Gas distribution seat, combustor and gas stove

Abstract

The utility model belongs to the technical field of combustion, and particularly discloses a gas distribution seat, a combustor and a gas stove. The burner is provided with a center fire cover, a middle ring fire cover and an outer ring fire cover, the gas distribution seat comprises a middle ring gas distribution part and an outer ring gas distribution part, the middle ring gas distribution part is provided with a middle ring gas distribution cavity with the upper end and the lower end opened, and the outer ring gas distribution part is provided with an outer ring gas distribution channel separated from the middle ring gas distribution cavity; the air distribution seat further comprises an air entraining channel, at least the air outlet end of the air entraining channel is located in the middle ring air distribution cavity and is separated from the middle ring air distribution cavity, and the air inlet end of the air entraining channel is communicated with the outer ring air distribution channel. A first ignition seam is formed in the upper end of the middle ring fire cover in the radial direction in a penetrating mode, the first ignition seam and the air entraining channel are both separated from the middle ring air cavity, and the air entraining channel communicates with the first ignition seam. According to the utility model, through the fire leading channel arranged on the gas distribution seat, the fire can be spread between the central fire cover and the outer ring fire cover by crossing the fire cover, and the fire adjusting flexibility of the burner and the gas stove is improved.

Description

Technical Field

[0001] This utility model relates to the field of combustion technology, and in particular to a gas distribution seat, a burner, and a gas stove. Background Technology

[0002] Gas stoves are common kitchen appliances that heat cooking appliances by igniting and burning combustible gases. To meet the need for a wider range of firepower adjustment, gas stoves with multi-ring flame combustion functions are becoming increasingly widely used.

[0003] The burner is the core component of a gas stove, typically comprising a burner head, a gas distribution seat, and a burner cap assembly arranged sequentially from bottom to top. Existing technology provides a multi-ring burner, whose burner cap assembly includes a central burner cap, a middle ring burner cap, and an outer ring burner cap arranged sequentially from the inside out. The gas distribution seat has separate central gas distribution chambers, middle ring gas distribution chambers, and outer ring gas distribution chambers. The burner head has separate central gas supply channels, middle ring gas supply channels, and outer ring gas supply channels. The central gas supply channel supplies gas to the central burner cap through the central gas distribution chamber, the middle ring gas supply channel supplies gas to the middle ring burner cap through the middle ring gas distribution chamber, and the outer ring gas supply channel supplies gas to the outer ring burner cap through the outer ring gas distribution chamber.

[0004] Existing multi-ring burners feature an ignition needle between the central and middle ring burners. The middle ring burner has a first ignition slit, and the outer ring burner has a second ignition slit directly opposite the first. When the gas in the central burner is ignited, the flame is guided from the inside to the middle and outer ring burners along the first and second ignition slits. While this configuration allows for ignition and combustion at multiple burners, the flame propagates sequentially from the central burner orifice, through the middle ring burner orifice, to the outer ring burner orifice. This means that increasing the flame intensity results in a sequential increase in the flame intensity of the middle and outer ring burners, while decreasing it only results in a sequential decrease in the flame intensity of the outer ring burner, through the middle ring burner, and back to the central burner. Consequently, flame intensity adjustments for the middle and outer ring burners are essentially simultaneous, preventing independent adjustments and hindering effective improvement in flame intensity adjustment flexibility. Utility Model Content

[0005] One of the technical problems solved by this utility model is to provide a gas distribution seat that can effectively solve the problem that the firepower of the middle ring burner and the outer ring burner cannot be adjusted independently in existing multi-ring burners, thereby improving the firepower adjustment flexibility of multi-ring burners.

[0006] The second technical problem solved by this utility model is to provide a burner that can effectively solve the problem that the firepower of the middle ring burner and the outer ring burner cannot be adjusted independently in existing multi-ring burners, thereby improving the firepower adjustment flexibility of multi-ring burners.

[0007] The third technical problem solved by this utility model is to provide a gas stove that can effectively solve the problem that the firepower of the middle ring burner and the outer ring burner cannot be adjusted independently in existing multi-ring burners, thereby improving the firepower adjustment flexibility of multi-ring burners.

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

[0009] A gas distribution seat is applied to a multi-ring burner having a center burner cap, a middle ring burner cap, and an outer ring burner cap. The gas distribution seat includes a middle ring gas distribution section and an outer ring gas distribution section coaxially disposed outside the middle ring gas distribution section. The inner side of the middle ring gas distribution section has a central through hole for avoiding the center burner cap. The middle ring gas distribution section has a middle ring gas distribution chamber with open upper and lower ends for supplying gas to the middle ring burner cap. The outer ring gas distribution section has an outer ring gas distribution channel separated from the middle ring gas distribution chamber for supplying gas to the outer ring burner cap.

[0010] The gas distribution seat also includes a gas intake channel. At least the outlet end of the gas intake channel is located inside the middle ring gas distribution cavity and is separated from the middle ring gas distribution cavity. The outlet end of the gas intake channel is open. The inlet end of the gas intake channel is connected to the outer ring gas distribution channel.

[0011] Compared with the prior art, the gas distributor of this utility model has the following advantages: by setting a central through hole, a middle ring gas distributor, and an outer ring gas distributor, it is convenient to install the central burner cap, the middle ring burner cap, and the outer ring burner cap on the gas distributor, thereby facilitating the installation of multi-ring burner caps on multi-ring burners using this gas distributor; by setting an air intake channel on the gas distributor, which is separated from the middle ring gas distributor chamber but connected to the outer ring gas distributor channel, the mixed gas in the outer ring gas distributor channel can be partially... The gas enters the ignition channel; at the same time, since the outlet of the ignition channel is located inside the middle ring gas distribution chamber and is open at the top, and the upper port of the middle ring gas distribution chamber is usually set directly opposite the cavity of the middle ring burner, the ignition channel can supply gas to an independent area of ​​the middle ring burner when the middle ring gas distribution chamber does not supply gas to the middle ring burner. This, together with the ignition slit structure set in this independent area of ​​the middle ring burner, facilitates the conduction of flame between the central burner and the outer ring burner when there is no flame burning on the middle ring burner.

