Burner and cooking appliance

Abstract

A burner, comprising: a main body (110), comprising a gas accommodating cavity (111), wherein the gas accommodating cavity is used for accommodating a combustible gas; a combustion mesh assembly, wherein the opening of the gas accommodating cavity faces the combustion mesh assembly, so that the combustible gas can be combusted on the surface of the combustion mesh assembly, and the combustion mesh assembly is arranged towards the outside to radiate thermal energy to the outside; and a flashback arrestor assembly (130), wherein the flashback arrestor assembly being used for preventing flames on the combustion mesh assembly from entering the gas accommodating cavity.

Description

Burners and cooking appliances

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the Chinese patent application with application number: 202311272516.7 and application date of September 28, 2023, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into this application as a reference.

[0003] This application is based on the Chinese patent application with application number: 202311272286.4 and application date of September 28, 2023, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into this application as a reference.

[0004] This application is based on the Chinese patent application with application number: 202322653402.9 and application date of September 28, 2023, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into this application as a reference. Technical Field

[0005] The present application belongs to the technical field of cooking equipment, and specifically relates to a burner and a cooking utensil. Background Art

[0006] A Chinese patent document with publication number CN113701155B discloses a burner, the combustion surface of which is composed of a ceramic plate, on which fully premixed gas burns, and the ceramic plate generates radiant heat after being heated. The ceramic plate has a thickness of more than 10 mm, and the ceramic plate has a through hole that penetrates the ceramic plate in the thickness direction. The flame burns on a single through hole, and when the through hole is smaller than a certain diameter, it can prevent the occurrence of dynamic flame backfire. The combustion surface of the ceramic plate uses its own thickness of more than 10 mm and the good high thermal resistance of the ceramic itself to prevent heat from being transferred from the combustion side to the ceramic plate and the premixed diverter cavity, thereby preventing static backfire. However, the ceramic plate is prone to cracking and chipping, has poor impact resistance, and the overall burner manufacturing process is complex, and the combustion surface is relatively thick.

[0007] Chinese patent document CN117091131A discloses an infrared burner whose combustion zone consists of folded metal strips composed of flat and corrugated strips, which are alternately placed to form flame holes. Furthermore, the heat-transferring metal strips are very thin, which reduces the transfer of heat from the combustion side to the contact side of the premixing diversion chamber, preventing the premixing diversion side from overheating and thus preventing backfire. However, the metal strips' poor deformability and complex assembly structure limit their use cases. Furthermore, the manufacturing process requires welding at the joints between the metal strips, which is a complex process and high in cost.

[0008] Chinese patent publication number CN109716023A discloses a premixed gas burner. A single piece of metal fiber (i.e., the burner deck) is fixed to a metal plate structure. The upwardly arched metal plate forms a mixing chamber within the structure. Gas / air flows through perforations in the metal plate and burns on the burner deck. The metal fiber utilizes complex internal airflow channels to increase heat exchange between the fiber mesh and the mixed gas flow, reducing the temperature on the contact side with the mixing and diversion chamber, thereby preventing backfire. However, the complex weaving process and high cost of this metal fiber have hindered widespread adoption in the civilian industry.

[0009] In summary, there is an urgent need for a burner with high strength and low cost.

[0010] Application Contents

[0011] To this end, the present application proposes a burner that forms a combustion surface through a combustion mesh assembly, has sufficient strength and is relatively low in cost.

[0012] The present application also provides a cooking appliance comprising the burner.

[0013] The burner according to the embodiment of the present application includes: a main body, including a gas accommodating cavity, which is used to accommodate combustible gas; a combustion mesh assembly, the opening of the gas accommodating cavity is facing the combustion mesh assembly, so that the combustible gas can burn on the surface of the combustion mesh assembly, and the combustion mesh assembly is arranged to face the outside to radiate heat energy to the outside; and an anti-backfire assembly, which is used to prevent the flame on the combustion mesh assembly from entering the gas accommodating cavity.

[0014] According to the burner of the embodiment of the present application, the combustion surface is formed by the combustion mesh assembly, which has sufficient strength and low cost.

[0015] Optionally, the combustion mesh assembly includes a plurality of combustion mesh holes, and the combustion mesh assembly is constructed so that the equivalent diameter of the combustion mesh holes is ≤0.8 mm; in the thickness direction of the combustion mesh assembly, the anti-backfire assembly is arranged side by side with the combustion mesh assembly, and the anti-backfire assembly satisfies at least one of the following conditions: "The anti-backfire assembly is constructed to have heat insulation properties and is located between the combustion mesh assembly and the main body; the anti-backfire assembly exchanges heat with the combustion mesh assembly to dissipate heat from the combustion mesh assembly."

[0016] Optionally, the anti-backfire component is located on a side of the combustion net component facing the main body.

[0017] Optionally, the burner further comprises: a support mesh assembly installed between the combustion mesh assembly and the anti-backfire assembly, wherein the support mesh assembly is used to support the combustion mesh assembly.

[0018] Optionally, there is a distance between the anti-backfire component and the supporting mesh component, and there is a distance between the supporting mesh component and the combustion mesh component.

[0019] Optionally, the support net assembly includes at least one support net, and the support net is made of metal material.

[0020] Optionally, the mesh size of the support net ranges from 5 mesh to 40 mesh.

[0021] Optionally, the thickness of the support mesh ranges from 0.2 mm to 2 mm.

[0022] Optionally, the combustion net assembly includes at least one combustion net, and the combustion net is made of metal material.

[0023] Optionally, the mesh size of the combustion net ranges from 40 mesh to 200 mesh.

[0024] Optionally, the combustion net has a thickness ranging from 0.1 mm to 0.5 mm.

[0025] Optionally, the surface porosity of the combustion net is ≥40%.

[0026] Optionally, the anti-backfire assembly includes at least one backfire barrier net, and the backfire barrier net is made of metal material.

[0027] Optionally, the mesh size of the tempered barrier mesh ranges from 40 mesh to 200 mesh.

[0028] Optionally, the tempered barrier mesh has a thickness ranging from 0.15 mm to 2 mm.

[0029] Optionally, the tempering barrier net includes a plurality of tempering-proof mesh holes, and the tempering barrier net is configured to satisfy: 0.8 mm < equivalent diameter of each tempering-proof mesh hole ≤ 3 mm.

[0030] Optionally, the anti-backfire assembly includes a plurality of anti-backfire meshes, and the ratio of the equivalent diameter of the anti-backfire meshes to the equivalent diameter of the combustion meshes is in the range of 1 to 60.

[0031] Optionally, the anti-backfire component is in point contact with the combustion mesh component.

[0032] Optionally, the anti-backfire component is a wave net.

[0033] Optionally, there are multiple anti-backfire assemblies, and the anti-backfire assemblies are distributed on both sides of the combustion net assembly; or, multiple anti-backfire assemblies are located on the same side of the combustion net assembly.

[0034] Optionally, the anti-backfire component is a piece of heat-insulating material filled between the combustion net component and the main body.

[0035] Optionally, the anti-tempering component is thermal insulation wool or quartz wool.

[0036] Optionally, the main body includes: a shell; a guide plate connected to the shell, the shell and the guide plate together form the gas accommodating chamber, the guide plate has a plurality of guide holes, and the guide holes are used to discharge the combustible gas in the gas accommodating chamber to the combustion network assembly.

[0037] Optionally, the plurality of guide holes are evenly distributed on the guide plate.

[0038] Optionally, the burner further includes: a gas pipe connected to the shell and communicated with the gas accommodating chamber, wherein the gas pipe is used to input the combustible gas into the gas accommodating chamber.

[0039] Optionally, the gas pipe extends into the gas accommodating cavity, and a plurality of exhaust holes are provided on the surface of the gas pipe.

[0040] The cooking appliance according to the embodiment of the present application includes the burner described in the above technical solution.

[0041] Optionally, the cooking appliance comprises a pizza oven. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0043] FIG1 shows one structural schematic diagram of a burner according to an embodiment of the present application;

[0044] FIG2 shows a second structural schematic diagram of a burner according to an embodiment of the present application;

[0045] FIG3 shows a third structural diagram of a burner according to an embodiment of the present application;

[0046] FIG4 shows a partial view of a combustion network according to an embodiment of the present application;

[0047] FIG5 shows a simplified structural diagram of a burner according to an embodiment of the present application;

[0048] FIG6 is a fourth schematic diagram of a burner according to an embodiment of the present application;

[0049] FIG7 is an exploded view of the burner in FIG6 ;

[0050] FIG8 is a second exploded view of the burner in FIG6 ;

[0051] FIG9 is a schematic diagram of a combustion network according to an embodiment of the present application;

[0052] FIG10 is a schematic diagram showing the calculation results of quenching diameter at different temperatures and equivalence ratios;

[0053] FIG11 is a schematic diagram of gas combustion at the combustion network;

[0054] FIG12 is a schematic diagram showing a comparison of the effects of embodiments of combustion meshes with different equivalent diameters;

[0055] FIG13 is a schematic diagram of the cooperation between the wavy anti-backfire assembly and the combustion net;

[0056] FIG14 is a second schematic diagram of the coordination of the wavy anti-backfire assembly and the combustion net;

[0057] FIG15 is a cross-sectional view of the burner in FIG6;

[0058] FIG16 is an enlarged view of portion A in FIG15 ;

[0059] FIG. 17 is a schematic diagram of a cooking appliance according to an embodiment of the present application.

