Gas distribution disc, burner and gas stove

Abstract

The application relates to the technical field of gas stoves, and discloses a gas distribution disc, which comprises an air inlet part and a gas distribution part. The air inlet part comprises a plurality of air inlet channels, and each air inlet channel extends from inside to outside. The gas distribution part comprises gas distribution channels located at different ring lines from inside to outside, and part or all of the gas distribution channels on the non-adjacent ring lines are communicated with the same air inlet channel. The gas distribution disc provided by the embodiment of the application communicates the gas distribution channels on part or all of the non-adjacent ring lines of the gas distribution part with the same air inlet channel, so that at least one air inlet channel can respectively deliver gas to the respective corresponding fire hole rings of the gas distribution channels of different ring lines. Meanwhile, since the respective ring lines of the fire hole rings corresponding to the same air inlet channel are located at different inside-outside heating positions, the gas flow regulation for a single air inlet channel can simultaneously realize the synchronous regulation of the fire power of the inside-outside different heating positions, thereby effectively improving the heating uniformity and reducing the complexity of operation. The application further discloses 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 distribution disc, 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 gas 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, the gas distribution disc and the fire cover, etc.), the control valve, the igniter, the injection pipe, etc. 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 injection 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, each circle of fire hole burns as a ring of fire, and 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 the gas distribution disc. This structure design often cannot meet the heating needs in different cooking scenarios. For example, in the scene of frying, grilling and other requirements for uniform heating, different food quantities have different heating area requirements. 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 is easy to 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. The summary is not an extensive overview of the disclosure, and is not intended to identify key / critical elements of the embodiments or to delineate the scope of the embodiments. Its sole purpose is to present some aspects of the disclosed embodiments in a simplified form as a prelude to the more detailed description that is presented later.

[0006] The embodiments of the present disclosure provide a gas distribution disc, 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.

[0007] In some embodiments, the gas distribution disc comprises: a gas inlet portion comprising a plurality of gas inlet passages, each gas inlet passage extending from inside to outside; a gas distribution portion comprising gas distribution passages located at different ring lines from inside to outside, and some or all of the gas distribution passages on non-adjacent ring lines are in communication with the same gas inlet passage.

[0008] In some embodiments, the gas stove comprises the burner shown in the above embodiments.

[0009] In some embodiments, the gas stove comprises the burner shown in the above embodiments.

[0010] The gas distribution disc, the burner and the gas stove provided by the embodiments of the present disclosure can achieve the following technical effects:

[0011] The gas distribution disc provided by the embodiments of the present disclosure connects the gas distribution passages on part or all of the non-adjacent ring lines of the gas distribution part with the same gas inlet passage, so that at least one gas inlet passage can respectively deliver gas to the respective fire hole rings of the gas distribution passages of different ring lines. In this way, when the gas flow of the gas inlet passage changes, the gas of the corresponding gas distribution passage and fire hole ring will also change synchronously. At the same time, since the respective ring lines of the fire hole rings corresponding to the same gas inlet passage are at different inner and outer heating positions, the adjustment of the gas flow of a single gas inlet passage can simultaneously achieve synchronous adjustment of the firepower of the inner and outer different heating positions, thereby effectively improving the heating uniformity and reducing the complexity of operation.

[0012] The general description above and the following description below are exemplary and explanatory only and are not restrictive of the application. BRIEF DESCRIPTION OF DRAWINGS

[0013] One or more embodiments are illustrated by way of example with reference to the accompanying drawings, which are schematic and are not intended to be limiting of the embodiments, in which like reference numerals refer to like elements in the various figures of the drawings, the drawings are not intended to be to scale and in which:

[0014] Figure 1 is an exploded structural schematic view of a gas distribution disc provided by an embodiment of the present disclosure;

[0015] Figure 2 is an exploded structural schematic view of a gas distribution disc provided by an embodiment of the present disclosure;

[0016] Figure 3 is an exploded structural schematic view of a gas distribution disc provided by an embodiment of the present disclosure;

[0017] Figure 4 is an exploded structural schematic view of another gas distribution disc provided by an embodiment of the present disclosure;

[0018] Figure 5 is an exploded structural schematic view of another gas distribution disc provided by an embodiment of the present disclosure;

[0019] 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;

[0020] Figure 7 This is a schematic diagram of the structure of the lower air distribution plate of another air distribution plate provided in this embodiment of the present disclosure;

[0021] Figure 8 This is an exploded structural diagram of another gas distribution plate provided in this embodiment;

[0022] Figure 9 This is an exploded structural diagram of another gas distribution plate provided in this embodiment;

[0023] Figure 10 This is an exploded structural diagram of another gas distribution plate provided in this embodiment;

[0024] Figure 11 This is an exploded structural diagram of another gas distribution plate provided in this embodiment;

[0025] Figure 12 This is a schematic diagram of the structure of the lower air distribution plate of another air distribution plate provided in this embodiment of the present disclosure;

[0026] Figure 13 This is a schematic diagram of another air distribution plate provided in an embodiment of this disclosure;

[0027] Figure 14 This is a schematic diagram of the structure of a burner provided in an embodiment of this disclosure;

[0028] Figure 15 This is a schematic diagram of a gas supply structure for a burner provided in an embodiment of the present disclosure;

[0029] Figure 16 This is a schematic diagram of the connection relationship of the air distribution plate in an embodiment of this disclosure;

[0030] Figure 17 This is a connection diagram of a gas supply structure for a burner provided in an embodiment of this disclosure;

[0031] Figure 18 This is a connection diagram of another gas supply structure for a burner provided in an embodiment of this disclosure;

[0032] Figure 19 This is a schematic diagram of a gas supply structure for a burner provided in an embodiment of the present disclosure;

[0033] Figure 20 This is an exploded view of another gas supply structure for a burner provided in an embodiment of this disclosure.

[0034] Figure label:

[0035] 100. Flame cap; 101. First ring sub-flame cap; 102. Second ring sub-flame cap; 103. Central flame cap;

[0036] 200, gas distribution disc; 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;

[0037] 300, burner tip; 310, mixing cavity; 301, first ring mixing cavity; 302, second ring mixing cavity; 303, center ring mixing cavity; 320, ejector pipe;

[0038] 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; 407, total control valve. DETAILED DESCRIPTION

[0039] The following description and drawings are illustrative of the specific embodiments herein and are not intended to be limiting. Parts and features of some embodiments can be included or replaced by parts and features of other embodiments. The scope of the embodiments herein includes the whole area of the claims as well as any available equivalents of the claims. In this document, the terms "first", "second" and the like do not denote any order, but are used to distinguish one element from another. In fact, a first element can also be referred to as a second element and vice versa. Also, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a structure, device or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such structure, device or apparatus. An element proceeded by "comprises a" does not, without further constraints, exclude the presence of additional elements of the structure, device or apparatus that includes that element. The various embodiments are described in a progressive manner, each emphasizing the differences with respect to the other embodiments, and the same or similar parts between the various embodiments are cross-referenced.

[0040] In this document, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description herein and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In the description herein, unless otherwise specified and limited, the terms "mount", "connect", "connection" should be interpreted broadly, for example, it can be a mechanical connection or an electrical connection, it can be a communication between two elements inside, it can be a direct connection or an indirect connection through an intermediate medium, and the specific meaning of the above terms can be understood by the person skilled in the art according to the specific circumstances.

[0041] In this document, the term "multiple" means two or more, unless otherwise specified.

[0042] In this document, the character " / " represents an "or" relationship between the objects before and after it. For example, A / B means: A or B.

[0043] In this document, the term "and / or" is a description of the relationship between the objects, which means that there can be three relationships. For example, A and / or B means: A or B, or, A and B, the three relationships.

