Combustor

Abstract

The embodiment of the invention provides a burner, belongs to the technical field of kitchen stoves, and aims to solve the technical problems that the coverage range of flames of a burner in the related technology is limited, and uneven heating is easily caused. The burner comprises a furnace end, a gas distribution disc, an inner ring fire cover and an outer ring fire cover. The inner ring fire cover is provided with inner ring fire holes, the outer ring fire cover is provided with outer ring fire holes and middle ring fire holes, the middle ring fire holes are arranged towards the outside of the inner ring fire cover, the middle ring fire holes comprise a first middle ring fire hole and a second middle ring fire hole, and the second middle ring fire hole is arranged below the first middle ring fire hole. According to the burner, the middle ring fire hole is additionally formed in the outer ring fire cover, so that the blank of flames between the inner ring fire hole and the outer ring fire hole is filled, the coverage range of the flames is increased, the phenomenon that a cold area appears at the pot bottom due to the fact that no flames exist in the area between the inner ring fire cover and the outer ring fire cover is avoided, and the more uniform heating effect is achieved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of kitchen cookers, and particularly to a burner. Background Art

[0002] As the core component of a gas stove, the main function of a burner is to mix gas with air and then ignite it to generate flames for heating food. Existing burners usually consist of components such as a burner head, an outer ring fire cover, and an inner ring fire cover. The inner ring fire cover is located at the center of the burner head, and the outer ring fire cover is arranged around the inner ring fire cover. The inner ring fire cover is provided with inner ring fire holes, and the outer ring fire cover is provided with outer ring fire holes. The arrangement of the fire holes is relatively simple.

[0003] However, the above-mentioned burner only has two inner and outer rings of fire holes, and the coverage range of the flame is limited, which easily leads to the problem of uneven heating. Summary of the Invention

[0004] The embodiments of the present application provide a burner, which can solve the technical problems that the coverage range of the flame of the burner is limited and it is easy to cause uneven heating.

[0005] In a first aspect, the embodiments of the present application provide a burner, including:

[0006] A burner head, forming a gas mixing chamber with an opening;

[0007] A gas distribution plate, covering the burner head, the gas distribution plate having a gas passage, and an air inlet of the gas passage being communicated with the opening of the gas mixing chamber;

[0008] An inner ring fire cover, covering the gas distribution plate, the inner ring fire cover being provided with inner ring fire holes, and the inner ring fire holes being communicated with an air outlet of the gas passage;

[0009] An outer ring fire cover, covering the gas distribution plate and located outside the inner ring fire cover, the outer ring fire cover being provided with:

[0010] Outer ring fire holes, arranged on the outer peripheral side of the outer ring fire cover;

[0011] Middle ring fire holes, arranged facing outside the inner ring fire cover, the middle ring fire holes including:

[0012] A first middle ring fire hole;

[0013] A second middle ring fire hole, the second middle ring fire hole being arranged below the first middle ring fire hole;

[0014] Both the outer ring fire holes and the middle ring fire holes are communicated with the air outlet of the gas passage.

[0015] In the burner according to the embodiments of the present application, the gas mixing chamber of the burner head can be used to receive the mixture of gas and air. The gas and air can be pre-mixed in the gas mixing chamber, which helps to ensure an appropriate gas-to-air ratio during combustion, thereby improving the combustion efficiency and flame stability.

[0016] The inlet of the gas passage of the gas distribution plate is communicated with the opening of the gas mixing chamber, so that the mixed gas can flow from the gas mixing chamber into the gas passage and be further distributed to each fire hole. This can ensure the uniformity of gas flow and avoid excessive or insufficient gas supply in local areas.

[0017] The inner ring burner cap can provide the flame in the central area through the inner ring fire holes. The connectivity between the inner ring fire holes and the gas passage ensures the effective supply of gas, enabling the burner to provide a concentrated heating effect in the central area, which is suitable for small pots or cooking tasks that require concentrated heating.

[0018] The outer ring burner cap can provide the flame coverage in the peripheral area through the outer ring fire holes, expanding the flame coverage range and enabling the burner to adapt to larger cooking areas.

[0019] By adding the middle ring fire holes on the outer ring burner cap, it helps to fill the gap of the flame between the inner ring fire holes and the outer ring fire holes, increase the flame coverage range, avoid the cold area at the bottom of the pot due to the lack of flame in the area between the inner ring burner cap and the outer ring burner cap, and provide a more uniform heating effect.

[0020] The middle ring fire holes include the first middle ring fire holes located on the upper layer and the second middle ring fire holes located on the lower layer. This longitudinal distribution method can provide flames at different heights, enhance the uniformity of heat distribution, and enable the burner to provide a more three-dimensional heating effect, especially suitable for cooking scenarios that require multi-level heating.

[0021] By communicating the outer ring fire holes and the middle ring fire holes with the outlet of the gas passage, the burner can provide a stable gas supply at each fire hole, thereby forming a uniform and stable flame to prevent the flame from being unstable or extinguished due to uneven gas supply.

[0022] In some embodiments of the present application, there is a first included angle between the axis of the first middle ring fire hole and the horizontal plane;

[0023] and / or, there is a second included angle between the axis of the second middle ring fire hole and the horizontal plane.

[0024] With such a setting, the inclined first middle ring fire holes and the second middle ring fire holes can guide the flame to spread in a specific direction, which not only helps to expand the flame coverage range but also enables the heat to be more evenly distributed on the bottom of the pot.

[0025] The inclined design helps to increase the depth of the flame holes to reduce the gas outlet velocity during gas flow and promote the full combustion of the gas. In addition, the inclined flame hole design also helps to reduce the gas flow velocity and increase the mixing time of the gas and air, thereby improving the combustion efficiency.

[0026] By controlling the angle between the first middle ring flame holes and the second middle ring flame holes, the burner can form flames at different heights and directions, which helps to achieve a more three-dimensional heating effect during cooking, especially in cases where multi-level heating is required.

[0027] In addition, since the second middle ring flame holes are located below the first middle ring flame holes, the mixture after combustion at the second middle ring flame holes is more likely to flow towards the first middle ring flame holes, providing a flame stabilizing effect. This flame stabilizing effect can effectively prevent the flame at the first middle ring flame holes from going out and improve the safety and reliability of the burner.

[0028] In some embodiments of the present application, the outer ring fire cap includes:

[0029] An outer ring portion, on which the outer ring flame holes are provided;

[0030] An inner ring portion, arranged inside the outer ring portion, and the inner ring portion is coaxial with the outer ring portion;

[0031] A connecting portion, connected between the outer ring portion and the inner ring portion;

[0032] A first convex portion, arranged at the top of the connecting portion, and the middle ring flame holes are provided on the first convex portion;

[0033] The outer ring portion, the inner ring portion and the connecting portion enclose an annular cavity with an open bottom. The outer ring flame holes and the middle ring flame holes are both communicated with the annular cavity, and the annular cavity is communicated with the gas outlet of the gas channel through the open mouth.

[0034] With such a setting, the design of the outer ring portion provides a support structure for the peripheral flame. By providing the outer ring flame holes on the outer ring portion, the gas can form a uniform flame coverage in the peripheral area, which is suitable for large-area heating.

[0035] The inner ring portion and the connecting portion together with the outer ring portion enclose an annular cavity. The annular cavity can be communicated with the gas channel through the open mouth at its bottom to receive the mixed gas transported by the gas channel. The mixed gas can be evenly distributed in the annular cavity and flow evenly to each outer ring flame hole and middle ring flame hole.

[0036] By providing a first convex portion at the top of the connecting portion and arranging the middle ring flame holes on the first convex portion, the middle ring flame holes can spray flames at a higher position, increasing the layering and coverage of the flames, which helps to achieve a multi-level heating effect.

[0037] In some embodiments of the present application, one side of the first raised portion facing the inner ring burner cap has an inclined surface, and the height of the inclined surface near the inner ring burner cap is lower than the height of the inclined surface away from the inner ring burner cap, and the middle ring fire holes are arranged on the inclined surface.

