Burner with simple air door structure

Abstract

The utility model discloses a burner with a simple air door structure. The burner comprises a burner main body and an injection pipe, the injection pipe is of an integrally-formed structure through casting. The injection air inlet end of the injection pipe is cylindrical, and the two opposite ends of the injection air inlet end are sunken towards the axis of the injection pipe to form two sunken parts. Abutting outer walls are arranged on the outer sides, facing the injection air inlet end, of the two concave parts; the two concave parts divide the two opposite sides of the injection air inlet end into two fan-shaped air inlet channels. A fuel gas inlet channel is formed between the two concave parts; and the concave part is in continuous transition with the inner wall of the injection air inlet end. The air door installation structure is simple, an additional air door installation frame structure is not needed, and a connecting plate structure does not need to be arranged at the injection air inlet end. An area where the section of an air flow channel is suddenly enlarged does not exist, inlet air flow is smooth, gas and air are mixed stably, the stability of the air flow of the combustor is effectively improved, and the combustion efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of burners, and particularly relates to a burner with a simple damper structure. Background Art

[0002] The burner sprays gas into the ejector tube through a gas nozzle, so that the gas is fully mixed with the primary air. Then, the mixed gas is supplied to the burner cap and mixed with the secondary air to generate a flame.

[0003] One end of the gas nozzle is usually arranged in a cock valve, and the other end is inserted into the ejector intake end of the burner ejector tube; a damper plate is arranged at the air outlet of the gas nozzle, and the damper plate is aligned and installed at the ejector intake end of the ejector tube; the ejector intake end of the ejector tube is provided with arc-symmetrically arranged ejector intake holes, and the damper plate is provided with arc-symmetrically arranged damper intake holes; by rotating the damper plate, the overlapping range of the damper intake holes and the ejector intake holes is changed, and thus the air intake can be adjusted. For example, the burner and the gas stove including the same disclosed in Patent No. CN202321136316.4. However, this structure has the following defects:

[0004] 1. A connecting plate structure is arranged between the two ejector intake holes at the ejector intake end of the ejector tube. After the air flow passes through the connecting plate and enters the trumpet-shaped ejector intake end, the cross-section of the air flow path suddenly expands, the air intake air flow is not smooth, which affects the stability of the ejector air flow and the mixing stability of the gas and air;

[0005] 2. The damper plate is usually installed at the ejector intake end of the ejector tube through a damper mounting frame or directly through bolts; bolt holes need to be arranged in the intake pipe, which requires additional assembly parts and machining space for the bolt holes of the ejector tube, is not conducive to cost reduction, and is also not conducive to the stability of the air flow at the ejector intake end of the ejector tube.

[0006] Therefore, further improvement is needed. Content of the Utility Model

[0007] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a burner with a simple damper structure.

[0008] An embodiment of the utility model adopts the following technical solution to solve its technical problems: A burner with a simple damper structure, comprising a furnace head main body and an ejector tube;

[0009] The ejector tube is a casting integrally formed structure; the ejector air inlet end of the ejector tube is cylindrical, and the opposite ends of the ejector air inlet end are recessed inward toward the axis of the ejector tube to form two recessed parts; two abutting outer walls are arranged on the outside of the two recessed parts toward the ejector air inlet end; the two recessed parts divide the opposite sides of the ejector air inlet end into two fan-shaped air inlet channels; a gas inlet channel is formed between the two recessed parts; the recessed part is continuously and smoothly transitioned with the inner wall of the ejector air inlet end.

[0010] Optionally, a connecting thread is arranged at one end of the gas inlet channel toward the outside of the ejector air inlet end.

[0011] Optionally, one end of the ejector air inlet end toward the burner main body is in a trumpet-shaped structure with a gradually narrowing cross-section and is connected to the middle of the ejector tube; the recessed part extends across the trumpet-shaped structure and extends to the middle of the ejector tube.

[0012] Optionally, the ejector tube is separately arranged from the burner main body, and the ejector tube and the burner main body are provided with matching connection holes.

[0013] Optionally, the ejector tube is provided with two ejector channels.

[0014] The beneficial effects of the present utility model: When the ejector tube is integrally cast, the recessed parts are directly injection-molded on the opposite sides of the ejector air inlet end, and the recessed parts are recessed inward toward the axis of the ejector tube. The abutting outer walls of the recessed parts provide the fitting abutting wall surfaces for the damper plates. The two recessed parts divide the opposite sides of the ejector air inlet end into two fan-shaped air inlet channels, and the gas inlet channel formed between the two recessed parts is aligned with the gas nozzle. In the present utility model, the damper installation structure is simple, without an additional damper installation frame structure, nor a connecting plate structure arranged at the ejector air inlet end. The air inlet channel extends from the air inlet side to the middle of the ejector tube, and there is no area where the cross-section of the air flow channel suddenly expands. The air inlet air flow is smooth, the mixing of gas and air is stable, effectively providing the stability of the burner air flow and improving the combustion efficiency.

[0015] In order to make the above objects, features, and advantages of the present utility model more obvious and understandable, the following specifically enumerates preferred embodiments and, in conjunction with the accompanying drawings, makes the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the following description of the embodiments in conjunction with the accompanying drawings, where:

[0017] Figure 1 is a schematic structural diagram of the burner of the present utility model;

[0018] Figure 2 is a partial cross-sectional view of the burner of the present utility model.

