Connection valve and combustion appliance

Abstract

The utility model discloses a connecting valve and a combustion appliance. The connecting valve comprises a valve body, the valve body is provided with a gas output channel, a first input port, a second input port and a circulation cavity, and the gas output channel communicates with the circulation cavity through a communicating port; the first communication structure comprises a connecting assembly and a sealing assembly, the connecting assembly is arranged at the first input port of the valve body and used for being connected with a first gas cylinder, and the sealing assembly is arranged in a sliding mode relative to the cavity wall of the circulation cavity and can open the first input port under the action of the gas pressure of gas in the first gas cylinder so as to convey first gas into the gas output channel; and the second communication structure is mounted at the second input port, is used for being connected with a second gas cylinder, and can open the second input port under the action of the gas pressure of the gas in the second gas cylinder so as to convey the second gas into the gas output channel. According to the connecting valve, different gas cylinders can be connected through the first communicating structure and the second communicating structure, and the practicability of the connecting valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a connecting valve and a combustion appliance. Background Art

[0002] During the use of the combustion appliance, a valve is required to control the on and off of gas supply. The valve is installed on the main unit of the appliance. However, the valve in the existing technology can only be connected to one type of gas cylinder for gas supply, so the types of gas supply cylinders that can be adapted are limited, which is inconvenient for the use of the combustion appliance. Utility Model Content

[0003] In order to solve at least one problem existing in the above-mentioned prior art, according to one aspect of the present invention, a connecting valve is provided, comprising:

[0004] a valve body, the valve body being provided with a gas output channel, a first input port, a second input port, and a circulation cavity, the gas output channel and the circulation cavity being connected via a communication port, the first input port and the second input port being located at two ends of the circulation cavity along the axial direction of the valve body;

[0005] a first communication structure, comprising a connecting assembly and a sealing assembly, wherein the connecting assembly is disposed at the first input port of the valve body and is configured to connect to a first gas cylinder; the sealing assembly is slidably disposed relative to a cavity wall of the flow cavity and the connecting assembly, and is configured to seal the first input port. The sealing assembly is configured to open the first input port under the action of gas pressure in the first gas cylinder to deliver the first gas to the gas output channel;

[0006] The second connecting structure is installed at the second input port and is used to connect to the second gas cylinder. The second input port can be opened under the action of the gas pressure in the second gas cylinder to transport the second gas to the gas output channel.

[0007] In some embodiments, the sealing assembly includes a sliding rod and a first elastic member. The sliding rod is slidably arranged relative to the cavity wall of the circulation cavity and is used to abut against the connecting assembly to seal the first input port. The first elastic member abuts between the sliding rod and the cavity wall of the circulation cavity or between the sliding rod and the second connecting structure to apply a holding force to the sliding rod.

[0008] In some embodiments, the flow chamber includes a first section, a second section, and a third section that are sequentially connected, the aperture of the second section is smaller than the aperture of the first section and the third section, the first section is provided with the first input port, the third section is provided with the second input port, and the communication port is provided in the first section, the second section, or the third section;

[0009] The first elastic member is held against the end of the first section.

[0010] In some embodiments, the first section includes a first portion and a second portion, the first portion has the first input port, the diameter of the first portion is larger than the diameter of the second portion, and the communication port is provided in the second portion, the second section, or the third section;

[0011] The sealing assembly also includes a first sealing ring, which is sleeved on the sliding rod and is used to press against the end of the first part connected to the second part when the gas pressure in the first gas cylinder is greater than a preset value to block the gas from flowing to the connecting port.

[0012] In some embodiments, the sliding rod includes a supporting head and a rod portion, the diameter of the supporting head facing the rod portion is larger than the diameter of the rod portion, the supporting head is slidably arranged in the first portion, and the rod portion is slidably arranged in the first portion and the second portion, a limiting ring is provided on the rod portion, the first sealing ring is clamped between the supporting head and the limiting ring, and the first elastic member is supported between the limiting ring and the end of the second portion.

[0013] In some embodiments, an outer diameter of one end of the abutting head facing the connecting component gradually decreases toward the connecting component.

[0014] In some embodiments, the supporting head includes a constant diameter section and a variable diameter section, the constant diameter section is connected between the variable diameter section and the rod, the outer diameter of the variable diameter section gradually decreases toward the connecting component, and the constant diameter section is provided with an exhaust channel extending along the axial direction of the valve body.

[0015] In some embodiments, the exhaust channel is connected to the outer wall of the constant diameter section.

