Single-nozzle multi-ring burner

Abstract

A gas supply channel is arranged in the middle of a gas supply seat, and a nozzle is arranged below the gas supply channel; the gas distribution disc is provided with a middle disc, a gas distribution channel and an outer ring groove seat; the middle disc is arranged above the gas supply channel at intervals, and the middle disc and the gas supply base are spaced to form a middle gas mixing cavity; the outer ring fire cover is placed on the outer ring groove seat, and an outer ring gas mixing cavity is defined by the outer ring fire cover and the outer ring groove seat; the gas distribution channel is communicated with the middle gas mixing cavity and the outer ring gas mixing cavity; an inner ring fire hole is formed outside the middle disc; the outer ring fire cover is provided with outer ring fire holes. The three-dimensional flow dividing design that the single nozzle is matched with the gas dividing channels is adopted, the limitation that a traditional single-nozzle combustor can only form single-ring flames is broken through, inner-ring independent flames and outer-ring independent flames are synchronously formed through cooperative gas supply of the middle gas mixing cavity and the outer-ring gas mixing cavity, and the combustion heat efficiency is remarkably improved while the structural compactness is kept.

Description

Technical Field

[0001] This utility model relates to the field of burner technology, and in particular to a single-nozzle multi-ring burner. Background Technology

[0002] As the core component of energy conversion, the burner of a gas stove directly determines important performance indicators such as air injection efficiency, gas mixing uniformity, and flame stability during combustion. Traditional bottom-intake ejector burners integrate the burner body and ejector tube below the panel, achieving staged gas supply and air premixing through a multi-channel ejector structure. While this structure ensures thermal efficiency, its complex cavity structure requires a large installation space.

[0003] For some simple stove products, gas is usually supplied through a single high-pressure method, making bottom-intake injector burners unsuitable. These burners, lacking a burner structure and relying solely on a single nozzle for gas supply, typically employ either star-shaped direct injection or a single-ring burner, resulting in low thermal efficiency. Furthermore, their design is limited by the constraints of outer ring burners or star-shaped burners, leading to a relatively restrictive appearance. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a single-nozzle multi-ring burner.

[0005] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: a single-nozzle multi-ring burner, including: a gas supply seat, a gas distribution plate and an outer ring flame cap;

[0006] The gas supply base has a gas supply channel in the middle, and the nozzle is located below the gas supply channel; the gas distribution plate has a central disc, a gas distribution channel, and an outer ring groove seat; the central disc is spaced above the gas supply channel and forms a central mixing chamber with the gas supply base; the outer ring flame cap is placed on the outer ring groove seat and forms an outer ring mixing chamber with the outer ring groove seat; the gas distribution channel connects the central mixing chamber and the outer ring mixing chamber; the central disc has an inner ring flame hole on its outer side; the outer ring flame cap has an outer ring flame hole.

[0007] Optionally, an annular step is provided above the gas supply channel, and an arc-shaped groove is provided on the inner side of the gas distribution channel, which can be aligned with and abut against the annular step.

[0008] Optionally, at least three air distribution channels are provided, which are evenly distributed around the outer periphery of the central disk in a circumferential direction.

[0009] Optionally, two adjacent air distribution channels are spaced apart to form a secondary air hole; the air supply seat is provided with a secondary air replenishment groove; the secondary air replenishment groove is located below the secondary air hole.

[0010] Optionally, the inner ring fire hole is arranged close to the secondary air hole.

[0011] Optionally, the outer ring flame holes are arranged along the outer periphery of the outer ring flame cap; an inner ring ignition hole is provided on the inner side of the outer ring groove seat; the inner ring ignition hole is close to the secondary air hole cover.

[0012] Optionally, a diffusion hole is provided above the outer ring flame cap, and the opening of the diffusion hole is close to the inner ring ignition hole cover.

[0013] Optionally, the gas supply seat is provided with an ignition groove for installing an ignition needle; the tip of the ignition needle is arranged near the inner ring ignition hole.

[0014] The beneficial effects of this invention are as follows: It employs a three-dimensional flow-dividing design with a single nozzle and a gas distribution channel, breaking through the limitation of traditional single-nozzle burners that can only form a single-ring flame. Through the coordinated gas supply of the central mixing chamber and the outer ring mixing chamber, independent inner and outer double-ring flames are formed simultaneously, significantly improving combustion thermal efficiency while maintaining structural compactness. Secondly, the gradually narrowing mixing chamber structure formed by the central disc of the gas distribution plate and the gas supply seat, combined with the guiding effect of the gas distribution channel, effectively enhances the turbulent mixing effect of gas and air. This innovative structure resolves the contradiction between the thermal efficiency and styling design of single-nozzle burners, providing greater room for form innovation in the industrial design of cooktop products.

