Burner and cooking utensil

Abstract

The burner comprises a shell and a flow limiting structure, the shell is provided with a containing cavity and a plurality of fire holes, the containing cavity comprises a gas inlet part and an annular part which are arranged in a communicated mode, the gas inlet part is used for being communicated with a gas pipeline, and the fire holes are arranged at intervals in the preset direction. The multiple fire holes are formed in the radial inner side of the annular part and communicate with the annular part correspondingly, and the multiple fire holes are used for spraying out fuel gas. And the flow limiting structure is arranged in the annular part, the flow limiting structure is arranged on one side of the intersection of the air inlet part and the annular part, and the flow limiting structure is used for reducing the flow cross section of the annular part. According to the burner, the annular part is arranged to be matched with the flow limiting structure, in the flowing process of fuel gas, the flow rate and the flow speed of the fuel gas can be effectively adjusted by reducing the circulation cross section of the annular part, the flow speed of all outlets in the annular part is made to be uniform, and the stability structure of fuel gas burning can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a burner and a cooking utensil. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] Gas cooking appliances generally include a combustion assembly, which utilizes the combustion of gas to provide heat for the cooking process of the cooking appliance.

[0004] Existing sheet metal burners usually have an injection port, a cavity and a fire hole. In actual use, a certain pressure of gas enters the burner from the injection port in the form of a jet, and draws in the surrounding primary air for mixing, and then is ignited at the fire hole. At this time, part of the heat is provided by the high-temperature smoke generated by the combustion to heat the food by convection, and the other part of the heat is provided by the flame radiation. Among them, whether the combustion is stable directly affects the cooking time of the food and the smoke emission level of the burner.

[0005] However, existing sheet metal burners mostly adopt a columnar structure, with the injection port arranged at one end of the columnar structure and the fire holes arranged on both sides of the columnar structure. At this time, the gas output flow rate of the fire holes close to the injection port is faster, and the gas output flow rate of the fire holes far from the injection port is slower, resulting in unstable combustion of the burner. Utility Model Content

[0006] The purpose of the utility model is to at least solve the problem of poor combustion stability of existing burners. This purpose is achieved through the following technical solutions:

[0007] The utility model provides a burner, which comprises:

[0008] A shell, the shell having a cavity and a plurality of fire holes, the cavity comprising an air inlet portion and an annular portion which are connected, the air inlet portion being used to communicate with a gas pipeline, the plurality of fire holes being arranged at intervals along a preset direction, the plurality of fire holes being arranged radially inward of the annular portion and respectively connected with the annular portion, and the plurality of fire holes being used to eject gas;

[0009] A flow limiting structure is arranged inside the annular portion, the flow limiting structure is arranged on one side of the intersection of the air inlet portion and the annular portion, and the flow limiting structure is used to reduce the flow cross-section of the annular portion.

[0010] According to the burner of the utility model, it includes a shell and a flow limiting structure, wherein the shell has a cavity and a fire hole, and the cavity has an air inlet portion and an annular portion. After the gas in the gas pipeline enters the annular portion, it can be ejected through the fire hole and the burner is burned by ignition. During the flow of the gas, the flow limiting structure located in the annular portion can effectively adjust the flow rate and flow velocity of the gas by reducing the flow cross-section of the annular portion, thereby making the flow velocity of each outlet on the annular portion uniform, which helps to improve the stability of gas combustion.

[0011] In addition, the burner according to the utility model may also have the following additional technical features:

[0012] In some embodiments of the utility model, the shell includes a first body and a second body, the first body and the second body together form the cavity and the multiple fire holes, the flow limiting structure cooperates with the annular portion to form a reflow section, the reflow section has a return air end and an air outlet end, the reflow section is sequentially provided with a contraction section and a diffusion section along the direction extending from the return air end to the air outlet end, and the flow cross-section of the contraction section is a gradually contracting structure, and the flow cross-section of the diffusion section is a gradually expanding structure.

[0013] In some embodiments of the present invention, the current limiting structure includes:

[0014] A first portion, wherein the first portion is a first profile formed on the first body;

[0015] The second part is a second pressure profile formed on the second body, and the first pressure profile and the second pressure profile are arranged at intervals to form the reflow section.

[0016] In some embodiments of the present invention, the burner further includes at least one first connection structure, and the first body and the second body are connected to each other through the at least one first connection structure.

[0017] In some embodiments of the present invention, the first connection structure is arranged radially inside the annular portion.

[0018] In some embodiments of the present invention, a sealing structure is provided between the first body and the second body, and the sealing structure is arranged radially outside the annular portion.

[0019] In some embodiments of the present invention, the sealing structure is a flange structure formed on the edge of the first body.

[0020] In some embodiments of the present invention, at the connection position between the first body and the second body, the first connection structure blocks the connection between the fire hole and the cavity, and a plurality of second fire transfer channels are provided on the shell, and the second fire transfer channels are used to connect the cavity and the blocked fire hole.

[0021] In some embodiments of the utility model, a first blocking structure is provided on the second body, the first blocking structure is arranged on the radial inner side of the annular portion, the first blocking structure is extended along the preset direction, and is spaced apart from the multiple fire holes, and the area spaced apart from the first blocking structure and the multiple fire holes constitutes a first fire transfer channel.

[0022] In some embodiments of the utility model, the burner also includes a guide structure, which is arranged on the shell, and the guide structure has a guide plate, and air holes are opened on the guide plate. At least part of the guide plate is located on the side of the multiple fire holes away from the annular portion, and the air holes are concentrically arranged with the annular portion. The guide plate is used to guide the smoke formed after the combustion of the gas ejected from the multiple fire holes to flow toward the air holes.

[0023] In some embodiments of the present invention, a mounting portion is provided on the housing.

[0024] A second aspect of the present invention provides a cooking appliance, which comprises the burner as described above.

