Multi-pass cock valve and combustion apparatus

Abstract

The application discloses a multi-channel cock valve and a combustion equipment, both of which comprise: a valve body, an air inlet cavity is arranged in the valve body, and an air inlet channel, a permanent fire gas conveying channel, a first gas conveying channel and a second gas conveying channel are arranged on the side of the valve body and are communicated with the air inlet cavity; a valve core is rotatably arranged in the valve body and is located in the air inlet cavity, and is used for connecting or isolating at least one of the permanent fire gas conveying channel, the first gas conveying channel and the second gas conveying channel with the air inlet cavity; the permanent fire gas conveying channel, the first gas conveying channel and the second gas conveying channel are circumferentially distributed around the rotation axis of the valve core in sequence and the hole diameters thereof are sequentially increased. The multi-channel cock valve and the combustion equipment can connect the first gas conveying channel, the second gas conveying channel and the permanent fire gas conveying channel with the air inlet channel at the same time by rotating the valve core, so that the permanent fire and the flames with different power sizes are formed, different cooking modes are adapted, the use convenience is improved, and the cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of gas stove technology, and in particular to a multi-channel rotary valve and combustion device. Background Technology

[0002] Due to the diversity of cooking methods, different cooking techniques such as frying, stewing, and boiling require different amounts of heat. Current gas stoves typically use single-channel rotary valves, which control the opening of the gas passage by rotating the valve core, thereby adjusting the gas output flow and achieving heat regulation between the maximum and minimum heat settings.

[0003] However, the maximum flow rate of this single-channel stopcock valve is relatively small, resulting in a limited range of flame adjustment and an inability to meet the diverse flame demands. This is especially problematic for commercial gas stoves, which require a pilot flame and at least one ring of flames around its perimeter. The required flame size varies depending on the pot's diameter and the cooking method. To address this, some commercial gas stoves feature multiple rings of flame holes with progressively increasing power in a radially outward direction. Multiple stopcock valves control the opening and closing of these rings, allowing for different flame levels. However, using multiple stopcock valves to individually control the flame holes requires individual operation, which is inconvenient and costly. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, one objective of the present invention is to provide a multi-channel plug valve that can simultaneously control the on / off state of multiple channels, thereby improving ease of use and reducing costs. Another objective is to provide a combustion device using the above-mentioned multi-channel plug valve.

[0005] According to a first aspect of the present invention, a multi-channel plug valve includes: a valve body, wherein an air inlet chamber is provided inside the valve body, and an air inlet channel, a pilot flame gas supply channel, a first gas supply channel, and a second gas supply channel are provided on the side of the valve body communicating with the air inlet chamber; a valve core, rotatably disposed in the valve body and located within the air inlet chamber, for connecting or isolating at least one of the pilot flame gas supply channel, the first gas supply channel, and the second gas supply channel from the air inlet chamber; the pilot flame gas supply channel, the first gas supply channel, and the second gas supply channel are sequentially circumferentially distributed around the rotation axis of the valve core, and the orifice diameters of the pilot flame gas supply channel, the first gas supply channel, and the second gas supply channel increase sequentially; the valve core has a stop valve arranged in a clockwise direction. The valve core has three working positions: a closed position, a first working position, a second working position, and a third working position. When the valve core is in the first working position, the pilot flame gas supply channel is connected to the air intake chamber, and both the first and second gas supply channels are isolated from the air intake chamber. When the valve core is in the second working position, both the pilot flame gas supply channel and the first gas supply channel are connected to the air intake chamber, and the second gas supply channel is isolated from the air intake chamber. When the valve core is in the third working position, the pilot flame gas supply channel, the first gas supply channel, and the second gas supply channel are all connected to the air intake chamber; or, both the pilot flame gas supply channel and the second gas supply channel are connected to the air intake chamber, and the first gas supply channel is isolated from the air intake chamber.

[0006] A multi-channel plug valve according to an embodiment of the present invention has at least the following features:

[0007] Beneficial effects:

[0008] The multi-channel plug valve with the above structure can connect at least one of the first and second gas supply channels and the pilot flame gas supply channel together with the air intake channel by rotating the valve core, thereby forming a pilot flame and flames of different power to adapt to different cooking methods. It eliminates the need to set up multiple single-channel plug valves to control the opening and closing of multiple channels, improving ease of use and reducing costs.