[0012] In one embodiment, the outer diameter of the air inlet port at the lower end of the middle ring air distribution chamber is smaller than the outer diameter of the air outlet port at the upper end of the middle ring air distribution chamber, and the air inlet end of the outer ring air distribution channel is located outside the air inlet port and below the air outlet port.

[0013] The air intake channel extends vertically from the air inlet end of the outer ring air distribution channel to the air outlet port. On the horizontal projection plane, the air intake channel is located within the projection range of the air outlet port.

[0014] In one embodiment, the middle ring air distribution section includes a first enclosure and a second enclosure that are spaced apart from each other. The second enclosure includes an upper ring, an inclined ring, and a lower ring that are connected from top to bottom. The inclined ring is inclined inward from top to bottom, and the air inlet of the outer ring air distribution channel is located below the inclined ring.

[0015] The middle ring air distribution chamber is provided with a partition wall, which together with the outer wall of the middle ring air distribution chamber forms the air intake channel. The lower end of the partition wall extends to the inclined ring portion, and the inclined ring portion is provided with an air intake port that connects the air intake channel and the outer ring air distribution channel.

[0016] In one embodiment, the partition wall includes a first sidewall and two second sidewalls connected to opposite sides of the first sidewall. The first sidewall is formed by extending upward from the lower ring portion, and the side of the second sidewall away from the first sidewall is connected to the upper ring portion.

[0017] In one embodiment, the outer ring air distribution channel includes an air inlet ring cavity located below the air outlet port, an outer ring air distribution cavity spaced apart outside the middle ring air distribution section, and a connecting channel connecting the air inlet ring cavity and the outer ring air distribution cavity. Multiple connecting channels are spaced apart along the circumference of the air distribution seat, and the air inlet ring cavity forms the air inlet end of the outer ring air distribution channel.

[0018] In one embodiment, the upper ring portion extends downward to form an extension ring portion, and the extension ring portion and the lower ring portion form the air intake ring cavity. The extension ring portion is provided with a communication port corresponding to the communication channel.

[0019] In one embodiment, the first enclosure includes a first ring, a second ring, and a third ring that are coaxially connected from top to bottom. The second ring extends inward at an angle from top to bottom. The air inlet is formed between the lower end of the first ring and the lower end of the lower ring. The air outlet is formed between the upper end of the second ring and the upper end of the upper ring.

[0020] In one embodiment, the outer ring air distribution section includes an intake cavity and an outer air distribution ring section arranged at intervals, and also includes a connecting bridge section connecting the outer air distribution ring section and the intake cavity. The outer air distribution ring section has an outer ring air distribution cavity, the connecting bridge section has a connecting channel, the intake cavity has an intake ring cavity, the intake ring cavity, the connecting channel and the outer ring air distribution cavity are sequentially connected and together form the outer ring air distribution channel, and multiple connecting bridge sections are arranged at intervals along the circumference of the air distribution seat. The outer air distribution ring section is used to install the outer ring flame cap.

[0021] The second technical problem mentioned above is solved by the following technical solution:

[0022] A burner, comprising:

[0023] The burner head has a central gas passage, a middle ring gas passage, and an outer ring gas passage that are separated.

[0024] The gas distribution seat is installed at the upper end of the burner head, and the middle ring gas passage is connected to the middle ring gas distribution chamber, and the outer ring gas passage is connected to the gas inlet end of the outer ring gas distribution passage.

[0025] The flame cap assembly includes a central flame cap with a central flame hole, a central ring flame cap with a central ring flame hole, and an outer ring flame cap with an outer ring flame hole.

[0026] The central burner cap is installed on the burner head and located in the central through hole, the central gas passage supplies gas to the central burner hole, and the outer ring burner cap is installed on the outer ring gas distribution section and the outer ring gas distribution channel supplies gas to the outer ring burner hole;

[0027] The middle ring flame cap has a middle ring gas chamber that communicates with the middle ring flame hole. The upper end of the middle ring flame cap is provided with a first ignition slit in the radial direction. The middle ring flame cap is installed on the middle ring gas distribution part and the middle ring gas distribution chamber communicates with the middle ring gas chamber. The first ignition slit and the gas ignition channel are both separated from the middle ring gas chamber and the gas ignition channel communicates with the first ignition slit.

[0028] Compared with the prior art, the burner of this utility model has the following advantages: by adopting the above-mentioned gas distribution seat and setting a first ignition slit on the middle ring burner cap that cooperates with the ignition channel, and by separating the first ignition slit and the ignition channel from the middle ring gas distribution chamber and the middle ring gas chamber, when the outer ring gas channel supplies gas to the outer ring burner cap and the central burner cap supplies gas to the central burner cap while the middle ring gas channel does not supply gas to the middle ring gas distribution chamber, part of the mixed gas in the outer ring gas distribution channel will flow to the first ignition slit through the ignition channel and will not flow to the middle ring gas chamber and the middle ring burner hole. This ensures that there is no flame combustion at the middle ring burner hole when the flame is transmitted between the central burner cap and the outer ring burner cap, thereby allowing the flame adjustment of the middle ring burner cap and the outer ring burner cap to be performed independently, improving the flexibility of the burner flame adjustment.

[0029] The third technical problem mentioned above is solved by the following technical solution:

[0030] A gas stove, including the burner described above.

[0031] Compared with the prior art, the gas stove of this utility model has the following advantages: by adopting the above-mentioned burner, it can meet the needs of multi-ring combustion while improving the flexibility of firepower adjustment. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of a burner provided in an embodiment of the present invention;

[0033] Figure 2 This is a top view of a burner provided in an embodiment of the present invention;

[0034] Figure 3 for Figure 2 Sectional view along the middle AA direction;

[0035] Figure 4 for Figure 2 Sectional view along the BB direction;

[0036] Figure 5 This is a schematic diagram of the structure of the gas distribution seat provided in an embodiment of the present utility model;

[0037] Figure 6 This is a cross-sectional view of a gas distribution seat provided in one embodiment of the present invention.

[0038] Figure 7 A cross-sectional view of the gas distribution seat provided in one embodiment of the present invention from another section.

