Burner and cooking utensil

Abstract

The utility model discloses a burner and a cooking utensil. The burner comprises a first body, a second body and a second blocking structure. The first body and the second body define 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 communicating mode, the gas inlet part is used for being communicated with a gas pipeline, the fire holes are formed in the preset direction at intervals, are formed in the radial inner side of the annular part and are communicated with the annular part, and the fire holes are used for spraying out gas. The second blocking structure is arranged in the annular part and forms a flow limiting channel communicating the annular part with the multiple fire holes, the second blocking structure is provided with a first end and a second end which extend in the preset direction, and the first end and the second end are arranged on the two opposite sides of the junction of the air inlet part and the annular part correspondingly. According to the burner, due to the fact that the second blocking structure is arranged, the gas output flow speed of the fire holes in the junction of the gas inlet part and the annular part can be reduced, and the output flow speed of the fire holes in the annular part is made to be uniform.

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, the burner comprising a first body and a second body, the first body and the second body together form a cavity and a plurality of fire holes, the cavity comprising an air inlet portion and an annular portion connected and arranged, the air inlet portion is used to communicate with a gas pipeline, the plurality of fire holes are arranged at intervals along a preset direction, the plurality of fire holes are arranged on the radial inner side of the annular portion and are respectively connected with the annular portion, and the plurality of fire holes are used for ejecting gas;

[0008] The burner also includes a second blocking structure, which is arranged inside the annular portion and forms a flow limiting channel connecting the annular portion and the multiple fire holes. The second blocking structure has a first end and a second end extending along the preset direction, and the first end and the second end are respectively arranged on opposite sides of the intersection of the air inlet portion and the annular portion.

[0009] According to the burner of the utility model, the first body and the second body are connected and fixed to each other, and the fire hole and the cavity are formed between the first body and the second body, wherein the cavity has an air inlet and an annular portion, and the gas of the gas pipeline can be ejected through the fire hole after entering the annular portion, and the combustion of the burner is realized by ignition. By locating the second blocking structure inside the annular portion, a flow limiting channel can be formed in cooperation with the annular portion, and at the same time, the first end and the second end of the second blocking structure are respectively arranged on opposite sides of the intersection of the air inlet and the annular portion. During the flow of the gas, the second blocking structure can block the gas flowing from the inlet into the annular portion to reduce the gas output flow rate from the annular portion to the fire hole at the intersection. At the same time, the setting of the second blocking structure can also speed up the flow of the gas to other positions, which helps to even out the gas output flow rate of each fire hole on the annular portion, thereby helping to solve the problem of poor combustion stability of the existing burner.

[0010] In addition, the burner according to the utility model may also have the following additional technical features:

[0011] In some embodiments of the present invention, the second blocking structure is a minor arc structure.

[0012] In some embodiments of the present invention, the second blocking structure includes:

[0013] a first portion, wherein the first portion is a first protruding structure formed on a side surface of the first body facing the second body;

[0014] The second part is a second protruding structure formed on the side of the second body facing the first body, and the first protruding structure and the second protruding structure are arranged at an interval to form the flow limiting channel.

[0015] In some embodiments of the present invention, the first body has a first mold cavity, the second body has a second mold cavity, the first mold cavity and the second mold cavity are snapped together to form the receiving cavity, the first mold cavity and the second mold cavity are snapped together to form the receiving cavity, the first protrusion structure is formed on the first mold cavity, and the second protrusion structure is formed on the second mold cavity.

[0016] In some embodiments of the present invention, the first body and the second body are connected to each other through at least one first connecting structure, the first connecting structure is arranged on the inner side of the annular portion, and the second blocking structure passes through at least one of the first connecting structures.

[0017] 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 second fire transfer channel is provided on one of the first body and the second body, and the second fire transfer channel is arranged on one side of the first connection structure, and the second fire transfer channel is used to connect the cavity and the blocked fire hole.