[0044] It should be noted that the embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0045] Generally, the gas distribution disc 200 is used in cooperation with the burner head and the fire cap 100. One optional assembly mode is to set the gas distribution disc between the burner head 300 and the fire cap 100 and configure it as a gas (or mixed gas of air and gas) intermediate flow path connecting the two, so that the gas flows into the fire cap 100 from the burner head 300 and is finally ignited to form a flame at the fire hole of the fire cap 100.

[0046] Here, to improve the heating area and heating uniformity of the burner to the container above the fire cap 100, the fire cap is generally composed of two or more annular sub-fire caps, which are coaxially arranged and sequentially sleeved from the inside out. Each annular sub-fire cap is provided with a plurality of fire holes, and the plurality of fire holes are uniformly arranged along the circumference of the annular sub-fire cap, so that the plurality of fire holes on each annular sub-fire cap can form an annular flame, and the plurality of annular flames can heat the container at their respective ring positions.

[0047] Optionally, the same annular sub-fire cap 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 cap.

[0048] Correspondingly, the gas distribution disc 200 has a plurality of gas flow channels for gas flow. After the gas flows into the gas distribution disc 200 from the burner head, it can flow through the plurality of gas flow channels and finally be distributed to the respective annular sub-fire caps of the fire cap to supply gas to the fire holes at different annular positions. In this embodiment, the burner head has a plurality of independent annular gas mixing chambers, which are coaxially arranged and sequentially sleeved from the inside out. 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 one or more gas flow channels corresponding thereto are supplied with gas, thereby affecting whether the corresponding annular sub-fire cap can form a flame.

[0049] For example, if there is no gas supply in a certain annular gas mixing chamber, there will be no gas flowing through the corresponding gas flow channel, so that no flame will be formed on the ring line of the corresponding annular sub-fire cap. On the contrary, if there is gas supply in the annular gas mixing chamber, a flame can be formed on the ring line of the corresponding annular sub-fire cap. At the same time, the flow rate of the gas from the annular gas mixing chamber can also determine the size of the flame formed on the corresponding annular sub-fire cap. Generally, the gas flow rate and the flame size are positively correlated. 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.

[0050] The gas distribution disc 200 provided by the embodiment of the present disclosure comprises a gas inlet part and a gas distribution part which are in communication with each other. The gas inlet part is used to communicate with the side of the annular gas mixing cavity, so as to introduce the gas from the annular gas mixing cavity into the gas distribution disc 200 and deliver the gas to the gas distribution part; the gas distribution part is used to communicate with the side of the fire cover, so as to supply the gas introduced by the gas inlet part to the corresponding annular sub-fire cover.

[0051] In the embodiment, the gas inlet part comprises a plurality of gas inlet channels 2001, each of which extends from inside to outside. For example, in the structure of the gas distribution disc 200 shown in the figure, the gas inlet channel 2001 extends from the position of the center of the circle (or close to the center of the circle) to the circumferential direction, and an optional extension direction shown in the embodiment is the radial direction of the gas distribution disc.

[0052] Generally, the extension length of the gas inlet channel 2001 from inside to outside is determined by the ring line position of the corresponding burner ring-shaped gas mixing cavity and / or annular sub-fire cover, so as to ensure that the gas inlet channel 2001 can at least communicate with the corresponding burner ring-shaped gas mixing cavity and at least deliver the gas to the ring line position of one or more corresponding annular sub-fire covers.

[0053] In the embodiment, the gas distribution part comprises gas distribution channels 2002 located at different ring lines from inside to outside, and part or all of the gas distribution channels 2002 on the non-adjacent ring lines are in communication with the same gas inlet channel 2001.

[0054] The gas distribution disc provided by the embodiment communicates the gas distribution channels 2002 on part or all of 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 the gas to the corresponding fire hole ring of the gas distribution channel 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. At the same time, 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 realize the synchronous adjustment of the firepower of the inside and outside heating positions, thereby effectively improving the heating uniformity and reducing the complexity of operation.

[0055] Optionally, the number of ring lines of the gas distribution channel 2002 is consistent with the number of fire hole ring lines on the fire cover, and the ring line positions of the gas distribution channel 2002 correspond to the positions of the fire hole ring lines, so that each gas distribution channel 2002 can deliver the gas to a group of fire holes at the corresponding position.

[0056] Optionally, the number of gas distribution channels 2002 corresponding to each ring line is one or more; wherein, the gas distribution channels 2002 corresponding to the same ring line are evenly distributed along the ring line, so that the gas can enter the annular sub-burner cap from the gas distribution channels 2002 at different positions of the ring line in a relatively uniform manner, so as to ensure the uniformity and stability of the flame distribution.

[0057] In an optional embodiment, the air distribution plate 200 is constructed as a disc-shaped semi-enclosed housing adapted to the annular mixing chamber and the burner cap, with both the air intake and the air distribution portion formed in the housing.

[0058] Optionally, the intake passage 2001 is formed inside the housing, and one or more intake slots for connecting to the annular mixing chamber are provided on the bottom surface of the housing; Optionally, each intake passage 2001 corresponds to an independent intake slot, so that each intake passage 2001 can be connected to the annular mixing chamber through the intake slot, and the gas enters the intake passage from the annular mixing chamber through the intake slot.

[0059] In some embodiments, the air inlets of the plurality of air inlet channels 2001 are disposed on the central side of the gas distribution plate 200 and correspond to the positions of their respective annular mixing chambers. For example, the air inlet channel 2001 includes a first air inlet channel and a second air inlet channel, wherein the first air inlet channel corresponds to the annular mixing chamber on the inner side of the burner head and the second air inlet channel corresponds to the annular mixing chamber on the outer side of the burner head, and the annular line where the air inlet of the first air inlet channel is located is disposed on the inner side of the annular line where the air inlet of the second air inlet channel is located.

[0060] Figure 1 , Figure 4 , Figure 6 and Figure 8 In the structure of the gas distribution plate 200 shown, the air inlet of the air intake channel 2001 is located on the center side of the gas distribution plate 200. Here it is defined as the first type of air intake channel. That is, the air intake end of the first type of air intake channel is located on the center side and the air outlet end is located on the circumferential side. After the gas enters the gas distribution plate 200, its main flow direction is from the center side to the circumferential side.

[0061] In some other embodiments, such as Figure 13 As shown, the intake form of the intake passage 2001 can also be a second type of intake passage 2213 and / or a third type of intake passage 2214.

[0062] Here, the intake end of the second type of intake channel 2213 is located on the circumferential side, and the outlet end is located at least on the center side. That is, the main flow direction of the gas through the second type of intake channel 2213 and the gas distribution plate is from the circumferential side to the center side.

[0063] The gas inlet end of the third type of gas inlet passage 2214 is arranged at the middle ring, and the gas outlet end at least includes the center side and the circumferential side, that is, the main flow direction of the gas flowing through the gas distribution disc via the third type of gas inlet passage 2214 is from the middle ring to the center side and the circumferential side at the same time.

[0064] 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 circumferential side, which can shorten the flow distance of the gas flowing from the gas inlet end to the circumferential side. Since the 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, thereby improving the ignition response speed of the burner when the ignition is in the outer ring side of the burner.

[0065] 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, thereby conveying the gas to the respective corresponding different ring lines of the gas distribution passage. Different gas inlet passage structures can be adapted to the differentiated gas supply requirements of two or more gas distribution passages respectively, improve the uniformity of gas distribution to different gas distribution passages and the stability of gas flow and pressure, thereby effectively guaranteeing the combustion effect of the gas stove.

[0066] Optionally, as shown in Figure 13 The gas inlet passage is constructed as a center-symmetric structure, where the same gas inlet passage is in communication with each position of the gas inlet passage and shares the same gas inlet end, and the gas flows into the gas inlet passage via the same gas inlet end and then flows to each position of the gas inlet passage.