[0039] Figure 8 This is a schematic diagram of the structure of the middle ring flame cap provided in an embodiment of the present invention;

[0040] Figure 9 This is a schematic diagram of the structure of a burner provided in another embodiment of the present invention;

[0041] Figure 10 This is a schematic diagram of the structure of the gas distribution seat provided in another embodiment of the present invention;

[0042] Figure 11 A cross-sectional view of a gas distribution seat provided in another embodiment of the present invention;

[0043] Figure 12 A cross-sectional view of another section of the gas distribution seat provided in another embodiment of the utility model;

[0044] Figure 13 This is a schematic diagram of the structure of the middle ring fire cover provided in another embodiment of the present invention.

[0045] Label Explanation:

[0046] 1. Air distributor seat; 11. Middle ring air distributor section; 111. First enclosure wall; 1111. First ring section; 1112. Second ring section; 1113. Third ring section; 112. Second enclosure wall; 1121. Upper ring section; 1122. Inclined ring section; 1123. Lower ring section; 113. Middle ring air distributor chamber; 1131. Inlet port; 1132. Outlet port; 12. Outer ring air distributor section; 121. Extension ring section; 122. Connecting bridge section; 123. Outer air distributor ring section; 1231. First outer ring; 1232. Second outer ring; 1233. Positioning edge; 124. Outer ring air distribution channel; 1241. Intake ring cavity; 1242. Connecting channel; 1243. Outer ring air distribution cavity; 13. Separating wall; 131. First side wall; 132. Second side wall; 133. Air intake channel; 14. Inner ring; 15. Air supply section; 151. Air supply channel; 16. Mounting ring; 17. Outer ring positioning section; 18. Middle ring positioning section;

[0047] 2. Flame cap assembly; 21. Central flame cap; 211. Central gas chamber; 212. Central flame hole; 22. Middle ring flame cap; 221. Middle ring gas chamber; 222. Middle ring flame hole; 223. Ignition enclosure; 224. Ignition channel; 225. First ignition seam; 226. Second ignition seam; 227. First mating part; 228. First ignition hole; 23. Outer ring flame cap; 231. Outer ring gas chamber; 232. Outer ring flame hole; 233. Outer ring ignition seam;

[0048] 3. Burner head; 31. Central gas passage; 32. Middle ring gas passage; 33. Outer ring gas passage; 34. Central vent pipe section. Detailed Implementation

[0049] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0050] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0051] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0052] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0053] Example 1

[0054] This embodiment provides a burner that can achieve multi-ring flame combustion while simplifying the burner's structure, reducing its processing cost, improving its processing efficiency, and enhancing the flexibility of its firepower adjustment.

[0055] Specifically, such as Figures 1 to 4 As shown, the burner includes a burner head 3, a gas distribution seat 1, and a burner cap assembly 2. The burner cap assembly 2 includes a central burner cap 21, a middle ring burner cap 22, and an outer ring burner cap 23, spaced apart from the inside out. The central burner cap 21 has a central gas chamber 211 and a central flame hole 212 connected together; the middle ring burner cap 22 has a middle ring gas chamber 221 and a middle ring flame hole 222 connected together; and the outer ring burner cap 23 has an outer ring gas chamber 231 and an outer ring flame hole 232 connected together. The burner head 3 has a separated central gas passage 31, a middle ring gas passage 32, and an outer ring gas passage 33. The central gas passage 31 supplies gas to the central gas chamber 211; the middle ring gas passage 32 supplies gas to the middle ring flame hole 222 through the gas distribution seat 1; and the outer ring gas passage 33 supplies gas to the outer ring flame hole 232 through the gas distribution seat 1.

[0056] Specifically, the gas distribution seat 1 includes a middle ring gas distribution section 11 and an outer ring gas distribution section 12 coaxially disposed outside the middle ring gas distribution section 11. The inner side of the middle ring gas distribution section 11 has a central through hole for avoiding the central burner cap 21. The middle ring gas distribution section 11 has a middle ring gas distribution chamber 113 with open upper and lower ends. The middle ring gas distribution chamber 113 is used to supply gas to the middle ring burner cap 22. The outer ring gas distribution section 12 has an outer ring gas distribution channel 124 separated from the middle ring gas distribution chamber 113. The outer ring gas distribution channel 124 is used to supply gas to the outer ring burner cap 23.

[0057] The burner head 3 has an upwardly protruding central vent pipe 34 that passes through the central through hole of the gas distribution seat 1. The central burner cap 21 is installed on the upper end of the central vent pipe 34, and the inner cavity of the central vent pipe 34 forms a partial central gas passage 31, thereby supplying gas to the central gas chamber 211. The central burner cap 21 is located inside the central ring gas distribution section 11. The middle ring burner cap 22 is installed on the middle ring gas distribution section 11, and the air inlet port 1131 at the lower end of the middle ring gas distribution chamber 113 is connected to the middle ring gas passage 32, and the air outlet port 1132 at the upper end of the middle ring gas distribution chamber 113 is connected to the middle ring gas chamber 221, so that the middle ring gas passage 32 supplies gas to the middle ring burner hole 222 in sequence through the middle ring gas distribution chamber 113 and the middle ring gas chamber 221; the outer ring burner cap 23 is installed on the outer ring gas distribution section 12, and the air inlet end of the outer ring gas distribution passage 124 is connected to the outer ring gas passage 33, and the air outlet end is connected to the outer ring gas chamber 231 of the outer ring burner cap 23, so that the outer ring gas passage 33 supplies gas to the outer ring burner hole 232 through the outer ring gas distribution passage 124.

[0058] In this embodiment, the gas distribution seat 1 further includes a gas intake channel 133. At least the outlet end of the gas intake channel 133 is located inside the middle ring gas distribution chamber 113 and is separated from the middle ring gas distribution chamber 113. The gas intake channel 133 is open, and the inlet end of the gas intake channel 133 is connected to the outer ring gas distribution channel 124. The upper end of the middle ring flame cap 22 is provided with a first ignition slit 225 extending radially. Both the first ignition slit 225 and the gas intake channel 133 are separated from the middle ring gas chamber 221, and the gas intake channel 133 is connected to the first ignition slit 225.

