A three-ring fire gas distribution plate and burner

Abstract

This application relates to the field of gas stove burners, and more particularly to a three-ring flame distribution plate and burner. The distribution plate includes an inner ring hole for accommodating the central gas outlet of the burner head, multiple outer ring air inlet channels disposed on the outer ring side of the inner ring hole, an outer ring gas groove disposed on the outer ring side of the outer ring air inlet channels, multiple connecting channels for connecting the outer ring gas groove and the multiple outer ring air inlet channels, multiple inner ring air inlet channels disposed between the outer ring gas groove and the outer ring air inlet channels, and multiple secondary air inlet holes disposed on the side wall of the inner ring hole. The inner ring hole, outer ring gas groove, inner ring air inlet channels, and outer ring air inlet channels are concentrically arranged. The burner includes the distribution plate and a burner head adapted to the distribution plate. This application has the effect of diverting the inner ring gas of the burner head to the outer ring of the flame distributor for combustion to form an outer ring flame, improving thermal efficiency while reducing the size of the burner head, and has the characteristics of easy processing and good sealing performance, thereby reducing the overall cost of the burner.

Description

Technical Field

[0001] This application relates to the field of gas stove burners, and in particular to a three-ring fire distribution plate and burner. Background Technology

[0002] Currently, high-power burners on the market are divided into two-ring and three-ring types. The three-ring type includes a center flame, an inner ring flame, and an outer ring flame. Three-ring burners typically use three injectors to supply the combustion gas required for combustion. They are superior to two-ring burners in terms of flame intensity adjustment. When users need to reduce the flame intensity of the outer ring flame, they can adjust the flame intensity of the inner and outer ring flames using a knob.

[0003] To ensure the thermal efficiency of the burner, there are certain requirements for the heat exchange area between the pot bottom and the flame. This limits the size of the burner. For example, as shown in the novel three-ring burner disclosed in Chinese Patent No. CN111043596A, the three-ring burner has a large burner size because the air inlet channels of the outer ring fire, inner ring fire and center fire of the burner are directly connected to the three air outlet channels of the three-ring burner head. This results in an excessively high overall cost of the burner.

[0004] In addition, in order to reduce the size of the burner head and lower the overall cost of the burner, some products on the market have concentrated the flame outlets of the outer and inner ring flames on the same burner cap. Although this design can reduce the overall cost of the burner to a certain extent, it also has the problem of the flame outlets being too concentrated, resulting in low thermal efficiency. Summary of the Invention

[0005] To address the shortcomings of the aforementioned technologies, this application provides a three-ring fire distribution plate and a burner.

[0006] The technical solution provided in this application for a three-ring fire distribution plate and burner is as follows:

[0007] In a first aspect, this application provides a three-ring fire distribution plate, including an inner ring hole for accommodating the central gas outlet of the burner head, a plurality of outer ring air inlet channels disposed on the outer ring side of the inner ring hole, an outer ring gas groove disposed on the outer ring side of the outer ring air inlet channels, a plurality of connecting channels for connecting the outer ring gas groove and the plurality of outer ring air inlet channels, a plurality of inner ring air inlet channels disposed between the outer ring gas groove and the plurality of outer ring air inlet channels, and a plurality of secondary air inlet holes disposed on the side wall of the inner ring hole and connected to the inner ring hole, wherein the inner ring hole, the outer ring gas groove, the inner ring air inlet channels and the outer ring air inlet channels are concentrically arranged.

[0008] Preferably, the air distribution plate includes an air distribution plate body and a sealing cover that covers the air distribution plate body. The outer ring air intake channel and the connecting channel are both formed by the air distribution plate body and the sealing cover being detachably connected and covered.

[0009] Preferably, the gas distribution plate body includes a first inner ring body, a first outer ring body concentrically arranged with the first inner ring body, a plurality of first connecting plates for connecting the first outer ring body and the first inner ring body, and a plurality of connecting parts disposed between the first outer ring body and the first inner ring body. The plurality of first connecting plates are evenly distributed on the outer ring side of the first inner ring body, and the plurality of connecting parts are respectively disposed between two adjacent first connecting plates. The connecting part includes a first arc plate, a second arc plate, and a third arc plate concentrically arranged with the first inner ring body. An outer ring air intake channel for gas flow is formed between the first arc plate and the first inner ring body, and an inner ring air intake channel for gas flow is formed between the first arc plate and the second arc plate.

