Gas valve and gas appliance

Abstract

The utility model discloses a gas valve which comprises a valve body, the valve body is provided with a gas inlet channel, a communicating channel, a big fire channel, a small fire channel and a gas outlet channel, the gas inlet channel is communicated with the communicating channel, and the big fire channel and the small fire channel are respectively communicated between the communicating channel and the gas outlet channel; the electromagnetic valve is movably arranged in the communication channel; the valve element assembly is movably installed on the big fire channel. The pushing structure is movably installed on the valve body and used for driving the electromagnetic valve to be attracted so as to open a communicating opening of the communicating channel and the air inlet channel or used for driving the valve element assembly to move so as to open a communicating opening of the big fire channel and the communicating channel. According to the gas valve disclosed by the utility model, the switching between a big fire state and a small fire state can be realized by arranging the pushing structure, so that the whole gas valve is simple in structure, low in assembly cost and convenient for a user to operate.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas valve technical field especially relates to a gas valve and gas utensil. BACKGROUND

[0002] In some devices that need gas combustion to provide heat, such as gas stove, a valve body is usually installed to control the opening and closing or the flow adjustment of gas. In the initial stage, the valve body is opened by the electromagnetic valve suction caused by the depression of the rotating shaft.

[0003] In the prior art gas valve, two sets of operating mechanisms are provided to receive external force when opening the valve body and adjusting the size of fire, which results in complex structure, difficult installation and high cost of the gas valve. SUMMARY

[0004] To solve at least one problem in the prior art, according to one aspect of the utility model, a gas valve is provided, comprising:

[0005] A valve body is provided with an inlet channel, a communication channel, a large fire channel, a small fire channel and an outlet channel. The inlet channel and the communication channel are connected. The large fire channel and the small fire channel are connected between the communication channel and the outlet channel.

[0006] An electromagnetic valve is movably arranged in the communication channel to open or close the communication port between the communication channel and the inlet channel.

[0007] A valve core assembly is movably installed in the large fire channel to open or close the communication port between the large fire channel and the communication channel.

[0008] A pushing structure is movably installed in the valve body and oppositely arranged with the electromagnetic valve and the valve core assembly to drive the electromagnetic valve to attract to open the communication port between the communication channel and the inlet channel, or to drive the valve core assembly to move to open the communication port between the large fire channel and the communication channel.

[0009] In some embodiments, the pushing structure includes a pushing piece, a gland and a first elastic piece. The gland and the first elastic piece are installed in the valve body.

[0010] The pushing piece is slidably arranged opposite to the valve body and the gland to drive the electromagnetic valve to attract under the pushing of external force, or to drive the gland to rotate under the driving of external force to drive the valve core assembly to move through the gland to open or close the communication port between the large fire channel and the communication channel.

[0011] The first elastic member is in abutment with the pusher and the valve body respectively to apply an elastic force to the pusher.

[0012] In some embodiments, the pressure cover opens or closes the communication port of the large fire passage and the communication passage in a linear motion manner to drive the valve core assembly.

[0013] In some embodiments, the pressure cover is provided with a protrusion on one side of the valve core assembly, and the height of the protrusion gradually increases along the axial direction of the pusher.

[0014] In some embodiments, the communication passage comprises a vertical main passage and a control passage, the main passage is in communication with the large fire passage and the small fire passage respectively, the control passage is in communication with the air inlet passage, and the electromagnetic valve is arranged in the control passage.

[0015] In some embodiments, the gas valve further comprises an adjusting valve needle, the adjusting valve needle is movably arranged in the small fire passage to adjust the size of the communication port between the small fire passage and the air outlet passage.

[0016] In some embodiments, the adjusting valve needle is threadedly connected with the valve body, the adjusting valve needle has an adjusting end towards the side of the valve body and a variable diameter end arranged in the valve body, and the outer diameter of the variable diameter end gradually increases towards the adjusting end.

