Gas supply structure for a burner, burner and gas hob

Abstract

The application relates to the technical field of gas stoves, and discloses a gas supply structure for a burner, which comprises a gas distribution assembly, an air inlet assembly and a switching device. The gas distribution assembly comprises air inlet channels and air distribution channels, and at least one air inlet channel is connected to an air distribution channel located in a non-adjacent ring line. The air inlet assembly comprises air inlet pipes corresponding to the air inlet channels and the switching device. The switching device is used for controlling the conduction or shutdown of the air inlet pipes, so as to adjust the gas supply state of the air distribution channels to the burner. The gas supply structure can meet various cooking requirements, effectively improve the heating uniformity and reduce the complexity of operation. The application further provides a burner and a gas stove.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas stoves, for example to a gas supply structure for a burner, a burner and a gas stove. BACKGROUND

[0002] Nowadays, gas stoves have been popularized into the kitchen environment of thousands of households as a convenient and fast cooking appliance. The burner of the gas stove can use liquefied petroleum gas, artificial gas, natural gas and other gaseous fuels for direct fire heating, thereby rapidly heating the cooking utensils. In terms of the existing burner components, generally include the burner (covering the burner head, gas distribution disc and fire cover, etc.), control valve, igniter, ejector pipe, etc., and the working process is that the gas supplied by the external gas pipe or gas tank is transported to the burner through the control valve and the ejector pipe, and the igniter ignites the gas at the burner to generate heat. In this process, the control valve can adjust the flow of the delivered gas, thereby achieving control of the fire size.

[0003] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

[0004] The existing burner is mostly two-ring fire or three-ring fire, that is, the fire cover is provided with two or three circles of fire holes from inside to outside, and each circle of fire hole burns as a ring of fire. Each ring of fire corresponds to an independent gas supply flow path composed of a gas pipe, a burner head annular gas mixing chamber and an internal passage of a gas distribution disc. This structure design often cannot meet the heating needs in different cooking scenarios. For example, in the scenarios of frying and grilling that require uniform heating, different food quantities have different heating area needs. If the existing burner needs to adjust the fire of the inner and outer rings, it must control multiple control valves at the same time, and the user needs to perform multiple step adjustments. If only one control valve is adjusted, only the fire of the corresponding ring can be changed, and the fire of the other rings remains unchanged, which can easily cause uneven heating of the pot bottom and uneven heating of the food. SUMMARY

[0005] The following presents a simplified summary of some aspects of the disclosed embodiments in order to provide a basic understanding of such embodiments. This summary is not an extensive overview of the embodiments described in this disclosure, and is intended neither to identify key or critical elements of all embodiments nor to delineate the scope of any or all embodiments. Its sole purpose is to present some concepts of the disclosed embodiments in a simplified form as a prelude to the more detailed description that is presented later.

[0006] The following presents a simplified summary of some aspects of the disclosed embodiments in order to provide a basic understanding of such embodiments. This summary is not an extensive overview of the embodiments described in this disclosure, and is intended neither to identify key or critical elements of all embodiments nor to delineate the scope of any or all embodiments. Its sole purpose is to present some concepts of the disclosed embodiments in a simplified form as a prelude to the more detailed description that is presented later.

[0007] The embodiments of the present disclosure provide a gas supply structure for a burner, a burner and a gas stove, which can improve the heating uniformity in the process of adjusting the fire of the burner and reduce the complexity of operation.

[0008] In some embodiments, the gas supply structure for the burner comprises: a gas distribution assembly comprising gas inlet channels and gas distribution channels, at least one of the gas inlet channels being in communication with the gas distribution channels located at non-adjacent ring lines; a gas inlet assembly comprising switching devices and gas inlet pipes corresponding to the gas inlet channels; the switching devices are used to control the conduction or closing of the gas inlet pipes to adjust the gas supply state of the gas distribution channels to the burner.

[0009] In some embodiments, the burner comprises a fire cover, a burner head and the above-mentioned gas supply structure for the burner.

[0010] In some embodiments, the gas stove comprises the burner shown in the above-mentioned embodiments.

[0011] The gas supply structure for the burner, the burner and the gas stove provided by the embodiments of the present disclosure can achieve the following technical effects:

[0012] The burner provided by the embodiments comprises a burner head assembly and a gas distribution assembly. The gas inlet slots of the gas inlet channels are arranged in a staggered manner, so that the gas in the annular mixing chamber can enter the corresponding gas inlet channels and be distributed to the gas distribution channels on different ring lines. The gas in the same annular mixing chamber can be supplied to the gas distribution channels on non-adjacent ring lines. The gas distribution area and the gas distribution area are expanded, the diversity of the fire mode is increased, the flexibility of the heating area is increased, various cooking requirements can be met, and the heating uniformity is effectively improved and the operation complexity is reduced.

[0013] The general description above and the following description below are exemplary and explanatory only and are not intended to be limiting of the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0014] One or more embodiments are illustrated by way of example in the figures that are not intended to be limiting of the present disclosure. Identical reference numbers in the figures indicate identical elements, and:

[0015] Figure 1 is an exploded structural schematic view of a gas distribution disc provided by an embodiment of the present disclosure;

[0016] Figure 2 is an exploded structural schematic view of a gas distribution disc provided by an embodiment of the present disclosure;

[0017] Figure 3 is an exploded structural schematic view of a gas distribution disc provided by an embodiment of the present disclosure;

[0018] Figure 4 is an exploded structural schematic view of another gas distribution disc provided by an embodiment of the present disclosure;

[0019] Figure 5 is another exploded structural schematic view of a gas distribution disc provided by an embodiment of the present disclosure;

[0020] Figure 6 is a structural schematic view of a lower gas distribution disc of another gas distribution disc provided by an embodiment of the present disclosure;

[0021] Figure 7 is a structural schematic view of a lower gas distribution disc of another gas distribution disc provided by an embodiment of the present disclosure;

[0022] Figure 8 is another exploded structural schematic view of a gas distribution disc provided by an embodiment of the present disclosure;

[0023] Figure 9 is another exploded structural schematic view of a gas distribution disc provided by an embodiment of the present disclosure;

[0024] Figure 10 is another exploded structural schematic view of a gas distribution disc provided by an embodiment of the present disclosure;

[0025] Figure 11 is another exploded structural schematic view of a gas distribution disc provided by an embodiment of the present disclosure;

[0026] Figure 12 is a structural schematic view of a lower gas distribution disc of another gas distribution disc provided by an embodiment of the present disclosure;

[0027] Figure 13 is a structural schematic view of another gas distribution disc provided by an embodiment of the present disclosure;

[0028] Figure 14 is a structural schematic view of a combustor provided by an embodiment of the present disclosure;

[0029] Figure 15 is a structural schematic view of a gas supply structure for a combustor provided by an embodiment of the present disclosure;

[0030] Figure 16 is a schematic view of a communication relationship of a gas distribution disc in an embodiment of the present disclosure;

[0031] Figure 17 is a connection schematic view of a gas supply structure for a combustor provided by an embodiment of the present disclosure;

[0032] Figure 18 is another connection schematic view of a gas supply structure for a combustor provided by an embodiment of the present disclosure;

[0033] Figure 19 is a structural schematic view of a gas supply structure for a combustor provided by an embodiment of the present disclosure;

[0034] Figure 20is another structure explosion view of a gas supply structure for a burner provided by an embodiment of the present disclosure;

[0035] Figure 21 is a structure schematic view of a fire cover assembly of a burner provided by an embodiment of the present disclosure;

[0036] Figure 22 is a structure schematic view of a fire cover assembly of a burner provided by an embodiment of the present disclosure;

[0037] Figure 23 is a connection schematic view of a fire cover assembly and a gas distribution assembly of a burner provided by an embodiment of the present disclosure.

[0038] Reference signs:

[0039] 100, fire cover assembly; 101, first annular sub-fire cover; 102, second annular sub-fire cover; 103, center fire cover;

[0040] 200, gas distribution assembly; 2001, gas inlet channel; 2002, gas distribution channel; 201, inner ring gas inlet; 202, middle ring gas slot; 2021, middle ring gas inlet; 203, outer ring gas slot; 2031, outer ring gas inlet; 204, inner ring gas distribution port; 205, first gas distribution channel; 206, second gas distribution channel; 207, third gas distribution channel; 208, fourth gas distribution channel; 209, center gas distribution channel; 210, lower gas distribution disc; 211, lower disc body; 2111, disc wall; 212, inner ring member; 213, middle ring member; 214, outer ring member; 220, gas inlet partition member; 221, gas inlet cavity; 2211, outer side gas inlet channel; 2212, inner side gas inlet channel; 2213, second type gas inlet channel; 2214, third type gas inlet channel; 222, partition member; 230, first gas inlet partition; 231, first gas inlet channel; 2311, first radial gas inlet part; 2312, first circumferential gas inlet part; 232, second gas inlet channel; 233, center gas inlet channel; 2321, second radial gas inlet part; 2322, second circumferential gas inlet part; 240, first partition rib; 241, first arc segment; 242, first straight segment; 2421, first side first straight segment; 2422, second side first straight segment; 243, first bending segment; 244, second bending segment; 250, second partition rib; 251, second arc segment; 252, second straight segment; 260, third ring partition rib; 270, air supplement channel; 271, air supplement inlet; 272, inner side air inlet channel; 273, outer side air inlet channel; 274, air outlet side channel; 275, inner side air supplement outlet; 276, outer side air supplement outlet; 280, air deflector; 281, arc deflector; 282, straight plate; 290, upper gas distribution disc; 291, upper disc body; 292, matching member; 293, inner ring member; 294, first ring gas distribution member; 295, second ring gas distribution member; 296, third ring gas distribution member; 297, fourth ring gas distribution member; 298, slope structure; 2901, first gas outlet; 2902, second gas outlet; 2903, third gas outlet; 2904, fourth gas outlet;

[0041] 300, burner head assembly; 310, mixing cavity; 301, first ring mixing cavity; 302, second ring mixing cavity; 303, center ring mixing cavity; 320, ejector pipe;

[0042] 400, gas inlet assembly; 410, gas inlet pipe; 420, switching device; 401, first gas inlet pipe; 402, second gas inlet pipe; 403, center gas inlet pipe; 404, first control valve; 405, second control valve; 406, center control valve. DETAILED DESCRIPTION

[0043] In order to enable a more detailed understanding of the features and technical content of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure is described in detail below with reference to the accompanying drawings, which are only used for reference and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be simplified to facilitate the drawings.

[0044] The terms "first", "second", and the like in the specification and claims of the embodiments of the present disclosure and the above drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present disclosure described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0045] In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "back", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to indicating the orientation or positional relationship, the above-mentioned terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain attachment relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0046] In addition, the terms "set", "connected", "fixed" should be broadly understood. For example, "connected" can be fixedly connected, detachably connected, or integrally configured; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0047] Unless otherwise specified, the term "a plurality of" means two or more.

[0048] In the embodiments of the present disclosure, the character " / " represents an "or" relationship between the objects before and after it. For example, A / B represents: A or B.

[0049] The term "and / or" is a description of the association between objects, which means that there can be three relationships. For example, A and / or B, which means: A or B, or, A and B, the three relationships.

[0050] It should be noted that the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0051] Figure 14 is a structural schematic diagram of a burner provided by the present disclosure. As shown in Figure 14 , the burner is generally composed of a fire cap assembly 100 and a gas supply structure arranged below the fire cap assembly 100 for supplying gas to the burner. Among them, the gas supply structure is used to deliver external gas to the corresponding fire cap in the fire cap assembly 100.

[0052] Generally, the gas supply structure includes one or more of a gas distribution assembly 200, a burner head assembly 300, and a gas inlet assembly 400. Among them, the gas inlet assembly 400 is used to introduce external gas into the burner; the burner head assembly 300 is used to realize the mixing and pressurization of external gas and air; the gas distribution assembly 200 is used to distribute the gas introduced into the burner to the combustion gas path corresponding to the fire cap.

[0053] The existing burner is mostly two-ring fire or three-ring fire, that is, the fire cap is provided with two or three circles of fire holes from inside to outside, and each circle of fire hole burns as a ring fire, wherein each ring fire corresponds to an independent gas supply flow path composed of a gas inlet pipe, a burner head cavity and an internal passage of the gas distribution assembly. This structure design has a single out-of-fire form, and often it cannot meet the heating needs in different cooking scenes.

[0054] In order to realize the characteristics of stable gas supply, uniform heating and diversified out-of-fire form of the burner in the present embodiment, the present embodiment provides a gas supply structure for a burner. Figure 19 is a cross-sectional structural schematic diagram of the burner in the present embodiment, Figure 20 is a structural explosion schematic diagram of a gas supply structure for a burner provided by the present disclosure, Figure 16 is a schematic diagram of the communication relationship of the gas distribution assembly in the present embodiment. As shown in the figure, the gas supply structure includes a gas distribution assembly 200 and a burner head assembly 300. The burner head assembly 300 includes a plurality of annular gas mixing cavities 310 arranged concentrically; the gas distribution assembly 200 is arranged above the burner head assembly 300; the gas distribution assembly 200 includes a gas inlet passage 2001 and a gas distribution passage 2002, the gas inlet slot of the gas inlet passage 2001 is communicated with the corresponding annular gas mixing cavity 310, and at least one gas inlet passage 2001 is communicated with the gas distribution passage 2002 located in non-adjacent ring lines; the gas inlet slots of adjacent gas inlet passages 2001 are arranged on different ring lines at the bottom of the gas distribution assembly 200, and are arranged in a staggered manner corresponding to the corresponding annular gas mixing cavity 310.

[0055] Here, the gas distribution assembly 200 is arranged on the burner head assembly 300 to realize the distribution of the gas introduced into the burner to the combustion gas paths corresponding to the fire covers. The external gas enters the corresponding annular gas mixing chamber 310 in the burner head assembly, and after being uniformly mixed in the annular gas mixing chamber 310, the gas is rectified by the gas distribution assembly 200 and then enters the connected gas distribution channels to supply gas to the independent gas paths of the burners corresponding to the gas distribution channels.