[0038] With such an arrangement, since the middle ring fire holes are arranged on the inclined surface, the middle ring fire holes can spray flames at a certain angle, which helps to achieve directional control of the flames and optimization of the coverage area. The inclination mode of the inclined surface enables the flames to better point to a specific area, that is, spray out towards the blank area between the inner and outer circle flames, filling the blank area covered by the flames, and can be directed towards the bottom and side of the cooking utensil, thereby improving the heating uniformity and efficiency.

[0039] In some embodiments of the present application, in the middle ring fire holes, the wall thickness between two adjacent holes is 1 mm to 3 mm.

[0040] If the wall thickness exceeds 3 mm, the distance between adjacent fire holes will be too far. This may cause too large a gap between the flames, and the combusted mixture cannot effectively flow from one fire hole to another fire hole, and a good flame stabilization effect cannot be achieved, which may cause the flames to be unstable or extinguished, and it is difficult to achieve the continuity and stability of the flames.

[0041] If the wall thickness is less than 1 mm, the distance between adjacent fire holes will be too close. Such a design may cause problems in the manufacturing process, such as difficulty in processing, and it is easy to cause penetration between the walls or structural instability. In addition, the too thin wall may not be able to withstand the thermal stress generated during the combustion process, affecting the durability and safety of the burner.

[0042] By setting the wall thickness between 1 mm and 3 mm, the burner can achieve a balance between the manufacturing process and functionality. With such an arrangement, it not only helps to achieve the stability and continuity of the flames, but also helps to avoid problems such as processing difficulties and structural instability, and improves the structural strength and durability of the burner.

[0043] In some embodiments of the present application, the number of the first raised portions is multiple, and the multiple first raised portions are spaced apart and distributed on the top of the connecting portion.

[0044] With such an arrangement, the presence of multiple first raised portions enables the middle ring fire holes to be distributed in a wider area. This distribution method can effectively increase the coverage area of the flames and ensure that the heat can be evenly transferred to all parts of the cooking appliance.

[0045] The middle ring fire holes set on each first protrusion can be a group. By distributing the multiple first protrusions at intervals, the intervals between the middle ring fire holes in each group will not be too dense, and the air circulation around the flame will be smoother, which can be conducive to the supply of secondary air, making the combustion process of each group of middle ring fire holes more complete, so as to avoid incomplete combustion or unstable flames caused by insufficient air. In contrast, if the middle ring fire holes are too dense, it may cause the flames to merge with each other, reducing the contact area between the flame and the air, which is not conducive to the supply of secondary air.

[0046] Furthermore, the spaced distribution of the plurality of protrusions can form a plurality of independent flame zones, which helps to achieve a more uniform heat distribution during the cooking process, especially when a large area needs to be heated.

[0047] In some embodiments of the present application, the outer ring fire cover further includes a second protrusion, and the second protrusion is arranged on the top of the connecting portion;

[0048] The second protrusions and the first protrusions are arranged alternately, and a flow guide channel is formed between adjacent second protrusions and first protrusions.

[0049] With such arrangement, a guide channel is formed between the adjacent first protrusions and the second protrusions, which can effectively guide the combustion mixture to flow between the middle ring fire holes and the outer ring fire holes, thereby optimizing the combustion process.

[0050] By directing the flow of the combustion mixture, a continuous supply of gas and air can be provided, which helps to form a stable flame and effectively prevents the flame from being extinguished, especially under the influence of wind or other external factors.

[0051] In addition, the flow of the combustion mixture can also improve combustion efficiency, ensure complete combustion of the fuel gas, and reduce the emission of unburned gases.

[0052] In some embodiments of the present application, the outer ring fire holes are inclined relative to the horizontal plane, and the height of one end of the outer ring fire holes toward the gas channel is lower than the height of one end of the outer ring fire holes away from the gas channel.

[0053] The end of the outer ring fire hole away from the gas channel is the end where the outer ring fire hole emits fire. With this arrangement, the flame ejected from the outer ring fire hole can be ejected at a more effective angle to point more directly to the bottom of the pot, shortening the distance between the flame and the bottom of the pot. This design helps to reduce the loss of heat during the transfer process, ensures that the heat is transferred to the bottom of the pot more concentratedly, and improves the thermal efficiency.

[0054] However, the inclination angle of the outer ring fire hole should not be too large, otherwise it may cause the flow path to be reduced and the gas flow rate to be too fast. This may lead to incomplete combustion and excessive carbon monoxide production, which may cause potential harm to health.

[0055] By controlling the inclination angle of the outer-ring flame holes, not only can the thermal efficiency be improved, but also the sufficiency of combustion can be ensured, avoiding the emission of harmful gases caused by incomplete combustion.

[0056] In some embodiments of the present application, the outer-ring flame cover is provided with a first flame-stabilizing slit, and the first flame-stabilizing slit communicates with the outer-ring flame holes;

[0057] And / or, the inner-ring flame cover is provided with a second flame-stabilizing slit; in the radial direction of the inner-ring flame cover, the second flame-stabilizing slit is inclined, and the height of one end of the second flame-stabilizing slit close to the axis of the inner-ring flame cover is lower than the height of the other end of the second flame-stabilizing slit away from the axis of the inner-ring flame cover.

[0058] With such a setting, the first flame-stabilizing slit can provide an additional channel, so that the mixed gas of gas and air can also flow out from the first flame-stabilizing slit. After the mixed gas flows out from the outer-ring flame holes and the first flame-stabilizing slit, they collide with each other, and the collision of the mixed gas is used to achieve the purpose of deceleration, so that the mixed gas can stably burn at the position of the outer-ring flame holes. This stabilizing effect helps to prevent the flame from extinguishing or flickering, ensuring the continuity and stability of the combustion process.

[0059] When the thermal intensity of the outer-ring flame holes is relatively large and the gas outlet speed is relatively fast, the first flame-stabilizing slit communicates with the outer-ring flame holes, and the gas outlet speed of the outer-ring flame holes can also be reduced, which helps to prevent the flame from detaching from the outer-ring flame holes (i.e., the flame-lifting phenomenon) due to too fast gas outlet speed.

[0060] Moreover, the first flame-stabilizing slit communicates with the outer-ring flame holes, and the gas flow rate of the first flame-stabilizing slit can also be increased, enhancing the flame-stabilizing effect of the first flame-stabilizing slit and reducing the probability of flame lifting.

[0061] By providing the first flame-stabilizing slit on the outer-ring flame cover and making it communicate with the outer-ring flame holes, the burner can maintain the stability of the flame under the conditions of high thermal intensity and high gas outlet speed, ensuring the stability and efficiency of the combustion process.

[0062] The second flame-stabilizing slit can provide an additional channel, so that the mixed gas of gas and air can also flow out from the second flame-stabilizing slit. After the mixed gas flows out from the inner-ring flame holes and the second flame-stabilizing slit, they collide with each other, and the collision of the mixed gas is used to achieve the purpose of deceleration, so that the mixed gas can stably burn at the position of the inner-ring flame holes. This stabilizing effect helps to prevent the flame from extinguishing or flickering, ensuring the continuity and stability of the combustion process.

[0063] The second flame-stabilizing slot arranged obliquely can guide the flame and the combustion mixture to flow to the position where the inner-ring flame holes are located, playing a good role in stabilizing the flame for the inner-ring flame holes. In addition, the obliquely arranged second flame-stabilizing slot can also increase the flow path of the gas, helping to prevent the flame from detaching from the flame holes due to too fast gas outlet speed and ensuring the stability of the flame.

