JPH07190315A - Liquid fuel combustion apparatus - Google Patents

Abstract

PURPOSE:To provide an apparatus for obtaining stable mixed gas in a liquid fuel combustion apparatus for burning mixed gas of liquid fuel. CONSTITUTION:The liquid fuel combustion apparatus comprises a vaporizing medium 14 to be heated by a heater 1, a continuous fin 15 formed integrally with the medium 14, a vaporizing cylinder 2 having the fin 15 protruding at a bottom, fuel supply means 3 for supplying fuel to the cylinder 2, and combustion air supply means 4, wherein the fin 15 is integrally spirally formed. Since the fin 15 always receives combustion heat from an upper burning part over the entire surface, a temperature in a vaporizing chamber 12 is stably maintained, and a bottom temperature of the cylinder 2 can be stabilized by heat transfer from the fin 15. As a result, stable vaporization and uniform mixed gas can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid fuel combustion apparatus which vaporizes liquid fuel, mixes it with combustion air, and burns the mixture.

[0002]

2. Description of the Related Art A conventional liquid fuel combustion apparatus of this type is shown in FIG.
As shown in FIG. 2, the oil supply port 5 and the air supply port 6 connected to the oil supply pump 3 and the combustion fan 4, respectively, are provided on the side wall of the bottomed vaporization cylinder 2 heated by the heater 1. On the inner peripheral wall surface of the vaporization cylinder 2, a collision surface 7 facing the fuel supply port 5 is formed, and in the upper opening of the vaporization cylinder 2, a mixing plate 9 having a mixture gas passage 8 and a flame port 10 are formed. The burner head 11 in which the
The vaporizing chamber 12 is defined by the mixing plate 9 and the mixing chamber 13 is defined by the mixing plate 9 and the burner head 11.

In the above structure, the heater 1 is energized,
When the vaporization cylinder 2 is heated to a predetermined temperature, the oil supply pump 3 and the combustion fan 4 operate to supply the liquid fuel and the combustion air to the vaporization chamber 12. The liquid fuel that has entered the vaporization chamber 12 collides with the collision surface 7 of the vaporization cylinder 2 and is vaporized,
It is mixed with combustion air and enters the mixing chamber 13 through the mixture passage 8. The air-fuel mixture that has been evenly mixed in the mixing chamber 13 is
It was designed to be injected from the flame nozzle 10 of the burner head 11 and ignited by an ignition device (not shown) to perform combustion.

[0004]

However, the above-mentioned structure has the following problems.

The temperature and the surface condition of the collision surface 7 of the vaporization cylinder 2 are not always constant. When the temperature of the collision surface 7 is low or the surface condition is dense, the liquid fuel is the bottom surface of the vaporization cylinder 2. It becomes easy to drip to the bottom, vaporization phenomenon occurs on the bottom surface, delays vaporization, and causes pulsating combustion.

Further, the bottom surface temperature of the vaporizing cylinder 2 which is far from the combustion section is the lowest, and the vaporization delay is caused by the generation of tar.
Causes adhesion.

On the contrary, when the temperature of the collision surface 7 is high, film boiling vaporization occurs, and the colliding liquid fuel scatters into a spherical shape without causing wet vaporization, so that sufficient vaporization and mixing are not performed and the macromolecules become yellow. It will cause fire combustion, and a stable combustion state cannot be obtained.

The present invention solves the above-mentioned conventional problems. By stably maintaining the vaporization chamber at an appropriate temperature, a stable vaporization state without vaporization delay or generation of macromolecules is obtained, and combustion air The purpose is to obtain an efficient mixed state by supplying.

[0009]

In order to achieve the above object, the liquid fuel combustion apparatus of the present invention has the following constitution.

That is, a vaporized body heated by a heater,
The continuous fin is formed integrally with the vaporized body, a vaporization cylinder protruding from the bottom surface of the continuous fin, fuel supply means for supplying the vaporization cylinder, and combustion air supply means. It is configured to form a spiral shape.

Further, a vaporization body heated by a heater, a continuous fin integrally formed with the vaporization body, a vaporization cylinder projecting the continuous fin on the bottom surface, a fuel supply means into the vaporization cylinder, and a combustion The continuous fins are integrally formed in a meandering loop shape.

[0012]

The present invention has the following functions due to the above-mentioned constitution.

That is, the liquid fuel combustion apparatus of the present invention is
Since the continuous fins protruding from the bottom surface of the vaporization cylinder are heated by the heater during ignition, fuel and combustion air are supplied,
The fuel and combustion air passing above the continuous fins are also instantly heated in the vaporization chamber.

