Internal and external air partition type combustor

Abstract

The utility model discloses an internal and external air partition type burner which comprises a gas distribution disc, an inner ring fire cover and an outer ring fire cover. The inner ring gas supply seat and the outer ring gas supply seat are spaced to form a secondary gas supply gap; the gas distribution disc is provided with a gas distribution ring and a connecting rib; the air distribution ring is located in the middle of the secondary air supply gap and divides the secondary air supply gap into an inner ring air supply area and an outer ring air supply area; the connecting ribs are arranged on the two sides of the inner ring of the gas distribution ring, and the gas distribution ring is connected to the inner ring gas supply base and the outer ring gas supply base. The connecting ribs divide the inner ring air supply area into a plurality of inner ring air supply grooves, and divide the outer ring air supply area into a plurality of outer ring air supply grooves. According to the utility model, through the collaborative design of the air distribution ring and the connecting rib, the independent inner ring air supply area and outer ring air supply area are formed between the inner ring air supply seat and the outer ring air supply seat, so that layered directional flow guide of secondary air is realized.

Description

Technical Field

[0001] This utility model relates to the field of burner technology, and in particular to an internal and external air partition burner. Background Technology

[0002] As the core component of gas stoves, the burner's structural design directly affects combustion efficiency and pollutant emission levels. Traditional burners typically employ a separate structure of inner and outer ring burners, such as the gas stove burner disclosed in patent CN201448848U, where the outer ring burner surrounds the inner ring burner, forming an annular gap to supply primary air. However, in practical applications, while this gap can supply gas to the burner holes, the open space between the inner and outer ring burners, lacking airflow guidance, causes the high-temperature flue gas to expand upwards during combustion, resulting in a negative pressure effect in the gap area. This makes it difficult for external cold air to effectively penetrate to the root of the inner ring burner holes. Especially under continuous high heat load conditions, the inner ring flame is prone to incomplete combustion due to insufficient secondary air supply, manifesting as reduced flame temperature, increased CO emissions, and decreased thermal efficiency. Therefore, further improvements are needed. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an internal and external air partitioned burner.

[0004] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: an internal and external air partition burner, including: a gas distribution plate, an inner ring burner and an outer ring burner;

[0005] The air distribution plate is provided with an inner ring air supply seat and an outer ring air supply seat; the outer ring air supply seat is provided with an outer ring air inlet; the inner ring air supply seat has a cylindrical structure that runs vertically through the top and bottom; the outer ring burner cap and the inner ring burner cap are respectively installed on the inner ring air supply seat and the outer ring air supply seat.

[0006] The inner and outer ring air supply seats form a secondary air supply gap; the air distribution plate is provided with an air distribution ring and connecting ribs; the air distribution ring is located in the middle of the secondary air supply gap, and divides the secondary air supply gap into an inner ring air supply area and an outer ring air supply area; the connecting ribs are provided on both sides of the inner ring of the air distribution ring, connecting the air distribution ring to the inner ring air supply seat and the outer ring air supply seat; the connecting ribs divide the inner ring air supply area into several inner ring air supply grooves, and the outer ring air supply area into several outer ring air supply grooves.

[0007] Optionally, the inner ring air supply groove and the outer ring air supply groove have an arc-shaped groove structure.

[0008] Optionally, the number of outer ring air supply grooves is twice the number of inner ring air supply grooves.

[0009] Optionally, the outer ring air supply groove is provided with 3 grooves, and the inner ring air supply groove is provided with 6 grooves.

[0010] Optionally, the inner ring gas supply seat is provided with a central connecting part, and the outer periphery of the central connecting part is connected to the inner ring gas supply seat by a plurality of central connecting beams; the inner ring burner cap is fixed to the central connecting part by a locking member.

[0011] Optionally, the central connecting portion divides the air outlet end of the inner ring air supply seat into several inner ring air supply slots; the inner ring air supply slots have a fan-shaped structure and are arranged corresponding to the inner ring air replenishment slots.

[0012] Optionally, the outer ring gas supply seat is provided with a plurality of outer ring connecting posts for locking the outer ring flame cap.