[0064] Second, an embodiment of the present application provides a burner, including:

[0065] A burner head, forming a gas mixing cavity with an opening, and the gas mixing cavity is used for mixing the introduced gas and air to form a mixed gas;

[0066] A gas distribution plate, having a gas passage;

[0067] An inner-ring flame cover, provided with inner-ring flame holes, and the inner-ring flame holes are communicated with the gas passage;

[0068] An outer-ring flame cover, located outside the inner-ring flame cover, and the outer-ring flame cover is provided with:

[0069] Outer-ring flame holes, arranged on the outer peripheral side of the outer-ring flame cover;

[0070] Middle-ring flame holes, arranged facing the inner-ring flame cover, and the middle-ring flame holes include:

[0071] First middle-ring flame holes;

[0072] Second middle-ring flame holes, and the second middle-ring flame holes are arranged below the first middle-ring flame holes;

[0073] The gas distribution plate is used to transport the mixed gas to the inner-ring flame cover and the outer-ring flame cover through the gas passage, so that the flame formed by the combustion of the mixed gas can be ejected from the inner-ring flame holes, the outer-ring flame holes and the middle-ring flame holes.

[0074] For the burner of the embodiment of the present application, the gas mixing cavity of the burner head can fully mix the gas and air, and the gas distribution plate can provide a uniform mixed gas distribution to the inner-ring flame cover and the outer-ring flame cover.

[0075] The inner-ring flame cover can provide a flame in the central area through the inner-ring flame holes, so that the burner can provide a concentrated heating effect in the central area, which is suitable for small pots or cooking tasks that require concentrated heating.

[0076] The outer-ring flame cover can provide a flame coverage in the peripheral area through the outer-ring flame holes, expanding the flame coverage range, so that the burner can adapt to larger-area cooking requirements.

[0077] By adding middle-ring flame holes to the outer-ring burner cap, the coverage area of the flame is increased, which helps to fill the gap between the inner-ring and outer-ring flame holes, thus increasing the flame coverage area and preventing the area between the inner-ring and outer-ring burner caps from having a cold zone due to lack of flame at the bottom of the pot, providing a more uniform heating effect.

[0078] The middle-ring flame holes include the first middle-ring flame holes and the second middle-ring flame holes distributed longitudinally. The longitudinal distribution of the middle-ring flame holes can provide flames at different heights, enhancing the uniformity of heat distribution and enabling the burner to provide a more three-dimensional heating effect, which is especially suitable for cooking scenarios that require multi-level heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0079] To more clearly illustrate the embodiments of the present application or the implementation manners in the related art, the following will briefly introduce the drawings required for use in the description of the embodiments or the related art. Obviously, the drawings in the following description are some embodiments of the present application, and those of ordinary skill in the art can also obtain other drawings based on these drawings.

[0080] Figure 1 Structural schematic diagram of the burner provided by the embodiment of the present application;

[0081] Figure 2 Internal structural schematic diagram of the burner provided by the embodiment of the present application;

[0082] Figure 3 For Figure 1 Exploded view of the burner;

[0083] Figure 4 For Figure 3 Internal structural schematic diagram of the gas distribution plate;

[0084] Figure 5 For Figure 3 Structural schematic diagram of the first middle-ring flame holes of the outer-ring burner cap;

[0085] Figure 6 For Figure 3 Structural schematic diagram of the second middle-ring flame holes of the outer-ring burner cap;

[0086] Figure 7 For Figure 3 Structural schematic diagram of the outer-ring flame holes of the outer-ring burner cap;

[0087] Figure 8 For Figure 3 Structural schematic diagram of the first flame stabilizing slot of the outer-ring burner cap;

[0088] Figure 9 For Figure 3 Structural schematic diagram of the inner-ring flame holes of the inner-ring burner cap;

[0089] Figure 10 For Figure 3 Schematic diagram of the structure of the second flame stabilizing slot of the inner ring burner cap.

[0090] Explanation of reference numerals in the drawings:

[0091] 100 - burner head; 101 - first gas mixing chamber; 102 - second gas mixing chamber;

[0092] 200 - gas distribution plate; 201 - first gas passage; 202 - second gas passage;

[0093] 300 - inner ring burner cap; 301 - inner ring burner holes; 302 - second flame stabilizing slot; 303 - chamber;

[0094] 310 - annular wall;

[0095] 320 - brim;

[0096] 330 - top cover;

[0097] 400 - outer ring burner cap; 401 - outer ring burner holes; 402 - middle ring burner holes; 4021 - first middle ring burner hole; 4022 - second middle ring burner hole; 403 - annular chamber; 404 - diversion channel; 405 - first flame stabilizing slot;

[0098] 410 - outer ring part;

[0099] 420 - inner ring part;

[0100] 430 - connecting part;

[0101] 440 - first convex part; 441 - inclined surface;

[0102] 450 - second convex part. Detailed implementation manners

[0103] As described in the background art, in the related art, the burner, as the core component of the gas stove, its main function is to mix gas with air and then ignite it to generate a flame for heating food.

[0104] Existing burners are usually composed of components such as a burner head, an outer ring burner cap, and an inner ring burner cap. The inner ring burner cap is located at the center of the burner head, the outer ring burner cap is arranged around the inner ring burner cap, the inner ring burner cap is provided with inner ring fire holes, and the outer ring burner cap is provided with outer ring fire holes.

[0105] During the combustion process, the gas is transported to the burner through a specific pipeline system, pre - mixed with the air introduced from the air inlet at the burner head part to form a combustible mixture gas, and these mixture gases are ejected and ignited at the inner ring fire holes and the outer ring fire holes to form a stable flame.

[0106] However, in the prior art, the arrangement of the flame holes of the burner is relatively simple. It only relies on the inner and outer two circles of flame holes to achieve flame coverage and heating. The flame coverage range is limited. Especially when cooking large-area foods, uneven heating may occur.

[0107] In view of this, the technical solution of the embodiment of the present application provides a burner, including a burner head, a gas distribution plate, an inner ring fire cover and an outer ring fire cover. The burner head forms a mixing gas chamber with an opening, and gas and air can enter the mixing gas chamber for pre-mixing to ensure an appropriate ratio of gas to air during combustion, thereby improving the combustion efficiency and flame stability.

[0108] The gas channels of the gas distribution plate are communicated with the mixing gas chamber, so that the mixed gas can be distributed to the inner ring fire cover and the outer ring fire cover, ensuring the uniformity and stability of the flame.

[0109] The inner ring fire cover provides the flame in the central area through the inner ring flame holes, and can provide a concentrated heating effect in the central area. The outer ring fire cover is provided with outer ring flame holes, which can provide flame coverage for the peripheral area, enabling the burner to adapt to larger-area cooking requirements.

[0110] In order to fill the gap of the flame between the inner ring flame holes and the outer ring flame holes, the burner provided by the embodiment of the present application is also provided with middle ring flame holes on the outer ring fire cover. The setting of the middle ring flame holes can form a transitional flame layer between the inner and outer circle flames, increasing the flame coverage range, and avoiding the cold area at the bottom of the pot due to the lack of flame in the area between the inner ring fire cover and the outer ring fire cover, so as to provide a more uniform heating effect.

[0111] The middle ring flame holes include the first middle ring flame holes and the second middle ring flame holes distributed longitudinally. The up-and-down arrangement of the first middle ring flame holes and the second middle ring flame holes can provide flames at different heights, enhancing the uniformity of heat distribution, enabling the burner to provide a more three-dimensional heating effect to meet diverse cooking requirements.

[0112] To make the purpose, implementation manner and advantages of the present application clearer, the following will clearly and completely describe the exemplary implementation manner of the present application in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only a part of the embodiments of the present application, rather than all the embodiments.

[0113] It should be noted that the brief description of the terms in the present application is only for the convenience of understanding the subsequent described implementation manner, rather than intending to limit the implementation manner of the present application. Unless otherwise specified, these terms should be understood in their ordinary and common meanings.

[0114] Furthermore, the terms "comprising", "having" and any variations thereof are intended to cover a non-exclusive inclusion. For example, a product or device comprising a series of components need not be limited to those components clearly listed, but may include other components not clearly listed or inherent to such product or device.

