Novel combustor structure of fuel oil wall-hanging stove

Abstract

The utility model belongs to the technical field of wall-hanging stoves, and particularly relates to a novel combustor structure of a fuel oil wall-hanging stove, which comprises a combustor body and a combustion chamber connected with the combustor body, a coil pipe and a heating disc are arranged in the combustion chamber, the coil pipe is distributed on the inner wall of the combustion chamber, and the heating disc is positioned in the central area of the combustion chamber and is opposite to the combustor body. By optimizing the structure of the combustor, introducing the coil pipe and the heating disc and a heat exchange mechanism between the coil pipe and the heating disc and the interior of the combustion chamber, heat energy of the whole combustion chamber can be absorbed and utilized more effectively. The combustion efficiency of fuel oil is improved, maximum utilization of heat energy is ensured, and energy waste is reduced.

Description

Technical Field

[0001] The utility model relates to a novel burner structure of a fuel-fired wall-mounted boiler, belonging to the technical field of wall-mounted boilers. Background Art

[0002] A wall-mounted boiler is a home heating and hot water supply device that relies on natural gas as its energy source. It generates heat by burning natural gas and converts this heat into hot water. This hot water is then distributed throughout the home, releasing heat to provide a warm and comfortable environment.

[0003] In densely populated areas with extensive natural gas pipeline coverage, gas-fired boilers are popular due to their clean, efficient, and economical energy supply. However, in remote and sparsely populated areas, natural gas pipeline construction is often limited by the high costs of occupying land and space resources, building extensive infrastructure, and investing manpower, material resources, and financial resources. Consequently, installing heating pipes in these areas is often impossible, making winter heating a major challenge.

[0004] Furthermore, while conventional wall-mounted boilers primarily use natural gas as fuel and generate heat through combustion, this process suffers from low heat conversion efficiency. This generally low heat conversion rate means that some of the heat energy is not effectively utilized, resulting in energy waste.

[0005] The applicant's utility model patent (publication number CN221324694U) proposes a heat energy generation structure for an oil-fired wall-mounted boiler. Although it has higher energy utilization efficiency and a more reasonable structure than traditional gas-fired wall-mounted boilers, its thermal efficiency still needs to be improved and its structure still needs to be optimized. Utility Model Content

[0006] In view of the above deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a new type of burner structure for a fuel wall-mounted boiler with higher thermal efficiency.

[0007] The burner structure of the new oil-fired wall-mounted boiler described in the utility model includes a burner body and a combustion chamber connected to the burner body. A coil and a heating plate are provided in the combustion chamber. The coil is distributed on the inner wall of the combustion chamber, and the heating plate is located in the central area of ​​the combustion chamber, facing the burner body.

[0008] The coil of the present invention is located on the inner wall of the combustion chamber, and the heating plate is located in the center of the combustion chamber, which can better absorb the heat energy of the entire combustion chamber.

[0009] The water inlet of the coil is connected to the water inlet pipe, and the water outlet of the coil is connected to the water cooling chamber located outside the burner housing through return pipe I. The water outlet of the water cooling chamber is connected to the heating plate located inside the combustion chamber through return pipe II, and the water outlet of the heating plate is connected to the water outlet pipe. The hot water in the coil enters the water cooling chamber through return pipe I, absorbing heat from the burner. This further absorbs heat, reduces the temperature of the burner's outer wall, and increases the burner's service life.

[0010] The water cooling chamber can completely wrap the burner body in the axial direction, and the end surface of the water cooling chamber is flush with the mouth of the burner body.

[0011] Furthermore, the water cooling chamber surrounds the burner shell, thereby increasing the contact area between the water cooling chamber and the burner shell.

[0012] A plurality of air inlet holes are opened on the side wall of the burner body, and the air inlet holes are connected to the air chamber between the burner body and the burner shell. The air chamber is connected to the fan through the air inlet pipe.

[0013] Among them, the burner body is sequentially provided with a fuel injector, a premixing chamber and a mixing chamber, the premixing chamber and the mixing chamber are separated by a swirl plate, and a diffusion plate is provided behind the mixing chamber; the volume of the premixing chamber is smaller than that of the mixing chamber, the swirl plate is provided with a number of swirl air ports that can cause the gas entering the mixing chamber to swirl, the edge of the diffusion plate is provided with a number of diffusion air ports that can cause the gas entering the combustion chamber to diffuse in a trumpet shape, and a straight blowing air port is provided in the center of the diffusion plate.

