Burner flame cap and burner comprising same

Abstract

The application discloses a burner fire cover and a burner comprising the same. The burner fire cover is arranged on a burner base. A flame stabilizing structure is arranged on the burner fire cover. The flame stabilizing structure comprises a decelerating part arranged in a spiral shape and extending from a side surface of the burner fire cover close to the burner base to the direction of the burner base. The decelerating part comprises a plurality of decelerating sheets arranged in sequence and at intervals along the extending direction of the decelerating part. An air outlet channel for the flow of fuel gas is arranged between adjacent decelerating sheets. The angle between the side surface of the decelerating sheet close to the burner base and the horizontal direction is greater than the angle between the side surface of the decelerating sheet away from the burner base and the horizontal direction. The density of the fuel gas is used to increase the path of the fuel gas discharged from the burner fire cover according to the buoyancy effect, so that the flow rate of the fuel gas discharged from the burner fire cover is effectively slowed down, and the flame stabilizing effect of the burner is maximally improved.

Description

Technical Field

[0001] This invention relates to gas stoves, and more particularly to a burner cap and a burner including the burner cap. Background Technology

[0002] In existing gas stoves, the burner cap experiences flame detachment when exposed to high-pressure, high-velocity gas. Current technologies typically address this by increasing the number of burner holes or adding annular slits to the burner cap to improve flame stabilization. However, these methods are not entirely effective at stabilizing the flame.

[0003] Therefore, the problem of flame stabilization urgently needs to be solved. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defect of poor flame stabilization effect of burners in the prior art, and to provide a burner cap and a burner including the same.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] A burner cap is disposed on a burner base, and a flame stabilizing structure is provided on the burner cap.

[0007] The flame stabilizing structure includes a speed reduction component that extends from the side surface of the burner cap near the burner base toward the burner base and is spiral in shape;

[0008] The speed reducer includes a plurality of speed reducers arranged at intervals along the extension direction of the speed reducer. An exhaust channel for gas flow is provided between adjacent speed reducers. Furthermore, the angle between the surface of the speed reducer closest to the burner base and the horizontal direction is greater than the angle between the surface of the speed reducer away from the burner base and the horizontal direction.

[0009] In this technical solution, by setting a spiral-shaped speed reducer on the burner cap and adopting this structural form for the speed reducer plates, the gas is discharged from the outlet channel between adjacent speed reducers due to the inclination between the lower and upper surfaces of the speed reducers and the horizontal line. This causes the gas to be discharged towards one side of the burner base. Since the density of gas is less than that of air, the gas will be subject to buoyancy and gradually discharged from the burner cap. This method of utilizing the density of gas and the buoyancy it experiences to lengthen the path of gas discharge from the burner cap can effectively slow down the flow rate of gas when it is discharged from the burner cap, ensuring that the gas can be discharged more evenly and that the gas can be fully mixed with air. This maximizes the flame stabilization effect of the burner, fundamentally ensuring the stability of combustion, reducing flame fluctuations, and ensuring the normal operation and safety of the burner.

[0010] Preferably, the speed reducer is wedge-shaped, and along the extension direction perpendicular to the speed reducer, the end of the speed reducer away from the air outlet channel is constricted.

[0011] In this technical solution, this structural form expands the flow range of the gas when it is discharged from the gas outlet channel. Specifically, the gas passes through the wedge-shaped amplified deceleration plate inside the spiral deceleration component, causing the gas to be emitted spirally from the center to the surrounding areas. According to Bernoulli's principle, the gas flow velocity will decrease on the outer wall with a larger opening, thereby enhancing the stability of the gas flow.

[0012] Preferably, the burner cap includes a top cover and an annular body disposed between the top cover and the burner base and extending in the same direction as the speed reducer. The burner cap covers the burner base and forms a mixing chamber. A gas passage is provided through the annular body to communicate the mixing chamber and the outside for gas flow.

[0013] In this technical solution, the annular body of the burner cap and the gas passage passing through it can connect the mixing chamber and the outside, providing a channel for gas flow. This allows the gas to flow smoothly from the mixing chamber to the outside, ensuring the normal emission of the burner gas and thus ensuring the normal operation of the burner.

[0014] Preferably, the gas passage includes a flame stabilizing orifice and a main burner orifice.

[0015] Along the height direction of the burner cap, the flame stabilizing orifice is located above the main flame port and near the top cap.

