Burner and cooking utensil

Abstract

The utility model discloses a burner and a cooking utensil, the burner comprises a main body, the main body is internally provided with a fuel gas containing cavity, and the main body is provided with a gas outlet communicated with the fuel gas containing cavity; the combustion net is arranged on the main body, an opening of the gas outlet faces the combustion net, a plurality of combustion net holes are formed in the combustion net, and the equivalent diameter of the combustion net holes is smaller than or equal to 0.8 mm; the anti-backfire part is arranged in the thickness direction of the combustion net, the anti-backfire part and the combustion net are arranged side by side, and the anti-backfire part at least meets one of the following conditions that the anti-backfire part is constructed to have heat insulation performance and is located between the combustion net and the main body, and the anti-backfire part exchanges heat with the combustion net to dissipate heat of the combustion net. According to the combustor provided by the utility model, the phenomenon of dynamic tempering is avoided by limiting the equivalent diameter of the combustion meshes, and the phenomenon of static tempering is avoided through the anti-tempering piece, so that the use reliability of the combustor is effectively improved.

Description

[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. Technical Field

[0003] The utility model relates to the technical field of cooking equipment, in particular to a burner and a cooking utensil. Background Art

[0004] Existing infrared burners usually use ceramic materials to make the combustion surface. Infrared burners with this structure have the problem of complex structure, and because the ceramic plate transfers heat to the gas mixing chamber, backfire is likely to occur. Utility Model Content

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a burner that prevents dynamic flashback by limiting the equivalent diameter of the combustion mesh and prevents static flashback by using a flashback preventer, thereby effectively improving the reliability of the burner.

[0006] The utility model also provides a cooking utensil comprising the burner.

[0007] According to the burner of the embodiment of the present invention, it includes: a main body, a gas accommodating chamber is provided in the main body, and the main body is provided with a gas outlet connected to the gas accommodating chamber; a combustion net, the combustion net is provided on the main body and the opening of the gas outlet is facing the combustion net, the combustion net is provided with a plurality of combustion mesh holes, and the combustion net is constructed so that the equivalent diameter of the combustion mesh holes is ≤0.8mm; an anti-backfire component, in the thickness direction of the combustion net, the anti-backfire component and the combustion net are arranged side by side, and the anti-backfire component satisfies at least one of the following conditions: "the anti-backfire component is constructed to have heat insulation and is located between the combustion net and the main body; the anti-backfire component exchanges heat with the combustion net to dissipate heat from the combustion net."

[0008] According to the burner of the embodiment of the present invention, 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, 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 away from the gas containing chamber, thereby improving the reliability of the burner. The burner is provided with an anti-backfire component, which is used to block the transfer of heat toward the gas containing chamber and / or to improve the heat dissipation efficiency of the combustion mesh, thereby effectively reducing the risk of static backfire and further improving the reliability of the burner.

[0009] In some embodiments, the backfire prevention member is a heat-insulating material member filled between the combustion net and the main body.

[0010] In some embodiments, the tempering prevention member is thermal insulation wool or quartz wool.

[0011] In some embodiments, the flashback prevention member is in contact with the combustion network point.

[0012] In some embodiments, the tempering prevention member is a metal member and is formed into a mesh structure.

[0013] In some embodiments, the anti-backfire member includes a plurality of anti-backfire meshes, and the anti-backfire member is configured to satisfy: 0.8 mm < equivalent diameter of each anti-backfire mesh ≤ 3 mm.

[0014] In some embodiments, the tempering prevention member has a thickness of 0.15 mm to 2 mm.

[0015] In some embodiments, the tempering preventing member is formed as a wavy net.

[0016] In some embodiments, the anti-backfire component 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 ranges from 1 to 60.

[0017] In some embodiments, there are multiple anti-backfire members, and the anti-backfire members are distributed on both sides of the combustion net; or multiple anti-backfire members are located on the same side of the combustion net.

[0018] In some embodiments, the combustion mesh has an surface porosity of ≥40%.

[0019] In some embodiments, the combustion web has a thickness ranging from 0.1 mm to 0.5 mm.

[0020] In some embodiments, the combustion mesh is configured to satisfy: 0.05 mm ≤ the equivalent diameter of each combustion mesh hole ≤ 0.3 mm.

[0021] In some embodiments, the main body includes: a shell; a guide plate connected to the shell, the shell and the guide plate together form the gas holding chamber, the guide plate has a plurality of guide holes, and the guide holes are used to discharge the combustible gas in the gas holding chamber to the combustion network.

[0022] In some embodiments, the plurality of guide holes are evenly distributed on the guide plate.

[0023] In some embodiments, the invention further includes: a gas pipe connected to the shell and communicating with the gas accommodating chamber, wherein the gas pipe is used to input the combustible gas into the gas accommodating chamber.

[0024] In some embodiments, the gas pipe extends into the gas containing cavity, and a plurality of exhaust holes are provided on the surface of the gas pipe.

