Electromagnetic valve, valve device and gas water heating equipment

Abstract

The utility model belongs to the technical field of valves, and particularly discloses an electromagnetic valve, a valve device and gas water heating equipment. The electromagnetic valve comprises an electromagnetic mechanism, a main sleeve, a valve port frame, a valve element mechanism and a main elastic piece. The valve port frame is connected to the main sleeve, the valve port frame and the main sleeve define a containing space with a lateral opening, and a valve port coaxial with the main sleeve is formed in the end, away from the main sleeve, of the valve port frame. The first end of the valve element mechanism is inserted into the inner cavity of the main sleeve in a sliding mode, the second end of the valve element mechanism is provided with a sealing cap, and the sealing cap is located in the containing space and can open or block the valve port so that the valve element mechanism can be switched between the open state that the valve port communicates with the lateral opening and the closed state that the sealing cap closes the valve port. According to the utility model, the detection and maintenance convenience of the electromagnetic valve and the valve device can be improved, the processing and maintenance cost of the electromagnetic valve and the valve device is reduced, and the cost of gas water heating equipment is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a valve technical field especially relates to a kind of solenoid valve, valve device and gas water heating equipment. BACKGROUND

[0002] Valve is a kind of device for controlling the fluid on-off in pipeline, it is widely used in gas water heater, wall-hanging stove and various types of gas hot water equipment, is one of the key to the safe and reliable operation of gas hot water equipment.

[0003] Valve device applied to gas pipeline passes through including valve seat and solenoid valve, valve seat is set up with the valve cavity of valve port;Solenoid valve includes electromagnetic mechanism, valve core subassembly and elastic piece, electromagnetic mechanism is installed on valve seat and has center through-hole, valve core subassembly includes valve rod and the plugging head of setting at the end of valve rod, valve rod is installed in center through-hole along its axial sliding, to make plugging head close to or away from valve port.When electromagnetic mechanism is powered, valve core subassembly moves in the direction away from valve port to open valve port;When electromagnetic mechanism is powered off, valve core subassembly moves in the direction close to valve port under the restoring force of elastic piece to close valve port.

[0004] The valve device provided by prior art, the cooperation of plugging head and valve port determines the gas tightness of solenoid valve when closing, to ensure the normal use of valve device, valve device will be carried out gas tightness detection before leaving factory, to detect whether the cooperation of plugging head and valve port is reliable.Due to the valve port and plugging head are respectively arranged on solenoid valve and valve seat, valve seat and plugging head need to be assembled every time when detecting, and when detecting is unqualified, the structure of plugging head or valve seat needs to be modified or even reprocessed, resulting in higher processing and detection cost of valve device and lower efficiency, and being not conducive to the maintenance and replacement of valve device. UTILITY MODEL CONTENTS

[0005] One of the technical problems solved by the utility model is to provide a solenoid valve, which can effectively solve the problem of high processing and detection cost of existing solenoid valve, and improve the detection convenience of solenoid valve.

[0006] The second technical problem solved by the utility model is to provide a valve device, which can effectively solve the problem of high processing and detection cost of existing valve device, and improve the detection convenience of solenoid valve.

[0007] The third technical problem solved by the utility model is to provide a gas hot water equipment, which can effectively solve the problem of high maintenance and replacement cost of gas hot water equipment caused by high detection and replacement cost of existing valve device.

[0008] The first technical problem is solved by the following technical scheme:

[0009] A solenoid valve, comprising:

[0010] An electromagnetic mechanism having a central through hole;

[0011] A main sleeve having one end closed and the other end open, the closed end of the main sleeve being inserted into the central through hole;

[0012] A valve port frame connected to the main sleeve and surrounding the main sleeve to form a containing space having a lateral opening, the valve port frame being provided with a valve port coaxial with the main sleeve at an end away from the main sleeve;

[0013] A valve core mechanism having a first end slidingly inserted into the inner cavity of the main sleeve and a second end having a sealing cap, the sealing cap being located in the containing space and capable of opening or closing the valve port, so that the valve core mechanism switches between an open state in which the valve port communicates with the lateral opening and a closed state in which the sealing cap closes the valve port;

[0014] A main elastic member acting on the valve core mechanism;

[0015] The electromagnetic mechanism drives the valve core mechanism to move axially when energized, so that the valve core mechanism switches to a first state, and the main elastic member applies an elastic force to the valve core mechanism to keep or restore the valve core mechanism to a second state, one of the first state and the second state being the open state and the other being the closed state.

[0016] Compared with the background art, the electromagnetic valve has the beneficial effects that: since the valve port frame is provided on the electromagnetic valve, the valve port frame has a valve port coaxial with the inner cavity of the main sleeve, and the valve port frame is connected to the main sleeve, so that when the electromagnetic valve is applied to a valve device, the opening and closing of the valve port on the valve port frame by the valve core mechanism can realize the opening and closing of the airflow passage on the valve seat, the main sleeve, the valve port frame and the valve core mechanism can be assembled together to form an independent module, the module can be detected for air tightness, so that the electromagnetic valve can be separated from the valve seat for cooperation detection of the valve port and the sealing cap, without the need to assemble the electromagnetic valve to the valve seat during detection, improving the detection efficiency and convenience of the electromagnetic valve; at the same time, since the valve port is provided on the valve port frame, when the electromagnetic valve is not suitable for detection, the electromagnetic valve can be updated by repairing or reprocessing the valve port frame, which is relatively low in cost compared with the valve seat, and during later maintenance, the corresponding module of the electromagnetic valve can be replaced individually without the need to remove the valve seat, facilitating repair, thereby effectively reducing the processing and repair costs of the electromagnetic valve.

[0017] In one of the embodiments, the main sleeve comprises a mounting cylinder portion coaxially connected with a positioning cylinder portion, the mounting cylinder portion is inserted into the center through hole, the first end of the valve core mechanism is slidably inserted into the mounting cylinder portion, the positioning cylinder portion is located outside the electromagnetic mechanism and has an outer diameter larger than that of the mounting cylinder portion, and the valve port frame is in a sleeving fit with the positioning cylinder portion at the end away from the valve port;

[0018] And / or, an axial positioning structure is arranged between the main sleeve and the valve port frame, which limits the axial movement of the valve port frame relative to the main sleeve.