[0056] The gas supply structure for the burner provided in the embodiment is used in cooperation of the burner head assembly 300 and the gas distribution assembly 200. By arranging the gas inlet slots of the gas inlet channels 2001 in a staggered manner, the gas in the annular gas mixing chamber 310 can enter the corresponding gas inlet channels 2001 and be distributed to the gas distribution channels 2002 on different annular lines. The gas in the same annular gas mixing chamber 310 can be supplied to the gas distribution channels 2002 on non-adjacent annular lines. The gas distribution area and the gas distribution area are expanded, the diversity of the fire output mode is increased, the flexibility of the heating area is increased, various cooking requirements can be met, and the heating uniformity is effectively improved and the operation complexity is reduced.

[0057] Optionally, the number of annular gas mixing chambers 310 corresponds to the number of gas inlet channels 2001. The gas inlet channels 2001 connected to the same gas distribution channel 2002 are connected to the same annular gas mixing chamber 310.

[0058] Optionally, the gas inlet slots of the gas inlet channels 2001 are arranged on the center side of the bottom of the gas distribution assembly 200. The gas distribution channels are arranged along different annular lines from the inside to the outside, so that the gas flows from the inside to the outside in the radial direction after entering the gas inlet channels from the gas mixing chamber and enters one or more gas distribution channels connected to the gas inlet channels. The gas distribution area and the gas distribution area are expanded, the diversity of the fire output mode is increased, the flexibility of the heating area is increased, various cooking requirements such as frying and grilling can be met, and the heating uniformity is effectively improved and the operation complexity is reduced.

[0059] In some embodiments, the gas inlet slots of the plurality of gas inlet channels 2001 are arranged on the center side of the gas distribution disc 200 and correspond to the positions of the respective annular gas mixing chambers. For example, the gas inlet channels 2001 include a first gas inlet channel and a second gas inlet channel, wherein the first gas inlet channel corresponds to the annular gas mixing chamber on the inner side of the burner head, and the second gas inlet channel corresponds to the annular gas mixing chamber on the outer side of the burner head. The annular line where the gas inlet slot of the first gas inlet channel is located is on the inner side of the annular line where the gas inlet slot of the second gas inlet channel is located.

[0060] Optionally, as shown in FIG. 8, the gas distribution assembly 200 includes a plurality of gas distribution channels 2002 arranged along different annular lines. Figure 20As shown, the annular mixing chamber 310 in the embodiment includes a center annular mixing chamber 303, a first annular mixing chamber 301, and a second annular mixing chamber 302, which are sequentially arranged from inside to outside, or the number of annular mixing chambers is set according to the number of gas inlet channels. In the embodiment, the first annular mixing chamber 301 is in communication with the first gas inlet channel 231, the second annular mixing chamber 302 is in communication with the second gas inlet channel 232, and the center annular mixing chamber 303 is in communication with the center gas inlet channel 233. In this way, the corresponding communication between the burner head assembly 300 and the gas distribution assembly 200 is achieved.

[0061] On the other hand, the number of annular mixing chambers 310 corresponds to the number of gas inlet pipes 410, and the gas inlet pipe 410 for supplying gas to the same gas distribution channel 2002 is in communication with the same annular mixing chamber 310 at the gas inlet end.

[0062] Optionally, the number of first gas inlet channels 231 and second gas inlet channels 232 is multiple, and they are arranged in groups in one-to-one correspondence; the multiple groups of first gas inlet channels 231 and second gas inlet channels 232 are uniformly arranged at equal arc intervals in the circumferential direction, so that the gas output by the gas distribution channel on each annular line can be more uniformly distributed in the circumferential direction, improving the stability of gas supply.

[0063] Optionally, the burner head assembly 300 further comprises a plurality of ejector pipes 320, which are arranged corresponding to the gas inlets of the annular mixing chamber 310. Generally, the ejector pipe 320 is used to mix high-energy gas and low-energy air uniformly to ensure the heat flow required by the burner.

[0064] Further, in order to realize the characteristics of stable gas supply, uniform heating, and diversified flame forms of the burner in the embodiment, a gas distribution assembly applied in the above-mentioned embodiments is also provided. Here, the gas distribution assembly 200 is constructed as a disc-shaped semi-closed shell body adapted to the oven cavity and the fire cover, and the gas inlet channels and the gas distribution channels are formed in the shell body. In the embodiments of the present application, the disc-shaped shell body is referred to as a gas distribution disc.

[0065] Generally, the gas distribution disc is used in cooperation with the burner head assembly 300 and the fire cover assembly 100, and one optional assembly method is to arrange the gas distribution disc between the burner head 300 and the fire cover assembly 100 and construct it as an intermediate flow path of gas (or mixed gas of air and gas) that communicates both, so that the gas flows into the fire cover assembly 100 after entering the gas distribution disc from the burner head 300, and is finally ignited at the fire hole of the fire cover assembly 100 to form a flame.

[0066] Here, to improve the heating area and heating uniformity of the combustor to the container above the fire cover assembly 100, optionally, the fire cover is generally composed of two or more annular sub-fire covers, different annular sub-fire covers are coaxially arranged and sequentially sleeved from inside to outside, a plurality of fire holes are arranged on each annular sub-fire cover, and the plurality of fire holes are uniformly arranged along the circumference of the annular sub-fire cover, so that the plurality of fire holes on each annular sub-fire cover can form an annular flame, and the plurality of annular flames can heat the container at the respective ring line positions.

[0067] Optionally, the same annular sub-fire cover is provided with one or more groups of fire holes located at different ring lines, and each group of fire holes can form an annular flame on the annular sub-fire cover.

[0068] Correspondingly, the gas distribution disc 200 has a plurality of gas flow channels for the flow of fuel gas. After the fuel gas enters the gas distribution disc 200 through the burner head, it can flow through the plurality of gas flow channels and be finally distributed to the respective annular sub-fire covers of the fire cover to supply gas to the fire holes at different annular positions. In this embodiment, the burner head has a plurality of annular gas mixing chambers that are independent of each other and are coaxially arranged and sequentially sleeved from inside to outside. Each annular gas mixing chamber is connected to one or more gas flow channels of the gas distribution disc. That is, the gas supply state of each annular gas mixing chamber in the burner head can determine whether fuel gas is supplied in the corresponding one or more gas flow channels, thereby affecting whether a flame can be formed on the corresponding annular sub-fire cover.

[0069] For example, if there is no fuel gas supply in a certain annular gas mixing chamber, there is no fuel gas flowing in the corresponding gas flow channel, so that no flame can be formed on the ring line of the corresponding annular sub-fire cover. Conversely, if there is fuel gas supply in the annular gas mixing chamber, a flame can be formed on the ring line of the corresponding annular sub-fire cover. At the same time, the flow rate of the fuel gas from the annular gas mixing chamber can also determine the size of the flame formed on the corresponding annular sub-fire cover. Generally, the flow rate of the fuel gas is positively correlated with the size of the flame. Therefore, by adjusting the gas supply state of the annular gas mixing chamber, the formation of the flame and the size of the flame can be controlled.

[0070] The present disclosure provides a gas distribution disc 200, which includes an intake portion and a gas distribution portion that are in communication with each other. The intake portion can be used to communicate with the annular gas mixing chamber to introduce the fuel gas from the annular gas mixing chamber into the gas distribution disc 200 and deliver it to the gas distribution portion. The gas distribution portion can be used to communicate with the fire cover to supply the fuel gas introduced by the intake portion to the corresponding annular sub-fire cover.

[0071] In the embodiment, the gas inlet part includes a plurality of gas inlet channels 2001, each of which extends from the inside to the outside. For example, in the structure of the gas distribution disc 200 shown in the figure, the gas inlet channel 2001 extends from the center (or near the center) to the outer circumferential direction. In the embodiment, an optional extension direction is along the radial direction of the gas distribution disc.

[0072] Generally, the inside and outside extension lengths of the gas inlet channel 2001 are determined by the corresponding ring-shaped mixing chamber of the burner head and / or the ring line position of the ring-shaped sub-burner cover, so as to ensure that the gas inlet channel 2001 can at least communicate with the corresponding ring-shaped mixing chamber of the burner head and at least deliver gas to the ring line position of one or more corresponding ring-shaped sub-burner covers.

[0073] In the embodiment, the gas distribution part includes gas distribution channels 2002 located at different ring lines from the inside to the outside, and some or all of the gas distribution channels 2002 on the non-adjacent ring lines are communicated with the same gas inlet channel 2001.

[0074] The gas distribution disc provided in the embodiment communicates some or all of the gas distribution channels 2002 on the non-adjacent ring lines of the gas distribution part with the same gas inlet channel 2001, so that at least one gas inlet channel 2001 can respectively deliver gas to the respective fire hole rings of the gas distribution channels 2002 on different ring lines. When the gas flow of the gas inlet channel 2001 changes, the gas of the corresponding gas distribution channel 2002 and fire hole ring will also change synchronously. Since the ring lines of the fire hole rings corresponding to the same gas inlet channel 2001 are at different inside and outside heating positions, the adjustment of the gas flow of a single gas inlet channel 2001 can simultaneously achieve synchronous adjustment of the firepower at the inside and outside heating positions, thereby effectively improving the heating uniformity and reducing the complexity of operation.

[0075] Optionally, the number of ring lines of the gas distribution channels 2002 is consistent with the number of fire hole ring lines on the burner cover, and the ring line positions of the gas distribution channels 2002 correspond to the positions of the fire hole ring lines, so that each gas distribution channel 2002 can deliver gas to a group of fire holes at the corresponding position.

[0076] Optionally, the number of gas distribution channels 2002 corresponding to each ring line is one or more, and the gas distribution channels 2002 corresponding to the same ring line are uniformly distributed along the ring line, so that the gas can enter the ring-shaped sub-burner cover from the gas distribution channels 2002 at different positions of the ring line more uniformly, thereby ensuring the uniformity and stability of the firepower distribution of the formed flame.

[0077] In an optional embodiment, the gas distribution disc 200 is integrally constructed as a disc-shaped semi-closed shell body compatible with the ring-shaped mixing chamber and the burner cover, and the gas inlet part and the gas distribution part are formed in the shell body.

[0078] Optionally, the air inlet channel 2001 is formed inside the shell, and one or more air inlet slots for connecting the annular gas mixing chamber are formed on the bottom surface of the shell; optionally, each air inlet channel 2001 corresponds to an independent air inlet slot, so that each air inlet channel 2001 can be connected to the annular gas mixing chamber through the air inlet slot, and the gas enters the air inlet channel from the annular gas mixing chamber through the air inlet slot.

[0079] In some embodiments, the air inlet slots of the plurality of air inlet channels 2001 are arranged on the side of the center of the gas distribution disc 200 and correspond to the positions of the respective annular gas mixing chambers. For example, the air inlet channels 2001 include a first air inlet channel and a second air inlet channel, wherein the first air inlet channel corresponds to the annular gas mixing chamber on the inner side of the burner head, and the second air inlet channel corresponds to the annular gas mixing chamber on the outer side of the burner head, and the annular line where the air inlet slot of the first air inlet channel is located is arranged on the inner side of the annular line where the air inlet slot of the second air inlet channel is located.

[0080] Figure 1 、 Figure 4 、 Figure 6 and Figure 8 In the structure of the gas distribution disc 200 shown in FIG. 11, the air inlet slots of the air inlet channels 2001 are arranged on the side of the center of the gas distribution disc 200, which is defined as the first type of air inlet channel, i.e., the air inlet end of the first type of air inlet channel is arranged on the side of the center, and the air outlet end is arranged on the side of the circumference, and the main flow direction of the gas flowing through the gas distribution disc after entering the gas distribution disc 200 is from the side of the center to the side of the circumference.

[0081] In some embodiments, the air inlet channel 2001 can also be a second type of air inlet channel 2213 and / or a third type of air inlet channel 2214, as shown in FIG. 12. Figure 13

[0082] Here, the air inlet end of the second type of air inlet channel 2213 is arranged on the side of the circumference, and the air outlet end at least includes the side of the center, i.e., the main flow direction of the gas flowing through the gas distribution disc via the second type of air inlet channel 2213 is from the side of the circumference to the side of the center.

[0083] The air inlet end of the third type of air inlet channel 2214 is arranged on the middle ring, and the air outlet end at least includes the side of the center and the side of the circumference, i.e., the main flow direction of the gas flowing through the gas distribution disc via the third type of air inlet channel 2214 is from the middle ring position to the side of the center and the side of the circumference.

[0084] ​The gas inlet ends of the second type of gas inlet passage 2213 and the third type of gas inlet passage 2214 are arranged close to the outer circumferential side, which can shorten the flow distance of the gas flowing from the gas inlet end to the outer circumferential side. Since the outer circumferential side requires more gas, the pressure loss of the gas flowing in the gas inlet passage can be reduced. In addition, due to the reduction of the flow path, the speed of the gas flowing to the outer ring side of the burner after the valve is opened can be shortened, and the ignition response speed of the burner when the outer ring side of the burner is ignited can be improved.

[0085] The gas distribution disc provided in the embodiment is provided with one or more different gas inlet passage structures, so that the gas can flow through the gas distribution disc in different inlet and outlet flow paths, and then be delivered to the gas distribution passages of the corresponding different ring lines. Different gas inlet passage structures can be adapted to the differentiated gas supply requirements of two or more gas distribution passages, improve the uniformity of gas distribution to different gas distribution passages, and the stability of gas flow and pressure, so as to effectively guarantee the combustion effect of the gas stove.

[0086] Optionally, as shown in FIG. 9, the gas inlet passage is constructed as a central-symmetrical structure. Here, the gas inlet passage is in communication with each position of the same gas inlet passage and shares the same gas inlet end. The gas flows into the gas inlet passage through the same gas inlet end, and then flows to each position of the gas inlet passage. Figure 13

[0087] In addition, for the gas distribution disc provided with the above two or more gas inlet passages, such as a gas distribution disc provided with the first type of gas inlet passage and the second type of gas inlet passage 2213, or a gas distribution disc provided with the first type of gas inlet passage, the second type of gas inlet passage 2213 and the third type of gas inlet passage 2214; different gas inlet passages are arranged alternately in the circumferential direction to ensure the combustion uniformity of the different types of gas inlet passages.

[0088] Optionally, for the second type of gas inlet passage 2213 and the third type of gas inlet passage 2214, since the distance between the gas inlet end and the gas distribution disc is far, if the sleeve type annular mixing chamber gas supply mode is still used, there may be a problem that the gas inlet end cannot correspond to the position of the annular mixing chamber. Therefore, in some embodiments, the plurality of injection pipes 320 of the burner can be arranged in one-to-one correspondence with the different gas inlet passages of the gas distribution disc, so as to supply gas to the corresponding gas inlet passage through the injection pipe 320.

