Gas distribution disc, combustor and stove

Abstract

The utility model discloses a gas distribution disc, a combustor and a kitchen range, and the gas distribution disc comprises a gas distribution ring and a gas distribution seat; the gas distribution ring comprises an outer ring wall and a bearing wall which are connected, the bearing wall extends towards the inner side from the outer ring wall, and a mounting opening is formed in the inner side of the bearing wall; the air distribution seat comprises a main body part and an outer edge part connected to the peripheral side of the main body part, the main body part is arranged at the mounting port, the outer edge part is carried on the upper surface of the bearing wall, and the air distribution ring is matched with the outer edge part and the main body part to form a first airflow channel; wherein one of the bearing wall and the outer edge part is provided with a first connecting part, the other one of the bearing wall and the outer edge part is provided with a second connecting part, and the air distribution seat is fixed with the bearing wall through the connection and matching of the first connecting part and the second connecting part. According to the technical scheme, production and manufacturing of the gas distribution disc can be simplified.

Description

Technical Field

[0001] The present application relates to the technical field of kitchen appliances, and in particular to a gas distribution plate, a burner and a stove. Background Art

[0002] With the development of household stoves, more and more attention is paid to energy saving and environmental protection. Internal flame gas stoves have attracted widespread attention for their significant energy-saving effects.

[0003] In the related art, a gas distribution plate cooperates with a fire cover to form a mixing chamber for fully mixing the gas and air. However, the internal structures and shapes of the gas distribution plates currently on the market vary, and the molding process is complex, which brings certain difficulties to the manufacturing and production. Utility Model Content

[0004] The embodiments of the present application provide a gas distribution plate, a burner and a stove, which can simplify the production of the gas distribution plate.

[0005] In the first aspect, an embodiment of the present application provides an air distribution plate, which includes an air distribution ring and an air distribution seat, the air distribution ring includes a connected outer ring wall and a receiving wall, the receiving wall extends inward from the outer ring wall, and an installation port is formed on the inner side of the receiving wall; the air distribution seat includes a main body and an outer edge portion connected to the circumference of the main body, the main body is arranged at the installation port, the outer edge portion is mounted on the upper surface of the receiving wall, and the air distribution ring cooperates with the outer edge portion and the main body to form a first airflow channel; wherein, one of the receiving wall and the outer edge portion is provided with a first connecting portion, and the other of the two is provided with a second connecting portion, and the air distribution seat is fixed to the receiving wall by the connection and cooperation between the first connecting portion and the second connecting portion.

[0006] In some embodiments, a plurality of the first connection parts and the second connection parts are arranged at intervals along the circumference of the receiving wall, and one first connection part is arranged corresponding to one second connection part.

[0007] In some embodiments, one of the first connection portion and the second connection portion is a connection column, and the other of the first connection portion and the second connection portion is a connection hole, and the connection column is riveted to the connection hole.

[0008] In some embodiments, a positioning portion is protruding from the lower surface of the outer edge portion, and the positioning portion is inserted into the installation opening and abuts against the inner edge of the receiving wall.

[0009] In some embodiments, the positioning portion is ring-shaped.

[0010] In some embodiments, the lower end surface of the positioning portion is flush with the lower surface of the receiving wall.

[0011] In some embodiments, a radial dimension of a portion where the receiving wall and the outer edge portion overlap in the up-down direction along the gas distribution plate is defined as L, wherein L is 15 mm to 35 mm.

[0012] In some of the embodiments, a portion where the receiving wall and the outer edge portion overlap in the up-down direction is further provided with an air supply hole, and the air supply hole is connected to the first air flow channel.

[0013] In some embodiments, a second airflow channel and a connecting airway are further formed inside the main body, and two ends of the connecting airway are connected to the first airflow channel and the second airflow channel.

[0014] In some embodiments, the main body includes a first inner annular wall, a second inner annular wall and a plurality of connecting spokes connected between the first inner annular wall and the second inner annular wall, and the second inner annular wall surrounds the outer side of the first inner annular wall; the outer edge portion is connected to the second inner annular wall, the connecting airway is arranged in the connecting spokes, and the second airflow channel is formed in the first inner annular wall.

