Gas valve integrating safety flameout protection and reset functions

Abstract

The invention discloses a gas valve integrating safety flameout protection and reset functions. The gas valve comprises a valve body, a flameout protection electromagnetic valve, a valve element assembly, a detection control mechanism and a linkage clamping and locking mechanism. The valve body is provided with a gas inlet channel, a first gas outlet channel and a second gas outlet channel, the flameout protection electromagnetic valve is used for closing and opening gas input of the gas inlet channel to the gas valve, and the valve element assembly comprises a valve element and a valve shaft and is used for controlling gas output of the first gas outlet channel and the second gas outlet channel. The detection control mechanism comprises a valve rod, a sealing plug and a valve rod reset elastic piece, the valve rod is at the closing position, the sealing plug cuts off gas output of the second gas outlet channel, the valve rod is at the opening position, the second gas outlet channel can output gas, and the linkage clamping and locking mechanism is used for clamping and locking the position of the valve rod when the valve rod enters the closing position and locking the valve rod when the valve shaft axially acts relative to the valve element. And clamping and locking of the linkage clamping and locking mechanism on the valve rod can be relieved. The gas valve is convenient to install, use and reset.

Description

Technical Field

[0001] This invention relates to gas appliances, and particularly to a gas valve that integrates safety flameout protection and reset functions. Background Technology

[0002] In some gas appliances, such as some barbecue grills, when performing additional cooking, such as frying, it is necessary to reduce the heat of the appliance. After the frying pan is removed, the appliance needs to be restored to its original state. In existing technology, two valves are typically required to control this process. One valve is a basic safety flameout protection valve, which is equipped with a flameout protection solenoid valve. This solenoid valve automatically cuts off the gas input when the flame of the gas appliance is accidentally extinguished. The safety flameout protection valve has two gas outputs, which can be controlled by rotating the valve core via the valve shaft. The other valve is a push-button valve, connected to the safety flameout protection valve via a gas line. The push-button valve has a movable valve stem. When the frying pan is placed on the gas appliance, it triggers the valve stem, causing the push-button valve to disconnect one of the gas outputs from the safety flameout protection valve while retaining the other gas output, thus meeting the needs of frying. The aforementioned gas system that controls gas output based on cooking utensils has the following drawbacks: 1. It requires two valves, which need to be connected by pipelines, making the gas system complex, cumbersome to install and use, and difficult to maintain later; 2. After the valve stem of the push-button valve is triggered, it will be locked to maintain a stable single-path output. When the cooking utensils are removed and the states of each valve need to be reset and restarted, the safety flameout protection valve needs to be closed first, then the push-button valve needs to be manually reset, and finally the safety flameout protection valve needs to be reopened. The operator needs to operate back and forth between the push-button valve and the safety flameout protection valve, which is cumbersome. Summary of the Invention

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a gas valve that integrates safety flameout protection and reset functions, which is convenient to install and use, and easy to reset.

[0004] According to an embodiment of the present invention, a gas valve integrating safety flameout protection and reset functions includes: a valve body having an inlet channel, a first outlet channel, and a second outlet channel, wherein the inlet channel is used to input gas, and the first and second outlet channels are used to output gas; a flameout protection solenoid valve disposed in the valve body and used to close and open the inlet channel to supply gas to the gas valve; a valve core assembly including a valve core and a valve shaft, wherein the valve core is rotatably disposed in the valve body and used to control the gas output of the first and second outlet channels, the valve shaft and the valve core are coaxially connected and used to drive the valve core to rotate, and the valve shaft is axially movable relative to the valve core; and a detection and control mechanism including a valve stem, a sealing plug, and a valve stem reset elastic element, wherein the valve stem is movably and telescopically disposed in the valve body along its length, and the valve stem includes a trigger. The valve stem has a sealing plug disposed on the valve stem. A valve stem reset elastic element cooperates with the valve stem and the valve body. The valve stem has a closed position and an open position: in the closed position, the sealing plug is positioned to cut off the gas output of the second gas outlet channel; in the open position, the sealing plug is positioned to allow the second gas outlet channel to output gas. When the trigger end is pressed, the valve stem can move to the closed position; when the trigger end is released, the valve stem can be reset to the open position via the valve stem reset elastic element. A linkage locking mechanism is disposed on the valve body. The linkage locking mechanism is used to lock the valve stem when it enters the closed position. The linkage locking mechanism is linked with the valve shaft. When the valve shaft moves axially relative to the valve core, it can release the linkage locking mechanism from locking the valve stem.