[0089] Optionally, the gas inlet end of the gas inlet passage is constructed to be matched with the caliber of the gas outlet of the injection pipe 320.

[0090] ​Generally, the axes of the ejectors 320 are located in the same plane, so as to reduce the structural interference between the ejectors 320 in the arrangement in which the ejectors 320 are directly connected to the gas distribution disc, at least two of the ejectors 320 are arranged at an angle, and the angle can be 20°, 60°, 90°, 120°, etc.

[0091] As shown in the example of FIG. 6, the three ejectors 320 are arranged in parallel, and the two ejectors 320 supply gas to the central gas inlet channel and the third type of gas inlet channel. Due to the position of the gas inlet end of the second type of gas inlet channel corresponding to the third ejector, the third ejector 320 arranged in parallel with the other two ejectors 320 will interfere with the ejector 320 supplying gas to the central gas inlet channel. Therefore, the third ejector 320 is arranged at an angle of 90° with respect to the other two ejectors 320. Figure 13 As shown in the example of FIG. 6, the three ejectors 320 are arranged in parallel, and the two ejectors 320 supply gas to the central gas inlet channel and the third type of gas inlet channel. Due to the position of the gas inlet end of the second type of gas inlet channel corresponding to the third ejector, the third ejector 320 arranged in parallel with the other two ejectors 320 will interfere with the ejector 320 supplying gas to the central gas inlet channel. Therefore, the third ejector 320 is arranged at an angle of 90° with respect to the other two ejectors 320.

[0092] The gas distribution disc of the embodiment of the present disclosure generally includes a lower gas distribution disc 210 and an upper gas distribution disc 290, and the lower gas distribution disc 210 and the upper gas distribution disc 290 are sealingly connected to prevent gas leakage. Alternatively, after the two are buckled, a threaded connection or a welding connection can be used.

[0093] Alternatively, the connecting end surface of the lower gas distribution disc 210 and the upper gas distribution disc 290 is a plane, which improves the sealing of the connection.

[0094] Alternatively, the lower gas distribution disc 210 is a casting or a forged piece.

[0095] In the embodiment of the present disclosure, according to the structure of the lower gas distribution disc 210, the provided gas distribution disc is mainly divided into three types.

[0096] As shown in the example of FIG. 6, the three ejectors 320 are arranged in parallel, and the two ejectors 320 supply gas to the central gas inlet channel and the third type of gas inlet channel. Due to the position of the gas inlet end of the second type of gas inlet channel corresponding to the third ejector, the third ejector 320 arranged in parallel with the other two ejectors 320 will interfere with the ejector 320 supplying gas to the central gas inlet channel. Therefore, the third ejector 320 is arranged at an angle of 90° with respect to the other two ejectors 320.

[0097] Figures 1-3 As shown in the example of FIG. 6, the three ejectors 320 are arranged in parallel, and the two ejectors 320 supply gas to the central gas inlet channel and the third type of gas inlet channel. Due to the position of the gas inlet end of the second type of gas inlet channel corresponding to the third ejector, the third ejector 320 arranged in parallel with the other two ejectors 320 will interfere with the ejector 320 supplying gas to the central gas inlet channel. Therefore, the third ejector 320 is arranged at an angle of 90° with respect to the other two ejectors 320.

[0098] ​The first type of gas distribution disc of the embodiments of the present disclosure, by setting the gas inlet partition on the lower gas distribution disc 210, the gas entering from one gas inlet on the lower gas distribution disc 210 can be distributed to the gas distribution channels on different ring lines on the upper gas distribution disc 290, which expands the gas distribution area and the gas distribution flexibility, increases the diversity of the fire mode and the flexibility of the heating area, and can meet various cooking needs, such as frying and grilling.

[0099] In some embodiments, the lower gas distribution disc 210 includes a lower disc body 211, one or more gas inlet partition members, and a partition member 222. The lower disc body 211 has an inner ring gas inlet 201 and a plurality of annular gas inlets. Each gas inlet partition member has a gas inlet cavity 221 and is arranged on the lower disc body 211 in the radial direction of the lower disc body 211. The partition member 222 is arranged in the gas inlet cavity 221 of the gas inlet partition member and divides the gas inlet cavity 221 into a plurality of gas inlet channels. One gas inlet channel corresponds to one annular gas inlet of the lower disc body 211.

[0100] In the present embodiment, the burner head further includes an annular gas mixing cavity at the center, and the inner ring gas inlet 201 is a central gas inlet channel of the gas distribution disc communicating with the annular gas mixing cavity. The central gas inlet channel is formed along the central axis of the gas distribution disc, with the lower end being a gas inlet end and the upper end being a gas outlet end. The direction of the gas flow is from bottom to top.

[0101] In the present embodiment, the number of annular gas inlets of the lower disc body 211 is consistent with the number of gas inlet channels divided by the gas inlet partition member, and one gas inlet channel corresponds to one annular gas inlet. Therefore, the gas entering each annular gas inlet flows into the gas distribution channels on non-adjacent ring lines through the corresponding gas inlet channel, realizing one-to-many gas distribution and increasing the flexibility of gas distribution.

[0102] In some embodiments, the lower disc body 211 includes a disc wall 2111 and a plurality of annular members. The disc wall 2111 has a through hole at the center, and the plurality of annular members are arranged concentrically on the disc wall 2111 to form the inner ring gas inlet 201 and the plurality of annular gas inlets. In the present embodiment, the innermost annular member surrounds the through hole on the disc wall 2111 to form the inner ring gas inlet 201, and the remaining annular members are arranged concentrically to form a plurality of annular gas inlets. In the present embodiment, the plurality of annular gas inlets arranged on the disc wall 2111 of the lower disc body 211 are connected to the gas outlet of the burner head to access the gas. The number of annular gas inlets can be determined according to actual needs.

[0103] Optionally, the annular member is a circular rib plate member with a certain height.

[0104] Optionally, the number of annular gas inlets is 2. For example, Figure 2As shown, the inner annular member 212 surrounds the through hole on the disc wall 2111, the middle annular member 213 and the outer annular member 214 are arranged in sequence from inside to outside on the disc wall 2111, and the outer annular member 214 is arranged at the edge of the disc wall 2111, thereby forming the inner ring air inlet 201, the middle ring air groove 202 and the outer ring air groove 203 on the lower disc body 211 in sequence.

[0105] Optionally, the air inlet cavity 221 of the air inlet partition member is divided into two air inlet passages by the partition member 222, which are respectively defined as the outer side air inlet passage 2211 and the inner side air inlet passage 2212. The outer side air inlet passage 2211 is in communication with the outer ring air groove 203, and the inner side air inlet passage 2212 is in communication with the middle ring air groove 202.

[0106] Optionally, the disc wall 2111 of the lower disc body 211 is arc-shaped, and a plurality of annular members are arranged on the concave wall surface thereof, and the air inlet partition member is arranged on the convex wall surface of the lower disc body 211.

[0107] Optionally, the air supplement passage 270 is formed between the part of the convex wall surface of the disc wall 2111 of the lower disc body 211 and the air inlet partition member. Figure 1 As shown, the air supplement passage 270 is formed between the part of the convex wall surface of the disc wall 2111 of the lower disc body 211 and the outer wall of two adjacent air inlet partition members. Then, the air supplement outlet is arranged at the corresponding position on the upper air distribution disc 290. The contact amount of the gas with air during the combustion process is increased, and the combustion efficiency is improved.

[0108] Optionally, the air supplement passage 270 includes a first air supplement passage and a second air supplement passage.

[0109] The first air supplement passage is configured to extend from the bottom of the air distribution disc to the inside, and the air inlet end thereof is arranged at the outer circumferential side of the air distribution disc, and the air outlet end thereof extends to at least between the outer annular member 214 and the middle annular member 213. The first air supplement passage is used for transporting air to the interval formed between the first air distribution passage and the second air distribution passage along the circumferential direction of the ring line where the first air supplement passage is arranged.

[0110] The second air supplement passage is configured to extend from the bottom of the air distribution disc to the inside, and the air inlet end thereof is arranged at the outer circumferential side of the air distribution disc, and the air outlet end thereof extends to at least between the inner annular member 212 and the middle annular member 213. The second air supplement passage is used for transporting air to the interval formed between the second air distribution passage and the third air distribution passage along the circumferential direction of the ring line where the second air supplement passage is arranged.

[0111] Here, the air supplement passage 270 can increase the air amount around at least one side of the fire hole ring, so as to improve the combustion of the gas.

[0112] Here, the plurality of air inlet channels are arranged at uniform intervals in the circumferential direction, and adjacent air inlet channels and the outer annular member and the middle annular member jointly surround the air outlet end of the first air supplement channel; adjacent air inlet channels and the inner annular member and the middle annular member jointly surround the air outlet end of the second air supplement channel.

[0113] In another optional embodiment (not shown in the drawings), the first air supplement channel is concave relative to the bottom surface of the air distribution disc, and is located between two adjacent air inlet channels; similarly, the second air supplement channel is concave relative to the bottom surface of the air distribution disc, and is located between two adjacent air inlet channels. The concave structure can reduce the protrusion of the bottom surface of the lower air distribution disc 210, and can improve the pressure resistance of the air distribution disc.

[0114] In the present embodiment, the first air supplement channel has a structure that gradually converges from the outside to the inside, and the second air supplement channel has a structure that gradually converges from the outside to the inside. For example, the first air supplement channel has a concave structure in the shape of a trumpet or a cone.

[0115] In some optional embodiments, a plurality of first air supplement channels are arranged uniformly in the circumferential direction of the air distribution disc, and / or a plurality of second air supplement channels are arranged uniformly in the circumferential direction of the air distribution disc. In this way, air can be supplemented uniformly from multiple positions in the circumferential direction of the air distribution disc, further ensuring the stability and uniformity of flame combustion.

[0116] In the present embodiment, the number of air inlet partitioning members is not limited and can be determined according to actual needs. Optionally, the number of air inlet partitioning members is 1, 2, 3, 4 or more. When the number of air inlet partitioning members is multiple, the air inlet partitioning members are distributed uniformly in the radial direction around the center of the lower disc body 211.

[0117] Optionally, when the number of air inlet partitioning members is multiple, the end surfaces of the air inlet cavities 221 of the plurality of air inlet partitioning members are located on the same horizontal plane, which is the connecting end surface of the lower air distribution disc 210. This improves the sealed connection with the connecting end surface of the upper air distribution disc 290.

[0118] In some embodiments, the air inlet partitioning member extends to the outside of the lower disc body 211 in the radial direction of the lower disc body 211. This increases the air distribution area of the air distribution disc.

[0119] In the present embodiment, the structure of the air inlet partitioning member is not limited, and it is only required to guide the air into the air distribution channels of some or all of the non-adjacent ring lines of the upper air distribution disc 290.

[0120] In some embodiments, the bottom wall of the air inlet partition member is curved upward toward the upper gas distribution plate 290 and the circumferential width of the air inlet cavity 221 is enlarged along the radial direction of the lower disc body 211. That is, the bottom wall of the air inlet passage is curved toward the upper gas distribution plate 290, guiding the air to flow upward toward the upper gas distribution plate 290, and the enlarged air inlet passage can buffer the gas pressure, so that the gas can flow more smoothly into the gas distribution passages of the upper gas distribution plate 290. In this embodiment, the air inlet partition member is in the shape of a bucket, and the bucket cavity of the bucket-shaped air inlet partition member is the air inlet cavity 221.

[0121] In some embodiments, the air inlet cavity 221 of the air inlet partition member includes a radial portion and a circumferential portion, the circumferential portion is located on the outer side and the circumferential width of the circumferential portion is greater than that of the radial portion; each air inlet passage (the inner air inlet passage 2212 and the outer air inlet passage 2211) formed by the partition member 222 includes a radial extension portion and a circumferential extension portion. The peripheral circumferential structure of the air inlet partition is increased, which can increase the gas distribution area of the outer ring and also increase the support area of the upper gas distribution plate 290, making the structure of the gas distribution plate more stable.

[0122] Optionally, the radial extension portion is formed by extending from the inside to the outside along the radial direction of the gas distribution plate, and each gas distribution passage is communicated with the corresponding radial extension portion.

[0123] Optionally, the air inlet cavity 221 is in the shape of a "7", and the air inlet passage is also in the shape of a "7".

[0124] Optionally, a plurality of air inlet passages are uniformly arranged along the circumference with equal arc length intervals. Taking the air inlet passages corresponding to the same ring line gas distribution passage combination as an example, the number of air inlet passages corresponding to the same ring line gas distribution passage combination is 4 in this embodiment, and the 4 air inlet passages are supplied with gas by the same annular gas mixing cavity and supply gas to the same plurality of annular gas distribution passages. Therefore, the 4 air inlet passages are uniformly arranged along the circumference with equal arc length intervals, so that the gas output by each ring line gas distribution passage can be more uniformly distributed in the circumferential direction, improving the stability of gas supply.

[0125] Optionally, the radial portion of the air inlet cavity 221 also has an expanding trend along the radial direction, and the radial extension portion of each air inlet passage also gradually expands from the inside to the outside, and the passage cross-sectional area gradually increases, such as a horn-shaped or conical structure.

[0126] Here, the circumferential length of the outer ring line is greater than that of the inner ring line, and if the flame intensity of the fire hole rings corresponding to the inner and outer ring lines is to be maintained within a similar range, the number of fire holes corresponding to the outer ring line is generally greater than that corresponding to the inner ring line, and more gas is required. Therefore, the expanding structure can increase the cross-sectional area of the passage located on the radial outer side of the radial extension portion to increase the amount of gas corresponding to the outer ring line.

[0127] In some embodiments, the partition member 222 is in the shape of a "7", and two or more "7"-shaped partition members 222 are arranged in the air intake cavity 221 to divide the air intake cavity 221 into two or more air intake passages.

[0128] Optionally, the "7"-shaped partition member 222 is arranged in the "7"-shaped air intake cavity 221, and the radial part and the circumferential part of the air intake cavity 221 are divided into two parts to form two "7"-shaped air intake passages. Figure 1 As shown in the figure, one "7"-shaped partition member 222 is arranged in the air intake cavity 221, and the horizontal part is arranged in the circumferential part of the air intake cavity 221, and the vertical part is arranged in the radial part of the air intake cavity 221, thereby dividing the air intake cavity 221 into two air intake passages.

