Methanol vaporizing type combustion stove

Abstract

This invention discloses a methanol vaporization combustion stove, belonging to the technical field of liquid fuel combustion equipment, to solve the problems of insufficient methanol vaporization and its instability in mixing with air. The stove consists of a shell and a base plate forming a sealed space. Inside the shell are a burner, a chassis, a combustion chamber cover, a combustion fan, and a flame-gathering hood. The chassis is supported by an oil-absorbing porous medium, internal oil pipes, and a vaporization pipe. The fuel vaporization pipe is fitted outside the internal oil pipes and connected to a vaporization cap, with a methanol vapor outlet on its side wall. The burner side wall has a primary air inlet and a secondary air inlet, and a temperature sensor is located below the vaporization cap. During ignition and low-power stages, methanol is vaporized by the oil-absorbing porous medium. After the temperature rises, methanol is vaporized by the fuel vaporization pipe and the vaporization cap. The generated methanol vapor mixes and burns with staged air supply. This structure improves the degree of methanol vaporization and mixing uniformity, enhances combustion stability, and is suitable for outdoor cooking and heating.

Description

Technical Field

[0001] This invention relates to the field of liquid fuel combustion equipment technology, specifically to the structural design of a methanol vaporization combustion stove, and more particularly to a portable stove that uses pre-vaporization combustion technology to achieve full vaporization of methanol fuel and staged air supply combustion, which can be widely used in scenarios such as outdoor camping, car heating, and outdoor cooking. Background Technology

[0002] With the significant improvement in people's living standards and the increasing popularity of outdoor activities, the demand for outdoor camping, car heating, and outdoor cooking has greatly increased. Therefore, there is a need for portable stoves with high integration, high thermal conversion efficiency, and easy portability. Methanol, as a clean liquid fuel, has advantages such as high oxygen content, low combustion pollutant emissions, convenient storage and transportation, and wide availability, making it an ideal fuel choice for portable stoves. As the core component of the stove, the burner has a decisive impact on the combustion efficiency of methanol fuel. Therefore, improving the combustion efficiency of methanol fuel is an important way to improve the overall efficiency of the combustion heater. Pre-vaporization combustion technology is a relatively advanced and usable combustion technology. By pre-vaporizing liquid fuel into steam before it enters the combustion chamber and then mixing it with air for combustion, the combustion efficiency of methanol fuel can be significantly improved, and pollutant emissions reduced. This is an important direction for the current development of liquid fuel stoves. However, current solutions for improving combustion efficiency using fuel vaporization technology still have shortcomings. After fuel vaporization, the fuel vapor in the central area of ​​the combustion chamber is relatively far from the air inlet on the combustion chamber wall, resulting in insufficient mixing between the fuel vapor and air. This leads to incomplete combustion, decreased combustion efficiency, and increased pollutant emissions. Patent 201510641333.7 proposes a camping combustion heating stove. After combustion stabilizes, the liquid fuel absorbs heat and vaporizes, and a flow stabilizer is included to improve the mixing degree of fuel vapor and air. However, when the air mixture is insufficient during combustion, the device cannot replenish the air in time, resulting in incomplete combustion, reduced combustion efficiency, and easy carbon buildup on the inner wall of the combustion chamber, affecting the stove's lifespan and safety. Furthermore, existing vaporization stoves also suffer from incomplete fuel vaporization, ignition difficulties, unstable combustion under high power conditions, and a lack of temperature monitoring methods, hindering the widespread application of methanol vaporization combustion stoves. Summary of the Invention

