Water-gas linkage valve and gas appliances

Abstract

The utility model relates to the technical field of gas appliances, and discloses a water-gas linkage valve and a gas appliance. The gas valve assembly of the water-gas linkage valve comprises a gas valve body and a solenoid valve, wherein an air inlet channel and an air outlet channel are arranged in the gas valve body, and the solenoid valve is arranged between the air inlet channel and the air outlet channel, and the solenoid valve comprises a valve body, a coil assembly and a valve shaft assembly, wherein a fixed shaft is fixed in the valve shaft channel, a movable shaft is movably arranged in the valve shaft channel, and a sealing member is arranged at one end of the movable shaft away from the fixed shaft, and is used to block a valve port between the air inlet channel and the air outlet channel; a connected air cavity and an ignition channel are arranged in the sealing member, and a connecting portion of the movable shaft extends into the air cavity and can move in the air cavity, and when the energized voltage of the coil assembly is a first set voltage, the moving shaft is driven to move so that the connecting portion opens the ignition channel; when the energized voltage rises to a second set voltage, the connecting portion drives the sealing member to move and open the valve port, so that one solenoid valve can realize both ignition and normal combustion of gas.

Description

Technical Field

[0001] The utility model relates to the technical field of gas appliances, in particular to a water-gas linkage valve and a gas appliance. Background Art

[0002] Gas appliances such as gas water heaters and wall-mounted boilers all use gas as fuel to provide users with domestic hot water or heating hot water. They usually rely on water-gas linkage valves to control the opening of the gas valve and the gas pressure to provide users with water with different heat loads.

[0003] The existing water-gas linkage valve has an air intake channel and a main gas channel on its gas valve body, and a shut-off valve is provided on the main gas channel. The shut-off valve is used to control the connection between the air intake channel and the main gas channel. In order to prevent explosion, an ignition channel is also provided on the gas valve body, and an ignition solenoid valve for opening and closing the ignition channel is provided on the ignition channel. When igniting, the ignition channel is first opened through the ignition solenoid valve, and a small amount of gas is introduced for ignition. After ignition, the main gas channel is opened through the shut-off valve to maintain combustion. The need to set up a shut-off valve and an ignition solenoid valve results in high costs. Utility Model Content

[0004] The first technical problem solved by the utility model is to provide a water-gas linkage valve, which can effectively solve the problem of high cost of the gas valve assembly of the existing water-gas linkage valve, and achieve the purpose of reducing the cost of the water-gas linkage valve.

[0005] The second technical problem solved by the present invention is to provide a gas appliance, which can effectively solve the technical problem of high cost of existing gas appliances and achieve the purpose of reducing costs.

[0006] The first technical problem mentioned above is solved by the following technical solution:

[0007] The water-gas linkage valve comprises a gas valve assembly, wherein the gas valve assembly comprises:

[0008] An air valve body, wherein an air inlet channel and an air outlet channel are provided in the air valve body, and the air inlet channel and the air outlet channel are connected through a valve port;

[0009] a solenoid valve, disposed between the air inlet passage and the air outlet passage, for controlling the communication between the air inlet passage and the air outlet passage;

[0010] The solenoid valve comprises a valve body, a coil assembly and a valve shaft assembly, the coil assembly is arranged in the valve body, a valve shaft channel is arranged in the valve body, the valve shaft assembly comprises a fixed shaft, a movable shaft, a sealing member, a first elastic member and a second elastic member, the fixed shaft is fixed to an end of the valve shaft channel away from the valve port, the movable shaft is movably arranged in the valve shaft channel, the sealing member is arranged at an end of the movable shaft away from the fixed shaft and is used to block the valve port; the second elastic member is arranged between the sealing member and the valve body; an air cavity and an ignition channel that are interconnected are arranged in the sealing member, the air cavity is connected to the air inlet channel, and the ignition channel is connected to the air outlet channel; a connecting portion is arranged at the end of the movable shaft, the connecting portion extends into the air cavity, and can relatively move in the air cavity along the axial direction of the movable shaft; the first elastic member is connected to the movable shaft, and is used to provide an elastic force that causes the connecting portion to block the ignition channel;

[0011] When the coil assembly is energized and the energized voltage is a first set voltage, the movable shaft can be driven to move so that the connecting part opens the ignition channel; when the energized voltage of the coil assembly rises to a second set voltage, the connecting part drives the sealing member to move to open the valve port.

