Combustor and stove

Abstract

The burner comprises a bottom cup, a gas inlet pipe, a gas outlet pipe, a gas inlet pipe, a gas outlet pipe, a gas inlet pipe and a gas outlet pipe, the gas distribution disc is arranged on the bottom cup, a plurality of convex ribs are arranged on the surface, facing the gas distribution disc, of the bottom cup, the convex ribs are arranged at intervals in the circumferential direction of the burner, an air channel is formed between every two adjacent convex ribs, and the air channels comprise the primary air channel and the secondary air channel; the primary air channels and the secondary air channels are alternately arranged in the circumferential direction of the combustor, the primary air channels are communicated with the bottom gas mixing cavity, the gas distribution disc is provided with a plurality of through holes, and each through hole is correspondingly communicated with one secondary air channel; a central gas mixing cavity is defined by the central fire cover and the gas distribution disc, the inner ring fire holes communicate with the central gas mixing cavity, and the inner ring fire holes communicate with the secondary air channel through the through holes; and an outer ring gas mixing cavity is defined by the outer ring fire cover and the gas distribution disc, and the outer ring fire holes communicate with the outer ring gas mixing cavity. The combustor can provide sufficient primary air and secondary air.

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, the burner includes a bottom cup and a distribution plate, with the distribution plate positioned on the bottom cup. The bottom cup has a bottom mixing chamber, where the combustion gas mixes with primary air to form a gas mixture. This gas mixture is then ejected from the burner's flame orifice and ignited to form a flame. After the gas mixture in the flame orifice burns, secondary air needs to be continuously supplied to ensure complete combustion. Insufficient supply of primary and secondary air will reduce the burner's performance. 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] An embodiment of the present invention provides a burner comprising:

[0005] The bottom cup is provided with a bottom gas mixing chamber;

[0006] The gas distribution plate is disposed on the bottom cup. The bottom cup has multiple raised ribs on its surface facing the gas distribution plate. The multiple raised ribs are spaced apart along the circumferential direction of the burner. An air channel is formed between two adjacent raised ribs. The air channel includes a primary air channel and a secondary air channel. The primary air channel and the secondary air channel are alternately arranged along the circumferential direction of the burner. The primary air channel is connected to the bottom mixing chamber. The gas distribution plate has multiple through holes, and each through hole is connected to one of the secondary air channels.

[0007] A center burner cap is disposed on the gas distribution plate, and the center burner cap and the gas distribution plate form a central mixing chamber. The center burner cap is provided with an inner ring burner hole, which communicates with the central mixing chamber. The inner ring burner hole communicates with the secondary air passage through the through hole.

[0008] An outer ring flame cap is disposed on the gas distribution plate. The outer ring flame cap and the gas distribution plate form an outer ring mixing chamber. The outer ring flame cap is provided with an outer ring flame hole, which communicates with the outer ring mixing chamber.

[0009] The aforementioned burner features multiple secondary air channels on its base cup, which connect to the inner ring flame holes, allowing for a continuous supply of secondary air to improve burner performance. The multiple primary and secondary air channels are spaced circumferentially along the burner, reducing resistance under hot conditions and increasing the air supply velocity, thus providing sufficient primary and secondary air to the burner.

[0010] In some embodiments, the bottom surface of the primary air passage slopes from the top to the bottom of the bottom mixing chamber.

[0011] In some embodiments, a baffle is provided on the bottom surface of the primary air passage.

[0012] In some embodiments, the two ribs forming the same primary air channel are parallel to each other.

[0013] In some embodiments, the gas distribution plate has a mounting portion on its surface facing the bottom cup, the burner includes a connecting rib, the connecting rib connects two protruding ribs forming the same secondary air channel near the two ends of the burner axis, the connecting rib has a guide portion on its surface facing the bottom mixing chamber, and the mounting portion is located in the bottom mixing chamber and supported by the guide portion.

[0014] In some embodiments, the gas distribution plate includes a central portion, multiple connecting portions, and an outer ring portion. The central burner cap is disposed on the central portion, and the outer ring burner cap is disposed on the outer ring portion. The multiple connecting portions connect the central portion and the outer ring portion along the circumferential direction of the burner. Two adjacent connecting portions, the central portion, and the outer ring portion form a secondary air cavity. One of the secondary air cavities connects the inner ring burner hole to two adjacent through holes.

