CN222823816U - Zero pressure gas solenoid valve and gas appliances - Google Patents

Abstract

The utility model discloses a zero-pressure gas electromagnetic valve and a gas appliance, wherein the gas electromagnetic valve comprises an electromagnetic driving device, a valve cap, a valve core and a first elastic piece, the back surface of the valve cap is provided with an inserting groove, the front surface of the valve cap is provided with a gas guide hole communicated with the inserting groove, one end of the valve core is slidably inserted into the electromagnetic driving device, the other end of the valve core is inserted into the inserting groove, a balance gas channel is arranged between the valve core and the side wall of the inserting groove, a driving structure is arranged between the other end of the valve core and the side wall of the inserting groove, a step surface is arranged on the valve core, the first elastic piece is arranged between the valve core and the electromagnetic driving device, and in the process that the electromagnetic driving device drives the valve core to move towards the electromagnetic driving device, the valve core firstly opens the gas guide hole and the balance gas channel, and then the valve core drives the valve cap to move through the driving structure. The gas electromagnetic valve provided by the utility model can effectively reduce the opening difficulty of the gas electromagnetic valve, reduce the power consumption and reduce the situation that a gas appliance cannot open the electromagnetic valve.

Description

Zero-pressure gas electromagnetic valve and gas appliance

Technical Field

The utility model relates to the technical field of gas electromagnetic valves, in particular to a zero-pressure gas electromagnetic valve and a gas appliance.

Background

Gas solenoid valves are widely used in gas appliances such as gas pipelines, gas stoves, gas water heaters and the like. Wherein, the gas utensil is provided with a valve body, sets up gas and gets into the chamber and go out the chamber with gas in the valve body, and gas gets into the chamber and goes out the chamber with gas and go out the chamber and pass through a intercommunicating pore intercommunication, and the solenoid valve is installed on the valve body outer wall, and the case of solenoid valve inserts gas and gets into the chamber, and fixed mounting has a valve cap on the case, and the valve cap is located gas and gets into the intracavity, can drive the case through the solenoid valve and slide back and forth, and then makes the front of valve cap be close to close the intercommunicating pore or keep away from open the intercommunicating pore. The pressure that the gas got into the chamber will be greater than the pressure that the gas got out the chamber behind the communication hole is closed to the valve cap to current this kind of gas solenoid valve for the gas pressure that the back of valve cap bore is greater than the positive pressure that bears of valve cap, and the gas solenoid valve needs to overcome the gas pressure differential that the valve cap received just can drive the valve core and drive the valve cap and keep away from the communication hole, opens the degree of difficulty great, in addition, along with the gas flow area increase (the increase of circulation hole size), the pressure that the gas got into the chamber increases of gas utensil, the gas pressure differential that the valve cap bore is also bigger, and the degree of difficulty increases when the gas solenoid valve is opened, the condition that the gas utensil can't open the solenoid valve appears more easily.

Disclosure of utility model

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the zero-pressure gas electromagnetic valve provided by the utility model can effectively reduce the opening difficulty of the gas electromagnetic valve and reduce the situation that a gas appliance cannot open the electromagnetic valve.

The utility model also provides a gas appliance with the zero-pressure gas electromagnetic valve.

According to the zero-pressure gas electromagnetic valve, the zero-pressure gas electromagnetic valve comprises an electromagnetic driving device, a valve cap, a valve core and a first elastic piece, wherein an insertion groove is formed in the back surface of the valve cap, an air guide hole communicated with the insertion groove is formed in the front surface of the valve cap, one end of the valve core is slidably inserted into the electromagnetic driving device, the other end of the valve core is inserted into the insertion groove, a balance air passage is formed between the valve core and the side wall of the insertion groove, a driving structure is arranged between the other end of the valve core and the side wall of the insertion groove, a step surface is arranged on the valve core, the first elastic piece is arranged between the valve core and the electromagnetic driving device, when the other end of the valve core abuts against the bottom wall of the insertion groove and closes the air guide hole, the step surface abuts against the valve cap and closes the balance air passage, the valve core opens the air guide hole and the balance air passage firstly in the moving process of the valve core towards the electromagnetic driving device, and then the valve core drives the balance air guide hole and the air passage to move through the valve cap.