[0013] The beneficial effects of this invention are as follows: Through the coordinated design of the gas distribution ring and the connecting rib, independent inner and outer ring air supply zones are formed between the inner and outer ring air supply seats, achieving stratified and directional flow of secondary air. The longitudinal segmentation of the air supply gap by the gas distribution ring can suppress the backflow of high-temperature flue gas and reduce the obstruction of cold air intake by the negative pressure effect; the connecting rib refines the air supply zone into multiple air supply grooves, enhancing the stability of airflow through structured flow guidance, avoiding turbulence interference, and ensuring that the inner ring burner root receives sufficient secondary air supply, significantly improving combustion uniformity.

[0014] 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

[0015] 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:

[0016] Figure 1 This is a schematic diagram of the burner of this utility model.

[0017] Explanation of key component symbols:

[0018] 10. Air distribution plate; 11. Inner ring air supply seat; 12. Outer ring air supply seat; 13. Outer ring air inlet; 14. Air distribution ring; 15. Connecting rib; 16. Middle connecting part; 17. Middle connecting beam; 18. Outer ring connecting column; 20. Inner ring burner cap; 30. Outer ring burner cap; 40. Inner ring air supply groove; 50. Outer ring air supply groove; 60. Inner ring air supply groove. 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 textual description 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 The present invention proposes an internal and external air partitioned burner, comprising: an air distribution plate 10, an inner ring burner cap 20 and an outer ring burner cap 30;

[0025] The air distribution plate 10 is provided with an inner ring air supply seat 11 and an outer ring air supply seat 12; the outer ring air supply seat 12 is provided with an outer ring air inlet 13; the inner ring air supply seat 11 has a cylindrical structure that runs vertically through; the outer ring burner cap 30 and the inner ring burner cap 20 are respectively installed on the inner ring air supply seat 11 and the outer ring air supply seat 12.

[0026] The inner ring air supply seat 11 and the outer ring air supply seat 12 form a secondary air supply gap; the air distribution plate 10 is provided with an air distribution ring 14 and a connecting rib 15; the air distribution ring 14 is located in the middle of the secondary air supply gap and divides the secondary air supply gap into an inner ring air supply area and an outer ring air supply area; the connecting rib 15 is provided on both sides of the inner ring of the air distribution ring 14, connecting the air distribution ring 14 to the inner ring air supply seat 11 and the outer ring air supply seat 12; the connecting rib 15 divides the inner ring air supply area into several inner ring air supply grooves 40 and divides the outer ring air supply area into several outer ring air supply grooves 50.

[0027] In this invention, through the coordinated design of the gas distribution ring 14 and the connecting rib 15, independent inner and outer ring air supply zones are formed between the inner and outer ring air supply seats 12, achieving stratified and directional flow of secondary air. The longitudinal division of the air supply gap by the gas distribution ring 14 can suppress the backflow of high-temperature flue gas and reduce the obstruction of cold air intake by the negative pressure effect; the connecting rib 15 refines the air supply zone into multiple air supply grooves, enhancing the stability of airflow through structured flow guidance, avoiding turbulence interference, and ensuring that the inner ring burner root receives sufficient secondary air supply, significantly improving combustion uniformity.

[0028] In this embodiment, the inner ring air supply groove 40 and the outer ring air supply groove 50 are arc-shaped grooves. The arc-shaped groove design conforms to the hydrodynamic characteristics of airflow, reducing resistance loss during air passage and improving air supply efficiency. The arc shape also guides air to distribute evenly along the circumference of the burner cap, avoiding airflow collisions or eddies that may occur in straight grooves, further optimizing the uniformity of air-fuel mixing in the inner and outer ring burner hole areas.

[0029] Preferably, the number of outer ring air supply channels 50 is twice the number of inner ring air supply channels 40. Setting the number of outer ring air supply channels 50 to twice that of the inner ring allows for operation with a larger coverage area of ​​the outer ring burner cap 30 and higher firepower requirements. By increasing the density of the outer ring air supply channels, it ensures that the outer ring flame receives sufficient secondary air even under high load, preventing flameout or unstable combustion due to insufficient air, while maintaining a dynamic balance between the inner and outer ring air supply amounts.

[0030] In this embodiment, there are 3 outer ring air supply grooves 50 and 6 inner ring air supply grooves 40.

