Burner and cooking utensil

Abstract

The combustor comprises a shell and a flow guide structure, the shell is provided with a containing cavity and a plurality of fire holes, the containing cavity comprises a gas inlet part and an annular part which are communicated, the gas inlet part is used for being communicated with a gas pipeline, and the fire holes are arranged at intervals in the preset direction; the fire holes are formed in the radial inner side of the annular part, communicate with the annular part and are used for spraying out fuel gas. The flow guide structure is provided with a flow guide plate, a vent hole is formed in the flow guide plate, the vent hole is formed in the inner side of the annular part and is concentric with the annular part, at least part of the flow guide plate is located on one side of the fire holes, and the flow guide plate is used for guiding fuel gas sprayed out of the fire holes to flow to the vent hole. According to the burner, the flow guide structure is arranged, after gas is ignited to generate high-temperature flue gas, the high-temperature flue gas can be guided to move towards the vent hole along the flow guide plate, the standing time of the high-temperature flue gas can be prolonged, and complete burning of the gas is guaranteed.

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 of the gas is complete directly affects the cooking effect of the food and the smoke emission of the burner.

[0005] However, the 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. The gas output from the fire holes is ignited to generate high-temperature smoke for baking or cooking food, and then the high-temperature smoke is extracted by the fan of the cooking utensil. Due to the different output flow rates of the gas and the different distances relative to the fan, part of the ejected gas is extracted from the cooking utensil before it is completely burned or stays for a short time, resulting in a waste of resources. Utility Model Content

[0006] The purpose of the utility model is to at least solve the problem that the high-temperature flue gas generated by the existing burner has a short heating time during combustion. This purpose is achieved through the following technical solutions:

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

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

[0009] A guide structure is arranged on the shell, the guide structure has a guide plate, and the guide plate is provided with air holes. At least part of the guide plate is located on the side of the multiple fire holes away from the annular portion. The air holes are arranged concentrically with the annular portion. The guide plate is used to guide the smoke formed after the combustion of the gas ejected from the multiple fire holes to flow toward the air holes.

[0010] According to the utility model, the burner includes a shell and a flow guide structure, wherein the shell has a cavity and a fire hole, and 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 burner is burned by ignition. The ignited gas will generate high-temperature flue gas, and by providing a flow guide structure, the high-temperature flue gas can move along the guide plate toward the vent hole, thereby extending the residence time of the high-temperature flue gas, which helps to ensure the complete combustion of the gas.

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

[0012] In some embodiments of the present invention, the housing includes a first body and a second body, and the first body and the second body together form the cavity and the plurality of fire holes;

[0013] The guide plate is connected and arranged on the first body or the second body. The guide plate has a protruding body. Along the arrangement direction of the first body and the second body, the protruding body protrudes from the first body or the second body. Along the radial direction of the annular portion, the protruding body is spaced apart from the multiple fire holes, and the ventilation holes are opened on the protruding body.

[0014] In some embodiments of the present invention, the guide plate is disposed on the second body, and along the arrangement direction of the first body and the second body, the vent hole and the second body are respectively disposed on opposite sides of the plurality of fire holes.

[0015] In some embodiments of the utility model, the guide plate has an inclined active surface, the angle between the active surface and the plane where the annular portion is located is a, where 0°<a<90°, and the active surface is used to guide the smoke to flow toward the vent hole.

[0016] In some embodiments of the utility model, a first blocking structure is provided on the first 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.

[0017] In some embodiments of the present invention, the first blocking structure is a first protruding structure formed on the first body.

[0018] In some embodiments of the present invention, the first blocking structure has a first end and a second end, and along the preset direction, the second end is spaced apart from the first end, and the first end and the second end are both arranged on one side of the intersection of the air inlet portion and the annular portion.

[0019] In some embodiments of the present invention, the burner further includes at least one first connection structure, the first body and the second body are connected to each other through the at least one first connection structure, and all of the first connection structures are arranged radially inwardly of the annular portion.