[0129] Optionally, the center line of the radial extension part of the air intake passage is an arc or a straight line.

[0130] Optionally, the partition member 222 is a partition rib plate arranged vertically in the air intake cavity 221. The volume of the partition member 222 in the air intake cavity 221 is reduced, and the air intake amount is increased.

[0131] Optionally, the upper end surface of the vertically arranged partition member 222 is flush with the end surface (upper end surface) of the air intake cavity 221. The sealing performance of each air intake passage after the lower air distribution disc 210 is connected to the upper air distribution disc 290 is improved.

[0132] In the embodiment of the present disclosure, the communication mode of the air intake partition member 220 and the annular air intake groove on the lower disc body 211 in the lower air distribution disc 210 is not limited, as long as the communication is realized and the flow of gas is ensured. For example, the disc wall 2111 corresponding to each annular air intake groove is provided with an air intake port communicating with the air intake passage. As shown in the figure, the inner ring air intake port 2021 and the outer ring air intake port 2031. Figure 3

[0133] In some embodiments, the bottom wall of the air intake partition member 220 is arranged on the disc wall 2111 of the lower disc body 211, and an air intake port is arranged on the disc wall 2111 and the bottom wall at the position where the air intake passage and the annular air intake groove overlap.

[0134] Optionally, the air intake groove of the radial extension part of the air intake passage is constructed as an arc-shaped concave structure capable of smoothly transitioning with the annular mixing cavity, so as to reduce the path resistance of the gas flowing from the annular mixing cavity to the air distribution disc, and improve the smoothness of the gas entering.

[0135] ​In some embodiments, the disc wall 2111 of the lower disc body 211 is arc-shaped, and the bottom wall of the air inlet partition member 220 is inserted into the arc-shaped disc wall 2111 in a manner that the outer convex wall surface of the disc wall 2111 of the lower disc body 211 is opposite to the bottom wall of the air inlet partition member 220, so that the end surface of the air inlet cavity 221 of the air inlet partition member 220 is flush with the center of the outer convex wall surface of the arc-shaped disc wall 2111; and the annular structure interfering with the air inlet passage is removed, and it is ensured that one air inlet passage corresponds to only one annular air inlet groove.

[0136] In some embodiments, the circumferential extension part is connected to the outer end of the radial extension part corresponding to the same air inlet passage and is formed in a circumferential line, where the circumferential extension part generally refers to the part of the short side segment of the "7" shaped air inlet passage. The circumferential extension part is arranged in position corresponding to the air distribution passage, that is, the circumferential line where the circumferential extension part is located is collinear with the ring line where the corresponding air distribution passage is located, so that the circumferential extension part can at least transport the gas to the corresponding air distribution passage, the circumferential extension part can increase the circumferential interfacing area between the air inlet passage and the air distribution passage, and further accelerate the gas outflow rate of the radial extension part of the air inlet passage.

[0137] It should be understood that the "7" shape representing the structure of the air inlet passage in the foregoing does not involve the limitation of the length between the radial extension part and the circumferential extension part, that is, the length of the radial extension part can be greater than, less than, or equal to the length of the corresponding circumferential extension part.

[0138] Optionally, the adjacent circumferential extension parts located on the same circumferential line are connected to each other, so that the gas from one air inlet passage can be transported to the circumferential extension part belonging to another air inlet passage via the circumferential extension part, which not only can effectively increase the overall length of the circumferential extension part on the circumferential line and improve the gas transport efficiency to the air distribution passage, but also can further improve the uniformity of the circumferential gas outflow.

[0139] In combination with Figures 4-12 As shown in the drawings, the second type of air distribution disc provided by the embodiments of the present disclosure includes a lower air distribution disc 210 and an upper air distribution disc 290, the lower air distribution disc 210 has one or more first air inlet partitions 230, and the upper air distribution disc 290 includes air distribution passages located on different ring lines from inside to outside, and part or all of the air distribution passages on non-adjacent ring lines are connected to the one or more first air inlet partitions 230.

[0140] The second type of air distribution disc of the embodiments of the present disclosure, through the arrangement of the first air inlet partition 230 on the lower air distribution disc 210, the gas entering from one air inlet on the lower air distribution disc 210 can be distributed to the air distribution passages on different ring lines on the upper air distribution disc 290, which expands the gas distribution area, increases the diversity of the heating mode, and increases the flexibility of the heating area, so as to meet various cooking demands, such as frying, grilling, and other cooking heating scenes.

[0141] In some embodiments, the gas inlet part of the gas distribution disc comprises at least a first gas inlet channel 231 and a second gas inlet channel 232 formed in the lower gas distribution disc 210; correspondingly, the gas distribution part comprises at least a first gas distribution channel 205, a second gas distribution channel 206 and a third gas distribution channel 207 formed in the upper gas distribution disc 290. The first gas distribution channel 205 and the third gas distribution channel 207 are in communication with the first gas inlet channel 231, and the second gas distribution channel 206 is in communication with the second gas inlet channel 232, so that the combustion state of the fire hole ring corresponding to the first gas distribution channel 205 and the third gas distribution channel 207 can be uniformly controlled by the gas flow path corresponding to the first gas inlet channel 231, and the combustion state of the fire hole ring corresponding to the second gas distribution channel 206 can be controlled by the gas flow corresponding to the second gas inlet channel 232, which are independent of each other.

[0142] In this way, when the gas flow in each gas inlet channel changes, the gas flow in the corresponding gas distribution channel and the fire hole ring also changes synchronously. Since the ring lines of the fire hole rings corresponding to the same gas inlet channel (such as the first gas inlet channel 231) are at different inner and outer heating positions, the adjustment of the gas flow of a single gas inlet channel can simultaneously achieve synchronous adjustment of the firepower of the inner and outer multiple different heating positions, thereby effectively improving the heating uniformity and reducing the complexity of operation.

[0143] Optionally, as shown in Figure 4 and Figure 6 , the number of the first gas inlet channel 231 and the second gas inlet channel 232 is multiple and is set in groups one by one; the multiple groups of first gas inlet channels 231 and second gas inlet channels 232 are uniformly arranged at equal arc intervals along the circumference, so that the gas output by the gas distribution channel on each ring line can be more uniformly distributed in the circumferential direction, improving the stability of gas supply.

[0144] Further optionally, as shown in Figure 8 , the number of the first gas inlet channel 231 is multiple, and the number of the second gas inlet channel 232 is multiple; the first gas inlet channel 231 and the second gas inlet channel 232 are alternately arranged along the circumference, Figure 8 In the embodiment shown in , the number of the first gas inlet channel 231 and the second gas inlet channel 232 is two, and the four gas inlet channels are arranged in a "cross shape" on the lower gas distribution disc 210 of the gas distribution disc, and the two first gas inlet channels 231 are symmetrically arranged, and the two second gas inlet channels 232 are also oppositely arranged.

[0145] Optionally, the first gas inlet channel 231 and the second gas inlet channel 232 have a channel structure that gradually expands from the inside to the outside and gradually increases in cross-sectional area.

[0146] In some embodiments, the first gas inlet channel 231 supplies gas to the first gas distribution channel 205 and the third gas distribution channel 207 at the same time, and the number of the gas distribution channels corresponding to the gas supply of the first gas inlet channel 231 is more than that of the second gas inlet channel 232. Therefore, in order to ensure the flame intensity of the first gas distribution channel 205 and the third gas distribution channel 207 corresponding to the respective flame hole rings, the expansion range of the first gas inlet channel 231 is larger than that of the second gas inlet channel 232, so as to adapt to the larger gas flow requirement of the first gas inlet channel 231.

[0147] In some embodiments, the lower gas distribution disc 210 includes the lower disc body 211 and the first partition rib 240. The inner annular member 212 is arranged at the center of the first disc surface of the lower disc body 211 (forming the inner annular gas inlet 201), and a plurality of annular gas inlet grooves are arranged on the second disc surface and surround the inner annular member 212. The first partition rib 240 has a first arc segment 241 and a first straight segment 242, and the first straight segment 242 is arranged at both ends of the first arc segment 241. The first partition rib 240 is arranged on the first disc surface of the lower disc body 211. The end of the first straight segment 242 is connected to the inner annular member 212. The area between the first partition rib 240 and part of the inner annular member 212 forms the first gas inlet subarea 230, and the first gas inlet subarea 230 communicates with one annular gas inlet groove.

[0148] In the present embodiment, the first gas inlet subarea 230 is separated from the lower gas distribution disc 210 by the first partition rib 240, and the gas distribution channels on the non-adjacent ring lines communicate with the first gas inlet subarea 230. Therefore, the gas / premixed gas connected by one annular gas inlet groove can flow into the gas distribution channels on the non-adjacent ring lines through the corresponding gas inlet channel, realizing one-to-many gas distribution and increasing the flexibility of gas distribution. The shape of the first gas inlet subarea 230 is overall fan-shaped.

[0149] Optionally, the first gas inlet subarea 230 communicates with the annular gas inlet groove on the inner side.

[0150] In some embodiments, the lower disc body 211 further includes a plurality of annular members arranged on the second disc surface of the lower disc body 211 from inside to outside with the inner annular member 212 as the center, forming a plurality of annular gas inlet grooves. In the present embodiment, the plurality of annular gas inlet grooves arranged on the second disc surface of the lower disc body 211 are connected to the gas outlet of the burner head to connect the gas / premixed gas. The number of the annular gas inlet grooves can be determined according to actual needs.

[0151] Optionally, the number of the annular gas inlet grooves is 2. As shown in Figure 5 and Figure 9 As shown in the figures, the inner annular member 212, the middle annular member 213, and the outer annular member 214 are sequentially and concentrically arranged on the second disc surface from inside to outside with the inner annular member 212 as the center, forming the inner annular gas inlet 201, the middle annular gas inlet groove 202, and the outer annular gas inlet groove 203 on the lower disc body 211.

[0152] Optionally, the first air intake section 230 is connected to the middle annular air intake slot 202, thereby increasing the air distribution area.

[0153] In this embodiment, the inner annular component 212, the middle annular component 213, and the outer annular component 214 are all annular parts with a certain height. The height of each annular component can be different, depending on the actual structure. Optionally, the inner annular component 212 and the outer annular component 214 are at the same height on the first disk surface of the lower disk 211, making the connecting end face of the lower air distribution disk 210 planar. Optionally, the height of the annular component located on the outer side of the second disk surface is greater than the height of the annular component located on the inner side. Figure 5 and Figure 9 As shown, the height of the outer ring component 214 is greater than the height of the middle ring component 213.

[0154] Optionally, the first partition rib 240 includes a first partition rib 240Ⅰ and / or a first partition rib 240Ⅱ. The first partition rib 240Ⅰ refers to a first arc segment 241 that is an arc greater than or equal to a semicircle, and the first partition rib 240Ⅱ refers to a first arc segment 241 that is an arc less than a semicircle.

[0155] Optionally, the number of first partition ribs 240 is one or more. When the number of first partition ribs 240 is multiple, the multiple first partition ribs 240 are spaced around the inner annular member 212, and the first arc segments 241 of the multiple first partition ribs 240 are located on the same ring line.

[0156] In this embodiment, the shape and number of the first dividing ribs 240 are not limited, and can be determined based on dividing the lower air distribution plate 210 into one or more first air intake zones 230.

[0157] Optionally, the first partition 240 includes a first partition 240Ⅰ. In this embodiment, there is one first partition 240, which divides the lower air distribution plate 210 into a first air intake zone 230. Optionally, the central angle of the first arc segment 241 of the first partition 240Ⅰ is 120° to 180°. Optionally, the central angle of the first arc segment 241 of the first partition 240Ⅰ is 140° to 160°. Optionally, the central angle of the first arc segment 241 of the first partition 240Ⅰ is 150°.

[0158] Optionally, the first partition rib 240 includes a first partition rib 240Ⅱ. In this embodiment, the number of first partition ribs 240Ⅱ is multiple, such as 2, 3, 4 or more, which can be set according to the principle of uniform air intake. Optionally, as Figure 8 As shown, there are two first dividing ribs 240, symmetrically arranged around the inner annular member 212. Figure 4 andFigure 10 As shown, the number of the first partition ribs 240 is four, which are evenly arranged around the inner annular member 212.

[0159] Optionally, the first partition ribs 240 include a first partition rib 240I and a first partition rib 240II. In this embodiment, the number of the first partition rib 240I is one, and the number of the first partition rib 240II is multiple. The central angle of the first partition rib 240I is 90°-120°. The multiple first partition ribs 240II are arranged between the two first linear segments 242 of the first partition rib 240I.

[0160] In some embodiments, the lower gas distribution plate 210 further includes a second partition rib 250 having a second arc segment 251 and a second linear segment 252, the second linear segment 252 is arranged on the first end of the second arc segment 251; the second partition rib 250 is arranged in the first intake gas partition 230, and the second end of the second arc segment 251 is connected to the first linear segment 242 of the first partition rib 240, and the end of the second linear segment 252 is connected to the inner annular member 212; the outer side of the second partition rib 250 and the first partition rib 240 form the first intake gas passage 231; the first intake gas passage 231 communicates with the annular intake groove on the inner side.

[0161] In this embodiment, the shape of the second partition rib 250 is a "7" shape, the second arc segment 251 is arranged along the ring line of the lower gas distribution plate 210, and the second linear segment 252 is not limited to be arranged along the radial direction of the lower gas distribution plate 210. Then, the "7" shaped second partition rib 250 is arranged on the first linear segment 242 of the first intake gas partition 230 which is a whole fan shape, forming the first intake gas passage 231 which includes the first radial intake part 2311 and the first circumferential intake part 2312 which are communicated. Moreover, the number of the second partition rib 250 can be one or two.

[0162] Optionally, as shown in Figure 4 and Figure 10 the number of the second partition rib 250 arranged in each first partition rib 240 is one, then the second end of the second arc segment 251 is connected to the second side first linear segment 2422 of the first partition rib 240, the second linear segment 252 is close to the first side first linear segment 2421 of the first partition rib 240 to form the first radial intake part 2311, and the second arc segment 251 and the first arc segment 241 of the first partition rib 240 form the first circumferential intake part 2312. In this embodiment, the first intake gas passage 231 is a "7" shape.

