A flame stabilizing cover

Abstract

The present invention relates to a flame-stabilizing fire cover, comprising a cylindrical fire cover body, the inner cavity of which forms a gas mixing cavity, and a main fire hole and a flame-stabilizing hole are respectively opened on the peripheral wall thereof, the main fire hole and the flame-stabilizing hole are respectively communicated with the above-mentioned gas mixing cavity, the flame-stabilizing hole is arranged at intervals from the main fire hole and is located below the main fire hole, the bottom wall of the outer end of the channel of the flame-stabilizing hole is notched and suspended to form a flame-stabilizing open section. Compared with the prior art, the flame-stabilizing hole in the present invention can heat the root of the main fire hole, and better play the effect of stabilizing the flame, and the bottom wall of the outer end of the channel of the flame-stabilizing hole is notched and suspended to form a flame-stabilizing open section, by setting the flame-stabilizing open section, not only can the wall-adhering effect of the overflow liquid be blocked, thereby preventing the overflow liquid from flowing into the channel of the flame-stabilizing hole, and completely preventing the overflow liquid from clogging the flame-stabilizing hole, but also the flame-stabilizing open section is provided, so that the flame-stabilizing airflow in the channel of the flame-stabilizing hole can be expanded and decelerated in the flame-stabilizing open section, thereby improving the flame-stabilizing effect.

Description

Technical Field

[0001] The invention relates to the field of gas stoves, and in particular to a flame stabilizing cover. Background Art

[0002] In order to ensure efficient and normal combustion, the gas burner generally needs to stabilize the main fire. In the prior art, flame stabilization is generally performed by inserting flame stabilization holes next to the main fire hole, such as: Chinese invention patent with application number 201310196943.1 (publication number CN10418037A) discloses a burner, which includes an ejector mixer, an external fire ejector nozzle, an internal fire ejector nozzle, an airflow distribution chamber, an external burner head, and an internal burner head. The external burner head is set as an inner and outer double cone surface, and the vertices of the inner and outer cone surfaces are located at the highest point of the horizontal position of the outer burner head ring. The outer burner head is provided with an equal number of strip-shaped outer ring main fire grooves and outer ring flame stabilization grooves, and the inner burner head is provided with an equal number of inner main fire holes and inner flame stabilization holes. This flame stabilization method has a poor flame stabilization effect. When overflow occurs, the flame stabilization holes are easily blocked, resulting in flame separation and inability to burn stably. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a flame stabilizing fire cover with good flame stabilizing effect and flame stabilizing holes that are not easily blocked in view of the existing technology.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a flame-stabilizing fire cover, including a cylindrical fire cover body, the inner cavity of the fire cover body forms an air mixing chamber, and a main fire hole and a flame-stabilizing hole are respectively opened on the surrounding wall, and the main fire hole and the flame-stabilizing hole are respectively communicated with the above-mentioned air mixing chamber, and it is characterized in that the flame-stabilizing hole is spaced apart from the main fire hole and is located below the main fire hole, and the bottom wall of the outer end of the channel of the flame-stabilizing hole is notched and suspended to form a flame-stabilizing open section.

[0005] Preferably, an auxiliary flame stabilizing hole communicating with the gas mixing chamber is provided on the peripheral wall of the fire cover body, the hole of the auxiliary flame stabilizing hole is communicated with the hole of the flame stabilizing hole, and the extension directions of the two intersect. The auxiliary flame stabilizing hole can effectively reduce the flow rate of the flame stabilizing airflow in the hole of the flame stabilizing hole, thereby further improving the flame stabilizing effect.

[0006] Preferably, the auxiliary flame stabilizing hole extends downwardly from the inside to the outside and leads to the flame stabilizing open section. Through the cross impact of the airflow in the auxiliary flame stabilizing hole, the flame stabilizing fire in the flame stabilizing hole can be spread under the main fire hole, greatly enhancing the flame stabilizing effect of the flame stabilizing hole on the main fire hole.

[0007] Preferably, the port of the auxiliary flame stabilizing hole communicating with the flame stabilizing open section is located at the outer end of the flame stabilizing open section, so that the flame stabilizing fire in the flame stabilizing hole can spread over a larger area below the main fire hole, further enhancing the flame stabilizing effect on the main fire hole.

[0008] Preferably, the angle between the extension direction of the auxiliary flame stabilizing hole and the extension direction of the flame stabilizing hole is 50° to 70°. In this way, the flow rate of the flame stabilizing airflow in the flame hole channel can be better reduced by the airflow in the auxiliary flame stabilizing hole, and the supply of secondary air in the flame stabilizing hole channel can be increased through the mutual impact and vortex of the two airflows, thereby promoting the stable combustion of the flame stabilizing fire in the flame stabilizing hole.

[0009] Preferably, the length ratio of the flame stabilizing open section to the remaining portion of the channel of the flame stabilizing hole is 1-2:1, so that the flame stabilizing airflow in the channel of the flame stabilizing hole can be better expanded and decelerated in the flame stabilizing open section.

[0010] Preferably, the cross-section of the flame-stabilizing open section is semicircular.

