Cooker burner

Abstract

This invention discloses a stove burner, belonging to the field of stove technology, designed to solve the problem of insufficient secondary air supply in existing burners. The stove burner includes an outer ring burner cap and an inner ring burner cap, each with a main flame hole. An oxygen supply groove is provided on the outer and / or inner ring burner caps, located outside and connected to the main flame hole. The oxygen supply groove of this stove burner allows secondary air to flow into the flame of the main flame hole, ensuring sufficient secondary air supply to the main flame hole throughout the combustion process. The location of the oxygen supply groove outside the main flame hole facilitates manufacturing; regardless of the shape of the cookware placed on the stove burner, it will not affect the supply of secondary air to the main flame hole, resulting in more stable combustion and reduced CO emissions. The connection between the oxygen supply groove and the main flame hole ensures a more stable and sufficient supply of secondary air, leading to a more stable flame in the main flame hole.

Description

Technical Field

[0001] This invention relates to the field of stove technology, and more particularly to stove burners. Background Technology

[0002] A stove burner is a device that ignites gas to create a flame, which then heats the food inside the cookware. Stove burners mainly include two types: external flame heating and internal flame heating. Internal flame gas stoves are widely used due to their significant energy-saving effects.

[0003] Some existing burners have multi-layered inner flames in the main burner port of the outer burner cap, with the flame closer to the burner center. This increases the heat exchange area and time at the bottom of the pot, enhancing the flame's heat exchange capacity. An air channel is provided between the upper and lower burner ports to ensure more sufficient air supply for combustion; stratified combustion, segmented oxygen supply, precise flame control, and a uniform temperature field reduce the CO and NO content in the combustion flue gas.

[0004] The defects of this burner include: the outer flame cap uses upper and lower double-layer inner flame combustion with a secondary air supply channel in the middle, and there is no targeted supply to the upper or lower main flame, making it difficult to achieve sufficient secondary air supply. Summary of the Invention

[0005] The purpose of this invention is to provide a stove burner that ensures sufficient secondary air is supplied to the main burner throughout the combustion process.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A stove burner includes an outer ring burner cap and an inner ring burner cap. The outer ring burner cap and the inner ring burner cap are respectively provided with main burner holes. An oxygen supply groove is provided on the outer ring burner cap and / or the inner ring burner cap. The oxygen supply groove is located outside the main burner hole and is connected to the main burner hole.

[0008] In one preferred embodiment, each of the oxygen replenishment tanks is connected to only one of the main fire ports.

[0009] In one preferred embodiment, the oxygen replenishment tank is connected to the upper edge of the main fire hole.

[0010] In one preferred embodiment, the angle between the axis of the oxygen replenishment groove of the outer ring flame cap and the axis of the outer ring flame cap is θ1, and the angle between the axis of the main flame hole of the outer ring flame cap and the axis of the outer ring flame cap is θ2, where θ1 > θ2.

[0011] In one preferred embodiment, the angle between the axis of the oxygen replenishment groove of the inner ring burner and the axis of the inner ring burner is φ1, and the angle between the axis of the main burner hole of the inner ring burner and the axis of the inner ring burner is φ2, where φ1 > φ2.

[0012] In one preferred embodiment, the stove burner further includes a burner head, which is provided with a plurality of external air mixing outlets and at least two internal air mixing outlets. The internal air mixing outlets are closer to the center of the burner head than the external air mixing outlets. An outer ring burner gas supply channel is formed between two adjacent external air mixing outlets, and an inner ring burner gas supply channel is formed between two adjacent internal air mixing outlets.

[0013] In one preferred embodiment, the stove burner further includes a gas distribution seat, which is provided with a gas supply notch, an outer airflow rising channel and an inner airflow rising channel. The gas supply notch is aligned with the gas supply channel of the outer ring burner cap, and the inner airflow rising channel is closer to the center of the gas distribution seat than the outer airflow rising channel.

[0014] In one preferred embodiment, the burner head is further provided with an outer ring burner nozzle and an inner ring burner nozzle. The outer ring burner nozzle is connected to the outer air mixing outlet through the outer ring burner mixing chamber, and the inner ring burner nozzle is connected to the inner air mixing outlet through the inner ring burner mixing chamber. The outer ring burner mixing chamber extends upward in a spiral shape.

