CN223063848U - Combustor and cooking utensil - Google Patents

Abstract

The utility model discloses a burner and a cooking utensil. The burner includes a shell, the shell has a cavity and a plurality of fire holes, the cavity includes an air inlet portion and an annular portion which are connected, 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. The fire hole has an air inlet end, an air outlet end, and a circulation pipe extending along a first direction, the air outlet end is connected with the cavity through the circulation pipe and the air inlet end, the first direction is arranged at an acute angle to the second direction, and the second direction is the radial direction of the annular portion. The burner described in the utility model can adjust the injection direction of the gas by limiting the direction of the air outlet end of the fire hole and cooperating with the annular portion structure of the cavity, so as to form a swirl flame after ignition, which helps to prolong the residence time of the flame, ensure the complete combustion of the gas, and improve the use effect of the burner.

Description

Combustor and cooking utensil

Technical Field

The utility model relates to the technical field of household appliances, in particular to a combustor and a cooking utensil.

Background

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

Gas-based cooking appliances typically include a combustion assembly that utilizes combustion of gas to provide heat for the cooking process of the cooking appliance.

Existing sheet metal burners typically have an injection port, a cavity and a fire hole. When in actual use, fuel gas with certain pressure enters the burner from the injection port in a jet flow mode, and is sucked around primary air for mixing, then the fuel gas is ignited at the fire hole, at the moment, part of heat is supplied by the convection of high-temperature flue gas generated by combustion to heat food, and the other part of heat is supplied by the external radiation of flame. Wherein, whether the combustion of the fuel gas directly affects the cooking effect of the food and the smoke emission of the burner.

But current panel beating formula combustor adopts the cylindricality structure more, and the injection mouth sets up in the one end of cylindricality structure, and the fire hole sets up in the both sides of cylindricality structure, and at this moment, the gas output velocity of flow that is close to the fire hole of injection mouth is faster, and the gas output velocity of flow that is kept away from the fire hole of injection mouth is slower. The gas output by the fire hole is ignited to generate high-temperature flue gas, the high-temperature flue gas is pumped away under the action of a fan of the cooking appliance, and the gas sprayed out from part is pumped away from the cooking appliance completely without being combusted due to different output flow rates of the gas and different distances relative to the fan, so that the waste of resources is caused.

Disclosure of utility model

The utility model aims to at least solve the problem of incomplete combustion of fuel gas in the existing burner. The aim is achieved by the following technical scheme:

the present utility model proposes a burner for a gas turbine, the burner includes:

the shell is provided with a containing cavity and a plurality of fire holes, the containing cavity comprises an air inlet part and an annular part which are communicated, the air inlet part is used for being communicated with a fuel 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 part and are respectively communicated with the annular part, and the plurality of fire holes are used for spraying fuel gas;

The fire hole is provided with an air inlet end, an air outlet end and a flow pipeline extending along a first direction, the air outlet end is communicated with the containing cavity through the flow pipeline and the air inlet end, the first direction and the second direction are arranged at an acute angle, and the second direction is the radial direction of the annular part.

The burner comprises a shell, wherein the shell is provided with a containing cavity and a plurality of fire holes, the containing cavity comprises an air inlet part and an annular part which are communicated, fuel gas of a fuel gas pipeline flows into the annular part from the air inlet part and then is sprayed out through the fire holes, combustion of the burner is realized through ignition, the direction of the air outlet end of the fire holes is limited, the direction of the flame can be adjusted by matching with the structure of the annular part, and then swirl flame can be formed after ignition, the residence time of the flame is prolonged, the combustion of the fuel gas is ensured to be complete, and the using effect of the burner is improved.

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

In some embodiments of the utility model, the housing includes a first body and a second body connected by at least one first connection structure and forming the cavity and the plurality of fire holes.

In some embodiments of the utility model, the first connection structure is disposed radially inward of the annular portion.

In some embodiments of the utility model, a sealing structure is provided between the first body and the second body, the sealing structure being disposed annularly radially outward of the annular portion.

In some embodiments of the utility model, the sealing structure is a first flange structure formed on an edge of the first body.

In some embodiments of the utility model, the air inlet is coplanar with the annular portion and the air inlet is disposed tangentially to the annular portion.

In some embodiments of the present utility model, the air inlet portion includes an air inlet, a contraction section, a mixing section, an expansion section, and an air outlet that are sequentially communicated, at least a part of the flow cross section of the contraction section is in a tapered structure, and at least a part of the flow cross section of the expansion section is in a diverging structure in a ventilation direction from the air inlet to the air outlet.

In some embodiments of the present utility model, a first blocking structure is disposed on the housing, the first blocking structure is disposed radially inside the annular portion, the first blocking structure extends along the preset direction and is disposed at intervals from the plurality of fire holes, and a first fire transfer flow path is formed by the first blocking structure and an area spaced between the plurality of fire holes.

In some embodiments of the present utility model, the burner further includes a flow guiding structure, the flow guiding structure has a flow guiding plate, the flow guiding plate is provided with a vent hole, the vent hole is disposed inside the annular portion and is concentric with the annular portion, at least part of the flow guiding plate is located at one side of the plurality of fire holes, and the flow guiding plate is used for guiding the fuel gas ejected from the plurality of fire holes to flow to the vent hole.

In some embodiments of the utility model, the first body or the second body is provided with a mounting portion thereon.

A second aspect of the utility model proposes a cooking appliance comprising a burner as described above.