[0067] Further optionally, for the gas distribution disc provided with two or more gas inlet passages as described above, for example, a certain gas distribution disc is provided with both the first type of gas inlet passage and the second type of gas inlet passage 2213, or a certain gas distribution disc is 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 burner holes corresponding to different types of gas inlet passages as much as possible.

[0068] 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 ring type annular gas mixing chamber is still used for gas supply, there may be a problem that the gas inlet end cannot correspond to the position of the annular gas 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 directly supply gas to the corresponding gas inlet passage through the injection pipe 320.

[0069] Optionally, the gas inlet end of the gas inlet passage is constructed to be adapted to the caliber of the gas outlet of the injection pipe 320.

[0070] 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.

[0071] As shown in the figure, Figure 13 The embodiment of the present disclosure is provided with three ejectors 320, two of which are arranged in parallel, and the two ejectors 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 ejectors 320 will interfere with the ejector 320 supplying gas to the central gas inlet channel, so the third ejector 320 is arranged at an angle of 90° with respect to the other two ejectors 320.

[0072] Alternatively, the gas distribution channels are provided on the top surface of the shell, and the gas distribution channels serve as the "gas outlet" of the gas distribution disc. The gas from the gas inlet channel can flow out of the gas distribution disc from the gas distribution channel corresponding to the gas inlet channel, and then enter the fire cap.

[0073] 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.

[0074] Alternatively, the connecting end surface of the lower gas distribution disc 210 and the upper gas distribution disc 290 is a plane. The sealing property of the connection is improved.

[0075] Alternatively, the lower gas distribution disc 210 is a casting or a forged piece.

[0076] 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.

[0077] As shown in the figure, Figures 1-3 The first type of gas distribution disc provided by the embodiment of the present disclosure is described, which includes a lower gas distribution disc 210 and an upper gas distribution disc 290. The lower gas distribution disc 210 has one or more gas inlet zones, and each gas inlet zone is provided with a separation structure for separating the gas inlet zone into a plurality of gas inlet channels. The upper gas distribution disc 290 includes gas distribution channels located at different ring lines from inside to outside, and some or all of the gas distribution channels of non-adjacent ring lines are connected to the same gas inlet channel.

[0078] 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] Optionally, the annular member is a circular rib plate member with a certain height.

[0084] 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.

[0085] 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 defined as the outer side air inlet passage 2211 and the inner side air inlet passage 2212 respectively. 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.

[0086] 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.

[0087] Optionally, the part of the convex wall surface of the disc wall 2111 of the lower disc body 211 and the air inlet partition member form an air supplement passage 270. As shown, Figure 1 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 form an air supplement passage 270. Then, an 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.

[0088] Optionally, the air supplement passage 270 includes a first air supplement passage and a second air supplement passage.

[0089] The first air supplement passage is configured to extend from the bottom of the air distribution disc outwardly and inwardly, 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 at least to the space between the outer annular member 214 and the middle annular member 213. The first air supplement passage is used for transporting air to the space between the first air distribution passage and the second air distribution passage, and the first air supplement passage extends along the circumferential direction of the ring line.

[0090] The second air supplement passage is configured to extend from the bottom of the air distribution disc outwardly and inwardly, 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 at least to the space between the inner annular member 212 and the middle annular member 213. The second air supplement passage is used for transporting air to the space between the second air distribution passage and the third air distribution passage, and the second air supplement passage extends along the circumferential direction of the ring line.

[0091] 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.

[0092] 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.

[0093] 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.

[0094] In the 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.

[0095] In some optional embodiments, a plurality of first air supplement channels are arranged at uniform intervals in the circumferential direction of the air distribution disc, and / or a plurality of second air supplement channels are arranged at uniform intervals in the circumferential direction of the air distribution disc. In this way, air can be supplemented from multiple positions in the circumferential direction of the air distribution disc, further ensuring the stability and uniformity of flame combustion.

[0096] In the embodiment of the present disclosure, 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 on the lower disc body 211 in the radial direction around the center of the lower disc body 211.

[0097] 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 sealing connection with the connecting end surface of the upper air distribution disc 290.

[0098] 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.

[0099] In the embodiment of the present disclosure, the structure of the air inlet partitioning member is not limited, and it is only required to guide the air inlet into the partial or all non-adjacent annular air distribution channels of the upper air distribution disc 290.

[0100] 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.

[0101] 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.

[0102] 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.

[0103] 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".

[0104] Optionally, the plurality of air inlet passages are uniformly arranged along the circumference with equal arc 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, 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 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.

[0105] 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.

[0106] 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 of 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.

[0107] 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.

[0108] 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 of the partition member 222 is arranged in the circumferential part of the air intake cavity 221, and the vertical part of the partition member 222 is arranged in the radial part of the air intake cavity 221, thereby dividing the air intake cavity 221 into two air intake passages.

[0109] Optionally, the center line of the radial extension part of the air intake passage is an arc or a straight line.

[0110] 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.

[0111] 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 formed after the lower air distribution disc 210 is connected to the upper air distribution disc 290 is improved.

[0112] In the embodiment of the present disclosure, the communication mode of the air intake partition member 220 in the lower air distribution disc 210 with the annular air intake groove on the lower disc body 211 is not limited, as long as the communication is achieved and the flow of the fuel gas is ensured. For example, the disc wall 2111 corresponding to each annular air intake groove is provided with an air intake port in communication 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

[0113] 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 in communication is formed on the disc wall 2111 and the bottom wall at the position where the air intake passage and the annular air intake groove overlap.

[0114] Optionally, the air intake groove of the radial extension part of the air intake passage is configured as an arc-shaped concave structure capable of smoothly transitioning with the annular mixing cavity, so as to reduce the path resistance of the fuel gas flowing from the annular mixing cavity to the air distribution disc, and improve the smoothness of the fuel gas entering.

[0115] ​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.

[0116] In some embodiments, the circumferential extension part is connected to the outer end of the radial extension part of 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.

[0117] 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.

[0118] 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.

[0119] 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.

[0120] 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 needs, such as frying, grilling, and other cooking heating scenes.

[0121] 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.

[0122] 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 fire of the inner and outer multiple different heating positions, thereby effectively improving the heating uniformity and reducing the complexity of operation.

[0123] 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 they are arranged 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.

[0124] 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 Figure 8 , 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 symmetrically arranged.

[0125] 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.

[0126] In some embodiments, the first gas inlet channel 231 supplies gas to both the first gas distribution channel 205 and the third gas distribution channel 207, and the number of corresponding gas distribution channels supplied by the first gas inlet channel 231 is greater 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 greater than that of the second gas inlet channel 232, so as to adapt to the greater gas flow requirement of the first gas inlet channel 231.

[0127] 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 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, 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 sub-zone 230; the first gas inlet sub-zone 230 communicates with one annular gas inlet groove.

[0128] In this embodiment, the first gas inlet sub-zone 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 sub-zone 230, so that 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 sub-zone 230 is overall fan-shaped.

[0129] Optionally, the first gas inlet sub-zone 230 communicates with the annular gas inlet groove on the inner side.

[0130] 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 this 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 annular gas inlet grooves can be determined according to actual needs.

[0131] Optionally, the number of annular gas inlet grooves is 2. As shown in Figure 5 and Figure 9 As shown, 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.

[0132] Optionally, the first air intake sub-zone 230 is in communication with the middle annular air intake groove 202. The air intake area is enlarged.