[0025] The cooking appliance according to the embodiment of the present invention includes the burner described in the above technical solution.

[0026] In some embodiments, the cooking appliance comprises a pizza oven.

[0027] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0029] Figure 1 is a schematic diagram of a burner according to an embodiment of the present utility model;

[0030] Figure 2 yes Figure 1 Explosion of the burner Figure 1 ;

[0031] Figure 3 yes Figure 1 Explosion of the burner Figure 2 ;

[0032] Figure 4 is a schematic diagram of a combustion network according to an embodiment of the present utility model;

[0033] Figure 5 This is a schematic diagram of the calculation results of quenching diameter at different temperatures and equivalence ratios;

[0034] Figure 6 It is a schematic diagram of gas combustion at the combustion network;

[0035] Figure 7 yes Figure 1 A cross-sectional view of a burner in FIG.

[0036] Figure 8 yes Figure 7 Enlarged view of part A.

[0037] Figure numerals: 100, burner; 110, main body; 111, gas containing chamber; 112, shell; 113, guide plate; 114, guide hole; 120, combustion net; 130, anti-backfire component; 140, gas pipe; 141, exhaust hole; 142, first diverter plate. DETAILED DESCRIPTION

[0038] The following describes embodiments of the present invention in detail. 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 intended only to explain the present invention and are not to be construed as limiting the present invention.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0040] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0041] Reference below Figures 1-8 A burner 100 according to an embodiment of the present invention will be described.

[0042] Reference Figure 1 、 Figure 2 and Figure 3 According to an embodiment of the present invention, the burner 100 includes: a main body 110 and a combustion net 120. A gas accommodating chamber 111 is provided in the main body 110. The main body 110 is provided with a gas outlet connected to the gas accommodating chamber 111. The combustion net 120 is provided on the main body 110 and the opening of the gas outlet faces the combustion net 120. The combustion net 120 is provided with a plurality of combustion mesh holes. The combustion net 120 is configured such that the equivalent diameter of the combustion mesh holes is ≤0.8 mm.

[0043] The gas holding chamber 111 is used to hold combustible gas. The gas in the gas holding chamber 111 can flow to the combustion net 120 through the gas outlet, and then the gas flows through the multiple combustion mesh holes on the combustion net 120 to the side of the combustion net 120 away from the gas holding chamber 111, so that the gas can burn on the side of the combustion net 120 away from the gas holding chamber 111. The flame formed by the combustion heats the combustion net 120, and the combustion net 120 can be heated to above 800°C. The heated combustion net 120 can form infrared heat radiation to heat external objects.

[0044] It should be noted that because flames propagate along the gas flow path, if the flames propagate to the gas chamber 111, they may burn within the chamber 111, causing flashback. This flashback phenomenon, where the flames propagate directly to the chamber 111, is called dynamic flashback. To prevent dynamic flashback, in the embodiment of the present invention, the equivalent diameter of the combustion mesh is ≤0.8 mm.

[0045] 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.

[0046] The calculation formula for the quenching diameter dm is:

[0047] 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.

[0048] Among them, the thermal conductivity coefficient λ of the combustion mesh wall is g Determined by the material of the combustion net, the burning speed S L Determined by the type of gas and its premix ratio with air; isobaric specific heat capacity c p Affected by temperature; gas density ρg Affected by the equivalence ratio, refer to Figure 5 , Figure 5 The figure is a schematic diagram of the calculation results of the quenching diameter at different temperatures and equivalence ratios. The calculation selects dm≤0.8mm, which means that the equivalent diameter of the combustion mesh mentioned above is ≤0.8mm.

[0049] In the embodiment of the present invention, 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 small holes or channels, the flame will be quenched. That is, the combustion mesh with a smaller equivalent diameter can prevent the flame from propagating to the gas receiving chamber 111. In other words, the flame cannot pass through the combustion mesh and can only burn on the side of the combustion mesh 120 away from the gas receiving chamber 111. Figure 4 and Figure 6 In the embodiment of the present invention, the equivalent diameter of the combustion mesh is ≤0.8 mm, preventing the flame from passing through the combustion mesh, thereby preventing the flame from propagating to the gas receiving chamber 111. Furthermore, when the gas flow velocity is less than or equal to the flame propagation rate, the flame can stably burn at the opening of the combustion mesh facing away from the gas receiving chamber 111, effectively improving the reliability of the burner 100.

[0050] Reference Figure 3 、 Figure 7 and Figure 8 In an embodiment of the present invention, the burner 100 further includes an anti-backfire component 130 , which is arranged side by side with the combustion net 120 in the thickness direction of the combustion net 120 . The anti-backfire component 130 is constructed to have heat insulation properties and is located between the combustion net 120 and the main body 110 .

[0051] Because the burning flame will heat the combustion net 120, the heat of the combustion net 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.