[0018] In some embodiments of the utility model, the fire hole has an air inlet end, an air outlet end, and a flow duct extending along a first direction, the air outlet end is connected to the cavity through the flow duct and the air inlet end, the first direction is set at an acute angle to the second direction, and the second direction is the radial direction of the annular portion.

[0019] In some embodiments of the present invention, the second fire transfer channel is a fire transfer groove formed on the second body, and when the first body and the second body are connected to each other, the fire transfer groove is connected to the blocked fire hole.

[0020] 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.

[0021] In some embodiments of the present invention, a mounting portion is provided on the first body or the second body.

[0022] A second aspect of the present invention provides a cooking appliance, which comprises the burner as described above.

[0023] According to the cooking utensil of the utility model, the first body and the second body of the burner are connected and fixed to each other, wherein the fire hole and the cavity are formed between the first body and the second body, and the gas of the gas pipeline can be ejected through the fire hole after entering the cavity, and the combustion of the burner is realized by ignition. During the flow of the gas, a second blocking structure is provided inside the annular portion so as to block the gas flowing from the conducting portion to the annular portion, thereby reducing the gas output flow rate of the fire hole near the intersection. At the same time, the provision of the second blocking structure can also speed up the flow rate of the gas to other positions, which helps to even out the gas output flow rate of each fire hole on the annular portion and ensure the stability of the burner combustion. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 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:

[0025] 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 schematically shown (the burner is the first embodiment, and the thick black arrow line in the figure is the flow direction of the gas);

[0026] Figure 2 for Figure 1 The schematic diagram of the structure of the burner shown in FIG. 1 at a certain viewing angle (the thick black arrow line in the figure indicates the direction of gas flow);

[0027] Figure 3 for Figure 1 Schematic diagram of the exploded structure of the burner shown in;

[0028] Figure 4 for Figure 1 A schematic diagram of the structure of the first body shown in ;

[0029] Figure 5 for Figure 4 FIG. 1 is a schematic diagram of the enlarged structure of part A of the first body shown in FIG.

[0030] Figure 6 for Figure 1 A schematic diagram of the structure of the second body shown in ;

[0031] Figure 7 for Figure 1 A schematic structural diagram of the burner shown in FIG. 1 from a third viewing angle;

[0032] Figure 8 for Figure 7 A partial cross-sectional schematic diagram of the burner in the BB direction shown in FIG.

[0033] Fig. 9 Schematically shows a simulation analysis diagram of a burner according to an embodiment of the utility model (the burner is a second embodiment);

[0034] Fig.10 The schematic diagram shows a partial structure of a cooking tool according to an embodiment of the utility model at a certain viewing angle;

[0035] Fig.11 for Fig.10 A schematic diagram of a partial structure of a cooking tool shown in another perspective (the thick black arrow line in the figure indicates the flow direction of high-temperature smoke);

[0036] Fig.12 for Fig.10 A schematic diagram of a partial structure of a cooking tool shown in FIG. 1 from a third viewing angle;

[0037] Fig.13 for Fig.12 FIG. 1 is a schematic diagram of the enlarged structure of part C of the cooking tool 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;

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

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

[0044] 10. The first ontology;

[0045] 11. first cavity; 12. first plate body; 13. first connecting portion; 14. first avoidance portion; 15. fire hole structural cavity; 16. mounting portion;

[0046] 111, first contraction section; 112, first diffusion section; 113, first mixing section;

[0047] 20. Second entity;

[0048] 21. second cavity; 22. second plate body; 23. second connecting portion; 24. second avoidance portion; 25. fire transfer groove;

[0049] 211, second contraction section; 212, second diffusion section; 213, second mixing section;

[0050] 30. A first connection structure;

[0051] 40. Sealing structure;

[0052] 50. Diversion structure;

[0053] 501, guide plate; 502, vent hole;

[0054] 60. A first blocking structure;

[0055] 70. A second connection structure;

[0056] 701, third connection part; 702, fourth connection part;

[0057] 80. A second blocking structure;

[0058] 801, a first protruding structure; 802, a second protruding structure. DETAILED DESCRIPTION

[0059] 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.