[0015] In a second aspect, an embodiment of the present application provides a burner, comprising a gas distribution plate as described in any one of the above items; a burner head, which is connected to the gas distribution plate and can supply gas to the first air flow channel; and a fire cover, which is arranged on the gas distribution plate and can seal the opening of the first air flow channel to form a first air mixing chamber, and the fire cover has a fire hole connected to the first air mixing chamber.

[0016] In a third aspect, an embodiment of the present application provides a stove, which includes a stove body and the burner as described above, wherein the burner is connected to the stove body.

[0017] Based on the gas distributor plate of the embodiment of the present application, by dividing the gas distributor plate into a gas distributor ring and a gas distributor seat, the two are processed and formed separately, which is conducive to simplifying the molding process of the gas distributor plate and reducing production costs. The gas distributor ring and the gas distributor seat with separate designs only need to reasonably design the relative size and position relationship between the two. After assembly, the space between the gas distributor ring and the outer edge portion and the main body can form a first airflow channel. In addition, the present application does not need to separately preset the spatial structure of the first airflow channel on the gas distributor ring or the gas distributor seat, which is conducive to reducing the slot-type structure on the gas distributor ring or the gas distributor seat, thereby simplifying the mold structure, reducing the difficulty of demoulding, simplifying the production process to reduce production costs, and further improving the manufacturability of the gas distributor plate.

[0018] The air dividing ring and the air dividing seat are connected and fixed to each other through the cooperation of the receiving wall and the outer edge. In this way, the receiving wall of the air dividing ring can be extended in the radial direction while the diameter of the main part of the air dividing seat remains unchanged, and then the diameter of the air dividing ring can be adjusted to adapt to the different internal structures of the air dividing seat, so that the production and assembly links have flexibility and high adaptability. In this way, the air dividing disk has high manufacturability, brings convenience to production and manufacturing, and is conducive to mass production. In addition, the outer edge is mounted on the upper surface of the receiving wall, so that the air dividing seat is mounted on the air dividing ring, and the air dividing ring can support and fix the air dividing seat at the bottom to ensure the structural stability of the air dividing seat, thereby enhancing the overall structural strength of the air dividing disk. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0020] Figure 1 This is a structural schematic diagram of an embodiment of a gas distribution plate of the present application;

[0021] Figure 2 for Figure 1 The exploded structural diagram of the gas distribution plate and the fire cover after assembly is shown in FIG.

[0022] Figure 3 for Figure 1 Another perspective structural schematic diagram of the gas distribution plate shown in FIG.

[0023] Figure 4 for Figure 3 AA cross-sectional view of the gas distribution plate shown in;

[0024] Figure 5 for Figure 4 An enlarged view of B shown in FIG.

[0025] Figure 6 for Figure 1 A cross-sectional view of the gas distribution plate and the fire cover after assembly is shown in FIG.

[0026] Description of Figure Numbers:

[0027] 1. Burner; 10. Gas distribution plate; 100. Gas distribution ring; 110. Outer ring wall; 111. First gas mixing chamber; 112. Second gas mixing chamber; 120. Receiving wall; 121. Mounting port; 122. First connecting portion; 130. First air flow channel; 200. Gas distribution seat; 210. Main body; 211. First inner ring wall; 2111. Second air flow channel; 2112. First air inlet; 212. Second inner ring wall; 2121. Second air inlet; 213. Connecting spokes; 2131. Connecting air channel; 214. Through hole; 220. Outer edge; 222. Second connecting portion; 223. Positioning portion; 224. Air supply hole; 11. Fire cover; 11a. Fire hole; 11b. Outer ring fire cover; 11c. Inner ring fire cover.

[0028] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] In order to make the objectives, technical solutions and advantages of the present application clearer, the following part will further describe the embodiments of the present application in detail in conjunction with the accompanying drawings.

