Electromagnetic coil device and gas valve

Abstract

The present application relates to an electromagnetic coil device and a gas valve, wherein the electromagnetic coil device comprises at least a first winding component and a second winding component, wherein the first skeleton of the first winding component is provided with a first connection port and a second connection port, and the second skeleton of the second winding component is provided with a third connection port and a fourth connection port, and the electromagnetic coil device further comprises a first plug pin portion, a second plug pin portion and a third plug pin portion, wherein the first plug pin portion is connected to the first connection port, the second plug pin portion is connected to the fourth connection port, and the third plug pin portion is connected to both the second connection port and the third connection port. Such a design can make the electrical connection method of the first winding component and the second winding component more flexible, so that the first winding component and the second winding component can be connected in series or in parallel, so that the electromagnetic coil device can be suitable for different electrical connection methods.

Description

Technical Field

[0001] The present application relates to the field of electromagnetic control technology, and in particular to an electromagnetic coil device and a gas valve. Background Art

[0002] Gas valves are widely used in various industries due to their flexible on-off functions. They are also important components in industrial automation control systems and pipeline transmission. The gas valve includes an electromagnetic coil device, and the coil component is connected to a power source and a corresponding controller. The electromagnetic coil device of this structure is often only suitable for a certain specific electrical connection method, so there is a risk that the application of the gas valve is limited. Summary of the invention

[0003] The present application provides an electromagnetic coil device and a gas valve, wherein the electromagnetic coil can be adapted to different electrical connection methods.

[0004] The embodiment of the present application provides an electromagnetic coil device, comprising a first winding component and a second winding component, wherein the first winding component comprises a first frame, the second winding component comprises a second frame, the first frame and the second frame are position-limitedly connected, the first frame is provided with a first connection port and a second connection port, and the second frame is provided with a third connection port and a fourth connection port;

[0005] The first connection port is far away from the second frame, and the second connection port is close to the second frame;

[0006] The third connection port is close to the first frame, and the fourth connection port is far from the first frame.

[0007] The electromagnetic coil device further comprises a first pin portion, a second pin portion, and a third pin portion, wherein the first pin portion is fixedly connected to the first connection port, the second pin portion is fixedly connected to the fourth connection port, and the third pin portion comprises a first pin end and a second pin end, the first pin end is fixedly connected to the second connection port, and the second pin end is fixedly connected to the third connection port;

[0008] When the first winding component and the second winding component form a series connection state, the first pin portion is connected to one end of a power source, the second pin portion is connected to the other end of the power source, and the third pin portion is not connected to the power source;

[0009] When the first winding component and the second winding component are connected in parallel, the third pin portion is connected to one end of the power source, and the first pin portion and the second pin portion are connected to the other end of the power source.

[0010] In the electromagnetic coil device provided in the embodiment of the present application, the first pin portion is connected to the first connection port, the second pin portion is connected to the fourth connection port, and the third pin portion is connected to both the second connection port and the third connection port. Such a design can make the electrical connection method between the first winding component and the second winding component more flexible, so that the first winding component and the second winding component can be connected in series or in parallel, so that the electromagnetic coil device can be suitable for different electrical connection methods.

[0011] The second aspect of the present application also provides a gas valve, comprising a valve body, wherein the valve body is provided with a first valve port and a second valve port, and further comprises an electromagnetic drive device, a proportional adjustment device and a pressure difference adjustment device, wherein the electromagnetic drive device has an electromagnetic coil device, and further comprises a first electromagnetic drive component and a second electromagnetic drive component, wherein the first electromagnetic drive component comprises a first valve plug, and the second electromagnetic drive component comprises a second valve plug, wherein the first valve plug can approach or move away from the first valve port, and the second valve plug can approach or move away from the second valve port, wherein the electromagnetic coil device is an electromagnetic coil device as described in any one of the above items.

