CN216692372U - Gas valve - Google Patents

Abstract

This application is through optimizing improvement to the electromagnetic drive subassembly of gas valve, including first plunger part, second plunger part, upper portion magnetic conduction board and lower part magnetic conduction board, first plunger part passes through upper portion magnetic conduction board magnetism conduction with second plunger part, first plunger part passes through lower part magnetic conduction board magnetism conduction with second plunger part, one of them of first plunger part and second plunger part between them is equipped with the head portion, the at least part of head portion is located the mounting hole of upper portion magnetic conduction board, under the circular telegram effect, can reduce the condition that is influenced by the power grid voltage fluctuation relatively, keep the stability of valve port aperture.

Description

Gas valve

[ technical field ] A method for producing a semiconductor device

The application relates to the technical field of gas control, in particular to a gas valve.

[ background of the utility model ]

The gas valve is generally applied to a gas system to regulate the flow of gas flowing to a combustion chamber or a combustor, and comprises an electromagnetic driving assembly in the market, wherein the electromagnetic driving assembly comprises a first electromagnetic driving part and a second electromagnetic driving part, the gas valve comprises a valve body, the valve body is provided with a first valve opening part and a second valve opening part, one of the first electromagnetic driving part and the second electromagnetic driving part is provided with a coil component, the coil component is in an electrified state and transmits magnetic force to the other through a magnetic conducting component, so that the first valve opening part is correspondingly opened by the first electromagnetic driving part, the second valve opening part is correspondingly opened by the second electromagnetic driving part, and for a person skilled in the art, the influence of voltage fluctuation needs to be reduced as much as possible, and the technical problem to be solved needs to be ensured for the actuation stability of the electromagnetic driving assembly.

[ Utility model ] content

The utility model aims to provide a gas valve which can relatively reduce the influence of voltage fluctuation and ensure the actuating stability of an electromagnetic driving assembly.

The application provides a gas valve, characterized by, including electromagnetic drive assembly, electromagnetic drive assembly includes first plunger part, second plunger part, coil part and upper portion magnetic conductive plate, the coil part is located the peripheral part of first plunger part or second plunger part, first plunger part passes through with the second plunger part upper portion magnetic conductive plate magnetic conduction, the quantity of coil part is one;

the first plunger part comprises a first end enclosure part, the upper magnetic conduction plate is provided with a first installation hole part, and at least part of the first end enclosure part is positioned in the first installation hole part.

The application provides a gas valve, including electromagnetic drive assembly, electromagnetic drive assembly includes first plunger part, second plunger part, coil part and upper portion magnetic conductive plate, the coil part is located the peripheral part of first plunger part or second plunger part, first plunger part passes through with the second plunger part the magnetic conduction of upper portion magnetic conductive plate, the quantity of coil part is one;

the utility model discloses a magnetic conduction plate, including upper portion magnetic conduction plate, this upper portion magnetic conduction plate includes noumenon portion, first depressed part and second depressed part, first depressed part certainly noumenon portion undercut, second depressed part certainly noumenon portion undercut, first plunger part includes first sleeve portion, first sleeve portion is including the first sleeve terminal surface portion of closed form, second plunger part includes second sleeve portion, second sleeve portion is including the second sleeve terminal surface portion of closed form, the lower terminal surface of first depressed part with first sleeve terminal surface portion is direct or indirect offset, the lower terminal surface of second depressed part with second sleeve terminal surface portion is direct or indirect offset, and this application can reduce the influence that receives voltage fluctuation through the optimal design to the electromagnetic drive subassembly structure of gas valve, ensures electromagnetic drive subassembly's actuation stability relatively.

[ description of the drawings ]

FIG. 1 is a cross-sectional view of the overall construction of a gas valve incorporating the construction of an electromagnetic drive assembly according to a first embodiment of the present application;

FIG. 2 is an enlarged schematic view of the electromagnetic drive assembly of FIG. 1;

FIG. 3 is a second embodiment of an electromagnetic drive assembly for a gas valve provided herein;

fig. 4 is a schematic perspective view of the upper magnetic conductive plate of fig. 3;

FIG. 5 is a third embodiment of an electromagnetic drive assembly for a gas valve provided herein;

FIG. 6 is a fourth embodiment of an electromagnetic drive assembly for a gas valve provided herein;

FIG. 7 is an overall structural sectional view of a gas valve to which the electromagnetic drive assembly structure of the fifth embodiment is applied;

FIG. 8 is an enlarged schematic view of the electromagnetic drive assembly of FIG. 7;

[ detailed description ] A

In order to make those skilled in the art better understand the technical solution provided by the present application, the following detailed description is made on the technical solution of the present application in conjunction with the accompanying drawings and specific embodiments, the present application focuses on the optimized design and protection of the structure of the electromagnetic driving assembly of the gas valve, and the adaptive modifications can be made on other components, such as the valve body structure, the pressure regulating device, etc., according to the design or usage environment requirements.