[0115] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0116] The terms "first", "second", etc. are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0117] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0118] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0119] Combined Figures 1 to 3 As shown, an embodiment of the present application provides a burner.

[0120] In some embodiments, the burner includes a burner head 100, and the burner head 100 is provided with a gas mixing chamber having an opening. The gas mixing chamber of the burner head 100 can be used to receive a mixture of gas and air, and the gas and air can be pre-mixed in the gas mixing chamber, which helps to ensure an appropriate gas-to-air ratio during combustion, thereby improving combustion efficiency and flame stability.

[0121] In some embodiments, the burner includes a gas distribution plate 200, and the gas distribution plate 200 is covered on the burner head 100. The gas distribution plate 200 can be correspondingly arranged with the gas mixing cavity of the burner head 100, so that the mixed gas can flow from the gas mixing cavity into the gas distribution plate 200.

[0122] The gas distribution plate 200 has a gas channel, and the air inlet of the gas channel is communicated with the opening of the gas mixing cavity. Through its gas channel, the gas distribution plate 200 can effectively distribute the mixed gas to the inner ring burner cap 300 and the outer ring burner cap 400, and further distribute it to each fire hole, ensuring the uniformity and stability of the flame.

[0123] In some embodiments, the burner includes an inner ring burner cap 300, and the inner ring burner cap 300 is covered on the gas distribution plate 200. The inner ring burner cap 300 can be arranged in the middle of the gas distribution plate 200 to correspondingly arrange in the middle of the bottom of the cookware.

[0124] The inner ring burner cap 300 is provided with inner ring fire holes 301. The inner ring burner cap 300 provides a flame in the central area through the inner ring fire holes 301, so that the burner can provide a concentrated heating effect in the central area, which is suitable for small pots or cooking tasks that require concentrated heating.

[0125] The inner ring fire holes 301 are communicated with the air outlet of the gas channel, and the gas channel can transport the mixed gas in the gas mixing cavity to the inner ring fire holes 301, which can ensure the effective supply of gas at the inner ring fire holes 301 to prevent the flame from being unstable or extinguished due to uneven gas supply.

[0126] In some embodiments, the burner includes an outer ring burner cap 400, and the outer ring burner cap 400 is covered on the gas distribution plate 200. The outer ring burner cap 400 is located outside the inner ring burner cap 300. The outer ring burner cap 400 can provide flame coverage for the peripheral area outside the inner ring burner cap 300.

[0127] In some embodiments, the outer ring burner cap 400 is provided with outer ring fire holes 401, and the outer ring fire holes 401 can be arranged on the outer peripheral side of the outer ring burner cap 400. The outer ring burner cap 400 provides a flame for the peripheral area through the outer ring fire holes 401, expanding the coverage range of the flame, so that the burner can adapt to larger area cooking requirements.

[0128] The outer ring fire holes 401 are communicated with the air outlet of the gas channel. The gas channel can transport the mixed gas in the gas mixing cavity to the outer ring fire holes 401, which can ensure the effective supply of gas at the outer ring fire holes 401 to prevent the flame from being unstable or extinguished due to uneven gas supply.

[0129] In some embodiments, the outer ring burner cap 400 can be provided with middle ring fire holes 402, and the middle ring fire holes 402 can be arranged facing outside the inner ring burner cap 300.

[0130] The middle ring fire holes 402 help to fill the flame gap between the inner ring fire holes 301 and the outer ring fire holes 401, increase the flame coverage, avoid the area between the inner ring fire cover 300 and the outer ring fire cover 400 causing a cold area on the bottom of the pot due to the lack of flame, and provide a more uniform heating effect.

[0131] The middle ring fire hole 402 is connected to the gas outlet of the gas channel. The gas channel can transport the mixed gas in the gas mixing chamber to the middle ring fire hole 402, which can ensure the effective supply of gas at the middle ring fire hole 402 to avoid flame instability or extinguishing due to uneven gas supply.

[0132] In some embodiments, the middle ring fire hole 402 may include a first middle ring fire hole 4021. The outer ring fire cover 400 forms a transition flame layer between the outer ring flame and the inner ring flame through the first middle ring fire hole 4021, increasing the coverage of the flame to provide a more uniform heating effect.

[0133] In some embodiments, the middle ring fire hole 402 may include a second middle ring fire hole 4022 , and the second middle ring fire hole 4022 is disposed below the first middle ring fire hole 4021 .

[0134] The second center ring fire hole 4022 is arranged below the first center ring fire hole 4021, and the first center ring fire hole 4021 and the second center ring fire hole 4022 are arranged in layers up and down, which can provide flames of different heights and enhance the uniformity of heat distribution, so that the burner can provide a more three-dimensional heating effect, which is especially suitable for cooking scenes that require multi-level heating.

[0135] Specifically, the burner provided in the embodiment of the present application, through the combined design of the inner ring fire holes 301, the outer ring fire holes 401 and the middle ring fire holes 402, can provide a more uniform and extensive flame coverage range, which is suitable for cooking utensils of different sizes and shapes. It can not only improve the uniformity of heating, but also enhance the combustion efficiency and flame stability, especially when cooking a large area of ​​food, and can effectively avoid uneven heating.

[0136] Combination Figure 4 As shown, in some embodiments, there may be a first angle α between the axis of the first middle ring fire hole 4021 and the horizontal plane.

[0137] The height of the first middle ring fire hole 4021 toward the end of the inner ring fire cover 300 is higher than the height of the first middle ring fire hole 4021 away from the end of the inner ring fire cover 300 .

[0138] By controlling the first angle α between the axis of the first middle ring fire hole 4021 and the horizontal plane, the spraying direction and shape of the flame can be changed so that the flame can better cover the bottom of the cooking utensil and increase the uniformity of heating.

[0139] Specifically, the inclined first middle ring fire hole 4021 can guide the flame to spread in a specific direction, which not only helps to expand the flame coverage, but also enables the heat to be more evenly distributed on the bottom of the pot.

[0140] Moreover, the inclined design also helps to increase the depth of the first middle ring fire hole 4021, which can reduce the gas outlet speed during gas flow and promote the full combustion of gas. In addition, by reducing the gas flow rate, the mixing time of gas and air can be increased, thereby improving the combustion efficiency.

[0141] For example, the angle of the first angle α can be set within any range of 20°-25°, 25°-30°, 30°-35°, 35°-40°, 40°-45°, and 45°-50°, so that the first middle ring fire hole 4021 can better emit fire toward the bottom of the cookware, making the heat more evenly distributed on the bottom of the pot.

[0142] Combination Figure 5 As shown, in some embodiments, there may be a second angle β between the axis of the second middle ring fire hole 4022 and the horizontal plane.

[0143] The height of the second middle ring fire hole 4022 toward the inner ring fire cover 300 is higher than the height of the second middle ring fire hole 4022 away from the inner ring fire cover 300 .

[0144] By controlling the second angle β between the axis of the second middle ring fire hole 4022 and the horizontal plane, the spraying direction and shape of the flame can be changed so that the flame can better cover the bottom of the cooking utensil and increase the uniformity of heating.

[0145] It also allows the burners to form flames at different heights and directions. This design helps achieve a more three-dimensional heating effect during cooking, especially when multiple levels of heating are required.

[0146] Specifically, the obliquely arranged second middle ring fire hole 4022 can guide the flame to spread in a specific direction, which not only helps to expand the flame coverage, but also enables the heat to be more evenly distributed on the bottom of the pot.

[0147] Moreover, the inclined design also helps to increase the depth of the second middle ring fire hole 4022, which can reduce the gas outlet speed when the gas flows and promote the full combustion of the gas. In addition, by reducing the gas flow rate, the mixing time of the gas and air can be increased, thereby improving the combustion efficiency.

