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 radiation layer is arranged on the main body, an opening of the gas outlet faces the radiation layer, the radiation layer comprises a first area and a second area, the second area is arranged around the first area, the first area is not provided with through holes, and the second area is provided with a plurality of combustion meshes. When the burner provided by the utility model works, the temperature of the central area of the radiation layer is reduced, the baking requirement of a pizza is met, the risk that the central area of the pizza is burnt is reduced, and the cooking effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of cooking equipment, especially to a burner and a cooking utensil. BACKGROUND

[0002] In the related art, a cooking device is provided with a burner, the burner includes a combustion net, and fuel gas can be combusted in the combustion net, a flame formed by combustion heats the combustion net, and the heated combustion net can form infrared heat radiation to heat food.

[0003] However, when a user uses the above cooking device to bake a pizza, the middle area of the pizza is prone to be overcooked, and the cooking effect is poor. SUMMARY

[0004] The utility model aims at at least solving one of the technical problems existing in the prior art. To this end, the utility model provides a burner, when the burner works, the temperature of the central area of the radiation layer is reduced, the baking demand of the pizza is met, the risk of overcooking of the central area of the pizza is reduced, and the cooking effect is improved.

[0005] The utility model further provides a cooking utensil comprising the above burner.

[0006] According to the burner provided in the utility model, when the burner works, the temperature of the central area of the radiation layer is reduced, the baking demand of the pizza is met, the risk of overcooking of the central area of the pizza is reduced, and the cooking effect is improved.

[0007] According to the burner provided in the utility model, when the burner works, the temperature of the central area of the radiation layer is reduced, the baking demand of the pizza is met, the risk of overcooking of the central area of the pizza is reduced, and the cooking effect is improved.

[0008] In some embodiments, the first area occupies an area S1, the second area occupies an area S2, and the burner satisfies S2 / S1≥1.25.

[0009] In some embodiments, the first area is formed in a circular shape, the diameter of the first area is R1, and R1≥160mm.

[0010] In some embodiments, the second area is formed in a circular ring shape and sheaths the first area.

[0011] In some embodiments, the radiation layer is configured to satisfy 4mm≤equivalent diameter of each combustion net hole≤6mm.

[0012] In some embodiments, the second region comprises: a first combustion portion and a second combustion portion, an equivalent diameter of the combustion mesh hole in the first combustion portion is less than an equivalent diameter of the combustion mesh hole in the second combustion portion.

[0013] In some embodiments, the radiation layer is configured to satisfy: an equivalent diameter of each of the combustion mesh holes is less than or equal to 0.8 mm.

[0014] In some embodiments, the main body comprises: a shell; a flow guide plate connected to the shell, the shell and the flow guide plate enclosing the combustible gas containing cavity, the flow guide plate having a plurality of flow guide holes for discharging the combustible gas in the combustible gas containing cavity to the second region.

[0015] In some embodiments, the burner further comprises: a combustible gas pipe connected to the shell and in communication with the combustible gas containing cavity, the combustible gas pipe being used for inputting the combustible gas into the combustible gas containing cavity.

[0016] In some embodiments, the burner further comprises: an anti-backfire member arranged side by side with the radiation layer in the thickness direction of the radiation layer, the anti-backfire member satisfying at least one of the following conditions: the anti-backfire member is configured to have thermal insulation and is located between the radiation layer and the main body; the anti-backfire member exchanges heat with the radiation layer to dissipate heat from the radiation layer.

[0017] In some embodiments, the anti-backfire member is in point contact with the radiation layer.

[0018] In some embodiments, the anti-backfire member is a metal member and is formed in a mesh structure.

[0019] In some embodiments, the anti-backfire member comprises a plurality of anti-backfire mesh holes, and the anti-backfire member is configured to satisfy: 0.8 mm < an equivalent diameter of each of the anti-backfire mesh holes ≤ 3 mm.

[0020] In some embodiments, the anti-backfire member is a plurality of anti-backfire members, and the radiation layer is distributed with the anti-backfire members on both sides of the radiation layer; or, a plurality of the anti-backfire members are located on the same side of the radiation layer.

[0021] The cooking appliance according to the embodiments of the present application comprises the burner as described in the above technical solutions.

[0022] In some embodiments, the cooking appliance comprises a pizza oven.

[0023] In some embodiments, the cooking device comprises a holding cavity for holding food, the holding cavity having a taking and placing opening for taking and placing food; the second region comprises: a first combustion part and a second combustion part, an equivalent diameter of the combustion mesh hole in the first combustion part is smaller than an equivalent diameter of the combustion mesh hole in the second combustion part, and the first combustion part is located on a side of the second combustion part facing the taking and placing opening.

[0024] Additional aspects and advantages of the present application will be apparent from the following description of the application, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0025] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, taken in conjunction with the accompanying drawings, in which:

[0026] Figure 1 is a schematic view of a burner according to an embodiment of the present application;

[0027] Figure 2 is Figure 1 is a schematic view of an explosion of a burner in Figure 1 ;

[0028] Figure 3 is a schematic view of an explosion of a burner in Figure 1 ; Figure 2

[0029] Figure 4 is a schematic view of a second region of a radiation layer according to an embodiment of the present application;

[0030] Figure 5 is a schematic view of a calculation result of quenching diameters under different temperatures and equivalent ratios;

[0031] Figure 6 is a schematic view of combustion of gas at a radiation layer;

[0032] Figure 7 is a schematic view of effect comparison of embodiments of combustion mesh holes with different equivalent diameters;

[0033] Figure 8 is a schematic view of cooperation of a wave-shaped anti-backfire member and a radiation layer Figure 1 ;

[0034] Figure 9 is a schematic view of cooperation of a wave-shaped anti-backfire member and a radiation layer Figure 2 ;

[0035] Figure 10 is a sectional view of a burner in Figure 1 ;

[0036] Figure 11 is​Figure 10 Enlarged view of portion A;

[0037] Figure 12 is a schematic view of a burner according to further embodiments of the present application;

[0038] Figure 13 is a schematic view of a burner according to yet further embodiments of the present application;

[0039] Figure 14 is a comparison diagram of combustion effect of some embodiments of the present application and related art.

[0040] Fig. 1 is a schematic view of a burner according to embodiments of the present application; Fig. 2 is a schematic view of a burner according to further embodiments of the present application; Fig. 3 is a schematic view of a burner according to yet further embodiments of the present application; Fig. 4 is a comparison diagram of combustion effect of some embodiments of the present application and related art. DETAILED DESCRIPTION

[0041] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like designations indicate the same or like elements or features that have the same or similar function(s). The embodiments described below are examples of how the present application can be made and used, and are not intended to limit the present application, unless otherwise explicitly indicated herein.

[0042] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, features limited as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0043] In the description of the utility model, it is to be explained that, unless there is definite stipulation and limitation, the term "installation", "linkage", "connection" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can indirectly connect through intermediate medium, can be two element internal communication.For ordinary skilled in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to specific circumstances.

[0044] Reference is made below Figures 1-14 The burner 100 according to the embodiments of the utility model is described.