[0025] According to the cooking utensil of the utility model, it includes a burner with a shell and a flow limiting structure, wherein the shell has a cavity and a fire hole, and the cavity has an air inlet portion and an annular portion. After the gas in the gas pipeline enters the annular portion, it can be ejected through the fire hole and the burner is burned by ignition. During the flow of the gas, the flow limiting structure located in the annular portion can effectively adjust the flow rate and flow velocity of the gas by reducing the flow cross-section of the annular portion, thereby making the flow velocity of each outlet on the annular portion uniform, which helps to improve the stability of gas combustion. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0027] Figure 1 The schematic diagram of the structure of the burner according to the embodiment of the utility model at a certain viewing angle is shown schematically (the black arrow line in the figure is the flow direction of the gas);

[0028] Figure 2 for Figure 1 A schematic diagram of the structure of the burner shown in another perspective (the black arrow line in the figure is the flow direction of the gas);

[0029] Figure 3 for Figure 1 Schematic diagram of the exploded structure of the burner shown in ;

[0030] Figure 4 for Figure 1 A schematic structural diagram of a first body of a burner shown in ;

[0031] Figure 5 for Figure 1 A schematic structural diagram of a second body of the burner shown in ;

[0032] Figure 6 for Figure 1 An enlarged structural diagram of part A of the burner shown in FIG.

[0033] Figure 7 for Figure 2 BB section view of the burner shown in (the black arrow line in the figure is the flow direction of the gas);

[0034] Figure 8 The schematic diagram shows a partial structure of a cooking appliance according to an embodiment of the utility model at a certain viewing angle;

[0035] Fig. 9 for Figure 8 A schematic diagram of the partial structure of the cooking appliance shown in FIG. 1 at a second viewing angle (the black arrow line in the figure indicates the flow direction of the smoke);

[0036] Fig.10 for Figure 8 A schematic diagram of a partial structure of a cooking appliance shown in FIG. 1 from a third viewing angle;

[0037] Fig.11 for Fig.10 FIG. 1 is an enlarged schematic diagram of the local structure of the C portion of the cooking utensil shown in FIG.

[0038] The reference numerals are as follows:

[0039] 1000. Oven;

[0040] 100, burner; 200, box; 300, fan assembly; 400, tray; 500, gas pipe; 600, mounting frame;

[0041] 101. cavity; 102. fire hole; 103. reflux section;

[0042] 1011. air inlet portion; 1012. annular portion;

[0043] 1021, main fire hole; 1022, auxiliary fire hole;

[0044] 1031, air return end; 1032, air outlet end; 1033, contraction section; 1034, diffusion section; 1035, flow limiting section;

[0045] 10. The first ontology;

[0046] 11. first cavity; 12. first plate body; 13. first connecting portion; 14. first avoidance portion; 15. fire hole structural cavity; 16. mounting portion;

[0047] 111. first contraction section; 112. first diffusion section;

[0048] 20. Second entity;

[0049] 21. second cavity; 22. second plate body; 23. second connecting portion; 24. second avoidance portion; 25. fire transfer groove;

[0050] 211, second contraction section; 212, second diffusion section;

[0051] 30. A first connection structure;

[0052] 40. Sealing structure;

[0053] 50. Diversion structure;

[0054] 501, guide plate; 502, vent hole;

[0055] 60. A first blocking structure;

[0056] 70. A second connection structure;

[0057] 701, third connection part; 702, fourth connection part;

[0058] 90. Current limiting structure;

[0059] 901, first pressing; 902, second pressing. DETAILED DESCRIPTION

[0060] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0061] It should be understood that the terms used in the text are only for the purpose of describing specific example embodiments, and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used in the text may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0062] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0063] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both above and below orientations.

[0064] like Figures 1 to 11As shown, according to an embodiment of the present utility model, a burner 100 is proposed, and the burner 100 is used to be arranged on a cooking utensil, and specifically comprises a shell and a flow limiting structure 90. The shell has a cavity 101 and a fire hole 102, and the gas pipeline can be connected to the cavity 101. At the same time, there are multiple fire holes 102, and all the fire holes 102 are arranged at intervals along a preset direction on the burner 100, and each fire hole 102 is connected to the cavity 101, and the gas in the cavity 101 can be sprayed out through the fire hole 102.

[0065] Furthermore, the cavity 101 includes an air inlet portion 1011 and an annular portion 1012 which are connected to each other. The air inlet portion 1011 is used to communicate with the gas pipeline. All the fire holes 102 are arranged on the radial inner side of the annular portion 1012 and are connected to the annular portion 1012 respectively.

[0066] Furthermore, a flow limiting structure 90 is arranged inside the annular portion 1012. The flow limiting structure 90 is arranged on one side of the intersection of the air inlet portion 1011 and the annular portion 1012. The flow limiting structure 90 is used to reduce the flow cross-section of the annular portion 1012 to ensure that the gas flows to the other side of the intersection of the air inlet portion 1011 and the annular portion 1012, and to limit the gas flow rate that flows back to the intersection of the air inlet portion 1011 and the annular portion 1012.

[0067] Specifically, the shell has a cavity 101 and a fire hole 102, wherein the cavity 101 has an air inlet portion 1011 and an annular portion 1012. After the gas in the gas pipeline flows into the annular portion 1012 through the air inlet portion 1011, it can be ejected through the fire hole 102 and ignited to realize the combustion of the burner 100. During the flow of the gas, the flow limiting structure 90 located inside the annular portion 1012 can effectively adjust the flow direction and flow rate of the gas by reducing the flow cross-section of the annular portion 1012, and ensure that the gas flows in the annular portion 1012 along a first direction, which is the circumferential direction of the annular portion 1012. At the same time, the flow limiting structure 90 can also be used to adjust the flow rate of the gas refluxed at the intersection of the air inlet portion 1011 and the annular portion 1012, thereby ensuring that the flow rate near each fire hole 102 on the annular portion 1012 is uniform, so as to solve the problem of poor combustion stability of the existing burner 100.

[0068] It is important to understand that Figure 1 and Figure 2As shown, when the burner 100 is in use, the gas flows from the air inlet 1011 to the annular portion 1012, and then the gas in the annular portion 1012 is ejected through the fire hole 102. At this time, the ejected gas is ignited at the position of a certain fire hole 102, and the ignited gas burns to form an annular flame. Since the flow limiting structure 90 is arranged on one side of the intersection of the air inlet 1011 and the annular portion 1012, when the gas flows from the air inlet 1011 to the annular portion 1012, part of the gas will be blocked by the flow limiting structure 90, and then the blocked part of the gas will continue to flow along the first direction with other gas and finally flow back to the flow limiting structure 90, and at this time, the returned gas will impact the gas flowing from the air inlet 1011 into the annular portion 1012 after passing through the flow limiting mechanism, thereby reducing the output flow rate of the fire hole 102 near the intersection of the air inlet 1011 and the annular portion 1012, which helps to make the flow rate of the fire holes 102 at various locations more uniform.