[0060] Figure numerals: 100, burner; 110, main body; 111, gas containing chamber; 112, shell; 113, guide plate; 114, guide hole; 120, combustion net assembly; 121, combustion net; 130, anti-backfire assembly; 131, backfire barrier net; 140, support net assembly; 141, support net; 150, gas pipe; 151, exhaust hole; 152, first diverter plate; 200, cooking utensil. DETAILED DESCRIPTION

[0061] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0062] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, "multiple" means two or more.

[0063] In the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0064] A burner 100 provided according to some embodiments of the present application is described below with reference to FIG. 1 to FIG. 5 .

[0065] In one embodiment of the present application, as shown in Figures 1, 2, 3 and 4, the present application proposes a burner 100, including: a main body 110, including a gas accommodating chamber 111, the gas accommodating chamber 111 is used to accommodate combustible gas; a combustion mesh assembly 120, the opening of the gas accommodating chamber 111 faces the combustion mesh assembly 120, so that the combustible gas can burn on the surface of the combustion mesh assembly 120, and the combustion mesh assembly 120 is set to face the outside to radiate heat energy to the outside; an anti-backfire assembly 130, located on the side of the combustion mesh assembly 120 facing the main body 110, the anti-backfire assembly 130 is used to prevent the flame on the combustion mesh assembly 120 from entering the gas accommodating chamber 111.

[0066] The burner 100 proposed in this application can be used in a cooking appliance. When in operation, the burner 100 can heat the interior of the cooking appliance to heat and cook food. The burner 100 includes a main body 110, a combustion mesh assembly 120, and an anti-backfire assembly 130. The main body 110 includes a gas receiving chamber 111 for receiving combustible gas. The combustion mesh assembly is used to burn the combustible gas to increase the temperature of the combustion mesh assembly 120, allowing the combustion mesh assembly 120 to radiate heat energy. The anti-backfire assembly 130 is used to prevent backfire.

[0067] Specifically, the gas receiving chamber 111 can store a certain amount of combustible gas. The opening of the gas receiving chamber 111 faces the combustion assembly, allowing the combustible gas to flow to the combustion mesh assembly 120. The combustible gas burns on the combustion mesh assembly 120, and the flame temperature is above 800°C. The flame heats the combustion mesh assembly 120, generating infrared heat radiation, which enables the combustion mesh assembly 120 to radiate heat energy.

[0068] Furthermore, to prevent the flame on the combustion mesh assembly 120 from entering the gas receiving chamber 111 when backfire occurs, the present application also provides an anti-backfire assembly 130 on the side of the combustion mesh assembly 120 facing the main body 110. When backfire occurs, the anti-backfire assembly 130 can block the flame to a certain extent, preventing the flame from entering the gas receiving chamber 111, thereby improving the safety of the burner 100.

[0069] Furthermore, the burner 100 is also provided with an ignition device, which is provided on the main body 110. The ignition device can ignite the combustible gas flowing to the combustion network assembly 120, so that the burner 100 can operate normally and generate heat energy.

[0070] By providing the combustion mesh assembly 120 and the anti-backfire assembly 130 in the burner 100, the combustible gas can be burned on the combustion mesh assembly 120 to increase the temperature of the combustion mesh assembly 120, allowing the combustion mesh assembly 120 to radiate heat energy. The anti-backfire assembly 130 prevents the flame from entering the gas receiving chamber 111, thereby improving the safety of the burner 100. Compared with existing products, the burner 100 proposed in this application has a simpler structure, is less difficult to manufacture, reduces production costs, and has higher safety and reliability.

[0071] In some embodiments, optionally, as shown in FIG. 1 , FIG. 2 and FIG. 3 , the burner 100 further includes: a support mesh assembly 140 installed between the combustion mesh assembly 120 and the anti-backfire assembly 130 , and the support mesh assembly 140 is used to support the combustion mesh assembly 120 .

[0072] In this embodiment, the structure of the burner 100 is defined. The burner 100 also includes a support mesh assembly 140, which is used to support the combustion mesh assembly 120. It is understandable that if the combustion mesh assembly 120 is deformed, it will cause the flame on the surface of the combustion mesh assembly 120 to be unstable, thereby affecting the heating effect. In order to prevent the combustion mesh assembly 120 from deforming, the present application provides a support mesh assembly 140 in the burner 100, which can support the combustion mesh assembly 120 to prevent the combustion mesh assembly 120 from deforming. The support mesh assembly 140 can be made of a material with high strength and high temperature resistance to improve the stability of the combustion mesh assembly 120.

[0073] By providing a support mesh assembly 140 for supporting the combustion mesh assembly 120 in the burner 100, deformation of the combustion mesh assembly 120 can be avoided, the stability of the combustion mesh assembly 120 can be improved, and the flame can be ensured to burn stably on the combustion mesh assembly 120.

[0074] In some embodiments, optionally, there is a distance between the flashback prevention assembly 130 and the support mesh assembly 140 , and there is a distance between the support mesh assembly 140 and the combustion mesh assembly 120 .

[0075] In this embodiment, the support mesh assembly 140, the combustion mesh assembly 120, and the anti-flashback assembly 130 are further defined. Specifically, a spacing is provided between the support mesh assembly 140 and the combustion mesh assembly 120, and a spacing is provided between the support mesh assembly 140 and the anti-flashback assembly 130. This is equivalent to providing an air insulation layer between the support mesh assembly 140, the combustion mesh assembly 120, and the anti-flashback assembly 130. Compared to a structure in which the support mesh assembly 140, the combustion mesh assembly 120, and the anti-flashback assembly 130 are arranged in close proximity, the present application reduces heat transfer between the support mesh assembly 140, the combustion mesh assembly 120, and the anti-flashback assembly 130 by providing spacing between the support mesh assembly 140 and the combustion mesh assembly 120, and between the support mesh assembly 140 and the anti-flashback assembly 130, thereby lowering the temperature of the anti-flashback assembly 130, reducing the possibility of flashback, and improving the safety of the burner 100.

[0076] In some embodiments, optionally, the combustion net assembly 120 includes at least one combustion net 121, the support net assembly 140 includes at least one support net 141, and the anti-backfire assembly 130 includes at least one backfire barrier net 131, and the combustion net 121, the support net 141 and the backfire barrier net are made of metal material.

[0077] In this embodiment, the combustion mesh assembly 120, the support mesh assembly 140, and the anti-backfire assembly 130 are further defined. Specifically, the combustion mesh assembly 120 includes at least one combustion mesh 121, the support mesh assembly 140 includes at least one support mesh 141, and the anti-backfire assembly 130 includes at least one backfire barrier mesh 131. The combustion mesh 121, the support mesh 141, and the backfire barrier mesh are made of metal. By using metal materials to make the combustion mesh 121, the support mesh 141, and the backfire barrier mesh 131, on the one hand, the strength of the combustion mesh 121, the support mesh 141, and the backfire barrier mesh 131 can be improved. Compared with a ceramic combustion plate, the combustion mesh 121, the support mesh 141, and the backfire barrier mesh 131 in the burner 100 proposed in this application are stronger. On the other hand, the metal mesh structure is easy to process and simple to assemble, thereby reducing the production difficulty.

[0078] In some embodiments, optionally, the mesh size of the combustion net 121 ranges from 40 mesh to 200 mesh.

[0079] In this embodiment, the mesh size range of the combustion net 121 is limited. Specifically, the mesh size range of the combustion net 121 is 40 mesh to 200 mesh. It is understandable that the combustion net 121 is used to burn combustible gas to generate flames, which requires the flame to burn stably and distributed on the combustion net 121. Therefore, the mesh size of the combustion net 121 cannot be too small, otherwise it will cause uneven flames. Therefore, the mesh size of the combustion net 121 is set within the range of 40 mesh to 200 mesh in this application to ensure that the flame on the combustion net 121 remains stable.

[0080] In some embodiments, optionally, the mesh size of the support net 141 ranges from 5 mesh to 40 mesh.

[0081] In this embodiment, the mesh size range of the support net 141 is limited. Specifically, the mesh size range of the support net 141 is 5 mesh to 40 mesh. Since the support net 141 is arranged between the combustion net 121 and the gas accommodating chamber 111, the combustible gas needs to pass through the support net 141 to reach the combustion net 121. Therefore, the support net 141 needs to be configured as a mesh structure with a large mesh size and a small mesh size. For this reason, the mesh size of the support net 141 is set in the range of 5 mesh to 40 mesh in this application to ensure that the combustible gas can smoothly pass through the support net 141.

