Small combustor with flame stabilizing structure

Abstract

The utility model relates to a small-sized burner with a flame stabilizing structure, which comprises a shell assembly, a mixed gas flow channel is formed in the shell assembly, the mixed gas flow channel is provided with a gas inlet port and a gas outlet port, a fire hole surface is arranged at the gas outlet port, and a flame stabilizing structure is arranged on the fire hole surface. A plurality of first fire hole sets are formed in the fire hole face in the length direction of the shell assembly, each first fire hole set comprises one or more long-strip-shaped first main flame holes and one or more round flame stabilizing holes, and the first main flame holes and the round flame stabilizing holes in the same set are arranged at intervals in the extending linear direction of the first main flame holes. According to the burner, the long-strip-shaped main flame holes are matched with the round flame stabilizing holes on the fire hole face, flames are more stable, the combustion efficiency of fuel gas is improved, and the burner has the advantages of being stable in flames and high in fuel gas utilization rate.

Description

Technical Field

[0001] The utility model relates to the field of burners, in particular to a small burner provided with a flame stabilizing structure. Background Art

[0002] The burner (also called fire grate) of the current gas water heater is usually of harmonica type. The flame from the fire grate of this structure has no flame stabilizing effect, so the flame will be relatively scattered, and there will be flame separation, which reduces the combustion efficiency of the burner for gas. The current burner structure is shown in Chinese patent document, patent number CN202221942283.8, which is a fire grate for burners, burners and water heaters, wherein the fire grate mainly includes a main flame hole portion, a plurality of long strip main flame holes are opened on the main flame hole portion, and flame stabilizing hole portions matched with the main flame hole portion are respectively provided on the two side walls thereof, and the flame of the burner is stabilized by the flame stabilizing hole portions, but since the overlapping length of two adjacent main flame holes is relatively large, during use, there will still be a phenomenon of fire transfer between the two adjacent main flame holes, affecting the stability of the burner flame. Therefore, the applicant provides a new solution to the above-mentioned prior art problems by improving and perfecting the prior art for consumers to choose and use. Summary of the invention

[0003] The utility model aims to provide a small burner with a flame stabilizing structure which has a simple and reasonable structure, is easy to install and has a stable structure.

[0004] A small burner with a flame stabilizing structure comprises a shell component, a mixed gas flow channel is formed inside the shell component, the mixed gas flow channel has an air inlet port and an air outlet port, a fire hole surface is arranged at the air outlet port, a plurality of first fire hole groups are provided on the fire hole surface along the length direction of the shell component, each first fire hole group comprises one or more first main flame holes in a long strip shape and one or more circular flame stabilizing holes, and the first main flame holes and the circular flame stabilizing holes in the same group are arranged at intervals from each other along the straight line direction in which the first main flame holes extend.

[0005] The purpose of the utility model can also be solved by the following technical measures:

[0006] As a more specific solution, the first fire hole group includes a first main flame hole and two circular flame stabilizing holes, and the first main flame hole is arranged between the two circular flame stabilizing holes.

[0007] As a further solution, the first flame hole group includes two first main flame holes and a circular flame stabilizing hole, and the circular flame stabilizing hole is arranged between the two first main flame holes.

[0008] As a further solution, the diameter of the circular flame stabilization hole is greater than or equal to the width of the first main flame hole.

[0009] As a further solution, a plurality of second fire hole groups are also provided on the fire hole surface. One or two groups of first fire hole groups are arranged at equal intervals between two adjacent second fire hole groups. Each second fire hole group includes two long strip-shaped second main flame holes. The two second main flame holes are arranged at intervals along the straight line direction of their extension and are arranged in a staggered manner with the adjacent first main flame holes.

[0010] As a further solution, the outer shell assembly includes a fire row outer shell body and a fire row inner shell body. The mixed gas flow channel is arranged on the fire row inner shell body. The fire row outer shell body is assembled and connected to the fire row inner shell body corresponding to the air outlet port and forms a flame stabilizing cavity with the fire row inner shell body. A plurality of circular auxiliary flame holes are arranged at intervals on the side wall of the fire row inner shell body corresponding to the flame stabilizing cavity.

[0011] As a further solution, the overall height of the outer shell assembly is H, and 40mm ≤ H ≤ 60mm.

[0012] As a further solution, the mixed gas flow channel has a "C"-shaped trend. From the air inlet port to the air outlet port direction, it sequentially includes a gas mixing section, a diffusing section, and a combustion section. The bottom of the gas mixing section arches upward to form a gas flow resistance point.

[0013] As a further solution, the gas flow resistance point includes a front flow resistance inclined surface and a rear flow resistance inclined surface;

[0014] The length of the front flow resistance inclined surface is greater than that of the rear flow resistance inclined surface;

[0015] The inclination of the front flow resistance inclined surface is greater than that of the rear flow resistance inclined surface;

[0016] An included angle ∠a is formed between the front flow resistance inclined surface and the rear flow resistance inclined surface, and 130° ≤ ∠a ≤ 150°.