[0019] Description of main component symbols:

[0020] 10. Burner head main body; 20. Ejector tube; 21. Connection hole; 30. Ejector intake end; 31. Air intake channel; 32. Gas intake channel; 40. Concave part; 41. Abutting outer wall; 42. Connection thread. Detailed implementation manners

[0021] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The function of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention. However, it should not be construed as a limitation on the protection scope of the present invention.

[0022] In the description of the present invention, "a plurality of" means two or more. Understandings such as "greater than", "less than", and "exceeding" do not include the present number, and understandings such as "above", "below", and "within" include the present number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0023] In the description of the present invention, it should be understood that for the orientation description, such as the orientation or position relationship indicated by "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present invention.

[0024] In the present invention, unless otherwise clearly defined, words such as "set", "install", and "connect" should be understood in a broad sense. For example, they can be directly connected, or indirectly connected through an intermediate medium; they can be fixedly connected, or detachably connected, or integrally formed; they can be mechanically connected; they can be the communication inside two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0025] Embodiment

[0026] Refer to Figure 1 and Figure 2 A burner with a simple damper structure proposed by the present invention includes a burner head main body and an ejector tube;

[0027] The ejector tube is a casting integrally formed structure; the ejecting air inlet end of the ejector tube is cylindrical, and the opposite ends of the ejecting air inlet end are recessed inward toward the axis of the ejector tube to form two recessed portions; there are abutting outer walls provided on the outside of the two recessed portions toward the ejecting air inlet end; the two recessed portions divide the opposite sides of the ejecting air inlet end into two fan-shaped air inlet channels; a gas inlet channel is formed between the two recessed portions; the recessed portions are in smooth transition with the inner wall of the ejecting air inlet end.

[0028] In the present utility model, when the ejector tube is integrally cast, the recessed portions are directly injection-molded on the opposite sides of the ejecting air inlet end, and the recessed portions are recessed inward toward the axis of the ejector tube. The abutting outer walls of the recessed portions provide the fitting abutting wall surfaces for the damper plates. The two recessed portions divide the opposite sides of the ejecting air inlet end into two fan-shaped air inlet channels, and the gas inlet channel formed between the two recessed portions is aligned with the gas nozzle. In the present utility model, the damper installation structure is simple, without an additional damper installation frame structure, nor a connecting plate structure provided at the ejecting air inlet end. The air inlet channels extend from the air inlet side to the middle of the ejector tube, and there is no area where the cross-section of the air flow channel suddenly expands. The air inlet air flow is smooth, the mixing of gas and air is stable, effectively providing the stability of the burner air flow and improving the combustion efficiency.

[0029] In this embodiment, a connecting thread is provided at one end of the gas inlet channel toward the outside of the ejecting air inlet end. By using the connecting thread, it can be threadedly connected and fixed with the air outlet end of the gas nozzle; the gas nozzle is aligned with the gas inlet channel, and at the same time, the damper plate can be pressed tightly against the abutting wall surface through the nozzle spring to complete the installation of the damper plate.

[0030] In this embodiment, the end of the ejecting air inlet end toward the burner head body has a trumpet-shaped structure with a gradually narrowing cross-section and is connected to the middle of the ejector tube; the recessed portions extend across the trumpet-shaped structure and extend to the middle of the ejector tube. The air inlet channels are in smooth transition with the trumpet-shaped structure of the ejecting air inlet end, making the flow of the air flow smoother and more stable.

[0031] In this embodiment, the ejector tube and the burner head body are separately provided, and the ejector tube and the burner head body are provided with matching connection holes. The separately provided burner head body and ejector tube structure facilitate the separate independent processing of the two components, and also facilitate the precise integral casting of the ejector tube and the processing of the inner wall of the ejector tube.

[0032] In this embodiment, in order to match the gas supply requirements of a household two-ring burner, the ejector tube is provided with two ejecting channels.

[0033] 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 burner with a simple air door structure, comprising a burner body (10) and an ejector tube (20); characterized in that: The ejector tube (20) is a cast integrally formed structure; the ejector air inlet end (30) of the ejector tube (20) is cylindrical, and the opposite ends of the ejector air inlet end (30) are recessed toward the axis of the ejector tube (20) to form two recessed portions (40); the two recessed portions (40) are provided with abutting outer walls (41) toward the outside of the ejector air inlet end (30); the two recessed portions (40) divide the opposite sides of the ejector air inlet end (30) into two fan-shaped air inlet passages (31); a gas inlet passage (32) is formed between the two recessed portions (40); and the recessed portion (40) is in continuous transition with the inner wall of the ejector air inlet end (30).

2. The burner with a simple air door structure according to claim 1, characterized in that: A connecting thread (42) is provided at one end of the fuel gas intake passage (32) facing the outer side of the injection intake end (30).

3. The burner with a simple air door structure according to claim 1, characterized in that: The ejector air inlet end (30) is in the form of a trumpet-shaped structure with a gradually narrowing cross-section toward one end of the furnace head body (10), and is connected to the middle of the ejector tube (20); the recessed portion (40) extends across the trumpet-shaped structure and extends to the middle of the ejector tube (20).

4. The burner with a simple air door structure according to claim 1, characterized in that: The ejector tube (20) is arranged separately from the furnace head main body (10), and the ejector tube (20) and the furnace head main body (10) are provided with matching connection holes (21).

5. The burner with a simple air door structure according to claim 1, characterized in that: The ejection pipe (20) is provided with two ejection channels.

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