According to the cooking utensil, the shell with the fire hole and the cavity is arranged, the cavity comprises the air inlet part and the annular part which are communicated, and the fuel gas of the fuel gas pipeline flows into the annular part from the air inlet part and then is sprayed out through the fire hole, and the combustion of the burner is realized through ignition. Meanwhile, the output direction of the fire hole is further limited, so that the structure of the annular part can be matched, the injection direction of the flame can be adjusted, the swirl flame can be formed after ignition, the residence time of the flame is prolonged, the combustion of fuel gas is ensured to be complete, and the using effect of the burner is improved.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

fig. 1 schematically shows a schematic structural view of a burner according to an embodiment of the present utility model (black thick arrow lines in the figure indicate the flow direction of gas in a chamber);

FIG. 2 is a schematic view of the burner shown in FIG. 1 from another perspective (the black thick arrow lines in the figure indicate the direction of flow of the gas in the chamber);

FIG. 3 is an exploded view of the burner shown in FIG. 1;

FIG. 4 is a schematic view of the first body shown in FIG. 1;

FIG. 5 is a schematic view of the structure of the second body shown in FIG. 1;

Fig. 6 is an enlarged schematic view of the portion a shown in fig. 2;

FIG. 7 is a schematic view of the burner shown in FIG. 1 from a third perspective;

FIG. 8 is a cross-sectional view of a portion B-B of the combustor shown in FIG. 7;

fig. 9 schematically illustrates a partial structure diagram of a cooking appliance according to an embodiment of the present utility model at a certain viewing angle;

fig. 10 is a schematic view of a partial structure of the cooking appliance shown in fig. 9 at a second view angle (black thick arrow lines in the drawing indicate a flow direction of high-temperature smoke);

fig. 11 is a partial structural schematic view of the cooking appliance shown in fig. 9 at a third view angle;

Fig. 12 is an enlarged schematic view of the C portion shown in fig. 11.

The reference numerals are as follows:

1000. an oven;

100. 200 parts of a burner, 300 parts of a box body, 300 parts of a fan assembly, 400 parts of a tray, 500 parts of a gas pipe, 600 parts of a mounting rack;

101. 102, fire holes;

1011. 1012, annular part;

10. a first body;

11. a first cavity; 12 parts of a first plate body, 13 parts of a first connecting part, 14 parts of a first avoiding part, 15 parts of a fire hole structure cavity;

111. A first constriction section, 112, a first diffusion section, 113, a first mixing section;

20. a second body;

21. The second cavity, 22, the second plate body, 23, the second connecting part, 24, the second avoiding part;

211. a second contraction section 212, a second diffusion section 213, a second mixing section;

221. 222, mounting holes;

30. A first connection structure;

40. a sealing structure;

50. A flow guiding structure;

501. A deflector 502, vent holes;

60. a first blocking structure.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an order of performance is explicitly stated. It should also be appreciated that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For ease of description, spatially relative terms, such as "inner," "outer," "lower," "below," "upper," "above," and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below" may include both upper and lower orientations.

As shown in fig. 1 to 11, according to an embodiment of the present utility model, a burner 100 is provided, the burner 100 being for being provided on a cooking appliance. The burner 100 includes a housing. The shell is provided with a containing cavity 101 and fire holes 102, the gas pipeline can be communicated with the containing cavity 101, meanwhile, the number of the fire holes 102 is multiple, all the fire holes 102 are arranged on the combustor 100 at intervals along a preset direction, all the fire holes 102 are respectively communicated with the containing cavity 101, and gas in the containing cavity 101 can be sprayed out through the fire holes 102.

Further, the housing includes a first body 10 and a second body 20. Wherein, connect each other between first body 10 and the second body 20, and first body 10 and second body 20 surround and form appearance chamber 101 and fire hole 102, hold chamber 101 and include the gas inlet portion 1011 and the annular portion 1012 that the intercommunication set up, gas inlet portion 1011 is used for with the gas pipeline intercommunication, all fire hole 102 set up in the radial inboard of annular portion 1012 and communicate with annular portion 1012 respectively.

Further, the fire hole 102 has an air inlet end, an air outlet end, and a flow conduit extending in a first direction, the air outlet end is in communication with the cavity 101 through the flow conduit and the air inlet end, the first direction is disposed at an acute angle to the second direction, and the second direction is radial to the annular portion.

Specifically, the housing has a cavity 101 and a fire hole 102, wherein the cavity 101 has an air inlet portion 1011 and an annular portion 1012, and the gas of the gas line can be ejected through the fire hole 102 after flowing into the annular portion 1012 through the air inlet portion 1011, and combustion of the burner 100 is achieved by ignition. Because annular portion 1012 is annular structure, and fire hole 102 sets up in the radial inboard of annular portion 1012, through limiting the output orientation of fire hole 102 and the radial angular setting of annular portion, can form the whirl flame after the ignition, the dwell time of extension flame, the burning of guarantee gas is complete to solve the problem that the combustion stability of current combustor 100 is relatively poor.

It should be understood that, as shown in fig. 1 and 2, when the burner 100 is in use, fuel gas flows from the gas inlet portion 1011 to the annular portion 1012, and then the fuel gas in the annular portion 1012 is ejected through the fire holes 102, and at this time, the ejected fuel gas is ignited at a position of a fire hole 102. The output direction of the air outlet end of the fire hole 102 is limited, and the structure of the annular part 1012 is matched, so that the injection direction of the flame can be adjusted, and then annular swirl flame can be formed after ignition, which is beneficial to prolonging the residence time of the flame, guaranteeing the combustion completion of fuel gas, reducing the opposite impact between the flames, further causing heat loss and improving the using effect of the burner.

In addition, the cavity 101 is partially formed in an annular structure, so that the loss of kinetic energy of the gas mixture (the mixture of gas and air) can be effectively reduced, and the vortex flow along the annular portion 1012 is easily formed, so that the gas is more uniformly distributed when entering the annular portion 1012. Meanwhile, the annular portion 1012 can reflux part of the gas mixture, so that the gas is mixed again, the mixing effect of the gas is further enhanced, and the gas can be distributed in the annular portion 1012 more uniformly.

Note that the gas inlet 1011 of the gas burner has an air inlet for receiving the gas outputted from the gas line and an air outlet. The gas and air flowing into the air inlet portion 1011 may be set according to a preset ratio, so that the gas entering into the cavity 101 forms a mixed gas, thereby meeting the requirement of gas combustion.