[0015] In some embodiments, the inner annular flame holes are arranged corresponding to the secondary air chamber in a direction parallel to the axial direction of the burner.

[0016] In some embodiments, the outer ring burner cap includes an inclined surface facing the burner axis, the inclined surface having a middle ring burner hole communicating with the outer ring mixing chamber, and the middle ring burner hole being disposed corresponding to the secondary air chamber in a direction parallel to the burner axis.

[0017] In some embodiments, the inclined surface is provided with a plurality of protrusions, the plurality of protrusions are spaced apart along the circumferential direction of the burner, a first groove is formed between two adjacent protrusions, the bottom surface of the first groove is provided with the central ring flame hole, and the protrusion is provided with the central ring flame hole.

[0018] In some embodiments, the outer ring flame hole is located on the circumferential side of the outer ring flame cover away from the central flame cover, and a flow guiding space is provided at the connection between the circumferential side of the outer ring flame cover away from the central flame cover and the top surface. The flow guiding space is configured to guide the secondary air above the outer ring flame cover to the circumferential side of the outer ring flame cover away from the central flame cover.

[0019] In some embodiments, the flow guiding space includes a first flow guiding space and a second flow guiding space. Along the circumferential direction of the burner, a plurality of the first flow guiding spaces form a first flow guiding group, and a second flow guiding space is provided between two adjacent first flow guiding groups. The width of the second flow guiding space is greater than the width of the first flow guiding space.

[0020] An embodiment of the present invention provides a stove that includes a burner according to any of the above embodiments.

[0021] The aforementioned stove features multiple secondary air channels on its base cup, which connect to the inner ring flame holes, allowing for a continuous supply of secondary air to improve burner performance. The multiple primary and secondary air channels are spaced circumferentially along the burner, reducing resistance under hot conditions and increasing the air supply velocity, thus providing sufficient primary and secondary air to the burner.

[0022] 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

[0023] 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.

[0024] Figure 1 This is a three-dimensional schematic diagram of a burner according to an embodiment of the present invention;

[0025] Figure 2 This is a top view of the burner according to an embodiment of the present invention;

[0026] Figure 3 This is a side view of the burner according to an embodiment of the present invention;

[0027] Figure 4 This is a top view of the burner according to an embodiment of the present invention;

[0028] Figures 5 to 6 This is an exploded view of the burner according to an embodiment of the present invention;

[0029] Figures 7 to 8 This is a cross-sectional schematic diagram of the burner according to an embodiment of the present invention.

[0030] Explanation of key component reference numerals:

[0031] Burner 100, bottom cup 12, gas distribution plate 14, center burner cap 16, outer ring burner cap 18, bottom mixing chamber 20, raised rib 22, primary air channel 24, secondary air channel 26, through hole 28, center mixing chamber 30, inner ring flame hole 32, outer ring mixing chamber 34, outer ring flame hole 36, nozzle seat 38, interface 40, ejector tube 42, center part 44, connecting part 46, outer ring part 48, first chamber 50, connecting chamber 52, second chamber 54, third chamber 56, fourth chamber 58, baffle 60, fixing part 61, mounting part 62, connecting rib 64, guide part 66, secondary air chamber 68, inclined surface 70, center ring flame hole 72, protrusion 73, first groove 74, ignition needle 76, thermocouple 78, first guide space 80, second guide space 82, first guide group 84, second groove 86. Detailed Implementation

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] Please see Figures 1 to 6 A burner 100 according to an embodiment of the present invention includes a bottom cup 12, a gas distribution plate 14, a central flame cap 16, and an outer ring flame cap 18. The bottom cup 12 is provided with a bottom mixing chamber 20. The gas distribution plate 14 is disposed on the bottom cup 12, and a plurality of raised ribs 22 are provided on the surface of the bottom cup 12 facing the gas distribution plate 14. The plurality of raised ribs 22 are spaced apart along the circumferential direction P of the burner 100, and an air channel is formed between two adjacent raised ribs 22. The air channel includes a primary air channel 24 and a secondary air channel 26, which are alternately arranged along the circumferential direction P of the burner 100. The primary air channel 24 communicates with the bottom mixing chamber 20. The gas distribution plate 14 is provided with a plurality of through holes 28, each through hole 28 corresponding to a secondary air channel 26.