[0020] In some embodiments of the present invention, a sealing structure is further provided between the first body and the second body, and the sealing structure is provided on the radially outer side of the annular portion.

[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 burner includes a shell and a flow guide structure, the shell has a cavity and a fire hole, and 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 burner is burned by ignition. The ignited gas will generate high-temperature smoke, and by providing a flow guide structure, the high-temperature smoke can move along the guide plate toward the vent, thereby extending the residence time of the high-temperature smoke, which helps to ensure the complete combustion of the gas. 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 is schematically shown (the thick black arrow line in the figure is the flow direction of the gas in the cavity);

[0026] Figure 2 for Figure 1A schematic diagram of the structure of the burner shown in another perspective (the thick black arrow line in the figure indicates the flow direction of the gas in the cavity);

[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 1 A schematic diagram of the structure of the second body shown in FIG.

[0030] Figure 6 for Figure 2 An enlarged structural diagram of the A portion shown in FIG.

[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 cross-sectional view of the BB portion of the burner shown in ;

[0033] Fig. 9 The schematic diagram shows a partial structure of a cooking appliance according to an embodiment of the utility model at a certain viewing angle;

[0034] Fig.10 for Fig. 9 A schematic diagram of the partial structure of the cooking appliance shown in FIG. 1 under a second viewing angle (the thick black arrow line in the figure indicates the flow direction of the high-temperature smoke);

[0035] Fig.11 for Fig. 9 A schematic diagram of a partial structure of a cooking appliance shown in FIG. 1 from a third viewing angle;

[0036] Fig.12 for Fig.11 Schematic diagram of the enlarged structure of section C shown in FIG.

[0037] The reference numerals are as follows:

[0038] 1000. Oven;

[0039] 100, burner; 200, box; 300, fan assembly; 400, tray; 500, gas pipe; 600, mounting frame;

[0040] 101. cavity; 102. fire hole;

[0041] 1011. air inlet portion; 1012. annular portion;

[0042] 10. The first ontology;

[0043] 11. first cavity; 12. first plate body; 13. first connecting portion; 14. first avoidance portion; 15. fire hole structural cavity;

[0044] 111, first contraction section; 112, first diffusion section; 113, first mixing section;

[0045] 20. Second entity;

[0046] 21. second cavity; 22. second plate body; 23. second connecting portion; 24. second avoidance portion;

[0047] 211, second contraction section; 212, second diffusion section; 213, second mixing section;

[0048] 221, mounting portion; 222, mounting hole;

[0049] 30. A first connection structure;

[0050] 40. Sealing structure;

[0051] 50. Diversion structure;

[0052] 501, guide plate; 502, vent hole;

[0053] 60. A first blocking structure. DETAILED DESCRIPTION

[0054] 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.

[0055] 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.

[0056] 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.

[0057] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both above and below orientations.

[0058] like Figures 1 to 9 As shown, according to an embodiment of the present utility model, a burner 100 is provided, and the burner 100 is used to be arranged on a cooking utensil, and specifically comprises a shell and a flow guide structure 50. The shell has a cavity 101 and a fire hole 102, and the gas pipeline can be connected to the cavity 101. There are multiple fire holes 102, and all the fire holes 102 are arranged at intervals along a preset direction on the burner 100, and each fire hole 102 is connected to the cavity 101, and the gas in the cavity 101 can be ejected through the fire hole 102.

[0059] Further, the shell includes a first body 10 and a second body 20. The first body 10 and the second body 20 are connected to each other, and the first body 10 and the second body 20 together form a cavity 101 and a fire hole 102. The cavity 101 includes an air inlet 1011 and an annular portion 1012 that are connected and arranged in communication. The air inlet 1011 is used to communicate with the gas pipeline, and all the fire holes 102 are arranged on the radial inner side of the annular portion 1012 and are respectively connected with the annular portion 1012.

