Combustor and stove

Abstract

The invention discloses a combustor and a stove. The burner includes: a base; the air distribution disc is arranged on the base and comprises an outer ring part and an inner ring part; the outer ring fire cover is arranged on the outer ring part, an outer ring gas mixing cavity is defined by the outer ring fire cover and the outer ring part, the outer ring fire cover is provided with a plurality of middle ring fire holes, the multiple middle ring fire holes are formed in the circumferential direction of the combustor at intervals, and the middle ring fire holes communicate with the outer ring gas mixing cavity; a plurality of flame stabilizing grooves communicating with the outer ring gas mixing cavity are formed in the surface, facing the central axis of the combustor, of the outer ring part, the flame stabilizing grooves are formed in the circumferential direction of the combustor at intervals, and the flame stabilizing grooves correspond to the middle ring fire holes in the direction parallel to the central axis of the combustor. According to the combustor, the flame stabilizing effect of middle ring fire can be improved, the combustion performance is improved, and the smoke concentration during combustion of the combustor is reduced.

Description

Technical Field

[0001] This invention relates to the field of stove technology, and in particular to a burner and stove. Background Technology

[0002] In related technologies, burners can form a three-ring flame during combustion. However, if the combustion of the middle ring flame hole is unstable, it will result in high flue gas concentration and low performance of the burner, failing to meet requirements. Summary of the Invention

[0003] The present invention provides a burner and a stove to solve at least one of the above-mentioned technical problems.

[0004] A burner according to an embodiment of the present invention includes:

[0005] Base;

[0006] The air distribution plate is disposed on the base, and the air distribution plate includes an outer ring portion and;

[0007] An outer ring burner cap is disposed on the outer ring portion, and the outer ring burner cap and the outer ring portion form an outer ring mixing chamber. The outer ring burner cap has a plurality of middle ring burner holes, which are spaced apart along the circumferential direction of the burner and communicate with the outer ring mixing chamber. The outer ring portion has a plurality of flame stabilizing grooves on its surface facing the central axis of the burner, which communicate with the outer ring mixing chamber. The plurality of flame stabilizing grooves are spaced apart along the circumferential direction of the burner and are arranged in a direction parallel to the central axis of the burner. The flame stabilizing grooves are corresponding to the middle ring burner holes.

[0008] In the aforementioned burner, multiple flame stabilizing grooves are provided on the outer ring surface facing the central axis of the burner. Along the direction parallel to the central axis of the burner, the flame stabilizing grooves are correspondingly arranged with the central ring flame holes. Thus, when the burner is working, the flame in the flame stabilizing grooves can stabilize the flame in the central ring flame holes, thereby improving the flame stabilization effect, enhancing combustion performance, and reducing the flue gas concentration during burner combustion.

[0009] In some embodiments, the outer ring flame cap includes a top surface and an inclined surface, the inclined surface connecting the edge of the top surface near the central axis of the burner, the inclined surface sloping from the top surface toward the base, and the middle ring flame hole penetrating the inclined surface.

[0010] In some embodiments, the inclination angle of the inclined plane is in the range of [10°, 30°].

[0011] In some embodiments, the middle ring flame hole is inclined from the outer ring portion toward the central axis of the burner, and the angle between the axis of the middle ring flame hole and the central axis of the burner is in the range of [40°, 60°].

[0012] In some embodiments, along a direction parallel to the central axis of the burner, corresponding to each flame stabilizing groove, a plurality of central ring flame holes are spaced apart along a direction away from the central axis of the burner.

[0013] In some embodiments, the gas distribution plate includes a middle section and a plurality of connecting sections. The plurality of connecting sections are spaced apart along the circumferential direction of the burner and connect the outer ring section and the middle section. Two adjacent connecting sections, the outer ring section and the middle section together form a secondary air channel. The flame stabilizing groove is located on the surface of the outer ring section facing the secondary air channel.

[0014] In some embodiments, the outer ring portion includes a first side plate, a bottom plate, and a second side plate. The bottom plate connects the first side plate and the second side plate and together form a first chamber. The outer ring flame cap has a second chamber. The first chamber and the second chamber together constitute the outer ring mixing chamber. The first side plate is closer to the middle portion than the second side plate. The surface of the first side plate facing the first chamber has a first step portion. The surface of the outer ring flame cap away from the second chamber has a second step portion. The first step portion and the second step portion are connected in a cooperative manner.