[0003] The purpose of this invention is to provide a methanol vaporization combustion stove. Through a dual vaporization structure of fuel vaporization pipe and oil-absorbing porous medium working together for vaporization, an air intake structure with primary and secondary air intake staged air supply, and an auxiliary vaporization structure with radiant heating of vaporization cap, methanol fuel can be fully vaporized and evenly mixed with air, achieving staged air supply and complete combustion, thereby solving the problems of low combustion efficiency, incomplete combustion, and easy carbon deposit formation in existing stoves.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A methanol vaporization combustion stove includes a stove shell (8) and a base plate (1). The stove shell (8) and the base plate (1) form a sealed space for the stove and are fixed together by hexagonal screws. A burner (12) is installed inside the stove shell (8). A flame-gathering hood (9) is installed at the upper end of the burner (12) and is welded to the burner (12). The burner (12) is fixed inside the stove shell (8) by a chassis (14). An oil-absorbing porous medium (4), an internal oil pipe (6), and a vaporization pipe support (5) are installed on the chassis (14). The internal oil pipe (6) is connected to the chassis (14) by a threaded connection, and the vaporization pipe support (5) is also installed on the chassis (14). A fuel vaporization pipe (11) is installed on the upper part of the stove housing (8). The fuel vaporization pipe (11) is sleeved on the outside of the internal oil pipe (6). A vaporization cap (10) is welded to the upper end of the fuel vaporization pipe (11). An external oil pipe (3) is connected to the outside of the chassis (14). The external oil pipe (3) extends out of the oil pipe hole on the stove housing (8). The combustion chamber cover (2) seals the burner (12) inside the stove housing (8) to form a sealed combustion chamber area. A wave-shaped top spring is used to press the combustion chamber between the combustion chamber cover (2) and the chassis (14). A combustion fan (7) is connected to the air inlet of the stove housing (8). The combustion fan (7) is connected to the stove housing (8) by a round-head screw.

[0006] A further improvement of the present invention is that the porosity of the oil-absorbing porous medium installed on the chassis is 0.6 to 0.85, and the oil-absorbing porous medium is porous foam or porous fiber felt stainless steel; when the oil-absorbing porous medium is porous foam stainless steel, the average pore diameter is 0.18 to 0.42 mm; when the oil-absorbing porous medium is porous fiber felt stainless steel, the average filament diameter is 25 to 40 μm.

[0007] A further improvement of the present invention is that the diameter of the fuel vaporization pipe is 16-20 mm, the diameter of the internal oil pipe is 8-10 mm, a plurality of steam fuel outlet holes are uniformly opened circumferentially on the side wall of the fuel vaporization pipe, the diameter of the steam fuel outlet holes is 2-6 mm, and the distance between the end of the internal oil pipe and the end of the fuel vaporization pipe is 10-20 mm.

[0008] A further improvement of the present invention is that the vaporization cap has an inner diameter of 25-30 mm, an outer diameter of 50-70 mm, and a height of 10 mm; the vaporization cap is welded together with the fuel vaporization pipe, and the fuel vaporization pipe is made of high-temperature resistant stainless steel.

[0009] A further improvement of this invention is that the burner has several rows of air inlets distributed circumferentially on its sidewall. The air inlets are divided into primary air inlets and secondary air inlets. The primary air inlets are arranged in three rows at the bottom. The first row has 11 to 15 air inlets, which are inclined and have an air inlet angle of 30° to 45° with the sidewall of the combustion chamber. The diameter of each air inlet is 2 to 3 mm, and the total area of ​​the air inlets accounts for 0.1 to 1% of the surface area of ​​the sidewall of the combustion chamber. The second and third rows of air inlets are staggered and have 18 to 22 holes. The secondary air inlets are located at the front end of the burner and are divided into two rows with 25 to 30 holes in each row. The diameter of the holes is 3 mm. The ratio of the hole area of ​​the primary air inlets to that of the secondary air inlets is 1:5.

[0010] A further improvement of the present invention is that the height of the fire-gathering cover is 10-20mm, the lower diameter is 80mm, the upper diameter is 30-40mm, and the tilt angle of the fire-gathering cover is 30°-50°.

[0011] A further improvement of the present invention is that it also includes a temperature sensor, which passes through the stove housing and the combustion chamber. The temperature sensor is located inside the combustion chamber and placed below the vaporization cap, for real-time sensing of the temperature inside the combustion chamber.

[0012] A further improvement of the present invention is that the combustion-supporting fan is fixed on the inner wall of the stove housing. Part of the air supplied by the combustion-supporting fan enters the combustion chamber through the air inlet and mixes with the fuel vapor, while the other part of the air directly enters the secondary air inlet to provide secondary air for the combustion of the mixture.

[0013] Compared with the prior art, the present invention has the following advantages: By setting a first row of inclined air inlets on the side wall of the burner, the present invention allows air to be blown towards the central area of ​​the oil-absorbing porous medium, which can accelerate the vaporization of fuel oil in the oil-absorbing porous medium and prevent the air from being blown towards the boundary of the oil-absorbing porous medium due to excessively large or small angles, thus affecting the fuel vaporization effect; at the same time, by setting a fuel vaporization pipe at the center of the combustion chamber, the fuel vaporizes into steam and is sprayed out from the steam hole to mix with the air. Since the sprayed fuel vapor and the primary air entering the combustion chamber form an opposing mixture, the steam and air are mixed more thoroughly, which significantly improves the problem of uneven mixing of fuel vapor and air in the central area of ​​the combustion chamber.

