Burner with multi-channel rotary gas supply structure

Abstract

The utility model discloses a combustor with a multi-channel rotary gas supply structure. The combustor comprises a furnace end main body, a central fire cover and an outer ring fire cover, the outer ring gas supply seat and the outer ring gas mixing cavity are of an annular cavity structure and are spaced up and down; a spiral gas supply channel is arranged between the outer ring gas supply seat and the outer ring gas mixing cavity; the number of the spiral gas supply channels is at least two, and the flowing rotation directions of fuel gas between the spiral gas supply channels are the same. The spiral gas supply channel is arranged between the outer ring gas supply seat and the outer ring gas mixing cavity, so that rotary gas flow can be formed to gradually spirally rotate and rise and supply gas to the outer ring gas supply seat, and when gas rotates and flows forwards, the length of a flowing path of the gas in the outer ring gas supply seat can be increased, so that the mixing ratio of fuel and air is effectively increased, and the gas supply efficiency is improved. And the gas mixing degree and the combustion efficiency of the combustor are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of combustion stove accessories, in particular to a burner with a multi-channel rotary air supply structure. Background Art

[0002] As the primary combustion element of a gas stove, burner efficiency has always been a key design and research focus for manufacturers. Existing gas system burners typically improve the fuel-air mixture ratio and combustion efficiency by extending the gas delivery path within the ejector tube. However, this burner structure offers limited improvement in combustion efficiency. Therefore, a low-cost, simple burner structure is sought that can better enhance the gas mixing ratio and combustion efficiency. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a burner with a multi-channel rotating air supply structure.

[0004] An embodiment of the utility model solves the technical problem by adopting a technical solution: a burner with a multi-channel rotary gas supply structure, comprising: a burner body, a central fire cover and an outer ring fire cover;

[0005] The burner body is formed as a whole by sand casting, and is provided with a central ejector pipe, a central gas mixing chamber and a central gas supply seat which are connected in sequence, and an outer ring ejector pipe, an outer ring gas mixing chamber and an outer ring gas supply seat which are connected in sequence; the central fire cover is placed above the central gas supply seat; the outer ring fire cover is placed above the outer ring gas supply seat;

[0006] The outer ring air supply seat and the outer ring air mixing chamber are annular chamber structures, spaced up and down; a spiral air supply channel is provided between the outer ring air supply seat and the outer ring air mixing chamber; at least two spiral air supply channels are provided, and the flow direction of the gas between the spiral air supply channels is the same.

[0007] Optionally, there are at least three spiral air supply channels, which are evenly arranged along the circumference.

[0008] Optionally, two adjacent spiral air supply channels are spaced apart to form a secondary air channel.

[0009] Optionally, the spiral air supply channel is provided with a blocking protrusion.

[0010] Optionally, the central air mixing chamber is located below the outer ring air mixing chamber; and below the central air mixing chamber is an arc-shaped central guide surface.

[0011] Optionally, a U-shaped central gas supply channel is provided at the output end of the central gas mixing chamber, which can output gas from both ends toward the central gas supply seat.

[0012] The beneficial effects of this utility model include the use of sand casting to form an integrated burner head structure with complex gas channels. Specifically, a spiral gas supply channel is provided between the outer ring gas supply seat and the outer ring gas mixing chamber, which can form a rotating airflow that gradually spirals upward and supplies gas to the outer ring gas supply seat. As the gas flows forward, the length of the gas flow path within the outer ring gas supply seat is increased, thereby effectively improving the fuel-air mixing ratio, effectively enhancing the gas mixing degree and combustion efficiency of the burner.

[0013] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0015] Figure 1 This is a schematic diagram of the structure of the burner of the utility model;

[0016] Figure 2 for Figure 1 A structural diagram of the burner from another perspective;

[0017] Figure 3 for Figure 1 A cross-sectional view of the middle burner at the outer ring ejector tube;

[0018] Figure 4 for Figure 1 A cross-sectional view of the middle burner at the center ejector tube;

[0019] Figure 5 It is a cross-sectional view of the burner at the outer ring ejector tube in another embodiment.

[0020] Description of main component symbols:

[0021] 10. Burner body; 11. Central ejector tube; 12. Central gas mixing chamber; 121. Central guide surface; 122. Central gas supply channel; 13. Central gas supply seat; 14. Outer ring ejector tube; 15. Outer ring gas mixing chamber; 16. Outer ring gas supply seat; 17. Spiral gas supply channel; 18. Secondary air channel; 19. Blocking convex part; 20. Central fire cover; 30. Outer ring fire cover. DETAILED DESCRIPTION

[0022] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0023] In the description of this utility model, "above," "below," and "within" are understood to be exclusive of the number indicated, while "above," "below," and "within" are understood to be inclusive of the number indicated. The use of "first" and "second" is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, or implicitly specifying the number or order of the technical features indicated.

[0024] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0025] In this utility model, unless otherwise expressly defined, terms such as "disposed," "installed," and "connected" should be interpreted broadly. For example, they may refer to direct connection or indirect connection through an intermediate medium; fixed connection or detachable connection or integral molding; mechanical connection; internal communication between two components or interaction between two components. Those skilled in the art can reasonably determine the specific meanings of these terms in this utility model based on the specific content of the technical solution.