[0059] In this embodiment, when a mixture of air and fuel gas exists in the outer ring gas distribution channel 124, part of the mixture flows to the ignition channel 133, and then flows through the ignition channel 133 to the first ignition seam 225, and flows upward along the first ignition seam 225. Thus, when one of the central flame hole 212 and the outer ring flame hole 232 has an ignited flame, the flame will flow along the first ignition seam 225 to the other of the central flame hole 212 and the outer ring flame hole 232, thereby realizing the flame transfer across the flame cover. Since the first ignition slit 225 and the ignition channel 133 are separated from the middle ring gas distribution chamber 113 and the middle ring gas chamber 221, the mixed gas from the ignition channel 133 will not flow into the middle ring gas chamber 221. Thus, when the middle ring gas channel 32 does not supply gas to the middle ring gas distribution chamber 113, while the outer ring gas channel 33 supplies gas to the outer ring burner cap 23 and the central burner cap 21 supplies gas to the central burner cap 23, ignition and combustion are achieved at the central burner cap 21 and the outer ring burner cap 23, while there is no flame combustion at the middle ring burner cap 22. This allows the flame adjustment of the middle ring burner cap 22 and the outer ring burner cap 23 to be carried out independently, improving the flexibility of burner flame adjustment.

[0060] like Figures 3 to 7 As shown, to improve the ease of setting up the air intake channel 133, in one embodiment, the outer diameter of the air inlet port 1131 at the lower end of the middle ring air distribution chamber 113 is smaller than the outer diameter of the air outlet port 1132 at the upper end of the middle ring air distribution chamber 113. The air inlet end of the outer ring air distribution channel 124 is located outside the air inlet port 1131 and below the air outlet port 1132. This ensures that, on the horizontal projection plane, the air outlet port 1132 and the air inlet end of the outer ring air distribution channel 124 at least partially overlap. The air intake channel 133 extends vertically from the air inlet end of the outer ring air distribution channel 124 to the air outlet port 1132, and on the horizontal projection plane, the air intake channel 133 is always located within the projection range of the air outlet port 1132. This configuration facilitates the vertical extension of the air intake channel 133, thereby ensuring that the outlet of the air intake channel 133 is located inside the middle ring air distribution chamber 113, while simplifying the configuration of the air intake channel 133 and improving the connection convenience between the air intake channel 133 and the outer ring air distribution channel 124.

[0061] In one embodiment, the middle ring air distribution section 11 includes a first enclosure 111 and a second enclosure 112 that are coaxially spaced and spaced apart. The second enclosure 112 is spaced outside the first enclosure 111, and a middle ring air distribution chamber 113 is formed between the first enclosure 111 and the second enclosure 112. The second enclosure 112 includes an upper ring portion 1121, an inclined ring portion 1122, and a lower ring portion 1123 connected from top to bottom. The inclined ring portion 1122 is inclined inward from top to bottom, and the air inlet end of the outer ring air distribution channel 124 is located below the inclined ring portion 1122. By setting the inclined ring portion 1122, the upper ring portion 1121 is located inside the lower ring portion 1123. An air outlet port 1132 is formed between the upper end of the upper ring portion 1121 and the upper end of the first enclosure wall 111, and an air inlet port 1131 is formed between the lower end of the lower ring portion 1123 and the lower end of the first enclosure wall 111. This makes the outer diameter of the air inlet port 1131 smaller than the outer diameter of the air outlet port 1132, thereby improving the ease of setting the middle ring air distribution chamber 113.

[0062] The inner ring air distribution chamber 113 is provided with a partition wall 13. The partition wall 13 and the outer wall of the inner ring air distribution chamber 113 together form an air intake channel 133. The lower end of the partition wall 13 extends to the inclined ring portion 1122. The inclined ring portion 1122 is provided with an air intake port that connects the air intake channel 133 and the outer ring air distribution channel 124. By setting the partition wall 13 to form the air intake channel 133, the air intake channel 133 and the inner ring air distribution chamber 113 are separated. Furthermore, by setting the air intake port on the inclined ring portion 1122, it is convenient to connect the air intake channel 133 with the air inlet end of the outer ring air distribution channel 124, thereby improving the convenience of communication between the air intake channel 133 and the outer ring air distribution channel 124 and further simplifying the structure of the air distribution seat 1.

[0063] In one embodiment, the partition wall 13 includes a first sidewall 131 and two second sidewalls 132 connected to both ends of the first sidewall 131. The first sidewall 131 has a lower ring portion 1123 extending upward, and the side of the second sidewall 132 away from the first sidewall 131 is connected to the upper ring portion 1121. This arrangement facilitates the processing of the partition wall 13, thereby simplifying the structure of the air distribution seat 1 and reducing the processing difficulty of the air distribution seat 1.

[0064] To reduce the lower end size of the gas distributor 1, the outer ring gas distribution channel 124 includes an intake ring cavity 1241 located below the outlet port 1132, an outer ring gas distribution cavity 1243 spaced apart outside the middle ring gas distributor 11, and a connecting channel 1242 connecting the outer ring gas distribution cavity 1243 and the intake ring cavity 1241. Multiple connecting channels 1242 are spaced apart along the circumference of the gas distributor 1. The intake ring cavity 1241 forms the intake end of the outer ring gas distribution channel 124. The intake ring cavity 1241 facilitates communication between the outer ring gas distribution channel 124 and the outer ring gas passage 33, and also facilitates communication between the induced draft passage 133 and the outer ring gas distribution channel 124. The outer ring gas distribution cavity 1243 facilitates communication between the outer ring gas distribution channel 124 and the outer ring gas cavity 231 of the outer ring burner cap 23.

[0065] Specifically, the outer ring gas passage 33 includes an outer ring premixing chamber located at the upper end of the burner head 3. The outer ring premixing chamber is vertically aligned with and connected to the air inlet ring chamber 1241. The outer ring gas chamber 231 is vertically aligned with and connected to the outer ring gas distribution chamber 1243. This facilitates the connection between the outer ring gas distribution passage 124 and the outer ring gas chamber 231. At the same time, the connection passage 1242 helps to increase the distance between the outer ring gas distribution chamber 1243 and the middle ring gas distribution chamber 113, so that the outer ring burner cap 23 and the center burner cap 21 can be arranged at intervals.