[0014] Furthermore, a vaporization cap is installed at the end of the fuel vaporization pipe. The vapor and primary air mix thoroughly and burn in the combustion chamber. On one hand, the vaporization cap heats the fuel in the porous medium of the combustion chamber cover area through radiation, causing it to vaporize. On the other hand, an internal fuel pipe extends near the vaporization cap, vaporizing the supplied fuel and then injecting it into the combustion chamber to mix with the primary air. Some unvaporized fuel liquid in the fuel vaporization pipe is carried into the combustion chamber by the fuel vapor, where it is further heated by thermal radiation, preventing incomplete combustion. During ignition and low-power combustion, the fuel vaporization pipe can be omitted, and the porous medium can be used directly for vaporization. However, during high-power combustion, once the fuel vaporization pipe reaches the temperature sufficient to vaporize the fuel, the porous medium is no longer used; instead, the fuel vaporization pipe is used directly. This allows for flexible switching of vaporization methods under different operating conditions, ensuring combustion stability.

[0015] Furthermore, through the staged air supply structure of the primary and secondary air inlets, the fuel vaporized into fuel vapor is fully mixed with the primary air blown into the combustion chamber. When the mixture burns in the combustion chamber, it can be supplied with secondary air through the secondary air inlet, so that the fuel can burn completely, less carbon deposits are generated, pollutant emissions are reduced, and thus combustion efficiency is improved. The orifice area ratio of the primary and secondary air inlets is 1:5, which ensures a reasonable ratio of primary air to secondary air, so that the combustion process is always in an oxygen-rich state.

[0016] Furthermore, a temperature sensor passes through the cooktop housing and the combustion chamber, and is located inside the combustion chamber below the vaporization cap. When fuel burns in the combustion chamber, the temperature sensor can detect the temperature inside the combustion chamber in real time, thereby reflecting whether the fuel is ignited and whether the combustion is complete. When it is detected that the fuel has not ignited or is not burning completely, the combustion pump can be automatically shut off to prevent fuel waste and excessive carbon buildup, thus improving the safety and economy of the cooktop operation.

[0017] Furthermore, the chassis is equipped with a porous oil-absorbing medium to carry the fuel, providing real-time fuel reserves and supply for combustion in the combustion chamber. An auxiliary combustion fan blows air into the furnace through the air inlet, providing sufficient air for fuel combustion, ensuring complete combustion and reducing carbon buildup. The overall structure is compact and highly integrated, making it easy to carry and use, suitable for various applications such as outdoor camping, vehicle heating, and outdoor cooking. Attached Figure Description

[0018] Figure 1 This is a structural assembly diagram of the methanol vaporization combustion stove of the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of the methanol vaporization combustion stove of the present invention.

[0020] Figure 3 This is a schematic diagram of the fuel vaporization pipe structure of the present invention.

[0021] Figure 4 yes Figure 2 A magnified view of the area within the middle circle.

[0022] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Combustion chamber; 3. External oil pipe; 4. Oil felt; 5. Vaporization pipe support; 6. Internal oil pipe; 7. Fan; 8. Stove shell; 9. Flame hood; 10. Vaporization cap; 11. Vaporization pipe; 12. Burner; 13. Metal fiber felt; 14. Chassis. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings.

[0024] See Figure 1 , Figure 2 , Figure 3 and Figure 4 This invention discloses a methanol vaporization combustion stove, comprising a stove housing 8 and a base plate 1. The stove housing 8 and the base plate 1 form a sealed space for the stove, and are fixed together by hexagonal screws to form the external protective structure of the stove. A burner 12 is disposed within the stove housing 8. The side wall of the burner 12 has mounting holes for an ignition mechanism, which extends into the burner 12 through these mounting holes. An oil-absorbing porous medium 4 is disposed on the inner wall of the base 14, and the oil-absorbing porous medium 4 is tightly attached to the inner surface of the base 14. The distance between the ignition mechanism and the oil-absorbing porous medium 4 is 1-5 mm to ensure reliable ignition. A fuel vaporization pipe 11 and an internal oil pipe 6 are disposed along the centerline of the burner 12, with the front end of the fuel vaporization pipe 11 contacting the combustion chamber cover 2. The fuel vaporization pipe 11 has several uniformly distributed steam and fuel outlet holes circumferentially arranged; the rear end of the fuel vaporization pipe 11 extends into a vaporization cap 10. Air enters the air passage through the air inlet and then enters the burner 12.

