Electromagnetic valve, refrigeration equipment and automobile

Abstract

The electromagnetic valve comprises a valve seat and a valve cover, the valve seat is provided with a valve cavity, the valve cover and the valve seat are connected to enclose the valve cavity, the valve cover comprises a valve cover body, a first connecting part and a second connecting part, and the first connecting part and the second connecting part are arranged on the valve cover body; the valve deck body is arranged in a protruding mode relative to the end of the valve seat in the axial direction, the first connecting part is connected with the valve seat so that the valve deck can be fixed to the valve seat, and the second connecting part is suitable for being connected with a target area so that the electromagnetic valve can be fixed to the target area. According to the electromagnetic valve, the valve cover body is designed, and the valve cover body is arranged relative to the end of the valve seat in the axial direction in a protruding mode, that is, the valve cover is not completely embedded into the valve seat, so that the overlapped part of the valve seat relative to the valve cover can be reduced or even eliminated, the material consumption is reduced, the material utilization rate is improved, and light weight and miniaturization 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] With the increasing use of automobiles, temperature regulation has become a basic feature of automobiles to achieve a more comfortable driving environment. Among them, solenoid valves are often installed in the pipelines of the refrigeration system to control the flow of media in the pipeline system.

[0003] The solenoid valve consists of a variety of components, such as valve seat, valve cover, piston, moving iron core and static iron core. At present, the solenoid valve is large in size and weight, and the material cost and processing cost are relatively high, so it is necessary to improve it. Summary of the Invention

[0004] 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.

[0005] To achieve the above objectives, the present application discloses a solenoid valve, comprising:

[0006] a valve seat defining a valve cavity; and

[0007] A valve cover is connected to the valve seat to enclose the valve cavity, and the valve cover includes a valve cover body, a first connecting portion and a second connecting portion. The first connecting portion and the second connecting portion are arranged on the valve cover body, and the valve cover body is protruded relative to the end of the valve seat in the axial direction. The first connecting portion is connected to the valve seat to fix the valve cover to the valve seat, and the second connecting portion is suitable for connecting to the target area to fix the solenoid valve to the target area.

[0008] In some embodiments of the present application, the first connecting portion is protruded relative to the valve cover body in the axial direction, and the first connecting portion and the end portion of the valve seat are inserted into each other.

[0009] In some embodiments of the present application, the first connecting portion and the end portion of the valve seat are interference fit.

[0010] In some embodiments of the present application, the first connecting portion and an end portion of the valve seat are welded.

[0011] In some embodiments of the present application, the valve cover body is also protruded in the radial direction relative to the outer wall of the valve seat, and the part of the valve cover body protruding in the radial direction relative to the outer wall of the valve seat is an outer protruding end. The second connecting portion is provided at the outer protruding end, and the outer protruding end is provided with a limiting portion, and the limiting portion is suitable for being stopped when the solenoid valve is fixed in the target area to limit the axial position of the solenoid valve.

[0012] In some embodiments of the present application, the outer wall of the outer protruding end along the radial direction is provided with the second connecting portion, and the second connecting portion is an external thread; and / or the lower side of the outer protruding end along the axial direction is provided with the limiting portion.

[0013] In some embodiments of the present application, the valve cover further includes an abutment portion provided on the valve cover body, and the abutment portion is suitable for stopping the axial movement of the piston of the solenoid valve.

[0014] In some embodiments of the present application, the solenoid valve further includes a piston, which is movably arranged in the valve cavity along the axial direction, and is suitable for abutting against the cavity wall of the valve cavity along the radial direction to be radially limited, and the inner wall of the valve seat constitutes the cavity wall of the valve cavity.

[0015] In some embodiments of the present application, the valve cover is provided with a mounting hole, and the mounting hole penetrates the valve cover in an axial direction; the solenoid valve further includes a static iron core, and the static iron core is inserted into the mounting hole and fixed.

[0016] In some embodiments of the present application, the mounting hole includes a first hole segment and a second hole segment along the axial direction, the diameter of the first hole segment is larger than the diameter of the second hole segment, and a first step surface is provided between the first hole segment and the second hole segment; the static iron core includes a first mating segment and a second mating segment along the axial direction, the diameter of the first mating segment is larger than the diameter of the second mating segment, and a second step surface is provided between the first mating segment and the second mating segment; the first mating segment and the first hole segment have a transition fit, the second mating segment and the second hole segment have a clearance fit, and the first step surface and the second step surface abut each other;

[0017] The solenoid valve further includes a piston, a portion of the piston is movable in the valve cavity, and another portion of the piston is movable in the second hole section.

[0018] In some embodiments of the present application, the piston is provided with a first through hole, which penetrates the part of the piston in the valve cavity along the axial direction, and the valve cover is provided with a transverse hole, which connects the second hole section and the valve cavity, and the diameter of the transverse hole is larger than the diameter of the first through hole.

[0019] A second aspect of the present application discloses a refrigeration device, which includes a target area and the above-mentioned solenoid valve, wherein the solenoid valve is fixed to the target area.

