WO2003083366A1

WO2003083366A1 - Fog type burner

Info

Publication number: WO2003083366A1
Application number: PCT/KR2003/000650
Authority: WO
Inventors: Hyun-Bae Jung; Sang-Kyoo Lee
Original assignee: Hyun-Bae Jung; Sang-Kyoo Lee
Priority date: 2002-04-01
Filing date: 2003-04-01
Publication date: 2003-10-09
Also published as: AU2003225357A1; KR200280231Y1

Abstract

The present invention relates to a vaporized oil burner for spraying a fuel in aerosol phase on the injection of the fuel in order to ensure a fine mixture of air and fuel. The present invention is capable of overcoming the problem of blocking of the fuel outlet by injecting a fuel in foggy phase, maximizing a combustion efficiency of the fuel by supplying the mixture of the fuel and the air preheated, and maximizing a thermal efficiency by fine mixing the fuel and the air by ejecting the air in a screw shape.

Description

FOG TYPE BURNER

TECHNICAL FIELD

The present invention relates to a vaporized oil burner, and more

particularly, to a vaporized oil burner for spraying a fuel in aerosol

phase on the injection of the fuel in order to ensure a fine mixture of air

and fuel, thereby maximizing a combustion property and a thermal

efficiency.

BACKGROUND ART

Conventionally, combustion types of oil burner are classified into

a rotary atomized type, a hydraulic atomized type, and a vaporized type. The vaporized type oil burner is provided with a preheater, installed within the burner, heated for several seconds by the electric charge, a thermal sensor for detecting the appropriate vaporization temperature to send a detected signal to a control means, and fuel and air pumps operated depending upon the control signal from the control means.

Korean Utility Model Gazette No. 137680 discloses a rotary atomized burner capable of cleaning second combustion air supplied to a flame and coincidently converting the second combustion air into an even airflow.

Korean Patent Laid-open No. 1996-0002750 discloses a vaporized burner for auxiliary heating device of an automotive vehicle, and Korean Patent Gazette No. 224013 discloses a rotary atomized

burner which facilitate mixing of air and fuel vaporized from a diffuser

to a vaporizer, and discharge the mixed gas to a burner head by means

of the rotary motion of the conversion motor.

Korean Utility Model Laid-open No. 1995-0002888 discloses a

vaporized oil burner that a operating bar of a preheater is inserted into

an outer surface of a fuel supply tube in an articulated fashion to

prevent the extracted bar from inhibiting an behavior of the operator,

and is capable of opening or closing an air inlet below a vapor supply

tube of the burner to facilitate an ignition of the burner.

However, the prior arts described hereinabove is provided with an

injection nozzle for spraying a fuel, which have a small diameter outlet resulting in a high pressure of the fuel pump, an increased fuel supply

and air consumption. Thus, the use of the prior arts has several

disadvantages such as overheat of the fuel supply tube resulted in agglomeration of impurities of the fuel, inhibition of the fuel injection due to the blocking of the fuel outlet by the agglomeration, and imperfect combustion resulted from the uneven mixing with the air.

DISCLOSURE OF INVENTION

To solve the problem, it is an object of the present invention to provide a vaporized oil burner is capable of enabling a complete combustion, increasing a thermal efficiency, and decreasing a fuel consumption by means of maximizing an air contact surface area of the

fuel discharged from nozzle, wherein the fuel is heated up to a high

temperature and pressure prior to discharging through the nozzle to

swiftly expanded into a relatively low pressure ambient air.

It is another object of the present invention to provide a

vaporized oil burner is capable of raising a combustion efficiency by

virtue of mixing fuel and air after the combustion air is preheated with a

fever of the fuel preheater.

A core technology of the present invention is to discharge a fuel in

foggy phase by heating the fuel up to a high temperature and pressure

prior to discharging through the nozzle to swiftly expanded in a

relatively low pressure ambient air, and to maximize a combustion

efficiency and a thermal efficiency by mixing fuel and air after the combustion air is preheated with a fever of the fuel preheater.

BRIEF DESCRIPTION OF THE DRAWINGS

These and other features, aspects, and advantages of preferred embodiments of the present invention will be more fully described in the following detailed description, taken accompanying drawings. In the

drawings:

Fig. 1 shows a partial cross-sectional plan view of a vaporized oil

burner in accordance of the present invention;

Fig. 2 is a longitudinal cross- sectional view of the vaporized oil burner in accordance of the present invention;

Fig. 3 is a perspective view of a fuel supply tube of the vaporized

oil burner in accordance of the present invention; and

Fig. 4 shows a front view of the vaporized oil burner in

accordance with the present invention.

BEST MODES FOR CARRYING OUT THE INVENTION

Hereinafter, the details of a vaporized oil burner in accordance

with the present invention will be described in connection with the

accompanying drawings.

Referring to Figs 1 to 4, Fig. 1 shows a partial cross-sectional

plan view of a vaporized oil burner in accordance of the present invention; Fig. 2 is a longitudinal cross-sectional view of the vaporized oil burner in accordance of the present invention; Fig. 3 is a perspective view of a fuel supply tube of the vaporized oil burner in accordance of the present invention; and Fig. 4 shows a front view of the vaporized oil burner in accordance with the present invention. The vaporized oil burner comprises a housing 10, a nozzle 20, a preheater 30 for preheating fuel and air, a fuel pump 40, an air compressor 50 for generating the compressed air, and an ignitor 60.