[0019] In one of the embodiments, the axial positioning structure comprises a hook portion arranged at the end of the positioning cylinder portion away from the mounting cylinder portion, and the hook portion is hooked with the side edge of the side opening facing the electromagnetic mechanism;

[0020] And / or, the first end of the valve port frame is inserted into the inside of the positioning cylinder portion, and the end face of the valve port frame facing the electromagnetic mechanism is in abutment with the cylinder bottom of the positioning cylinder portion.

[0021] In one of the embodiments, a plurality of side openings are arranged at intervals along the circumference of the valve port frame, and the side openings are arranged one by one corresponding to the hook portions.

[0022] In one of the embodiments, the valve port frame is a cylindrical structure, the first end of the cylindrical structure is coaxially inserted into the positioning cylinder portion, the second end face of the cylindrical structure is provided with the valve port, and the side wall of the cylindrical structure is provided with the side opening.

[0023] In one of the embodiments, the valve port frame is integrally formed; and / or, the valve port frame is riveted with the main sleeve.

[0024] In one of the embodiments, the valve port frame has an inner sealing surface surrounding the outside of the valve port and an outer sealing surface surrounding the outside of the inner sealing surface.

[0025] The valve core mechanism comprises a first valve core assembly, a second valve core assembly and an auxiliary elastic member, the first end of the first valve core assembly is slidably mounted in the main sleeve and the second end has an outer blocking head, the first end of the second valve core assembly is slidably mounted in the first valve core assembly and the second end has an inner blocking head, the inner blocking head cooperates with the inner sealing surface to block the valve port, the outer blocking head cooperates with the outer sealing surface, and the sealing cap comprises the inner blocking head and the outer blocking head.

[0026] The main elastic member is connected between the first valve core assembly and the main sleeve and applies an action force to the first valve core assembly towards the valve port, and the auxiliary elastic member is arranged between the first valve core assembly and the second valve core assembly and applies an elastic force to the second valve core assembly towards the valve port.

[0027] In one of the embodiments, the valve port frame has a valve plate part arranged opposite and spaced apart from the main sleeve, the valve plate part is recessed to form a recess part in a direction away from the electromagnetic mechanism, the bottom of the recess part is provided with the valve port, the bottom surface of the recess part has the inner sealing surface, and the valve plate part has the outer sealing surface arranged around the outside of the recess part.

[0028] In one of the embodiments, the bottom of the recess part is convexly formed with a circular-arc convex part in a direction towards the electromagnetic mechanism, the circular-arc convex part is arranged around the valve port, and the convex surface of the circular-arc convex part forms the inner sealing surface.

[0029] In one of the embodiments, the first valve core assembly further includes a first valve shaft and a sliding sleeve, the first end of the sliding sleeve is connected to the second end of the first valve shaft, and the second end of the sliding sleeve is connected with the outer blocking head.

[0030] The second valve core assembly includes a second valve shaft, the second valve shaft is slidingly inserted into the sliding sleeve, and the inner blocking head is installed on one end of the second valve shaft close to the valve port.

[0031] In one of the embodiments, both ends of the sliding sleeve are open, and the first end of the sliding sleeve is sleeved on the outside of the first valve shaft.

[0032] Alternatively, the first end of the sliding sleeve is closed and the second end is open, the second end of the first valve shaft is provided with a mounting groove, the first end of the sliding sleeve is inserted into the mounting groove, and the inner diameter of the second end of the sliding sleeve is greater than the inner diameter of the first end of the sliding sleeve.

[0033] And / or, the auxiliary elastic member is sleeved on the outside of the second valve shaft, and both ends of the auxiliary elastic member abut against the sliding sleeve and the inner blocking head, respectively.

[0034] The second technical problem is solved by the following technical scheme:

[0035] A valve device includes:

[0036] A valve seat has a gas inlet channel, a valve chamber and a gas outlet channel which are sequentially communicated, the valve chamber and the gas inlet channel are communicated through a vent hole, and the valve chamber on a side away from the vent hole penetrates through the valve seat and forms a mounting port.

[0037] The electromagnetic valve as above, the seal is mounted at the mounting port, the valve port frame and the seal cap are located in the valve cavity and the lateral opening is communicated with the gas outlet channel, the end of the valve port frame away from the electromagnetic mechanism is sealed with the cavity wall of the valve cavity, and the air hole is communicated with the valve port.

[0038] Compared with the background art, the valve device has the beneficial effects that: since the valve port is arranged on the valve port frame of the electromagnetic valve, the air hole on the valve seat only functions to connect the valve cavity and the gas inlet channel, and no longer functions to realize gas on-off control in cooperation with the electromagnetic valve, so that the machining precision requirement of the valve seat can be reduced; when the valve device is not suitable for testing, the structure of the valve seat basically does not need to be greatly changed, and the corresponding module of the electromagnetic valve can be individually replaced or repaired, so that the machining and testing difficulty of the valve device is effectively reduced, and the testing and replacement convenience of the valve device is improved.

[0039] In one embodiment, a first sealing ring is arranged between the valve port frame and the cavity wall of the valve cavity, and surrounds the outside of the valve port and the air hole;

[0040] And / or, a second sealing ring is arranged between the main sleeve and the cavity wall of the valve cavity, and the lateral opening and the gas outlet channel are located between the second sealing ring and the valve port.

[0041] The third technical problem is solved by the following technical scheme:

[0042] A gas hot water equipment comprises the valve device as above.

[0043] Compared with the background art, the gas hot water equipment has the beneficial effects that: by adopting the valve device, the cost can be reduced, and the testing and maintenance convenience can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0044] Figure 1 The valve device provided by the embodiment of the present application is a sectional view in a valve closing state;

[0045] Figure 2 The valve device provided by the embodiment of the present application is a sectional view in a valve opening state;

[0046] Figure 3 The structure schematic view of the electromagnetic valve provided by the embodiment of the present application;

[0047] Figure 4 The split structure schematic view of the electromagnetic valve provided by the embodiment of the present application;

[0048] Figure 5The utility model provides a sectional view of electromagnetic valve of an embodiment of the utility model provides a structure diagram of valve port frame of an embodiment of the utility model provides a sectional view of electromagnetic valve of another embodiment of the utility model.