[0020] A third aspect of the present application discloses a car, which includes the above-mentioned refrigeration device.

[0021] In the technical solution of the present application, a valve cover body is designed, and the end of the valve cover body is convex relative to the valve seat along the axial direction. That is to say, the valve cover is not completely embedded in the valve seat. This can reduce or even eliminate the overlapping part of the valve seat relative to the valve cover, reduce the amount of material used, improve material utilization, and is conducive to the lightweight and miniaturization of the solenoid valve.

[0022] Other advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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.

[0024] Figure 1 is a cross-sectional view of a solenoid valve in some embodiments;

[0025] Figure 2 for Figure 1 A schematic diagram of the partial structure of the solenoid valve shown;

[0026] Figure 3 for Figure 1 A schematic diagram of the matching of the housing and the valve cover in the solenoid valve;

[0027] Figure 4 for Figure 1 A cross-sectional view of the valve cover in the solenoid valve shown;

[0028] Figure 5 for Figure 1 A cross-sectional view of the valve seat in the solenoid valve shown;

[0029] Figure 6 The cross-sectional view of the solenoid valve in some embodiments (structure and Figure 1 different);

[0030] Figure 7 for Figure 6 A schematic diagram of the partial structure of the solenoid valve shown;

[0031] Figure 8 for Figure 6 A cross-sectional view of the valve seat in the solenoid valve shown;

[0032] Figure 9 for Figure 6 The diagram of the matching between the valve cover and the static iron core in the solenoid valve shown in the figure;

[0033] Figure 10 for Figure 6 A cross-sectional view of the valve cover in the solenoid valve shown;

[0034] Figure 11 for Figure 10 The enlarged view marked A in FIG;

[0035] Figure 12 for Figure 6 A cross-sectional view of the static iron core in the solenoid valve shown;

[0036] Figure 13 for Figure 12 The enlarged image marked as B in the figure;

[0037] Figure 14 Schematic diagram of refrigeration equipment in some embodiments;

[0038] Figure 15 Schematic diagram of a car in some embodiments.

[0039] Description of Figure Numbers:

[0040] Solenoid valve 100, refrigeration equipment 200, automobile 300, valve seat 1000, valve cavity 1001, cavity wall / inner wall 1100, outer wall 1200, first flow port 1300, first valve port 1400, end 1500, valve cover 2000, valve cover body 2100, outer protruding end 2110, mounting hole 2200, first hole section 2210, second hole section 2220, first step surface 2300, first connecting portion 2300, first Two connecting parts 2400, a limiting part 2500, abutting part 2600, a transverse hole 2700, a piston 3000, a first through hole 3100, a second through hole 3200, a first opening 3210, a second opening 3220, a first sealing plug 3310, a second sealing plug 3320, a shell 4000, a static iron core 4100, a first mating section 4110, a second mating section 4120, a second step surface 4130, and a moving iron core 4200.

[0041] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0043] 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 various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0044] In this application, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] In addition, the descriptions of "first", "second", etc. in this application are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. 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.

[0046] This application proposes a solenoid valve 100, combined with Figure 1 and Figure 2 As shown, the solenoid valve 100 includes a valve seat 1000 and a valve cover 2000, the valve seat 1000 is provided with a valve cavity 1001, and the valve cover 2000 is connected to the valve seat 1000 so as to enclose the valve cavity 1001; wherein the valve cover 2000 includes a valve cover body 2100, a first connecting portion 2300 and a second connecting portion 2400, the first connecting portion 2300 is provided on the valve cover body 2100, and the second connecting portion 2400 is also provided on the valve cover body 2100, and the first connecting portion 2300 is connected to the valve seat 100 so that the valve cover 2000 is fixedly mounted to the valve seat 1000. When the valve cover 2000 is fixedly mounted to the valve seat 1000, the valve cover body 2100 moves along the axial direction (the so-called axial direction is the reciprocating direction of the piston 3000 of the solenoid valve 100, as shown in FIG. Figure 1 The upper and lower directions in the figure, the same below) are protruded relative to the end 1500 of the valve seat 1000, that is, the valve cover 2000 has an end 1500 that at least partially protrudes from the valve seat 1000 along the axial direction, and the second connecting portion 2400 is used to connect with the target area so that the solenoid valve 100 is fixedly installed to the target area.

[0047] By designing the valve cover body 2100, the valve cover body 2100 is protruded relative to the end 1500 of the valve seat 1000 along the axial direction, that is, the valve cover 2000 is not completely embedded in the valve seat 1000. In this way, the overlapping part of the valve seat 1000 relative to the valve cover 2000 can be reduced or even eliminated, thereby reducing the amount of material used and improving the material utilization rate, which is conducive to the lightweight and miniaturization of the solenoid valve 100.