[0016] In some embodiments, the connecting assembly includes an external mounting member and a second sealing ring, wherein the external mounting member is connected to the end of the valve body for connecting to the first gas cylinder, and the second sealing ring is supported between the external mounting member and the inner wall of the first input port for supporting the sealing assembly.

[0017] In some embodiments, the first gas cylinder includes a first body and a first gas nozzle, the external mounting member has a penetration opening, the first body is connected to the external mounting member, and the first gas nozzle is penetrated through the penetration opening;

[0018] The connecting assembly also includes an inner mounting part and a third sealing ring. The inner mounting part is arranged on the cavity wall of the penetration opening and is used to be mounted on the outside of the port of the first gas cylinder. The third sealing ring and the second sealing ring are arranged on opposite sides of the inner mounting part. The third sealing ring is used to be mounted on the outside of the first gas nozzle.

[0019] In some embodiments, the second connecting structure includes a connecting piece, a push rod, a second elastic piece and a fuse. The connecting piece is connected to the valve body and is used to connect to the second gas cylinder. The push rod is slidably arranged relative to the connecting piece and the fuse. The second elastic piece is supported between the fuse and the push rod and is used to apply an elastic force to the push rod. The fuse is used to melt when the ambient temperature is greater than a preset temperature so that the push rod can move toward the center of the valve body, thereby blocking the exhaust of the second gas cylinder.

[0020] In some embodiments, the fuse and the connector are threadedly connected.

[0021] In some embodiments, the connector includes a mounting section and a connecting section, the mounting section is connected to the valve body, the connecting section is used to connect to the second gas cylinder, and the diameter of the mounting section is larger than the diameter of the connecting section;

[0022] The second communication structure further includes a fourth sealing ring, which is sleeved on the outside of the push rod and is used to abut against the end of the installation section facing the connecting section.

[0023] Another aspect of the present invention provides a combustion appliance comprising the connecting valve described above.

[0024] In summary, the connecting valve and the combustion apparatus provided by the present invention have the following technical effects:

[0025] By arranging two connecting structures at both ends of the valve body: a first connecting structure and a second connecting structure, different gas cylinders can be connected respectively through the first connecting structure and the second connecting structure, and gas can be delivered to the combustion appliance through the gas output channel. Therefore, by connecting different gas cylinders, the practicality of the connecting valve can be improved to meet the use of multiple gas cylinders. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of a first gas cylinder according to an embodiment of the present utility model;

[0027] Figure 2 for Figure 1 Reference diagram of the usage status of the first gas cylinder in FIG;

[0028] Figure 3 This is a reference diagram of the second gas cylinder in use according to an embodiment of the present utility model;

[0029] Figure 4 for Figure 3 A cross-sectional schematic diagram of the second gas cylinder and the connecting valve;

[0030] Figure 5 This is a structural diagram of a connecting valve according to an embodiment of the present utility model;

[0031] Figure 6 for Figure 5 A top view of the connecting valve in FIG.

[0032] Figure 7 for Figure 6 Schematic diagram of the cross section along the AA direction;

[0033] Figure 8 for Figure 6 Schematic diagram of the cross section along the BB direction;

[0034] Figure 9 for Figure 5 Exploded diagram of the connecting valve in FIG;

[0035] Figure 10 for Figure 5 A top view of the valve body;

[0036] Figure 11 for Figure 10 Schematic diagram of the cross section along CC direction;

[0037] Figure 12 for Figure 5 A schematic structural diagram of the first connected structure in FIG.

[0038] Figure 13 for Figure 12 A cross-sectional schematic diagram of the first connected structure in FIG;

[0039] Figure 14 for Figure 12 A schematic diagram of the structure of the sealing component;

[0040] Figure 15 for Figure 5 A schematic structural diagram of the second connected structure in FIG.

[0041] Figure 16 for Figure 15 A cross-sectional schematic diagram of the second connecting structure in FIG.

[0042] Figure: 100-connecting valve, 10-valve body, 11-gas output channel, 12-first input port, 13-second input port, 14-circulation chamber, 141-first section, 1411-first wall, 1412-first part, 1413-second part, 1414-third wall, 142-second section, 143-third section, 1431-second wall, 1432-first internal thread, 15-communication port, 16-installation notch, 20-first communication structure, 21-connecting assembly, 211-external mounting member, 2111-through port, 212-internal mounting member, 213-second sealing ring, 214-third sealing ring, 22-sealing assembly, 221-sliding rod, 222-first Elastic part, 223-first sealing ring, 224-holding head, 2241-exhaust channel, 2242-constant diameter section, 2243-reducing diameter section, 225-rod, 226-limiting ring, 30-second connecting structure, 31-connecting part, 311-first external thread, 312-second internal thread, 313-installing section, 314-connecting section, 32-top rod, 33-second elastic part, 34-fuse, 341-second external thread, 35-fourth sealing ring, 40-switch structure, 50-connecting plug, 200-first gas cylinder, 210-first main body, 220-first gas nozzle, 300-second gas cylinder, 310-second main body, 320-second gas nozzle, 330-valve core. DETAILED DESCRIPTION

[0043] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0044] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0046] The present invention will be further described in detail below with reference to the accompanying drawings.