[0060] Furthermore, the guide structure 50 includes a guide plate 501, which is arranged on the first body 10 or the second body 20, and at least part of the guide plate 501 is located on the side of the multiple fire holes 102 away from the annular portion 1012. The guide plate 501 is provided with an air vent 502, and the air vent 502 is concentrically arranged with the annular portion 1012. The guide plate 501 is used to guide the high-temperature flue gas formed after the combustion of the gas ejected from the multiple fire holes 102 to flow toward the air vent 502.

[0061] Specifically, the first body 10 and the second body 20 are connected and fixed to each other, wherein a fire hole 102 and a cavity 101 are formed between the first body 10 and the second body 20. After the gas in the gas pipeline enters the cavity 101, it can be ejected through the fire hole 102 and ignited to realize the combustion of the burner 100. The ignited gas will generate high-temperature flue gas. By setting the guide structure 50, the high-temperature flue gas can move along the guide plate 501 toward the vent 502, thereby extending the residence time of the high-temperature flue gas to achieve complete combustion of the gas, thereby avoiding incomplete combustion of the gas.

[0062] It is important to understand that Figure 1 and Figure 2 As shown, when the burner 100 is in use, the gas in the cavity 101 is ejected through the fire hole 102, and the ejected gas is ignited at the position of a certain fire hole 102, and the ignited gas burns to form a ring flame. The guide plate 501 is arranged on the radial inner side of the annular portion 1012, and the vent hole 502 is arranged concentrically with the annular portion 1012. At this time, the gas is ejected through the fire hole 102 and then burns. The high-temperature flue gas generated by the combustion converges along the guide plate 501 toward the vent hole 502, and finally flows out from the vent hole 502 to extend the flow path and flow time of the high-temperature flue gas, thereby helping to ensure that the gas can be completely burned, and further ensuring that the burner 100 can be fully burned.

[0063] 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.

[0064] It should be noted that the air inlet 1011 of the gas burner has an air inlet and an air outlet, and the air inlet is used to receive the gas output from the gas pipeline and the air. The gas and air flowing into the air inlet 1011 can be set according to a preset ratio so that the gas entering the cavity 101 forms a mixed gas to meet the requirements of gas combustion.

[0065] In the implementation mode of the present application, Figure 1 and Figure 2 As shown, the air inlet 1011 and the annular portion 1012 are located in the same plane, and the air outlet of the air inlet 1011 is arranged tangent to the annular portion 1012, wherein the arrow direction shown in the figure is the flow direction of the gas. The air inlet 1011 and the annular portion 1012 are arranged tangent to each other, so that the resistance encountered by the gas in the process of entering the annular portion 1012 from the air inlet 1011 can be minimized, and the collision of the gas with the inner wall of the annular portion 1012 when entering the annular portion 1012 can be reduced, thereby reducing the kinetic energy loss of the gas mixture. At the same time, the flow path of the unburned mixed gas can be made longer, and the residence time of the high-temperature flue gas can be made longer, which is conducive to the combustion of the gas mixture, thereby reducing the emission of the burner 100.

[0066] Furthermore, the fire hole 102 has an air inlet end, an air outlet end, and a flow pipe extending along the first direction. The air outlet end is connected to the cavity 101 through the flow pipe and the air inlet end. The first direction and the second direction are set at an acute angle, and the second direction is the radial direction of the annular portion.

[0067] Specifically, the housing has a cavity 101 and a fire hole 102, wherein the cavity 101 has an air inlet 1011 and an annular portion 1012. After the gas of the gas pipeline flows into the annular portion 1012 through the air inlet 1011, it can be ejected through the fire hole 102 and ignited to realize the combustion of the burner 100. Since the annular portion 1012 is an annular structure, and the fire hole 102 is arranged on the radial inner side of the annular portion 1012, by limiting the output direction of the fire hole 102 to be arranged at an angle with the radial direction of the annular portion, a swirl flame can be formed after ignition, the residence time of the flame is extended, and the combustion of the gas is guaranteed to be complete, so as to solve the problem of poor combustion stability of the existing burner 100.