[0010] Preferably, the sealing cover includes a second inner ring, a second outer ring concentrically arranged with the second inner ring, a middle ring concentrically arranged with the second inner ring and located between the second outer ring and the second inner ring, and a plurality of second connecting plates for connecting the second inner ring, the second outer ring and the middle ring. The second outer ring can be covered on a third arc-shaped plate, the middle ring can be covered on a second arc-shaped plate, the second connecting plates can be covered on a first connecting plate to form a communicating channel, the second inner ring can be covered on the first inner ring and the first arc-shaped plate to communicate multiple outer ring air intake channels, and an inner ring flame cap is covered on the middle ring to communicate multiple inner ring air intake channels.

[0011] Preferably, the plurality of secondary air intake holes are disposed on the side wall of the first inner ring body, and air can flow into the inner ring hole through the secondary air intake holes.

[0012] Preferably, the cross-sectional shape of the connecting channel is rectangular, and a total of four connecting channels are provided.

[0013] Preferably, the first outer ring body is covered with an outer ring flame cap to form a channel for the flow of outer ring gas. The outer ring flame cap can be formed separately from the sealing cap or integrally formed.

[0014] Preferably, the gas distribution plate body is fixedly connected to a first boss at the connection between the connecting channel and the outer ring gas tank, and a second boss matching the first boss is provided on one side of the second connecting plate facing the gas distribution plate body. The first boss can be threadedly connected to the second boss through a threaded connector.

[0015] Secondly, this application provides a three-ring burner, including the flame distributor described in any of the above claims.

[0016] Preferably, the burner further includes a burner head, on which an inner ring air outlet groove and an outer ring air outlet groove are concentrically arranged. The upper surfaces of the inner ring air outlet groove and the outer ring air outlet groove are flush. The end face of the gas distribution plate body away from the sealing cover is provided with a mounting slot that matches the outer wall of the outer ring air outlet groove. When the gas distribution plate body is installed on the burner head, the outer ring air outlet groove is engaged in the mounting slot. The outer ring air outlet groove is connected to multiple inner ring air inlet channels, and the inner ring air outlet groove is connected to multiple outer ring air inlet channels.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] 1. The inner ring gas of the burner head can enter the outer ring gas groove through multiple outer ring air intake channels and connecting channels, and then be fully combusted through the outer ring burner to form an outer ring fire. The outer ring gas of the burner head can enter the inner ring burner through the inner ring air intake channel and be fully combusted to form an inner ring fire. This allows the volume of the burner head to be reduced while ensuring a certain heat exchange area, thereby reducing the overall cost of the burner.

[0019] 2. By setting up a structure in which the gas distribution plate body, sealing cover, outer ring flame cap and inner ring flame cap cooperate with each other, the flame distributor can be assembled from multiple parts, reducing the manufacturing difficulty of the flame distributor and making it easier to process;

[0020] 3. By setting secondary air inlets, the air intake of the burner can be increased, further enhancing the thermal efficiency of the burner;

[0021] 4. By setting up a structure in which the mounting slot, inner ring air outlet groove and outer ring air outlet groove cooperate with each other, the gas distribution plate body can achieve automatic alignment between the inner ring air outlet groove and the outer ring air inlet channel, and between the outer ring air outlet groove and the inner ring air inlet channel when it is installed on the burner head. This can improve the coaxiality of the burner head and the flame distributor, facilitate the sealing operation between the burner head and the flame distributor, and reduce the installation difficulty. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the burner in an embodiment of this application.

[0023] Figure 2 This is a schematic diagram of the structure of the air distribution plate body and the sealing cover in an embodiment of this application.

[0024] Figure 3 This is a structural schematic diagram of the air distribution plate body and the sealing cover from another perspective in an embodiment of this application.

[0025] Figure 4 This is a schematic diagram of the structure of the gas distribution plate body in an embodiment of this application.

[0026] Figure 5This is a schematic diagram of the structure of the sealing cover (not integrally formed with the outer ring flame cover) in an embodiment of this application.