[0017] In some embodiments, the gas valve further comprises an adjusting valve needle, the adjusting valve needle is provided with a first air vent, the adjusting valve needle is provided with a first transfer passage, and the air outlet passage, the first air vent, the first transfer passage and the communication passage are sequentially communicated.

[0018] In some embodiments, the valve core assembly comprises a valve core and a second elastic member, the valve core is slidably arranged relative to the valve body, and the two ends of the second elastic member are in abutment with the valve core and the bottom wall of the large fire passage respectively.

[0019] In another aspect of the present application, a gas appliance is provided, comprising the above gas valve.

[0020] In summary, the gas valve and the gas appliance provided by the present application have the following technical effects.

[0021] The small fire channel and the communication channel are communicated, so that when the electromagnetic valve is attracted by the pushing structure, the gas can flow out through the gas inlet channel, the communication channel, the small fire channel and the gas outlet channel in sequence, realizing the small fire function; when large fire is needed, the valve core assembly is driven to move by the pushing structure, so that the communication port of the large fire channel and the communication channel is opened, at this time, the gas can flow out through the communication channel, the large fire channel and the gas outlet channel, realizing the large fire function, so that the conversion of the large fire and the small fire can be realized by the setting of a single pushing structure, the structure of the whole gas valve is simpler, the assembly of the whole gas valve is facilitated, and the production cost is lower. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a three-dimensional schematic view of the gas valve of the utility model embodiment;

[0023] Figure 2 It is a structure schematic view of the gas valve in Figure 1

[0024] Figure 3 It is a cross-sectional view along A-A in Figure 2

[0025] Figure 4 It is an explosion schematic view of the gas valve in Figure 1

[0026] Figure 5 It is a structure schematic view of the gas valve in Figure 1

[0027] Figure 6 It is a structure schematic view of the valve main body in Figure 1

[0028] Figure 7 It is a structure schematic view of the pushing structure and the valve core assembly in Figure 2

[0029] Figure 8 It is a structure schematic view of the valve cover in Figure 7

[0030] Figure 9 It is a cross-sectional view of the pushing member and the first elastic member in Figure 7

[0031] Figure 10 It is a structure schematic view of the valve core assembly in Figure 7

[0032] Figure 11 It is a cross-sectional view of the valve core assembly in Figure 10

[0033] Figure 12 It is a cross-sectional view of the valve core assembly in Figure 4 ​​​​​​​​​​Structure diagram of the adjusting valve needle.

[0034] The drawings: 100-gas valve, 10-valve body, 11-inlet channel, 13-communication channel, 131-main channel, 132-control channel, 14-large fire channel, 15-small fire channel, 16-outlet channel, 17-valve body, 18-valve cover, 19-mounting cavity, 20-solenoid valve, 30-valve core assembly, 31-valve core, 32-second elastic member, 33-second sealing ring, 34-fourth sealing ring, 40-push structure, 41-push member, 411-rotation shaft, 412-top rod, 413-housing groove, 414-abutting piece, 416-clamping block, 42-pressing cover, 421-clamping groove, 422-protruding block, 43-first elastic member, 50-first shaft sleeve, 60-first sealing ring, 70-second shaft sleeve, 71-second air vent, 72-second transfer channel, 80-third sealing ring, 90-adjusting valve needle, 91-first air vent, 92-first transfer channel, 93-adjusting end, 94-variable diameter end, 95-fifth sealing ring. DETAILED DESCRIPTION

[0035] For better understanding and implementation, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application.

[0036] In the description of the present application, it should be explained that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as limiting the device or element indicated or implied to have a specific orientation, structure and operation, and therefore cannot be understood as limiting the present application.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments of the present application, and are not intended to limit the present application.

[0038] The present application will be described in further detail below in conjunction with the drawings.

[0039] Please refer to Figures 1 to 12 The gas valve 100 provided by the embodiments of the present application comprises a valve body 10, a solenoid valve 20, a valve core assembly 30 and a push structure 40.