[0068] It is important to understand that Figure 1 and Figure 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. Since the output direction of the gas outlet end of the fire hole 102 is limited and the structure of the annular portion 1012 is matched, the ejection direction of the flame can be adjusted, and then a ring-shaped swirl flame can be formed after ignition, which helps to extend the residence time of the flame and ensure the complete combustion of the gas. At the same time, it can also reduce the collision between flames, thereby causing heat loss and improving the use effect of the burner.

[0069] Furthermore, if Figure 3 , Figure 5 and Figure 8As shown, the first body 10 is arranged on the top of the second body 20, and the guide plate 501 is arranged on the first body 10 or the second body 20. The guide plate 501 has a protruding body. Along the arrangement direction of the first body 10 and the second body 20 and along the radial direction of the annular portion 1012, the protruding body is spaced apart from the multiple fire holes 102, and the ventilation hole 502 is opened at the center position of the protruding body.

[0070] Specifically, during 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 swirl flame can be formed after each fire hole 102 is ignited, and at this time, the air in the swirl flame is relatively stable. By providing a protruding body on the guide plate 501, a guide space or a guide surface can be formed to guide or drive the smoke formed after the gas is ignited to move toward the vent.

[0071] In some embodiments of the present invention, Figure 1 , Figure 3 and Figure 8 As shown, the guide structure 50 is arranged on the second body 20, and the protruding body is a second protruding structure of the guide plate 501 protruding toward one side of the first body 10. Specifically, the protruding body is arranged as a protruding structure protruding toward one side of the first body 10, so that the guide plate 501 can block the gas ejected from the fire hole 102 and guide the high-temperature flue gas formed after the gas is ignited to flow toward the vent hole, which helps 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.

[0072] 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 protrusion structure and the second body 20 .

[0073] Furthermore, the guide plate 501 is located radially inside the annular portion 1012, and along the arrangement direction of the first body 10 and the second body 20, the vents 502 and the first body 10 or the second body 20 are respectively arranged on opposite sides of the plurality of fire holes 102. The gas ejected from each fire hole 102 generates flames after being ignited. Since the gas ejected from the fire hole 102 forms high-temperature smoke after combustion, the high-temperature smoke will flow toward the vents 502 under the action of the protruding body of the guide plate 501, and finally flow to the outside of the cooking utensil through the vents 502. By providing the guide plate 501, the flow path of the heat generated by the flame to the vents 502 can be extended, thereby ensuring the flow of smoke and the baking effect on the items to be cooked.

[0074] Specifically, the guide plate 501 is arranged on the second body 20, and the guide plate 501 has a connecting section connected to the second body 20, and a protruding body converging toward the center of the annular portion 1012, and the protruding body as a whole protrudes toward one side of the first body 10, and the protruding body makes the vent 502 of the guide plate 501 and the connecting section respectively arranged on both sides of each fire hole 102, and at this time, the protruding body presents a truncated cone shape. Among them, the vent 502 is arranged in the middle of the guide plate 501, and is arranged concentrically with the annular portion 1012, and the gas ejected from the fire hole 102 is blocked by the connecting section and flows toward the vent 502 under the action of the protruding body. By setting the guide plate 501, the flow path of the heat generated by the flame from the fire hole 102 to the vent 502 can be extended, which helps to ensure that the flue gas flow path distributed circumferentially along the annular portion 1012 is the same, and further ensures the stability of the combustion of the gas burner, thereby ensuring the flow of flue gas and the baking effect of the cooking items.

[0075] Furthermore, the guide plate 501 has an inclined action surface due to the protrusion, and the angle between the action surface and the plane where the annular portion 1012 is located is a, wherein 0°<a<90°, and the action surface is used to guide the smoke to flow toward the vent hole.