[0030] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0031] In the description of the present application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0033] The development of household stoves pays more and more attention to energy saving and environmental protection. The internal flame gas stove has attracted wide attention for its significant energy saving effect. The stove usually includes a stove body and a burner, wherein the burner includes a gas distribution plate, a burner head and a fire cover. The burner head is connected to the gas distribution plate, and its main function is to fully mix the gas with the primary air, adjust the mixing ratio of air and gas, and supply gas to the gas distribution plate. The fire cover is set on the gas distribution plate, and the fire cover has fire holes, which can evenly distribute the mixed gas to each fire hole, so that the burner can evenly heat the cooker.

[0034] During operation, gas enters the burner from the air inlet pipe, enters the burner through the adjustment of the gas valve (the user adjusts it through the knob), and is mixed with a part of the air (this part of the air is called primary air). These mixed gases pass through the gas distribution plate, spray out from the fire holes of the fire cover, and are ignited by the ignition device to form flames (the air required for combustion is called secondary air). These flames are used to heat the cookware placed on the stove body.

[0035] In the related art, the gas distributor cooperates with the fire cover to form a mixing chamber for fully mixing the gas and air. However, the internal structures and shapes of the gas distributors currently on the market vary, and the molding process is complicated, which brings certain difficulties to the manufacturing and production.

[0036] To solve the above problems, please refer to Figures 1 to 3 , the present application proposes an air distribution plate 10. In an embodiment of the present application, the air distribution plate 10 includes an air distribution ring 100 and an air distribution seat 200. The air distribution ring 100 includes a connected outer ring wall 110 and a receiving wall 120. The receiving wall 120 extends inward from the outer ring wall 110, and an installation port 121 is formed on the inner side of the receiving wall 120; the air distribution seat 200 includes a main body 210 and an outer edge portion 220 connected to the peripheral side of the main body 210. The main body 210 is arranged at the installation port 121, and the outer edge portion 220 is mounted on the upper surface of the receiving wall 120, and the air distribution ring 100 cooperates with the outer edge portion 220 and the main body 210 to form a first air flow channel 130. The cooperation form may include but is not limited to interference fit, clearance fit, fastener connection, welding and the like.

[0037] The air divider ring 100 and the air divider seat 200 are made of materials with excellent thermal conductivity, such as metal cast iron, cast steel, etc. In order to further enhance the structural strength, improve durability, and simplify the manufacturing process, the air divider seat 200 can be an integrally formed structure and can be produced by casting. Of course, the air divider ring 100 and the air divider seat 200 can also be made of other materials with higher structural strength and high temperature resistance, and the present application does not impose any restrictions on this.

[0038] The gas dividing ring 100 and the gas dividing seat 200 are both formed in an annular shape, which is conducive to manufacturing and assembly, and helps to improve the smoothness of gas circulation inside. Since the outer edge 220 of the gas dividing ring 100 and the gas dividing seat 200 are both full-circle annular structures, the first airflow channel 130 is also a full-circle annular structure. In this way, after the gas is transported to the first airflow channel 130, it can flow along the first airflow channel 130 to ensure that the gas can diffuse to the entire circle. Compared with the solution of designing the first airflow channel 130 as a non-full-circle annular structure, this solution is conducive to ensuring the uniformity of gas diffusion, and is also conducive to the uniformity of mixing of gas and air, avoiding the situation where the discontinuous distribution of gas causes a circle of flame to be segmented.

[0039] One of the receiving wall 120 and the outer edge portion 220 is provided with a first connecting portion 122 , and the other is provided with a second connecting portion 222 . The air divider seat 200 is fixed to the receiving wall 120 by the connection and cooperation between the first connecting portion 122 and the second connecting portion 222 .