[0069] In addition, the cavity 101 is partially configured as an annular structure, which can effectively reduce the loss of kinetic energy of the gas mixture (the mixture of gas and air), and easily form a vortex flowing along the annular portion 1012, so that the gas is more evenly distributed when entering the annular portion 1012. At the same time, the annular portion 1012 can reflux part of the gas mixture to mix the gas again, which helps to further enhance the mixing effect of the gas and can also make the gas more evenly distributed in the annular portion 1012.

[0070] It should be noted that the air inlet 1011 of the gas burner has an air inlet and an air outlet, and the air inlet is used to receive the gas output from the gas pipeline and the air. The gas and air flowing into the air inlet 1011 can be set according to a preset ratio so that the gas entering the cavity 101 forms a mixed gas to meet the requirements of gas combustion.

[0071] In the implementation mode of the present application, Figure 1 and Figure 2 As shown, the air outlet of the air inlet 1011 is arranged tangentially to the annular portion 1012, and the flow-limiting structure 90 is arranged upstream of the intersection of the air inlet 1011 and the annular portion 1012 along the flow direction of the gas, wherein the arrow direction shown in the figure is the flow direction of the gas. The air inlet 1011 is arranged tangentially to the annular portion 1012, which can effectively reduce the collision of the gas with the inner wall of the annular portion 1012 when the gas enters the annular portion 1012, thereby reducing the kinetic energy loss of the gas mixture. At the same time, the flow-limiting structure 90 is arranged upstream of the intersection of the air inlet 1011 and the annular portion 1012, which helps to reduce the amount of gas flowing to the flow-limiting structure 90, thereby ensuring that the gas always moves along the outlet direction of the air inlet 1011.

[0072] Furthermore, if Figures 3 to 5As shown, the first body 10 has a first plate 12 and a first cavity 11, the first plate 12 is arranged outside the opening of the first cavity 11 and arranged along the circumferential direction, the second body 20 has a second plate 22 and a second cavity 21, the second plate 22 is arranged outside the opening of the second cavity 21 and arranged along the circumferential direction, and a fire hole construction cavity 15 is arranged on one of the second body 20 and the first body 10. When the first body 10 and the second body 20 are connected and fixed, the first cavity 11 and the second cavity 21 are buckled together to form the structure of the cavity 101, and the fire hole construction cavity 15 abuts against the corresponding plate and encloses a plurality of fire holes 102.

[0073] In the embodiment of the present application, the first body 10 has a fire hole structure cavity 15, a first plate body 12 and a first cavity 11, wherein the fire hole structure cavity 15, the first body 10 and the first cavity 11 are processed in an integrated manner, thereby reducing the processing steps and improving the convenience of processing, so that the manufacturing cost can be reduced. The second body 20 has a second plate body 22 and a second cavity 21, wherein the second plate body 22 and the second cavity 21 are processed in an integrated manner, which can also reduce the processing steps, improve the convenience of processing, and reduce the manufacturing cost.

[0074] It should be understood that the first cavity 11 has an opening on the side facing the second body 20, the first plate 12 is located outside the opening of the first cavity 11 and extends along the circumference of the opening of the first cavity 11, the first plate 12 can be regarded as a flange formed at the opening position of the first cavity 11, and the size of the flange can at least meet the needs of setting the fire hole structural cavity 15, the fire hole structural cavity 15 is formed on the first plate 12, and the fire hole structural cavity 15 is a corrugated structure. At the same time, the second cavity 21 has an opening on the side facing the first body 10, the second plate 22 is located outside the opening of the second cavity 21 and extends along the circumference of the opening of the second cavity 21, the second plate 22 can be regarded as a flange formed at the opening position of the second cavity 21, and the size of the flange can meet the needs of setting the following guide structure 50, sealing structure 40 and first fire transfer flow channel. When the first body 10 is fixed on the top of the second body 20, the opening of the first cavity 11 and the opening of the second cavity 21 fit together to form a cavity 101, and the trough position of the corrugated structure fire hole construction cavity 15 abuts against the top of the second plate body 22, and a plurality of fire holes 102 are formed between the corrugated structure fire hole construction cavity 15 and the second plate body 22.

[0075] It should be noted that the burner 100 is made of a high temperature resistant and corrosion resistant material. The first body 10 can be a sheet metal stamping part or a casting, and similarly, the second body 20 can be a sheet metal stamping part or a casting. In addition, the burner 100 as a whole can also be set as a casting.

[0076] In the embodiment of the present application, the first body 10 is a first sheet metal part, and the second body 20 is a second sheet metal part. The first sheet metal part is a plate-like structure, and is formed with a first cavity 11, a first plate body 12, and a fire hole structure cavity 15 (fire hole pressing) by stamping, wherein the first cavity 11 includes a first part and a second part, the first part is extended in a straight line direction, and the second part is an annular structure. The fire hole structure cavity 15 is located radially inside the annular structure and is connected to the first cavity 11. The second sheet metal part is also a plate-like structure, and is formed with a second cavity 21 and a second plate body 22 by stamping, wherein the second cavity 21 includes a third part and a fourth part, the third part is extended in a straight line direction, and the fourth part is an annular structure. When the first body 10 and the second body 20 are connected and fixed, the first body 10 and the second body 20 are in contact with each other, the first cavity 11 and the second cavity 21 are interlocked to form a cavity 101, and the structure of the second body 20 located outside the second cavity 21 is a second plate 22, and the second plate 22 abuts against the fire hole structure cavity 15 and surrounds the fire hole structure cavity 15 to form a fire hole 102. The burner 100 has a simple structure and is easy to process and manufacture, thereby effectively reducing the manufacturing cost.