[0038] A center burner cap 16 is mounted on a distribution plate 14, forming a central mixing chamber 30 with the distribution plate 14. The center burner cap 16 has an inner ring burner hole 32, which connects to the central mixing chamber 30 and is connected to a secondary air passage 26 via a through hole 28. An outer ring burner cap 18 is mounted on the distribution plate 14, forming an outer ring mixing chamber 34 with the distribution plate 14. The outer ring burner cap 18 has an outer ring burner hole 36, which connects to the outer ring mixing chamber 34.

[0039] The burner 100 described above has multiple secondary air channels 26 on the bottom cup 12. The secondary air channels 26 are connected to the inner ring flame holes 32, which can continuously replenish secondary air to improve the performance of the burner 100. The multiple primary air channels 24 and secondary air channels 26 are arranged circumferentially around the burner 100, which can reduce the resistance under hot conditions and increase the air replenishment flow rate, thereby providing sufficient primary and secondary air to the burner 100.

[0040] Specifically, the burner 100 of this embodiment can be an upper-intake burner, in which the air inlet of the primary air passage 24 is located above the cooktop panel. A nozzle seat 38 may be provided at the bottom of the bottom mixing chamber 20, and the nozzle is mounted on the nozzle seat 38. An interface 40 is provided on the outer surface of the bottom cup 12 for connecting a gas pipeline. Gas flows through the interface 40 to the nozzle and is injected into the bottom mixing chamber 20. The burner 100 may be made of materials including, but not limited to, copper.

[0041] The bottom cup 12 has multiple raised ribs 22 on its surface facing the air distribution plate 14. These raised ribs 22 are spaced apart along the circumferential direction P of the burner 100, and an air channel is formed between adjacent raised ribs 22. The air channel includes a primary air channel 24 and a secondary air channel 26, which are alternately arranged along the circumferential direction P of the burner 100. The primary air channel 24 connects to the bottom mixing chamber 20, thereby replenishing the bottom mixing chamber 20 with primary air. The raised ribs 22 can be integrated with the bottom cup 12, or they can be connected to the bottom cup 12 by welding, bolts, or other methods; this invention does not specifically limit the method used.

[0042] The heights of all the raised ribs 22 can be the same, different, or partially the same and partially different. Figure 6 In the middle, all the raised ribs 22 have the same height.

[0043] The fuel gas entering the bottom mixing chamber 20 mixes with the air in the bottom mixing chamber 20 to form a mixed gas. The mixed gas enters the gas distribution plate 14 through the ejector tube 42 at the bottom of the gas distribution plate 14. After the mixed gas enters through the ejector tube 42, a negative pressure is formed in the bottom mixing chamber 20. The negative pressure draws in primary air from the primary air channel 24, which then mixes with the fuel gas ejected from the nozzle to form a mixed gas.

[0044] The gas distribution plate 14 is disposed on the bottom cup 12, and the gas distribution plate 14 can distribute the mixed gas. Optionally, the gas distribution plate 14 includes a central portion 44, a plurality of connecting portions 46, and an outer ring portion 48. The plurality of connecting portions 46 connect the central portion 44 and the outer ring portion 48 along the circumferential direction P of the burner 100. The central portion 44 is connected to the injector tube 42, and optionally, the central portion 44 is provided with a first chamber 50. The connecting portions 46 are provided with connecting chambers 52.

[0045] The air distribution plate 14 is provided with multiple through holes 28, each through hole 28 corresponding to a secondary air channel 26. The through holes 28 can correspondingly connect the gap between two adjacent connecting parts 46, so that secondary air can enter the gap through the secondary air channel 26 and flow to the inner annular flame hole 32.

[0046] The outer ring portion 48 is arranged around the central portion 44. Optionally, the outer ring portion 48 is provided with a second chamber 54, and the connecting chamber 52 connects the first chamber 50 and the second chamber 54.

[0047] The center burner cap 16 is located on the gas distribution plate 14. Specifically, the center burner cap 16 is located on the central part 44. Optionally, the center burner cap 16 has a third chamber 56. The first chamber 50 and the third chamber 56 constitute the central mixing chamber 30. The inner ring burner hole 32 communicates with the central mixing chamber 30.