[0052] In an embodiment of the present invention, an anti-backfire component 130 is provided between the combustion net 120 and the main body 110, and the anti-backfire component 130 has heat insulation properties, so that the anti-backfire component 130 can block the heat transferred from the combustion net 120 to the main body 110, thereby reducing the temperature in the gas containing chamber 111 and effectively reducing the risk of static backfire.

[0053] In the above embodiment, the anti-backfire component 130 is constructed to have heat insulation properties and is located between the combustion net 120 and the main body 110. In other embodiments, the anti-backfire component 130 can also be configured to exchange heat with the combustion net 120 to dissipate heat from the combustion net 120. Specifically, the anti-backfire component 130 is arranged on the side of the combustion net 120 that is away from the gas accommodating chamber 111. When the burner 100 is working, the flame heats the combustion net 120, and the anti-backfire component 130 exchanges heat with the combustion net 120 to improve the heat dissipation efficiency of the combustion net 120, thereby reducing the temperature of the combustion net 120 facing the gas accommodating chamber 111, thereby reducing the risk of static backfire.

[0054] In some other embodiments, two anti-backfire components 130 can be provided, wherein one anti-backfire component 130 is constructed to have heat insulation properties and is located between the combustion net 120 and the main body 110, and the other anti-backfire component 130 is provided on the side of the combustion net 120 away from the gas containing chamber 111 for dissipating heat from the combustion net 120.

[0055] The two anti-backfire parts 130 in the embodiment of the present invention, one of which is used to block the heat from being transferred toward the gas receiving chamber 111, and the other is used to improve the heat dissipation efficiency of the combustion network 120, effectively reducing the temperature in the gas receiving chamber 111 and effectively reducing the risk of static backfire.

[0056] According to the burner 100 of the embodiment of the present invention, 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 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 component 130, which is used to block the transfer of heat toward the gas containing chamber 111 and / or to improve the heat dissipation efficiency of the combustion mesh 120, thereby effectively reducing the risk of static backfire and further improving the reliability of the use of the burner 100.

[0057] In some further embodiments, 0.05 mm ≤ the equivalent diameter of the combustion mesh ≤ 0.8 mm.

[0058] 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 120 will increase, affecting the combustion efficiency and thus the heating effect of the burner 100. In the embodiment of the present invention, 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 120 smoothly and burn on the side of the combustion mesh 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.

[0059] 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.

[0060] In some preferred embodiments, the equivalent diameter of the combustion mesh is 0.05 mm ≤ 0.3 mm.

[0061] In embodiments where the equivalent diameter of the combustion mesh is ≤0.8mm, the flame can burn stably on the combustion mesh without flashback. In embodiments where the equivalent diameter of the combustion mesh is ≤0.3mm, the flame can burn stably on the combustion mesh, and 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.

[0062] In some embodiments, the surface porosity of the combustion mesh 120 is ≥40%.

[0063] It should be noted that the surface porosity of the combustion mesh 120 refers to the area ratio of the combustion mesh per unit area. Because the multiple combustion meshes on the combustion mesh 120 are unevenly distributed, the present invention limits the surface porosity of the combustion mesh 120 to ensure a more uniform distribution of the gas on the combustion mesh 120, reduce the temperature difference between different positions of the combustion mesh 120, and improve the heating effect of the burner 100.

[0064] In some further embodiments, the combustion web 120 has a thickness ranging from 0.1 mm to 0.5 mm.

[0065] If the thickness of the combustion net 120 is less than 0.1 mm, the strength of the combustion net 120 will be affected, and the combustion net 120 will be more easily deformed. If the thickness of the combustion net 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 invention, the thickness of the combustion net 120 ranges from 0.1 mm to 0.5 mm, which ensures the strength of the combustion net 120 without making the overall thickness of the burner 100 too thick, thereby reducing the cost of the burner 100.

[0066] In some specific embodiments, the thickness of the combustion web 120 is any one of 0.1 mm, 0.25 mm, 0.38 mm, and 0.5 mm, or any range therebetween.

[0067] In some embodiments, the flashback prevention member 130 has heat insulation properties and is located between the combustion mesh 120 and the main body 110 , and the flashback prevention member 130 is in point contact with the combustion mesh 120 .

[0068] In the embodiment of the present invention, the anti-backfire component 130 is in point contact with the combustion net 120, and the contact thermal resistance is large. The efficiency of transferring heat from the combustion net 120 to the anti-backfire component 130 is reduced, and the heat on the combustion net 120 is difficult to continue to be transferred to the gas in the gas containing chamber 111 through the anti-backfire component 130, thereby preventing the temperature in the gas containing chamber 111 from rising to the natural point temperature of the gas.

[0069] It should be noted that the point contact between the anti-backfire component 130 and the combustion net 120 means that the part where the anti-backfire component 130 contacts the combustion net 120 is in point contact. There can be multiple contact points between the anti-backfire component 130 and the combustion net 120, which ensures the reliability of the connection between the anti-backfire component 130 and the combustion net 120.