[0049] Figure 6 The utility model provides a structure diagram of valve port frame of an embodiment of the utility model provides a structure diagram of valve port frame of an embodiment of the utility model provides a sectional view of electromagnetic valve of another embodiment of the utility model.

[0050] Figure 7 The utility model provides a sectional view of electromagnetic valve of an embodiment of the utility model provides a structure diagram of valve port frame of an embodiment of the utility model provides a sectional view of electromagnetic valve of another embodiment of the utility model.

[0051] Label explanation:

[0052] 100, electromagnetic valve, 200, valve seat, 201, air inlet channel, 202, valve cavity, 203, air outlet channel, 204, air hole, 300, first sealing ring, 400, second sealing ring,

[0053] 1, electromagnetic mechanism, 11, coil assembly, 111, coil support, 112, coil, 113, plastic package shell, 12, fixed iron core, 13, magnetism guide assembly, 131, magnetism guide frame, 132, magnetism guide plate,

[0054] 2, main sleeve, 21, installation cylinder portion, 22, positioning cylinder portion, 221, bulge portion, 23, hook portion,

[0055] 3, valve port frame, 31, valve plate portion, 311, recessed portion, 312, circular arc convex portion, 313, valve port, 32, surrounding wall portion, 321, lateral opening,

[0056] 4, valve core mechanism, 41, first valve core assembly, 411, first valve shaft, 4111, installation groove, 412, sliding sleeve, 4121, main cylinder portion, 4122, flared cylinder portion, 4123, connecting ring portion, 4124, plug-in cylinder portion, 413, outer plugging head, 4131, sealing ring portion, 414, sealing element, 42, second valve core assembly, 421, second valve shaft, 4211, first sliding shaft portion, 4212, second sliding shaft portion, 4213, connecting shaft portion, 422, inner plugging head, 43, auxiliary elastic element,

[0057] 5, main elastic element. DETAILED DESCRIPTION

[0058] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative labor fall within the protection scope of the application.

[0059] In the description of the present application, it needs to be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0060] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0061] In the description of the present application, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0062] Embodiment one

[0063] The present embodiment provides a valve device, and the valve device provided by the present embodiment can be applied to a gas water heater or other pipeline for realizing the on-off of fluid, so as to improve the detection and replacement convenience of the valve device, and improve the use experience of the valve device while realizing the on-off of fluid in the pipeline.

[0064] As shown in Figure 1 and Figure 2 In the present embodiment, the valve device includes a valve seat 200 and an electromagnetic valve 100. The valve seat 200 has an air inlet channel 201, a valve cavity 202 and an air outlet channel 203 in sequence, the air inlet channel 201 and the valve cavity 202 are communicated through an air hole 204, and the side of the valve cavity 202 away from the valve port 313 penetrates the valve seat 200 to form a mounting port; the electromagnetic valve 100 is sealingly mounted on the valve seat 200 through the mounting port, and the electromagnetic valve 100 is used to control the on-off of the valve port 313, thereby realizing the on-off control of the air inlet channel 201 and the air outlet channel 203.

[0065] In the embodiment, the electromagnetic valve 100 comprises an electromagnetic mechanism 1, a main sleeve 2, a valve core mechanism 4 and a valve port frame 3. The electromagnetic mechanism 1 has a central through hole, the main sleeve 2 is open at one end and closed at the other end, and the closed end of the main sleeve 2 is inserted into the central through hole; the valve port frame 3 is connected to the main sleeve 2 and surrounds the main sleeve 2 to form an accommodating space with a lateral opening 321, and the valve port frame 3 is open at an end away from the main sleeve 2 and has a valve port 313 coaxial with the main sleeve 2; the valve core mechanism 4 is slidably inserted into the inner cavity of the main sleeve 2 at a first end and has a sealing cap at a second end, the sealing cap is located in the accommodating space and can open or block the valve port 313, so that the valve core mechanism 4 switches between an open state in which the valve port 313 is communicated with the lateral opening 321 and a closed state in which the sealing cap closes the valve port 313; and a main elastic member 5 acts on the valve core mechanism 4.

[0066] The electromagnetic mechanism 1 drives the valve core mechanism 4 to move axially when energized, so that the valve core mechanism 4 switches to the first state, and the main elastic member 5 is used to apply an elastic force to the valve core mechanism 4 to keep or restore the valve core mechanism 4 to the second state, one of the first state and the second state is the open state, and the other is the closed state.

[0067] The valve port frame 3 and the sealing cap are located in the valve cavity 202 and the lateral opening 321 is communicated with the gas outlet passage 203, the end of the valve port frame 3 away from the electromagnetic mechanism 1 is in sealing cooperation with the cavity wall of the valve cavity 202, and the air hole 204 is communicated with the valve port 313 in opposition.

[0068] When the valve core mechanism 4 is in the open state, the air inlet passage 201, the air hole 204, the valve port 313, the mounting space, the lateral opening 321 and the gas outlet passage 203 are sequentially communicated, so that the valve device is in the open valve state; when the valve core mechanism 4 is in the closed state, the communication between the lateral opening 321 and the valve port 313 is blocked, that is, the air inlet passage 201 and the gas outlet passage 203 are not communicated.

[0069] The electromagnetic valve 100 provided by the embodiment is provided with the valve port frame 3, the valve port frame 3 is coaxially communicated with the inner cavity of the main sleeve 2 and has the valve port 313, and the valve port frame 3 is connected with the main sleeve 2, so that when the electromagnetic valve 100 is applied to the valve device, the opening and closing of the valve port 313 on the valve port frame 3 by the valve core mechanism 4 can realize the passage control of the airflow passage on the valve seat 200, the main sleeve 2, the valve port frame 3 and the valve core mechanism 4 can be assembled together to form an independent module, and the module is subjected to the air tightness detection, so that the electromagnetic valve 100 can be separated from the valve seat 200 to perform the cooperation detection of the valve port 313 and the sealing cap, without the need of assembling the electromagnetic valve 100 to the valve seat 200 during the detection, so that the detection efficiency and the detection convenience of the electromagnetic valve 100 are improved; meanwhile, since the valve port 313 is arranged on the valve port frame 3, when the electromagnetic valve 100 is not suitable for detection, the electromagnetic valve 100 can be renewed by repairing or reprocessing the valve port frame 3, compared with reprocessing or repairing the valve seat 200, the cost is lower, and during the later maintenance, the corresponding module of the electromagnetic valve 100 can be replaced alone, without the need of removing the valve seat 200, so that the repair is convenient, and the machining and repair costs of the electromagnetic valve 100 are effectively reduced.