[0133] In the embodiments of the present disclosure, the inner annular member 212, the middle annular member 213 and the outer annular member 214 are all circular ring members with a certain height. The height of each annular member can be different, which can be determined according to the actual structure. Optionally, the height of the inner annular member 212 and the outer annular member 214 located on the first disc surface of the lower disc body 211 is the same, so that the connecting end surface of the lower air distribution disc 210 is a plane. Optionally, the height of the annular member located on the outer side of the second disc surface is greater than the height of the annular member located on the inner side. As shown in Figure 5 and Figure 9 As shown in

[0134] 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 that the first arc segment 241 is an arc greater than or equal to a semicircle, and the first partition rib 240Ⅱ refers to that the first arc segment 241 is an arc less than a semicircle.

[0135] Optionally, the number of the first partition rib 240 is one or more. When the number of the first partition rib 240 is more than one, the plurality of first partition ribs 240 are arranged at intervals around the inner annular member 212, and the first arc segments 241 of the plurality of first partition ribs 240 are located on the same ring line.

[0136] In the embodiments of the present disclosure, the shape and the number of the first partition rib 240 are not limited, which can be determined according to the number of the first air intake sub-zone 230 divided by the lower air distribution disc 210.

[0137] Optionally, the first partition rib 240 includes a first partition rib 240Ⅰ. In the embodiments, the number of the first partition rib 240 is one, and the lower air distribution disc 210 is divided into one first air intake sub-zone 230. Optionally, the central angle of the first arc segment 241 of the first partition rib 240Ⅰ is 120°-180°. Optionally, the central angle of the first arc segment 241 of the first partition rib 240Ⅰ is 140°-160°. Optionally, the central angle of the first arc segment 241 of the first partition rib 240Ⅰ is 150°.

[0138] Optionally, the first partition rib 240 includes a first partition rib 240Ⅱ. In the embodiments, the number of the first partition rib 240Ⅱ is more than one, which is two, three, four or more, which can be arranged according to the uniform air intake. Optionally, as shown in Figure 8 the number of the first partition rib 240 is two, which is symmetrically arranged around the inner annular member 212. As shown in 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.

[0139] 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.

[0140] 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.

[0141] 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.

[0142] 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.

[0143] 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.

[0144] 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.

[0145] 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).

[0146] 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.

[0147] 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.

[0148] 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.

[0149] 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.

[0150] 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.

[0151] 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.

[0152] 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 annular lines from inside to outside, and part or all of the gas distribution passages of non-adjacent annular lines are in communication with one or more first air inlet sub-zones 230.

[0153] 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.

[0154] 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 area 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.

[0155] That is, the third type of gas distribution disc is based on the second type of gas distribution disc, the area 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 air supplement region, the air supplement outlet is arranged on the upper gas distribution disc 290, and the air channel is formed between the air supplement inlet 271 and the air supplement outlet, so that 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.

[0156] 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.

[0157] 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.

[0158] 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 channel 274 is formed between the inner annular member 212 and the second bent segment 244. In this embodiment, the air outlet side channel 274 is communicated with the air supplement inlet 271 of the air supplement region, forming an air channel, 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.

[0159] In this embodiment, the number of the second partition ribs 250 is different, and the forming method and structure of the air outlet side channel 274 are different.

[0160] 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 channel 274. The air supplement amount is increased.

[0161] 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 channel 274. The air supplement amount is increased.

[0162] 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 channels of the upper air distribution plate 290.

[0163] 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.

[0164] 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. They are respectively used for supplementing air for the inner side air distribution channel and the outer side air distribution channel, and improve the combustion effect.

[0165] 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.

[0166] 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. It plays a guiding role while also cooperating with the annular member on the outer side to play a certain supporting role.

[0167] Optionally, the arc guide plate 281 is formed along the outer ring line of the middle annular member.

[0168] In the above embodiments, the "height" refers to the height from the second disc surface of the lower disc body 211.

[0169] 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. It promotes the stability and uniformity of air flow.

[0170] 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.

[0171] Optionally, the air guide plate and the air distribution disc are integrally formed.

[0172] In the third type of air distribution disc of the embodiment of the present disclosure, the first partition rib 240 divides the first disc surface of the lower disc body 211 into two regions, one of which is the first air inlet partition 230 described above, and the remaining 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, realizing the air supply of all air distribution channels on the upper air distribution disc 290.

[0173] Therefore, in some embodiments, the lower air distribution disc 210 further comprises one or more second air inlet partitions, and the second air inlet partitions are configured with second air inlet channels 232; the second air inlet channels 232 are connected to part of the air distribution channels of the upper air distribution disc 290. In this embodiment, by configuring the second air inlet channels 232 to guide the air inlet to the set part of the air distribution channels, the flexibility of air distribution is further improved. In this embodiment, the configuration and implementation structure of the second air inlet channels 232 can refer to the corresponding part of the second type of air distribution disc described above, and will not be described here.

[0174] In the air distribution disc of the embodiment 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 to form an air distribution disc.

[0175] In some embodiments, in combination with Figures 1 to 11 As shown in the figure, the upper air distribution disc 290 comprises an upper disc body 291 and a plurality of annular air distribution members, and 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 disc surface (such as the second disc surface) of the upper disc body 291 from inside to outside, and each annular air distribution member is configured with an air distribution channel. Part or all of the air distribution channels of the non-adjacent annular air distribution members are connected to the same air inlet structure on the lower air distribution disc 210.

[0176] In the embodiment of 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.

[0177] Optionally, for the first type of air distribution disc, part or all of the air distribution channels 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.

[0178] Optionally, for the second type of gas distribution plate, the gas distribution passages of some or all of the non-adjacent annular gas distribution members on the upper gas distribution plate 290 are in communication with the first gas inlet sub-zone 230 on the lower gas distribution plate 210. When the lower gas distribution plate 210 includes a second gas inlet passage 232, the gas distribution passages of the remaining annular gas distribution members are in communication with the second gas inlet passage 232.

[0179] Optionally, for the third type of gas distribution plate, the gas distribution passages of some or all of the non-adjacent annular gas distribution members on the upper gas distribution plate 290 are in communication with the first gas inlet passage 231 on the lower gas distribution plate 210.

[0180] In the upper gas distribution plate 290 of the embodiments of the present disclosure, the other side disc surface (e.g., the first disc surface) of the upper disc body 291 is the connecting end surface of the upper gas distribution plate 290 and the lower gas distribution plate 210.

[0181] In some embodiments, as shown in FIGS. 1A and 1B, the other side disc surface of the upper disc body 291 is a flat surface. Figure 9 and simply Figure 11 As shown in FIGS. 1A and 1B, the other side disc surface of the upper disc body 291 is a flat surface. The connecting end surface of the lower gas distribution plate 210 is also a flat surface, and the two surfaces can be fixedly connected after being abutted.

[0182] In some embodiments, as shown in FIGS. 2A and 2B, the other side disc surface of the upper disc body 291 is further provided with a cooperating member 292. The cooperating member 292 is abutted with the gas inlet sub-zone (i.e., the gas inlet sub-zone member 220) on the lower gas distribution plate 210 to form a plurality of gas inlet passages. The sealing property of the gas inlet passages is improved to prevent gas leakage. Figure 2 Optionally, the cooperating member 292 includes a rib to be arranged on the other side disc surface of the upper disc body 291 in a manner suitable for the gas distribution structure on the lower gas distribution plate 210.

[0183] As shown in the first type of gas distribution plate in FIGS. 3A and 3B, the shape of the rib arranged on the other side disc surface of the upper disc body 291 is consistent with the shape of the gas inlet sub-zone member 220 and the partition member 222 arranged therein on the lower gas distribution plate 210.

[0184] Figure 2 Optionally, the cooperating member 292 protrudes from the other side disc surface of the upper disc body 291. The horizontal position of the upper disc body 291 is appropriately increased, the cross-sectional area of the air supplement passage 270 is increased, and the air supplement amount is improved.