[0040] Among them, please refer to Figures 1 to 6The valve body 10 is provided with an air inlet channel 11, a communication channel 13, a large fire channel 14, a small fire channel 15 and an air outlet channel 16. The air inlet channel 11 and the communication channel 13 are sequentially communicated. The large fire channel 14 and the small fire channel 15 are respectively communicated between the communication channel 13 and the air outlet channel 16. The electromagnetic valve 20 is movably arranged in the communication channel 13 and used for opening or closing the communication port between the communication channel 13 and the air inlet channel 11. The valve core assembly 30 is movably arranged in the large fire channel 14 and used for opening or closing the communication port between the large fire channel 14 and the communication channel 13. The pushing structure 40 is movably arranged in the valve body 10 and oppositely arranged with the electromagnetic valve 20 and the valve core assembly 30 respectively. The pushing structure 40 is used for driving the electromagnetic valve 20 to attract and open the communication port between the communication channel 13 and the air inlet channel 11 or driving the valve core assembly 30 to move and open the communication port between the large fire channel 14 and the communication channel 13.

[0041] The gas valve 100 is provided with the small fire channel 15 and the communication channel 13. When the pushing structure 40 drives the electromagnetic valve 20 to attract, the gas can sequentially flow out through the air inlet channel 11, the communication channel 13, the small fire channel 15 and the air outlet channel 16, thereby realizing the small fire function. When the large fire is needed, the pushing structure 40 drives the valve core assembly 30 to move, so that the valve core assembly 30 opens the communication port between the large fire channel 14 and the communication channel 13. At this time, the gas can flow out through the communication channel 12, the large fire channel 14 and the air outlet channel 16, thereby realizing the large fire function. In this way, the conversion between the large fire and the small fire can be realized by arranging the single pushing structure 40. The structure of the entire gas valve 100 is simpler, the assembly of the entire gas valve 100 is facilitated, and the production cost is lower.

[0042] Specifically, referring to Figures 1 to 6 In order to facilitate the assembly of the valve body 10 and the assembly between various components, the valve body 10 comprises a valve main body 17 and a valve cover 18 which are detachably connected. The valve main body 17 is provided with the air inlet channel 11, the communication channel 13, the large fire channel 14, the small fire channel 15 and the air outlet channel 16. The valve cover 18 is arranged at one end of the valve main body 17 and cooperates with the valve cover 18 to form an installation cavity 19. By arranging the valve body 10 to comprise the valve main body 17 and the valve cover 18 which are detachably connected, the installation of various components on the valve body 10 is facilitated.

[0043] Specifically, referring to Figures 3 to 5 and Figures 7 to 9For the structural schematic diagram of the pushing structure 40 of the present embodiment, the pushing structure 40 comprises a pushing member 41, a gland 42 and a first elastic member 43, the gland 42 and the first elastic member 43 are installed in the valve body 10, specifically, in the installation cavity 19 mentioned above; the pushing member 41 is slidingly arranged relative to the valve body 10 and the gland 42 respectively, for driving the solenoid valve 20 to be attracted under the pushing of an external force, or for driving the gland 42 to rotate under the driving of an external force, so as to drive the valve core assembly 30 to move, so as to open or close the communication port between the large fire passage 14 and the communication passage 13; the first elastic member 43 abuts against the pushing member 41 and the valve body 10 respectively, so as to apply an elastic force to the pushing member 41, thus, when it is needed to open the gas valve 100, the pushing member 41 is pressed and slides towards the solenoid valve 20, so as to drive the solenoid valve 20 to be attracted, and at the same time, the first elastic member 43 can be compressed, so as to store energy, after the solenoid valve 20 is attracted, the communication port between the communication passage 13 and the air inlet passage 11 can be opened, and the gas can flow from the air inlet passage 11 to the communication passage 13, and then flow out from the air outlet passage 16 through the small fire passage 15, so as to burn as a small fire; when it is needed to burn as a large fire, an external force is applied to the pushing member 41, the pushing member 41 rotates, so as to drive the gland 42 to rotate, the gland 42 drives the valve core assembly 30 to move, so as to open the communication port between the large fire passage 14 and the communication passage 13, and the gas can flow from the communication passage 13 to the large fire passage 14, at this time, the supply of gas is increased, so as to burn as a large fire. It can be understood that, at this time, the small fire passage 15 is still in the state of air outlet, and cooperates with the large fire passage 14 to air outlet.