[0027] Figure 6 This is a schematic diagram of the structure of the burner head in an embodiment of this application.

[0028] Explanation of reference numerals in the attached drawings: 1. Burner head; 11. Inner ring gas outlet groove; 12. Outer ring gas outlet groove; 2. Inner ring hole; 3. Outer ring air inlet channel; 4. Connecting channel; 5. Outer ring gas groove; 6. Inner ring air inlet channel; 7. Outer ring burner cap; 8. Inner ring burner cap; 9. Gas distribution plate body; 91. First inner ring body; 92. First outer ring body; 93. First connecting plate; 94. Connecting part; 941. First arc-shaped plate; 942. Second arc-shaped plate; 943. Third arc-shaped plate; 10. Sealing cover; 101. Second inner ring body; 102. Second outer ring body; 103. Middle ring body; 104. Second connecting plate; 13. Secondary air inlet through hole; 14. First boss; 15. Second boss; 16. Mounting slot. Detailed Implementation

[0029] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0030] In the description of this invention, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0031] 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.

[0032] In this invention, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integrally formed connection; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. 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.

[0033] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0034] This application discloses a three-ring fire distribution plate and a burner. (Refer to...) Figures 1 to 3 The three-ring gas distribution plate includes an inner ring hole 2 for accommodating the central gas outlet of the burner head 1, multiple outer ring air inlet channels 3 disposed on the outer ring side of the inner ring hole 2, an outer ring gas groove 5 disposed on the outer ring side of the outer ring air inlet channel 3, multiple connecting channels 4 for connecting the outer ring gas groove 5 with the multiple outer ring air inlet channels 3, multiple inner ring air inlet channels 6 disposed between the outer ring gas groove 5 and the multiple outer ring air inlet channels 3, and multiple secondary air inlet holes 13 disposed on the side wall of the inner ring hole 2 and connected to the inner ring hole 2. The inner ring hole 2, the outer ring gas groove 5, the inner ring air inlet channel 6 and the outer ring air inlet channel 3 are concentrically arranged.

[0035] In this embodiment of the invention, four outer ring air inlet channels 3 and four inner ring air inlet channels 6 are provided. Both outer ring air inlet channels 3 and inner ring air inlet channels 6 are arc-shaped, and the radii of the four outer ring air inlet channels 3 and the four inner ring air inlet channels 6 are equal. Meanwhile, the cross-sectional area of ​​the connecting channel 4 is larger than the cross-sectional area of ​​the outer ring gas groove 5. Therefore, the inner ring gas of the burner head 1 can enter the outer ring gas groove 5 through multiple outer ring air inlet channels 3 and connecting channels 4. Furthermore, by covering the outer ring gas groove with an outer ring flame cap 7, the inner ring gas of the burner head 1 can be fully combusted through the outer ring flame cap 7 to form an outer ring flame. Alternatively, an inner ring flame cap 8 can be covered with multiple inner ring air inlet channels 6, allowing the outer ring gas of the burner head 1 to enter the inner ring flame cap 8 through the inner ring air inlet channels 6 for full combustion to form an inner ring flame. This allows for a significant reduction in the volume of the burner head 1 while maintaining a constant heat exchange area, thereby reducing the overall cost of the burner.

[0036] For details, please refer to Figures 2 to 4The outer ring air intake channel 3 and the connecting channel 4 can be detachably connected and covered by the air distribution plate body 9 and the sealing cover 10. Further disassembling the fire distributor into the air distribution plate body 9 and the sealing cover 10 can reduce the casting difficulty of the air distribution plate and facilitate the production and manufacturing of the fire distributor. The gas distribution plate body 9 includes a first inner ring body 91, a first outer ring body 92 concentrically arranged with the first inner ring body 91, a plurality of first connecting plates 93 for connecting the first outer ring body 92 and the first inner ring body 91, and a plurality of connecting portions 94 disposed between the first outer ring body 92 and the first inner ring body 91. The plurality of first connecting plates 93 are evenly distributed on the outer ring side of the first inner ring body 91, and the plurality of connecting portions 94 are respectively disposed between two adjacent first connecting plates 93. The connecting portion 94 includes a first arc plate 941, a second arc plate 942 and a third arc plate 943 concentrically arranged with the first inner ring body 91. An outer ring air intake channel 3 for gas flow is formed between the first arc plate 941 and the first inner ring body 91, and an inner ring air intake channel 6 for gas flow is formed between the first arc plate 941 and the second arc plate 942.