As shown in Fig. 1 , the housing 10 is provided with a

bell-mouthed emission plate 11 having a number of air discharging port 12 and an air chamber 10a in which the air is supplied by the air compressor 50. The air discharging port 12 is preferably arranged on

the emission plate 1 1 in a diagonal direction to discharge the air in a

screw shape, or in an eddy current.

The reason for the diagonal arrange is that the fuel injected from

the nozzle 20 and the air discharged from the air discharging port 12

are intensely mixed, a flame goes straight, and it facilitates a complete combustion and an increment of a thermal efficiency.

The nozzle 20 is detachably engaged with a thread of the housing

10, and provided with a nozzle tip 22 connected in fluid communication

with the emission plate 1 1. A fuel discharging port 21 for discharging

the fuel against the emission plate 11 is formed at one end portion of the nozzle tip 22. The nozzle tip 22, if necessary, can be exchanged since it is threadedly engaged with the nozzle 20.

The preheater 30 preheats the fuel, which is supplied from the fuel pump 40 through a fuel supply tube 41 into the nozzle 20, up to the high temperature and pressure. Then, the fuel is ignited by a spark of the ignitor 60 on the discharging of the fuel in foggy phase. The preheater 30 comprises a heat generating tube 31 having an annular shape, and a fuel supply tube 41 wound on the heat generating tube 31 in a coil shape, wherein the fuel supply tube is located in the air chamber 10a.

The preheater 30 preheats not only the fuel but also the air supplied into the air chamber 10a by the compressor 50. The fuel supply tube 41 has one end connected to the nozzle 20 and the other

end connected to the fuel pump 40.

The fuel pump 40 is preferably a low pressure pump for

supplying the fuel in a low pressure to evenly maintain a temperature of

the fuel supply tube 41. The reason for this is that the fuel discharged

in a foggy phase makes the air contact surface area maximize, and

makes a time to pass through a combustion room increase, thereby

elongating a heat exchange time of a peripheral device in the

combustion room and maximizing a thermal efficiency.

The compressor 50 supplies the air into the air chamber 10a, and a thermal sensor 32 detects a temperature of the heat generating

tube 31. The thermal sensor 32 detects the temperature of the heat

generating tube 31 to control its operation, wherein the thermal sensor

32 employs various sensors, preferably such as a bimetal thermal sensor, depending upon the intention of a manufacturer.

When the heat generating tube 31 is overheated, the bimetal thermal sensor 32 is removed from the charged contact to cut off the electric charge, thereby preventing the heat generating tube 31 from overheating. When the temperature of the heat generating tube 31 is lowered than a reference temperature, the bimetal thermal sensor 32 moves back to the contact to energize the heat generating tube 31 , thereby heating the tube 31.

Further, the ignitor 60 is provided with an igniting plug 61 having a tip portion located in the vicinity of the fuel outlet 21. Thus,

when the ignitor 60 is operated, the igniting plug 61 generates a spark

to ignite the fuel injected from the nozzle 20.

Hereinafter, the operation of the vaporized oil burner in

accordance with the present invention will be described in connection

with the accompanying drawings.

When a main power switch (not shown) is operated, the heat

generating tube 31 is heated, and, when the heat generating tube 31 is

sufficiently warmed, the fuel pump 40 is operated to supply the fuel

through the fuel supply tube 41, and the compressor 50 is operated to

supply the air into the air chamber 10a through an air supply tube 51.

The fuel in liquid phase is heated up to the high temperature and

pressure to be converted to a gaseous phase by going through the heat generating tube 31 , and the gaseous fuel is injected from the fuel outlet 21 of the nozzle 20 to be spouted in a foggy phase into a low pressure ambient air.

At this time, the ignitor 60 generates a spark from the igniting plug 61 to burn out the fuel mixed with an air discharged from the air discharging port 12. Since the air discharging port 12 is diagonally

installed, the flame is twisted in a screw shape to be ejected forwardly against the emission plate 1 1 , and the air and the fuel in foggy phase is finely mixed to facilitate a complete combustion if the fuel, thereby maximizing the thermal efficiency of the fuel. In addition, the use of the low pressure pump causes a delay of

the time of passing through the combustion room of the flame. As a

result of the delay, the flame is sufficiently heat exchanged with the

peripheral devices, such as a water supply pipe, to be discharged

through a chimney, thereby improving the thermal efficiency.

INDUSTRIAL APPLICABILITY

As described above, the present invention is capable of

overcoming the problem of blocking of the fuel outlet by injecting a fuel

in foggy phase, maximizing the combustion efficiency of the fuel by

supplying the mixture of the fuel and the air preheated, and maximizing

the thermal efficiency by fine mixing the fuel and the air by ejecting the

air in a screw shape.

Claims

1. A vaporized oil burner comprising:

a housing (10) in which an air is supplied from a compressor (50),

provided with an air discharging port (12) for discharging the supplied

air, a emission plate (1 1) in which the air discharging port is located,

and an air chamber (10a);

a nozzle (20) detachably engaged with the emission plate (1 1) and

provided with a fuel outlet (21) for injecting a fuel;

an ignitor (60) for igniting the fuel by operating a igniting plug

(61) in the vicinity of the fuel outlet (21); and

a heat generating tube (31) located in the housing (10) to preheat the fuel supplied from the fuel pump (40) into the nozzle (20) and the air in the air chamber (10a), wherein a fuel supply tube (41) is wound on the heat generating tube (31) in a coil shape.

2. The vaporized oil burner of claim 1 , wherein the air discharging port (12) is diagonally installed on the emission plate to eject the air in a screw shape.