First embodiment

Referring to fig. 1-2, fig. 1 shows a gas valve structure provided by the present application, which includes a gas inlet 1, a gas outlet 2, a valve body 3, a pressure regulating device 4, a pressure difference regulating device 5, and an electromagnetic driving assembly 6, where the electromagnetic driving assembly 6 includes a first plunger member 10a and a second plunger member 20a, the valve body 3 is correspondingly provided with a first valve port 31, a second valve port 32, a proportional regulating valve port, and a pressure difference regulating valve port, a first sealing plug 13a of the first plunger member 10a can be close to or away from the first valve port 31, a second sealing plug 23a of the second plunger member 20a can be close to or away from the second valve port 32, gas enters from the gas inlet 1 and then passes through the first valve port 31 and the second valve port 32, and acts on a back pressure cavity of the pressure difference regulating device 5 under the action of a pressure difference of the pressure regulating device 4, so as to flow out of the main valve port 2.

The structure of the electromagnetic driving assembly 6 is described in detail below, and includes a first plunger component 10a, a second plunger component 20a, a coil component 100, an upper magnetic conductive plate 30a, and a downward magnetic conductive plate 40a, where the coil component 100 includes a coil winding 101 and a coil skeleton 102, the coil winding 101 is wound around an outer periphery of the coil skeleton 102, the coil component 100 is integrally located at an outer periphery of the first plunger component 10a, the outer periphery of the second plunger component 20a is not provided with the coil component, the second plunger component 20a is limited in the skeleton limiting portion 200, the coil skeleton 102 abuts between the upper magnetic conductive plate 30a and the lower magnetic conductive plate 40a, an upper surface of at least a portion of the coil skeleton 102 abuts against a lower surface of the upper magnetic conductive plate 30a, a lower surface of at least a portion of the coil skeleton 102 abuts against an upper surface of the lower magnetic conductive plate 40a, the electromagnetic driving assembly 6 is provided with a first mounting hole and a second mounting hole, a part of the first plunger part 10a is positioned in the first mounting hole, a part of the second plunger part 20a is positioned in the second mounting hole, the framework limiting part 200 abuts between the upper magnetic conduction plate and the lower magnetic conduction plate, the upper magnetic conduction plate 30a can be formed with a first mounting hole part 31a, a second mounting hole part 32a and a third mounting hole part 33a through punching, the coil framework 102 comprises a positioning column 1021 protruding upwards from the coil framework body, and at least a part of the positioning column 1021 is limited in the third mounting hole part 33a so as to better position the upper magnetic conduction plate and prevent the upper magnetic conduction plate from circumferential deviation;

the first plunger component 10a comprises a first iron core 11a, a first sleeve part 12a, a first sealing plug 13a, a first elastic piece 14a and a first sealing head part 15a, the electromagnetic driving component 6 is provided with a first mounting hole and a second mounting hole, the first sleeve part 12a comprises a cylindrical body and a flanging part, at least part of the cylindrical body is positioned in the first mounting hole, the upper part and the lower part of the cylindrical body are both in an open structure, the first sealing head part 15a is fixedly connected with the upper opening part of the cylindrical body of the first sleeve part 12a, and can be fixedly connected in a mode of welding after press-fitting, and the like, part of the first sealing head part 15a is positioned in the inner cavity of the first sleeve part 12a, the other part of the first sealing head part 15a is positioned in the first mounting hole part 31a and can be contacted with the hole wall of the first mounting hole part, the flanging part of the first sleeve part 12a can be pressed between the lower magnetic conduction plate 40a and the valve body 3, the first iron core 11a is embedded with a first sealing plug 13a made of flexible materials, the first elastic piece 14a is elastically abutted between the flanging part of the first sleeve part and the first sealing plug, under the energizing and exciting effects of the coil part 100, the first iron core 11a can be upwards close to the first sealing head part 15a to be attracted with the first sealing head part, so that the first sealing plug 13a is far away from the first valve port 31, when the coil part is powered off, the exciting effect is reduced, and the first iron core 11a downwards acts to enable the first sealing plug 13a to close the first valve port 31;