[0015] In some embodiments, the intermediate portion is provided with an inner annular mixing chamber and an inner annular flame hole, the inner annular flame hole being connected to the inner annular mixing chamber.

[0016] In some embodiments, the outer ring burner cap has an outer ring flame hole on its circumferential side away from the central axis of the burner. The outer ring flame hole is connected to the outer ring mixing chamber. A flow guiding space is provided at the connection between the circumferential side of the outer ring burner cap away from the central axis of the burner and the top surface. The flow guiding space is configured to guide the secondary air above the outer ring burner cap to the circumferential side of the outer ring burner cap away from the central axis of the burner.

[0017] One embodiment of the present invention includes a burner according to any of the above embodiments.

[0018] In the aforementioned stove, multiple flame-stabilizing grooves are provided on the outer ring surface facing the central axis of the burner. Along the direction parallel to the central axis of the burner, the flame-stabilizing grooves are correspondingly arranged with the central ring flame holes. Thus, when the burner is working, the flame of the flame-stabilizing grooves can stabilize the flame of the central ring flame holes, thereby improving the flame stabilization effect, enhancing combustion performance, and reducing the concentration of flue gas during burner combustion.

[0019] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is one of the perspective schematic diagrams of a burner according to an embodiment of the present invention;

[0022] Figure 2 This is one of the exploded view diagrams of the burner according to an embodiment of the present invention;

[0023] Figure 3 This is a second perspective view of the burner according to an embodiment of the present invention;

[0024] Figure 4 This is a cross-sectional schematic diagram of the burner according to an embodiment of the present invention;

[0025] Figure 5 This is a second exploded view of the burner according to an embodiment of the present invention;

[0026] Figure 6 This is a top view of the burner according to an embodiment of the present invention;

[0027] Figure 7 for Figure 6 A cross-sectional view of the burner along line AA.

[0028] Explanation of key component reference numerals:

[0029] Burner 300, base 202, gas distribution plate 204, outer ring burner cap 206, outer ring part 208, outer ring mixing chamber 210, middle ring burner hole 212, flame stabilizer groove 214, primary air passage 216, bottom mixing chamber 218, nozzle seat 220, connector 222, middle part 224, connecting part 226, inner ring mixing chamber 228, inner ring burner hole 230, ejector passage 232, outer ring burner hole 234, first side plate 236, bottom plate 238, second side plate 240, first chamber 242, second chamber 244, top surface 246, inclined surface 248, secondary air passage 250, first step part 252, second step part 254, third step part 256, flow guide space 258, ignition needle 260, thermocouple 262. Detailed Implementation

[0030] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] The following disclosure provides many different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0035] Please refer to Figures 1 to 4 An embodiment of the present invention provides a burner 300 including a base 202, a gas distribution plate 204, and an outer ring burner cap 206. The gas distribution plate 204 is disposed on the base 202 and includes an outer ring portion 208. An outer ring burner cap 206 is disposed on an outer ring portion 208. The outer ring burner cap 206 and the outer ring portion 208 form an outer ring mixing chamber 210. The outer ring burner cap 206 is provided with a plurality of middle ring burner holes 212. The plurality of middle ring burner holes 212 are spaced apart along the circumferential direction P of the burner 300. The middle ring burner holes 212 communicate with the outer ring mixing chamber 210. The outer ring portion 208 is provided with a plurality of flame stabilizing grooves 214 communicating with the outer ring mixing chamber 210 on the surface facing the central axis L of the burner 300. The plurality of flame stabilizing grooves 214 are spaced apart along the circumferential direction P of the burner 300. Along the direction parallel to the central axis L of the burner 300, the flame stabilizing grooves 214 are correspondingly arranged with the middle ring burner holes 212.

[0036] In the aforementioned burner 300, the outer ring portion 208 has a plurality of flame stabilizing grooves 214 on its surface facing the central axis L of the burner 300. Along the direction parallel to the central axis L of the burner 300, the flame stabilizing grooves 214 are correspondingly arranged with the central ring flame holes 212. Thus, when the burner 300 is working, the flame of the flame stabilizing grooves 214 can stabilize the flame of the central ring flame holes 212, thereby improving the flame stabilization effect, improving combustion performance, and reducing the flue gas concentration during combustion of the burner 300.

