JP2729438B2 - Fuel vaporizer in burner combustion system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel vaporizer in a burner combustion system in which combustion is stabilized very quickly.

[0002]

2. Description of the Related Art In a conventional burner combustion system in which a vaporized gas of fuel and air are premixed and sent to a combustion section for combustion, the fuel is heated and vaporized. Since the method of mixing vaporized gas and air and sending it to the combustion section is adopted, the preheating time is long, the power consumption is large when a power heater is used, and the combustion throttle ratio (T · DR) is difficult to adjust, and it takes about 60 to 120 seconds for the combustion to stabilize.

[0003] Japanese Patent Application Laid-Open No.
As shown in -57119, a heating plate and a heat-resistant porous plate are doubled, fuel is supplied onto the heat-resistant porous plate, the fuel is heated by the heating plate to vaporize the fuel, and air is supplied to the lower surface side of the heating plate. There is proposed a liquid fuel combustion device that performs the following. This heat-resistant porous plate is merely provided to facilitate vaporization of the fuel.

According to the present invention, both the heating element and the heat-resistant porous body are formed in a cylindrical body, and the fuel is vaporized by passing an air flow through the cylindrical body. The inventors of the present invention completed the present invention by performing a number of experiments, focusing on the possibility that if the fuel is made into fine particles and mixed with the air flow, the power consumption will be small, the combustion efficiency will be good, and the combustion will be stabilized more quickly.

[0005]

The gist of the present invention will be described with reference to the accompanying drawings.

A fuel supply mechanism a, an air supply mechanism b, and a heating mechanism c are provided. The fuel supplied from the fuel supply mechanism a is heated and vaporized by the heating mechanism c, and the vaporized fuel and air are heated by the air supply mechanism b. In the burner combustion method in which the preheating is supplied to the combustion section and the mixture is supplied to the combustion section and burned, the heating element of the heating mechanism c is formed in the cylindrical heating element 1, and the cylindrical heating element 1 is attached to the cylindrical heat-resistant porous body 2. The fuel supplied from the fuel supply mechanism a is supplied with a fuel thin film 3 on the porous surface of the tubular heat-resistant porous body 2.
A heating mechanism c to which fuel is supplied so that the fuel gas is formed is provided. When the fuel thin film 3 is heated by the tubular heating element 1 to supply the vaporized gas, the fuel to be vaporized by heating the tubular heating element 1 is provided. Part of the thin film 3 is cylindrically heated by the air supply mechanism b.
Burner combustion characterized in that it is scattered as fine particulate fuel 4 in the air flow by the air flow passing and supplied into the body 1, and the fine particulate fuel 4, vaporized gas and air are premixed and supplied to the combustion unit 5. It relates to a fuel vaporizer in the system.

Further, a fuel supply mechanism a, an air supply mechanism b, and a heating mechanism c are provided, and the fuel supplied from the fuel supply mechanism a is heated by the heating mechanism c to be vaporized.
In a burner combustion system in which the vaporized fuel and air are premixed and supplied to a combustion section for combustion, the heating element of the heating mechanism c is formed in the cylindrical heating element 1 and the cylindrical heating element 1
The upper part of the light core 8 is attached to the tubular heat-resistant porous body 2 so that the fuel thin film 3 is formed on the porous surface of the tubular heat-resistant porous body 2. The wick 8
Is suspended in the fuel tank 9 and the wick 8
When the fuel thin film 3 is heated by the tubular heating element 1 to supply the vaporized gas, a part of the fuel thin film 3 to be vaporized by heating the tubular heating element 1 is provided. The air flow is supplied from the air supply mechanism b into the tubular heating element 1 and scattered into the air flow as the particulate fuel 4. The particulate fuel 4, the vaporized gas and the air are premixed and supplied to the combustion unit 5. The present invention relates to a fuel vaporizer in a burner combustion system.