[0185] In the embodiments of the present disclosure, the through hole arranged on the upper disc body 291 is the inner ring gas distribution port 204, which is in communication with the inner ring gas inlet port 201 on the lower gas distribution plate 210 to form an inner ring gas passage.

[0186] In the embodiments of the present disclosure, the through hole arranged on the upper disc body 291 is the inner ring gas distribution port 204, which is in communication with the inner ring gas inlet port 201 on the lower gas distribution plate 210 to form an inner ring gas passage.

[0187] ​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.

[0188] 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.

[0189] 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.

[0190] 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.

[0191] 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.

[0192] 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 outflow in the circumferential direction of the ring line.

[0193] 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.

[0194] Optionally, the first equal arc, the second equal arc and the third equal arc can be the same or different.

[0195] Optionally, each annular sub-gas member includes two annular ribs, and the annular passage between the two annular ribs is the sub-gas passage.

[0196] 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.

[0197] 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.

[0198] 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.

[0199] 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.

[0200] 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.

[0201] 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.

[0202] 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.

[0203] 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.

[0204] 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.

[0205] 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.

[0206] 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.

[0207] 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.

[0208] Optionally, the inner air supply outlet 275 is configured as a triangle.

[0209] Optionally, the outer air supplement outlet 276 is arranged along the arc of the ring line.

[0210] Of course, the upper gas distribution disc 290 of the present embodiment has the gas outlet structure for communicating with the air inlet channel on the upper disc body 291 in the air distribution channel of each annular air distribution member. The gas outlet communicates with the inner air inlet channel 2212 / first air inlet subarea 230 / first air inlet channel 231 or second air inlet channel 232 / outer air inlet channel 2211 required to be communicated with the air distribution channel. The number and shape are not limited and can be determined according to actual needs. According to the air distribution channel, the gas outlet is defined as a first gas outlet 2901, a second gas outlet 2902, a third gas outlet 2903 and a fourth gas outlet 2904, respectively. The first gas outlet 2901 is arranged in the first air distribution channel 205, the second gas outlet 2902 is arranged in the second air distribution channel 206, the third gas outlet 2903 is arranged in the third air distribution channel 207, and the fourth gas outlet 2904 is arranged in the fourth air distribution channel 208.

[0211] Optionally, the gas outlet is arranged on the lower disc body 211 in the air distribution channel, and the gas outlets in the same air distribution channel are uniformly arranged in the circumferential direction. The uniformity of the gas outlet is improved. In this 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 flow rate.

[0212] Optionally, in the radial direction, the length of the gas outlet on the outer air distribution channel in the circumferential direction is greater than that of the gas outlet on the inner air distribution channel in the circumferential direction. The air distribution amount of the outer air distribution channel is increased, and the heating efficiency of the outer air distribution channel is improved.

[0213] Optionally, the same side edge of the plurality of gas outlets on the same air distribution channel is provided with a slope structure 298. The flow of the gas into the air distribution channel can be promoted in the same direction, and the stability of the gas outlet is improved.

[0214] 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 through hole and a plurality of gas outlets; the plurality of gas outlets are distributed on different ring lines of the disc-shaped body to form air distribution channels. For example, the upper gas distribution disc 290 shown in Figure 4 and Figure 5 The structure is simple and easy to form.

[0215] 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 as to flush the outer peripheral surface of the gas distribution disc, facilitate sealing connection, and facilitate assembly with other structural members of the burner, etc.

[0216] 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.

[0217] In the present embodiment, as long as the remaining annular gas distribution members can 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 arranged on the upper disc body 291 in the overlapping area for communication, the remaining annular gas distribution members can be arranged.

[0218] In the present embodiment of the disclosure, a relief structure is also arranged at the corresponding position of the lower gas distribution disc 210 and the upper gas distribution disc 290, for arranging 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 arrangement position of the relief structure can be determined according to the positions of the structure members such as the ejector pipe 320, the ignition needle, and the thermocouple arranged on the burner head. A plurality of fixing holes are also arranged, for bolted connection of the upper gas distribution disc 290 and the lower gas distribution disc 210, and the fixing holes include circular holes.

[0219] In the present embodiment of the disclosure, the only difference in the arrangement of the air inlet partition on the lower gas distribution disc 210 in each type of gas distribution disc is that the upper gas distribution disc 290 used is universal, that is, the structure of the upper gas distribution disc 290 as shown in Figure 4 is also applicable to the lower gas distribution disc 210 of other types, to form a plurality of gas distribution discs.

[0220] In combination with Figures 1 to 12 , the present embodiment of the disclosure provides a burner comprising the foregoing gas distribution disc.

[0221] Optionally, the burner further comprises a fire cover, a burner head, and the like.

[0222] Figure 14 is a structural schematic view of a burner provided by the present embodiment of the disclosure. As shown in Figure 14 , the burner generally comprises a fire cover 100 and a gas supply structure arranged below the fire cover 100 and used for supplying gas to the burner. The gas supply structure is used for delivering external gas to the corresponding fire cover 100 in the fire cover 100.

[0223] Generally, the gas supply structure includes one or more of the gas distribution disc 200, the burner head 300, and the gas inlet assembly 400. Among them, the gas inlet assembly 400 is used to introduce external gas into the burner; the burner head 300 is used to realize the mixing and pressurization of the external gas and air; and the gas distribution disc 200 is used to distribute the gas introduced into the burner into the combustion gas path corresponding to the fire cover.

[0224] The existing burner is mostly a two-ring fire or a three-ring fire, that is, the fire cover is provided with two or three circles of fire holes from inside to outside, each circle of fire hole burns as a ring fire, and each ring fire corresponds to an independent gas supply flow path formed by a gas inlet pipe, a ring-shaped mixing chamber 310 of the burner head, and an internal passage of the gas distribution disc 200. This structure design has a single fire form, and often cannot meet the heating needs in different cooking scenes.

[0225] As shown in Figure 19 The fire cover 100 includes a first annular sub-fire cover 101 and a second annular sub-fire cover 102, and the second annular sub-fire cover 102 is sleeved on the outer periphery of the first annular sub-fire cover 101. Optionally, the first annular sub-fire cover 101 is formed with annular combustion chambers that are independently separated from each other and are located at the inner and outer two ring lines. Similarly, the second annular sub-fire cover 102 is also formed with annular combustion chambers that are independently separated from each other and are located at the inner and outer two ring lines. Here, the annular combustion chambers correspond to the positions of the corresponding gas distribution passages, the gas distribution disc 200 enters the corresponding annular combustion chambers after rectifying the gas, the annular combustion chambers in the same annular sub-fire cover do not affect each other, the annular combustion chambers that are connected in the different annular sub-fire covers can burn at the same time, and the fire cover 100 can realize multiple fire forms on the burner.

[0226] Optionally, the fire cover 100 further includes a center fire cover 103, which is arranged in the interior of the first annular sub-fire cover 101 and is arranged concentrically with the first annular sub-fire cover 101 and the second annular sub-fire cover 102; and the gas distribution disc further cooperates with the center fire cover 103 to define a center combustion chamber. The center fire cover 103 is in communication with the center gas inlet passage 233 and the center gas distribution passage 209 of the gas distribution disc, the center ring-shaped mixing chamber 303 of the burner cavity assembly, and the center gas inlet pipe 403 of the gas inlet assembly.