[0005] According to an embodiment of the present invention, a gas valve integrating safety flameout protection and reset functions has at least the following advantages: The gas valve with the above structure integrates the functions of flameout protection, gas control, and pressure detection and reset into one valve body, thereby eliminating the need for multiple valves to be used in combination, making installation and use convenient, simplifying the gas system, and facilitating maintenance; the valve stem can be unlocked through the valve shaft, thus eliminating the need for multiple back-and-forth operations, and the valve core and valve stem can be reset simultaneously through the valve shaft, making operation convenient.

[0006] According to some embodiments of the present invention, the sealing plug is movably sleeved on the valve stem along the axial direction of the valve stem, the detection and control mechanism further includes a sealing plug elastic element, the sealing plug elastic element cooperates with the valve stem and the sealing plug, the valve body is provided with a branch connection port for supplying gas to the second gas outlet channel, when the valve stem is in the closed position, the sealing plug presses against the periphery of the branch connection port and closes the branch connection port, the sealing plug elastic element is in a compressed state to provide the sealing plug with elastic force to seal the branch connection port; when the valve stem is in the open position, the sealing plug moves away and opens the branch connection port.

[0007] According to some embodiments of the present invention, the linkage locking mechanism includes a locking member and a locking elastic member. The locking member is movably disposed on the valve body. The locking member includes a locking portion, and the valve stem includes a locking engagement portion. The locking elastic member cooperates with the locking member and the valve body, and is used to make the locking portion tend to move towards the valve stem. When the valve stem enters the closed position, the locking portion cooperates with the locking engagement portion and restricts the valve stem from resetting. The locking member is linked to the valve shaft. When the valve shaft moves axially, it can drive the locking member to move and cause the locking portion and the locking engagement portion to disengage.

[0008] According to some embodiments of the present invention, the locking member includes a pivot portion, which is pivotally connected to the valve body and the pivot axis is perpendicular to the axis of the valve shaft. A locking portion is connected to the circumferential surface of the pivot portion, and a pushing portion is also connected to the circumferential surface of the pivot portion. A pushing rod is connected to the valve core, and the pushing rod is coaxially disposed on the valve core in a length direction. One end of the pushing rod is used to abut against the valve shaft, and the other end of the pushing rod is opposite to the pushing portion. When the valve shaft moves axially toward the locking member relative to the valve core, it can push the pushing portion through the pushing rod and cause the locking member to rotate in a first rotation direction. When the locking member rotates in the first rotation direction, the locking portion and the locking engagement portion can disengage. The locking elastic member is used to make the locking member have a tendency to rotate in a second rotation direction, wherein one of the first rotation direction and the second rotation direction is clockwise and the other is counterclockwise.

[0009] According to some embodiments of the present invention, the snap-fit ​​part is a snap hook body, and the snap-fit ​​mating part is a stepped part provided on the periphery of the valve stem.

[0010] According to some embodiments of the present invention, a push rod reset elastic element is provided between the push rod and the valve core, and the push rod reset elastic element is used to drive the push rod and the valve shaft to reset in a direction away from the locking element.

[0011] According to some embodiments of the present invention, the valve body is provided with an air intake port for receiving gas input from the air intake channel, the flameout protection solenoid valve is provided with a blockage for blocking and opening the air intake port and a blockage reset elastic member for causing the blockage to tend to push against the air intake port, and a push-opening part is also connected to the outer periphery of the pivot portion, the push-opening part being correspondingly provided with the blockage, and when the locking member rotates to disengage the locking part and the locking engagement part, the push-opening part can push open the blockage to open the air intake port.

[0012] According to some embodiments of the present invention, the valve body includes an adjusting member, and the two ends of the locking elastic member respectively abut against the locking portion and the adjusting member, and the adjusting member can adjust its position relative to the locking member in the direction of approaching and moving away from the locking portion.

[0013] According to some embodiments of the present invention, the detection control mechanism further includes a press-triggered structure, which includes a press member and a press-reset elastic member. The valve body has a guide hole, and the side wall of the guide hole has a through hole. The valve stem passes through the through hole. The press member is movably disposed in the guide hole. The trigger end is opposite to the press member. The press-reset elastic member cooperates with the press member and the valve body. The peripheral surface of the press member is provided with a push surface and a recessed groove. The push surface and the groove side wall of the recessed groove are adjacent. When the press member is released, the press member can be held in the position opposite to the trigger end in the recessed groove by the press-reset elastic member, so as to make way and allow the valve stem to return to the open position. When the press member is pressed, the press member can push the trigger end through the push surface to drive the valve stem to switch to the closed position.