[0014] After initial atomization through the nozzle, the fuel is sprayed into the premixing chamber. Due to its small volume, the air and atomized fuel form a high-pressure gas inside the premixing chamber. This powerful airflow flows through the swirl air ports on the swirl plate and into the mixing chamber, ensuring a more complete mixing of the fuel and air, thereby improving combustion efficiency. The airflow within the mixing chamber passes through the diffusion and direct air ports on the diffuser plate, distributing the flame throughout the combustion chamber and fully heating the coil and heating plate, significantly improving thermal efficiency.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. Significantly Improved Thermal Efficiency: By optimizing the burner structure, introducing coils and heating plates, and integrating their heat exchange mechanism with the combustion chamber, the heat energy in the entire combustion chamber is more efficiently absorbed and utilized. This not only improves fuel combustion efficiency but also ensures maximum utilization of thermal energy, reducing energy waste.

[0017] 2. Extend the service life of the burner: The hot water in the coil enters the water cooling chamber through the return pipe, further absorbing the heat of the burner and reducing the temperature of the burner outer wall. This not only helps protect the burner from high temperature damage, but also extends its service life and reduces the user's maintenance costs.

[0018] 3. Optimized combustion process: Improvements to the internal structure of the burner, including the design of the fuel injector, premixing chamber, mixing chamber, swirl plate, and diffuser plate, ensure a more complete mixing of fuel and air and a more uniform flame distribution. This not only improves combustion stability and efficiency, but also reduces harmful emissions, contributing to a more environmentally friendly design. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the utility model;

[0020] Figure 2 It is a cross-sectional view of the utility model;

[0021] Figure 3 is a cross-sectional view of the burner body;

[0022] Figure 4 It is a schematic diagram of the water flow direction in the water-cooling chamber.

[0023] In the figure: 1. Oil pump; 2. Oil inlet pipe; 3. Fan; 4. Ignition needle; 5. Fuel injector; 6. Air inlet pipe; 7. Burner housing; 8. Return pipe II; 9. Water cooling chamber; 10. Water outlet pipe; 11. Return pipe I; 12. Air chamber; 13. Burner body; 14. Coil; 15. Combustion chamber; 16. Heating plate; 17. Premixing chamber; 18. Mixing chamber; 19. Swirl plate; 20. Swirl air outlet; 21. Diffuser plate; 22. End face; 23. Diffuser air outlet; 24. Direct air outlet. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to specific embodiments.

[0025] However, the description of the present invention is merely an embodiment of structural and even functional description, and the scope of rights of the present invention is not limited by the embodiments described herein.

[0026] For example, multiple embodiments may have various modifications and various forms, and it should be understood that the scope of rights of the present invention includes equivalents that can implement the technical idea.

[0027] like Figures 1 to 4 As shown, this embodiment is implemented through the following technical solution: it includes a burner body 13 and a combustion chamber 15 connected to the burner body 13, and a coil 14 and a heating plate 16 are provided in the combustion chamber 15. The coil 14 is distributed on the inner wall of the combustion chamber 15, and the heating plate 16 is located in the central area of ​​the combustion chamber 15, facing the burner body 13.

[0028] The water inlet of the coil 14 is connected to the water inlet pipe, and the water outlet of the coil 14 is connected to the water cooling chamber 9 outside the burner housing 7 through the return pipe I11. The water outlet of the water cooling chamber 9 is connected to the heating disk 16 in the combustion chamber 15 through the return pipe II8, and the water outlet of the heating disk 16 is connected to the water outlet pipe 10.

[0029] The water cooling chamber 9 can completely wrap the burner body 13 in the axial direction, and the end surface 22 of the water cooling chamber 9 is flush with the mouth of the burner body 13 .

[0030] The water cooling chamber 9 surrounds the burner casing 7 .

[0031] A plurality of air inlet holes are formed on the side wall of the burner body 13 , which are connected to the air chamber 12 between the burner body 13 and the burner housing 7 . The air chamber 12 is connected to the fan 3 through the air inlet pipe 6 .

[0032] The burner body 13 is provided with a fuel injector 5, a premixing chamber 17 and a mixing chamber 18 in sequence. The premixing chamber 17 and the mixing chamber 18 are separated by a swirl plate 19. A diffusion plate 21 is provided behind the mixing chamber 18. The volume of the premixing chamber 17 is smaller than that of the mixing chamber 18. The swirl plate 19 is provided with a plurality of swirl air ports 20 that can cause the gas entering the mixing chamber 18 to swirl. The edge of the diffusion plate 21 is provided with a plurality of diffusion air ports 23 that can cause the gas entering the combustion chamber 15 to diffuse in a trumpet shape. A straight air port 24 is provided in the center of the diffusion plate 21.