[0070] The valve device provided by the embodiment is provided with the valve port 313 arranged on the valve port frame 3 of the electromagnetic valve 100, so that the air hole 204 on the valve seat 200 only plays a role of connecting the valve cavity 202 and the air inlet passage 201, and no longer plays a role of precisely cooperating with the electromagnetic valve 100 to realize the gas on-off control, so that the machining precision requirement of the valve seat 200 can be reduced, and when the valve device is not suitable for testing, the structure of the valve seat 200 basically does not need to be greatly changed, the machining and detection difficulty of the valve device is effectively reduced, the production efficiency of the valve device is improved, and the detection and replacement convenience of the valve device is improved.

[0071] In an embodiment, the first state is an open state, and the second state is a closed state, that is, the valve device is an open valve. In other embodiments, the first state is a closed state, and the second state is an open state, that is, the valve device is a normally open valve.

[0072] To ensure the sealing, in an embodiment, a first sealing ring 300 is arranged between the valve port frame 3 and the cavity wall of the valve cavity 202, and surrounds the outside of the valve port 313 and the air hole 204; and / or, a second sealing ring 400 is arranged between the main sleeve 2 and the cavity wall of the valve cavity 202, and the lateral opening 321 and the air outlet passage 203 are located between the second sealing ring 400 and the valve port 313.

[0073] As Figure 5As shown, the electromagnetic mechanism 1 comprises a coil assembly 11, a fixed iron core 12 and a magnetic conducting assembly 13. The coil assembly 11 comprises a coil support 111 with a central through hole, a coil 112 mounted on the coil support 111, and a plastic sealing shell 113 wrapped outside the coil 112, and the fixed iron core 12 is mounted at the end of the central through hole away from the valve port 313. The magnetic conducting assembly 13 comprises a magnetic conducting frame 131 and a magnetic conducting plate 132, the magnetic conducting frame 131 comprises a top plate part and a side plate part connected vertically, the top plate part is connected to the end of the coil support 111 towards the valve port 313, and the side plate part is located outside the coil assembly 11, and the magnetic conducting plate 132 is mounted at the end of the coil assembly 11 away from the top plate part and connected with the side plate part, so that the coil assembly 11 is located between the magnetic conducting frame 131 and the magnetic conducting plate 132. The fixed iron core 12 is mounted at the end of the magnetic conducting plate 132 away from the valve port 313. When the coil 112 is energized, the coil 112 cooperates with the fixed iron core 12 to generate an electromagnetic force, which acts on the valve core mechanism 4 to drive the valve core mechanism 4 to move axially. It is worth noting that the electromagnetic mechanism 1 can adopt the structure in the prior art, which is not the focus of the present application, and the specific structure of the electromagnetic mechanism 1 is not limited and described in detail.

[0074] As shown in the drawings, Figures 3 to 6 In order to improve the assembly efficiency and assembly accuracy of the main sleeve 2 and the valve port frame 3, in an embodiment, the main sleeve 2 comprises a mounting cylinder part 21 and a positioning cylinder part 22 connected coaxially, the mounting cylinder part 21 is inserted into the central through hole, the positioning cylinder part 22 is located on the side of the electromagnetic mechanism 1 towards the valve port 313 and is open towards the valve port 313, and the outer diameter of the positioning cylinder part 22 is larger than that of the mounting cylinder part 21; the first end of the valve port frame 3 is coaxially inserted and assembled with the positioning cylinder part 22, so that the coaxiality of the positioning cylinder part 22 and the valve port frame 3 can be ensured through the inserted assembly of the valve port frame 3 and the positioning cylinder part 22, thereby ensuring the coaxiality of the inner cavity of the main sleeve 2 and the valve port 313; at the same time, the inserted assembly of the positioning cylinder part 22 and the valve port frame 3 can provide positioning for the assembly of the two, thereby improving the disassembly and assembly efficiency of the electromagnetic valve 100; at the same time, the outer diameter of the positioning cylinder part 22 is larger than that of the mounting cylinder part 21, which can also avoid the interference between the valve port frame 3 and the valve core mechanism 4.

[0075] In other embodiments, other positioning structures can be used for positioning between the valve port frame 3 and the main sleeve 2, for example, one of the main sleeve 2 and the valve port frame 3 is provided with a positioning protrusion, and the other is provided with a positioning hole, and the positioning protrusion is inserted into the positioning hole.

[0076] The side of the fixed iron core 12 towards the valve port 313 is provided with a positioning recess, and the closed end of the mounting cylinder part 21 is inserted into the positioning recess, so as to realize the installation and positioning of the main sleeve 2 and the fixed iron core 12, and improve the assembly accuracy and assembly efficiency.

[0077] In an embodiment, the valve port frame 3 is in a cylindrical structure, the first end of the cylindrical structure is in a plug-in fit with the positioning cylinder portion 22, the other end of the cylindrical structure is provided with a valve port 313, and the side wall of the cylindrical structure is provided with a lateral opening 321. The cylindrical structure is coaxially arranged with the main sleeve 2, so as to better ensure the coaxiality of the valve port frame 3 and the main sleeve 2; at the same time, the valve port frame 3 is in a cylindrical structure, which is conducive to ensuring the overall structural strength and rigidity of the valve port frame 3. In other embodiments, the valve port frame 3 can also be in a U-shaped structure, one side of the U-shaped structure is connected with the main sleeve 2, and the valve port 313 is provided on the other opposite side of the U-shaped structure.

[0078] In order to simplify the structure of the valve port frame 3, the first end of the valve port frame 3 is open, so as to facilitate the valve core mechanism 4 to pass through. Specifically, the valve port frame 3 comprises a valve plate portion 31 and a surrounding wall portion 32 surrounding the periphery of the valve plate portion 31, the valve plate portion 31 is arranged opposite and spaced apart from the main sleeve 2, and the surrounding wall portion 32 is provided with a lateral opening 321.

