Combustor and gas stove

Abstract

The utility model belongs to the technical field of cooking utensils, and specifically discloses a burner and gas stove, the burner includes base, fire divider and baffle, the fire divider is connected on the base, the top surface of fire divider is equipped with a plurality of first fire hole, a plurality of first fire hole interval distribution around the central axis of fire divider, the fire divider is connected with the outer ring gas supply chamber and the airflow channel of intercommunication between the base, the outer ring gas supply chamber is connected in first fire hole, gas flows through airflow channel, outer ring gas supply chamber and first fire hole in proper order, the base is equipped with the guide surface of the gas outlet end of the airflow channel, the guide surface is inclined upwards from the side close to the central axis to the side far from the central axis, the baffle is connected to the fire divider, the baffle is located in the outer ring gas supply chamber, and is located between the guide surface and the first fire hole opposite along the extension direction of the central axis of the guide surface, which can effectively solve the problem of easy flame separation at the first fire hole.

Description

Technical Field

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

[0002] A burner typically includes a burner cap with an outer ring gas supply chamber. The top surface of the burner cap has multiple outer ring flame holes that connect to the outer ring gas supply chamber, so that the combustion of the gas at the outer ring flame holes forms the outer ring flame of the burner.

[0003] However, in the related technology, the gas in the burner enters the gas distribution plate from the burner's air inlet and then flows to the outer ring gas supply chamber. It usually rushes upward rapidly along the airflow guide surface of the burner base towards the outer ring flame hole. The gas flow velocity in the outer ring gas supply chamber is too fast, which makes it easy for flame lift-off to occur at the outer ring flame hole. Utility Model Content

[0004] One of the technical problems solved by this invention is to provide a burner that can effectively prevent flame lift-off.

[0005] The second technical problem solved by this utility model is to provide a gas stove that can effectively improve combustion stability.

[0006] The first technical problem mentioned above is solved by the following technical solution:

[0007] A burner, comprising:

[0008] Base;

[0009] The flame distributor is connected to the base. The top surface of the flame distributor is provided with a plurality of first flame holes. The plurality of first flame holes are distributed at intervals around the central axis of the flame distributor. The flame distributor and the base form a connected outer ring gas supply chamber and a gas flow channel. The outer ring gas supply chamber is connected to the first flame holes. The gas flows sequentially through the gas flow channel, the outer ring gas supply chamber and the first flame holes.

[0010] The base also has a guide surface facing the air outlet end of the airflow channel, the guide surface being inclined upwards from the side near the central axis to the side away from the central axis; and,

[0011] A baffle plate is connected to the flame distributor. The baffle plate is located inside the outer ring gas supply chamber and between the guide surface and the first flame hole that is directly opposite to the guide surface along the extension direction of the central axis.

[0012] The burner described in this utility model has the following advantages compared with the prior art:

[0013] By setting a baffle plate extending towards the inner side of the outer ring gas supply chamber in the igniter, with the baffle plate corresponding to the outlet end of the gas flow channel and located between the first burner hole and the guide surface, the baffle plate can block the gas flowing from the outlet end of the gas flow channel through the outer ring gas supply chamber to the first burner hole. This increases the resistance encountered by the gas when it flows inside the outer ring gas supply chamber, reduces the flow velocity of the gas flowing along the guide surface to the first burner hole, and effectively slows down the flow velocity of the gas in the outer ring gas supply chamber, making it less likely for the flame burning at the first burner hole to detach.

[0014] In one embodiment, the baffle plate extends obliquely toward the top surface of the fire distributor in a direction away from the central axis.

[0015] In one embodiment, the base also has an air intake channel, the outer ring air supply chamber is spaced around the outer periphery of the air intake channel, a plurality of air intake channels are formed between the flame distributor and the base, the plurality of air intake channels are spaced around the central axis, and the air intake ends of the plurality of air intake channels are all connected to the air intake channel.

[0016] In one embodiment, the air baffle is an annular plate arranged around the central axis; or...

[0017] The burner has a plurality of baffles, which are spaced apart around the central axis.

[0018] In one embodiment, the first flame hole is an elongated hole, and / or, in a projection plane perpendicular to the central axis, the overlapping area of ​​the orthographic projection of the baffle plate and the orthographic projection of the first flame hole is S1, and the total orthographic projection area of ​​the plurality of first flame holes is S2, 0.2≤S1 / S2≤0.5.

[0019] In one embodiment, the flame distributor includes a first flame cap and a gas distribution component. The top surface of the first flame cap is provided with a plurality of first flame holes, and the base is connected to one side of the first flame cap.

[0020] The gas distributor is disposed between the first burner cap and the base, and the outer ring gas supply chamber is formed between the gas distributor, the first burner cap and the base. The airflow channel is formed between the gas distributor and the base, and the baffle plate is connected to the gas distributor.

[0021] In one embodiment, the flame distributor further includes a second flame cap, the first flame cap is disposed around the outer periphery of the second flame cap, the second flame cap is provided with a second flame hole, and a central gas supply chamber communicating with the second flame hole is formed between the gas distributor and the second flame cap.

[0022] In one embodiment, the air distribution component includes an air distribution disc and an air distribution sleeve, both of which are sheet metal parts;

[0023] The air distribution plate includes a first ring and a first cylinder. The first ring is sleeved and sealed to the outer periphery of the air distribution sleeve. The first cylinder surrounds and is connected to the outer periphery of the first ring. The baffle plate is integrally connected to the first cylinder.

[0024] The second burner cap is also provided with an opening connected to the second burner hole on the side near the base. The first annular portion abuts against the second burner cap at the opening, so that the interior of the gas distribution sleeve is connected to the interior of the second burner cap through the opening to form the central gas supply chamber.

[0025] In one embodiment, the first ring has a protrusion that protrudes toward the base.

[0026] In one embodiment, the convex bulge abuts against the base, and / or the air distribution plate is provided with a plurality of the convex bulges, which are spaced apart around the central axis.

[0027] In one embodiment, the base is provided with an avoidance through hole corresponding to the protrusion, the top of the protrusion is provided with an air supply through hole, and the top of the protrusion is also provided with a first flange surrounding the air supply through hole, the outer periphery of the first flange being tightly connected to the hole wall of the avoidance through hole.