[0012] Compared with the background technology, the water-gas linkage valve of the utility model has the following beneficial effects:

[0013] The water-gas linkage valve provided by the utility model is provided with a solenoid valve between the air inlet channel and the air outlet channel in the air valve body, and the solenoid valve can control the connection between the air inlet channel and the air outlet channel. By providing a valve shaft assembly in the valve body of the solenoid valve, when the coil assembly is powered on with a first set voltage, the connecting part of the moving shaft of the valve shaft assembly moves along the axial direction of the moving shaft in the air cavity of the seal to open the ignition channel, and a small amount of gas in the air inlet channel enters the ignition channel, enters the air outlet channel through the ignition channel, and then enters the combustion chamber for ignition. After the ignition is successful, the power supply voltage of the coil assembly rises to the second set voltage, and when the moving shaft continues to move in the direction away from the valve port, it can drive the sealing member to move in the direction away from the valve port to open the valve port, so that a large amount of gas in the air inlet channel enters the air outlet channel through the valve port, and then enters the combustion chamber for normal combustion. The water-gas linkage valve only needs one solenoid valve, which can realize both ignition and normal combustion of gas, thereby reducing production costs.

[0014] In one embodiment, the air cavity is configured as a stepped cavity, the stepped cavity includes a first cavity and a second cavity, the first cavity is disposed between the second cavity and the ignition channel, and the diameter of the first cavity is greater than the diameter of the second cavity; the connecting portion includes a connecting shaft and a limit head, the limit head is disposed at the end of the connecting shaft away from the fixed axis, the limit head is disposed in the first cavity, the ignition channel is disposed at the bottom of the first cavity, the limit head abuts against the bottom of the first cavity, and can block the ignition channel, and the limit head is disengaged from the abutment with the bottom of the first cavity, so that the air intake channel can be connected with the ignition channel.

[0015] In one embodiment, the second cavity and the connecting shaft are clearance-matched to form a gap space, and an air passage is provided on the limit head. When the limit head is separated from the abutment with the bottom of the first cavity, the air passage can connect the gap space and the ignition channel.

[0016] In one of the embodiments, the air passage extends from a connection point between the limiting head and the connecting shaft to an end of the limiting head away from the connecting shaft, and the air passage is symmetrically arranged relative to the ignition passage.

[0017] In one embodiment, the limit head is configured as an inverted cone, and the lower bottom surface of the cone abuts against the connection between the first cavity and the second cavity to limit the movement of the movable shaft relative to the seal, and the air passage extends from the connection between the lower bottom surface of the cone and the connecting shaft to the side surface of the cone, and the upper bottom surface of the cone abuts against the bottom surface of the first cavity to close the ignition passage.

[0018] In one of the embodiments, a first abutment ring is provided on the bottom surface of the first cavity, the first abutment ring is provided in the circumference of the ignition channel, and the limit head abuts against the first abutment ring to close the ignition channel.

[0019] In one of the embodiments, a second abutment ring is provided around the valve port, and the sealing member abuts against the second abutment ring to seal the valve port.

[0020] In one embodiment, the first elastic member is arranged between the fixed shaft and the movable shaft; a spring cavity is arranged at one end of the fixed shaft close to the movable shaft, and a convex shaft is arranged at one end of the movable shaft close to the fixed shaft; one end of the first elastic member is sleeved outside the convex shaft and abuts against the movable shaft, and the other end abuts against the bottom of the spring cavity.

[0021] In one of the embodiments, the gas valve assembly further includes a pressure-stabilizing valve, which is detachably connected to the gas valve body and is used to adjust the pressure of the gas outlet channel.

[0022] The above second technical problem is solved by the following technical solution:

[0023] A gas appliance, comprising the water-gas linkage valve as described in any of the above schemes.