In the embodiment of the present application, as shown in fig. 1 and 2, the air inlet portion 1011 and the annular portion 1012 are located on the same plane, and the air outlet of the air inlet portion 1011 is arranged tangentially to the annular portion 1012, wherein the arrow direction shown in the figure is the flow direction of the fuel gas. By arranging the inlet portion 1011 tangentially to the annular portion 1012, the resistance experienced by the gas from the inlet portion 1011 to the annular portion 1012 is minimized, and the impact of the gas on the inner wall of the annular portion 1012 when it enters the annular portion 1012 is reduced, thereby reducing the kinetic energy loss of the gas mixture. Meanwhile, the flow path of the unburnt mixed gas is longer, the residence time of the high-temperature flue gas is longer, and the unburnt gas mixture is benefited, so that the emission of the combustor 100 is reduced.

Further, as shown in fig. 3 to 5, the first body 10 has a first plate body 12 and a first cavity 11, the first plate body 12 is disposed outside an opening of the first cavity 11 and disposed in a circumferential direction, the second body 20 has a second plate body 22 and a second cavity 21, the second plate body 22 is disposed outside an opening of the second cavity 21 and disposed in a circumferential direction, and a fire hole construction cavity is provided on one of the second body 20 and the first body 10. After the first body 10 and the second body 20 are connected and fixed, the first cavity 11 and the second cavity 21 are buckled with each other to form a structure of the cavity 101, and the fire hole structural cavity is abutted against the corresponding plate body and is surrounded to form a plurality of fire holes 102.

Specifically, the first body 10 has a fire hole structural cavity, a first plate body 12, and a first cavity 11, wherein the fire hole structural cavity, the first body 10, and the first cavity 11 are integrally processed, so that the processing steps can be reduced, the processing convenience can be improved, and the manufacturing cost can be reduced. The second body 20 has a second plate 22 and a second cavity 21, wherein the second plate 22 and the second cavity 21 are integrally processed, so that the processing steps can be reduced, the processing convenience can be improved, and the manufacturing cost can be reduced.

In the embodiment of the present application, the side of the first cavity 11 facing the second body 20 has an opening, 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 of the first cavity 11, and the flange is sized to satisfy the need of providing a fire hole structural cavity formed on the first plate 12, the fire hole structural cavity being of a corrugated structure. Meanwhile, the second cavity 21 has an opening 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 of the second cavity 21, and the size of the flange can meet the requirements of providing the below-described flow guiding structure 50, sealing structure 40 and first flame transfer flow passage. 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 with each other to form a cavity 101, the trough position of the fire hole structure cavity of the corrugated structure is abutted against the top of the second plate 22, and a plurality of fire holes 102 are formed between the fire hole structure cavity of the corrugated structure and the second plate 22.

It should be noted that the burner 100 is made of a high temperature and corrosion resistant material. The first body 10 may be a sheet metal stamping part or a casting part, and similarly, the second body 20 may be a sheet metal stamping part or a casting part. In addition, the burner 100 may be integrally cast.

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 of a plate-shaped structure, a first cavity 11, a first plate body 12 and a fire hole structure cavity (a fire hole 102 is formed in a pressing mode), wherein the first cavity 11 comprises a first part and a second part, the first part extends in a linear direction, and the second part is of an annular structure. The fire hole construction cavity is located on the radial inner side of the annular structure and is communicated with the first cavity 11, the second sheet metal part is of a plate-shaped structure, a second cavity 21 and a second plate body 22 are formed through stamping, the second cavity 21 comprises a third part and a fourth part, the third part extends in the linear direction, and the fourth part is of an annular structure. When the first body 10 is fixedly connected with the second body 20, the first body 10 is abutted against the second body 20, the first cavity 11 and the second cavity 21 are mutually buckled to form the accommodating cavity 101, the second body 20 is located outside the second cavity 21 and is in a second plate 22, and the second plate 22 is abutted against the fire hole structural cavity and surrounds the fire hole structural cavity to form the fire hole 102. The burner 100 is simple in structure and convenient to process and manufacture, thereby effectively reducing manufacturing costs.

The first cavity 11 is formed by arching the first body 10 to a side far from the second body 20, the second cavity 21 is formed by arching the second body 20 to a side far 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 an air inlet part 1011 of the cavity 101, and the second part and the fourth part can form an annular part 1012 of the cavity 101. By providing the air inlet portion 1011 communicating with the annular portion 1012, the flow path of the fuel gas and air in the cavity 101 can be effectively increased, so that the fuel gas and air can be sufficiently mixed, and the combustion efficiency of the fuel gas can be improved.

It should be noted that the fire hole construction cavity also has various embodiments, for example, the fire hole construction cavity is formed on the second plate body 22, for example, the fire hole construction cavity is formed on the first plate body 12, for example, a portion of the fire hole construction cavity is formed on the first plate body 12, and another portion of the fire hole construction cavity is formed on the second plate body 22.

Further, as shown in fig. 4 and 5, the air inlet portion 1011 includes an air inlet, a contraction section, a mixing section, an expansion section, and an air outlet which are sequentially communicated, wherein the air inlet is for communicating with a gas line, and the air outlet is for communicating with the annular portion 1012. In the ventilation direction from the air inlet to the air outlet, at least part of the flow cross section of the contraction section is of a tapered structure, and at least part of the flow cross section of the expansion section is of a gradually expanding structure.

Specifically, when gas flows from the gas pipeline to the gas inlet 1011, air is sucked and mixed with air, and then enters the cavity 101, and the gas inlet 1011 is arranged into a combination structure of a contraction section, a mixing section and an expansion section, so that a venturi tube structure can be formed, the flow velocity of gas and air can be changed for many times, the mixing effect can be further ensured, meanwhile, the flow velocity of gas and air can be improved, and the kinetic energy loss of a gas mixture in the flowing process can be further effectively compensated.