[0044] It can be understood that, after the driving of the solenoid valve 20 is completed, the pushing member 41 is driven to return to the original position under the elastic force of the first elastic member 43.

[0045] It can be understood that, after the driving of the solenoid valve 20 is completed, the pushing member 41 is driven to return to the original position under the elastic force of the first elastic member 43.

[0046] Further, please refer to Figure 9 , the end of the rotating shaft 411 towards the top rod 412 is provided with a receiving groove 413, one end of the top rod 412 is received in the receiving groove 413, and the end of the top rod 412 connected to the rotating shaft 411 is provided with an abutting piece 414, the outer diameter of the abutting piece 414 is greater than the outer diameter of the main body of the top rod 412, but smaller than the inner diameter of the receiving groove 413, for being abutted by the first elastic member 43, so as to apply an elastic force to the top rod 412, so that the rotating shaft 411 and the top rod 412 are connected as a whole.

[0047] Specifically, in the implementation of the cooperation of the pusher 41 and the gland 42, specifically the cooperation of the rotating shaft 411 and the gland 42, the rotating shaft 411 is provided with a clamping block 416, the gland 42 is provided with a clamping groove 421, the clamping block 416 is slidingly arranged in the clamping groove 421 and can slide relative to the side wall of the clamping groove 421, and when receiving the driving force of rotation, the rotating shaft 411 can drive the pusher 41 to drive the rotation of the gland 42.

[0048] Specifically, in the implementation of the movement of the valve cover 18 driving the valve core assembly 30, the valve core assembly 30 is driven to move in parallel along the axial direction of the pusher 41 to open the large fire passage 14, and the valve core assembly 30 is driven to move in a straight line to open or close the communication port between the large fire passage 14 and the communication passage 13. In another embodiment, the valve core assembly 30 can be driven to rotate to open or close the communication port between the large fire passage 14 and the communication passage 13. For example, at this time, the valve core assembly 30 includes a ball valve, the gland 42 is provided with an insertion port, and the valve core assembly 30 is inserted into the insertion port under the pressing of the rotating shaft 411. The valve core assembly 30 includes a ball valve having a closed state and an open state, and as the rotating shaft 411 rotates, the ball valve is driven to rotate, thereby opening or closing the communication port between the large fire passage 14 and the communication passage 13.

[0049] Specifically, in the implementation of the driving movement of the valve core assembly 30 in a straight line direction in the embodiment, the side of the gland 42 facing the valve core 31 is provided with a protrusion 422, the height of the protrusion 422 gradually increases along the axial direction of the pusher 41, and the protrusion 422 is used in cooperation with the valve core assembly 30 to drive the valve core assembly 30 to move in a straight line direction. Therefore, as the gland 42 rotates, the position of the protrusion 422 with increasing height gradually approaches the valve core assembly 30, thereby driving the valve core assembly 30 to move in a straight line, and the sliding of the valve core assembly 30 opens the communication port between the large fire passage 14 and the communication passage 13.

[0050] Please refer to Figure 3 , Figure 6 and Figure 7 In an embodiment of the utility model, in order to facilitate the relative installation between the push structure 40 and the electromagnetic valve 20, the communication passage 13 includes a vertical main passage 131 and a control passage 132, the main passage 131 is connected with the large fire passage 14 and the small fire passage 15 respectively, the control passage 132 is connected with the air inlet passage 11, and the electromagnetic valve 20 is arranged in the control passage 132, that is, the control passage 12 is arranged in parallel with the small fire passage 15 and the large fire passage 14, thereby the air outlet passage 16 and the air inlet passage 11 can be arranged on the two sides of the push structure 40 and the electromagnetic valve 20 respectively.