[0016] In this technical solution, the gas passage adopts this structural form. This layout can improve the combustion stability and thermal equilibrium performance of the burner. The flame-stabilizing orifices can provide a finer flame during combustion, making the gas combustion more uniform and stable. Simultaneously, it further enhances the flame stabilization effect of the burner. Furthermore, the flame-stabilizing orifices can also increase the mixing and diffusion of gas and air, thereby improving combustion efficiency and the energy utilization efficiency of the burner.

[0017] Preferably, the upper surface of the main flame hole near the top cover has a sloping structure, and the upper surface of the main flame hole extends outward from the position near the mixing chamber and in the direction of the flame stabilizing hole.

[0018] In this technical solution, the sloping structure and inclined design of the main burner orifice improves the flow and mixing of the combustion gas, allowing for better mixing of gas and air and the formation of a more stable combustion flame. Furthermore, the sloping structure and inclined design alter the gas flow path, enabling more uniform gas flow and discharge within the mixing chamber, thereby improving the burner's thermal equilibrium performance and preventing overheating or uneven cooling caused by flame concentration in a specific area. Simultaneously, the inclined design prevents gas from flowing back into the main burner orifice from the flame stabilizing orifice, reducing backflow and increasing the residence time of gas at the flame stabilizing orifice, thus improving combustion efficiency. Finally, this open-type burner orifice structure avoids and reduces clogging, and even if the main burner orifice becomes clogged, it can be easily cleaned, ensuring the normal operation of the burner.

[0019] Preferably, there are multiple flame-stabilizing holes, and the multiple flame-stabilizing holes are arranged at intervals along the circumferential direction of the annular body.

[0020] And / or, the number of main flame holes is multiple, and the multiple main flame holes are arranged sequentially at intervals along the circumferential direction of the annular body.

[0021] In this technical solution, the spaced arrangement of multiple flame-stabilizing orifices and main burner orifices allows for a more uniform distribution of gas flow, resulting in more uniform combustion and improved combustion efficiency. Furthermore, the multiple flame-stabilizing orifices provide more gas outlets, making the combustion flame more stable. Simultaneously, the multiple main burner orifices increase flame stability through multi-point combustion, reducing the possibility of flame extinction. In addition, the spaced arrangement of the multiple flame-stabilizing orifices and main burner orifices improves thermal equilibrium performance, resulting in a more uniform temperature distribution in the burner and preventing localized overheating or insufficient cooling.

[0022] Preferably, there are multiple main flame holes, and the multiple main flame holes are arranged at intervals along the circumferential direction of the annular body;

[0023] The flame stabilizing structure also includes a flame stabilizing groove disposed between adjacent main fire holes. A flame stabilizing wall is provided on the annular body, extending obliquely from the mixing chamber toward the flame stabilizing hole. The flame stabilizing wall and the inner wall surface of the annular body form the flame stabilizing groove. The air inlet of the flame stabilizing groove is connected to the mixing chamber.

[0024] In this technical solution, by adding a flame stabilizing wall and forming a flame stabilizing groove, the gas flows from the inside of the mixing chamber to the outside, passes through the flame stabilizing wall, and impacts the inner wall of the annular body. This reduces the flow velocity of the gas and changes its flow direction, allowing the gas to be discharged from the inside of the burner cap to the outside, forming a stable flame. This design increases the flow path of the gas from the mixing chamber to the outside, reduces the gas velocity, and makes the mixing of gas and air more complete. This allows the gas to be discharged from the mixing chamber more evenly, resulting in a more stable flame in the burner, improving the flame stabilizing effect of the flame stabilizing groove, and preventing the possibility of flame lift-off.

[0025] Preferably, the inclination angle of the partition plate separating the main flame hole and the flame stabilizing groove is greater than the inclination angle of the connecting surface where the burner base and the annular body connect, so that an annular slit flame stabilizing structure is formed at the connection between the annular body and the burner base.

[0026] In this technical solution, the tilt angle of the partition plate is greater than the tilt angle of the connection surface between the burner cap and the burner base, so that an annular seam flame stabilizing structure is formed at the connection to slow down the gas flow rate. This design can enhance the flame stabilizing effect and make the combustion flame more stable.

[0027] A burner comprising a burner cap as described in any of the above claims and a burner base, the burner cap being disposed on the burner base.

[0028] In this technical solution, this structural form can effectively reduce the flow rate of gas when it is discharged from the burner cap, ensuring that the gas can be discharged more evenly from the burner base, maximizing the flame stabilization effect of the burner, reducing flame fluctuations, and ensuring the normal operation and safety of the burner.