[0028] In one embodiment, the first ring has a first portion and a second portion, the first portion being an annular sheet, the first portion abutting against the second flame cap at the opening, and the second portion surrounding and connected to the outer periphery of the first portion;

[0029] The first part is provided with a first through hole, and the second burner cap is also provided with a second through hole on the outer periphery of the opening. The burner also includes a fastener, which passes through the first through hole and the second through hole and locks the first part and the second burner cap together. And / or, the outer periphery of the gas distribution sleeve is provided with a first annular groove, and the inner ring of the first part is tightly connected to the first annular groove.

[0030] In one embodiment, the second flame cap includes a flame cap seat and a flame cap body. The flame cap seat is a sheet metal part. The flame cap seat includes a first cylindrical portion and an annular portion. The annular portion is connected to the end of the first cylindrical portion near the base and abuts against the gas distributor. The flame cap body includes a top structure and a second cylindrical portion. The second flame hole is disposed on the top structure. The top structure abuts against the end of the first cylindrical portion away from the annular portion. The second cylindrical portion is connected to the end of the top structure near the first cylindrical portion and is sleeved on the outer periphery of the first cylindrical portion.

[0031] In one embodiment, the thickness of the top structure is greater than the maximum thickness of the flame cap seat at at least a portion of its location; and / or,

[0032] The first cylindrical portion has a plurality of protrusions extending outwards, the plurality of protrusions being spaced apart around the central axis, and the protrusions abutting against the inner wall surface of the second cylindrical portion; and / or,

[0033] The outer periphery of the top structure is also provided with a plurality of flame stabilizing holes and flame stabilizing grooves. The plurality of flame stabilizing holes are distributed at intervals around the central axis, and all the flame stabilizing holes are located at intervals on the side of the second fire hole near the base. The flame stabilizing grooves are arranged around the central axis and are connected to all the flame stabilizing holes.

[0034] In one embodiment, the first flame cap is a sheet metal part, the first flame cap includes a second cylinder, a third cylinder spaced outside the second cylinder, and an annular connecting portion connecting the ends of the second cylinder and the third cylinder away from the base, the end of the second cylinder away from the annular connecting portion abutting against the gas distributor, the third cylinder connecting to the outer edge of the annular connecting portion, and the baffle plate portion located between the annular connecting portion and the base.

[0035] In one embodiment, the third cylinder has a folded edge structure at one end away from the annular connecting portion, and the folded edge structure is pressed and connected to two opposite sides of the edge portion of the base along its own thickness direction.

[0036] In one embodiment, the base includes a base body and a base sleeve, both of which are sheet metal parts. The base body includes a second ring, a transition connecting part, a fourth cylinder, and a second flange. The second ring is sealed and fitted onto the outer periphery of the base sleeve. The transition connecting part is connected between the outer periphery of the second ring and the end of the fourth cylinder near the first flame hole. The flame distributor is partially fitted onto the outer periphery of the fourth cylinder, and the flame distributor is tightly fitted onto the second flange.

[0037] The second technical problem mentioned above is solved by the following technical solution:

[0038] A gas stove includes at least one burner as described in the foregoing technical solutions.

[0039] The gas stove described in this utility model has the following advantages compared with the prior art:

[0040] By using a burner with good combustion stability at the first burner hole, the combustion stability of the gas stove can be improved. Attached Figure Description

[0041] Figure 1 This is a three-dimensional structural schematic diagram of the burner provided in an embodiment of the present utility model;

[0042] Figure 2 This is a cross-sectional view of the burner provided in an embodiment of the present utility model;

[0043] Figure 3 This is an exploded view of the structure of the gas distribution component provided in an embodiment of the present utility model;

[0044] Figure 4 for Figure 2 Enlarged view of point K;

[0045] Figure 5 for Figure 2 Enlarged view of point L in the middle;

[0046] Figure 6 This is an exploded view of the structure of the second flame cap provided in an embodiment of the present invention;

[0047] Figure 7 A three-dimensional structural schematic diagram of the first flame cap provided in an embodiment of this utility model;

[0048] Figure 8 for Figure 2 Enlarged view of point M in the middle;

[0049] Figure 9 for Figure 2 Enlarged view of point N;

[0050] Figure 10 This is an exploded view of the structure of the base provided in an embodiment of the present utility model;

[0051] Label Explanation:

[0052] 1. Second flame cap; 10. Central axis; 11. Opening; 12. Flame cap seat; 121. First cylindrical part; 121a. Cylindrical body; 121b. Second annular connecting part; 1210. Protrusion; 122. Third annular part; 1220. Second through hole; 13. Flame cap body; 131. Top structure; 1310. Second flame hole; 1311. Flame stabilizing hole; 1312. Flame stabilizing groove; 132. Second cylindrical part;

[0053] 2. Flame distributor; 20. First flame cap; 21. First annular connecting part; 210. First flame hole; 22. Second cylinder; 23. Third cylinder; 24. Folded edge structure;

[0054] 3. Base; 30. Guide surface; 31. Base body; 310. Second annular part; 3101. Clearance through hole; 311. Transition connection part; 312. Fourth cylinder; 313. Second flange; 32. Base sleeve; 320. Second annular groove;

[0055] 4. Air distribution component; 41. Air distribution plate; 410. First annular portion; 4100. Protrusion; 4100a. First flange; 4100b. Air supply through hole; 4101. First part; 4101a. First through hole; 4102. Second part; 411. First cylinder; 42. Air distribution sleeve; 420. First annular groove;

[0056] 5. Central air supply chamber;

[0057] 6. Outer ring air supply chamber;

[0058] 7. Airflow channel;

[0059] 8. Air intake channel;

[0060] 9. Air baffle. Detailed Implementation

[0061] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0062] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0063] 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 technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0064] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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 connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0065] like Figures 1 to 3 As shown, this embodiment proposes a burner, including a base 3, a flame distributor 2, and a baffle plate 9. The flame distributor 2 is connected to the base 3. The top surface of the flame distributor 2 is provided with a plurality of first flame holes 210. The plurality of first flame holes 210 are distributed at intervals around the central axis 10 of the flame distributor 2. The flame distributor 2 and the base 3 form a connected outer ring gas supply chamber 6 and a gas flow channel 7. The outer ring gas supply chamber 6 is connected to the first flame holes 210. The gas flows sequentially through the gas flow channel 7, the outer ring gas supply chamber 6, and the first flame holes 210. The base 3 is also provided with a guide surface 30 facing the gas outlet end of the gas flow channel 7. The guide surface is inclined upward from the side close to the central axis 10 to the side away from the central axis 10. The baffle plate 9 is connected to the flame distributor 2. The baffle plate 9 is located in the outer ring gas supply chamber 6 and is located between the guide surface 30 and the first flame holes 210 facing the guide surface 30 along the extension direction of the central axis 10.