[0045] Reference is made below Figure 1 、 Figure 2 and Figure 3 The burner 100 according to the embodiments of the utility model comprises a main body 110 and a radiation layer 120, the main body 110 is provided with a gas containing cavity 111, the main body 110 is provided with a gas outlet communicated with the gas containing cavity 111, the radiation layer 120 is arranged on the main body 110 and the opening of the gas outlet faces the radiation layer 120, the radiation layer 120 comprises a first area 121 and a second area 122, the second area 122 is arranged around the first area 121, the first area 121 is not provided with a through hole, and the second area 122 is provided with a plurality of combustion mesh holes.

[0046] The gas containing cavity 111 is used for containing combustible gas, the combustible gas in the gas containing cavity 111 can flow to the radiation layer 120 through the gas outlet, and then the combustible gas flows to the side, away from the gas containing cavity 111, of the second area 122 through the plurality of combustion mesh holes of the second area 122, so that the combustible gas can be combusted on the side, away from the gas containing cavity 111, of the second area 122, the flame formed by combustion heats the radiation layer 120, and the heated radiation layer 120 can form infrared thermal radiation to heat external objects. Because the first area 121 is not provided with a through hole, the flame is only distributed on the second area 122, compared with the related art, the temperature of the central area of the radiation layer 120 is effectively reduced.

[0047] When a user uses the burner 100 in the embodiments of the utility model to bake a pizza, the first area 121 of the radiation layer 120 can be directly opposite the central area of the pizza. Because the temperature of the first area 121 is reduced, the baking demand of the pizza is met when the pizza is baked, the risk of over-burning of the central area of the pizza is reduced, and the cooking effect is improved.

[0048] The burner 100 according to the embodiments of the utility model, when the burner 100 works, the temperature of the central area of the radiation layer 120 is reduced, the baking demand of the pizza is met, the risk of over-burning of the central area of the pizza is reduced, and the cooking effect is improved.

[0049] Referring to Figure 1 , Figure 12 and Figure 13 In some embodiments, the first area 121 occupies an area S1, the second area 122 occupies an area S2, and the burner 100 satisfies S2 / S1≥1.25.

[0050] If S2 / S1 is less than 1.25, the first area 121 will occupy too large an area, the temperature of the first area 121 will decrease too much, the temperature of the second area 122 will be much higher than that of the first area 121, and the situation that the pizza is burnt on the outside and undercooked in the center may occur, affecting the cooking effect.

[0051] In the embodiments of the utility model, the burner 100 satisfies S2 / S1≥1.25, which limits the temperature difference range between the first area 121 and the second area 122, reduces the risk that the pizza is burnt on the outside and undercooked in the center, and improves the cooking effect.

[0052] In some further embodiments, the burner 100 further satisfies 1.25≤S2 / S1≤1.55.

[0053] If S2 / S1 is greater than 1.55, the first area 121 will occupy a smaller area, the temperature of the first area 121 will decrease less, and there is still a risk of overcooking in the center of the pizza.

[0054] In the embodiments of the utility model, the burner 100 satisfies 1.25≤S2 / S1≤1.55, which limits the temperature difference range between the first area 121 and the second area 122, reduces the risk that the pizza is burnt on the outside and undercooked in the center, and also reduces the risk of overcooking in the center of the pizza, effectively improving the cooking effect.

[0055] In some specific embodiments, the value of S2 / S1 is any one of 1.25, 1.3, 1.4, 1.55 or a range value between any two of them.

[0056] In some embodiments, the first area 121 is formed in a circular shape, the diameter of the first area 121 is R1, and R1≥160mm.

[0057] If the diameter of the first area 121 is less than 160mm, the first area 121 will occupy a smaller area, the temperature of the first area 121 will decrease less, and there is still a risk of overcooking in the center of the pizza.

[0058] In the embodiments of the utility model, the diameter R1 of the first area 121 is ≥160mm, which reduces the risk of overcooking in the center of the pizza and effectively improves the cooking effect.

[0059] In some embodiments, the first region 121 can have a diameter R1 of 160 mm, 180 mm, 200 mm, 240 mm, or other sizes.

[0060] In some further embodiments, the second region 122 is formed in a circular ring shape and covers the first region 121.

[0061] With the above technical solution, the temperature distribution of the second region 122 is more uniform in the circumferential direction of the first region 121, and the cooking effect of the burner 100 is improved.

[0062] In some preferred embodiments, the first region 121 is formed in a circular shape, the first region 121 has a diameter R1 of 160 mm, the second region 122 is formed in a circular ring shape and covers the first region 121, and the second region 122 has an outer diameter R2 of 240 mm.

[0063] In the embodiments of the present application, the second region 122 has a fast temperature rising speed, and the temperature of the first region 121 is lower than that of the second region 122, effectively improving the cooking effect of the burner 100.

[0064] In some embodiments, the radiation layer 120 is configured to satisfy: 4 mm≤equivalent diameter of each combustion mesh hole≤6 mm.

[0065] It should be noted that the combustion mesh hole can be a circular hole, or a non-circular hole such as a rhombus, a hexagon, or other non-circular holes. When the combustion mesh hole is a non-circular hole, the combustion mesh hole can be equivalent to a circular hole with the same opening area, so the opening size of the combustion mesh hole can be defined by the equivalent diameter of the combustion mesh hole.

[0066] Because the flame has the property of propagating along the flow path of the gas, if the flame propagates to the gas containing cavity 111, the flame will burn in the gas containing cavity 111, causing a backfire phenomenon. If the equivalent diameter of the combustion mesh hole is greater than 6 mm, the risk of backfire will increase; if the equivalent diameter of the combustion mesh hole is less than 4 mm, the gas flow resistance will increase, affecting the combustion efficiency of the gas.

[0067] In the embodiments of the present application, 4 mm≤equivalent diameter of each combustion mesh hole≤6 mm, which not only reduces the risk of backfire of the flame, ensures the combustion efficiency of the gas, and improves the safety and reliability of the use of the burner 100.

[0068] In some embodiments, the equivalent diameter of each combustion mesh hole can be any one of 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, or a range value between any two of them.

[0069] Referring to Figure 13In some embodiments, the second area 122 comprises: a first combustion part 1221 and a second combustion part 1222, an equivalent diameter of the combustion mesh holes in the first combustion part 1221 is smaller than an equivalent diameter of the combustion mesh holes in the second combustion part 1222.

[0070] Through the above technical solution, the temperature of the first combustion part 1221 can be smaller than the temperature of the second combustion part 1222. In some application scenarios, the burner is arranged in a holding cavity of a cooking device, the holding cavity has a taking and placing opening for taking and placing food, the first combustion part 1221 is located on a side of the second combustion part 1222 facing the taking and placing opening, the temperature of the side of the burner 100 close to the taking and placing opening is reduced, thereby reducing the temperature outside the cooking device and improving the safety of using the cooking device.

[0071] With reference to Figure 14 , the radiation layer 120 in the first embodiment is provided with the first area 121; compared with the first embodiment, the second area 122 in the second embodiment is divided into the first combustion part 1221 and the second combustion part 1222, and the area of the first area 121 in the second embodiment is smaller than the area of the first area 121 in the first embodiment; the area of the first area 121 in the third embodiment is smaller than the area of the first area 121 in the second embodiment; the area of the first area 121 in the fourth embodiment is smaller than the area of the first area 121 in the third embodiment.