In an embodiment of the present application, the first part includes a first constriction 111, a first mixing 113 and a first diffusion 112, which are arranged in sequence, and the second part includes a second constriction 211, a second mixing 213 and a second diffusion 212. When the first body 10 and the second body 20 are mated with each other, the first contraction section 111 and the second contraction section 211 are buckled with each other to form a contraction section, the first mixing section 113 and the second mixing section 213 are buckled with each other to form a mixing section, and the first diffusion section 112 and the second diffusion section 212 are buckled with each other to form an expansion section. The flow section of the contraction section is at least partially in a tapered structure, and the flow section of the expansion section is at least partially in a gradually-expanding structure. The contraction section, the mixing section and the expansion section are sequentially connected in the direction from the near air end face to the air outlet end of the air inlet part 1011 to form a venturi tube structure. The mixed gas of the fuel gas and the air is extruded by the contraction section, so that the flow velocity of the fuel gas and the air can be improved, and further the kinetic energy loss in the flowing process can be effectively compensated.

Further, as shown in fig. 1 and 2, the burner 100 further includes a first connecting structure 30, at least one of the first connecting structures 30, and the first connecting structure 30 is used for connecting and fixing the first body 10 and the second body 20. The burner 100 has a plurality of first connection structures 30, two first connection structures 30 that any adjacent arrangement are arranged at intervals, and the arrangement of the first connection structures 30 can ensure that the connection between the first body 10 and the second body 20 can be implemented, and is helpful to ensure the connection effect of the first body 10 and the second body 20, and reduce the leakage of fuel gas.

It is noted that the first connection structure 30 also has various embodiments, for example, the first connection structure 30 is formed radially inside the annular portion 1012, for example, the first connection structure 30 is formed radially outside the annular portion 1012, for example, the plurality of first connection structures 30 includes two portions, one portion being located radially inside the annular portion 1012 and the other portion being located radially outside the annular portion 1012.

In the embodiment of the present application, the first connection structure 30 is disposed radially inward of the annular portion 1012. Specifically, all the first connection structures 30 are circumferentially spaced along the inner diameter of the annular portion 1012. Further, the first connection structures 30 are disposed at equal intervals, so that the first connection structures 30 are disposed on the inner side of the burner 100 in a dispersed manner, which 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.

In addition, when the burner 100 is burned, the flame holes 102 are burned to form flames by the gas being sprayed out, and the temperature of the positions of the flame holes 102 is high, so that the burner 100 is easily deformed at the positions of the flame holes 102 when the burner 100 is used for a long time under high temperature conditions. The first connecting structure 30 is used for connecting and fixing the first body 10 and the second body 20, the position of the first connecting structure 30 is arranged on the inner side of the burner 100, and the position of the first connecting structure 30 is close to the position of the fire hole 102, so that the connection strength of the position of the fire hole 102 is further ensured, the deformation condition of the fire hole 102 caused by high temperature in the using process of the burner 100 is reduced, and the adverse effect (fire transmission difficulty, tempering or flame separation and the like) on the burner 100 caused by the deformation of the fire hole 102 is avoided.

In some examples of the present embodiment, as shown in fig. 3 to 6, the first connection structure 30 includes a first connection part 13 and a second connection part 23, the first connection part 13 is disposed on the first body 10, the second connection part 23 is disposed on the second body 20, wherein one of the second connection part 23 and the first connection part 13 is a protrusion structure, and the other of the second connection part 23 and the first connection part 13 is a hole structure, and the protrusion structure is rivet-fitted after passing through the hole structure, thereby connecting and fixing the first body 10 and the second body 20.

Specifically, in the present example, the second connection portion 23 is a convex structure, and the first connection portion 13 is a hole structure. When the first body 10 is fixedly connected with the second body 20, the first body 10 is abutted against the second body 20, the protruding structure penetrates through the hole structure, and the portion, penetrating out of the hole structure, of the protruding structure is riveted by means of riveting. The riveting fixing mode is simple in structure and convenient to process, and in addition, the riveting structure is high in strength and good in stability, the strength of the fire hole 102 can be further increased, and deformation of the fire hole 102 caused by high temperature is further reduced.

It should be noted that, the protruding structure is formed on the second body 20, and the protruding structure may be formed integrally with the second body 20, or may be formed separately from the second body 20 (by welding or bonding). Further, as shown in fig. 6, in the present example, a convex structure is formed on the second plate body 22, the convex structure being a burring hole having a burring in the thickness direction of the second body 20. The height of the flanging is larger than the depth of the hole structure, so that the flanging can be penetrated out through the flanging hole, and the riveting fixing can be effectively realized. The flanging hole has a simple structure, and can be manufactured in a stamping mode, namely, a corresponding connecting structure is formed by utilizing the structure of the second body 20, so that connected parts are saved, and the manufacturing cost of a product is reduced.

In addition, in this example, the hole of the first connecting portion 13 is a circular hole, and the flanging hole is also a circular hole, and the flanging is formed into 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 flanging 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, besides the above-mentioned circular hole structure, a directional hole or a special-shaped hole may be provided, and the limitation is not limited.

Further, as shown in fig. 4 to 6, the first connecting portion 13 is formed on the first body 10 and is provided with a hole forming structure, the second connecting portion 23 is formed on the second body 20 and is provided with a flanging hole structure, and meanwhile, an avoidance structure is further provided on the housing, the avoidance structure includes a first avoidance portion 14 provided on the first body 10 and a second avoidance portion 24 provided on the second body 20, wherein the first avoidance portion 14 is located at a radial outer side of the hole structure and is annularly arranged at a circumferential direction of the hole, and the second avoidance portion 24 is located at a radial outer side of the flanging hole structure and is annularly arranged at a circumferential direction of the flanging hole.

