High-energy-efficiency combustor

Abstract

The utility model discloses a high-energy-efficiency combustor which comprises a gas distribution disc, an inner ring fire cover and an outer ring fire cover. An annular spacing groove is formed between the central gas supply seat and the outer ring gas supply seat; the gas distribution disc is provided with a gas baffle, and the gas baffle is transversely arranged between the center gas supply base and the outer ring gas supply base and located above the annular interval groove. And the air baffle plate is used for preventing secondary air in the annular spacing groove from directly rising. According to the utility model, the gas baffle plate forces the original vertically rising secondary air flow to diffuse along the horizontal direction after being blocked, so that a centripetal or centrifugal transverse air flow layer is formed, and fire hole areas of the inner ring fire cover and the outer ring fire cover are accurately covered. Due to the flow guide effect, the contact area of secondary air and fuel gas jet flow is increased, the turbulence mixing effect is enhanced by prolonging the mixing path, the air supplementing effect of fuel gas at the fire holes is effectively improved, secondary air supplementing is more sufficient, the combustion efficiency is higher, and smoke is lower.

Description

Technical Field

[0001] This utility model relates to the field of burner technology, and in particular to a high-efficiency burner. Background Technology

[0002] As the core functional component of gas stoves, the gas burner's structural design directly affects the mixing efficiency of gas and air and combustion performance. Currently, mainstream two-ring burners employ a coaxially arranged central and outer ring burner structure, creating a secondary air supply channel through an annular spacer groove at the gas distribution plate. For example, the burner disclosed in patent number CN204629487U utilizes a combination of external direct fire and internal swirling fire combustion technology. Although the spacer groove achieves bottom-up secondary air supply, under actual operating conditions, due to the significant interference of the rising hot airflow generated by combustion on the airflow field, most of the secondary air rises vertically with the mainstream flue gas, failing to be effectively guided to the inner and outer ring burner areas. This aerodynamic characteristic results in insufficient contact area between the secondary air and the gas jet at the burner outlet, leading to poor mixing uniformity. This not only reduces combustion thermal efficiency but also easily produces incomplete combustion products such as CO. Therefore, further improvements are needed. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a high-efficiency burner.

[0004] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: a high-efficiency burner, including: a gas distribution plate, an inner ring burner cover and an outer ring burner cover; the gas distribution plate is coaxially provided with a central gas supply seat and an outer ring gas supply seat, and the inner ring burner cover and the outer ring burner cover are respectively covered on the central gas supply seat and the outer ring gas supply seat; an annular spacer groove is provided between the central gas supply seat and the outer ring gas supply seat;

[0005] The air distribution plate is equipped with an air baffle plate, which is horizontally positioned between the central air supply seat and the outer ring air supply seat, above the annular spacer groove; the air baffle plate is used to block the direct rise of secondary air from the annular spacer groove.

[0006] Optionally, the air distribution plate is provided with a connecting beam for integrally connecting the central air supply seat and the outer ring air supply seat; the baffle plate is mounted above the connecting beam.

[0007] Optionally, several connecting beams are evenly arranged along the circumference of the central air supply seat; the several connecting beams divide the annular spacer groove to form several secondary air supply holes; the baffle plate is mounted above the secondary air supply holes.

[0008] Optionally, the connecting beam is provided with reinforcing ribs.

[0009] Optionally, the air baffle is provided in the form of an annular plate structure.

[0010] Optionally, the inner side of the outer ring fire cap is provided with an inverted conical inclined inner wall.

[0011] The beneficial effects of this invention are as follows: This invention uses a horizontally arranged baffle to physically block and reconstruct the secondary airflow in the annular spacer groove, significantly optimizing the direction of aerodynamic disturbance. The baffle forces the originally vertically rising secondary airflow to diffuse horizontally after being obstructed, forming a centripetal or centrifugal lateral airflow layer that precisely covers the burner hole areas of the inner and outer ring burner caps. This guiding effect not only increases the contact area between the secondary air and the combustion jet but also enhances the turbulent mixing effect by extending the mixing path, effectively improving the air replenishment effect of the combustion gas at the burner holes. This results in more sufficient secondary air replenishment, higher combustion efficiency, and lower flue gas emissions.

[0012] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0013] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0014] Figure 1 This is a schematic diagram of the structure of the high-efficiency burner of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the gas distribution plate of this utility model;

[0016] Figure 3 This is another structural schematic diagram of the gas distribution plate of this utility model.

[0017] Explanation of key component symbols:

[0018] 10. Gas distribution plate; 11. Central gas supply seat; 12. Outer ring gas supply seat; 13. Annular interval groove; 131. Secondary gas supply hole; 14. Baffle plate; 15. Connecting beam; 16. Reinforcing rib; 20. Inner ring burner cap; 30. Outer ring burner cap; 31. Inclined inner wall; 40. Burner hole. Detailed Implementation

[0019] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the description of the textual part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0020] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0023] Example

[0024] Reference Figure 1 and Figure 3 The present invention proposes a high-efficiency burner, comprising: a gas distribution plate 10, an inner ring burner cap 20, and an outer ring burner cap 30; the gas distribution plate 10 is coaxially provided with a central gas supply seat 11 and an outer ring gas supply seat 12, the inner ring burner cap 20 and the outer ring burner cap 30 respectively covering the central gas supply seat 11 and the outer ring gas supply seat 12; an annular spacer groove 13 is provided between the central gas supply seat 11 and the outer ring gas supply seat 12;

[0025] The air distribution plate 10 is provided with an air baffle 14, which is horizontally arranged between the central air supply seat 11 and the outer ring air supply seat 12, and located above the annular spacer groove 13; the air baffle 14 is used to block the direct rise of secondary air in the annular spacer groove 13.