[0029] Preferably, the burner cap is an inner ring cap, the burner base is an inner ring base, the inner ring cap is disposed on the inner ring base and forms an inner ring mixing chamber, and the speed reduction component is disposed in the inner ring mixing chamber.

[0030] In this technical solution, this structural form is adopted to address the issue of inner-ring combustion. It not only improves the flame stabilization effect at the inner ring base, increasing combustion efficiency and minimizing the possibility of flame lift-off, thus enhancing combustion stability, but also, compared to placing the burner cap on the larger outer ring cap, using an inner ring cap facilitates manual cleaning, improving burner maintenance and cleaning efficiency and ensuring normal burner operation. Furthermore, the reduction gear within the inner ring mixing chamber balances the gas flow velocity, reducing eddies and turbulence, thereby lowering noise and vibration during burner operation and improving user comfort.

[0031] Preferably, at least a portion of the speed reduction component is embedded in the burner base.

[0032] In this technical solution, by embedding the speed reducer at least partially into the base, the number of gas outlet channels is increased, thereby expanding the range of the speed reducer's effect on slowing the gas flow velocity and maximizing the flame stabilization effect of the speed reducer. Furthermore, it enhances the overall structural stability of the burner cap, preventing the burner cap from loosening and detaching from the burner base.

[0033] The positive and progressive effects of this invention are as follows:

[0034] 1. This burner cap incorporates a spiral-shaped speed reducer with speed reduction plates. This design allows the gas to be discharged from the outlet channel between adjacent speed reduction plates. The inclined action of the lower and upper surfaces of the speed reduction plates relative to the horizontal line causes the gas to be discharged towards one side of the burner base. Because the density of gas is less than that of air, the gas is subject to buoyancy and gradually exits from the burner cap. This method, utilizing the gas density and buoyancy to lengthen the path of the gas exiting the burner cap, effectively slows down the flow rate of the gas exiting the burner cap, ensuring more uniform gas discharge and thorough mixing with air. This maximizes the flame stabilization effect of the burner, fundamentally guaranteeing combustion stability, reducing flame fluctuations, and ensuring the normal operation and safety of the burner.

[0035] 2. This burner can effectively slow down the flow rate of gas when it is discharged from the burner cap, ensuring that the gas can be discharged more evenly from the burner base, maximizing the flame stabilization effect of the burner, reducing flame fluctuations, and ensuring the normal operation and safety of the burner. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the burner cap of Embodiment 1 of the present invention.

[0037] Figure 2 This is a front view of the burner cap of Embodiment 1 of the present invention.

[0038] Figure 3 This is a cross-sectional view of the burner cap according to Embodiment 1 of the present invention.

[0039] Figure 4 This is a schematic diagram of the overall structure of the burner according to Embodiment 2 of the present invention.

[0040] Figure 5 This is a front view of the burner according to Embodiment 2 of the present invention.

[0041] Figure 6 for Figure 5 Enlarged view of part A in the image.

[0042] Explanation of reference numerals in the attached figures:

[0043] Burner cap 100

[0044] Speed ​​reducer 11

[0045] Speed ​​reducer 111

[0046] Exhaust channel 112

[0047] Top cover 12

[0048] Annular body 13

[0049] Flame Stabilizer 131

[0050] Gas passage 14

[0051] Flame Stabilizer Orifice 141

[0052] Main fire port 142

[0053] Flame Stabilizer 143

[0054] Divider 15

[0055] 16 Circumferential seam flame stabilizing structure

[0056] Burner base 200

[0057] Mixing chamber 21

[0058] Burner 300

[0059] The angle α between the upper surface of the speed reducer and the horizontal plane

[0060] The angle β between the lower surface of the speed reducer and the horizontal plane Detailed Implementation

[0061] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments.

[0062]

Example 1

[0063] like Figures 1-3 As shown, Embodiment 1 discloses a burner cover 100 that is installed on a burner base 200.

[0064] The burner cap 100 is provided with a flame stabilizing structure, which includes a spiral-shaped speed reduction member 11. The speed reduction member 11 extends from the side surface of the burner cap 100 near the burner base 200 toward the burner base 200.

[0065] Meanwhile, the speed reducer 11 includes a plurality of speed reducers 111 arranged sequentially at intervals along the extending direction of the speed reducer 11. An outlet passage 112 for gas flow is provided between adjacent speed reducers 111. Furthermore, the angle between the surface of the speed reducer 111 closest to the burner base 200 and the horizontal direction is greater than the angle between the surface of the speed reducer 111 facing away from the burner base 200 and the horizontal direction. Specifically, for example... Figure 3 As shown, along the extending direction of the reducer 11, the angle β between the lower surface of the reducer and the horizontal plane is greater than the angle α between the upper surface of the reducer and the horizontal plane.