[0048] Specifically, Figures 1 to 5 The solenoid valve 100 shown includes a valve seat 1000, a valve cover 2000, a piston 3000, and a driver (the driver includes a housing 4000, a movable iron core 4200, and a stationary iron core 4100, described in detail below). The valve seat 1000 is provided with a valve cavity 1001, a first flow port 1300, and a first valve port 1400. The first flow port 1300 is provided in the wall of the valve seat 1000 and communicates with the valve cavity 1001. The first valve port 1400 is located approximately in the lower center of the valve seat 1000. The piston 3000 is movably disposed in the valve cavity 1001 and can close or open the first valve port 1400. The valve cover 2000 is installed on the valve seat 1000 to enclose the valve cavity 1001. A mounting hole 2200 is provided in the middle of the valve cover 2000. The driving member is inserted into the mounting hole 2200. Specifically, the housing 4000 is inserted into the mounting hole 2200. The moving iron core 4200 and the static iron core 4100 are arranged in the housing 4000. The moving iron core 4200 is closer to the valve cavity 1001 (relative to the static iron core 4100). Figure 1 The static iron core 4100 is located above the moving iron core 4200 , and a coil (not shown) surrounds the static iron core 4100 .

[0049] The piston 3000 is provided with a first through hole 3100 and a second through hole 3200. Along the axial direction, the first through hole 3100 penetrates the piston 3000, and the second through hole 3200 also penetrates the piston 3000. The second through hole 3200 is approximately located at the center of the piston 3000, and the first through hole 3100 is approximately located at the periphery of the piston 3000. The so-called penetration means that the first through hole 3100 can connect both sides of the axial direction of the piston 3000, and the second through hole 3200 can connect both sides of the axial direction of the piston 3000. The second through hole 3200 is on one side of the piston 3000 ( Figure 1 A first opening 3210 is provided on the lower side of the piston 3000, and a second through hole 3200 is provided on the other side of the piston 3000 ( Figure 1 A second opening 3220 is provided on the upper middle side, the first opening 3210 is surrounded by a first sealing plug 3310 , and the second opening 3220 is surrounded by a second sealing plug 3320 .

[0050] Figure 1The working principle of the solenoid valve 100 shown is as follows:

[0051] When the solenoid valve 100 is energized, the static iron core 4100 has magnetic force, and the static iron core 4100 attracts the movable iron core 4200, and the movable iron core 4200 moves toward the static iron core 4100, that is, the movable iron core 4200 moves in a direction away from the piston 3000 ( Figure 1 The moving iron core 4200 moves upward), the moving iron core 4200 is separated from the second sealing plug 3320, and the moving iron core 4200 opens the second opening 3220. The medium can enter the lower space of the piston 3000 (a part of the valve cavity 1001) from the first flow port 1300, and then enter the upper space of the piston 3000 (another part of the valve cavity 1001) through the first through hole 3100, so that it can enter the second through hole 3200 through the second opening 3220, and finally enter the first valve port 1400 through the first opening 3210 and discharge from the solenoid valve 100. The pressure difference generated when the above-mentioned medium circulates causes the piston 3000 to move toward the moving iron core 4200, and the first sealing plug 3310 is separated from the periphery of the first valve port 1400, so that the piston 3000 opens the first valve port 1400.

[0052] When the solenoid valve 100 is powered off, the magnetic force of the static iron core 4100 disappears, the static iron core 4100 releases the movable iron core 4200, and the movable iron core 4200 moves away from the static iron core 4100 and toward the piston 3000 ( Figure 1 The moving iron core 4200 moves downward), the moving iron core 4200 is inserted into the second sealing plug 3320 and sealed, thereby closing the second opening 3220. At this time, the medium cannot enter the second through hole 3200 from the second opening 3220. As the medium continues to enter the opposite sides of the piston 3000 until the pressure is equal, the piston 3000 moves toward the first valve port 1400 under the action of the moving iron core 4200 and gravity, so that the first sealing plug 3310 and the periphery of the first valve port 1400 are sealed and contacted, thereby causing the piston 3000 to close the first valve port 1400 (the first opening 3210 can be connected to the first valve port 1400, but no medium flows from the first opening 3210 to the first valve port 1400).

[0053] In this embodiment, the valve cover 2000 includes a valve cover body 2100, a first connecting portion 2300 and a second connecting portion 2400. The first connecting portion 2300 and the second connecting portion 2400 are both provided on the valve cover body 2100. The valve cover 2000 is connected to the valve seat 1000 via the first connecting portion 2300, thereby fixing the valve cover 2000 to the valve seat 1000. The first connecting portion 2300 is not limited in this embodiment, and reference may be made to the connection method between the valve cover 2000 and the valve seat 1000 in the related art. When the valve cover 2000 is installed on the valve seat 1000, the valve cover body 2100 is convex relative to the end 1500 of the valve seat 1000 in the axial direction, as shown in FIG. Figure 2 The valve cover body 2100 shown is protruding relative to the end 1500 of the valve seat 1000 in the axial direction, that is, the end 1500 of the valve cover body 2100 is exposed relative to the valve seat 1000, and since the second connecting part 2400 is set on the valve cover body 2100, when the solenoid valve 100 is installed in the target area, the second connecting part 2400 can be connected to the target area, thereby realizing the installation of the solenoid valve 100. In this embodiment, the connection method of the second connecting part 2400 and the target area is not limited, and reference can be made to the connection method of the solenoid valve 100 and the target area in the relevant technology.