[0077] The first cavity 11 is formed by the first body 10 arching toward one side away from the second body 20, and the second cavity 21 is formed by the second body 20 arching toward one side away from the first body 10. After the first cavity 11 and the second cavity 21 are buckled with each other, the first part and the third part can form the air inlet 1011 of the cavity 101, and the second part and the fourth part can form the annular part 1012 of the cavity 101. By providing the air inlet 1011 connected with the annular part 1012, the flow path of the gas and the air in the cavity 101 can be effectively increased, so that the gas and the air can be fully mixed, thereby improving the combustion efficiency of the gas.

[0078] In addition, if Figure 4 and Figure 5 As shown, the first cavity 11 includes a first contraction section 111 and a first diffusion section 112, and the second cavity 21 includes a second contraction section 211 and a second diffusion section 212. When the first body 10 and the second body 20 are matched with each other, the first contraction section 111 and the second contraction section 211 are buckled together to form a contraction channel, and the first diffusion section 112 and the second diffusion section 212 are buckled together to form an expansion channel. From the gas-proximal end of the air inlet 1011 to the gas outlet 1032, the contraction channel and the expansion channel are sequentially connected to form a venturi tube structure. The contraction channel is used to squeeze the mixture of gas and air, so that the flow rate of gas and air can be increased, and the kinetic energy loss during the flow process can be effectively compensated.

[0079] It should be pointed out that the fire hole construction cavity 15 also has a variety of implementation methods. For example, the fire hole construction cavity 15 is formed on the second plate body 22; for example, the fire hole construction cavity 15 is formed on the first plate body 12; for example, part of the fire hole construction cavity 15 is formed on the first plate body 12, and another part of the fire hole construction cavity 15 is formed on the second plate body 22.

[0080] Furthermore, if Figure 1 , Figure 2 and Figure 7 As shown, the flow limiting structure 90 cooperates with the annular portion 1012 to form a return section 103, wherein the return section 103 has a return gas end 1031 and a gas outlet end 1032, and a contraction section 1033 and a diffusion section 1034 are sequentially arranged along the direction extending from the return gas end 1031 to the gas outlet end 1032, and the flow cross section of the contraction section 1033 is a gradually contracting structure, and the flow cross section of the diffusion section 1034 is a gradually expanding structure. When the gas flows in the annular portion 1012 and enters the return gas end 1031, the flow velocity will decrease. At this time, the return gas is squeezed by the gradually contracting structure, which can effectively increase the flow velocity of the gas, and then the gas flow velocity at the return end can be made the same or similar to the gas flow velocity at the gas outlet end 1032, and the burner 100 can also be effectively guaranteed to operate stably and efficiently. At the same time, the contraction section 1033 and the diffusion section 1034 are connected in sequence to form a venturi tube structure, which can effectively increase the kinetic energy of the gas at the gas outlet end 1032, so that it can impact the gas entering the annular portion 1012, thereby allowing the gas to be mixed again, which helps to further enhance the mixing effect of the gas, and disrupt the gas flow direction near the gas outlet end 1032, reduce the gas flow rate of the gas outlet near the gas outlet end 1032, and make the gas more evenly distributed in the annular portion 1012.

[0081] In an embodiment of the present application, the flow limiting structure 90 includes a first part and a second part. The first part is a first pressure profile 901 formed on the first body 10, and the first pressure profile 901 is formed by the first body 10 being recessed toward one side close to the second body 20. The second part is a second pressure profile 902 formed on the second body 20, and the second pressure profile 902 is formed by the second body 20 being recessed toward one side close to the first body 10. Specifically, the first pressure profile 901 and the second pressure profile 902 are arranged at intervals and form a reflow section 103. Since the first sheet metal part and the second sheet metal part are both plate-like structures, the first pressure profile 901 and the second pressure profile 902 can be formed by stamping, which helps to improve the convenience of processing and manufacturing of the burner 100, thereby further reducing the manufacturing cost.

[0082] It should be noted that, along the extension direction from the return end 1031 to the outlet end 1032, the return section 103 may be sequentially provided with a contraction section 1033, a flow limiting section 1035 and a diffusion section 1034. Among them, the flow cross section of the flow limiting section 1035 is smaller than the flow cross section of the annular portion 1012. The provision of the flow limiting section 1035 can effectively ensure the flow rate of the gas, while increasing the difficulty of the gas flowing out of the air inlet 1011 toward the return section 103, and ensuring the stability of the gas flow.

[0083] Still Figure 1 and Figure 2 As shown, the burner 100 further includes a first connection structure 30, the number of which is at least one, and the first connection structure 30 is used to connect and fix the first body 10 and the second body 20. The burner 100 has a plurality of first connection structures 30, and any two adjacent first connection structures 30 are arranged at intervals from each other. The arrangement of the first connection structure 30 is used to ensure that the connection between the first body 10 and the second body 20 can be implemented, and helps to ensure the connection effect of the first body 10 and the second body 20, and reduce the leakage of gas.

[0084] It should be pointed out that the first connection structure 30 also has a variety of embodiments. For example, the first connection structure 30 is formed on the radial inner side of the annular portion 1012; for example, the first connection structure 30 is formed on the radial outer side of the annular portion 1012; for example, multiple first connection structures 30 include two parts, one part is located on the radial inner side of the annular portion 1012, and the other part is located on the radial outer side of the annular portion 1012.

[0085] In the embodiment of the present application, the first connection structure 30 is arranged on the radial inner side of the annular portion 1012. Specifically, all the first connection structures 30 are arranged at intervals along the inner diameter circumferential direction of the annular portion 1012. Preferably, the spacing is arranged at equal intervals, and by limiting the plurality of first connection structures 30 and making the plurality of first connection structures 30 dispersedly arranged on the radial inner side of the annular portion 1012, it is helpful to enhance the connection strength between the first body 10 and the second body 20, thereby reducing the problem of deformation caused by stress concentration.

[0086] In addition, when the burner 100 is burning, the fire hole 102 ejects the gas and forms a flame by ignition. The temperature at the position of the fire hole 102 is relatively high. Under high temperature conditions, when the burner 100 is used for a long time, the burner 100 is easily deformed at the position of the fire hole 102. The first connection structure 30 is used to connect and fix the first body 10 and the second body 20, and by arranging the first connection structure 30 on the radial inner side of the burner 100 and arranging the position of the first connection structure 30 close to the position of the fire hole 102, the connection strength at the position of the fire hole 102 is further guaranteed, so as to reduce the deformation of the fire hole 102 due to high temperature during the use of the burner 100, thereby avoiding the adverse effects of the deformation of the fire hole 102 on the burner 100 (causing difficulty in fire transmission, flashback or flame separation, etc.).