[0066] In this embodiment, by providing a spiral-shaped speed reducer 11 on the burner cap 100 and adopting this structural form for the speed reducer plates 111 on the speed reducer 11, when the gas is discharged from the outlet channel 112 between adjacent speed reducer plates 111, it is subject to the inclination between the lower and upper surfaces of the speed reducer plates 111 and the horizontal line, causing the gas to be discharged towards one side of the burner base 200. Since the density of the gas is less than that of air, the gas will be subject to buoyancy and gradually discharged from the burner cap 100. This method of utilizing the density of the gas and the buoyancy it receives to lengthen the path of the gas discharged from the burner cap 100 can effectively slow down the flow rate of the gas when it is discharged from the burner cap 100, ensuring that the gas can be discharged more evenly, allowing the gas to be fully mixed with air, thereby maximizing the flame stabilization effect of the burner 300, fundamentally ensuring the stability of combustion, reducing flame fluctuations, and ensuring the normal operation and safety of the burner 300.

[0067] Furthermore, such as Figures 1-3 As shown, the speed reducer 111 has a wedge-shaped structure, and along the extension direction perpendicular to the speed reducer 11, the end of the speed reducer 111 away from the air outlet channel 112 is constricted.

[0068] This structural design expands the gas flow range when the gas is discharged from the gas outlet 112. Specifically, the gas passes through the wedge-shaped amplified deceleration plate 111 inside the spiral deceleration member 11, causing the gas to be emitted spirally from the center to the surrounding areas. According to Bernoulli's principle, the gas flow velocity will decrease on the outer wall with a larger opening, thereby enhancing the stability of the gas flow.

[0069] Preferably, such as Figures 1-3 As shown, the burner cap 100 includes a top cover 12 and an annular body 13. The annular body 13 is disposed between the top cover 12 and the burner base 200 and is aligned with the extension direction of the speed reduction member 11.

[0070] Furthermore, the burner cap 100 is placed on the burner base 200 and forms a mixing chamber 21 inside the burner base 200. A gas passage 14 is provided through the annular body 13 to connect the mixing chamber 21 and the outside for gas flow, thus providing a channel for gas flow and allowing gas to flow smoothly from the mixing chamber 21 to the outside, ensuring the normal emission of gas from the burner 300, thereby ensuring the normal operation of the burner 300.

[0071] Specifically, the gas passage 14 includes a flame stabilizing hole 141 and a main flame hole 142. Furthermore, along the height direction of the burner cap 100, the flame stabilizing hole 141 is located above the main flame hole 142 and near the top cap 12.

[0072] In this embodiment, the gas passage 14 adopts this structural form. This layout can improve the combustion stability and thermal equilibrium performance of the burner 300. The flame stabilizing orifice 141 can provide a finer flame during combustion, making the gas combustion more uniform and stable. At the same time, it can further achieve the flame stabilization function of the burner 300. In addition, the flame stabilizing orifice 141 can also increase the mixing and diffusion of gas and air, thereby improving combustion efficiency and the energy utilization efficiency of the burner 300.

[0073] Preferably, the upper surface of the main flame hole 142 near the top cover 12 has a sloping structure, that is, the upper surface of the main flame hole 142 extends outward from the position near the mixing chamber 21 and towards the flame stabilizing hole 141.

[0074] In this embodiment, the sloping structure and inclined design of the main fire hole 142 have the following advantages:

[0075] First, it can improve the flow and mixing of gas, allowing gas and air to mix better and form a more stable combustion flame;

[0076] Furthermore, the sloping structure and inclined design can change the flow path of the gas, allowing the gas to flow and be discharged more evenly in the mixing chamber 21, thereby improving the thermal balance performance of the burner 300 and preventing the flame from concentrating in a certain area, which could lead to overheating or uneven cooling.

[0077] Meanwhile, the inclined design can prevent the gas from flowing back from the flame stabilizing hole 141 into the main burner hole 142, reduce the backflow of gas, increase the residence time of gas at the flame stabilizing hole 141, and improve combustion efficiency.

[0078] Finally, adopting this open-type burner hole structure for the main burner hole 142 can avoid and reduce clogging of the main burner hole 142. Even if the main burner hole 142 is clogged, it can be easily cleaned, ensuring the normal operation of the burner 300.

