An alcohol-based gasification wall-mounted boiler

Abstract

The invention discloses an alcohol-based gasification wall-mounted boiler, which relates to the technical field of heating equipment, including a furnace surrounded by furnace walls, a heating coil arranged in the furnace, and also includes a cylindrical side wall and bottom surface fixedly installed in the furnace, an annular sandwich burner with a hollow interlayer and an opening facing upward, a fuel tray fixedly connected to the bottom and side wall in the annular sandwich burner, an oil overflow head penetrating the thickness of the annular sandwich burner and the fuel tray, a peristaltic pump and an oil tank connected to the oil overflow head through a pipeline, an air supply pipe connected to the inner cavity of the annular sandwich burner interlayer, and an air inlet fan connected to the air supply pipe, the inner side wall surface of the annular sandwich burner is evenly distributed with steam nozzles along the circumference, and an ignition needle is arranged in the opening of the fuel tray. The invention enables the flame in the furnace to be fully burned, the flame temperature is high, the combustion efficiency of the wall-mounted boiler is effectively improved, the working pressure is small, the equipment is simple and the cost is low, and the problem of blockage of the pressurized nozzle is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of heating equipment, and belongs to a wall-mounted boiler using alcohol-based fuel. Background Art

[0002] In current wall-mounted boilers, liquid fuel is usually pressurized and atomized, and then ignited by electronic ignition to heat the heating coil. This method has high pressure requirements, which increases the risk accordingly. At the same time, a high-power igniter must be used, which consumes a lot of energy and has high requirements for equipment. In addition, the atomization method used in existing wall-mounted boilers often causes problems such as poor nozzle atomization and difficulty in ignition; due to the high pressure requirements for liquid fuel and the thin diameter of the delivery pipe, the nozzle is prone to being blocked by impurities. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an alcohol-based gasification wall-mounted boiler, which avoids pressurizing and atomizing liquid fuel, utilizes a low-power igniter to ignite so that the flame in the furnace is fully burned, the flame temperature is high, the heating area of ​​the coil is increased, and the combustion efficiency of the wall-mounted boiler is effectively improved; the working pressure is small, the equipment is simple and the cost is low, and the pump power is reduced. Since the entire system adopts a fuel supply solution with a large pipe diameter and a low flow rate, the problem of clogging of the pressurized nozzle is avoided, the failure rate and after-sales maintenance rate are significantly reduced, and the service life of the overall machine is extended.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] The invention discloses an alcohol-based gasification wall-mounted boiler, comprising a furnace surrounded by furnace walls, a heating coil arranged in the furnace, and also comprising a cylindrical side wall and bottom surface of the furnace, an annular sandwich burner with an opening upward and a hollow interlayer, fixedly installed in the furnace, a fuel tray with the bottom and side walls fixedly connected in the annular sandwich burner, an oil overflow head penetrating the thickness of the annular sandwich burner and the fuel tray, a peristaltic pump and an oil tank connected to the oil overflow head through a pipeline, an air supply pipe connected to the inner cavity of the interlayer of the annular sandwich burner, and an air inlet fan connected to the air supply pipe, the inner side wall surface of the annular sandwich burner is uniformly distributed with steam nozzles along the circumference, and an ignition needle is arranged in the opening of the fuel tray.

[0006] A further improvement of the technical solution of the present invention is that it also includes an exhaust fan arranged on the outer surface of the top of the furnace and connected to the furnace.

[0007] A further improvement of the technical solution of the present invention is that the height of the steam nozzle is higher than the height of the oil overflow head.

[0008] A further improvement of the technical solution of the present invention is that the height of the ignition needle is lower than the height of the oil overflow head.

[0009] A further improvement of the technical solution of the present invention is that the upper end of the oil spill head is a hollow copper tube with a conical structure with the bottom facing upward, and the side wall of the oil spill head is provided with gaps uniformly distributed along the circumference with consistent height.

[0010] A further improvement of the technical solution of the present invention is that a fuel return pipe is also provided to connect the fuel tank and the bottom of the fuel tray.

[0011] Due to the adoption of the above technical solution, the technical progress achieved by the present invention is:

[0012] The present invention avoids pressurizing and atomizing liquid fuel, and utilizes a low-power igniter for ignition so that the flame in the furnace is fully burned. The flame temperature is high, the heating area of ​​the coil is increased, and the combustion efficiency of the wall-mounted boiler is effectively improved; the working pressure is small, the equipment is simple and the cost is low, and the pump power is reduced. Since the entire system adopts a fuel supply solution with a large pipe diameter and a low flow rate, the problem of clogging of the pressurized nozzle is avoided, the failure rate and after-sales maintenance rate are significantly reduced, and the service life of the overall machine is extended.