[0227] In order to realize the characteristics of stable gas supply, uniform heating, and diversified fire forms of the burner in the embodiment, the embodiment provides a gas supply structure for a burner. Figure 15 is a structural schematic diagram of a gas supply structure for a burner provided by the embodiment of the disclosure, Figure 16This is a schematic diagram of the connection relationship of the gas distribution plate in this embodiment. As shown in the figure, the gas supply structure includes a gas distribution plate 200 and an air intake assembly 400. The gas distribution plate 200 includes an air intake channel 2001 and a gas distribution channel 2002, at least one air intake channel 2001 connecting to a gas distribution channel 2002 located on a non-adjacent loop; the air intake assembly 400 includes a switching device 420 and an air intake pipe 410 corresponding to the air intake channel 2001; the switching device 420 is used to control the conduction state and / or air intake flow of the air intake pipe 410 to adjust the combustion state of the independent gas path corresponding to each gas distribution channel 2002 on the burner.

[0228] Here, the intake assembly 400 delivers external gas to the intake channel of the gas distributor 200. The gas distributor 200 rectifies the gas and sends it into the connected gas distribution channel, supplying gas to the independent gas path on the burner corresponding to the gas distribution channel.

[0229] The gas supply structure provided in this embodiment connects some or all of the non-adjacent gas distribution channels of the gas distribution plate to the same air intake channel. Simultaneously, a switching device 420 is installed on the air intake pipe 410 corresponding to the air intake channel, allowing at least one air intake pipe 410 to supply gas to multiple non-adjacent gas distribution channels through the air intake channel, thereby adjusting the combustion state of the gas path on the burner corresponding to the gas distribution channel. Thus, when multiple air intake pipes 410 are in different states, a certain degree of balanced gas supply is achieved through multiple gas distribution channels connected to the same conductive air intake pipe 410, enabling uniform heat distribution, effectively improving heating uniformity, reducing operational complexity, and allowing for diverse variations in the flame output of the gas stove.

[0230] Figures 17-19 Schematic diagrams of three gas supply structures for supplying gas to a burner provided in embodiments of this disclosure; combined with Figure 16 , Figures 17-19 As shown in the present embodiment, the air supply structure is mainly divided into three categories according to the connection relationship between the air intake channel 2001 and the air distribution channel 2002.

[0231] The first type of air supply structure provided in this embodiment includes an air distribution plate 200 comprising a first air intake channel 231 and a second air intake channel 232, and a first air distribution channel 205, a second air distribution channel 206, and a third air distribution channel 207 located on different rings from the inside out; the first air intake channel 231 is connected to the first air distribution channel 205 and the third air distribution channel 207 respectively; the second air intake channel 232 is connected to the second air distribution channel 206; the air intake assembly 400 includes a first air intake pipe 401 and a second air intake pipe 402 respectively corresponding to the first air intake channel 231 and the second air intake channel 232.

[0232] 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 first gas distribution channel 205 and the third gas distribution channel 207 which are not adjacent by setting the gas distribution disc 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 rings of fire with a certain spacing and synchronous firepower, which can effectively expand the heating area and improve the uniformity of heating compared with single-ring fire.

[0233] Here, the switching device can be a mechanical valve structure arranged on the gas inlet pipe 410, or an electronic valve structure which 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.

[0234] 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 on the burner corresponding to the first gas distribution channel and the third gas distribution channel; 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 on the burner corresponding to the second gas distribution channel.

[0235] Here, two control valves are used to adjust the conduction state and / or gas flow of the first gas inlet pipe 401 and the second gas inlet pipe 402, respectively. For example, when the first control valve 404 is in a first state, the first gas inlet pipe 401 is closed, the first gas inlet channel 231 has no gas, and the first gas distribution channel 205 and the third gas distribution channel 207 do not supply gas to the burner; when the first control valve 404 is in a second state, the first gas inlet pipe 401 is open, and external gas is introduced into the first gas inlet channel 231, then the first gas distribution channel 205 and the third gas distribution channel 207 which are in communication with the first gas inlet channel 231 simultaneously supply gas to the burner, and the gas paths on the burner corresponding to the first gas distribution channel 205 and the third gas distribution channel 207, respectively, burn to supply heat. Optionally, the first control valve 404 can also be set to have multiple gears between the first state and the second state to adjust the gas flow of the first gas inlet pipe 401. The gas flow can also be adjusted by separately arranging a gas regulating valve on the gas inlet pipe 410.

[0236] 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 branch 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, the second branch passage 206 in communication therewith supplies gas to the burner, and the gas path corresponding to the second branch passage 206 on the burner burns to supply heat. Alternatively, the second control valve 405 can also be provided with multiple gears between the first state and the second state to adjust the intake flow of the second intake pipe 402.

[0237] Thus, 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 branch passage 205, the second branch passage 206, and the third branch passage 207 to achieve diversified combustion states 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 branch passage 205, the second branch passage 206, and the third branch passage 207 all supply gas to the burner, the three-ring gas path corresponding to the above-mentioned branch passages arranged along the ring line from the inside to the outside on the burner burns to supply heat at the same time, providing a three-ring gas supply mode of the burner with large fire power, large heating area, and good uniformity.

[0238] 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 branch passage 205 and the third branch passage 207 in communication with the first intake passage 231 supply gas to the burner at the same time, the second branch passage 206 in communication with the second intake passage 232 does not supply gas to the burner, the two-ring gas path corresponding to the first branch passage 205 and the third branch passage 207 on the burner burns to supply heat at the same time, the gas path corresponding to the second branch passage 206 arranged between the two-ring gas path stops burning, and the gas supply structure provides a double-ring gas supply mode of the burner with uniform and synchronous inner and outer rings. Since the first branch passage 205 and the third branch passage 207 have a certain distance, the heating of the double-ring gas supply mode is more uniform.

[0239] 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 branch passage 206 supplies gas to the burner, the middle-ring gas path corresponding to the second branch passage 206 on the combustion chamber burns to supply heat, and the gas supply structure provides a middle-ring gas supply mode of the burner. Since the second branch passage 206 is located between the first branch passage 205 and the third branch passage 207, the heating area of the middle-ring gas supply mode is larger and the uniformity is better than that of the single inner ring or single outer ring gas supply mode.

[0240] The second type of gas supply structure provided by the embodiments of the present disclosure further includes a fourth gas distribution channel 208 arranged on the peripheral ring line of the third gas distribution channel 207 on the basis of the first type of gas supply structure; and the second gas inlet channel 232 further communicates with the fourth gas distribution channel 208.

[0241] The second type of gas supply structure 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, and the communication of the second gas inlet channel 232 with the non-adjacent second gas distribution channel 206 and fourth gas distribution channel 208 by arranging the gas distribution disc as a four-ring gas distribution channel structure. In this way, when the gas flow rate and / or conduction state of the first gas inlet pipe 401 corresponding to the first gas inlet channel 231 are adjusted, the first gas distribution channel 205 and the third gas distribution channel 207 can be synchronously adjusted; and when the gas flow rate and / or conduction state of the second gas inlet pipe 402 corresponding to the second gas inlet channel 232 are adjusted, the second gas distribution channel 206 and the fourth gas distribution channel 208 can be synchronously adjusted. In this way, three types of gas supply modes can be provided for the burner, and compared with single-ring adjustment, the heating area can be effectively expanded and the uniformity of heating can be improved.

[0242] Optionally, in the second 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 has the same function as that in the first type of gas supply structure, and can simultaneously adjust the combustion states of the independent gas paths on the burner corresponding to the first gas distribution channel 205 and the third gas distribution channel 207. The second control valve 405 adjusts the conduction state and / or gas flow rate of the second gas inlet pipe 402 in the second type of gas supply structure, so as to simultaneously adjust the combustion states of the independent gas paths on the burner corresponding to the second gas distribution channel 206 and the fourth gas distribution channel 208.

