A water gas linkage valve and gas water heating equipment

Abstract

The utility model belongs to valve technical field, specifically disclose a kind of water gas linkage valve and gas hot water equipment. Water gas linkage valve includes the gas valve body with gas inlet passage, the linkage valve body with outlet valve port and solenoid valve, gas inlet passage has inlet valve port, solenoid valve includes electromagnetic module, outer valve core subassembly and inner valve core subassembly, outer valve core subassembly has outer obturator, inner valve core subassembly has inner obturator, solenoid valve has the closing state that inner obturator and outer obturator both obturates inlet valve port and the opening state that inner obturator and outer obturator both open inlet valve port;Valve core has the sealing portion for obturating outlet valve port, the hardness of sealing portion is greater than the hardness of inner obturator and outer obturator.This utility model can improve the control accuracy and control sensitivity of valve core, improve the control accuracy of water gas linkage valve and gas hot water equipment, improve the thermostatic effect of gas hot water equipment.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a water-gas linkage valve and a gas-fired hot water equipment. Background Technology

[0002] Gas water heaters and wall-hung boilers are gas-fired water heating equipment that provide users with domestic hot water or heating hot water through the combustion of gas. They usually rely on water-gas linkage valves to achieve joint control of water and gas.

[0003] The prior art provides a water-gas interlocking valve including a water valve assembly, a gas valve assembly, and an interlocking valve assembly. The water valve assembly includes a water valve body with a water passage; the gas valve assembly includes a gas valve body with a gas passage, a solenoid valve, and a gas valve core assembly. The gas passage includes a connected gas inlet passage and a gas outlet passage. The solenoid valve is located at the gas inlet passage to control the opening and closing of the gas inlet passage, and the gas valve core assembly is located at the gas outlet passage to regulate the gas flow rate of the gas outlet passage. The linkage valve assembly includes a linkage valve body and a linkage component. The linkage valve body and the water valve body together form a water pressure chamber. The linkage valve body has a gas outlet channel separated from the water pressure chamber. An outlet valve port is provided at the connection between the gas outlet channel and the gas outlet channel. The linkage component includes a water pressure diaphragm, a linkage shaft, and a gas valve core. The water pressure diaphragm is located in the water pressure chamber and divides the water pressure chamber into a high-pressure chamber and a low-pressure chamber. The high-pressure chamber is connected to the water passage, and the low-pressure chamber is located on the side of the water pressure diaphragm facing the gas valve body. The two ends of the linkage shaft are connected to the water pressure diaphragm and the gas valve core, respectively.

[0004] When there is no water flow in the water passage, the gas valve core abuts against the opening plane of the gas outlet valve to block the gas outlet valve, thereby disconnecting the gas outlet passage and the gas exhaust passage. When there is water flow in the water passage, the water pressure in the high-pressure chamber increases, causing the water pressure diaphragm to deform in the direction towards the gas valve body under the action of the pressure difference on both sides. This causes the linkage shaft to move in the direction towards the gas valve body, thereby causing the gas valve core to separate from the opening plane of the gas outlet valve to open the gas outlet valve. This allows the gas outlet passage and the gas exhaust passage to be connected, and the gas flows into the combustion chamber in sequence through the gas inlet passage, the gas outlet passage, and the gas exhaust passage.

[0005] For safety, existing water-gas interlock valves achieve double sealing through a solenoid valve and a sealing ring on the gas valve core. However, the sealing ring is relatively soft. The gas valve core controls the opening and closing of the gas outlet by the fit between the sealing ring and the opening plane of the gas outlet. Because the sealing ring is elastic, it deforms and recovers when blocking the opening plane of the gas outlet. This causes the sealing ring to remain in contact with the opening plane when the linkage shaft begins to move, resulting in asynchronous opening of the water inlet and the gas outlet. The gas outlet opening is delayed, affecting the opening accuracy of the gas valve assembly. Simultaneously, it causes a mismatch between the displacement of the linkage shaft and the opening degree of the gas outlet, making it difficult to reliably adjust the gas outlet opening in real time according to the water flow. Consequently, the amount of gas entering the burner cannot be accurately controlled based on the water flow rate, affecting the temperature control effect of the gas-fired water heater. Utility Model Content

[0006] One of the technical problems solved by this utility model is to provide a water-air linkage valve that can improve the adjustment accuracy of the water-air linkage valve.

[0007] The second technical problem solved by this utility model is to provide a gas-fired water heater that can improve the constant temperature effect of the gas-fired water heater.

[0008] The first technical problem mentioned above is solved by the following technical solution:

[0009] A water-gas linkage valve includes a gas valve body with a gas inlet channel and a linkage valve body with an outlet valve. The gas inlet channel has an inlet valve. A solenoid valve for controlling the opening and closing of the inlet valve is provided at the gas valve body. A valve core for controlling the opening and closing of the outlet valve is provided in the linkage valve body. The valve core is connected to a water pressure diaphragm via a linkage shaft.

[0010] The solenoid valve includes an electromagnetic module, an outer valve core assembly, and an inner valve core assembly. The electromagnetic module is installed on the valve body. The first end of the outer valve core assembly is slidably inserted into the electromagnetic module and the second end has an outer sealing element. The inner valve core assembly is coaxially arranged with the outer valve core assembly, and the first end of the inner valve core assembly is slidably inserted into the outer valve core assembly and the second end has an inner sealing element.

[0011] Both the inner and outer sealing components are located within the gas intake passage. The solenoid valve has a closed state where both the inner and outer sealing components block the intake valve port, and an open state where both the inner and outer sealing components open the intake valve port.

[0012] The valve core has a sealing portion for sealing the outlet valve port, and the hardness of the sealing portion is greater than the hardness of the inner sealing member and the outer sealing member.

[0013] Compared with the prior art, the water-gas linkage valve of this utility model has the following advantages: the solenoid valve is used to connect and disconnect the gas source, and the valve core is used to close the gas valve port and move with the linkage shaft to adjust the opening of the gas outlet port; it can be seen that both the solenoid valve and the valve core can shut off the gas flow. Based on this, the inventor's design concept is to use the solenoid valve to shut off the gas flow more effectively, while the valve core is mainly used to quickly adjust the gas flow; therefore, the solenoid valve is equipped with an outer sealing part and an inner sealing part for sealing the inlet valve port. The hardness of the outer and inner sealing parts is relatively small, making it easy to produce elastic deformation, which can better seal the inlet valve port, so that when the solenoid valve is in the closed state, there are two seals at the gas inlet channel, which can improve safety; at the same time, the hardness of the sealing part is relatively large, making it less prone to elastic deformation, and thus, along the linkage shaft towards When the valve body moves in a certain direction, the valve core can quickly open the outlet valve port, effectively improving the problem of outlet valve port opening delay and enhancing the responsiveness of the valve core opening control, thereby improving the performance of the water-air linkage valve. Furthermore, the relatively high hardness of the sealing part reduces the influence of elastic deformation, making the relationship between the outlet valve port opening degree and the displacement of the linkage shaft more precise. This allows the real-time opening degree of the outlet valve port to better match the real-time flow changes of the water passage, improving the control accuracy of the outlet valve port opening and enhancing the regulation accuracy and sensitivity of the water-air linkage valve.

[0014] In one embodiment, the solenoid valve includes a main sleeve and a first elastic element, wherein a first end of the main sleeve is inserted into the solenoid module and a second end extends out of the solenoid module;

[0015] The external valve core assembly includes a first valve shaft and a mounting sleeve fixedly sleeved on the outside of the first valve shaft. The first end of the mounting sleeve is slidably inserted into the main sleeve, and the second end of the mounting sleeve extends out of the main sleeve and is connected to the external sealing member. The first elastic member is sleeved on the outside of the mounting sleeve and is used to apply an elastic force away from the electromagnetic module to the external sealing member.

[0016] The inner valve core assembly includes a second valve shaft coaxially arranged with the first valve shaft. The first end of the second valve shaft is slidably inserted into the mounting sleeve and the second end is connected to the inner sealing member. A second elastic member is sleeved on the second valve shaft, and the second elastic member applies an elastic force away from the electromagnetic module to the inner sealing member.

