Multi-cavity plate gold burner

Abstract

A multi-cavity plate gold burner, comprising: a lower bottom shell formed by a plate member, an upper gas distribution shell, an outer ring fire cover, a center transition shell and a center fire cover; the outer ring fire cover is riveted and installed on the upper ring wall and the lower ring wall, and is surrounded to form an outer ring gas mixing cavity; the lower gas supply hole and the upper gas supply hole are spaced apart to form a center gas mixing cavity; the center transition shell is installed above the upper gas supply hole; the center fire cover is riveted with the center transition shell, and is surrounded to form a center secondary gas mixing cavity; the center secondary gas mixing cavity is communicated with the center gas mixing cavity; the outer ring fire cover and the center fire cover are provided with fire outlet holes and / or fire outlet grooves. The multi-stage and cavity gas mixing structure greatly prolongs the mixing path of the gas and the air, ensures that the gas is fully mixed before combustion, thereby significantly improving the stability of combustion and the uniformity of the flame, effectively improving the thermal efficiency and reducing the emission of harmful substances.

Description

Technical Field

[0001] This utility model relates to the field of burner technology, and in particular to a multi-chamber sheet metal burner. Background Technology

[0002] In recent years, with the improvement of stainless steel processing technology, its excellent surface finish, high melting point, strong oxidation resistance, and good mechanical properties have gradually gained favor. Using stainless steel to manufacture burners has become an important development direction in the industry. Stainless steel burners not only have a long lifespan and aesthetically pleasing appearance, but also better meet clean production standards. For example, patent CN202122777870.8 proposes a sheet metal stamping furnace head structure. This structure omits the traditional gas mixing chamber, relying solely on the main injector and central injector to directly connect to the gas distribution plate. While this reduces material and manufacturing costs to some extent, the lack of a mixing chamber leads to insufficient premixing of gas and air, resulting in poor combustion stability and flame uniformity, thus affecting thermal efficiency and emission performance.

[0003] If an attempt is made to improve combustion performance by adding a gas mixing structure, multiple sheet metal parts would need to be stacked and complex welding would be required, which would significantly increase the difficulty of the process and production costs, contradicting the original design intention of low cost and easy mass production of sheet metal burners. Therefore, there is a need to design a low-cost sheet metal burner with more gas mixing chambers. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the present invention is proposed.

[0005] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: a multi-cavity sheet metal burner, comprising: a bottom shell formed by sheet metal, an upper gas distribution shell, an outer ring flame cap, a central transition shell and a central flame cap; The lower shell includes a lower shell plate, a lower air supply hole located in the middle of the lower shell plate, and a lower annular wall located on the outer edge of the lower shell plate; the upper gas distribution shell includes an upper shell plate, an upper air supply hole located on the upper shell plate, and an upper annular wall located on the outer edge of the upper shell plate; the outer ring flame cap is riveted to the upper annular wall and the lower annular wall, forming an outer annular mixing chamber; the lower air supply hole and the upper air supply hole are spaced apart to form a central mixing chamber; the central transition shell is installed above the upper air supply hole; the central flame cap is riveted to the central transition shell, forming a central secondary mixing chamber; the central secondary mixing chamber communicates with the central mixing chamber; the outer ring flame cap and the central flame cap are provided with flame outlet holes and / or flame outlet grooves.

[0006] Optionally, the upper and lower shells are arranged to form a plurality of gas distribution channels, which are connected between the central mixing chamber and the outer ring mixing chamber.

[0007] Optionally, the gas distribution channels are evenly arranged along the circumference of the central mixing chamber; a secondary gas replenishment channel is provided between the two gas distribution channels, running vertically through each other.

[0008] Optionally, the central transition shell is riveted to the upper shell plate.

[0009] Optionally, the lower ring wall is inclined outwards.

[0010] Optionally, an outwardly turned edge is provided above the upper ring wall to form a gas-distributing baffle; the gas-distributing baffle is located in the middle of the outer ring mixing chamber near the upper ring wall.

[0011] Optionally, the lower air supply hole is riveted to an air supply connecting cylinder.