[0012] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A cross-sectional view of a first winding component and a second winding component provided in an embodiment of the present application;

[0014] Figure 2 A schematic diagram of the structure of the first skeleton provided in an embodiment of the present application;

[0015] Figure 3 for Figure 2 A schematic diagram of the structure from another perspective;

[0016] Figure 4 A schematic diagram of the structure of the second skeleton provided in the embodiment of the present application;

[0017] Figure 5 for Figure 4 A schematic diagram of the structure from another perspective;

[0018] Figure 6 for Figure 5 Right view of;

[0019] Figure 7 A schematic diagram of the structure of the third pin portion provided in an embodiment of the present application;

[0020] Figure 8 A circuit diagram of coils connected in series provided in an embodiment of the present application;

[0021] Fig. 9A circuit diagram of coils connected in parallel provided in an embodiment of the present application;

[0022] Fig.10 A cross-sectional view of an electromagnetic coil device provided in an embodiment of the present application;

[0023] Fig.11 This is a schematic diagram of the structure of the gas valve provided in an embodiment of the present application.

[0024] Reference numerals:

[0025] A-Electromagnetic coil device

[0026] 1- first winding part;

[0027] 11- first skeleton;

[0028] 111-first connection port;

[0029] 112- second connection port;

[0030] 113-First plate-like part;

[0031] 113a- flat plate portion;

[0032] 113b - recessed portion;

[0033] 113c-depressed plate wall;

[0034] 113d-depression;

[0035] 113e-protrusion;

[0036] 113f-side end surface;

[0037] 113g - first extension wall;

[0038] 113h - second extension wall;

[0039] 113i-first winding inlet;

[0040] 113j-first winding exit;

[0041] 113k-side wall;

[0042] 12- first winding;

[0043] 2-second winding component;

[0044] 21 - second skeleton;

[0045] 211-third connection port;

[0046] 212- fourth connection port;

[0047] 213-Second plate;

[0048] 213a- notch portion;

[0049] 213b-matching board wall;

[0050] 213c-notch end surface;

[0051] 213d-notched siding;

[0052] 213e- second winding inlet;

[0053] 213f-second winding exit;

[0054] 213g-margin;

[0055] 22- second winding;

[0056] 3- first pin portion;

[0057] 4- second pin portion;

[0058] 5- the third pin portion;

[0059] 51-first pin end;

[0060] 52- second pin end;

[0061] 6- housing;

[0062] 61- cavity;

[0063] 7-encapsulation layer;

[0064] 8-proportional adjustment device;

[0065] 9-Differential pressure regulating device.

[0066] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application. DETAILED DESCRIPTION

[0067] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0068] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0069] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0070] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0071] It should be noted that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described at the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element.

[0072] Gas valves are widely used in various industries due to their flexible on-off functions. They are also important components of industrial automation control systems and pipeline transmission. Usually, for example, a gas proportional valve has two coils in the valve body, and each coil is connected to a different controller. By controlling different controllers, the ratio of gas and air can be adjusted. Each coil usually has a rated voltage, that is, the coil can only work normally under a specific electrical connection method. For example, the rated voltage of the coil is 110V. When installing the gas valve, each coil needs to be connected to a power supply with an output voltage of 110V so that the gas valve can work normally as a whole. When the output voltage of the power supply is not 110V, the gas valve cannot work normally, resulting in restrictions on the use of the gas valve.

[0073] In view of this, an embodiment of the present application provides an electromagnetic coil device and a gas valve, so that the electromagnetic coil can be suitable for different electrical connection methods.

[0074] like Figure 1As shown, an embodiment of the present application provides an electromagnetic coil device A, which may include a first winding component 1 and a second winding component 2, wherein the first winding component 1 includes a first skeleton 11, and the second winding component 2 includes a second skeleton 21, and the first skeleton 11 and the second skeleton 21 are limitedly connected so that the positions of the first skeleton 11 and the second skeleton 21 are relatively fixed, and the two can be fixedly connected or detachably connected. The first skeleton 11 has a first connection port 111 and a second connection port 112, and the second skeleton 21 has a third connection port 211 and a fourth connection port 212, the first connection port 111 is far away from the second skeleton 21, and the second connection port 112 is close to the second skeleton 21; the third connection port 211 is close to the first skeleton 11, and the fourth connection port 212 is far away from the first skeleton 11. Specifically, as Figure 2 and Figure 4 As shown, the first connection port 111 , the second connection port 112 , the third connection port 211 and the fourth connection port 212 may be arranged in sequence along the length direction Y of the electromagnetic coil device A. As shown in FIG.