[0072] It can be known from Figure 14 that, compared with the related art, the radiation layer 120 in the first embodiment, the second embodiment, the third embodiment and the fourth embodiment in the utility model can reduce the temperature difference between the central area and the periphery of the radiation layer 120. When the burner 100 works, the temperature of the central area of the radiation layer 120 is reduced, the baking demand of the pizza is met, the risk of over-burning of the central area of the pizza is reduced, and the cooking effect is improved.

[0073] With reference to Figure 1 , Figure 2 and Figure 3 , in some embodiments, the burner 100 comprises: a main body 110 and a radiation layer 120, the main body 110 is provided with a gas containing cavity 111, the main body 110 is provided with a gas outlet communicating with the gas containing cavity 111, the radiation layer 120 is arranged on the main body 110 and the opening of the gas outlet faces the radiation layer 120, the second area 122 of the radiation layer 120 is provided with a plurality of combustion mesh holes, and the radiation layer 120 is configured to have an equivalent diameter of the combustion mesh holes ≤0.8mm.

[0074] The gas containing cavity 111 is used for containing combustible gas, the combustible gas in the gas containing cavity 111 can flow to the radiation layer 120 through the gas outlet, and then the combustible gas flows to the side of the radiation layer 120 away from the gas containing cavity 111 through the plurality of combustion mesh holes on the second area 122, so that the combustible gas can be combusted on the side of the radiation layer 120 away from the gas containing cavity 111, and the flame formed by the combustion heats the radiation layer 120, and the radiation layer 120 can be heated to above 800 DEG C, and the heated radiation layer 120 can form infrared thermal radiation to heat external objects.

[0075] It should be noted that, because the flame has the property of propagating along the flow path of the combustible gas, if the flame propagates to the gas containing cavity 111, the flame will burn in the gas containing cavity 111, and the backfire phenomenon occurs, and this backfire phenomenon in which the flame directly propagates to the gas containing cavity 111 is called dynamic backfire. In order to avoid the occurrence of dynamic backfire, in the embodiment of the utility model, the equivalent diameter of the combustion mesh hole is ≤0.8mm.

[0076] It should be noted that the combustion mesh hole can be a circular hole, or a rhombus, hexagon or other non-circular hole, when the combustion mesh hole is a non-circular hole, the combustion mesh hole can be equivalent to a circular hole with the same opening area, so the opening size of the combustion mesh hole can be limited by the equivalent diameter of the combustion mesh hole.

[0077] The calculation formula of the quenching diameter dm is

[0078] Wherein, p e is the Peclét number, which is a key parameter for determining the combustion stability, and Pe=65 is selected; λ g is the thermal conductivity of the combustion mesh hole wall surface; S L is the combustion velocity; c p is the specific heat capacity at constant pressure; and ρ g is the gas density.

[0079] Wherein, the thermal conductivity λ g of the combustion mesh hole wall surface is determined by the material of the radiation layer 120, the combustion velocity S L is determined by the type of the combustible gas and the premixed ratio with air; the specific heat capacity c p at constant pressure is affected by temperature; and the gas density ρ g is affected by the equivalence ratio, and reference is made to Figure 5 , Figure 5 is a schematic diagram of the calculation results of the quenching diameter under different temperatures and equivalence ratios, and the calculation selects dm≤0.8mm, that is, the equivalent diameter of the combustion mesh hole is ≤0.8mm.

[0080] In this embodiment of the invention, by limiting the equivalent diameter of the combustion mesh, the risk of flames 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 quench. That is, the combustion mesh with a smaller equivalent diameter can prevent the flame from propagating into the gas containing cavity 111. In other words, the flame cannot pass through the combustion mesh and can only burn on the side of the radiation layer 120 opposite to the gas containing cavity 111. (Refer to...) Figure 4 and Figure 6 In this embodiment of the invention, the equivalent diameter of the combustion mesh is ≤0.8mm, preventing the flame from passing through the combustion mesh and thus avoiding the flame propagation 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 burn stably at the opening of the combustion mesh away from the gas receiving chamber 111, effectively improving the reliability of the burner 100.

[0081] Reference Figure 3 , Figure 10 and Figure 11 In this embodiment of the utility model, the burner 100 further includes a backfire prevention element 130. In the thickness direction of the radiation layer 120, the backfire prevention element 130 is arranged side by side with the radiation layer 120. The backfire prevention element 130 is configured to have heat insulation properties and is located between the radiation layer 120 and the main body 110.

[0082] Because the burning flame heats the radiation layer 120, the heat from the radiation layer 120 can spread toward the main body 110, causing the temperature of the main body 110 to gradually rise. If the temperature inside the gas containment cavity 111 rises to the auto-ignition point of the gas, it will ignite the gas inside the gas containment cavity 111, causing a backfire phenomenon. This backfire phenomenon is called static backfire.

[0083] In this embodiment of the invention, by providing a backfire prevention component 130 between the radiation layer 120 and the main body 110, and by providing heat insulation, the backfire prevention component 130 can block the heat transmitted from the radiation layer 120 toward the main body 110, thereby reducing the temperature inside the gas containment cavity 111 and effectively reducing the risk of static backfire.

[0084] In the above embodiments, the backfire prevention element 130 is configured to have thermal insulation properties and is located between the radiant layer 120 and the main body 110. In other embodiments, the backfire prevention element 130 may also be configured to exchange heat with the radiant layer 120 to dissipate heat from the radiant layer 120. Specifically, the backfire prevention element 130 is disposed on the side of the radiant layer 120 away from the gas receiving cavity 111. When the burner 100 is working, the flame heats the radiant layer 120, and the backfire prevention element 130 exchanges heat with the radiant layer 120 to improve the heat dissipation efficiency of the radiant layer 120, thereby reducing the temperature of the radiant layer 120 on the side facing the gas receiving cavity 111, thereby reducing the risk of static backfire.

[0085] In yet some embodiments, the anti-backfire member 130 can be provided in two, one of which is configured to have heat insulation and is located between the radiation layer 120 and the main body 110, and the other of which is provided on the side of the radiation layer 120 away from the gas containing cavity 111 for dissipating heat from the radiation layer 120.

[0086] In the two anti-backfire members 130 in the embodiments of the utility model, one is used for blocking the heat transfer towards the gas containing cavity 111, and the other is used for improving the heat dissipation efficiency of the radiation layer 120, effectively reducing the temperature in the gas containing cavity 111 and effectively reducing the risk of static backfire.

[0087] According to the burner 100 in the embodiments of the utility model, 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 spreading to the gas containing cavity 111 through the combustion mesh, and the dynamic backfire is avoided, the flame cannot pass through the combustion mesh and can only burn on the side of the radiation layer 120 away from the gas containing cavity 111, and the reliability of the burner 100 is improved; the burner 100 is provided with the anti-backfire member 130, the anti-backfire member 130 is used for blocking the heat transfer towards the gas containing cavity 111 and / or for improving the heat dissipation efficiency of the radiation layer 120, the risk of static backfire is effectively reduced, and the reliability of the burner 100 is further improved.