[0163] Optionally, as shown in Figure 8As shown, two second partition ribs 250 are provided within each first partition rib 240. The second ends of the second arc segments 251 of the two second partition ribs 250 are respectively connected to the first straight segments 242 on both sides of the first partition rib 240. The second arc segments 251 of the two second partition ribs 250 are located on the same ring line and form a first circumferential air intake 2312 between them and the first arc segments 241 of the first partition rib 240. The second straight segments 252 are spaced apart to form a first radial air intake 2311. In this embodiment, the first air intake channel 231 is T-shaped.

[0164] In some embodiments, the end of the first straight segment 242 of the first partition rib 240 used to form the first air intake channel 231 is bent to form a first bent segment 243, and the first bent segment 243 is connected to the adjacent first straight segment 242; a communication port is opened on the lower plate 211 between the inner annular member 212 and the first bent segment 243, which communicates with the inner annular air intake groove. In this embodiment, an arc-shaped channel is formed between the first bent segment 243 and the inner annular member 212, and this arc-shaped channel corresponds to the inner annular air intake groove (e.g., the middle annular air intake groove 202), and a communication port is opened on this arc-shaped channel to form the middle annular air intake port 2021. Compared to, Figure 7 Compared to the structure where the end of the first straight segment 242 shown is not bent, the air intake area of ​​the middle ring air intake 2021 is increased, thereby increasing the air intake volume.

[0165] like Figure 4 and Figure 5 As shown, the lower air distribution plate includes four first partition ribs 240, and each first partition rib 240 contains a second partition rib 250. A first straight segment 2421 on the first side and the second partition rib 250 form the first radial air intake portion 2311 of the first air intake channel 231. Therefore, the end of the first straight segment 2421 on the first side of one of the first partition ribs 240 is bent to form a first bent segment 243, which connects to an adjacent first straight segment 242 (e.g., the second straight segment 2422 of another adjacent first partition rib 240).

[0166] Optionally, the first intake passage 231 is connected to the middle annular intake groove 202. Optionally, the first radial intake portion 2311 of the first intake passage 231 is connected to the middle annular intake groove 202. This increases the air distribution area.

[0167] In this embodiment, the first partition 240 divides the first plate surface of the lower plate 211 into two regions: the aforementioned first air intake zone 230 and the remaining region defined as the second air intake zone. The first air intake zone 230 connects to some or all of the air distribution channels of non-adjacent rings, while the remaining air distribution channels connect to the second air intake zone, thereby supplying air to all air distribution channels on the upper air distribution plate 290.

[0168] In some embodiments, the lower gas distribution disc 210 further comprises one or more second air inlet sub-zones, and a second air inlet passage 232 is arranged in the second air inlet sub-zone; the second air inlet passage 232 is in communication with the partial gas distribution passages of the upper gas distribution disc 290. In this embodiment, the air inlet is guided into the set partial gas distribution passage through the arrangement of the second air inlet passage 232, thereby further improving the flexibility of gas distribution.

[0169] Optionally, when the lower gas distribution disc 210 comprises the first partition rib 240, the lower gas distribution disc 210 further comprises a third annular partition rib 260 arranged outside the first partition rib 240; a region between the first partition rib 240 and the third annular partition rib 260 forms the second air inlet passage 232; and the second air inlet passage 232 comprises a second radial air inlet part 2321 and a second circumferential air inlet part 2322 in communication. The second air inlet passage 232 is in communication with the annular air inlet groove outside to access the gas. In this embodiment, the second circumferential air inlet part 2322 is between the plurality of first arc segments 241 and the third annular partition rib 260, and the second radial air inlet part 2321 is formed between two adjacent first straight segments 242 (which can be two first straight segments 242 of the same first partition rib 240 or two first straight segments 242 of different first partition ribs 240). According to the number of first partition ribs 240, the second radial air inlet part 2321 can be one or more, thereby increasing the number of air inlets, improving the air inlet amount, and further improving the air inlet uniformity.

[0170] Optionally, when the number of first partition ribs 240 is a plurality, a partition plate is arranged radially between the first arc segment 241 of each first partition rib 240 and the third annular partition rib 260, thereby separating the second circumferential air inlet part 2322 into multiple segments, and each segment of the circumferential air inlet part is in communication with a second radial air inlet part 2321. A plurality of second air inlet passages 232 are formed.

[0171] Optionally, the second air inlet passage 232 is in communication with the outer annular air inlet groove 203. Optionally, the second radial air inlet part 2321 of the second air inlet passage 232 is in communication with the outer annular air inlet groove 203. The gas distribution area is increased.

[0172] In the embodiments of the present disclosure, according to whether the air supplement passage 270 is arranged, a third type of gas distribution disc is further provided, which is combined with the first type of gas distribution disc and the second type of gas distribution disc. Figures 4 to 12 As shown in FIG. 1, the third type of gas distribution disc comprises a lower gas distribution disc 210 and an upper gas distribution disc 290; the lower gas distribution disc 210 has one or more first air inlet sub-zones 230, and a partition structure is arranged in the first air inlet sub-zone 230 to separate the first air inlet sub-zone 230 into a first air inlet passage 231 and an air supplement region; the upper gas distribution disc 290 comprises gas distribution passages located at different ring lines from inside to outside, and part or all of the gas distribution passages of non-adjacent ring lines are in communication with one or more first air inlet sub-zones 230.

[0173] In the third type of gas distribution disc, the air supplement region is arranged on the lower gas distribution disc 210 to supplement air and improve the combustion rate of the gas. In this embodiment, the air supplement inlet structure is arranged on the upper gas distribution disc 290 at a position corresponding to the air supplement region to complete the air supplement.

[0174] In some embodiments, the third type of lower gas distribution disc 210 includes a lower disc body 211, a first partition rib 240, and a second partition rib 250. The central part of the first disc surface of the lower disc body 211 is provided with a through inner annular member 212, and a plurality of annular air inlet grooves are arranged around the inner annular member 212 on the second disc surface. The first partition rib 240 has a first arc segment 241 and a first straight segment 242, the two ends of the first arc segment 241 are respectively provided with the first straight segment 242, and the first partition rib 240 is arranged on the first disc surface of the lower disc body 211. The end of the first straight segment 242 is connected to the inner annular member 212, and the region between the first partition rib 240 and part of the inner annular member 212 forms a first air inlet partition 230, which communicates with one annular air inlet groove. The second partition rib 250 has a second arc segment 251 and a second straight segment 252, the first end of the second arc segment 251 is provided with the second straight segment 252, the second partition rib 250 is arranged in the first air inlet partition 230, the second end of the second arc segment 251 is connected to the first straight segment 242 of the first partition rib 240, and the end of the second straight segment 252 is connected to the inner annular member 212; the second partition rib 250 separates the first air inlet partition 230 into an independent first air inlet channel 231 and an air supplement region; and the air supplement inlet 271 is arranged on the lower disc body 211 of the air supplement region.

[0175] That is, the third type of gas distribution disc is based on the second type of gas distribution disc, the region surrounded by the second partition rib 250 and part of the first straight segment 242 of the first partition rib 240 is defined as the air supplement region, the air supplement inlet 271 is arranged on the lower disc body 211 of the region, the air supplement outlet is arranged on the upper gas distribution disc 290, the air channel is formed between the air supplement inlet 271 and the air supplement outlet, the air entering the air supplement inlet 271 flows out of the air supplement outlet and mixes with the gas to burn, the amount of air is increased, and the combustion efficiency is improved.

[0176] In the third type of gas distribution disc, the structure of the same components as the second type of gas distribution disc is described above and will not be repeated here.

[0177] Optionally, the air supplement inlet 271 is arranged outside the annular air inlet groove of the lower disc body 211. The air is introduced from the outside to the inside of the gas distribution disc, and the combustion efficiency is improved.

[0178] In some embodiments, the end of the first linear segment 242 of the first partition rib 240 for forming the air supplement region is bent to form a second bent segment 244, the second bent segment 244 is connected with the adjacent first linear segment 242 / second bent segment 244; the air outlet side passage 274 is formed between the inner annular member 212 and the second bent segment 244. In this embodiment, the air outlet side passage 274 is communicated with the air supplement inlet 271 of the air supplement region, forming an air passage, so that air can be introduced between the inner annular flame and the middle annular flame / middle annular flame and outer annular flame, and the air supplement amount can be increased to improve the combustion efficiency.

[0179] In this embodiment, the number of the second partition ribs 250 is different, and the way of forming the air outlet side passage 274 and the structure formed are different.

[0180] Optionally, as shown in the lower air distribution plate in Figure 8 two second partition ribs 250 are arranged in each first partition rib 240. The first linear segments (2421, 2422) on both sides of the first partition rib 240 are respectively engaged with a second partition rib 250 to form an air supplement region; the ends of the first linear segments (2421, 2422) on both sides are bent outward to form second bent segments 244, and the two second bent segments 244 are connected to form an integral second bent segment 244, and the integral second bent segment 244 and the inner annular member 212 form an air outlet side passage 274. The air supplement amount is increased.

[0181] Optionally, referring to the lower air distribution plate in Figure 7 one second partition rib 250 is arranged in each first partition rib 240. The second side first linear segment 2422 of the first partition rib 240 is engaged with the second partition rib 250 to form an air supplement region; the end of the second side first linear segment 2422 can be bent outward to form a second bent segment 244, and the second bent segment 244 is connected with the first side first linear segment 2421 of the other first partition rib 240 adjacent to the second bent segment 244, and the second bent segment 244 and the inner annular member 212 form an air outlet side passage 274. The air supplement amount is increased.

[0182] In some embodiments, as shown in Figure 11 The lower air distribution plate 210 also includes an air guide plate 280 arranged at the air supplement inlet 271 for guiding air flow. In this embodiment, the structure and arrangement of the air guide plate 280 are not limited, as long as it can guide the air flow between different air distribution passages of the upper air distribution plate 290.

[0183] Optionally, the air guide plate 280 comprises an arc guide plate 281, which is arranged at the air supplement inlet 271 in a way that the arc guide plate 281 is inclined along the annular of the lower disc body 211 from the outer side to the inner side. The air outside the air distribution disc is guided to the inside. In this embodiment, the arc guide plate 281 of the air guide plate 280 is arranged concentrically with the annular member of the lower disc body 211, and is located on the outer side of the plurality of annular members.

[0184] Optionally, the arc guide plate 281 is arranged on the inner side edge of the air supplement inlet 271 or the middle part in the radial direction; when the arc guide plate 281 is arranged in the middle part in the radial direction of the air supplement inlet 271, the air supplement inlet 271 is divided into an inner air supplement inlet 271 and an outer air supplement inlet 271. Respectively used for supplementing air for the inner side air distribution channel and the outer side air distribution channel, and improving the combustion effect.

[0185] Optionally, the arc guide plate 281 is arranged in the middle part in the radial direction of the air supplement inlet 271, and the upper end of the arc guide plate 281 extends upward to be flush with the upper end of the first partition rib 240; the lower end extends downward by a height not more than the height of the annular member on the outer side. Thus, the air supplement inlet 271 is divided into an inner air supplement inlet 271 and an outer air supplement inlet 271.

[0186] Optionally, the arc guide plate 281 is arranged on the inner side edge of the air supplement inlet 271, and the arc guide plate 281 extends downward by a height consistent with the height of the annular member on the outer side. While playing a guiding role, it also cooperates with the annular member on the outer side to play a certain supporting role.

[0187] Optionally, the arc guide plate 281 is formed along the outer ring line of the middle annular member.

[0188] In the above embodiments, the "height" refers to the height from the second disc surface of the lower disc body 211.

[0189] Optionally, the air guide plate 280 further comprises a straight plate 282, which is arranged on the second disc surface of the lower disc body 211 in a way that the straight plate 282 extends outward in the radial direction and one end of the straight plate 282 is connected with both ends of the arc guide plate 281, and the outer end of the straight plate 282 extends to the outer circumferential side of the air distribution disc. For the embodiment in which the arc guide plate 281 is arranged in the middle part in the radial direction of the air supplement inlet 271, the arrangement of the straight plate 282 divides the lower disc body 211 into an inner air inlet channel 272 corresponding to the second air supplement channel and an outer air inlet channel 273 corresponding to the first air supplement channel in the circumferential direction. The outer air inlet channel 273 is defined between the two straight plates 282 at both ends of one arc guide plate 281, and the inner air inlet channel 272 is defined between the two straight plates 282 at the adjacent end portions of the adjacent two arc guide plates 281. Promote the stability and uniformity of air flow.

[0190] Optionally, the outer side of the straight plate is provided with a tapered reinforcing rib plate, which can increase the deformation resistance of the straight plate itself to prolong its service life.

[0191] Optionally, the air guide plate and the air distribution disc are integrally formed.

[0192] In the third type of air distribution disc, the first partition rib 240 separates the first disc surface of the lower disc body 211 into two regions, one of which is the first air inlet partition 230, and the other region is defined as the second air inlet partition. The first air inlet partition 230 is connected to part or all of the non-adjacent ring lines of the air distribution channels, and the remaining air distribution channels are connected to the second air inlet partition, thereby realizing the air supply of all air distribution channels on the upper air distribution disc 290.

[0193] Therefore, in some embodiments, the lower air distribution disc 210 further comprises one or more second air inlet partitions, and the second air inlet partition is provided with a second air inlet channel 232; the second air inlet channel 232 is connected to part of the air distribution channels of the upper air distribution disc 290. In this embodiment, by constructing the second air inlet channel 232 to guide the air inlet to the set part of the air distribution channel, the flexibility of air distribution is further improved. In this embodiment, the structure and implementation of the second air inlet channel 232 are described in the corresponding part of the second type of air distribution disc, which will not be repeated here.

[0194] In the air distribution disc of the present disclosure, the structure of the upper air distribution disc 290 is consistent in the three types of air distribution discs described above, that is, the upper air distribution disc 290 in each of the following embodiments can be applied to each of the lower air distribution discs 210 described above, forming an air distribution disc.

[0195] In some embodiments, in combination with Figures 1 to 11 As shown in the figure, the upper air distribution disc 290 includes an upper disc body 291 and a plurality of annular air distribution members. The center of the upper disc body 291 is provided with a through hole (as an inner ring air outlet 204); the plurality of annular air distribution members are coaxially arranged on one side of the upper disc body 291 (such as the second disc surface), and each annular air distribution member is provided with an air distribution channel. Part or all of the non-adjacent annular air distribution members are connected to the same air inlet structure on the lower air distribution disc 210.