[0075] The electromagnetic coil device A further comprises a first pin portion 3, a second pin portion 4 and a third pin portion 5, wherein the first pin portion 3 is fixedly connected to the first connection port 111, and the second pin portion 4 is fixedly connected to the fourth connection port 212. Figure 7 As shown, the third pin portion 5 includes a first pin end 51 and a second pin end 52 , the first pin end 51 is fixedly connected to the second connection port 112 , and the second pin end 52 is fixedly connected to the third connection port 211 .

[0076] When the first winding component 1 and the second winding component 2 form a series state, the first pin part 3 is connected to one end of the power supply, the second pin part 4 is connected to the other end of the power supply, and the third pin part 5 is empty, that is, the third pin part 5 is not connected to the power supply and is only used for the electrical connection between the first winding component 1 and the second winding component 2.

[0077] When the first winding component 1 and the second winding component 2 are connected in parallel, the third pin portion 5 is connected to one end of the power supply, and the first pin portion 3 and the second pin portion 4 are connected to the other end of the power supply.

[0078] The electromagnetic coil device A provided in the embodiment of the present application makes the first winding component 1 and the second winding component 2 electrically connected to the third pin portion 5 at the same time, so that the connection method of the electromagnetic coil device A is more flexible, so that the electromagnetic coil device A can be applied to different electrical connection methods. The electromagnetic coil device A can be applied to different voltage environments by changing the electrical connection method of the first winding component 1 and the second winding component 2.

[0079] like Figure 8As shown, in a specific embodiment, the rated voltage of the first winding component 1 and the second winding component 2 is 110V. When the output voltage of the power supply is 220V, the first winding component 1 and the second winding component 2 need to be connected in series to divide the voltage so that the first winding component 1 and the second winding component 2 can both be under the rated voltage condition, so that the electromagnetic coil device A can work normally. Specifically, the first pin portion 3 of the first winding component 1 is connected to the positive pole of the power supply, and the second pin portion 4 of the second winding component 2 is connected to the negative pole of the power supply. The current flows out from the positive pole of the power supply, flows into the first winding component 1 through the first pin portion 3, then flows into the second winding component 2 through the third pin portion 5, and finally flows into the negative pole of the power supply through the second pin portion 4. The first winding component 1 and the second winding component 2 are connected in series so that the voltage environment of the first winding component 1 and the second winding component 2 is both 110V.

[0080] like Fig. 9 As shown, in a specific embodiment, the rated voltage of the first winding component 1 and the second winding component 2 is 110V. When the output voltage of the power supply is 110V, the first winding component 1 and the second winding component 2 are both under the condition of the rated voltage, and the first winding component 1 and the second winding component 2 need to be connected in parallel. Specifically, the third pin portion 5 can be connected to the negative pole of the power supply, and the first pin portion 3 and the second pin portion 4 are connected to the positive pole of the power supply. The current flows out from the positive pole of the power supply and can simultaneously flow into the first winding component 1 through the first pin portion 3, flow into the second winding component 2 through the second pin portion 4, and flow into the negative pole of the power supply through the third pin portion 5. The first winding component 1 and the second winding component 2 are connected in parallel, so that the voltage environment of the first winding component 1 and the second winding component 2 is both 110V.

[0081] The electromagnetic coil device A provided in the embodiment of the present application can effectively reduce the number of pin parts of the electromagnetic coil device A as a whole by setting a common third pin part 5. When the first winding component 1 and the second winding component 2 need to be connected in series, there is no need to additionally electrically connect one of the pin parts of the first winding component 1 with one of the pin parts of the second winding component 2, which is more convenient in use; when the first winding component 1 and the second winding component 2 need to be connected in parallel, the first winding component 1 and the second winding component 2 can be connected to the positive or negative pole of the power supply at the same time through the third pin part 5, which can effectively reduce the connection steps and better meet actual needs.