[0082] In some embodiments, optionally, the mesh size of the tempering barrier net 131 ranges from 40 mesh to 200 mesh.

[0083] In this embodiment, the mesh size range of the tempering barrier net 131 is limited. Specifically, the mesh size range of the tempering barrier net 131 is 40 mesh to 200 mesh. The tempering barrier net 131 is used to prevent tempering, so it is necessary to set the tempering barrier net 131 to a mesh structure with a larger mesh size. Therefore, the present application sets the mesh size of the tempering barrier net 131 to be within the range of 40 mesh to 200 mesh to enhance the tempering barrier effect of the tempering barrier net 131.

[0084] In some embodiments, optionally, the combustion mesh 121 has a thickness ranging from 0.1 mm to 0.5 mm.

[0085] In this embodiment, the thickness of the combustion net 121 is limited, specifically, the thickness range of the combustion net 121 is 0.1mm to 0.5mm. This ensures that the strength of the combustion net 121 meets the requirements of use while avoiding the problem of increased product volume due to excessive thickness of the combustion net 121.

[0086] In some embodiments, optionally, the thickness of the support mesh 141 ranges from 0.2 mm to 2 mm.

[0087] In this embodiment, the thickness of the support mesh 141 is limited. Specifically, the thickness of the support mesh 141 ranges from 0.2 mm to 2 mm. As can be understood, the function of the support mesh 141 is to support the combustion mesh 121. Therefore, if the strength of the support mesh 141 is too low, the support effect of the support mesh 141 will be poor, which may cause the combustion mesh 121 to deform. Therefore, this application limits the thickness of the support mesh 141 to a range of 0.2 mm to 2 mm to ensure that the strength of the support mesh 141 meets the requirements of use. Furthermore, by ensuring that the support mesh 141 has a certain thickness, the support mesh 141 can also provide a certain thermal insulation effect.

[0088] In some embodiments, optionally, the tempering barrier mesh 131 has a thickness ranging from 0.1 mm to 0.5 mm.

[0089] In this embodiment, the thickness range of the tempering barrier mesh 131 is limited. Specifically, the thickness range of the tempering barrier mesh 131 is 0.1 mm to 0.5 mm. This ensures that the strength of the tempering barrier mesh 131 meets the required requirements while avoiding the problem of increased product volume caused by excessive tempering barrier mesh 131 thickness.

[0090] In some embodiments, optionally, as shown in Figures 1, 2 and 3, the main body 110 includes: a shell 112; a guide plate 113, which is connected to the shell 112, and the shell 112 and the guide plate 113 together form a gas accommodating chamber 111, and the guide plate 113 has a plurality of guide holes 114, and the guide holes 114 are used to discharge the combustible gas in the gas accommodating chamber 111 to the combustion network assembly 120.

[0091] In this embodiment, the structure of the main body 110 is defined. The main body 110 includes a shell 112 and a guide plate 113. The guide plate 113 is connected to the shell 112 and together they form a gas accommodating chamber 111, which can accommodate a certain amount of combustible gas. Furthermore, the guide plate 113 has a plurality of guide holes 114, through which the combustible gas in the gas accommodating chamber 111 can flow toward the combustion grid assembly 120, allowing the combustible gas to burn on the combustion grid assembly 120, thereby increasing the temperature of the combustion grid assembly 120 and enabling the combustion grid assembly 120 to radiate heat energy. The guide holes 114 can guide the combustible gas. Since the combustible gas flows to the combustion network assembly 120 through the guide holes 114, the positions of multiple guide holes 114 can be rationally designed to enable the combustible gas to flow to the combustion network assembly 120 more evenly, thereby avoiding uneven flame distribution at various positions on the combustion network assembly 120 and maintaining uniform temperature at various positions of the combustion network assembly 120.

[0092] In some embodiments, optionally, as shown in FIG. 2 , a plurality of guide holes 114 are evenly distributed on the guide plate 113 .

[0093] In this embodiment, the locations of the plurality of guide holes 114 are limited. Specifically, the plurality of guide holes 114 are evenly distributed on the guide plate 113. Since the combustible gas flows toward the combustion mesh assembly 120 through the guide holes 114, by evenly distributing the plurality of guide holes 114 on the guide plate 113, the combustible gas can flow more evenly toward the combustion mesh assembly 120, thereby avoiding uneven flame distribution at various locations on the combustion mesh assembly 120 and maintaining a uniform temperature at various locations on the combustion mesh assembly 120.

[0094] In some embodiments, optionally, as shown in FIG. 1 and FIG. 2 , the burner 100 further includes: a gas pipe 150 connected to the shell 112 and communicating with the gas accommodating chamber 111 , and the gas pipe 150 is used to input combustible gas into the gas accommodating chamber 111 .

[0095] In this embodiment, the structure of the burner 100 is further defined. The burner 100 also includes a gas pipe 150, which is used to input combustible gas into the gas holding chamber 111. Specifically, the gas pipe 150 is connected to the housing 112 and communicates with the gas holding chamber 111, and the combustible gas flows into the gas holding chamber 111 through the gas pipe 150. The gas pipe 150 extends into the gas holding chamber 111 to discharge the combustible gas from the central area of ​​the gas holding chamber 111 into the gas holding chamber 111, thereby achieving a more balanced combustible gas concentration throughout the gas holding chamber 111. This allows the combustible gas to flow more evenly to the combustion grid assembly 120, thereby improving the uniformity of the flame on the combustion grid assembly 120.

[0096] In one possible embodiment, the burner 100 primarily comprises a combustion surface (i.e., the combustion mesh assembly 120 and the support mesh assembly 140), an airflow distribution plate (i.e., the guide plate 113), a cavity (i.e., the gas receiving chamber 111), and an ejector tube (i.e., the gas pipe 150). The combustion surface primarily comprises the flame combustion mesh (i.e., the combustion mesh assembly 120) and the thermal insulation support mesh (i.e., the support mesh assembly 140). The burner 100 also includes a flashback barrier mesh 131.

[0097] As shown in Figure 5, a mixture of gas and air (i.e., combustible gas) enters the cavity through the ejector tube. After being completely mixed in the cavity, it enters the combustion surface evenly through the air flow distribution plate. The flow direction of the combustible gas is shown by the arrow in Figure 5. The flame burns on the flame combustion net on the combustion surface, forming hot air outflow. The flow direction of the hot air is shown in Figure 5, and it radiates heat energy. The heat insulation support net is used to support the flame combustion net and play a partial heat blocking role. The backfire barrier net 131 plays a role in preventing the flame from entering the cavity when it backfires. The temperature of the flame after combustion is above 800°C, which is used to heat the flame combustion net and form heat radiation.

[0098] The flame combustion net is on the outside of the heat insulation support net, and the tempering barrier net 131 is on the inside of the heat insulation support net. The heat insulation support net is between the tempering barrier net 131 and the flame combustion net. After the gas flow passes through the tempering barrier net 131 and the heat insulation support net, it burns on the flame combustion net.

[0099] The flame combustion mesh is a mesh structure made of high-temperature corrosion-resistant metal, with a mesh size between 40 and 200 mesh and a thickness between 0.1 mm and 0.5 mm. The thermal insulation support mesh is also a mesh structure made of high-temperature corrosion-resistant metal, with a mesh size between 5 and 40 mesh and a thickness between 0.2 mm and 2 mm. The tempering barrier mesh 131 is also a mesh structure made of high-temperature corrosion-resistant metal, with a mesh size between 40 and 200 mesh and a thickness between 0.1 mm and 0.5 mm.

[0100] The mesh size of the heat-insulating support net is larger than that of the flame combustion net. There is a certain distance between the heat-insulating support net and the flame combustion net, which can be 0mm to 2mm. There is also a certain distance between the tempering barrier net 131 and the heat-insulating support net, which can be 0mm to 2mm.

[0101] The burner 100 according to an embodiment of the present application will be described below with reference to FIG. 6 to FIG. 17 .

[0102] 6 , 7 and 8 , the burner 100 according to an embodiment of the present application includes: a main body 110 and a combustion mesh assembly 120. The main body 110 is provided with a gas accommodating chamber 111. The main body 110 is provided with a gas outlet connected to the gas accommodating chamber 111. The combustion mesh assembly 120 is provided on the main body 110 and the opening of the gas outlet faces the combustion mesh assembly 120. The combustion mesh assembly 120 is provided with a plurality of combustion mesh holes. The combustion mesh assembly 120 is configured so that the equivalent diameter of the combustion mesh hole is ≤0.8 mm.

[0103] The gas holding chamber 111 is used to hold combustible gas. The gas in the gas holding chamber 111 can flow to the combustion mesh assembly 120 through the gas outlet, and then the gas flows through the multiple combustion mesh holes on the combustion mesh assembly 120 to the side of the combustion mesh assembly 120 away from the gas holding chamber 111, so that the gas can burn on the side of the combustion mesh assembly 120 away from the gas holding chamber 111. The flame formed by the combustion heats the combustion mesh assembly 120. The combustion mesh assembly 120 can be heated to above 800°C. The heated combustion mesh assembly 120 can form infrared heat radiation to heat external objects.