[0011] The above-mentioned flame-stabilizing open section can be implemented in a variety of specific ways. Preferably, the lower end of the side wall of the fire cover body is recessed inwardly from bottom to top along the circumferential direction. When part of the channel of the flame-stabilizing hole is exposed, the side wall of the fire cover body is recessed inwardly from bottom to top along the extension direction of the channel of the flame-stabilizing hole to expose the outer end of the channel of the flame-stabilizing hole to form the above-mentioned flame-stabilizing open section.

[0012] Preferably, an ignition hole communicating with the above-mentioned gas mixing chamber is also provided on the peripheral wall of the fire cover body, and the channel of the ignition hole extends in the horizontal direction.

[0013] Preferably, the aperture of the inner end of the channel of the ignition hole is smaller than the aperture of the outer end thereof, so that the airflow in the ignition hole can expand and decrease in pressure from the inside to the outside, so that the flame in the ignition hole burns stably and the ignition success rate is improved.

[0014] Compared with the prior art, the advantages of the present invention are: the flame stabilizing hole is arranged below the main fire hole, so that the main fire hole can be heated, which plays a better role in stabilizing the flame, and the bottom wall of the outer end of the channel of the flame stabilizing hole is notched and suspended to form a flame stabilizing open section. In this way, by setting the flame stabilizing open section, not only can the wall-sticking effect of the overflow liquid be blocked, thereby preventing the overflow liquid from flowing into the channel of the flame stabilizing hole and completely avoiding the overflow liquid from clogging the flame stabilizing hole, but also by setting the flame stabilizing open section, the flame stabilizing airflow in the channel of the flame stabilizing hole can be expanded, reduced in pressure and decelerated in the flame stabilizing open section, thereby improving the flame stabilizing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of a flame stabilizing cover in an embodiment of the present invention;

[0016] Figure 2 for Figure 1 A schematic diagram of the structure in another direction;

[0017] Figure 3A top view of a flame stabilizing cover in an embodiment of the present invention;

[0018] Figure 4 for Figure 3 Cross-sectional view along AA direction;

[0019] Figure 5 for Figure 3 Cross-sectional view along direction BB;

[0020] Figure 6 for Figure 3 Cross-sectional view along CC direction. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below with reference to the accompanying drawings.

[0022] like Figures 1 to 6 As shown, a flame-stabilizing fire cover, a cylindrical fire cover body 1, the inner cavity of the fire cover body 1 forms a gas mixing cavity 10, and a main fire hole 3 and a flame-stabilizing hole 4 are respectively opened on the peripheral wall, and the main fire hole 3 and the flame-stabilizing hole 4 are respectively communicated with the above-mentioned gas mixing cavity 10. In this embodiment, the fire cover is an inner ring fire cover, and a top cover 2 is sealed on the top, and the top cover 2 and the inner cavity of the fire cover body 1 surround the above-mentioned gas mixing cavity 10.

[0023] One side of the top cover 2 extends outward to form a protective eaves 21 integrally formed with the top cover 2, and an ignition hole 6 is provided on the side wall of the ignition cover body 1 below the protective eaves 21. The channel of the ignition hole 6 extends in the horizontal direction, and the aperture of the inner end of the channel of the ignition hole 6 is smaller than the aperture of the outer end thereof, so that the airflow in the ignition hole 6 can be expanded and decelerated from the inside to the outside, thereby promoting stable combustion of the flame in the ignition hole 6 and improving the ignition success rate.

[0024] Furthermore, the flame stabilizing hole 4 is spaced apart from the main fire hole 3 and is located below the main fire hole 3. The channels of the flame stabilizing hole 4 and the main fire hole 3 extend upward from the inside to the outside in the peripheral wall of the fire cover body 1, and the angles formed by the central axes of the channels of the two and the horizontal plane are close. The bottom wall of the channel of the flame stabilizing hole 4 is notched at the outer end and is suspended to form a flame stabilizing open section 41. In this embodiment, the lower end of the side wall of the fire cover body 1 is concave inward from bottom to top along the circumferential direction. When part of the channel of the flame stabilizing hole 4 is exposed, the side wall of the fire cover body 1 is concave inward from bottom to top along the extension direction of the channel of the flame stabilizing hole 4 to expose the outer end of the channel of the flame stabilizing hole 4 to form the above-mentioned flame stabilizing open section 41. Specifically, the fire cover body 1 includes an upper ring body 11 and a lower ring body 12 with a smaller diameter than the upper ring body 11, and an interface annular surface 13 inclined upward from inside to outside is arranged between the upper ring body 11 and the lower ring body 12. One end of the channel of the flame stabilizing hole 4 opens on the inner ring surface of the lower ring body 12, and the other end opens on the upper edge of the interface annular surface 13, and the channel at its outer end is exposed on the interface annular surface 13 to form the above-mentioned flame stabilizing open section 41.