[0148] In some embodiments, the hole depth of the second middle-ring flame holes 4022 can be greater than that of the first middle-ring flame holes 4021. The greater the hole depth, the greater the frictional resistance along the way. In this way, the gas outlet speed of the second middle-ring flame holes 4022 can be less than that of the first middle-ring flame holes 4021, ensuring sufficient combustion of the gas at the second middle-ring flame holes 4022.

[0149] Moreover, since the second middle-ring flame holes 4022 are arranged below the first middle-ring flame holes 4021, the mixture after combustion at the second middle-ring flame holes 4022 is more likely to flow towards the first middle-ring flame holes 4021, providing a flame stabilization effect. This flame stabilization effect can effectively prevent the flame at the first middle-ring flame holes 4021 from extinguishing, improving the safety and reliability of the burner.

[0150] For example, the angle of the second included angle β can be set within any one of the ranges of 20° - 25°, 25° - 30°, 30° - 35°, 35° - 40°, 40° - 45°, 45° - 50°, so that the second middle-ring flame holes 4022 can better direct the flame towards the bottom of the cookware, making the heat more evenly distributed at the bottom of the pot.

[0151] Specifically, by setting the first included angle α and the second included angle β, the burner can achieve more flexible and efficient flame control. The inclined flame hole design not only expands the coverage of the flame, but also promotes the full combustion of the gas by increasing the hole depth and reducing the gas flow rate, contributing to the formation of a stable flame, and providing a flame stabilization effect through the flow of the mixture after combustion to other flame holes. This flame stabilization effect can effectively prevent the flame from extinguishing, improving the safety and reliability of the burner. With such settings, the burner provided by the embodiments of the present application can be significantly improved in terms of heating uniformity, combustion efficiency, and flame stability, meeting diverse cooking requirements.

[0152] Combined with Figures 5 to 8 As shown, in some embodiments, the outer ring burner cap 400 can include an outer ring portion 410, and the outer ring flame holes 401 can be arranged on the outer ring portion 410.

[0153] The outer ring portion 410 can provide a support structure for the peripheral flame. By arranging the outer ring flame holes 401 on the outer ring portion 410, the gas can form a uniform flame coverage in the peripheral area, suitable for large-area heating.

[0154] In some embodiments, the outer ring burner cap 400 can include an inner ring portion 420. The inner ring portion 420 can be arranged inside the outer ring portion 410, and the inner ring portion 420 can be coaxial with the outer ring portion 410.

[0155] The inner ring portion 420 can provide the inner support of the outer ring burner cap 400, enabling the mixed gas to be distributed between the outer ring portion 410 and the inner ring portion 420, facilitating the flow towards each outer ring flame hole 401.

[0156] In some embodiments, the outer ring fire cover 400 may include a connection portion 430, and the connection portion 430 may be connected between the outer ring portion 410 and the inner ring portion 420. The connection portion 430 forms a shield on the top of the inner ring portion 420 and the outer ring portion 410.

[0157] The outer ring portion 410 , the inner ring portion 420 and the connecting portion 430 may be arranged to form an annular cavity 403 with an open bottom.

[0158] The annular cavity 403 can be connected to the gas channel through the opening at the bottom thereof to receive the mixed gas transported by the gas channel. The mixed gas can be evenly distributed in the annular cavity 403 .

[0159] The outer ring fire holes 401 and the middle ring fire holes 402 can both be connected to the annular cavity 403 , so the mixed gas in the annular cavity 403 can flow evenly to each of the outer ring fire holes 401 and the middle ring fire holes 402 .

[0160] In some embodiments, the outer ring fire cover 400 may include a first protrusion 440 . The first protrusion 440 may be disposed on the top of the connecting portion 430 , and the middle ring fire hole 402 may be disposed on the first protrusion 440 .

[0161] The middle ring fire holes 402 are capable of spraying flames at a higher level, increasing the layering and coverage of the flames, and helping to achieve a multi-level heating effect.

[0162] In some embodiments, the first protrusion 440 may have an inclined surface 441 on one side facing the inner ring fire cover 300 . The middle ring fire hole 402 may be disposed on the inclined surface 441 .

[0163] The design of the inclined surface 441 enables the middle ring fire hole 402 to spray flames at a specific angle, so that the flames can be better directed to specific areas, especially the bottom and sides of the pot, thereby improving the uniformity and efficiency of heating.

[0164] The height of the inclined surface 441 close to the inner ring fire cover 300 is lower than the height of the inclined surface 441 away from the inner ring fire cover 300. This height difference design allows the flame to spray toward the blank area between the inner and outer ring flames, filling the blank area covered by the flame and enhancing the uniformity of the overall heating.

[0165] Specifically, for the burner provided in the embodiments of the present application, by arranging the middle-ring flame holes 402 on the inclined surface 441 and designing the height of the inclined surface 441 near the inner-ring burner cap 300 to be lower, it is possible to have flames emerging between the inner and outer-ring flames, effectively filling the blank area between the inner and outer-ring flames, achieving a more uniform flame coverage, and ensuring uniform heating of the bottom and side surfaces of the cookware. Moreover, the upwardly inclined flame ejection direction enables the burner to better adapt to cookware of different shapes and sizes, improving the cooking efficiency and effect.

[0166] In some embodiments, in the middle-ring flame holes 402, the wall thickness between adjacent two holes can be 1 mm to 3 mm.

[0167] It can be understood that if the wall thickness exceeds 3 mm, the distance between adjacent flame holes will be too far. This may result in too large a gap between the flames, and the combusted mixture cannot effectively flow from one flame hole to another, making it impossible to achieve a good flame stabilization effect, which may cause the flame to be unstable or extinguished, and it is difficult to achieve the continuity and stability of the flame.

[0168] If the wall thickness is less than 1 mm, the distance between adjacent flame holes will be too close. Such a design may cause problems in the manufacturing process, such as difficulty in processing, and is prone to penetration between the walls or structural instability. In addition, the too-thin wall may not be able to withstand the thermal stress generated during the combustion process, affecting the durability and safety of the burner.

[0169] By setting the wall thickness between 1 mm and 3 mm, the burner can achieve a balance between the manufacturing process and functionality. With such a setting, it not only helps to achieve the stability and continuity of the flame, but also helps to avoid problems such as difficulty in processing and structural instability, improving the structural strength and durability of the burner.

[0170] For example, the wall thickness between adjacent two holes can be set within any one of the ranges of 1 mm - 1.2 mm, 1.2 mm - 1.4 mm, 1.4 mm - 1.6 mm, 1.6 mm - 1.8 mm, 1.8 mm - 2 mm, 2 mm - 2.2 mm, 2.2 mm - 2.4 mm, 2.4 mm - 2.6 mm, 2.6 mm - 2.8 mm, 2.8 mm - 3 mm, so as to ensure that the combusted mixture can effectively flow to adjacent flame holes, achieve a good flame stabilization effect, and avoid problems such as difficulty in processing and structural instability.

[0171] In some embodiments, the number of the first protrusions 440 can be multiple. Each first protrusion 440 is provided with a middle-ring flame hole 402. The existence of multiple first protrusions 440 enables the middle-ring flame holes 402 to be distributed in a wider area. This distribution method can effectively increase the flame coverage range and ensure that heat can be evenly transferred to each part of the cooking appliance.

[0172] A plurality of first protrusions 440 may be spaced apart and distributed on the top of the connecting portion 430.

[0173] The middle-ring fire holes 402 provided on each first protrusion 440 may be in a group. By spacing apart the plurality of first protrusions 440, the spacing between each group of middle-ring fire holes 402 will not be too dense, and the air circulation around the flame will be smoother, which is conducive to the supply of secondary air, making the combustion process of each group of middle-ring fire holes 402 more complete, so as to avoid incomplete combustion or unstable flame caused by insufficient air.

[0174] In contrast, if the middle-ring fire holes 402 are too dense, it may cause the flames to merge with each other, reducing the contact area between the flame and the air, thus being disadvantageous to the supply of secondary air.