[0066] Specifically, "the top surface of the fire distributor 2" refers to the side surface of the fire distributor 2 away from the base 3 along the extension direction of the central axis 10, and "the top of the fire distributor 2" refers to the end of the fire distributor 2 away from the base 3 along the extension direction of the central axis 10.

[0067] By setting a baffle plate 9 extending towards the inner side of the outer ring gas supply chamber 6 in the flame distributor 2, so that the baffle plate 9 corresponds to the gas outlet end of the gas flow channel 7 and is located between the first flame hole 210 and the guide surface 30, the baffle plate 9 can block the gas flowing from the gas flow channel 7 through the outer ring gas supply chamber 6 to the first flame hole 210, thereby increasing the resistance encountered by the gas when it flows inside the outer ring gas supply chamber 6, reducing the flow velocity of the gas flowing along the guide surface 30 to the first flame hole 210, and thus effectively slowing down the flow velocity of the gas in the outer ring gas supply chamber 6, so that the flame burning at the first flame hole 210 is less likely to have flame lift-off.

[0068] In one embodiment, the baffle plate 9 extends obliquely toward the top surface of the burner 2 in a direction away from the central axis 10. That is, the baffle plate 9 gradually approaches the side where the top surface of the burner 2 is obliquely inclined along the extension direction of the central axis 10 from the part close to the central axis 10 toward the part away from the central axis 10. Thus, while the baffle plate 9 plays a certain role in blocking the gas, it can also guide the gas to flow in an oblique direction relative to the extension direction of the central axis 10 toward the oblique first flame hole 210 on the top surface of the first flame cap 20. This avoids the baffle plate 9 blocking the gas too much, thereby avoiding the situation of poor gas delivery.

[0069] In an optional embodiment, the baffle plate 9 is an annular plate arranged around the central axis 10, so that the baffle plate 9 can block the gas from various positions around the central axis 10. The baffle plate 9 has a good effect in increasing the resistance encountered by the gas when it flows inside the outer ring gas supply chamber 6.

[0070] In another alternative embodiment, the burner has a plurality of baffles 9, which are spaced apart around the central axis 10, thereby allowing for more flexible arrangement of the baffles 9 and adjustment of the spacing between adjacent baffles 9, so as to more flexibly adjust the magnitude of the resistance effect of the baffles 9 on the gas flow inside the outer ring gas supply chamber 6.

[0071] In one embodiment, the base 3 also has an air inlet channel 8, and an outer ring air supply chamber 6 is spaced around the outer periphery of the air inlet channel 8. Multiple air flow channels 7 are formed between the air distribution component 4 and the base 3. The multiple air flow channels 7 are spaced around the central axis 10, and the air inlet ends of the multiple air flow channels 7 are all connected to the air inlet channel 8. Thus, the gas output from the air inlet channel 8 can be diverted through the multiple air flow channels 7 to reduce the gas speed and make the gas more evenly dispersed along the radial direction of the burner to flow to the outer ring air supply chamber 6.

[0072] In one embodiment, the flame divider 2 includes a first flame cap 20 and a gas distributor 4. The top surface of the first flame cap 20 is provided with a plurality of first flame holes 210. The base 3 is connected to one side of the first flame cap 20. The gas distributor 4 is disposed between the first flame cap 20 and the base 3. An outer ring gas supply chamber 6 is formed between the gas distributor 4, the first flame cap 20 and the base 3. An airflow channel 7 is formed between the gas distributor 4 and the base 3. A baffle plate 9 is connected to the gas distributor 4. Thus, the flame divider 2 includes multiple separate parts. The overall manufacturing difficulty of the flame divider 2 can be reduced by disassembling the structure of the flame divider 2 into multiple simpler parts.

[0073] In one embodiment, the first flame hole 210 may be an elongated hole, thereby having a larger opening area, which can improve the stability of the gas output at the first flame hole 210 and thus enhance the stability of the flame burning at the first flame hole 210.

[0074] To ensure good gas output stability at the first burner hole 210 and to ensure a reasonable placement area of ​​the first burner hole 210 on the first burner cap 20, preferably, the length of the first burner hole 210 can be in the range of 16mm to 20mm, for example, the length of the first burner hole 210 can be 16mm, 16.5mm, 17mm, 17.5mm, 18mm, 18.5mm, 19mm, 19.5mm or 20mm, etc., and the width of the first burner hole 210 can be in the range of 0.6mm to 1mm, for example, 0.6mm, 0.65mm, 0.7mm, 0.75mm, 0.8mm, 0.85mm, 0.9mm, 0.95mm or 1mm, etc.

[0075] Furthermore, the number of first flame holes 210 is related to the outer diameter of the first flame cap 20. Specifically, the larger the outer diameter of the first flame cap 20, the more first flame holes 210 can be provided. For example, when the outer diameter of the first flame cap 20 is approximately 136 mm, the number of first flame holes 210 provided on the first flame cap 20 can be in the range of 26 to 32. For example, the number of first flame holes 210 provided on the first flame cap 20 can be 26, 27, 28, 29, 30, 31, or 32.