[0104] It should be noted that because flames propagate along the gas flow path, if the flame propagates to the gas chamber 111, it may burn within the chamber 111, causing flashback. This flashback phenomenon, where the flame propagates directly to the gas chamber 111, is called dynamic flashback. To prevent dynamic flashback, in the embodiment of the present application, the equivalent diameter of the combustion mesh is ≤0.8 mm.

[0105] It should be noted that the combustion mesh can be a circular hole, or a diamond-shaped, hexagonal or other non-circular hole. When the combustion mesh is a non-circular hole, the combustion mesh can be equivalent to a circular hole with the same opening area. Therefore, the opening size of the combustion mesh can be limited by the equivalent diameter of the combustion mesh.

[0106] The calculation formula for the quenching diameter dm is:

[0107] Among them, p e is the Peclet number, which is a key parameter for determining combustion stability, and Pe=65; λ g is the thermal conductivity of the combustion mesh wall; S L is the burning rate; c p is the isobaric specific heat capacity; ρ g is the gas density.

[0108] Among them, the thermal conductivity coefficient λ of the combustion mesh wall is g The burning speed S is determined by the material of the burning mesh component. L Determined by the type of gas and its premix ratio with air; isobaric specific heat capacity c pAffected by temperature; gas density ρ g Affected by the equivalence ratio, refer to Figure 10, which is a schematic diagram of the calculation results of the quenching diameter at different temperatures and equivalence ratios. The calculation selects dm≤0.8mm, that is, the equivalent diameter of the above-mentioned combustion mesh is ≤0.8mm.

[0109] In the embodiment of the present application, by limiting the equivalent diameter of the combustion mesh, the risk of the flame passing through the combustion mesh can be effectively avoided. This is because when the flame propagation path needs to pass through a small hole or channel, the flame will be quenched, that is, the combustion mesh with a smaller equivalent diameter can prevent the flame from propagating to the gas holding chamber 111. In other words, the flame cannot pass through the combustion mesh and can only burn on the side of the combustion mesh assembly 120 that is away from the gas holding chamber 111. Referring to Figures 9 and 11, in the embodiment of the present application, the equivalent diameter of the combustion mesh is ≤0.8mm, and the flame cannot pass through the combustion mesh, thereby avoiding the situation where the flame propagates to the gas holding chamber 111. And when the flow velocity of the gas is less than or equal to the propagation rate of the flame, the flame can be stably burned at the orifice of the combustion mesh that is away from the gas holding chamber 111, effectively improving the reliability of the use of the burner 100.

[0110] 8 , 15 and 16 , in an embodiment of the present application, the burner 100 further includes an anti-backfire assembly 130 . In the thickness direction of the combustion mesh assembly 120 , the anti-backfire assembly 130 is arranged side by side with the combustion mesh assembly 120 . The anti-backfire assembly 130 is constructed to have heat insulation properties and is located between the combustion mesh assembly 120 and the main body 110 .

[0111] Because the burning flame will heat the combustion mesh assembly 120, the heat of the combustion mesh assembly 120 can be transmitted toward the main body 110, causing the temperature of the main body 110 to gradually rise. If the temperature in the gas holding chamber 111 rises to the auto-ignition point of the gas, the gas in the gas holding chamber 111 will be ignited, causing a backfire phenomenon, which is called static backfire.

[0112] In the embodiment of the present application, an anti-backfire assembly 130 is provided between the combustion mesh assembly 120 and the main body 110, and the anti-backfire assembly 130 has heat insulation properties, so that the anti-backfire assembly 130 can block the heat transferred from the combustion mesh assembly 120 toward the main body 110, thereby reducing the temperature in the gas containing chamber 111 and effectively reducing the risk of static backfire.

[0113] In the above embodiment, the anti-backfire assembly 130 is constructed to have heat insulation properties and is located between the combustion mesh assembly 120 and the main body 110. In other embodiments, the anti-backfire assembly 130 can also be configured to exchange heat with the combustion mesh assembly 120 to dissipate heat from the combustion mesh assembly 120. Specifically, the anti-backfire assembly 130 is arranged on the side of the combustion mesh assembly 120 that is away from the gas containing chamber 111. When the burner 100 is working, the flame heats the combustion mesh assembly 120, and the anti-backfire assembly 130 exchanges heat with the combustion mesh assembly 120 to improve the heat dissipation efficiency of the combustion mesh assembly 120, thereby reducing the temperature of the side of the combustion mesh assembly 120 facing the gas containing chamber 111, thereby reducing the risk of static backfire.

[0114] In some other embodiments, two anti-backfire assemblies 130 can be provided, wherein one anti-backfire assembly 130 is constructed to have heat insulation properties and is located between the combustion mesh assembly 120 and the main body 110, and the other anti-backfire assembly 130 is provided on the side of the combustion mesh assembly 120 facing away from the gas containing chamber 111 for dissipating heat from the combustion mesh assembly 120.

[0115] The two anti-backfire components 130 in the embodiment of the present application, one of which is used to block heat from being transferred toward the gas containing chamber 111, and the other is used to improve the heat dissipation efficiency of the combustion mesh component 120, effectively reducing the temperature in the gas containing chamber 111 and effectively reducing the risk of static backfire.

[0116] According to the burner 100 of the embodiment of the present application, the equivalent diameter of the combustion mesh is ≤0.8mm. By limiting the equivalent diameter of the combustion mesh, the flame can be prevented from propagating through the combustion mesh to the gas containing chamber 111, thereby avoiding the occurrence of dynamic backfire. The flame cannot pass through the combustion mesh and can only burn on the side of the combustion mesh assembly 120 away from the gas containing chamber 111, thereby improving the reliability of the use of the burner 100; the burner 100 is provided with an anti-backfire assembly 130, which is used to block heat from being transferred toward the gas containing chamber 111 and / or to improve the heat dissipation efficiency of the combustion mesh assembly 120, thereby effectively reducing the risk of static backfire and further improving the reliability of the use of the burner 100.

[0117] In some specific embodiments, the combustion mesh assembly 120 includes at least one combustion mesh 121, the combustion mesh 121 being formed with the above-mentioned combustion mesh holes, and the combustion mesh 121 being made of metal. In the embodiment of the present application, the combustion mesh assembly 120 has a simple structure, which reduces the cost of the burner 100.

[0118] In some further embodiments, 0.05 mm ≤ the equivalent diameter of the combustion mesh ≤ 0.8 mm.

[0119] If the equivalent diameter of the combustion mesh is greater than 0.8 mm, the flame may pass through the combustion mesh during propagation, resulting in dynamic flashback. If the equivalent diameter of the combustion mesh is less than 0.05 mm, the resistance of the gas passing through the combustion mesh assembly 120 will be increased, affecting the combustion efficiency and thus the heating effect of the burner 100. In the embodiment of the present application, the equivalent diameter of the combustion mesh is limited to 0.05 mm to 0.8 mm, so that the gas can pass through the combustion mesh assembly 120 smoothly and burn on the side of the combustion mesh assembly 120 away from the gas receiving chamber 111. This ensures the heating effect of the burner 100 while avoiding the possibility of the flame passing through the combustion mesh and the risk of dynamic flashback.

[0120] In some specific embodiments, the equivalent diameter of the combustion mesh can be any one of 0.05 mm, 0.25 mm, 0.35 mm, 0.55 mm, 0.65 mm, 0.75 mm, 0.8 mm, or a range of values ​​between any two of them.

[0121] In some preferred embodiments, the equivalent diameter of the combustion mesh is 0.05 mm ≤ 0.3 mm.

[0122] As shown in Figure 12, in embodiments where the equivalent diameter of the combustion mesh is ≤0.8mm, the flame can stably burn within the combustion mesh assembly without flashback. Furthermore, Figure 12 shows that in embodiments where the equivalent diameter of the combustion mesh is ≤0.3mm, the flame can not only stably burn within the combustion mesh, but the entire combustion mesh is heated more evenly, and the heat radiation generated by the combustion mesh is also more uniform, effectively improving the heating effect of the burner.

[0123] In some embodiments, the combustion mesh assembly 120 has a porosity of ≥ 40%.

[0124] It should be noted that the surface porosity of the combustion mesh assembly 120 refers to the area ratio of the combustion mesh per unit area. Because the multiple combustion meshes on the combustion mesh assembly 120 are unevenly distributed, this application limits the surface porosity of the combustion mesh assembly 120 to ensure a more uniform distribution of the gas on the combustion mesh assembly 120, reduce the temperature difference between different positions of the combustion mesh assembly 120, and improve the heating effect of the burner 100.

[0125] In some further embodiments, the combustion mesh assembly 120 has a thickness ranging from 0.1 mm to 0.5 mm.