[0070] In some specific embodiments, the anti-backfire member 130 is a metal member, formed into a mesh structure, located between the combustion mesh 120 and the main body 110 , and in point contact with the combustion mesh 120 .

[0071] In the embodiment of the present invention, the anti-backfire member 130 has a simple structure and is easy to install, thereby reducing the cost of the burner 100. In addition, the anti-backfire member 130 is constructed as a metal mesh structure, so that the anti-backfire member 130 can also support the combustion net 120. It is understandable that if the combustion net 120 is deformed due to excessive temperature, it will cause the flame on the surface of the combustion net 120 to be unstable, thereby affecting the heating effect. In order to prevent the combustion net 120 from being deformed, the embodiment of the present invention can support the combustion net 120 through the anti-backfire member 130 to prevent the combustion net 120 from being deformed. The anti-backfire member 130 can be made of a material with high strength and high temperature resistance to improve the stability of the combustion net 120.

[0072] In some further embodiments, the anti-backfire component 130 is located between the combustion net 120 and the main body 110, the anti-backfire component 130 is a metal component, the anti-backfire component 130 is formed into a mesh structure, the anti-backfire component 130 includes multiple anti-backfire mesh holes, and the anti-backfire component 130 is constructed to meet the following conditions: 0.8 mm < equivalent diameter of each anti-backfire mesh hole ≤ 3 mm.

[0073] When the burner 100 is working, the gas in the gas holding chamber 111 flows toward the combustion net 120, and passes through the anti-backfire mesh and the combustion mesh in turn to the side of the combustion net 120 away from the gas holding chamber 111, and burns on the side of the combustion net 120 away from the gas holding chamber 111. The flame formed by the combustion heats the combustion net 120, and the heated combustion net 120 can form infrared heat radiation to heat external objects.

[0074] If the equivalent diameter of the anti-backfire mesh is less than 0.8 mm, the resistance to gas passing through the anti-backfire member 130 will increase, affecting 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 member 130 and the combustion net 120 will be reduced, affecting the support effect of the anti-backfire member 130 on the combustion net 120. In the embodiment of the present invention, 0.8 mm < the equivalent diameter of each anti-backfire mesh ≤ 3 mm reduces the resistance to gas passing through the anti-backfire member 130, allowing the combustible gas to flow smoothly to the combustion net 120, allowing the burner 100 to operate normally, while also ensuring the support effect of the anti-backfire member 130 on the combustion net 120 and reducing the risk of deformation of the combustion net 120.

[0075] 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.

[0076] 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.

[0077] In some embodiments, the anti-backfire member 130 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 ranges from 1 to 60.

[0078] 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 member 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, the opening area of ​​the anti-backfire mesh is too large, which reduces the number of contact points between the anti-backfire member 130 and the combustion net 120, affecting the support effect of the anti-backfire member 130 on the combustion net 120. In the embodiment of the present invention, 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 member 130, allows the combustible gas to flow smoothly to the combustion net 120, and enables the burner 100 to operate normally. At the same time, it also ensures the support effect of the anti-backfire member 130 on the combustion net 120 and reduces the risk of deformation of the combustion net 120.

[0079] 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.

[0080] In some embodiments, the surface porosity of the tempering preventing member 130 is ≥40%.

[0081] It should be noted that the surface porosity of the anti-backfire member 130 refers to the area ratio of the anti-backfire mesh per unit area. Because the multiple anti-backfire meshes on the anti-backfire member 130 are unevenly distributed, the present invention limits the surface porosity of the anti-backfire member 130 to prevent the anti-backfire member 130 from affecting the uniformity of gas distribution. This ensures a more even distribution of gas on the combustion mesh 120, reduces temperature differences at different locations on the combustion mesh 120, and improves the heating effect of the burner 100.

[0082] In some embodiments, the tempering preventing member 130 has a thickness of 0.15 mm to 2 mm.

[0083] If the thickness of the anti-backfire member 130 is less than 0.15 mm, the strength of the anti-backfire member 130 will be affected, and the anti-backfire member 130 will be easily deformed. If the thickness of the anti-backfire member 130 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 invention, the thickness of the anti-backfire member 130 is 0.15 mm to 2 mm, which ensures the strength of the anti-backfire member 130 without making the overall thickness of the burner 100 too thick, thereby reducing the cost of the burner 100.

[0084] In some specific embodiments, the thickness of the tempering prevention member 130 is 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.

[0085] 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 net 120, the opening of the gas accommodating chamber 111 is facing the combustion net 120, so that the combustible gas can burn on the surface of the combustion net 120, and the combustion net 120 is set to face the outside to radiate heat energy to the outside; an anti-backfire component 130, installed between the combustion net 120 and the main body 110, the anti-backfire component 130 is used to block the transfer of heat toward the gas accommodating chamber 111, and the anti-backfire component 130 is also used to support the combustion net 120, the anti-backfire component 130 is a mesh structure and the mesh size of the anti-backfire component 130 is larger than the mesh size of the combustion net 120.