[0076] In the projection plane perpendicular to the central axis 10, the area of ​​the overlapping portion of the orthographic projection of the baffle plate 9 and the orthographic projection of the first flame hole 210 is S1, and the total area of ​​the orthographic projections of the multiple first flame holes 210 is S2. The larger the ratio of area S1 to area S2, S1 / S2, the greater the obstruction effect of the baffle plate 9 on the gas flowing from the base 3 to the first flame hole 210. However, if the ratio of area S1 to area S2, S1 / S2, is too large, it will lead to insufficient gas supply at the first flame hole 210. To address the issue of insufficient area, the ratio S1 / S2 of area S1 to area S2 should not be too large. Based on this, in one embodiment, the ratio S1 / S2 of area S1 to area S2 can satisfy: 0.2≤S1 / S2≤0.5. For example, the ratio S1 / S2 of area S1 to area S2 can be 0.2, 0.22, 0.25, 0.27, 0.3, 0.32, 0.35, 0.37, 0.4, 0.42, 0.45, 0.47 or 0.5, etc.

[0077] In one embodiment, the burner 2 further includes a second burner cap 1, with a first burner cap 20 surrounding the outer periphery of the second burner cap 1. The second burner cap 1 is provided with a second burner hole 1310. A central gas supply chamber 5 is formed between the gas distributor 4 and the second burner cap 1, which communicates with the second burner hole 1310. This allows the central gas supply chamber 5 to be independent from the outer ring gas supply chamber 6, and gas can be supplied to the second burner hole 1310 through the central gas supply chamber 5, so that combustion can be formed at the second burner hole 1310 to form a central flame, thereby enabling a combustion flame to be formed in the center of the burner.

[0078] In one embodiment, the gas distribution component 4 includes a gas distribution plate 41 and a gas distribution sleeve 42. Both the gas distribution plate 41 and the gas distribution sleeve 42 are sheet metal parts. Thus, on the one hand, the surfaces of the gas distribution plate 41 and the gas distribution sleeve 42 are relatively smooth, which can reduce the possibility of gas forming eddies near the surfaces of the gas distribution plate 41 and the gas distribution sleeve 42. On the other hand, the gas distribution plate 41 and the gas distribution sleeve 42 use less material and are easier to form, which can reduce the manufacturing cost of the gas distribution component 4.

[0079] Since the air distribution sleeve 42 not only serves to separate the space to isolate the central air supply chamber 5 from the outer ring air supply chamber 6, but also supports the structure of the air distribution plate 41, the thickness of the air distribution sleeve 42 can be greater than the thickness of the air distribution plate 41. This makes the structural strength of the air distribution sleeve 42 better, while the structural strength of the air distribution plate 41 can meet the usage requirements, and the material cost of the air distribution plate 41 is lower.

[0080] In one embodiment, the gas distribution sleeve 42 can be manufactured from sheet metal material with a thickness in the range of 1mm to 2mm. For example, the thickness of the sheet metal material used in the gas distribution sleeve 42 can be 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm or 2mm, etc.

[0081] In one embodiment, the air distribution plate 41 can be manufactured using sheet metal material with a thickness in the range of 0.5mm to 0.7mm. For example, the thickness of the sheet metal material used in the air distribution plate 41 can be 0.5mm, 0.52mm, 0.55mm, 0.57mm, 0.6mm, 0.62mm, 0.65mm, 0.67mm, or 0.7mm, etc.

[0082] Please combine Figure 4 As shown, in one embodiment, the gas distribution plate 41 may include a first annular portion 410 and a first cylinder 411. The first annular portion 410 is sleeved and sealed to the outer periphery of the gas distribution sleeve 42, and the first cylinder 411 surrounds and is connected to the outer periphery of the first annular portion 410. The baffle plate 9 is integrally connected to the first cylinder 411. The second burner cap 1 is also provided with an opening 11 communicating with the second burner hole 1310 on the side near the base 3. The first annular portion 410 abuts against the second burner cap 1 at the opening 11, so that the interior of the gas distribution sleeve 42 is connected to the interior of the second burner cap 1 through the opening 11 to form a central gas supply chamber 5. Thus, the possibility of gas in the central gas supply chamber 5 leaking out through the gap between the first annular portion 410 and the second burner cap 1 at the opening 11 can be reduced by the first annular portion 410 abutting against the second burner cap 1 at the opening 11.

[0083] In one embodiment, the first annular portion 410 is provided with a protrusion 4100 protruding toward the base 3. In other words, the protrusion 4100 protrudes toward the interior of the outer annular gas supply cavity 6, thereby reducing the flow path of the outer annular gas supply cavity 6 between the first annular portion 410 and the base 3 through the protrusion 4100, so as to limit the total amount of gas that can be transported by the outer annular gas supply cavity 6 between the first annular portion 410 and the base 3, so that after the gas flows from between the first annular portion 410 and the base 3 to between the first cylinder 411 and the base 3, the flow rate of the gas is slower due to the smaller total amount of gas.

[0084] It is understandable that, since the air distribution plate 41 is a sheet metal part, a recess is formed on the side of the first annular portion 410 away from the base 3, corresponding to the protrusion 4100.

[0085] In one embodiment, the gas distribution plate 41 may be provided with multiple protrusions 4100, which are distributed at intervals around the central axis 10. This allows the limiting effect of the protrusions 4100 on the flow path of the outer ring gas supply chamber 6 to be more even along the direction around the central axis 10, so that the flow velocity of the gas to each first burner hole 210 is also more even, thereby resulting in better consistency of combustion effect at each first burner hole 210.

[0086] In one embodiment, the protrusion 4100 abuts against the base 3, thereby the protrusion 4100 can also limit the relative distance between the base 3 and the first annular portion 410 along the extension direction of the central axis 10, making the relative position of the base 3 and the gas distributor 4 more stable, and the gas supply effect of supplying gas to the first flame hole 210 through the outer ring gas supply chamber 6 is also more stable.

[0087] At this point, it is understood that the airflow channel 7 described in the aforementioned technical solution is formed between two adjacent convex bulges 4100, while the partial outer ring air supply cavity 6 described in the aforementioned technical solution is formed between the first cylinder 411 and the base 3.

[0088] Because the convex 4100 restricts the flow path of the outer ring gas supply cavity 6, the total flow path of the multiple gas channels is small, and the gas flow velocity in the gas channels is relatively fast. Therefore, after the gas enters the annular gas supply cavity from the gas channels, it is necessary to reduce the speed more quickly. Based on this, in one embodiment, at least a baffle plate 9 is provided at the connection between the gas channel and the annular gas supply cavity. The baffle plate 9 can block the gas flowing into the annular gas supply cavity from the gas channels, so as to reduce the speed of the gas entering the annular gas supply cavity more quickly. This allows the gas to fill the annular gas supply cavity better and provides the first burner hole 210 with a more balanced and suitable gas flow rate.