[0126] If the thickness of the combustion mesh assembly 120 is less than 0.1 mm, the strength of the combustion mesh assembly 120 will be affected, and the combustion mesh assembly 120 will be more easily deformed. If the thickness of the combustion mesh assembly 120 is greater than 0.5 mm, the overall thickness of the burner 100 will be increased, which is not conducive to the miniaturization of the burner 100 and will also increase the cost of the burner 100. In the embodiment of the present application, the thickness of the combustion mesh assembly 120 ranges from 0.1 mm to 0.5 mm, which ensures the strength of the combustion mesh assembly 120 without making the overall thickness of the burner 100 too thick, thereby reducing the cost of the burner 100.

[0127] In some specific embodiments, the combustion mesh assembly 120 has a thickness of any one of 0.1 mm, 0.25 mm, 0.38 mm, and 0.5 mm, or a range of any two thereof.

[0128] In some embodiments, the anti-flashback assembly 130 has thermal insulation properties and is located between the combustion mesh assembly 120 and the main body 110 , and the anti-flashback assembly 130 is in point contact with the combustion mesh assembly 120 .

[0129] In the embodiment of the present application, the anti-backfire assembly 130 is in point contact with the combustion mesh assembly 120, and the contact thermal resistance is large. The efficiency of transferring heat from the combustion mesh assembly 120 to the anti-backfire assembly 130 is reduced, and the heat from the combustion mesh assembly 120 is difficult to continue to be transferred to the gas in the gas holding chamber 111 through the anti-backfire assembly 130, thereby preventing the temperature in the gas holding chamber 111 from rising to the natural point temperature of the gas.

[0130] It should be noted that the point contact between the anti-backfire component 130 and the combustion mesh component 120 means that the contact part between the anti-backfire component 130 and the combustion mesh component 120 is point contact. There can be multiple contact points between the anti-backfire component 130 and the combustion mesh component 120, which ensures the reliability of the connection between the anti-backfire component 130 and the combustion mesh component 120.

[0131] In some specific embodiments, the anti-flashback assembly 130 includes a flashback barrier net 131 , which is a metal piece. The flashback barrier net 131 is located between the combustion net assembly 120 and the main body 110 , and the flashback barrier net 131 is in point contact with the combustion net assembly 120 .

[0132] In the embodiment of the present application, the anti-backfire assembly 130 has a simple structure and is easy to install, which reduces the cost of the burner 100. In addition, the backfire barrier net 131 is constructed as a metal mesh structure, so that the anti-backfire assembly 130 can also support the combustion net assembly 120. It is understandable that if the combustion net assembly 120 is deformed due to excessive temperature, it will cause the flame on the surface of the combustion net assembly 120 to be unstable, thereby affecting the heating effect. In order to prevent the combustion net assembly 120 from deforming, the embodiment of the present application can support the combustion net assembly 120 through the anti-backfire assembly 130 to prevent the combustion net assembly 120 from deforming. The anti-backfire assembly 130 can be made of a material with high strength and high temperature resistance to improve the stability of the combustion net assembly 120.

[0133] In some further embodiments, the anti-backfire assembly 130 is located between the combustion mesh assembly 120 and the main body 110. The anti-backfire assembly 130 includes a backfire barrier mesh 131. The backfire barrier mesh 131 is a metal part. The backfire barrier mesh 131 includes multiple backfire prevention mesh holes. The backfire barrier mesh 131 is constructed to meet the following requirements: 0.8 mm < equivalent diameter of each backfire prevention mesh hole ≤ 3 mm.

[0134] When the burner 100 is working, the gas in the gas holding chamber 111 flows toward the combustion mesh assembly 120, and passes through the anti-backfire mesh and the combustion mesh in turn to the side of the combustion mesh assembly 120 away from the gas holding chamber 111, and burns on the side of the combustion mesh assembly 120 away from the gas holding chamber 111. The flame formed by the combustion heats the combustion mesh assembly 120, and the heated combustion mesh assembly 120 can form infrared heat radiation to heat external objects.

[0135] If the equivalent diameter of the anti-backfire mesh is less than 0.8 mm, the resistance of the gas passing through the anti-backfire assembly 130 will increase, affecting the combustion efficiency; if the equivalent diameter of the anti-backfire mesh is greater than 3 mm, the number of contact points between the anti-backfire assembly 130 and the combustion mesh assembly 120 will be reduced, affecting the supporting effect of the anti-backfire assembly 130 on the combustion mesh assembly 120. In the embodiment of the present application, 0.8 mm < the equivalent diameter of each anti-backfire mesh ≤ 3 mm reduces the resistance of the gas passing through the anti-backfire assembly 130, allowing the combustible gas to flow smoothly to the combustion mesh assembly 120, allowing the burner 100 to operate normally, while also ensuring the supporting effect of the anti-backfire assembly 130 on the combustion mesh assembly 120 and reducing the risk of deformation of the combustion mesh assembly 120.

[0136] It should be noted that the anti-tempering mesh can be a circular hole, or a diamond-shaped, hexagonal or other non-circular hole. When the anti-tempering mesh is a non-circular hole, the anti-tempering mesh can be equivalent to a circular hole with the same opening area. Therefore, the opening size of the anti-tempering mesh can be limited by the equivalent diameter of the anti-tempering mesh.

[0137] In some specific embodiments, the equivalent diameter of the flashback prevention mesh is any one of 0.9 mm, 1.2 mm, 1.6 mm, 1.9 mm, 2.2 mm, 2.7 mm, and 3 mm, or a range of values ​​between any two of them.

[0138] In some embodiments, the anti-flashback assembly 130 includes a plurality of anti-flashback meshes, and the ratio of the equivalent diameter of the anti-flashback meshes to the equivalent diameter of the combustion meshes ranges from 1 to 60.

[0139] If the ratio of the equivalent diameter of the anti-backfire mesh to the equivalent diameter of the combustion mesh is less than 1, it means that the opening area of ​​the anti-backfire mesh is smaller than the opening area of ​​the combustion mesh, which increases the resistance of the gas passing through the anti-backfire assembly 130 and affects the combustion efficiency; if the ratio of the equivalent diameter of the anti-backfire mesh to the equivalent diameter of the combustion mesh is greater than 60, it will cause the opening area of ​​the anti-backfire mesh to be too large, reducing the number of contact points between the anti-backfire assembly 130 and the combustion mesh assembly 120, affecting the support effect of the anti-backfire assembly 130 on the combustion mesh assembly 120. In the embodiment of the present application, the ratio of the equivalent diameter of the anti-backfire mesh to the equivalent diameter of the combustion mesh is in the range of 1 to 60, which reduces the resistance of the gas passing through the anti-backfire assembly 130, allows the combustible gas to flow smoothly to the combustion mesh assembly 120, and enables the burner 100 to operate normally. At the same time, it also ensures the support effect of the anti-backfire assembly 130 on the combustion mesh assembly 120 and reduces the risk of deformation of the combustion mesh assembly 120.

[0140] In some specific embodiments, the ratio of the equivalent diameter of the anti-flashback mesh to the equivalent diameter of the combustion mesh is any one of 1.1, 2, 8, 19, 22, 47, and 60, or a range of values ​​therebetween.

[0141] In some embodiments, the tempering barrier mesh 131 has a porosity of ≥40%.

[0142] It should be noted that the porosity of the flashback barrier mesh 131 refers to the area ratio of the anti-flashback mesh holes per unit area. Because the multiple anti-flashback mesh holes on the flashback barrier mesh 131 are unevenly distributed, this application limits the porosity of the flashback barrier mesh 131 to prevent the flashback barrier mesh 131 from affecting the uniformity of gas distribution. This ensures a more even distribution of gas on the combustion mesh assembly 120, reduces temperature differences between different locations on the combustion mesh assembly 120, and improves the heating effect of the burner 100.

[0143] In some embodiments, the tempering barrier mesh 131 has a thickness of 0.15 mm to 2 mm.

[0144] If the thickness of the tempering barrier net 131 is less than 0.15 mm, the strength of the tempering barrier net 131 will be affected, and the tempering barrier net 131 will be easily deformed. If the thickness of the tempering barrier net 131 is greater than 2 mm, the overall thickness of the burner 100 will be increased, which is not conducive to the miniaturization of the burner 100 and will also increase the cost of the burner 100. In the embodiment of the present application, the thickness of the tempering barrier net 131 is 0.15 mm to 2 mm, which ensures the strength of the tempering barrier net 131 without making the overall thickness of the burner 100 too thick, thereby reducing the cost of the burner 100.

[0145] In some specific embodiments, the tempering barrier mesh 131 has a thickness of any one of 0.15 mm, 0.35 mm, 0.8 mm, 1.1 mm, 1.5 mm, and 2 mm, or a range of any two thereof.