[0025] As can be seen from the above, in the present invention, the flame stabilizing hole 4 is arranged below the main fire hole 3, so that the main fire hole 3 can be heated, and the flame stabilizing effect can be better played, and the bottom wall of the outer end of the channel of the flame stabilizing hole 4 is notched and suspended to form a flame stabilizing open section 41. By setting the flame stabilizing open section 41, not only can the wall-adhering effect of the overflow liquid be blocked, thereby preventing the overflow liquid from flowing into the channel of the flame stabilizing hole 4 and completely preventing the overflow liquid from clogging the flame stabilizing hole 4, but also the flame stabilizing open section 41 can be set, so that the flame stabilizing airflow in the channel of the flame stabilizing hole 4 can be expanded and decelerated in the flame stabilizing open section 41, thereby improving the flame stabilizing effect.

[0026] Furthermore, an auxiliary flame stabilizing hole 5 communicating with the above-mentioned gas mixing chamber 10 is also provided on the peripheral wall of the fire cover body 1, and the channel of the auxiliary flame stabilizing hole 5 is communicated with the channel of the above-mentioned flame stabilizing hole 4, and the extension directions of the two intersect. By providing the auxiliary flame stabilizing hole 5, the speed of the flame stabilizing airflow in the channel of the flame stabilizing hole 4 can be effectively reduced, thereby further improving the flame stabilizing effect. Preferably, the angle α formed by the extension direction of the channel of the auxiliary flame stabilizing hole 5 and the extension direction of the channel of the flame stabilizing hole 4 is 60° to 70° (α is 65° in the present embodiment), the length ratio of the flame stabilizing opening section 41 to the remaining part of the channel of the flame stabilizing hole 4 is 1 to 2:1, and the cross-section of the flame stabilizing opening section 41 is semicircular.

[0027] In addition, in order to further enhance the flame stabilizing effect of the flame stabilizing hole 4 on the main fire hole 3, the channel of the auxiliary flame stabilizing hole 5 extends downward from the inside to the outside and leads to the above-mentioned flame stabilizing open section 41. In this way, through the cross impact of the airflow in the auxiliary flame stabilizing hole 5, the flame stabilizing fire in the flame stabilizing hole 4 can be spread out below the main fire hole 3, which greatly enhances the flame stabilizing effect of the flame stabilizing hole 4 on the main fire hole 3. Preferably, the port 51 through which the channel of the auxiliary flame stabilizing hole 5 communicates with the flame stabilizing open section 41 is located at the outer end of the flame stabilizing open section 41. Thereby, the spreading area of ​​the flame stabilizing fire in the flame stabilizing hole 4 below the main fire hole 3 can be larger, further enhancing the flame stabilizing effect on the main fire hole 3.

Claims

1. A flame-stabilizing fire cover, comprising a cylindrical fire cover body (1), the inner cavity of the fire cover body (1) forming a gas mixing cavity (10), the peripheral wall of which is respectively provided with a main fire hole (3) and a flame-stabilizing hole (4), the main fire hole (3) and the flame-stabilizing hole (4) being respectively communicated with the gas mixing cavity (10), characterized in that: The flame stabilizing hole (4) is spaced apart from the main fire hole (3) and is located below the main fire hole (3); the bottom wall of the outer end of the hole of the flame stabilizing hole (4) is notched and suspended to form a flame stabilizing open section (41); The lower end of the side wall of the fire cover body (1) is recessed inwardly from bottom to top along the circumferential direction, and when part of the hole of the flame stabilizing hole (4) is exposed, the side wall of the fire cover body (1) is recessed inwardly from bottom to top along the extension direction of the hole of the flame stabilizing hole (44) so ​​that the outer end of the hole of the flame stabilizing hole (4) is exposed to form the above-mentioned flame stabilizing open section (41); An auxiliary flame stabilizing hole (5) communicating with the gas mixing chamber (10) is also provided on the peripheral wall of the fire cover body (1). The hole of the auxiliary flame stabilizing hole (5) extends downwardly from the inside to the outside and leads to the flame stabilizing open section (41).

2. The flame stabilizing cover according to claim 1, characterized in that: The port (51) through which the hole of the auxiliary flame stabilizing hole (5) communicates with the flame stabilizing open section (41) is located at the outer end of the flame stabilizing open section (41).

3. The flame stabilizing cover according to claim 1, characterized in that: The angle formed by the extension direction of the hole channel of the auxiliary flame stabilizing hole (5) and the extension direction of the hole channel of the flame stabilizing hole (4) is 50° to 70°.

4. The flame stabilizing cover according to any one of claims 1 to 3, characterized in that: The length ratio of the flame stabilizing open section (41) to the remaining portion of the channel of the flame stabilizing hole (4) is 1-2:

1.

5. The flame stabilizing cover according to any one of claims 1 to 3, characterized in that: The cross section of the flame stabilizing open section (41) is semicircular.

6. The flame stabilizing cover according to any one of claims 1 to 3, characterized in that: An ignition hole (6) communicating with the gas mixing chamber (10) is also provided on the peripheral wall of the fire cover body (1), and the channel of the ignition hole (6) extends in the horizontal direction.

7. The flame stabilizing cap according to claim 6, characterized in that: The hole diameter of the inner end of the hole channel of the ignition hole (6) is smaller than the hole diameter of the outer end thereof.

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