[0079] In an embodiment, the lateral openings 321 are arranged in plurality along the circumference of the valve port frame 3, thereby being able to reduce the requirement for the alignment accuracy of the electromagnetic valve 100 and the valve seat 200 in the circumferential direction, and ensuring that the lateral outlet can always be in communication with the gas outlet passage 203.

[0080] In an embodiment, an axial limiting structure is arranged between the valve port frame 3 and the main sleeve 2, which limits the axial movement of the valve port frame 3 relative to the main sleeve 2, so as to ensure that the distance between the valve port 313 and the end of the electromagnetic mechanism 1 can be kept stable, and the assembly reliability of the electromagnetic valve 100 on the valve seat 200 is ensured.

[0081] In an embodiment, the axial positioning structure comprises a hook portion 23 arranged at the open end of the positioning cylinder portion 22, and the hook portion 23 is hooked with the side edge of the lateral opening 321 facing the electromagnetic mechanism 1, so that the movement of the valve port 313 plate in the direction away from the electromagnetic mechanism 1 can be limited by the cooperation of the hook portion 23 and the edge of the lateral opening 321.

[0082] In order to simplify the cooperation between the main sleeve 2 and the valve port frame 3, in an embodiment, the first end of the valve port frame 3 is inserted into the positioning cylinder portion 22, so as to facilitate the formation of the hook portion 23 by bending the open edge of the positioning cylinder portion 22 after the valve port frame 3 is inserted into the positioning cylinder portion 22, thereby improving the assembly and disassembly convenience of the main sleeve 2 and the valve port frame 3, and facilitating the hooking of the hook portion 23 with the edge of the lateral opening 321. In other embodiments, the positioning cylinder portion 22 can also be inserted into the interior of the valve port frame 3.

[0083] The lateral openings 321 are arranged in plurality along the circumference of the valve port frame 3, and the hook portions 23 are arranged in one-to-one correspondence with the lateral openings 321, so as to ensure the force stability and force balance of the valve port frame 3 as a whole. In other embodiments, the lateral openings 321 can also be provided in only one.

[0084] In an embodiment, the first end of the valve port frame 3 abuts against the bottom of the positioning cylinder portion 22 to limit the movement of the valve port frame 3 relative to the main sleeve 2 in the direction towards the electromagnetic mechanism 1, so that the movement of the valve port frame 3 in the axial direction is effectively limited.

[0085] However, it can be understood that the valve port frame 3 and the positioning cylinder portion 22 can also be positioned by other axial positioning structures, for example, one of the valve port frame 3 and the positioning cylinder portion 22 is provided with positioning holes, and the other is provided with positioning protrusions, the positioning protrusions are spaced apart in the circumferential direction of the valve port frame 3, and the positioning holes and the positioning protrusions are one-to-one corresponding and the positioning protrusions are inserted into the positioning holes.

[0086] In order to reduce the processing difficulty of the valve port frame 3, in an embodiment, the valve port frame 3 is integrally formed, thereby improving the overall structural strength and rigidity of the valve port frame 3 and reducing the processing difficulty.

[0087] In an embodiment, the valve port frame 3 is riveted with the main sleeve 2, thereby avoiding the increase of parts caused by screw connection, and effectively improving the connection stability and reliability of the valve port frame 3 and the main sleeve 2. In another embodiment, an internal thread can be provided on the inner wall of the positioning cylinder portion 22, and an external thread is provided on the outer side of the first end of the valve port frame 3, and the valve port frame 3 is screwed with the positioning cylinder portion 22. In another embodiment, the valve port frame 3 and the positioning cylinder portion 22 can also be welded or connected by detachable connection modes such as clamping and screw connection.

[0088] As shown in FIGS. Figure 1 , Figure 2 and Figure 5 In an embodiment, the second sealing ring 400 is pressed between the outer side wall of the positioning cylinder portion 22 and the side wall of the valve cavity 202. In another embodiment, the second sealing ring 400 can also be pressed between the end face of the electromagnetic mechanism 1 and the end face where the mounting port is located.

[0089] To improve the sealing reliability of the valve core mechanism 4 to the valve port 313, in an embodiment, the valve port frame 3 has an inner sealing surface surrounding the outer side of the valve port 313 and an outer sealing surface surrounding the outer side of the inner sealing surface. The valve core mechanism 4 includes a first valve core assembly 41, a second valve core assembly 42, and an auxiliary elastic member 43. The first valve core assembly 41 is slidably installed in the inner part of the main sleeve 2 and has an outer blocking head 413 at the second end. The first valve core assembly 41 is slidably installed in the inner part of the first valve core assembly 41 and has an inner blocking head 422 capable of extending out of the outer blocking head 413. The inner blocking head 422 cooperates with the inner sealing surface to block the valve port 313, and the outer blocking head 413 cooperates with the outer sealing surface to block the valve port 313. The main elastic member 5 acts on the first valve core assembly 41 to apply an elastic force to the entire valve core mechanism 4 in the direction of the valve port 313. The auxiliary elastic member 43 acts on the second valve core assembly 42 to apply an elastic force to the second valve core assembly 42 in the direction of the valve port 313.

[0090] When the electromagnetic mechanism 1 is not energized, the outer blocking head 413 of the first valve core assembly 41 is kept in contact with the outer sealing surface under the action of the main elastic member 5, and the inner blocking head 422 of the second valve core assembly 42 is kept in close contact with the inner sealing surface under the action of the auxiliary elastic member 43 and the first valve core assembly 41. Thus, the inner blocking head 422 and the outer blocking head 413 cooperate to form two seals for the valve port 313, effectively reducing the probability of leakage at the valve port 313 and improving the safety and reliability of the electromagnetic valve 100 and the valve device. After the electromagnetic mechanism 1 is energized, the first valve core assembly 41 and the second valve core assembly 42 are moved away from the valve port 313 under the action of the magnetic force applied by the electromagnetic mechanism 1, so that the outer blocking head 413 is separated from the outer sealing surface, and the inner blocking head 422 is separated from the inner sealing surface, thereby making the valve port 313 communicate with the lateral opening 321 and realizing the opening of the valve port 313.