[0009] In some embodiments of the present invention, the valve core is provided with a first air outlet and a second air outlet spaced apart along its length. The first air outlet connects the gas supply channel of the permanent flame and the air inlet chamber. When the valve core rotates, the second air outlet can be connected to the first gas supply channel or the second air outlet can be connected to the second gas supply channel.

[0010] In some embodiments of the present invention, the valve core is provided with a third air outlet on one side of the second air outlet, and the third air outlet and the second air outlet are distributed circumferentially around the valve core. The valve core can be rotated so that the second air outlet is connected to the second air supply channel and the third air outlet is connected to the first air supply channel.

[0011] In some embodiments of the present invention, the valve core is rotatable between the first working position and the second working position to adjust the overlap between the second air outlet and the first air supply channel; the valve core is rotatable between the second working position and the third working position to adjust the overlap between the second air outlet and the second air supply channel and to adjust the overlap between the third air outlet and the first air supply channel.

[0012] In some embodiments of the present invention, the valve core is provided with a partition between the second air outlet and the third air outlet. The partition is recessed inward toward the center of the valve core to form a connecting groove that connects the second air outlet and the third air outlet. When the partition is directly opposite the first air supply channel, the third air outlet is connected to the first air supply channel through the connecting groove.

[0013] In some embodiments of the present invention, an angle positioning mechanism is provided between the valve core and the valve body, the angle positioning mechanism being able to stabilize the valve core in the second working position or the third working position.

[0014] In some embodiments of the present invention, the inlet of the second air supply channel is a waist-shaped through hole, which extends along the length of the valve body. The shape and size of the second air outlet are consistent with the waist-shaped through hole. The inlet of the first air supply channel and the third air outlet are both circular through holes, and the diameter of the circular through hole is consistent with the width of the waist-shaped through hole.

[0015] In some embodiments of the present invention, the first air outlet includes an arc-shaped air guide groove disposed around the outer peripheral wall of the valve core, and the bottom of the arc-shaped air guide groove is provided with an exhaust hole communicating with the air inlet chamber; when the valve core is in the closed position, the propellant gas supply channel is isolated from the arc-shaped air guide groove; when the valve core is in the first working position, the second working position and the third working position, the propellant gas supply channel is connected to the arc-shaped air guide groove.

[0016] In some embodiments of the present invention, the valve body includes a cylindrical portion, the internal channel of the cylindrical portion forms the air intake chamber, the air intake channel, the permanent flame gas supply channel, the first gas supply channel and the second gas supply channel are formed on the outer peripheral sidewall of the cylindrical portion, the valve core is rotatably disposed at one end of the cylindrical portion, the other end of the cylindrical portion is provided with a solenoid valve, the interior of the cylindrical portion is provided with a switch port, and the solenoid valve is capable of closing the switch port to isolate the air intake channel and the air intake chamber.

[0017] According to a second aspect of the present invention, a combustion device includes a multi-channel plug valve of any of the above-described technical solutions; the combustion device can simultaneously control the on / off state of multiple channels, thereby forming a permanent flame and flames of different power levels to adapt to different cooking methods, and improve ease of use and reduce costs.

[0018] 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

[0019] 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:

[0020] Figure 1 This is a schematic diagram of the structure of one embodiment of the multi-channel plug valve of the present invention;

[0021] Figure 2 for Figure 1 A schematic diagram of the internal cross-section of the valve core in the closed position according to the embodiment;

[0022] Figure 3 for Figure 2 A schematic diagram showing the valve core in the second working position;

[0023] Figure 4 for Figure 2 A schematic diagram showing the valve core in the third working position;

[0024] Figure 5 for Figure 1 Another cross-sectional view of the valve core in the first working position according to the embodiment;

[0025] Figure 6 This is a schematic diagram of one embodiment of the valve core. Detailed Implementation

[0026] 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.

[0027] 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.

[0028] In the description of this invention, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0029] 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.