[0013] The annular sandwich burner and the fuel tray are fixedly connected, so that the fuel in the annular sandwich burner is effectively heated. The inner side wall of the annular sandwich burner is evenly distributed with steam nozzles along the circumference, so that the heated and vaporized fuel is ignited by the fuel in the combustion tray inside the annular sandwich burner, avoiding secondary ignition and simplifying the overall structure.

[0014] The air supply pipe is connected with the inner cavity of the annular sandwich burner to provide oxygen for igniting all fuels, effectively control the wind speed and air volume, and control the fuel combustion position at the same time to prevent the ignited vaporized fuel from flashing back from the steam nozzle.

[0015] The height of the steam nozzle is higher than the height of the oil spill head, which prevents the oil spill head from blocking the spray of vaporized fuel. At the same time, the vaporized fuel will fall and eventually be ignited by the combustion disk, which prevents the combustion disk from being too close to the steam nozzle and causing flashback. The height of the ignition needle is lower than the height of the oil spill head, which ensures that the ignition needle can ignite the liquid fuel flowing out of the oil spill head, preventing the problem of failure to ignite the fuel in the combustion disk.

[0016] The upper end of the oil spill head is a cone with the bottom facing upwards, and the side wall of the cone is provided with highly consistent gaps evenly distributed along the circumference. These increase the volume of the end of the oil spill head, increase the strength of the oil spill head, prevent damage to the oil spill head, and at the same time increase the oil outlet area of ​​the oil spill head, increase the oil outlet efficiency, and prevent poor oil circulation and pipeline blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the cutaway structure of the present invention;

[0018] Figure 2is a partially cutaway schematic diagram of an annular burner of the present invention;

[0019] Among them, 1. furnace, 2. ignition needle, 3. air inlet fan, 4. air supply pipe, 5. exhaust fan, 6. oil overflow head, 7. steam nozzle, 8. peristaltic pump, 9. annular sandwich burner, 10. fuel tray, 11. fuel return pipe, 12. oil tank, 13. heating coil, 14. furnace wall, 15. liquid fuel. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with embodiments:

[0021] like Figure 1 and Figure 2 As shown, an alcohol-based gasification wall-mounted boiler includes a furnace wall 14, a heating coil 13, an annular sandwich burner 9, a fuel tray 10, an oil overflow head 6, a peristaltic pump 8, an oil tank 12, an air supply pipe 4, an exhaust fan 5, and a fuel return pipe 11. The furnace wall 14 surrounds a furnace 1, the heating coil 13 is arranged in the furnace 1, the annular sandwich burner 9 is fixedly installed in the furnace 1, the annular sandwich burner 9 is cylindrical, and liquid fuel is arranged inside the annular sandwich burner 9. A separate container for holding liquid fuel and a pump body for pumping liquid fuel into the annular sandwich burner 9 are also provided. Liquid fuel 15 is contained in the fuel tray 10, and a hollow interlayer is arranged on the side wall and bottom surface of the annular sandwich burner 9, and the opening of the annular sandwich burner 9 faces upward. The bottom and side wall of the fuel tray 10 are fixedly connected to the inside of the annular sandwich burner 9, and are integrated with the bottom plate and side wall of the annular sandwich burner 9. The annular sandwich burner 9 and the fuel tray 10 have good heat conduction. The oil overflow head 6 runs through the thickness of the annular sandwich burner 9 and the fuel tray 10. The peristaltic pump 8 and the oil tank 12 are connected to the oil overflow head 6 through a pipeline. The air supply pipe 4 is connected to the inner cavity of the annular sandwich burner 9 sandwich. The air inlet fan 3 is connected to the air supply pipe 4, and the air supply pipe 4 is made of refractory material. The exhaust fan 5 is arranged on the top outer surface of the furnace 1, and the exhaust fan 5 is connected to the furnace 1. The exhaust fan 5 can control the size of its vent and the ventilation speed. The peristaltic pump 8 is a low-power fuel supply pump, and the liquid volume provided per hour can be adjusted, and the adjustment range is 0.5L to 1.0L. The fuel return pipe 11 connects the fuel tank 12 and the fuel tray 10 . The connecting position between the fuel return pipe 11 and the fuel tray 10 is at the bottom of the fuel tray 10 .