[0079] Preferably, there are multiple flame stabilizing holes 141, which are arranged sequentially at intervals along the circumferential direction of the annular body 13. Similarly, there are also multiple main flame holes 142, which are arranged sequentially at intervals along the circumferential direction of the annular body 13.

[0080] The spaced arrangement of multiple flame-stabilizing orifices 141 and main flame orifices 142 allows for a more uniform distribution of gas flow, resulting in more uniform combustion and improved combustion efficiency. Furthermore, the multiple flame-stabilizing orifices 141 provide more gas outlets, making the combustion flame more stable. Simultaneously, the multiple main flame orifices 142 can increase flame stability through multi-point combustion, reducing the possibility of flame extinction. In addition, the spaced arrangement of the multiple flame-stabilizing orifices 141 and main flame orifices 142 improves thermal equilibrium performance, resulting in a more uniform temperature distribution in the burner 300 and preventing localized overheating or insufficient cooling.

[0081] In other embodiments, the number of flame stabilizing holes 141 can be set to multiple as needed, and the multiple flame stabilizing holes 141 can be arranged sequentially at intervals along the circumferential direction of the annular body 13; or the number of main flame holes 142 can be set to multiple as needed, and the multiple main flame holes 142 can be arranged sequentially at intervals along the circumferential direction of the annular body 13, so as to satisfy the normal flow of gas and achieve the effect of flame stabilization.

[0082] Furthermore, the flame stabilizing structure also includes a flame stabilizing groove 143 disposed between adjacent main fire holes 142.

[0083] A flame stabilizing wall 131 is provided on the annular body 13, extending obliquely from the mixing chamber 21 toward the flame stabilizing hole 141. A flame stabilizing groove 143 is formed between the flame stabilizing wall 131 and the inner wall surface of the annular body 13, and the air inlet of the flame stabilizing groove 143 is connected to the mixing chamber 21.

[0084] Specifically, it can be as follows Figure 3 As shown, when the gas flows from inside the mixing chamber 21 to the outside, the flow direction of the gas through the flame stabilizer 143 is as indicated by the arrow.

[0085] By adding a flame stabilizing wall 131 and forming a flame stabilizing groove 143, the gas flows from the inside of the mixing chamber 21 to the outside, passes through the flame stabilizing wall 131, and impacts the inner wall surface of the annular body 13. This reduces the flow velocity of the gas and changes its flow direction, allowing the gas to be discharged from the inside of the burner cap 100 to the outside, forming a stable flame. This arrangement increases the flow path of the gas from the mixing chamber 21 to the outside, reduces the gas flow velocity, and makes the gas and air mix more thoroughly. This allows the gas to be discharged more evenly from the mixing chamber 21, resulting in a more stable flame in the burner 300, improving the flame stabilizing effect of the flame stabilizing groove 143, and preventing the possibility of flame lift-off.

[0086] Preferably, the inclination angle of the partition plate 15 separating the main flame hole 142 and the flame stabilization groove 143 is greater than the inclination angle of the connecting surface between the burner base 200 and the annular body 13. That is, the inclination angle of the partition plate 15 is greater than the inclination angle of the connecting surface between the burner cap 100 and the burner base 200, so that an annular slit flame stabilization structure 16 is formed at the connection between the annular body 13 and the burner base 200. This arrangement slows down the gas flow rate, which enhances the flame stabilization effect and makes the combustion flame more stable.

[0087]

Example 2

[0088] like Figures 4-6 As shown, Embodiment 2 discloses a burner 300, which includes the burner cap 100 of Embodiment 1 and the burner base 200, and the burner cap 100 is disposed on the burner base 200.

[0089] This structural design effectively reduces the flow rate of gas as it exits the burner cap 100, ensuring that the gas is discharged more evenly from the burner base 200. This maximizes the flame stabilization effect of the burner 300, reduces flame fluctuations, and ensures the normal operation and safety of the burner 300.

[0090] Specifically, in this embodiment, such as Figure 4 and Figure 5 As shown, the burner cap 100 is an inner ring cap, the burner base 200 is an inner ring base, the inner ring cap is placed on the inner ring base and forms an inner ring mixing chamber 21, and the deceleration component 11 is disposed in the inner ring mixing chamber 21.

