 is located will be larger. If the abutting end 1600 is set below the first sealing ring 1800 and the external thread 1700, a stop portion can be set on the hole wall of the installation cavity. The abutting end 1600 does not need to be more protruding in the radial direction relative to the first sealing ring 1800 and the external thread 1700. In this way, the axial stop of the solenoid valve 100 can be achieved, and the radial dimension of the valve seat 1000 at the position where the abutting end 1600 is located can be reduced.

[0051] Furthermore, combined with Figure 2 As shown, in some embodiments of the present application, the first sealing ring 1800 is designed to be above the external thread 1700. It can be understood that the solenoid valve 100 is installed in the target area from top to bottom. Since the abutment end 1600 is located below the first sealing ring 1800 and the external thread 1700, and since the thread fit is not sealed, the first sealing ring 1800 is set above the external thread 1700. Finally, a sealed connection between the solenoid valve 100 and the target area can be achieved through the first sealing ring 1800.

[0052] Combination Figure 2 and Figure 3 As shown, in some embodiments of the present application, the solenoid valve 100 is matched with the flow path through the following scheme. The valve seat 1000 is provided with a first flow port 1400, and the first flow port 1400 is connected to the first valve cavity 1100, and the first flow port 1400 is connected to the flow path. Specifically, the first flow port 1400 runs through the inner wall 1200 and the outer wall 1300 of the valve seat 1000, so that the first flow port 1400 is connected to the first valve cavity 1100, the structure is simple, and the manufacturing difficulty of the valve seat 1000 is reduced. After the solenoid valve 100 is installed in the target area, the first flow port 1400 cooperates with the flow path. It can be understood that the first flow port 1400 can serve as both an outlet and an inlet. For example, the valve seat 1000 further has a second flow port 1520, which can serve as both an inlet and an outlet. When the first flow port 1400 serves as an inlet, the second flow port 1520 serves as an outlet. When the first flow port 1400 serves as an outlet, the second flow port 1520 serves as an inlet. The medium in the flow path can enter the first valve cavity 1100 from the first flow port 1400, and then pass through the valve port 1510 and the second flow port 1520 in sequence to discharge the solenoid valve 100. Alternatively, the medium in the flow path can pass through the second flow port 1520 and the valve port 1510 in sequence to enter the first valve cavity 1100, and finally pass through the first flow port 1400 to discharge the solenoid valve 100. In particular, the first flow port 1400 can be designed to be open in the radial direction, which can further simplify the structure of the valve seat 1000.

[0053] Furthermore, combined with Figure 3 As shown, in some embodiments of the present application, the valve seat 1000 is provided with a through hole 1500, a valve port 1510 is formed at one end of the through hole 1500, and a second flow port 1520 is formed at the other end. When the second flow port 1520 acts as an inlet, the medium in the flow path enters the through hole 1500 through the second flow port 1520, and then enters the first valve cavity 1100 through the valve port 1510. When the second flow port 1520 acts as an outlet (the second flow port 1520 in the figure acts as an outlet), the medium in the flow path enters the first valve cavity 1100 through the first flow port 1400, and then enters the through hole 1500 through the valve port 1510, and finally passes through the second flow port 1520 along the through hole 1500 to be discharged from the solenoid valve 100. In particular, since the piston 3000 reciprocates along the axial direction, the through hole 1500 is designed to extend along the axial direction, which is more convenient for the arrangement of the valve port 1510 and the second flow port 1520.

[0054] Combination Figure 2As shown, in some embodiments of the present application, the piston 3000 is provided with a second sealing ring 3100. During the reciprocating movement of the piston 3000, the piston 3000 drives the second sealing ring 3100 to follow the reciprocating movement. When the piston 3000 moves upward along the axial direction, the piston 3000 drives the second sealing ring 3100 and the valve port 1510 to separate, thereby opening the valve port 1510. When the piston 3000 moves downward along the axial direction, the piston 3000 drives the second sealing ring 3100 to abut against the edge of the valve port 1510, thereby closing the valve port 1510. It can be understood that sealing rings are also provided between the piston 3000 and the cavity wall 1200 of the first valve cavity 1100, and between the valve cover 2000 and the cavity wall 1200 of the first valve cavity 1100 to achieve a sealed connection.