[0025] See Figure 1 , Figure 2 A flame-concentrating shroud 9 is installed at the upper end of the burner 12. The flame-concentrating shroud 9 is welded to the burner 12. The height of the flame-concentrating shroud 9 is 10-20mm, the lower diameter is 80mm, the upper diameter is 30-40mm, and the tilt angle of the flame-concentrating shroud 9 is 30°-50°. The function of the flame-concentrating shroud 9 is to concentrate the flame, improve the rigidity and stability of the flame, and guide the flame through its tilted inner wall, so that the flame is concentrated and sprayed upward, thereby improving thermal efficiency. The burner 12 is fixed inside the stove housing 8 by a chassis 14. An oil-absorbing porous medium 4, an internal oil pipe 6, and a vaporization pipe support 5 are respectively installed on the chassis 14. The internal oil pipe 6 is connected to the chassis 14 by a threaded connection, which facilitates assembly, disassembly, and maintenance.

[0026] See Figure 2 , Figure 3 The oil-absorbing porous medium 4 is annular in shape, with its inner diameter equal to the outer diameter of the internal oil pipe 6, allowing it to fit tightly around the internal oil pipe 6. The porosity of the oil-absorbing porous medium 4 is 0.6–0.85, and it is made of porous foam-like or porous fiber-felt stainless steel. When the oil-absorbing porous medium is porous foam-like stainless steel, the average pore size is 0.18–0.42 mm; when it is porous fiber-felt stainless steel, the average filament diameter is 25–40 μm. Fuel vaporizes in the oil-absorbing porous medium 4, which serves as both a carrier for fuel vaporization and a fuel-carrying medium, providing real-time fuel reserves and supply for combustion in the combustion chamber. The stainless steel material ensures the corrosion resistance and structural stability of the oil-absorbing porous medium under high-temperature conditions.

[0027] See Figure 1 , Figure 3 The fuel vaporization pipe 11 is sleeved outside the internal oil pipe 6. The rear end of the fuel vaporization pipe 11 is connected to the vaporization cap 10. Several steam fuel outlet holes are evenly opened on the side wall of the lower half of the fuel vaporization pipe 11. The diameter of the fuel vaporization pipe 11 is 16-20mm. This prevents the fuel vaporization pipe 11 from being too large, which would result in an excessively large heating area and cause fuel pyrolysis, while a diameter that is too small would result in incomplete vaporization, with some unvaporized fuel liquid being carried into the burner 12 by the fuel vapor, causing incomplete combustion. The diameter of the internal oil pipe 6 is 8-10mm, so that the fuel can be sprayed directly into the vaporization cap 10. The diameter of the steam fuel outlet is 2-6mm, so that the fuel vapor can be sprayed out quickly and mixed thoroughly with the air. This prevents the fuel vapor from spraying out of the steam fuel outlet from being too slow, which would affect the mixing with the air. At the same time, it avoids the fuel vapor from staying in the fuel vaporization pipe for too long due to the diameter of the hole being too small, which would cause excessive heat absorption and fuel pyrolysis. The distance between the end of the internal oil pipe 6 and the end of the fuel vaporization pipe 11 is 10-20mm, so that the fuel can be sprayed out of the internal oil pipe 6 and onto the inner surface of the vaporization cap 10 more effectively. This prevents the distance from being too large, which would prevent the fuel from reaching the inner surface of the vaporization cap 10, and the distance from being too small, which would affect the fuel spraying out of the internal oil pipe 6. The fuel vaporization pipe 11 is welded to the vaporization cap 10. The fuel vaporization pipe 11 is made of high-temperature resistant stainless steel.

[0028] See Figure 3 The vaporizer cap 10 has an internal diameter of 25–30 mm, an external diameter of 50–70 mm, and a height of 10 mm. The vaporizer cap 10 facilitates fuel vaporization and, through radiation, heats the fuel within the porous oil-absorbing medium 4 in the combustion chamber cover area, causing it to vaporize. Simultaneously, it further heats the fuel vapor, allowing for better mixing with air and promoting complete combustion. The size design of the vaporizer cap 10 ensures sufficient radiant area and heat capacity, stably providing radiant heat for the fuel vaporization process.