the second plunger member 20a includes a second iron core 21a, a second sleeve part 22a, a second sealing plug 23a and a second sealing head part 25a, the second sleeve part 22a includes a cylindrical body and a flange part, at least a part of the cylindrical body is located in the second mounting hole, specifically, at least a part of the cylindrical body of the second sleeve part is located in the framework positioning part 200, the upper and lower parts of the cylindrical body are both in an open structure, the second sealing head part 25a is fixedly connected with the upper opening part of the cylindrical body, specifically, can be welded and fixed after press-fitting, a part of the second sealing head part is located in the second sleeve part 22a, another part of the second sealing head part 25a is located in the second mounting hole part 32a and can be contacted with the hole wall of the second mounting hole part, the flange part of the second sleeve part can be pressed between the lower magnetic conductive plate 40a and the valve body 3, in order to fix the electromagnetic driving assembly 6 on the valve body 3 integrally, the lower magnetic conductive plate can be realized by forming a plurality of screw holes and screwing the two through adopting a screw screwing mode The second core 21a and the second sealing head portion 25a can be provided with an elastic component, under the excitation action of the coil component 100, the second core 21a can be close to the second sealing head portion 25a upwards to enable the second sealing plug 23a to be far away from the second valve opening 32, when the coil component is in a non-energized state, the excitation action is reduced, and the second sealing plug 23a closes the second valve opening 32;

to briefly describe the actuation mode of the electromagnetic driving assembly 6, the coil component 100 is energized, under the excitation, the first core 11a drives the first sealing plug 13a to move axially upward to close to the first sealing head 15a, and the upper portions of the first plunger component and the second plunger component, i.e. the first sealing head 15a and the second sealing head 25a, are connected by the upper magnetic conductive plate 30a for magnetic conduction, and the lower portions of the second plunger component and the second plunger component are connected by the lower magnetic conductive plate 40a for magnetic conduction, and through the magnetic conduction of the upper magnetic conductive plate and the lower magnetic conductive plate, a complete magnetic transmission path is formed in the second plunger component 20a, so that the second core 21a drives the second sealing plug 23a to move upward to close to the second sealing head 25a, so as to open the first valve port 31 and the second valve port 32, and when the coil component 100 is de-energized, the excitation is reduced and the first sealing plug 13a closes the first valve port 31 and the second sealing plug 23a closes the second valve port 32.

The upper magnetic conduction plate usually adopts two parallel flanging structures in the traditional structure, the flanging part is sleeved on the peripheral part of the sleeve part to realize the magnetic transmission of the first plunger part and the second plunger part, the air gap between the upper magnetic conduction plate and the iron core is larger in the traditional structure, the attraction between the iron core and the flanging part is generally attracted by lateral traction force under the condition of the power-on state of the coil part, along with the reduction of the voltage fluctuation of a power grid, the condition that the iron core cannot be attracted with the flanging part and moves downwards under the action of gravity and the like can occur, and the condition that the opening degree of an electromagnetic valve is reduced is caused, so that the electromagnetic driving component cannot perform stable actuation.

The application provides a gas valve of new construction, through carrying out configuration optimization to electromagnetic drive subassembly 6, add first closing head portion 15a of first plunger part 10a and second closing head portion 25a of second plunger part 20a, make and carry out axial terminal surface actuation between first closing head portion 15a and first iron core 11a, carry out axial terminal surface actuation between second closing head portion 25a and second iron core 21a, under coil part circular telegram excitation, first closing head portion and first iron core actuation, second closing head portion and second iron core actuation, it is less influenced by the electric wire netting voltage fluctuation, can keep good actuation, make the valve port aperture of first valve port and second valve port of gas valve comparatively stable, guarantee the actuation stability of electromagnetic drive subassembly relatively.