According to the zero-pressure gas electromagnetic valve, the zero-pressure gas electromagnetic valve has the advantages that through the arrangement, in the process of opening the gas electromagnetic valve, the electromagnetic driving device drives the valve core to move towards the electromagnetic driving device to be close, in the process, the valve core firstly slides away from the gas vent to open the gas vent so as to enable the gas vent to be communicated with the balance air passage, so that the gas pressure on the front side of the balance valve bonnet and the back side of the balance valve is balanced, then the valve core pulls the valve bonnet through the driving structure, in the whole opening process, the gas pressure difference born by the valve core when the valve core moves towards the electromagnetic driving device is small, and the valve core is pulled back after the gas pressure on the two sides of the valve bonnet is balanced, so that the gas pressure difference to be overcome by pulling the valve bonnet is small and even zero, the zero-pressure opening of the electromagnetic valve is realized, the opening difficulty of the gas electromagnetic valve is greatly reduced, the condition that the gas electromagnetic valve cannot be opened is reduced, in addition, when the other end of the valve core is abutted against the bottom wall of an insertion groove and seals the gas vent, the step face is abutted against the valve bonnet and seals the balance air passage, the condition that gas leakage from the gas vent is reduced, and the gas leakage from the valve is avoided.

According to some embodiments of the utility model, the insertion groove comprises a balance cavity arranged in the valve cap and an insertion hole arranged on the back surface of the valve cap, the air guide hole, the insertion hole and the balance cavity are communicated, the valve core is inserted into the balance cavity from the insertion hole, the balance air passage is positioned between the side wall of the insertion hole and the valve core, the driving structure comprises a pushing part arranged in the valve core, the pushing part is positioned in the balance cavity, and the pushing part can be mutually matched and abutted with the side wall, close to the electromagnetic driving device, of the balance cavity.

According to some embodiments of the utility model, the pushing portion has a size larger than a size of the insertion hole, and the pushing portion has a size smaller than a size of the balancing chamber.

According to some embodiments of the utility model, the valve core includes a main shaft and an insertion column, one end of the main shaft is inserted into the electromagnetic driving device, the step surface is located on the other end of the main shaft, the insertion column extends and protrudes from the other end of the main shaft, the insertion column is inserted into the insertion hole, the pushing part is arranged on the insertion column, and the mounting part is arranged on the main shaft.

According to some embodiments of the utility model, the valve core is provided with a mounting part, the first elastic piece is a first spring, the first spring is sleeved on the valve core, one end of the first spring is abutted against the electromagnetic driving device, and the other end of the first spring is abutted against the mounting part.

According to some embodiments of the utility model, a second elastic member is disposed between the bonnet and the electromagnetic drive, the second elastic member being configured to urge the bonnet to move away from the electromagnetic drive.

According to some embodiments of the utility model, the second elastic member is a second spring, the second spring is sleeved on the valve core, one end of the second spring abuts against the valve cap, and the other end of the second spring abuts against the electromagnetic driving device.

According to some embodiments of the utility model, the electromagnetic driving device comprises a bracket and an electromagnetic coil, wherein the electromagnetic coil is installed on the bracket, a part of the bracket is positioned on the front side of the electromagnetic coil, the valve cap is positioned on the front side of the bracket, the valve core is inserted into the bracket and the electromagnetic coil, one end of the first spring is abutted against the bracket, and the other end of the second spring is abutted against the bracket.

According to some embodiments of the utility model, the balance airway is a groove provided on a sidewall of the insertion hole.

According to some embodiments of the utility model, a reinforcing plate is attached to the back of the valve cap, the reinforcing plate is provided with a avoidance hole, the valve core is arranged in the avoidance hole in a penetrating mode, and the second spring is abutted to the reinforcing plate.

According to the gas appliance, the zero-pressure gas electromagnetic valve and the valve body are arranged, the valve body is provided with a gas inlet cavity and a gas outlet cavity, the gas inlet cavity is communicated with the gas outlet cavity through a communication hole, the electromagnetic driving device is arranged on the valve body, the valve core is inserted into the gas inlet cavity, the valve cap is positioned in the gas inlet cavity, the front face of the valve cap is opposite to the communication hole, and the front face of the valve cap can open and close the communication hole.