[0047] See also Figures 1 to 16, a connecting valve 100 provided in an embodiment of the present utility model includes a valve body 10 , a first connecting structure 20 and a second connecting structure 30 .

[0048] Among them, see Figures 1 to 9 The valve body 10 is provided with a gas output channel 11, a first input port 12, a second input port 13 and a circulation chamber 14. The gas output channel 11 and the circulation chamber 14 are connected through a communication port 15. The first input port 12 and the second input port 13 are located at both ends of the circulation chamber 14 along the axial direction of the valve body 10; the first communicating structure 20 includes a connecting component 21 and a sealing component 22. The connecting component 21 is provided at the first input port 12 of the valve body 10 and is used to connect to the first gas cylinder 200. The sealing component 22 is slidably arranged relative to the cavity wall of the circulation chamber 14 and the connecting component 21, and is used to seal the first input port 12. The first input port 12 can be opened under the action of the gas pressure in the first gas cylinder 200 to deliver the first gas to the gas output channel 11; the second communicating structure 30 is installed at the second input port 13, and is used to connect to the second gas cylinder 300. The second input port 13 can be opened under the action of the gas pressure in the second gas cylinder 300 to deliver the second gas to the gas output channel 11.

[0049] The above-mentioned connecting valve 100 is provided with two connecting structures at both ends of the valve body 10: a first connecting structure 20 and a second connecting structure 30. In this way, different gas cylinders can be connected respectively through the first connecting structure 20 and the second connecting structure 30, and gas can be delivered to the combustion appliance through the gas output channel 11. Therefore, by connecting different gas cylinders, the practicality of the connecting valve 100 can be improved to meet the use of multiple gas cylinders.

[0050] Among them, see Figure 7 、 Figure 9 as well as Figures 12 to 14The sealing assembly 22 of this embodiment includes a slide rod 221 and a first elastic member 222. The slide rod 221 is slidably arranged relative to the cavity wall of the circulation cavity 14 and is used to abut against the connecting assembly 21 to seal the first input port 12. The first elastic member 222 abuts between the slide rod 221 and the cavity wall of the circulation cavity 14 or between the second connecting structure 30 and is used to apply a holding force to the slide rod 221. Therefore, when the second input port 13 is used and the first input port 12 is not in use, one end of the slide rod 221 is closed under the elastic force of the first elastic member 222. It is pressed against the connecting component 21. At this time, the gas discharged from the second gas cylinder 300 cannot flow into the first input port 12; when the first input port 1 needs to be used, this end of the second gas cylinder 300 is in a closed state. Under the action of the gas pressure of the first gas cylinder 200, the first elastic member 222 is compressed, and the sliding rod 221 slides toward the second input port 13 and disengages from the connecting component 21. At this time, the gas flows into the through hole of the connecting component 21, and flows between the sliding rod 221 and the cavity wall of the circulation cavity 14, enters the connecting port 15, and finally flows out through the gas output channel 11.

[0051] Among them, see Figure 7 、 Figure 10 and Figure 11 In order to facilitate the installation and use of the first elastic member 222, the flow chamber 14 includes a first section 141, a second section 142 and a third section 143 that are connected in sequence. The aperture of the second section 142 is smaller than the apertures of the first section 141 and the third section 143. The first section 141 is provided with a first input port 12, and the third section 143 is provided with a second input port 13. The first elastic member 222 is supported on the end of the first section 141, thereby making the aperture of the second section 142 smaller than the apertures of the first section 141 and the third section 143, so that the first section 141 forms a second section 142 toward the end of the second section 142. A wall 1411, and the third section 143 has a second wall 1431 at one end facing the second section 142. In this way, the first wall 1411 and the second wall 1431 can be used to respectively abut against the sealing component 22 and the second connecting structure 30 to limit the continued movement of the sealing component 22 and the first connecting structure 20, that is, the other end of the first elastic member 222 abuts against the first wall 1411 of the first section 141, so that a shorter first elastic member 222 can be set, which is convenient for quickly compressing the first elastic member 222 under the action of the gas pressure in the first gas cylinder 200.