[0051] Further, in order to ensure the sealing of the valve body 10, the gas valve 100 further comprises a first shaft sleeve 50 and a first sealing ring 60 coaxially arranged, the first shaft sleeve 50 is embedded on the side wall of the control channel 12 and abuts against the first sealing ring 60, and one end of the first elastic member 43 abuts against the first shaft sleeve 50, and the push member 41 is slidably arranged relative to the first shaft sleeve 50 and the first sealing ring 60. In this way, the first sealing ring 60 is pressed in the valve body 10 by the first shaft sleeve 50, and when the push member 41 slides relative to the valve body 10, the gas is prevented from leaking in the direction of the valve cover 18 due to the blocking of the first sealing ring 60. When the first sealing ring 60 is arranged, one, two or more can be arranged, which is not limited herein. With the increase of the number of sealing rings, the pressure resistance of the entire valve body 10 is increased.

[0052] Wherein, please refer to Figure 10 and Figure 11 When the opening of the large fire channel 14 is realized, the valve core assembly 30 comprises a valve core 31 and a second elastic member 32, the valve core 31 is slidably arranged relative to the valve body 10, and the two ends of the second elastic member 32 abut against the valve core 31 and the bottom wall of the large fire channel 14, respectively. In this way, under the push of the valve cover 18, the valve core 31 slides along the axial direction of the large fire channel 14, opens the communication port of the large fire channel 14 and the communication channel 13, at this time, the gas flowing through the communication channel 13 flows into the large fire channel 14 through the communication port of the large fire channel 14, and finally flows out from the gas outlet channel 16 to be burned to produce large fire; at the same time, the second elastic member 32 is compressed, and under the elastic force of the second elastic member 32, the valve core 31 is driven to return to the original position when the large fire state ends.

[0053] It can be understood that, in order to realize the sealing of the large fire channel 14 by the valve core assembly 30 in the small fire state, the valve core assembly 30 further comprises a second sealing ring 33, the second sealing ring 33 is sleeved on the end of the valve core 31 abutting against the second elastic member 32. When the valve core assembly 30 seals the large fire channel 14, the second sealing ring 33 abuts against the channel port of the large fire channel 14, so that the phenomenon of gas leakage is avoided.

[0054] In order to further improve the sealing effect, please refer to Figure 10 The gas valve 100 further comprises a second shaft sleeve 70 and at least one third sealing ring 80, the second shaft sleeve 70 is embedded on the side wall of the large fire channel 14 for sliding of the valve core 31, and the third sealing ring 80 is sleeved on the outer wall of the second shaft sleeve 70. In this way, when the valve core 31 closes the large fire channel 14, the second sealing ring 33 abuts against the end of the second shaft sleeve 70, and the sealing is increased by cooperation of the third sealing ring 80, so as to avoid gas leakage from the gap between the side wall of the large fire channel 14 and the second shaft sleeve 70, and the gas valve 100 can be applied to the delivery of gas with larger pressure.

[0055] Specifically, a plurality of third sealing rings 80 are arranged in the embodiment, a part of the third sealing rings 80 are arranged at one end of the second shaft sleeve 70 towards the gland 42, and a part of the third sealing rings 80 are arranged at one end of the second shaft sleeve 70 towards the second elastic member 32. By arranging the plurality of third sealing rings 80, the sealing performance is improved, and the delivery of the gas with greater pressure is realized.

[0056] Further, the valve core assembly 30 further comprises a fourth sealing ring 34 arranged on the inner wall of the second shaft sleeve 70 and capable of sliding with the valve core 31. By arranging the fourth sealing ring 34, the sealing performance is improved when the valve core 31 is in the closed state relative to the second shaft sleeve 70, and the pressure resistance of the entire gas valve 200 is improved.