[0066] Furthermore, the outer ring gas distribution section 12 includes an air inlet cavity, an outer gas distribution ring section 123 spaced around the outside of the air inlet cavity, and a connecting bridge section 122 connecting the outside of the air inlet cavity and the outer gas distribution ring section 123. Multiple connecting bridge sections 122 are spaced around the circumference of the gas distribution seat 1. The air inlet cavity forms an open-bottomed air inlet ring cavity 1241. The outer ring gas distribution cavity 1243 is located within the outer gas distribution ring section 123. A connecting channel 1242 is located within the connecting bridge section 122, connecting the air inlet ring cavity 1241 and the outer ring gas distribution cavity 1243. The outer ring burner cap 23 is installed on the outer gas distribution ring section 123. This configuration simplifies the structure of the gas distribution seat 1 when the outer ring gas distribution ring section 123 supports the outer ring burner cap 23. Simultaneously, it reduces the lower dimension of the gas distribution seat 1, thereby facilitating a reduction in the upper dimension of the burner head 3, reducing the weight of the burner, and lowering the cost of the burner.

[0067] In one embodiment, the connecting bridge portion 122 extends upward at an incline from the inside out to facilitate guiding the mixed gas entering from the intake ring cavity 1241 upward to the outer ring gas distribution cavity 1243. This ensures that the mixed gas exiting the outer ring gas distribution cavity 1243 has an upward velocity component, guaranteeing the flow velocity and direction of the mixed gas exiting the outer ring flame hole 232, thereby improving combustion stability. Simultaneously, the upward incline of the connecting bridge portion 122 facilitates the processing of the gas distribution seat 1 through molding, reducing the processing difficulty and cost of the gas distribution seat 1 and improving the ease of forming the gas distribution seat 1.

[0068] To further simplify the structure of the air distributor 1, an extension ring 121 extends downward from the upper ring portion 1121. The extension ring 121, the inclined ring portion 1122, and the lower ring portion 1123 cooperate to form an air intake cavity. The extension ring 121, the inclined ring 1122, and the lower ring portion 1123 together form an air intake annular cavity 1241. A connecting port is provided on the extension ring 121 corresponding to the position of the connecting channel 1242. Since the extension ring 121 is formed by extending downward from the upper ring portion 1121, the extension ring 121 and the upper ring portion 1121 together form a cylindrical structure, thereby making the shape of the air distributor 1 simpler, facilitating the processing of the air distributor 1, and reducing the difficulty of cleaning the air distributor 1. At the same time, this arrangement ensures that the air intake annular cavity 1241 is located entirely below the air outlet port 1132. In other embodiments,

[0069] The outer side of the upper ring portion 1121 can be connected to the connecting ring portion, which can protrude radially outward relative to the upper ring portion 1121. The connecting ring portion and the second enclosure wall 112 enclose each other to form an air intake ring cavity 1241, and the connecting bridge portion 122 is connected to the connecting ring portion.

[0070] In one embodiment, the inclined extension direction of the inclined ring portion 1122 is the same as the extension direction of the connecting bridge portion 122, which facilitates the flow of the mixed gas in the intake ring cavity 1241 to the connecting channel 1242, thereby improving the smoothness of the mixed gas flow.

[0071] In one embodiment, an inner ring portion 14 is coaxially connected to the inner side of the first enclosure 111. The inner hole of the inner ring portion 14 forms a central through hole to avoid the central burner cap 21, so that the central burner cap 21 can be directly installed on the burner head 3, and at the same time, it can enhance the overall structural strength and rigidity of the gas distribution seat 1.

[0072] Furthermore, the upper end of the burner head 3 also has an annular middle ring premixing chamber and an outer ring premixing chamber. The middle ring premixing chamber is located outside the outer ring premixing chamber and is part of the middle ring gas passage 32. The outer ring premixing chamber is part of the outer ring gas passage 33. The middle ring premixing chamber is directly connected to the air inlet port 1131, and the outer ring premixing chamber is directly connected to the air inlet ring chamber 1241.

[0073] Furthermore, the burner head 3 has a first ring wall, a second ring wall, and a third ring wall arranged coaxially and spaced apart. A middle ring premixing cavity is formed between the first ring wall and the second ring wall, and an outer ring premixing cavity is formed between the second ring wall and the third ring wall. The lower end of the first enclosure wall 111 is supported on the upper end of the first ring wall, the lower end of the second enclosure wall 112 is supported on the upper end of the second ring wall, and the lower end of the extension ring 121 is supported on the upper end of the third ring wall. Furthermore, the lower end of the inner ring 14 protrudes downward to provide a mounting ring 16, which abuts against the inner wall of the inner ring premixing cavity to cooperate in achieving radial mounting and positioning of the gas distribution seat 1 and the burner head 3.

[0074] It is worth noting that the structure of the burner head 3 can be set with reference to the structure of the burner head 3 in the existing three-ring burner. This is not the focus of this utility model and will not be elaborated here.

[0075] To reduce the manufacturing difficulty of the gas distributor 1, the outer gas distribution ring 123 includes a first outer ring 1231 and a second outer ring 1232 connected at an angle. The first outer ring 1231 extends along the axial direction of the gas distributor 1, and the lower end of the second outer ring 1232 is connected to the lower end of the first outer ring 1231. The second outer ring 1232 extends upward from the inside to the outside, so that an outer ring gas distribution cavity 1243 with an opening tilted outward is formed between the first outer ring 1231 and the second outer ring 1232. Furthermore, the tilt angle of the second outer ring 1232 relative to the axial direction of the gas distributor 1 is consistent with the tilt angle of the connecting channel 1242 relative to the axis, thereby improving the smoothness of the flow of the mixed gas from the connecting channel 1242 to the outer ring gas distribution cavity 1243.