[0024] Compared with the background technology, the gas appliance provided by the utility model has the following beneficial effects:

[0025] The gas appliance provided by the utility model adopts the water-gas linkage valve, and only one solenoid valve is needed in the gas valve assembly to realize the control of ignition and normal combustion, thereby reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0027] Figure 1 It is a structural schematic diagram of a water-gas linkage valve provided in a specific embodiment of the utility model;

[0028] Figure 2 It is an exploded schematic diagram of the gas valve assembly provided by the specific implementation mode of the utility model;

[0029] Figure 3 It is a cross-sectional view of the gas valve body provided by the specific embodiment of the utility model;

[0030] Figure 4 It is a cross-sectional view of a coil assembly of a solenoid valve provided by a specific embodiment of the utility model in a power-off state;

[0031] Figure 5 yes Figure 4 A partial enlarged view of the middle A;

[0032] Figure 6 It is a structural schematic diagram of a moving shaft provided by a specific embodiment of the utility model;

[0033] Figure 7 It is a cross-sectional view of the ignition channel of the solenoid valve provided by the specific embodiment of the utility model when it is opened;

[0034] Figure 8 It is a cross-sectional view of the solenoid valve provided in a specific embodiment of the utility model when the valve ports of the air inlet channel and the air outlet channel are opened;

[0035] Fig. 9 It is a structural schematic diagram of a pressure-stabilizing valve provided in a specific implementation manner of the utility model.

[0036] Description of labels:

[0037] 100, air valve assembly; 200, linkage valve assembly; 300, water valve assembly;

[0038] 1. air valve body; 11. air inlet channel; 12. air outlet channel; 13. first mounting surface; 131. first air outlet; 132. first air inlet; 14. first mounting cavity; 15. second mounting cavity;

[0039] 2. Solenoid valve; 21. Valve body; 211. Valve shaft channel; 212. Valve port; 213. Second abutting ring; 22. Valve shaft assembly; 221. Fixed shaft; 2211. Spring chamber; 222. Moving shaft; 2221. Connecting shaft; 2222. Limiting head; 2223. Air passage; 2224. Protruding shaft; 223. Sealing member; 2231. First chamber; 2232. Second chamber; 2233. Ignition passage; 2234. First abutting ring; 224. First elastic member; 225. Second elastic member; 226. First mounting seat; 227. Second mounting seat; 23. Coil assembly;

[0040] 3. pressure-stabilizing valve; 31. pressure-stabilizing valve body; 311. second mounting surface; 3111. second air inlet; 3112. second air outlet;

[0041] 41. first sealing ring; 42. second sealing ring;

[0042] 5. Air valve core assembly. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0044] In the description of the present application, it should be understood that the terms "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0045] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0046] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] like Figure 1 As shown, this embodiment provides a water-gas linkage valve, including a gas valve assembly 100, a linkage valve assembly 200 and a water valve assembly 300, wherein the water valve assembly 300 is connected to the gas valve assembly 100 through the linkage valve assembly 200. Water enters the water-gas linkage valve from the water valve assembly 300, and the linkage valve assembly 200 controls the linkage of the gas valve assembly 100, so that the gas enters the water-gas linkage valve from the gas valve assembly 100, enters the combustion chamber through the gas valve assembly 100, and is ignited and burned, providing heat for the water, thereby providing hot water for the user.

[0048] like Figure 2-Figure 3 As shown, the gas valve assembly 100 includes a gas valve body 1, a solenoid valve 2, a pressure regulating valve 3 and a gas valve core assembly 5. The gas valve body 1 is provided with an inlet channel 11, a first installation cavity 14, a second installation cavity 15 and an outlet channel 12. The solenoid valve 2 is arranged in the first installation cavity 14 between the inlet channel 11 and the outlet channel 12, and is used to control the communication between the inlet channel 11 and the outlet channel 12. The inlet channel 11 and the outlet channel 12 are connected through the valve port 212. The pressure regulating valve 3 is arranged between the outlet channel 12 and the gas valve core assembly 5, and is used to adjust the outlet pressure of the outlet channel 12. The pressure-stabilizing valve 3 includes a pressure-stabilizing valve body 31, the gas valve body 1 is detachably connected to the pressure-stabilizing valve body 31, the gas valve core assembly 5 is arranged in the second installation cavity 15, the gas enters the gas valve body 1 from the gas inlet channel 11, after the solenoid valve 2 is opened, the gas enters the gas outlet channel 12 through the solenoid valve 2, and then adjusts the pressure of the gas outlet channel 12 through the pressure-stabilizing valve 3, and then adjusts the intake flow through the gas valve core assembly 5 before entering the combustion chamber and igniting and burning.