[0017] In one embodiment, the second end of the main sleeve is located outside the electromagnetic module and is open, and the first end of the main sleeve is sleeved outside the fixed iron core of the electromagnetic module, and a first sealing ring is provided between the main sleeve and the fixed iron core.

[0018] In one embodiment, the gas intake passage includes a first passage, a valve mounting cavity, and a second passage connected in sequence, and the connection between the valve mounting cavity and the second passage forms the intake valve port;

[0019] The solenoid valve includes a valve port frame with a movable cavity. The first end of the valve port frame is fixedly installed on the solenoid module and located in the valve mounting cavity. The second end of the valve port frame is sealed to the bottom of the valve mounting cavity. The second end of the valve port frame has a vent valve port that communicates with the air inlet valve port. The side of the valve port frame has a side vent port that communicates with the first channel and the movable cavity. The solenoid module is located outside the valve body, and the outer sealing member and the inner sealing member are movably disposed in the movable cavity.

[0020] When the solenoid valve is in the closed state, the inner sealing member blocks the vent valve port, and the outer sealing member blocks the periphery of the vent valve port. When the solenoid valve is in the open state, both the inner and outer sealing members separate from the valve port holder to connect the movable cavity with the vent valve port.

[0021] In one embodiment, the main sleeve includes a main sleeve portion inserted inside the electromagnetic module and a fixed sleeve portion connected to one end of the main sleeve portion. The fixed sleeve portion is located outside the electromagnetic module and connected to the valve port bracket. The end of the first elastic member away from the outer sealing member abuts against the fixed sleeve portion.

[0022] Alternatively, the main sleeve is inserted into the electromagnetic module, and the electromagnetic valve further includes a fixed seat installed at one end of the electromagnetic module. The fixed seat is sleeved on the outside of the outer valve core assembly and connected to the valve port bracket. The end of the first elastic member away from the outer sealing member abuts against the fixed seat.

[0023] In one embodiment, the electromagnetic module includes a coil assembly, a magnetic guide frame, and a magnetic guide plate. The magnetic guide frame is U-shaped and one end is connected to the end of the coil assembly away from the valve port frame. The magnetic guide plate is disposed at the other end of the coil assembly and connected to two sides of the magnetic guide frame. The outer valve core assembly passes through the magnetic guide plate.

[0024] The magnetic guide plate includes an inner magnetic guide plate and an outer magnetic guide plate that are stacked and separately arranged. The inner magnetic guide plate is sandwiched between the outer magnetic guide plate and the coil assembly. The end of the main sleeve passes through the inner magnetic guide plate and is confined between the outer magnetic guide plate and the first valve shaft.

[0025] In one embodiment, the inner hole of the outer magnetic plate is folded to form an annular boss portion, and the annular boss portion and the first valve shaft together form a limiting annular groove, and the end of the main sleeve is inserted into the limiting annular groove;

[0026] And / or, the inner hole of the outer magnetic plate is folded to form an annular boss portion, the annular boss portion and the inner magnetic plate surround to form a sealing ring groove, a second sealing ring is provided in the sealing ring groove, the second sealing ring is interference-fitted on the main sleeve and abuts against both the inner magnetic plate and the outer magnetic plate.

[0027] In one embodiment, the inner hole of the fixing seat is folded to form a positioning protrusion ring, and one end of the first elastic member is sleeved on the outside of the positioning protrusion ring.

[0028] And / or, the fixing base includes a fixing plate and a mounting ring connected to the outer edge of the fixing plate. The fixing plate is connected to the electromagnetic module. The mounting ring has a plurality of connecting hooks spaced circumferentially at one end away from the fixing plate. The first end of the valve port bracket is inserted into the mounting ring and abuts against the fixing plate. The side vents have a plurality of spaced circumferentially spaced along the valve port bracket. The connecting hooks are hooked to the edge of the side vents.

[0029] In one embodiment, the valve holder includes a sealing end and a side plate portion connected to the periphery of the sealing end. The side plate portion has the side vent. The sealing end has an outer sealing ring portion and an inner sealing ring portion protruding in the direction toward the electromagnetic module. The inner sealing ring portion surrounds the vent valve port. The outer sealing ring portion is coaxial and spaced around the outside of the inner sealing ring portion. When the electromagnetic valve is in the closed state, the outer sealing member abuts against the outer sealing ring portion, and the inner sealing member abuts against the inner sealing ring portion.

[0030] And / or, the valve holder includes a sealing end and a side plate portion connected to the periphery of the sealing end, the side plate portion having the side vent, the sealing end having a central recess formed in a direction away from the electromagnetic module, the vent valve port being opened in the central recess, and a valve port seal being provided between the valve holder and the valve mounting cavity, the valve port seal surrounding the outside of the central recess.

[0031] The second technical problem mentioned above is solved by the following technical solution:

[0032] A gas-fired hot water device includes a water-gas interlock valve as described above.

[0033] Compared with the prior art, the gas-fired water heater of this utility model has the following advantages: by adopting the above-mentioned water-gas linkage valve, the control accuracy of water-gas linkage of the gas-fired water heater can be improved, the constant temperature performance of the gas-fired water heater can be enhanced, and the user experience of the gas-fired water heater can be improved. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of the water-air linkage valve provided in Embodiment 1 of this utility model;

[0035] Figure 2 A stepped sectional view of the water-air linkage valve provided in Embodiment 1 of this utility model;

[0036] Figure 3 A cross-sectional view of the water-air linkage valve provided in Embodiment 1 of this utility model;

[0037] Figure 4 for Figure 3 A magnified view of a section at point I;

[0038] Figure 5 This is a cross-sectional view of the water-air linkage valve at the solenoid valve in Embodiment 1 of this utility model;

[0039] Figure 6 This is a schematic diagram of the structure of the solenoid valve provided in Embodiment 1 of this utility model;

[0040] Figure 7 This is a cross-sectional view of the water-air linkage valve at the solenoid valve in Embodiment 2 of this utility model;

[0041] Figure 8 for Figure 7 A magnified view of a section at point J;

[0042] Figure 9 A schematic diagram showing the disassembled structure of the solenoid valve provided in Embodiment 2 of this utility model;

[0043] Figure 10 This is a schematic diagram of the structure of the solenoid valve provided in Embodiment 3 of this utility model;

[0044] Figure 11 This is a partial cross-sectional view of the water-air linkage valve provided in Embodiment 3 of this utility model when the solenoid valve is in the open state;

[0045] Figure 12 The figure shows a partial cross-sectional view of the water-air linkage valve provided in Embodiment 3 of the utility model when the solenoid valve is in the closed state.

[0046] Figure 13 for Figure 12 A magnified view of the area at point K.

[0047] Label Explanation:

[0048] 100. Gas valve assembly; 200. Water valve assembly; 210. Water valve body; 2101. Water passage; 220. Water valve core assembly; 300. Linkage valve assembly; 301. Linkage valve body; 302. Hydraulic diaphragm; 303. Linkage shaft; 304. Valve core; 3041. Main body; 3042. Adjusting cone; 3043. Sealing part; 305. Valve retainer ring; 3051. Gas outlet valve port; 306. Gas outlet passage; 307. First elastic reset element; 400. High-pressure chamber; 500. Low-pressure chamber; 600. Second elastic reset element;

[0049] 10. Solenoid valve; 20. Gas valve body; 201. Gas inlet passage; 2011. First passage; 2012. Valve mounting cavity; 2013. Second passage; 2014. Inlet valve port; 202. Gas outlet passage; 30. Pressure regulator; 40. Gas valve core assembly; 50. Valve port seal; 60. Mounting seal;

[0050] 1. Electromagnetic module; 11. Coil bracket; 12. Coil assembly; 13. Plastic-encapsulated housing; 14. Magnetic guide frame; 15. Magnetic guide plate; 151. Inner magnetic guide plate; 152. Outer magnetic guide plate; 1521. Boss; 1522. Limiting ring groove; 153. Sealing ring groove; 16. Fixed iron core; 161. Protrusion;

[0051] 2. External valve core assembly; 21. First valve shaft; 211. Groove portion; 212. Insertion protrusion; 213. Snap-fit ​​ring groove; 22. Mounting sleeve; 23. External sealing component;

[0052] 3. Inner valve core assembly; 31. Second valve shaft; 311. Insertion groove; 32. Inner sealing element; 33. Mounting base; 34. Second elastic element;

[0053] 4. Main sleeve; 41. Main sleeve section; 42. End plate section; 43. Enclosure section; 44. Limiting hook section;

[0054] 5. Valve port bracket; 51. Sealing end; 511. Central recess; 512. Outer sealing ring; 513. Inner sealing ring; 514. Vent valve port; 52. Side panel; 521. Side vent.