[0052] The communication port 15 can be provided in the first section 141, the second section 142, or the third section 143. Specifically, in the connection valve 100 of this embodiment, the communication port 15 is provided in the first section 141. Since the diameter of the first section 141 is larger than the diameter of the second section 142, it is convenient to provide a gas output channel 11 with a smaller diameter, thereby achieving communication between the gas output channel 11 and the first section 141. In other embodiments, the communication port 15 can be provided in the second section 142 or the third section 143, which is not limited here.

[0053] When the connecting port 15 is provided on the first section 141, the slide bar 221 slides toward the second section 142, thereby opening the opening of the first gas cylinder 200, and the gas in the first gas cylinder 200 can be input along the first input port 12 of the first section 141, and flow into the gas output channel 11 through the connecting port 15, so as to be output through the gas output channel 11; when the second gas cylinder 300 needs to discharge gas, the slide bar 221 is in a sealed state with respect to the first gas cylinder 200, and the gas pressure in the second gas cylinder 300 opens the second connecting structure 30, and the second gas flows into the first section 141 through the third section 143 and the second section 142 in sequence, and then flows into the gas output channel 11 from the connecting port 15, so as to be output through the gas output channel 11.

[0054] Furthermore, in order to ensure the normal use of the valve body 10, the first section 141 includes a first portion 1412 and a second portion 1413, the first portion 1412 has a first input port 12, the diameter of the first portion 1412 is larger than the diameter of the second portion 1413, and the communication port 15 is provided in the second portion 1413 or the second section 142 or the third section 143; the sealing assembly 22 also includes a first sealing ring 223, the first sealing ring 223 is sleeved on the slide rod 221, and is used to press against the end of the first portion 1412 connected to the second portion 1413 when the gas pressure in the first gas cylinder 200 is greater than a preset value to block the gas from flowing to the communication port 15. In this way, when the gas output channel 11 is completely connected to the outside due to misoperation, due to the first gas cylinder 200 The gas in the bottle 200 can flow out smoothly, which increases the outflow pressure of the gas. At this time, the slide rod 221 can be further pushed in the circulation chamber 14, and the slide rod 221 continues to slide in the direction of the second connecting structure 30, thereby driving the first sealing ring 223 to slide and press against the end of the first part 1412 connected to the second part 1413, that is, press against the third wall 1414 of the first part 1412 toward the second part 1413. In this way, since the connecting port 15 is not set on the first part 1412, the opening of the first part 1412 toward the second part 1413 by the first sealing ring 223 and the slide rod 221 is blocked. At this time, the gas cannot continue to flow in the direction of the second part 1413, so as to achieve the effect of preventing gas leakage.

[0055] Specifically, see Figures 12 to 14The sliding rod 221 of this embodiment includes a supporting head 224 and a rod portion 225. The diameter of the supporting head 224 facing the rod portion 225 is larger than the diameter of the rod portion 225. The supporting head 224 is slidably arranged in the first portion 1412. A limiting ring 226 is provided on the rod portion 225. The first sealing ring 223 is clamped between the supporting head 224 and the limiting ring 226. The first elastic member 222 is supported between the limiting ring 226 and the end of the second portion 1413. In this way, the first sealing ring 223 is installed by clamping the first sealing ring 223 between the supporting head 224 and the limiting ring 226, and the first elastic member 222 is installed by setting the limiting ring 226.

[0056] The abutting head 224 is slidably disposed within the first portion 1412, and the diameter of the rod portion 225 is smaller than the inner diameters of the first portion 1412 and the second portion 1413. It is understood that when the abutting head 224 slides within the first portion 1412, a gap is created between the abutting head 224 and the cavity wall of the first portion 1412. When the gas in the first gas cylinder 200 is discharged, it can flow between the abutting head 224 and the cavity wall of the first portion 1412, and then flow into the communication port 15 located in the second portion 1413.

[0057] Furthermore, since the abutting head 224 needs to abut against the connecting assembly 21 to achieve sealing of the first input port 12, the outer diameter of the abutting head 224 at one end facing the connecting assembly 21 gradually decreases toward the connecting assembly 21. Thus, when the first gas cylinder 200 is no longer in use, the elastic force of the first elastic member 222 pushes the abutting head 224 into the connecting assembly 21 so that it can abut against the inner wall of the connecting assembly 21, thereby achieving sealing. The abutting head 224 with a gradually decreasing outer diameter also serves as a guide. In other embodiments, a constant outer diameter abutting head 224 can also be provided, and a sealing effect can also be achieved by the abutting head 224 against the connecting assembly 21.