[0014] According to some embodiments of the present invention, the valve body has an air intake chamber for communicating with the air intake channel, the flameout protection solenoid valve is used to control the connection and disconnection between the air intake channel and the air intake chamber, the valve body has a valve core cavity, the valve core is rotatably disposed in the valve core cavity, the valve core has a central channel, one end of the central channel along the axial direction of the valve core is connected to the air intake chamber, the peripheral sidewall of the valve core cavity has an air outlet for outputting gas to the first air outlet channel and the second air outlet channel, the valve core can rotate to a position where the peripheral surface of the valve core blocks the air outlet, the peripheral surface of the valve core has a slot structure, the slot structure is connected to the central channel, and the slot structure is used to connect the air outlet and the central channel together.

[0015] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a three-dimensional schematic diagram of an embodiment of the present invention; Figure 2 for Figure 1 A three-dimensional schematic diagram of the structure shown from another perspective; Figure 3 This is an exploded view diagram of an embodiment of the present invention; Figure 4 This is a cross-sectional view of an embodiment of the present invention; Figure 5 This is a partial structural diagram of an embodiment of the present invention; Figure 6 This is a three-dimensional schematic diagram of the linkage locking mechanism according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the internal gas passage and gas flow direction of the valve body according to an embodiment of the present invention. Figure 8 This is a three-dimensional schematic diagram of the valve core according to an embodiment of the present invention.

[0017] Figure label: Valve body 100, air inlet channel 110, first air outlet channel 120, second air outlet channel 130, branch connection port 101, air inlet connection port 102, guide hole 140, through hole 150, air inlet chamber 160, valve core chamber 170, air outlet connection port 103, air outlet chamber 180, connecting branch 104, adjusting component 190; Flameout protection solenoid valve 200, blockage 210, blockage reset elastic element 220; Valve core assembly 300, valve core 310, valve shaft 320, push rod 330, push rod reset elastic element 340, central channel 311, slot structure 312; The detection and control mechanism 400, valve stem 410, sealing plug 420, valve stem reset elastic element 430, sealing plug elastic element 440, press trigger structure 450, trigger end 411, snap-fit ​​part 412, press element 451, press reset elastic element 452. Linkage locking mechanism 500, locking component 510, locking elastic component 520, locking part 511, pivoting part 512, pushing part 513, and opening part 514. Detailed Implementation

[0018] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0019] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0020] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0021] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0022] Reference Figures 1 to 8 A gas valve integrating safety flameout protection and reset functions includes: valve body 100, flameout protection solenoid valve 200, valve core assembly 300, detection and control mechanism 400, and linkage locking mechanism 500.

[0023] The valve body 100 is provided with an air inlet channel 110, a first air outlet channel 120 and a second air outlet channel 130. The air inlet channel 110 is used to input gas, and the first air outlet channel 120 and the second air outlet channel 130 are used to output gas.

[0024] The flameout protection solenoid valve 200 is located in the valve body 100 and is used to close and open the intake passage 110 to the gas input to the gas valve.

[0025] The valve core assembly 300 includes a valve core 310 and a valve shaft 320. The valve core 310 is rotatably disposed on the valve body 100 and is used to control the gas output (e.g., on / off, flow rate) of the first gas outlet passage 120 and the second gas outlet passage 130. The valve shaft 320 is coaxially connected to the valve core 310 and is used to drive the valve core 310 to rotate. The valve shaft 320 can move axially relative to the valve core 310.

[0026] The detection and control mechanism 400 includes a valve stem 410, a sealing plug 420, and a valve stem reset elastic element 430. The valve stem 410 is movably and telescopically disposed on the valve body 100 along its length. The valve stem 410 includes a trigger end 411. The sealing plug 420 is disposed on the valve stem 410. The valve stem reset elastic element 430 cooperates with the valve stem 410 and the valve body 100. The valve stem 410 has a closed position and an open position: in the closed position, the sealing plug 420 is in a position that cuts off the gas output of the second gas outlet channel 130; in the open position, the sealing plug 420 is in a position that allows the second gas outlet channel 130 to output gas; when the trigger end 411 is pressed, the valve stem 410 can move to the closed position; when the trigger end 411 is released, the valve stem 410 can be reset to the open position through the valve stem reset elastic element 430.