[0091] That is, when the valve core mechanism 4 is in the open state, the outer blocking head 413 and the inner blocking head 422 are separated from the valve port frame 3, and when the valve core mechanism 4 is in the closed state, the outer blocking head 413 is in contact with the outer sealing surface for sealing, and the inner blocking head 422 is in contact with the inner sealing ring for sealing.

[0092] In an embodiment, the first valve core assembly 41 further comprises a first valve shaft 411 and a sliding sleeve 412, the first end of the first valve shaft 411 is slidingly inserted into the main sleeve 2, one end of the sliding sleeve 412 is coaxially connected to the second end of the first valve shaft 411, and the second end of the sliding sleeve 412 is coaxially connected with the outer plug 413. The second valve core assembly 42 comprises a second valve shaft 421, the second valve shaft 421 is slidingly inserted into the inside of the sliding sleeve 412, and the inner plug 422 is installed at the end of the second valve shaft 421 away from the first valve shaft 411. By providing the sliding sleeve 412, it is beneficial to realize the sliding guidance of the second valve core assembly 42, ensure the operation reliability of the second valve core assembly 42, and at the same time, the length of the first valve shaft 411 and the sliding sleeve 412 can be shortened, the machining difficulty of the first valve shaft 411 and the sliding sleeve 412 is reduced, and thus the machining cost is reduced.

[0093] In an embodiment, both ends of the sliding sleeve 412 are open, the first end of the sliding sleeve 412 is sleeved on the outside of the first valve shaft 411, the second end of the main sleeve 2 is connected with the outer plug 413, and the inner diameter of the first end of the sliding sleeve 412 is smaller than the inner diameter of the second end of the sliding sleeve 412, thereby it is beneficial to increase the outer diameter of the second end of the sliding sleeve 412 on the basis of keeping the diameter of the first valve shaft 411 unchanged, so that the outer plug 413 has a relatively large outer diameter, and it is beneficial for the second valve shaft 421 and the inner plug 422 to pass through the outer plug 413. Preferably, a sealing member 414 is arranged between the sliding sleeve 412 and the first valve shaft 411 to avoid leakage.

[0094] In order to improve the structural strength and rigidity of the sliding sleeve 412, in an embodiment, the sliding sleeve 412 comprises a main sleeve portion 4121, a flared sleeve portion 4122 and a connecting ring portion 4123 which are coaxially connected in sequence, the main sleeve portion 4121 is fixedly sleeved on the outside of the first valve shaft 411, the hole diameter of the main sleeve portion 4121 is equal everywhere, and the second valve shaft 421 is slidingly matched with the main sleeve portion 4121; the flared sleeve portion 4122 is connected to the end of the main sleeve portion 4121 away from the electromagnetic mechanism 1, the flared sleeve portion 4122 has a larger diameter than the main sleeve portion 4121, and the connecting ring portion 4123 is connected with the main plug. The structure of the sliding sleeve 412 is beneficial to realize the sliding guidance of the second valve shaft 421 through the cooperation of the main sleeve portion 4121 and the second valve shaft 421, and ensure the sliding reliability of the second valve shaft 421; by providing the flared sleeve portion 4122, it is beneficial to increase the outer diameter of the sliding sleeve 412, and thus improve the connection convenience of the sliding sleeve 412 and the outer plug 413.

[0095] In an embodiment, the main elastic member 5 is sleeved outside the sliding sleeve 412 and abuts against the main sleeve 2 and the sliding sleeve 412 at both ends respectively. Specifically, the bottom of the positioning cylinder portion 22 is raised to form a raised portion 221 in the direction towards the valve port 313, the first end of the main elastic member 5 is sleeved outside the raised portion 221 and abuts against the bottom of the positioning cylinder portion 22 to provide positioning for the installation of the main elastic member 5. In other embodiments, the second end of the main elastic member 5 can also abut against the outer blocking head 413.

[0096] The flared cylinder portion 4122 includes coaxially connected first and second flared portions, the first flared portion is connected between the second flared portion and the main cylinder portion 4121, and the outer diameters of the main cylinder portion 4121, the first flared portion and the second flared portion gradually increase to increase the inner diameter and the outer diameter of the end of the flared cylinder portion 4122 away from the main cylinder portion 4121, while enhancing the overall structural strength and rigidity of the sliding sleeve 412. The second end of the main elastic member 5 is sleeved outside the first flared portion and abuts against the second flared portion.

[0097] The outer blocking head 413 has a mounting through hole, the hole wall of the mounting through hole is provided with a mounting ring groove, the flared cylinder portion 4122 is in interference fit with the mounting through hole, and the connecting ring portion 4123 is inserted into the positioning ring groove to realize the mounting and positioning of the outer blocking head 413 relative to the sliding sleeve 412 in the axial and radial directions, and ensure the assembly reliability of the outer blocking head 413 and the sliding sleeve 412.

[0098] The second end of the first valve shaft 411 is provided with a mounting groove 4111, the first end of the second valve shaft 421 is inserted into the mounting groove 4111, so that the sliding stroke of the second valve shaft 421 relative to the first valve shaft 411 in the direction away from the valve port 313 can be limited by the groove bottom of the mounting groove 4111, while the overall structural stability of the valve core mechanism 4 is improved. In other embodiments, the second valve core assembly 42 can also be located entirely outside the first valve shaft 411.

[0099] The second valve shaft 421 includes coaxially connected first, second sliding shaft portions 4211, 4212 and a connecting shaft portion 4213 in sequence along the axial direction, the diameter of the second valve shaft portion 4212 is greater than the diameters of the first sliding shaft portion 4211 and the connecting shaft portion 4213, the first sliding shaft portion 4211 is inserted into the mounting groove 4111, the second sliding shaft portion 4212 is in sliding fit with the sliding sleeve 412, and the connecting shaft portion 4213 is connected with the inner blocking head 422. The connecting shaft portion 4213 is located inside the flared cylinder portion 4122.

[0100] In one embodiment, the auxiliary elastic element 43 is located inside the outer sealing head 413 and sleeved on the second valve shaft 421. Both ends of the auxiliary elastic element 43 abut against the sliding sleeve 412 and the inner sealing head 422, respectively. This increases the diameter of the auxiliary elastic element 43, facilitating its selection and ensuring sufficient elastic force to reset the second valve core assembly 42. In other embodiments, the auxiliary elastic element 43 may also be disposed between the first valve shaft 411 and the second valve shaft 421.