[0033] The new oil-fired wall-mounted boiler uses fuel as a heat source. The combustion system burns the fuel, generating heat that heats the water in the coils 14 and heating plate 16. Fuel is injected from the oil reservoir into the burner body 13 via the oil pump 1, the oil inlet pipe 2, and the fuel injector 5. Air is then drawn into the burner through the air inlet holes in the burner body wall by the fan 3. The fuel and air mix, and the ignition needle 4 ignites the fuel, producing a flame in the combustion chamber 15. The heat generated by the combustion is transferred to the coils 14 and heating plate 16 within the combustion chamber 15, heating the water there and turning it into hot water. The hot water in the coils 14 enters the water cooling chamber 9 through the return pipe I11, absorbing heat from the burner, further absorbing heat, lowering the temperature of the burner housing 7 and extending the burner's service life. The water, after passing through the water cooling chamber 9, then enters the heating plate 16 within the combustion chamber 15 through the return pipe II8, absorbing further heat from the combustion chamber, significantly improving heat utilization. Compared with the previous two-time heat absorption, the present invention improves thermal efficiency by tertiary heat absorption, and the coil 14 is located at the inner wall of the combustion chamber, and the heating plate 16 is located at the center of the combustion chamber, which can better absorb the heat energy of the entire combustion chamber.

[0034] During this process, the fuel is initially atomized by the fuel injector 5 and then sprayed into the premixing chamber 17. Due to the small volume of the premixing chamber 17, the air and atomized fuel form a high-pressure gas inside the premixing chamber 17. This powerful airflow passes through the swirl air ports 20 on the swirl plate 19 and enters the mixing chamber 18, ensuring a more complete mixing of the fuel and air, thereby improving combustion efficiency. The airflow within the mixing chamber 18 passes through the diffusion air ports 23 and the direct air ports 24 on the diffusion plate 21, spreading the flame throughout the combustion chamber 15. This ensures that both the coil 14 and the heating plate 16 are fully heated, thereby significantly improving thermal efficiency.

[0035] Of course, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of the embodiments of the present invention. The present invention is not limited to the above examples. Equivalent changes and improvements made by ordinary technicians in this technical field within the essential scope of the present invention should all fall within the scope of the patent of the present invention.

Claims

1. A new type of burner structure for oil-fired wall-mounted boiler, characterized in that: The invention comprises a burner body (13) and a combustion chamber (15) connected to the burner body (13). A coil (14) and a heating plate (16) are arranged in the combustion chamber (15). The coil (14) is distributed on the inner wall of the combustion chamber (15). The heating plate (16) is located in the central area of ​​the combustion chamber (15) and faces the burner body (13).

2. The burner structure of the new oil-fired wall-mounted boiler according to claim 1 is characterized in that: The water inlet of the coil (14) is connected to the water inlet pipe, the water outlet of the coil (14) is connected to the water cooling chamber (9) outside the burner housing (7) through the return pipe I (11), the water outlet of the water cooling chamber (9) is connected to the heating disk (16) in the combustion chamber (15) through the return pipe II (8), and the water outlet of the heating disk (16) is connected to the water outlet pipe (10).

3. The burner structure of the new oil-fired wall-mounted boiler according to claim 2 is characterized in that: The water cooling chamber (9) can completely wrap the burner body (13) in the axial direction, and the end surface (22) of the water cooling chamber (9) is flush with the mouth of the burner body (13).

4. The burner structure of the new oil-fired wall-mounted boiler according to claim 2 is characterized in that: The water cooling chamber (9) surrounds the burner housing (7).

5. The burner structure of the new oil-fired wall-mounted boiler according to claim 1 is characterized in that: A plurality of air inlet holes are provided on the side wall of the burner body (13), and the air inlet holes are connected to the air chamber (12) between the burner body (13) and the burner housing (7). The air chamber (12) is connected to the fan (3) through the air inlet pipe (6).

6. The burner structure of the novel oil-fired wall-mounted boiler according to claim 1 is characterized in that: A fuel injection nozzle (5), a premixing chamber (17) and a mixing chamber (18) are sequentially arranged in the burner body (13). The premixing chamber (17) and the mixing chamber (18) are separated by a swirl plate (19). A diffusion plate (21) is arranged behind the mixing chamber (18). The volume of the premixing chamber (17) is smaller than that of the mixing chamber (18). The swirl plate (19) is provided with a plurality of swirl air ports (20) for causing the gas entering the mixing chamber (18) to generate a swirl flow. The diffusion plate (21) is provided with a plurality of diffusion air ports (23) on the edge thereof for causing the gas entering the combustion chamber (15) to generate a trumpet-shaped diffusion. A straight air port (24) is provided in the center of the diffusion plate (21).

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