[0037] In this embodiment, four first connecting plates 93 are provided, and the cross-sectional shape of the first connecting plates 93 is set to rectangular. In other embodiments, three, five, or other quantities of first connecting plates 93 may be provided, and the first connecting plates 93 may also adopt other cross-sectional shapes, such as semi-circular, elliptical, etc. Thus, by setting the first inner ring body 91, the first outer ring body 92, and the connecting part 94 as a simple ring-shaped structure or arc-shaped structure, the outer ring air intake channel 3 and the inner ring air intake channel 6 can be formed, and the outer ring air intake channel 3 and the inner ring air intake channel 6 are separated. At the same time, by using the structure of the first connecting plate 93, the first inner ring body 91, the first outer ring body 92, and the connecting part 94 can be connected into one piece, and the outer ring gas groove 5 is connected to the four outer ring air intake channels 3. The structure is simple and stable, does not require a complex channel structure, and is easy to process.

[0038] Please see Figure 4 and Figure 5The sealing cover 10 includes a second inner ring 101, a second outer ring 102 concentrically arranged with the second inner ring 101, a middle ring 103 concentrically arranged with the second inner ring 101 and located between the second outer ring 102 and the second inner ring 101, and a plurality of second connecting plates 104 for connecting the second inner ring 101, the second outer ring 102 and the middle ring 103. The second outer ring 102 can be covered on the third arc plate 943, the middle ring 103 can be covered on the second arc plate 942, the second connecting plate 104 can be covered on the first connecting plate 93 to form a connecting channel 4, the second inner ring 101 can be covered on the first inner ring 91 and the first arc plate 941 to connect a plurality of outer ring air intake channels 3, and an inner ring flame cap 8 is covered on the middle ring 103 to connect a plurality of inner ring air intake channels 6. Therefore, when the sealing cover 10 is placed on the gas distribution plate body 9, a cavity is formed between the second inner ring body 101 and the first inner ring body 91, thereby connecting the four outer ring air intake channels 3 to each other and connecting the four outer ring air intake channels 3 to the four connecting channels 4. Thus, when the inner ring gas of the burner head 1 enters the outer ring air intake channel 3, the inner ring gas can flow to the outer ring gas groove 5 through the four connecting channels 4 and be ejected from the burner through the flame outlet of the outer ring burner cover 7, thereby achieving the purpose of guiding the inner ring gas to the outer ring of the burner for combustion. Thus, under the condition of a certain heat exchange area, by setting a structure to guide the inner ring gas to the outer ring of the burner, the volume of the burner head 1 can be reduced, thereby reducing the overall cost of the burner.

[0039] Please continue reading Figure 4 and Figure 5 The gas distribution plate body 9 is fixedly connected to the first boss 14 at the connection between the connecting channel 4 and the outer ring gas tank 5. The second connecting plate 104 is provided with a second boss 15 matching the first boss 14 on one side facing the gas distribution plate body 9. The first boss 14 can be threadedly connected to the second boss 15 through a threaded connector. In this embodiment, the cross-sectional areas of the first protrusion 14 and the second protrusion 15 are smaller than the cross-sectional area of ​​the connecting channel 4. The first protrusion 14 is a frustum, and the second protrusion 15 is a cylinder. The end face of the cylinder is the same size as the top face of the frustum. A through hole is provided on the end face of the frustum, and the through hole penetrates the bottom surface of the gas distribution plate body 9. A threaded blind hole is provided on the cylinder. The threaded connector is a bolt. The bolt can be screwed into the threaded blind hole from the bottom surface of the gas distribution plate body 9 through the through hole, thereby fixing the sealing cover 10 to the gas distribution plate body 9. The operation is simple and convenient for the assembly and production of the burner. The first protrusion 14 is set in the form of a frustum, which can play the role of diverting gas, so that the gas can be diverted more evenly to the outer ring gas grooves 5 located on both sides of the first protrusion 14, which is beneficial to improving the thermal efficiency of the burner.