[0091] This structural design, used to address the issue of inner-ring combustion, not only improves flame stabilization at the inner ring base, increasing combustion efficiency and minimizing the possibility of flame lift-off, thus enhancing combustion stability, but also, compared to placing the burner cap 100 on the larger outer ring cap, making it easier to clean the inner ring cap manually. This improves the maintenance and cleaning efficiency of the burner 300, ensuring its normal operation. Furthermore, the reduction gear 11 within the inner ring mixing chamber 21 balances the gas flow velocity, reducing eddies and turbulence, thereby lowering noise and vibration during burner 300 operation and improving user comfort.

[0092] In other embodiments, the burner cap 100 can be configured as an outer ring cap, the burner base 200 can be configured as an outer ring base, and the outer ring cap can be placed on the outer ring base to solve the problem of outer ring combustion, improve the flame stabilization effect at the outer ring base, and improve its combustion efficiency. The specific configuration can be set as needed.

[0093] Preferably, in this embodiment, such as Figure 6 As shown, at least a portion of the speed reduction component 11 is embedded in the burner base 200. This arrangement increases the number of exhaust channels 112 for the exhaust gas, thereby increasing the range of the speed reduction component 11's effect in slowing down the gas flow velocity and maximizing the flame stabilization effect of the speed reduction component 11. Furthermore, it enhances the overall structural stability of the burner cap 100, preventing the burner cap 100 from loosening and detaching from the burner base 200.

[0094] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A burner cap, wherein the burner cap is disposed on a burner base, and a flame stabilizing structure is provided on the burner cap, characterized in that, The flame stabilizing structure includes a speed reduction component that extends from the side surface of the burner cap near the burner base toward the burner base and is spiral in shape; The speed reducer includes a plurality of speed reducers arranged at intervals along the extension direction of the speed reducer. An outlet channel for gas flow is provided between adjacent speed reducers. The speed reducers are wedge-shaped, and along the extension direction perpendicular to the speed reducer, the end of the speed reducer away from the outlet channel is constricted. Furthermore, the angle between the surface of the speed reducer near the burner base and the horizontal direction is greater than the angle between the surface of the speed reducer away from the burner base and the horizontal direction, so that the gas can be discharged from the outlet channel toward the burner base.

2. The burner cap as described in claim 1, characterized in that, The burner cap includes a top cover and an annular body disposed between the top cover and the burner base and extending in the same direction as the speed reducer. The burner cap covers the burner base and forms a mixing chamber. A gas passage is provided through the annular body to connect the mixing chamber and the outside for gas flow.

3. The burner cap as described in claim 2, characterized in that, The gas passage includes a flame stabilizing orifice and a main burner orifice. Along the height direction of the burner cap, the flame stabilizing orifice is located above the main flame port and near the top cap.

4. The burner cap as described in claim 3, characterized in that, The upper surface of the main flame hole near the top cover has a sloping structure, and the upper surface of the main flame hole extends outward from the position near the mixing chamber and in the direction of the flame stabilizing hole.

5. The burner cap as described in claim 3, characterized in that, The number of flame-stabilizing holes is multiple, and the multiple flame-stabilizing holes are arranged sequentially at intervals along the circumferential direction of the annular body; And / or, the number of main flame holes is multiple, and the multiple main flame holes are arranged sequentially at intervals along the circumferential direction of the annular body.

6. The burner cap as described in claim 3, characterized in that, The number of main flame holes is multiple, and the multiple main flame holes are arranged sequentially at intervals along the circumferential direction of the annular body; The flame stabilizing structure also includes a flame stabilizing groove disposed between adjacent main fire holes. A flame stabilizing wall is provided on the annular body, extending obliquely from the mixing chamber toward the flame stabilizing hole. The flame stabilizing wall and the inner wall surface of the annular body form the flame stabilizing groove. The air inlet of the flame stabilizing groove is connected to the mixing chamber.

7. The burner cap as described in claim 6, characterized in that, The inclination angle of the partition plate separating the main flame hole and the flame stabilizing groove is greater than the inclination angle of the connecting surface where the burner base and the annular body connect, so that an annular slit flame stabilizing structure is formed at the connection between the annular body and the burner base.

8. A burner, characterized in that, The burner includes a burner cap as described in any one of claims 1-7 and a burner base, wherein the burner cap is disposed on the burner base.

9. The burner as claimed in claim 8, characterized in that, The burner cap is an inner ring cap, the burner base is an inner ring base, the inner ring cap is placed on the inner ring base and forms an inner ring mixing chamber, and the speed reduction component is disposed in the inner ring mixing chamber.

10. The burner as claimed in claim 8, characterized in that, At least a portion of the speed reduction component is embedded in the burner base.

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