Central fire cover structure for furnace end

Abstract

The utility model relates to a central fire cover structure for a furnace end, which comprises an outer shell, an inner shell and a bottom plate, both the outer shell and the inner shell are provided with air hole structures, the outer edge of the outer shell is provided with a first pressing part, the inner shell is arranged in the outer shell and is provided with a second pressing part abutted against the first pressing part, and an air cavity is formed between the outer shell and the inner shell. The bottom plate is provided with a third pressing part which abuts against the second pressing part, an air inlet communicated with the interior of the inner shell is formed in the bottom plate, and the outer edge of the first pressing part is bent inwards and is riveted to the bottom of the third pressing part. The center fire cover is composed of an outer shell, an inner shell and a bottom plate, the inner shell is pressed by the bottom plate, the outer shell is riveted with the bottom plate for fixation, and the problems of tempering and detonation are solved through the gas distribution effect of the inner shell; in addition, the structure adopted by the center fire cover has the advantages of being convenient to produce and reasonable in structural design.

Description

Technical Field

[0001] The utility model relates to a central burner cap structure for a burner head.

Background Art

[0002] At present, the burner heads on the market usually have an outer ring burner cap and a central burner cap. Generally, the structure of the central burner cap is formed by casting iron or made of a whole piece of copper. With the rapid development of the burner head industry, a central burner cap made of sheet metal material appears on the market. It is popular in the market because of its light structure, easy processing and forming, and less production pollution. However, with the popularization of this kind of central burner cap in the market, its disadvantages gradually emerge. At present, the sheet metal central burner cap on the market has the problems of flashback and deflagration noise.

[0003] Therefore, it is necessary to make further improvements to it.

Content of the Utility Model

[0004] The purpose of the utility model is to overcome the above problems. We provide a central burner cap structure for a burner head. The central burner cap adopting this structure solves the problems of flashback and deflagration noise.

[0005] To achieve the above purpose, the utility model provides a central burner cap structure for a burner head, which includes an outer shell, an inner shell and a bottom plate. Pore structures are provided on both the outer shell and the inner shell. A first pressing portion is provided on the outer edge of the outer shell. The inner shell is arranged inside the outer shell and has a second pressing portion that abuts against the first pressing portion. An air cavity is formed between the outer shell and the inner shell. The bottom plate has a third pressing portion that abuts against the second pressing portion. An air inlet communicating with the inside of the inner shell is opened on the bottom plate. The outer edge of the first pressing portion bends inwards and is riveted to the bottom of the third pressing portion.

[0006] In one or more embodiments, the outer edge of the third pressing portion is flush with the outer edge of the second pressing portion.

[0007] In one or more embodiments, the outer shell, the inner shell and the bottom plate are all formed by sheet metal stamping.

[0008] In one or more embodiments, the bottom plate includes a fixing portion and a third pressing portion. There is a flanging and bending portion between the fixing portion and the third pressing portion. The air inlet is opened at the middle position of the fixing portion. Mounting holes are provided on the fixing portion.

[0009] In one or more embodiments, the pore structures are provided on the side walls of the outer shell and the inner shell. The pore structure is composed of a plurality of air outlet holes evenly distributed in the circumferential direction.

[0010] In one or more embodiments, the top of the outer shell is recessed to form a first fitting recess, and the top of the inner shell is recessed to form a second fitting recess. The upper end surface of the second fitting recess fits with the lower end surface of the first fitting recess.

[0011] The effects of the present utility model compared with the background technology are as follows: The central burner cap is composed of an outer shell, an inner shell and a bottom plate. The inner shell is pressed by the bottom plate, and the outer shell is fixed by riveting the bottom plate. The gas distribution function of the inner shell solves the problems of flashback and deflagration. In addition, the structure adopted by the central burner cap has the advantages of convenient production and reasonable structural design.

Description of the Drawings

[0012] Figure 1 It is a schematic structural view of the central burner cap of this embodiment;

[0013] Figure 2 It is a cross-sectional view of the central burner cap of this embodiment.

Specific Embodiments

[0014] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The function of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it should not be construed as a limitation on the protection scope of the present utility model.