[0029] See Figure 1 , Figure 2 The burner 12 has several rows of air inlets distributed circumferentially on its sidewalls. The number of air inlets in each row gradually decreases from the end to the tail of the burner 12. The air inlets are divided into primary air inlets and secondary air inlets. The primary air inlets are arranged in three rows at the bottom. The first row has 11 to 15 air inlets, which are inclined, forming an angle of 30° to 45° with the sidewall of the burner 12. Each air inlet has a diameter of 2 to 3 mm, and the total area of ​​the air inlets accounts for 0.1% to 1% of the surface area of ​​the burner 12's sidewall. The second and third rows of air inlets are staggered, with 18 to 22 holes each. The secondary air inlets are located at the front end of the burner 12, divided into two rows of 25 to 30 holes each. The diameter of the holes is 3 mm, and the ratio of the hole area of ​​the primary air inlets to the secondary air inlets is 1:5. The first row of air intake holes is angled so that air is blown towards the central area of ​​the oil-absorbing porous medium 4, accelerating fuel vaporization and preventing air from being blown towards the boundary of the oil-absorbing porous medium 4 due to an excessively large or small angle, thus having little effect on fuel vaporization. The second and third rows of air intake holes are staggered, creating turbulence in the air within the combustion chamber, further improving the uniformity of fuel vapor-air mixing.

[0030] See Figure 2 The combustion air blower 7 is connected to the air inlet of the stove housing 8. The combustion air blower 7 is connected to the stove housing 8 by two round-head screws and is fixed to the inner wall of the stove housing 8. It is used to deliver combustion air to the burner 12. Part of the air supplied by the combustion air blower 7 enters the burner 12 through the air inlet and mixes with fuel vapor; the other part of the air directly enters the secondary air inlet to provide secondary air for the combustion of the mixture. An external oil pipe 3 is connected to the outside of the chassis 14. The external oil pipe 3 extends out of the oil pipe hole on the stove housing 8 and is connected to an external oil supply system to deliver methanol fuel to the internal oil pipe 6. The combustion chamber cover 2 encloses the burner 12 inside the stove housing 8, forming a sealed combustion chamber area. A wave-shaped top spring is used to press the combustion chamber between the combustion chamber cover 2 and the chassis 14. The wave-shaped top spring can compensate for thermal expansion and maintain the sealing of the combustion chamber.

[0031] This invention also includes a temperature sensor that passes through the cooktop housing 8 and the burner 12. The temperature sensor is located inside the burner 12 and positioned below the vaporization cap 12. When fuel burns in the combustion chamber, the temperature sensor can detect the internal temperature of the combustion chamber in real time, thereby reflecting whether the fuel is ignited and whether combustion is complete. If it is detected that the fuel has not ignited or is not burning completely, the combustion pump can be automatically shut off to prevent fuel waste and excessive carbon buildup. The temperature sensor enables the cooktop to have status monitoring and safety protection functions, improving the reliability and economy of the cooktop's operation.

[0032] The working process of this invention is as follows: After the combustion fan 7 is started, external air is blown into the air passage inside the stove housing 8 through the air inlet; methanol fuel is supplied to the burner 12 through the external oil pipe 3 and the internal oil pipe 6. During the ignition and low-power combustion stages, the fuel mainly relies on the oil-absorbing porous medium 4 for vaporization. The primary air blown in through the first row of inclined air inlets accelerates the vaporization of the fuel in the oil-absorbing porous medium. The fuel vapor mixes with the primary air in the combustion chamber and is ignited by the ignition mechanism. As combustion proceeds, the temperature of the combustion chamber rises. After the fuel vaporization pipe 11 and the vaporization cap 10 are heated to a temperature that can vaporize the fuel, the fuel mainly relies on the fuel vaporization pipe 11 for vaporization. The fuel is sprayed from the internal oil pipe 6 to the inner surface of the vaporization cap 10 for vaporization, and then sprayed out through the vapor fuel outlet on the side wall of the fuel vaporization pipe 11, forming a counter-mixing with the primary air, resulting in more thorough mixing; the radiation effect of the vaporization cap 10 simultaneously heats the fuel in the oil-absorbing porous medium 4 to assist in its vaporization. When the air-fuel mixture burns in the combustion chamber, secondary air is supplied through the secondary air intake to ensure complete combustion of the fuel, reduce carbon buildup, lower pollutant emissions, and thus improve combustion efficiency. The flame concentrator 9 focuses the flame and guides it upwards, improving heat utilization. A temperature sensor monitors the internal temperature of the combustion chamber in real time and automatically shuts off the combustion pump when it detects unignited or incompletely burned fuel, ensuring safe operation.