[0008]

As shown in FIGS. 1, 2 and 3, the heating element of the heating mechanism c is formed on a cylindrical heating element 1, and the cylindrical heating element 1 is provided with a cylindrical heat-resistant porous body. And a heating mechanism c for supplying the fuel supplied from the fuel supply mechanism a so that the fuel thin film 3 is formed on the porous surface of the tubular heat-resistant porous body 2. 3 is heated by the cylindrical heating element 1 to supply the vaporized gas, a part of the fuel thin film 3 to be vaporized by the heating of the cylindrical heating element 1 is partially dispersed by the air flow supplied from the air supply mechanism b. The particulate fuel 4, the vaporized gas and the air are premixed and supplied to the combustion section 5, so that they are formed so as to cover the surface of the cylindrical heat-resistant porous body 2. The heated fuel thin film 3 is heated by the cylindrical heating element 1 and a part thereof becomes a vaporized gas, A part of the fuel thin film 3 to be vaporized by the vaporized vapor pressure and the air flow passing through the cylindrical heat-resistant porous body 2 becomes particulate fuel 4 immediately before vaporization and scatters in the air flow. The premixed gas of the gas and the particulate fuel 4 is supplied to the combustion unit 5. The presence of the particulate fuel 4 shortens the time required for combustion stabilization, and provides a burner combustion type fuel vaporizer that can obtain a combustion state with a large amount of heat even when the starting power is small.

As shown in FIGS. 4, 5, and 6, the heating element of the heating mechanism c is formed on the cylindrical heating element 1, and the cylindrical heating element 1 is provided with a cylindrical heat-resistant porous body. The upper part of the wick 8 is connected to the tubular heat-resistant porous body 2 so that the fuel thin film 3 is formed on the porous surface of the tubular heat-resistant porous body 2. The lower part is suspended in the fuel tank 9 so as to supply fuel to the heating mechanism c via the light core 8. When the fuel thin film 3 is heated by the cylindrical heating element 1 to supply the vaporized gas, the cylindrical heating element is heated. A part of the fuel thin film 3 to be vaporized by the heating of the body 1 is scattered in the air flow as the fine particle fuel 4 by the air flow supplied from the air supply mechanism b, and the fine particle fuel 4, the vaporized gas and the air are reserved. Since the mixture is supplied to the combustion section 5, the surface of the tubular heat-resistant porous body 2 is made to have the same shape as in claim 1. The fuel thin film 3 formed so as to be covered is heated by the cylindrical heating element 1 and a part thereof becomes a vaporized gas, and at the same time, is vaporized by the vaporized vapor pressure and the air flow passing through the cylindrical heat-resistant porous body 2. A part of the fuel thin film 3 becomes particulate fuel 4 immediately before vaporization and scatters in the air flow, and a premixed gas of the air, the vaporized gas and the particulate fuel 4 is supplied to the combustion unit 5. The presence of the particulate fuel 4 shortens the time required for combustion stabilization, and provides a burner combustion type fuel vaporizer that can obtain a combustion state with a large amount of heat even when the starting power is small.

[0010]

FIGS. 1, 2 and 3 show a first embodiment according to the first aspect of the present invention, and FIGS.
14 shows a fourth embodiment.

The first embodiment will be described.

A fuel supply mechanism a, an air supply mechanism b, and a heating mechanism c are provided. The fuel supplied from the fuel supply mechanism a is heated and vaporized by the heating mechanism c, and the vaporized fuel and air are heated by the air supply mechanism b. In the burner combustion method in which the preheating is supplied to the combustion section and the mixture is supplied to the combustion section and burned, the heating element of the heating mechanism c is formed in the cylindrical heating element 1, and the cylindrical heating element 1 is attached to the cylindrical heat-resistant porous body 2. The fuel supplied from the fuel supply mechanism a is supplied with a fuel thin film 3 on the porous surface of the tubular heat-resistant porous body 2.
A heating mechanism c to which fuel is supplied so that the fuel gas is formed is provided. When the fuel thin film 3 is heated by the tubular heating element 1 to supply the vaporized gas, the fuel to be vaporized by heating the tubular heating element 1 is provided. A part of the thin film 3 is scattered in the air flow as the particulate fuel 4 by the air flow supplied from the air supply mechanism b, and the particulate fuel 4, vaporized gas and air are premixed and supplied to the combustion unit 5.

In the drawing, a cylindrical heating element 1 is provided double on the outside of a cylindrical heat-resistant porous body 2, a fuel supply section 10 is provided in a part of the cylindrical heating element 1, and a fuel supply section 10 is provided. An embodiment in which fuel is supplied to the tubular heat-resistant porous body 2 is shown.