[0048] The outer ring burner cap 18 is disposed on the gas distribution plate 14. Specifically, the outer ring burner cap 18 is disposed on the outer ring portion 48. Optionally, the outer ring burner cap 18 is provided with a fourth chamber 58. The fourth chamber 58 and the second chamber 54 form an outer ring mixing chamber 34. The outer ring burner hole 36 is connected to the outer ring mixing chamber 34. The connecting chamber 52 connects the central mixing chamber 30 and the outer ring mixing chamber 34.

[0049] The mixed gas enters the central mixing chamber 30 through the ejector tube 42. A portion of the mixed gas is ejected through the inner ring flame hole 32 and combusts to form an inner ring flame. Another portion of the mixed gas enters the outer ring mixing chamber 34 through the connecting chamber 52 and is ejected through the outer ring flame hole 36, combusting to form an outer ring flame.

[0050] When the inner ring burner hole 32 is burning, it consumes the surrounding air and creates a negative pressure. The negative pressure draws in secondary air through the through hole 28 and the secondary air channel 26, thereby replenishing the inner ring burner hole 32 with secondary air in a timely manner. This ensures that the secondary air is adequately replenished, reduces the flue gas concentration when the burner 100 is working, improves the energy efficiency of the burner 100, and meets the relevant requirements.

[0051] In one embodiment, the primary air passages 24 and secondary air passages 26 are of the same number and are alternately arranged along the circumference of the burner 100, which can maximize the utilization of the air in the space surrounding the burner 100. Optionally, in Figure 6 In the burner 100, there are 8 air channels, 4 of which are primary air channels 24 and the other 4 are secondary air channels 26. The multiple air channels surrounded by ribs 22 can reduce the resistance in the air channels under hot conditions, thereby increasing the air replenishment velocity. This is beneficial for the burner 100 to quickly replenish primary and secondary air, improve the performance of the burner 100, and reduce yellow flame.

[0052] Optionally, the end of the rib 22 away from the axis L of the burner 100 is positioned close to the edge of the bottom cup 12, so that the air inlet of the air passage is closer to the edge of the bottom cup 12, allowing primary air to enter the bottom mixing chamber 20 more quickly, and allowing secondary air to flow through the through hole 28 to the inner ring flame hole 32 more quickly.

[0053] Please see Figure 6 In some embodiments, the bottom surface of the primary air passage 24 is inclined from the top to the bottom of the bottom mixing chamber 20.

[0054] This allows the primary air to be fully mixed with the combustion gas in the bottom mixing chamber 20.

[0055] Specifically, in one embodiment, the depth of the primary air channel 24 gradually increases along the direction from the air inlet of the primary air channel 24 to the bottom mixing chamber 20, allowing the primary air to be evenly dispersed. The bottom surface of the primary air channel 24 slopes from the top to the bottom of the bottom mixing chamber 20, which also allows the primary air to mix rapidly with the combustion gas ejected from the bottom nozzle. Thus, the primary air can be mixed more thoroughly with the combustion gas in the bottom mixing chamber 20.

[0056] Please see Figure 6 In some embodiments, a baffle 60 is provided on the bottom surface of the primary air channel 24, and the baffle 60 connects two protruding ribs that form the primary air channel.

[0057] This prevents liquid outside the burner 100 from entering the bottom mixing chamber 20.

[0058] Specifically, in one embodiment, a fixing part 61 is provided on the bottom surface of a portion of the primary air passage 24. The fixing part 61 is used to fix the burner 100 to the panel of the stove. For primary air passages 24 without fixing parts 61, a baffle 60 is provided at the air inlet of the primary air passage 24; for primary air passages 24 with fixing parts 61, the baffle 60 is provided on the side of the fixing part 61 near the axis L of the burner 100.

[0059] The height of the baffle 60 can be determined according to actual needs, and the present invention does not impose a specific limitation on it.

[0060] Please see Figure 6 In some embodiments, the two ribs 22 forming the same primary air channel 24 are parallel to each other.

[0061] Therefore, the uniform width of the primary air channel 24 ensures smooth airflow.