[0049] like Figure 4-Figure 6As shown, the solenoid valve 2 includes a valve body 21, a coil assembly 23 and a valve shaft assembly 22. The coil assembly 23 is arranged on the valve body 21. A valve shaft channel 211 is arranged in the valve body 21. The valve shaft assembly 22 includes a fixed shaft 221, a movable shaft 222, a sealing member 223, a first elastic member 224 and a second elastic member 225. The fixed shaft 221 is fixed to one end of the valve shaft channel 211 away from the valve port 212. The movable shaft 222 is movably arranged in the valve shaft channel 211. The sealing member 223 is arranged at one end of the movable shaft 222 away from the fixed shaft 221 and is used to block the valve port 212. The second elastic member 225 is arranged between the sealing member 223 and the valve body 21. An air cavity and an ignition channel 2233 are arranged in the sealing member 223, which are connected to each other. The air cavity is connected to the air inlet channel 11, and the ignition channel 2233 is connected to the air outlet channel 12. The end of the movable shaft 222 is provided with a connecting portion, which extends into the air cavity and can move relatively in the air cavity along the axis direction of the movable shaft 222. The first elastic member 224 is connected to the movable shaft 222 to provide elastic force to make the connecting portion block the ignition channel 2233.

[0050] When the coil assembly 23 is powered and the power supply voltage is the first set voltage, the movable shaft 222 can be driven to move so that the connecting part opens the ignition channel 2233. When the power supply voltage of the coil assembly 23 rises to the second set voltage, the connecting part drives the sealing member 223 to move to open the valve port 212. The second set voltage is greater than the first set voltage. When the power-on voltage of the coil assembly 23 is the first set voltage, the moving shaft 222 is subjected to a smaller magnetic field force. Under the action of the smaller magnetic field force, the moving shaft 222 moves in a direction away from the valve port 212. During the movement of the moving shaft 222, the moving shaft 222 first moves relative to the sealing member 223, so that the connecting portion moves in the air cavity in a direction away from the ignition channel 2233 to open the ignition channel 2233. A small amount of fuel gas in the intake channel 11 enters the ignition channel 2233 through the air cavity, enters the outlet channel 12 through the ignition channel 2233, and then adjusts the pressure of the outlet channel 12 through the pressure regulating valve 3, and then adjusts the intake flow through the gas valve core assembly 5, and finally enters the combustion chamber for ignition. After the ignition is successful, the power-on voltage of the solenoid valve 2 is increased so that the power-on voltage is the second set voltage. At this time, the magnetic field force generated by the coil assembly 23 increases, and the increased magnetic field force drives the movable shaft 222 to continue to move away from the valve port 212, which can drive the seal 223 to move away from the valve port 212 to open the valve port 212, so that a large amount of gas in the intake channel 11 enters the outlet channel 12 through the valve port 212, and then enters the combustion chamber for normal combustion. The water-gas linkage valve only needs one solenoid valve 2, which can achieve both ignition and normal combustion of gas, reducing production costs.

[0051] The first set voltage and the second set voltage are not specifically limited in this embodiment, and those skilled in the art can obtain them through experiments.

[0052] In one embodiment, continue to refer to Figure 5 The air cavity is set as a stepped cavity, and the stepped cavity includes a first cavity 2231 and a second cavity 2232. The first cavity 2231 is arranged between the second cavity 2232 and the ignition channel 2233. The diameter of the first cavity 2231 is greater than the diameter of the second cavity 2232. The connecting portion includes a connecting shaft 2221 and a stopper 2222. The stopper 2222 is arranged at one end of the connecting shaft 2221 away from the fixed shaft 221. The stopper 2222 is arranged in the first cavity 2231. The ignition channel 2233 is arranged at the cavity bottom of the first cavity 2231. The stopper 2222 abuts against the cavity bottom of the first cavity 2231 to block the ignition channel 2233. The stopper 2222 is separated from the abutment with the cavity bottom of the first cavity 2231, so that the air intake channel 11 can be connected with the ignition channel 2233.