[0082] like Figure 2 and Figure 5 As shown, in a specific embodiment, the first skeleton 11 includes a first plate-shaped portion 113, the second skeleton 21 includes a second plate-shaped portion 213, the first plate-shaped portion 113 and the second plate-shaped portion 213 are abutted against each other, the first plate-shaped portion 113 has a first interface and a second interface, and the second plate-shaped portion 213 is provided with a third interface and a fourth interface.

[0083] Such a design can facilitate the connection between the first winding component 1 and the second winding component 2. The first pin portion 3, the second pin portion 4 and the third pin portion 5 are respectively installed on the electromagnetic coil device A through the first plate-like portion 113 and / or the second plate-like portion 213, which can facilitate the optimization of the structure of the electromagnetic coil device A and reduce the interference with the winding of the first winding component 1 and the second winding component 2.

[0084] like Figure 2 and Figure 5 As shown, in a specific embodiment, the first plate-like portion 113 includes a flat portion 113a and a recessed portion 113b. Along the height direction of the electromagnetic coil, the recessed portion 113b is lower than the position of the plane where the flat portion 113a is located. The recessed portion 113b has a recessed plate wall 113c, a recessed mouth 113d and a protruding portion 113e. The protruding portion 113e is arranged on the recessed plate wall 113c. The protruding portion 113e is higher than the plane position where the recessed portion 113b is located. A recessed mouth 113d is formed between the flat portion 113a and the protruding portion 113e. The second plate-like portion 213 may include a notch portion 213a and a matching plate wall 213b. The protruding portion 113e cooperates with the notch portion 213a, and the recessed plate wall 113c is against the matching plate wall 213b.

[0085] When connecting the first frame 11 and the second frame 21, at least part of the protrusion 113e is located in the notch 213a to facilitate positioning during connection and improve the relative position accuracy of the first frame 11 and the second frame 21. The recess 113d formed between the flat plate 113a and the protrusion 113e can be used for guidance when setting the winding.

[0086] like Figure 2 , Figure 3 and Figure 6 As shown, in a specific embodiment, the notch portion 213a includes a notch end face 213c and a notch plate wall 213d, and the protruding portion 113e has a side end face 113f, and the side end face 113f abuts against the notch end face 213c. The recessed plate wall 113c also includes a first extension wall 113g and a second extension wall 113h, and the second plate-shaped portion 213 includes a first matching wall and a second matching wall, wherein the first extension wall 113g abuts against the first matching wall, and the second extension wall 113h abuts against the second matching wall.

[0087] Such a design can increase the contact area between the first skeleton 11 and the second skeleton 21, which can not only improve the stability of the connection between the first skeleton 11 and the second skeleton 21, but also the abutment between the first extension wall 113g and the first matching wall, and the abutment between the second extension wall 113h and the second matching wall can be used for positioning to improve the relative position accuracy between the first skeleton 11 and the second skeleton 21.

[0088] As Figure 2 shown, in a specific embodiment, the first winding component 1 includes a first winding 12. Specifically, the first winding 12 is wound around the first skeleton 11. The flat plate portion 113a is provided with a first wire winding outlet 113j, and the first wire winding outlet 113j is relatively close to the first connection port 111. The first plate-like portion 113 further includes a first wire winding inlet 113i. Specifically, the recessed opening 113d can be used as the first wire winding inlet 113i.

[0089] Such a design is more convenient for guiding the first winding 12 when winding the first winding 12, so as to improve the accuracy of winding the first winding 12. The first wire winding outlet 113j is arranged close to the first connection port 111, so that the first wire winding outlet 113j can be close to the first pin portion 3. Such a design can facilitate the connection between the first winding 12 and the first pin portion 3 after the first winding 12 is wound around the first skeleton 11. Forming the first wire winding inlet 113i through the recessed opening 113d can reduce the processing steps of setting the first wire winding inlet 113i, which is more convenient during processing and improves the processing efficiency.