[0027] The linkage locking mechanism 500 is provided on the valve body 100. The linkage locking mechanism 500 is used to lock the position of the valve stem 410 when the valve stem 410 enters the closed position. The linkage locking mechanism 500 is linked with the valve shaft 320. When the valve shaft 320 moves axially relative to the valve core 310, it can release the linkage locking mechanism 500 from locking the valve stem 410.

[0028] When the gas valve described above is in use, the valve core 310 is rotated by rotating the valve shaft 320, thereby allowing the first gas outlet channel 120 and the second gas outlet channel 130 to output gas simultaneously. When the cookware is placed down and the trigger end 411 of the valve stem 410 is pressed, the sealing plug 420 can disconnect the gas output of the second gas outlet channel 130. At this time, the linkage locking mechanism 500 locks the position of the valve stem 410, thereby stably maintaining the state where only the first gas outlet channel 120 outputs gas, which is suitable for the use of cookware with gas appliances. When the cookware is removed and it is necessary to restore the gas valve to the state where the first gas outlet channel 120 and the second gas outlet channel 130 can output gas simultaneously, the valve shaft 320 can be moved axially, thereby releasing the linkage locking mechanism 500 from locking the valve stem 410. The valve stem 410 is reset through the valve stem reset elastic element 430, thereby reopening the second gas outlet channel 130, and the gas valve returns to the state where it can output gas in two directions.

[0029] The gas valve with the above structure integrates functions such as flameout protection, gas control, and pressure detection and reset into a single valve body 100, thus eliminating the need for multiple valves in combination. This makes installation and use convenient, simplifies the gas system, and facilitates maintenance. Unlocking the valve stem 410 can be done through the valve shaft 320, eliminating the need for multiple back-and-forth operations. The valve shaft 320 can simultaneously control the valve core 310 and the reset of the valve stem 410, making operation convenient.

[0030] In this embodiment, the valve stem 410 can be slidably connected by opening a sliding connection hole in the valve body 100, thereby realizing the extension and retraction of the valve stem 410.

[0031] In this embodiment, the sealing plug 420 is movably sleeved on the valve stem 410 along the axial direction of the valve stem 410. The detection and control mechanism 400 also includes a sealing plug elastic element 440, which cooperates with the valve stem 410 and the sealing plug 420. The valve body 100 is provided with a branch connection port 101 for supplying air to the second air outlet channel 130. When the valve stem 410 is in the closed position, the sealing plug 420 presses against the periphery of the branch connection port 101 and closes the branch connection port 101. The sealing plug elastic element 440 is in a compressed state to provide the sealing plug 420 with elastic force to seal the branch connection port 101. When the valve stem 410 is in the open position, the sealing plug 420 moves away and opens the branch connection port 101. With the above structure, the branch connection port 101 can be elastically pressed and blocked, thereby stably achieving the closure of the second air outlet channel 130.

[0032] In this embodiment, the linkage locking mechanism 500 includes a locking member 510 and a locking elastic member 520. The locking member 510 is movably disposed on the valve body 100 and includes a locking portion 511. The valve stem 410 includes a locking engagement portion 412. The locking elastic member 520 cooperates with the locking member 510 and the valve body 100 and is used to make the locking portion 511 tend to move toward the valve stem 410. When the valve stem 410 enters the closed position, the locking portion 511 cooperates with the locking engagement portion 412 and restricts the valve stem 410 from resetting. The locking member 510 is linked to the valve shaft 320. When the valve shaft 320 moves axially, it can drive the locking member 510 to move and cause the locking portion 511 and the locking engagement portion 412 to disengage. When the valve stem 410 reaches the closed position, the locking elastic element 520 causes the locking part 511 to automatically engage with the locking mating part 412, thereby locking the position of the valve stem 410. When the valve shaft 320's movement causes the locking part 511 and the locking mating part 412 to disengage, the valve stem 410, now unlocked, can be reset by the valve stem reset elastic element 430. This structure allows for simple locking of the valve stem 410's position and is easy to implement.

