CN2176501Y - Liquid fuel burner with self pressuring and three stage gasifying - Google Patents

Abstract

The utility model relates to a liquid fuel burner with self pressurization and three-stage gasification. A continuous three-stage gasification device is composed of a spiral gasification pipe, a pressurization sack and an atomizing gas pressure chamber. Air is supplied by a rotating direction wind inlet and a bottom wind inlet holes of a fire cup, and the air is mixed with combustible gas to be burned into flame which rotates upwards. The utility model has the advantages of simple structure, good three-stage gasification effect, stable gasification gas pressure, stable combustion flame, no return fire, high heating efficiency, short preheating time, the capability of automatic pressurization and pressure reduction, no gas leakage, no liquid leakage or clogging, easy popularization and easy application. The utility model is suitable for the use of various liquid fuel burners which combust the synthetic liquid fuel.

Description

Liquid fuel burner with self pressuring and three stage gasifying

The utility model relates to a kind of stove or kitchen range of liquid fuel, particularly a kind of stove or range with automatic pressurizing three-stage evaporation liquid-fuel supply device.

The liquefied gas cooking stove of Shi Yonging can not use synthetic liquid fuel in the market, because liquid fuel is not volatile, thereby cooking stove will solve two technical problem underlying, the first is in order to make liquid fuel completing combustion, reach desirable combustion efficiency, must make the liquid fuel after-combustion of fully vaporizing, it two is in order to allow liquid fuel flow into vaporization combustion in the burner smoothly, must to pressurize to the fuel in the fuel tank.But the liquid fuel cooker of current use mostly is a vaporizing burner.For burning simultaneously, solution liquid vapour adopts the liquid gas separation structure, mode of heating is had nothing in common with each other, and the employing generating tube that has is contained in the burner bottom, makes a part of boil-off gas ejection burning heating generating tube with the burner boring method, the intensity that this will influence main flame descends the thermal efficiency; The horizontal burner top that is contained in of the employing generating tube that has causes main firepower to be split and is to reduce the thermal efficiency by two halves; The employing center annular generating tube that has, vaporization effect is good inadequately, and fuel can not finely burn, and wastes energy; The burner center that has does not have the secondary air inlet hole, thereby CO content in smoke is too high, Chinese patent application numbers 86108197 discloses a kind of vaporizing burner for liquid fuel, it is heated by heating wire, makes fuel oil centrifugal spray, gasification by the motor rotation, delivers to the burner body ignition by air blast again, this type of burner structure complexity, cost an arm and a leg, volume is big, obviously is difficult to promote the use of.Chinese patent application number 91106743.4 disclosed burner with secondary vaporization of liquid fuel technically the past very much progress has been arranged, but still have the pressure for vaporization instability, unstable situation also appears in the flame combustion situation.

It is effective that the purpose of this utility model provides a kind of liquid fuel evaporation, the boil-off gas pressure stability, and combustion flame is stable, high, simple in structure, easy to use, the reliable efficient liquid burning of thermal efficiency cooking stove.

Task of the present utility model realizes with following mode: this liquid fuel cooker, it is by fuel tank, the fire cup, the fire bowl cover, the spiral generating tube, preheating dish and control valve constitute, the spiral gasification tube lower end is communicated with fuel tank through fuel feed pipe, the other end is connected with the pressurization bag of fire cup central upper, top, atomization gas pressure chamber is communicated with the pressurization bag, its underpart is communicated with control valve and boil-off gas jet pipe through the boil-off gas supply pipe, there are two place's narrow slits that it is divided into two buffering vaporizers and air storage chamber between atomization gas pressure indoor wall and the lateral wall, atomization gas pressure chamber is placed in fire cup bottom, the lower wall outdoor at atomization gas pressure has fire jetting hole, the fire cup is tubular, its bottom centre is a through hole, diapire is arranged at the bottom that connects outer wall, diapire at the fire cup has the bottom air inlet hole, and the rotation direction fresh air inlet that becomes the angle of inclination with outer wall is arranged at the outer wall bottom of fire cup.Automatically forcing pipe one end is communicated with the pressurization bag, the top of the other end mouth of pipe in fuel tank, and boil-off gas jet pipe one end inserts in the through hole of fire cup outer wall bottom.The rotation direction fresh air inlet has 3 to 40.The bottom air inlet hole has 3 to 20.Fire jetting hole has 3--16.