[0015] In one preferred embodiment, the angle between the extension direction of the outlet end of the main flame hole and the inner surface of the outer ring flame cap and / or the inner ring flame cap is less than 90°.

[0016] In one preferred embodiment, the outlet ends of all the main flame holes on one of the outer ring flame cap and the inner ring flame cap extend in a clockwise direction, and the outlet ends of all the main flame holes on the other ring flame cap extend in a counterclockwise direction.

[0017] The stove burner disclosed in this invention has an oxygen supply groove on its outer and / or inner ring burner caps. This groove supplies secondary air to the flame in the main burner hole, ensuring sufficient secondary air is supplied to the main burner hole throughout the combustion process. The oxygen supply groove is located outside the main burner hole, making it easier to manufacture without requiring significant modifications to the existing stove burner structure, resulting in low manufacturing costs. Furthermore, the shape of the cookware placed on the burner does not affect the supply of secondary air to the main burner hole, leading to more stable combustion, reduced CO emissions, and effectively solving the problem of flame overflow when using a wok with a pointed bottom. The oxygen supply groove is connected to the main burner hole, ensuring a more stable and sufficient supply of secondary air, resulting in a more stable flame in the main burner hole. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of the stove burner provided in a specific embodiment of the present invention;

[0019] Figure 2 This is an exploded view of the stove burner provided in a specific embodiment of the present invention;

[0020] Figure 3 This is a cross-sectional view of the stove burner provided in a specific embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the outer ring flame cap provided in a specific embodiment of the present invention;

[0022] Figure 5 This is a top view of the outer ring fire cover provided in a specific embodiment of the present invention;

[0023] Figure 6 yes Figure 5 A magnified view of a section at point C;

[0024] Figure 7 yes Figure 5 Sectional view along line AA;

[0025] Figure 8 This is a schematic diagram of the inner ring flame cap provided in a specific embodiment of the present invention;

[0026] Figure 9 This is a top view of the inner ring fire cover provided in a specific embodiment of the present invention;

[0027] Figure 10 yes Figure 9 A magnified view of a section at point D;

[0028] Figure 11 yes Figure 9 Sectional view along the BB direction;

[0029] Figure 12 This is a schematic diagram of the structure of the burner head provided in a specific embodiment of the present invention;

[0030] Figure 13 This is a cross-sectional view of the burner head provided in a specific embodiment of the present invention;

[0031] Figure 14 This is a top view of the combined structure of the outer ring flame cap and the inner ring flame cap provided in a specific embodiment of the present invention;

[0032] Figure 15 This is a cross-sectional view of the combined structure of the outer ring burner cover, inner ring burner cover, and burner head provided in a specific embodiment of the present invention.

[0033] In the picture:

[0034] 1. Outer ring burner cap; 2. Inner ring burner cap; 3. Main burner hole; 4. Oxygen supply tank; 5. Gas distribution seat; 6. Burner head; 7. Electrode needle; 8. Thermocouple; 51. Gas supply notch; 52. Outer airflow rising channel; 53. Inner airflow rising channel; 54. Gas distribution seat inner cavity; 55. Gas distribution seat outer cavity; 61. External air mixed gas outlet; 62. Internal air mixed gas outlet; 63. Outer ring burner cap gas supply channel; 64. Inner ring burner cap gas supply channel; 65. Outer ring burner cap ejector tube; 66. Outer ring burner cap mixing chamber; 67. Inner ring burner cap ejector tube; 68. Inner ring burner cap mixing chamber. Detailed Implementation

[0035] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0040] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0041] This embodiment discloses a stove burner, such as Figures 1 to 3 As shown, the stove burner includes an outer ring burner cap 1, an inner ring burner cap 2, a gas distribution seat 5, a burner head 6, electrode needles 7, and thermocouples 8. The electrode needles 7 and thermocouples 8 are respectively mounted on the burner head 6. Figures 4 to 11 As shown, the outer ring burner cap 1 and the inner ring burner cap 2 are respectively provided with main burner holes 3, and oxygen supply grooves 4 are provided on the outer ring burner cap 1 and / or the inner ring burner cap 2. The oxygen supply grooves 4 are located outside the main burner holes 3 and are connected to the main burner holes 3.