[0026] In this invention, a horizontally arranged baffle plate 14 physically blocks and reconstructs the flow path of the secondary airflow in the annular spacer groove 13, significantly optimizing the direction of aerodynamic disturbance. The baffle plate 14 forces the originally vertically rising secondary airflow to diffuse horizontally after being obstructed, forming a centripetal or centrifugal lateral airflow layer that precisely covers the flame hole 40 area of ​​the inner ring burner cap 20 and the outer ring burner cap 30. This guiding effect not only increases the contact area between the secondary air and the combustion jet, but also enhances the turbulent mixing effect by extending the mixing path, effectively improving the air replenishment effect of the combustion gas at the flame hole 40, resulting in more sufficient secondary air replenishment, higher combustion efficiency, and lower flue gas emissions.

[0027] In this invention, the air baffle 14 and the air distribution plate 10 are integrally molded, requiring no additional assembly process, compatible with existing production processes, and have low production costs and high reliability.

[0028] In this embodiment, the air distribution plate 10 is provided with a connecting beam 15 for integrally connecting the central air supply seat 11 and the outer ring air supply seat 12; the baffle plate 14 is mounted above the connecting beam 15. The connecting beam 15, as the connecting part of the support frame, enhances the overall mechanical strength of the air distribution plate 10 and ensures the overall mechanical strength of the central air supply seat 11 and the outer ring air supply seat 12 with the air distribution plate 10.

[0029] Specifically, several connecting beams 15 are evenly arranged around the central air supply seat 11; these connecting beams 15 divide the annular spacer groove 13 to form several secondary air supply holes 131; and a baffle plate 14 is mounted above the secondary air supply holes 131. The evenly distributed connecting beams 15 disperse the heat load of the air distribution plate 10, reduce material fatigue caused by local high temperatures, and extend the burner's service life; the design of multiple secondary air supply holes 131 achieves dispersed supply of secondary air, avoiding the problem of concentrated airflow caused by a single channel. Combined with the guiding effect of the baffle plate 14, the airflow output from each air supply hole can accurately cover the corresponding flame hole 40 area, reducing mixing dead zones.

[0030] In this embodiment, the connecting beam 15 is provided with reinforcing ribs 16. By optimizing the layout of the reinforcing ribs 16, the amount of material used can be reduced while ensuring strength, thereby lowering manufacturing costs and meeting the lightweight requirements of industrial design.

[0031] Preferably, the baffle plate 14 is arranged in an annular plate structure. The annular plate structure matches the coaxial design of the air distribution plate 10, forming a 360° uniform blocking effect, avoiding the problem of uneven mixing caused by airflow deviating to one side, which is especially suitable for two-ring burner structures with multiple burner holes 40.

[0032] In other embodiments, the air baffle 14 may also be arranged in the form of several separate plate-like structures.

[0033] In this embodiment, an inverted conical inclined inner wall 31 is provided on the inner side of the outer ring burner cap 30. The inverted conical inner wall guides the combustion gas flow to be injected in an inclined direction, forming an angle with the horizontal secondary air guided by the baffle plate 14, so that the secondary air centrifugally directed outward by the baffle plate 14 can be guided along the inclined inner wall 31 to the outer burner hole 40 area of ​​the outer ring burner cap 30, thus better covering the burner hole 40 on the outer side of the outer ring burner cap 30.

[0034] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A high-efficiency burner, comprising: The gas distribution disc (10), the inner ring fire cover (20) and the outer ring fire cover (30); the gas distribution disc (10) is coaxially provided with a center gas supply seat (11) and an outer ring gas supply seat (12), the inner ring fire cover (20) and the outer ring fire cover (30) are respectively covered on the center gas supply seat (11) and the outer ring gas supply seat (12); the center gas supply seat (11) and the outer ring gas supply seat (12) are provided with an annular spacing groove (13) therebetween; It is characterized in that: the gas distribution disc (10) is provided with a baffle plate (14), the baffle plate (14) is transversely arranged between the center gas supply seat (11) and the outer ring gas supply seat (12), and located above the annular spacing groove (13); the baffle plate (14) is used for blocking the direct upward of the secondary air of the annular spacing groove (13).

2. The high-efficiency burner of claim 1, wherein: The gas distribution disc (10) is provided with a connecting beam (15) for integrally connecting the center gas supply seat (11) and the outer ring gas supply seat (12); the baffle plate (14) is arranged above the connecting beam (15).

3. The high-efficiency burner of claim 2, wherein: The connecting beam (15) is uniformly provided with a plurality of connecting beams (15) along the circumference of the center gas supply seat (11); a plurality of connecting beams (15) divide the annular spacing groove (13) to form a plurality of secondary air supplement holes (131); the baffle plate (14) is arranged above the secondary air supplement hole (131).

4. The high-efficiency burner of claim 2, wherein: The connecting beam (15) is provided with a reinforcing rib (16).

5. The high-efficiency burner of claim 1, wherein: The baffle plate (14) is arranged in a ring-shaped plate structure.

6. The high-efficiency burner of claim 1, wherein: The inner side of the outer ring fire cover (30) is provided with an inclined inner wall (31) in the form of an inverted cone.

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