[0030] Reference Figures 1 to 6A multi-channel plug valve of the present invention includes: a valve body 100, the valve body 100 having an air inlet chamber inside, and an air inlet channel 120, a pilot flame gas supply channel 130, a first gas supply channel 140, and a second gas supply channel 150 connected to the air inlet chamber on the side of the valve body 100; a valve core 200, rotatably disposed in the valve body 100 and located within the air inlet chamber, for connecting or isolating at least one of the pilot flame gas supply channel 130, the first gas supply channel 140, and the second gas supply channel 150 from the air inlet chamber; the pilot flame gas supply channel 130, the first gas supply channel 140, and the second gas supply channel 150 are circumferentially distributed around the rotation axis of the valve core 200, and the orifice diameters of the pilot flame gas supply channel 130, the first gas supply channel 140, and the second gas supply channel 150 increase sequentially; the valve core 200... The valve core 200 has a closed position, a first working position, a second working position, and a third working position arranged in a clockwise direction. When the valve core 200 is in the first working position, the propellant gas supply channel 130 is connected to the air intake chamber, and the first gas supply channel 140 and the second gas supply channel 150 are both isolated from the air intake chamber. When the valve core 200 is in the second working position, the propellant gas supply channel 130 and the first gas supply channel 140 are both connected to the air intake chamber, and the second gas supply channel 150 is isolated from the air intake chamber. When the valve core 200 is in the third working position, the propellant gas supply channel 130, the first gas supply channel 140, and the second gas supply channel 150 are all connected to the air intake chamber; or, the propellant gas supply channel 130 and the second gas supply channel 150 are both connected to the air intake chamber, and the first gas supply channel 140 is isolated from the air intake chamber.

[0031] The multi-channel plug valve with the above structure can connect at least one of the first gas supply channel 140 and the second gas supply channel 150, as well as the pilot flame gas supply channel 130, to the air intake channel 120 by rotating the valve core 200, thereby forming a pilot flame and flames of different power to adapt to different cooking methods. It eliminates the need to set up multiple single-channel plug valves to control the opening and closing of multiple channels, improves ease of use, reduces costs, and the range of firepower adjustment is much greater than that of using single-channel plug valves, making it suitable for the needs of commercial gas stoves such as those used in restaurants. It should be noted that when the valve core 200 is in the closed position, the pilot flame gas supply channel 130, the first gas supply channel 140, and the second gas supply channel 150 are all isolated from the air intake chamber. Since the orifice diameters of the pilot flame gas supply channel 130, the first gas supply channel 140, and the second gas supply channel 150 increase sequentially, when the valve core 200 is in the second working position, the pilot flame gas supply channel 130 and the first gas supply channel 140 are connected to the air intake chamber, thus forming a pilot flame and a ring of smaller flames. When the valve core 200 is in the third working position, it has two... There are two implementation methods. In the first implementation method, the gas supply channels 130, 140, and 150 are all connected to the air intake chamber, thereby forming a permanent flame, a ring of smaller flames, and a ring of larger flames to achieve maximum firepower. In the second implementation method, the gas supply channels 130 and 150 are all connected to the air intake chamber, while the first gas supply channel 140 is separated from the air intake chamber, thereby forming a permanent flame and a ring of larger flames, which meets the needs of various cooking methods of commercial gas stoves.

[0032] See Figure 1 and Figure 6In some embodiments of the present invention, the valve core 200 is provided with a first air outlet 210 and a second air outlet 220 spaced apart along its length. The first air outlet 210 connects the pilot flame gas supply channel 130 and the air inlet chamber. When the valve core 200 rotates, the second air outlet 220 can be connected to the first gas supply channel 140 or the second air outlet 220 can be connected to the second gas supply channel 150. It is understood that when the valve core 200 rotates to the second working position, the second air outlet 220 is connected to the first gas supply channel 140 to form a ring of smaller flames. When the valve core 200 rotates to the third working position, the second air outlet 220 is connected to the second gas supply channel 150 to form a ring of larger flames, thereby achieving the switching operation between two flame levels. During this period, the first air outlet 210 remains connected to the pilot flame gas supply channel 130 to form a pilot flame, preventing flameout during use. In addition, since the valve core 200 maintains the connection between the first air outlet 210 and the permanent flame gas supply channel 130 within a large rotation angle range, it needs to occupy a large space in the circumferential direction of the valve core 200. This results in insufficient space reserved for the second air outlet 220, the first gas supply channel 140, and the second gas supply channel 150. However, the first air outlet 210 and the second air outlet 220 being distributed at intervals along the length of the valve core 200 can solve the above problems and reduce the difficulty of production and processing.