[0017] As a further solution, the cross-section of the combustion section includes a first combustion cavity and a second combustion cavity. The width of the second combustion cavity is greater than that of the first combustion cavity, and a trumpet-shaped diffusing port is arranged between the second combustion cavity and the first combustion cavity. The first combustion cavity is communicated with the diffusing section, and the second combustion cavity is provided with an air outlet port.

[0018] The beneficial effects of the present utility model are as follows:

[0019] A small burner with a flame stabilizing structure of the present utility model. In this burner, the long strip-shaped main flame holes and the circular flame stabilizing holes on the fire hole surface cooperate with each other to make the flame more stable, improve the combustion efficiency of the gas, and have the advantages of stable flame and high gas utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of Embodiment 1 in the present utility model.

[0021] Figure 2 It is a schematic diagram of the structure of the first fire hole group and the second fire hole group in the utility model.

[0022] Figure 3 It is a schematic diagram of the exploded structure of the housing assembly in the present utility model.

[0023] Figure 4 It is a schematic diagram of the specific structure of the mixed fuel gas flow channel in the utility model.

[0024] Figure 5 It is a schematic diagram of the cross-sectional structure of the utility model.

[0025] Figure 6 This is a structural schematic diagram of Example 2 of the present utility model. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings and embodiments. Example

[0027] like Figures 1 to 5 As shown, a small burner with a flame stabilizing structure includes a shell component 1, a mixed gas flow channel 2 is formed inside the shell component 1, the mixed gas flow channel 2 has an air inlet port 201 and an air outlet port, a fire hole surface 202 is provided at the air outlet port, and a plurality of first fire hole groups A are provided on the fire hole surface 202 along the length direction of the shell component 1, each first fire hole group A includes one or more first main flame holes 3 in a long strip and one or more circular flame stabilizing holes 4, and the first main flame holes 3 and the circular flame stabilizing holes 4 in the same group are spaced apart from each other along the straight line direction in which the first main flame holes 3 extend.

[0028] This burner has a long first main flame hole 3 and a circular flame stabilizing hole 4 on the fire hole surface to make the flame more stable, improve the combustion efficiency of the gas, and has the advantages of stable flame and high gas utilization rate.

[0029] Specifically: the first fire hole group A includes a first main flame hole 3 and two circular flame stabilizing holes 4, the first main flame hole 3 is arranged between the two circular flame stabilizing holes 4, and the diameter of the circular flame stabilizing hole 4 is greater than the width of the first main flame hole 3; by surrounding a first main flame hole 3 with two circular flame stabilizing holes 4, the flame stabilizing effect can be improved.

[0030] On the fire hole surface 202, multiple groups of second fire hole groups B are also provided. One or two groups of first fire hole groups A are arranged at equal intervals between adjacent two groups of second fire hole groups B. Each group of second fire hole groups B includes two long strip-shaped second main flame holes 5. The two second main flame holes 5 are spaced from each other along the straight line direction of their extension, and are arranged in a staggered manner with the adjacent first main flame holes 3. The structure of the second main flame holes 5 is the same as that of the first main flame holes 3. After the second main flame holes 5 and the first main flame holes 3 are staggered, the overlapping length of the two can be reduced, thereby reducing the phenomenon of flame transmission.

[0031] The housing assembly 1 includes a fire row outer housing 11 and a fire row inner housing 12. The mixed gas flow channel 2 is arranged on the fire row inner housing 12. The fire row outer housing 11 is assembled and connected to the fire row inner housing 12 corresponding to the air outlet port, and a flame stabilizing cavity 13 is formed between the fire row outer housing 11 and the fire row inner housing 12. A plurality of circular auxiliary flame holes 6 are spacedly arranged on the side wall of the fire row inner housing 12 corresponding to the flame stabilizing cavity 13. The circular auxiliary flame holes 6 can also play a role in stabilizing the flame.

[0032] The overall height of the housing assembly 1 is H, and 40mm ≤ H ≤ 60mm. In this embodiment, the overall height of the housing assembly 1 is preferably between 44mm and 47mm.

[0033] The mixed gas flow channel 2 has a "C"-shaped trend. From the air inlet port 201 to the air outlet port direction, it successively includes a gas mixing section 21, a diffusing section 22, and a combustion section 23. The bottom of the gas mixing section 21 arches upward to form a gas flow resistance point 24. The gas flow resistance point 24 can draw and accelerate the air flow downward, making the gas dispersion effect better, introducing more air, and improving the combustion effect.

[0034] Specifically: The gas flow resistance point 24 includes a front flow resistance inclined surface 241 and a rear flow resistance inclined surface 242. The effect of drawing the air flow downward is realized through the front flow resistance inclined surface 241 and the rear flow resistance inclined surface 242.

[0035] When further limited, the length of the front flow resistance inclined surface 241 is greater than that of the rear flow resistance inclined surface 242.

[0036] The inclination of the front flow resistance inclined surface 241 is greater than that of the rear flow resistance inclined surface 242.

[0037] An included angle ∠a is formed between the front flow resistance inclined surface 241 and the rear flow resistance inclined surface 242, and 130° ≤ ∠a ≤ 150°. In this embodiment, the included angle ∠a of the housing assembly 1 is preferably 140°.