[0057] Specifically, referring to Figure 10 and Figure 11 , when the second shaft sleeve 70 and the gas outlet channel 16 are connected, the second shaft sleeve 70 is provided with a second air port 71, the second shaft sleeve 70 is provided with a second transfer channel 72, and the second air port 71, the second transfer channel 72 and the connecting channel 13 are sequentially connected. Thus, the gas flowing through the connecting channel 13 flows through the second transfer channel 72 and then flows to the gas outlet channel 16 through the second air port 71.

[0058] Referring to Figure 12 , in an embodiment of the utility model, in order to adjust the gas outlet size of the small fire channel 15 in the small fire state, the gas valve 100 further comprises an adjusting valve needle 90, the adjusting valve needle 90 is movably arranged in the small fire channel 15, and is used for adjusting the size of the connecting port of the small fire channel 15 and the gas outlet channel 16. Thus, by arranging the adjusting valve needle 90, the fire size in the small fire state can be adjusted according to the requirement.

[0059] In an embodiment of one adjusting mode, referring to Figure 12 , the adjusting valve needle 90 is provided with a first air port 91, the adjusting valve needle 90 is provided with a first transfer channel 92, and the gas outlet channel 16, the first air port 91, the first transfer channel 92 and the connecting channel 13 are sequentially connected. Thus, the size of the first air port 91 or the size of the first transfer channel 92 can be set according to the requirement, so as to adjust the gas flow and realize the fire adjustment in the small fire state.

[0060] In another embodiment of an adjusting mode, referring to Figure 12The adjusting valve needle 90 is screwed with the valve body 10, the adjusting valve needle 90 has an adjusting end 93 towards the side of the valve body 10 and a variable diameter end 94 arranged in the valve body 10, the outer diameter of the variable diameter end 94 gradually increases towards the adjusting end 93, that is, the variable diameter end 94 with the gradually changed outer diameter is inserted into the small fire channel 15 by a certain amount to realize the opening or closing of the small fire channel 15; when it is needed to adjust the size of the small fire, the adjusting end 93 is gradually screwed into or out of the small fire channel 15, so that the distance between the variable diameter end 94 and the side wall of the channel opening of the small fire channel 15 gradually decreases or increases, the adjustment of the gas flow is realized to adjust the size of the fire.

[0061] It can be understood that, in order to avoid gas leakage from the installation position of the adjusting valve needle 90, a fifth sealing ring 95 can be arranged on the adjusting valve needle 90, the fourth sealing ring 95 abuts against the inner wall of the channel in which the adjusting valve needle 90 is arranged to achieve the sealing effect.

[0062] The gas valve 100 can realize the opening of the large fire channel 14 by arranging the pushing structure 40 with the gland 42, arranging the convex block 422 on the gland 42 matched with the valve core assembly 30, and rotating the gland 42 driven by the pushing piece 41 to realize the movement of the convex block 422 pushing the valve core assembly 30, thereby realizing the opening of the large fire channel 14; the large fire channel 14 can be sealed by arranging the first shaft sleeve 50 and the first sealing ring 60 in the large fire channel 14, thereby reducing the possibility of gas leakage; the air volume during the small fire can be adjusted by arranging the adjusting valve needle 90 in the small fire channel 15, thereby facilitating the adjustment of the size of the small fire.

[0063] The utility model discloses still provide a kind of gas appliance in another embodiment of the utility model.

[0064] The above-mentioned gas appliance, when adjusting the size of fire, the installed gas valve 100 can realize driving adjustment only by one pushing structure 40, the structure of the whole gas valve 100 is simpler, has the characteristics of lower cost, and is convenient for user's operation.

[0065] The technical means disclosed in the utility model scheme is not limited to the technical means disclosed in the above-mentioned embodiment, and also includes the technical scheme composed of any combination of the above technical features. It should be pointed out that, for ordinary skilled persons in the art, without departing from the principle of the utility model, a number of improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the utility model.