[0037] Specifically, in the embodiment shown in the figure, the burner 300 can be an upper-intake burner. When an upper-intake burner is used in a cooktop, the primary air intake of the burner 300 can be located above the cooktop panel. The base 202 can serve as a base cup. In one embodiment, the burner 300 can be a lower-intake burner. When a lower-intake burner is used in a cooktop, the primary air intake of the burner 300 can be located below the cooktop panel. The base 202 may include an ejector tube.

[0038] A primary air passage 216 can be formed between the base 202 and the outer ring 208. The base 202 has a bottom mixing chamber 218, which is connected by the primary air passage 216. A nozzle seat 220 is provided inside the bottom mixing chamber 218 for mounting a nozzle. A connector 222 is provided on the outer surface of the base 202 for connecting a gas pipeline. The nozzle can inject gas into the bottom mixing chamber 218, where it mixes with the air to form a gas mixture, which can then enter the gas distributor 204. After the gas is ejected from the nozzle, a negative pressure is created in the bottom mixing chamber 218. This negative pressure draws in primary air through the primary air inlet, which then enters the bottom mixing chamber 218 via the primary air passage 216, thus replenishing the gas mixture with primary air.

[0039] The burner 300 in this embodiment of the invention is a three-ring burner. The mixed gas in the outer ring mixing chamber 210 can be ejected through the middle ring flame hole 212 and ignited to form a middle ring flame.

[0040] The gas distributor 204 can distribute the mixed gas. Specifically, the gas distributor 204 may include a middle portion 224, a connecting portion 226, and an outer ring portion 208. The connecting portion 226 connects the middle portion 224 and the outer ring portion 208. The middle portion 224 forms an inner ring mixing chamber 228 and an inner ring ignition hole 230. The inner ring mixing chamber 228 is connected to the bottom mixing chamber 218 and the inner ring ignition hole 230 through an ejector channel 232 at the bottom of the gas distributor 204. The mixed gas enters the inner ring mixing chamber 228 from the bottom mixing chamber 218 through the ejector channel 232. A portion of the mixed gas is ejected through the inner ring ignition hole 230 and ignited to form an inner ring flame. The connecting portion 226 is provided with a connecting channel that connects the inner ring mixing chamber 228 and the outer ring mixing chamber 210. Another portion of the mixed gas can enter the outer ring mixing chamber 210 from the inner ring mixing chamber 228 through the connecting channel.

[0041] The outer ring flame cap 206 is located on the outer ring portion 208. The mixed gas in the outer ring mixing chamber 210 can be ejected through the outer ring flame hole 234 of the outer ring flame cap 206, and after ignition, form an outer ring flame.

[0042] Along the direction parallel to the central axis L of the burner 300, the flame stabilizing groove 214 is correspondingly arranged with the central ring flame hole 212. Figure 1 In the burner 300, the direction parallel to the central axis L is the vertical direction. Along this vertical direction, the flame stabilizing groove 214 is located below the middle ring flame hole 212. Both the flame stabilizing groove 214 and the middle ring flame hole 212 are connected to the outer ring mixing chamber 210.

[0043] The mixed gas in the outer ring mixing chamber 210 can be ejected from the flame stabilizing groove 214 and ignited to form a stable flame. The stable flame can stabilize the root of the middle ring flame, and to a certain extent avoid the phenomenon of flame lift-off and extinction during the combustion of the middle ring flame hole 212, thereby improving the flame stabilization effect of the middle ring flame hole 212, improving combustion performance, reducing yellow flame, meeting relevant requirements, and achieving the purpose of cost reduction and efficiency improvement, thus improving economic benefits.

[0044] Alternatively, in one implementation, please combine Figure 5 and Figure 7 The outer ring portion 208 includes a first side plate 236, a bottom plate 238, and a second side plate 240. The bottom plate 238 connects the first side plate 236 and the second side plate 240, together forming a first chamber 242. The outer ring flame cap 206 has a second chamber 244. The first chamber 242 and the second chamber 244 together form an outer ring mixing chamber 210. The first side plate 236 is closer to the middle portion 224 than the second side plate 240. The first side plate 236 has multiple flame stabilizing grooves 214. The outer ring flame cap 206 is located in the outer ring portion 208 and covers the top opening of the notch.