[0086] The burner 100 proposed in the present invention 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 screen 120, and a flashback preventer 130. The main body 110 includes a gas receiving chamber 111 for receiving combustible gas, the combustion screen 120 for burning the combustible gas, and the flashback preventer 130 for supporting the combustion screen 120.

[0087] 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 net 120, allowing the combustible gas to flow toward the combustion net 120. The combustible gas burns on the combustion net 120, and the flame temperature is above 800°C. The flame heats the combustion net 120, generating infrared heat radiation, which enables the combustion net 120 to radiate heat energy.

[0088] Furthermore, the present invention also provides a backfire prevention member 130 in the burner 100. The backfire prevention member 130 is used to support the combustion mesh 120. Understandably, if the combustion mesh 120 deforms, the flame on the surface of the combustion mesh 120 will become unstable, thereby affecting the heating effect. To prevent the combustion mesh 120 from deforming, the present invention provides a backfire prevention member 130 in the burner 100. The backfire prevention member 130 can support the combustion mesh 120 to prevent deformation of the combustion mesh 120. The backfire prevention member 130 can be made of a high-strength and high-temperature-resistant material to enhance the stability of the combustion mesh 120.

[0089] Furthermore, since the backfire prevention member 130 is located between the main body 110 and the combustion net 120, the combustible gas needs to pass through the backfire prevention member 130 to flow toward the combustion net 120. To ensure that the combustible gas can flow smoothly through the backfire prevention member 130, the present invention sets the mesh size of the backfire prevention member 130 to be larger than the mesh size of the combustion net 120. This reduces the resistance of the backfire prevention member 130 to the combustible gas, allowing the combustible gas to flow smoothly toward the combustion net 120, and allowing the burner 100 to operate normally.

[0090] By providing the burner 100 with a flashback preventer 130 for supporting the combustion net 120, deformation of the combustion net 120 can be prevented, the stability of the combustion net 120 can be improved, and the flame can be stably burned on the combustion net 120. By setting the mesh size of the flashback preventer 130 larger than the mesh size of the combustion net 120, the resistance of the flashback preventer 130 to the combustible gas can be reduced, allowing the combustible gas to flow smoothly to the combustion net 120, so that the burner 100 can operate normally.

[0091] In some embodiments, optionally, as Figure 1 、 Figure 2 and Figure 3 As shown, the mesh number of the flashback preventing member 130 is smaller than the mesh number of the combustion net 120 .

[0092] In this embodiment, the combustion mesh 120 and the flashback preventer 130 are further defined. Specifically, the mesh size of the flashback preventer 130 is smaller than that of the combustion mesh 120. By setting the mesh size of the flashback preventer 130 smaller than that of the combustion mesh 120, the mesh size of the flashback preventer 130 can be increased, thereby reducing the resistance of the flashback preventer 130 to the combustible gas, allowing the combustible gas to flow smoothly to the combustion mesh 120, and enabling the burner 100 to operate normally.

[0093] In some embodiments, optionally, the mesh number of the combustion net 120 ranges from 40 meshes to 200 meshes, and the mesh number of the tempering prevention member 130 ranges from 5 meshes to 40 meshes.

[0094] In this embodiment, the mesh size of the combustion net 120 and the mesh size range of the flashback preventer 130 are limited. Specifically, the mesh size of the combustion net 120 ranges from 40 to 200 mesh. It is understood that the combustion net 120 is used to burn combustible gas to generate a flame, which requires the flame to burn stably and distributed on the combustion net 120. Therefore, the mesh size of the combustion net 120 cannot be too small, otherwise it will result in an uneven flame. Therefore, the present invention sets the mesh size of the combustion net 120 within the range of 40 to 200 mesh to ensure that the flame on the combustion net 120 remains stable.

[0095] Furthermore, the mesh size of the anti-backfire member 130 ranges from 5 to 40. Since the anti-backfire member 130 is disposed between the combustion net 120 and the gas receiving chamber 111, the combustible gas needs to pass through the anti-backfire member 130 to reach the combustion net 120. Therefore, the anti-backfire member 130 needs to be configured as a mesh structure with a large mesh size and a small mesh size. To this end, the present invention sets the mesh size of the anti-backfire member 130 within the range of 5 to 40 to ensure that the combustible gas can smoothly pass through the anti-backfire member 130.

[0096] In some embodiments, optionally, the combustion mesh 120 has a thickness ranging from 0.1 mm to 0.5 mm.

[0097] In this embodiment, the thickness of the combustion net 120 is limited, specifically, the thickness range of the combustion net 120 is 0.1mm to 0.5mm. This ensures that the strength of the combustion net 120 meets the requirements of use while avoiding the problem of increased product volume caused by excessive thickness of the combustion net 120.

