Methanol stove gasification furnace end

Abstract

The utility model discloses a gasification furnace end of a methanol stove, and belongs to the technical field of methanol stoves. The furnace end comprises a controller, an electric heater, a furnace body assembly and a combustion system, the electric heater adopts a split aluminum ring and fire gathering ring design, an annular electrical bar and an annular gasification pipe are embedded in the aluminum ring, and rapid preheating is achieved through the controller; the fire gathering ring and the aluminum ring are movably connected through the supporting legs and keep a distance of 8-12mm, so that high-temperature carbonization is avoided; the combustion system is connected with a gasification pipe and a nozzle through a U-shaped pipe, and carbon particle deposition is reduced. According to the utility model, the temperature of the aluminum ring is monitored in real time through the temperature sensor, the power of the electrical bar is dynamically adjusted, and the stainless steel sleeve anti-corrosion design is combined, so that the problems of slow preheating, nozzle blockage and high maintenance cost of the traditional equipment are solved, quick start in 30 seconds is realized, the maintenance period is prolonged to more than 200 hours, and the energy efficiency and the use convenience are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to methanol stove technical field, concretely relates to a methanol stove gasification stove head with quick preheating and carbon blocking prevention function. BACKGROUND

[0002] Methanol as clean energy is increasingly widely used in the field of cooking equipment. The traditional methanol stove gasification stove head usually adopts metal casting as a gasification device, and its working principle is that liquid methanol enters the annular gasification channel by gravity or pump pressure, and the metal casting is heated by using the waste heat generated by combustion, so that the methanol is gasified into gaseous fuel when flowing through the channel, and then is sprayed out for combustion through a nozzle. Although this structure achieves a certain degree of energy-saving effect, it exposes the following technical defects in actual application: (1) preheating start problem: in the initial ignition stage, the temperature of the metal casting is lower than the critical temperature of methanol gasification (about 120 DEG C), and the liquid methanol cannot be fully gasified, which causes delayed ignition (the average start-up time is 2-3 minutes) and incomplete combustion, resulting in black smoke and CO emission exceeding the standard. (2) High temperature carbonization problem: when continuously burning, the temperature of the gasification chamber is easy to exceed 300 DEG C (the highest measured value can reach 350 DEG C), which causes the methanol to decompose into carbon particles (CH3OH→C+2H2O). These carbon particles deposit at the nozzle, causing the gas hole to be blocked (laboratory tests show that the flow rate of the nozzle decreases by 25% after 4 hours of continuous use), and in severe cases, it may cause backfire safety hazards. (3) High maintenance cost: the existing anti-blocking design mainly relies on regular manual disassembly and cleaning (it is recommended to maintain once every 50 hours), and for high-frequency use scenarios in catering places, the maintenance cost accounts for more than 32% of the total life cycle cost of the equipment. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at solving the problems of slow preheating start, carbon particle blocking and high maintenance cost in the prior art, and provides a methanol stove gasification stove head with short start-up preheating time, excellent carbon blocking prevention performance and convenient maintenance.

[0004] The utility model adopts the technical scheme of a methanol stove gasification stove head, which comprises a controller, an electric heater, a stove body assembly and a combustion system, and is characterized by:

[0005] The electric heater comprises a cylindrical aluminum ring made of metal aluminum, an annular electric heating rod and an annular gasification pipe embedded in the aluminum ring; two wire ends of the annular electric heating rod are led out from the lower end of the aluminum ring and connected with a power supply through a relay controlled by the controller; the liquid inlet and gas outlet of the annular gasification pipe are led out from the lower end of the aluminum ring, and the liquid inlet is connected with a methanol supply pipe through a methanol pump controlled by the controller; the lower end surface of the aluminum ring is provided with a temperature sensing blind hole extending into the interior, and a temperature sensor electrically connected with the controller is installed;

[0006] Furnace body assembly: including a cylindrical fire collecting ring made of refractory material, the center of which forms a cylindrical combustion chamber, an aluminum ring is movably connected with the fire collecting ring through three supports, maintaining a spacing of 8-12mm; the lower end face of the aluminum ring is provided with a furnace bottom plate, the furnace bottom plate is provided with a nozzle mounting hole, a plurality of combustion air holes around the nozzle mounting hole and an ignition needle mounting hole;

[0007] Combustion system: including a spray head mounted on the nozzle mounting hole, the gas outlet end of which extends into the lower part of the combustion chamber, and the gas outlet of the annular gasification pipe is connected with the gas inlet end of the spray head through a U-shaped pipe; an ignition needle mounted on the ignition needle mounting hole, the upper end of which extends into the lower part of the combustion chamber.