[0088] In some further embodiments, 0.05mm≤the equivalent diameter of the combustion mesh≤0.8mm.

[0089] If the equivalent diameter of the combustion mesh is greater than 0.8mm, the flame may pass through the combustion mesh when spreading, and the dynamic backfire phenomenon occurs, and if the equivalent diameter of the combustion mesh is less than 0.05mm, the resistance of the gas passing through the radiation layer 120 is increased, the combustion efficiency is affected, and the heating effect of the burner 100 is affected. In the embodiments of the utility model, the equivalent diameter of the combustion mesh is limited to 0.05mm-0.8mm, so that the gas can pass through the radiation layer 120 smoothly and burn on the side of the radiation layer 120 away from the gas containing cavity 111, the heating effect of the burner 100 is ensured, the possibility of the flame passing through the combustion mesh is avoided, and the risk of dynamic backfire is avoided.

[0090] In some specific embodiments, the equivalent diameter of the combustion mesh can be any one point value or a range value between any two of 0.05mm, 0.25mm, 0.35mm, 0.55mm, 0.65mm, 0.75mm and 0.8mm.

[0091] In some preferred embodiments, 0.05mm≤the equivalent diameter of the combustion mesh≤0.3mm.

[0092] With reference to Figure 7 It can be known that, in the embodiment where the equivalent diameter of the combustion mesh is less than or equal to 0.8 mm, the flame can be stably combusted in the radiation layer 120, and the backfire phenomenon does not occur. Figure 7 It can be known that, in the embodiment where the equivalent diameter of the combustion mesh is less than or equal to 0.3 mm, the flame can be stably combusted in the radiation layer 120, and the combustion mesh as a whole is heated more uniformly, the heat radiation generated by the radiation layer 120 is also more uniform, and the heating effect of the burner is effectively improved.

[0093] In some embodiments, the surface porosity of the radiation layer 120 is greater than or equal to 40%.

[0094] It should be noted that the surface porosity of the radiation layer 120 refers to the area ratio of the combustion mesh holes in a unit area. Because the multiple combustion mesh holes on the radiation layer 120 are unevenly distributed, the present application limits the surface porosity of the radiation layer 120, so that the gas is more uniformly distributed on the radiation layer 120, the temperature difference at different positions of the radiation layer 120 is reduced, and the heating effect of the burner 100 is improved.

[0095] In some further embodiments, the thickness of the radiation layer 120 ranges from 0.1 mm to 0.5 mm.

[0096] If the thickness of the radiation layer 120 is less than 0.1 mm, the strength of the radiation layer 120 will be affected, and the radiation layer 120 is more likely to deform. If the thickness of the radiation layer 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 also increases the cost of the burner 100. In the embodiments of the present application, the thickness of the radiation layer 120 ranges from 0.1 mm to 0.5 mm, which not only ensures the strength of the radiation layer 120, but also does not cause the overall thickness of the burner 100 to be too thick, and also reduces the cost of the burner 100.

[0097] In some specific embodiments, the thickness of the radiation layer 120 is any one of 0.1 mm, 0.25 mm, 0.38 mm, 0.5 mm or a range value between any two of them.

[0098] In some embodiments, the backfire prevention member 130 has heat insulation and is located between the radiation layer 120 and the main body 110, and the backfire prevention member 130 is in point contact with the radiation layer 120.

[0099] In the embodiments of the present application, the backfire prevention member 130 is in point contact with the radiation layer 120, the contact thermal resistance is large, the heat transfer efficiency from the radiation layer 120 to the backfire prevention member 130 is reduced, and the heat on the radiation layer 120 is difficult to continue to be transferred to the gas in the gas containing cavity 111 through the backfire prevention member 130, thereby avoiding the temperature in the gas containing cavity 111 from rising to the natural point temperature of the gas.

[0100] It should be noted that the point contact of the anti-backfire piece 130 and the radiation layer 120 means that the part of the anti-backfire piece 130 in contact with the radiation layer 120 is in point contact, and there can be multiple contact points between the anti-backfire piece 130 and the radiation layer 120, which ensures the reliability of the connection between the anti-backfire piece 130 and the radiation layer 120.

[0101] In some embodiments, the anti-backfire piece 130 is a metal piece, the anti-backfire piece 130 is formed into a mesh structure, the anti-backfire piece 130 is located between the radiation layer 120 and the main body 110, and the anti-backfire piece 130 is in point contact with the radiation layer 120.

[0102] In the embodiments of the utility model, the anti-backfire piece 130 is simple in structure, easy to install, and reduces the cost of the burner 100. In addition, the anti-backfire piece 130 is constructed as a mesh structure of metal, so that the anti-backfire piece 130 can also support the radiation layer 120. Understandably, if the radiation layer 120 deforms due to excessive temperature, it will cause the flame on the surface of the radiation layer 120 to be unstable, thereby affecting the heating effect. In order to avoid deformation of the radiation layer 120, the embodiments of the utility model can support the radiation layer 120 through the anti-backfire piece 130 to avoid deformation of the radiation layer 120. The anti-backfire piece 130 can be made of a material with high strength and high temperature resistance to improve the stability of the radiation layer 120.

[0103] In some further embodiments, the anti-backfire piece 130 is located between the radiation layer 120 and the main body 110, the anti-backfire piece 130 is a metal piece, the anti-backfire piece 130 is formed into a mesh structure, the anti-backfire piece 130 includes a plurality of anti-backfire mesh holes, and the anti-backfire piece 130 is configured to satisfy: 0.8mm < equivalent diameter of each anti-backfire mesh hole ≤ 3mm.

[0104] When the burner 100 is working, the gas in the gas containing cavity 111 flows towards the radiation layer 120 and passes through the anti-backfire mesh hole and the combustion mesh hole in turn to the side of the radiation layer 120 away from the gas containing cavity 111, and burns on the side of the radiation layer 120 away from the gas containing cavity 111, the flame formed by the burning heats the radiation layer 120, and the heated radiation layer 120 can form infrared heat radiation to heat external objects.

[0105] If the equivalent diameter of the anti-backfire mesh hole is less than 0.8 mm, the resistance of the gas passing through the anti-backfire device 130 is increased, which affects the combustion efficiency; if the equivalent diameter of the anti-backfire mesh hole is greater than 3 mm, the number of contact points between the anti-backfire device 130 and the radiation layer 120 is reduced, which affects the supporting effect of the anti-backfire device 130 on the radiation layer 120. In the embodiment of the utility model, 0.8mm < equivalent diameter of each anti-backfire mesh hole ≤ 3mm, the resistance of the gas passing through the anti-backfire device 130 is reduced, so that the combustible gas can flow smoothly to the radiation layer 120, so that the burner 100 can operate normally, and at the same time, the supporting effect of the anti-backfire device 130 on the radiation layer 120 is ensured, and the risk of deformation of the radiation layer 120 is reduced.