[0060] It should be understood that the terms used herein 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 herein 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.

[0061] 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.

[0062] 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 upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0063] like Figure 1 As shown in the figure, according to the embodiment of the utility model, a burner 100 is proposed, which is used to be arranged on a cooking utensil, and specifically includes a shell and a flow limiting structure. Among them, the shell has a cavity 101 and a fire hole 102, and the gas pipe 500 can be connected to the cavity 101. At the same time, the number of the fire holes 102 is multiple, 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 ejected through the fire hole 102.

[0064] 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 pipe 500. 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.

[0065] Furthermore, the second blocking structure 80 is arranged inside the annular portion 1012 and forms a flow limiting channel, which connects the annular portion 1012 with the multiple fire holes 102. At the same time, the second blocking structure 80 has a first end and a second end extending along a preset direction, and the first end and the second end are respectively arranged on opposite sides of the intersection of the air inlet portion 1011 and the annular portion 1012.

[0066] Specifically, the first body 10 and the second body 20 are connected and fixed to each other and enclose the fire hole 102 and the cavity 101, wherein the cavity 101 has an air inlet 1011 and an annular portion 1012, and the gas of the gas pipe 500 enters the annular portion 1012 from the air inlet 1011 and then sprays out through the fire hole 102, and the combustion of the burner 100 is realized by ignition, and the second blocking structure 80 is located inside the annular portion 1012 to form a flow-limiting channel connecting the annular portion 1012 and the plurality of fire holes 102. During the flow of the gas, the second blocking structure 80 can block the gas flow to reduce the gas output flow rate of the plurality of fire holes 102 near the intersection of the inlet and the annular portion 1012. At the same time, accelerating the flow of the gas to other positions helps to even out the gas output flow rate of each fire hole 102 on the annular portion 1012, and ensure the combustion stability of the burner 100.

[0067] It is important to understand that Figure 1 and Figure 2 As 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 a swirling annular flame. Since the gas flows faster when it flows from the air inlet 1011 to the annular portion 1012, the second blocking structure 80 is provided at the intersection of the air inlet 1011 and the annular portion 1012 to reduce the gas flow rate from the cavity 101 to the fire hole 102 at the intersection, so that the reduced gas flow rate is the same or similar to the gas flow rate at other positions of the annular portion 1012 (the gas flow rate from the cavity 101 to the fire hole 102), thereby achieving a uniform output flow rate of the fire holes 102 at each location, and ensuring the combustion stability of the burner 100.

[0068] 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 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.

[0069] 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 pipe 500 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.

[0070] In the embodiment of the present application, the gas outlet of the air inlet 1011 is arranged tangentially to the annular portion 1012, and the air inlet 1011 is arranged tangentially to the annular portion 1012 along the flow direction of the gas (the arrow direction shown in the figure is the flow direction of the gas), which can effectively reduce the collision of the gas with the inner wall of the annular portion 1012 when entering the annular portion 1012, thereby reducing the kinetic energy loss of the gas mixture. At the same time, the second blocking structure 80 is arranged at the intersection of the air inlet 1011 and the annular portion 1012, and the first end of the second blocking structure 80 is located upstream of the intersection, and the second end of the second blocking structure 80 is located downstream of the intersection, which helps to reduce the gas output flow rate from the intersection cavity 101 to the fire hole 102. Moreover, the second blocking structure 80 is extended along the preset direction, which can also guide the gas at the intersection to flow quickly to other positions.

[0071] Furthermore, if Figures 3 to 6 As 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.

[0072] 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.

[0073] 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 meet the need to set 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 need to set the following guide structure 50, sealing structure 40 and first fire transfer flow channel. 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 are buckled together to form a cavity 101, the trough position of the corrugated structure fire hole construction cavity 15 is 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.

[0074] 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.

[0075] 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 102 is pressed) 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.

[0076] 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.

