A flow divider for a burner mixing chamber

Abstract

This utility model relates to the field of gas burner technology, specifically to a flow divider plate for the mixing chamber of a burner. It includes an intermediate cylinder with an annular panel at its upper end. A plurality of air holes are evenly distributed along the circumference of the annular panel, extending obliquely from the lower surface to the upper surface of the annular panel. By optimizing the flow divider plate structure, this utility model guides the gas entering the mixing chamber of the burner, ensuring a stable flow and combustion from the lower chamber to the upper chamber. This avoids uneven gas flow or backflow, thus preventing deflagration during ignition and popping noises during ignition shutdown, thereby guaranteeing stable combustion.

Description

Technical Field

[0001] This utility model relates to the field of gas burner technology, specifically to a flow divider for the mixing chamber of a burner. Background Technology

[0002] Gas burners, as key equipment for mixing gas and air and then burning them, are widely used in industrial and civil fields, such as gas stoves, boilers, heating furnaces, and wall-hung boilers. Currently, the structure of gas burners on the market mainly includes the burner body, fuel nozzle, air passage, mixing device, ignition device, and combustion chamber.

[0003] Existing burners exhibit several problems that urgently need to be addressed during operation. These include deflagration and knocking issues, specifically uneven gas mixing and distribution within the mixing chamber at the burner cap. This leads to situations where some areas ignite easily and burn more completely, while others are more difficult to ignite and burn less completely. This can easily affect combustion stability, potentially causing deflagration during ignition and knocking due to gas backflow during flameout. Consequently, it is detrimental to maintaining combustion stability and thermal efficiency.

[0004] It is evident that existing burners still have room for improvement and should be optimized to improve their structure. This optimization would enhance the mixing chamber structure, improving the uniformity of gas-air mixing and ensuring good flow characteristics and concentration uniformity of the mixture upon entering the combustion chamber. This would result in a more stable airflow and more uniform gas-air mixing, thereby guaranteeing the burner's stability and reliability. Therefore, a more reasonable technical solution is needed to address the technical problems existing in the current technology. Utility Model Content

[0005] To overcome at least one of the aforementioned defects, this utility model proposes a flow divider for the mixing chamber of a burner. The flow divider separates the mixing chamber into an upper chamber and a lower chamber, guiding the airflow in the lower chamber. This ensures that the mixed gas flows from the lower chamber to the upper chamber after entering the mixing chamber, preventing the mixed gas from flowing back into the lower chamber. After reaching the combustion plate, the mixed gas can be quickly ignited and form stable combustion, avoiding deflagration and detonation.

[0006] To achieve the above objectives, the diverter plate disclosed in this utility model can adopt the following technical solution:

[0007] A flow divider for a burner mixing chamber includes an intermediate cylinder. An annular panel is provided at the upper end of the intermediate cylinder. A plurality of air holes are evenly distributed along the circumference of the annular panel, and the air holes extend obliquely from the lower surface of the annular panel to the upper surface of the annular panel.

[0008] The aforementioned flow divider separates the combustion chamber of the burner into an upper chamber and a lower chamber. Gas from the lower chamber enters the upper chamber after passing through the flow divider, maintaining gas flow stability during ignition, ensuring a stable and reliable ignition process, and preventing deflagration. It also prevents gas backflow, avoiding popping sounds during flameout. Therefore, the flow divider effectively improves the combustion stability and reliability of the burner.

[0009] Furthermore, the pore structure can be constructed in various forms, and its structure is not limited to a single one. Here, we optimize and propose one feasible option: the pores include elongated holes that are radially distributed along the radius of the concentric circles of the annular panel.

[0010] Furthermore, the specific structure of the vent can be polygonal, curved, or irregular; its structure is not uniquely limited. Here, we propose one feasible option: the vent includes a horizontal upper port on the upper surface of the annular panel, a guide structure extending from the upper port to the lower surface of the annular surface, and a vertical port at the end of the guide structure. When using this scheme, the gas in the lower cavity flows through the guide structure, moving from below the annular panel to above it, forming an inclined airflow that is distributed circumferentially, thus creating a stable vortex above the annular panel.

[0011] Furthermore, the horizontal upper port of the vent can be constructed in various forms, and its structure is not uniquely limited. Here, we optimize and propose one feasible option: the horizontal upper port includes a long side and a short side, with the long side extending to the short side via an arc-shaped edge. When adopting this scheme, the arc-shaped edge restricts the guiding space within the guiding structure. The airflow from the lower cavity to the upper cavity is more likely to maintain its stream shape under the restriction of the arc-shaped edge, avoiding the formation of scattered turbulence.

[0012] Furthermore, the guiding structure can adopt various schemes to form the guiding space, and its structure is not limited to a single one. Here, we optimize and propose one feasible option: the guiding structure includes a guiding ramp, guiding side plates are formed on both sides of the guiding ramp, and a guiding space is formed between the guiding ramp and the guiding side plates. When adopting the above scheme, the guiding ramp and the guiding side plates can be integrally formed.