[0012] The beneficial effects of this invention are as follows: It optimizes the gas mixing effect and improves combustion performance. By cleverly setting the lower bottom shell and upper gas distribution shell at intervals, an independent central mixing chamber is naturally formed. Simultaneously, the outer ring burner cap is riveted to the upper and lower ring walls to form an outer ring mixing chamber. The gas in the central mixing chamber is then further mixed in a central secondary mixing chamber formed by the central transition shell and the central burner cap. This multi-stage, chambered mixing structure greatly extends the mixing path between the gas and air, ensuring that the gas is fully mixed before combustion, thereby significantly improving combustion stability and flame uniformity, effectively increasing thermal efficiency and reducing the emission of harmful substances. All core components of the burner are made of sheet metal stamping and assembled using a riveting process, completely avoiding complex and costly welding procedures. This structural design not only fully leverages the inherent advantages of sheet metal parts—low cost and easy mass production—but also achieves the construction of multiple independent mixing chambers through a simple riveting process. The process is simple, assembly is convenient, and it is very suitable for large-scale production.

[0013] 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

[0014] 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: Figure 1 This is a schematic diagram of the structure of a multi-chamber sheet metal burner; Figure 2 for Figure 1 Exploded view of a multi-chamber sheet metal burner; Figure 3 for Figure 1 Cross-sectional view of a multi-chamber sheet metal burner.

[0015] Explanation of key component symbols: 10. Lower bottom shell; 11. Lower shell plate; 12. Lower air supply port; 13. Lower annular wall; 14. Air supply connecting cylinder; 20. Upper air distribution shell; 21. Upper shell plate; 22. Upper air supply port; 23. Upper annular wall; 24. Air distribution baffle; 30. Outer annular flame cap; 40. Central transition shell; 50. Central flame cap; 60. Outer annular mixing chamber; 61. Air distribution channel; 62. Secondary air supply channel; 70. Central mixing chamber; 71. Central secondary mixing chamber. Detailed Implementation

[0016] 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.

[0017] 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 indicating the quantity or sequence of the indicated technical features.

[0018] 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.

[0019] 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.

[0020] Example Reference Figures 1 to 3 The present invention proposes a multi-cavity sheet metal burner, comprising: a lower bottom shell 10 formed by sheet metal, an upper gas distribution shell 20, an outer ring flame cap 30, a central transition shell 40, and a central flame cap 50. The lower shell 10 includes a lower shell plate 11, a lower air supply hole 12 located in the middle of the lower shell plate 11, and a lower annular wall 13 located on the outer edge of the lower shell plate 11; the upper gas distribution shell 20 includes an upper shell plate 21, an upper air supply hole 22 located on the upper shell plate 21, and an upper annular wall 23 located on the outer edge of the upper shell plate 21; the outer ring flame cap 30 is riveted to the upper annular wall 23 and the lower annular wall 13, and forms an outer annular mixing chamber 60; the lower air supply hole 12 and the upper air supply hole 22 are spaced apart to form a central mixing chamber 70; the central transition shell 40 is installed above the upper air supply hole 22; the central flame cap 50 is riveted to the central transition shell 40, and forms a central secondary mixing chamber 71; the central secondary mixing chamber 71 is connected to the central mixing chamber 70; the outer ring flame cap 30 and the central flame cap 50 are provided with flame outlet holes and / or flame outlet grooves.

[0021] This invention optimizes the gas mixing effect and improves combustion performance. By cleverly arranging the lower bottom shell 10 and upper gas distribution shell 20 at intervals, an independent central mixing chamber 70 is naturally formed. Simultaneously, the outer ring burner cap 30 is riveted to the upper and lower ring walls 13 to form an outer ring mixing chamber 60. The gas in the central mixing chamber 70 is then further mixed in a central secondary mixing chamber 71 formed by the central transition shell 40 and the central burner cap 50. This multi-stage, chambered mixing structure significantly extends the mixing path between the gas and air, ensuring thorough mixing before combustion. This significantly improves combustion stability and flame uniformity, effectively increasing thermal efficiency and reducing harmful emissions. All core components of the burner are formed by sheet metal stamping and assembled using riveting, completely avoiding complex and costly welding processes. This structural design not only fully leverages the inherent advantages of low-cost and easy-to-mass-produce sheet metal parts but also achieves the construction of multiple independent mixing chambers through a simple riveting process. The process is simple, assembly is convenient, and it is very suitable for large-scale production.

[0022] In this embodiment, the upper shell 21 and the lower shell 11 enclose a plurality of gas distribution channels 61, which connect the central mixing chamber 70 and the outer ring mixing chamber 60. By setting the gas distribution channels 61 between the upper and lower shells 11, an orderly and uniform flow from the central mixing chamber 70 to the outer ring mixing chamber 60 is achieved. This not only ensures the stability of the gas supply to the outer ring flame and avoids local flameout or uneven flame, but also, since these gas distribution channels 61 are themselves enclosed by the upper and lower shells 11, no additional parts are needed. This is an innovative utilization of the main structure, further optimizing the flow and distribution path of the gas within the entire burner and improving the overall combustion performance.