[0076] Specifically, by limiting the angle a between the active surface and the plane where the annular portion 1012 is located, the high-temperature flue gas generated after the combustion of the gas can move in the direction away from the second body 20 under the guidance of the active surface, and then move in the direction close to the second body 20 through the air vent 502. The active surface increases the flow path of the flue gas flowing out of the fire hole 102, prolongs the residence time of the high-temperature flue gas, and can block the negative pressure suction area formed by the fan above the burner 100, thereby enhancing the stability of the flame and helping to ensure the complete combustion of the gas.

[0077] In the implementation mode of the present application, Figure 8 As shown, the side surface of the protruding body close to the fire hole 102 is the active surface, and the angle a between the active surface and the plane where the annular portion 1012 is located is limited to an acute angle. When the gas is ejected from the fire hole 102, the guide plate 501 will have a certain flow-blocking effect on the ejected gas, and at this time, the flow rate of the mixed gas will be reduced and flow along the guide plate 501 toward the direction close to the vent 502, so as to extend the residence time of the high-temperature flue gas and ensure that the flame is stable near the outlet of the fire hole 102.

[0078] It should be pointed out that the angle a between the active surface and the plane where the annular portion 1012 is located includes but is not limited to 30°, and the value of the angle a can be 10°, 20°, 30°, 40°, 45°, 50°, 60°...80°, so as to extend the flow time of the high-temperature flue gas.

[0079] Furthermore, if Figures 3 to 5As shown, the first body 10 has a first plate 12 and a first cavity 11, the first plate 12 is arranged outside the opening of the first cavity 11 and arranged along the circumferential direction, the second body 20 has a second plate 22 and a second cavity 21, the second plate 22 is arranged outside the opening of the second cavity 21 and arranged along the circumferential direction, and a fire hole construction cavity 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 a structure of a cavity 101, and the fire hole construction cavity abuts against the corresponding plate and encloses a plurality of fire holes 102.

[0080] Specifically, the first body 10 has a fire hole structure cavity, a first plate body 12 and a first cavity 11, wherein the fire hole structure cavity, 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 and improve the convenience of processing, so that the manufacturing cost can be reduced.

[0081] In the embodiment of the present application, 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 is extended 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 of setting the fire hole structural cavity, the fire hole structural cavity is formed on the first plate 12, and the fire hole structural cavity 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 is extended 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 of setting 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 of the fire hole construction cavity is against the top of the second plate body 22, and a plurality of fire holes 102 are formed between the corrugated structure of the fire hole construction cavity and the second plate body 22.

[0082] 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.

[0083] 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 structural cavity (fire hole 102 press-molded) 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 structural cavity 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 is in contact with the fire hole structure cavity and encloses the fire hole structure cavity 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.

[0084] 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.

[0085] In addition, if Figure 4 and Figure 5 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.

[0086] It should be pointed out that the fire hole construction cavity also has a variety of implementation methods, 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, part of the fire hole construction cavity is formed on the first plate body 12, and the other part of the fire hole construction cavity is formed on the second plate body 22.

[0087] Further, as 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. Specifically, all 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] 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 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.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] 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 1 , Figure 2 , Figure 3 and 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.

[0097] 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.

[0098] Furthermore, if Figure 3 and Figure 6 As 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.

[0099] 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.

[0100] 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.

[0101] 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.

[0102] 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.

[0103] 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.

[0104] 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.

[0105] 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.

[0106] It should be pointed out that, in the embodiment of the present utility model, the spacing distance L between the fire hole 102 and the first blocking structure 60 can be 3 mm, 3.5 mm, 4 mm, 4.5 mm, ... 5 mm.

[0107] 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.

[0108] 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.

[0109] 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.

[0110] It should be noted that in the embodiments of the present invention, the value of H can 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 can be 1 mm, 1.5 mm, 2 mm, 2.5 mm, ... 3 mm.

[0111] In some embodiments of the present invention, Figure 2 , Figure 5 and Figure 8As 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.

[0112] It should be pointed out that the first protrusion structure is formed on the second body 20 and is an integral structure with the second body 20. In the embodiment of the present utility model, the protrusion is formed on the second body 20 by stamping to ensure the structural stability between the first protrusion structure and the second body 20.