[0196] In the present disclosure, the same air inlet structure on the lower air distribution disc 210 is different according to the first type to the third type of air distribution disc described above.

[0197] Optionally, for the first type of air distribution disc, part or all of the non-adjacent annular air distribution members on the upper air distribution disc 290 are connected to the same air inlet channel on the lower air distribution disc 210. In this embodiment, the same air inlet channel is the inner side air inlet channel 2212 or the outer side air inlet channel 2211.

[0198] Optionally, for the second type of air distribution plate, the air distribution channels of some or all of the non-adjacent annular air distribution components on the upper air distribution plate 290 are connected to the first air intake zone 230 on the lower air distribution plate 210. Furthermore, when the lower air distribution plate 210 includes the second air intake channel 232, the air distribution channels of the remaining annular air distribution components are connected to the second air intake channel 232.

[0199] Optionally, for the third type of air distribution plate, the air distribution channels of some or all of the non-adjacent annular air distribution components on the upper air distribution plate 290 are connected to the first air intake channel 231 on the lower air distribution plate 210.

[0200] In the upper air distribution plate 290 of this embodiment, the other side of the upper plate body 291 (e.g., the first plate surface) is the connection end face between the upper air distribution plate 290 and the lower air distribution plate 210.

[0201] In some embodiments, such as Figure 9 He Jian Figure 11 As shown, the other side of the upper plate 291 is a flat surface. The connecting end face of the lower air distribution plate 210 is also a flat surface; after the two are joined, they can be fixedly connected.

[0202] In some embodiments, such as Figure 2 As shown, a mating component 292 is also provided on the other side of the upper plate 291. The mating component 292 is mated with the air intake partition (i.e., air intake partition component 220) on the lower air distribution plate 210 to form multiple air intake channels. This improves the sealing of the air intake channels and prevents air leakage.

[0203] Optionally, the mating component 292 includes ribs, which are disposed on the other side of the upper plate 291 in a manner that adapts to the air distribution structure on the lower air distribution plate 210.

[0204] like Figure 2 In the first type of air distribution plate shown, the shape of the ribs provided on the other side of the upper plate 291 is consistent with the shape of the air intake partition component 220 and the partition component 222 provided therein on the lower air distribution plate 210.

[0205] Optionally, the fitting component 292 protrudes from the other side of the upper plate 291. This appropriately raises the horizontal position of the upper plate 291, increases the cross-sectional area of ​​the air supply channel 270, and improves the amount of air supplied.

[0206] In this embodiment, the through hole provided on the upper plate 291 is the inner ring air distribution port 204, which is connected to the inner ring air inlet 201 on the lower air distribution plate 210 to form an inner ring gas channel.

[0207] Optionally, an upper inner ring member 293 is arranged on the circumference of the through hole of the upper disc body 291, so that the gas outlet surface of the inner ring gas passage is flush with the upper end surface of each annular gas distribution member. Of course, as shown in Figure 4 and Figure 8 , the upper inner ring member 293 can also not be arranged, which can be determined according to actual needs.

[0208] In the upper gas distribution disc 290 of the embodiments of the present disclosure, the number of annular gas distribution members is not limited and can be determined according to actual needs. In some embodiments, as shown in Figure 1 , Figure 8 and Figure 10 , the number of annular gas distribution members is four, and the first annular gas distribution member 294, the second annular gas distribution member 295, the third annular gas distribution member 296 and the fourth annular gas distribution member 297 are sequentially arranged from the inside to the outside on the upper gas distribution disc 290, which are distributed and correspondingly structured with the first gas distribution passage 205, the second gas distribution passage 206, the third gas distribution passage 207 and the fourth gas distribution passage 208. Some or all of the non-adjacent annular gas distribution members are in communication with the gas inlet structure.

[0209] Optionally, for the first type of gas distribution disc, the first gas distribution passage 205 and the third gas distribution passage 207 are in communication with the aforementioned inner side gas inlet passage 2212, and the second gas distribution passage 206 and the fourth gas distribution passage 208 are in communication with the outer side gas inlet passage 2211.

[0210] Optionally, for the second type of gas distribution disc, the first gas distribution passage 205 and the third gas distribution passage 207 are in communication with the aforementioned first gas inlet sub-area 230, and the second gas distribution passage 206 and the fourth gas distribution passage 208 are in communication with the second gas inlet passage 232.

[0211] Optionally, for the third type of gas distribution disc, the first gas distribution passage 205 and the third gas distribution passage 207 are in communication with the aforementioned first gas inlet sub-area 230, and the second gas distribution passage 206 and the fourth gas distribution passage 208 are in communication with the second gas inlet passage 232.

[0212] Optionally, the number of first gas distribution passages 205 of the same ring line is multiple, and they are arranged at a first equal arc interval along the circumferential direction of the ring line; similarly, the number of second gas distribution passages 206 of the same ring line is multiple, and they are also arranged at a second equal arc interval along the circumferential direction of the ring line; similarly, the number of third gas distribution passages 207 of the same ring line is multiple, and they are arranged at a third equal arc interval along the circumferential direction of the ring line. Here, the arrangement of multiple first gas distribution passages of the same ring line can make the gas flow out from multiple positions of the ring line at the same time, so as to improve the uniformity of gas outlet in the circumferential direction of the ring line.

[0213] The first plurality of sub-gas passages 205 and the third plurality of sub-gas passages 207 are arranged in one-to-one correspondence with the first plurality of gas inlets 231, and the second plurality of sub-gas passages 206 is arranged in one-to-one correspondence with the second plurality of gas inlets 232.

[0214] Optionally, the first equal arc, the second equal arc and the third equal arc can be the same or different.

[0215] Optionally, each annular sub-gas member includes two annular ribs, and the annular passage between the two annular ribs is the sub-gas passage.

[0216] In the upper gas distribution disc 290, a plurality of annular sub-gas members are arranged on one side of the upper disc body 291 (for example, the second disc surface) in a radially outward direction around the through hole. The plurality of annular sub-gas members can be uniformly distributed on the second disc surface in a radial direction, or can be non-uniformly arranged on the second disc surface in a set layout.

[0217] In some embodiments, along the radial direction of the upper gas distribution disc 290, two or more annular sub-gas members are sequentially arranged to form a group of gas passages, so that a plurality of annular sub-gas members form one or more groups of gas passages in different annular regions of the upper disc body 291. The same gas inlet passage (inner gas inlet passage or outer gas inlet passage, first type of gas distribution disc) on the lower gas distribution disc 210 / the first gas inlet sub-zone 230 (second type of gas distribution disc) / the first gas inlet passage 231 (third type of gas distribution disc) is respectively communicated with the inner sub-gas passage or the outer sub-gas passage in each group of gas passages. In this embodiment, the integration of the sub-gas passages simplifies the number of fire covers, and one fire cover is arranged on a group of gas passages. According to the number of sub-gas passages on the group of gas passages, the same number of fire hole rings can be arranged on the corresponding fire cover.

[0218] In this embodiment, the annular regions of the upper disc body 291 are determined according to the heating area. The annular regions are divided into an inner annular region, a middle annular region and an outer annular region. The first sub-gas passage 205 and the second sub-gas passage 206 are sequentially arranged to form a group of middle annular gas passages in the middle annular region, and the third sub-gas passage 207 and the fourth sub-gas passage 208 are sequentially arranged to form a group of outer annular gas passages in the outer annular region. That is, when the middle annular gas groove 202 of the lower gas distribution disc 210 is used for gas inlet, the inner gas inlet passage 2212 / the first gas inlet sub-zone 230 / the first gas inlet passage 231 of the gas inlet sub-zone member 220 can deliver the gas to the first sub-gas passage 205 and the third sub-gas passage 207, thereby expanding the gas distribution area. The inner annular gas passage is the gas passage in the inner annular region.

[0219] In this embodiment, an air supply outlet is further provided on the upper plate 291 of the upper air distribution plate 290, especially for the first and third type air distribution plates. This is to introduce air into the interior during combustion, thereby improving combustion efficiency. The location and shape of the air supply outlet are not limited, and can be designed in conjunction with the air supply inlet 271 / air passage on the lower air distribution plate 210.

[0220] In some embodiments, the air replenishment outlet includes an inner air replenishment outlet 275, which is disposed between the through hole of the upper plate 291 and the inner first annular air distribution member (first annular air distribution member 294), and communicates with the air replenishment inlet 271 / air replenishment channel 270 constructed on the lower air distribution plate 210.

[0221] In some embodiments, the air replenishment outlet further includes an outer air replenishment outlet 276, which is disposed on an upper plate 291 between adjacent annular air distribution members and corresponds to the air replenishment inlet 271 disposed on the lower air distribution plate 210.

[0222] In this embodiment, after the upper air distribution plate 290 and the lower air distribution plate 210 are connected, the inner air replenishment outlet 275 and the outer air replenishment outlet 276 can be connected to the same air replenishment channel 270 (e.g., Figure 1 , Figure 4 and Figure 8 (as shown); it can also be connected to different air supply channels 270.

[0223] like Figure 10 As shown, in the third type of air distribution plate, the inner air replenishment outlet 275 is connected to the inner air inlet channel 272, and the outer air replenishment outlet 276 is connected to the outer air inlet channel 273.

[0224] Optionally, the air replenishment outlets are located on different rings of the upper plate 291, and multiple air replenishment outlets located on the same ring are evenly distributed.

[0225] Optionally, the inner air replenishment outlet 275 is located on the ring line between the through hole of the upper plate 291 and the first inner annular air distribution component.

[0226] Optionally, the outer air replenishment outlet 276 is located on the lower plate 211 between the second air distribution channel 206 and the third air distribution channel 207.

[0227] In this embodiment, the shape of the air supply outlet is not limited, and it is set according to the maximum connection between its location and the air channel to improve the air supply volume.

[0228] Optionally, the inner air supply outlet 275 is configured as a triangle.

[0229] Optionally, the outer air supplement outlet 276 is arranged along the arc of the ring line.

[0230] Of course, the upper gas distribution disc 290 of the present embodiment has gas outlet structures for communicating with the air inlet channels in the upper disc body 291 of each annular gas distribution member. The gas outlets are in communication with the inner side air inlet channel 2212 / first air inlet subarea 230 / first air inlet channel 231 or second air inlet channel 232 / outer side air inlet channel 2211 required to be communicated with the gas distribution channel where the gas outlet is located. The number and shape of the gas outlets are not limited and can be determined according to actual needs. According to the gas distribution channel where the gas outlet is located, the gas outlets are defined as first gas outlet 2901, second gas outlet 2902, third gas outlet 2903 and fourth gas outlet 2904, respectively. The first gas outlet 2901 is arranged in the first gas distribution channel 205, the second gas outlet 2902 is arranged in the second gas distribution channel 206, the third gas outlet 2903 is arranged in the third gas distribution channel 207, and the fourth gas outlet 2904 is arranged in the fourth gas distribution channel 208.

[0231] Optionally, the gas outlets are arranged on the lower disc body 211 in the gas distribution channel, and the gas outlets in the same gas distribution channel are uniformly arranged in the circumferential direction. This improves the uniformity of the gas outlet. In the present embodiment, the circumferential length of the gas outlet is as large as possible under the premise of ensuring the structural strength of the upper gas distribution disc 290 and meeting the gas outlet amount, thereby improving the gas outlet amount.

[0232] Optionally, in the radial direction, the length of the gas outlet on the gas distribution channel on the outer side in the circumferential direction is greater than the length of the gas outlet on the gas distribution channel on the inner side in the circumferential direction. This improves the gas distribution amount on the outer side gas distribution channel and improves the heating efficiency of the outer side gas distribution channel.

[0233] Optionally, the same side edges of the plurality of gas outlets on the same gas distribution channel are provided with slope structures 298. This can promote the same direction flow of the gas after entering the gas distribution channel and improve the stability of the gas outlet.

[0234] In some embodiments, the upper gas distribution disc 290 includes a disc-shaped body (the same as the upper disc body 291), and the disc-shaped body is provided with a plurality of gas outlets and a through hole. The plurality of gas outlets are distributed on different ring lines of the disc-shaped body to form gas distribution channels. For example, the upper gas distribution disc 290 shown in Figure 4 and Figure 5 The upper gas distribution disc 290 shown in

[0235] In some embodiments, for the second type of gas distribution disc and the third type of gas distribution disc, the second circumferential air inlet part 2322 of the second air inlet channel 232 of the lower gas distribution disc 210 is arranged corresponding to the outermost annular gas distribution member (the fourth annular gas distribution member 297) of the upper gas distribution disc 290, so that the outer peripheral surface of the gas distribution disc is flush, facilitating sealing connection, and facilitating assembly with other structural members of the burner, etc.

[0236] Optionally, the first circumferential air inlet part 2312 of the first air inlet channel 231 of the lower gas distribution disc 210 is arranged corresponding to the next outer annular gas distribution member (the third annular gas distribution member 296) of the upper gas distribution disc 290.

[0237] In the present embodiment, as long as the remaining annular gas distribution members have an overlapping area with the corresponding inner air inlet channel 2212 / first air inlet partition 230 / first air inlet channel 231 or outer air inlet channel 2211 / second air inlet channel 232, and an air outlet structure is provided on the upper disc body 291 in the overlapping area for communication, the setting of the remaining annular gas distribution members is completed.

[0238] In the present embodiment, a relief structure is also provided at the corresponding position of the lower gas distribution disc 210 and the upper gas distribution disc 290, for setting the structure members such as the ejector pipe 320, the ignition needle and the thermocouple. The relief structure can be a relief hole or a relief notch. The specific setting position of the relief structure can be determined according to the position of the structure members such as the ejector pipe 320, the ignition needle and the thermocouple provided on the burner head. A plurality of fixing holes are also provided, for bolted connection of the upper gas distribution disc 290 and the lower gas distribution disc 210, and the fixing holes include circular holes.

[0239] In the present embodiment, the only difference in the construction of the air inlet partition on the lower gas distribution disc 210 is that the upper gas distribution disc 290 used in each type of gas distribution disc is universal, i.e. the upper gas distribution disc 290 structure as shown in Figure 4 is also applicable to other types of lower gas distribution disc 210, forming a plurality of gas distribution discs.