The heat-resistant porous body 2 preferably has heat resistance, such as glass wool, asbestos, and porous ceramic, and has many sponge-like fine holes 2 'through which fuel can penetrate. When the fuel supplied to the porous surface of the porous material 2 is enlarged, the fuel thin film 3 is formed so as to close the hole 2 ′. The fuel supply mechanism a may be designed in any way as long as it supplies a suitable amount of fuel such as kerosene or petroleum to the heat-resistant porous body 2 in a permeated state.

The air supply mechanism b employs a mechanism having a fan 6 and a combustion gas supply pipe 7 and capable of adjusting the air flow, and is designed so as to obtain the best combustion state by varying the degree of mixing of air. The fuel thin film 3 is heated by the cylindrical heating element 1, generates steam and swells. At the same time, the supplied air flow turns into particulate fuel 4 and scatters in the air flow, and the particulate fuel 4 evaporates. Since the gas is premixed in the air together with the gas, the power consumption is small, the combustion efficiency is good, and the combustion is stabilized more quickly. The larger the surface area of the tubular heat-resistant porous body 2 including the hole 2 ′ and the smaller the heat capacity, the faster the start of combustion, and the less odorous gas is generated during fire extinguishing. Besides, 4
With a small power of 0 W, a large amount of heat of about 3000 KC can be obtained, and an excellent heating effect is exhibited.

Next, a second, third and fourth embodiments will be described. A fuel supply mechanism a, an air supply mechanism b and a heating mechanism c are provided, and the fuel supplied from the fuel supply mechanism a is heated by the heating mechanism c. In a burner combustion system in which the vaporized fuel and air are premixed by an air supply mechanism b and supplied to a combustion section to be burned, a heating element of a heating mechanism c is formed in a cylindrical heating element 1. A tubular heat-resistant porous body 2 is attached to the tubular heat-generating body 1, and the upper part of the light core 8 is placed on the tubular heat-resistant porous body 2 such that the fuel thin film 3 is formed on the porous surface of the tubular heat-resistant porous body 2. The fuel thin film 3 is provided by the tubular heating element 1 so that the lower portion of the light core 8 is suspended in the fuel tank 9 to supply fuel to the heating mechanism c via the light core 8. Fuel to be vaporized by heating the cylindrical heating element 1 when supplying vaporized gas by heating A part of the thin film 3 is scattered in the air flow as the particulate fuel 4 by the air flow supplied from the air supply mechanism b, and the particulate fuel 4, vaporized gas and air are premixed and supplied to the combustion unit 5.

FIG. 4 shows a second embodiment in which the upper part of the lamp core 8 is attached to the tubular heat-resistant porous body 2, and FIG. 3 shows a third embodiment in which the fuel is supplied to the tubular heat-resistant porous body 2 to improve the fuel supply.

FIG. 6 shows a cylindrical heating element 1 and a cylindrical heat-resistant porous body 2 in which a heating element and a heat-resistant porous body are combined in a cylindrical shape, which are attached to the upper part of the lamp core 8 and the lower part of the lamp core 8. This shows a fourth embodiment in which is suspended in the fuel tank 9.

[0019]

According to the present invention, in the first aspect of the present invention, the heating element of the heating mechanism is formed as a cylindrical heating element, and a cylindrical heat-resistant porous body is added to the cylindrical heating element. A heating mechanism is provided for supplying the fuel from the fuel supply mechanism so that the fuel thin film is formed on the porous surface of the cylindrical heat-resistant porous body, and the fuel thin film is heated by the cylindrical heating element and vaporized. When supplying the gas, a part of the fuel thin film to be vaporized by heating the cylindrical heating element is scattered into the air flow as fine particle fuel by the air flow supplied from the air supply mechanism, and the fine particle fuel, the vaporized gas and the air are dispersed. The fuel thin film formed to cover the surface of the tubular heat-resistant porous body is heated by the tubular heating element, and a part of the fuel gas is vaporized gas. At the same time, the vaporized vapor pressure and the cylindrical heat-resistant porous body A part of the fuel thin film to be vaporized by the passing air flow becomes particulate fuel immediately before vaporization and scatters in the air flow, and the premixed gas of the air, the vaporized gas and the particulate fuel is supplied to the combustion unit. Because of this configuration, the presence of the particulate fuel shortens the time required for stabilizing combustion, and provides a fuel vaporizer in a burner combustion system with excellent practicability in which a combustion state with a large amount of heat can be obtained even when the starting power is small.