[0055] 6. First elastic element;

[0056] 7. Fixing base; 71. Fixing plate; 72. Positioning protrusion ring; 73. Mounting ring; 74. Connecting hook;

[0057] 81. First sealing ring; 82. Second sealing ring; 83. Third sealing ring. Detailed Implementation

[0058] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0059] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0060] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0061] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0062] Example 1

[0063] This embodiment provides a water-gas linkage valve, which can be applied to gas-fired water heating equipment to achieve synchronous regulation of water and gas intake, thereby facilitating constant temperature control of the gas-fired water heating equipment.

[0064] like Figure 1 and Figure 2As shown, the water-gas interlock valve includes a gas valve assembly 100, an interlock valve assembly 300, and a water valve assembly 200. The water valve assembly 200 is connected to the gas valve assembly 100 via the interlock valve assembly 300. Water enters through the water valve assembly 200, generating inlet pressure inside. This inlet pressure controls the interlock valve assembly 100 via the interlock valve assembly 300, causing the gas passage of the gas valve assembly 100 to open. The gas enters the gas passage and flows to the combustion chamber for ignition and combustion, providing heat to the water and thus supplying hot water.

[0065] The gas valve assembly 100 includes a gas valve body 20, a solenoid valve 10, a pressure regulating valve 30, and a gas valve core assembly 40. The gas valve body 20 contains a gas inlet passage 201 and a gas outlet passage 202. The inlet end of the gas inlet passage 201 forms the inlet of the gas valve assembly 100, and the gas inlet passage 201 has an inlet valve port 2014. The solenoid valve 10 is installed in the gas valve body 20 to control the opening and closing of the inlet valve port 2014. The pressure regulating valve 30 is installed in the gas valve body 20 and has a pressure-regulating gas passage inside, which connects the outlet end of the gas inlet passage 201 and the inlet end of the gas outlet passage 202. The pressure regulating valve 30 is used to regulate the gas pressure. The gas valve core assembly 40 is installed in the gas valve body 20 and is used to regulate the gas flow rate in the gas outlet passage 202.

[0066] It is worth noting that the specific structure and function of the valve body 20, the pressure regulating valve 30, and the valve core assembly 40 can all be set with reference to the existing technology. This is not the focus of this utility model and will not be elaborated here.

[0067] like Figures 2 to 5 As shown, the water valve assembly 200 includes a water valve body 210 and a water valve core assembly 220. The water valve body 210 is provided with a water passage 2101, and the water valve core assembly 220 is used to control the water flow rate of the water passage 2101. The specific structure of the water valve assembly 200 can be set with reference to the prior art, which is not the focus of this utility model and will not be limited or described in detail here.

[0068] The linkage valve assembly 300 includes a linkage valve body 301, a water pressure diaphragm 302, a linkage shaft 303, and a valve core 304. The first end of the linkage valve body 301 is connected to the water valve body 210 and forms a water pressure chamber with the water valve body 210. The water pressure diaphragm 302 is installed in the water pressure chamber and divides the water pressure chamber into a high pressure chamber 400 and a low pressure chamber 500. The low pressure chamber 500 is located on the side of the water pressure diaphragm 302 facing the gas valve body 20. The high pressure chamber 400 is connected to the water passage 2101. The linkage valve body 301 is provided with a gas outlet passage 306 that is connected to the gas outlet end of the gas outlet passage 202. The gas outlet passage 306 is separated from the water pressure chamber. A gas outlet valve port 3051 is provided at the connection between the gas outlet passage 306 and the gas outlet passage 202. The valve core 304 is movably disposed in the linkage valve body 301 to selectively open or close the gas outlet valve port 3051. The two ends of the linkage shaft 303 are respectively connected to the water pressure diaphragm 302 and the valve core 304.

[0069] When water flows into the water passage 2101, the water pressure acts on the water pressure diaphragm 302, causing the water pressure diaphragm 302 to deform in the direction toward the valve body 20. This causes the linkage shaft 303 to move in the direction toward the valve assembly 100, which in turn causes the valve core 304 to move to open the outlet valve 3051, so that the gas outlet passage 202 and the gas outlet passage 306 are connected, and the gas can flow out into the combustion chamber. When there is no water flow in the water passage 2101, the water pressure diaphragm 302 resets under the pressure difference on both sides, causing the linkage shaft 303 to move in the direction toward the water valve assembly 200, which in turn causes the valve core 304 to move in the direction toward the water valve assembly 200 to close the outlet valve 3051.

[0070] In this embodiment, the solenoid valve 10 includes an electromagnetic module 1, an outer valve core assembly 2, and an inner valve core assembly 3. The electromagnetic module 1 is installed on the gas valve body 20. The first end of the outer valve core assembly 2 is slidably inserted into the electromagnetic module 1, and the second end has an outer sealing member 23. The inner valve core assembly 3 is coaxially arranged with the outer valve core assembly 2, and the first end of the inner valve core assembly 3 is slidably inserted into the outer valve core assembly 2, and the second end has an inner sealing member 32. Both the inner sealing member 32 and the outer sealing member 23 are located in the gas intake passage 201. The solenoid valve 10 has a closed state in which both the inner sealing member 32 and the outer sealing member 23 block the intake valve port 2014, and an open state in which both the inner sealing member 32 and the outer sealing member 23 open the intake valve port 2014.

[0071] The valve core 304 has a sealing portion 3043 for sealing the outlet valve port 3051, and the hardness of the sealing portion 3043 is greater than the hardness of the inner sealing member 32 and the outer sealing member 23.

[0072] That is, the water-gas linkage valve provided in this embodiment has two seals at the gas intake passage 201 when the solenoid valve 10 is in the closed state, because the solenoid valve 10 is provided with an outer sealing member 23 and an inner sealing member 32 for sealing the gas inlet valve port 2014, which can improve safety; the sealing part 3043 has relatively high hardness and is not easy to deform, so when the linkage shaft 303 moves in the direction toward the valve body 20, the valve core 304 can quickly open the gas outlet valve port 3051, which can effectively improve the opening delay of the gas outlet valve port 3051. This effectively improves the accuracy and responsiveness of valve opening control, thereby enhancing the performance of the water-air linkage valve. Furthermore, the relatively high hardness of the sealing part 3043 reduces the influence of elastic deformation, making the relationship between the opening degree of the air outlet 3051 and the displacement of the linkage shaft 303 more precise. This, in turn, makes the real-time opening degree of the air outlet 3051 more closely match the real-time flow rate change of the water passage 2101, improving the control accuracy of the air outlet 3051 opening degree and enhancing the regulation accuracy and sensitivity of the water-air linkage valve.

[0073] In one embodiment, the valve core 304 includes a main body 3041 and an adjusting cone 3042 coaxially connected. The adjusting cone 3042 is connected to the side of the main body 3041 facing the water valve assembly 200. The cross-sectional area of ​​the adjusting cone 3042 gradually decreases in the direction away from the main body 3041, that is, the small end of the adjusting cone 3042 faces the water pressure diaphragm 302. The adjusting cone 3042 passes through the air outlet 3051, and a sealing part 3043 is provided protruding from the outer wall of the main body 3041.

[0074] When the valve core 304 blocks the outlet valve port 3051, the adjusting cone 3042 is located in the gas outlet passage 306; when the valve core 304 moves in the direction toward the water valve assembly 200, the adjusting cone 3042 passes through the outlet valve port 3051. Thus, by adjusting the position of the adjusting cone 3042 relative to the outlet valve port 3051, the opening of the outlet valve port 3051 can be adjusted, thereby adjusting the gas flow rate.