[0175] It should be noted that the supply of secondary air refers to the process of replenishing air to the flame area that has been ejected through the fire holes and ignited during the combustion process.

[0176] Specifically, the primary air is mainly used to mix with the gas to form a mixed gas, while the secondary air is the air that continues to be supplied to the flame area after the flame has been ignited. This supply helps the flame to burn more completely, reduces the equivalence ratio in the main combustion zone, and realizes lean-premixed combustion, thereby improving the overall combustion efficiency.

[0177] Exemplarily, on the first protrusion 440, the number of the first middle-ring fire holes 4021 in the middle-ring fire holes 402 may be one, and the number of the second middle-ring fire holes 4022 may be two.

[0178] The combination of one first middle-ring fire hole 4021 and two second middle-ring fire holes 4022 can provide a flame distribution method that combines concentration and dispersion. The first middle-ring fire hole 4021 provides a concentrated point, while the second middle-ring fire holes 4022 are distributed around it, and a wider flame coverage can be formed.

[0179] The first middle-ring fire hole 4021 and the second middle-ring fire holes 4022 may be distributed in the shape of an isosceles triangle. This distribution method helps to form a stable flame structure, reduce flame fluctuations and instability, so as to form a uniform heat distribution between the inner-ring flame and the outer-ring flame, and the flame can cover the bottom of the cookware more evenly, improving the combustion efficiency and heat transfer efficiency.

[0180] Combined Figure 3 As shown, in some embodiments, the outer-ring fire cap 400 may further include a second protrusion 450, and the second protrusion 450 is provided on the top of the connecting portion 430.

[0181] The second protrusion 450 is a protrusion structure disposed on the top of the connection portion 430, which can enhance the structural stability of the entire outer ring fire cover 400 and ensure durability under high temperature conditions.

[0182] The second protrusions 450 and the first protrusions 440 may be arranged alternately, and a guide channel 404 may be formed between adjacent second protrusions 450 and first protrusions 440 .

[0183] The first end of the guide channel 404 may be in communication with the outer side of the outer ring fire cover 400 , and the second end of the guide channel 404 may be in communication with a side of the outer ring fire cover 400 close to the inner ring fire cover 300 .

[0184] The guide channel 404 helps to guide the combustion mixture to flow between the middle ring fire holes 402 and the outer ring fire holes 401, thereby optimizing the combustion process.

[0185] By directing the flow of the combustion mixture, a continuous supply of gas and air can be provided, which helps to form a stable flame and effectively prevents the flame from being extinguished, especially under the influence of wind or other external factors.

[0186] In addition, the flow of the combustion mixture can also improve combustion efficiency, ensure complete combustion of the fuel gas, and reduce the emission of unburned gases.

[0187] Specifically, by arranging the first protrusions 440 and the second protrusions 450 arranged alternately on the top of the connecting portion 430 and forming a guide channel 404, not only can the flow of the combustion mixture be optimized and the stability of the flame be enhanced, but also the combustion efficiency and the uniformity of heat distribution can be improved, so that the burner can be improved in terms of heating uniformity, combustion efficiency and flame stability, thereby improving the efficiency and effect of cooking to meet diverse cooking needs.

[0188] Combination Figure 3 As shown, in some embodiments, the outer ring fire hole 401 can be tilted relative to the horizontal plane, that is, there is an angle a between the axis of the outer ring fire hole 401 and the horizontal plane. The tilted outer ring fire hole 401 can change the spray direction of the flame, for example, making the flame contact the bottom of the pot more directly, thereby improving the thermal efficiency.

[0189] Among them, the height of one end of the outer ring fire hole 401 facing the gas channel can be lower than the height of one end of the outer ring fire hole 401 away from the gas channel, that is, the height of the end of the outer ring fire hole 401 where the fire comes out is higher and closer to the bottom of the pot.

[0190] The flames ejected from the outer ring fire holes 401 can be ejected at a more effective angle to point more directly to the bottom of the pot, shortening the distance between the flames and the bottom of the pot. This design helps to reduce the loss of heat during the transfer process, ensures that the heat is more concentratedly transferred to the bottom of the pot, and improves thermal efficiency.

[0191] It is understandable that the angle of the included angle a should not be too large, otherwise it may lead to too small a flow path and too fast a gas flow rate. This situation may cause incomplete combustion, generate excessive carbon monoxide, and pose a potential hazard to the health of users.

[0192] At the same time, the angle of the included angle a should not be too small either, otherwise it may cause the flame ejected from the outer ring flame holes 401 to be far from the bottom of the pot, resulting in a large amount of heat loss during the heat transfer process and reducing the thermal efficiency.

[0193] For example, the angle a between the axis of the outer ring flame holes 401 and the horizontal plane can be set within any one of the ranges of 40° - 42°, 42° - 44°, 44° - 46°, 46° - 50°, 50° - 52°, 52° - 54°, 54° - 56°, 56° - 58°, 58° - 60°, so as to achieve a balance between improving the thermal efficiency and ensuring complete combustion. It can not only improve the thermal efficiency but also ensure the sufficiency of combustion and avoid harmful gas emissions caused by incomplete combustion.

[0194] Combined with Figure 3 and Figure 4 As shown, in some embodiments, the outer ring flame cover 400 may be provided with a first flame stabilizing slit 405.

[0195] The first flame stabilizing slit 405 can provide an additional channel, so that the mixed gas of gas and air can also flow out from the first flame stabilizing slit 405.

[0196] After the mixed gas flows out from the outer ring flame holes 401 and the first flame stabilizing slit 405, they collide with each other. By using the collision of the mixed gas to achieve the purpose of deceleration, the mixed gas can stably burn at the position of the outer ring flame holes 401. This stabilizing effect helps to prevent the flame from extinguishing or flickering, and ensures the continuity and stability of the combustion process.

[0197] Combined with Figure 8 As shown, the first flame stabilizing slit 405 is opened on the outer ring portion 410, and the first flame stabilizing slit 405 can communicate with the annular cavity 403 through several small holes. These small holes can separate the airflow of the mixed gas, and the airflow of two adjacent small holes can contact each other after reaching the first flame stabilizing slit 405, and a reflux area can be formed, which helps to promote the full mixing of air and gas in the mixed gas, thereby improving the combustion efficiency.

[0198] The first flame stabilizing slit 405 can communicate with the outer ring flame holes 401. When the heat intensity of the outer ring flame holes 401 is relatively large and the gas outlet speed is relatively fast, the connection between the first flame stabilizing slit 405 and the outer ring flame holes 401 can reduce the gas outlet speed of the outer ring flame holes 401, which helps to prevent the flame from detaching from the outer ring flame holes 401 (i.e., the flame separation phenomenon) due to too fast a gas outlet speed.

[0199] In addition, the first flame stabilizing slit 405 is communicated with the outer ring flame holes 401, which can also increase the gas flow rate of the first flame stabilizing slit 405, enhance the flame stabilizing effect of the first flame stabilizing slit 405, and reduce the probability of flame lift-off.

[0200] By providing the first flame stabilizing slit 405 on the outer ring burner cap 400 and communicating it with the outer ring flame holes 401, the burner can maintain the stability of the flame under high heat intensity and high gas outlet velocity, ensuring the stability and efficiency of the combustion process.

[0201] Combined Figure 9 and Figure 10 As shown, in some embodiments, the inner ring burner cap 300 may include an annular wall 310. The annular wall 310 may form a support structure of the inner ring burner cap 300, and the inner ring flame holes 301 may be provided on the annular wall 310, so that the gas can burn and emit fire on the circumferential side of the inner ring burner cap 300.

[0202] In some embodiments, the inner ring burner cap 300 may include a top cover 330. The top cover 330 covers the top of the annular wall 310, and the top cover 330 and the annular wall 310 may enclose a chamber 303 with an open bottom.

[0203] The chamber 303 may be communicated with the gas passage through the open bottom thereof to receive the mixed gas transported by the gas passage.