[0033] See Figure 2 , Figure 3 , Figure 4 and Figure 6 In some embodiments of the present invention, the valve core 200 is provided with a third air outlet 230 on one side of the second air outlet 220. The third air outlet 230 and the second air outlet 220 are distributed circumferentially around the valve core 200. The valve core 200 can rotate to the position where the second air outlet 220 is connected to the second air supply channel 150 and the third air outlet 230 is connected to the first air supply channel 140. When the multi-channel plug valve with the above structure is used, when the valve core 200 rotates to the third working position, the second air outlet 220 is connected to the second air supply channel 150 and the third air outlet 230 is connected to the first air supply channel 140, thereby simultaneously forming a ring of smaller flames and a ring of larger flames, achieving superposition of firepower.

[0034] See Figure 2 and Figure 3 In some embodiments of the present invention, in order to further expand the range of firepower adjustment, the valve core 200 can rotate between a first operating position and a second operating position to adjust the overlap between the second air outlet 220 and the first air supply channel 140; see also Figure 3 and Figure 4The valve core 200 can rotate between a second working position and a third working position to adjust the overlap between the second gas outlet 220 and the second gas delivery channel 150, and to adjust the overlap between the third gas outlet 230 and the first gas delivery channel 140. It can be understood that when the valve core 200 is in the first working position, the second gas outlet 220 is not connected to the first gas delivery channel 140. When the valve core 200 is in the second working position, the second gas outlet 220 is directly opposite the first gas delivery channel 140, i.e., the overlap is highest, and the gas flow rate output from the first gas delivery channel 140 is maximum. As the valve core 200 moves from the first working position to the second working position, the overlap between the second gas outlet 220 and the first gas delivery channel 140 gradually increases. Similarly, as the valve core 200 moves from the second working position to the third working position, the overlap between the second gas outlet 220 and the second gas delivery channel 150 gradually decreases, while the overlap between the third gas outlet 230 and the first gas delivery channel 140 gradually increases. This continues until the valve core 200 rotates to the third working position, at which point the gas flow rate output from the first gas delivery channel 140 and the gas flow rate output from the second gas delivery channel 150 are at their maximum.

[0035] See Figures 2 to 4 as well as Figure 6 In some embodiments of the present invention, the valve core 200 is provided with a partition 240 between the second air outlet 220 and the third air outlet 230. The partition 240 is recessed inward toward the center of the valve core 200 to form a connecting groove 250 that connects the second air outlet 220 and the third air outlet 230. When the partition 240 is facing the first air supply channel 140, the third air outlet 230 is connected to the first air supply channel 140 through the connecting groove 250. It should be noted that during the process of the valve core 200 rotating from the second working position to the third working position, the overlap between the second air outlet 220 and the first gas delivery channel 140 will decrease, resulting in a sharp decrease in the gas flow rate output from the first gas delivery channel 140. At this time, the gas in the intake chamber can enter the first gas delivery channel 140 after passing through the third air outlet 230 and the connecting groove 250. Until the valve core 200 rotates to the third working position, the second air outlet 220 is directly opposite the second gas delivery channel 150, and the third air outlet 230 is directly opposite the first gas delivery channel 140.

[0036] In some embodiments of the present invention, in order to achieve the effect of gear adjustment, an angle positioning mechanism is provided between the valve core 200 and the valve body 100. The angle positioning mechanism can stabilize the valve core 200 in a second working position or a third working position. In this embodiment, the angle positioning mechanism includes a first positioning groove on the valve body 100 corresponding to the second working position and a second positioning groove corresponding to the third working position. Correspondingly, the end of the valve core 200 extending out of the valve body 100 is provided with a ball structure that can enter and exit the first positioning groove and the second positioning groove. The ball structure specifically includes a spring and a positioning ball, and the spring drives the positioning ball into the first positioning groove and the second positioning groove.