[0042] The oxygen supply tank 4 supplies secondary air to the flame in the main burner hole 3, ensuring sufficient secondary air is supplied to the main burner hole 3 throughout the combustion process. Located outside the main burner hole 3, the oxygen supply tank 4 is easier to manufacture, requiring minimal modifications to the existing burner structure, resulting in low manufacturing costs. Furthermore, the shape of the cookware placed on the burner does not affect the supply of secondary air to the main burner hole 3, leading to more stable combustion, reduced CO emissions, and effectively solving the problem of flame overflow (flame overflowing along the secondary air supply channel) when using a wok with a pointed bottom. The oxygen supply tank 4 is connected to the main burner hole 3, ensuring a more stable and sufficient supply of secondary air, resulting in a more stable flame in the main burner hole 3.

[0043] The specific shape of the oxygen supply tank 4 is not limited, as long as it can supply secondary air to the main burner hole 3. Preferably, the oxygen supply tank 4 is strip-shaped, which is easy to process and has little impact on the overall strength of the outer ring burner cap 1 and the inner ring burner cap 2. Each oxygen supply tank 4 is connected to only one main burner hole 3, that is, a one-to-one directional supply method is adopted, which makes the supply more uniform. The oxygen supply tank 4 is connected to the upper edge of the main burner hole 3, which can supply secondary air to the upper middle part of the flame of the main burner hole 3, shortening the supply distance of secondary air and making the secondary air supply smoother.

[0044] like Figures 4 to 7 As shown, the oxygen supply tank 4 connects from the outside of the outer ring burner cap 1 to the upper edge of the main burner hole 3. Secondary air is supplied from the outside of the outer ring burner cap 1 to the upper half of the main burner hole 3, providing secondary air replenishment to the upper and middle parts of the main burner hole 3. The angle between the axis of the oxygen supply tank 4 of the outer ring burner cap 1 and the axis of the outer ring burner cap 1 is θ1, and the angle between the axis of the main burner hole 3 of the outer ring burner cap 1 and the axis of the outer ring burner cap 1 is θ2. Since θ1 > θ2, the secondary air supply route is smoother, and the secondary air can directly contact the flame ejected from the main burner hole 3.

[0045] like Figures 8 to 11 As shown, the oxygen supply tank 4 connects from the outside of the inner ring burner cap 2 to the upper edge of the main burner hole 3. Secondary air is supplied from the outside of the inner ring burner cap 2 to the upper part of the main burner hole 3, thereby providing secondary air supply to the upper and middle parts of the main burner hole 3. The angle between the axis of the oxygen supply tank 4 of the inner ring burner cap 2 and the axis of the inner ring burner cap 2 is φ1, and the angle between the axis of the main burner hole 3 of the inner ring burner cap 2 and the axis of the inner ring burner cap 2 is φ2. Since φ1 > φ2, the secondary air supply route is smoother, and the secondary air can directly contact the flame ejected from the main burner hole 3.

[0046] like Figure 12As shown, the burner head 6 is provided with multiple external air mixing outlets 61 and at least two internal air mixing outlets 62. The external air mixing outlets 61 are used to supply fuel gas to the outer ring burner flame (inner flame type), and the internal air mixing outlets 62 are used to supply fuel gas to the inner ring burner flame (inner flame type). The internal air mixing outlets 62 are closer to the center of the burner head 6 than the external air mixing outlets 61. An outer ring burner gas supply channel 63 is formed between two adjacent external air mixing outlets 61, and an inner ring burner gas supply channel 64 is formed between two adjacent internal air mixing outlets 62. External air can pass through the outer ring burner gas supply channel 63 and enter the inner ring burner gas supply channel 64.

[0047] like Figures 1 to 3 ,as well as Figure 12 As shown, the gas distribution seat 5 is equipped with a gas supply notch 51, an outer airflow rising channel 52, and an inner airflow rising channel 53. The gas supply notch 51 is aligned with the outer ring burner gas supply channel 63. After the gas distribution seat 5 and the burner head 6 are assembled, the gas supply notch 51 fits perfectly above the outer ring burner gas supply channel 63, allowing outside air to enter the burner of the stove through the outer ring burner gas supply channel 63. The inner airflow rising channel 53 is closer to the center of the gas distribution seat 5 than the outer airflow rising channel 52. Figure 3 As shown, after the secondary air enters the stove burner, a portion of it flows upward along the outer airflow rising channel 52 until it reaches the inner area of ​​the outer ring burner 1, providing secondary air supply for the outer ring burner flame (inner flame type); the other portion of the secondary air continues to flow laterally towards the center of the stove burner, and then flows upward along the inner airflow rising channel 53 to the inner area of ​​the inner ring burner 2, providing secondary air supply for the inner ring burner flame (inner flame type).