[0058] Furthermore, since gas needs to flow between the abutting head 224 and the cavity wall of the first portion 1412, in order to ensure smooth flow of gas, an exhaust channel 2241 extending along the axial direction of the valve body 10 is provided on the abutting head 224. The abutting head 224 includes a constant diameter section 2242 and a reducing diameter section 2243. The constant diameter section 2242 is connected between the reducing diameter section 2243 and the rod portion 225. The outer diameter of the reducing diameter section 2243 gradually decreases toward the direction of the connecting component 21. The constant diameter section 2242 is provided with a plurality of holes. An exhaust channel 2241 is provided which extends axially along the valve body 10, so that the variable diameter section 2243 and the connecting assembly 21 are abutted against each other to achieve sealing, and the exhaust channel 2241 is set by the constant diameter section 2242. Due to the setting of the exhaust channel 2241, the gas can not only flow through between the abutting head 224 and the cavity wall of the first part 1412, but also flow through the exhaust channel 2241 to flow into the connecting port 15, thereby ensuring the flow rate of the gas and thus ensuring the heat supply for gas combustion.

[0059] Among them, see Figure 14 To facilitate the arrangement of the exhaust channel 2241, the exhaust channel 2241 communicates with the outer wall of the constant diameter section 2242. Specifically, a notch is simply formed in the constant diameter section 2242 to form the exhaust channel 2241, thereby facilitating the formation of the exhaust channel 2241. In other embodiments, a through hole may be formed in the constant diameter section 2242 along the axial direction of the valve body 10, and the through hole may communicate with the outer wall of the variable diameter section 2243, thereby achieving gas circulation.

[0060] It can be understood that in order to ensure the flow rate of gas, a plurality of exhaust channels 2241 can be provided along the circumference of the abutting head 224, and each exhaust channel 2241 can allow gas to flow through, thereby ensuring the effect of the flow rate of gas.

[0061] See also Figure 7 、 Figure 9 、 Figure 12 and Figure 13 , is a structural schematic diagram of a connecting assembly 21 according to an embodiment of the present invention. The connecting assembly 21 includes an outer mounting member 211 and a second sealing ring 213. The outer mounting member 211 is connected to the end of the valve body 10 for connecting the first gas cylinder 200. The second sealing ring 213 is held between the outer mounting member 211 and the inner wall of the first input port 12 for abutting against the sealing assembly 22. That is, the second sealing ring 213 is used to abut against the abutting head 224 of the push rod 32 to achieve sealing of the first input port 12 when the first gas cylinder 200 is not in use. At the same time, the outer mounting member 211 is provided to achieve installation of the first gas cylinder 200. When the first gas cylinder 200 is plugged into the outer mounting member 211, the first gas nozzle 220 of the first gas cylinder 200 abuts against the second sealing ring 213. Figure 1As shown, the gas is discharged, driving the slide rod 221 to move, thereby achieving the discharge of the gas in the first gas cylinder 200; at the same time, through the setting of the second sealing ring 213, since the second sealing ring 213 can be deformed to abut against the abutting head 224, the first input port 12 can be sealed when the gas in the first gas cylinder 200 is not needed.

[0062] The external mounting member 211 can be connected to the first gas cylinder 200 by plugging or snapping, which is not limited here. Figure 1 and Figure 2 The first gas cylinder 200 includes a first main body 210 and a first gas nozzle 220 provided on the first main body 210. The first main body 210 is connected to an external mounting member 211. The external mounting member 211 is provided with a penetration opening 2111. The first gas nozzle 220 of the first gas cylinder 200 is penetrated through the penetration opening 2111 and abuts against the second sealing ring 213.

[0063] Specifically, if Figure 7 As shown, the inner diameter of the second sealing ring 213 is smaller than the diameter of the penetration opening 2111 , so that the gas nozzle of the first gas cylinder 200 can abut against the end surface of the second sealing ring 213 after passing through the penetration opening 2111 .

[0064] Among them, such as Figure 11 As shown, when the second sealing ring 213 is installed, a mounting notch 16 is provided on the valve body 10 , and the second sealing ring 213 is clamped in the mounting notch 16 .