[0077] In addition, if Figure 4 and Figure 6 As shown, the first part includes a first contraction section 111, a first mixing section 113 and a first diffusion section 112, and the second part includes a second contraction section 211, a second mixing section 213 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, the first mixing section 113 and the second mixing section 213 are buckled together to form a mixing 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, the contraction channel, the mixing 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.

[0078] 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.

[0079] Furthermore, if Figure 1 and Figure 2 As shown, the second blocking structure 80 is a minor arc structure. Specifically, the second blocking structure 80 is arranged inside the annular portion 1012 and extends along a preset direction, which can not only effectively reduce the flow cross section of the annular portion 1012, but also guide the flow of the gas to ensure the flow rate of the gas in the annular portion 1012. Under the flow limiting and diversion effects of the second blocking structure 80, the output flow rates of each fire hole 102 are the same or similar.

[0080] In the embodiment of the present application, the second blocking structure 80 is arranged on the inner side of the annular portion 1012 and between the annular portion 1012 and each fire hole 102. The second blocking structure 80 forms a limited flow channel, which can reduce the gas output flow rate from the annular portion 1012 to the fire hole 102. The first end of the second blocking structure 80 is located upstream of the intersection, and at the same time, the second end of the second blocking structure 80 extends to the position where the annular portion 1012 and the air inlet portion 1011 are tangent, that is, it is downstream of the intersection, so the extension length of the second blocking structure 80 can be 1 / 5 to 1 / 3 of the inner diameter of the annular portion 1012, and the whole presents a minor arc structure. The second blocking structure 80 is extended along a preset direction, which can effectively reduce the flow cross section at the intersection of the annular portion 1012 and the air inlet portion 1011, and help the gas to quickly flow through the second blocking structure 80. After the gas flows through the second blocking structure 80 , the flow cross section of the annular portion 1012 becomes larger, which helps to further increase the flow rate of the gas, thereby ensuring that the gas output flow rates of each fire hole 102 of the annular portion 1012 are the same or similar.

[0081] Further, the second blocking structure 80 includes a first portion and a second portion, wherein the first portion is a first protruding structure 801 formed on the side of the first body 10 facing the second body 20. The second portion is a second protruding structure 802 formed on the side of the second body 20 facing the first body 10, and the first protruding structure 801 and the second protruding structure 802 are spaced apart to form a flow limiting channel.

[0082] Specifically, the first part is arranged on the radial inner side of the first body 10, and the second part is arranged on the radial inner side of the second body 20. After the first body 10 and the second body 20 are buckled together, the first part and the second part cooperate to form a flow limiting channel similar to a minor arc structure. By utilizing the connection between the first body 10 and the second body 20, the second blocking structure 80 is arranged inside the annular portion 1012, the structure is relatively simple, easy to process and manufacture, and can effectively reduce the manufacturing cost of the burner 100.

[0083] In an embodiment of the present application, the first part is a first protruding structure 801 formed by arching one side of the first body 10 facing the second body 20, and the second part is a second protruding structure 802 formed by arching one side of the second body 20 facing the first body 10, wherein the first protruding structure 801 is arranged at the connection between the first cavity 11 and the first plate body 12 and extends toward the first cavity 11, and the second protruding structure 802 is arranged at the connection between the second cavity 21 and the second plate body 22 and extends toward the second cavity 21, so as to effectively reduce the flow cross-section of the annular portion 1012 and guide the flow of the gas.

[0084] Furthermore, the first protruding structure 801 is formed on the first cavity 11 , and the second protruding structure 802 is formed on the second cavity 21 .

[0085] Specifically, by setting the first protruding structure 801 on the first cavity 11 and the second protruding structure 802 on the second cavity 21, the distance from the first plate body 12 to the first protruding structure 801 is smaller than the distance from the first plate body 12 to the bottom of the first cavity 11, and the distance from the second plate body 22 to the second protruding structure 802 is smaller than the distance from the second plate body 22 to the bottom of the second cavity 21, which can effectively ensure that the flow cross-section of the flow limiting channel can realize the flow of gas, and ensure that the gas in the cavity 101 can flow to the fire hole 102 through the flow limiting channel, and finally be ejected through the fire hole 102.