[0053] Specifically, the thickness of the stopper 2222 is less than the depth of the first cavity 2231, so that when the movable shaft 222 moves, the stopper 2222 can move relative to the sealing member 223 in the first cavity 2231. The sealing member 223 is an elastic sealing member, so that the stopper 2222 can extend into the first cavity 2231 through the second cavity 2232, and in the process of moving away from the ignition channel 2233, after the stopper 2222 abuts against the connection between the first cavity 2231 and the second cavity 2232, the movable shaft 222 stops relative movement with the sealing member 223, and when the movable shaft 222 continues to move away from the valve port 212, the sealing member 223 is driven to move together in the direction away from the valve port 212, thereby realizing that the air intake channel 11 is first connected with the ignition channel 2233, a small amount of gas is introduced for ignition, and then the air intake channel 11 is connected with the air outlet channel 12 through the valve port 212, a large amount of gas is introduced for normal combustion.

[0054] In one embodiment, the second cavity 2232 and the connecting shaft 2221 are clearance-matched to form a gap space, and a gas passage 2223 is provided on the stopper 2222. When the stopper 2222 is separated from the cavity bottom of the first cavity 2231, the gas passage 2223 can connect the gap space and the ignition channel 2233. That is, when the stopper 2222 is separated from the cavity bottom of the first cavity 2231, the gas in the air inlet channel 11 enters the ignition channel 2233 through the gap space and the gas passage 2223.

[0055] Of course, in other embodiments, the air intake channel 11 can also be directly connected to the lower end of the first cavity 2231 in a circumferential direction. When the limit head 2222 is out of contact with the bottom of the first cavity 2231, the combustion gas in the air intake channel 11 directly enters the lower end of the first cavity 2231 and connects with the ignition channel 2233.

[0056] In one embodiment, the gas passage 2223 extends from the connection between the stopper 2222 and the connecting shaft 2221 to the end of the stopper 2222 away from the connecting shaft 2221, and the gas passage 2223 is symmetrically arranged relative to the ignition passage 2233. With such an arrangement, after the gas enters the first chamber 2231, the forces on both sides of the stopper 2222 are uniform, thereby preventing the stopper 2222 from being deflected during movement and affecting the intake volume.

[0057] Specifically, two gas passages 2223 are provided, and the two gas passages 2223 are symmetrically arranged relative to the axis of the ignition passage 2233, thereby ensuring that the amount of gas entering the ignition passage 2233 from both sides of the ignition passage 2233 is substantially the same, and avoiding uneven force on both sides of the moving shaft 222, resulting in deflection and affecting the air intake of the gas passage 2223. Of course, four, six or other numbers of gas passages 2223 can also be provided.

[0058] Of course, in other embodiments, the connecting shaft 2221 can also be slidably matched with the second cavity 2232, and the gas passage 2223 extends from the peripheral wall of the connecting shaft 2221 to the end of the limit head 2222 away from the connecting shaft 2221, and when the limit head 2222 is pressed against the bottom of the first cavity 2231, the end of the gas passage 2223 away from the limit head 2222 is set higher than the second cavity 2232, so that when the limit head 2222 gradually separates from the bottom of the first cavity 2231, the combustion gas in the intake passage 11 can pass through the gap space and the gas passage 2223 into the ignition passage 2233.

[0059] In one embodiment, the limit head 2222 is configured as an inverted cone, and the lower bottom surface of the cone abuts against the connection between the first cavity 2231 and the second cavity 2232 to limit the movement of the movable shaft 222 relative to the sealing member 223. The air passage 2223 extends from the connection between the lower bottom surface of the cone and the connecting shaft 2221 to the side of the cone, and the upper bottom surface of the cone abuts against the bottom surface of the first cavity 2231 to close the ignition passage 2233. The ignition channel 2233 is arranged at the center position of the bottom of the hole of the first cavity 2231, and the gas channel 2223 is arranged to extend from the connection between the lower bottom surface of the cone and the connecting shaft 2221 to the side of the cone, so that the upper bottom surface of the cone abuts against the bottom surface of the first cavity 2231, which can close the ignition channel 2233, so that the fuel gas enters the gap space from the air intake channel 11, and then enters the gas channel 2223 from the gap space, and will not enter the ignition channel 2233; only after the movable shaft 222 drives the limit head 2222 to move relative to the sealing member 223, and a spacing space is formed between the limit head 2222 and the bottom of the first cavity 2231, the fuel gas entering the gas channel 2223 can enter the ignition channel 2233.