[0033] In this embodiment, the locking member 510 includes a pivoting portion 512, which is pivotally connected to the valve body 100 and whose pivot axis is perpendicular to the axis of the valve shaft 320. A locking portion 511 is connected to the circumferential surface of the pivoting portion 512. A pushing portion 513 is also connected to the circumferential surface of the pivoting portion 512. A pushing rod 330 is connected to the valve core 310. The pushing rod 330 is coaxially disposed on the valve core 310, movably extending and retracting along its length. One end of the pushing rod 330 is used to abut against the valve shaft 320. The other end of the valve shaft 320 is opposite to the push part 513. When the valve shaft 320 moves axially toward the locking member 510 relative to the valve core 310, it can push the push part 513 through the push rod 330 and cause the locking member 510 to rotate in the first direction. When the locking member 510 rotates in the first direction, the locking part 511 and the locking engagement part 412 can disengage. The locking elastic member 520 is used to make the locking member 510 have a tendency to rotate in the second direction. One of the first direction and the second direction is clockwise and the other is counterclockwise. The locking member 510 adopts a rotating structure, and the axis of rotation is perpendicular to the axis of the valve shaft 320, which facilitates the valve shaft 320 to push the locking member 510 to rotate through the push rod 330. The linkage structure is simple and easy to implement.

[0034] It is conceivable that in some embodiments, the locking member 510 is not limited to locking by rotation, but may also lock by linear extension or retraction, and the specific configuration can be made according to the actual situation.

[0035] In this embodiment, the latching part 511 is a latching hook body, and the latching engagement part 412 is a stepped portion provided at the periphery of the valve stem 410. Using the above-described latching hook engagement structure, the valve stem 410 can be easily latched by the rotating locking member 510.

[0036] In this embodiment, a push rod reset elastic element 340 is provided between the push rod 330 and the valve core 310. The push rod reset elastic element 340 is used to drive the push rod 330 and the valve shaft 320 to reset in the direction away from the locking element 510, thereby facilitating the reset of the valve shaft 320 and the push rod 330 to their initial positions.

[0037] In one embodiment, one end of the valve shaft 320 is connected to the valve core 310 via a radially arranged locking pin, allowing them to rotate together. Simultaneously, the valve core 310 has an axially extending sliding groove that engages with the locking pin, allowing the valve shaft 320 to move axially relative to the valve core 310. It is conceivable that in other embodiments, the valve shaft 320 can also achieve a connection with the valve core 310 that allows them to rotate together and move axially relative to each other through other structures, such as a mutual sliding insertion fit, where the hole for the sliding insertion fit is non-circular.

[0038] In this embodiment, the valve body 100 is provided with an air inlet port 102 for receiving gas input from the air inlet passage 110. The flameout protection solenoid valve 200 is provided with a plug 210 for blocking and opening the air inlet port 102 and a plug reset elastic member 220 for causing the plug 210 to tend to push against the air inlet port 102. A push-opening part 514 is also connected to the outer periphery of the pivot part 512. The push-opening part 514 is correspondingly provided with the plug 210. When the locking member 510 rotates to disengage the locking part 511 and the locking engagement part 412, the push-opening part 514 can push open the plug 210 to open the air inlet port 102. With the above structure, when the valve shaft 320 moves axially, the flameout protection solenoid valve 200 can be opened at the same time as the valve stem 410 is reset to open the second gas outlet passage 130, so that the gas valve can be restarted.

[0039] In one embodiment, the locking member 510 is formed by combining two parts in two segments. In other embodiments, the locking member 510 may also be a single integral part.

[0040] In this embodiment, the valve body 100 includes an adjusting member 190. The two ends of the locking elastic member 520 abut against the locking portion 511 and the adjusting member 190, respectively. The adjusting member 190 can adjust its position relative to the locking member 510 along directions approaching and moving away from the locking portion 511. Using this structure, the adjusting member 190 can be used to fine-tune the elastic force applied to the locking member 510 by the locking elastic member 520, thereby facilitating the adjustment of the locking engagement. In this embodiment, the valve body 100 may have a threaded hole, and the adjusting member 190 can be threaded into the threaded hole, allowing for position adjustment through rotation. In the art, component position adjustment is a conventional technique, and those skilled in the art can also reasonably configure the position adjustment method of the adjusting member 190 according to actual conditions, without being limited to the structure of this embodiment.