[0146] In some embodiments, the burner 100 includes: a main body 110, including a gas accommodating chamber 111, the gas accommodating chamber 111 is used to accommodate combustible gas; a combustion mesh assembly 120, the opening of the gas accommodating chamber 111 is facing the combustion mesh assembly 120, so that the combustible gas can burn on the surface of the combustion mesh assembly 120, and the combustion mesh assembly 120 is set to face the outside to radiate heat energy to the outside; an anti-backfire assembly 130, installed between the combustion mesh assembly 120 and the main body 110, the anti-backfire assembly 130 is used to block heat from being transferred toward the gas accommodating chamber 111, the anti-backfire assembly 130 is also used to support the combustion mesh assembly 120, the anti-backfire assembly 130 includes a backfire barrier net 131, and the mesh size of the backfire barrier net 131 is larger than the mesh size of the combustion mesh assembly 120.

[0147] The burner 100 proposed in this application can be used in a cooking appliance. When in operation, the burner 100 can heat the interior of the cooking appliance to heat and cook food. The burner 100 includes a main body 110, a combustion mesh assembly 120, and a flashback prevention assembly 130. The main body 110 includes a gas receiving chamber 111 for receiving combustible gas, the combustion mesh assembly 120 for burning the combustible gas, and the flashback prevention assembly 130 for supporting the combustion mesh assembly 120.

[0148] Specifically, the gas receiving chamber 111 can store a certain amount of combustible gas. The opening of the gas receiving chamber 111 faces the combustion mesh assembly 120, allowing the combustible gas to flow toward the combustion mesh assembly 120. The combustible gas burns on the combustion mesh assembly 120, and the flame temperature is above 800°C. The flame heats the combustion mesh assembly 120, generating infrared heat radiation, which enables the combustion mesh assembly 120 to radiate heat energy.

[0149] Furthermore, the present application also provides an anti-backfire assembly 130 in the burner 100. The anti-backfire assembly 130 is used to support the combustion mesh assembly 120. It is understandable that if the combustion mesh assembly 120 is deformed, the flame on the surface of the combustion mesh assembly 120 will become unstable, thereby affecting the heating effect. In order to prevent the combustion mesh assembly 120 from deforming, the present application provides an anti-backfire assembly 130 in the burner 100. The anti-backfire assembly 130 can support the combustion mesh assembly 120 to prevent the combustion mesh assembly 120 from deforming. The anti-backfire assembly 130 can be made of a high-strength and high-temperature resistant material to improve the stability of the combustion mesh assembly 120.

[0150] Furthermore, since the anti-backfire assembly 130 is located between the main body 110 and the combustion mesh assembly 120, the combustible gas needs to pass through the anti-backfire assembly 130 to flow toward the combustion mesh assembly 120. To allow the combustible gas to flow smoothly through the anti-backfire assembly 130, the present application sets the mesh size of the anti-backfire assembly 130 to be larger than the mesh size of the combustion mesh assembly 120. In this way, the resistance of the anti-backfire assembly 130 to the combustible gas can be reduced, allowing the combustible gas to flow smoothly toward the combustion mesh assembly 120, and allowing the burner 100 to operate normally.

[0151] By providing the burner 100 with an anti-flashback assembly 130 for supporting the combustion mesh assembly 120, deformation of the combustion mesh assembly 120 can be avoided, the stability of the combustion mesh assembly 120 can be improved, and the flame can be stably burned on the combustion mesh assembly 120. By setting the mesh size of the anti-flashback assembly 130 to be larger than the mesh size of the combustion mesh assembly 120, the resistance of the anti-flashback assembly 130 to the combustible gas can be reduced, allowing the combustible gas to flow smoothly to the combustion mesh assembly 120, so that the burner 100 can operate normally.

[0152] In some embodiments, optionally, as shown in FIG. 6 , FIG. 7 and FIG. 8 , the mesh number of the anti-backfire component 130 is smaller than the mesh number of the combustion mesh component 120 .

[0153] In this embodiment, the combustion mesh assembly 120 and the anti-flashback assembly 130 are further defined. Specifically, the mesh size of the anti-flashback assembly 130 is smaller than that of the combustion mesh assembly 120. By setting the mesh size of the anti-flashback assembly 130 smaller than that of the combustion mesh assembly 120, the mesh size of the anti-flashback assembly 130 can be increased, thereby reducing the resistance of the anti-flashback assembly 130 to the combustible gas, allowing the combustible gas to flow smoothly to the combustion mesh assembly 120, and enabling the burner 100 to operate normally.

[0154] In some embodiments, optionally, the mesh number of the combustion mesh component 120 ranges from 40 mesh to 200 mesh, and the mesh number of the anti-backfire component 130 ranges from 5 mesh to 40 mesh.

[0155] In this embodiment, the mesh number of the combustion mesh assembly 120 and the mesh number range of the anti-backfire assembly 130 are limited. Specifically, the mesh number of the combustion mesh assembly 120 ranges from 40 mesh to 200 mesh. It is understandable that the combustion mesh assembly 120 is used to burn combustible gas to generate a flame, which requires the flame to burn stably and distributed on the combustion mesh assembly 120. Therefore, the mesh number of the combustion mesh assembly 120 cannot be too small, otherwise it will cause uneven flames. Therefore, the mesh number of the combustion mesh assembly 120 is set within the range of 40 mesh to 200 mesh in this application to ensure that the flame on the combustion mesh assembly 120 remains stable.

[0156] Furthermore, the mesh size of the anti-backfire assembly 130 ranges from 5 mesh to 40 mesh. Since the anti-backfire assembly 130 is disposed between the combustion mesh assembly 120 and the gas accommodating chamber 111, the combustible gas needs to pass through the anti-backfire assembly 130 before reaching the combustion mesh assembly 120. Therefore, the anti-backfire assembly 130 needs to be configured as a mesh structure with a large mesh size and a small mesh size. For this reason, the present application sets the mesh size of the anti-backfire assembly 130 within the range of 5 mesh to 40 mesh to ensure that the combustible gas can smoothly pass through the anti-backfire assembly 130.

[0157] In some embodiments, the combustion mesh assembly 120 optionally has a thickness ranging from 0.1 mm to 0.5 mm.

[0158] In this embodiment, the thickness of the combustion mesh assembly 120 is limited. Specifically, the thickness of the combustion mesh assembly 120 ranges from 0.1 mm to 0.5 mm. This ensures that the strength of the combustion mesh assembly 120 meets the required requirements while avoiding the problem of increased product volume caused by excessive thickness of the combustion mesh assembly 120.

[0159] In some embodiments, optionally, the tempering prevention component 130 has a thickness ranging from 0.15 mm to 2 mm.

[0160] In this embodiment, the thickness of the anti-backfire assembly 130 is limited. Specifically, the thickness range of the anti-backfire assembly 130 is 0.15 mm to 2 mm. As can be understood, the anti-backfire assembly 130 supports the combustion mesh assembly 120. Therefore, if the strength of the anti-backfire assembly 130 is too low, it will not provide sufficient support, which may lead to deformation of the combustion mesh assembly 120. Therefore, this application limits the thickness of the anti-backfire assembly 130 to a range of 0.15 mm to 2 mm to ensure that the strength of the anti-backfire assembly 130 meets the requirements of use. Furthermore, by ensuring that the anti-backfire assembly 130 has a certain thickness, it can also provide a certain thermal insulation effect.

[0161] In some embodiments, the combustion mesh assembly 120 and the anti-flashback assembly 130 are optionally made of metal.

[0162] In this embodiment, the combustion mesh assembly 120 and the anti-flashback assembly 130 are further defined. Specifically, the combustion mesh assembly 120 and the anti-flashback assembly 130 are made of metal. Using metal to manufacture the combustion mesh assembly 120 and the anti-flashback assembly 130 improves their strength. Compared to a ceramic combustion plate, the combustion mesh assembly 120 and the anti-flashback assembly 130 in the burner 100 proposed in this application are stronger. Furthermore, the metal mesh structure is easy to process and simplifies assembly, thereby reducing production complexity.

[0163] In some embodiments, optionally, there is a distance between the anti-flashback assembly 130 and the combustion mesh assembly 120 .

[0164] In this embodiment, the anti-flashback assembly 130 and the combustion mesh assembly 120 are further defined. Specifically, a distance is provided between the anti-flashback assembly 130 and the combustion mesh assembly 120. This is equivalent to providing an air insulation layer between the anti-flashback assembly 130 and the combustion mesh assembly 120. Compared to a structure where the anti-flashback assembly 130 and the combustion mesh assembly 120 are placed in close proximity, the present application reduces heat transfer between the anti-flashback assembly 130 and the combustion mesh assembly 120 by providing a distance therebetween. This reduces the temperature of the anti-flashback assembly 130, reduces the possibility of flashback, and improves the safety of the burner 100.

[0165] In some embodiments, the flashback prevention assembly 130 is a piece of heat-insulating material filled between the combustion mesh assembly 120 and the main body 110 .

[0166] In the above technical solution, the excellent thermal insulation properties of the thermal insulation material can effectively prevent heat from being transferred toward the gas receiving chamber 111, further reducing the risk of static backfire and further improving the reliability of the burner 100.