[0054] It is understandable that in the related art, the valve cover 2000 needs to be embedded as a whole in the valve seat 1000, that is, the valve seat 1000 needs to be completely wrapped along the circumference of the valve cover 2000, that is, a part of the valve seat 1000 along the axial direction overlaps with the valve cover 2000 in the radial direction. In this embodiment, since the valve cover body 2100 is protruding relative to the end 1500 of the valve seat 1000, that is, the valve cover 2000 is not embedded as a whole in the valve seat 1000, the valve seat 1000 does not form a complete wrapping of the valve cover 2000 in the circumference, this can reduce or even eliminate the overlapping part of the valve seat 1000 relative to the valve cover 2000, thereby reducing the amount of material used, which is beneficial to reducing the weight and cost of the solenoid valve 100, and is beneficial to the lightweight and miniaturization of the solenoid valve 100.

[0055] In the related art, a second connecting portion 2400 is provided on the valve seat 1000 for connecting to the target area, and the second connecting portion 2400 is provided at the overlapping portion of the valve seat 1000 relative to the valve cover 2000. In this embodiment, by reducing or even eliminating the overlapping portion of the valve seat 1000 relative to the valve cover 2000, on this basis, the solenoid valve 100 can be installed in the target area by providing the second connecting portion 2400 on the valve cover body 2100.

[0056] Generally speaking, the radial dimensions of the valve cover 2000 vary along the axial direction, presenting a structure with a larger top and a smaller bottom (see Figure 2 and Figure 4As shown in the figure, if the valve cover 2000 is fully embedded in the valve seat 1000, the radial dimension of the valve seat 1000 needs to match the maximum radial dimension of the valve cover 2000. In the present embodiment, since the valve cover 2000 does not need to be fully embedded in the valve seat 1000, the radial dimension of the valve seat 1000 does not need to match the maximum radial dimension of the valve cover 2000. This is beneficial to reducing the radial dimension of the valve seat 1000, thereby being more conducive to the miniaturization and lightweighting of the solenoid valve 100.

[0057] The target area mentioned above is a structure for installing the solenoid valve 100. The target area is explained using the application of the solenoid valve 100 to a refrigeration device 200 as an example. The refrigeration device 200 includes an integrated module (not shown in the figure), which has a flow path inside the integrated module for medium flow. The integrated module has an installation cavity (not shown in the figure, the installation cavity can be considered as the target area, or the installation cavity and the surrounding area of ​​the installation cavity can be considered as the target area). The solenoid valve 100 is installed (inserted) into the installation cavity to control the flow of the medium in the flow path. The solenoid valve 100 is fixed to the installation cavity by the cooperation of the second connecting portion 2400 with the corresponding structure of the installation cavity.

[0058] In order to facilitate the assembly between the valve cover 2000 and the valve seat 1000, Figure 2 and Figure 4 As shown, in some embodiments of the present application, the first connecting portion 2300 is designed to protrude relative to the valve cover body 2100 along the axial direction, so that when the valve cover 2000 is installed on the valve seat 1000, the first connecting portion 2300 and the end 1500 of the valve seat 1000 are inserted into each other.

[0059] Specifically, during the installation process of the valve cover 2000 and the valve seat 1000, the valve cover 2000 and the valve seat 1000 are controlled to move relative to each other until the valve cover body 2100 abuts against the end 1500 of the valve seat 1000 to form a limit. At this time, the first connecting part 2300 and the end 1500 of the valve seat 1000 are in a mutually inserted state. Through the mutual insertion of the first connecting part 2300 and the end 1500 of the valve seat 1000, a preliminary constraint can be formed between the valve cover 2000 and the valve seat 1000, thereby facilitating subsequent further fixing operations and helping to improve the connection stability between the valve cover 2000 and the valve seat 1000.

[0060] It is understandable that the first connection portion 2300 and the end portion 1500 of the valve seat 1000 can be interposed in various ways, for example, Figure 2 As shown, the first connecting portion 2300 is located in the end portion 1500 of the valve seat 1000, and may also be as shown in FIG. Figure 7As shown, the first connecting portion 2300 is located outside the valve seat 1000 and is integrally mounted on the end portion 1500 of the valve seat 1000 .

[0061] Furthermore, in some embodiments of the present application, the first connecting portion 2300 is designed to be interference fit with the end portion 1500 of the valve seat 1000 .

[0062] Specifically, the interference fit between the first connecting portion 2300 and the end portion 1500 of the valve seat 1000 mentioned herein means that at least a portion of the first connecting portion 2300 has an interference fit with the end portion 1500 of the valve seat 1000. As mentioned above, the first connecting portion 2300 needs to be interposed with the end portion 1500 of the valve seat 1000. By designing the first connecting portion 2300 to have an interference fit with the end portion 1500 of the valve seat 1000, the valve cover 2000 is less likely to move easily in the axial and radial directions, thereby improving the stability and firmness of the interposition between the valve cover 2000 and the valve seat 1000 and facilitating subsequent further connection and fixation.