[0075] In one embodiment, a first elastic reset member 307 is provided inside the linkage valve body 301. The first elastic reset member 307 is sleeved on the linkage shaft 303 and is used to apply an elastic restoring force toward the water pressure diaphragm 302 to the linkage shaft 303. A second elastic reset member 600 is provided inside the air valve body 20. The second elastic reset member 600 acts on the valve core 304 and is used to apply an elastic restoring force toward the water pressure diaphragm 302 to the valve core 304. The provision of the first elastic reset member 307 and the second elastic reset member 600 facilitates the reset of the linkage shaft 303 and the valve core 304, so as to ensure that when there is no water flow in the water passage 2101, the valve core 304 can quickly return to the state of blocking the air outlet 3051.

[0076] To improve the ease of setting the air outlet 3051, in one embodiment, a valve retainer ring 305 is installed inside the linkage valve body 301, and an air outlet 3051 is opened on the valve retainer ring 305. This allows the machining accuracy of the air outlet 3051 to be controlled by controlling the machining accuracy of the valve retainer ring 305, thereby reducing the machining requirements of the linkage valve assembly 300 and reducing the cost of the water-air linkage valve.

[0077] Other structures of the linkage valve assembly 300 can be set with reference to existing technology, which is not the focus of this utility model and will not be limited or described in detail here.

[0078] like Figure 5 and Figure 6 As shown, the gas intake passage 201 includes a first passage 2011, a valve mounting cavity 2012, and a second passage 2013 connected in sequence. The connection between the valve mounting cavity 2012 and the second passage 2013 forms an intake valve port 2014. One end of the valve mounting cavity 2012, away from the second passage 2013, passes through the gas valve body 20 and forms a mounting port. The solenoid valve 10 is sealed and installed at the mounting port. Specifically, the solenoid module 1 is located outside the gas valve body 20, and the inner sealing member 32 and the outer sealing member 23 are movably disposed within the valve mounting cavity 2012. A mounting seal 60 is provided between the solenoid module 1 and the gas valve body 20 to seal the mounting gap between the solenoid valve 10 and the gas valve body 20, preventing gas leakage through the mounting port.

[0079] The solenoid valve 10 also includes a main sleeve 4 and a first elastic element 6. The first end of the main sleeve 4 is inserted into the solenoid module 1 and the second end extends out of the solenoid module 1. The outer valve core assembly 2 includes a first valve shaft 21 and a mounting sleeve 22 fixedly sleeved outside the first valve shaft 21. The first end of the mounting sleeve 22 is slidably inserted into the main sleeve 4, and the second end of the mounting sleeve 22 extends out of the main sleeve 4 and is connected to the outer sealing element 23. The first elastic element 6 is sleeved outside the mounting sleeve 22 and is used to apply an elastic force away from the solenoid module 1 to the outer sealing element 23. The inner valve core assembly 3 includes a second valve shaft 31 coaxially arranged with the first valve shaft 21. The first end of the second valve shaft 31 is slidably inserted into the mounting sleeve 22 and the second end is connected to the inner sealing element 32. A second elastic element 34 is sleeved on the second valve shaft 31, and the second elastic element 34 applies an elastic force away from the solenoid module 1 to the inner sealing element 32.

[0080] When the electromagnetic module 1 is powered on, the inner valve core assembly 3 and the outer valve core assembly 2 move toward the electromagnetic module 1 under the action of the magnetic field force, so that the inner sealing member 32 and the outer sealing member 23 open the air intake valve port 2014, that is, the solenoid valve 10 is in the open state; when the electromagnetic module 1 is de-powered, the outer valve core assembly 2 moves away from the electromagnetic module 1 under the action of the elastic force of the first elastic member 6, and the inner valve core assembly 3 moves away from the electromagnetic module 1 under the action of the elastic force of the second elastic member 34, so that the inner sealing member 32 and the outer sealing member 23 both block the air intake valve port 2014, and the solenoid valve 10 switches to the closed state.

[0081] In one embodiment, the solenoid valve 10 includes a valve port frame 5 with a movable cavity. The first end of the valve port frame 5 is fixedly installed on the solenoid module 1 and located in the valve mounting cavity 2012. The second end of the valve port frame 5 is sealed to the bottom of the valve mounting cavity 2012. The second end of the valve port frame 5 is provided with a vent valve port 514 that communicates with the air inlet valve port 2014. The side of the valve port frame 5 is provided with a side vent port 521 that communicates with the first channel 2011 and the movable cavity. The outer sealing member 23 and the inner sealing member 32 are movably disposed in the movable cavity.

[0082] When the solenoid valve 10 is in the closed state, the inner sealing member 32 blocks the vent valve port 514, and the outer sealing member 23 blocks the periphery of the vent valve port 514; when the solenoid valve 10 is in the open state, both the inner sealing member 32 and the outer sealing member 23 are separated from the valve port frame 5 to conduct the movable chamber and the vent valve port 514, thereby making the first channel 2011, the valve mounting chamber 2012, the movable chamber, the vent valve port 514, the air inlet valve port 2014 and the second channel 2013 sequentially connected.

[0083] Because the solenoid valve 10 is equipped with a valve holder 5 connected to the solenoid module 1, and the valve holder 5 has a vent valve 514 communicating with the intake valve port 2014, the opening and closing of the vent valve 514 on the valve holder 5 by the inner valve core assembly 3 and the outer valve core assembly 2 can control the gas intake channel 201 on the valve body 20. The main solenoid valve can be assembled together to form an independent module, and the airtightness of the module can be tested. Thus, the solenoid valve 10 can be separated from the valve body 20 for testing the cooperation of the vent valve 514, the inner sealing component 32, and the outer sealing component 23, without the need for... During testing, the solenoid valve 10 is assembled onto the valve body 20, improving the testing efficiency and convenience of the solenoid valve 10. Simultaneously, since the vent valve port 514 is located on the valve holder 5, if the solenoid valve 10 is unsuitable for testing, it can be replaced by repairing or reprocessing the valve holder 5. Compared to reprocessing or repairing the valve body 20, this method is less costly. Furthermore, during later maintenance, the corresponding module of the solenoid valve 10 can be replaced individually without disassembling the valve body 20, making maintenance convenient and effectively reducing the processing and maintenance costs of the solenoid valve 10. To ensure sealing, in one embodiment, a valve port seal 50 is pressed between the valve holder 5 and the wall of the valve mounting cavity 2012, and the valve port seal 50 surrounds the outside of the vent valve port 514 and the inlet valve port 2014.

[0084] The electromagnetic module 1 includes a coil assembly 12, a fixed iron core 16, and a magnetic guide assembly. The coil assembly 12 includes a coil support 11 with a central hole, a coil mounted on the coil support 11, and a plastic-encapsulated housing 13 surrounding the coil. The fixed iron core 16 is mounted at the end of the central hole away from the vent valve 514. The magnetic guide assembly includes a magnetic guide frame 14 and a magnetic guide plate 15. The magnetic guide frame 14 includes a top plate and a side plate vertically connected. The top plate is connected to the end of the coil support 11 facing the vent valve 514, and the side plate is located outside the coil assembly 12. The magnetic guide plate 15 is mounted at the end of the coil assembly 12 away from the top plate and connected to the side plate, such that the coil assembly 12 is located between the magnetic guide frame 14 and the magnetic guide plate 15. The end of the fixed iron core 16 away from the vent valve 514 is mounted on the magnetic guide plate 15. When the coil is energized, the coil, in conjunction with the fixed iron core 16, generates an electromagnetic force. This electromagnetic force acts on the inner valve core assembly 3 and the outer valve core assembly 2, driving them to move axially. It is worth noting that the electromagnetic module 1 can adopt a structure found in existing technologies; however, this is not the focus of this invention, and the specific structure of the electromagnetic module 1 is not limited or described in detail here.

[0085] To improve the assembly efficiency and accuracy of the main sleeve 4 and the valve holder 5, in one embodiment, the main sleeve 4 includes a main sleeve portion 41 and a fixed sleeve portion coaxially connected. The main sleeve portion 41 is inserted into the central hole, and the fixed sleeve portion is located on the side of the electromagnetic module 1 facing the vent valve port 514 with its open end facing the vent valve port 514. The outer diameter of the fixed sleeve portion is larger than the outer diameter of the main sleeve portion 41. The first valve shaft 21 is slidably inserted into the main sleeve portion 41, and the fixed sleeve portion is located outside the electromagnetic module 1 and connected to the valve holder 5. The end of the first elastic member 6 away from the outer sealing member 23 abuts against the fixed sleeve portion. By setting the main sleeve portion 41, it is beneficial to realize the cooperation between the main sleeve 4 and the electromagnetic module 1 and the first valve shaft 21. By setting the fixed sleeve portion, it is beneficial to improve the installation convenience of the valve holder 5.