Claims

1. A methanol vaporization combustion stove, comprising a stove shell (8) and a base plate (1) forming a sealed space, wherein a burner (12) is placed inside the shell (8), a flame-gathering hood (9) is provided at the upper end of the burner (12), and the burner (12) is fixed inside the shell (8) by a chassis (14), wherein: On the chassis (14), an oil felt (4), an internal oil pipe (6), and a vaporization pipe support (5) are installed respectively. The internal oil pipe (6) is wrapped with a layer of metal fiber felt (13). A vaporization pipe (11) is installed on the vaporization pipe support (5). A vaporization cap (10) is welded to the upper end of the vaporization pipe (11). An external oil pipe (3) is connected to the outside of the chassis (14) and extends out of the oil pipe hole on the shell (8). The combustion chamber cover (2) seals the burner (12) inside the shell (8) to form a sealed combustion chamber area. The fan (7) is connected to the air inlet of the shell (8).

2. The methanol vaporization combustion stove according to claim 1, characterized in that, The porosity of the oil-absorbing porous medium (4) installed on the chassis (14) is 0.6 to 0.

85. The oil-absorbing porous medium (4) is porous foam or porous fiber felt stainless steel. When the oil-absorbing porous medium is porous foam stainless steel, the average pore size is 0.18 to 0.42 mm. When the oil-absorbing porous medium is porous fiber felt stainless steel, the average wire diameter is 25 to 40 μm.

3. A methanol vaporization combustion stove according to claim 1, characterized in that, The diameter of the fuel vaporization pipe (5) is 16-20 mm, the diameter of the internal oil pipe (6) is 8-10 mm, and several steam fuel outlet holes are evenly opened on the side wall of the fuel vaporization pipe (5) in the circumferential direction. The diameter of the steam fuel outlet holes is 2-6 mm, and the distance between the end of the internal oil pipe (6) and the end of the fuel vaporization pipe (5) is 10-20 mm.

4. A methanol vaporization combustion stove according to claim 1, characterized in that, The vaporization cap (10) has an inner diameter of 25-30 mm, an outer diameter of 50-70 mm, and a height of 10 mm. The vaporization cap (10) is welded together with the fuel vaporization pipe (5), which is made of high-temperature resistant stainless steel.

5. A methanol vaporization combustion stove according to claim 1, characterized in that, The burner (12) has several rows of air inlets distributed circumferentially on its sidewall. The air inlets are divided into primary air inlets and secondary air inlets. The primary air inlets are in three rows at the bottom. The number of air inlets in the first row is 11 to 15. The first row of air inlets is inclined and the air inlet angle of the first row of air inlets forms an angle of 30° to 45° with the sidewall of the burner (12). The diameter of each air inlet is 2 to 3 mm. The total area of ​​the air inlets accounts for 0.1 to 1% of the surface area of ​​the sidewall of the burner (12). The second and third rows of air inlets are staggered and have 18 to 22 holes. The secondary air inlets are located at the front end of the burner (12) and are divided into two rows with 25 to 30 holes in each row. The diameter of the holes is 3 mm. The ratio of the hole area of ​​the primary air inlet to that of the secondary air inlet is 1:

5.

6. A methanol vaporization combustion stove according to claim 1, characterized in that, The height of the fire-gathering cover (9) is 10-20 mm, the lower diameter is 80 mm, the upper diameter is 30-40 mm, and the tilt angle of the fire-gathering cover (9) is 30°-50°.

7. A methanol vaporization combustion stove according to claim 1, characterized in that, It also includes a temperature sensor that passes through the cooktop housing (8) and the burner (12). The temperature sensor is located inside the burner (12) and placed under the vaporization cap (10) to sense the temperature inside the combustion chamber in real time.

8. A methanol vaporization combustion stove according to claim 1, characterized in that, The combustion fan (7) is fixed on the inner wall of the stove housing (8). Part of the air supplied by the combustion fan (7) enters the burner (12) through the air inlet and mixes with the fuel vapor. The other part of the air directly enters the secondary air inlet to provide secondary air for the combustion of the mixture.

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