[0086] It should be noted that in the embodiment of the present application, the protruding depth of the first part is the same as the height of the fire hole 102, and the sum of the protruding depth and the height of the fire hole 102 is the depth of the first cavity 11. The protruding depth of the second part is the same as the protruding depth of the first part, so that the height of the flow-limiting channel is 1 / 2 of the height of the cavity 101. Among them, the height of the fire hole 102 is 1-3mm. At the same time, the width of the first part (the length of the first protruding structure 801 extending to the first cavity 11) is 1 / 2 of the length of the fire hole 102.

[0087] 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.

[0088] 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.

[0089] In the embodiment of the present application, the first connection structure 30 is arranged on the radial inner side of the annular portion 1012, and at this time, the second blocking structure 80 can provide a basis for the arrangement of the first connection structure 30, so the second blocking structure 80 can pass through at least one first connection structure 30. Specifically, the first connection structures 30 are arranged at intervals along the inner diameter circumferential direction of the annular portion 1012. Further, the spacing is arranged at equal intervals, and by arranging a plurality of first connection structures 30, and making the plurality of first connection structures 30 dispersedly arranged on the inner side of the burner 100, 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.

[0090] In addition, when the burner 100 is burning, the fire hole 102 sprays 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 connecting structure 30 is used to connect and fix the first body 10 and the second body 20. By setting the position of the first connecting structure 30 on the inner side of the burner 100 and the position of the first connecting 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.).

[0091] Here, it should be noted that in some embodiments of the present application, Figure 7 As shown, the burner in the left figure adopts nine first connecting structures 30, and the nine first connecting structures 30 are arranged at intervals along a preset direction, which can evenly divide the entire ring of fire holes 102 into nine fire hole 102 areas, which are counted clockwise as the first, second...ninth fire hole areas. Among them, the second blocking structure 80 passes through three first connecting structures 30 and spans the first and second fire hole areas. The depth of the color is different, and the speed of the gas is different. The right figure shows the outlet gas flow rate of the nine fire hole areas obtained through simulation calculation. By comparison, it can be seen that the difference in the flow rate of each fire hole area is small, and the output flow rate of the overall gas of the burner is the same or similar. Therefore, the second blocking structure 80 can play a role in uniformly distributing the gas output flow rate of the fire hole 102.

[0092] 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.

[0093] It should be pointed out that the sealing structure 40 can be connected by fitting the first plate body 12 and the second plate body 22 and fixedly connected by other connecting parts, or by connecting by cooperating with a groove and a protrusion structure, or by fitting the first plate body 12 and the second plate body 22 and connecting by wrapping and locking them with a flange structure.

[0094] 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 12 outside the first cavity 11 is longer than the extension length of the second plate 22 outside the second cavity 21. Since the first body 10 and the second body 20 are both sheet metal parts, the second plate 22 can be wrapped in the second plate 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.

[0095] Furthermore, if Figure 7 As shown, any fire hole 102 has an air inlet end, an air outlet end, and a flow pipe connecting the air inlet end and the air outlet end, and the flow pipe is a flow pipe extending along a first direction, wherein the angle between the first direction and the second direction is α, α is an acute angle, and the second direction is the radial direction of the annular portion 1012.

[0096] Specifically, the radial direction of the annular portion 1012 and the first direction from the air inlet end to the air outlet end are set to an acute angle. The annular structure can make the flames ejected from each fire hole 102 present a swirl shape, thereby effectively reducing the impact loss between flames, ensuring the combustion effect and burning time of the flame, and helping to further improve the use effect of the burner 100.