[0040] Please see Figure 1 and Figure 2Multiple secondary air intake holes 13 are disposed on the sidewall of the first inner ring body 91, allowing air to flow into the inner ring hole 2 through the secondary air intake holes 13. In this embodiment, the secondary air intake holes 13 have a rectangular cross-sectional shape, and four secondary air intake holes 13 are provided. The positions of the secondary air intake holes correspond to the positions of the connecting channels 4. When the burner is working, air can flow into the inner ring hole 2 through the secondary air intake holes 13, increasing the air intake volume of the burner and improving the thermal efficiency of the burner. Of course, in other embodiments, the number of secondary air intake holes 13 can be one, three, five, or any other arbitrary number, and the cross-sectional shape of the secondary air intake holes 13 can also be set to other shapes such as circular or elliptical. When there are multiple secondary air intake holes 13, the secondary air intake holes 13 are evenly distributed on the sidewall of the first inner ring body 91. In addition, the flame outlets of the inner ring burner cap 8 are all located on the outer ring side, and the flame outlets of the outer ring burner cap 7 are located on the outer ring side. This reduces the density of the flame outlets of the outer ring burner cap 7 and the inner ring burner cap 8, which is beneficial to improving the thermal efficiency of the burner.

[0041] Please see Figure 1 The first outer ring body 92 is covered with an outer ring flame cap 7 to form a channel for the flow of outer ring gas. Furthermore, the outer ring flame cap 7 can be formed separately from the sealing cap 10, or it can be integrally formed with the sealing cap 10. In actual production, the outer ring flame cap 7 and the sealing cap 10 can preferably be integrally formed by die casting, allowing them to be formed using a single mold. This effectively reduces production costs while enhancing the overall strength of the outer ring flame cap 7 and the sealing cap 10. Simultaneously, the integrally formed outer ring flame cap 7 and sealing cap 10 facilitate the subsequent assembly of the flame distributor, improving its sealing performance.

[0042] This application also discloses a three-ring burner, including the aforementioned high thermal efficiency three-ring burner.

[0043] For details, please refer to Figure 1 and Figure 6The burner also includes a burner head 1, on which an inner ring air outlet groove 11 and an outer ring air outlet groove 12 are concentrically arranged. The upper end faces of the inner ring air outlet groove 11 and the outer ring air outlet groove 12 are flush. The end face of the gas distribution plate body 9 away from the sealing cover 10 is provided with an installation slot 16 that is adapted to the outer side wall of the outer ring air outlet groove 12. When the gas distribution plate body 9 is installed on the burner head 1, the outer ring air outlet groove 12 is engaged in the installation slot 16. The outer ring air outlet groove 12 is connected to multiple inner ring air inlet channels 6, and the inner ring air outlet groove 11 is connected to multiple outer ring air inlet channels 3. The concentric inner ring exhaust groove 11 and outer ring exhaust groove 12 on the burner head 1 enable automatic alignment between the inner ring exhaust groove 11 and the outer ring air inlet channel 3, and between the outer ring exhaust groove 12 and the inner ring air inlet channel 6, when the burner is installed on the burner head 1, thus improving the coaxiality of the burner head 1 and the burner. Simultaneously, the flush upper surfaces of the inner ring exhaust groove 11 and outer ring exhaust groove 12 allow the upper sidewalls of the inner ring exhaust groove 11 and outer ring exhaust groove 12 to abut against the end face of the burner head 9 located in the mounting slot 16, facilitating the sealing operation between the burner head 1 and the burner head 1 and improving the sealing performance between the burner and the burner head 1.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A three-ring fire distribution plate, characterized in that: It includes an inner ring hole (2) for accommodating the central gas outlet of the burner head (1), a plurality of outer ring air inlet channels (3) disposed on the outer ring side of the inner ring hole (2), an outer ring gas groove (5) disposed on the outer ring side of the outer ring air inlet channel (3), a plurality of connecting channels (4) for connecting the outer ring gas groove (5) and the plurality of outer ring air inlet channels (3), a plurality of inner ring air inlet channels (6) disposed between the outer ring gas groove (5) and the plurality of outer ring air inlet channels (3), and a plurality of secondary air inlet holes (13) disposed on the side wall of the inner ring hole (2) and connected to the inner ring hole (2). The inner ring hole (2), the outer ring gas groove (5), the inner ring air inlet channel (6) and the outer ring air inlet channel (3) are concentrically arranged. The air distribution plate includes an air distribution plate body (9) and a sealing cover (10) covering the air distribution plate body (9). The outer ring air intake channel (3) and the connecting channel (4) are detachably connected and covered by the air distribution plate body (9) and the sealing cover (10). The gas distribution plate body (9) includes a first inner ring body (91), a first outer ring body (92) concentrically arranged with the first inner ring body (91), a plurality of first connecting plates (93) for connecting the first outer ring body (92) and the first inner ring body (91), and a plurality of connecting parts (94) disposed between the first outer ring body (92) and the first inner ring body (91). The plurality of first connecting plates (93) are evenly distributed on the outer ring side of the first inner ring body (91), and the plurality of connecting parts (94) are disposed between the first outer ring body (92) and the first inner ring body (91). The connecting part (94) is disposed between two adjacent first connecting plates (93). The connecting part (94) includes a first arc plate (941), a second arc plate (942) and a third arc plate (943) arranged concentrically with the first inner ring body (91). An outer ring air intake channel (3) is formed between the first arc plate (941) and the first inner ring body (91) to allow the outer ring gas to flow. An inner ring air intake channel (6) is formed between the first arc plate (941) and the second arc plate (942) to allow the gas to flow. Multiple secondary air intake holes (13) are provided on the side wall of the first inner ring body (91), and air can flow through the secondary air intake holes (13) into the inner ring hole (2); the secondary air intake holes (13) are located below the connecting channel (4), and the position of the secondary air intake holes (13) corresponds to the position of the connecting channel (4).