[0037] See Figure 6 In some embodiments of the present invention, the inlet of the second air supply channel 150 is an oblong through-hole, which extends along the length of the valve body 100. The shape and size of the second air outlet 220 are consistent with the oblong through-hole. The inlet of the first air supply channel 140 and the third air outlet 230 are both circular through-holes, and the diameter of the circular through-hole is consistent with the width of the oblong through-hole. It can be understood that when the second air outlet 220 is directly opposite the inlet of the first air supply channel 140, the opening of the first air supply channel 140 reaches its maximum because the cross-section of the oblong through-hole is larger than that of the circular through-hole. When the second air outlet 220 is directly opposite the inlet of the second air supply channel 150, the shape and size of the second air outlet 220 and the inlet of the second air supply channel 150 are completely matched, so that two different output flow rates can be achieved using a single second air outlet 220.

[0038] See Figure 5 and Figure 6 In some embodiments of the present invention, the first air outlet 210 includes an arc-shaped air guide groove 211 disposed around the outer peripheral wall of the valve core 200, and the bottom of the arc-shaped air guide groove 211 is provided with an exhaust hole 212 communicating with the air inlet chamber; when the valve core 200 is in the closed position, the propellant gas supply channel 130 is isolated from the arc-shaped air guide groove 211; when the valve core 200 is in the first working position, the second working position, and the third working position, the propellant gas supply channel 130 is connected to the arc-shaped air guide groove 211. The arc-shaped air guide groove 211 ensures that the valve core 200 maintains the communication between the propellant gas supply channel 130 and the air inlet chamber within a large rotation angle range.

[0039] See Figure 1In some embodiments of the present invention, the valve body 100 includes a cylindrical portion, the internal channel of which forms an air intake chamber. An air intake channel 120, a pilot flame gas supply channel 130, a first gas supply channel 140, and a second gas supply channel 150 are formed on the outer peripheral sidewall of the cylindrical portion. A valve core 200 is rotatably disposed at one end of the cylindrical portion, and a solenoid valve 300 is provided at the other end of the cylindrical portion. An opening is provided inside the cylindrical portion, and the solenoid valve 300 can close the opening to isolate the air intake channel 120 from the air intake chamber. Specifically, the valve core 200 generally has a push rod in the middle that can push the solenoid valve 300. The solenoid valve 300 is connected to a circuit with a thermocouple located in the area where the flame is located. When the flame is extinguished, the circuit is broken, the solenoid valve 300 loses its magnetic force, thereby closing the opening and blocking the air intake channel 120 to prevent gas leakage.

[0040] According to a second aspect of the present invention, a combustion device includes a multi-channel plug valve of any of the above-described technical solutions; the combustion device can simultaneously control the on / off state of multiple channels, thereby forming a permanent flame and flames of different power levels to adapt to different cooking methods, and improve ease of use and reduce costs.