[0106] It should be noted that the anti-backfire mesh hole can be a circular hole, or a rhombus, hexagon or other non-circular hole, when the anti-backfire mesh hole is a non-circular hole, the anti-backfire mesh hole can be equivalent to a circular hole with the same opening area, so the opening size of the anti-backfire mesh hole can be limited by the equivalent diameter of the anti-backfire mesh hole.

[0107] In some specific embodiments, the equivalent diameter of the anti-backfire mesh hole is any one of 0.9 mm, 1.2 mm, 1.6 mm, 1.9 mm, 2.2 mm, 2.7 mm, 3 mm or a range value between any two of them.

[0108] In some embodiments, the anti-backfire device 130 includes a plurality of anti-backfire mesh holes, and the ratio of the equivalent diameter of the anti-backfire mesh hole to the equivalent diameter of the combustion mesh hole is in the range of 1 to 60.

[0109] If the ratio of the equivalent diameter of the anti-backfire mesh hole to the equivalent diameter of the combustion mesh hole is less than 1, it means that the opening area of the anti-backfire mesh hole is smaller than the opening area of the combustion mesh hole, which increases the resistance of the gas passing through the anti-backfire device 130, affecting the combustion efficiency; if the ratio of the equivalent diameter of the anti-backfire mesh hole to the equivalent diameter of the combustion mesh hole is greater than 60, it will cause the opening area of the anti-backfire mesh hole to be too large, which reduces the number of contact points between the anti-backfire device 130 and the radiation layer 120, affecting the supporting effect of the anti-backfire device 130 on the radiation layer 120. In the embodiment of the utility model, the ratio of the equivalent diameter of the anti-backfire mesh hole to the equivalent diameter of the combustion mesh hole is in the range of 1 to 60, which reduces the resistance of the gas passing through the anti-backfire device 130, so that the combustible gas can flow smoothly to the radiation layer 120, so that the burner 100 can operate normally, and at the same time, the supporting effect of the anti-backfire device 130 on the radiation layer 120 is ensured, and the risk of deformation of the radiation layer 120 is reduced.

[0110] In some specific embodiments, the ratio of the equivalent diameter of the anti-backfire mesh hole to the equivalent diameter of the combustion mesh hole is any one of 1.1, 2, 8, 19, 22, 47, 60 or a range value between any two of them.

[0111] In some embodiments, the surface porosity of the anti-backfire member 130 is greater than or equal to 40%.

[0112] It should be noted that the surface porosity of the anti-backfire member 130 refers to the area ratio of the anti-backfire mesh holes in a unit area. Because the anti-backfire mesh holes on the anti-backfire member 130 are unevenly distributed, the present application limits the surface porosity of the anti-backfire member 130 to avoid the anti-backfire member 130 affecting the uniformity of the gas distribution, so that the gas is more evenly distributed on the radiation layer 120, the temperature difference between different positions of the radiation layer 120 is reduced, and the heating effect of the burner 100 is improved.

[0113] In some embodiments, the thickness of the anti-backfire member 130 is 0.15mm to 2mm.

[0114] If the thickness of the anti-backfire member 130 is less than 0.15mm, the strength of the anti-backfire member 130 will be affected, and the anti-backfire member 130 is prone to deformation. If the thickness of the anti-backfire member 130 is greater than 2mm, the overall thickness of the burner 100 will be increased, which is not conducive to the miniaturization of the burner 100, and also increases the cost of the burner 100. In the present application, the thickness of the anti-backfire member 130 is 0.15mm to 2mm, which ensures the strength of the anti-backfire member 130 and does not cause the overall thickness of the burner 100 to be too thick, thereby reducing the cost of the burner 100.

[0115] In some specific embodiments, the thickness of the anti-backfire member 130 is any one of 0.15mm, 0.35mm, 0.8mm, 1.1mm, 1.5mm, 2mm or a range value between any two of them.

[0116] In some embodiments, the burner 100 comprises: a main body 110 comprising a gas containing cavity 111, the gas containing cavity 111 being used to contain combustible gas; a radiation layer 120, an opening of the gas containing cavity 111 facing the radiation layer 120 so that the combustible gas can burn on the surface of the radiation layer 120, the radiation layer 120 facing the outside to radiate heat energy to the outside; an anti-backfire member 130 installed between the radiation layer 120 and the main body 110, the anti-backfire member 130 being used to block the transmission of heat towards the gas containing cavity 111, the anti-backfire member 130 also being used to support the radiation layer 120, the anti-backfire member 130 being a mesh structure and the size of the mesh holes of the anti-backfire member 130 being greater than the size of the mesh holes of the radiation layer 120.

[0117] The burner 100 can be used in a cooking utensil, and the burner 100 can heat the cooking utensil to heat and cook food materials when the burner 100 operates.

[0118] Specifically, the combustible gas can be stored in the gas containing cavity 111, and the opening of the gas containing cavity 111 faces the radiation layer 120, so that the combustible gas can flow to the radiation layer 120. The combustible gas burns on the radiation layer 120, and the temperature of the flame burning is above 800 DEG C, so that the radiation layer 120 is heated by the flame to form infrared heat radiation, and the radiation layer 120 can radiate heat energy.

[0119] Further, the utility model discloses a backfire prevention piece 130 in the burner 100 still is provided, and the backfire prevention piece 130 is used for supporting the radiation layer 120. Understandably, if the radiation layer 120 deforms, then the flame on the surface of the radiation layer 120 will be unstable, and then the heating effect is affected. In order to avoid the deformation of the radiation layer 120, the backfire prevention piece 130 is arranged in the burner 100 of the utility model, and the backfire prevention piece 130 can support the radiation layer 120 to avoid the deformation of the radiation layer 120. The backfire prevention piece 130 can be made of high-strength and high-temperature-resistant material to improve the stability of the radiation layer 120.

[0120] Further, since the backfire prevention piece 130 is located between the main body 110 and the radiation layer 120, the combustible gas needs to pass through the backfire prevention piece 130 to flow to the radiation layer 120, in order to make the combustible gas flow smoothly through the backfire prevention piece 130, the size of the mesh of the backfire prevention piece 130 is greater than the size of the mesh of the radiation layer 120. In this way, the resistance of the backfire prevention piece 130 to the combustible gas can be reduced, so that the combustible gas can flow smoothly to the radiation layer 120, and the burner 100 can operate normally.

[0121] By arranging the backfire prevention piece 130 for supporting the radiation layer 120 in the burner 100, the deformation of the radiation layer 120 can be avoided, the stability of the radiation layer 120 is improved, and then the flame can be stably burned on the radiation layer 120. By setting the size of the mesh of the backfire prevention piece 130 to be greater than the size of the mesh of the radiation layer 120, the resistance of the backfire prevention piece 130 to the combustible gas can be reduced, so that the combustible gas can flow smoothly to the radiation layer 120, and the burner 100 can operate normally.

[0122] In some embodiments, optionally, as Figure 1 ,Figure 2 and Figure 3 As shown in FIG. 1, the mesh number of the anti-backfire member 130 is less than the mesh number of the radiation layer 120.