[0076] To improve the ease of fitting between the outer gas distribution ring 123 and the outer ring burner cap 23, in one embodiment, the outer end of the second outer ring 1232 extends radially outward with a positioning edge 1233, and the lower end of the outer ring wall of the outer ring burner cap 23 rests on the positioning edge 1233, so that the positioning edge 1233 supports the outer ring wall of the outer ring burner cap 23. Furthermore, the positioning edge 1233 is lower than the upper end of the second outer ring 1232, and a vertical stepped surface is formed at the connection between the positioning edge 1233 and the second outer ring 1232, with the inner surface of the outer ring wall of the outer ring burner cap 23 abutting against the stepped surface.

[0077] In one embodiment, a gas supply section 15 is connected between the first enclosure 111 and the second enclosure 112. The gas supply section 15 has a gas supply channel 151 inside, with both ends of the gas supply channel 151 penetrating the first enclosure 111 and the second enclosure 112 respectively. The gas supply section 15 is circumferentially closed. The gas supply section 15 and the connecting bridge section 122 are offset from each other in the circumferential direction of the gas distribution seat 1. By setting the gas supply section 15, air outside the gas distribution seat 1 can enter the interior of the first enclosure 111 through the gas supply channel 151, thereby providing secondary air supply for the combustion of the flame at the central burner cap 21 and the middle ring burner cap 22, ensuring the completeness of combustion, improving combustion stability, and reducing harmful substances produced by combustion. Furthermore, by setting the gas supply section 15, the first enclosure 111 and the second enclosure 112 are connected to form a whole, ensuring the overall structural stability and reliability of the gas distribution seat 1.

[0078] To facilitate the processing of the air distribution seat 1, the outer port of the air supply part 15 is lower than the outer air distribution ring part 123. This facilitates the processing of the air supply part 15 by core pulling and avoids the outer ring air distribution part 12 from blocking the core pulling path of the air supply part 15, thereby improving the processing convenience of the air distribution seat 1.

[0079] In one embodiment, the width of the air supply channel 151 gradually increases from the inside to the outside along the circumference of the air distribution seat 1, thereby increasing the speed of the air flowing from the outside to the inside in the air supply channel 151. This increases the airflow velocity of the airflow outside the air distribution seat 1 as it enters the first enclosure 111 through the air supply channel 151, thereby increasing the amount of air flowing in the air supply channel 151.

[0080] Multiple air replenishment sections 15 are arranged at intervals along the circumference of the first enclosure wall 111 to increase the air replenishment volume while ensuring the overall structural strength and rigidity of the air distribution seat 1. Furthermore, the number of air replenishment sections 15 is the same as the number of connecting bridge sections 122, and the air replenishment sections 15 and connecting bridge sections 122 are staggered along the circumference of the second enclosure wall 112.

[0081] like Figure 4 and Figure 8 As shown, to achieve communication between the induced gas channel 133 and the first ignition seam 225, an ignition channel 224, separated from the inner ring gas chamber 221, is provided inside the inner ring gas chamber 221. The ignition channel 224 is connected to the first ignition seam 225, and the outlet end of the ignition channel 224 is directly opposite to the outlet end of the induced gas channel 133. This facilitates the separation of the ignition channel 224 from the outer ring gas chamber 231 and its connection with the first ignition seam 225.

[0082] To improve the ease of setting up the ignition channel 224, in one embodiment, an ignition enclosure 223 protrudes downward from the upper cavity wall of the middle annular gas cavity 221. The ignition enclosure 223 and the inner or outer cavity wall of the middle annular gas cavity 221 enclose the ignition channel 224. The ignition enclosure 223 and the partition wall 13 are aligned vertically to ensure that the gas duct 133 and the ignition channel 224 are aligned and sealed.

[0083] A first ignition hole 228 is provided on the middle ring flame cap 22. The first end of the first ignition hole 228 penetrates the inner wall of the middle ring flame cap 22, and the second end of the first ignition hole 228 communicates with the ignition channel 224. The first ignition hole 228 is separated from the middle ring gas chamber 221. Alternatively, a second ignition hole is provided on the middle ring flame cap 22. The first end of the second ignition hole communicates with the ignition channel 224, and the second end of the second ignition hole penetrates the outer wall of the middle ring flame cap 22. The second ignition hole is separated from the middle ring gas chamber 221. By providing the first ignition hole 228, the conduction of flame between the central flame hole 212 and the first ignition slot 225 is facilitated. By providing the second ignition hole, the conduction of flame between the outer ring flame hole 232 and the first ignition slot 225 is facilitated, thereby improving the stability and reliability of flame conduction.

[0084] In one embodiment, the outer ring flame hole 232 is disposed on the outer periphery of the outer ring flame cap 23. In order to better guide the conduction of flame between the central flame hole 212 and the outer ring flame hole 232, the upper end of the outer ring flame cap 23 is provided with an outer ring ignition slit 233. The outer ring ignition slit 233 extends radially along the outer ring flame cap 23, and the inner end of the outer ring ignition slit 233 penetrates the inner sidewall of the outer ring flame cap 23. The outer end of the outer ring ignition slit 233 extends to the outer ring flame hole 232. The outer ring ignition slit 233 and the first ignition slit 225 are arranged opposite each other in the radial direction of the flame cap assembly 2.

[0085] By setting the outer ring flame hole 232 on the outer wall of the outer ring flame cap 23, the flame flowing out of the outer ring flame hole 232 can flow upward and outward, increasing the flame coverage of the flame cap assembly 2, and avoiding mutual interference between the flames at the middle ring flame hole 222 and the outer ring flame hole 232, thus improving combustion stability. By setting the outer ring ignition slit 233 on the outer ring flame cap 23 opposite to the first ignition slit 225, the flame on the central flame cap 21 can be reliably guided to the outer ring flame cap 23 after being guided along the first ignition slit 225 to the outside of the middle ring flame cap 22, and then to the outer ring flame hole 232 of the outer ring flame cap 23, thus improving the reliability of ignition.

[0086] In one embodiment, the central ring flame hole 222 is disposed on the outer ring wall of the central ring flame cap 22. A second ignition slit 226 is provided at the upper end of the central ring flame cap 22, communicating with the central ring gas chamber 221. The first end of the second ignition slit 226 penetrates the inner ring wall of the central ring flame cap 22, and the second end extends to the central ring flame hole 222. The second ignition slit 226 and the first ignition slit 225 are spaced apart circumferentially from each other in the central ring flame cap 22. By disposing of the central ring flame hole 222 on the outer ring wall of the central ring flame cap 22, when the first gas valve is opened, the flame formed at the central ring flame cap 22 can be positioned outwards to heat the outer bottom of the cooking appliance. Furthermore, it better avoids interference between the flame at the central flame hole 212 and the flame at the central ring flame cap 22, improving combustion stability.