[0023] Furthermore, the gas distribution channels 61 are evenly arranged circumferentially along the central mixing chamber 70; a secondary gas supply channel 62, running vertically between adjacent gas distribution channels 61, is provided. Firstly, the even circumferential arrangement of the gas distribution channels 61 ensures the uniformity of gas delivery to the outer ring mixing chamber 60, thereby guaranteeing the roundness and stability of the outer ring flame. Secondly, the secondary gas supply channel 62 between adjacent gas distribution channels 61 is a key improvement, allowing external air to be directly and smoothly supplied to the burner area.

[0024] In this embodiment, the central transition shell 40 is riveted and fixed to the upper shell plate 21. This ensures a stable and reliable connection of the gas flow path from the central mixing chamber 70 to the central secondary mixing chamber 71, avoiding potential gas leakage or reduced mixing efficiency due to loosening during use.

[0025] In this embodiment, the lower annular wall 13 is inclined outwards at its upper part. This outward inclination of the lower annular wall 13 forms a vent. This structure is more conducive to guiding and drawing in surrounding air, premixing it with the combustion gas escaping from the outer annular mixing chamber 60, thus preparing for combustion. Simultaneously, the inclined annular wall provides guidance and support for flame propagation, helping to stabilize the shape of the outer annular flame and improve combustion stability.

[0026] In this embodiment, an outwardly turned edge forming a gas distribution baffle 24 is provided above the upper annular wall 23; the gas distribution baffle 24 is positioned in the middle of the outer annular mixing chamber 60 near the upper annular wall 23. This baffle can block and redistribute the gas flow entering the outer annular mixing chamber 60 from the gas distribution channel 61, preventing the gas flow from directly and concentratedly impacting a portion of the burner cap. This results in a more uniform gas distribution within the outer annular mixing chamber 60, ultimately leading to consistent gas pressure at the outer annular burner holes and uniform flame height, significantly improving combustion quality and aesthetics.

[0027] In this embodiment, the lower air supply port 12 is riveted to an air supply connection cylinder 14. This creates a robust, standard interface that facilitates a secure connection to the air supply pipeline.

[0028] 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 multi-chamber sheet metal burner, characterized in that, include: The sheet metal formed lower bottom shell (10), upper gas distribution shell (20), outer ring flame cap (30), central transition shell (40) and central flame cap (50); The lower shell (10) includes a lower shell plate (11), a lower air supply hole (12) disposed in the middle of the lower shell plate (11), and a lower ring wall (13) disposed on the outer edge of the lower shell plate (11); the upper air distribution shell (20) includes an upper shell plate (21), an upper air supply hole (22) disposed on the upper shell plate (21), and an upper ring wall (23) disposed on the outer edge of the upper shell plate (21); the outer ring flame cap (30) is riveted to the upper ring wall (23) and the lower ring wall (13) and forms an outer ring. A mixing chamber (60); the lower air supply hole (12) and the upper air supply hole (22) are spaced apart to form a central mixing chamber (70); the central transition shell (40) is installed above the upper air supply hole (22); the central flame cap (50) is riveted to the central transition shell (40) and surrounds to form a central secondary mixing chamber (71); the central secondary mixing chamber (71) is connected to the central mixing chamber (70); the outer ring flame cap (30) and the central flame cap (50) are provided with flame outlet holes and / or flame outlet grooves.

2. The multi-chamber sheet metal burner according to claim 1, characterized in that: The upper shell plate (21) and the lower shell plate (11) surround and form a plurality of gas distribution channels (61), which are connected between the central mixing chamber (70) and the outer ring mixing chamber (60).

3. The multi-chamber sheet metal burner according to claim 2, characterized in that: The gas distribution channels (61) are evenly arranged around the central mixing chamber (70); a secondary gas replenishment channel (62) is provided between the two gas distribution channels (61) and runs vertically through each other.

4. The multi-chamber sheet metal burner according to claim 1, characterized in that: The central transition shell (40) is riveted and fixed to the upper shell plate (21).

5. The multi-chamber sheet metal burner according to claim 1, characterized in that: The lower ring wall (13) is inclined outward above.

6. The multi-chamber sheet metal burner according to claim 1, characterized in that: An outwardly turned edge forming a gas-distributing baffle (24) is provided above the upper ring wall (23); the gas-distributing baffle (24) is located in the middle of the outer ring mixing chamber (60) near the upper ring wall (23).

7. The multi-chamber sheet metal burner according to claim 1, characterized in that: The lower air supply hole (12) is riveted to an air supply connecting cylinder (14).

Images