[0087] Furthermore, a sealing structure 40 is provided on the radial outer side of the annular portion 1012. The sealing structure 40 is used to prevent leakage of the gas in the cavity 101. On the radial inner side of the annular portion 1012, the fire hole structure cavity 15 abuts against the second plate body 22 and encloses a plurality of fire holes 102 to ensure that the gas can be output from the radial inner side of the annular portion 1012. At the same time, on the radial outer side of the annular portion 1012, the sealing structure 40 can be provided to effectively prevent the gas in the cavity 101 from flowing out from the radial outer side of the annular portion 1012, thereby helping to improve the safety of the burner 100.

[0088] It should be pointed out that the sealing structure 40 can adopt a method of fitting the first plate body 12 and the second plate body 22 together and fixing them through other connecting parts, or a connection method of cooperating between grooves and protrusions, or the first plate body 12 and the second plate body 22 can be fitted together and connected and fixed by wrapping and locking them through a flange structure.

[0089] In some embodiments of the present application, the sealing structure 40 is a flange structure formed on the edge of the first body 10. Specifically, the extension length of the first plate body 12 located radially outside the first cavity 11 is longer than the extension length of the second plate body 22 located radially outside the second cavity 21. Since the first body 10 and the second body 20 are both sheet metal parts, the second plate body 22 can be wrapped in the second plate body 22 by flanging the sheet metal, thereby achieving a sealed connection between the first body 10 and the second body 20. The processing method is simple, easy to manufacture, and helps to reduce manufacturing costs.

[0090] Furthermore, if Figure 1 and Figure 6As shown, the multiple fire holes 102 of the burner 100 include a plurality of main fire holes 1021 and a plurality of secondary fire holes 1022, wherein the multiple main fire holes 1021 are arranged at intervals on the burner 100, and a secondary fire hole 1022 is arranged between two adjacent main fire holes 1021, and at the position where the first connecting structure 30 is located, the secondary fire hole 1022 is blocked by the first connecting structure 30, that is, at the connection position of the first body 10 and the second body 20, the first connecting structure 30 blocks the connection between the fire hole 102 and the cavity 101.

[0091] It should be understood that when the first connecting structure 30 is in the position where it blocks the secondary fire hole 1022, the gas cannot be ejected through the secondary fire hole 1022, which may easily cause the burner 100 to fail to operate. Therefore, a plurality of second fire transfer channels are provided on the shell, and the second fire transfer channels are used to connect the cavity 101 and the blocked fire hole 102. By providing the second fire transfer channels on the shell, it helps to reduce the impact of the first connecting structure 30 on the combustion process, thereby ensuring that the burner 100 can operate stably and efficiently.

[0092] Specifically, during use of the burner 100, the gas in the annular portion 1012 is ejected through the main fire hole 1021 and the secondary fire hole 1022, respectively, and the ejected gas is ignited to generate flames, thereby providing heat for the cooking process. Among them, the flow cross-section of the main fire hole 1021 is larger than the flow cross-section of the secondary fire hole 1022, and the secondary fire hole 1022 is arranged between two adjacent main fire holes 1021 (the distance between the secondary fire hole 1022 and the two adjacent main fire holes 1021 can be equal or unequal. In this embodiment, the distance between the main fire hole 1021 and the two adjacent main fire holes 1021 is equal). The second fire transfer flow channel allows the gas to be ejected through the secondary fire hole 1022, which helps to ensure that the fire transfer operation can be performed between the two adjacent fire holes 102, so as to ensure that the burner 100 can fully burn.

[0093] It should be noted that any fire hole 102 has an input end and an output end, wherein the output end has an output direction, which is set at an acute angle with the gas flow direction near the input end, which helps to ensure the output efficiency of the gas, and further helps to ensure the combustion effect of the burner 100. At the same time, the output direction is set at an acute angle with the direction of the input end facing the center of the annular portion (the radial direction of the annular portion 1012), which helps to form a swirl flame, further ensuring that the flame transfer between two adjacent fire holes 102 can be implemented, and ensuring that the burner 100 can achieve full combustion.

[0094] Furthermore, if Figure 6As shown, the secondary fire hole 1022 has a connection position with the cavity 101 before being blocked, and the position of the first connection structure 30 is located at the connection position. Specifically, the position of the first connection structure 30 is the root of the secondary fire hole 1022 (the connection position of the main fire hole 1021 and the cavity 101). By setting the first connection structure 30 at the root of the secondary fire hole 1022, while the first body 10 and the second body 20 are connected and fixed by the first connection structure 30, the positional relationship between the first connection structure 30 and the fire hole 102 and the cavity 101 can be taken into account, so that the position of the first connection structure 30 can not only enhance the strength of the position of the fire hole 102, but also increase the strength of the position of the cavity 101, thereby improving the overall structural strength of the burner 100 and ensuring that the burner 100 can be used stably and safely.

[0095] It should be noted that setting the first connecting structure 30 at the root of the secondary fire hole 1022 (the connecting position between the main fire hole 1021 and the cavity 101) can reduce the adverse effects of the first connecting structure 30 on the cavity 101 and ensure the smooth flow of gas in the cavity 101.

[0096] In some embodiments of the present application, the second fire transfer channel is a fire transfer groove 25 provided on the second body 20. The fire transfer groove 25 is formed by the second body 20 arching toward the side away from the first body 10, and the fire transfer groove 25 is an arc-shaped structure as a whole. Both ends of the fire transfer groove 25 are respectively connected to the second cavity 21, and when the first body 10 and the second body 20 are connected, both ends of the fire transfer groove 25 are respectively connected to the main fire holes 1021 on the adjacent two sides of the first connection structure 30, and the middle of the fire transfer groove 25 is connected to the secondary fire hole 1022 blocked by the first connection structure 30.