[0167] In some specific embodiments, the backfire prevention component 130 may be thermal insulation wool or quartz wool.

[0168] The thermal insulation wool and quartz wool are provided with gaps for gas to penetrate, which will not affect the flow of gas, ensuring that the gas can flow smoothly to the combustion network assembly 120 for combustion. In addition, the thermal insulation wool and quartz wool have excellent fireproof and heat-insulating properties, which can effectively block the heat from being transferred toward the gas accommodating cavity 111, ensuring that the reliability of the use of the burner 100 is improved.

[0169] In some embodiments, the anti-backfire assembly 130 is arranged on the side of the combustion mesh assembly 120 away from the gas containing chamber 111. The anti-backfire assembly 130 exchanges heat with the combustion mesh assembly 120 to dissipate heat from the combustion mesh assembly 120. The anti-backfire assembly 130 is a metal part and is formed into a mesh structure.

[0170] In the embodiment of the present application, the anti-backfire component 130 is a metal part, which is beneficial to improving the heat dissipation efficiency of the anti-backfire component 130, thereby improving the heat dissipation efficiency of the combustion mesh component 120 and reducing the risk of static backfire. In addition, the anti-backfire component 130 can also support the combustion mesh component 120 to avoid deformation of the combustion mesh component 120.

[0171] Referring to Figure 13 , in some embodiments, a flashback prevention assembly 130 is disposed on a side of the combustion mesh assembly 120 facing away from the gas receiving chamber 111. The flashback prevention assembly 130 and the combustion mesh assembly 120 exchange heat to dissipate heat from the combustion mesh assembly 120. The flashback prevention assembly 130 is a wavy mesh. A wavy mesh is a solid mesh commonly used in the art that is formed into a wavy shape and is made of a plastic material, such as a metal material.

[0172] Through the above technical solution, the wavy anti-backfire component 130 increases the contact area between the anti-backfire component 130 and the air, increases the heat dissipation efficiency of the anti-backfire component 130, thereby increasing the heat dissipation effect of the combustion network component 120, and further reduces the risk of static backfire.

[0173] 14 , in some embodiments, the flashback prevention assembly 130 is configured to have thermal insulation and is located between the combustion mesh assembly 120 and the main body 110 , where the combustion mesh assembly 120 is a wave mesh.

[0174] In the embodiment of the present application, an anti-backfire assembly 130 is provided between the combustion mesh assembly 120 and the main body 110, and the anti-backfire assembly 130 has heat insulation properties, so that the anti-backfire assembly 130 can block the heat transferred from the combustion mesh assembly 120 to the main body 110, thereby reducing the temperature in the gas containing cavity 111 and effectively reducing the risk of static backfire; the wavy combustion mesh assembly 120 increases the contact area between the combustion mesh assembly 120 and the air, increases the heat dissipation effect of the combustion mesh assembly 120, and further reduces the risk of static backfire.

[0175] In some embodiments, a plurality of anti-backfire assemblies 130 are provided, and fire prevention components are distributed on both sides of the combustion mesh assembly 120 .

[0176] In an embodiment of the present application, the anti-backfire assembly 130 located between the combustion mesh assembly 120 and the main body 110 is used to block heat from being transferred toward the gas containing chamber 111. The anti-backfire assembly 130 located on the side of the combustion mesh assembly 120 facing away from the gas containing chamber 111 is used to improve the heat dissipation efficiency of the combustion mesh assembly 120, effectively reducing the temperature in the gas containing chamber 111, and effectively reducing the risk of static backfire.

[0177] In other embodiments, multiple anti-backfire assemblies 130 are provided, and the multiple anti-backfire assemblies 130 are all arranged between the combustion net assembly 120 and the main body 110. Through the insulation of the multiple anti-backfire assemblies 130, the temperature in the gas containing chamber 111 is further reduced, effectively reducing the risk of static backfire.

[0178] In some other embodiments, multiple anti-backfire assemblies 130 are provided, and the multiple anti-backfire assemblies 130 are all arranged on the side of the combustion net assembly 120 away from the gas containing chamber 111. The multiple anti-backfire assemblies 130 are used to increase the heat dissipation area, improve the heat dissipation efficiency of the combustion net assembly 120, and effectively reduce the risk of static backfire.

[0179] In some specific embodiments, the burner 100 includes a combustion mesh assembly 120 and two anti-flashback assemblies 130. One of the two anti-flashback assemblies 130 is located on the side of the combustion mesh assembly 120 facing the gas receiving chamber 111, and the other of the two anti-flashback assemblies 130 is located on the side of the combustion mesh assembly 120 facing away from the gas receiving chamber 111. In this embodiment of the present application, the burner 100 has a simple structure and effectively reduces the risk of flashback.

[0180] In other specific embodiments, the burner 100 includes two combustion mesh assemblies 120 and an anti-flashback assembly 130. The two combustion mesh assemblies 120 are arranged in parallel, and the anti-flashback assembly 130 is located between the two combustion mesh assemblies 120. Of the two combustion mesh assemblies 120, the one farther from the gas receiving chamber 111 is used for the combustion flame, while the one closer to the gas receiving chamber 111 has smaller mesh openings, further reducing the risk of flashback, thereby further improving the safety of the burner 100.

[0181] In yet other embodiments, the burner 100 includes two combustion mesh assemblies 120 and two anti-flashback assemblies 130. In a direction away from the gas receiving chamber 111, the two combustion mesh assemblies 120 and the two anti-flashback assemblies 130 are stacked in the order of combustion mesh assembly 120, anti-flashback assembly 130, combustion mesh assembly 120, and anti-flashback assembly 130. In this embodiment of the present application, not only is the stability of flame combustion improved and the risk of flashback reduced, but the overall strength of the burner 100 is also increased, thereby improving the reliability of the burner 100.

[0182] It should be understood that the combustion net assembly 120 and the anti-backfire assembly 130 can also be other numbers, and this application does not limit this. It should be understood that the combustion net assembly 120 and the anti-backfire assembly 130 can also be other arrangements, and this application does not limit this.

[0183] 8 , 15 and 16 , in some embodiments, the main body 110 includes: a shell 112 and a guide plate 113 , the guide plate 113 is connected to the shell 112 , the shell 112 and the guide plate 113 together form a gas accommodating chamber 111 , the guide plate 113 has a plurality of guide holes 114 , the guide holes 114 are used to discharge the combustible gas in the gas accommodating chamber 111 to the combustion network assembly 120 , that is, the plurality of guide holes 114 are the above-mentioned gas outlets.

[0184] In this embodiment, the structure of the main body 110 is defined. The main body 110 includes a shell 112 and a guide plate 113. The guide plate 113 is connected to the shell 112 and together they form a gas accommodating chamber 111, which can accommodate a certain amount of combustible gas. Furthermore, the guide plate 113 has a plurality of guide holes 114, through which the combustible gas in the gas accommodating chamber 111 can flow toward the combustion grid assembly 120, allowing the combustible gas to burn on the combustion grid assembly 120, thereby increasing the temperature of the combustion grid assembly 120 and enabling the combustion grid assembly 120 to radiate heat energy. The guide holes 114 can guide the combustible gas. Since the combustible gas flows to the combustion network assembly 120 through the guide holes 114, the positions of multiple guide holes 114 can be rationally designed to enable the combustible gas to flow to the combustion network assembly 120 more evenly, thereby avoiding uneven flame distribution at various positions on the combustion network assembly 120 and maintaining uniform temperature at various positions of the combustion network assembly 120.

[0185] In some embodiments, the plurality of guide holes 114 are evenly distributed on the guide plate 113 .

[0186] In this embodiment, the locations of the plurality of guide holes 114 are limited. Specifically, the plurality of guide holes 114 are evenly distributed on the guide plate 113. Since the combustible gas flows toward the combustion mesh assembly 120 through the guide holes 114, by evenly distributing the plurality of guide holes 114 on the guide plate 113, the combustible gas can flow more evenly toward the combustion mesh assembly 120, thereby avoiding uneven flame distribution at various locations on the combustion mesh assembly 120 and maintaining a uniform temperature at various locations on the combustion mesh assembly 120.

[0187] In some embodiments, the burner 100 further includes a gas pipe 150 connected to the shell 112 and communicating with the gas receiving chamber 111 . The gas pipe 150 is used to input combustible gas into the gas receiving chamber 111 .

[0188] In this embodiment, the structure of the burner 100 is further defined. The burner 100 further includes a gas pipe 150, which is used to input combustible gas into the gas receiving chamber 111. Specifically, the gas pipe 150 is connected to the housing 112 and communicates with the gas receiving chamber 111. The combustible gas flows into the gas receiving chamber 111 through the gas pipe 150, enabling the burner 100 to operate normally.

[0189] In some embodiments, the gas pipe 150 extends into the gas receiving chamber 111 , and a plurality of exhaust holes 151 are provided on the surface of the gas pipe 150 .