[0123] In this embodiment, the radiation layer 120 and the anti-backfire member 130 are further limited. Specifically, the mesh number of the anti-backfire member 130 is less than the mesh number of the radiation layer 120. By setting the mesh number of the anti-backfire member 130 to be less than the mesh number of the radiation layer 120, the mesh size of the anti-backfire member 130 can be increased, thereby reducing the resistance of the anti-backfire member 130 to the combustible gas, allowing the combustible gas to flow smoothly to the radiation layer 120, and allowing the burner 100 to operate normally.

[0124] In some embodiments, optionally, the mesh number of the radiation layer 120 ranges from 40 mesh to 200 mesh, and the mesh number of the anti-backfire member 130 ranges from 5 mesh to 40 mesh.

[0125] In this embodiment, the mesh number of the radiation layer 120 and the mesh number of the anti-backfire member 130 are limited, specifically, the mesh number of the radiation layer 120 ranges from 40 mesh to 200 mesh. Understandably, the radiation layer 120 is used to burn the combustible gas to generate a flame, which requires the flame to be stably distributed and burned on the radiation layer 120, so the mesh number of the radiation layer 120 cannot be too small, otherwise it will cause uneven flame, therefore the mesh number of the radiation layer 120 is set in the range of 40 mesh to 200 mesh to ensure that the flame on the radiation layer 120 remains stable.

[0126] Further, the mesh number of the anti-backfire member 130 ranges from 5 mesh to 40 mesh. Since the anti-backfire member 130 is arranged between the radiation layer 120 and the gas containing cavity 111, the combustible gas needs to pass through the anti-backfire member 130 to reach the radiation layer 120, so the anti-backfire member 130 needs to be set as a mesh structure with large mesh size and small mesh number, therefore the mesh number of the anti-backfire member 130 is set in the range of 5 mesh to 40 mesh to ensure that the combustible gas can flow smoothly through the anti-backfire member 130.

[0127] In some embodiments, optionally, the thickness of the radiation layer 120 ranges from 0.1 mm to 0.5 mm.

[0128] In this embodiment, the thickness of the radiation layer 120 is limited, specifically, the thickness of the radiation layer 120 ranges from 0.1 mm to 0.5 mm. In this way, the strength of the radiation layer 120 can be ensured to meet the use requirements, while avoiding the problem of increasing the volume of the product due to the excessive thickness of the radiation layer 120.

[0129] In some embodiments, optionally, the thickness of the anti-backfire member 130 ranges from 0.15 mm to 2 mm.

[0130] In this embodiment, the thickness of the anti-backfire piece 130 is limited, specifically, the thickness of the anti-backfire piece 130 ranges from 0.15mm to 2mm. Understandably, the role of the anti-backfire piece 130 is to support the radiation layer 120, therefore, if the strength of the anti-backfire piece 130 is too low, it will lead to poor supporting effect of the anti-backfire piece 130, and further lead to deformation of the radiation layer 120. Therefore, the thickness of the anti-backfire piece 130 is limited in the range of 0.15mm to 2mm to ensure that the strength of the anti-backfire piece 130 meets the use requirements. And by making the anti-backfire piece 130 have a certain thickness, the anti-backfire piece 130 also has a certain heat insulation effect.

[0131] In some embodiments, optionally, the radiation layer 120 and the anti-backfire piece 130 are made of metal.

[0132] In this embodiment, the radiation layer 120 and the anti-backfire piece 130 are further limited. Specifically, the radiation layer 120 and the anti-backfire piece 130 are made of metal material. By using metal material to make the radiation layer 120 and the anti-backfire piece 130, on the one hand, the strength of the radiation layer 120 and the anti-backfire piece 130 can be improved, compared with the ceramic material of the combustion plate, the strength of the radiation layer 120 and the anti-backfire piece 130 in the burner 100 proposed by the utility model is higher, on the other hand, due to the low processing difficulty of the metal material mesh structure, the assembly is simple, thereby reducing the production difficulty.

[0133] In some embodiments, optionally, the anti-backfire piece 130 and the radiation layer 120 have a spacing.

[0134] In this embodiment, the anti-backfire piece 130 and the radiation layer 120 are further limited. Specifically, the anti-backfire piece 130 and the radiation layer 120 have a spacing. In this way, it is equivalent to setting an air heat insulation layer between the anti-backfire piece 130 and the radiation layer 120, compared with the structure that the anti-backfire piece 130 and the radiation layer 120 are attached, the utility model sets a spacing between the anti-backfire piece 130 and the radiation layer 120, which can reduce the heat transfer between the anti-backfire piece 130 and the radiation layer 120, reduce the temperature of the anti-backfire piece 130, reduce the possibility of backfire, and improve the safety of the burner 100.

[0135] In some embodiments, the anti-backfire piece 130 is a heat insulation material piece filled between the radiation layer 120 and the main body 110.

[0136] In the above technical solution, the excellent heat insulation characteristics of the heat insulation material piece can effectively block the heat transfer towards the gas containing cavity 111, further reduce the risk of static backfire, and further improve the reliability of the burner 100.

[0137] In some embodiments, the anti-backfire member 130 can be thermal insulation cotton or quartz wool.

[0138] The thermal insulation cotton and the quartz wool are provided with gaps for gas penetration, which does not affect the flow of the gas, ensures that the gas can flow smoothly to the radiation layer 120 for combustion, and the thermal insulation cotton and the quartz wool have excellent fireproof and heat insulation performance, which can effectively block the heat from being transmitted towards the gas containing cavity 111, thereby improving the reliability of the burner 100.

[0139] In some embodiments, the anti-backfire member 130 is arranged on the side of the radiation layer 120 away from the gas containing cavity 111, the anti-backfire member 130 exchanges heat with the radiation layer 120 to dissipate heat of the radiation layer 120, the anti-backfire member 130 is a metal member, and the anti-backfire member 130 is formed in a mesh structure.

[0140] In the embodiments of the utility model, the anti-backfire member 130 is a metal member, which is conducive to improving the heat dissipation efficiency of the anti-backfire member 130, thereby improving the heat dissipation efficiency of the radiation layer 120 and reducing the risk of static backfire, and in addition, the anti-backfire member 130 can also support the radiation layer 120 to avoid deformation of the radiation layer 120.

[0141] Referring to Figure 8 In some embodiments, the anti-backfire member 130 is arranged on the side of the radiation layer 120 away from the gas containing cavity 111, the anti-backfire member 130 exchanges heat with the radiation layer 120 to dissipate heat of the radiation layer 120, and the anti-backfire member 130 is a wave net. The wave net refers to a solid net formed in a wave shape, and the material of the net is a plastic material, such as a metal material.

[0142] Through the above technical solution, the wave-shaped 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 radiation layer 120 and further reducing the risk of static backfire.

[0143] Referring to Figure 9 In some embodiments, the anti-backfire member 130 is configured to have heat insulation and is located between the radiation layer 120 and the main body 110, and the radiation layer 120 is formed in a wave shape.