[0098] In some embodiments, optionally, the tempering preventing member 130 has a thickness ranging from 0.15 mm to 2 mm.

[0099] In this embodiment, the thickness of the anti-backfire member 130 is limited. Specifically, the thickness of the anti-backfire member 130 ranges from 0.15 mm to 2 mm. As can be understood, the anti-backfire member 130 supports the combustion net 120. Therefore, if the strength of the anti-backfire member 130 is too low, the support effect of the anti-backfire member 130 will be poor, which may cause deformation of the combustion net 120. Therefore, the present invention limits the thickness of the anti-backfire member 130 to a range of 0.15 mm to 2 mm to ensure that the strength of the anti-backfire member 130 meets the requirements of use. Furthermore, by ensuring that the anti-backfire member 130 has a certain thickness, it can also provide a certain thermal insulation effect.

[0100] In some embodiments, the combustion mesh 120 and the flashback prevention member 130 are optionally made of metal.

[0101] In this embodiment, the combustion mesh 120 and the anti-backfire member 130 are further defined. Specifically, the combustion mesh 120 and the anti-backfire member 130 are made of metal. Using metal improves the strength of the combustion mesh 120 and the anti-backfire member 130. Compared to a ceramic combustion plate, the combustion mesh 120 and the anti-backfire member 130 in the burner 100 of the present invention are stronger. Furthermore, the metal mesh structure is easy to process and simplifies assembly, thereby reducing production complexity.

[0102] In some embodiments, optionally, there is a distance between the flashback prevention member 130 and the combustion mesh 120 .

[0103] In this embodiment, the anti-backfire member 130 and the combustion net 120 are further defined. Specifically, a gap is provided between the anti-backfire member 130 and the combustion net 120. This is equivalent to providing an air insulation layer between the anti-backfire member 130 and the combustion net 120. Compared to a structure where the anti-backfire member 130 and the combustion net 120 are placed in close proximity, the present invention reduces heat transfer between the anti-backfire member 130 and the combustion net 120 by providing a gap between them, thereby lowering the temperature of the anti-backfire member 130, reducing the possibility of flashback, and improving the safety of the burner 100.

[0104] In some embodiments, the backfire prevention member 130 is a heat insulating material member filled between the combustion mesh 120 and the main body 110 .

[0105] 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.

[0106] In some specific embodiments, the tempering prevention member 130 may be thermal insulation wool or quartz wool.

[0107] 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 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.

[0108] In some embodiments, the anti-backfire component 130 is arranged on the side of the combustion net 120 away from the gas containing chamber 111. The anti-backfire component 130 exchanges heat with the combustion net 120 to dissipate heat from the combustion net 120. The anti-backfire component 130 is a metal component and is formed into a mesh structure.

[0109] In an embodiment of the present invention, the anti-backfire component 130 is a metal component, which is beneficial to improving the heat dissipation efficiency of the anti-backfire component 130, thereby improving the heat dissipation efficiency of the combustion net 120 and reducing the risk of static backfire. In addition, the anti-backfire component 130 can also support the combustion net 120 to avoid deformation of the combustion net 120.

[0110] In some embodiments, a flashback preventer 130 is disposed on a side of the combustion mesh 120 facing away from the gas receiving chamber 111. The flashback preventer 130 exchanges heat with the combustion mesh 120 to dissipate heat from the combustion mesh 120. The flashback preventer 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.

[0111] Through the above technical solution, the wavy anti-backfire member 130 increases the contact area between the anti-backfire member 130 and the air, increases the heat dissipation efficiency of the anti-backfire member 130, thereby increasing the heat dissipation effect of the combustion network 120 and further reducing the risk of static backfire.

[0112] In some embodiments, the flashback prevention member 130 is configured to have heat insulation properties and is located between the combustion mesh 120 and the main body 110 , and the combustion mesh 120 is formed in a corrugated shape.

[0113] In the embodiment of the present invention, an anti-backfire component 130 is provided between the combustion net 120 and the main body 110, and the anti-backfire component 130 has heat insulation properties, so that the anti-backfire component 130 can block the heat transferred from the combustion net 120 to the main body 110, thereby reducing the temperature in the gas accommodating chamber 111 and effectively reducing the risk of static backfire; the wavy combustion net 120 increases the contact area between the combustion net 120 and the air, increases the heat dissipation effect of the combustion net 120, and further reduces the risk of static backfire.

[0114] In some embodiments, a plurality of flashback prevention members 130 are provided, and the flashback prevention members are distributed on both sides of the combustion net 120 .

[0115] In an embodiment of the present invention, the anti-backfire component 130 located between the combustion net 120 and the main body 110 is used to block the transfer of heat toward the gas accommodating chamber 111. The anti-backfire component 130 located on the side of the combustion net 120 away from the gas accommodating chamber 111 is used to improve the heat dissipation efficiency of the combustion net 120, effectively reduce the temperature in the gas accommodating chamber 111, and effectively reduce the risk of static backfire.