[0041] 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 multi-channel plug valve, characterized in that, include: The valve body (100) has an air inlet chamber inside, and the side of the valve body (100) has an air inlet channel (120), a permanent flame gas supply channel (130), a first gas supply channel (140), and a second gas supply channel (150) connected to the air inlet chamber. The valve core (200) is rotatably disposed in the valve body (100) and located inside the air inlet chamber, and is used to connect or isolate at least one of the permanent flame gas supply channel (130), the first gas supply channel (140) and the second gas supply channel (150) from the air inlet chamber; The gas supply channel (130), the first gas supply channel (140), and the second gas supply channel (150) are arranged in a circular pattern around the rotation axis of the valve core (200), and the apertures of the gas supply channel (130), the first gas supply channel (140), and the second gas supply channel (150) increase sequentially. The valve core (200) has a closed position, a first working position, a second working position and a third working position arranged in a clockwise direction; When the valve core (200) is in the first working position, the gas supply channel (130) of the permanent flame is connected to the air inlet chamber, and the first gas supply channel (140) and the second gas supply channel (150) are both separated from the air inlet chamber; When the valve core (200) is in the second working position, the gas supply channel (130) and the first gas supply channel (140) are both connected to the air inlet chamber, and the second gas supply channel (150) is separated from the air inlet chamber. When the valve core (200) is in the third working position, the pilot flame gas supply channel (130), the first gas supply channel (140), and the second gas supply channel (150) are all connected to the air inlet chamber; or, the pilot flame gas supply channel (130) and the second gas supply channel (150) are all connected to the air inlet chamber, and the first gas supply channel (140) is isolated from the air inlet chamber. The valve core (200) is provided with a first air outlet (210) and a second air outlet (220) spaced apart along its length. The first air outlet (210) connects the permanent flame gas supply channel (130) and the air inlet chamber. The valve core (200) is provided with a third air outlet (230) on one side of the second air outlet (220). The valve core (200) can rotate between the first working position and the second working position to adjust the overlap between the second air outlet (220) and the first gas supply channel (140). The valve core (200) can rotate between the second working position and the third working position. The valve body (100) is rotated to adjust the overlap between the second air outlet (220) and the second air supply channel (150) and the third air outlet (230) and the first air supply channel (140); the inlet of the second air supply channel (150) is a waist-shaped through hole, which extends along the length of the valve body (100); the shape and size of the second air outlet (220) are consistent with the waist-shaped through hole; the inlet of the first air supply channel (140) and the third air outlet (230) are both circular through holes, and the diameter of the circular through hole is consistent with the width of the waist-shaped through hole.

2. A multi-channel plug valve according to claim 1, characterized in that, When the valve core (200) rotates, the second air outlet (220) can be connected to the first air supply channel (140) or the second air outlet (220) can be connected to the second air supply channel (150).

3. A multi-channel plug valve according to claim 2, characterized in that, The third air outlet (230) and the second air outlet (220) are circumferentially spaced around the valve core (200). The valve core (200) can rotate to the point where the second air outlet (220) is connected to the second air supply channel (150) and the third air outlet (230) is connected to the first air supply channel (140).

4. A multi-channel plug valve according to claim 3, characterized in that, The valve core (200) has a partition (240) between the second air outlet (220) and the third air outlet (230). The partition (240) is recessed inward toward the center of the valve core (200) to form a connecting groove (250) that connects the second air outlet (220) and the third air outlet (230). When the partition (240) is facing the first air supply channel (140), the third air outlet (230) is connected to the first air supply channel (140) through the connecting groove (250).

5. A multi-channel plug valve according to claim 3, characterized in that, An angle positioning mechanism is provided between the valve core (200) and the valve body (100), which can stabilize the valve core (200) in the second working position or the third working position.

6. A multi-channel plug valve according to claim 2, characterized in that, The first air outlet (210) includes an arc-shaped air guide groove (211) arranged around the outer peripheral wall of the valve core (200), and the bottom of the arc-shaped air guide groove (211) is provided with an exhaust hole (212) connected to the air inlet chamber; when the valve core (200) is in the closed position, the permanent flame gas supply channel (130) is isolated from the arc-shaped air guide groove (211); when the valve core (200) is in the first working position, the second working position and the third working position, the permanent flame gas supply channel (130) is connected to the arc-shaped air guide groove (211).

7. A multi-channel plug valve according to claim 1, characterized in that, The valve body (100) includes a cylindrical portion, the internal channel of the cylindrical portion forms the air intake chamber, the air intake channel (120), the permanent flame gas supply channel (130), the first gas supply channel (140) and the second gas supply channel (150) are formed on the outer peripheral sidewall of the cylindrical portion, the valve core (200) is rotatably disposed at one end of the cylindrical portion, and the other end of the cylindrical portion is provided with a solenoid valve (300), the inside of the cylindrical portion is provided with a switch port, and the solenoid valve (300) can close the switch port to isolate the air intake channel (120) and the air intake chamber.

8. A combustion device, characterized in that, Including the multi-channel plug valve according to any one of claims 1-7.

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