[0041] In this embodiment, the detection control mechanism 400 further includes a press trigger structure 450, which includes a press member 451 and a press reset elastic member 452. The valve body 100 has a guide hole 140, and the side wall of the guide hole 140 has a through hole 150. The valve stem 410 passes through the through hole 150. The press member 451 is movably disposed in the guide hole 140. The trigger end 411 is opposite to the press member 451. The press reset elastic member 452 is opposite to the press member 451. In conjunction with the valve body 100, the circumferential surface of the pressing member 451 is provided with a pushing surface and a recessed groove. The pushing surface and the groove sidewalls of the recessed groove are adjacent to each other. When the pressing member 451 is released, the pressing member 451 can be held in the position opposite to the recessed groove and the trigger end 411 by pressing the reset elastic member 452, so as to make way and allow the valve stem 410 to reset to the open position. When the pressing member 451 is pressed, the pressing member 451 can push the trigger end 411 through the pushing surface to drive the valve stem 410 to switch to the closed position. The above-described structure allows the valve stem 410 to be indirectly triggered by pressing the trigger structure 450, resulting in smooth operation. The valve stem 410 is retracted into the valve body 100, providing good protection. A recessed groove on the pressing member 451 allows the trigger end 411 of the valve stem 410 to be positioned, thus enabling the valve stem 410 to reset. When the pressing member 451 moves within the guide hole 140, it can switch to a pushing surface to engage with the trigger end 411 of the valve stem 410, thereby pushing the valve stem 410 to change position. The above-described structure for linking the pressing member 451 and the valve stem 410 is simple and easy to implement.

[0042] It is conceivable that in other embodiments, the valve stem 410 can be directly linked to the external system, or other structures can be set up to cooperate and link with the valve stem 410. The specific configuration can be made according to the actual situation.

[0043] In this embodiment, the valve body 100 has an air intake chamber 160, which is connected to the air intake channel 110. The aforementioned air intake connection port 102 is used to connect the air intake channel 110 and the air intake chamber 160. The flameout protection solenoid valve 200 is used to control the connection and disconnection between the air intake channel 110 and the air intake chamber 160. The valve body 100 has a valve core cavity 170, and the valve core 310 is rotatably disposed in the valve core cavity 170. The valve core 310 has a central channel 311, which extends along the valve core 310. One axial end of valve core 10 is connected to the intake chamber 160. The peripheral wall of valve core chamber 170 has an outlet port 103 for supplying gas to the first outlet channel 120 and the second outlet channel 130. Valve core 310 can rotate to a position where its peripheral surface blocks the outlet port 103. A slot structure 312 is formed on the peripheral surface of valve core 310, communicating with the central channel 311. The slot structure 312 connects the outlet port 103 and the central channel 311. Gas entering from intake channel 110 passes through the intake port 102 and enters the intake chamber 160 and the central channel 311 of valve core 310. When valve core 310 rotates to a position where the slot structure 312 and the outlet port 103 are aligned and connected, gas can be supplied to the first outlet channel 120 and the second outlet channel 130 through the outlet port 103, thus achieving gas output.

[0044] In one embodiment, the first air outlet channel 120 is connected to the valve core cavity 170 and forms a plurality of air outlet ports 103. The valve body 100 has an air outlet chamber 180. The first air outlet channel 120 is also connected to the air outlet chamber 180 via a bypass. The air outlet chamber 180 is connected to the valve core cavity 170 through a connecting branch 104 and forms another air outlet port 103. In another embodiment, the second air outlet channel 130 is connected to the air outlet chamber 180 through the aforementioned branch port 101. The detection and control mechanism 400 controls the connection and disconnection between the second air outlet channel 130 and the air outlet chamber 180 accordingly.

[0045] In this embodiment, the first gas outlet channel 120 is connected to the valve core cavity 170 and forms two gas outlet ports 103. The gas outlet cavity 180 is connected to the valve core cavity 170 through a connecting branch 104 and forms one gas outlet port 103. The slot structure 312 on the circumferential surface of the valve core 310 is a valve core slot extending circumferentially along the valve core 310. When the valve core 310 rotates, the three valve core slots can respectively connect to the corresponding gas outlet ports 103 and the central channel 311. Thus, the gas entering from the intake channel 110 can sequentially pass through the intake cavity 160, the central channel 311 of the valve core 310, the aforementioned valve core slot, and the gas outlet port 103 to reach the gas outlet cavity 180 and the first gas outlet channel 120, and further reach the second gas outlet channel 130 through the branch connecting port 101, realizing two-way output. One of the valve core slots is a slot with a gradually changing cross-sectional size, so that the gas output can change when the valve core 310 rotates.

[0046] In one embodiment, the slot structure 312 of the valve core 310 is specifically a slot extending circumferentially along the valve core 310. In other embodiments, the slot structure 312 may also be an opening, which can be configured according to the actual situation.