[0013] Furthermore, to better maintain airflow stability and avoid backflow that could lead to deflagration or loud noise, an optimization is proposed, and one feasible option is suggested: the depth of the guiding space is 0.3 to 1.5 times the width of the horizontal upper port. Using this solution can resolve the issues of high backfire limits in thin-plate burner caps, backfire phenomena that occur upon restarting, and deflagration noise caused by gas backflow when the burner is shut off.

[0014] Furthermore, the structure of the diverter plate can be optimized. Here, one feasible option is proposed: the intermediate cylinder and the annular panel are integrally formed.

[0015] Furthermore, the intermediate cylinder can be fitted with the burner in various ways. Here, we optimize and propose one feasible option: the lower end of the intermediate cylinder forms a bent edge structure. When this solution is adopted, the intermediate cylinder connects and fits with the burner through the bent edge structure, forming a sealed structure to prevent combustion gases inside the burner from leaking to the outside through the gaps in the fit.

[0016] Furthermore, the bent edge structure can be constructed in various forms, and its structure is not limited to a single one. Here, we optimize and propose one feasible option: the bent edge structure includes bending first towards the center of the intermediate cylinder and then bending towards the outside of the intermediate cylinder, with the end of the bent edge structure flush with the outer or inner surface of the intermediate cylinder. When adopting the above scheme, the bent edge structure is directly formed by bending from the lower edge of the intermediate cylinder.

[0017] Furthermore, the layout of the pores is not limited to a single method. Here, we optimize the layout and propose one feasible option: the minimum interval between adjacent pores is less than the width of the pore, and the maximum interval is greater than the width of the pore.

[0018] Compared with the prior art, some of the beneficial effects of the technical solution disclosed in this utility model include:

[0019] This invention optimizes the structure of the flow divider plate to guide the gas entering the mixing chamber of the burner, enabling the gas to stably enter the upper chamber from the lower chamber, achieving stable flow and combustion. At the same time, it avoids uneven gas flow or backflow, thereby preventing deflagration during ignition and popping noises during ignition shutdown, thus ensuring stable combustion. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the manifold.

[0022] Figure 2 This is a schematic diagram of the overall structure of the splitter from another perspective.

[0023] Figure 3This is a top view of the splitter plate.

[0024] Figure 4 This is a side view of the splitter structure.

[0025] Figure 5 This is a cross-sectional view of the manifold.

[0026] In the above attached figures, the meanings of each label are as follows:

[0027] 1. Intermediate cylinder; 101. Bending edge structure; 2. Annular panel; 3. Air vent; 301. Horizontal upper port; 302. Guide structure; 3021. Guide inclined plate; 3022. Guide side plate; 303. Vertical longitudinal port. Detailed Implementation

[0028] The following description, in conjunction with the accompanying drawings and specific embodiments, further illustrates this embodiment.

[0029] In view of the problems of low combustion efficiency, unstable and uneven combustion process, and easy occurrence of deflagration and knocking in the combustion system of the prior art, the following embodiments are optimized and overcome the defects of the prior art.

[0030] Example

[0031] like Figures 1-5 As shown, this embodiment provides a flow divider for a burner mixing chamber, including an intermediate cylinder 1. An annular panel 2 is provided at the upper port of the intermediate cylinder 1. A plurality of air holes 3 are evenly distributed along the circumference on the annular panel 2. The air holes 3 obliquely penetrate from the lower surface of the annular panel 2 to the upper surface of the annular panel 2.

[0032] The flow divider disclosed in this embodiment separates the mixing chamber of the burner into an upper chamber and a lower chamber. Gas from the lower chamber enters the upper chamber after passing through the flow divider, maintaining the stability of gas flow during ignition, ensuring a stable and reliable ignition process and preventing deflagration. It also prevents gas backflow, avoiding popping sounds during flameout. Therefore, the flow divider effectively improves the combustion stability and reliability of the burner.

[0033] The structure of the pores 3 can be constructed in various forms, and its structure is not limited to one. This embodiment optimizes and adopts one of the feasible options: the pores 3 include elongated holes, which are radially distributed along the radius of the concentric circles of the annular panel 2.

[0034] The specific structure of the vent 3 can be polygonal, curved, or irregular; its structure is not uniquely limited. This embodiment optimizes and adopts one feasible option: the vent 3 includes a horizontal upper port 301 disposed on the upper surface of the annular panel 2, a guide structure 302 forming from the upper port to the lower surface of the annular surface, and a vertical port 303 forming at the end of the guide structure 302. When the above scheme is adopted, the gas in the lower cavity flows through the guide structure 302, flowing from below the annular panel 2 to above the annular panel 2, forming an inclined airflow that is distributed along the circumference, thereby forming a stable vortex above the annular panel 2.

[0035] The horizontal upper port 301 of the vent 3 can be constructed in various forms, and its structure is not limited to a single one. This embodiment optimizes and adopts one feasible option: the horizontal upper port 301 includes a long side and a short side, with the long side extending to the short side via an arc-shaped edge. When the above scheme is adopted, the arc-shaped edge restricts the guiding space inside the guiding structure 302. The airflow from the lower cavity to the upper cavity is more likely to maintain its stream shape under the restriction of the arc-shaped edge, avoiding the formation of scattered turbulence.