[0113] 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 both the first end and the second end are arranged on one side of the intersection of the air inlet portion 1011 and the annular portion 1012 .

[0114] Specifically, the second end is spaced apart from the first end and forms a blocking section. Along the flow direction of the gas, the first end and the second end are both arranged upstream of the intersection of the air inlet 1011 and the annular portion 1012. Since the air inlet 1011 is tangent to the outer circle of the annular portion 1012, when the gas flows from the air inlet 1011 to the annular portion 1012, it flows along a preset direction and forms an upstream and a downstream. Under the action of the annular portion 1012, the gas flows back from the downstream to the upstream, and finally flows back to the intersection of the air inlet 1011 and the annular portion 1012. Among them, the blocking section is arranged at the upstream position of the gas, and the gas flow rate near the upstream is slow, and the flame ejected from the fire hole 102 is relatively stable. In addition, the setting of the blocking section can provide an installation space for the fixing of the following mounting frame 600, so that the electronic igniter and the thermocouple on the mounting frame 600 have a smaller ignition space with the fire hole 102, thereby ensuring that the burner 100 can quickly ignite the ejected gas.

[0115] In the implementation mode of the present application, Figure 1 and Figure 2 As shown in the figure, the annular portion 1012 has a starting end tangent to the air inlet portion 1011, and the end of the annular portion 1012 is connected to the intersection of the air inlet portion 1011 and the annular portion 1012, wherein the arrow direction shown in the figure is the flow direction of the gas, and the blocking section is at the end of the annular portion 1012. Since the gas flows slowly when it flows to the end after passing through the annular portion 1012, the flame ejected from the fire hole 102 is relatively stable.

[0116] In addition, the burner 100 further includes a second connection structure, which is arranged on the housing and is used to fix the mounting frame 600. Specifically, by setting 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 ejected gas.

[0117] In the implementation mode of the present application, Figure 1 , Figure 3 and Figure 5 As shown, the second connection structure is arranged on the first body 10 or the second body 20 and is located between the first end and the second end. There are two second connection structures, and each second connection structure is provided with two spaced mounting holes 222 for riveting or clamping the mounting frame 600, and the mounting member can be used to fix the lighter or the thermocouple. The two second connection structures are spaced and located between the first end and the second end, which helps to ensure the stability of the flame combustion.

[0118] It should be noted that the second connection structure is formed on the second body 20 and is an integral structure with the second body 20. In the embodiment of the present utility model, the second connection structure is a mounting hole 222 opened on the second body 20 to ensure that the mounting member can be fixed on the second body 20. Of course, in addition to this, the mounting can also be set on the first body 10.

[0119] Furthermore, if Figure 2 , Figure 5 and Figure 7 As shown, a mounting portion 221 is provided on the housing, and the mounting portion 221 is used to fix the burner 100 on the cooking utensil. Specifically, the mounting portion 221 is provided on the second body 20, and the mounting portion 221 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.

[0120] It should be noted that the mounting portion 221 is formed on the second body 20 and is an integral structure with the second body 20. In the embodiment of the present utility model, the mounting structure is formed on the second body 20 by stamping to ensure that the mounting portion 221 can be fixedly connected to the cooking utensil. Of course, in addition to this, the mounting portion 221 can also be set on the first body 10.

[0121] like Figures 9 to 12 As shown, the utility model also proposes a cooking appliance, which includes the burner 100 as above.

[0122] Specifically, the burner 100 is fixed on the cooking utensil through the mounting portion 221. The burner 100 has a fire hole 102 and a cavity 101 formed between the first body 10 and the second body 20, wherein the cavity 101 has an air inlet portion 1011 and an annular portion 1012. After the gas from the gas pipeline enters the cavity 101, it can be ejected through the fire hole 102 and ignited to realize the combustion of the burner 100. During the flow of the burner 100 in the annular portion 1012, the flow limiting structure located in the annular portion 1012 can effectively adjust the flow rate and flow velocity of the gas by reducing the flow cross-section of the annular portion 1012, thereby making the flow velocity of each outlet on the annular portion 1012 uniform, which helps to improve the stability of gas combustion.