[0090] As Figure 2 shown, in a specific embodiment, a side wall is formed between the flat plate portion 113a and the recessed portion 113b, and the first winding 12 is wound around the body of the first skeleton 11 along the side wall through the first wire winding inlet 113i.

[0091] The side wall can be used to guide the first winding 12, so as to facilitate the first winding 12 to be wound around the body of the first skeleton 11 and improve the accuracy of winding the first winding 12.

[0092] As Figure 4 shown, in a specific embodiment, the second winding component 2 further includes a second winding 22. The second winding is wound around the second skeleton 21. The second plate-like portion 213 is provided with a second wire winding inlet 213e and a second wire winding outlet 213f, and the second wire winding outlet 213f is closer to the third pin portion 5 than the second wire winding inlet 213e.

[0093] Such a design is more convenient for connecting the second winding 22 with the third pin portion 5. At the same time, the second wire winding inlet 213e can be far away from the third pin portion 5 to reduce the possibility of the second winding 22 contacting the third pin portion 5 at the beginning of winding, thereby reducing the possibility of the second winding component 2 short-circuiting.

[0094] As Figure 4 shown, in a specific embodiment, the second winding 22 is wound around the second skeleton 21. The second plate-like portion 213 includes an edge portion 213g, and the edge portion 213g is provided with a groove to form the second wire winding inlet 213e.

[0095] A groove is provided at the edge portion 213 g to form a second winding inlet 213 e capable of guiding the second winding 22 , thereby improving the winding stability of the second winding 22 .

[0096] like Fig.10 As shown, in a specific embodiment, the electromagnetic coil device A further comprises a shell 6 and an encapsulation layer 7, wherein the encapsulation layer 7 is located outside the first winding component 1 and the second winding component 2, and integrally encapsulates the first winding component 1 and the second winding component 2. The first winding component 1, the second winding component 2 and the encapsulation layer 7 are located in the cavity 61 of the shell 6, so that the shell 6 can protect the first winding component 1 and the second winding component 2.

[0097] Based on the electromagnetic coil device A provided in the above embodiments, Fig.11 As shown, the embodiment of the present application further provides a gas valve, which has a valve body, an electromagnetic drive device, a proportional adjustment device 8 and a pressure difference adjustment device 9. The valve body is provided with a first valve port and a second valve port, wherein the electromagnetic drive device has an electromagnetic coil device A, a first electromagnetic drive member and a second electromagnetic drive member, the first electromagnetic drive member includes a first valve plug, the second electromagnetic drive member includes a second valve plug, the first valve plug can approach or move away from the first valve port, and the second valve plug can approach or move away from the second valve port. The electromagnetic coil device A is the electromagnetic coil device A involved in any of the above embodiments. Since the electromagnetic coil device A has the above technical effects, the gas valve including the electromagnetic coil device A also has the above technical effects, which will not be repeated here.

[0098] An electromagnetic coil device A and a gas valve are provided in an embodiment of the present application. The electromagnetic coil device A comprises at least a first winding component 1 and a second winding component 2. The first skeleton 11 of the first winding component 1 is provided with a first connection port 111 and a second connection port 112. The second skeleton 21 of the second winding component 2 is provided with a third connection port 211 and a fourth connection port 212. The electromagnetic coil device A also comprises a first pin portion 3, a second pin portion 4 and a third pin portion 5. The first pin portion 3 is connected to the first connection port 111, the second pin portion 4 is connected to the fourth connection port 212, and the third pin portion 5 is connected to the second connection port 112 and the third connection port 211 at the same time. Such a design can make the electrical connection method between the first winding component 1 and the second winding component 2 more flexible.