[0036] The guide structure 302 can be formed into a guide space using various schemes, and its structure is not limited to a single one. This embodiment optimizes and adopts one feasible option: the guide structure 302 includes a guide ramp 3021, guide side plates 3022 are formed on both sides of the guide ramp, and a guide space is formed between the guide ramp 3021 and the guide side plates 3022. When the above scheme is adopted, the guide ramp 3021 and the guide side plates 3022 can be integrally formed.

[0037] To better maintain stable airflow and avoid backflow that could lead to deflagration or loud noise, this embodiment optimizes the process by employing one feasible option: the depth of the guiding space is 0.3 to 1.5 times the width of the horizontal upper port 301. Using this solution resolves the issues of high backfire limits in thin-plate burner caps, backfire occurring upon restarting, and deflagration noise caused by gas backflow during flameout.

[0038] The structure of the diverter plate can be optimized. In this embodiment, an optimization is performed and one feasible option is adopted: the intermediate cylinder 1 and the annular panel 2 are integrally formed.

[0039] The intermediate cylinder 1 can be fitted with the burner in various ways. This embodiment optimizes the fit and adopts one feasible option: the lower end of the intermediate cylinder 1 forms a bent edge structure 101. When the above solution is adopted, the intermediate cylinder 1 is connected and fitted with the burner through the bent edge structure 101 to form a sealed structure, preventing the combustion gas inside the burner from leaking to the outside through the gap in the fit.

[0040] The bent edge structure 101 can be constructed in various forms, and its structure is not limited to a single one. This embodiment optimizes and adopts one feasible option: the bent edge structure 101 includes bending towards the center of the intermediate cylinder 1 and then bending towards the outside of the intermediate cylinder, with the end of the bent edge structure 101 flush with the outer or inner surface of the intermediate cylinder. When the above scheme is adopted, the bent edge structure 101 is directly bent from the lower edge of the intermediate cylinder 1.

[0041] The layout of the pores 3 is not limited to a single method. This embodiment optimizes the layout and adopts one feasible option: the minimum interval between adjacent pores 3 is less than the width of the pores 3, and the maximum interval is greater than the width of the pores 3.

[0042] The above are the embodiments listed in this example. However, this example is not limited to the optional embodiments described above. Those skilled in the art can arbitrarily combine the above methods to obtain other various embodiments. Anyone can derive other various forms of embodiments under the guidance of this example. The above specific embodiments should not be construed as limiting the scope of protection of this example. The scope of protection of this example should be defined in the claims.

Claims

1. A flow divider for a burner mixing chamber, characterized in that: It includes an intermediate cylinder (1), and an annular panel (2) is provided at the upper end of the intermediate cylinder (1). A number of air holes (3) are evenly distributed along the circumference on the annular panel (2). The air holes (3) extend obliquely from the lower surface of the annular panel (2) to the upper surface of the annular panel (2).

2. The flow divider plate of the burner mixing chamber according to claim 1, characterized in that: The pores (3) include elongated pores that are radially distributed along the radius of the concentric circles of the annular panel (2).

3. The flow divider of the burner mixing chamber according to claim 1 or 2, characterized in that: The vent (3) includes a horizontal upper port (301) disposed on the upper surface of the annular panel (2), a guide structure (302) forming from the upper port to the lower surface of the annular surface, and a vertical port (303) forming at the end of the guide structure (302).

4. The flow divider plate of the burner mixing chamber according to claim 3, characterized in that: The horizontal upper port (301) includes a long side and a short side, with the long side extending to the short side via an arc-shaped edge.

5. The flow divider of the burner mixing chamber according to claim 3, characterized in that: The guide structure (302) includes a guide ramp (3021), guide side plates (3022) are formed on both sides of the guide ramp, and a guide space is formed between the guide ramp (3021) and the guide side plates (3022).

6. The flow divider plate of the burner mixing chamber according to claim 5, characterized in that: The depth of the guide space is 0.3 to 1.5 times the width of the horizontal upper port (301).

7. The flow divider plate of the burner mixing chamber according to claim 1, characterized in that: The intermediate cylinder (1) and the annular panel (2) are integrally formed.

8. The flow divider of the burner mixing chamber according to claim 1 or 7, characterized in that: The lower end of the intermediate cylinder (1) forms a bent edge structure (101).

9. The flow divider of the burner mixing chamber according to claim 8, characterized in that: The bent edge structure (101) includes bending towards the center of the intermediate cylinder (1) and then bending towards the outside of the intermediate cylinder. The end of the bent edge structure (101) is flush with the outer or inner surface of the intermediate cylinder.

10. The flow divider of the burner mixing chamber according to claim 9, characterized in that: The minimum interval between adjacent pores (3) is less than the width of the pore (3), and the maximum interval is greater than the width of the pore (3).

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