[0038] The cross-section of the combustion section 23 includes a first combustion chamber 231 and a second combustion chamber 232. The width of the second combustion chamber 232 is greater than that of the first combustion chamber 231, and a trumpet-shaped diffuser 233 is arranged between the second combustion chamber 232 and the first combustion chamber 231. The first combustion chamber 231 is connected to the diffuser section 22, and the second combustion chamber 232 is provided with an outlet port. This allows the combustion section 23 to gradually widen, reducing the pressure of the mixed gas, solving the problem of the mixed gas airflow swaying left and right and the flame swaying left and right, and making the flame combustion more stable. Example

[0039] The difference between the second embodiment and the first embodiment is that: Figure 6 As shown, the first flame hole group A includes two first main flame holes 3 and a circular flame stabilizing hole 4 , and the circular flame stabilizing hole 4 is arranged between the two first main flame holes 3 .

[0040] The above is a preferred embodiment of the utility model, which shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements fall within the scope of the utility model to be protected, and the scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A small burner with a flame stabilizing structure, comprising a shell component (1), wherein a mixed gas flow channel (2) is formed inside the shell component (1), wherein the mixed gas flow channel (2) has an air inlet port (201) and an air outlet port, wherein a fire hole surface (202) is provided at the air outlet port, wherein a plurality of first fire hole groups (A) are provided on the fire hole surface (202) along the length direction of the shell component (1), wherein the first fire hole group (A) is provided at the first fire hole surface (202 ... : Each first flame hole group (A) includes one or more elongated first main flame holes (3) and one or more circular flame stabilizing holes (4). The first main flame holes (3) and the circular flame stabilizing holes (4) in the same group are arranged at intervals along the straight line direction in which the first main flame holes (3) extend.

2. A small burner with a flame stabilizing structure according to claim 1, characterized in that: The first flame hole group (A) includes one first main flame hole (3) and two circular flame stabilizing holes (4), and the first main flame hole (3) is arranged between the two circular flame stabilizing holes (4).

3. A small burner with a flame stabilizing structure according to claim 1, characterized in that: The first flame hole group (A) includes two first main flame holes (3) and one circular flame stabilizing hole (4), and the circular flame stabilizing hole (4) is arranged between the two first main flame holes (3).

4. A small burner with a flame stabilizing structure according to claim 1, characterized in that: The diameter of the circular flame stabilizing hole (4) is greater than or equal to the width of the first main flame hole (3).

5. A small burner with a flame stabilizing structure according to claim 2, characterized in that: Multiple groups of second flame hole groups (B) are also provided on the flame hole surface (202). One or two groups of first flame hole groups (A) are arranged at equal intervals between adjacent two groups of second flame hole groups (B). Each group of second flame hole groups (B) includes two elongated second main flame holes (5). The two second main flame holes (5) are arranged at intervals along the straight line direction in which they extend and are arranged in a staggered manner with the adjacent first main flame holes (3).

6. A small burner with a flame stabilizing structure according to claim 1, characterized in that: The housing assembly (1) includes a burner outer housing (11) and a burner inner housing (12). The mixed gas flow channel (2) is arranged on the burner inner housing (12). The burner outer housing (11) is assembled and connected to the burner inner housing (12) corresponding to the gas outlet port, and a flame stabilizing cavity (13) is formed between the burner outer housing (11) and the burner inner housing (12). A plurality of circular auxiliary flame holes (6) are arranged at intervals on the side wall of the burner inner housing (12) corresponding to the flame stabilizing cavity (13).

7. A small burner with a flame stabilizing structure according to claim 1, characterized in that: The overall height of the housing assembly (1) is H, and 40mm ≤ H ≤ 60mm.

8. A small burner with a flame stabilizing structure according to claim 1, characterized in that: The mixed gas flow channel (2) has a "C"-shaped trend. From the intake port (201) to the outlet port direction, it sequentially includes a gas mixing section (21), a diffusing section (22), and a combustion section (23). The bottom of the gas mixing section (21) arches upward to form a gas flow resistance point (24).

9. A small burner with a flame stabilizing structure according to claim 8, characterized in that: The gas flow resistance point (24) includes a front flow resistance inclined surface (241) and a rear flow resistance inclined surface (242); The length of the front flow resistance inclined surface (241) is greater than that of the rear flow resistance inclined surface (242); The inclination of the front flow resistance inclined surface (241) is greater than that of the rear flow resistance inclined surface (242); An included angle ∠a is formed between the front flow resistance inclined surface (241) and the rear flow resistance inclined surface (242), and 130° ≤ ∠a ≤ 150°.

10. A small burner with a flame stabilizing structure according to claim 8, characterized in that: The cross-section of the combustion section (23) includes a first combustion cavity (231) and a second combustion cavity (232). The width of the second combustion cavity (232) is greater than that of the first combustion cavity (231), and a trumpet-shaped diffusing port (233) is arranged between the second combustion cavity (232) and the first combustion cavity (231). The first combustion cavity (231) is communicated with the diffusing section (22), and the second combustion cavity (232) is provided with an outlet port.

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