This liquid fuel cooker has simple in structure, and three grades of vaporization effects are good, the boil-off gas pressure stability, and combustion flame is stable, not tempering, thermal efficiency height, preheating time are short, supercharging automatically, decompression, and no leakage is stopped up, and is easy to the large-scale popularization application.It is suitable for burning various liquid fuel cooker of synthetic liquid fuels such as oils, alcohols, hydro carbons uses.

This liquid fuel cooker of Fig. 1 front view and A-A cutaway view

This liquid fuel cooker of Fig. 2 vertical view and B-B cutaway view

Below in conjunction with accompanying drawing this liquid fuel cooker is described further: the fire cup 1 of this burner is tubular, its bottom centre is a through hole, diapire is arranged at the bottom that connects outer wall, at fiery glass 1 diapire bottom air inlet hole 19 is arranged, and the outer wall bottom becomes the rotation direction fresh air inlet 16 at angle of inclination with outer wall.The fiery bowl cover 3 of band spray combustion gas fire hole is contained in above the fire cup 1.Atomization gas pressure chamber 2 is placed in fire cup 1 bottom, and 2 tops, atomization gas pressure chamber are communicated with pressurization bag 4, and the bottom is communicated with control valve 12 and boil-off gas jet pipe 9 through boil-off gas supply pipe 11.Boil-off gas jet pipe 9 one ends insert in the passage of fire cup 1 outer wall bottom.Have two place's narrow slits that it is divided into two buffering vaporizers and air storage chamber between the madial wall of atomization gas pressure chamber 2 and the lateral wall, the lower wall outside atomization gas pressure chamber 2 has fire jetting hole 15.Spiral generating tube 5 is placed in the place, cavity, center of fire cup 1 and atomization gas pressure chamber 2, and its two ends are communicated with pressurization bag 4 respectively and are connected fuel tank 6 through fuel feed pipe 8.Automatically forcing pipe 7 one ends are communicated with pressurization bag 4, and the other end mouth of pipe is on the top of fuel tank.Preheating dish 14 is contained in below the fire cup 1, and pre-heating fuel pipe 13 1 ends promote that in the preheating dish 14, the other end is communicated with control valve 12.Fuel tank 6 as bigger can be divided into two fuel tanks, and purpose is to be convenient to automatic pressurization, communicates for making two fuel tanks, and dual fuel tank feed pipe 17 and dual fuel tank pressure-equalizing pipe 18 are arranged between two fuel tanks 6.Control valve 12 is equipped with the contactless ignition 10 of automatic igniting.Present embodiment bottom air inlet hole 19 has three.Fire jetting hole 15 has six.Rotation direction fresh air inlet 16 has six, and the inclination angle of itself and fire cup 1 outer wall is basically at 30 °--between 60 ° of angles.