When the first body 10 is fixedly connected with the second body 20, the first body 10 is abutted against the top of the second body 20, the flanging of the flanging hole penetrates through the hole structure on the first body 10, the part of the flanging penetrating through the hole structure is flattened by using the riveting equipment, and the flanging is abutted against the avoidance structure, so that a first connecting structure 30 (the structure formed after riveting the hole structure and the flanging of the flanging hole) is formed, and the connection and the fixation of the first body 10 and the second body 20 are realized. Through setting up and dodging the structure to dodge the circumference that the structure ring was established at first connection structure 30, make around first connection structure 30 have enough be used for pressing the space of riveting, in order to guarantee that the equipment of riveting can effectively press the riveting operation, and then guaranteed to be fixed with the connection of second body 20 to first body 10.

Further, a seal structure 40 is provided radially outward of the annular portion 1012. The sealing structure 40 is used to prevent leakage of the fuel gas in the chamber 101. The fire hole construction cavity abuts against the second plate 22 and surrounds the plurality of fire holes 102 on the radial inner side of the annular portion 1012, so that the fuel gas can be discharged from the radial inner side of the annular portion 1012. Meanwhile, the sealing structure 40 is provided on the radially outer side of the annular portion 1012 to effectively prevent the fuel gas in the cavity 101 from flowing out of the radially outer side of the annular portion 1012, thereby contributing to the improvement of the safety in use of the burner 100.

It should be noted that, the sealing structure 40 may be connected by attaching the first plate 12 to the second plate 22 and fixedly connected by other connecting members, or by connecting a groove with a protrusion structure, or by attaching the first plate 12 to the second plate 22 and wrapping the first plate with a flange structure to lock the second plate.

In some embodiments of the present application, as shown in fig. 8, the sealing structure 40 is a first burring structure formed at an edge of the first body 10. Specifically, the extension length of the first plate body 12 outside the first cavity 11 is longer than the extension length of the second plate body 22 outside the second cavity 21, and since the first body 10 and the second body 20 are sheet metal parts, the second plate body 22 can be wrapped in the second plate body 22 in a sheet metal edge beating manner, so that the sealing connection of the first body 10 and the second body 20 is realized. The processing mode is simple, the manufacturing is convenient, and the manufacturing cost is reduced.

Further, as shown in fig. 1 and 7, the plurality of fire holes 102 of the burner 100 are arranged at intervals on the burner 100 along a preset direction, which is a circumferential direction of the annular portion 1012, and are located radially inward of the annular portion 1012.

Specifically, in use of the burner 100, fuel gas in the annular portion 1012 is respectively ejected through the fire holes 102, and the ejected fuel gas is ignited to generate flame, thereby providing heat for the cooking process. The distances between the fire holes 102 may be equal or different, and in this embodiment, the distances between two adjacent fire holes 102 are equal, which helps to ensure the stability of gas combustion.

In the embodiment of the present application, the second portion of the first cavity 11 is radially inward and the first plate is provided with a fire hole construction cavity, and when the first body 10 is connected to the second body 20, the fire hole construction cavity cooperates with the second plate 22 to form the fire hole 102 disposed radially inward of the annular portion 1012. And at this time the gas moves clockwise or counterclockwise in the annular portion 1012. The fire holes are arranged at intervals along the preset direction, so that annular flame can be ensured to be formed, and the effect of the burner on cooking or baking is ensured.

Further, the fire hole 102 has an air inlet end, an air outlet end, and a flow channel extending in a first direction, the air inlet end has a second direction facing the center of the annular portion, wherein the first direction is disposed at an acute angle to the second direction.

Specifically, as the direction of the air inlet end facing the center of the annular part is set as the second direction in the figure, the output direction of the air outlet end of the fire hole 102 is the first direction, namely the extending direction of the flowing pipeline, the first direction and the second direction form an included angle alpha, wherein 0 degree < alpha <90 degrees, namely the included angle between the first direction and the second direction is an acute angle, the spraying direction of the fuel gas and the radial direction of the annular part can be arranged at an angle, and the flame sprayed out of each fire hole can be in a cyclone shape by matching with the annular structure, so that the opposite impact loss between the flames can be effectively reduced, the burning effect and the burning duration of the flames are guaranteed, and the use effect of the burner is further improved.

In an embodiment of the present application, when the burner is provided on the cooking appliance, the gas enters the annular portion from the gas inlet portion and moves clockwise or counterclockwise. The air outlet end is provided with an output direction (fire hole rotation direction), and the output direction (fire hole rotation direction) and the direction of the air inlet end surface to the circle center of the annular part are arranged at an acute angle. Meanwhile, the output direction of the fire hole (the rotation direction of the fire hole) is opposite to the gas flowing direction of the inner cavity of the burner, so that the resistance of flowing from the cavity to the fire hole is increased while the swirl flame is formed, and the combustion effect of the burner 100 is further ensured.

In the embodiment of the present utility model, the value of α may be 10 °, 15 °,20 °, 25 °, 30 °, 35 °, 40 °, 45 °, 50 °, 55 °, 60 °, 65 °, 70 °, 75 °, 80 °,. 85 °.

Further, a first blocking structure 60 is disposed on the second body 20, wherein the first blocking structure 60 is disposed radially inside the annular portion 1012, the first blocking structure 60 extends along a preset direction and is disposed at intervals from the plurality of fire holes 102, and an area spaced between the first blocking structure 60 and the plurality of fire holes 102 forms a first fire transfer flow path.

Specifically, as shown in fig. 3, 5 and 6, the first blocking structure 60 is disposed on the second plate 22 of the second body 20, where the first blocking structure 60 is located on the output side of the plurality of fire holes 102, that is, on the radial inner side of the annular portion 1012, and meanwhile, the extending direction of the first blocking structure 60 is consistent with the spacing direction (preset direction) of the plurality of fire holes 102, and the first blocking structure 60 and the plurality of fire holes 102 are disposed at intervals, and the spaced space is the first fire transfer flow path.