Second embodiment

Referring to fig. 3-4, a second embodiment of the gas valve provided by the present application is described, in which the upper magnetic conductive plate 30b includes a body 31b, a first recessed portion 32b and a second mounting hole portion 33b, the first recessed portion 32b is recessed inward from the surface of the body 31b, at least a portion of the first recessed portion 32b is located in the first mounting hole, the second capped portion 25a is fixedly connected to the second sleeve portion, a portion of the second capped portion 25a is located in the second mounting hole portion 33b, the first sleeve portion 12 is a structure in which one end of the sleeve portion is closed and the other end is open, an end surface of the first recessed portion 32b abuts against the sleeve end portion 121, when the coil member 100 is energized, the upper portions of the first and second plunger members 10 and 20a are connected by the upper magnetic conductive plate 30b to perform a magnetic transmission function, and the lower portions of the first and second plunger members 10 and 20a are connected by the lower magnetic conductive plate to perform a magnetic transmission function With the first core 11 carrying the first sealing plug 13 up to the first recess 32b, the second core 11 contacts the first recess 32b through the closed sleeve end surface portion 121 of the first sleeve portion 12, so that under the action of excitation, the second plunger component, the second core 21a drives the second sealing plug 23a to move upward and close to the second sealing head portion 25a to open the second valve port 32, in this embodiment, the lower end surface of the first recess portion 32b is in axial end surface attraction with the first core 11, the axial end surface attraction is between the second sealing head 25a and the second core 21a, under the action of energization and excitation of the coil part, the first iron core moves upwards to attract the first concave part, the second iron core moves upwards to attract the second sealing head, the influence of voltage fluctuation of a power grid is small, good attraction can be kept, and the opening degrees of the first valve port and the second valve port of the gas valve are stable.

The embodiment can also achieve the technical effects of the present application, and other relevant parts are already described in detail in the first embodiment and are not described again one by one;

third embodiment

A third embodiment of the gas valve according to the present application will be described with reference to fig. 5, which is different from the second embodiment in that the recessed portion and the mounting hole portion of the upper magnetic conductive plate are interchanged, the upper magnetic conductive plate 30c includes a body portion 31c, a first mounting hole portion 33c, and a second recessed portion 32c, the body portion 31c is substantially a flat plate-shaped structure, the second recessed portion 32c is recessed from the surface of the body portion, the electromagnetic driving component is provided with a second mounting hole, at least a portion of the second recessed portion 32c is located in the second mounting hole, the second plunger component 20 in this embodiment includes a second iron core 21, a second sleeve portion 22, and a second sealing plug 23, the second iron core 21 is flexibly fitted with the second sealing plug 23, the second sleeve portion 22 includes a body portion and a flanged portion, the second sleeve portion 22 is substantially open-shaped with one end being a closed sleeve end surface portion 221 and the other end being an open-shaped structure, the body portion of the second sleeve portion is at least partially located in the second mounting hole, the end surface of the second recess 32c contacts with the sleeve end surface portion 221, and the elastic member elastically abuts between the second iron core 21 and the sleeve end surface portion 221, in this embodiment, the first plunger member 10a can refer to the structure of the first embodiment, the first cap portion 15a is partially located in the first mounting hole portion 33c, the first cap portion 15a is fixedly connected with the first sleeve portion 12a, when the coil component 100 is in an energized state, the first iron core 11a drives the first sealing plug 13a to upwardly approach the first head sealing part 15a to form a relatively complete magnetic path, and the second iron core 21 drives the second sealing plug 23 to upwardly approach the second recess 32c to open the second valve opening 32 under the excitation action of the second plunger component 20, so that the technical effects of the present application can be achieved in the present embodiment as well, and the details of the related other components and parts are already described in the first embodiment and are not repeated here;

fourth embodiment

Referring to fig. 6, in the present embodiment, a stationary core 70 is added to the second plunger member of the electromagnetic driving assembly 6, the upper magnetic conductive plate 30d may be formed with a second installation hole portion 31d and a third installation hole portion 32d by punching, the second plunger member 20a includes the stationary core 70, the stationary core 70 is partially located in the third installation hole portion 32d and may contact with an inner peripheral wall thereof, the second plunger member 20a further includes a second core 21a, a second sealing plug 23a and a second sleeve portion 22a, the second sleeve portion 22a includes a closed sleeve end surface portion 221a, the stationary core 70 includes a base portion 71, a protrusion portion 72 and an extension portion 73, the protrusion portion 72 protrudes upward from the base portion 71, the extension portion 73 extends downward from the base portion 71, the extension portion 73 and the base portion 71 substantially form an accommodation cavity of the stationary core 70, a portion of the sleeve end surface portion 221a is located in the accommodation cavity, and a small magnetic gap is realized under excitation of the coil member energized to facilitate the second core 21a and the core 70 to be easily connected to the stationary core 70 Attracting, the protruding portion 72 is arranged corresponding to the third mounting hole portion 32d, at least a portion of the protruding portion 72 is located in the third mounting hole portion 32d, the protruding portion 72 can be limited in the third mounting hole portion in riveting or welding modes to achieve fixed connection with the upper magnetic conductive plate 30d, the first plunger component 10a can refer to the structure in the first embodiment as well, in this embodiment, axial end face attracting is formed between the second iron core 21a and the stationary iron core 70, axial end face attracting is formed between the first iron core 11a and the first end enclosure 15a, under the energizing and exciting effects of the coil component, good attracting can be maintained between the first iron core and the stationary iron core, good attracting can be maintained between the second iron core and the second end enclosure, and the influence of voltage fluctuation of the power grid is small, so that the opening degrees of the first valve port and the second valve port of the gas valve are stable.