[0040] Compared with the prior art, the gas distributor 10 is set as an integral structure, which makes the overall structure of the gas distributor 10 more complicated. When the commonly used casting process is used for molding, the mold is more complicated and the cost is higher. In addition, it is difficult to demold during molding, and the manufacturability is low, which is not conducive to mass production. However, the present application divides the gas distributor 10 into a gas distributor ring 100 and a gas distributor seat 200, and the two are processed and molded separately, which is conducive to simplifying the molding process of the gas distributor 10 and reducing production costs. The split-design gas distributor ring 100 and the gas distributor seat 200 only need to reasonably design the relative size and position relationship between the two. After assembly, the space between the gas distributor ring 100 and the outer edge portion 220 and the main body 210 can form the first airflow channel 130. Compared with the solution of solely using the air dividing ring 100 or solely using the air dividing seat 200 to form the first air flow channel 130, the present solution does not need to separately preset the spatial structure of the first air flow channel 130 on the air dividing ring 100 or the air dividing seat 200, which is beneficial to reducing the slot-like structures on the air dividing ring 100 or the air dividing seat 200, thereby simplifying the mold structure, reducing the difficulty of demolding, simplifying the production process to reduce the production cost, and further improving the manufacturability of the air dividing plate 10.

[0041] Furthermore, the air dividing ring 100 and the air dividing seat 200 are connected and fixed to each other through the cooperation of the receiving wall 120 and the outer edge 220. In this way, the receiving wall 120 of the air dividing ring 100 can be extended in the radial direction while the diameter of the main body 210 of the air dividing seat 200 remains unchanged, thereby adjusting the diameter of the air dividing ring 100 to adapt to the different internal structural forms of the air dividing seat 200, so that the production and assembly links have flexibility and high adaptability. In this way, the air dividing disk 10 has high manufacturability, brings convenience to production and manufacturing, and is conducive to mass production. Furthermore, the outer edge 220 is mounted on the upper surface of the receiving wall 120, so that the air dividing seat 200 is mounted on the air dividing ring 100, and the air dividing ring 100 can support and fix the air dividing seat 200 at the bottom to ensure the structural stability of the air dividing seat 200, thereby enhancing the overall structural strength of the air dividing disk 10.

[0042] Specifically, Figure 2 and Figure 3 As shown, the first connection part 122 and the second connection part 222 are both arranged at intervals along the circumference of the receiving wall 120, and a first connection part 122 is arranged corresponding to a second connection part 222. That is, the first connection part 122 and the second connection part 222 can be screwed, welded, riveted or other fixed connection methods to enhance the connection strength between the air dividing ring 100 and the air dividing seat 200, and the first connection part 122 and the second connection part 222 are arranged at intervals along the circumference, so that the air dividing ring 100 and the air dividing seat 200 can be fixed around in the circumferential direction, the connection force is uniform, and the unstable connection is reduced.

[0043] One of the first connection part 122 and the second connection part 222 is a connection column, and the other of the two is a connection hole, and the connection column and the connection hole are riveted together. In a specific embodiment of the present application, the first connection part 122 is a connection column, and is arranged on the outer edge 220 of the air dividing seat 200, and the connection column is arranged on the lower surface of the outer edge 220, and the second connection part 222 is a connection hole, and is arranged on the receiving wall 120 of the air dividing ring 100. During the assembly process of the air dividing ring 100 and the air dividing seat 200, multiple connection columns and multiple connection holes are aligned one by one, and the connection column is riveted in the connection hole, which can play a good positioning role, thereby reducing the assembly difficulty of the air dividing ring and the air dividing seat 200. Of course, the connection column can also be arranged on the receiving wall 120 of the air dividing ring 100, and correspondingly, the connection hole is arranged on the outer edge 220 of the air dividing seat 200, which can also facilitate the connection between the air dividing ring 100 and the air dividing seat 200.

[0044] Furthermore, the height of the connecting column is greater than the depth of the connecting hole. After the two are aligned and connected, a part of the connecting column can be inserted into the connecting hole and protrude from the connecting hole. At this time, the part of the connecting column protruding from the connecting hole can be flattened by cold heading process, so that its area is greater than the cross-sectional area of ​​the connecting hole, thereby preventing the air separator ring 100 and the air separator seat 200 from separating and improving the connection strength between the air separator ring 100 and the air separator seat 200. The cold heading process is a processing method that utilizes the plastic deformation of metal under the action of external force, and with the help of a mold, redistributes and transfers the metal volume to form the required parts or blanks, which can improve the matching connection strength between the connecting column and the connecting hole.