[0047] It is conceivable that the structure of the gas passage inside the valve body 100 is not limited to the above-described embodiments. Those skilled in the art can reasonably configure the structure of the internal gas passage according to the actual situation, and are not limited to the embodiments shown in the attached drawings.

[0048] In some embodiments, the elastic element mentioned above is specifically a spring, which can press against the mating components to provide a restoring force. In other embodiments, the elastic element is not limited to a spring; for example, other elastic structures such as rubber bodies or sheet springs may be used, and the specific configuration can be made according to the actual situation.

[0049] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A gas valve integrating safety flameout protection and reset functions, characterized in that, include: The valve body (100) is provided with an air inlet channel (110), a first air outlet channel (120) and a second air outlet channel (130). The air inlet channel (110) is used to input gas, and the first air outlet channel (120) and the second air outlet channel (130) are used to output gas. A flameout protection solenoid valve (200) is disposed in the valve body (100) and is used to close and open the gas intake passage (110) to the gas input to the gas valve; The valve core assembly (300) includes a valve core (310) and a valve shaft (320). The valve core (310) is rotatably disposed on the valve body (100) and is used to control the gas output of the first gas outlet channel (120) and the second gas outlet channel (130). The valve shaft (320) is coaxially connected to the valve core (310) and is used to drive the valve core (310) to rotate. The valve shaft (320) can move axially relative to the valve core (310). The detection and control mechanism (400) includes a valve stem (410), a sealing plug (420), and a valve stem reset elastic element (430). The valve stem (410) is movably and telescopically disposed on the valve body (100) along its length. The valve stem (410) includes a trigger end (411). The sealing plug (420) is disposed on the valve stem (410). The valve stem reset elastic element (430) cooperates with the valve stem (410) and the valve body (100). The valve stem (410) has a closed position and an open position. Open position: In the closed position, the sealing plug (420) is in a position that cuts off the gas output of the second gas outlet channel (130); in the open position, the sealing plug (420) is in a position that allows the second gas outlet channel (130) to output gas; when the trigger end (411) is pressed, the valve stem (410) can move to the closed position; when the trigger end (411) is released, the valve stem (410) can be reset to the open position through the valve stem reset elastic element (430); A linkage locking mechanism (500) is provided on the valve body (100). The linkage locking mechanism (500) is used to lock the position of the valve stem (410) when the valve stem (410) enters the closed position. The linkage locking mechanism (500) is linked to the valve shaft (320). When the valve shaft (320) moves axially relative to the valve core (310), it can release the locking mechanism (500) from locking the valve stem (410).

2. The gas valve with integrated safety flameout protection and reset function according to claim 1, characterized in that: The sealing plug (420) is movably sleeved on the valve stem (410) along the axial direction of the valve stem (410). The detection and control mechanism (400) also includes a sealing plug elastic element (440). The sealing plug elastic element (440) cooperates with the valve stem (410) and the sealing plug (420). The valve body (100) is provided with a branch connection port (101) for supplying air to the second air outlet channel (130). When the valve stem (410) is in the closed position, the sealing plug (420) presses against the periphery of the branch connection port (101) and closes the branch connection port (101). The sealing plug elastic element (440) is in a compressed state to provide the sealing plug (420) with elastic force to seal the branch connection port (101). When the valve stem (410) is in the open position, the sealing plug (420) leaves and opens the branch connection port (101).

3. The gas valve with integrated safety flameout protection and reset function according to claim 1, characterized in that: The linkage locking mechanism (500) includes a locking element (510) and a locking elastic element (520). The locking element (510) is movably disposed on the valve body (100). The locking element (510) includes a locking portion (511). The valve stem (410) includes a locking engagement portion (412). The locking elastic element (520) cooperates with the locking element (510) and the valve body (100) and is used to make the locking portion (511) have an upward orientation. When the valve stem (410) moves toward the valve stem (410) and enters the closed position, the locking part (511) engages with the locking mating part (412) and restricts the valve stem (410) from resetting. The locking member (510) is linked with the valve shaft (320). When the valve shaft (320) moves axially, it can drive the locking member (510) to move and cause the locking part (511) and the locking mating part (412) to disengage.