[0060] Of course, in other embodiments, the limit head 2222 can also be set to a cylindrical shape, and the ignition channel 2233 is set through the limit head 2222 at the connection between the connecting shaft 2221 and the cylindrical limit head 2222. When the limit head 2222 abuts against the bottom of the first cavity 2231, the end of the gas channel 2223 away from the connecting shaft 2221 is also closed by the bottom of the first cavity 2231. When the moving shaft 222 moves relative to the sealing member 223, a spacing space is formed between the limit head 2222 and the bottom of the first cavity 2231. Only then can the gas entering the gas channel 2223 enter the spacing space and then enter the ignition channel 2233 from the spacing space.

[0061] Furthermore, a first abutting ring 2234 is provided at the bottom of the first cavity 2231. The first abutting ring 2234 is provided in the circumference of the ignition channel 2233. The stopper 2222 abuts against the first abutting ring 2234 to close the ignition channel 2233. By providing the first abutting ring 2234, the bottom of the first cavity 2231 and the stopper 2222 are in line contact when they abut, that is, the sealing of the ignition channel 2233 is a line seal. Since the surface seal needs to abut a large area, when the stopper 2222 is slightly tilted, the stopper 2222 and the bottom of the first cavity 2231 cannot be completely fitted, which may cause sealing failure. Compared with the surface seal, the line seal has a smaller sealing area and is not prone to sealing failure due to a slight tilt of the stopper 2222. Compared with the surface seal, the line seal has higher reliability and better sealing effect.

[0062] Furthermore, a second abutting ring 213 is provided around the valve port 212, and the sealing member 223 abuts against the second abutting ring 213 to seal the valve port 212. Similarly, the second abutting ring 213 is provided so that the abutting of the sealing member 223 and the valve port 212 is also in line contact, so that the sealing effect of the air inlet channel 11 and the air outlet channel 12 is better.

[0063] In one embodiment, the first elastic member 224 is disposed between the fixed shaft 221 and the movable shaft 222. When the coil assembly 23 is powered on, the movable shaft 222 moves toward the fixed shaft 221 under the action of the magnetic field force, compressing the first elastic member 224. When the coil assembly 23 is powered off, under the action of the elastic restoring force of the first elastic member 224, the limit head 2222 can abut against the first abutment ring 2234 to ensure the sealing between the air inlet channel 11 and the ignition channel 2233; avoid the presence of a gap between the limit head 2222 and the first abutment ring 2234, resulting in the gas still passing through the ignition channel 2233 to enter the air outlet channel 12 when the solenoid valve 2 is powered off, causing gas leakage. Of course, in other embodiments, the first elastic member 224 can also be disposed between the movable shaft 222 and the sealing member 223.

[0064] Specifically, a spring cavity 2211 is provided at one end of the fixed shaft 221 close to the movable shaft 222, a convex shaft 2224 is provided at one end of the movable shaft 222 close to the fixed shaft 221, one end of the first elastic member 224 is sleeved outside the convex shaft 2224 and abuts against the movable shaft 222, and the other end abuts against the cavity bottom of the spring cavity 2211. The first elastic member 224 is a first spring, one end of the first spring is sleeved on the convex shaft 2224, and the other end abuts against the cavity bottom of the spring cavity 2211, ensuring that when the movable shaft 222 compresses the first elastic member 224 and the movable shaft 222 is acted upon by the elastic restoring force of the first elastic member 224, the movable shaft 222 can move along the axial direction without deviation, thereby ensuring that the gap between the second cavity 2232 and the connecting shaft 2221 is uniform, and the amount of gas entering the two gas passages 2223 is substantially consistent.

[0065] In one embodiment, a first mounting seat 226 is provided at one end of the valve shaft channel 211 close to the valve port 212, a second mounting seat 227 is provided at one end of the sealing member 223 close to the movable shaft 222, one end of the second elastic member 225 is connected to the first mounting seat 226, and the other end is connected to the second mounting seat 227. The second elastic member 225 is a second spring. When the coil assembly 23 is energized, the movable shaft 222 moves toward the direction close to the fixed shaft 221 under the action of the magnetic field force, driving the sealing member 223 to move toward the direction close to the fixed shaft 221, and the sealing member 223 compresses the second elastic member 225. When the coil assembly 23 is powered off, under the action of the elastic restoring force of the second elastic member 225, the seal 223 can abut against the second abutment ring 213 to ensure the sealing between the air inlet channel 11 and the air outlet channel 12, thereby avoiding the presence of a gap between the seal 223 and the second abutment ring 213, resulting in gas still entering the air outlet channel 12 from the air inlet channel 11 through the valve port 212 when the solenoid valve 2 is powered off, causing gas leakage.