[0089] In one embodiment, the base 3 is provided with a clearance through hole 3101 corresponding to the protrusion 4100 (see [link]). Figure 10The top of the convex bulge 4100 is provided with a gas replenishment hole 4100b, and the top of the convex bulge 4100 is also provided with a first flange 4100a surrounding the gas replenishment hole 4100b. The outer periphery of the first flange 4100a is tightly connected to the wall of the clearance hole 3101. Thus, on the one hand, the relative position of the gas distributor 4 and the base 3 along the direction surrounding the central axis 10 can be restricted by the first flange 4100a cooperating with the clearance hole 3101, thereby improving the assembly accuracy of the base 3 and the gas distributor 4 and improving the stability of the relative position of the base 3 and the gas distributor 4 in the use state, so that the gas supply effect of the gas supply chamber 6 to the first flame hole 210 is more stable. On the other hand, by making the outer periphery of the first flange 4100a abut against the wall of the clearance hole 3101, the relative position of the gas distributor 4 and the base 3 along the direction surrounding the central axis 10 can be restricted, thereby improving the assembly accuracy of the base 3 and the gas distributor 4 and improving the stability of the relative position of the base 3 and the gas distributor 4 in the use state, so that the gas supply effect of the gas supply chamber 6 to the first flame hole 210 is more stable. The hole wall tightly connected to the clearance through hole 3101 can reduce the possibility of gas leakage from the outer ring gas supply chamber 6 between the first flange 4100a and the hole wall of the clearance through hole 3101. On the other hand, this arrangement allows the recess formed on the side of the protrusion 4100 facing the first burner cap 20 to be connected to the external space located below the base 3 through the internal space of the first flange 4100a. Thus, air can flow sequentially through the internal space of the first flange 4100a and the recess formed on the side of the protrusion 4100 facing the first burner cap 20 to the position between the second burner hole 1310 and the first burner hole 210, so as to provide more oxygen for the combustion at the second burner hole 1310 and the first burner hole 210, thereby improving the burner's gas utilization efficiency.

[0090] In one embodiment, the first annular portion 410 has a first portion 4101 and a second portion 4102. The first portion 4101 is an annular sheet. The first portion 4101 abuts against the second burner cap 1 at the opening 11. The second portion 4102 is connected around the outer periphery of the first portion 4101, so that the first portion 4101 can surround the opening 11. When the first portion 4101 abuts against the second burner cap 1 at the opening 11, the effect of blocking gas leakage in the central gas supply chamber 5 is better.

[0091] It is understandable that when the first annular portion 410 is provided with a protrusion 4100 protruding towards the base 3 as described in the aforementioned technical solution, the protrusion 4100 can be provided on the second portion 4102, thereby avoiding the protrusion 4100 from affecting the contact effect between the first portion 4101 and the second fire cap 1.

[0092] In one embodiment, the first part 4101 is provided with a first through hole 4101a, and the second burner cap 1 is also provided with a second through hole 1220 on the outer periphery of the opening 11. The burner also includes a fastener (not shown in the figure), which passes through the first through hole 4101a and the second through hole 1220 and locks the first part 4101 and the second burner cap 1 together. On the one hand, the gas distribution plate 41 and the second burner cap 1 can be locked and fixed together, so that the relative position of the second burner cap 1 and the gas distribution component 4 can be easily kept stable. On the other hand, by applying a locking force to the first part 4101 and the second burner cap 1 through the fastener, the first part 4101 and the second burner cap 1 can be more easily kept in a tight state, so as to maintain a better effect of preventing gas leakage during long-term use.

[0093] Fasteners may include, but are not limited to, combinations of screws, bolts and nuts, and rivets.

[0094] In one embodiment, the outer periphery of the gas distribution sleeve 42 is provided with a first annular groove 420, and the inner ring portion of the first part 4101 is tightly connected to the first annular groove 420. This allows the first annular groove 420 to limit the relative position of the first part 4101 and the gas distribution sleeve 42, making the relative position of the gas distribution sleeve 42 and the gas distribution plate 41 more stable. On the other hand, by tightly connecting the inner ring portion of the first part 4101 to the first annular groove 420, the airtightness between the first part 4101 and the groove wall of the first annular groove 420 is improved, which can reduce the possibility of gas leakage in the central gas supply chamber 5 through the groove wall of the first part 4101 and the first annular groove 420.

[0095] Please see Figures 2 to 6 In one embodiment, the cover includes a second flame cap 1 and a first flame cap 20. The second flame cap 1 is provided with a second flame hole 1310. The first flame cap 20 is arranged around the outer periphery of the second flame cap 1 and is provided with a plurality of first flame holes 210. The base 3 is connected to one side of the first flame cap 20. A gas distribution component 4 and the second flame cap 1 form a central gas supply chamber 5 communicating with the second flame hole 1310. The gas distribution component 4 is disposed between the first flame cap 20 and the base 3. The gas distribution component 4, the first flame cap 20 and the base 3 form an outer ring gas supply chamber 6 communicating with the first flame hole 210. This allows the second flame cap 1 and the first flame cap 20 to form an interval space between the second flame hole 1310 and the first flame hole 210, which is conducive to the flow of air into the interval space to provide oxygen for combustion at the second flame hole 1310 and the first flame hole 210, thereby improving the combustion efficiency of the gas at the second flame hole 1310 and the first flame hole 210.

[0096] In one embodiment, the second flame cap 1 includes a flame cap seat 12 and a flame cap body 13. The flame cap seat 12 is a sheet metal part, and includes a first cylindrical portion 121 and a third annular portion 122. The third annular portion 122 is connected to one end of the first cylindrical portion 121 near the base 3 and abuts against the gas distributor 4. The flame cap body 13 includes a top structure 131 and a second cylindrical portion 132. A second flame hole 1310 is provided on the top structure 131. The first cylindrical portion 121 abuts against the end of the first cylindrical portion 121 away from the third annular portion 122, and the second cylindrical portion 132 is connected to the end of the top structure 131 near the first cylindrical portion 121. The second cylindrical portion 132 is sleeved on the outer periphery of the first cylindrical portion 121. Thus, by having the top structure 131 abut against the end of the first cylindrical portion 121 away from the third annular portion 122, the possibility of gas leakage in the central gas supply chamber 5 through the burner seat 12 and the burner body 13 is reduced.