The application provides a gas valve, which comprises a first plunger component, a second plunger component, a coil component upper magnetic conduction plate and a lower magnetic conduction plate, wherein the coil component is positioned at the peripheral part of the first plunger component or the second plunger component;

the first plunger part comprises a first head sealing part and a first sleeve part, the first head sealing part is fixedly connected with the first sleeve part, the upper magnetic conducting plate is provided with a first installation hole part, part of the first head sealing part is located in the first installation hole part, and/or the second plunger part comprises a second head sealing part and a second sleeve part, the second head sealing part is fixedly connected with the second sleeve part, the upper magnetic conducting plate is provided with a second installation hole part, and part of the second head sealing part is located in the second installation hole part.

The application provides a gas valve of new construction, through carrying out configuration optimization to electromagnetic drive subassembly 6, add the first head portion 15a of first plunger part 10a, make and carry out axial terminal surface actuation between first head portion 15a and first iron core 11a, under coil part circular telegram excitation, first head portion can keep good actuation with first iron core, second head portion can keep good actuation with the second iron core, it is less influenced by the electric wire netting voltage fluctuation, make the valve port aperture of the first valve port of gas valve and the valve port aperture homoenergetic of the second valve port keep comparatively stable.

Fifth embodiment

Referring to fig. 7-8, a fifth embodiment of the gas valve provided in the present application is described, which is different from the first four embodiments in the structure of the upper magnetic conductive plate and the structures of the first plunger member 10 and the second plunger member 20, wherein the upper magnetic conductive plate 30 includes a first concave portion 31, a second concave portion 32, a flat plate-shaped body portion 33, and a positioning hole portion 34, the first concave portion 31 and the second concave portion 32 are both concave inward from the surface of the flat plate-shaped body portion 33, the first concave portion 31 is a substantially closed concave structure, the second concave portion 32 is a substantially closed concave structure, the first concave portion 31 is disposed corresponding to the first plunger member 10, the second concave portion 32 is disposed corresponding to the second plunger member 20, the positioning post 1021 of the bobbin of the coil member 100 is limited in the positioning hole portion 34, the first concave portion 31 is at least partially disposed in the first mounting hole of the electromagnetic driving component, the second recessed portion 32 is at least partially located in a second mounting hole of the electromagnetic drive component, the first plunger member 10 includes a first sleeve portion 12, the second plunger member 20 includes a second sleeve portion 22, the first sleeve portion 12 is substantially a first sleeve end surface portion 121 with one end being closed and the other end being open, the second sleeve portion 22 is substantially a second sleeve end surface portion 221 with one end being closed and the other end being open, at least a portion of the cylindrical body portion of the first sleeve portion is located in the first mounting hole, at least a portion of the cylindrical body portion of the second sleeve portion is located in the second mounting hole, a lower end surface of the first recessed portion 31 directly or indirectly abuts against the sleeve end surface portion 121, a lower end surface of the second recessed portion 32 directly or indirectly abuts against the sleeve end surface portion 221, and an orthographic projection of the first recessed portion 31 substantially coincides with an orthographic projection of the first sleeve end surface portion 121 on a cross section along a width direction of the gas valve, the orthographic projection of the second recess 32 is approximately overlapped with the orthographic projection of the second sleeve end face 221, the first iron core 11 can form axial end face attraction with the first recess, the second iron core 21 can form axial end face attraction with the second recess, when the coil component 100 is in a power-on state, under the influence of excitation, the first iron core 11 drives the first sealing plug 13 to be close to the first recess 31 upwards to attract with the first recess 31, the first iron core 11 is abutted against the lower end face of the first recess through the first sleeve end face, a magnetic conduction path is formed through the upper magnetic conduction plate, so that the second iron core 21 of the second sleeve component drives the second sealing plug 23 to be close to the second recess 32 upwards to attract with the second recess 32, the second iron core 21 is abutted against the lower end face of the second recess through the second sleeve end face to correspondingly open the first valve port 31 and the second valve port 32 respectively, the embodiment can also enable the first iron core and the first concave part to be well attracted, the second iron core and the second concave part to be well attracted, the influence of voltage fluctuation of a power grid is small, and the opening degree of the first valve port and the opening degree of the second valve port of the gas valve can be kept stable;