[0055] The second aspect of the present application discloses a refrigeration device 200, such as Figure 5 As shown, the refrigeration device 200 includes the above-mentioned solenoid valve 100, the solenoid valve 100 includes a valve seat 1000, a valve cover 2000 and a piston 3000, the valve seat 1000 is provided with a valve port 1510 and a first valve cavity 1100, the inner wall 1200 of the valve seat 1000 is constituted as the cavity wall 1200 of the first valve cavity 1100, the valve cover 2000 is configured to be connected with the valve seat 1000, so as to enclose the first valve cavity 1100, and the piston 3000 is arranged in the first valve cavity 1100, and can be in the first valve cavity 1100. The piston 3000 can move back and forth in a first direction in the first valve cavity 1100, thereby realizing the opening and closing of the valve port 1510. When the piston 3000 realizes the opening of the valve port 1510, the solenoid valve 100 is in a connected state, and when the piston 3000 realizes the closing of the valve port 1510, the solenoid valve 100 is in a disconnected state. The first direction is defined as the axial direction, and the piston 3000 abuts against the cavity wall 1200 of the first valve cavity 1100 along the radial direction. The piston 3000 is radially limited by abutting against the cavity wall 1200 of the first valve cavity 1100 in the radial direction, ensuring that the piston 3000 can smoothly reciprocate in the axial direction in the first valve cavity 1100. Compared with the related art, when the outer diameter of the piston 3000 is the same, the radial dimensions of the valve seat 1000 and the valve cover 2000 can be made smaller, which is conducive to the miniaturization and lightweight of the solenoid valve 100.

[0056] The solenoid valve 100 is used to control the flow of the medium in the refrigeration device 200. For example, the refrigeration device 200 includes an integrated module (not shown in the figure), and the integrated module is provided with an installation cavity (not shown in the figure). The solenoid valve 100 is installed in the installation cavity. Of course, the refrigeration device 200 in this embodiment is not limited to this, as long as the flow control of the medium can be achieved through the solenoid valve 100. It can be understood that the solenoid valve 100 of the refrigeration device 200 adopts the technical solution of the above embodiment, and therefore at least has the beneficial effects brought by the technical solution of the above embodiment, which will not be repeated here.

[0057] A third aspect of the present application discloses a car 300, such as Figure 6 As shown, the automobile 300 includes the above-mentioned refrigeration device 200, and the refrigeration device 200 includes a solenoid valve 100, the solenoid valve 100 includes a valve seat 1000, a valve cover 2000 and a piston 3000, the valve seat 1000 is provided with a valve port 1510 and a first valve cavity 1100, the inner wall 1200 of the valve seat 1000 is constituted as the cavity wall 1200 of the first valve cavity 1100, the valve cover 2000 is configured to be connected with the valve seat 1000, so as to enclose the first valve cavity 1100, and the piston 3000 is arranged in the first valve cavity 1100. The piston 3000 can reciprocate in the first valve cavity 1100 along a first direction, thereby realizing the opening and closing of the valve port 1510. When the piston 3000 realizes the opening of the valve port 1510, the solenoid valve 100 is in a connected state. When the piston 3000 realizes the closing of the valve port 1510, the solenoid valve 100 is in a disconnected state. The first direction is defined as an axial direction, and the piston 3000 abuts against the cavity wall 1200 of the first valve cavity 1100 along a radial direction. The piston 3000 is radially limited by abutting against the cavity wall 1200 of the first valve cavity 1100 in the radial direction, ensuring that the piston 3000 can smoothly reciprocate in the axial direction in the first valve cavity 1100. Compared with the related art, when the outer diameter of the piston 3000 is the same, the radial dimensions of the valve seat 1000 and the valve cover 2000 can be made smaller, which is conducive to the miniaturization and lightweight of the solenoid valve 100.