[0097] In the embodiment of the present application, when the burner 100 is set on the cooking utensil, the gas enters the annular portion 1012 from the air inlet 1011 and moves clockwise or counterclockwise. The gas outlet has an output direction (fire hole 102 rotation direction) parallel to the first direction, and the output direction (fire hole 102 rotation direction) is set at an acute angle to the radial direction of the annular portion 1012. At the same time, the output direction (fire hole 102 rotation direction) of the fire hole 102 is the same as the gas flow direction of the inner cavity of the burner 100, so that while ensuring the formation of a swirl flame, the resistance of the gas flowing from the cavity 101 to the fire hole 102 is reduced, the output efficiency of the gas is guaranteed, and then the combustion effect of the burner 100 is guaranteed.

[0098] It should be pointed out that the output direction of the fire hole 102 (fire hole rotation direction) and the gas flow direction in the inner cavity of the burner 100 can be set to be opposite, that is, the fire hole rotation direction and the gas flow direction in the inner cavity of the burner 100 are set at an obtuse angle. In this way, while ensuring the formation of a swirl flame, the resistance to the flow from the cavity 101 to the fire hole 102 is increased, thereby improving the safety of the use of the burner 100 and further ensuring the combustion effect of the burner 100.

[0099] Furthermore, at the connection position between the first body 10 and the second body 20, the first connection structure 30 blocks the connection between the fire hole 102 and the cavity 101. At the same time, a second fire transfer channel is provided on one of the first body 10 and the second body 20. The first fire transfer channel is located on one side of the first connection structure 30 to connect the cavity 101 and the blocked fire hole 102.

[0100] like Figure 1 and Figure 5 As 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 the secondary fire hole 1022 is blocked by the first connecting structure 30 at the position where the first connecting structure 30 is located, that is, at the connection position between 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.

[0101] 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.

[0102] It should be understood that when the first connection structure 30 is located, the first connection structure 30 blocks the secondary fire hole 1022, and the gas cannot be ejected through the secondary fire hole 1022, which may easily cause the burner 100 to be out of flame. Therefore, a plurality of second fire transmission channels are provided on the shell, and the second fire transmission channels can connect the secondary fire hole 1022 with the annular portion 1012 to ensure that the secondary fire hole 1022 can output gas and ignite, so that the fire transmission of the two main fire holes 1021 located on the adjacent sides of the first connection structure 30 can be implemented. By providing the second fire transmission channel on the shell, it is helpful to reduce the influence of the first connection structure 30 on the combustion process, and ensure that the burner 100 can operate stably and efficiently.

[0103] In addition, if Figure 5 As 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.

[0104] 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.

[0105] In some examples of this embodiment, Figures 3 to 6 As 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.

[0106] 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.

[0107] 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 5 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.

[0108] In addition, in this example, the hole of the first connecting part 13 is a circular hole, and 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 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.

[0109] 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.

[0110] 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.

[0111] Furthermore, the second fire transfer channel is configured as a fire transfer groove 25, which is formed on the second body 20 and extends along the third direction. When the first body 10 and the second body 20 are connected to each other, the fire transfer groove 25 is connected to the blocked fire hole (auxiliary fire hole).

[0112] Specifically, a fire transfer groove 25 is provided on the second body 20. When the first body 10 and the second body 20 are connected to each other, one end of the fire transfer groove 25 is provided with one side of the first connecting structure 30 and is connected to the annular portion 1012, and the other end of the fire transfer groove 25 is connected to the blocked secondary fire hole 1022, so that the flow of gas from the annular portion 1012 to the secondary fire hole 1022 can be implemented, thereby helping to ensure that the spacing distances between the various fire holes 102 are the same, improving the combustion stability of the burner 100, and by limiting the arrangement direction of the fire transfer groove 25, it helps to reduce the extension length of the fire transfer groove 25, thereby helping to reduce the processing cost of the fire transfer groove 25.

[0113] 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 provided on one side of the first connection structure 30, and its extension direction is a straight line direction. The width of the fire transfer groove is 1-2 mm. The fire transfer groove 25 is formed by the second body 20 arching toward the side away from the first body 10, and the arching depth is 0.8-1.6 mm. 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 spaced from the second cavity 21. When the first body 10 is connected to the second body 20, one end of the fire transfer groove 25 is connected to the air inlet end of the main fire hole 1021 on one side of the first connection structure 30, and the other end of the fire transfer groove 25 is connected to the secondary fire hole 1022 blocked by the first connection structure 30.