[0045] In addition, a positioning portion 223 is convexly provided on the lower surface of the outer edge portion 220. The positioning portion 223 is inserted into the mounting opening 121 and abuts against the inner edge of the receiving wall 120. The air splitter ring 100 can be quickly positioned during assembly, simplifying the production steps and improving the manufacturing efficiency. The positioning portion 223 is annular, which can increase the abutment area with the inner edge of the receiving wall 120 and improve the positioning accuracy. It is understandable that the annular structure of the positioning portion 223 can also be intermittent, or can be formed into a plurality of protruding structures or other structural forms, and the present application does not limit this.

[0046] In addition, the lower end surface of the positioning portion 223 is flush with the lower surface of the receiving wall 120. When the gas distribution plate 10 is disassembled and cleaned, the entire lower end surface of the gas distribution plate 10 can be conveniently cleaned, avoiding the cleaning difficulty caused by the protruding lower end surface of the positioning portion 223, and also reducing dirt.

[0047] Since the top outer contour of the gas distribution ring 100 is circular, the diameter of the top outer contour of the gas distribution ring 100 is in the range of 125 mm to 135 mm, such as 125 mm, 128 mm, 130 mm, 132 mm, 135 mm, etc. The outer diameter of the existing gas distribution plate 10 is generally based on the diameter of the top contour of the gas distribution ring 100. The larger the outer diameter of the gas distribution plate 10, the better the dispersion ability of the gas; the smaller the outer diameter of the gas distribution plate 10, the better the dispersion ability of the gas. The outer diameter of the existing gas distribution plate 10 is generally within 120 mm, and the present solution enables the diameter of the gas distribution ring 100 to be adaptively adjusted through the matching connection of the receiving wall 120 and the outer edge portion 220, so that the outer diameter of the gas distribution ring 100 can be increased to the range of 125 mm to 135 mm, thereby increasing the outer diameter of the gas distribution plate 10. This can improve the dispersion ability of the fuel gas and the combustion energy gathering effect. The outer diameter of the gas distribution plate 10 can be adjusted by adjusting the diameter of the gas distribution ring 100 without the need for remanufacturing, thereby making the structure of the gas distribution plate 10 more flexible and highly adaptable, simplifying the difficulty of production and manufacturing, and reducing production costs.

[0048] See also Figure 4 and Figure 5 , the outer edge 220 is mounted on the upper surface of the receiving wall 120, and the receiving wall 120 and the outer edge 220 have an overlapping portion in the up and down directions, and the radial dimension of the overlapping portion along the gas distribution plate 10 is defined as L, wherein L is 15mm to 35mm, that is, the radial dimension of the overlapping portion of the receiving wall 120 and the outer edge 220 in the up and down directions can be 15mm, 18mm, 20mm, 25mm or 35mm, etc., to ensure that the receiving wall 120 can have a larger area to support the outer edge 220 and ensure the supporting strength.

[0049] In some embodiments, the portion where the receiving wall 120 and the outer edge portion 220 overlap in the vertical direction is further provided with an air-injection hole 224, which is connected to the first airflow channel 130 and can assist in air-injection for the first airflow channel 130, so as to further improve the gas mixing efficiency in the first airflow channel 130. The specific form of the air-injection hole 224 can be a step column provided on the outer edge portion 220, which is connected vertically to form the air-injection hole 224. The step column form can enhance the overall strength of the air-injection hole 224 structure and facilitate air flow. Of course, it can also be in other forms, and the present application does not limit this.

[0050] In some embodiments, a second airflow channel 2111 and a connecting air channel 2131 are further formed inside the main body 210, and both ends of the connecting air channel 2131 are connected to the first airflow channel 130 and the second airflow channel 2111. Specifically, the main body 210 includes a first inner ring wall 211, a second inner ring wall 212, and a plurality of connecting spokes 213 connected between the first inner ring wall 211 and the second inner ring wall 212, and the second inner ring wall 212 surrounds the outer side of the first inner ring wall 211. The outer edge 220 is connected to the second inner ring wall 212, and a connecting air channel 2131 is provided in the connecting spoke 213. The second airflow channel 2111 is formed in the first inner ring wall 211, and the mixed gas of fuel gas and air can enter the first airflow channel 130 and the second airflow channel 2111 to provide gas for combustion.