[0008] Preferred scheme:

[0009] 1. The outer diameter of the aluminum ring is 160mm, the inner diameter is 88mm, and the height is 35mm; the outer diameter of the fire collecting ring is 160mm, the inner diameter is 88mm, and the height is 55mm.

[0010] 2. The inner wall of the aluminum ring and the fire collecting ring is embedded with a 1mm thick stainless steel sleeve.

[0011] 3. The supports are arranged at the lower end of the fire collecting ring, and the recesses are correspondingly arranged at the upper end of the aluminum ring; or the supports are arranged at the upper end of the aluminum ring, and the recesses are correspondingly arranged at the lower end of the fire collecting ring; the supports are cylindrical structures uniformly distributed along the circumference, with a diameter of 24mm and a height of 20mm; the recesses have a diameter of 25mm and a depth of 10mm.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] (1) Fast start: the aluminum ring and the fire collecting ring are designed in a split body, the aluminum ring is small in size, and the electric heating system can realize fast preheating to above 120℃ within 30 seconds, solving the problem of delayed start of traditional equipment.

[0014] (2) Carbon blockage prevention optimization: the fire collecting ring does not directly heat the aluminum ring, avoiding the temperature of the gasification chamber exceeding 300℃ and reducing the generation of carbon particles; the maintenance cycle is extended to more than 200 hours.

[0015] (3) Energy saving and temperature control: the electric heating rod and the fire collecting ring cooperate in radiation heat, reducing energy consumption; the temperature sensor feeds back in real time, and the controller dynamically adjusts the heating power.

[0016] (4) Modular design: the supports and the recesses cooperate to realize fast disassembly and assembly, and the maintenance convenience is improved by 60%. DRAWINGS

[0017] Figure 1 is a schematic diagram of the utility model from the upper side view angle.

[0018] Figure 2 is a schematic diagram of the utility model from the lower side view angle.

[0019] Figure 3 is a three-dimensional structural diagram of the disassembled state of this utility model.

[0020] Figure 4 is a three-dimensional structural diagram of the electric heater and combustion system of this utility model.

[0021] In the diagram: 1. Aluminum ring; 2. Heating rod; 3. Vaporization pipe; 4. Terminal; 5. Liquid inlet; 6. Gas outlet; 7. Temperature sensing blind hole; 8. Temperature sensor; 9. Furnace bottom plate; 10. Nozzle mounting hole; 11. Combustion air hole; 12. Ignition needle mounting hole; 13. Flame concentrator; 14. Combustion chamber; 15. Support leg; 16. Nozzle; 17. U-shaped tube; 18. Ignition needle; 19. Stainless steel sleeve; 20. Recess. Detailed Implementation

[0022] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0023] like Figures 1 to 4 As shown, a methanol stove gasification burner head includes a controller, an electric heater, a furnace body assembly, and a combustion system.

[0024] The electric heater includes a cylindrical aluminum ring 1 cast from aluminum, with an outer diameter of 160 mm, an inner diameter of 88 mm, and a height of 35 mm. A 1 mm thick stainless steel sleeve 19 is nested inside the inner wall of the aluminum ring 1. An annular electric heating rod 2 and an annular vaporization tube 3 are embedded inside the aluminum ring 1. The two terminals 4 of the annular electric heating rod 2 are led out from the lower end of the aluminum ring 1 and connected to the power supply through a relay controlled by the controller. The liquid inlet 5 and the gas outlet 6 of the annular vaporization tube 3 are led out from the lower end of the aluminum ring 1. The liquid inlet 5 is connected to the methanol supply pipe through a methanol pump controlled by the controller. The lower end face of the aluminum ring 1 is provided with a temperature sensing blind hole 7 extending into the interior, on which a temperature sensor 8 electrically connected to the controller is installed. A furnace bottom plate 9 is provided on the lower end face of the aluminum ring 1. The furnace bottom plate 9 is provided with a nozzle mounting hole 10, six combustion air holes 11 surrounding the nozzle mounting hole 10, and an ignition needle mounting hole 12.

