CN1019918C

CN1019918C - Burner with secondary vaporization of liquid fuel

Info

Publication number: CN1019918C
Application number: CN 91106743
Authority: CN
Inventors: 伍尚魁
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-07-04
Filing date: 1991-07-04
Publication date: 1993-02-17
Anticipated expiration: 2006-07-04
Also published as: CN1057100A

Abstract

The present invention relates to a highly efficient secondary vaporization burner of liquid fuel, which overcomes the defects of incomplete vaporization or complicated devices of liquid fuel, high price or influence of a preheating pipe on the fire power of main flames, etc. existing in the prior art. The present invention uses a two-time continuous vaporization mode for the complete vaporization of liquid fuel, and meanwhile, combustible gas is used for heating two vaporizing devices which are communicated with each other, wherein a small amount of the combustible gas is already vaporized completely. The present invention has the characteristics of simple structure, favorable vaporizing effects, stable burning flames, high thermal efficiency, etc., and the present invention can be easily popularized and used in a large quantity. The present invention is suitable for various burners of liquid fuel to use, wherein the burners of liquid fuel can burn oil type liquid fuel, alcohol type liquid fuel and hydrocarbon synthesis liquid fuel.

Description

Burner with secondary vaporization of liquid fuel

The present invention relates to a kind of secondary vaporizing formula burner that is applicable to various liquid fuels.

At present, the liquid-fuel burner of the domestic use of China all is an evaporation type, for burning simultaneously, solution liquid vapour adopt liquid vapour isolating construction mode of heating to have nothing in common with each other, the employing generating tube that has is contained in the burner bottom, make 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 85108197 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 88104490.3 disclosed " the improvement structures of vaporization of separate type kerosene and burner ".This device has resistance preheat and tempering preheating structure, complex structure, the cost height, the preheating vaporization effect is relatively poor, can produce a part of fluid and gather outflow, waste fuel, and because of tempering preheating meeting makes whole burner body heating, have a large amount of heats and be dissipated in the stove surrounding space, waste energy, and again operating environment temperature is improved, can make the operator very uncomfortable sweltering hot weather use in summer.

The purpose of this invention is to provide that a kind of liquid fuel evaporation is effective, the thermal efficiency is high, simple in structure, easy to use, burner with high efficiency reliably.

Task of the present invention is achieved in that this burner with secondary vaporization of liquid fuel, and it is made of burner body, the burner lid that has fire output hole, feed tube, vaporization core, vaporization coil pipe and control valve.The double vaporization of liquid fuel is undertaken by two liquid fuel vaporization devices that are connected, once Qi Hua vaporization core (3) is one the airtight cylindrical shell of internal cavity to be arranged, the same feed tube of one end (6) communicates, the other end communicates with the vaporization coil pipe (5) of secondary vaporizing, the vaporization same steam transmitting pipe of coil pipe (5) other end (7) communicates, vaporization core (3) and vaporization coil pipe (5) all be contained in the blowing air cavity of inboard outside of burner body (1) and the cover plate (2) that burns below, the medial surface of burner body (1) has vaporization fire hole (10) in vaporization coil pipe (5) outside vaporization core (3) to be installed, and at the inboard center of vaporization coil pipe (5) vaporization core (3) is installed.All ratio vapourization coil pipe (5) endoporus cross-sectional area is big for the endoporus cross-sectional area of the long-pending and feed tube (6) of vaporization core (3) cavity cross section.Single vaporization fire hole (10) is 1.5～2.5 with the ratio of the cross-sectional area of single fire output hole (11).

This burner structure is simple, cost is low, liquid fuel is vaporized continuously through twice, and vaporization effect is good, and combusting firepower is strong, and fuel combustion is abundant, and combustion flame is stable, thermal efficiency height, and CO content in smoke is low, and is easy to use, reliable, is easy to large-scale popularization and uses.

The vaporization core is installed in vaporization coil pipe outside schematic diagram among Fig. 1 the present invention

The vaporization core is installed in the inboard center of vaporization coil pipe schematic diagram among Fig. 2 the present invention

Below in conjunction with accompanying drawing the present invention is described in further detail: the embodiment effect of Fig. 1 and Fig. 2 is identical, the principle unanimity.The vaporization core (3) of Fig. 1 is one the annular cylindrical shell of cavity to be arranged, it encases vaporization coil pipe (5), the vaporization core (3) of Fig. 2 is that central authorities are tubular, is vaporized coil pipe (5) and encases, and control valve (12) has air flap (9) in order to adjust the air capacity that the boil-off gas jet is brought into.