[0097] Here, it should be noted that the structure of the fire transfer groove 25 can be set to other shapes, such as a straight line segment, and in this case, the fire transfer groove 25 is set on one side of the first connecting structure 30, and one end of the fire transfer groove 25 is connected to the second cavity 21, and the other end of the fire transfer groove 25 is connected to the auxiliary fire hole 1022 blocked by the first connecting structure 30 when the first body 10 and the second body 20 are connected; for another example, the fire transfer groove 25 is set as a combined structure, such as including two sections of the groove body, and the two sections of the groove body are set at an angle. Of course, the fire transfer groove 25 can also be set on the first body 10, and the specific position and shape can refer to the above content.

[0098] In some examples of this embodiment, Figures 3 to 6As shown, the first connecting structure 30 includes a first connecting part 13 and a second connecting part 23, the first connecting part 13 is arranged on the first body 10, and the second connecting part 23 is arranged on the second body 20, wherein one of the second connecting part 23 and the first connecting part 13 is a protrusion structure, and the other of the second connecting part 23 and the first connecting part 13 is a hole structure, and the protrusion structure passes through the hole structure and is riveted to fit, so that the first body 10 and the second body 20 are connected and fixed.

[0099] Specifically, in this example, the second connection portion 23 is a protrusion structure, and the first connection portion 13 is a hole structure. When the first body 10 is connected and fixed with the second body 20, the first body 10 is placed against the second body 20, and the protrusion structure passes through the hole structure, and the part of the protrusion structure passing through the hole structure is riveted by a riveting setting. The riveting fixing method has a simple structure and is easy to process. In addition, the riveting structure has high strength and good stability, which can further increase the strength of the fire hole 102 and further reduce the deformation of the fire hole 102 caused by high temperature.

[0100] It should be noted that the protruding structure is formed on the second body 20, and the protruding structure can be an integral structure with the second body 20, or a separate structure with the second body 20 (connected and fixed by welding or bonding). Figure 6 As shown, in this example, a protruding structure is formed on the second plate body 22, and the protruding structure is a flanged hole, which has a flange in the thickness direction of the second body 20. The height of the flange is greater than the depth of the hole structure to ensure that the flange can pass through the flanged hole, thereby ensuring the effective implementation of riveting fixation. The flanged hole has a simple structure and can be processed and manufactured by stamping, that is, the corresponding connection structure is formed by utilizing the structure of the second body 20 itself, thereby saving connecting parts and reducing the manufacturing cost of the product.

[0101] In addition, in this example, the hole of the first connecting portion 13 is a circular hole, the flange hole is also a circular hole, and the flange is a cylindrical structure, wherein the outer diameter of the cylindrical structure is smaller than the diameter of the hole structure, so as to ensure that the flange can smoothly pass through the hole structure, so that the installation process of the first body 10 and the second body 20 can be smoothly implemented. Of course, in addition to the above-mentioned circular hole structure, it can also be set as a directional hole or a special-shaped hole, which is not limited here.

[0102] Furthermore, if Figures 4 to 5As shown, the first connecting portion 13 is formed on the first body 10 and is arranged as a hole structure, the second connecting portion 23 is formed on the second body 20 and is arranged as a flanged hole structure, and at the same time, an avoidance structure is also provided on the shell, which includes a first avoidance portion 14 arranged on the first body 10, and a second avoidance portion 24 arranged on the second body 20, wherein the first avoidance portion 14 is located radially outside the hole structure and is arranged circumferentially of the hole, and the second avoidance portion 24 is located radially outside the flanged hole structure and is arranged circumferentially of the flanged hole.

[0103] Specifically, when the first body 10 is connected and fixed with the second body 20, the first body 10 is pressed against the top of the second body 20, the flange of the flange hole passes through the hole structure on the first body 10, and the part of the flange passing through the hole structure is flattened by the riveting equipment so that it abuts against the avoidance structure, thereby forming the first connection structure 30 (a structure formed after the hole structure and the flange of the flange hole are riveted), thereby achieving the connection and fixation of the first body 10 and the second body 20. By providing the avoidance structure, and the avoidance structure is arranged around the circumference of the first connection structure 30, there is enough space for riveting around the first connection structure 30, so as to ensure that the riveting equipment can effectively perform the riveting operation, thereby ensuring the connection and fixation of the first body 10 and the second body 20.

[0104] Furthermore, a first blocking structure 60 is provided on the second body 20 , wherein the first blocking structure 60 is provided radially inside the annular portion 1012 , extends along a preset direction, and is spaced apart from the plurality of fire holes 102 to form a first fire transfer channel.

[0105] Specifically, Figure 3 , Figure 5 and Figure 6 As shown, a first blocking structure 60 is provided on the second plate body 22 of the second main body 20. The first blocking structure 60 is located on the output side of the multiple fire holes 102, that is, the radial inner side of the annular portion 1012. At the same time, the extension direction of the first blocking structure 60 is consistent with the spacing direction (preset direction) of the multiple fire holes 102. The first blocking structure 60 is spaced apart from the multiple fire holes 102, and the space between them is the first fire transfer channel.

[0106] Specifically, the first blocking structure 60 is arranged on the output side of multiple fire holes 102, and the extension direction of the first blocking structure 60 is set at an angle to the ejection direction of the gas through the fire holes 102. When the burner 100 is in use, the gas in the cavity 101 is ejected through the fire holes 102, and the ejected gas is ignited at the position of a certain fire hole 102. The ignited gas burns to form a flame. When the flame passes through the first fire transfer channel, part of the flame will be intercepted by the first blocking structure 60, and the intercepted flame will flow along the opposite sides or one side of the first fire transfer channel. The flowing flame is used to ignite the gas ejected from the adjacent fire holes 102, thereby realizing the fire transfer operation between the adjacent fire holes 102, thereby ensuring that the burner 100 can burn fully.

[0107] It should be understood that the first blocking structure 60 and the track formed by the plurality of fire holes 102 are arranged at equal intervals to ensure that the first fire transfer flow path formed by the first blocking structure 60 has stable fire transfer performance, thereby ensuring the effectiveness of fire transfer. At the same time, the first blocking structure 60 can also play a flow blocking role for the flame. After the flame passes through the first blocking structure 60, the flow rate will decrease and flow to both sides, which helps to stabilize the flame near the exit of the fire hole 102.