[0048] During cooking, pots and other cooking utensils are placed on the stove burner. The central flame area of ​​the burner has the highest temperature, causing thermal expansion and making it difficult for secondary air to rise from the outer airflow ascending channel 52 and the inner airflow ascending channel 53 to the root of the main burner hole 3 and the upper part of the flame stabilizer (not shown), resulting in insufficient oxygen supply. The oxygen supply channel 4 shortens the secondary air supply distance, allowing secondary air to be directly delivered to the middle and upper parts of the main burner hole 3, making secondary air supply smoother.

[0049] like Figure 13As shown, the burner head 6 is also equipped with an outer ring burner nozzle 65 and an inner ring burner nozzle 67. The outer ring burner nozzle 65 is connected to the outer air mixed gas outlet 61 through the outer ring burner mixing chamber 66, and the inner ring burner nozzle 67 is connected to the inner air mixed gas outlet 62 through the inner ring burner mixing chamber 68. The outer ring burner mixing chamber 66 extends upward in a spiral shape. The inner ring burner mixing chamber 68 is annular, and the gas flows more smoothly and with less resistance in the inner ring burner mixing chamber 68 (shown by the solid curve with arrows). From a top-down view, the outer ring burner mixing chamber 66 is also ring-shaped. However, in reality, the outer ring burner mixing chamber 66 moves upward during its extension. This prevents interference between the outer ring burner injector 65 and the inner ring burner injector 67 when they are at approximately the same height. In other words, a section of the outer ring burner mixing chamber 66 passes over the top of the inner ring burner mixing chamber 68, simplifying the overall structure and making the gas flow (shown by the dashed curve with arrows) smoother.

[0050] Based on the above structure, the angle between the extension direction of the main burner hole 3 and the inner surface of the outer ring burner cap 1 and / or the inner ring burner cap 2 is less than 90°. That is, the outlet end of the main burner hole 3 is not directly facing the center of the stove burner, but is distributed in a tangential parabolic shape relative to the inner surface of the outer ring burner cap 1 and / or the inner ring burner cap 2. During combustion, the flame burns tangentially, forming a swirling flame that converges inward.

[0051] Ordinary internal flames point towards the center of the burner, while internal swirling flames point towards the center of the burner with a horizontal tangential angle. This concentrates the combustion heat, resulting in higher flame temperature and higher energy efficiency.

[0052] The specific extension direction of the main flame port 3 outlet end is not limited, as long as it can form a swirling flame. Preferably, such as Figure 14 As shown, the outlet ends of all the main flame holes 3 on one of the outer ring burner caps 1 and the inner ring burner caps 2 extend in a clockwise direction, while the outlet ends of all the main flame holes 3 on the other ring burner cap extend in a counterclockwise direction, forming a double inner flame swirl. During combustion, the flames of the inner ring burner cap (inner flame type) and the flames of the outer ring burner cap (inner flame type) burn in opposite directions, thus concentrating the combustion heat, resulting in a high flame temperature and high efficiency.

[0053] When using the burner of this stove, if Figure 15 As shown, after the gas reaches the gas inlet (not shown) of the inner ring burner cap and the gas inlet (not shown) of the outer ring burner cap, the gas is injected into the corresponding outer ring burner cap ejector tube 65 and inner ring burner cap ejector tube 67. Under the ejection action of the outer ring burner cap ejector tube 65 and the inner ring burner cap ejector tube 67, primary air is respectively carried into the outer ring burner cap ejector tube 65 and the inner ring burner cap ejector tube 67, and the gas and primary air are mixed in the outer ring burner cap mixing chamber 66 and the inner ring burner cap mixing chamber 68, respectively.