[0204] The inner ring flame holes 301 may be communicated with the chamber 303, and then the mixed gas in the chamber 303 can flow to each inner ring flame hole 301.

[0205] In some embodiments, the inner ring burner cap 300 is provided with a second flame stabilizing slit 302. The second flame stabilizing slit 302 can provide an additional channel, so that the mixed gas of gas and air can also flow out from the second flame stabilizing slit 302.

[0206] After the mixed gas flows out from the inner ring flame holes 301 and the second flame stabilizing slit 302, they collide with each other, and the collision of the mixed gas is used to achieve the purpose of deceleration, so that the mixed gas can stably burn at the position of the inner ring flame holes 301. This stabilizing effect helps to prevent the flame from extinguishing or flickering, ensuring the continuity and stability of the combustion process.

[0207] Combined Figure 10 As shown, the second flame stabilizing slit 302 is opened on the annular wall 310, and the second flame stabilizing slit 302 can be communicated with the chamber 303 through a plurality of small holes. These small holes can separate the air flow of the mixed gas, and the air flows of two adjacent small holes contact each other after reaching the second flame stabilizing slit 302, and a recirculation area can be formed, which helps to promote the full mixing of air and gas in the mixed gas, thereby improving the combustion efficiency.

[0208] In the radial direction of the inner ring burner cap 300, the second flame stabilizing slot 302 is inclined, that is, there is an angle b between the second flame stabilizing slot 302 and the horizontal plane.

[0209] Wherein, the height of the end of the second flame stabilizing slot 302 close to the axis of the inner ring burner cap 300 is lower than the height of the end of the second flame stabilizing slot 302 away from the axis of the inner ring burner cap 300, that is, the height of the end of the second flame stabilizing slot 302 where the mixed gas flows out is higher. When the mixed gas flows through the second flame stabilizing slot 302, the flow path is inclined upward.

[0210] With such a setting, the flow path of the gas can be increased, which helps to prevent the flame from detaching from the flame holes due to too fast gas outlet speed and ensure the stability of the flame.

[0211] The inclined second flame stabilizing slot 302 can also guide the flame and the combustion mixture to flow upward to the position where the inner ring flame holes 301 are located, and play a good role in stabilizing the flame of the inner ring flame holes 301.

[0212] For example, the angle b between the second flame stabilizing slot 302 and the horizontal plane can be set within any one of the ranges of 15° - 18°, 18° - 20°, 20° - 22°, 22° - 25°, 25° - 28°, 28° - 30° to optimize the combustion efficiency and heat transfer and achieve a more stable and efficient combustion process.

[0213] In some embodiments, the inner ring burner cap 300 can be provided with a brim 320. The brim 320 protrudes from the periphery of the top cover 330. The brim 320 helps to protect the flame near the inner ring flame holes 301 from being disturbed by external airflows, thereby reducing the probability of flame lift-off.

[0214] In addition, the brim 320 forms an obstruction at the top of the inner ring burner cap 300, which can effectively prevent the liquid or dirt overflowing when using a pointed-bottom pot from entering the inner ring flame holes 301. This helps to keep the inner ring flame holes 301 clean and reduce the frequency of cleaning and maintenance.

[0215] Combined Figures 2 to 4 As shown, in some embodiments, the gas passage can include a first gas passage 201. The inlet of the first gas passage 201 is communicated with the gas mixing chamber, and the outlet of the first gas passage 201 is communicated with the inner ring flame holes 301. Then the first gas passage 201 can supply gas specifically for the inner ring flame holes 301, can better control the intensity and stability of the inner ring flame, and ensure the stability and efficiency of the inner ring flame.

[0216] In some embodiments, the gas channel may include a second gas channel 202. The inlet of the second gas channel 202 communicates with the gas mixing chamber, and the outlet of the second gas channel 202 communicates with the outer ring flame holes 401 and the middle ring flame holes 402. Then, the second gas channel 202 can provide gas supply for the outer ring flame holes 401 and the middle ring flame holes 402, ensuring the stability and efficiency of the outer ring and middle ring flames, enabling a more uniform and efficient flame distribution, and contributing to improving the overall heating efficiency and the stability of the flame.

[0217] In some embodiments, the gas mixing chamber may include a first gas mixing chamber 101; the inlet of the first gas channel 201 communicates with the opening of the first gas mixing chamber 101. The first gas mixing chamber 101 can specifically provide mixed gas for the inner ring flame holes 301, facilitating the optimization of the mixing ratio of gas and air for the combustion area of the inner ring burner cap 300.

[0218] In some embodiments, the gas mixing chamber may include a second gas mixing chamber 102; the inlet of the second gas channel 202 communicates with the opening of the second gas mixing chamber 102. The second gas mixing chamber 102 can specifically provide mixed gas for the outer ring flame holes 401 and the middle ring flame holes 402, facilitating the optimization of the mixing ratio of gas and air for the combustion area of the outer ring burner cap 400.

[0219] Specifically, the burner provided by the embodiments of the present application can achieve independent and efficient gas supply for the inner ring flame holes 301, the outer ring flame holes 401, and the middle ring flame holes 402. The independent gas channel design improves the flexibility of the burner and can adjust the intensity and distribution of the flame according to different cooking requirements.

[0220] In some embodiments, the number of the second gas channels 202 is multiple, and the multiple second gas channels 202 are spaced apart along the circumferential side of the first gas channel 201. The multiple second gas channels 202 can enable the gas to enter the annular chamber 403 more uniformly and be distributed to the outer ring flame holes 401 and the middle ring flame holes 402, contributing to forming a uniform flame coverage, improving the combustion efficiency and stability of the outer ring and the middle ring flame holes 402, and enhancing the uniformity and efficiency of heating.

[0221] Combined with Figure 4 As shown in the figure, in some embodiments, the second gas channel 202 may be inclined, that is, there is an included angle c between the second gas channel 202 and the horizontal plane.

[0222] Wherein, the height of the inlet of the second gas channel 202 is lower than the height of the outlet of the second gas channel 202. In the flow direction of the mixed gas, the second gas channel 202 is inclined upward.

[0223] When the mixed gas flows through the second gas passage 202 which is inclined, due to the increase in the flow path and the action of gravity, the flow velocity of the gas will be reduced. When the gas reaches the inside of the outer ring burner cap 400, this deceleration effect can alleviate the generation of eddy currents or turbulence caused by the sudden change in the channel cross-section.

[0224] By reducing these unstable flow phenomena, the stability of the gas flow is maintained, thereby effectively reducing the energy loss during the gas flow process, and more effectively delivering the fuel gas to the burner holes to ensure the sufficiency of combustion and the stability of the flame.

[0225] For example, the included angle c between the second gas passage 202 and the horizontal plane can be set within any one of the ranges of 15° - 18°, 18° - 20°, 20° - 22°, 22° - 25°, 25° - 28°, 28° - 30° to maintain the stability of the gas flow and reduce the energy loss during the gas flow process.

[0226] In some possible implementation manners, the burner provided by the embodiment of the present application includes a burner head 100. The burner head 100 is provided with a gas mixing chamber having an opening. The gas mixing chamber of the burner head 100 can be used to receive the mixture of fuel gas and air, and the fuel gas and air can be pre-mixed in the gas mixing chamber, which helps to ensure an appropriate ratio of fuel gas to air during combustion, thereby improving the combustion efficiency and the stability of the flame.

[0227] In some embodiments, the burner includes a gas distribution plate 200. The gas distribution plate 200 has gas passages, and the inlet of the gas passages is communicated with the opening of the gas mixing chamber. The gas distribution plate 200 can effectively distribute the mixed gas to the inner ring burner cap 300 and the outer ring burner cap 400 through its gas passages, and further distribute it to each burner hole to ensure the uniformity and stability of the flame.

[0228] In some embodiments, the burner includes an inner ring burner cap 300. The inner ring burner cap 300 is covered on the gas distribution plate 200. The inner ring burner cap 300 can be arranged in the middle of the gas distribution plate 200 to correspond to the middle of the bottom of the cookware.