[0015] Refer to the attached Figure 1-2 , this application provides a central burner cap structure for a stove head, which includes an outer shell 1, an inner shell 2 and a bottom plate 3. The outer shell and the inner shell are both provided with a pore structure. Specifically, the pore structure is provided on the side walls of the outer shell 1 and the inner shell 2, and the pore structure is composed of a plurality of evenly circumferentially distributed air outlet holes 10. The outer edge of the outer shell 1 is provided with a first pressing portion 4, and the inner shell 2 is arranged inside the outer shell and has a second pressing portion 5 that abuts against the first pressing portion 4. Specifically, the upper end surface of the second pressing portion abuts against the lower end surface of the first pressing portion. An air cavity 6 is formed between the outer shell 1 and the inner shell 2. The function of the inner shell can buffer the input gas and evenly discharge the gas into the air cavity, which can effectively reduce the phenomena of deflagration and flashback. The bottom plate 3 has a third pressing portion 31 that abuts against the second pressing portion 5. An air inlet 7 communicating with the inside of the inner shell 2 is opened on the bottom plate 3. The outer edge of the first pressing portion is bent inward and riveted to the bottom of the third pressing portion 31. By riveting the first pressing portion to the third pressing portion, the outer shell, the inner shell and the bottom plate can be fixed together, and the bottom plate can improve the overall structural strength of the central burner cap and is beneficial to the installation of the central burner cap.

[0016] The outer edge of the third pressing portion 31 is flush with the outer edge of the second pressing portion 5, ensuring that when the first riveting portion is riveted, it contacts the outer edges of the second pressing portion and the third pressing portion, and the fixing effect on the inner shell and the bottom plate is better.

[0017] The outer shell 1, the inner shell 2 and the bottom plate 3 are all formed by sheet metal stamping. The technology of sheet metal stamping is mature, and they can be processed and produced separately, with high production efficiency. Only riveting and fixing are required after assembly, and no pollutants are generated during the production process.

[0018] The bottom plate 3 includes a fixing portion 32 and a third pressing portion 31. There is a flanging and bending portion 33 between the fixing portion and the third pressing portion. The bending portion can improve the overall structural strength of the bottom plate. The air inlet 7 is opened at the middle position of the fixing portion 32. Installation holes 9 are provided on the fixing portion for screw connection to facilitate the installation and fixation of the central burner cap.

[0019] The top of the outer shell 1 is recessed to form a first mating recess 101, and the top of the inner shell 2 is recessed to form a second mating recess 201. The upper end surface of the second mating recess fits with the lower end surface of the first mating recess. Through the mating connection of the first mating recess and the second mating recess, the structural tightness between the outer shell and the inner shell can be improved, which helps to enhance the overall structural strength of the central burner cap.

[0020] Certainly, the present utility model is not limited to the above embodiments. Those skilled in the art can make equivalent deformations or substitutions without departing from the spirit of the present utility model, and these equivalent deformations and substitutions are all included within the scope defined by the claims of this application.

Claims

1. A central burner cap structure for a stove head, characterized in that: It includes an outer shell (1), an inner shell (2) and a bottom plate (3). Both the outer shell and the inner shell are provided with air hole structures. A first pressing portion (4) is provided on the outer edge of the outer shell (1). The inner shell (2) is arranged inside the outer shell and has a second pressing portion (5) that abuts against the first pressing portion (4). An air cavity (6) is formed between the outer shell (1) and the inner shell (2). The bottom plate (3) has a third pressing portion (31) that abuts against the second pressing portion (5). An air inlet (7) communicating with the inside of the inner shell (2) is opened on the bottom plate (3). The outer edge of the first pressing portion is bent inward and riveted to the bottom of the third pressing portion (31).

2. The central burner cap structure for a stove burner according to claim 1, wherein: The outer edge of the third pressing portion (31) is flush with the outer edge of the second pressing portion (5).

3. A center burner cap structure for a stove head according to claim 1, characterized in that On: The outer shell (1), the inner shell (2) and the bottom plate (3) are all formed by sheet metal stamping.

4. A central burner cap structure for a stove head according to claim 1, characterized in that: The bottom plate (3) includes a fixing portion (32) and a third pressing portion (31). There is a flanging and bending portion (33) between the fixing portion and the third pressing portion. The air inlet (7) is opened at the middle position of the fixing portion (32), and mounting holes (9) are provided on the fixing portion.

5. The central burner cap structure for a stove head according to claim 1, characterized in that: The side walls of the outer shell (1) and the inner shell (2) are provided with the air hole structures. The air hole structures are composed of a plurality of air outlet holes (10) evenly distributed circumferentially.

6. The central burner cap structure for a stove head according to claim 1, characterized in that: The top of the outer shell (1) is recessed to form a first mating recess (101), and the top of the inner shell (2) is recessed to form a second mating recess (201). The upper end surface of the second mating recess fits with the lower end surface of the first mating recess.

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