[0114] Here, it should be noted that the structure of the fire transfer groove 25 can be set to other shapes, such as an arc segment. The fire transfer groove 25 is formed by the second body 20 arching toward the side away from the first body 10. The fire transfer groove 25 is an arc structure as a whole. The two 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, the two 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. Another example is a combined section, such as including two sections of the groove body, the two sections of the groove body are set at an angle, etc. 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.

[0115] Furthermore, a first blocking structure 60 is provided on the second body 20, wherein the first blocking structure 60 is provided on the radial inner side of the annular portion 1012, the first blocking structure 60 is extended along a preset direction, and is spaced apart from the plurality of fire holes 102, and the area spaced apart between the first blocking structure 60 and the plurality of fire holes 102 constitutes a first fire transfer channel.

[0116] 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.

[0117] In an embodiment of the present application, a first blocking structure 60 is disposed on the output side of a plurality of fire holes 102, and an extension direction of the first blocking structure 60 is arranged at an angle to a direction in which the gas is ejected 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 a position of a certain fire hole 102. The ignited gas burns to form a flame, and a portion of the flame is intercepted by the first blocking structure 60 when the flame passes through the first fire transfer flow channel. The intercepted flame flows along opposite sides or one side of the first fire transfer flow channel, and the flowing flame is used to ignite the gas ejected from adjacent fire holes 102, thereby realizing a fire transfer operation between adjacent fire holes 102, and further ensuring that the burner 100 can fully burn.

[0118] 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.

[0119] Furthermore, if Figure 8 As shown, the interval distance between the fire hole 102 and the first blocking structure 60 is L, wherein 3 mm≤L≤5 mm.

[0120] 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.

[0121] It should be noted that, in the embodiment of the present invention, the spacing distance L between the fire hole 102 and the first blocking structure 60 may be 3 mm, 3.5 mm, 4 mm, 4.5 mm, ..., 5 mm.

[0122] Furthermore, if Figure 8 As shown, 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 size of the first blocking structure 60 is defined as H, where 0.8mm≤H≤1.5mm. The first blocking structure 60 has a width W extending along the radial direction of the annular portion 1012, where 1mm≤W≤3mm.

[0123] 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.

[0124] 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.

[0125] It should be noted that, in the embodiments of the present invention, the value of H may be 0.8 mm, 0.9 mm, 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, ... 1.5 mm. The value of W may be 1 mm, 1.5 mm, 2 mm, 2.5 mm, ... 3 mm.

[0126] In some embodiments of the present invention, Figure 2 and Figure 6 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.

[0127] It should be pointed out that the first protrusion structure is formed on the second body 20 and is an integrated structure with the second body 20. In an embodiment of the present invention, 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.

[0128] 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.

[0129] 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.

[0130] 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.

[0131] In some embodiments of the present invention, Figure 1 , Figure 3 and Figure 6 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 protruding 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.

[0132] 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.

[0133] In addition, further, if Figure 1 , Figure 4 and Figure 6 As shown, the burner 100 further includes a second connection structure 70, which is disposed on the housing and is used to fix the mounting frame 600. By arranging the second connection structure 70 to fix the mounting frame 600, the electronic igniter and the thermocouple can be fixed to ensure that the burner 100 can ignite the ejected gas.

[0134] 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 of the present invention will not be repeated here.

[0135] 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 second body 20, and the mounting portion 16 includes a connecting section extending in a direction away from the first body 10 and a fixing section provided on the extending section, and the fixing section is used to be fixedly connected to the cooking utensil. The length of the connecting section is used to adjust the fixing position of the burner 100.

[0136] It should be noted that the mounting portion 16 is formed on the second body 20 and is an integral structure with the second body 20. In the embodiment of the present invention, the mounting structure is formed on the second body 20 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 first body 10.

[0137] like Figures 7 to 13 As shown, the utility model also proposes a cooking appliance, which includes the burner 100 as above.