The gas appliance at least has the advantages that by adopting the gas electromagnetic valve, the difficulty in opening the gas electromagnetic valve of the gas appliance can be reduced, the condition that the gas appliance cannot open the electromagnetic valve is reduced, the condition that gas in a gas inlet cavity leaks from a gas hole of a valve cap to a gas outlet cavity is also reduced, and gas leakage is reduced.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is an internal schematic diagram of a zero pressure gas solenoid valve according to an embodiment of the utility model;

FIG. 2 is an enlarged view of the zero pressure gas solenoid valve at A shown in FIG. 1;

FIG. 3 is a schematic view of the external structure of the zero pressure gas solenoid valve shown in FIG. 1;

Fig. 4 is a schematic view of the zero-pressure gas solenoid valve shown in fig. 1 when applied to a gas appliance.

Reference numerals:

The electromagnetic driving device 100, the bracket 110, the electromagnetic coil 120, the bonnet 200, the insertion groove 210, the insertion hole 210a, the balance chamber 210b, the gas guide hole 220, the balance gas passage 230, the reinforcing plate 240, the escape hole 241, the valve element 300, the main shaft 300a, the insertion column 300b, the pushing part 310, the stepped surface 320, the mounting part 330, the first elastic member 410, the second elastic member 420, the valve body 500, the gas inlet chamber 510, the gas outlet chamber 520, and the communication hole 530.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1 to 3, the zero-pressure gas solenoid valve according to the first embodiment of the utility model includes an electromagnetic driving device 100, a valve cap 200, a valve core 300, and a first elastic member 410, wherein an insertion groove 210 is formed on the back surface of the valve cap 200, an air vent 220 communicating with the insertion groove 210 is formed on the front surface of the valve cap 200, one end of the valve core 300 is slidably inserted into the electromagnetic driving device 100, the other end of the valve core 300 is inserted into the insertion groove 210, a balance air channel 230 is formed between the valve core 300 and a sidewall of the insertion groove 210, a driving structure is disposed between the other end of the valve core 300 and the sidewall of the insertion groove 210, a step surface 320 is disposed on the valve core 300, the first elastic member 410 is disposed between the valve core 300 and the electromagnetic driving device 100, wherein when the other end of the valve core 300 is driven to abut against the bottom wall of the insertion groove 210 and close the air vent 220, the step surface 320 abuts against the valve cap 200 and closes the balance air channel 230, the valve core 300 is driven by the electromagnetic driving device 100 to move towards the electromagnetic driving device 100, and the air vent 220 is opened first with the balance air vent 230 so that the air vent 220 communicates with the balance air vent 230, and the valve 300 is driven by the driving structure to move the valve core 200.

Wherein the size of the valve cartridge 300 is much smaller than the size of the bonnet 200, and therefore, the pressure that the electromagnetic drive 100 needs to overcome to drive the valve cartridge 300 to slide closer to the electromagnetic drive 100 is small, and the power required is small.

Through the arrangement, in the process that the gas electromagnetic valve is opened, the electromagnetic driving device 100 drives the valve core 300 to move close to the electromagnetic driving device 100, in the process, the valve core 300 slides away from the gas hole 220 to open the gas hole 220, so that the gas hole 220 is communicated with the balance air flue 230, and the gas pressure on the front side of the balance valve cap 200 and the back side of the balance valve are balanced, then the valve core 300 pulls the valve cap 200 through the driving structure, in the whole opening process, as the valve core 300 is far smaller than the valve cap 200, the gas pressure difference born by the valve core 300 when the valve core 300 moves towards the electromagnetic driving device 100 is small, the valve core 300 is pulled back to the valve cap 200 after the gas pressure on two sides of the valve cap 200 is balanced, the gas pressure difference to be overcome by pulling the valve cap 200 is small and even zero, the opening of the electromagnetic valve is realized, the opening difficulty of the gas electromagnetic valve is greatly reduced, the situation that the gas appliance cannot open the electromagnetic valve is reduced, in addition, when the other end of the valve core 300 is abutted against the bottom wall of the insertion groove 210 and seals the gas hole 220, the step surface 320 is abutted against the valve cap 200 and seals the balance air flue 230, the situation that gas leakage from the gas hole 220 is avoided, the situation of the gas valve cap 220 is reduced, and the setting of the gas valve cap 200 is lowered, and the reliability is avoided.