[0101] like Figure 2 , Figure 5 and Figure 6 As shown, in one embodiment, the valve plate portion 31 is recessed in a direction away from the electromagnetic mechanism 1, forming a recessed portion 311. The bottom of the recessed portion 311 has a valve port 313. An inner sealing surface is provided on the inner side of the recessed portion 311, and an outer sealing surface is provided on the outer side of the valve plate portion 311. The outer sealing surface is closer to the electromagnetic mechanism 1 than the inner sealing surface. This arrangement ensures that when the valve core mechanism 4 is in the closed state, the inner sealing plug 422 extends out of the outer sealing plug 413, thereby guaranteeing the sealing effect of the inner sealing plug 422 on the valve port 313 and reducing interference between the outer sealing plug 413 and the inner sealing plug 422.

[0102] In another embodiment, the outer sealing surface and the inner sealing surface may be coplanar. In yet another embodiment, the outer sealing surface may be further away from the electromagnetic mechanism 1 than the inner sealing surface.

[0103] When the solenoid valve 100 is assembled onto the valve seat 200, the outer bottom of the recess 311 abuts against the cavity wall of the valve chamber 202, and the portion of the valve plate 31 without the recess 311 is spaced apart from the bottom of the valve chamber 202. In one embodiment, the first sealing ring 300 is pressed between the valve plate 31 and the bottom of the valve chamber 202 to reduce assembly difficulty and ensure sealing. In other embodiments, the first sealing ring 300 may also be pressed between the surrounding wall 32 and the peripheral cavity wall of the valve chamber 202.

[0104] Furthermore, the bottom of the recessed portion 311 protrudes in the direction towards the electromagnetic mechanism 1 to form an arcuate protrusion 312. The inner ring of the arcuate protrusion 312 forms a valve port 313. The protruding ring of the arcuate protrusion 312 is spaced apart from the bottom of the valve cavity 202. This allows the arcuate protrusion 312 to deform in the direction towards the connecting hole when the inner sealing head 422 presses against the inner sealing surface, thereby making the inner sealing head 422 fit tightly against the inner sealing surface. At the same time, the arcuate protrusion also facilitates the compression of the inner sealing head 422, further ensuring the sealing performance after mating.

[0105] Furthermore, the outer sealing plug 413 has a sealing ring 4131 protruding from one end facing the valve plate 31. The sealing ring 4131 presses against the outer sealing surface to improve the sealing performance.

[0106] This embodiment also provides a gas-fired water heating device, including the valve device described above. The gas-fired water heating device provided in this embodiment can reduce costs and improve the convenience of testing and maintenance.

[0107] Example 2

[0108] This embodiment provides a solenoid valve 100 and a valve device including the solenoid valve 100. The specific structure of the valve device provided in this embodiment is the same as that in Embodiment 1, with only some differences in the configuration. This embodiment will not repeat the structure that is the same as that in Embodiment 1.

[0109] like Figure 7 As shown, in this embodiment, the sliding sleeve 412 has a structure with a closed first end and an open second end. The first end of the sliding sleeve 412 is installed in the mounting groove 4111 and fits against the groove wall of the mounting groove 4111. This arrangement ensures that the second valve shaft 421 is located within the sliding sleeve 412, preventing the second valve shaft 421 from contacting the first valve shaft 411 and causing wear. It also better ensures the airtightness between the first valve core assembly 41 and the second valve core assembly 42.

[0110] In one embodiment, the sliding sleeve 412 is riveted to the groove wall of the mounting groove 4111 to ensure the connection stability of the sliding sleeve 412 and eliminate the need for holes or grooves in the sliding sleeve 412. In other embodiments, the sliding sleeve 412 and the first valve shaft 411 are detachable or connected by other means.

[0111] The sliding sleeve 412 includes an insert sleeve portion 4124, a main sleeve portion 4121, a flared sleeve portion 4122, and a connecting ring portion 4123, which are connected sequentially along the axial direction and have gradually increasing outer diameters. The insert sleeve portion 4124 is inserted into the mounting groove 4111. Further, a first sliding shaft portion 4211 is inserted into the insert sleeve portion 4124, and a second sliding shaft portion 4212 cooperates with the main sleeve portion 4121.

[0112] Other structures of the solenoid valve 100 and valve device can be set with reference to the above embodiments, and will not be described again here.

[0113] This embodiment also provides a gas-fired water heating device, including the valve device described above. The gas-fired water heating device provided in this embodiment can reduce costs and improve the convenience of testing and maintenance.

[0114] 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.

[0115] The specific contents of the foregoing specific embodiments only express several embodiments of the present application, which are described in a relatively specific and detailed manner, but are not construed as limiting the patent scope of the present application. It should be pointed out that, for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. An electromagnetic valve characterized by comprising: The utility model relates to a valve, including: Electromagnetic mechanism (1) with center through -hole, Main sleeve (2) one end is closed and the other end is open, the closed end of main sleeve (2) is inserted in the center through -hole, Valve port frame (3) is connected with main sleeve (2) and is surrounded with main sleeve (2) and is formed with the lateral opening (321) of accommodating space, the valve port (313) of one end of valve port frame (3) away from main sleeve (2) is opened with main sleeve (2) coaxial, Valve core mechanism (4) first end sliding insertion is in the inner chamber of main sleeve (2) and the second end has sealing cap, the sealing cap is located in the accommodating space and can open or block the valve port (313), so that valve core mechanism (4) switches between the open state of valve port (313) and lateral opening (321) intercommunication and the closed state of sealing cap closing valve port (313), Main elastic member (5) acts on valve core mechanism (4), When electromagnetic mechanism (1) is energized, drive valve core mechanism (4) axial movement, so that valve core mechanism (4) switches to first state, main elastic member (5) is used to apply the elastic force of making valve core mechanism (4) keep or revert to second state to valve core mechanism (4), one of first state and second state is open state, and the other is closed state.