[0240] Further, in order to realize the characteristics of stable gas supply, uniform heating and diversified fire forms of the burner in the present embodiment, a gas supply structure for the burner is also provided, Figure 19 a structural schematic diagram of the gas supply structure is shown, which includes an air inlet assembly 400, a burner head assembly 300 and a gas distribution assembly 200. The burner head assembly 300 is arranged between the air inlet assembly 400 and the gas distribution assembly 200, for uniformly distributing and pressurizing the external gas introduced by the air inlet pipe 410 and then inputting the gas into the air inlet channel of the gas distribution assembly 200. The gas distribution assembly 200 is arranged on the burner head assembly 300, to realize distribution of the gas introduced into the burner to the combustion gas path corresponding to the fire cover.

[0241] Here, the external gas enters the corresponding mixing chamber 310 in the furnace head assembly 300 through different gas inlet pipes 410, and after being mixed uniformly in the annular mixing chamber, the gas enters the corresponding gas distribution channel 2002 through the gas inlet channel 2001 of the gas distribution assembly 200 after being rectified.

[0242] Here, the number of annular mixing chambers 310 corresponds to the number of gas inlet pipes 410, and the gas inlet pipe 410 for supplying gas to the same gas distribution channel 2002 is in communication with the same annular mixing chamber 310.

[0243] Optionally, in combination with the annular mixing chamber in the above embodiment, the first annular mixing chamber 301 is in communication with the first gas inlet pipe 401, the second annular mixing chamber 302 is in communication with the second gas inlet pipe 402, and the central annular mixing chamber 303 is in communication with the central gas inlet pipe 403. Thus, the furnace head assembly 300 and the gas inlet assembly 400 are in communication.

[0244] As shown in Figure 15 , 16 The gas distribution assembly 200 includes a gas inlet channel 2001 and a gas distribution channel 2002, and at least one gas inlet channel 2001 is in communication with the gas distribution channel 2002 located in non-adjacent ring lines; the gas inlet assembly 400 includes a switching device 420 and a gas inlet pipe 410 corresponding to the gas inlet channel 2001; the switching device 420 is used to control the conduction state and / or gas flow of the gas inlet pipe 410, so as to adjust the combustion state of the corresponding independent gas path on the burner.

[0245] Here, the gas inlet assembly 400 delivers external gas to the gas inlet channel of the gas distribution assembly 200, and the gas distribution assembly 200 rectifies the gas and enters the corresponding gas distribution channel, and supplies gas to the independent gas path on the burner corresponding to the gas distribution channel.

[0246] The gas supply structure provided by the embodiment is used to connect part or all of the non-adjacent ring lines of the gas distribution assembly 200 with the same gas inlet channel, and at the same time, the switching device 420 is arranged on the gas inlet pipe 410 corresponding to the gas inlet channel, so that at least one gas inlet pipe 410 can supply gas to the gas distribution channels of multiple non-adjacent ring lines through the gas inlet channel, so as to adjust the combustion state of the gas path corresponding to the gas distribution channel on the burner. In this way, when multiple gas inlet pipes 410 are in different states, a certain degree of balanced gas supply can be achieved through multiple gas distribution channels connected with the same conduction state gas inlet pipe 410, so that heat can be uniformly distributed, thereby effectively improving the heating uniformity, reducing the complexity of operation, and realizing the diversity of gas stove fire form.

[0247] Figures 17-19Three gas supply structure diagrams for supplying gas to the burner are provided for the embodiments of the present disclosure; in combination with Figure 16 、 Figures 17-19 As shown in the drawings, in the embodiments of the present disclosure, the gas supply structure is mainly divided into three types according to the communication relationship between the gas inlet channel 2001 and the gas distribution channel 2002.

[0248] The first type of gas supply structure provided by the embodiments of the present disclosure includes a gas distribution assembly 200, which includes a first gas inlet channel 231 and a second gas inlet channel 232, and a first gas distribution channel 205, a second gas distribution channel 206 and a third gas distribution channel 207 located in different ring lines from the inside to the outside; the first gas inlet channel 231 is respectively communicated with the first gas distribution channel 205 and the third gas distribution channel 207; the second gas inlet channel 232 is communicated with the second gas distribution channel 206; and the gas inlet assembly 400 includes a first gas inlet pipe 401 and a second gas inlet pipe 402 respectively arranged corresponding to the first gas inlet channel 231 and the second gas inlet channel 232.

[0249] The first type of gas supply structure provided by the embodiments of the present disclosure realizes the communication of the first gas inlet channel 231 with the non-adjacent first gas distribution channel 205 and third gas distribution channel 207 by setting the gas distribution assembly 200 as a three-ring gas distribution channel structure. In this way, when the gas flow and / or conduction state of the first gas inlet pipe 401 corresponding to the first gas inlet channel 231 is adjusted, the first gas distribution channel 205 and the third gas distribution channel 207 can be synchronously adjusted to form two-ring fires with a certain spacing and synchronous firepower on the burner. Compared with single-ring fire, the heating area can be effectively expanded, and the uniformity of heating can be improved.

[0250] Here, the switching device can be a mechanical valve structure arranged on the gas inlet pipe 410, or an electronic valve structure that can be controlled through an input end. The input end can be a key, a panel, a mobile terminal or other smart home appliances, etc.

[0251] Optionally, in the first type of gas supply structure, the switching device arranged on the gas inlet pipe 410 includes a first control valve 404 and a second control valve 405. The first control valve 404 is used to adjust the conduction state and / or gas flow of the first gas inlet pipe 401 to simultaneously adjust the combustion state of the independent gas paths corresponding to the first gas distribution channel and the third gas distribution channel on the burner; and the second control valve 405 is used to control the conduction state and / or gas flow of the second gas inlet pipe 402 to adjust the combustion state of the independent gas path corresponding to the second gas distribution channel on the burner.

[0252] Here, two control valves are used to adjust the on-off state and / or the intake flow of the first intake pipe 401 and the second intake pipe 402, respectively. For example, when the first control valve 404 is in the first state, the first intake pipe 401 is closed, the first intake passage 231 has no intake, and the first sub-passage 205 and the third sub-passage 207 do not supply gas to the burner; when the first control valve 404 is in the second state, the first intake pipe 401 is open, external gas is introduced into the first intake passage 231, and the first sub-passage 205 and the third sub-passage 207 connected thereto simultaneously supply gas to the burner, and the gas paths corresponding to the first sub-passage 205 and the third sub-passage 207 on the burner burn to supply heat. Alternatively, the first control valve 404 can be provided with multiple gears between the first state and the second state to adjust the intake flow of the first intake pipe 401. The adjustment of the intake flow can also be realized by separately providing a gas regulating valve on the intake pipe 410.

[0253] Similarly, when the second control valve 405 is in the first state, the second intake pipe 402 is closed, the second intake passage 232 has no intake, and the second sub-passage 206 does not supply gas to the burner; when the second control valve 405 is in the second state, the second intake pipe 402 is open, external gas is introduced into the second intake passage 232, and the second sub-passage 206 connected thereto supplies gas to the burner, and the gas path corresponding to the second sub-passage 206 on the burner burns to supply heat. Alternatively, the second control valve 405 can be provided with multiple gears between the first state and the second state to adjust the intake flow of the second intake pipe 402.

[0254] In this way, in the first type of gas supply structure, the first control valve 404 and the second control valve 405 can be used to adjust the gas supply state of the first sub-passage 205, the second sub-passage 206, and the third sub-passage 207 to realize the diversified combustion state of the burner. When the first intake pipe 401 corresponding to the first control valve 404 and the second intake pipe 402 corresponding to the second control valve 405 are both open, the first sub-passage 205, the second sub-passage 206, and the third sub-passage 207 all supply gas to the burner, and the three-ring gas paths corresponding to the above-mentioned sub-passage arranged along the ring line from the inside to the outside on the burner burn simultaneously to supply heat, providing a three-ring gas supply mode of the burner with large fire power, large heating area, and good uniformity.

[0255] When the first intake pipe 401 corresponding to the first control valve 404 is open and the second intake pipe 402 corresponding to the second control valve 405 is closed, the first gas distribution channel 205 and the third gas distribution channel 207, which are connected to the first intake channel 231, simultaneously supply gas to the burner, while the second gas distribution channel 206, which is connected to the second intake channel 232, does not supply gas to the burner. Therefore, the two gas paths on the burner corresponding to the first gas distribution channel 205 and the third gas distribution channel 207 burn and provide heat simultaneously. The gas path located between these two gas paths, corresponding to the second gas distribution channel 206, stops burning. The gas supply structure provides the burner with a uniform and synchronous dual-ring gas supply mode for both the inner and outer rings. Because there is a certain distance between the first gas distribution channel 205 and the third gas distribution channel 207, the heating in the dual-ring gas supply mode is more uniform.

[0256] When the first intake pipe 401 corresponding to the first control valve 404 is closed and the second intake pipe 402 corresponding to the second control valve 405 is open, the second gas distribution channel 206 supplies gas to the burner. The middle ring gas path corresponding to the second gas distribution channel 206 in the combustion chamber provides combustion and heating, and the gas supply structure provides a middle ring gas supply mode for the burner. Since the second gas distribution channel 206 is located between the first gas distribution channel 205 and the third gas distribution channel 207, the middle ring gas supply mode has a larger heating area and better uniformity compared to a single inner ring or single outer ring gas supply mode.

[0257] The second type of air supply structure provided in this embodiment includes an air distribution component 200 that, based on the first type of air supply structure described above, further includes a fourth air distribution channel 208 disposed on the outer ring of the third air distribution channel 207; the second air intake channel 232 is also connected to the fourth air distribution channel 208.

[0258] This second type of gas supply structure, by setting the gas distribution assembly 200 as a four-ring gas distribution channel structure, connects the first intake channel 231 with the non-adjacent first gas distribution channel 205 and third gas distribution channel 207, and the second intake channel 232 with the non-adjacent second gas distribution channel 206 and fourth gas distribution channel 208. Thus, when adjusting the intake flow rate and / or conductivity of the first intake pipe 401 corresponding to the first intake channel 231, the first gas distribution channel 205 and third gas distribution channel 207 can be adjusted synchronously; similarly, when adjusting the intake flow rate and / or conductivity of the second intake pipe 402 corresponding to the second intake channel 232, the second gas distribution channel 206 and fourth gas distribution channel 208 can be adjusted synchronously. This provides three gas supply modes for the burner, effectively expanding the heating area and improving heating uniformity compared to single-ring adjustment.

[0259] Optionally, in the second type of gas supply structure, the switching device installed on the intake pipe 410 includes a first control valve 404 and a second control valve 405. The first control valve 404 functions the same as in the first type of gas supply structure, simultaneously adjusting the combustion state of the independent gas paths corresponding to the first gas distribution channel 205 and the third gas distribution channel 207 on the burner. The second control valve 405, in the second type of gas supply structure, adjusts the conduction state and / or intake flow rate of the second intake pipe 402 to simultaneously adjust the combustion state of the independent gas paths corresponding to the second gas distribution channel 206 and the fourth gas distribution channel 208 on the burner.

[0260] Here, when the second control valve 405 is in the first state, the second intake pipe 402 is closed, and the second intake channel 232 has no air intake. Therefore, the second distribution channel 206 and the fourth distribution channel 208 do not supply gas to the burner. When the second control valve 405 is in the second state, the second intake pipe 402 is open, introducing external gas into the second intake channel 232. Then, the second distribution channel 206 and the fourth distribution channel 208 connected to it simultaneously supply gas to the burner, and the burner provides combustion and heating through the gas paths corresponding to the second distribution channel 206 and the fourth distribution channel 208, respectively. Optionally, the second control valve 405 can be set with multiple positions between the first and second states to adjust the intake flow rate of the second intake pipe 402. Alternatively, the intake flow rate can be adjusted by separately installing a gas regulating valve on the intake pipe 410.

[0261] Thus, in the second type of gas supply structure, the gas supply status of the first gas distribution channel 205, the second gas distribution channel 206, the third gas distribution channel 207, and the fourth gas distribution channel 208 can be adjusted through the first control valve 404 and the second control valve 405 to achieve diversified combustion states of the burner. For example, when the first control valve 404 and the second control valve 405 control the first air inlet pipe 401 and the second air inlet pipe 402 to be open respectively, the four ring gas distribution channels simultaneously supply gas to the burner. Then, the four ring gas paths on the burner corresponding to the gas distribution channels arranged from the inside to the outside along the ring line burn and provide heat simultaneously, providing the burner with a high-firepower four-ring gas supply mode, with a large heating area and good uniformity.

[0262] When either the first control valve 404 or the second control valve 405 individually controls the corresponding intake pipe 410 to open, and the other intake pipe 410 is closed, the spaced double-ring gas distribution channels simultaneously supply gas to the burner. The two ring gas paths on the burner corresponding to the gas distribution channels supplying gas burn simultaneously for heating. The gas supply structure provides the burner with two uniform and synchronous double-ring gas supply modes. Because there is a certain distance between the first gas distribution channel 205 and the third gas distribution channel 207, or between the second gas distribution channel 206 and the fourth gas distribution channel 208, the heating in the double-ring gas supply mode is more uniform. Since the heating area of ​​the corresponding gas path on the burner for the second gas distribution channel 206 is larger than that for the first gas distribution channel 205, and the heating area of ​​the corresponding gas path for the fourth gas distribution channel 208 is larger than that for the third gas distribution channel, the heating effect when the second control valve 405 controls the second intake pipe 402 to open alone is better than when the first control valve 404 controls the first intake pipe 401 to open alone, providing more heat.

[0263] The third type of gas supply structure provided in this embodiment includes a gas distribution component 200 that, based on the second type of gas supply structure described above, further includes a central air intake channel 233 and a central air distribution channel 209 disposed on the inner ring of the first air distribution channel 205; the air intake component 400 also includes a central air intake pipe 403 corresponding to the central air intake channel 233.

[0264] This third type of gas supply structure, by adding a central gas distribution channel 209, sets the gas distribution assembly 200 as a five-ring gas distribution channel structure. This connects the central intake channel 233 with the central gas distribution channel 209. The first intake channel 231 connects with the non-adjacent first gas distribution channel 205 and the third gas distribution channel 207, and the second intake channel 232 connects with the non-adjacent second gas distribution channel 206 and the fourth gas distribution channel 208, providing a five-ring gas supply mode for the burner. This expands the gas distribution area and the gas flow area on the burner. The multi-ring gas supply mode increases the diversity of flame output methods and the flexibility of the heating area, meeting various cooking needs.