Referring to fig. 4, a gas appliance according to a second aspect of the present utility model includes the zero-pressure gas solenoid valve and the valve body described above. The electromagnetic driving device 100 is arranged on the valve body 500, the valve core 300 is inserted into the gas inlet cavity 510, the valve cap 200 is positioned in the gas inlet cavity 510, the front surface of the valve cap 200 is opposite to the communication hole 530, and the front surface of the valve cap 200 can open and close the communication hole 530.

Through adopting foretell gas solenoid valve, can reduce the degree of difficulty that gas utensil opened the gas solenoid valve, reduce the unable condition of opening the solenoid valve of gas utensil, moreover, can also reduce the gas that gas got into in the chamber 510 and leak to the condition in the chamber 520 is gone out to the gas from the gas vent 220 of valve cap 200, avoid the setting up of gas vent 220 to reduce valve cap 200 gas tightness, reliability, reduce the gas leakage.

Referring to fig. 1, according to some embodiments of the present utility model, the insertion groove 210 includes a balance cavity 210b disposed in the bonnet 200 and an insertion hole 210a formed on the back of the bonnet 200, the air guide hole 220, the insertion hole 210a and the balance cavity 210b are communicated, the valve core 300 is inserted into the balance cavity 210b from the insertion hole 210a, the balance air channel 230 is located between the side wall of the insertion hole 210a and the valve core 300, the driving structure includes a pushing portion 310 disposed on the valve core 300, the pushing portion 310 is located in the balance cavity 210b, and the pushing portion 310 can be mutually matched and abutted with the side wall of the balance cavity 210b close to the electromagnetic driving device 100. With the above arrangement, the valve element 300 can drive the bonnet 200 to move by the pushing portion 310 in the process that the electromagnetic driving device 100 drives the valve element 300 to move toward the electromagnetic driving device 100.

It should be noted that, the driving structure may also adopt other arrangement modes, for example, the pushing portion 310 may be disposed on the inner side wall of the insertion groove 210, and the driving structure includes a limiting groove disposed on the valve core 300, and the pushing portion 310 is inserted into the limiting groove.

Referring to fig. 1, according to some embodiments of the present utility model, a mounting portion 330 is disposed on a valve core 300, and a first elastic member 410 is a first spring, which is sleeved on the valve core 300, and has one end abutting against the electromagnetic driving device 100 and the other end abutting against the mounting portion 330. By adopting the arrangement, the first spring is convenient to install.

Referring to fig. 1 and 2, according to some embodiments of the present utility model, the valve core 300 includes a main shaft 300a and an insertion post 300b, one end of the main shaft 300a is inserted into the electromagnetic driving device 100, the step surface 320 is located on the other end of the main shaft 300a, the insertion post 300b extends from the other end of the main shaft 300a to protrude, the insertion post 300b is inserted into the insertion hole 210a, the pushing portion 310 is disposed on the insertion post 300b, and the mounting portion 330 is disposed on the main shaft 300a. The main shaft 300a is smaller than the insertion hole 210a in size to limit the insertion of the main shaft 300a into the insertion hole 210a, and meanwhile, a step surface 320 is formed on the other end of the main shaft 300a, the step surface 320 can be used for closing the balance air passage 230, and the bottom end of the insertion column 300b can be used for closing the air guide hole 220, so that when the communication hole is closed, two seals can be formed on the balance cavity 210b, the condition that fuel gas passes through the balance cavity 210b and then leaks from the air guide hole 220 is effectively avoided, and the air tightness when the fuel gas electromagnetic valve closes the communication hole 530 is improved.

Referring to fig. 1 and 2, according to some embodiments of the present utility model, a second elastic member 420 is disposed between the bonnet 200 and the electromagnetic driving device 100, and the second elastic member 420 is used to drive the bonnet 200 to move away from the electromagnetic driving device 100. With the above arrangement, the bonnet 200 can be urged against the closed communication hole 530 by the second elastic member 420.