[0243] Here, when the second control valve 405 is in the first state, the second gas inlet pipe 402 is closed, the second gas inlet channel 232 has no gas, and the second gas distribution channel 206 and the fourth gas distribution channel 208 do not supply gas to the burner; when the second control valve 405 is in the second state, the second gas inlet pipe 402 is turned on to introduce external gas into the second gas inlet channel 232, and the second gas distribution channel 206 and the fourth gas distribution channel 208 connected thereto simultaneously supply gas to the burner, and the gas paths on the burner corresponding to the second gas distribution channel 206 and the fourth gas distribution channel 208 respectively burn and supply heat. Optionally, the second control valve 405 can also be provided with multiple gears between the first state and the second state to adjust the gas flow rate of the second gas inlet pipe 402. The gas flow rate can also be adjusted by separately arranging a gas regulating valve on the gas inlet pipe 410.

[0244] Thus, in the second type of gas supply structure, through the first control valve 404 and the second control valve 405, the adjustment of the gas supply state of the first gas passage 205, the second gas passage 206, the third gas passage 207 and the fourth gas passage 208 can be realized to achieve the diversified combustion state of the burner. For example, when the first control valve 404 and the second control valve 405 control the first gas inlet pipe 401 and the second gas inlet pipe 402 to be conducted, respectively, the four-ring gas passages supply gas to the burner at the same time, and the four-ring gas passages correspond to the four-ring gas paths on the burner. The four-ring gas passages are simultaneously combusted and heated to provide a four-ring gas supply mode for the burner, which has a large heating area and good uniformity.

[0245] When the first control valve 404 or the second control valve 405 controls the corresponding gas inlet pipe 410 to be conducted alone, and the other gas inlet pipe 410 is closed, the interval double-ring gas passages supply gas to the burner at the same time, and the two-ring gas paths on the burner corresponding to the gas supply are simultaneously combusted and heated. The gas supply structure provides two uniform and synchronous double-ring gas supply modes for the burner. Since the first gas passage 205 and the third gas passage 207, or the second gas passage 206 and the fourth gas passage 208, have a certain distance, the heating of the double-ring gas supply mode is more uniform. Since the heating area of the second gas passage 206 corresponding to the gas path on the burner is larger than that of the first gas passage 205, and the heating area of the fourth gas passage 208 corresponding to the gas path on the burner is larger than that of the third gas passage, the heating effect when the second control valve 405 controls the second gas inlet pipe 402 to be conducted alone is better than that when the first control valve 404 controls the first gas inlet pipe 401 to be conducted alone, and more heat is provided.

[0246] The third type of gas supply structure provided by the embodiments of the present disclosure further includes a center gas passage 209 on the inner ring line of the first gas passage 205 on the basis of the second type of gas supply structure, and the gas distribution disc further includes a center gas passage 209; the gas inlet assembly 400 further includes a center gas inlet pipe 403 corresponding to the center gas inlet passage 233.

[0247] The third type of gas supply structure, by adding the center gas passage 209, sets the gas distribution disc as a five-ring gas passage structure, realizes the communication between the center gas inlet passage 233 and the center gas passage 209, the first gas inlet passage 231 and the non-adjacent first gas passage 205 and third gas passage 207, and the second gas inlet passage 232 and the non-adjacent second gas passage 206 and fourth gas passage 208, to provide a five-ring gas supply mode for the burner. Thus, the gas distribution area is expanded, the gas distribution area on the burner is expanded, the diversity of the fire mode is increased through the multi-ring gas supply mode, the flexibility of the heating area is increased, and various cooking demands can be met.

[0248] Optionally, as shown in FIG. 4, in the third type of gas supply structure, the switching device further comprises a center control valve 406 for controlling the on-off state and / or the gas flow of the center gas inlet pipe 403 to adjust the combustion state of the corresponding independent gas path of the center gas distribution passage 209 on the burner. Figure 17

[0249] Here, when the center control valve 406 is in the first state, the center gas inlet pipe 403 is closed, the center gas inlet passage 233 has no gas, and the center gas distribution passage 209 does not supply gas to the burner; when the center control valve 406 is in the second state, the center gas inlet pipe 403 is open, external gas is introduced into the center gas inlet passage 233, and the center gas distribution passage 209 in communication therewith supplies gas to the burner, and the corresponding gas path of the burner burns to supply heat. Optionally, the center control valve 406 can also be provided with multiple gears between the first state and the second state to adjust the gas flow of the center gas inlet pipe 403. The gas flow can also be adjusted by separately providing a gas regulating valve on the gas inlet pipe 410.

[0250] In this way, the center control valve 406, the first control valve 404, and the second control valve 405 are used to control the on-off state and / or the gas flow of the center gas inlet pipe 403, the first gas inlet pipe 401, and the second gas inlet pipe 402, respectively, to adjust the on-off state of the gas distribution passage corresponding to the gas inlet pipe 410.

[0251] Optionally, as shown in FIG. 4, in the third type of gas supply structure, the switching device further comprises a center control valve 406 for controlling the on-off state and / or the gas flow of the center gas inlet pipe 403 to adjust the combustion state of the corresponding independent gas path of the center gas distribution passage 209 on the burner. Figure 18

[0252] Here, the second control valve 405, when used to adjust the on-off state and / or the gas flow of the center gas inlet pipe 403 and the second gas inlet pipe 402, the combustion state of the corresponding independent gas path of the burner includes at least:

[0253] ​​When the second control valve 405 is in the first state, the center intake pipe 403 is open, and the second intake pipe 402 is closed. The center intake pipe 403 introduces external gas into the center intake passage 233, and the center gas passage 209 in communication therewith supplies gas to the burner, and the corresponding independent gas path of the burner is burned; the second intake passage 232 has no intake, and the second gas passage 206 and the fourth gas passage 208 in communication therewith do not supply gas to the burner. In this state, in combination with the state of the first control valve 404, the gas supply structure can realize a central ring supply mode of the burner only (the first control valve 404 is in the first state, and the first gas passage 205 and the third gas passage 207 do not supply gas to the burner), or a small three-ring gas supply mode (the first control valve 404 is in the second state, and the first gas passage 205 and the third gas passage 207 simultaneously supply gas to the burner).

[0254] When the second control valve 405 is in the second state, the center intake pipe 403 and the second intake pipe 402 are both open, introducing external gas into the center intake passage 233, the second gas passage 206 and the fourth gas passage 208; at this time, the center gas passage 209, the second gas passage 206 and the fourth gas passage 208 simultaneously burn in the corresponding independent gas path of the burner. In this state, in combination with the state of the first control valve 404, the gas supply structure can realize a large three-ring gas supply mode of the burner (the first control valve 404 is in the first state, and the first gas passage 205 and the third gas passage 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 gas passage 205 and the third gas passage 207 simultaneously supply gas to the burner). In the large three-ring gas supply mode in this state, compared with the small three-ring gas supply mode, the burning area of the opened gas path on the burner is larger, the heating area is wider, and the heating effect is better.

[0255] When the second control valve 405 is in the third state, the center intake pipe 403 is closed, and the center intake passage 233 corresponding thereto is not supplied with gas; the second intake pipe 402 is open, and the second gas passage 206 and the fourth gas passage 208 in communication therewith simultaneously supply gas to the burner. At this time, the center gas passage 209 stops burning in the corresponding independent gas path of the burner, and the second gas passage 206 and the fourth gas passage 208 simultaneously burn in the corresponding independent gas path of the burner. In this state, in combination with the state of the first control valve 404, the gas supply structure can realize a large double-ring gas supply mode of the burner (the first control valve 404 is in the first state, and the first gas passage 205 and the third gas passage 207 do not supply gas to the burner), or a four-ring gas supply mode (the first control valve 404 is in the second state, and the first gas passage 205 and the third gas passage 207 simultaneously supply gas to the burner).