In the embodiment of the application, the first blocking structure 60 is disposed at the output side of the plurality of fire holes 102, and the extending direction of the first blocking structure 60 is disposed at an angle to the spraying direction of the fuel gas through the fire holes 102, when the burner 100 is in use, the fuel gas in the cavity 101 is sprayed out through the fire holes 102, the sprayed fuel gas is ignited at the position of a certain fire hole 102, the ignited fuel gas burns to form flame, when the flame passes through the first fire transfer flow passage, part of the flame is intercepted by the first blocking structure 60, the intercepted flame flows along two opposite sides or one side of the first fire transfer flow passage, and the flowing flame is utilized to perform ignition operation on the fuel gas sprayed out of the adjacent fire holes 102, thereby realizing fire transfer operation between the adjacent fire holes 102, and further ensuring that the burner 100 can fully burn.

It should be understood that the first blocking structure 60 and the tracks formed by the plurality of fire holes 102 are arranged at equal intervals, so as to ensure that the first fire transfer flow passage formed by the first blocking structure 60 has stable fire transfer performance, and further ensure the effectiveness of fire transfer. At the same time, the first blocking structure 60 also can act as a choke to the flame, and the flame will flow down and sideways after passing over the first blocking structure 60, helping to stabilize the flame near the exit of the flame holes 102.

Further, as shown in FIG. 8, the fire hole 102 is spaced apart from the first blocking structure 60 by a distance L, wherein 3 mm≤L≤5 mm.

Specifically, by setting the interval distance between the fire hole 102 and the first blocking structure 60, the width of the first fire transfer flow channel is effectively set, so that enough flame in the first fire transfer flow channel is ensured to flow, and further, the effectiveness of fire transfer of the first fire transfer flow channel is ensured, so that the burner 100 can operate stably and efficiently.

It should be noted that in the embodiment of the present utility model, the distance L between the fire hole 102 and the first blocking structure 60 may have a value of 3mm, 3.5mm, 4mm, 4.5mm.

Further, the first body 10 is disposed on top of the second body 20, the thickness direction of the second body 20 is the arrangement direction of the first body 10 and the second body 20, and the dimension of the first blocking structure 60 is defined as H in the thickness direction of the second body 20, wherein 0.8mm is equal to or less than H is equal to or less than 1.5mm. The first blocking structure 60 has a width W extending in the radial direction of the annular portion 1012, wherein 1 mm≤W≤3 mm.

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, the top of the first blocking structure 60 extends toward the direction of the first body 10, and by arranging the first blocking structure 60, the first blocking structure 60 can shunt and block flames formed by gas sprayed from the fire hole 102, wherein one part of flames enters the first fire transfer flow passage and is used for transferring fires between the fire holes 102, and the other part of flames is used for providing heat for a cooking process.

It should be understood that, when the extension dimension of the first blocking structure 60 is greater than 1.5mm in the arrangement direction of the first body 10 and the second body 20, the larger dimension of the first blocking structure 60 formed at this time may cause the flame to be mostly blocked in the first flame transfer flow path, thereby resulting in smaller amount of flame for heating from the outside, which is disadvantageous for improving the performance of the burner 100.

It is noted that in embodiments of the present utility model, H may be 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm. The value of W may be 1mm, 1.5mm, 2mm, 2.5mm.

In some embodiments of the present utility model, as shown in fig. 2 and 5, the first blocking structure 60 is formed on the second body 20, and the first blocking structure 60 is a first protrusion structure protruding toward one side of the first body 10. Specifically, by arranging the first blocking structure 60 to be the first protruding structure, the connection strength between the first blocking structure 60 and the second body 20 is increased, the deformation of the first blocking structure 60 caused by high temperature in the combustion process of the burner 100 is reduced, and the fire transfer effect of the first fire transfer flow passage is further ensured. Meanwhile, the first protrusion structure is also beneficial to improving the overall structural strength of the second body 20, and reducing the problem that the second body 20 deforms during the combustion process of the burner 100.

It should be noted that, the first protrusion structure is formed on the second body 20 and is formed integrally with the second body 20, and in the embodiment of the present utility model, the protrusion formed on the second body 20 by punching can ensure structural stability between the first protrusion structure and the second body 20.

Further, the first blocking structure 60 has a first end and a second end, wherein the second end is spaced apart from the first end, and the first end and the second end are each disposed on one side of the junction of the air inlet 1011 and the annular 1012.

Specifically, the second end and the first end are disposed at intervals and form a blocking section, and the first end and the second end are disposed upstream of the junction of the air inlet portion 1011 and the annular portion 1012 in the flow direction of the fuel gas, and since the air inlet portion 1011 is tangential to the outer circle of the annular portion 1012, when the fuel gas flows in a preset direction after entering the annular portion 1012 from the air inlet portion 1011 and is formed with upstream and downstream, the fuel gas flows back from downstream to upstream under the action of the annular portion 1012, and finally flows back to the junction of the air inlet portion 1011 and the annular portion 1012. Wherein, the upstream position of the gas is set to the separation section, and the gas flow velocity near the upstream is slower, and the flame ejected from the fire hole 102 is more stable. Moreover, since the output direction of the fire hole 102 is arranged at an acute angle to the radial direction of the annular part, the fuel gas of the blocking section accessory can be ignited by the fire transmission.

In addition, the setting of separation section can be the fixed installation space that provides of mounting bracket 600 below to make electron lighter and thermocouple on the mounting bracket 600 have less space of striking sparks with fire hole 102, thereby ensure that combustor 100 can carry out quick ignition to the spun gas.

In the embodiment of the present application, as shown in fig. 1 and 2, the annular portion 1012 has a start end tangential to the air inlet portion 1011, and a distal end of the annular portion 1012 communicates with an intersection of the air inlet portion 1011 and the annular portion 1012, wherein an arrow direction shown in the drawing is a flow direction of the fuel gas, and the blocking section is located at the distal end of the annular portion 1012. Since the flow rate of the gas is slow when the gas flows to the end after passing through the annular portion 1012, the flame ejected from the flame holes 102 is stable.