the application also provides a gas valve, which comprises a first plunger component, a second plunger component, a coil component upper magnetic conducting plate and a lower magnetic conducting plate, wherein the coil component is positioned at the peripheral part of the first plunger component or the second plunger component;

the upper magnetic conduction plate comprises a body part, a first concave part and a second concave part, the first concave part is downwards concave from the body part, the second concave part is downwards concave from the body part, the gas valve is provided with a first mounting hole and a second mounting hole, at least part of the first concave part is positioned in the first mounting hole, and at least part of the second concave part is positioned in the second mounting hole;

first plunger part includes first sleeve portion, and first sleeve portion includes the first sleeve terminal surface portion of closed form, and second plunger part includes second sleeve portion, and second sleeve portion includes the second sleeve terminal surface portion of closed form, and the lower terminal surface of first depressed part offsets with first sleeve terminal surface portion is direct or indirect, and the lower terminal surface of second depressed part offsets with second sleeve terminal surface portion is direct or indirect.

Sixth embodiment

Referring to the second plunger member structure of the fourth embodiment, the first plunger member of the electromagnetic drive assembly 6 in the present embodiment is provided identically to the second plunger member structure of the fourth embodiment, that is, the first head sealing part of the electromagnetic driving component 6 is a first static iron core, the first sleeve part comprises a closed sleeve end surface part, the lower end wall surface of the first static iron core is abutted against the sleeve end surface part of the first sleeve part, the sleeve end surface part of the first sleeve part is positioned in the first static iron core, the first static iron core comprises a base part and a bulge part, the bulge part protrudes upwards from the base part, the bulge part is arranged corresponding to the first installation hole part, at least part of the bulge part is positioned in the first installation hole part, the bulge part is fixedly connected with the first installation hole part, the detailed structure and the action principle of the second plunger part are detailed in the foregoing description, and the detailed description is omitted, and the technical effects of the utility model can be realized as well;

seventh embodiment

The first plunger member structure of the electromagnetic drive assembly in this embodiment refers to the second plunger member structure of the fourth embodiment, that is, the first head sealing portion of the first plunger member is a first stationary core, the first sleeve portion includes a sleeve end surface portion in a closed shape, a lower end wall surface of the first stationary core abuts against the sleeve end surface portion of the first sleeve portion, the sleeve end surface portion of the first sleeve portion is located in the first stationary core, the first stationary core includes a base portion and a protruding portion, the protruding portion protrudes upward from the base portion, the protruding portion is disposed corresponding to the first mounting hole portion, at least a part of the protruding portion is located in the first mounting hole portion, the protruding portion is fixedly connected to the first mounting hole portion, the second plunger member in this embodiment refers to the second plunger member structure in the third embodiment, the detailed structure and the operation principle of the second plunger member have been described in detail in the foregoing, and are not described one by one, the present embodiment can also achieve the technical effects of the present invention.

It should be noted that, the terms "upper" and "lower" as used herein, or "first" and "second" as used herein, are used as reference in the specification and are introduced for convenience of description; it is not intended to limit the order of the parts, and as described herein, it is within the scope of the present application to provide a closure for one of the first and second plunger members, and to provide a uniform designation for those parts as the function of the same parts is the same between the parts provided by the above-described embodiments. The above detailed description of the gas valve provided in the related art is provided by way of specific embodiments, and the description of the embodiments is only for the purpose of facilitating understanding of the method and the core idea of the present invention, and is not intended to limit the present invention in any way.

Claims (10)

1. A gas valve comprising an electromagnetic drive assembly including a first plunger member, a second plunger member, a coil member and an upper magnetic conductive plate, the coil member being located at an outer peripheral portion of the first plunger member or the second plunger member, the first plunger member and the second plunger member being magnetically conductive through the upper magnetic conductive plate, the number of the coil members being one;

the first plunger part comprises a first head sealing part, the upper magnetic conduction plate is provided with a first installation hole part, and at least part of the first head sealing part is positioned in the first installation hole part.