[0022] The inner side wall surface of the annular sandwich burner 9 is provided with a steam nozzle 7, which is evenly distributed along the circumference, and the height of the steam nozzle 7 is higher than the height of the oil overflow head 6. An ignition needle 2 is provided in the opening of the fuel tray 10, and the ignition needle 2 extends from the side wall or bottom of the annular sandwich burner 9 into the opening of the annular sandwich burner 9. The height of the ignition needle 2 is lower than the height of the oil overflow head 6. The oil overflow head 6 is a hollow copper tube, and the end of the oil overflow head 6 is a cone with the bottom facing upward. The side wall of the cone part of the oil overflow head is provided with a plurality of slits evenly distributed along the circumference with the same height, and the slits are long slits extending in the vertical direction.

[0023] The liquid fuel 15 selected in the combustion disk 10 is methanol. When there is fuel in the annular sandwich burner 9, the fuel in the annular sandwich burner 9 is methanol or other low boiling point fuel.

[0024] Working principle or usage:

[0025] like Figure 1 As shown, there are two specific embodiments. In the first embodiment, the fuel is pumped into the annular sandwich burner 9 by a peristaltic pump 8, and the interlayer of the annular sandwich burner 9 is connected to the copper oil overflow head 6 in the center of the fuel tray 10. At the beginning of ignition, the fuel overflows from the lower oil overflow head 6 and is distributed at the bottom of the fuel tray 10. It is then ignited by the ignition needle 2, and the flame temperature begins to preheat the methanol fuel in the interlayer of the annular sandwich burner 9 until the methanol boils. The air intake fan 3 blows air from the interlayer of the annular sandwich burner 9 into the annular sandwich burner 9. The air mixed with fuel steam is ejected from the steam nozzle 7 at a higher position on the annular sandwich burner 9, and the flame begins to erupt and burn violently. Through the coordination of the air intake fan 3 and the peristaltic pump 8, the burning flame reaches the best combustion state. In the second embodiment, the fuel is directly pumped into the fuel tray 10, ignited by the ignition needle 2, and a large amount of air is introduced into the annular sandwich burner 9. The unburned fuel flows back to the fuel tank 12 through the fuel return pipe 11. In the above two cases, when the combustion needs to be stopped, the peristaltic pump 8 is first turned off to stop supplying fuel, and the exhaust volume of the blower 3 is increased at the same time, and the flame in the furnace 1 starts to burn violently. After about 20 seconds, the combustion stops after the fuel is exhausted. The above system coordinates with the temperature control system of the wall-mounted boiler to achieve the effect of controlling the heating parameters.

Claims

1. An alcohol-based gasification wall-mounted boiler, comprising a furnace (1) surrounded by a furnace wall (14), and a heating coil (13) arranged in the furnace (1), characterized in that: The invention also comprises an annular sandwich burner (9) fixedly mounted in the furnace (1) and having a cylindrical side wall and a bottom surface provided with a hollow interlayer and opening upward, a fuel tray (10) whose bottom and side walls are fixedly connected to the annular sandwich burner (9), an oil overflow head (6) penetrating the thickness of the annular sandwich burner (9) and the fuel tray (10), a peristaltic pump (8) and an oil tank (12) connected to the oil overflow head (6) through a pipeline, and a gasket (12) connected to the inner cavity of the interlayer of the annular sandwich burner (9). The invention relates to a fuel tank (10) and a fuel tank (11) comprising an air supply pipe (4) and an air inlet fan (3) connected to the air supply pipe (4); the inner side wall of the annular sandwich burner (9) is uniformly distributed with steam nozzles (7) along the circumference; an ignition needle (2) is arranged in the opening of the fuel tray (10); the height of the steam nozzle (7) is higher than the height of the oil overflow head (6); the upper end of the oil overflow head (6) is a hollow copper tube with a conical structure and the bottom surface is facing upwards; the side wall of the oil overflow head (6) is provided with gaps uniformly distributed along the circumference with the same height; The fuel is pumped into the annular sandwich burner (9) by a peristaltic pump (8), the annular sandwich contains methanol fuel, and the sandwich of the annular sandwich burner (9) is connected to the copper oil overflow head (6) at the center of the fuel tray (10).

2. The alcohol-based gasification wall-mounted boiler according to claim 1, characterized in that: It also includes an exhaust fan (5) which is arranged on the outer surface of the top of the furnace (1) and is connected to the furnace (1).

3. The alcohol-based gasification wall-mounted boiler according to claim 1, characterized in that: The height of the ignition needle (2) is lower than the height of the oil overflow head (6).

4. The alcohol-based gasification wall-mounted boiler according to claim 1, characterized in that: A fuel return pipe (11) is also provided to connect the fuel tank (12) and the bottom of the fuel tray (10).

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