Further, the burner 100 further includes a flow guiding structure 50, the flow guiding structure 50 includes a flow guiding plate 501, the flow guiding plate 501 is disposed on the first body 10 or the second body 20, at least part of the flow guiding plate 501 is located on a side of the plurality of fire holes 102 away from the annular portion 1012, a vent hole 502 is disposed on the flow guiding plate 501, the vent hole 502 is concentrically disposed with the annular portion 1012, and the flow guiding plate 501 is used for guiding high temperature flue gas formed after combustion of fuel gas sprayed from the plurality of fire holes 102 to flow to the vent hole 502.

Specifically, the gas emitted from each fire hole 102 is ignited to generate flame, and the high temperature smoke generated by the flame flows to the ventilation hole 502 under the action of the deflector 501, and finally flows to the outside of the cooking appliance through the ventilation hole 502. The flow path from the high-temperature smoke generated by the flame to the vent 502 can be prolonged by arranging the guide plate 501, so that the flow duration of the high-temperature smoke is prolonged, and the baking or heating effect of the combustor 100 on the objects to be cooked is ensured.

In the embodiment of the present application, as shown in fig. 3,5 and 8, the first body 10 is disposed on top of the second body 20, the baffle 501 is disposed on the first body 10 or the second body 20, the baffle 501 has a protruding body, the protruding body is disposed at intervals from the plurality of fire holes 102 in the radial direction of the annular portion 1012 along the arrangement direction of the first body 10 and the second body 20, and the vent 502 is opened at a central position on the protruding body.

It should be appreciated that, in the combustion process of the burner 100, since the output direction of the fire hole 102 is set at an angle to the radial direction of the annular portion, a swirling flame can be formed after each fire hole 10 is ignited, and at this time, the air in the swirling flame is relatively stable, and by setting the protruding body on the deflector 501, a diversion space or a diversion surface can be formed, so as to guide or drive the flue gas formed after the gas is ignited to move toward the ventilation hole. Meanwhile, the protruding body is also beneficial to improving the overall structural strength of the second body 20, and the problem that the second body 20 deforms in the combustion process of the combustor 100 is reduced.

It should be noted that the protruding body is formed on the second body 20 and is formed as an integral structure with the second body 20, and in the embodiment of the present utility model, is a protrusion formed on the second body 20 by punching to ensure structural stability between the protruding structure and the second body 20.

Further, the baffle 501 is located radially inward of the annular portion 1012, and the ventilation holes 502 and the first body 10 or the second body 20 are provided on opposite sides of the plurality of fire holes 102, respectively, in the arrangement direction of the first body 10 and the second body 20. The gas sprayed from each fire hole 102 is ignited to generate flame, and the gas sprayed from the fire hole 102 forms high temperature smoke after burning, so that the high temperature smoke flows to the vent 502 under the action of the convex body of the deflector 501, and finally flows to the outside of the cooking utensil through the vent 502. The flow path from the heat generated by the flame to the vent 502 can be prolonged by arranging the guide plate 501, so that the circulation of smoke and the baking effect of the objects to be cooked are guaranteed.

Specifically, the baffle 501 is disposed on the second body 20, the baffle 501 has a connection section connected with the second body 20, and a protruding body converging toward the center of the annular portion 1012, the protruding body protrudes integrally toward one side of the first body 10, the protruding body makes the vent holes 502 and the connection section of the baffle 501 disposed on two sides of each fire hole 102, respectively, and at this time, the protruding body presents a truncated cone shape. The vent 502 is disposed in the middle of the baffle 501 and concentric with the annular portion 1012, and the fuel gas ejected from the fire hole 102 is blocked by the connection section and flows toward the vent 502 under the action of the protruding body. The flow path from the fire hole 102 to the vent hole 502 of heat generated by flame can be prolonged through the guide plate 501, so that the same smoke flow path distributed along the circumferential direction of the annular part 1012 is guaranteed, the combustion stability of the gas burner is further guaranteed, and the circulation of smoke and the baking effect of the objects to be cooked are guaranteed.

Further, the baffle 501 is formed with an inclined active surface due to the protrusion, and the angle between the active surface and the plane of the annular portion 1012 is a, wherein 0 ° < a <90 °, and the active surface is used for guiding the flue gas to flow to the ventilation hole.

Specifically, by limiting the included angle a between the acting surface and the plane where the annular portion 1012 is located, the high-temperature flue gas generated after the combustion of the fuel gas can move along with the guiding of the acting surface towards the direction away from the second body 20, then move along with the direction close to the second body 20 through the vent 502, the acting surface increases the flue gas flowing path flowing out from the fire hole 102, prolongs the residence time of the high-temperature flue gas, can block the negative pressure entrainment region formed by the fan above the combustor 100, enhances the stability of the flame, and is helpful for guaranteeing the combustion completion of the fuel gas.

In the embodiment of the present application, as shown in fig. 8, a side surface of the protruding body, which is close to the fire hole 102, is an action surface, and by defining an included angle a between the action surface and a plane where the annular portion 1012 is located, as an acute angle, when the fuel gas is ejected from the fire hole 102, the deflector 501 may have a certain flow blocking effect on the ejected fuel gas, and at this time, the flow rate of the mixed fuel gas may be reduced, and the mixed fuel gas flows along the deflector 501 in a direction close to the vent 502, so as to prolong the residence time of the high-temperature flue gas, and ensure that the flame is stabilized near the outlet of the fire hole 102.

It should be noted that, the included angle a between the acting surface and the plane where the annular portion 1012 is located includes, but is not limited to, 30 °, and the value of the included angle a may be 10 °, 20 °, 30 °, 40 °, 45 °, 50 °, 60 °.80 °, so as to prolong the flow time of the high-temperature flue gas.

Further, the burner 100 further includes a second connection structure provided on the housing for fixing the mounting frame 600. Specifically, by providing the second connection structure to fix the mounting frame 600, the electronic igniter and the thermocouple can be fixed to ensure that the burner 100 can ignite the sprayed gas.