[0144] In the embodiments of the utility model, the anti-backfire member 130 is arranged between the radiation layer 120 and the main body 110, and the anti-backfire member 130 has heat insulation, so that the anti-backfire member 130 can block the heat transmitted from the radiation layer 120 towards the main body 110, reduces the temperature in the gas containing cavity 111, and effectively reduces the risk of static backfire; the wave-shaped radiation layer 120 increases the contact area between the radiation layer 120 and the air, increases the heat dissipation effect of the radiation layer 120, and further reduces the risk of static backfire.

[0145] It should be noted that, Figure 9 The effect diagram in the figure is an effect simulation diagram made by a conventional radiation layer having a combustion mesh hole as a whole. In the embodiment, the radiation layer 120 includes a first area 121 without a through hole, and the radiation layer 120 is formed in a wave shape as a whole, which can also increase the heat dissipation effect of the radiation layer 120 and reduce the risk of static tempering.

[0146] In some embodiments, the anti-tempering piece 130 is provided in plurality, and the radiation layer 120 is distributed on both sides of the anti-tempering piece.

[0147] In the embodiment, the anti-tempering piece 130 located between the radiation layer 120 and the main body 110 is used to block the heat from being transmitted towards the gas containing cavity 111, and the anti-tempering piece 130 located on the side of the radiation layer 120 away from the gas containing cavity 111 is used to improve the heat dissipation efficiency of the radiation layer 120, effectively reducing the temperature in the gas containing cavity 111 and effectively reducing the risk of static tempering.

[0148] In other embodiments, the anti-tempering piece 130 is provided in plurality, and the plurality of anti-tempering pieces 130 are all arranged between the radiation layer 120 and the main body 110, and the heat is further blocked by the plurality of anti-tempering pieces 130, further reducing the temperature in the gas containing cavity 111 and effectively reducing the risk of static tempering.

[0149] In still other embodiments, the anti-tempering piece 130 is provided in plurality, and the plurality of anti-tempering pieces 130 are all arranged on the side of the radiation layer 120 away from the gas containing cavity 111, and the heat dissipation area is increased by the plurality of anti-tempering pieces 130, improving the heat dissipation efficiency of the radiation layer 120 and effectively reducing the risk of static tempering.

[0150] In some specific embodiments, the burner 100 includes one radiation layer 120 and two anti-tempering pieces 130, one of the two anti-tempering pieces 130 is located on the side of the radiation layer 120 towards the gas containing cavity 111, and the other of the two anti-tempering pieces 130 is located on the side of the radiation layer 120 away from the gas containing cavity 111. In the embodiment, the structure of the burner 100 is simple, and the risk of tempering is effectively reduced.

[0151] In other specific embodiments, the burner 100 includes two radiation layers 120 and one anti-tempering piece 130, the two radiation layers 120 are arranged in parallel, and the anti-tempering piece 130 is located between the two radiation layers 120. One of the two radiation layers 120 away from the gas containing cavity 111 is used for combustion flame, and one close to the gas containing cavity 111 has a smaller mesh hole itself, further reducing the risk of tempering and further improving the safety of the burner 100.

[0152] In still some embodiments, the burner 100 comprises two radiation layers 120 and two anti-backfire members 130, which are sequentially stacked in the order of radiation layer 120, anti-backfire member 130, radiation layer 120, anti-backfire member 130 in the direction away from the gas containing cavity 111. In the embodiments of the present application, not only the stability of flame combustion is improved, the risk of backfire is reduced, but also the strength of the burner 100 as a whole is improved, and the reliability of the burner 100 in use is improved.

[0153] It should be understood that the radiation layer 120 and the anti-backfire member 130 can also be of other numbers, which are not limited by the present application. It should be understood that the radiation layer 120 and the anti-backfire member 130 can also be of other arrangement modes, which are not limited by the present application.

[0154] With reference to Figure 3 , Figure 10 and Figure 11 In some embodiments, the main body 110 comprises a housing 112 and a flow guide plate 113, the flow guide plate 113 is connected with the housing 112, the housing 112 and the flow guide plate 113 jointly enclose the gas containing cavity 111, and the flow guide plate 113 has a plurality of flow guide holes 114, which are used to discharge the combustible gas in the gas containing cavity 111 to the radiation layer 120, that is, the plurality of flow guide holes 114 are the above-mentioned gas outlets.

[0155] In this embodiment, the structure of the main body 110 is limited. The main body 110 comprises a housing 112 and a flow guide plate 113, wherein the flow guide plate 113 is connected with the housing 112, the flow guide plate 113 and the housing 112 jointly enclose the gas containing cavity 111, and the gas containing cavity 111 can contain a certain amount of combustible gas. Further, the flow guide plate 113 has a plurality of flow guide holes 114, and the combustible gas in the gas containing cavity 111 can flow to the radiation layer 120 through the flow guide holes 114, so that the combustible gas can burn on the radiation layer 120, the temperature of the radiation layer 120 is improved, and then the radiation layer 120 can radiate heat energy. The flow guide holes 114 can guide the flow of the combustible gas, and since the combustible gas flows to the radiation layer 120 through the flow guide holes 114, the position of the plurality of flow guide holes 114 can be reasonably designed so that the combustible gas can flow more uniformly to the radiation layer 120, avoiding uneven distribution of flames at each position of the radiation layer 120, so that the temperature at each position of the radiation layer 120 remains uniform.

[0156] In some embodiments, the plurality of flow guide holes 114 are uniformly distributed on the flow guide plate 113.

[0157] In this embodiment, the positions of the plurality of flow guide holes 114 are defined, and specifically, the plurality of flow guide holes 114 are distributed on the flow guide plate 113. Since the combustible gas flows to the radiant layer 120 through the flow guide holes 114, by distributing the plurality of flow guide holes 114 on the flow guide plate 113, the combustible gas can flow to the radiant layer 120 more uniformly, and the flame distribution at each position of the radiant layer 120 can be avoided, so that the temperature at each position of the radiant layer 120 can be kept uniform.

[0158] In some embodiments, the burner 100 further comprises a gas pipe 140 connected to the shell 112 and in communication with the gas containing cavity 111, and the gas pipe 140 is used to input the combustible gas into the gas containing cavity 111.

[0159] In this embodiment, the structure of the burner 100 is further defined, and the burner 100 further comprises a gas pipe 140, and the gas pipe 140 is used to input the combustible gas into the gas containing cavity 111. Specifically, the gas pipe 140 is connected to the shell 112 and in communication with the gas containing cavity 111, and the combustible gas flows into the gas containing cavity 111 through the gas pipe 140, so that the burner 100 can operate normally.

[0160] In some embodiments, the gas pipe 140 extends into the gas containing cavity 111, and the surface of the gas pipe 140 is provided with a plurality of exhaust holes 141.

[0161] In this embodiment, the structure of the gas pipe 140 is further defined. Specifically, the gas pipe 140 extends into the gas containing cavity 111, and the portion of the gas pipe 140 located in the gas containing cavity 111 is provided with a plurality of exhaust holes 141. By extending the gas pipe 140 into the gas containing cavity 111 and providing a plurality of exhaust holes 141 on the surface of the gas pipe 140 for discharging the combustible gas, the combustible gas can be discharged from the central region of the gas containing cavity 111 into the gas containing cavity 111, so that the combustible gas concentration at each position of the gas containing cavity 111 tends to be uniform, and the combustible gas can flow to the radiant layer 120 more uniformly, and the uniformity of the flame on the radiant layer 120 is improved.