[0123] In an embodiment of the present application, the cooking utensil includes a box body 200, a fan assembly 300 is arranged on the top of the box body 200, and the fan assembly 300 is used to extract the smoke inside the box body 200. The box body 200 has a cavity 101 inside, and a burner 100 is fixedly connected to the top of the cavity 101. A tray 400 is arranged below the burner 100, wherein a guide plate 501 is recessed in a direction close to the tray 400. When the cooking utensil is working, the top fan rotates and draws gas upward. Under the guiding effect of the guide structure 50, the high-temperature smoke flows downward along the guide plate 501 and converges to the center of the annular portion, and then flows out from the center upward through the vent, thereby extending the residence time of the high-temperature smoke and facilitating complete combustion.

[0124] The air inlet 1011 of the burner 100 extends to the outside of the box 200. A gas pipe 500 is provided outside the box 200. Fig.12 As shown, the output end of the gas pipe 500 is spaced apart from the inlet end of the inlet portion 1011. After the gas is output from the gas pipe 500, it will 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, forming a swirling annular flame, which helps to ensure the use effect of the cooking appliance.

[0125] 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.

[0126] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A burner, characterized in that: The burner comprises: A shell, the shell having a cavity and a plurality of fire holes, the cavity comprising an air inlet portion and an annular portion which are connected, the air inlet portion being used to communicate with a gas pipeline, the plurality of fire holes being arranged at intervals along a preset direction, the plurality of fire holes being arranged radially inward of the annular portion and respectively connected with the annular portion, and the plurality of fire holes being used to eject gas; A guide structure is arranged on the shell, the guide structure has a guide plate, and the guide plate is provided with air holes. At least part of the guide plate is located on the side of the multiple fire holes away from the annular portion. The air holes are arranged concentrically with the annular portion. The guide plate is used to guide the smoke formed after the combustion of the gas ejected from the multiple fire holes to flow toward the air holes.

2. The burner according to claim 1, characterized in that The shell comprises a first body and a second body, wherein the first body and the second body together form the cavity and the plurality of fire holes; The guide plate is connected and arranged on the first body or the second body. The guide plate has a protruding body. Along the arrangement direction of the first body and the second body, the protruding body protrudes from the first body or the second body. Along the radial direction of the annular portion, the protruding body is spaced apart from the multiple fire holes, and the ventilation holes are opened on the protruding body.

3. The burner according to claim 2, characterized in that: The guide plate is arranged on the second body, and along the arrangement direction of the first body and the second body, the vent hole and the second body are respectively arranged on opposite sides of the plurality of fire holes.

4. The burner according to claim 2, characterized in that: The guide plate has an inclined action surface, the angle between the action surface and the plane where the annular portion is located is a, wherein 0°<a<90°, and the action surface is used to guide the smoke to flow toward the vent hole.

5. The burner according to claim 2, characterized in that: A first blocking structure is provided on the first 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.

6. The burner according to claim 5, characterized in that The first blocking structure is a first protruding structure formed on the first body.

7. The burner according to claim 5, characterized in that The first blocking structure has a first end and a second end. The second end is spaced apart from the first end along the preset direction. The first end and the second end are both arranged on one side of the intersection of the air inlet portion and the annular portion.

8. The burner according to any one of claims 2 to 7, characterized in that The burner further includes at least one first connection structure, the first body and the second body are connected to each other through the at least one first connection structure, and all of the first connection structures are arranged radially inside the annular portion.

9. The burner according to claim 8, characterized in that A sealing structure is further disposed between the first body and the second body, and the sealing structure is disposed radially outside the annular portion.

10. The burner according to any one of claims 2 to 7, 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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