The operation principle of this burner is: give hydrothermal solution dish (4) with what gobbet fuel injected the burner bottom, igniting back fuel combustion is caught fire, vaporization core (3) in the combustion flame burner for heating and vaporization coil pipe (5), after liquid fuel is sent into the vaporization core (3) that has heated by feed tube (6), the vaporization core (3) that liquid fuel the is run into high temperature i.e. vaporization of standing like a wall, core (3) cross sectional dimensions is bigger owing to considered to vaporize in the design, making for the first time, the air-flow of boil-off gas can fully sharply flow, become the eddy flow shape to flow, Qi Hua liquid does not then become particle mist pearl, be vaporized air-flow and take away, be the preparatory condition of vaporizing for the second time.For reducing the buffer brake that the vaporization air-flow enters oil tank liquid, the cross section of the core (3) of specially will vaporizing and oil-in cross section increase (being appendix (7)).Liquid fuel in vaporization core (3) constantly runs into vaporization core (3) wall of heating and vaporizes in a large number, pressure constantly increases, the boil-off gas that is mixed with liquid particles, mist pearl is sent constantly in the vaporization coil pipe (5), because vaporization coil pipe (5) heats, be mixed in liquid particles, mist pearl in the boil-off gas and run into vaporization immediately behind the tube wall.And temperature continued to raise after boil-off gas was run into tube wall, made further vaporization fully of liquid fuel.In vaporization coil pipe (5), constantly increase with the raising pressure of temperature with the vaporization degree, this moment opening controlling valve (12), boil-off gas is ejected at a high speed in the cavity of burner body (1) with nozzle (8) aperture by appendix (7) and control valve (12), even have the liquid particle of not vaporizing fully, the vaporization immediately owing to the decline of external pressure.The fuel gas of having vaporized fully mixes with the air that jet is brought into, from fire output hole (11) ejection of burner lid (2), and is preheated fire and lights, and under the aerial comburant oxygen, carries out normal combustion.Because of vaporization fire hole (10) being arranged at burner body (1) medial surface, so some boil-off gas is from vaporization fire hole (10) ejection simultaneously, being preheated fire lights, this strand flame then continues heating vaporization core (3) and vaporization coil pipe (5), make behind pre-showing tremendous enthusiasm extinguishing, the secondary vaporizing of liquid fuel can continue to carry out, and guarantees that the fuel gas that continuous, stable supply is vaporized fully supplies burning usefulness, and the flame that causes fire output hole (11) is continuously with stable.This strand continues the flame of heating vaporization core (3) and vaporization coil pipe (5), because the bottom air upwards replenishes, combustion flame is to upper punch, and a part that forms the main flame of burning is heated use, the heat utilization ratio height.Because liquid fuel, has guaranteed vaporization through secondary vaporizing fully, be easy to burning fully, combustion efficiency is good, thermal efficiency height.

This burner be suitable for burning various liquid-fuel burners of oils, alcohols, hydro carbons synthetic liquid fuel use.

Claims

1, a kind of liquid fuel secondary vaporizing burner, it has burner body, feed tube, vaporization liquid pipe and vaporization fire hole, it is characterized in that the double vaporization of liquid fuel undertaken by two liquid fuel vaporization devices that are connected, once Qi Hua vaporization core (3) is one the airtight cylindrical shell of internal cavity to be arranged, the same feed tube of one end (6) communicates, the other end communicates with the vaporization coil pipe (5) of secondary vaporizing, the same steam transmitting pipe of the other end (7) of vaporization coil pipe (5) communicates, vaporization core (3) and vaporization coil pipe (5) all be contained in the blowing air cavity of inboard outside of burner body (1) and the cover plate (2) that burns below, the medial surface of burner body (1) has vaporization fire hole (10).

2, burner according to claim 1, coil pipe (5) outside that it is characterized in that vaporizing is equipped with vaporization core (3).

3, burner according to claim 1, the inboard center of coil pipe (5) that it is characterized in that vaporizing are equipped with vaporization core (3).

4, burner according to claim 1, all ratio vapourization coil pipe (5) endoporus cross-sectional area is big for the endoporus cross-sectional area of the long-pending and feed tube (6) of core (3) cavity cross section that it is characterized in that vaporizing.

5, burner according to claim 1 is characterized in that single vaporization fire hole (10) is 1.5～2.5 with the ratio of the cross-sectional area of single fire output hole (11).