[0045] In this embodiment of the invention, multiple flame stabilizing grooves 214 are arranged at intervals along the circumference of the burner 300. Therefore, the position of the flame stabilizing grooves 214 can be set or adjusted according to the position of the central ring flame hole 212, so that the flame stabilizing grooves 214 are correspondingly arranged with respect to the central ring flame hole 212 along the direction parallel to the central axis L of the burner 300, thereby more effectively stabilizing the central ring flame and improving the flame stabilization effect. Furthermore, when machining the flame stabilizing grooves 214, only a notch needs to be directly machined (e.g., machined) at the corresponding position on the first side plate 236, resulting in high manufacturing efficiency for the burner 300.

[0046] In some embodiments, the outer ring burner cap 206 includes a top surface 246 and an inclined surface 248. The inclined surface 248 connects the edge of the top surface 246 near the central axis L of the burner 300. The inclined surface 248 slopes from the top surface 246 toward the base 202. The middle ring burner hole 212 passes through the inclined surface 248.

[0047] This allows for more stable combustion in the central ring flame hole 212.

[0048] Specifically, the cooktop may include a pot holder that can be placed on a control panel. When the burner 300 is used in the cooktop, the pot holder is positioned around the burner 300. The pot holder allows the cookware to be stably placed above the burner 300.

[0049] Please combine Figure 7In the burner 300, the top surface 246 is horizontal, and the inclined surface 248 slopes downward from the top surface 246, facing the central axis L of the burner 300. The central ring burner hole 212 penetrates the inclined surface 248, maintaining a certain distance between the air outlet of the central ring burner hole 212 and the cookware above. This helps to prevent insufficient secondary air supply to the central ring burner hole 212 due to the close proximity of the cookware and the central ring burner hole 212, thus making the combustion of the central ring burner hole 212 more stable and improving the energy efficiency of the burner 300.

[0050] In some implementations, please refer to Figure 7 The inclination angle T of the inclined plane 248 ranges from [10°, 30°].

[0051] Therefore, the heating efficiency of the central ring fire can be guaranteed to a certain extent.

[0052] Specifically, the inclination angle T of the inclined plane 248 is in the range of [10°, 30°], that is, 10°≤T≤30°. This can make the combustion of the central ring burner 212 more stable, and to a certain extent avoid the problem of low heating efficiency of the central ring burner caused by the air outlet of the central ring burner 212 being too far away from the upper pot.

[0053] In some examples, T = 10°, 12°, 15°, 20°, 25°, 28°, 30° or other values ​​in the range [10°, 30°].

[0054] In some implementations, please refer to Figure 7 The middle ring flame hole 212 is inclined from the outer ring 208 toward the central axis L of the burner 300, and the angle Q between the axis of the middle ring flame hole 212 and the central axis L of the burner 300 is in the range of [40°, 60°].

[0055] This allows for a larger heating area in the central ring fire.

[0056] Specifically, the central ring flame hole 212 is inclined from the outer ring part 208 toward the central axis L of the burner 300, so that the gas outlet of the central ring flame hole 212 sprays mixed gas toward the central axis L of the burner 300. The resulting central ring flame heats the bottom of the pot at an angle. The heating area formed by the central ring flame is larger, which is conducive to the pot being heated evenly.

[0057] Furthermore, when the burner 300 simultaneously forms a triple-ring flame, the heating area formed by the triple-ring flame is larger, the entire pot is heated more evenly, and the burner 300 has high performance.

[0058] The angle Q between the axis of the central ring burner 212 and the central axis L of the burner 300 is in the range of [40°, 60°], that is, 40°≤Q≤60°. This can ensure the heating area of ​​the central ring burner to a certain extent while avoiding the problem of low heating efficiency caused by the central ring burner 212 being too far away from the pot.

[0059] In some examples, Q = 40°, 42°, 45°, 48°, 50°, 55°, 58°, 60° or other values ​​in the range [40°, 60°].

[0060] In some embodiments, along the direction parallel to the central axis L of the burner 300, a plurality of central ring flame holes 212 are spaced apart along the direction away from the central axis L of the burner 300, corresponding to each flame stabilizer groove 214.

[0061] This allows for an increase in the heating area of ​​the central ring fire.

[0062] Specifically, in Figure 1 In the middle, along the vertical direction, corresponding to each flame stabilizer groove 214, two central ring flame holes 212 are spaced apart along the direction away from the central axis L of the burner 300. Along the circumferential direction P of the burner 300, the burner 300 can form two rings of central ring flame holes 212, which can form two rings of central ring flame during combustion, thereby increasing the heating area of ​​the central ring flame.