[0086] In one embodiment, the main sleeve 41 is open at both ends, and the end of the main sleeve 41 away from the valve holder 5 is fixedly sleeved on the outside of the fixed iron core 16. A first sealing ring 81 is provided between the main sleeve 41 and the fixed iron core 16. This arrangement simplifies the structure of the main sleeve 4 and shortens the distance between the fixed iron core 16 and the first valve shaft 21, thereby increasing the electromagnetic force acting on the first valve shaft 21. Furthermore, an annular groove is provided on the fixed iron core 16, and the end of the main sleeve 41 is bent to form a retaining ring portion, which is engaged in the annular groove to restrict the axial movement of the main sleeve 4 relative to the fixed iron core 16, ensuring the stability and reliability of the main sleeve 4.

[0087] To enhance the electromagnetic force acting on the outer valve core assembly 2, in one embodiment, one of the fixed iron core 16 and the first valve shaft 21 is provided with a protrusion 161, and the other is provided with a groove 211. The protrusion 161 can be inserted into the groove 211, thereby further shortening the distance between the fixed iron core 16 and the first valve shaft 21 and enhancing the magnetic force. Specifically, when the electromagnetic module 1 is in the open state, the protrusion 161 is inserted into the middle of the groove. Further, the groove 211 is an annular groove, and the protrusion 161 is a structure adapted to the groove 211.

[0088] In one embodiment, the first end of the valve port bracket 5 is coaxially inserted into the fixed cylinder, thereby ensuring the coaxiality of the fixed cylinder and the valve port bracket 5 through the insertion and engagement of the valve port bracket 5 and the fixed cylinder, thus ensuring the coaxiality of the inner cavity of the main sleeve 4 and the vent valve port 514; at the same time, the insertion and engagement of the fixed cylinder and the valve port bracket 5 can provide positioning for the assembly of the two, improving the disassembly and assembly efficiency of the solenoid valve 10; the outer diameter of the fixed cylinder is larger than the outer diameter of the main cylinder 41, which can also avoid interference between the valve port bracket 5 and the outer valve core assembly 2.

[0089] In one embodiment, the valve holder 5 has a cylindrical structure. The first end of the cylindrical structure is inserted into the fixed cylinder, and the other end of the cylindrical structure has a vent valve port 514. A side vent port 521 is provided on the side wall of the cylindrical structure. The cylindrical structure is coaxially arranged with the main sleeve 4 to better ensure the coaxiality of the valve holder 5 and the main sleeve 4. Simultaneously, the cylindrical structure of the valve holder 5 helps to ensure the overall structural strength and rigidity of the valve holder 5. In other embodiments, the valve holder 5 can also have a U-shaped structure. One side of the U-shaped structure is connected to the main sleeve 4, and the opposite side of the U-shaped structure has a vent valve port 514.

[0090] To simplify the structure of the valve holder 5, the first end of the valve holder 5 is open to facilitate the passage of the outer valve core assembly 2 and the inner valve core assembly 3. Specifically, the valve holder 5 includes a sealing end 51 and a side plate portion 52 surrounding the periphery of the sealing end 51. The sealing end 51 is opposite to and spaced apart from the main sleeve 4. The sealing end 51 has a vent valve port 514, and the side plate portion 52 has a side vent port 521. The end of the side plate portion 52 away from the sealing end 51 is inserted into the fixed cylinder portion. To reduce the processing difficulty of the valve holder 5, in one embodiment, the valve holder 5 is integrally formed, thereby improving the overall structural strength and rigidity of the valve holder 5 and reducing the processing difficulty.

[0091] In one embodiment, multiple side vents 521 are provided at circumferential intervals along the valve holder 5, thereby reducing the alignment accuracy requirements between the solenoid valve 10 and the valve body 20 in the circumferential direction and ensuring that the side vents 521 can always be connected to the first channel 2011. In other embodiments, only one side vent 521 may be provided.

[0092] An axial limiting structure is provided between the valve port bracket 5 and the main sleeve 4. The axial limiting structure restricts the valve port bracket 5 from moving axially relative to the main sleeve 4, thereby ensuring that the distance between the vent valve port 514 and the end of the electromagnetic module 1 can remain stable, and ensuring the assembly reliability of the electromagnetic valve 10 on the valve body 20.

[0093] In one embodiment, the axial positioning structure includes a limiting hook 44 disposed at the opening end of the fixed cylinder. The limiting hook 44 hooks with the edge of the side vent 521 facing the electromagnetic module 1, thereby restricting the movement of the vent valve 514 plate away from the electromagnetic module 1 by engaging with the edge of the side vent 521. The limiting hook 44 and the side vent 521 are provided in a one-to-one correspondence to ensure the overall force stability and force balance of the valve holder 5. Furthermore, the first end of the valve holder 5 abuts against the bottom of the fixed cylinder to restrict the movement of the valve holder 5 relative to the main sleeve 4 in the direction towards the electromagnetic module 1, thereby effectively restricting the movement of the valve holder 5 along the axial direction.

[0094] To simplify the fit between the main sleeve 4 and the valve holder 5, in one embodiment, the first end of the valve holder 5 is inserted into the fixed cylinder. This facilitates the formation of a limiting hook 44 by bending the edge of the opening of the fixed cylinder after the valve holder 5 is inserted into the fixed cylinder, thereby improving the ease of assembly and disassembly of the main sleeve 4 and the valve holder 5, and facilitating the connection between the limiting hook 44 and the edge of the side vent 521. Specifically, the mounting cylinder includes an end plate 42 and a surrounding wall 43 perpendicularly surrounding the periphery of the end plate 42. Multiple limiting hooks 44 are circumferentially arranged at the end of the surrounding wall 43 away from the end plate 42.

[0095] In other embodiments, the fixed cylinder may be inserted inside the valve port frame 5. However, it is understood that the valve port frame 5 and the fixed cylinder may also be positioned using other axial positioning structures. For example, a positioning hole may be provided in one of the valve port frame 5 and the fixed cylinder, and a positioning protrusion may be provided in the other. Multiple positioning protrusions may be provided at intervals along the circumference of the valve port frame 5, and the positioning hole and the positioning protrusion may be provided in a one-to-one correspondence. The positioning protrusion is inserted into the positioning hole.

[0096] In one embodiment, the valve port bracket 5 is riveted to the main sleeve 4, thereby avoiding the increase in parts caused by screw connections and effectively improving the connection stability and reliability of the valve port bracket 5 and the main sleeve 4. In another embodiment, an internal thread can be provided on the inner wall of the fixed cylinder, and an external thread can be provided on the outer side of the first end of the valve port bracket 5, with the valve port bracket 5 and the fixed cylinder threaded together. In yet another embodiment, the valve port bracket 5 and the fixed cylinder can also be welded or connected by a detachable connection method such as snap-fit ​​or screw connection.

[0097] The sealing end 51 is recessed in a direction away from the electromagnetic module 1, forming a central recess 511. The bottom of the central recess 511 has a vent valve port 514. An inner sealing surface is provided on the inner side of the central recess 511, and the sealing end 51 is positioned on the outer sealing surface on the outer side of the central recess 511. The outer sealing surface is closer to the electromagnetic module 1 than the inner sealing surface. When the electromagnetic valve 10 is closed, the inner sealing member 32 is sealed against the inner sealing surface, and the outer sealing member 23 is sealed against the outer sealing surface. This arrangement ensures that when the electromagnetic valve 10 is closed, the inner sealing member 32 extends beyond the outer sealing member 23, thereby guaranteeing the sealing effect of the inner sealing member 32 on the vent valve port 514 and reducing interference between the outer sealing member 23 and the inner sealing member 32. In another embodiment, the outer sealing surface and the inner sealing surface can be coplanar. In another embodiment, the outer sealing surface can be further away from the electromagnetic module 1 than the inner sealing surface.