[0065] Furthermore, in order to limit the installation of the first gas cylinder 200 on the valve body 10, the connecting assembly 21 further includes an inner mounting member 212 and a third sealing ring 214. The inner mounting member 212 is provided on the cavity wall of the penetration opening 2111 and is used to be sleeved outside the port of the first gas cylinder 200. The third sealing ring 214 and the second sealing ring 213 are provided on opposite sides of the inner mounting member 212. The third sealing ring 214 is used to be sleeved outside the first gas nozzle 220 to limit the first gas nozzle 220. In this way, due to the second sealing ring 213 and The third sealing ring 214 is made of a flexible and elastic material. Therefore, an internal mounting part 212 made of a metal material needs to be set between the two to be able to support the second sealing ring 213 and the third sealing ring 214 when they are deformed. Through the setting of the third sealing ring 214, when the gas of the first gas nozzle 220 is discharged, the gas may go outward along the cavity wall between the first gas nozzle 220 and the penetration opening 2111. Through the setting of the third sealing ring 214, a sealing effect is achieved to prevent gas leakage.

[0066] Among them, see Figure 3 and Figure 4The second gas cylinder 300 of this embodiment includes a second body 310, a second gas nozzle 320 disposed on the second body 310, and a valve core 330 slidably disposed in the second gas nozzle 320. Figure 7 、 Figure 9 、 Figure 15 and Figure 16 , is a schematic structural diagram of a second connecting structure 30 in an embodiment of the present invention. The second connecting structure 30 includes a connecting member 31, a push rod 32, a second elastic member 33, and a fuse 34. The connecting member 31 is connected to the valve body 10 and is used to connect to the second gas nozzle 320 of the second gas cylinder 300. The push rod 32 is slidably arranged relative to the connecting member 31 and the fuse 34. The second elastic member 33 is abutted between the fuse 34 and the push rod 32 to apply an elastic force to the push rod 32. The fuse 34 is used to melt when the ambient temperature is greater than a preset temperature, so that the push rod 32 can move toward the center of the valve body 10, thereby blocking the exhaust of the second gas cylinder 300. Thus, through the setting of the fuse 34, when the external temperature of the entire connecting valve 100 is too high, the temperature of the fuse 34 rises, and when it is greater than the melting point of the fuse 34, the fuse 34 melts. Due to the melting of the fuse 34, the push rod 32 can move toward the direction of the first connecting structure 20 under the action of the driving force, and the push rod 32 cannot continue to support the valve core 330 in the second gas cylinder 300 under the action of the elastic force, and gradually separates from the valve core 330 in the second gas cylinder 300, so that the valve core 330 returns to its original position, and the gas in the second gas cylinder 300 cannot continue to be discharged, that is, the exhaust of the second gas cylinder 300 is blocked to achieve the effect of fuse protection.

[0067] It can be understood that the fuse 34 of this embodiment is a plastic part so as to be able to melt under high temperature conditions.

[0068] The connector 31 of this embodiment is threadedly connected to the valve body 10 at the second input port 13 of the valve body 10. A first internal thread 1432 is provided on the inner wall of the third section 143 of the flow chamber 14. The connector 31 is provided with a first external thread 311. The first internal thread 1432 and the first external thread 311 are connected to achieve installation of the connector 31. Furthermore, since the ejector pin 32 needs to be completely separated from the valve core 330 to block the exhaust of the second gas cylinder 300, in order to ensure the protective effect of the fuse, the length of the internal thread section is set to be greater than the length of the external thread section of the connector 31. Therefore, there is a residual amount of the internal thread section facing the side of the second section 142. After the fuse 34 melts, the second elastic member 33 and the ejector pin 32 can continue to move toward the second section 142, achieving complete separation of the ejector pin 32 and the valve core 330, thereby ensuring the protective effect of the fuse.

[0069] Furthermore, when the fuse 34 and the connector 31 are installed, the fuse 34 and the connector 31 are threadedly connected. Specifically, the outer wall of the fuse 34 is provided with a second external thread 341, and the inner wall of the connector 31 is provided with a second internal thread 312. The second external thread 341 and the second internal thread 312 are connected to achieve the installation of the fuse 34.

[0070] Among them, see Figure 15 and Figure 16 As a structural diagram of the connector 31 of this embodiment, the connector 31 includes a mounting section 313 and a connecting section 314. The mounting section 313 is connected to the valve body 10, and the connecting section 314 is used to connect to the second gas cylinder 300. The diameter of the mounting section 313 is larger than the diameter of the connecting section 314. Specifically, the connecting section 314 is used to connect to the second gas nozzle 320. The second connecting structure 30 also includes a fourth sealing ring 35. The fourth sealing ring 35 is sleeved on the outside of the push rod 32 and is used to abut against the end of the mounting section 313 facing the connecting section 314. In this way, when the second input port 13 is not in use, the elastic force of the second elastic member 33 abuts the fourth sealing ring 35 against the end surface of the mounting section 313 facing the connecting section 314, thereby achieving a sealing effect. When the fourth sealing ring 35 is installed, a slot can be provided on the push rod 32 to limit the installation of the fourth sealing ring 35.