[0162] It should be understood that the plurality of exhaust holes 141 can be distributed on the peripheral wall of the gas pipe 140, or can be located on the end face of the gas pipe 140, and the present application does not limit this.

[0163] In some specific embodiments, the gas pipe 140 located at one end of the gas containing cavity 111 is provided with a first shunt plate 142, the first shunt plate 142 closes the opening of the gas pipe 140, a plurality of exhaust holes 141 are formed on the first shunt plate 142, the gas is initially shunted through the plurality of exhaust holes 141 and then enters the gas containing cavity 111, and the gas in the gas containing cavity 111 is secondarily shunted through the plurality of guide holes 114 on the guide plate 113 and then flows to the radiation layer 120, so that the uniformity of the flame distribution at the radiation layer 120 is effectively improved.

[0164] In a possible embodiment, the burner 100 provided by the utility model mainly consists of a combustion surface (i.e. the radiation layer 120 and the anti-backfire member 130), an airflow distribution plate (i.e. the guide plate 113), a cavity (i.e. the gas containing cavity 111) and an injection pipe (i.e. the gas pipe 140). The combustion surface mainly consists of the flame radiation layer 120 (i.e. the radiation layer 120) and the heat insulation anti-backfire member 130 (i.e. the anti-backfire member 130).

[0165] The mixture of gas and air (i.e. combustible gas) enters the injection pipe, is mixed completely in the cavity and then uniformly enters the combustion surface through the airflow distribution plate, the flame burns on the flame radiation layer 120 of the combustion surface, the heat insulation anti-backfire member 130 is used to support the flame radiation layer 120 and plays a part heat blocking role. The temperature after the flame burns is above 800 DEG C, which is used to heat the flame radiation layer 120 and form heat radiation.

[0166] The flame radiation layer 120 is outside the heat insulation anti-backfire member 130, and the gas flow (i.e. combustible gas) burns on the flame radiation layer 120 after passing through the heat insulation anti-backfire member 130.

[0167] The flame radiation layer 120 is a mesh structure made of high-temperature corrosion resistant metal, the mesh number is between 40 meshes and 200 meshes, and the thickness of the flame radiation layer 120 is between 0.1 mm and 0.2 mm. The heat insulation anti-backfire member 130 is also a mesh structure made of high-temperature corrosion resistant metal, the mesh number is between 5 meshes and 40 meshes, and the thickness of the heat insulation anti-backfire member 130 is between 0.2 mm and 0.4 mm. The mesh size of the heat insulation support is larger than the mesh size of the flame radiation layer 120. There is a certain spacing between the heat insulation anti-backfire member 130 and the flame radiation layer 120, and the spacing can be 0.1 mm to 1 mm.

[0168] The utility model also provides a cooking utensil which comprises the burner 100 provided in the above technical solution.

[0169] The cooking utensil provided by the utility model has all the beneficial effects of the burner 100 provided in the above technical solution.

[0170] The cooking appliance comprises a pizza oven.

[0171] In some embodiments, the cooking device comprises a holding cavity for holding food, the holding cavity having a taking and placing opening for taking and placing food, the second area 122 comprises: a first combustion part 1221 and a second combustion part 1222, the equivalent diameter of the combustion mesh holes in the first combustion part 1221 is smaller than the equivalent diameter of the combustion mesh holes in the second combustion part 1222, and the first combustion part 1221 is located on the side of the second combustion part 1222 facing the taking and placing opening.

[0172] By the above technical solution, the temperature on the side of the burner 100 close to the taking and placing opening is reduced, thereby reducing the temperature on the outside of the cooking device and improving the safety of the cooking device.

[0173] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0174] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A burner, characterized by The burner comprises: a main body, a gas containing cavity being arranged in the main body, the main body being provided with a gas outlet communicating with the gas containing cavity; a radiation layer, the radiation layer being arranged on the main body and the opening of the gas outlet facing the radiation layer, the radiation layer comprising a first region and a second region, the second region being arranged around the first region, the first region being not provided with through holes, and the second region being provided with a plurality of combustion mesh holes.

2. The burner of claim 1, wherein The first region occupies an area S1, and the second region occupies an area S2, and the burner satisfies S2 / S1≥1.

25.

3. The burner of claim 2, wherein The first region is formed in a circular shape, and the diameter of the first region is R1, and R1≥160mm.

4. The burner of claim 3, wherein The second region is formed in a circular ring shape and sheaths the first region.

5. The burner of claim 1, wherein The radiation layer is configured to satisfy 4mm≤equivalent diameter of each of the combustion mesh holes≤6mm.

6. The burner of claim 5, wherein The second region comprises a first combustion part and a second combustion part, and the equivalent diameter of the combustion mesh holes in the first combustion part is smaller than the equivalent diameter of the combustion mesh holes in the second combustion part.

7. The burner of claim 1, wherein The radiation layer is configured to satisfy equivalent diameter of each of the combustion mesh holes≤0.8mm.

8. The burner of claim 1, wherein The main body comprises: a shell; a flow guide plate connected to the shell, the shell and the flow guide plate enclosing the gas containing cavity, and the flow guide plate having a plurality of flow guide holes for discharging combustible gas in the gas containing cavity to the second region.

9. The burner of claim 8, wherein Further comprising: a gas pipe connected to the shell and communicating with the gas containing cavity, the gas pipe being used for inputting the combustible gas into the gas containing cavity.

10. Burner according to any one of claims 1-9, characterized in that Further comprising: an anti-backfire member, the anti-backfire member being arranged side by side with the radiation layer in the thickness direction of the radiation layer, and the anti-backfire member satisfying at least one of the following conditions: the anti-backfire member is configured to have thermal insulation and is located between the radiation layer and the main body; the anti-backfire member exchanges heat with the radiation layer to dissipate heat from the radiation layer.

11. The burner of claim 10, wherein The anti-backfire member is in point contact with the radiation layer.

12. The burner of claim 11, wherein The anti-backfire member is a metal member and is formed in a mesh structure.

13. The burner of claim 12, wherein The anti-backfire member comprises a plurality of anti-backfire mesh holes, and the anti-backfire member is configured to satisfy 0.8mm 14. The burner of claim 12, wherein The anti-backfire member is a plurality of anti-backfire members, and the anti-backfire members are distributed on both sides of the radiation layer; or The plurality of anti-backfire members are located on the same side of the radiation layer.

15. A cooking appliance characterized by, The burner comprises: The burner according to any one of claims 1 to 14.

16. The cooking appliance of claim 15, wherein, The cooking appliance comprises a pizza oven.

17. The cooking appliance of claim 15, wherein, The cooking appliance comprises a holding cavity for holding food, and the holding cavity has a taking and placing opening for taking and placing food. The second region comprises a first combustion part and a second combustion part, the equivalent diameter of the combustion mesh holes in the first combustion part is smaller than the equivalent diameter of the combustion mesh holes in the second combustion part, and the first combustion part is located on the side of the second combustion part facing the taking and placing opening.

Images