CN2095339U

CN2095339U - High-efficient burner by secondary gasification of liquid fuel

Info

Publication number: CN2095339U
Application number: CN 91212946
Authority: CN
Inventors: 伍尚魁
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-07-04
Filing date: 1991-07-04
Publication date: 1992-02-05

Abstract

The utility model relates to a high-efficient combustor by secondary gasification of liquid fuel, which overcomes the defects existing in the prior art that the gasification of liquid fuel is incomplete, devices have complicated structures and high prices, or preheating pipes influence the fire power of the main flame. The utility model adopts a method of two continuous gasifying processes to ensure complete gasification for liquid, and simultaneously, a small quantity of completely gasified combustible gas is combusted to heat two gasifying devices which are communicated with each other. The utility model has the advantages of simple structure, favorable effect of gasification, stable combustion flames, high heat efficiency, and easy popularization and application in large amount and is suitable for various liquid fuel combustors using oils, alcohols, and hydrocarbon synthetic liquid fuel.

Description

High-efficient burner by secondary gasification of liquid fuel

The utility model 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 the CO too high levels in the flue gas, 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.

The purpose of this utility model provides that a kind of liquid fuel evaporation is effective, the thermal efficiency is high, burner with high efficiency simple in structure, easy to use, reliable.

Task of the present utility model 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, the vaporization core of the usefulness of once vaporizing is one the airtight cylindrical shell of internal cavity to be arranged, one end communicates with feed tube, and the other end communicates with the vaporization coil pipe of secondary vaporizing, and the other end of vaporization coil pipe communicates with steam transmitting pipe.Vaporization core and vaporization coil pipe all be contained in the blowing air cavity of inboard outside of burner body and burning cover plate below.The burner body medial surface has the vaporization fire hole.The vaporization coil pipe outside is equipped with the vaporization core, and the vaporization core can be contained in the inboard center of vaporization coil pipe again, and in various embodiments, all ratio vapourization coil pipe endoporus cross-sectional area is big for the endoporus cross-sectional area of the long-pending and feed tube of vaporization core cavity cross section; Single vaporization fire hole is 1.5～2.5 with the ratio of the cross-sectional area of single fire output hole.

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 in Fig. 1 the utility model

The vaporization core is installed in the inboard center of vaporization coil pipe schematic diagram in Fig. 2 the utility model

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, fire output hole (11) ejection from burner lid (2), and be preheated fire and light, under the aerial comburant oxygen, carry 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 burner with secondary vaporization of liquid fuel, it is by burner body, the burner lid that has fire output hole, feed tube and control valve constitute, 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, burner body (1) medial surface 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 (16) 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).