Claims

1. Gas valve (100), characterized in that The gas valve (100) comprises: a valve body (10) provided with an air inlet channel (11), a communication channel (13), a large fire channel (14), a small fire channel (15) and an air outlet channel (16), the air inlet channel (11) and the communication channel (13) being in communication, the large fire channel (14) and the small fire channel (15) being in communication between the communication channel (13) and the air outlet channel (16), respectively; an electromagnetic valve (20) movably arranged in the communication channel (13) for opening or closing the communication port between the communication channel (13) and the air inlet channel (11); a valve core assembly (30) movably arranged in the large fire channel (14) for opening or closing the communication port between the large fire channel (14) and the communication channel (13); a pushing structure (40) movably arranged in the valve body (10) and oppositely arranged with the electromagnetic valve (20) and the valve core assembly (30) for driving the electromagnetic valve (20) to attract to open the communication port between the communication channel (13) and the air inlet channel (11) or for driving the valve core assembly (30) to move to open the communication port between the large fire channel (14) and the communication channel (13).

2. The gas valve (100) according to claim 1, wherein: the pushing structure (40) comprises a pushing piece (41), a gland (42) and a first elastic piece (43), the gland (42) and the first elastic piece (43) being arranged in the valve body (10); the pushing piece (41) is slidably arranged opposite to the valve body (10) and the gland (42) for driving the electromagnetic valve (20) to attract under the pushing of an external force or for driving the gland (42) to rotate under the driving of an external force to drive the valve core assembly (30) to move through the gland (42) to open or close the communication port between the large fire channel (14) and the communication channel (13); the first elastic piece (43) abuts against the pushing piece (41) and the valve body (10) to apply an elastic force to the pushing piece (41).

3. Gas valve (100) according to claim 2, characterized in that the gland (42) drives the valve core assembly (30) to open or close the communication port between the large fire channel (14) and the communication channel (13) in a linear motion manner.

4. Gas valve (100) according to claim 3, characterized in that the side of the gland (42) facing the valve core assembly (30) is provided with a protrusion (422) with a gradually increasing height along the axial direction of the pushing piece (41), the protrusion (422) being used to cooperate with the valve core assembly (30) to push the valve core assembly (30) to move linearly under the driving of an external force.

5. The gas valve (100) according to any one of claims 1-4, wherein: The communication passage (13) comprises a vertically arranged main passage (131) and a control passage (132), the main passage (131) is communicated with the large fire passage (14) and the small fire passage (15) respectively, the control passage (132) is communicated with the air inlet passage (11), and the electromagnetic valve (20) is arranged in the control passage (132).

6. Gas valve (100) according to any one of claims 1-3, characterized in that The gas valve (100) further comprises an adjusting valve needle (90), the adjusting valve needle (90) is movably arranged in the small fire passage (15) and used for adjusting the size of the communication port between the small fire passage (15) and the air outlet passage (16).

7. Gas valve (100) according to claim 6, characterized in that The adjusting valve needle (90) is threadedly connected with the valve body (10), the adjusting valve needle (90) has an adjusting end (93) towards the side of the valve body (10) and a variable diameter end (94) arranged in the valve body (10), and the outer diameter of the variable diameter end (94) gradually increases in the direction of the adjusting end (93).

8. Gas valve (100) according to any one of claims 1-4, characterized in that The gas valve (100) further comprises an adjusting valve needle (90), the adjusting valve needle (90) is movably arranged in the small fire passage (15) and used for adjusting the size of the communication port between the small fire passage (15) and the air outlet passage (16).

9. Gas valve (100) according to any one of claims 1-4, characterized in that The valve core assembly (30) comprises a valve core (31) and a second elastic member (32), the valve core (31) is slidably arranged relative to the valve body (10), and the two ends of the second elastic member (32) are respectively abutted against the valve core (31) and the bottom wall of the large fire passage (14).

10. A gas appliance characterised in that The gas valve (100) comprises the valve body (10), the valve core assembly (30), the adjusting valve needle (90), the electromagnetic valve (20) and the communication passage (13). The gas valve (100) comprises the valve body (10), the valve core assembly (30), the adjusting valve needle (90), the electromagnetic valve (20) and the communication passage (13).

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