Referring to fig. 1 and 2, according to some embodiments of the present utility model, the second elastic member 420 is a second spring, which is sleeved on the valve core 300, and one end of the second spring abuts against the valve cap 200, and the other end abuts against the electromagnetic driving device 100. Then, when the second spring urges the bonnet 200 to abut against the closed communication hole 530, the first spring also abuts against the closed communication hole 220, and at this time, the force of the first spring against the bonnet 200 is in the middle of the bonnet 200, and the force of the second spring against the bonnet 200 is around the first spring, whereby the bonnet 200 can more tightly and reliably close the communication hole 530.

Referring to fig. 1 and 2, according to some embodiments of the present utility model, an electromagnetic driving apparatus 100 includes a bracket 110 and an electromagnetic coil 120, the electromagnetic coil 120 is mounted on the bracket 110, a portion of the bracket 110 is located at a front side of the electromagnetic coil 120, a valve cap 200 is located at a front side of the bracket 110, and a valve core 300 is inserted between the bracket 110 and the electromagnetic coil 120. With the above arrangement, when the gas solenoid valve is installed in the gas appliance, the front end of the bracket 110 can be installed to the valve body 500 so that the valve cartridge 300 is inserted into the gas inlet chamber 510 of the valve body 500, and thus, the installation of the gas solenoid valve into the gas appliance can be facilitated.

According to some embodiments of the present utility model, the first spring has one end abutting the bracket 110 and the other end abutting the mounting portion 330, the second spring has one end abutting the bonnet 200, and the second spring has the other end abutting the bracket 110. Therefore, the first spring and the second spring can be installed, and the first spring and the second spring are both positioned outside the electromagnetic driving device 100, so that the first spring and the second spring are convenient to install.

Referring to fig. 1 and 2, according to some embodiments of the present utility model, the balance air passage 230 is a groove provided on a sidewall of the insertion hole 210a, whereby the gas inlet chamber 510 of the valve body 500 may communicate with the balance chamber 210b in the bonnet 200 through the groove.

It should be noted that, in the balance air duct 230, other arrangement may be adopted, for example, a portion of the valve body 300 in the insertion hole 210a may be polygonal, and the insertion hole 210a may be circular, so that a gap exists between the valve body 300 and an inner wall of the insertion hole 210a, and the gap may constitute the balance air duct 230.

Referring to fig. 1, according to some embodiments of the present utility model, the size of the pushing part 310 is larger than the size of the insertion hole 210a, and the size of the pushing part 310 is smaller than the size of the balance cavity 210 b. Thus, the pushing portion 310 can slide back and forth in the balancing cavity 210b, and when the pushing portion 310 abuts against the rear sidewall of the balancing cavity 210b, the pushing portion 310 can drive the bonnet 200 to slide back and close to the electromagnetic driving device 100.

Referring to fig. 1 and 2, according to some embodiments of the present utility model, a reinforcing plate 240 is attached to the back surface of a bonnet 200, a relief hole 241 is formed in the reinforcing plate 240, a valve core 300 is inserted into the relief hole 241, and a second spring abuts against the reinforcing plate 240. Accordingly, when the bonnet 200 abuts against the communication hole 530, the reinforcing plate 240 can prevent the entire bonnet 200 from bending backward, so that the bonnet 200 can abut against the side wall of the communication hole 530, thereby effectively closing the communication hole 530 and reducing the gas leakage.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The present embodiment has been described in detail with reference to the drawings, but the present utility model is not limited to the above embodiment, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit.

Claims (10)

1. A zero pressure gas solenoid valve, comprising:

An electromagnetic drive device (100);

The valve cap (200) is provided with an insertion groove (210) at the back of the valve cap (200), and the front of the valve cap (200) is provided with an air guide hole (220) communicated with the insertion groove (210);

The valve core (300), one end of the valve core (300) is slidably inserted into the electromagnetic driving device (100), the other end of the valve core (300) is inserted into the insertion groove (210), a balance air passage (230) is arranged between the valve core (300) and the side wall of the insertion groove (210), a driving structure is arranged between the other end of the valve core (300) and the side wall of the insertion groove (210), and a step surface (320) is arranged on the valve core (300);

A first elastic member (410) provided between the valve element (300) and the electromagnetic drive apparatus (100);

When the other end of the valve core (300) is abutted and attached to the bottom wall of the insertion groove (210) and is closed by the air guide hole (220), the step surface (320) is abutted and attached to the valve cap (200) and closes the balance air passage (230), the electromagnetic driving device (100) drives the valve core (300) to move towards the electromagnetic driving device (100), the valve core (300) firstly opens the air guide hole (220) and the balance air passage (230) so that the air guide hole (220) is communicated with the balance air passage (230), and the valve core (300) drives the valve cap (200) to move through the driving structure.