4. The gas valve with integrated safety flameout protection and reset function according to claim 3, characterized in that: The locking component (510) includes a pivoting part (512), which is pivotally connected to the valve body (100) and the pivoting axis is perpendicular to the axis of the valve shaft (320). The locking part (511) is connected to the circumferential surface of the pivoting part (512). The circumferential surface of the pivoting part (512) is also connected to a pushing part (513). The valve core (310) is connected to a pushing rod (330), which is coaxially disposed on the valve core (310) and can be movably extended and retracted along the length direction. One end of the pushing rod (330) is used to abut against the valve shaft (320). The other end is opposite to the push part (513). When the valve shaft (320) moves axially toward the locking member (510) relative to the valve core (310), it can push the push part (513) through the push rod (330) and make the locking member (510) rotate in the first direction. When the locking member (510) rotates in the first direction, the locking part (511) and the locking engagement part (412) can disengage. The locking elastic member (520) is used to make the locking member (510) have a tendency to rotate in the second direction. One of the first direction and the second direction is clockwise and the other is counterclockwise.

5. The gas valve with integrated safety flameout protection and reset function according to claim 4, characterized in that: The snap-fit ​​part (511) is a snap hook body, and the snap-fit ​​mating part (412) is a stepped part provided on the periphery of the valve stem (410).

6. The gas valve with integrated safety flameout protection and reset function according to claim 4, characterized in that: A push rod reset elastic element (340) is provided between the push rod (330) and the valve core (310). The push rod reset elastic element (340) is used to drive the push rod (330) and the valve shaft (320) to reset in a direction away from the locking element (510).

7. The gas valve with integrated safety flameout protection and reset function according to claim 4, characterized in that: The valve body (100) is provided with an air inlet (102) for receiving gas input from the air inlet channel (110). The flameout protection solenoid valve (200) is provided with a plug (210) for blocking and opening the air inlet (102) and a plug reset elastic member (220) for making the plug (210) tend to push against the air inlet (102). The outer periphery of the pivot (512) is also connected to a push-opening part (514). The push-opening part (514) is correspondingly provided with the plug (210). When the locking member (510) rotates to disengage the locking part (511) and the locking engagement part (412), the push-opening part (514) can push open the plug (210) to open the air inlet (102).

8. The gas valve with integrated safety flameout protection and reset function according to claim 3 or 4, characterized in that: The valve body (100) includes an adjusting member (190), and the two ends of the locking elastic member (520) abut against the locking part (511) and the adjusting member (190) respectively. The adjusting member (190) can adjust its position relative to the locking member (510) in the direction of approaching and moving away from the locking part (511).

9. The gas valve with integrated safety flameout protection and reset function according to claim 1, characterized in that: The detection and control mechanism (400) further includes a press-triggered structure (450), which includes a press element (451) and a press-reset elastic element (452). The valve body (100) has a guide hole (140), and the side wall of the guide hole (140) has a through hole (150). The valve stem (410) passes through the through hole (150). The press element (451) is movably disposed in the guide hole (140). The trigger end (411) is opposite to the press element (451), and the press-reset elastic element (452) is opposite to the press element (451) and the... The valve body (100) is fitted with a pressing member (451) whose circumferential surface is provided with a pushing surface and a recessed groove. The pushing surface and the groove sidewall of the recessed groove are adjacent to each other. When the pressing member (451) is released, the pressing member (451) can be held in the position opposite to the recessed groove and the trigger end (411) by the pressing reset elastic member (452) to make way and allow the valve stem (410) to reset to the open position. When the pressing member (451) is pressed, the pressing member (451) can push the trigger end (411) by the pushing surface to drive the valve stem (410) to switch to the closed position.

10. The gas valve with integrated safety flameout protection and reset function according to claim 1, characterized in that: The valve body (100) has an air intake chamber (160) for communicating with the air intake channel (110). The flameout protection solenoid valve (200) is used to control the connection and disconnection between the air intake channel (110) and the air intake chamber (160). The valve body (100) has a valve core chamber (170). The valve core (310) is rotatably disposed in the valve core chamber (170). The valve core (310) has a central channel (311). One end of the central channel (311) along the axial direction of the valve core (310) is connected to the air intake chamber (160). The valve core cavity (170) has an outlet port (103) on its peripheral sidewall for supplying gas to the first outlet channel (120) and the second outlet channel (130). The valve core (310) can rotate to a position where its peripheral surface blocks the outlet port (103). The peripheral surface of the valve core (310) has a slot structure (312) that communicates with the central channel (311). The slot structure (312) is used to connect the outlet port (103) and the central channel (311) together.

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