[0097] In addition, since the burner seat 12 is a sheet metal part, on the one hand, the surface of the burner seat 12 is relatively smooth, which can reduce the possibility of the gas forming eddies near the surface of the burner seat 12. On the other hand, the burner seat 12 uses less material and is easier to form, which can reduce the manufacturing cost of the second burner 1.

[0098] Understandably, the inner ring of the third annular portion 122 is formed as the aforementioned opening 11.

[0099] To ensure the flame cap holder 12 has good structural strength and can stably support the flame cap body 13, while keeping the material cost of the flame cap holder 12 low, in one embodiment, the flame cap holder 12 can be manufactured from sheet metal material with a thickness in the range of 0.5mm to 0.8mm. For example, the thickness of the sheet metal material used for the flame cap holder 12 can be 0.5mm, 0.52mm, 0.55mm, 0.57mm, 0.6mm, 0.62mm, 0.65mm, 0.67mm, 0.7mm, 0.8mm, 0.75mm, 0.77mm, or 0.8mm, etc.

[0100] Since the space available for the second flame hole 1310 on the top structure 131 is smaller than that on the first flame cap 20, the opening area of ​​a single second flame hole 1310 is smaller. The change in gas flow rate has a greater impact on the stability of the flame at the second flame hole 1310, making it prone to flame lift-off or flashback. Therefore, optionally, the thickness of the top structure 131 at least in some places is greater than the maximum thickness of the flame cap seat 12. In other words, the top structure 131 has a larger thickness, which allows the hole depth of the second flame hole 1310 to be larger, thereby increasing the volume inside the second flame hole 1310. This reduces the impact of gas flow rate on the stability of the total gas volume inside the second flame hole 1310, resulting in better flame combustion stability at the second flame hole 1310.

[0101] In order to make the second flame hole 1310 suitable for being disposed on the top structure 131, and at the same time to make the total opening area of ​​the second flame hole 1310 on the top structure 131 large, in one embodiment, the diameter of the second flame hole 1310 can be in the range of 2mm to 2.4mm. For example, the diameter of the second flame hole 1310 can be 2mm, 2.05mm, 2.1mm, 2.15mm, 2.2mm, 2.25mm, 2.3mm, 2.35mm or 2.4mm, etc.

[0102] In one embodiment, the outer periphery of the top structure 131 is further provided with a plurality of flame stabilizing holes 1311 and flame stabilizing grooves 1312. The plurality of flame stabilizing holes 1311 are distributed at intervals around the central axis 10, and all the flame stabilizing holes 1311 are located at intervals on the side of the second flame hole 1310 near the base 3. The flame stabilizing grooves 1312 are arranged around the central axis 10 and are connected to all the flame stabilizing holes 1311. Thus, on the one hand, the flame stabilizing grooves 1312 can be used to make the gas supply at each flame stabilizing hole 1311 more balanced, so that each The flame generated at the flame stabilizer 1311 is more stable. On the other hand, the flame generated at each flame stabilizer 1311 can be used to continuously and stably heat the vicinity of the second flame hole 1310. So that after the flame at the second flame hole 1310 is extinguished due to flame instability, when the second flame hole 1310 receives sufficient gas supply again, the heat generated by the flame at the flame stabilizer 1311 can be used to reignite the gas, so that the second flame hole 1310 can generate a flame again.

[0103] In one embodiment, the first cylindrical portion 121 is provided with a plurality of protrusions 1210 protruding outwards. The plurality of protrusions 1210 are distributed at intervals around the central axis 10. The protrusions 1210 abut against the inner wall surface of the second cylindrical portion 132. This can improve the connection stability between the first cylindrical portion 121 and the second cylindrical portion 132, so that the relative position of the first cylindrical portion 121 and the second cylindrical portion 132 remains stable during the use of the burner. On the other hand, since the part of the first cylindrical portion 121 other than the protrusions 1210 is in clearance fit with the second cylindrical portion 132, in other words, the effective connection area between the first cylindrical portion 121 and the second cylindrical portion 132 is small. Therefore, when combustion occurs near the second burner hole 1310, the noise generated when the first cylindrical portion 121 and the second cylindrical portion 132 rub against each other due to thermal expansion and contraction caused by heat is small.

[0104] It is understandable that, since the flame cap seat 12 is a sheet metal part, a recess is formed on the inner side of the first cylindrical portion 121 corresponding to the protrusion 1210.

[0105] In one embodiment, the first cylindrical portion 121 may specifically include a plurality of cylindrical bodies 121a arranged sequentially along the extension direction of the central axis 10 and a second annular connecting portion 121b connecting two adjacent cylindrical bodies 121a, thereby enabling flexible adjustment of the flow path of the first cylindrical portion 121 at different positions along the extension direction of the central axis 10.

[0106] In one embodiment, the diameter of the plurality of cylinders 121a gradually increases from the direction away from the burner cap body 13 towards the direction closer to the burner cap body 13, thereby gradually increasing the flow path of the first cylindrical portion 121. This causes the gas flow velocity in the central gas supply chamber 5 to gradually decrease as it flows towards the second flame hole 1310, thereby reducing the possibility of flame lift-off at the second flame hole 1310 and improving the combustion stability of the flame at the second flame hole 1310. For example, Figure 5 and Figure 6 As shown, Figure 5 and Figure 6 The example shows a first cylindrical portion 121 including two cylindrical bodies 121a arranged sequentially along the extension direction of the central axis 10 and a second annular connecting portion 121b connecting the two cylindrical bodies 121a. The diameter of one cylindrical body 121a closer to the flame cap body 13 is larger than the diameter of the other cylindrical body 121a farther from the flame cap body 13, and the second cylindrical portion 132 is sleeved on the outer periphery of the cylindrical body 121a closer to the flame cap body 13.