[0051] Specifically, a first air inlet 2112 is formed on the first inner annular wall 211, and a second air inlet 2121 is formed on the second inner annular wall 212. After the gas distribution plate 10 is connected to the burner head (not shown in the figure), the burner head supplies gas to the first air inlet 2112, so that the mixed gas passes through the connecting air channel 2131 from the first air inlet 2112 and enters the first air flow channel 130 from the second air inlet 2121. The mixed gas and secondary air flow evenly and fully in the first air flow channel 130, so that the combustion of the mixed gas is more complete, the combustion efficiency is improved, and the energy efficiency level of the burner 1 is improved.

[0052] In one embodiment, the plurality of communication passages 2131 may be evenly distributed along the circumference of the first airflow channel 130, so that the mixed gas may evenly enter the first airflow channel 130 through the communication passages 2131, thereby improving the combustion efficiency. It is understandable that in other embodiments, the plurality of communication passages 2131 may also be provided according to actual requirements, and are not limited to the embodiments discussed above.

[0053] The first air inlet 2112 and the second air inlet 2121 may be roughly circular and coaxially arranged with the first air flow channel 130. The cross section of the connecting air channel 2131 along the axial direction perpendicular to the first air flow channel 130 is approximately fan-shaped and is distributed at equal angles along the circumference of the first air flow channel 130. In this way, the mixed gas gradually diffuses when entering the first air flow channel 130 through the connecting air channel 2131, so it can be more evenly distributed.

[0054] It is understandable that the shapes of the first air inlet 2112 , the second air inlet 2121 , the first air flow channel 130 , and the communication air channel 2131 are not limited to the embodiments discussed above, and may be appropriately modified as required.

[0055] In some embodiments, the main body 210 of the gas distributor 200 is also formed with a through hole 214 located between the connecting spokes 213 and penetrating the main body 210 in the up and down directions. In this way, the through hole 214 is connected to the air. When the mixed gas burns, the air can more effectively and fully supplement the secondary air for the combustion along the through hole 214, so that the gas can be fully burned, thereby improving the efficiency of the gas combustion. Specifically, the through hole 214 is approximately fan-shaped along the cross section perpendicular to the axial direction. There are a plurality of through holes 214, and the specific number can be three. The through holes 214 are evenly distributed between the circumference of the gas channel. It can be understood that in other embodiments, the number, shape, structure and distribution of the through holes 214 can be set according to actual requirements, and are not limited to the embodiments discussed above.

[0056] In addition, the lower end surface of the first inner ring wall 211 is arranged to protrude from the outside. In this way, when the furnace head is installed, the lower end surface of the first inner ring wall 211 can suspend the external structure to form an air replenishment space, thereby allowing the secondary air to be replenished more smoothly.

[0057] The present application also proposes a burner 1, which includes a burner head, a fire cover 11 and a gas distribution plate 10. The specific structure of the gas distribution plate 10 refers to the above embodiment. Since the burner 1 adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here. Figures 4 to 6The burner head is connected to the gas distribution plate 10 and can supply gas to the first air flow channel 130. The fire cover 11 is arranged on the gas distribution plate 10 and can cover the opening of the first air flow channel 130 to form a first gas mixing chamber 111. The fire cover 11 has a fire hole 11a connected to the first gas mixing chamber 111.

[0058] Specifically, the burner head includes an outer ejector tube and an inner ejector tube, and the first air inlet 2112 is connected to the outer ejector tube, so that the mixed gas can enter the first air inlet 2112 from the outer ejector tube, and further enter the first gas mixing chamber 111. The inner ejector tube is connected to the second air flow channel 2111 to supply fuel gas.