[0116] In other embodiments, multiple anti-backfire parts 130 are provided, and the multiple anti-backfire parts 130 are all arranged between the combustion net 120 and the main body 110. Through the heat insulation of the multiple anti-backfire parts 130, the temperature in the gas containing chamber 111 is further reduced, effectively reducing the risk of static backfire.

[0117] In some other embodiments, multiple anti-backfire parts 130 are provided, and the multiple anti-backfire parts 130 are all arranged on the side of the combustion net 120 away from the gas accommodating chamber 111. The multiple anti-backfire parts 130 increase the heat dissipation area, improve the heat dissipation efficiency of the combustion net 120, and effectively reduce the risk of static backfire.

[0118] In some specific embodiments, the burner 100 includes a combustion net 120 and two flashback prevention members 130. One of the two flashback prevention members 130 is located on the side of the combustion net 120 facing the gas receiving chamber 111, and the other of the two flashback prevention members 130 is located on the side of the combustion net 120 facing away from the gas receiving chamber 111. In the embodiment of the present application, the burner 100 has a simple structure and effectively reduces the risk of flashback.

[0119] In other specific embodiments, the burner 100 includes two combustion nets 120 and a flashback preventer 130. The two combustion nets 120 are arranged in parallel, and the flashback preventer 130 is located between the two combustion nets 120. Of the two combustion nets 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 meshes, further reducing the risk of flashback, thereby further improving the safety of the burner 100.

[0120] In yet other embodiments, the burner 100 includes two combustion nets 120 and two flashback preventers 130. In a direction away from the gas receiving chamber 111, the two combustion nets 120 and the two flashback preventers 130 are stacked in the order of combustion net 120, flashback preventer 130, combustion net 120, and flashback preventer 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.

[0121] It should be understood that the combustion net 120 and the anti-backfire parts 130 can also be other numbers, and this application does not limit this. It should be understood that the combustion net 120 and the anti-backfire parts 130 can also be other arrangements, and this application does not limit this.

[0122] Reference Figure 3 、 Figure 7 and Figure 8 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 120, that is, the plurality of guide holes 114 are the above-mentioned gas outlets.

[0123] 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 receiving 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 receiving chamber 111 can flow toward the combustion network 120, allowing the combustible gas to burn on the combustion network 120, thereby increasing the temperature of the combustion network 120 and enabling the combustion network 120 to radiate heat energy. The guide holes 114 can guide the combustible gas. Since the combustible gas flows to the combustion network 120 through the guide holes 114, the positions of multiple guide holes 114 can be rationally designed to make the combustible gas flow to the combustion network 120 more evenly, thereby avoiding uneven flame distribution at various positions on the combustion network 120 and keeping the temperature at various positions of the combustion network 120 uniform.

[0124] In some embodiments, the plurality of guide holes 114 are evenly distributed on the guide plate 113 .

[0125] 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 network 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 network 120, thereby avoiding uneven flame distribution at various locations on the combustion network 120 and maintaining a uniform temperature at various locations on the combustion network 120.

[0126] In some embodiments, the burner 100 further includes a gas pipe 140 connected to the shell 112 and communicating with the gas receiving chamber 111 . The gas pipe 140 is used to input combustible gas into the gas receiving chamber 111 .

[0127] In this embodiment, the structure of the burner 100 is further defined. The burner 100 further includes a gas pipe 140, which is used to input combustible gas into the gas receiving chamber 111. Specifically, the gas pipe 140 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 140, enabling the burner 100 to operate normally.

[0128] In some embodiments, the gas pipe 140 extends into the gas receiving chamber 111 , and a plurality of exhaust holes 141 are provided on the surface of the gas pipe 140 .

[0129] In this embodiment, the structure of the gas pipe 140 is further defined. Specifically, the gas pipe 140 extends into the gas holding chamber 111, and the portion of the gas pipe 140 located within the gas holding chamber 111 is provided with a plurality of exhaust holes 141. By extending the gas pipe 140 into the gas holding chamber 111 and providing a plurality of exhaust holes 141 on the surface of the gas pipe 140 for discharging combustible gas, combustible gas can be discharged 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 network 120, thereby improving the uniformity of the flame on the combustion network 120.

[0130] It should be understood that the multiple exhaust holes 141 can be distributed on the peripheral wall of the gas pipe 140 or located on the end surface of the gas pipe 140, and the present invention is not limited to this.

[0131] In some specific embodiments, a first diverter plate 142 is provided at one end of the gas pipe 140 located in the gas accommodating chamber 111. The first diverter plate 142 closes the opening of the gas pipe 140. A plurality of exhaust holes 141 are formed on the first diverter plate 142. The gas enters the gas accommodating chamber 111 after the initial diversion through the plurality of exhaust holes 141. The gas in the gas accommodating 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 120, thereby effectively improving the uniformity of the flame distribution at the combustion network 120.