[0063] Alternatively, in other embodiments, the number of central ring flame holes 212 corresponding to each flame stabilizer 214 is not limited to two, but can be one or more.

[0064] exist Figure 4 In the burner 300, the central ring flame hole 212 penetrates the inclined surface 248 and is positioned along the direction parallel to the central axis L of the burner 300. Corresponding to each flame stabilizing groove 214, two central ring flame holes 212 are spaced apart along the direction away from the central axis L of the burner 300, with one central ring flame hole 212 located below the other. When the burner 300 is operating, the stable flame formed by combustion in the flame stabilizing groove 214 can stabilize the flame of the lowest central ring flame hole 212, and the flame of the lower central ring flame hole 212 can stabilize the flame of the upper central ring flame hole 212. This ensures that all central ring flame holes 212 corresponding to each flame stabilizing groove 214 along the direction parallel to the central axis L of the burner 300 can form a stable central ring flame. This increases the heating area of ​​the central ring flame while ensuring the stability of the central ring flame formed by each central ring flame hole 212, further enhancing the flame stabilization effect.

[0065] In some implementations, please refer to Figures 4 to 6The air distribution plate 204 includes a middle part 224 and multiple connecting parts 226. The multiple connecting parts 226 are spaced apart along the circumferential direction P of the burner 300 and connect the outer ring part 208 and the middle part 224. Two adjacent connecting parts 226, the outer ring part 208 and the middle part 224 together form a secondary air passage 250. The flame stabilizing groove 214 is located on the surface of the outer ring part 208 facing the secondary air passage 250.

[0066] Therefore, secondary air can be supplied to the central ring fire hole 212 and the flame stabilizing groove 214.

[0067] Specifically, the secondary air channel 250 can draw in secondary air through the gap between the outer ring portion 208 and the base 202 (which also serves as a secondary air channel), and the flame stabilizer groove 214 is located on the surface of the outer ring portion 208 facing the secondary air channel 250, so that secondary air can replenish the vicinity of the flame stabilizer groove 214.

[0068] Along the direction parallel to the central axis L of the burner 300, the flame stabilizing groove 214 and the central ring flame hole 212 are correspondingly arranged. Therefore, secondary air can also flow along the direction parallel to the central axis L of the burner 300 towards the central ring flame hole 212, supplementing the central ring flame hole 212 with secondary air. This ensures that sufficient secondary air is supplied to both the central ring flame hole 212 and the flame stabilizing groove 214, resulting in more complete combustion.

[0069] In some implementations, please refer to Figure 5 and Figure 7 The outer ring portion 208 includes a first side plate 236, a bottom plate 238, and a second side plate 240. The bottom plate 238 connects the first side plate 236 and the second side plate 240 and together they form a first chamber 242. The outer ring flame cap 206 is provided with a second chamber 244. The first chamber 242 and the second chamber 244 together form an outer ring mixing chamber 210. The first side plate 236 is closer to the middle portion 224 than the second side plate 240. The surface of the first side plate 236 facing the first chamber 242 is provided with a first step portion 252. The surface of the outer ring flame cap 206 away from the second chamber 244 is provided with a second step portion 254. The first step portion 252 and the second step portion 254 are connected in a cooperative manner.

[0070] This allows for a tighter fit between the outer ring burner cap 206 and the outer ring portion 208, preventing leakage of the mixed gas.

[0071] Specifically, the first step 252 and the second step 254 are connected in a cooperative manner. On the one hand, the area of ​​the connection between the outer ring burner cap 206 and the first side plate 236 is relatively large, and the cross-section of the connection is roughly Z-shaped, which lengthens the path of the mixed gas flow and makes it less likely for the mixed gas to leak from the connection. On the other hand, when the burner 300 is burning, the first step 252 and the second step 254 will expand slightly when heated, making the two more tightly connected, thereby preventing the mixed gas from leaking.

[0072] Optionally, the outer ring burner cap 206, on the surface facing away from the second chamber 244, is further provided with a third step portion 256. The third step portion 256 and the second step portion 254 are arranged at intervals along the radial direction of the burner 300, and the radial direction of the burner 300 is perpendicular to the central axis L of the burner 300. The third step portion 256 is connected to the second side plate 240, which also allows the outer ring burner cap 206 to fit more tightly with the second side plate 240, preventing leakage of the gas mixture.