[0063] In some embodiments of the present application, the first connection portion 2300 is fixed to the end portion 1500 of the valve seat 1000 by welding. Achieving fixation by welding can effectively reduce the difficulty of connection. Welding provides a good connection and fixation effect, and the process is simple. Furthermore, welding can form a good seal between the first connection portion 2300 and the valve seat 1000 to prevent leakage. It is understood that in the related art, a sealing ring is required to be provided between the valve cover 2000 and the valve seat 1000. The sealing ring is used to achieve a seal between the valve cover 2000 and the valve seat 1000. Generally, a groove is required to be provided on the valve cover 2000, and the sealing ring is installed in the groove. To this end, the valve cover 2000 in the related art needs to have a corresponding position along the axial direction to form the groove. In this embodiment, since the first connecting portion 2300 and the end portion 1500 of the valve seat 1000 are fixed by welding and a good seal is formed, the sealing ring between the valve cover 2000 and the valve seat 1000 can be eliminated, that is, no groove is required on the valve cover 2000. As a result, the axial dimension of the valve cover 2000 can be made smaller, which is conducive to the lightweight and miniaturization of the solenoid valve 100. For example, Figure 2 and Figure 4 The outer wall of the first connecting portion 2300 along the radial direction is welded to the inner wall of the end portion 1500 of the valve seat 1000, as shown in FIG. Figure 7 and Figure 10 The inner wall of the first connecting portion 2300 shown in the radial direction is welded to the outer wall of the end portion 1500 of the valve seat 1000 .

[0064] Combine Figure 1 、 Figure 2 、 Figure 4 and Figure 5 As shown, in some embodiments of the present application, the valve cover body 2100 is further designed to protrude relative to the outer wall 1200 of the valve seat 1000 in the radial direction. The portion of the valve cover body 2100 protruding relative to the outer wall 1200 of the valve seat 1000 in the radial direction is defined as the protruding end 2110, and the second connecting portion 2400 is disposed at the protruding end 2110. As mentioned above, when installing the solenoid valve 100 in a target area, the solenoid valve 100 needs to be inserted into the target area. Due to the provision of the protruding end 2110, the radial dimension of the location where the protruding end 2110 is located is larger than that of the valve seat 1000. The radial dimension of the location on the target area relative to the protruding end 2110 is also larger. This prevents interference with the valve seat 1000 of the solenoid valve 100 when inserted into the target area. By disposing the second connecting portion 2400 on the protruding end 2110, connection with the corresponding structure of the target area is facilitated.

[0065] On this basis, the outer protruding end 2110 is provided with a limiting portion 2500. During the process of installing the solenoid valve 100 into the target area until the movement limit is reached, the outer protruding end 2110 is stopped by the corresponding structure of the target area (such as when the target area is an installation cavity, it is stopped by the periphery of the installation cavity). In this way, the solenoid valve 100 cannot continue to move, thereby forming an axial limit (the so-called axial limit is the limit along the installation direction), thereby prompting the solenoid valve 100 to be installed in place.

[0066] Combine Figure 4 As shown, in some embodiments of the present application, the second connecting portion 2400 is provided on the outer wall of the outer protruding end 2110 in the radial direction, and the second connecting portion 2400 is an external thread. Accordingly, the target area is provided with an internal thread. Through the cooperation of the internal thread and the external thread, the solenoid valve 100 is installed in the target area by means of rotational insertion, which is convenient and quick to install. Furthermore, the lower side of the outer protruding end 2110 along the axial direction is provided as the limiting portion 2500. It can be understood that the upper and lower positions herein are based on the position where the valve seat 1000 is located as the lower side and the position where the valve cover 2000 is located as the upper side. That is, the side of the outer protruding end 2110 facing the position where the valve seat 1000 is located is called the lower side. In this way, the structural setting of the limiting portion 2500 can be simplified while effectively achieving the axial limit of the solenoid valve 100.

[0067] In the related art, the limiting portion 2500 and the second connecting portion 2400 are both arranged on the valve seat 1000 and at different positions, which is not conducive to the lightweight and miniaturization of the valve seat 1000. In this embodiment, the limiting portion 2500 and the second connecting portion 2400 are both arranged on the outer protruding end 2110, specifically on the radial outer wall and the axial lower side of the outer protruding end 2110, which is conducive to reducing the space occupied.

[0068] Further, combined with Figure 4 As shown, in some embodiments of the present application, the valve cover 2000 further includes an abutment portion 2600, which is disposed on the valve cover body 2100 and is used to stop the axial movement of the piston 3000. Specifically, as mentioned above, the piston 3000 reciprocates substantially in the axial direction within the valve cavity 1001, thereby cooperating with the movable iron core 4200 and the first valve port 1400. By providing the abutment portion 2600, when the piston 3000 moves away from the first valve port 1400, it is stopped by the abutment portion 2600 when the piston 3000 reaches its limit of movement, thereby limiting the movement of the piston 3000 away from the first valve port 1400.