[0062] Specifically, two parallel ribs 22 form a primary air channel 24 of uniform width. The extension direction of the primary air channel 24 intersects the axis L of the burner 100, thereby allowing the primary air to flow smoothly and further improving the speed of primary air replenishment.

[0063] Please see Figure 5 , Figure 6 and Figure 8 In some embodiments, the gas distribution plate 14 has a mounting portion 62 on its surface facing the bottom cup 12, the burner 100 includes a connecting rib 64, the connecting rib 64 connects two protruding ribs 22 forming the same secondary air channel 26 near the two ends of the burner 100 axis L, the connecting rib 64 has a guide portion 66 on its surface facing the bottom mixing chamber 20, and the mounting portion 62 is located in the bottom mixing chamber 20 and supported on the guide portion 66.

[0064] Therefore, the gas distribution plate 14 can be installed more securely on the bottom cup 12.

[0065] Specifically, in Figure 5 In this configuration, the surface of the air distribution plate 14 facing the bottom cup 12 is the bottom surface of the air distribution plate 14. In one embodiment, the height of the connecting rib 64 may be the same as the height of the raised rib 22. A guide portion 66 is formed on the surface of the connecting rib 64 facing the bottom mixing chamber 20. During installation, the mounting portion 62 is correspondingly connected to the guide portion 66 to facilitate the positioning and installation of the air distribution plate 14.

[0066] The connecting rib 64 also allows almost all of the secondary air to flow towards the through hole 28, increasing the amount of secondary air replenishment to the inner ring fire hole 32.

[0067] Please see Figure 6 and Figure 7In some embodiments, the gas distribution plate 14 includes a central portion 44, a plurality of connecting portions 46 and an outer ring portion 48. A central burner cap 16 is disposed on the central portion 44, and an outer ring burner cap 18 is disposed on the outer ring portion 48. The plurality of connecting portions 46 connect the central portion 44 and the outer ring portion 48 along the circumferential direction P of the burner 100. Two adjacent connecting portions 46, the central portion 44 and the outer ring portion 48 form a secondary air cavity 68. The secondary air cavity 68 connects the inner ring burner hole 32 and two adjacent through holes 28.

[0068] This allows for the continuous replenishment of secondary air to the inner ring fire hole 32.

[0069] Specifically, air from outside the burner 100 enters the burner 100 through the secondary air passage 26 and flows into the secondary air chamber 68 through the through hole 28, finally participating in combustion at the inner ring flame hole 32. This allows for a continuous supply of secondary air to the inner ring flame hole 32, improving the performance of the burner 100.

[0070] Furthermore, a secondary air cavity 68 connects the inner ring fire hole 32 with two adjacent through holes 28. The secondary air cavity 68 can be supplied with secondary air by the two through holes 28, which makes the amount of secondary air replenished to the inner ring fire hole 32 large.

[0071] Please see Figure 1 In some embodiments, the inner annular flame hole 32 is provided in the direction parallel to the axis L of the burner 100, corresponding to the secondary air chamber 68.

[0072] This allows for a more thorough replenishment of secondary air to the inner ring fire hole 32.

[0073] Specifically, in Figure 1 In the burner 100, the direction parallel to the axis L is the vertical direction. In the vertical direction, the inner ring flame hole 32 is arranged corresponding to the secondary air chamber 68, thereby enabling the inner ring flame hole 32 to burn completely.

[0074] Since the connecting part 46 connects the central part 44 and the outer ring part 48, secondary air is difficult to reach the position of the central burner cap 16 corresponding to the connecting part 46 in the vertical direction. Therefore, no inner ring flame hole 32 is provided at the position of the central burner cap 16 corresponding to the connecting part 46. In the vertical direction, the inner ring flame hole 32 is provided corresponding to the secondary air cavity 68. On the one hand, this allows the secondary air cavity 68 to provide sufficient secondary air to the inner ring flame hole 32. On the other hand, the width of the secondary air cavity 68 in the circumferential direction P of the burner 100 is also relatively large, allowing for more inner ring flame holes 32 to be provided at the position of the central burner cap 16 corresponding to the secondary air cavity 68. This also avoids, to some extent, the phenomenon of insufficient heating area and uneven heating caused by providing too few inner ring flame holes 32.