[0265] Optionally, such as Figure 17 As shown, based on the second type of gas supply structure, in the third type of gas supply structure, the switching device further includes a central control valve 406, which is used to control the conduction state and / or intake flow of the central intake pipe 403, so as to adjust the combustion state of the independent gas path corresponding to the central gas distribution channel 209 on the burner.

[0266] Here, when the central control valve 406 is in the first state, the central intake pipe 403 is closed, the central intake channel 233 has no air intake, and the central distribution channel 209 does not supply gas to the burner. When the central control valve 406 is in the second state, the central intake pipe 403 is open, introducing external gas into the central intake channel 233, and the central distribution channel 209 connected to it supplies gas to the burner, where combustion and heating occur in the gas path corresponding to the central distribution channel 209 in the burner. Optionally, the central control valve 406 can be set with multiple positions between the first and second states to adjust the intake flow rate of the central intake pipe 403. Alternatively, the intake flow rate can be adjusted by separately installing a gas regulating valve on the intake pipe 410.

[0267] Thus, the central control valve 406, the first control valve 404, and the second control valve 405 are used to control the conduction state and / or air flow of the central air intake pipe 403, the first air intake pipe 401, and the second air intake pipe 402, respectively, so as to adjust the conduction state of the air distribution channel corresponding to the air intake pipe 410.

[0268] Optionally, such as Figure 18 As shown, based on the second type of gas supply structure described above, in the third type of gas supply structure, the second control valve 405 of the switching device, in addition to adjusting the conduction state and / or air flow rate of the second air intake pipe 402, is also used to adjust the conduction state and / or air flow rate of the central air intake pipe 403. While simultaneously adjusting the second gas distribution channel 206 and the fourth gas distribution channel 208, the second control valve 405 can also adjust the combustion state of the independent gas path corresponding to the central gas distribution channel 209 on the burner.

[0269] Here, when the second control valve 405 is used to adjust the conduction state and / or intake flow of the central intake pipe 403 and the second intake pipe 402, the combustion state of the corresponding independent air passage on the burner includes at least the following:

[0270] When the second control valve 405 is in the first state, the central intake pipe 403 is open, and the second intake pipe 402 is closed. The central intake pipe 403 introduces external gas into the central intake channel 233, and the central distribution channel 209 connected to it supplies gas to the burner, so the corresponding independent gas path on the burner burns; the second intake channel 232 has no gas intake, and the second distribution channel 206 and the fourth distribution channel 208 connected to it do not supply gas to the burner. In this state, combined with the state of the first control valve 404, the gas supply structure can realize a central loop gas supply mode for the burner only (the first control valve 404 is in the first state, and the first distribution channel 205 and the third distribution channel 207 do not supply gas to the burner), or a small three-loop gas supply mode (the first control valve 404 is in the second state, and the first distribution channel 205 and the third distribution channel 207 supply gas to the burner simultaneously).

[0271] When the second control valve 405 is in the second state, both the central intake pipe 403 and the second intake pipe 402 are open, introducing external gas into the central intake channel 233, the second distribution channel 206, and the fourth distribution channel 208. At this time, the corresponding independent gas paths of the central distribution channel 209, the second distribution channel 206, and the fourth distribution channel 208 on the burner burn simultaneously. In this state, combined with the state of the first control valve 404, the gas supply structure can achieve either a large three-ring gas supply mode (the first control valve 404 is in the first state, and the first distribution channel 205 and the third distribution channel 207 do not supply gas to the burner) or a five-ring gas supply mode (the first control valve 404 is in the second state, and the first distribution channel 205 and the third distribution channel 207 simultaneously supply gas to the burner). In this state, the large three-ring gas supply mode, compared to the small three-ring gas supply mode, has a larger combustion area and a wider heating area on the burner due to the open gas path, resulting in better heating performance.

[0272] When the second control valve 405 is in the third state, the central air intake pipe 403 is closed, and the corresponding central air intake channel 233 is not supplied with air; the second air intake pipe 402 is open, and the second air distribution channel 206 and the fourth air distribution channel 208 connected to it simultaneously supply air to the burner. At this time, the independent air path corresponding to the central air distribution channel 209 on the burner stops combustion, while the independent air paths corresponding to the second air distribution channel 206 and the fourth air distribution channel 208 on the burner burn simultaneously. In this state, combined with the state of the first control valve 404, the air supply structure can realize the burner's large dual-ring air supply mode (the first control valve 404 is in the first state, and the first air distribution channel 205 and the third air distribution channel 207 do not supply air to the burner), or the four-ring air supply mode (the first control valve 404 is in the second state, and the first air distribution channel 205 and the third air distribution channel 207 simultaneously supply air to the burner).

[0273] When the second control valve 405 is closed, the central air intake pipe 403 and the second air intake pipe 402 are simultaneously closed, and neither the corresponding central air intake channel 233 nor the second air intake channel 232 supplies gas to the burner. At this time, when the first control valve 404 is in the second state, the burner adopts a small dual-ring gas supply mode. Compared with the large three-ring gas supply mode, the small three-ring gas supply mode in this state can achieve a stable and uniform heating effect with low heat output.

[0274] Thus, by switching the device, the gas supply structure can be adjusted to control the gas supply state of the burner, thereby controlling the combustion state of the corresponding gas path on the burner. By changing the gas intake of the gas supply path, multiple gas supply modes can be achieved, enabling the burner to have multiple flame patterns and adapt to different cooking needs.

[0275] Combination Figures 1 to 12As shown, this disclosure provides a burner including the aforementioned gas distribution plate.

[0276] Optionally, the burner may also include components such as a burner cap assembly and a burner head assembly.

[0277] like Figure 19 As shown, the burner cap assembly 100 includes a first annular sub-burner cap 101 and a second annular sub-burner cap 102, with the second annular sub-burner cap 102 sleeved around the outer periphery of the first annular sub-burner cap 101. Optionally, the first annular sub-burner cap 101 has two separate annular combustion chambers, one inner and one outer, and similarly, the second annular sub-burner cap 102 also has two separate annular combustion chambers, one inner and one outer. Here, the annular combustion chambers correspond to the positions of the corresponding gas distribution channels. The gas distribution plate 200 rectifies the gas flow and sends it into the corresponding annular combustion chamber. The annular combustion chambers within the same annular sub-burner cap do not affect each other, and the interconnected annular combustion chambers in different annular sub-burner caps can burn simultaneously, enabling the burner cap assembly 100 to achieve multiple ignition patterns on the burner.

[0278] Optionally, the burner assembly 100 further includes a central burner 103, disposed inside the first annular sub-burner 101, and concentrically arranged with the first annular sub-burner 101 and the second annular sub-burner 102; the gas distribution plate also cooperates with the central burner 103 to define a central combustion chamber. The central burner 103 is connected to the central air intake channel 233 of the gas distribution plate, the central gas distribution channel 209, the central annular mixing chamber 303 of the furnace cavity assembly, and the central air intake pipe 403 of the air intake assembly.

[0279] like Figure 21 , 23 As shown, the partition wall 107 disposed in the first annular sub-flame cap 101 is named the first partition wall 1016. The first partition wall 1016 is located between the first inner annular wall 1011 and the first outer annular wall 1013, and defines a first air passage 1018 (the inner annular air passage 110 of the first annular sub-flame cap 101) between the first inner annular wall 1011 and a second air passage 1019 (the outer annular air passage 111 of the first annular sub-flame cap 101) between the first outer annular wall 1013. The first flame hole 1012 is connected to the first air passage 1018, and the second flame hole 1014 is connected to the second air passage 1019. Similarly, the partition wall disposed in the second annular sub-flame cap 102 is named the second partition wall. The interior of the second annular sub-flame cap 102 is also defined by the second partition wall as a third air passage (inner ring) and a fourth air passage (outer ring) that are not connected to each other.

[0280] Then, install the burner cap assembly 100 onto the gas distribution assembly 200, as follows: Figure 23As shown, at this time, the first air passage and the first air distribution passage cooperate to define the first annular combustion chamber 120; the second air passage and the second air distribution passage cooperate to define the second annular combustion chamber 130; the third air passage and the third air distribution passage cooperate to define the third annular combustion chamber 140; and the fourth air passage and the fourth air distribution passage cooperate to define the fourth annular combustion chamber 150. Among them, the first annular combustion chamber 120 and the third annular combustion chamber 140 are connected; and the second annular combustion chamber 130 and the fourth annular combustion chamber 150 are connected.

[0281] This design allows the first and third burner holes to share the same gas supply path, as do the second and fourth burner holes. This enables simultaneous adjustment of the flame intensity for non-adjacent burner holes supplied with the same gas path, eliminating the need for separate adjustments and reducing the complexity of burner adjustment. During flame intensity adjustment, the burner holes on both sides of the same annular sub-burner cap can be adjusted independently and opened / closed separately. This allows the burner cap to adapt to scenarios with varying heating areas requiring uniform heating, avoiding the situation where the inner and outer ring wall burner holes share a single gas path, preventing them from being adjusted to the same intensity and opening / closing simultaneously, which is unsuitable for scenarios with varying heating areas requiring uniform heating.

[0282] The burner cap assembly 100 and the gas distribution assembly 200 work together to form multiple independent annular combustion chambers, and the non-adjacent combustion chambers are connected. In this way, since the same gas flow path can supply gas to multiple combustion chambers on non-adjacent rings, when the flow rate of the gas flow path changes, the gas in the corresponding multiple combustion chambers will also change synchronously. At the same time, since the multiple combustion chambers corresponding to the same gas flow path are located on different rings, the firepower of different heating positions of the burner can be synchronously adjusted, thereby effectively improving heating uniformity and reducing the complexity of operation.

[0283] Optionally, among the burner holes sharing the same gas supply path, the opening area of ​​the inner burner hole is smaller than that of the outer burner hole. Since the heating area increases towards the outer edge of the cookware, this design makes the burner holes more adaptable to the heating area of ​​various parts of the cookware. That is, if the first burner hole and the third burner hole share the same gas supply path, then the opening area of ​​the first burner hole is smaller than that of the third burner hole.

[0284] Optionally, from the inside out, the ratio of the flame area of ​​the combustion channels corresponding to the air distribution channels connected by the same air intake channel is 1:2 to 1:5. Specifically, the ratio of the opening area of ​​the first flame hole to the flame area of ​​the third flame hole is 1:2 to 1:3; the ratio of the opening area of ​​the second flame hole to the flame area of ​​the fourth flame hole is 1:3 to 1:5.

[0285] In this embodiment of the disclosure, the burner includes the aforementioned first type of gas distribution plate, second type of gas distribution plate, or third type of gas distribution plate, depending on the structure of the gas distribution plate, and correspondingly, a first type of burner, a second type of burner, or a third type of burner is obtained.

[0286] In this embodiment of the disclosure, the burner includes the aforementioned first type of gas distribution plate, second type of gas distribution plate, or third type of gas distribution plate, depending on the structure of the gas distribution plate, and correspondingly, a first type of burner, a second type of burner, or a third type of burner is obtained.

[0287] In this embodiment of the disclosure, the burner includes the aforementioned first type of gas supply structure, second type of gas supply structure, or third type of gas supply structure, depending on the gas supply structure used for the burner. Accordingly, a variety of burners with different gas supply structures are obtained.

[0288] The burner of this disclosure embodiment can provide a flexible and varied heating area, and has a large heating area, making it suitable for a variety of cooking requirements.

[0289] This disclosure provides a gas stove, including the aforementioned burner.

[0290] In some embodiments, the gas stove includes one or more of the aforementioned burners. When the gas stove includes multiple aforementioned burners, the burners used may be different.

[0291] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A gas supply structure for a burner, characterized in that, include: The burner assembly includes multiple concentrically arranged annular mixing chambers; A gas distribution assembly is disposed above the burner assembly; the gas distribution assembly includes an air inlet channel and a gas distribution channel, the air inlet slot of the air inlet channel is connected to a corresponding mixing chamber, and at least one of the air inlet channels is connected to a gas distribution channel located on a non-adjacent ring; each air inlet channel formed by the separation member includes a connected radial extension and a circumferential extension, wherein the circumferential extension is connected to the outer end of the radial extension of its corresponding air inlet channel and extends along a circumference, and supplies fuel gas to at least its corresponding connected gas distribution channel; The air inlets of adjacent air inlets are arranged on different rings at the bottom of the air distribution assembly, and are staggered to correspond to the corresponding annular mixing chambers.

2. The gas supply structure according to claim 1, characterized in that, The air intake slot of the air intake channel is located on the center side of the bottom of the air distribution component.

3. The gas supply structure according to claim 1, characterized in that, The air distribution assembly includes a first air intake channel and a second air intake channel that are arranged in a group and correspond one to one; Multiple sets of the first air intake channel and the second air intake channel are arranged at equal circumferential arc intervals.

4. The gas supply structure according to claim 1, characterized in that, The number of annular mixing chambers corresponds to the number of air intake channels. Air intake channels that are connected to the same air distribution channels have their air intake ends connected to the same annular mixing chambers.

5. The gas supply structure according to any one of claims 1 to 4, characterized in that, The air distribution assembly has a disc-shaped housing, the air intake channel and the air distribution channel are formed in the housing, and the air distribution channel is opened on the top surface of the housing.

6. A burner, characterized in that, It includes a burner assembly, a burner head assembly, and a gas supply structure for a burner as described in any one of claims 1 to 5.

7. The burner according to claim 6, characterized in that, The flame cap assembly includes independent combustion channels with different rings from the inside out; The gas distribution channel of the gas distribution assembly supplies gas to the corresponding combustion channel.

8. The burner according to claim 7, characterized in that, The flame cap assembly also includes one or more annular flame caps; At least one annular flame cap has an internal partition structure that divides the interior of the annular flame cap into multiple independent combustion channels.

9. The burner according to claim 7, characterized in that, Along the ring line from the inside out, the combustion channels corresponding to the air distribution channels connected by the same air intake channel have a flame area ratio of 1:2 to 1:

5.

10. A gas stove, characterized in that, Includes the burner according to any one of claims 1 to 9.

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