[0059] The fire cover 11 includes an outer ring fire cover 11b and an inner ring fire cover 11c. The outer ring fire cover 11b covers the opening of the first air flow channel 130 to form a first gas mixing chamber 111. The outer ring fire cover 11b has a fire hole 11a connected to the first gas mixing chamber 111. The inner ring fire cover 11c covers the opening of the second air flow channel 2111 to form a second gas mixing chamber 112. The inner ring fire cover 11c also has a fire hole 11a to connect to the second gas mixing chamber 112. When the burner 1 burns the mixed gas, air enters the inner ring fire cover 11c and the outer ring fire cover 11b from the bottom of the through hole 214 to supplement the air required for the combustion of the mixed gas. At the same time, air can also enter the outer ring fire cover 11b and the inner ring fire cover 11c from the radial outside of the outer ring fire cover 11b to supplement the air required for the combustion of the mixed gas.

[0060] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "up", "down", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0061] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A gas distribution plate, characterized in that: include: An air dividing ring, the air dividing ring comprising an outer ring wall and a receiving wall connected to each other, the receiving wall extending inward from the outer ring wall, and a mounting opening being formed on the inner side of the receiving wall; and The air distributor seat comprises a main body and an outer edge connected to the periphery of the main body, wherein the main body is arranged at the mounting opening, the outer edge is mounted on the upper surface of the receiving wall, and the air distributor ring cooperates with the outer edge and the main body to form a first air flow channel; Among them, one of the receiving wall and the outer edge portion is provided with a first connecting portion, and the other of the two is provided with a second connecting portion, and the gas dividing seat is fixed to the receiving wall through the connection and cooperation between the first connecting portion and the second connecting portion.

2. The gas distribution plate according to claim 1, characterized in that: A plurality of the first connection parts and the second connection parts are arranged at intervals along the circumferential direction of the receiving wall, and one first connection part is arranged corresponding to one second connection part.

3. The gas distribution plate according to claim 2, characterized in that: One of the first connection part and the second connection part is a connection column, and the other of the two is a connection hole, and the connection column is riveted to the connection hole.

4. The gas distribution plate according to claim 1, characterized in that: A positioning portion is also protruded from the lower surface of the outer edge portion. The positioning portion is inserted into the installation opening and abuts against the inner edge of the receiving wall.

5. The gas distribution plate according to claim 4, characterized in that: The positioning portion is ring-shaped.

6. The gas distribution plate according to claim 4, characterized in that: The lower end surface of the positioning portion is flush with the lower surface of the receiving wall.

7. The gas distribution plate according to claim 1, characterized in that: The dimension of the portion where the receiving wall and the outer edge portion overlap in the up-down direction along the radial direction of the gas distribution plate is defined as L, wherein L is 15 mm to 35 mm.

8. The gas distribution plate according to any one of claims 1 to 7, characterized in that: An air supply hole is further provided at a portion where the receiving wall and the outer edge portion overlap in the up-down direction, and the air supply hole is connected to the first air flow channel.

9. The gas distribution plate according to any one of claims 1 to 7, characterized in that: A second airflow channel and a connecting airway are also formed inside the main body, and two ends of the connecting airway are connected to the first airflow channel and the second airflow channel.

10. The gas distribution plate according to claim 9, characterized in that: The main body comprises a first inner annular wall, a second inner annular wall and a plurality of connecting spokes connected between the first inner annular wall and the second inner annular wall, wherein the second inner annular wall surrounds the outer side of the first inner annular wall; The outer edge portion is connected to the second inner ring wall, the connecting air passage is arranged in the connecting spoke, and the second air flow channel is formed in the first inner ring wall.

11. A burner, characterized in that: include The gas distributor according to any one of claims 1 to 10; A furnace head connected to the gas distribution plate and capable of supplying gas to the first air flow channel; as well as A fire cover is arranged on the gas distribution plate and can cover the opening of the first air flow channel to form a first gas mixing chamber. The fire cover has a fire hole connected to the first gas mixing chamber.

12. A cooking appliance, characterized in that: include Cooker body; and The burner according to claim 11, wherein the burner is connected to the stove body.

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