[0025] The furnace body assembly comprises a cylindrical fire collecting ring 13 made of refractory material, the fire collecting ring 13 has an outer diameter of 160 mm, an inner diameter of 88 mm and a height of 55 mm, and a 1 mm thick stainless steel sleeve 19 is embedded in the inner wall of the fire collecting ring 13; a cylindrical combustion chamber 14 is formed in the center of the fire collecting ring 13, three cylindrical structure supporting legs 15 are uniformly distributed along the circumference of the aluminum ring 1, the supporting legs 15 have a diameter of 24 mm and a height of 20 mm, three corresponding recesses 20 are uniformly distributed along the circumference of the upper end of the aluminum ring 1, the recesses 20 have a diameter of 25 mm and a depth of 10 mm; the fire collecting ring 13 is arranged on the aluminum ring 1, and the distance between the lower end surface of the fire collecting ring 13 and the upper end surface of the aluminum ring 1 is 10 mm.

[0026] The combustion system comprises a spray head 16 mounted on the nozzle mounting hole 10, the gas outlet end of the spray head 16 extends into the lower part of the combustion chamber 14, and the gas outlet 6 of the annular gasification pipe 3 is connected with the gas inlet end of the spray head 16 through a U-shaped pipe 17; and an ignition needle 18 mounted on the ignition needle mounting hole 12, the upper end of the ignition needle 18 extends into the lower part of the combustion chamber 14.

[0027] The working process of the gasification furnace head is as follows:

[0028] (1) Starting stage: the controller starts the electric heating rod 2, the aluminum ring 1 is rapidly heated to above 120℃, and then the methanol pump is started;

[0029] (2) Gasification stage: the liquid methanol is gasified into gaseous fuel through the annular gasification pipe 3;

[0030] (3) Combustion stage: the gaseous fuel is sprayed out through the spray head 16, mixed with the air entering through the combustion air hole 11, and ignited by the ignition needle 18;

[0031] (4) Temperature control stage: the temperature sensor 8 monitors the temperature in real time, and the controller dynamically adjusts the power of the electric heating rod 2;

[0032] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application.

Claims

1. A methanol stove gasifier head, comprising a controller, an electric heater, a furnace body assembly and a combustion system, characterized in that: the electric heater comprises a cylindrical aluminum ring casted by metal aluminum, an annular electric heating rod (2) and an annular gasification pipe (3) are embedded in the aluminum ring (1); two wire ends (4) of the annular electric heating rod (2) are led out from the lower end of the aluminum ring (1) and connected with a power supply through a relay controlled by the controller; a liquid inlet (5) and a gas outlet (6) of the annular gasification pipe (3) are led out from the lower end of the aluminum ring (1), the liquid inlet (5) is connected with a methanol supply pipe through a methanol pump controlled by the controller; a temperature sensing blind hole (7) extending into the inside is arranged on the lower end surface of the aluminum ring (1), and a temperature sensor (8) electrically connected with the controller is installed; a furnace bottom plate (9) is arranged on the lower end surface of the aluminum ring (1), the furnace bottom plate (9) is provided with a nozzle mounting hole (10), a plurality of combustion air holes (11) surrounding the nozzle mounting hole (10) and an ignition needle mounting hole (12); the furnace body assembly comprises a cylindrical fire gathering ring made of refractory material, a cylindrical combustion chamber (14) is formed in the center of the fire gathering ring (13), the aluminum ring (1) is movably connected with the fire gathering ring (13) through three supporting legs (15) with a spacing of 8-12mm; the combustion system comprises a spray head (16) mounted on the nozzle mounting hole (10), the gas outlet end of the spray head (16) extends into the lower part of the combustion chamber (14), the gas outlet (6) of the annular gasification pipe (3) is connected with the gas inlet end of the spray head (16) through a U-shaped pipe (17); an ignition needle (18) mounted on the ignition needle mounting hole (12), the upper end of the ignition needle (18) extends into the lower part of the combustion chamber (14).

2. The methane gasifier head according to claim 1, characterized in that: The outer diameter of the aluminum ring (1) is 160mm, the inner diameter is 88mm, and the height is 35mm; the outer diameter of the fire gathering ring (13) is 160mm, the inner diameter is 88mm, and the height is 55mm.

3. A methanol gasifier head according to claim 1 or 2, characterised in that: The inner walls of the aluminum ring (1) and the fire gathering ring (13) are embedded with 1mm thick stainless steel sleeves (19).

4. The methane gasifier head according to claim 3, characterized in that: The supporting legs (15) are arranged at the lower end of the fire gathering ring (13), and the concave pits (20) are correspondingly arranged at the upper end of the aluminum ring (1); or the supporting legs (15) are arranged at the upper end of the aluminum ring (1), and the concave pits (20) are correspondingly arranged at the lower end of the fire gathering ring (13); the supporting legs (15) are cylindrical structures uniformly distributed along the circumference, with a diameter of 24mm and a height of 20mm; the concave pits (20) have a diameter of 25mm and a depth of 10mm.

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