[0108] Furthermore, if Figure 6 As shown, there is a spacing distance between the fire hole 102 and the first blocking structure 60, and the spacing distance is not less than 3 mm and not more than 5 mm. The specific value can be 3 mm, 3.5 mm, 4 mm, 4.5 mm...5 mm.

[0109] Specifically, by setting the spacing distance between the fire hole 102 and the first blocking structure 60, the width of the first fire transfer channel is effectively set, thereby ensuring that there is sufficient flame to flow in the first fire transfer channel, thereby ensuring the effectiveness of fire transfer in the first fire transfer channel, so that the burner 100 can operate stably and efficiently.

[0110] Further, the first body 10 is arranged on the top of the second body 20, and the thickness direction of the second body 20 is the arrangement direction of the first body 10 and the second body 20. In the thickness direction of the second body 20, the first blocking structure 60 has a protrusion height, and the value of the protrusion height is not less than 0.8mm and not more than 105mm, and the specific value can be 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm...1.5mm. At the same time, along the radial direction of the annular portion 1012, the first blocking structure 60 has an extension width, and the value of the extension width is not less than 1mm and not more than 3mm, and the specific value can be 1mm, 1.5mm, 2mm, 2.5mm...3mm.

[0111] Specifically, in the arrangement direction of the first body 10 and the second body 20, the bottom of the first blocking structure 60 is flush with the bottom of the fire hole 102, and the top of the first blocking structure 60 is extended in the direction of the first body 10. By setting the first blocking structure 60, the first blocking structure 60 can divert and block the flame formed by the gas ejected from the fire hole 102, a part of which enters the first fire transfer channel and is used for fire transfer between the fire holes 102, and the other part is used to provide heat for the cooking process.

[0112] It should be understood that when the extension dimension of the first blocking structure 60 is greater than 1.5 mm in the arrangement direction of the first body 10 and the second body 20, the first blocking structure 60 formed at this time is larger in size, which will cause most of the flame to be blocked in the first fire transfer channel, thereby resulting in a smaller amount of flame used for external heating, which is not conducive to improving the performance of the burner 100.

[0113] In some embodiments of the present invention, Figure 2 and Figure 5 As shown, the first blocking structure 60 is formed on the second body 20, and the first blocking structure 60 is a first protruding structure protruding toward one side of the first body 10. Specifically, by setting the first blocking structure 60 as the first protruding structure, the connection strength between the first blocking structure 60 and the second body 20 is increased, and the deformation of the first blocking structure 60 due to high temperature during the combustion process of the burner 100 is reduced, and the fire transfer effect of the first fire transfer flow channel is further guaranteed. At the same time, the first protruding structure also helps to improve the overall structural strength of the second body 20, and reduces the problem of deformation of the second body 20 during the combustion process of the burner 100.

[0114] It should be pointed out that the first protrusion structure is formed on the second body 20 and is an integral structure with the second body 20. In the embodiment of the present utility model, the protrusion is formed on the second body 20 by stamping to ensure the structural stability between the first protrusion structure and the second body 20.

[0115] Furthermore, the burner 100 further includes a flow guide structure 50, which is arranged on the shell, and has a flow guide plate 501 and air vents 502 arranged on the flow guide plate 501. At least part of the flow guide plate 501 is located on the side of the plurality of fire holes 102 away from the annular portion 1012, that is, at least part of the flow guide plate 501 is located on the radial inner side of the annular portion 1012. The air vents 502 are arranged concentrically with the annular portion 1012, and the flow guide plate 501 is used to guide the smoke formed after the combustion of the gas ejected from the plurality of fire holes 102 to flow toward the air vents 502.

[0116] It should be noted that the gas ejected from each fire hole 102 generates flames after being ignited, and smoke after the combustion of the gas ejected from the fire hole 102 will flow to the vent hole 502 under the action of the guide plate 501, and finally flow to the outside of the cooking appliance through the vent hole 502. The provision of the guide plate 501 can extend the flow path of the high-temperature smoke generated by the flame to the vent hole 502, thereby extending the flow time of the high-temperature smoke, thereby ensuring the baking or heating effect of the burner 100 on the cooking item.

[0117] Specifically, the guide plate 501 is arranged on the second body 20, and the guide plate 501 has a connection section connected to the second body 20, and a protruding body converging toward the center of the annular portion 1012. At the same time, the protruding body protrudes toward the side away from the first body 10 to form a guide space, and the guide space is truncated as a whole. The vent hole 502 is arranged in the middle of the guide plate 501 and is concentric with the annular portion 1012, which helps to ensure that the high-temperature flue gas generated by the output of the annular portion 1012 flows in the same path to the vent hole 502, thereby further ensuring the stability of the combustion of the gas burner.

[0118] In some embodiments of the present invention, Figure 1 , Figure 3 and Figure 7 As shown, the guide structure 50 is formed on the second body 20, and the guide structure 50 is a protruding structure protruding toward the side away from the first body 10. By setting the guide structure 50 as a protruding structure, it is helpful to ensure the guide effect of the guide structure 50 and the stability of the gas during combustion. At the same time, the concave structure also helps to improve the overall structural strength of the second body 20, reducing the problem of deformation of the second body 20 during the combustion of the burner 100.

[0119] It should be pointed out that the guide structure 50 is formed on the second body 20 and is an integrated structure with the second body 20 . In the embodiment of the utility model, it is a protrusion formed on the second body 20 by stamping to ensure the structural stability between the protruding structure and the second body 20 .

[0120] Furthermore, if Figure 1 , Figure 3 and Figure 4 As shown, a mounting portion 16 is provided on the housing, and the mounting portion 16 is used to fix the burner 100 on the cooking utensil. Specifically, the mounting portion 16 is provided on the first body 10, and the mounting portion 16 includes an extension section extending toward the second body 20 and a fixing section provided on the extension section, and the fixing section is used to be fixedly connected to the cooking utensil. The length of the extension section is used to adjust the fixing position of the burner 100.