[0229] The inner ring burner cap 300 is provided with inner ring burner holes 301. The inner ring burner cap 300 provides the flame in the central area through the inner ring burner holes 301, so that the burner can provide a concentrated heating effect in the central area, which is suitable for small cookware or cooking tasks that require concentrated heating.

[0230] The inner ring burner holes 301 are communicated with the outlet of the gas passage. The gas passage can transport the mixed gas in the gas mixing chamber to the inner ring burner holes 301, which can ensure the effective supply of fuel gas at the inner ring burner holes 301 to prevent the flame from being unstable or extinguished due to uneven gas supply.

[0231] In some embodiments, the burner includes an outer ring burner cap 400, and the outer ring burner cap 400 is disposed on the gas distribution plate 200. The outer ring burner cap 400 is located outside the inner ring burner cap 300. The outer ring burner cap 400 can provide flame coverage for the surrounding area outside the inner ring burner cap 300.

[0232] In some embodiments, the outer ring burner cap 400 is provided with outer ring flame holes 401, and the outer ring flame holes 401 can be disposed on the outer peripheral side of the outer ring burner cap 400. The outer ring burner cap 400 provides flames for the peripheral area through the outer ring flame holes 401, expanding the flame coverage range, enabling the burner to adapt to larger area cooking requirements.

[0233] The outer ring flame holes 401 communicate with the gas outlet of the gas passage. The gas passage can transport the mixed gas in the gas mixing chamber to the outer ring flame holes 401, which can ensure the effective supply of gas at the outer ring flame holes 401, so as to avoid unstable flames or flameout caused by uneven gas supply.

[0234] In some embodiments, the outer ring burner cap 400 can be provided with middle ring flame holes 402, and the middle ring flame holes 402 can be disposed facing outside the inner ring burner cap 300.

[0235] The middle ring flame holes 402 help to fill the gap of the flame between the inner ring flame holes 301 and the outer ring flame holes 401, increasing the flame coverage range, avoiding the area between the inner ring burner cap 300 and the outer ring burner cap 400 from having a cold zone due to lack of flame, and providing a more uniform heating effect.

[0236] The middle ring flame holes 402 communicate with the gas outlet of the gas passage. The gas passage can transport the mixed gas in the gas mixing chamber to the middle ring flame holes 402, which can ensure the effective supply of gas at the middle ring flame holes 402, so as to avoid unstable flames or flameout caused by uneven gas supply.

[0237] In some embodiments, the middle ring flame holes 402 can include first middle ring flame holes 4021. The outer ring burner cap 400 forms a transition flame layer between the outer circle flame and the inner circle flame through the first middle ring flame holes 4021, increasing the flame coverage range to provide a more uniform heating effect.

[0238] In some embodiments, the middle ring flame holes 402 can include second middle ring flame holes 4022, and the second middle ring flame holes 4022 are disposed below the first middle ring flame holes 4021.

[0239] The second middle ring flame holes 4022 are disposed below the first middle ring flame holes 4021, and the first middle ring flame holes 4021 and the second middle ring flame holes 4022 are arranged in upper and lower layers, which can provide flames at different heights, enhance the uniformity of heat distribution, enabling the burner to provide a more three-dimensional heating effect, especially suitable for cooking scenarios that require multi-level heating.

[0240] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present application.

[0241] For the sake of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. According to the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, so that those skilled in the art can better use the embodiments and various different modified embodiments suitable for specific use considerations.

Claims

1. A burner, characterized in that: include: A burner head, forming a gas mixing chamber with an opening; A gas distribution plate is covered on the burner head, the gas distribution plate has a gas channel, and the gas inlet of the gas channel is connected to the opening of the gas mixing chamber; An inner ring fire cover, which is disposed on the gas distribution plate, and the inner ring fire cover is provided with an inner ring fire hole, and the inner ring fire hole is communicated with the gas outlet of the gas channel; The outer ring fire cover is arranged on the gas distribution plate and is located outside the inner ring fire cover. The outer ring fire cover is provided with: An outer ring fire hole is arranged on the outer peripheral side of the outer ring fire cover; The middle ring fire hole is arranged toward the outside of the inner ring fire cover, and the middle ring fire hole includes: First middle ring fire hole; A second middle ring fire hole, wherein the second middle ring fire hole is arranged below the first middle ring fire hole; the outer ring fire holes and the middle ring fire holes are both connected to the gas outlet of the gas channel.

2. The burner according to claim 1, characterized in that There is a first angle between the axis of the first middle ring fire hole and the horizontal plane; And / or, a second angle is formed between the axis of the second center ring fire hole and the horizontal plane.

3. The burner according to claim 1, characterized in that The outer ring fire cover comprises: An outer ring portion, wherein the outer ring fire hole is arranged on the outer ring portion; An inner ring portion, arranged inside the outer ring portion, the inner ring portion and the outer ring portion being coaxial; A connecting portion connected between the outer ring portion and the inner ring portion; A first raised portion, arranged at the top of the connecting portion, and the middle ring fire hole is arranged at the first raised portion; The outer ring portion, the inner ring portion and the connecting portion are arranged to form an annular cavity with an open bottom, the outer ring fire hole and the middle ring fire hole are both connected to the annular cavity, and the annular cavity is connected to the gas outlet of the gas channel through the open hole.

4. The burner according to claim 3, characterized in that The first protrusion has an inclined surface on the side facing the inner ring fire cover, the height of the inclined surface close to one end of the inner ring fire cover is lower than the height of the inclined surface away from one end of the inner ring fire cover, and the middle ring fire hole is arranged on the inclined surface.

5. The burner according to claim 3, characterized in that In the middle ring fire holes, the hole wall thickness between two adjacent holes is 1 mm to 3 mm.

6. The burner according to claim 3, characterized in that There are multiple first protrusions, and the multiple first protrusions are distributed at intervals on the top of the connecting portion.

7. The burner according to claim 6, characterized in that The outer ring fire cover further includes a second protrusion, which is arranged on the top of the connecting portion; The second protrusions and the first protrusions are arranged alternately, and a flow guide channel is formed between adjacent second protrusions and first protrusions.

8. The burner according to any one of claims 1 to 7, characterized in that: The outer ring fire holes are arranged obliquely relative to a horizontal plane, and a height of one end of the outer ring fire holes facing the gas channel is lower than a height of one end of the outer ring fire holes away from the gas channel.

9. The burner according to claim 8, characterized in that The outer ring fire cover is provided with a first flame stabilizing slit, and the first flame stabilizing slit is communicated with the outer ring fire hole; And / or, the inner ring fire cover is provided with a second flame stabilizing slot; in the radial direction of the inner ring fire cover, the second flame stabilizing slot is inclined, and the height of the second flame stabilizing slot close to one end of the inner ring fire cover axis is lower than the height of the second flame stabilizing slot away from the one end of the inner ring fire cover axis.

10. A burner, characterized in that: include: The burner head forms a gas mixing chamber with an opening, and the gas mixing chamber is used to mix the introduced fuel gas and air to form a mixed gas; A gas distribution plate having a gas passage; The inner ring fire cover is provided with an inner ring fire hole, and the inner ring fire hole is communicated with the gas channel; The outer ring fire cover is located outside the inner ring fire cover, and the outer ring fire cover is provided with: An outer ring fire hole is arranged on the outer peripheral side of the outer ring fire cover; The middle ring fire hole is arranged toward the inner ring fire cover, and the middle ring fire hole includes: First middle ring fire hole; a second middle ring fire hole, wherein the second middle ring fire hole is arranged below the first middle ring fire hole; The gas distribution plate is used to transport the mixed gas to the inner ring fire cover and the outer ring fire cover through the gas channel, so that the flame formed by the combustion of the mixed gas can be ejected from the inner ring fire hole, the outer ring fire hole and the middle ring fire hole.

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