[0256] When the second control valve 405 is in the closed state, the central gas inlet pipe 403 and the second gas inlet pipe 402 are closed at the same time, and the corresponding central gas inlet passage 233 and the second gas inlet passage 232 do not supply gas to the burner. At this time, when the first control valve 404 is in the second state, the burner presents a small double-ring gas supply mode. In the small three-ring gas supply mode in this state, compared with the large three-ring gas supply mode, a stable and uniform heating effect of small firepower can be realized.

[0257] In this way, by switching the device, the gas supply structure of the burner can be adjusted to change the gas supply state of the corresponding gas path on the burner, and by changing the gas inlet of the gas supply passage, a plurality of gas supply modes can be realized, so that the burner has a plurality of fire forms and can adapt to different cooking needs.

[0258] Further, in order to realize the characteristics of stable gas supply, uniform heating and diversified fire forms of the burner in the embodiment, a gas supply structure for a burner is also provided, Figure 19 A structural diagram of the gas supply structure is shown, which includes a gas inlet assembly 400, a burner head 300 and a gas distribution disc 200. The burner head is arranged between the gas inlet assembly 400 and the gas distribution disc, and is used to uniformly distribute and pressurize the external gas introduced by the gas inlet pipe 410, and then input the gas into the gas inlet passage of the gas distribution disc. The gas distribution disc 200 is arranged on the burner head 300 to distribute the gas introduced into the burner to the combustion gas path corresponding to the fire cover.

[0259] Optionally, the burner head 300 includes a plurality of annular mixing chambers 310 arranged concentrically; the gas inlet end of each annular mixing chamber 310 is in communication with the gas inlet pipe 410; the gas inlet end of the gas inlet passage 2001 is in communication with the corresponding mixing chamber 310; wherein the gas inlet ends of adjacent gas inlet passages 2001 are arranged on different ring lines at the bottom of the gas distribution disc 200, and are arranged in a staggered manner corresponding to the corresponding annular mixing chamber 310.

[0260] Here, the external gas enters the corresponding mixing chamber 310 in the burner head 300 through different gas inlet pipes 410, is uniformly mixed in the annular mixing chamber, and then enters the connected gas distribution passage 2002 after the gas is rectified by the gas inlet passage 2001 of the gas distribution disc 200, to supply gas to the independent gas path on the burner corresponding to the gas distribution passage 2002.

[0261] The gas supply structure for the burner provided by the embodiment is used in cooperation of the burner head 300 and the gas distribution disc 200. The gas inlet end of the gas inlet channel 2001 is arranged in a staggered manner, so that the gas in the annular gas mixing cavity 310 can enter the corresponding gas inlet channel 2001 and be distributed to the gas distribution channels 2002 on different annular lines. The gas in the same annular gas mixing cavity 310 can be supplied to the gas distribution channels 2002 on non-adjacent annular lines. The gas distribution area is expanded, the gas distribution area is expanded, the diversity of the fire mode is increased, the flexibility of the heating area is increased, the cooking requirements can be met, and the heating uniformity is effectively improved and the operation complexity is reduced.

[0262] Optionally, the number of annular gas mixing cavities 310 corresponds to the number of gas inlet channels 2001. The gas inlet channels 2001 that communicate with the same gas distribution channel 2002 have gas inlet ends that communicate with the same annular gas mixing cavity 310.

[0263] Optionally, as shown in Figure 20 corresponding to the gas inlet channel 2001 in the above embodiment, the annular gas mixing cavity 310 includes a central annular gas mixing cavity 303, a first annular gas mixing cavity 301, and a second annular gas mixing cavity 302, which are sequentially arranged from inside to outside, or the number of annular gas mixing cavities is arranged according to the number of gas inlet channels. In this embodiment, the first annular gas mixing cavity 301 communicates with the first gas inlet channel 231, the second annular gas mixing cavity 302 communicates with the second gas inlet channel 232, and the central annular gas mixing cavity 303 communicates with the central gas inlet channel 233. Thus, the corresponding communication between the burner head 300 and the gas distribution disc 200 is achieved.

[0264] On the other hand, the number of annular gas mixing cavities 310 corresponds to the number of gas inlet channels 410. The gas inlet channels 410 that supply gas to the same gas distribution channel 2002 have gas inlet ends that communicate with the same annular gas mixing cavity 310.

[0265] Optionally, corresponding to the gas inlet channel 410 in the above embodiment, the first annular gas mixing cavity 301 of the annular gas mixing cavity communicates with the first gas inlet channel 401, the second annular gas mixing cavity 302 communicates with the second gas inlet channel 402, and the central annular gas mixing cavity 303 communicates with the central gas inlet channel 403. Thus, the corresponding communication between the burner head 300 and the gas distribution disc 200 is achieved.

[0266] In the embodiment of the present disclosure, according to the structure of the gas distribution disc, the burner includes the first type of gas distribution disc, the second type of gas distribution disc, or the third type of gas distribution disc, and correspondingly, the first type of burner, the second type of burner, or the third type of burner is obtained.

[0267] The burner of the embodiment of the present disclosure can provide a flexible and variable heating area, and the heating area is large, which is suitable for various cooking requirements.

[0268] The present disclosure provides a gas stove comprising the aforementioned burner.

[0269] In some embodiments, the gas stove comprises one or more of the aforementioned burners. When the gas stove comprises a plurality of the aforementioned burners, the burners employed can be different.

[0270] Optionally, the gas stove comprises one or any two or three of the first type of burner, the second type of burner and the third type of burner.

[0271] The above description and drawings suffice to fully enable one skilled in the art to practice the embodiments of the present disclosure. Other embodiments can include structural and other changes. The embodiments are merely representative of the possible variations. Individual components and functions are optional unless explicitly required, and the order of operations can be varied. Portions and features of some embodiments can be included in, or substituted for, portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the drawings, and can be varied in a variety of ways without departing from their scope. The scope of the present disclosure is limited only by the claims appended hereto.

Claims

1. A gas distribution plate, characterized by, The application relates to a gas distribution disc for a gas burner, comprising: an air inlet part comprising a plurality of air inlet channels each extending from the inside to the outside; a gas distribution part comprising a plurality of gas distribution channels located at different ring lines from the inside to the outside, and some or all of the gas distribution channels at non-adjacent ring lines are in communication with the same air inlet channel; wherein the air inlet channel comprises a radial extension extending from the inside to the outside, some or all of the gas distribution channels are in communication with the radial extension, and the air inlet channel further comprises a circumferential extension which is formed in a circumferential line and is in communication with the outer end of the radial extension; and some of the gas distribution channels are in communication with the circumferential extension.

2. The gas distribution plate of claim 1, wherein, The radial extension has a channel structure which gradually expands from the inside to the outside and gradually increases in cross-sectional area.

3. The gas distribution plate of claim 2, wherein, The channel center line of the radial extension is an arc or a straight line.

4. The gas distribution plate of claim 1, wherein, The air inlet end of the radial extension is configured as an arc-shaped concave structure which can smoothly transition with the annular gas mixing cavity.

5. The gas distribution plate of claim 1, wherein, A plurality of the air inlet channels are uniformly arranged at equal arc intervals in the circumferential direction.

6. The gas distribution plate of claim 1, wherein, Some adjacent circumferential extensions located at the same circumferential line are in communication with each other.

7. The gas distribution plate of claim 1, wherein, The gas distribution disc has a disc-shaped shell, and the air inlet part and the gas distribution part are formed in the shell. The gas distribution channels are formed in the top surface of the shell and are in position correspondence with the circumferential extensions.

8. A burner characterized by, The application further relates to a gas burner comprising a gas cap, a burner head and the gas distribution disc as claimed in any one of claims 1 to 7.

9. A gas hob, characterized in that The application further relates to a gas burner as claimed in claim 8. The application further relates to a gas burner as claimed in claim 8.

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