[0066] In one embodiment, if Figure 2 , Figure 3 and Fig. 9As shown, the gas valve body 1 includes a first mounting surface 13, on which a first air outlet 131 and a first air inlet 132 are arranged; the pressure-stabilizing valve 3 includes a pressure-stabilizing valve body 31, and the pressure-stabilizing valve body 31 includes a second mounting surface 311, on which a second air inlet 3111 and a second air outlet 3112 are arranged, the second air inlet 3111 is arranged corresponding to the first air outlet 131, and the second air outlet 3112 is arranged corresponding to the first air inlet 132; the first mounting surface 13 and the second mounting surface 311 are sealed and connected to connect the pressure-stabilizing valve 3 with the gas valve body 1, and the gas in the gas valve body 1 enters the air outlet channel 12 after passing through the solenoid valve 2, and then enters the pressure-stabilizing valve 3 through the first air outlet 131 and the second air inlet 3111 for pressure stabilization, and then returns to the gas valve body 1 through the second air outlet 3112 and the first air inlet 132, and enters the combustion chamber for ignition and combustion after the air intake flow is adjusted by the gas valve core component 5. Such a configuration simplifies the structural design of the gas valve body 1 and reduces the manufacturing cost; realizes the modular assembly of the pressure-stabilizing valve 3 and improves the assembly efficiency; the size of the second air inlet 3111 and the second air outlet 3112 is not limited by the space of the gas valve body 1, and the pressure loss of the pressure-stabilizing valve 3 is small, which is suitable for use with gas appliances with larger capacity.

[0067] In one embodiment, the first mounting surface 13 and the second mounting surface 311 are sealed and connected by a sealing ring. The first mounting surface 13 and the second mounting surface 311 are sealed by the sealing ring to avoid a gap between the first mounting surface 13 and the second mounting surface 311, which causes pressure loss caused by gas leakage when the gas enters the pressure regulating valve 3 from the gas valve body 1.

[0068] Specifically, the first air outlet 131 and the second air inlet 3111 are sealed by a first sealing ring 41 , and the second air outlet 3112 and the first air inlet 132 are sealed by a second sealing ring 42 .

[0069] This embodiment also provides a gas appliance, including the water-gas linkage valve as described above. The gas appliance adopts the water-gas linkage valve as described above, and only one solenoid valve 2 is needed in the gas valve assembly 100 to realize the control of ignition and normal combustion, thereby reducing the production cost. In addition, the water-gas linkage valve is easy to assemble, further reducing the production cost, while increasing the capacity of the gas appliance.

[0070] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The specific contents of the above specific implementations only express several implementations of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A water-gas linkage valve, comprising a gas valve assembly (100), characterized in that: The air valve assembly (100) comprises: An air valve body (1), wherein an air inlet channel (11) and an air outlet channel (12) are provided in the air valve body (1); the air inlet channel (11) and the air outlet channel (12) are connected via a valve port (212); a solenoid valve (2), arranged between the air inlet passage (11) and the air outlet passage (12), and used for controlling the communication between the air inlet passage (11) and the air outlet passage (12); The solenoid valve (2) comprises a valve body (21), a coil assembly (23) and a valve shaft assembly (22); the coil assembly (23) is arranged on the valve body (21); a valve shaft channel (211) is arranged in the valve body (21); the valve shaft assembly (22) comprises a fixed shaft (221), a movable shaft (222), a sealing member (223), a first elastic member (224) and a second elastic member (225); the fixed shaft (221) is fixed to one end of the valve shaft channel (211) away from the valve port (212); the movable shaft (222) is movably arranged in the valve shaft channel (211); the sealing member (223) is arranged at one end of the movable shaft (222) away from the fixed shaft (221); for sealing the valve port (212); the second elastic member (225) is arranged between the sealing member (223) and the valve body (21); an air cavity and an ignition channel (2233) which are in communication with each other are arranged in the sealing member (223); the air cavity is in communication with the air inlet channel (11), and the ignition channel (2233) is in communication with the air outlet channel (12); a connecting portion is arranged at the end of the movable shaft (222), the connecting portion extends into the air cavity, and can move relatively in the air cavity along the axial direction of the movable shaft (222); the first elastic member (224) is connected to the movable shaft (222), and is used for providing an elastic force for the connecting portion to seal the ignition channel (2233); When the coil assembly (23) is energized and the energized voltage is a first set voltage, the movable shaft (222) can be driven to move so that the connecting part opens the ignition channel (2233); when the energized voltage of the coil assembly (23) rises to a second set voltage, the connecting part drives the sealing member (223) to move so as to open the valve port (212).