[0098] When the solenoid valve 10 is assembled onto the valve body 20, the outer bottom of the central recess 511 abuts against the cavity wall of the valve mounting cavity 2012, and the portion of the sealing end 51 without the central recess 511 is spaced apart from the bottom of the valve mounting cavity 2012. In one embodiment, the valve port seal 50 is pressed between the sealing end 51 and the bottom of the valve mounting cavity 2012 to reduce assembly difficulty and ensure sealing. In other embodiments, the valve port seal 50 may also be pressed between the side panel portion 52 and the peripheral cavity wall of the valve mounting cavity 2012.

[0099] Furthermore, an inner sealing ring 513 is formed by protruding from the bottom of the central recess 511 in the direction toward the electromagnetic module 1. The inner ring of the inner sealing ring 513 forms a vent valve port 514. The inner sealing ring 513 is spaced apart from the bottom of the valve mounting cavity 2012. This allows the inner sealing ring 513 to deform in the direction toward the vent valve port 2014 when the inner sealing member 32 is pressed against the inner sealing surface, thereby making the inner sealing member 32 fit tightly against the inner sealing surface. At the same time, the inner sealing ring 513 is arc-shaped, which facilitates the compression of the inner sealing member 32 and further ensures the sealing performance after mating.

[0100] In one embodiment, the mounting sleeve 22 is open at both ends, with the first end of the mounting sleeve 22 fitted over the outside of the first valve shaft 21. The second end of the main sleeve 4 is connected to the outer sealing member 23. The inner diameter of the first end of the mounting sleeve 22 is smaller than the inner diameter of the second end of the mounting sleeve 22. This allows for an increase in the outer diameter of the second end of the mounting sleeve 22 while keeping the diameter of the first valve shaft 21 constant. Consequently, the outer sealing member 23 can have a relatively large outer diameter, facilitating the passage of the second valve shaft 31 and the inner sealing member 32 through the outer sealing member 23. Preferably, a third sealing ring 83 is provided between the mounting sleeve 22 and the first valve shaft 21 to prevent leakage.

[0101] To improve the assembly stability of the mounting sleeve 22 and the first valve shaft 21, a retaining ring groove 213 is provided on the outer side wall of the first valve shaft 21. The first end of the mounting sleeve 22 is bent inward to form a limiting ring portion, which is engaged in the retaining ring groove 213 to restrict the axial movement of the mounting sleeve 22 relative to the first valve shaft 21. The third sealing ring 83 is located on the side of the limiting ring portion facing the outer sealing member 23.

[0102] To improve the structural strength and rigidity of the mounting sleeve 22, in one embodiment, the mounting sleeve 22 includes a first cylindrical section and a second cylindrical section coaxially connected in sequence with gradually increasing diameters. The first cylindrical section is fixedly sleeved on the outside of the first valve shaft 21, and the diameter of the first cylindrical section is equal everywhere. The second valve shaft 31 is slidably fitted with the first cylindrical section. The second cylindrical section is connected to the end of the first cylindrical section away from the electromagnetic module 1, and the diameter of the second cylindrical section is larger than that of the first cylindrical section. The second cylindrical section is connected to the outer sealing member 23. This structure of the mounting sleeve 22 facilitates the sliding guidance of the second valve shaft 31 through the cooperation between the first cylindrical section and the second valve shaft 31, ensuring the sliding reliability of the second valve shaft 31. By setting the second cylindrical section, the outer diameter of the mounting sleeve 22 is increased, thereby improving the connection convenience between the mounting sleeve 22 and the outer sealing member 23.

[0103] Specifically, the outer sealing member 23 is interference-fitted onto the outside of the second cylindrical portion. The end of the second cylindrical portion has a fixed edge folded outward. The outer sealing member 23 has an annular groove, and the fixed edge is inserted into the annular groove and abuts against the groove wall on the side of the annular groove facing the electromagnetic module 1, thereby preventing the outer sealing member 23 from dislodging from the mounting sleeve 22. In other embodiments, other structural connections may also be used.

[0104] In one embodiment, the first elastic member 6 is sleeved on the outside of the mounting sleeve 22, with both ends abutting against the main sleeve 4 and the outer sealing member 23, respectively. Specifically, the end plate portion 42 of the main sleeve 4 protrudes in the direction toward the vent valve port 514 to form a raised portion, and the first end of the first elastic member 6 is sleeved on the outside of the raised portion and abuts against the bottom of the fixed cylinder portion to provide positioning for the installation of the first elastic member 6. In other embodiments, the second end of the first elastic member 6 may also abut against the outer sealing member 23. In other embodiments, the second end of the first elastic member 6 may also abut against the mounting sleeve 22.

[0105] In one embodiment, one of the first valve shaft 21 and the second valve shaft 31 has a protruding insertion protrusion 212 and the other has an insertion groove 311. The insertion protrusion 212 can be inserted into the insertion groove 311. Thus, the cooperation between the insertion protrusion 212 and the insertion groove 311 can guide the sliding of the second valve shaft 31 relative to the first valve shaft 21, avoid interference between the first valve shaft 21 and the second valve shaft 31, and at the same time reduce the distance between the first valve shaft 21 and the second valve shaft 31, thereby enhancing the electromagnetic force acting on the second valve shaft 31.

[0106] The second valve shaft 31 includes a first shaft portion, a second shaft portion, and a connecting shaft portion coaxially connected in sequence along the axial direction. The outer diameter of the second shaft portion is smaller than the outer diameter of the first shaft portion. The first shaft portion is slidably inserted into the mounting sleeve 22, and the connecting shaft portion is connected to the inner sealing member 32. The second elastic member 34 is sleeved on the outside of the second shaft portion, and the first end of the second elastic member 34 abuts against the stepped surface inside the mounting sleeve 22, while the second end of the second elastic member 34 is grounded to the inner sealing member 32. This increases the diameter of the second elastic member 34, facilitating the selection of the second elastic member 34 and ensuring that the elastic force of the second elastic member 34 is sufficient to cause the inner valve core assembly 3 to reset. Specifically, one end of the second elastic member 34 abuts against the bottom of the second cylinder portion. In other embodiments, the second elastic member 34 may also be disposed between the first valve shaft 21 and the second valve shaft 31.

[0107] In one embodiment, a mounting seat 33 is sleeved on the outer side of the second valve shaft 31. The mounting seat 33 is coaxially connected to the side of the inner sealing member 32 away from the vent valve port 514, and the second end of the second elastic member 34 abuts against the mounting seat 33. By providing the mounting seat 33, the overall structural stability and reliability of the inner valve core assembly 3 can be enhanced, and wear caused by the inner sealing member 32 contacting the second elastic member 34 can be avoided. At the same time, it can facilitate the better installation and positioning of the second elastic member 34 through the structure of the mounting seat 33 while simplifying the structure of the inner sealing member 32, thereby increasing the inner diameter of the second elastic member 34.

[0108] In one embodiment, the mounting base 33 includes a first positioning sleeve and a second positioning sleeve connected coaxially in sequence. The first positioning sleeve is fitted onto the end of the inner sealing member 32 away from the vent valve port 514. The outer diameter of the second positioning sleeve is smaller than the outer diameter of the first positioning sleeve. The second end of the second elastic member 34 is fitted onto the outside of the second positioning sleeve, and the second elastic member 34 abuts against the bottom of the first positioning sleeve. This structural arrangement of the mounting base 33 enhances the ease of connection between the mounting base 33 and the inner sealing member 32.

[0109] This embodiment also provides a gas-fired water heating device, including the aforementioned water-gas interlock valve. The gas-fired water heating device provided in this embodiment can reduce costs and improve the convenience of testing and maintenance.

[0110] Example 2

[0111] This embodiment provides a water-gas linkage valve and a gas-fired water heater including the water-gas linkage valve. The water-gas linkage valve provided in this embodiment has a basically the same structure as that in the above embodiments, with only some differences in the settings. This embodiment will not describe the structure that is the same as that in the above embodiments again.