[0069] Combine Figure 1 As shown, the piston 3000 is movable in the valve cavity 1001 along the axial direction, and the piston 3000 is suitable for abutting against the cavity wall 1100 of the valve cavity 1001 along the radial direction, thereby limiting the piston 3000 in the radial direction, and the inner wall 1100 of the valve seat 1000 constitutes the cavity wall 1100 of the valve cavity 1001.

[0070] The piston 3000 is limited in the radial direction to prevent it from tilting and ensure smooth movement of the piston 3000 in the axial direction. In this embodiment, the piston 3000 is adapted to abut against the cavity wall 1100 of the valve cavity 1001 in the radial direction, that is, abut against the inner wall 1100 of the valve seat 1000, thereby being limited in the radial direction. Therefore, the piston 3000 no longer needs to be limited in the radial direction by the valve cover 2000. The piston 3000 and the valve cover 2000 are arranged in the axial direction and do not contact each other in the radial direction. In the related art, the piston 3000 needs to be limited in the radial direction by the valve cover 2000. Therefore, in this embodiment, through the above design, the size of the solenoid valve 100 in the radial direction is greatly reduced. For example, under the premise that the radial dimension of the piston 3000 remains unchanged, since the piston 3000 abuts against the cavity wall 1100 of the valve cavity 1001 in the radial direction instead of the valve cover 2000, that is, there is no corresponding structure of the valve cover 2000 between the cavity wall 1100 of the valve cavity 1001 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 1100 of the valve cavity 1001 along the radial direction. It can be that the piston 3000 abuts against each other only when the piston 3000 is deflected (that is, when the piston 3000 is not skewed, it does not abut against each other, and there is a certain gap, that is, the piston 3000 and the cavity wall 1100 of the valve cavity 1001 are clearance-matched), or the piston 3000 and the cavity wall 1100 of the valve cavity 1001 are continuously abutted against each other, so that it can guide the movement of the piston 3000 along the axial direction.

[0071] Combine Figures 6 to 13 As shown, in some of the embodiments of the present application, the valve cover 2000 is provided with a mounting hole 2200 , which passes through the valve cover 2000 along the axial direction, and the static iron core 4100 is inserted into the mounting hole 2200 and fixed.

[0072] Specifically, with Figure 1 The solenoid valve 100 shown in FIG. 1 is different in that the positions of the static iron core 4100 and the moving iron core 4200 of this embodiment are opposite. Figure 6The static iron core 4100 is located below the moving iron core 4200, the static iron core 4100 is inserted and fixed to the mounting hole 2200, the housing 4000 is fixed to the static iron core 4100, the moving iron core 4200 is set in the housing 4000, and a part of the moving iron core 4200 passes through the static iron core 4100 to cooperate with the piston 3000. The static iron core 4100 and the valve cover 2000 of this embodiment are split structures, which are connected and fixed by connecting means. Compared with the static iron core 4100 and the valve cover 2000 in the related art, the static iron core 4100 and the valve cover 2000 are processed as one piece. The split manufacturing method is adopted in this embodiment, which can reduce the processing difficulty, reduce the cost, and improve the material utilization rate. It can be understood that there are many ways to fix the static iron core 4100. For example, the static iron core 4100 and the mounting hole 2200 are fixed by means of interference fit, welding, screw connection, etc.

[0073] Further, combined with Figures 9 to 13 As shown, in some embodiments of the present application, the mounting hole 2200 includes a first hole section 2210 and a second hole section 2220, and the first hole section 2210 and the second hole section 2220 are arranged along the axial direction. The static iron core 4100 includes a first mating section 4110 and a second mating section 4120, and the first mating section 4110 and the second mating section 4120 are arranged in the axial direction. Figure 6In the orientation, the first hole section 2210 is located above the second hole section 2220, the first mating section 4110 is located above the second mating section 4120, a first step surface 2300 is provided between the first hole section 2210 and the second hole section 2220, and a second mating surface is provided between the first mating section 4110 and the second mating section 4120. When the static iron core 4100 is inserted into the mounting hole 2200, the second mating section 4120 is inserted before the first mating section 4110 until the first step surface 2300 abuts against the second step surface 4130, and the static iron core 4100 is inserted to the limit and cannot be inserted further. At this time, the second mating section 4120 is clearance-fitted with the second hole section 2220, and the first mating section 4110 is transition-fitted with the first hole section 2210. It can be understood that the second fitting segment 4120 is inserted into the second hole segment 2220 , and the second fitting segment 4120 only occupies part of the space of the second hole segment 2220 , while the remaining space of the second hole segment 2220 is used for the corresponding part of the piston 3000 to move. That is, a part of the piston 3000 is movable in the valve cavity 1001, and the other part of the piston 3000 is movable in the second hole section 2220. In this way, the cavity wall 1100 of the valve cavity 1001 and the hole wall of the second hole section 2220 can limit the piston 3000 in the radial direction, thereby guiding the movement of the piston 3000 in the axial direction. It can be seen that the static iron core 4100 and the piston 3000 are both matched through the valve cover 2000, and the second matching section 4120 of the static iron core 4100 is clearance-matched with the second hole section 2220, and the first matching section 4110 of the static iron core 4100 is transition-matched with the first hole section 2210, thereby ensuring the coaxiality of the static iron core 4100 and the piston 3000, which is conducive to improving the sealing.