[0138] 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, 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. Since the gas has a high flow rate when it flows from the air inlet portion 1011 to the annular portion 1012, the second blocking structure 80 is provided at the intersection of the air inlet portion 1011 and the annular portion 1012 to reduce the gas flow rate from the cavity 101 to the fire hole 102 at the intersection, so that the reduced gas flow rate is the same or similar to the gas flow rate at other positions of the annular portion 1012 (the gas flow rate from the cavity 101 to the fire hole 102), thereby achieving a uniform output flow rate of the fire holes 102 at various locations and ensuring the stability of the combustion of the burner 100.

[0139] 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. Fig.11 As shown, the output end of the gas pipe 500 is spaced apart from the gas inlet end of the gas inlet portion 1011. After the gas is output from the gas pipe 500, it will suck 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. By arranging the second blocking structure 80 in the cavity 101, the gas flow rate from the cavity 101 to the fire hole 102 at the intersection of the gas inlet portion 1011 and the annular portion 1012 can be reduced, so that the reduced gas flow rate is the same or similar to the gas flow rate at other positions of the annular portion 1012 (the gas flow rate from the cavity 101 to the fire hole 102), thereby achieving a uniform output flow rate of the fire holes 102 at various locations, and ensuring the combustion stability of the burner 100.

[0140] 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.

[0141] 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 first body and a second body, wherein the first body and the second body together form a cavity and a plurality of fire holes, wherein the cavity comprises an air inlet portion and an annular portion which are connected to each other, wherein the air inlet portion is used to communicate with a gas pipeline, wherein the plurality of fire holes are arranged at intervals along a preset direction, wherein the plurality of fire holes are arranged radially inward of the annular portion and are respectively connected with the annular portion, and wherein the plurality of fire holes are used to eject gas; The burner also includes a second blocking structure, which is arranged inside the annular portion and forms a flow limiting channel connecting the annular portion and the multiple fire holes. The second blocking structure has a first end and a second end extending along the preset direction, and the first end and the second end are respectively arranged on opposite sides of the intersection of the air inlet portion and the annular portion.

2. The burner according to claim 1, characterized in that The second blocking structure is a minor arc structure.

3. The burner according to claim 1, characterized in that The second blocking structure comprises: a first portion, wherein the first portion is a first protruding structure formed on a side surface of the first body facing the second body; The second part is a second protruding structure formed on the side of the second body facing the first body, and the first protruding structure and the second protruding structure are arranged at an interval to form the flow limiting channel.

4. The burner according to claim 3, characterized in that The first body has a first cavity, the second body has a second cavity, the first cavity and the second cavity are engaged with each other to form the containing cavity, the first protruding structure is formed on the first cavity, and the second protruding structure is formed on the second cavity.

5. The burner according to claim 2, characterized in that: The first body and the second body are connected to each other through at least one first connection structure, the first connection structure is arranged on the inner side of the annular portion, and the second blocking structure passes through at least one of the first connection structures.

6. The burner according to claim 5, 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 a second fire transfer channel is provided on one of the first body and the second body, and the second fire transfer channel is arranged on one side of the first connection structure, and the second fire transfer channel is used to connect the cavity and the blocked fire hole.

7. The burner according to claim 6, characterized in that The fire hole has an air inlet end, an air outlet end, and a flow pipe extending along a first direction. The air outlet end is connected to the cavity through the flow pipe and the air inlet end. The first direction is set at an acute angle to the second direction, and the second direction is the radial direction of the annular portion.

8. The burner according to claim 7, characterized in that The second fire transfer flow channel is a fire transfer groove formed on the second body. When the first body and the second body are connected to each other, the fire transfer groove is communicated with the blocked fire hole.

9. The burner according to any one of claims 1 to 8, 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 any one of claims 1 to 8, characterized in that The first body or the second body is provided with a mounting portion.

11. A cooking utensil, characterized in that: The cooking appliance comprises a burner according to any one of claims 1 to 10.

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