[0015] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a schematic diagram of the structure of the single-nozzle multi-ring burner of this utility model;

[0018] Figure 2 for Figure 1 Exploded view of a single-nozzle multi-ring burner;

[0019] Figure 3 for Figure 1 Cross-sectional view of a single-nozzle multi-ring burner.

[0020] Explanation of key component symbols:

[0021] 10. Gas supply seat; 11. Gas supply channel; 12. Annular step; 13. Secondary air supply groove; 20. Gas distribution plate; 21. Central disc; 22. Gas distribution channel; 23. Outer ring groove seat; 24. Inner ring ignition hole; 25. Arc-shaped groove; 26. Inner ring ignition hole; 27. Ignition slot; 30. Outer ring burner cap; 31. Outer ring ignition hole; 32. Diffusion ignition hole; 40. Central mixing chamber; 50. Outer ring mixing chamber; 60. Secondary air hole. Detailed Implementation

[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0023] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0024] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0025] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0026] Example

[0027] Reference Figures 1 to 3 The present invention proposes a single-nozzle multi-ring burner, comprising: a gas supply base 10, a gas distribution plate 20, and an outer ring flame cap 30.

[0028] A gas supply channel 11 is provided in the middle of the gas supply base 10, and the nozzle is located below the gas supply channel 11; the gas distribution plate 20 is provided with a central disc 21, a gas distribution channel 22, and an outer ring groove seat 23; the central disc 21 is spaced above the gas supply channel 11 and forms a central mixing chamber 40 with the gas supply base 10; the outer ring flame cap 30 is placed on the outer ring groove seat 23 and forms an outer ring mixing chamber 50 with the outer ring groove seat 23; the gas distribution channel 22 connects the central mixing chamber 40 and the outer ring mixing chamber 50; the central disc 21 is provided with an inner ring flame hole 24; the outer ring flame cap 30 is provided with an outer ring flame hole 31.

[0029] This invention employs a three-dimensional flow-dividing design using a single nozzle and a gas distribution channel 22, overcoming the limitation of traditional single-nozzle burners that can only form a single-ring flame. Through the coordinated gas supply of the central mixing chamber 40 and the outer ring mixing chamber 50, independent inner and outer ring flames are simultaneously formed, significantly improving combustion thermal efficiency while maintaining structural compactness. Secondly, the gradually narrowing mixing chamber structure formed by the central disc 21 of the gas distribution plate 20 and the gas supply seat 10, combined with the guiding effect of the gas distribution channel 22, effectively enhances the turbulent mixing effect of gas and air. This innovative structure resolves the contradiction between the thermal efficiency and styling design of single-nozzle burners, providing greater room for form innovation in the industrial design of cooktop products.

[0030] In this embodiment, an annular step 12 is provided above the gas supply channel 11, and an arc-shaped groove 25 is provided on the inner side of the gas distribution channel 22. The arc-shaped groove 25 can be aligned and abutted against the annular step 12. The matching abutment design between the annular step 12 above the gas supply channel 11 and the arc-shaped groove 25 on the inner side of the gas distribution channel 22 ensures the axial alignment accuracy between the gas distribution channel 22 and the gas supply channel 11, and avoids uneven flame caused by gas flow deviation.

[0031] In this embodiment, at least three gas distribution channels 22 are provided, which are evenly distributed around the outer periphery of the central disk 21. The at least three circumferentially distributed gas distribution channels 22 realize the symmetrical distribution of gas from the central mixing chamber 40 to the outer ring mixing chamber 50, eliminating the phenomenon of gas enrichment or shortage on one side.

[0032] Specifically, two adjacent gas distribution channels 22 form secondary air holes 60 at intervals; the gas supply seat 10 has a secondary air replenishment groove 13 located below the secondary air holes 60. The secondary air holes 60 formed by the intervals between adjacent gas distribution channels 22 correspond vertically to the secondary air replenishment groove 13 of the gas supply seat 10, forming a vertical air supply channel. This structure utilizes the negative pressure effect generated by gas injection to naturally draw in air from the secondary air replenishment groove 13 and directly replenish the combustion zone through the secondary air holes 60, thereby increasing the amount of secondary air introduced. At the same time, the air replenishment path is orthogonal to the gas flow direction, enhancing the shear mixing effect of the airflow and further improving the premixing effect.