2. The electromagnetic valve according to claim 1, characterized by Main sleeve (2) includes coaxial connection installation cylinder portion (21) and positioning cylinder portion (22), installation cylinder portion (21) is inserted in the center through -hole, the first end of valve core mechanism (4) is slidably inserted in installation cylinder portion (21), positioning cylinder portion (22) is located on the outside of electromagnetic mechanism (1) and the outer diameter is greater than the outer diameter of installation cylinder portion (21), the one end of valve port frame (3) away from valve port (313) is inserted with positioning cylinder portion (22) and is matched with sleeve, And / or, the axial positioning structure is arranged between main sleeve (2) and valve port frame (3), and the axial positioning structure limits the axial movement of valve port frame (3) relative to main sleeve (2).

3. The electromagnetic valve according to claim 2, characterized by The axial positioning structure includes a hook portion (23) provided at an end of the positioning cylinder portion (22) away from the installation cylinder portion (21), and the hook portion (23) is hooked with a side edge of the lateral opening (321) facing the electromagnetic mechanism (1). And / or, a first end of the valve port frame (3) is inserted into an inner side of the positioning cylinder portion (22), and an end face of the valve port frame (3) facing the electromagnetic mechanism (1) abuts against a cylinder bottom of the positioning cylinder portion (22).

4. The electromagnetic valve according to claim 3, characterized by The lateral openings (321) are arranged in plurality along a circumferential direction of the valve port frame (3), and the lateral openings (321) are arranged one by one corresponding to the hook portions (23).

5. The electromagnetic valve according to claim 2, characterized by The valve port frame (3) is a cylindrical structure, a first end of the cylindrical structure is coaxially inserted and fitted with the positioning cylinder portion (22), a second end face of the cylindrical structure is provided with the valve port (313), and a side wall of the cylindrical structure is provided with the lateral openings (321).

6. The electromagnetic valve according to claim 1, characterized by The valve port frame (3) is integrally formed; and / or, the valve port frame (3) is riveted with the main sleeve (2).

7. The electromagnetic valve according to any one of claims 1 to 6, characterized by The valve port frame (3) has an inner sealing surface surrounding the outer side of the valve port (313) and an outer sealing surface surrounding the outer side of the inner sealing surface; The valve core mechanism (4) comprises a first valve core assembly (41), a second valve core assembly (42) and an auxiliary elastic member (43), the first end of the first valve core assembly (41) is slidingly installed in the main sleeve (2) and the second end has an outer blocking head (413), the first end of the second valve core assembly (42) is slidingly installed inside the first valve core assembly (41) and the second end has an inner blocking head (422), the inner blocking head (422) cooperates with the inner sealing surface to block the valve port (313), the outer blocking head (413) cooperates with the outer sealing surface, the sealing cap comprises the inner blocking head (422) and the outer blocking head (413); The main elastic member (5) is connected between the first valve core assembly (41) and the main sleeve (2) and applies an action force to the first valve core assembly (41) towards the valve port (313), the auxiliary elastic member (43) is arranged between the first valve core assembly (41) and the second valve core assembly (42) and applies an elastic force to the second valve core assembly (42) towards the valve port (313).

8. The electromagnetic valve according to claim 7, characterized by The valve port frame (3) has a valve plate portion (31) oppositely and spacedly arranged with the main sleeve (2), the valve plate portion (31) is recessed to form a recessed portion (311) in a direction away from the electromagnetic mechanism (1), the bottom of the recessed portion (311) is provided with the valve port (313), the bottom surface of the recessed portion (311) has the inner sealing surface, the valve plate portion (31) has the outer sealing surface, and the outer sealing surface is arranged around the outer side of the recessed portion (311).

9. The electromagnetic valve according to claim 8, characterized by The bottom of the recessed portion (311) is convexly formed with a circular-arc convex portion (312) in a direction towards the electromagnetic mechanism (1), the circular-arc convex portion (312) is arranged around the valve port (313), and the convex surface of the circular-arc convex portion (312) forms the inner sealing surface.

10. The electromagnetic valve according to claim 7, characterized by The first valve core assembly (41) further comprises a first valve shaft (411) and a sliding sleeve (412), the first end of the sliding sleeve (412) is connected to the second end of the first valve shaft (411), and the second end of the sliding sleeve (412) is connected with the outer blocking head (413); The second valve core assembly (42) comprises a second valve shaft (421), the second valve shaft (421) is slidingly inserted into the sliding sleeve (412), and the inner blocking head (422) is installed on one end of the second valve shaft (421) close to the valve port (313).

11. The electromagnetic valve according to claim 10, characterized by Both ends of the sliding sleeve (412) are open, and the first end of the sliding sleeve (412) is sleeved on the outer side of the first valve shaft (411); Or, the first end of the sliding sleeve (412) is closed and the second end is open, the second end of the first valve shaft (411) is provided with a mounting groove (4111), the first end of the sliding sleeve (412) is inserted into the mounting groove (4111), and the second end of the sliding sleeve (412) has a larger inner diameter than the first end of the sliding sleeve (412); And / or, the auxiliary elastic member (43) is sleeved outside the second valve shaft (421), and the two ends of the auxiliary elastic member (43) abut against the sliding sleeve (412) and the inner blocking head (422) respectively.

12. A valve device characterized by comprising: Comprising: A valve seat (200) having a gas inlet channel (201), a valve cavity (202) and a gas outlet channel (203) in sequence, the valve cavity (202) and the gas inlet channel (201) are communicated through a vent hole (204), and the side of the valve cavity (202) away from the vent hole (204) penetrates the valve seat (200) and forms a mounting port; The electromagnetic valve according to any one of claims 1-11 is sealed and mounted at the mounting port, the valve port frame (3) and the sealing cap are located in the valve cavity (202), the lateral opening (321) is communicated with the gas outlet channel (203), the end of the valve port frame (3) away from the electromagnetic mechanism (1) is sealed and matched with the cavity wall of the valve cavity (202), and the vent hole (204) is communicated with the valve port (313) in opposition.

13. The valve device of claim 12, wherein, The first sealing ring (300) is pressed between the valve port frame (3) and the cavity wall of the valve cavity (202), and surrounds the outside of the valve port (313) and the vent hole (204); And / or, the second sealing ring (400) is pressed between the main sleeve (2) and the cavity wall of the valve cavity (202), and the lateral opening (321) and the gas outlet channel (203) are located between the second sealing ring (400) and the valve port (313).

14. A gas water heating apparatus characterised by, The valve device according to claim 12 or 13.

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