Combustion process: with the preheating dish 14 of gobbet fuel below pre-heating fuel pipe 13 injects fire cup 1, igniting back fuel combustion is caught fire, and combustion flame adds spiral generating tube 5, pressurization bag 4 and the atomization gas pressure chamber 2 in the showing tremendous enthusiasm cup 1.After liquid fuel is sent into the spiral generating tube 5 that has heated by fuel feed pipe 8, the spiral generating tube 5 that liquid fuel the is run into high temperature i.e. vaporization of standing like a wall, because of spiral generating tube 5 upper ends communicate with pressurization bag 4, air-flow after the vaporization can fully sharply flow for the first time, not Qi Hua liquid particles, mist pearl, be vaporized air-flow and bring pressurization bag 4 into, the liquid particles of not vaporizing at pressurization Bao Neishang, mist pearl be further secondary vaporizing then.With the raising of temperature with the vaporization degree, pressurization bag 4 internal pressures constantly increase, part boil-off gas enters by automatic forcing pipe 7 in the fuel tank 6 of sealing liquid fuel tank is pressurizeed automatically, another part boil-off gas has the liquid fuel particle of not vaporizing fully as yet in pressurization bag 4, the mist pearl enters atomization gas pressure chamber 2, two place's narrow slits are arranged in the atomization gas pressure chamber 2, this chamber is divided into two buffering vaporizers and an air storage chamber, along with the gentle voltage rise height of temperature, buffering gasification is indoor to be contained minute quantity liquid particles and mist pearl and is all vaporized during through two place narrow slits with boil-off gas, and enters air storage chamber.Two buffering vaporizers can arrive vaporization and buffering effect simultaneously.When the liquid fuel particle, mist pearl of vaporization be not through the twice narrow slit fully, can vaporize because of the slotted wall of running into heating on the one hand, on the other hand according to thermodynamics knowledge, when the air-flow that contains the liquid fuel particulate passes through slotted wall fast, because of the decline of ambient pressure is vaporized.With the raising of temperature with the vaporization degree, the air storage chamber internal pressure constantly increases, this moment opening controlling valve 12, boil-off gas sprays at a high speed in the cavity of fire cup 1 by boil-off gas supply pipe 11 and control valve 12 and boil-off gas jet pipe 9 aperture from fire cup 1, the fuel gas of having vaporized fully mixes with the air of being brought into by jet from six rotation direction fresh air inlets 16 and three bottom air inlet holes 19, from the fire jetting hole ejection of fiery bowl cover 3, and is preheated fire and lights, under the aerial comburant oxygen, fully burning.Because of 2 fire jetting hole 15 being arranged with fire cup 1 a bottom connecting portion in atomization gas pressure chamber, so some boil-off gas is from fire jetting hole 15 ejections simultaneously, being preheated fire lights, this strand flame then continues to heat spiral generating tube 5, pressurization bag 4 and atomization gas pressure chamber 2, make behind pre-showing tremendous enthusiasm extinguishing, three vaporizations of liquid fuel can continue to carry out, and guarantee that the fuel gas that continuous, stable supply is vaporized fully uses for burning.Because the gas storage of pressurization bag 4 and atomization gas pressure chamber 2 is arranged, so the fuel gas pressure stability, combustion flame is also stable, because rotation direction fresh air inlet 16 and bottom air inlet hole 19 enter upwards air of rotation, make the combustion flame rotation to upper punch, strengthened the main flame of burning, the Btu utilization height.Owing to adopt multistage vaporization structure, guaranteed vaporization fully, be easy to burning fully, combustion efficiency is good, thermal efficiency height.

Claims (4)

1, a kind of liquid fuel cooker, it is by fuel tank, the fire cup, the fire bowl cover, the spiral generating tube, preheating dish and control valve constitute, it is characterized in that spiral gasification tube [5] lower end is communicated with fuel tank [6] through fuel feed pipe [8], the other end is connected with the pressurization bag [4] of fire cup [1] central upper, top, atomization gas pressure chamber [2] is communicated with pressurization bag [4], its underpart is communicated with control valve [12] and boil-off gas jet pipe [9] through boil-off gas supply pipe [11], there are two place's narrow slits that it is divided into two buffering vaporizers and air storage chamber between atomization gas pressure chamber [2] madial wall and the lateral wall, atomization gas pressure chamber [2] is placed in fire cup [1] bottom, lower wall outside atomization gas pressure chamber [2] has fire jetting hole [15], fire cup [1] is tubular, its bottom centre is a through hole, diapire is arranged at the bottom that connects outer wall, diapire at fire cup [1] has bottom air inlet hole [19], the rotation direction fresh air inlet [16] that becomes the angle of inclination with outer wall is arranged at the outer wall bottom of fire cup [1], automatically forcing pipe [7] one ends are communicated with pressurization bag [4], insert in the through hole of fire cup [1] outer wall bottom on the top of the other end mouth of pipe in fuel tank, boil-off gas jet pipe [9] one ends.

2,, it is characterized in that rotation direction fresh air inlet ［ 16 ］ has 3 to 40 according to the described liquid fuel cooker of claim 1.

3,, it is characterized in that bottom air inlet hole ［ 19 ］ has 3 to 20 according to the described liquid fuel cooker of claim 1.

4, liquid fuel cooker according to claim 1 is characterized in that fire jetting hole ［ 15 ］ has 3--16.

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