[0099] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An electromagnetic coil device, It is characterized in that The invention comprises a first winding component and a second winding component, wherein the first winding component comprises a first frame, the second winding component comprises a second frame, the first frame and the second frame are connected in a limited manner, the first frame is provided with a first connection port and a second connection port, and the second frame is provided with a third connection port and a fourth connection port; The first connection port is far away from the second frame, and the second connection port is close to the second frame; The third connection port is close to the first frame, and the fourth connection port is far from the first frame; The electromagnetic coil device further comprises a first pin portion, a second pin portion, and a third pin portion, wherein the first pin portion is fixedly connected to the first connection port, the second pin portion is fixedly connected to the fourth connection port, and the third pin portion comprises a first pin end and a second pin end, the first pin end is fixedly connected to the second connection port, and the second pin end is fixedly connected to the third connection port; When the first winding component and the second winding component form a series connection state, the first pin portion is connected to one end of a power source, the second pin portion is connected to the other end of the power source, and the third pin portion is not connected to the power source; When the first winding component and the second winding component are connected in parallel, the third pin portion is connected to one end of the power source, and the first pin portion and the second pin portion are connected to the other end of the power source.

2. The electromagnetic coil device according to claim 1, It is characterized in that The first frame includes a first plate-shaped portion, the second frame includes a second plate-shaped portion, the first plate-shaped portion abuts against the second plate-shaped portion, the first plate-shaped portion is provided with the first connection port and the second connection port, and the second plate-shaped portion is provided with the third connection port and the fourth connection port.

3. The electromagnetic coil device according to claim 2, It is characterized in that The first plate-like portion includes a flat portion and a recessed portion, wherein the recessed portion is lower than the plane position where the flat portion is located, and the recessed portion has a recessed plate wall, a recessed mouth and a raised portion, wherein the raised portion is higher than the plane position where the recessed portion is located, and the recessed mouth is formed between the flat portion and the raised portion, and the second plate-like portion includes a notch portion and a matching plate wall, wherein the raised portion is matched with the notch portion, and the recessed plate wall is against the matching plate wall.

4. The electromagnetic coil device according to claim 3, It is characterized in that The notch portion includes a notch end face and a notch plate wall, the raised portion has a side end face, the side end face abuts against the notch end face, the recessed plate wall also includes a first extension wall and a second extension wall, the second plate-shaped portion includes a first matching wall and a second matching wall, the first extension wall abuts against the first matching wall, and the second extension wall abuts against the second matching wall.

5. The electromagnetic coil device according to claim 3, It is characterized in that The first winding component includes a first winding, which is wound around the first frame. The flat plate portion is provided with a first winding outlet, which is relatively close to the first connecting port. The first plate-shaped portion includes a first winding inlet, and the recessed port forms the first winding inlet.

6. The electromagnetic coil device according to claim 5, It is characterized in that A side wall is formed between the flat plate portion and the recessed portion, and the first winding is wound around the main body of the first frame along the side wall through the first winding inlet.

7. The electromagnetic coil device according to claim 3, It is characterized in that The second winding component includes a second winding, which is wound around the second skeleton. The second plate-shaped portion is provided with a second winding inlet and a second winding outlet. The second winding inlet is relatively close to the second pin portion, and the second winding outlet is relatively close to the third pin portion.

8. The electromagnetic coil device according to claim 7, It is characterized in that The second plate-shaped portion includes an edge portion, the edge portion is provided with a groove, and the groove forms the second winding inlet.

9. The electromagnetic coil device according to any one of claims 1 to 8, It is characterized in that The electromagnetic coil device further includes a shell and an encapsulating layer, wherein the encapsulating layer integrally encapsulates the first winding component and the second winding component, and the shell has a cavity, wherein the first winding component, the second winding component and the encapsulating layer are located in the cavity.

10. A gas valve, It is characterized in that A valve body is provided with a first valve port and a second valve port, and further comprises an electromagnetic drive device, a proportional adjustment device and a pressure difference adjustment device, wherein the electromagnetic drive device comprises an electromagnetic coil device, and further comprises a first electromagnetic drive member and a second electromagnetic drive member, wherein the first electromagnetic drive member comprises a first valve plug, and the second electromagnetic drive member comprises a second valve plug, wherein the first valve plug can approach or move away from the first valve port, and the second valve plug can approach or move away from the second valve port; Wherein, the electromagnetic coil device is the electromagnetic coil device according to any one of claims 1-9.

Images