[0073] In some embodiments, the intermediate portion 224 is provided with an inner annular mixing chamber 228 and an inner annular flame hole 230, with the inner annular flame hole 230 communicating with the inner annular mixing chamber 228.

[0074] This can save on burner 300 materials and reduce the cost of burner 300.

[0075] In related technologies, the middle section of the gas distribution plate has a chamber with an opening at the top. The burner also includes an inner ring burner cap (or a center burner cap), which has inner ring flame holes. The inner ring burner cap is located on the middle section and covers the opening of the chamber, thus forming an inner ring mixing chamber with the middle section. To install the inner ring burner cap, the chamber wall of the middle section is relatively thick to accommodate a first mounting part, and the inner ring burner cap has a second mounting part. The first and second mounting parts mate to assemble the inner ring burner cap to the middle section. However, this assembly method results in the use of more materials in the manufacture of the burner, leading to a higher cost.

[0076] In this embodiment of the invention, since the middle portion 224 is provided with an inner ring mixing chamber 228 and an inner ring flame hole 230, that is, the inner ring mixing chamber 228 and the inner ring flame hole 230 are directly provided in the middle portion 224 of the gas distribution plate 204, the inner ring flame cap (or center flame cap) can be omitted, and the middle portion 224 does not need to manufacture the mounting structure required to match the inner ring flame cap, thereby reducing material usage and lowering the cost of the burner 300, achieving the purpose of cost reduction and efficiency improvement. In one example, the burner 300 can be made of copper, and the burner 300 of this embodiment of the invention can reduce copper usage by 10% to 20%.

[0077] In some embodiments, the outer ring burner cap 206 is provided with an outer ring burner hole 234 on the circumferential side away from the central axis L of the burner 300. The outer ring burner hole 234 is connected to the outer ring mixing chamber 210. A guide space 258 is provided at the connection between the circumferential side of the outer ring burner cap 206 away from the central axis L of the burner 300 and the top surface 246. The guide space 258 is configured to guide the secondary air above the outer ring burner cap 206 to the circumferential side of the outer ring burner cap 206 away from the central axis L of the burner 300.

[0078] This reduces the amount of flue gas produced during combustion of the burner 300 to a certain extent and improves the energy efficiency of the burner 300.

[0079] Specifically, the burner 300 also includes an ignition needle 260 and a thermocouple 262, which are mounted on the base 202. The thermocouple 262 is located outside the outer ring flame port 234. The mixed gas can enter the outer ring mixing chamber 210 from the inner ring mixing chamber 228 through the connecting channel. A portion of the mixed gas is ejected from the outer ring flame port 234 and ignited by the ignition needle 260, forming an outer ring flame.

[0080] The outer ring flame hole 234 is located on the circumferential side of the outer ring flame cap 206 away from the central axis L of the burner 300. The guide space 258 is located at the connection between the circumferential side of the outer ring flame cap 206 away from the central axis L of the burner 300 and the top surface 246. When the outer ring flame hole 234 burns, it consumes nearby air. The guide space 258 can guide the secondary air above the outer ring flame cap 206 to the circumferential side of the outer ring flame cap 206 away from the central axis L of the burner 300. This allows for timely replenishment of secondary air for the combustion of the outer ring flame hole 234, resulting in more complete combustion of the outer ring flame, increasing the combustion rate of the gas mixture, reducing or even eliminating yellow flame, reducing the flue gas produced during combustion of the burner 300, and improving the energy efficiency of the burner 300. It also reduces costs and increases efficiency. The burner 300 exhibits low flue gas concentration and high energy efficiency during combustion, meeting relevant requirements.

[0081] Optionally, in Figure 1 In this embodiment, the flow guiding space 258 is in the form of a groove, which is inclined (excluding the vertical) and connects the outer ring burner cap 206 to the circumferential side and top surface 246 opposite to the central axis L of the burner 300. Alternatively, in other embodiments, the flow guiding space 258 may be in the form of a through hole.

[0082] Optionally, a plurality of flow guiding spaces 258 are provided at the connection between the outer ring burner cap 206 and the top surface 246 on the circumferential side away from the central axis L of the burner 300. The plurality of flow guiding spaces 258 are arranged at intervals along the circumferential direction P of the burner 300, and a plurality of outer ring flame holes 234 are provided on the circumferential side of the outer ring burner cap 206 away from the central axis L of the burner 300 along the circumferential direction P of the burner 300. As a result, the secondary air supply to the outer ring flame holes 234 is sufficient.