[0112] like Figures 7 to 9As shown, in this embodiment, the solenoid valve 10 further includes a fixing seat 7 installed at one end of the solenoid module 1. The fixing seat 7 is sleeved on the outside of the outer valve core assembly 2 and connected to the valve port bracket 5. The end of the first elastic member 6 away from the outer sealing member 23 abuts against the fixing seat 7. This arrangement allows both the first elastic member 6 and the valve port bracket 5 to be connected to the fixing seat 7, rather than cooperating with the main sleeve 4, thereby simplifying the structure of the main sleeve 4 and reducing the processing difficulty of the main sleeve 4.

[0113] In this embodiment, the fixing base 7 is riveted to the magnetic plate 15. In other embodiments, the fixing base 7 and the magnetic plate 15 can also be fastened by snap-fit ​​or screw connection.

[0114] In this embodiment, the fixing seat 7 has an inner hole through which the outer valve core assembly 2 passes. The inner hole of the fixing seat 7 is folded to form a positioning protrusion 72. One end of the first elastic member 6 is sleeved on the outside of the positioning protrusion 72, which facilitates the installation and positioning of the first elastic member 6 on the fixing seat 7 and ensures the installation stability and reliability of the first elastic member 6.

[0115] The mounting base 7 includes a mounting plate 71, which is spaced out and sleeved on the outside of the outer valve core assembly 2 and connected to the electromagnetic module 1. Specifically, the mounting plate 71 is fitted against the side of the magnetic plate 15 facing the vent valve port 514. The inner hole of the mounting plate 71 is folded to form a positioning protrusion ring 72, and the mounting plate 71 abuts against the first end of the first elastic member 6.

[0116] In this embodiment, a mounting ring 73 is vertically connected to the outer periphery of the fixing plate 71. The first end of the valve port bracket 5 is inserted into the mounting ring 73 and abuts against the fixing plate 71. Multiple connecting hooks 74 are spaced circumferentially at one end of the mounting ring 73 away from the fixing plate 71. Multiple side vents 521 are spaced circumferentially along the valve port bracket 5, and the connecting hooks 74 hook onto the edge of the side vent 521. This improves the assembly stability and reliability of the fixing base 7 and the valve port bracket 5.

[0117] Furthermore, the mounting seal 60 is sandwiched between the magnetic plate 15 and the side wall of the mounting port, and the mounting seal 60 abuts against the outer side wall of the mounting ring portion 73.

[0118] In this embodiment, the magnetic guide plate 15 includes an inner magnetic guide plate 151 and an outer magnetic guide plate 152 that are stacked and separately arranged. The inner magnetic guide plate 151 is sandwiched between the outer magnetic guide plate 152 and the coil assembly 12. The end of the main sleeve 4 passes through the inner magnetic guide plate 151 and is confined between the outer magnetic guide plate 152 and the first valve shaft 21. This arrangement enables the main sleeve 4 to be installed and positioned by the cooperation between the magnetic guide plate 15 and the first valve shaft 21, preventing the main sleeve 4 from moving axially relative to the electromagnetic module 1, and improving the structural stability and reliability of the solenoid valve 10.

[0119] In this embodiment, the inner diameter of the main sleeve 4 is constant throughout, which effectively simplifies the structure of the main sleeve 4. The end of the main sleeve 4 away from the magnetic plate 15 abuts against the magnetic frame 14 to further restrict the movement of the main sleeve 4 relative to the electromagnetic module 1 in a direction away from the valve port frame 5. However, it is worth noting that in other embodiments, the mating structure between the main sleeve 4 and the electromagnetic module 1 can also adopt the structure in Embodiment 1.

[0120] Furthermore, a second sealing ring 82 is provided between the outer magnetic plate 152 and the inner magnetic plate 151, thereby preventing gas leakage through the connection between the outer magnetic plate 152 and the inner magnetic plate 151 and improving the safety of the solenoid valve 10. Furthermore, the second sealing ring 82 abuts against the outer wall of the main sleeve 4.

[0121] The inner hole of the outer magnetic plate 152 is folded to form an annular boss 1521. The annular boss 1521 and the inner magnetic plate 151 form a sealing ring groove 153. A second sealing ring 82 is disposed in the sealing ring groove 153. The second sealing ring 82 is interference-fitted onto the main sleeve 4 and abuts against both the inner magnetic plate 151 and the outer magnetic plate 152. By providing the annular boss 1521, the sealing ring groove 153 can be set through the cooperation between the main structure of the outer magnetic plate 152 and the inner magnetic plate 151, while the main structure of the outer magnetic plate 152 is in contact with the inner magnetic plate 151, thereby improving the ease of installation of the second sealing ring 82.

[0122] The annular boss 1521 and the first valve shaft 21 together form a limiting annular groove 1522, and the end of the main sleeve 4 is inserted into the limiting annular groove 1522. Thus, the installation of the main sleeve 4 can be limited by the cooperation between the limiting annular groove 1522 and the first valve shaft 21, thereby improving the structural integration.

[0123] Furthermore, the outer surface of the annular boss 1521 is tapered, with the larger end of the tapered surface facing the inner magnetic plate 151. This helps to avoid interference between the annular boss 1521 and the fixing seat 7, and also helps to improve the processing convenience of the outer magnetic plate 152.

[0124] Other structures of the water-air linkage valve can be set with reference to the above embodiments, and are not limited or described in detail here.

[0125] Example 3

[0126] This embodiment provides a water-gas linkage valve and a gas-fired water heater including the water-gas linkage valve. The basic structure of the water-gas linkage valve provided in this embodiment is the same as that in the above embodiments, with only some differences in the settings. This embodiment will not describe the structure that is the same as that in the above embodiments again.

[0127] like Figures 10 to 13As shown, the sealing end 51 is provided with an outer sealing ring 512 and an inner sealing ring 513 protruding in the direction toward the electromagnetic module 1. The outer sealing ring 512 is coaxial and spaced inside the inner sealing ring 513. The vent valve port 514 is located inside the inner sealing ring 513. The outer sealing member 23 can press against the outer sealing ring 512, and the inner sealing member 32 can press against the inner sealing ring 513.

[0128] By providing an inner sealing ring 513 and an outer sealing ring 512 on the sealing end 51 of the valve port bracket 5, the end faces of the inner sealing member 32 and the outer sealing member 23 can be flat, which simplifies the structure of the inner sealing member 32 and the outer sealing member 23 while ensuring the sealing effect on the vent valve port 514.

[0129] In this embodiment, the positioning protrusion 72 of the fixed seat 7 is fitted onto the protrusion 1521 of the outer magnetic plate 152, thereby improving the tightness of the fit between the fixed seat 7 and the outer magnetic plate 152, better ensuring the coaxiality between the fixed seat 7 and the electromagnetic module 1, and thus better ensuring the coaxiality between the valve port bracket 5 and the main sleeve 3, and improving the reliability of the solenoid valve 10.

[0130] In this embodiment, the second cylindrical portion includes a flared cylindrical portion and a cylindrical portion. The flared cylindrical portion is coaxially connected between the cylindrical portion and the first cylindrical portion. The diameter of the flared cylindrical portion gradually increases in the direction away from the first cylindrical portion, and the diameter of the cylindrical portion is equal to the maximum diameter of the flared cylindrical portion. This allows for an increase in the maximum outer diameter of the second cylindrical portion while improving the overall structural strength and stability of the mounting sleeve 22.

[0131] In this embodiment, the inner sealing member 32 includes a sealing main part and a connecting part coaxially connected. The connecting part is connected to the side of the sealing main part away from the vent valve port 514, and the outer diameter of the connecting part is smaller than the outer diameter of the sealing main part. The mounting base 33 includes a base plate part that fits against the end of the connecting part, a side plate part connected to the periphery of the base plate part, and a positioning flange part that folds outward along the edge of the side plate part. The side plate part is sleeved on the outside of the connecting part, and the positioning flange part is connected to the sealing main part. The end of the second elastic member 34 facing the vent valve port 514 abuts against the positioning flange part.