[0087] This embodiment also provides a gas stove, including the burner described above. By using the burner, the requirements for multi-ring combustion can be met while improving the flexibility of firepower adjustment.

[0088] The gas stove includes a first gas valve and a second gas valve. The first gas valve has two first gas outlets, which are respectively connected to the central gas channel 31 and the middle ring gas channel 32. The first gas valve controls the gas flow and on / off of the two first gas outlets. The second gas valve has two second gas outlets, which are respectively connected to the central gas channel 31 and the outer ring gas channel 33. The second gas valve controls the gas flow and on / off of the two second gas outlets. Both the first and second gas valves are communicatively connected to a controller.

[0089] The above configuration ensures that gas is supplied to the central gas passage 31 regardless of whether the first or second gas valve is open, meaning that a flame will burn at the central burner hole 212. This results in the burner having a central flame and an outer ring hole when the first and / or second gas valves are open, improving the uniformity of heating the cooking appliances and enhancing the user experience of the gas stove. At the same time, this configuration reduces the number of gas valves required, and the first and second gas valves can meet the control requirements using conventional gas valve structures, reducing the cost of improving the gas stove.

[0090] Example 2

[0091] This embodiment provides a gas distribution seat 1 and a burner containing the gas distribution seat 1. The basic structure of the burner provided in this embodiment is the same as that in the above embodiment, with only some differences in the configuration.

[0092] like Figures 9 to 12As shown, to avoid the lower port width of the middle ring air distribution cavity 113 being too small and affecting air intake, in this embodiment, the first enclosure 111 includes a first ring portion 1111, a second ring portion 1112, and a third ring portion 1113 coaxially connected from top to bottom. The first ring portion 1111 and the third ring portion 1113 are both arranged along the axial direction of the air distribution seat 1, and the second ring portion 1112 is inclined inward from top to bottom, so that the outer diameter of the first ring portion 1111 is larger than the outer diameter of the third ring portion 1113. This causes the lower port of the middle ring air distribution cavity 113 to be offset inward relative to the upper port. This increases the radial width of the lower port of the middle ring air distribution cavity 113 while keeping the inner and outer diameters of the upper port of the middle ring air distribution cavity 113 unchanged, thereby improving the smoothness of the mixed airflow in the middle ring air distribution cavity 113. At the same time, this structural arrangement of the first enclosure 111 also facilitates the drafting process of the first enclosure 111.

[0093] The third ring portion 1113 and the inclined ring portion 1122 are arranged opposite to each other and spaced apart. That is, the middle ring air distribution chamber 113 includes a first chamber located between the vertical ring portion and the third ring portion 1113, a second chamber located between the inclined ring portion 1122 and the second ring portion 1112, and a third chamber located between the second enclosure 112 and the first ring portion 1111. The second chamber is inclined to guide the mixed airflow in the first chamber to flow to the third chamber.

[0094] In one embodiment, the radial width w1 of the air inlet port 1131 of the middle ring air distribution chamber 113 is smaller than the radial width w2 of the air outlet port 1132 of the middle ring air distribution chamber 113, so as to avoid the third ring portion 1113 moving too close inward and affecting the installation of the inner structure of the first enclosure wall 111. Preferably, 0.6w2≤w1<w2.

[0095] To further improve the processing convenience of the air distribution seat 1, in this embodiment, the air replenishment part 15 is inclined downward from the inside to the outside, which facilitates the core-pulling setting of the air replenishment part 15, reduces the processing difficulty of the air replenishment part 15, and thus improves the processing efficiency of the air distribution seat 1. At the same time, the inclined setting of the air replenishment part 15 from the inside to the outside is more conducive to reducing the size of the air distribution seat 1. Furthermore, the air replenishment channel 151 is inclined upward from the outside to the inside, so that the setting of the air replenishment channel 151 is more matched with the airflow direction, improving the smoothness of air replenishment. Furthermore, the inner end of the air replenishment channel 151 is located on the upper side of the inner ring part 14 to prevent the air replenishment channel 151 from entering the first enclosure wall 111 and being unable to flow smoothly upward due to the obstruction of the inner ring part 14.

[0096] like Figure 8 , Figure 11 and Figure 13As shown, in one embodiment, a middle ring positioning part 18 is provided at the upper end of the first enclosure 111 or the upper end of the second enclosure 112. The middle ring positioning part 18 is used to position the middle ring burner cap 22 in the circumferential upward installation position of the gas distributor 1. An outer ring positioning part 17 is provided on the outer ring gas distributor 12 to position the outer ring burner cap 23 in the circumferential upward installation position of the gas distributor 1. This ensures the reliability of the installation position of the middle ring burner cap 22 and the outer ring burner cap 23 in the circumferential upward installation position of the gas distributor 1, and helps to ensure that the first ignition seam 225 and the outer ring ignition seam 233 are radially aligned with each other in the burner cap assembly 2.

[0097] Specifically, the middle ring flame cover 22 is provided with a first mating part 227, which is inserted and positioned with the middle ring positioning part 18; the outer ring flame cover 23 is provided with a second mating part, which is inserted and positioned with the outer ring positioning part 17.

[0098] The positioning structure for the flame cap and the gas distribution seat 1 can be set with reference to existing technology, which is not the focus of this utility model and will not be described in detail here.

[0099] This embodiment also provides a gas stove, including the burner described above. By using the burner, the requirements for multi-ring combustion can be met while improving the flexibility of firepower adjustment.