[0107] Please see Figure 2 , Figure 3 , Figure 7 as well as Figure 8 In one embodiment, the first flame cap 20 is a sheet metal part. Thus, on the one hand, the surface of the first flame cap 20 is relatively smooth, which can reduce the possibility of gas forming eddies near the surface of the first flame cap 20. On the other hand, the first flame cap 20 uses less material and is easier to form, which can reduce the manufacturing cost of the first flame cap 20.

[0108] To ensure the first flame cap 20 has good structural strength and can withstand certain external impact forces, while keeping the material cost of the first flame cap 20 low, in one embodiment, the first flame cap 20 can be manufactured from sheet metal material with a thickness in the range of 0.5mm to 0.8mm. For example, the thickness of the sheet metal material used for the first flame cap 20 can be 0.5mm, 0.52mm, 0.55mm, 0.57mm, 0.6mm, 0.62mm, 0.65mm, 0.67mm, 0.7mm, 0.8mm, 0.75mm, 0.77mm, or 0.8mm, etc.

[0109] In one embodiment, the first flame cap 20 includes a first annular connecting portion 21, a second cylinder 22, and a third cylinder 23. A first flame hole 210 is provided in the first annular connecting portion 21. The second cylinder 22 and the third cylinder 23 are both located on the side of the first annular connecting portion 21 near the base 3. The second cylinder 22 is connected to the inner edge of the first annular connecting portion 21. The end of the second cylinder 22 away from the first annular connecting portion 21 is pressed against the gas distributor 4. The third cylinder 23 is connected to the outer edge of the first annular connecting portion 21. The end of the third cylinder 23 away from the first annular connecting portion 21 is provided with a folded edge structure 24. The folded edge structure 24 is pressed and connected to the edge portion of the base 3 along its own thickness direction on two opposite sides. Thus, a partial outer annular gas supply chamber 6 can be formed between the first annular connecting portion 21, the second cylinder 22, the third cylinder 23, and the gas distributor 4. It is not easy for air to leak between the second cylinder 22 and the gas distributor 4 and between the third cylinder 23 and the base 3.

[0110] Please see Figure 2 , Figure 8 , Figure 9 as well as Figure 10 In one embodiment, the base 3 includes a base body 31 and a base sleeve 32. Both the base body 31 and the base sleeve 32 are sheet metal parts. Thus, on the one hand, the surfaces of the base body 31 and the base sleeve 32 are relatively smooth, which can reduce the possibility of gas forming eddies near the surfaces of the base body 31 and the base sleeve 32. On the other hand, the base body 31 and the base sleeve 32 use less material and are easier to form, which can reduce the manufacturing cost of the base 3.

[0111] Since the base sleeve 32 not only serves to separate the space to isolate the outer ring air supply chamber 6 from the external space, but also supports the structure of the base body 31, the thickness of the base sleeve 32 can be greater than the thickness of the base body 31, so that the structural strength of the base sleeve 32 is better, while the structural strength of the base body 31 can meet the usage requirements, and the material cost of the base body 31 is lower.

[0112] In one embodiment, the base sleeve 32 can be manufactured from sheet metal material with a thickness in the range of 1mm to 2mm. For example, the thickness of the sheet metal material used for the base sleeve 32 can be 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm or 2mm, etc.

[0113] In one embodiment, the base body 31 can be manufactured using sheet metal material with a thickness in the range of 0.5mm to 0.7mm. For example, the thickness of the sheet metal material used for the base body 31 can be 0.5mm, 0.52mm, 0.55mm, 0.57mm, 0.6mm, 0.62mm, 0.65mm, 0.67mm or 0.7mm, etc.

[0114] In one embodiment, a second annular groove 320 is provided on the outer periphery of the base sleeve 32, and the base body 31 is tightly connected to the second annular groove 320. On the one hand, the relative position of the base body 31 and the base sleeve 32 can be limited by the second annular groove 320, so that the relative position of the base sleeve 32 and the base body 31 is more stable. On the other hand, by tightly connecting the inner ring of the base body 31 to the second annular groove 320, the airtightness between the base body 31 and the groove wall of the second annular groove 320 can be better, which can reduce the possibility of gas leakage in the outer annular gas supply chamber 6 through the groove wall of the base body 31 and the second annular groove 320.

[0115] In one embodiment, the base body 31 includes a second annular portion 310, a transition connecting portion 311, a fourth cylinder 312, and a second flange 313. The second annular portion 310 is sealed and sleeved on the outer periphery of the base sleeve 32. The transition connecting portion 311 connects the outer periphery of the second annular portion 310 and the end of the fourth cylinder 312 near the first flame hole 210. The first flame cap 20 is partially fitted on the outer periphery of the fourth cylinder 312 and is tightly fitted to the second flange 313. Thus, the base sleeve 32 can communicate with the space formed between the base body 31 and the first flame cap 20 to form an outer annular gas supply chamber 6. The relative posture of the first flame cap 20 and the base body 31 can be restricted by the first flame cap 20 being partially fitted on the outer periphery of the fourth cylinder 312. The second flange 313 on the base 3 facilitates the tight fitting of the first flame cap 20.

[0116] As described in the aforementioned technical solution, when the convex hull 4100 abuts against the base 3, it can be understood that the convex hull 4100 abuts against the second annular portion 310.

[0117] Please combine Figure 3 As shown, when the base 3 is provided with an avoidance through hole 3101 corresponding to the protrusion 4100 as described in the aforementioned technical solution, it can be understood that the avoidance through hole 3101 is provided in the second annular portion 310.

[0118] When the first flame cap 20 includes a third cylinder 23 as described in the aforementioned technical solution, it is understood that the third cylinder 23 is fitted around the outer periphery of the fourth cylinder 312.

[0119] When the first flame cap 20 is provided with a folded edge structure 24 as described in the aforementioned technical solution, it can be understood that the folded edge structure 24 is pressed and connected to the two opposite sides of the second flange 313 along its own thickness direction.

[0120] This embodiment also proposes a gas stove, including at least one burner as described in the aforementioned technical solution. By using a burner with good combustion stability at the aforementioned first fire hole 210, the combustion stability of the gas stove can be improved.