[0054] The mixture of fuel gas and primary air in the outer ring burner mixing chamber 66 reaches the outer cavity 55 of the gas distributor and flows into the cavity of the outer ring burner 1. It exits from the main flame hole 3 (inwardly inclined) of the outer ring burner 1, and after being replenished with secondary air, combustion occurs to form the outer ring burner flame (inner flame type). The flow path is shown by the dashed curve with arrows. The mixture of fuel gas and primary air in the inner ring burner mixing chamber 68 reaches the inner cavity 54 of the gas distributor and flows into the cavity of the inner ring burner 2. It exits from the main flame hole 3 (inwardly inclined) of the inner ring burner 2, and after being replenished with secondary air, combustion occurs to form the inner ring burner flame (inner flame type). The flow path is shown by... Figure 15 The solid curve with the arrow in the middle is shown.

[0055] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A stove burner, comprising an outer ring burner cap (1) and an inner ring burner cap (2), wherein the outer ring burner cap (1) and the inner ring burner cap (2) are respectively provided with main flame holes (3), the outlet end of the main flame holes (3) facing the center of the stove burner, characterized in that, An oxygen supply groove (4) is provided on the outer ring flame cap (1) and / or the inner ring flame cap (2). The oxygen supply groove (4) is located outside the main flame hole (3) and is connected to the main flame hole (3). The oxygen supply groove (4) is used to supply secondary air to the flame in the main flame hole (3).

2. The stove burner according to claim 1, characterized in that, Each of the oxygen replenishment tanks (4) is connected to only one of the main fire ports (3).

3. The stove burner according to claim 1, characterized in that, The oxygen replenishment tank (4) is connected to the upper edge of the main fire hole (3).

4. The stove burner according to claim 1, characterized in that, The angle between the axis of the oxygen supply groove (4) of the outer ring flame cap (1) and the axis of the outer ring flame cap (1) is θ1, and the angle between the axis of the main flame hole (3) of the outer ring flame cap (1) and the axis of the outer ring flame cap (1) is θ2, where θ1 > θ2.

5. The stove burner according to claim 1, characterized in that, The angle between the axis of the oxygen supply groove (4) of the inner ring flame cap (2) and the axis of the inner ring flame cap (2) is φ1, and the angle between the axis of the main flame hole (3) of the inner ring flame cap (2) and the axis of the inner ring flame cap (2) is φ2, where φ1 > φ2.

6. The stove burner according to any one of claims 1 to 5, characterized in that, The stove burner also includes a burner head (6), which is provided with multiple external air mixing outlets (61) and at least two internal air mixing outlets (62). The internal air mixing outlets (62) are closer to the center of the burner head (6) than the external air mixing outlets (61). An outer ring burner gas supply channel (63) is formed between two adjacent external air mixing outlets (61), and an inner ring burner gas supply channel (64) is formed between two adjacent internal air mixing outlets (62).

7. The stove burner according to claim 6, characterized in that, The stove burner also includes a gas distribution seat (5), which is provided with a gas supply notch (51), an outer airflow rising channel (52) and an inner airflow rising channel (53). The gas supply notch (51) is aligned with the gas supply channel (63) of the outer ring burner. The inner airflow rising channel (53) is closer to the center of the gas distribution seat (5) than the outer airflow rising channel (52).

8. The stove burner according to claim 6, characterized in that, The burner head (6) is also provided with an outer ring flame cap ejector tube (65) and an inner ring flame cap ejector tube (67). The outer ring flame cap ejector tube (65) is connected to the outer air mixing outlet (61) through the outer ring flame cap mixing chamber (66). The inner ring flame cap ejector tube (67) is connected to the inner air mixing outlet (62) through the inner ring flame cap mixing chamber (68). The outer ring flame cap mixing chamber (66) extends upward in a spiral shape.

9. The stove burner according to any one of claims 1 to 5, characterized in that, The angle between the extension direction of the outlet end of the main fire hole (3) and the inner surface of the outer ring fire cap (1) and / or the inner ring fire cap (2) is less than 90°.

10. The stove burner according to claim 9, characterized in that, The outlet ends of all the main flame holes (3) on one of the outer ring flame cap (1) and the inner ring flame cap (2) extend in a clockwise direction, while the outlet ends of all the main flame holes (3) on the other one extend in a counterclockwise direction.

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