[0031] In this embodiment, the inner ring gas supply seat 11 is provided with a central connecting portion 16. The outer periphery of the central connecting portion 16 is connected to the inner ring gas supply seat 11 by a plurality of central connecting beams 17. The inner ring burner cap 20 is fixed to the central connecting portion 16 by locking members. The central connecting portion 16 and the connecting beams form a stable support structure for the inner ring gas supply seat 11, preventing the inner ring burner cap 20 from shifting due to high-temperature deformation. The spaced distribution of the connecting beams rigidly connects the inner ring gas supply seat 11 to the main body of the gas distribution plate 10, enhancing the structural strength, and at the same time forming multiple inner ring gas supply slots 60, realizing the zonal and uniform distribution of gas, and avoiding the problem of uneven flame caused by concentrated gas injection.

[0032] Specifically, the central connecting part 16 divides the outlet end of the inner ring air supply seat 11 into several inner ring air supply slots 60; the inner ring air supply slots 60 have a fan-shaped structure and are set corresponding to the inner ring air replenishment slots 40. The fan-shaped inner ring air supply slots 60 and the inner ring air replenishment slots 40 are set to form staggered mixing of the gas flow and the secondary air flow at the burner outlet, thereby improving the premixing effect. The fan-shaped gradually expanding channel design can reduce the gas flow rate, prolong the mixing time, and promote the full mixing of gas and air, thereby reducing the local fuel richness phenomenon during the combustion process and further reducing CO and nitrogen oxide emissions.

[0033] In this embodiment, the outer ring gas supply base 12 is provided with a plurality of outer ring connecting posts 18 for locking the outer ring burner cap 30. The outer ring connecting posts 18 secure the outer ring burner cap 30 by locking it at multiple points, ensuring the sealing between the outer ring burner cap 30 and the gas supply base and preventing gas leakage.

[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. An internal and external air partitioned burner, characterized in that, include: Distributor plate (10), inner ring burner cap (20) and outer ring burner cap (30); The air distribution plate (10) is provided with an inner ring air supply seat (11) and an outer ring air supply seat (12); the outer ring air supply seat (12) is provided with an outer ring air inlet (13); the inner ring air supply seat (11) has a cylindrical structure that runs vertically through the top and bottom; the outer ring flame cap (30) and the inner ring flame cap (20) are respectively installed on the inner ring air supply seat (11) and the outer ring air supply seat (12); The inner ring air supply seat (11) and the outer ring air supply seat (12) are spaced apart to form a secondary air supply gap; the air distribution plate (10) is provided with an air distribution ring (14) and a connecting rib (15); the air distribution ring (14) is located in the middle of the secondary air supply gap and divides the secondary air supply gap into an inner ring air supply area and an outer ring air supply area; the connecting rib (15) is provided on both sides of the inner ring of the air distribution ring (14) and connects the air distribution ring (14) to the inner ring air supply seat (11) and the outer ring air supply seat (12); the connecting rib (15) divides the inner ring air supply area into several inner ring air supply grooves (40) and divides the outer ring air supply area into several outer ring air supply grooves (50).

2. The internal and external air partitioned burner according to claim 1, characterized in that: The inner ring air supply groove (40) and the outer ring air supply groove (50) have an arc-shaped groove structure.

3. The internal and external air partitioned burner according to claim 2, characterized in that: The number of outer ring air supply grooves (50) is twice the number of inner ring air supply grooves (40).

4. The internal and external air partitioned burner according to claim 2, characterized in that: The outer ring air supply groove (50) is provided with 3 grooves, and the inner ring air supply groove (40) is provided with 6 grooves.

5. The internal and external air partitioned burner according to claim 2, characterized in that: The inner ring gas supply seat (11) is provided with a central connecting part (16), and the outer periphery of the central connecting part (16) is connected to the inner ring gas supply seat (11) by a plurality of central connecting beams (17); the inner ring flame cap (20) is fixed to the central connecting part (16) by a locking member.

6. The internal and external air partitioned burner according to claim 5, characterized in that: The middle connecting part (16) divides the air outlet of the inner ring air supply seat (11) into several inner ring air supply grooves (60); the inner ring air supply grooves (60) have a fan-shaped structure and are set corresponding to the inner ring air replenishment grooves (40).

7. The internal and external air partitioned burner according to claim 1, characterized in that: The outer ring gas supply seat (12) is provided with a number of outer ring connecting posts (18) for locking the outer ring fire cap (30).

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