[0121] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0122] The specific embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A burner, characterized in that, include: Base (3); The flame distributor (2) is connected to the base (3). The top surface of the flame distributor (2) is provided with a plurality of first flame holes (210). The plurality of first flame holes (210) are distributed at intervals around the central axis (10) of the flame distributor (2). The flame distributor (2) and the base (3) form a connected outer ring gas supply chamber (6) and a gas flow channel (7). The outer ring gas supply chamber (6) is connected to the first flame holes (210). The gas flows through the gas flow channel (7), the outer ring gas supply chamber (6) and the first flame holes (210) in sequence. The base (3) is also provided with a guide surface (30) facing the air outlet end of the airflow channel (7), and the guide surface (30) is inclined upward from the side close to the central axis (10) to the side away from the central axis (10); as well as, A baffle plate (9) is connected to the flame distributor (2). The baffle plate (9) is located inside the outer ring air supply chamber (6) and between the guide surface (30) and the first flame hole (210) that is directly opposite to the guide surface (30) along the extension direction of the central axis (10).

2. The burner according to claim 1, characterized in that, The air baffle (9) extends obliquely toward the top surface of the fire distributor (2) in a direction away from the central axis (10).

3. The burner according to claim 1, characterized in that, The base (3) also has an air intake channel (8), the outer ring air supply chamber (6) is spaced around the outer periphery of the air intake channel (8), the flame distributor (2) and the base (3) form a plurality of air flow channels (7), the plurality of air flow channels (7) are spaced around the central axis (10), and the air intake ends of the plurality of air flow channels (7) are all connected to the air intake channel (8).

4. The burner according to claim 3, characterized in that, The air baffle (9) is an annular plate, and the air baffle (9) is arranged around the central axis (10); or, The burner has a plurality of baffles (9) that are spaced apart around the central axis (10).

5. The burner according to any one of claims 1-4, characterized in that, The first fire hole (210) is an elongated hole, and / or, in the projection plane perpendicular to the central axis (10), the overlapping area of ​​the orthographic projection of the baffle plate (9) and the orthographic projection of the first fire hole (210) is S1, and the total orthographic projection area of ​​the plurality of first fire holes (210) is S2, 0.2≤S1 / S2≤0.

5.

6. The burner according to any one of claims 1-4, characterized in that, The flame divider (2) includes a first flame cap (20) and a gas distribution component (4). The top surface of the first flame cap (20) is provided with a plurality of first flame holes (210). The base (3) is connected to one side of the first flame cap (20). The gas distributor (4) is disposed between the first flame cap (20) and the base (3). The gas distributor (4), the first flame cap (20) and the base (3) form the outer ring gas supply chamber (6). The gas distributor (4) and the base (3) form the airflow channel (7). The baffle plate (9) is connected to the gas distributor (4).

7. The burner according to claim 6, characterized in that, The flame distributor (2) also includes a second flame cap (1), the first flame cap (20) is arranged around the outer periphery of the second flame cap (1), the second flame cap (1) is provided with a second flame hole (1310), and the gas distributor (4) and the second flame cap (1) form a central gas supply chamber (5) communicating with the second flame hole (1310).

8. The burner according to claim 7, characterized in that, The air distribution component (4) includes an air distribution plate (41) and an air distribution sleeve (42), both of which are sheet metal parts; The air distribution plate (41) includes a first ring (410) and a first cylinder (411). The first ring (410) is sleeved and sealed to the outer periphery of the air distribution sleeve (42). The first cylinder (411) surrounds and is connected to the outer periphery of the first ring (410). The baffle plate (9) is integrally connected to the first cylinder (411). The second flame cap (1) is also provided with an opening (11) connected to the second flame hole (1310) on the side near the base (3). The first ring (410) partially abuts against the second flame cap (1) at the opening (11), so that the interior of the gas distribution sleeve (42) is connected to the interior of the second flame cap (1) through the opening (11) to form the central gas supply chamber (5).

9. The burner according to claim 8, characterized in that, The second flame cap (1) includes a flame cap seat (12) and a flame cap body (13). The flame cap seat (12) is a sheet metal part. The flame cap seat (12) includes a first cylindrical part (121) and a third annular part (122). The third annular part (122) is connected to one end of the first cylindrical part (121) near the base (3). The third annular part (122) abuts against the gas distributor (4). The flame cap body (13) includes a top structure (131) and a second cylindrical part (132). The second flame hole (1310) is located on the top structure (131). (131) Abuts against the end of the first cylindrical part (121) away from the third annular part (122), the second cylindrical part (132) is connected to the end of the top structure (131) near the first cylindrical part (121), and the second cylindrical part (132) is sleeved on the outer periphery of the first cylindrical part (121). The first cylindrical part (121) is provided with a plurality of protrusions (1210) protruding towards its own outer periphery. The plurality of protrusions (1210) are distributed at intervals around the central axis (10). The protrusions (1210) abut against the inner wall surface of the second cylindrical part (132).

10. The burner according to claim 6, characterized in that, The first flame cap (20) is a sheet metal part. The first flame cap (20) includes a second cylinder (22), a third cylinder (23) spaced outside the second cylinder (22), and a first annular connecting part (21) connecting the second cylinder (22) and the third cylinder (23) at the end away from the base (3). The end of the second cylinder (22) away from the first annular connecting part (21) abuts against the gas distributor (4). The third cylinder (23) is connected to the outer edge of the first annular connecting part (21). The baffle plate (9) is located between the first annular connecting part (21) and the base (3).

11. The burner according to any one of claims 1-4, characterized in that, The base (3) includes a base body (31) and a base sleeve (32). Both the base body (31) and the base sleeve (32) are sheet metal parts. The base body (31) includes a second ring (310), a transition connection part (311), a fourth cylinder (312), and a second flange (313). The second ring (310) is sealed and fitted around the outer periphery of the base sleeve (32). The transition connection part (311) is connected between the outer periphery of the second ring (310) and the end of the fourth cylinder (312) near the first fire hole (210). The flame distributor (2) is partially fitted around the outer periphery of the fourth cylinder (312), and the flame distributor (2) is tightly fitted to the second flange (313).

12. A gas stove, characterized in that, It includes at least one burner as described in any one of claims 1-11.

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