[0074] Combine Figure 6 and Figure 7 As shown, in some embodiments of the present application, the piston 3000 is provided with a first through hole 3100, and the first through hole 3100 is provided in the portion of the piston 3000 in the valve cavity 1001, and penetrates the portion of the piston 3000 in the valve cavity 1001 along the axial direction, that is, a portion of the piston 3000 is provided in the valve cavity 1001, dividing the valve cavity 1001 into, as shown in FIG. Figure 6In the orientation shown, the valve chamber 1001 is divided into an upper space and a lower space. The first through-hole 3100 connects the upper space and the lower space, and the valve cover 2000 is provided with a transverse hole 2700, which connects the second hole section 2220 and the valve chamber 1001 (the upper space). When the solenoid valve 100 is energized, the medium enters the lower space of the piston 3000 from the first flow port 1300, then enters the upper space of the piston 3000 through the first through-hole 3100, and then enters the second hole section 2220 through the transverse hole 2700, and then enters the second through-hole 3200 through the second opening 3220, and finally enters the first valve port 1400 through the first opening 3210 and is discharged from the solenoid valve 100. In this embodiment, the diameter of the transverse hole 2700 is designed to be larger than the diameter of the first through-hole 3100, which can reduce the resistance to medium flow and ensure the performance of the solenoid valve 100.

[0075] The second aspect of the present application discloses a refrigeration device 200, such as Figure 14 As shown, the refrigeration equipment 200 includes a target area and the above-mentioned solenoid valve 100, the solenoid valve 100 includes a valve seat 1000 and a valve cover 2000, the valve seat 1000 is provided with a valve cavity 1001, and the valve cover 2000 is connected to the valve seat 1000 so as to enclose the valve cavity 1001; wherein, the valve cover 2000 includes a valve cover body 2100, a first connecting portion 2300 and a second connecting portion 2400, the first connecting portion 2300 is provided on the valve cover body 2100, and the second connecting portion 2400 is also provided on the valve cover body On 2100, the first connecting portion 2300 is connected to the valve seat 1000 so that the valve cover 2000 is fixedly installed on the valve seat 1000. When the valve cover 2000 is fixedly installed on the valve seat 1000, the valve cover body 2100 is protruded relative to the end 1500 of the valve seat 1000 along the axial direction, that is, the valve cover 2000 has an end 1500 that at least partially protrudes from the valve seat 1000 along the axial direction, and the second connecting portion 2400 is used to connect to the target area so that the solenoid valve 100 is fixedly installed to the target area.

[0076] By designing the valve cover body 2100, the valve cover body 2100 is protruded relative to the end 1500 of the valve seat 1000 along the axial direction, that is, the valve cover 2000 is not completely embedded in the valve seat 1000. In this way, the overlapping part of the valve seat 1000 relative to the valve cover 2000 can be reduced or even eliminated, thereby reducing the amount of material used and improving the material utilization rate, which is conducive to the lightweight and miniaturization of the solenoid valve 100.

[0077] The solenoid valve 100 is used to control the flow of a medium in a refrigeration device 200. For example, the refrigeration device 200 includes an integrated module (not shown in the figure), the integrated module has a flow path inside, the flow path for the medium to flow, and the integrated module has an installation cavity (not shown in the figure, the installation cavity can be regarded as a target area, or the installation cavity and the surrounding area of ​​the installation cavity can be regarded as the target area). The solenoid valve 100 is installed (inserted) in the installation cavity, thereby controlling the flow of the medium in the flow path. The solenoid valve 100 is fixed to the installation cavity by the cooperation of the second connecting portion 2400 and the corresponding structure of 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 has at least the beneficial effects brought by the technical solution of the above embodiment, which will not be repeated here.

[0078] The third aspect of the present application discloses a car 300, such as Figure 15 As shown, the automobile 300 includes the above-mentioned refrigeration device 200, and the refrigeration device 200 includes the solenoid valve 100. It is understood that the automobile 300 can be a new energy automobile 300, and the new energy automobile 300 can be a pure electric vehicle 300 with an electric motor as the main driving force, or a hybrid electric vehicle 300 with an internal combustion engine and an electric motor as the main driving force. The internal combustion engine and the electric motor that provide driving power for the new energy automobile 300 can use gasoline, diesel, hydrogen, etc. as fuel, and the method of providing electrical energy to the electric motor can use a power battery, a hydrogen fuel cell, etc., without any special limitation here. It should be noted that this is merely an exemplary description of the structure of the new energy automobile 300, etc., and does not limit the scope of protection of the present invention. Since the refrigeration device 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.