[0071] Among them, see Figure 2 Only Figure 9 In order to realize the on-off of the gas supply between the connecting valve 100 and the combustion appliance, the connecting valve 100 further includes a switch structure 40 and a connecting plug 50. The switch structure 40 is provided at one end of the gas output channel 11 and is used to open or close the communication port 15 between the gas output channel 11 and the circulation chamber 14. The connecting plug 50 is provided at the other end of the gas output channel 11 and is used to connect to the combustion appliance. When the connecting plug 50 is connected to the combustion appliance, when the switch structure 40 opens the communication port 15, the gas provided by the first gas cylinder 200 or the gas provided by the second gas cylinder 300 can be guided to the combustion appliance by the connecting plug 50.

[0072] Among them, the switch structure 40 can realize opening or closing the connecting port 15 by a plug valve structure, that is, relying on the plug body to rotate around the center line to achieve the purpose of opening and closing, or a ball valve structure can be adopted to control the on and off of the gas through the movement of the ball, which is not limited here.

[0073] The above-mentioned connecting valve 100 is used as follows: when gas is delivered through the first gas cylinder 200, the top rod 32 in the second connecting structure 30 drives the fourth sealing ring 35 to abut against the end of the mounting section 313 under the elastic force of the second elastic member 33, thereby achieving sealing of the second input port 13. The gas in the first gas cylinder 200 generates a thrust on the first elastic member 222 and the slide rod 221. The slide rod 221 moves toward the direction of the second input port 13, compressing the first elastic member 222. At this time, the gas in the first gas cylinder 200 can pass through the abutting head 224 and the flow Gas flows between the walls of the through cavity 14 and into the communication port 15 to be delivered by the connecting plug 50 provided on the gas output channel 11. When gas is delivered through the second gas cylinder 300, the second gas cylinder 300 is mounted on the valve body 10. Under the elastic force of the second elastic member 33, the push rod 32 pushes open the valve core 330. The gas in the second gas cylinder 300 flows into the flow cavity 14 through the gap between the push rod 32 and the inner wall of the connecting member 31, and then flows through the second section 142 in sequence before flowing into the communication port 15. Finally, it is delivered by the connecting plug 50 provided on the gas output channel 11. In other words, the connecting valve 100 of this embodiment can be adapted for use with different gas cylinders, making it more practical.

[0074] In another embodiment, the present invention further provides a combustion appliance, comprising the above-mentioned connecting valve 100. The combustion appliance may be a heating mechanism such as a gas stove.

[0075] The technical means disclosed in the present invention are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. Connecting valve (100), characterized in that, include: A valve body (10), wherein the valve body (10) is provided with a gas output channel (11), a first input port (12), a second input port (13), and a circulation chamber (14); the gas output channel (11) and the circulation chamber (14) are communicated with each other via a communication port (15); the first input port (12) and the second input port (13) are located at two ends of the circulation chamber (14) along the axial direction of the valve body (10); a first communication structure (20), comprising a connecting assembly (21) and a sealing assembly (22); the connecting assembly (21) being provided at the first input port (12) of the valve body (10) and being used for connecting to a first gas cylinder (200); the sealing assembly (22) being slidably provided relative to the cavity wall of the circulation cavity (14) and the connecting assembly (21), being used for sealing the first input port (12), and being capable of opening the first input port (12) under the action of the gas pressure in the first gas cylinder (200) to deliver the first gas to the gas output channel (11); A second connecting structure (30) is installed at the second input port (13) and is used to connect to a second gas cylinder (300). The second input port (13) can be opened under the action of the gas pressure in the second gas cylinder (300) to deliver the second gas to the gas output channel (11).

2. The connecting valve (100) according to claim 1, characterized in that The sealing assembly (22) includes a sliding rod (221) and a first elastic member (222). The sliding rod (221) is slidably arranged relative to the cavity wall of the circulation cavity (14) and is used to abut against the connecting assembly (21) to seal the first input port (12). The first elastic member (222) abuts between the sliding rod (221) and the cavity wall of the circulation cavity (14) or between the sliding rod (221) and the second connecting structure (30) to apply a holding force to the sliding rod (221).

3. The connecting valve (100) according to claim 2, characterized in that The circulation cavity (14) comprises a first section (141), a second section (142) and a third section (143) which are connected in sequence. The aperture of the second section (142) is smaller than the apertures of the first section (141) and the third section (143). The first section (141) is provided with the first input port (12), and the third section (143) is provided with the second input port (13). The communication port (15) is provided in the first section (141), the second section (142) or the third section (143). The first elastic member (222) abuts against the end of the first section (141).