[0075] Optionally, in Figure 1 and Figure 2 In the middle, there are four secondary air cavities 68, each secondary air cavity 68 corresponds to a set of inner ring flame holes 32, and each set of inner ring flame holes 32 has 5 inner ring flame holes 32.

[0076] In some embodiments, the outer ring burner cap 18 includes an inclined surface 70 facing the axis L of the burner 100, the inclined surface 70 is provided with a middle ring burner hole 72, the middle ring burner hole 72 communicates with the outer ring mixing chamber 34, and in the direction parallel to the axis L of the burner 100, the middle ring burner hole 72 is provided corresponding to the secondary air chamber 68.

[0077] This allows for a more thorough replenishment of secondary air to the central ring fire hole 72.

[0078] Specifically, in Figure 1 In the burner 100, the direction parallel to the axis L is the vertical direction. In this vertical direction, the central ring flame port 72 is positioned corresponding to the secondary air chamber 68, thereby ensuring complete combustion of the central ring flame port 72. The burner 100 can be a three-ring burner. It is understood that in other embodiments, the central ring flame port 72 may be omitted, and the burner 100 can be a two-ring burner.

[0079] Similarly, since the connecting part 46 connects the central part 44 and the outer ring part 48, secondary air is difficult to reach the position of the inclined surface 70 of the outer ring burner cap 18 corresponding to the connecting part 46 in the vertical direction. Therefore, no middle ring burner hole 72 is provided on the inclined surface 70 of the outer ring burner cap 18 corresponding to the connecting part 46. In the vertical direction, the middle ring burner hole 72 is provided corresponding to the secondary air cavity 68. On the one hand, this allows the secondary air cavity 68 to provide sufficient secondary air to the middle ring burner hole 72. On the other hand, the width of the secondary air cavity 68 in the circumferential direction P of the burner 100 is also relatively large, allowing for more middle ring burner holes 72 to be provided on the inclined surface 70 of the outer ring burner cap 18 corresponding to the secondary air cavity 68. This also avoids, to some extent, the phenomenon of insufficient heating area and uneven heating caused by providing too few middle ring burner holes 72.

[0080] In some embodiments, the inclined surface 70 is provided with a plurality of protrusions 73, which are spaced apart along the circumferential direction P of the burner 100. A first groove 74 is formed between two adjacent protrusions 73. The bottom surface of the first groove 74 is provided with a central ring flame hole 72, and the protrusions 73 are provided with central ring flame holes 72.

[0081] Therefore, the secondary air in the secondary air cavity 68 can be guided in the direction of the outer ring fire hole 36.

[0082] Specifically, the outer ring flame hole 36 is located on the circumferential side of the outer ring flame cap 18 away from the central flame cap 16. The first groove 74 can guide a portion of the secondary air in the secondary air chamber 68 to the outside of the outer ring flame cap 18, so that this portion of secondary air flows to the outer ring flame hole 36, allowing the mixed gas at the outer ring flame hole 36 to burn more completely, improving the energy efficiency of the burner 100 and reducing the flue gas when the burner 100 is working.

[0083] In some embodiments, the outer ring flame hole 36 is provided on the circumferential side of the outer ring flame cover 18 away from the central flame cover 16, and a flow guiding space is provided at the connection between the circumferential side of the outer ring flame cover 18 away from the central flame cover 16 and the top surface. The flow guiding space is configured to guide the secondary air above the outer ring flame cover 18 to the circumferential side of the outer ring flame cover 18 away from the central flame cover 16.

[0084] This allows for the replenishment of sufficient secondary air to the outer ring fire hole 36.

[0085] Specifically, multiple outer ring flame holes 36 are arranged along the circumferential direction P of the burner 100 on the circumferential side of the outer ring flame cap 18 opposite to the central flame cap 16. The mixed gas is ejected from the outer ring flame holes 36.