2. The zero-pressure gas solenoid valve according to claim 1, wherein the insertion groove (210) comprises a balance cavity (210 b) arranged in the valve cap (200) and an insertion hole (210 a) formed in the back surface of the valve cap (200), the gas guide hole (220), the insertion hole (210 a) and the balance cavity (210 b) are communicated, the valve core (300) is inserted into the balance cavity (210 b) from the insertion hole (210 a), the balance gas channel (230) is positioned between the side wall of the insertion hole (210 a) and the valve core (300), the driving structure comprises a pushing part (310) arranged in the valve core (300), the pushing part (310) is positioned in the balance cavity (210 b), and the pushing part (310) can be mutually matched and abutted with the side wall, close to the electromagnetic driving device (100), of the balance cavity (210 b).

3. The zero-pressure gas solenoid valve according to claim 2, characterized in that the pushing portion (310) has a size larger than the size of the insertion hole (210 a), and the pushing portion (310) has a size smaller than the size of the balancing chamber (210 b).

4. The zero-pressure gas solenoid valve according to claim 2, wherein the valve core (300) is provided with an installation portion (330), the first elastic member (410) is a first spring, the first spring is sleeved on the valve core (300), one end of the first spring is abutted to the electromagnetic driving device (100), and the other end of the first spring is abutted to the installation portion (330).

5. The zero-pressure gas solenoid valve according to claim 4, wherein the valve body (300) includes a main shaft (300 a) and an insertion column (300 b), one end of the main shaft (300 a) is inserted into the electromagnetic driving device (100), the stepped surface (320) is located at the other end of the main shaft (300 a), the insertion column (300 b) extends and protrudes from the other end of the main shaft (300 a), the insertion column (300 b) is inserted into the insertion hole (210 a), the pushing portion (310) is provided in the insertion column (300 b), and the mounting portion (330) is provided in the main shaft (300 a).

6. The zero-pressure gas solenoid valve according to claim 4, characterized in that a second elastic member (420) is provided between the bonnet (200) and the electromagnetic driving device (100), the second elastic member (420) being configured to drive the bonnet (200) to move in a direction away from the electromagnetic driving device (100).

7. The zero-pressure gas solenoid valve according to claim 6, characterized in that said second elastic member (420) is a second spring, said second spring is sleeved on said valve core (300), one end of said second spring is abutted against said valve cap (200), and the other end is abutted against said electromagnetic driving device (100).

8. The zero-pressure gas solenoid valve according to claim 7, wherein the electromagnetic driving device (100) includes a bracket (110) and an electromagnetic coil (120), the electromagnetic coil (120) is mounted on the bracket (110), a portion of the bracket (110) is located at a front side of the electromagnetic coil (120), the valve cap (200) is located at a front side of the bracket (110), the valve core (300) is inserted into the bracket (110) and the electromagnetic coil (120), one end of the first spring is abutted to the bracket (110), and the other end of the second spring is abutted to the bracket (110).

9. The zero-pressure gas solenoid valve according to claim 7, wherein a reinforcing plate (240) is attached to the back of the valve cap (200), an avoidance hole (241) is formed in the reinforcing plate (240), the valve core (300) is inserted into the avoidance hole (241), and the second spring is abutted to the reinforcing plate (240).

10. A gas appliance, comprising:

The valve body (500) is provided with a fuel gas inlet cavity (510) and a fuel gas outlet cavity (520), and the fuel gas inlet cavity (510) is communicated with the fuel gas outlet cavity (520) through a communication hole (530);

The zero-pressure gas solenoid valve according to any one of claims 1 to 8, wherein the electromagnetic drive device (100) is mounted to the valve body (500), the valve element (300) is inserted into the gas inlet chamber (510), the valve cap (200) is located in the gas inlet chamber (510), a front surface of the valve cap (200) is opposite to the communication hole (530), and a front surface of the valve cap (200) can open and close the communication hole (530).