[0132] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0133] The specific embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A water-gas linkage valve, comprising a gas valve body (20) having a gas inlet passage (201) and a linkage valve body (301) having an outlet valve (3051), wherein the gas inlet passage (201) has an inlet valve (2014), a solenoid valve (10) for controlling the opening and closing of the inlet valve (2014) is provided at the gas valve body (20), and a valve core (304) for controlling the opening and closing of the outlet valve (3051) is provided inside the linkage valve body (301), wherein the valve core (304) is connected to a water pressure diaphragm (302) through a linkage shaft (303); Its features are, The solenoid valve (10) includes a solenoid module (1), an outer valve core assembly (2), and an inner valve core assembly (3). The solenoid module (1) is installed on the valve body (20). The first end of the outer valve core assembly (2) is slidably inserted into the solenoid module (1) and the second end has an outer sealing member (23). The inner valve core assembly (3) is coaxially arranged with the outer valve core assembly (2), and the first end of the inner valve core assembly (3) is slidably inserted into the outer valve core assembly (2) and the second end has an inner sealing member (32). The inner sealing element (32) and the outer sealing element (23) are both located in the gas intake passage (201). The solenoid valve (10) has a closed state in which the inner sealing element (32) and the outer sealing element (23) both block the intake valve port (2014), and the solenoid valve (10) has an open state in which the inner sealing element (32) and the outer sealing element (23) both open the intake valve port (2014). The valve core (304) has a sealing portion for sealing the outlet valve port (3051), the hardness of which is greater than the hardness of the inner sealing member (32) and the outer sealing member (23).

2. The water-gas linkage valve according to claim 1, characterized in that, The solenoid valve (10) includes a main sleeve (4) and a first elastic element (6). The first end of the main sleeve (4) is inserted into the solenoid module (1) and the second end extends out of the solenoid module (1). The outer valve core assembly (2) includes a first valve shaft (21) and a mounting sleeve (22) fixedly sleeved on the outside of the first valve shaft (21). The first end of the mounting sleeve (22) is slidably inserted into the main sleeve (4), and the second end of the mounting sleeve (22) extends out of the main sleeve (4) and is connected to the outer sealing member (23). The first elastic member (6) is sleeved on the mounting sleeve (22) and is used to apply an elastic force away from the electromagnetic module (1) to the outer sealing member (23). The inner valve core assembly (3) includes a second valve shaft (31) coaxially arranged with the first valve shaft (21). The first end of the second valve shaft (31) is slidably inserted into the mounting sleeve (22) and the second end is connected to the inner sealing member (32). A second elastic member (34) is sleeved on the second valve shaft (31). The second elastic member (34) applies an elastic force away from the electromagnetic module (1) to the inner sealing member (32).

3. The water-gas linkage valve according to claim 2, characterized in that, The second end of the main sleeve (4) is located outside the electromagnetic module (1) and is open. The second end of the main sleeve (4) is coaxially sleeved outside the fixed iron core (16) of the electromagnetic module (1). A first sealing ring (81) is provided between the main sleeve (4) and the fixed iron core (16).

4. The water-gas linkage valve according to claim 2, characterized in that, The gas intake passage (201) includes a first passage (2011), a valve mounting cavity (2012), and a second passage (2013) connected in sequence, and the connection between the valve mounting cavity (2012) and the second passage (2013) forms the intake valve port (2014); The solenoid valve (10) includes a valve holder (5) with a movable cavity. The first end of the valve holder (5) is fixedly installed on the solenoid module (1) and located in the valve mounting cavity (2012). The second end of the valve holder (5) is sealed to the bottom of the valve mounting cavity (2012). The second end of the valve holder (5) is provided with a vent valve (514) communicating with the air inlet valve (2014). The side of the valve holder (5) is provided with a side vent (521). The side vent (521) communicates with the first channel (2011) and the movable cavity. The solenoid module (1) is located outside the valve body (20), and the outer sealing member (23) and the inner sealing member (32) are movably disposed in the movable cavity. When the solenoid valve (10) is in the closed state, the inner sealing member (32) blocks the vent valve port (514), and the outer sealing member (23) blocks the periphery of the vent valve port (514). When the solenoid valve (10) is in the open state, both the inner sealing member (32) and the outer sealing member (23) are separated from the valve holder (5) to connect the movable cavity with the vent valve port (514).

5. The water-gas linkage valve according to claim 4, characterized in that, The main sleeve (4) includes a main sleeve (41) inserted inside the electromagnetic module (1) and a fixed sleeve connected to one end of the main sleeve (41). The first valve shaft (21) is slidably inserted into the main sleeve (41). The fixed sleeve is located outside the electromagnetic module (1) and connected to the valve holder (5). The end of the first elastic member (6) away from the outer sealing member (23) abuts against the fixed sleeve. Alternatively, the main sleeve (4) is inserted into the electromagnetic module (1), and the electromagnetic valve (10) further includes a fixed seat (7) installed at one end of the electromagnetic module (1). The fixed seat (7) is sleeved on the outside of the outer valve core assembly (2) and connected to the valve port frame (5). The end of the first elastic member (6) away from the outer sealing member (23) abuts against the fixed seat (7).

6. The water-gas linkage valve according to claim 5, characterized in that, The electromagnetic module (1) includes a coil assembly (12), a magnetic guide frame (14), and a magnetic guide plate (15). The magnetic guide frame (14) is U-shaped and one end is connected to the end of the coil assembly (12) away from the valve holder (5). The magnetic guide plate (15) is located at the other end of the coil assembly (12) and is connected to the two sides of the magnetic guide frame (14). The outer valve core assembly (2) passes through the magnetic guide plate (15). The magnetic guide plate (15) includes an inner magnetic guide plate (151) and an outer magnetic guide plate (152) that are stacked and separately arranged. The inner magnetic guide plate (151) is sandwiched between the outer magnetic guide plate (152) and the coil assembly (12). The end of the main sleeve (4) passes through the inner magnetic guide plate (151) and is confined between the outer magnetic guide plate (152) and the first valve shaft (21).

7. The water-gas linkage valve according to claim 6, characterized in that, The inner hole of the outer magnetic plate (152) is folded to form an annular boss (1521), and the annular boss (1521) and the first valve shaft (21) together form a limiting annular groove (1522), and the end of the main sleeve (4) is inserted into the limiting annular groove (1522). And / or, the inner hole of the outer magnetic plate (152) is folded to form an annular boss (1521), the annular boss (1521) and the inner magnetic plate (151) surround to form a sealing ring groove (153), a second sealing ring (82) is provided in the sealing ring groove (153), the second sealing ring (82) is interference-fitted on the main sleeve (4) and abuts against both the inner magnetic plate (151) and the outer magnetic plate (152).

8. The water-gas linkage valve according to claim 5, characterized in that, The inner hole of the fixed seat (7) is folded to form a positioning protrusion (72), and one end of the first elastic member (6) is sleeved on the outside of the positioning protrusion (72). And / or, the fixing base (7) includes a fixing plate (71) and a mounting ring (73) connected to the outer edge of the fixing plate (71). The fixing plate (71) is connected to the electromagnetic module (1). The mounting ring (73) has a plurality of connecting hooks (74) spaced circumferentially at one end away from the fixing plate (71). The first end of the valve port bracket (5) is inserted into the mounting ring (73) and abuts against the fixing plate (71). The side vent (521) has a plurality of connections spaced circumferentially along the valve port bracket (5). The connecting hooks (74) are hooked to the edge of the side vent (521).

9. The water-gas linkage valve according to claim 4, characterized in that, The valve holder (5) includes a sealing end (51) and a side plate (52) connected to the periphery of the sealing end (51). The side plate (52) has the side vent (521). The sealing end (51) has an outer sealing ring (512) and an inner sealing ring (513) protruding in the direction toward the electromagnetic module (1). The inner sealing ring (513) surrounds the vent valve (514). The outer sealing ring (512) is coaxial and spaced around the outer side of the inner sealing ring (513). When the electromagnetic valve (10) is in the closed state, the outer sealing member (23) abuts against the outer sealing ring (512), and the inner sealing member (32) abuts against the inner sealing ring (513). And / or, the valve holder (5) includes a sealing end (51) and a side plate portion (52) connected to the periphery of the sealing end (51). The side plate portion (52) has the side vent (521). The sealing end (51) is recessed in a direction away from the electromagnetic module (1) to form a central recess (511). The vent valve port (514) is opened in the central recess (511). A valve port seal (50) is provided between the valve holder (5) and the valve mounting cavity (2012). The valve port seal (50) surrounds the outside of the central recess (511).

10. A gas-fired hot water device, characterized in that, Includes the water-air linkage valve as described in any one of claims 1-9.

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