4. The connecting valve (100) according to claim 3, characterized in that The first section (141) includes a first portion (1412) and a second portion (1413), the first portion (1412) has the first input port (12), the diameter of the first portion (1412) is larger than the diameter of the second portion (1413), and the communication port (15) is provided in the second portion (1413) or the second section (142) or the third section (143); The sealing assembly (22) further includes a first sealing ring (223), which is sleeved on the sliding rod (221) and is used to abut against the end of the first part (1412) connected to the second part (1413) when the gas pressure in the first gas cylinder (200) is greater than a preset value, so as to block the gas from flowing to the connecting port (15).

5. The connecting valve (100) according to claim 4, characterized in that The sliding rod (221) includes a supporting head (224) and a rod portion (225), the diameter of the supporting head (224) facing the rod portion (225) is larger than the diameter of the rod portion (225), the supporting head (224) is slidably arranged in the first portion (1412), and the rod portion (225) is slidably arranged in the first portion (1412) and the second portion (1413), a limiting ring (226) is provided on the rod portion (225), the first sealing ring (223) is clamped between the supporting head (224) and the limiting ring (226), and the first elastic member (222) is supported between the limiting ring (226) and the end of the second portion (1413).

6. The connecting valve (100) according to claim 5, characterized in that The outer diameter of one end of the abutting head (224) facing the connecting component (21) gradually decreases in the direction of the connecting component (21).

7. The connecting valve (100) according to claim 6, characterized in that The abutting head (224) comprises a constant diameter section (2242) and a variable diameter section (2243); the constant diameter section (2242) is connected between the variable diameter section (2243) and the rod portion (225); the outer diameter of the variable diameter section (2243) gradually decreases toward the connecting assembly (21); and the constant diameter section (2242) is provided with an exhaust passage (2241) extending along the axial direction of the valve body (10).

8. The connecting valve (100) according to claim 7, characterized in that The exhaust channel (2241) is connected to the outer wall of the constant diameter section (2242).

9. The connecting valve (100) according to any one of claims 1 to 8, characterized in that: The connecting assembly (21) comprises an outer mounting member (211) and a second sealing ring (213); the outer mounting member (211) is connected to the end of the valve body (10) and is used to connect the first gas cylinder (200); the second sealing ring (213) is abutted between the outer mounting member (211) and the inner wall of the first input port (12) and is used to abut against the sealing assembly (22).

10. The connecting valve (100) according to claim 9, characterized in that The first gas cylinder (200) comprises a first main body (210) and a first gas nozzle (220); the external mounting member (211) has a penetration opening (2111); the first main body (210) is connected to the external mounting member (211); and the first gas nozzle (220) is penetrated through the penetration opening (2111); The connecting assembly (21) further comprises an inner mounting member (212) and a third sealing ring (214); the inner mounting member (212) is arranged on the cavity wall of the penetration opening (2111) and is used to be mounted outside the port of the first gas cylinder (200); the third sealing ring (214) and the second sealing ring (213) are arranged on opposite sides of the inner mounting member (212); and the third sealing ring (214) is used to be mounted outside the first gas nozzle (220).

11. The connecting valve (100) according to any one of claims 1 to 8 or 10, characterized in that: The second connecting structure (30) includes a connecting piece (31), a push rod (32), a second elastic piece (33) and a fuse (34); the connecting piece (31) is connected to the valve body (10) and is used to connect to the second gas cylinder (300); the push rod (32) is slidably arranged relative to the connecting piece (31) and the fuse (34); the second elastic piece (33) is supported between the fuse (34) and the push rod (32) and is used to apply an elastic force to the push rod (32); the fuse (34) is used to melt when the ambient temperature is greater than a preset temperature, so that the push rod (32) can move toward the center of the valve body (10), thereby achieving the blocking of the exhaust of the second gas cylinder (300).

12. The connecting valve (100) according to claim 11, characterized in that The fuse (34) and the connector (31) are threadedly connected.

13. The connecting valve (100) according to claim 11, characterized in that The connecting member (31) comprises a mounting section (313) and a connecting section (314), wherein the mounting section (313) is connected to the valve body (10), and the connecting section (314) is used to connect to the second gas cylinder (300), and the diameter of the mounting section (313) is larger than the diameter of the connecting section (314); The second connecting structure (30) further includes a fourth sealing ring (35), which is sleeved outside the push rod (32) and is used to abut against the end of the mounting section (313) facing the connecting section (314).

14. A combustion appliance, characterized in that It comprises the connecting valve (100) according to any one of claims 1 to 13.

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