[0058] It is understandable that the automobile 300 can be a new energy automobile 300, the new energy automobile 300 can be a pure electric automobile 300 with a motor as the main driving force, and the new energy automobile 300 can also be a hybrid electric automobile 300 with an internal combustion engine and a motor as the main driving force. The internal combustion engine and the motor that provide driving power for the new energy automobile 300, wherein the internal combustion engine can use gasoline, diesel, hydrogen, etc. as fuel, and the way to provide electrical energy for the motor can use power batteries, hydrogen fuel cells, etc., which are not specifically limited here. It should be noted that this is only an exemplary description of the structure of the new energy automobile 300, and it is not intended to limit the scope of protection of the present invention / utility model. Since the refrigeration equipment 200 of the automobile 300 adopts the technical solution of the above-mentioned embodiment, it at least has the beneficial effects brought about by the technical solution of the above-mentioned embodiment, and will not be repeated here.

[0059] The above description is only a preferred embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made based on the concept of the present application and the contents of the present application description and drawings, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A solenoid valve (100), characterized in that: include: A valve seat (1000) is provided with a first valve cavity (1100) and a valve port (1510), wherein an inner wall (1200) of the valve seat (1000) constitutes a cavity wall (1200) of the first valve cavity (1100); A valve cover (2000) connected to the valve seat (1000) to enclose the first valve cavity (1100); as well as a piston (3000) disposed in the first valve cavity (1100) and capable of reciprocating along a first direction to close and open the valve port (1510); the solenoid valve (100) is adapted to be in a connected state when the piston (3000) opens the valve port (1510), and is adapted to be in a disconnected state when the piston (3000) closes the valve port (1510); with the first direction being the axial direction, the piston (3000) is adapted to abut against the cavity wall (1200) of the first valve cavity (1100) along the radial direction; The outer wall (1300) of the valve seat (1000) is provided with an abutment end (1600), an external thread (1700) and a first sealing ring (1800); the solenoid valve (100) is suitable for being connected to a target area via the external thread (1700), suitable for being sealedly connected to the target area via the first sealing ring (1800), and suitable for axially limiting by abutting the abutment end (1600) with the target area; the abutment end (1600) is provided below the external thread (1700) and the first sealing ring (1800).

2. The solenoid valve (100) according to claim 1, characterized in that: The piston (3000) is suitable for abutting against the cavity wall (1200) of the first valve cavity (1100) at its maximum outer diameter along the radial direction.

3. The solenoid valve (100) according to claim 1, characterized in that: The dimension of the valve cover (2000) along the axial direction is not greater than the dimension of the piston (3000) along the axial direction.

4. The solenoid valve (100) according to claim 1, characterized in that: The cavity wall (1200) of the first valve cavity (1100) includes an adjacent first cavity wall (1210) and a second cavity wall (1220), the first cavity wall (1210) and the second cavity wall (1220) forming a cylindrical shape along the axial direction, the piston (3000) being suitable for abutting against the first cavity wall (1210) along the radial direction, and the valve cover (2000) being embedded in the second cavity wall (1220).

5. The solenoid valve (100) according to claim 1, characterized in that: The first sealing ring (1800) is located above the external thread (1700).

6. The solenoid valve (100) according to claim 1, characterized in that: The valve seat (1000) is provided with a first flow port (1400), the first flow port (1400) penetrates the outer wall (1300) and the inner wall (1200) of the valve seat (1000), and the first flow port (1400) is communicated with the first valve cavity (1100).

7. The solenoid valve (100) according to claim 1, characterized in that: The valve seat (1000) is provided with a through hole (1500), one end of the through hole (1500) forms the valve port (1510), and the other end forms a second flow port (1520).

8. The solenoid valve (100) according to claim 6 or 7, characterized in that: The first flow port (1400) is open along the radial direction; and / or the through hole (1500) extends along the axial direction.

9. The solenoid valve (100) according to claim 1, characterized in that: The piston (3000) is provided with a second sealing ring (3100), and the piston (3000) is suitable for closing the valve port (1510) by abutting the second sealing ring (3100) against the edge of the valve port (1510).

10. A refrigeration device (200), characterized in that: The solenoid valve (100) comprises any one of claims 1 to 9.

11. An automobile (300), characterized in that: Comprising the refrigeration device (200) according to claim 10.

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