[0033] In this embodiment, the inner ring flame port 24 is arranged close to the secondary air port 60. This arrangement allows the inner ring flame to quickly receive secondary air supply during the initial ignition phase. This layout utilizes the airflow scouring effect of the secondary air port 60 to prevent carbon buildup and blockage of the inner ring flame port 24, thus extending the burner's service life.

[0034] Specifically, the outer ring ignition holes 31 are arranged along the outer periphery of the outer ring ignition cap 30; an inner ring ignition hole 26 is provided on the inner side of the outer ring groove seat 23; the inner ring ignition hole 26 is covered near the secondary air hole 60. The inner ring ignition hole 26 is close to the high oxygen area of ​​the secondary air hole 60, which increases the flame propagation speed in the initial stage of ignition and ensures that the outer ring flame is quickly and synchronously ignited.

[0035] Furthermore, a diffusion port 32 is provided above the outer ring flame cap 30, with the opening of the diffusion port 32 close to the inner ring ignition port 26. The diffusion port 32 above the outer ring flame cap 30 is arranged close to the inner ring ignition port 26, using the high-temperature flue gas of the inner ring flame as an ignition source to achieve automatic ignition of the diffusion flame.

[0036] In this embodiment, the gas supply base 10 is provided with an ignition groove 27 for mounting the ignition needle; the tip of the ignition needle is positioned close to the inner ring ignition hole 26. The precise alignment design of the ignition needle groove with the inner ring ignition hole 26, and the spatial coupling between the high gas concentration area of ​​the inner ring ignition hole 26 and the ignition spark, ensure rapid flame establishment and that the ignition process is not interfered with by the outer ring airflow. This structure also prevents ignition failure caused by vibration-induced needle displacement through the limiting effect of the groove, significantly improving product reliability.

[0037] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A single-nozzle multi-ring burner, characterized in that, include: Gas supply base (10), gas distribution plate (20) and outer ring flame cap (30); The gas supply base (10) has a gas supply channel (11) in the middle, and the nozzle is located below the gas supply channel (11); the gas distribution plate (20) has a central disc (21), a gas distribution channel (22) and an outer ring groove seat (23); the central disc (21) is spaced above the gas supply channel (11) and forms a central mixing chamber (40) with the gas supply base (10); the outer ring flame cap (30) is placed on the outer ring groove seat (23) and forms an outer ring mixing chamber (50) with the outer ring groove seat (23); the gas distribution channel (22) connects the central mixing chamber (40) and the outer ring mixing chamber (50); the central disc (21) has an inner ring flame hole (24) on its outer side; the outer ring flame cap (30) has an outer ring flame hole (31).

2. The single-nozzle multi-ring burner according to claim 1, characterized in that: An annular step (12) is provided above the gas supply channel (11), and an arc-shaped groove (25) is provided on the inner side of the gas distribution channel (22). The arc-shaped groove (25) can be aligned with and abut against the annular step (12).

3. The single-nozzle multi-ring burner according to claim 1, characterized in that: At least three gas distribution channels (22) are provided, which are evenly arranged around the outer periphery of the central disk (21) in the circumferential direction.

4. The single-nozzle multi-ring burner according to claim 3, characterized in that: Two adjacent air distribution channels (22) are spaced apart to form a secondary air hole (60); the air supply seat (10) is provided with a secondary air replenishment groove (13); the secondary air replenishment groove (13) is located below the secondary air hole (60).

5. The single-nozzle multi-ring burner according to claim 4, characterized in that: The inner ring fire hole (24) is arranged close to the secondary air hole (60).

6. The single-nozzle multi-ring burner according to claim 5, characterized in that: The outer ring fire hole (31) is arranged along the outer periphery of the outer ring fire cover (30); an inner ring ignition hole (26) is provided on the inner side of the outer ring groove seat (23); the inner ring ignition hole (26) is close to the secondary air hole (60) cover.

7. The single-nozzle multi-ring burner according to claim 6, characterized in that: A diffusion hole (32) is provided above the outer ring flame cap (30), and the opening of the diffusion hole (32) is close to the inner ring ignition hole (26) cloth cover.

8. The single-nozzle multi-ring burner according to claim 6, characterized in that: The gas supply seat (10) is provided with an ignition groove (27) for installing an ignition needle; the top of the ignition needle is arranged near the inner ring ignition hole (26).

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