2. The water-gas linkage valve according to claim 1, characterized in that: The air cavity is configured as a stepped cavity, the stepped cavity comprising a first cavity (2231) and a second cavity (2232), the first cavity (2231) being disposed between the second cavity (2232) and the ignition channel (2233), the diameter of the first cavity (2231) being greater than the diameter of the second cavity (2232); the connecting portion comprising a connecting shaft (2221) and a stopper (2222), the stopper (2222) being disposed at a position where the connecting shaft (2221) is away from the fixed shaft ( The limiting head (2222) is disposed at one end of the first cavity (221), the limiting head (2222) is disposed in the first cavity (2231), the ignition channel (2233) is disposed at the cavity bottom of the first cavity (2231), the limiting head (2222) is in contact with the cavity bottom of the first cavity (2231), and can block the ignition channel (2233), and the limiting head (2222) is out of contact with the cavity bottom of the first cavity (2231), and can enable the air intake channel (11) to communicate with the ignition channel (2233).

3. The water-gas linkage valve according to claim 2, characterized in that: The second cavity (2232) and the connecting shaft (2221) are clearance-matched to form a gap space, and an air passage (2223) is provided on the limit head (2222). When the limit head (2222) is disengaged from the abutment with the bottom of the first cavity (2231), the air passage (2223) can connect the gap space and the ignition channel (2233).

4. The water-gas linkage valve according to claim 3, characterized in that: The air passage (2223) extends from the connection between the limit head (2222) and the connecting shaft (2221) to an end of the limit head (2222) away from the connecting shaft (2221), and the air passage (2223) is symmetrically arranged relative to the ignition channel (2233).

5. The water-gas linkage valve according to claim 4, characterized in that: The limit head (2222) is configured as an inverted cone, the lower bottom surface of the cone abuts against the connection between the first cavity (2231) and the second cavity (2232) to limit the movement of the movable shaft (222) relative to the sealing member (223), the air passage (2223) extends from the connection between the lower bottom surface of the cone and the connecting shaft (2221) to the side surface of the cone, and the upper bottom surface of the cone abuts against the bottom surface of the first cavity (2231) to close the ignition passage (2233).

6. The water-gas linkage valve according to claim 2, characterized in that: A first abutment ring (2234) is provided at the bottom of the first cavity (2231), and the first abutment ring (2234) is arranged in the circumference of the ignition channel (2233). The limit head (2222) abuts against the first abutment ring (2234) to close the ignition channel (2233).

7. The water-gas linkage valve according to claim 1, characterized in that: A second abutment ring (213) is provided in the circumferential direction of the valve port (212), and the sealing member (223) abuts against the second abutment ring (213) to seal the valve port (212).

8. The water-gas linkage valve according to any one of claims 1 to 7, characterized in that: The first elastic member (224) is arranged between the fixed shaft (221) and the movable shaft (222); a spring cavity (2211) is arranged at one end of the fixed shaft (221) close to the movable shaft (222), and a convex shaft (2224) is arranged at one end of the movable shaft (222) close to the fixed shaft (221); one end of the first elastic member (224) is sleeved outside the convex shaft (2224) and abuts against the movable shaft (222), and the other end abuts against the bottom of the spring cavity (2211).

9. The water-gas linkage valve according to any one of claims 1 to 7, characterized in that: The gas valve assembly (100) further comprises a pressure stabilizing valve (3), wherein the pressure stabilizing valve (3) is detachably connected to the gas valve body (1) and is used to adjust the pressure of the gas outlet channel (12).

10. A gas appliance, characterized in that: It comprises a water-gas linkage valve as described in any one of claims 1-9.

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