[0079] 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 transformations made based on the contents of the present application specification 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 valve cavity (1001); as well as A valve cover (2000) is connected to the valve seat (1000) to enclose the valve cavity (1001), the valve cover (2000) includes a valve cover body (2100), a first connecting portion (2300) and a second connecting portion (2400), the first connecting portion (2300) and the second connecting portion (2400) being provided on the valve cover body (2100), the valve cover body (2100) being protruded relative to the end portion (1500) of the valve seat (1000) in the axial direction, the first connecting portion (2300) and the valve seat (1000) being connected to fix the valve cover (2000) to the valve seat (1000), and the second connecting portion (2400) being suitable for connecting to a target area to fix the solenoid valve (100) to the target area.

2. The solenoid valve (100) according to claim 1, characterized in that The first connection portion (2300) is protruded relative to the valve cover body (2100) in the axial direction, and the first connection portion (2300) and the end portion (1500) of the valve seat (1000) are inserted into each other.

3. The solenoid valve (100) according to claim 2, characterized in that The first connecting portion (2300) and the end portion (1500) of the valve seat (1000) are interference fit.

4. The solenoid valve (100) according to claim 2, characterized in that The first connecting portion (2300) and the end portion (1500) of the valve seat (1000) are welded.

5. The solenoid valve (100) according to claim 1, characterized in that The valve cover body (2100) is also protruded in the radial direction relative to the outer wall (1200) of the valve seat (1000), and the portion of the valve cover body (2100) protruding in the radial direction relative to the outer wall (1200) of the valve seat (1000) is an outer protruding end (2110). The second connecting portion (2400) is provided at the outer protruding end (2110), and the outer protruding end (2110) is provided with a limiting portion (2500). The limiting portion (2500) is suitable for being stopped when the solenoid valve (100) is fixed to the target area, so as to limit the axial position of the solenoid valve (100).

6. The solenoid valve (100) according to claim 5, characterized in that The outer wall of the outer convex end (2110) in the radial direction is provided with the second connecting portion (2400), and the second connecting portion (2400) is an external thread; and / or the lower side of the outer convex end (2110) in the axial direction is provided with the limiting portion (2500).

7. The solenoid valve (100) according to claim 1, characterized in that The valve cover (2000) further includes an abutment portion (2600) provided on the valve cover body (2100), and the abutment portion (2600) is suitable for stopping the axial movement of the piston (3000) of the solenoid valve (100).

8. The solenoid valve (100) according to claim 1, characterized in that The solenoid valve (100) further includes a piston (3000), which is movably arranged in the valve cavity (1001) along the axial direction, and the piston (3000) is suitable for abutting against the cavity wall (1100) of the valve cavity (1001) along the radial direction to be radially limited, and the inner wall (1100) of the valve seat (1000) constitutes the cavity wall (1100) of the valve cavity (1001).

9. The solenoid valve (100) according to claim 1, characterized in that The valve cover (2000) is provided with a mounting hole (2200), and the mounting hole (2200) penetrates the valve cover (2000) in the axial direction; the solenoid valve (100) further comprises a static iron core (4100), and the static iron core (4100) is inserted into the mounting hole (2200) and fixed.

10. The solenoid valve (100) according to claim 9, characterized in that The mounting hole (2200) includes a first hole section (2210) and a second hole section (2220) along the axial direction, the diameter of the first hole section (2210) is larger than the diameter of the second hole section (2220), and a first step surface (2300) is provided between the first hole section (2210) and the second hole section (2220); the static iron core (4100) includes a first mating section (4110) and a second mating section (4120) along the axial direction, the diameter of the first mating section (4110) is larger than the diameter of the second mating section (4120), and a second step surface (4130) is provided between the first mating section (4110) and the second mating section (4120); the first mating section (4110) and the first hole section (2210) are transitionally mated, the second mating section (4120) and the second hole section (2220) are clearance mated, and the first step surface (2300) and the second step surface (4130) are in abutment with each other; The solenoid valve (100) further comprises a piston (3000), a portion of the piston (3000) being movable in the valve cavity (1001), and another portion of the piston (3000) being movable in the second hole section (2220).

11. The solenoid valve (100) according to claim 10, characterized in that The piston (3000) is provided with a first through hole (3100), which penetrates the part of the piston (3000) in the valve cavity (1001) in the axial direction. The valve cover (2000) is provided with a transverse hole (2700), which connects the second hole section (2220) and the valve cavity (1001), and the diameter of the transverse hole (2700) is larger than the diameter of the first through hole (3100).

12. A refrigeration device (200), characterized in that: The invention comprises a target area and the solenoid valve (100) according to any one of claims 1 to 11, wherein the solenoid valve (100) is fixed to the target area.

13. An automobile (300), characterized in that: The refrigeration device (200) comprises the refrigeration device (200) according to claim 12.

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