[0083] One embodiment of the present invention includes a burner 300 according to any of the above embodiments.

[0084] In the aforementioned stove, the outer ring portion 208 has multiple flame stabilizing grooves 214 on its surface facing the central axis L of the burner 300. Along the direction parallel to the central axis L of the burner 300, the flame stabilizing grooves 214 are correspondingly arranged with the central ring flame holes 212. Thus, when the burner 300 is working, the flame of the flame stabilizing grooves 214 can stabilize the flame of the central ring flame holes 212, thereby improving the flame stabilization effect, enhancing combustion performance, and reducing the smoke concentration during combustion of the burner 300.

[0085] Specifically, the cooktop may include, but is not limited to, gas stoves, integrated cooktops, ovens, etc. The cooktop may include one or more burners 300. The cooktop may include a control panel and a pot support. The control panel has an opening, and the pot support is disposed on the control panel and arranged around the opening. The burner 300 extends through the opening to above the control panel, and the pot support is arranged around the burner 300 to stably place the pot above the burner 300.

[0086] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0087] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A burner, characterized in that, include: Base; The air distribution plate is disposed on the base, and the air distribution plate includes an outer ring portion and; An outer ring burner cap is disposed on the outer ring portion, and the outer ring burner cap and the outer ring portion form an outer ring mixing chamber. The outer ring burner cap has a plurality of middle ring burner holes, which are spaced apart along the circumferential direction of the burner and communicate with the outer ring mixing chamber. The outer ring portion has a plurality of flame stabilizing grooves on its surface facing the central axis of the burner, which communicate with the outer ring mixing chamber. The plurality of flame stabilizing grooves are spaced apart along the circumferential direction of the burner and are arranged in a direction parallel to the central axis of the burner. The flame stabilizing grooves are corresponding to the middle ring burner holes.

2. The burner according to claim 1, characterized in that, The outer ring flame cap includes a top surface and an inclined surface. The inclined surface connects to the edge of the top surface near the central axis of the burner. The inclined surface slopes from the top surface toward the base. The middle ring flame hole passes through the inclined surface.

3. The burner according to claim 2, characterized in that, The inclination angle of the inclined plane is in the range of [10°, 30°].

4. The burner according to claim 2 or 3, characterized in that, The middle ring flame hole is inclined from the outer ring towards the central axis of the burner, and the angle between the axis of the middle ring flame hole and the central axis of the burner is in the range of [40°, 60°].

5. The burner according to claim 1, characterized in that, Along a direction parallel to the central axis of the burner, corresponding to each flame stabilizing groove, a plurality of central ring flame holes are spaced apart along a direction away from the central axis of the burner.

6. The burner according to claim 1, characterized in that, The gas distribution plate includes a middle part and multiple connecting parts. The multiple connecting parts are spaced apart along the circumferential direction of the burner and connect the outer ring part and the middle part. Two adjacent connecting parts, the outer ring part and the middle part together form a secondary air channel. The flame stabilizing groove is located on the surface of the outer ring part facing the secondary air channel.

7. The burner according to claim 6, characterized in that, The outer ring portion includes a first side plate, a bottom plate, and a second side plate. The bottom plate connects the first side plate and the second side plate and together form a first chamber. The outer ring flame cap has a second chamber. The first chamber and the second chamber together constitute the outer ring mixing chamber. The first side plate is closer to the middle portion than the second side plate. The surface of the first side plate facing the first chamber has a first step portion. The surface of the outer ring flame cap away from the second chamber has a second step portion. The first step portion and the second step portion are connected in a cooperative manner.

8. The burner according to claim 6, characterized in that, The middle part is provided with an inner ring mixing chamber and an inner ring flame hole, and the inner ring flame hole is connected to the inner ring mixing chamber.

9. The burner according to any one of claims 1-8, characterized in that, The outer ring burner cap has an outer ring flame hole on its circumferential side away from the central axis of the burner. The outer ring flame hole is connected to the outer ring mixing chamber. A flow guiding space is provided at the connection between the circumferential side of the outer ring burner cap away from the central axis of the burner and the top surface. The flow guiding space is configured to guide the secondary air above the outer ring burner cap to the circumferential side of the outer ring burner cap away from the central axis of the burner.

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

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