2. A gas valve as claimed in claim 1, wherein the first plunger member further comprises a first sleeve portion, the first head portion is fixedly connected to the first sleeve portion, the second plunger member comprises a second head portion and a second sleeve portion, the second head portion is fixedly connected to the second sleeve portion, the upper magnetic conductive plate is provided with a second mounting hole portion, and a portion of the second head portion is located in the second mounting hole portion.

3. A gas valve according to claim 1, wherein the first plunger member further comprises a first sleeve portion, the first spigot portion is fixedly connected to the first sleeve portion, the upper magnetic conductive plate comprises a body portion and a second recessed portion, the second recessed portion is recessed inwardly from a surface of the body portion, the electromagnetic drive assembly is provided with a second mounting hole, the second plunger member comprises a second sleeve portion, the second recessed portion is at least partially located in the second mounting hole, the second sleeve portion is at least partially located in the second mounting hole, and an end face of the second recessed portion abuts against a sleeve end face portion of the second sleeve portion, which is in a closed shape.

4. A gas valve as claimed in claim 1, wherein the first plunger member further includes a first sleeve portion, the first cap portion is fixedly connected to the first sleeve portion, the second plunger member includes a stationary core and a second sleeve portion, the second sleeve portion includes a closed sleeve end surface portion, the sleeve end surface portion is located in the stationary core, the stationary core includes a base portion and a protruding portion, the protruding portion protrudes upward from the base portion, the upper magnetic conductive plate is provided with a third mounting hole portion, the third mounting hole portion is provided corresponding to the protruding portion, at least a part of the protruding portion is located in the third mounting hole portion, and the protruding portion is fixedly connected to the third mounting hole portion.

5. A gas valve according to any one of claims 1 to 4, wherein the coil member comprises a coil bobbin, at least a part of an upper end surface of the coil bobbin abuts against the upper magnetic conductive plate, a coil winding is wound around an outer peripheral portion of the coil bobbin, the coil bobbin is provided with a positioning post, the upper magnetic conductive plate is provided with a positioning hole portion, and the positioning post is positioned in the positioning hole portion.

6. A gas valve comprising an electromagnetic drive assembly including a first plunger member, a second plunger member, a coil member and an upper magnetic conductive plate, the coil member being located at an outer peripheral portion of the first plunger member or the second plunger member, the first plunger member and the second plunger member being magnetically conductive through the upper magnetic conductive plate, the number of the coil members being one;

the upper portion magnetic conduction plate comprises a body portion, a first recessed portion and a second recessed portion, the first recessed portion is recessed downwards from the body portion, the second recessed portion is recessed downwards from the body portion, the first plunger part comprises a first sleeve portion, the first sleeve portion comprises a first sleeve end face portion in a closed shape, the second plunger part comprises a second sleeve portion, the second sleeve portion comprises a second sleeve end face portion in a closed shape, the lower end face of the first recessed portion is directly or indirectly abutted to the first sleeve end face portion, and the lower end face of the second recessed portion is directly or indirectly abutted to the second sleeve end face portion.

7. A gas valve as claimed in claim 6, wherein the electromagnetic drive assembly includes a first mounting aperture and a second mounting aperture, the first recess being at least partially located in the first mounting aperture, the second recess being at least partially located in the second mounting aperture, part of the first sleeve portion being located in the first mounting aperture and part of the second sleeve portion being located in the second mounting aperture.

8. A gas valve according to claim 6, wherein the first plunger member comprises a first core and the second plunger member comprises a second core, the lower end face of the first recess being abuttable to the first core by the first sleeve end face portion and the lower end face of the second recess being abuttable to the second core by the second sleeve end face portion.

9. The gas valve as claimed in claim 6, wherein the first sleeve portion has a substantially closed end and an open end, the second sleeve portion has a substantially closed end and an open end, and the upper magnetic conductive plate is integrally formed by drawing.

10. A gas valve according to any one of claims 6 to 9, wherein, in a cross-section taken across the width of the gas valve, an orthographic projection of the first recess portion substantially coincides with an orthographic projection of the first sleeve end face portion, and an orthographic projection of the second recess portion substantially coincides with an orthographic projection of the second sleeve end face portion.

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