2. The three-ring fire distribution plate according to claim 1, characterized in that: The sealing cover (10) includes a second inner ring (101), a second outer ring (102) concentrically arranged with the second inner ring (101), a middle ring (103) concentrically arranged with the second inner ring (101) and located between the second outer ring (102) and the second inner ring (101), and a plurality of second connecting plates (104) for connecting the second inner ring (101), the second outer ring (102) and the middle ring (103). The middle ring (103) can be covered on the third arc plate (943), the middle ring (103) can be covered on the second arc plate (942), the second connecting plate (104) can be covered on the first connecting plate (93) to form a connecting channel (4), the second inner ring (101) can be covered on the first inner ring (91) and the first arc plate (941) to connect multiple outer ring air intake channels (3), and the middle ring (103) is covered with an inner ring fire cap (8) to connect multiple inner ring air intake channels (6).

3. A three-ring fire distribution plate according to claim 1, characterized in that: The cross-sectional shape of the connecting channel (4) is rectangular, and there are four connecting channels (4) in total.

4. A three-ring fire distribution plate according to claim 1, characterized in that: The first outer ring body (92) is covered with an outer ring flame cap (7) to form a channel for the outer ring gas to flow. The outer ring flame cap (7) can be formed separately from the sealing cap body (10) or integrally formed.

5. A three-ring fire distribution plate according to claim 2, characterized in that: The gas distribution plate body (9) is fixedly connected to a first boss (14) at the connection between the connecting channel (4) and the outer ring gas tank (5). The second connecting plate (104) is provided with a second boss (15) matching the first boss (14) on one side facing the gas distribution plate body (9). The first boss (14) can be threadedly connected to the second boss (15) through a threaded connector.

6. A three-ring burner, characterized in that: Includes the gas distribution plate as described in any one of claims 1-5.

7. A three-ring burner according to claim 6, characterized in that: The burner also includes a burner head (1), on which an inner ring exhaust groove (11) and an outer ring exhaust groove (12) are concentrically arranged. The upper surfaces of the inner ring exhaust groove (11) and the outer ring exhaust groove (12) are flush. The end face of the gas distribution plate body (9) away from the sealing cover (10) is provided with an installation slot (16) that is adapted to the outer side wall of the outer ring exhaust groove (12). When the gas distribution plate body (9) is installed on the burner head (1), the outer ring exhaust groove (12) is engaged in the installation slot (16). The outer ring exhaust groove (12) is connected to multiple inner ring air inlet channels (6), and the inner ring exhaust groove (11) is connected to multiple outer ring air inlet channels (3).

Images