According to the second aspect of the present invention, the heating element of the heating mechanism is formed as a cylindrical heating element, and a cylindrical heat-resistant porous body is added to the cylindrical heating element. The upper part of the wick is connected to the cylindrical heat-resistant porous body so that the fuel thin film is formed on the porous surface of the porous body, and the lower part of the wick is suspended in the fuel tank and the heating mechanism is connected to the heating mechanism via the wick. When the fuel thin film is heated by the cylindrical heating element to supply the vaporized gas, a part of the fuel thin film to be vaporized by heating the cylindrical heating element is supplied from the air supply mechanism. The particulate heat-resistant porous material is scattered into the air flow as a particulate fuel by the air flow, and the particulate fuel, the vaporized gas and the air are premixed and supplied to the combustion section. The fuel thin film formed to cover the surface of the At the same time, a part of the fuel thin film that is going to be vaporized by the vaporized vapor pressure and the air flow passing through the tubular heat-resistant porous body becomes particulate fuel immediately before vaporization The air, the vaporized gas and the premixed gas of the particulate fuel are supplied to the combustion section. Due to the presence of the fine particle fuel, the combustion stabilization time is shortened, and the fuel vaporizer in the burner combustion system, which is excellent in practicality and can obtain a combustion state with a large amount of heat even when the starting electric power is small.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a use state showing a first embodiment.

FIG. 2 is an explanatory diagram of generation of fine particles in which a part of a heat-resistant porous body is enlarged.

FIG. 3 is an explanatory diagram of generation of fine particles in which a part of a heat-resistant porous body is enlarged.

FIG. 4 is a front sectional view of a state in which the lamp core is in contact with a lower part of a heat-resistant porous body.

FIG. 5 is a front sectional view of a state in which the light core is in contact with a heat-resistant porous body from above and below.

FIG. 6 is a front sectional view of a state in which a light core is provided along the entire circumference of a heat-resistant porous body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cylindrical heating element 2 Cylindrical heat-resistant porous body 3 Fuel thin film 4 Particulate fuel 5 Burning part 8 Light core 9 Fuel tank a Fuel supply mechanism b Air supply mechanism c Heating mechanism

Claims (2)

(57) [Claims] 1. A fuel supply mechanism, an air supply mechanism, and a heating mechanism are provided, and fuel supplied from the fuel supply mechanism is heated and vaporized by the heating mechanism, and the vaporized fuel and air are premixed by the air supply mechanism. In the burner combustion method in which the fuel is supplied to the combustion section and burned, the heating element of the heating mechanism is formed as a cylindrical heating element, and a cylindrical heat-resistant porous body is attached to the cylindrical heating element, and the fuel supply mechanism is provided. A heating mechanism is provided to supply the fuel supplied from the heater so that the fuel thin film is formed on the porous surface of the cylindrical heat-resistant porous body, and the fuel thin film is heated by the cylindrical heating element to supply the vaporized gas. In this process, a part of the fuel thin film which is to be vaporized by heating the tubular heating element is scattered into the air stream as particulate fuel by the air flow passed through the tubular heating element from the air supply mechanism, and the particulate fuel is vaporized. Premix gas and air A fuel vaporizer in a burner combustion system, wherein the fuel vaporizer is supplied to a combustion section. 2. A fuel supply mechanism, an air supply mechanism, and a heating mechanism are provided. The fuel supplied from the fuel supply mechanism is heated and vaporized by the heating mechanism, and the vaporized fuel and air are premixed by the air supply mechanism. In the burner combustion method in which the heat is supplied to the combustion part and burned, the heating element of the heating mechanism is formed in a cylindrical heating element, and a cylindrical heat-resistant porous body is added to the cylindrical heating element. The upper part of the wick is connected to the cylindrical heat-resistant porous body so that the fuel thin film is formed on the porous surface of the heat-resistant porous body, and the lower part of the wick is suspended in the fuel tank and the wick is connected to the heating mechanism. via arranged to supply fuel, partially cylindrical than air supply mechanism for the fuel film to be vaporized by heating of the tubular heating element when supplying the vaporized gas by heating the fuel film by a tubular heating element Particles by the air flow passing through the heating element A fuel vaporizer in a burner combustion system, wherein the fuel is scattered in an air stream as fuel, and the particulate fuel, vaporized gas and air are premixed and supplied to a combustion section.