[0100] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0101] The specific embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A gas distribution seat, applied to a multi-ring burner having a central burner cap (21), a middle ring burner cap (22), and an outer ring burner cap (23), characterized in that, The gas distribution seat includes a middle ring gas distribution part (11) and an outer ring gas distribution part (12) coaxially disposed outside the middle ring gas distribution part (11). The inner side of the middle ring gas distribution part (11) has a central through hole for avoiding the central burner cap (21). The middle ring gas distribution part (11) has a middle ring gas distribution chamber (113) with open upper and lower ends. The middle ring gas distribution chamber (113) is used to supply gas to the middle ring burner cap (22). The outer ring gas distribution part (12) has an outer ring gas distribution channel (124) separated from the middle ring gas distribution chamber (113). The outer ring gas distribution channel (124) is used to supply gas to the outer ring burner cap (23). The gas distribution seat also includes an air intake channel (133), at least the air outlet of the air intake channel (133) is located inside the middle ring gas distribution cavity (113) and is separated from the middle ring gas distribution cavity (113), and the air outlet of the air intake channel (133) is open, and the air inlet of the air intake channel (133) is connected to the outer ring gas distribution channel (124).

2. The gas distribution seat according to claim 1, characterized in that, The outer diameter of the air inlet port (1131) at the lower end of the middle ring air distribution chamber (113) is smaller than the outer diameter of the air outlet port (1132) at the upper end of the middle ring air distribution chamber (113). The air inlet end of the outer ring air distribution channel (124) is located outside the air inlet port (1131) and below the air outlet port (1132). The air intake channel (133) extends vertically from the air inlet end of the outer ring air distribution channel (124) to the air outlet port (1132). On the horizontal projection plane, the air intake channel (133) is located within the projection range of the air outlet port (1132).

3. The gas distributor according to claim 2, characterized in that, The middle ring air distribution section (11) includes a first enclosure (111) and a second enclosure (112) spaced apart from each other. The second enclosure (112) includes an upper ring (1121), an inclined ring (1122) and a lower ring (1123) connected from top to bottom. The inclined ring (1122) is inclined inward from top to bottom. The air inlet end of the outer ring air distribution channel (124) is located below the inclined ring (1122). The middle ring gas distribution chamber (113) is provided with a partition wall (13), and the partition wall (13) and the outer wall of the middle ring gas distribution chamber (113) together form the air intake channel (133). The lower end of the partition wall (13) extends to the inclined ring portion (1122), and the inclined ring portion (1122) is provided with an air intake port that connects the air intake channel (133) and the outer ring gas distribution channel (124).

4. The gas distributor according to claim 3, characterized in that, The partition wall (13) includes a first side wall (131) and two second side walls (132) connected to opposite sides of the first side wall (131). The first side wall (131) is formed by extending upward from the lower ring portion (1123), and the side of the second side wall (132) away from the first side wall (131) is connected to the upper ring portion (1121).

5. The gas distributor according to claim 3, characterized in that, The outer ring air distribution channel (124) includes an air inlet ring cavity (1241) located below the air outlet port (1132), an outer ring air distribution cavity (1243) spaced apart outside the middle ring air distribution section (11), and a connecting channel (1242) connecting the air inlet ring cavity (1241) and the outer ring air distribution cavity (1243). Multiple connecting channels (1242) are spaced apart along the circumference of the air distribution seat. The air inlet ring cavity (1241) forms the air inlet end of the outer ring air distribution channel (124).

6. The gas distributor according to claim 5, characterized in that, The upper ring portion (1121) extends downward to form an extension ring portion (121), and the air intake ring cavity (1241) is formed between the extension ring portion (121) and the lower ring portion (1123). The extension ring portion (121) is provided with a communication port corresponding to the communication channel (1242).

7. The gas distributor according to claim 3, characterized in that, The first enclosure (111) includes a first ring portion (1111), a second ring portion (1112), and a third ring portion (1113) that are coaxially connected from top to bottom. The second ring portion (1112) extends inward at an angle from top to bottom. The lower end of the first ring portion (1111) and the lower end of the lower ring portion (1123) form the air inlet port (1131). The upper end of the second ring portion (1112) and the upper end of the upper ring portion (1121) form the air outlet port (1132).

8. The gas distribution seat according to any one of claims 1-7, characterized in that, The outer ring air distribution section (12) includes an air intake chamber and an outer air distribution ring section (123) spaced apart from each other, and also includes a connecting bridge section (122) connecting the outer air distribution ring section (123) and the air intake chamber. The outer air distribution ring section (123) has an outer ring air distribution chamber (1243), the connecting bridge section (122) has a connecting channel (1242), the air intake chamber has an air intake ring chamber (1241), the air intake ring chamber (1241), the connecting channel (1242) and the outer ring air distribution chamber (1243) are connected in sequence and together form the outer ring air distribution channel (124). The connecting bridge section (122) is provided with multiple sections spaced apart along the circumference of the air distribution seat. The outer air distribution ring section (123) is used to install the outer ring flame cap (23).

9. A burner, characterized in that, include: The burner head (3) has a central gas passage (31), a middle ring gas passage (32) and an outer ring gas passage (33) that are separated. The gas distribution seat as described in any one of claims 1-8 is installed at the upper end of the burner head (3), and the middle ring gas passage (32) is connected to the middle ring gas distribution chamber (113), and the outer ring gas passage (33) is connected to the gas inlet end of the outer ring gas distribution passage (124); The flame cap assembly (2) includes a central flame cap (21) having a central flame hole (212), a central ring flame cap (22) having a central ring flame hole (222), and an outer ring flame cap (23) having an outer ring flame hole (232); The central burner cap (21) is installed on the burner head (3) and located in the central through hole. The central gas passage (31) supplies gas to the central burner hole (212). The outer ring burner cap (23) is installed on the outer ring gas distribution section (12) and the outer ring gas distribution passage (124) supplies gas to the outer ring burner hole (232). The middle ring flame cap (22) has a middle ring gas chamber (221) communicating with the middle ring flame hole (222). The upper end of the middle ring flame cap (22) is provided with a first ignition slit (225) through it in the radial direction. The middle ring flame cap (22) is installed on the middle ring gas distribution part (11) and the middle ring gas distribution chamber (113) is connected to the middle ring gas chamber (221). The first ignition slit (225) and the gas ignition channel (133) are both separated from the middle ring gas chamber (221) and the gas ignition channel (133) is connected to the first ignition slit (225).

10. A gas stove, characterized in that, Includes the burner as described in claim 9.

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