[0086] The burner 100 also includes an ignition needle 76 and a thermocouple 78, with the thermocouple 78 positioned near the outer ring flame port 36. The mixed gas ejected from the outer ring flame port 36 is ignited by the ignition needle 76, forming an outer ring flame. The outer ring flame consumes nearby air. Secondary air, except for the circumferential side of the outer ring flame cap 18 away from the central flame cap 16, can be supplied to the outer ring flame port 36. The guide space can also guide the secondary air above the outer ring flame cap 18 to the circumferential side of the outer ring flame cap 18 away from the central flame cap 16, thereby further increasing the amount of secondary air supplied to the outer ring flame port 36, enabling the mixed gas to burn completely. This reduces the flue gas concentration during burner 100 operation, improves energy efficiency, and reduces yellow flame.

[0087] In the embodiment shown in the figure, the flow guiding space is in the form of a groove. It can be understood that in other embodiments, the flow guiding space may also be in the form of a through hole 28. This through hole 28 is not connected to the outer ring mixing chamber 34 inside the outer ring flame cap 18.

[0088] Optionally, the airflow space is inclined to connect the top surface and the circumferential side of the outer ring flame cap 18, thereby enabling smoother secondary airflow.

[0089] In some implementations, please refer to Figure 6 The flow guiding space includes a first flow guiding space 80 and a second flow guiding space 82. Along the circumferential direction P of the burner 100, a number of first flow guiding spaces 80 form a first flow guiding group 84. A second flow guiding space 82 is provided between two adjacent first flow guiding groups 84. The width of the second flow guiding space 82 is greater than the width of the first flow guiding space 80.

[0090] This allows for a better improvement in the energy efficiency of the burner 100.

[0091] Specifically, the cooktop may include a burner 100, a control panel, and a pot support. The control panel has an opening through which the burner 100 passes. The pot support is mounted on the control panel and arranged around the burner 100. The pot support has multiple support arms, which are spaced P apart along the circumferential direction of the burner 100. The support arms can be used to support the pot, so that the pot is stably positioned above the burner 100.

[0092] The flame generated by the burner 100 during operation cannot directly heat the part of the pot that contacts the support arm due to the obstruction of the support arm. Therefore, the area of ​​the outer ring burner cap 18 facing away from the central burner cap 16, corresponding to the support arm, is typically provided with few or no outer ring burner holes 36. The second flow guide space 82 is relatively wide, and the design of the outer ring burner cap 18 can be adapted to the pot support. The second flow guide space 82 can cover part or all of the area of ​​the outer ring burner cap 18 facing away from the central burner cap 16, corresponding to the support arm. This allows the second flow guide space 82 to also guide secondary air near the support arm to the circumferential side of the outer ring burner cap 18 facing away from the central burner cap 16, thereby increasing the amount of secondary air supplied to the outer ring burner holes 36 near the support arm and thus improving the energy efficiency of the burner 100.

[0093] The second flow guide space 82 can be configured one-to-one with the support arm. Figure 6 In the burner 100, there are four first flow guide groups 84. Along the circumferential direction P of the burner 100, a second flow guide space 82 is provided between two adjacent first flow guide groups 84, for a total of four second flow guide spaces 82, corresponding to the pot support with four support arms. The number of first flow guide spaces 80 in each first flow guide group 84 can be the same or different.

[0094] Optionally, the width of the second flow guide space 82 is greater than the width of the support arm.

[0095] Optionally, please combine Figure 2 In the radial direction of the burner 100, the second flow guide space 82 is provided corresponding to the connecting part 46. Optionally, the inclined surface 70 is also provided with a second groove 86, which can guide the secondary air above the connecting part 46 to the second flow guide space 82, so as to more fully replenish the secondary air to the outer ring flame hole 36.

[0096] In summary, in the burner of this embodiment, the gas distribution plate 14 is provided with through holes 28 and a secondary air chamber 68, which efficiently and quickly replenishes secondary air, improves the performance of the burner 100, and reduces yellow flame. The bottom cup 12 is designed with an air channel structure, which efficiently and quickly replenishes primary and secondary air, improves the performance of the burner 100, and reduces yellow flame.

[0097] An embodiment of the present invention provides a stove including a burner 100 of any of the above embodiments.

[0098] In the aforementioned cooktop, multiple secondary air channels 26 are provided on the bottom cup 12. These secondary air channels 26 are connected to the inner ring flame holes 32, allowing for a continuous supply of secondary air to improve the performance of the burner 100. The multiple primary air channels 24 and secondary air channels 26 are spaced apart circumferentially along the burner 100, which reduces resistance under hot conditions, increasing the air supply velocity and thus providing sufficient primary and secondary air to the burner 100.