[0132] In one possible embodiment, the burner 100 proposed in the present invention is primarily composed of a combustion surface (i.e., a combustion net 120 and a flashback prevention member 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 140). The combustion surface primarily comprises a flame combustion net 120 (i.e., a combustion net 120) and a thermally insulating flashback prevention member 130 (i.e., a flashback prevention member 130).

[0133] 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 net 120 on the combustion surface. The thermal insulation and flashback prevention member 130 supports the flame combustion net 120 and provides a partial heat barrier. The flame reaches a temperature exceeding 800°C, heating the flame combustion net 120 and generating heat radiation.

[0134] The flame combustion net 120 is located outside the heat-insulating anti-backfire component 130 , and the fuel gas flow (ie, combustible gas) burns on the flame combustion net 120 after passing through the heat-insulating anti-backfire component 130 .

[0135] The flame combustion net 120 is a mesh structure made of high-temperature corrosion-resistant metal, with a mesh size between 40 and 200, and a thickness between 0.1 mm and 0.2 mm. The thermal insulation anti-temperback member 130 is also a mesh structure made of high-temperature corrosion-resistant metal, with a mesh size between 5 and 40, 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 net 120. There is a certain distance between the thermal insulation anti-temperback member 130 and the flame combustion net 120, which can be 0.1 mm to 1 mm.

[0136] The present invention also provides a cooking appliance, comprising the burner 100 provided in the above technical solution.

[0137] The cooking appliance provided by the present invention 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.

[0138] Cooking appliances include a pizza oven.

[0139] 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 that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0140] Although the embodiments of the present invention 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 purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A burner, characterized in that: include: A main body, wherein a gas accommodating chamber is provided in the main body, and the main body is provided with a gas outlet communicating with the gas accommodating chamber; a combustion net, the combustion net being provided on the main body and the opening of the gas outlet facing the combustion net, the combustion net being provided with a plurality of combustion mesh holes, and the combustion net being configured such that the equivalent diameter of the combustion mesh holes is ≤0.8 mm; The anti-backfire member is arranged side by side with the combustion net in the thickness direction of the combustion net, and the anti-backfire member meets at least one of the following conditions: The flashback prevention member is configured to have thermal insulation properties and is located between the combustion net and the main body; The anti-backfire member exchanges heat with the combustion network to dissipate heat from the combustion network.

2. The burner according to claim 1, characterized in that The anti-backfire component is a heat-insulating material component filled between the combustion net and the main body.

3. The burner according to claim 2, characterized in that The anti-tempering component is thermal insulation wool or quartz wool.

4. The burner according to claim 1, characterized in that The flashback prevention member is in contact with the combustion network point.

5. The burner according to claim 4, characterized in that The tempering prevention component is a metal component and is formed into a mesh structure.

6. The burner according to claim 5, characterized in that The anti-backfire member includes a plurality of anti-backfire meshes, and the anti-backfire member is configured to satisfy the following condition: 0.8 mm < equivalent diameter of each anti-backfire mesh ≤ 3 mm.

7. The burner according to claim 6, characterized in that The thickness of the tempering prevention member is 0.15 mm to 2 mm.

8. The burner according to claim 5, characterized in that The anti-backfire component is a wave net.

9. The burner according to claim 5, characterized in that The anti-backfire component 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 ranges from 1 to 60.

10. The burner according to claim 1, characterized in that There are multiple anti-backfire members, and the anti-backfire members are distributed on both sides of the combustion net; or A plurality of flashback prevention members are located on the same side of the combustion net.

11. The burner according to claim 1, characterized in that The surface porosity of the combustion net is ≥40%.

12. The burner according to claim 1, characterized in that The thickness of the combustion net ranges from 0.1 mm to 0.5 mm.

13. The burner according to claim 1, characterized in that The combustion mesh is constructed to satisfy: 0.05 mm ≤ the equivalent diameter of each combustion mesh hole ≤ 0.3 mm.

14. The burner according to any one of claims 1 to 13, characterized in that The subject includes: case; The guide plate is connected to the shell, and 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.

15. The burner according to claim 14, characterized in that The plurality of guide holes are evenly distributed on the guide plate.

16. The burner according to claim 14, characterized in that Also includes: A gas pipe is connected to the shell and communicates with the gas accommodating chamber, and the gas pipe is used to input the combustible gas into the gas accommodating chamber.

17. The burner according to claim 16, characterized in that The gas pipe extends into the gas accommodating cavity, and a plurality of exhaust holes are provided on the surface of the gas pipe.

18. A cooking utensil, characterized in that: include: A burner as claimed in any one of claims 1 to 17.

19. The cooking appliance according to claim 18, wherein The cooking appliance includes a pizza oven.

Images