[0026] Example

[0027] Reference Figures 1 to 5 The utility model proposes a burner with a multi-channel rotary gas supply structure, comprising: a burner body 10, a central fire cover 20 and an outer ring fire cover 30;

[0028] The burner body 10 is formed as a whole by sand casting and is provided with a central ejector pipe 11, a central gas mixing chamber 12 and a central gas supply seat 13 which are connected in sequence, and an outer ring ejector pipe 14, an outer ring gas mixing chamber 15 and an outer ring gas supply seat 16 which are connected in sequence; a central fire cover 20 is placed above the central gas supply seat 13; and an outer ring fire cover 30 is placed above the outer ring gas supply seat 16;

[0029] The outer ring air supply seat 16 and the outer ring air mixing chamber 15 are annular chamber structures, separated by upper and lower parts; a spiral air supply channel 17 is provided between the outer ring air supply seat 16 and the outer ring air mixing chamber 15; there are at least two spiral air supply channels 17, and the flow direction of the gas between the spiral air supply channels 17 is the same.

[0030] In the present invention, sand casting is used as an integral part to form an integrated burner head structure with complex gas channels. Specifically, a spiral gas supply channel 17 is provided between the outer ring gas supply seat 16 and the outer ring gas mixing chamber 15, which can form a rotating airflow that gradually spirals upward and supplies gas to the outer ring gas supply seat 16. As the gas flows forward, the length of the gas flow path within the outer ring gas supply seat 16 is increased, thereby effectively improving the fuel and air mixing ratio, and effectively enhancing the gas mixing degree and combustion efficiency of the high-pressure burner.

[0031] In this embodiment, in order to achieve a more uniform multi-channel spiral mixing effect of the rotating airflow, at least three spiral air supply channels 17 are provided and are evenly arranged along the circumferential direction.

[0032] In this embodiment, two adjacent spiral air supply channels 17 are spaced apart to form a secondary air channel 18. The secondary air channel 18 can conveniently supply secondary air to the area between the central fire cover 20 and the outer ring fire cover 30.

[0033] In this example, see Figure 5 The spiral air supply channel 17 is provided with a blocking convex portion 19. The blocking convex portion 19 can form a local turbulence of the gas in the spiral mixing channel, and locally enhance the mixing effect of the gas and air while maintaining the spiral flow of the airflow.

[0034] In this embodiment, the central gas mixing chamber 12 is located below the outer annular gas mixing chamber 15; below the central gas mixing chamber 12 is an arc-shaped central guide surface 121. The outer annular gas mixing chamber 15 utilizes the base plate of the burner body 10, the space below the central gas mixing chamber 12, and the wall surface at the output end of the central ejector tube 11 to form a rectangular block-shaped chamber structure. This provides a mixing chamber for the gas at the output end of the central ejector tube 11, enhancing the gas mixing effect.

[0035] Furthermore, a U-shaped central gas supply channel 122 is provided at the output end of the central mixing chamber 12, which can output gas from both ends to the central gas supply base 13. The central gas supply channel 122 splits the gas into two streams, which are then rotated and output toward the two ends of the central gas supply. The gas then impacts and mixes again before being sent upward to the central fire cover 20, effectively improving the mixing effect of the gas in the central gas supply base 13.

[0036] Of course, the present invention is not limited to the above-mentioned embodiments. Those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications and substitutions are all included in the scope defined by the claims of this application.

Claims

1. A burner with a multi-channel rotating air supply structure, characterized in that: include: Burner body (10), center fire cover (20) and outer ring fire cover (30); The burner head body (10) is formed as a whole by sand casting, and is provided with a central ejector pipe (11), a central gas mixing chamber (12) and a central gas supply seat (13) which are connected in sequence, and an outer ring ejector pipe (14), an outer ring gas mixing chamber (15) and an outer ring gas supply seat (16) which are connected in sequence; the central fire cover (20) is placed above the central gas supply seat (13); the outer ring fire cover (30) is placed above the outer ring gas supply seat (16); The outer ring air supply seat (16) and the outer ring air mixing chamber (15) are annular chamber structures and are spaced apart from each other; a spiral air supply channel (17) is provided between the outer ring air supply seat (16) and the outer ring air mixing chamber (15); at least two spiral air supply channels (17) are provided, and the flow rotation direction of the gas between the spiral air supply channels (17) is the same.

2. The burner with a multi-channel rotating air supply structure according to claim 1, characterized in that: At least three spiral air supply channels (17) are provided and are evenly arranged along the circumference.

3. The burner with a multi-channel rotating air supply structure according to claim 2, characterized in that: Two adjacent spiral air supply channels (17) are spaced apart to form a secondary air channel (18).

4. The burner with a multi-channel rotating air supply structure according to claim 1, characterized in that: The spiral air supply channel (17) is provided with a blocking convex portion (19).

5. The burner with a multi-channel rotating air supply structure according to claim 1, characterized in that: The central air mixing chamber (12) is located below the outer ring air mixing chamber (15); and below the central air mixing chamber (12) is an arc-shaped central flow guide surface (121).

6. The burner with a multi-channel rotating air supply structure according to claim 5, characterized in that: The output end of the central gas mixing chamber (12) is provided with a U-shaped central gas supply channel (122), which can output gas from both ends toward the central gas supply seat (13).

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