[0190] In this embodiment, the structure of the gas pipe 150 is further defined. Specifically, the gas pipe 150 extends into the gas receiving chamber 111, and the portion of the gas pipe 150 located within the gas receiving chamber 111 is provided with a plurality of exhaust holes 151. By extending the gas pipe 150 into the gas receiving chamber 111 and providing a plurality of exhaust holes 151 on the surface of the gas pipe 150 for discharging combustible gas, combustible gas can be discharged from the central area of ​​the gas receiving chamber 111 into the gas receiving chamber 111, thereby achieving a more balanced combustible gas concentration throughout the gas receiving chamber 111. This allows the combustible gas to flow more evenly to the combustion grid assembly 120, thereby improving the uniformity of the flame on the combustion grid assembly 120.

[0191] It should be understood that the multiple exhaust holes 151 can be distributed on the peripheral wall of the gas pipe 150 or located on the end surface of the gas pipe 150, and this application is not limited to this.

[0192] In some specific embodiments, a first diverter plate 152 is provided at one end of the gas pipe 150 located in the gas containing chamber 111. The first diverter plate 152 closes the opening of the gas pipe 150, and a plurality of exhaust holes 151 are formed on the first diverter plate 152. The gas enters the gas containing chamber 111 after the initial diversion through the plurality of exhaust holes 151. The gas in the gas containing chamber 111 is diverted for the second time through the plurality of guide holes 114 on the guide plate 113 and flows to the combustion network assembly 120, thereby effectively improving the uniformity of the flame distribution at the combustion network assembly 120.

[0193] In one possible embodiment, the burner 100 proposed in this application is primarily composed of a combustion surface (i.e., a combustion mesh assembly 120 and a flashback prevention assembly 130), an airflow distribution plate (i.e., a guide plate 113), a cavity (i.e., a gas receiving chamber 111), and an ejector tube (i.e., a gas pipe 150). The combustion surface primarily comprises the flame combustion mesh assembly 120 (i.e., the combustion mesh assembly 120) and the thermal insulation flashback prevention assembly 130 (i.e., the flashback prevention assembly 130).

[0194] A mixture of gas and air (i.e., combustible gas) enters through the ejector tube and, after thorough mixing within the chamber, is evenly distributed through the airflow distribution plate onto the combustion surface. The flame burns on the flame combustion mesh assembly 120 on the combustion surface. The thermal insulation and backfire prevention assembly 130 supports the flame combustion mesh assembly 120 and provides a partial heat barrier. The flame reaches a temperature above 800°C, heating the flame combustion mesh assembly 120 and generating heat radiation.

[0195] The flame combustion net assembly 120 is located outside the heat-insulating and anti-backfire assembly 130 , and the fuel gas flow (ie, combustible gas) burns on the flame combustion net assembly 120 after passing through the heat-insulating and anti-backfire assembly 130 .

[0196] The flame combustion mesh assembly 120 is a mesh structure made of a high-temperature corrosion-resistant metal, with a mesh size between 40 and 200 meshes, and a thickness between 0.1 mm and 0.2 mm. The thermal insulation and anti-backfire assembly 130 is also a mesh structure made of a high-temperature corrosion-resistant metal, with a mesh size between 5 and 40 meshes, and a thickness between 0.2 mm and 0.4 mm. The mesh size of the thermal insulation support is larger than the mesh size of the flame combustion mesh assembly 120. There is a certain distance between the thermal insulation and anti-backfire assembly 130 and the flame combustion mesh assembly 120, which can be 0.1 mm to 1 mm.

[0197] 11 , the present application further proposes a cooking appliance, comprising the burner 100 proposed in the above technical solution.

[0198] The cooking appliance 200 provided in the present application includes the burner 100 proposed in the above technical solution, and therefore has all the beneficial effects of the burner 100 in the above technical solution.

[0199] The cooking appliance 200 includes a pizza oven.

[0200] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0201] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A burner, wherein: include: The main body comprises a gas containing chamber, wherein the gas containing chamber is used to contain combustible gas; A combustion net assembly, wherein the opening of the gas containing cavity faces the combustion net assembly so that the combustible gas can burn on the surface of the combustion net assembly, and the combustion net assembly is arranged to face the outside to radiate heat energy to the outside; An anti-flashback component is used to prevent the flame on the combustion net component from entering the gas containing cavity.

2. The burner according to claim 1, wherein: The combustion mesh assembly comprises a plurality of combustion meshes, and the combustion mesh assembly is configured such that the equivalent diameter of the combustion meshes is ≤0.8 mm; In the thickness direction of the combustion net assembly, the anti-flashback assembly is arranged side by side with the combustion net assembly, and the anti-flashback assembly satisfies at least one of the following conditions: "The anti-flashback assembly is constructed to have thermal insulation and is located between the combustion mesh assembly and the main body; The anti-flashback component exchanges heat with the combustion net component to dissipate heat from the combustion net component.

3. The burner according to claim 1 or 2, wherein: The anti-flashback component is located on a side of the combustion net component facing the main body.

4. The burner according to any one of claims 1 to 3, wherein: Also includes: A support mesh assembly is installed between the combustion mesh assembly and the anti-flashback assembly, and the support mesh assembly is used to support the combustion mesh assembly.

5. The burner according to claim 4, wherein: There is a distance between the anti-flashback component and the supporting mesh component, and there is a distance between the supporting mesh component and the combustion mesh component.

6. The burner according to claim 4 or 5, wherein: The support net assembly includes at least one support net, and the support net is made of metal material.

7. The burner according to claim 6, wherein: The mesh number of the support net ranges from 5 meshes to 40 meshes.

8. The burner according to claim 6 or 7, wherein: The thickness of the support mesh ranges from 0.2 mm to 2 mm.

9. The burner according to any one of claims 2 to 8, wherein: The combustion mesh assembly is constructed to satisfy: 0.05 mm ≤ the equivalent diameter of each combustion mesh hole ≤ 0.3 mm.

10. The burner according to any one of claims 1 to 9, wherein: The combustion net assembly includes at least one combustion net, and the combustion net is made of metal material.

11. The burner according to claim 10, wherein: The mesh number of the combustion net ranges from 40 meshes to 200 meshes.

12. The burner according to claim 10 or 11, wherein: The thickness of the combustion net ranges from 0.1 mm to 0.5 mm.

13. The burner according to any one of claims 10 to 12, wherein: The surface porosity of the combustion net is ≥40%.

14. The burner according to any one of claims 1 to 13, wherein: The anti-flashback assembly comprises at least one flashback barrier net, and the flashback barrier net is made of metal material.

15. The burner according to claim 14, wherein: The mesh number of the tempered barrier net ranges from 40 meshes to 200 meshes.

16. The burner according to claim 14 or 15, wherein: The tempering barrier mesh has a thickness ranging from 0.15 mm to 2 mm.

17. The burner according to any one of claims 14 to 16, wherein: The tempering barrier net includes a plurality of tempering-proof mesh holes, and the tempering barrier net is configured to satisfy: 0.8 mm<equivalent diameter of each tempering-proof mesh hole≤3 mm.

18. The burner according to any one of claims 2 to 17, wherein: The anti-flashback assembly comprises a plurality of anti-flashback meshes, and the ratio of the equivalent diameter of the anti-flashback meshes to the equivalent diameter of the combustion meshes ranges from 1 to 60.

19. The burner according to any one of claims 1 to 18, wherein: The anti-flashback component is in point contact with the combustion mesh component.

20. The burner according to any one of claims 1 to 19, wherein: The anti-flashback component is a wave net.

21. The burner according to any one of claims 2 and 4-20, wherein: There are multiple anti-flashback components, and the anti-flashback components are distributed on both sides of the combustion net component; or A plurality of the anti-flashback assemblies are located on the same side of the combustion mesh assembly.

22. The burner according to any one of claims 1 to 13, wherein: The anti-flashback component is a heat-insulating material piece filled between the combustion net component and the main body.

23. The burner according to claim 22, wherein: The anti-backfire component is thermal insulation wool or quartz wool.

24. The burner according to any one of claims 1 to 23, wherein: The subject includes: case; A guide plate is connected to the shell, and the shell and the guide plate together enclose the gas containing chamber. The guide plate has a plurality of guide holes, and the guide holes are used to discharge the combustible gas in the gas containing chamber to the combustion network assembly.

25. The burner according to claim 24, wherein The plurality of guide holes are evenly distributed on the guide plate.

26. A burner according to claim 24 or 25, wherein Also includes: A gas pipe is connected to the shell and communicated with the gas containing chamber, and the gas pipe is used to input the combustible gas into the gas containing chamber.

27. The burner according to claim 26, wherein The gas pipe extends into the gas containing cavity, and a plurality of exhaust holes are arranged on the surface of the gas pipe.

28. A cooking appliance, wherein: include: A burner as claimed in any one of claims 1 to 27.

29. The cooking appliance according to claim 28, wherein The cooking appliance includes a pizza oven.

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