In the embodiment of the present application, as shown in fig. 1, 3 and 5, the second connection structure is disposed on the first body 10 or the second body 20 between the first end and the second end. The number of second connection structures is two, and each second connection structure is provided with two mounting holes 222 arranged at intervals for riveting or clamping the mounting frame 600, which can be used for fixing the igniter or the thermocouple. Wherein, two second connection structure interval settings to be located between first end and the second end, help guaranteeing the stability of flame burning.

It should be noted that the second connection structure is formed on the second body 20 and is integrated with the second body 20, and in the embodiment of the present utility model, the second connection structure is a mounting hole 222 formed on the second body 20, so as to ensure that the mounting bracket 600 can be fixed on the second body 20. Of course, the mounting frame 600 may be disposed on the first body 10.

Further, as shown in fig. 1, 3 and 4, a mounting portion 221 is provided on the housing, and the mounting portion 221 is used to fix the burner 100 to the cooking appliance. Specifically, the mounting portion 221 is provided on the second body 20, and the mounting portion 221 includes a connection section extending in a direction away from the first body 10 and a fixing section provided on the extension section for fixed connection with the cooking appliance. The length of the connecting section is used to adjust the fixed position of the burner 100.

It should be noted that the mounting portion 221 is formed on the second body 20 and is integrally formed with the second body 20, and in the embodiment of the present utility model, is formed on the second body 20 by means of stamping, so as to ensure that the mounting portion 221 can be fixedly connected with the cooking appliance. Of course, the mounting portion 221 may be disposed on the first body 10.

As shown in fig. 9 to 12, the present utility model also proposes a cooking appliance including the burner 100 as above.

Specifically, the burner 100 is fixed on the cooking appliance through the mounting portion 221, the burner 100 is provided with a fire hole 102 and a cavity 101, wherein the cavity 101 is provided with an air inlet portion 1011 and an annular portion 1012, fuel gas of a fuel gas pipeline can be sprayed out through the fire hole 102 after entering the cavity 101, and combustion of the burner 100 is realized through ignition, and in the process of flowing out of the annular portion 1012, the output end of the air inlet portion 1011 is arranged at an acute angle to the direction from the air inlet portion to the center of the annular portion, so that swirl flame can be formed after ignition, the residence time of the flame is prolonged, the combustion of the fuel gas is ensured to be complete, and the using effect of the burner is improved.

In the embodiment of the application, the cooking appliance comprises a box 200, a fan assembly 300 is arranged at the top of the box 200, the fan assembly 300 is used for pumping out smoke in the box 200, a containing cavity 101 is arranged in the box 200, a burner 100 is fixedly connected to the top of the containing cavity 101, and a tray 400 is arranged below the burner 100. As shown in fig. 12, the output end of the gas pipe 500 is spaced from the intake end of the intake portion 1011. After being output from the gas pipe 500, the gas can entrain air and enter the accommodating cavity 101 after being mixed with the air, then flows clockwise in the accommodating cavity 101, finally flows out of the fire hole 102 and is ignited for combustion, and as the combustion is provided with the annular part 1012, the flame is sprayed out from the radial inner side of the annular part 1012, and the spraying direction and the radial direction of the annular part 1012 form an acute angle, when the cooking appliance works, swirl flame is formed in the box 200, the residence time of high-temperature flue gas is prolonged, the combustion of the gas is complete, and the using effect of the cooking appliance is ensured.

In this embodiment, the cooking device is a gas oven 1000 (in other embodiments, the cooking device is a gas stove, etc.), and the structure of other parts of the gas oven 1000 is referred to the prior art, and the disclosure is not repeated here.

The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims (11)

1. A burner, which is characterized in that, the burner includes:

the shell is provided with a containing cavity and a plurality of fire holes, the containing cavity comprises an air inlet part and an annular part which are communicated, the air inlet part is used for being communicated with a fuel 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 part and are respectively communicated with the annular part, and the plurality of fire holes are used for spraying fuel gas;

The fire hole is provided with an air inlet end, an air outlet end and a flow pipeline extending along a first direction, the air outlet end is communicated with the containing cavity through the flow pipeline and the air inlet end, the first direction and the second direction are arranged at an acute angle, and the second direction is the radial direction of the annular part.

2. The burner of claim 1, wherein the housing comprises a first body and a second body, the first body and the second body being connected by at least one first connection structure and forming the cavity and the plurality of fire holes.

3. The burner of claim 2, wherein the first connection structure is disposed radially inward of the annular portion.

4. A burner according to claim 3, wherein a sealing structure is provided between the first body and the second body, the sealing structure being annularly provided radially outwardly of the annular portion.

5. The burner of claim 4, wherein the sealing structure is a first flange structure formed on an edge of the first body.

6. The burner of claim 1, wherein the air inlet is coplanar with the annular portion and the air inlet is disposed tangentially to the annular portion.

7. The burner of claim 6, wherein the air inlet portion comprises an air inlet, a contraction section, a mixing section, an expansion section and an air outlet which are sequentially communicated, at least part of the flow cross section of the contraction section is in a tapered structure in the ventilation direction from the air inlet to the air outlet, and at least part of the flow cross section of the expansion section is in a gradual expansion structure.

8. The burner of claim 2, wherein the housing is provided with a first blocking structure disposed radially inward of the annular portion, the first blocking structure extending in the predetermined direction and being spaced from the plurality of fire holes, the first blocking structure and the spaced area between the plurality of fire holes forming a first flame path.

9. The burner of claim 1, further comprising a deflector having a vent hole formed therein, the vent hole being disposed inside the annular portion and concentric therewith, at least a portion of the deflector being located on one side of the plurality of fire holes, the deflector being configured to direct fuel gas emitted from the plurality of fire holes to the vent hole.

10. The burner of claim 2, wherein the first body or the second body is provided with a mounting portion thereon.

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