[0099] Specifically, the cooktop includes, but is not limited to, gas cooktops, integrated cooktops, ovens, etc. The cooktop may include one or more burners 100.

[0100] 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.

[0101] 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: The bottom cup is provided with a bottom gas mixing chamber; The gas distribution plate is disposed on the bottom cup. The bottom cup has multiple raised ribs on its surface facing the gas distribution plate. The multiple raised ribs are spaced apart along the circumferential direction of the burner. An air channel is formed between two adjacent raised ribs. The air channel includes a primary air channel and a secondary air channel. The primary air channel and the secondary air channel are alternately arranged along the circumferential direction of the burner. The primary air channel is connected to the bottom mixing chamber. The gas distribution plate has multiple through holes, and each through hole is connected to one of the secondary air channels. A center burner cap is disposed on the gas distribution plate, and the center burner cap and the gas distribution plate form a central mixing chamber. The center burner cap is provided with an inner ring burner hole, which communicates with the central mixing chamber. The inner ring burner hole communicates with the secondary air passage through the through hole. An outer ring flame cap is disposed on the gas distribution plate. The outer ring flame cap and the gas distribution plate form an outer ring mixing chamber. The outer ring flame cap is provided with an outer ring flame hole, which communicates with the outer ring mixing chamber.

2. The burner according to claim 1, characterized in that, The bottom surface of the primary air channel slopes from the top to the bottom of the bottom mixing chamber.

3. The burner according to claim 1, characterized in that, A baffle is provided on the bottom surface of the primary air passage.

4. The burner according to claim 1, characterized in that, The two raised ribs that form the same primary air channel are parallel to each other.

5. The burner according to claim 1, characterized in that, The gas distribution plate has a mounting part on its surface facing the bottom cup. The burner includes a connecting rib. The connecting rib connects two protruding ribs that form the same secondary air channel near the two ends of the burner axis. The connecting rib has a guide part on its surface facing the bottom mixing chamber. The mounting part is located in the bottom mixing chamber and supported by the guide part.

6. The burner according to claim 1, characterized in that, The gas distribution plate includes a central part, multiple connecting parts, and an outer ring part. The central burner cap is disposed on the central part, and the outer ring burner cap is disposed on the outer ring part. The multiple connecting parts connect the central part and the outer ring part along the circumferential direction of the burner. Two adjacent connecting parts, the central part, and the outer ring part form a secondary air cavity. One of the secondary air cavities connects the inner ring burner hole and two adjacent through holes.

7. The burner according to claim 6, characterized in that, In a direction parallel to the axis of the burner, the inner ring flame hole is arranged corresponding to the secondary air cavity.

8. The burner according to claim 6, characterized in that, The outer ring flame cap includes an inclined surface facing the burner axis, and the inclined surface is provided with a middle ring flame hole. The middle ring flame hole communicates with the outer ring mixing chamber. In a direction parallel to the burner axis, the middle ring flame hole is arranged corresponding to the secondary air chamber.

9. The burner according to claim 8, characterized in that, The inclined surface is provided with a plurality of protrusions, which are spaced apart along the circumferential direction of the burner. A first groove is formed between two adjacent protrusions. The bottom surface of the first groove is provided with the central ring flame hole, and the protrusion is provided with the central ring flame hole.

10. The burner according to any one of claims 1-9, characterized in that, The outer ring flame hole is located on the circumferential side of the outer ring flame cover away from the central flame cover. A flow guiding space is provided at the connection between the circumferential side of the outer ring flame cover away from the central flame cover and the top surface. The flow guiding space is configured to guide the secondary air above the outer ring flame cover to the circumferential side of the outer ring flame cover away from the central flame cover.

11. The burner according to claim 10, characterized in that, The flow guiding space includes a first flow guiding space and a second flow guiding space. Along the circumferential direction of the burner, a plurality of first flow guiding spaces form a first flow guiding group. A second flow guiding space is provided between two adjacent first flow guiding groups. The width of the second flow guiding space is greater than the width of the first flow guiding space.

12. A stove, characterized in that, Includes the burner according to any one of claims 1-11.

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