[0121] It should be noted that the mounting portion 16 is formed on the first body 10 and is an integral structure with the first body 10. In the embodiment of the present utility model, the mounting portion 16 is a mounting structure formed on the first body 10 by stamping to ensure that the mounting portion 16 can be fixedly connected to the cooking utensil. Of course, in addition to this, the mounting portion 16 can also be set on the second body.

[0122] In addition, further, if Figure 1 , Figure 4 and Figure 5 As shown, the burner 100 further includes a second connection structure 70, which is arranged on the housing and used to fix the mounting frame 600. By setting the second connection structure 70 to fix the mounting frame 600, the electronic igniter and the thermocouple can be fixedly installed to ensure that the burner 100 can ignite the ejected gas.

[0123] It should be pointed out that a third connecting part 701 is provided on the first body 10, and a fourth connecting part 702 is provided on the second body 20, and the third connecting part 701 and the fourth connecting part 702 cooperate to form a second connecting structure 70, wherein the third connecting part 701 has the same structure as the first connecting part 13, and the fourth connecting part 702 has the same structure as the second connecting part 23. For details, please refer to the implementation of the first connecting part 13 and the second connecting part 23. At this time, the mounting frame 600 is mounted and fixed on the flange hole, and the specific implementation of the third connecting part 701 and the fourth connecting part 702 will not be repeated in the utility model.

[0124] like Figures 8 to 11 As shown, the utility model also proposes a cooking appliance, which includes the burner 100 as above.

[0125] Specifically, the burner 100 is fixed on the cooking utensil through the mounting portion 16. The burner 100 has a fire hole 102 and a cavity 101 formed between the first body 10 and the second body 20, wherein the cavity 101 has an air inlet portion 1011 and an annular portion 1012. After the gas from the gas pipe 500 enters the cavity 101, it can be ejected through the fire hole 102 and ignited to realize the combustion of the burner 100. During the flow of the burner 100 in the annular portion 1012, the flow limiting structure 90 located in the annular portion 1012 can effectively adjust the flow rate and flow velocity of the gas by reducing the flow cross-section of the annular portion 1012, thereby making the flow velocity of each outlet on the annular portion 1012 uniform, which helps to improve the stability of gas combustion.

[0126] In the embodiment of the present application, the cooking appliance includes a box 200, a fan assembly 300 is arranged on the top of the box 200, and the fan assembly 300 is used to extract the smoke inside the box 200. The box 200 has a cavity 101 inside, a burner 100 is fixedly connected to the top of the cavity 101, and a tray 400 is arranged below the burner 100. Among them, the air inlet 1011 of the burner 100 extends to the outside of the box 200. A gas pipe 500 is arranged outside the box 200. Fig.11 As shown, the output end of the gas pipe 500 is spaced apart from the inlet end of the inlet portion 1011. After the gas is output from the gas pipe 500, it will draw in the air and mix with the air before entering the cavity 101, then flow clockwise in the cavity 101, and finally flow out from the fire hole 102 and be ignited and burned, forming a swirling annular flame, which helps to ensure the use effect of the cooking appliance.

[0127] In this embodiment, the cooking utensil is a gas oven 1000 (in other embodiments, the cooking utensil is a gas stove, etc.). For the structure of other parts of the gas oven 1000, please refer to the prior art, and this application will not elaborate on them here.

[0128] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A burner, characterized in that: The burner comprises: A shell, the shell having a cavity and a plurality of fire holes, the cavity comprising an air inlet portion and an annular portion which are connected, the air inlet portion being used to communicate with a gas pipeline, the plurality of fire holes being arranged at intervals along a preset direction, the plurality of fire holes being arranged radially inward of the annular portion and respectively connected with the annular portion, and the plurality of fire holes being used to eject gas; A flow limiting structure is arranged inside the annular portion, the flow limiting structure is arranged on one side of the intersection of the air inlet portion and the annular portion, and the flow limiting structure is used to reduce the flow cross-section of the annular portion.

2. The burner according to claim 1, characterized in that The shell includes a first body and a second body, the first body and the second body together form the cavity and the multiple fire holes, the flow limiting structure cooperates with the annular portion to form a return section, the return section has a return air end and an air outlet end, the return section is sequentially provided with a contraction section and a diffusion section along the direction extending from the return air end to the air outlet end, and the flow cross-section of the contraction section is a gradually contracting structure, and the flow cross-section of the diffusion section is a gradually expanding structure.

3. The burner according to claim 2, characterized in that: The current limiting structure comprises: A first portion, wherein the first portion is a first profile formed on the first body; The second part is a second pressure profile formed on the second body, and the first pressure profile and the second pressure profile are arranged at an interval to form the reflux section.

4. The burner according to claim 2, characterized in that: The burner further includes at least one first connection structure, and the first body and the second body are connected to each other through the at least one first connection structure.

5. The burner according to claim 4, characterized in that The first connection structure is disposed radially inward of the annular portion.

6. The burner according to claim 5, characterized in that A sealing structure is disposed between the first body and the second body, and the sealing structure is disposed radially outside the annular portion.

7. The burner according to claim 6, characterized in that The sealing structure is a flange structure formed on the edge of the first body.

8. The burner according to claim 4, characterized in that At the connection position between the first body and the second body, the first connection structure blocks the connection between the fire hole and the cavity, and the shell is provided with a plurality of second fire transfer channels, which are used to connect the cavity and the blocked fire hole.

9. The burner according to claim 4, characterized in that A first blocking structure is provided on the second body, and the first blocking structure is arranged on the radial inner side of the annular portion. The first blocking structure extends along the preset direction and is spaced apart from the multiple fire holes. The area spaced apart from the first blocking structure and the multiple fire holes constitutes a first fire transfer channel.

10. The burner according to claim 1, characterized in that The burner also includes a guide structure, which is arranged on the shell, and the guide structure has a guide plate, and air holes are opened on the guide plate. At least part of the guide plate is located on the side of the multiple fire holes away from the annular portion, and the air holes are concentrically arranged with the annular portion. The guide plate is used to guide the smoke formed after the combustion of the gas ejected from the multiple fire holes to flow to the air holes.

11. The burner according to claim 1, characterized in that The housing is provided with a mounting portion.

12. A cooking utensil, characterized in that: The cooking appliance comprises a burner according to any one of claims 1 to 11.

Images