Moreover, during combustion, the continuous fins constantly receive the heat of combustion from the upper combustion section over the entire bottom surface of the vaporization cylinder, so that the temperature in the vaporization chamber can be maintained stable and the heat transfer from the continuous fins causes the vaporization cylinder to cool. Since the bottom surface temperature can also be stabilized, it is possible to obtain a stable vaporized state without vaporization delay or generation of macromolecules, and a uniform and efficient mixed state by supplying combustion air.

Further, by stabilizing the bottom temperature of the vaporizing cylinder,
It is possible to prevent the generation and adhesion of tar.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The same members as those in FIG. 5 are designated by the same reference numerals.

In FIGS. 1 and 2, a vaporized body 14 heated by the heater 1 is formed on the bottom of a bottomed vaporization cylinder 2 in which a heater 1 for heating is embedded below, and an integrated product connected to the vaporized body 14. A continuous fin 15 having a spiral shape is joined to each other, and an oil supply port 5 and an air supply port 6 respectively connected to the oil supply pump 3 and the combustion fan 4 are provided on the side wall of the vaporization cylinder 2. On the inner wall surface of the vaporization cylinder 2, a collision surface 7 facing the fuel filler port 5 is formed.
A mixing plate 9 having an air-fuel mixture passage 8 at the upper opening of
A burner head 11 having a flame outlet 10 is provided, a vaporization chamber 12 is defined by the vaporization cylinder 2 and the mixing plate 9, and a mixing chamber 13 is formed by the mixing plate 9 and the burner head 11.
Is partitioned.

The continuous fins 15 projecting from the bottom surface of the vaporizing tube 2 are formed by punching out an aluminum material or the like and are thermally connected to the vaporizing body 14, and the shape thereof can be freely set. It is a thing.

In the above structure, when the heater 1 disposed below the vaporization tube 2 is energized to shorten the remaining heat time, the vaporizer 14, the continuous fins 15 and the vaporization tube 2 are heated to a predetermined temperature. The fuel pump 3 and the combustion fan 4 operate to supply the liquid fuel and the combustion air to the vaporization chamber 12. The liquid fuel that has entered the vaporization chamber 12 collides with the collision surface 7 and, at the same time, starts vaporization and evaporation and is mixed with combustion air. Part of the fuel particles that have been split / scattered also serve as a vaporization surface at the bottoms of the continuous fins 15 and the vaporization cylinder 2.

In particular, after the spiral continuous fins 15 projecting on the bottom surface of the vaporization cylinder 2 are heated by the heater 1 at the time of ignition,
Since the fuel and the combustion air are supplied, the continuous fin 1
Fuel and combustion air passing above the vaporization chamber 12
Since it is instantly heated inside, it is possible to obtain an efficient vaporized / mixed state from the rising.

Moreover, at the time of combustion, the continuous fins 15 are
Always receives the combustion heat from the upper combustion section over the entire bottom surface of the vaporization cylinder, so that the temperature in the vaporization chamber 12 can be maintained stable and the bottom surface temperature of the vaporization cylinder 2 can be stabilized by the heat transfer from the continuous fins 15. You can As a result, it is possible to obtain a stable vaporized state without vaporization delay and generation of macromolecules, and a uniform and efficient mixed state by supplying combustion air, which in turn makes it possible to make the configuration of the mixing space small and compact. it can.

Further, the stabilization of the bottom surface temperature of the vaporizing cylinder 2 effectively acts to promote vaporization, and the generation and adhesion of tar can be prevented. As a result, long-lived liquid fuel combustion in which no odor is generated is produced. The device can be obtained.

Next, another embodiment of the present invention will be described with reference to FIG. 3 is different from the above-described embodiment in that the continuous fins 15 made of an integral product are formed in a meandering loop shape, and even in this configuration, the continuous fins 15 extend over the entire bottom surface of the vaporization cylinder 2 and are efficient. A vaporized / mixed state can be obtained.

In addition, the continuous fin 15 made of an integrated product is
Although the configuration has been described in which it is formed on the bottom surface of the vaporization cylinder 2 via the vaporization body 14, it may be directly connected to the bottom surface of the vaporization cylinder 2 as shown in FIG.

Further, since the continuous fins 15 can be formed by punching, it is possible to change the height and to provide openings or cutouts on the fin surface. If the continuous fins 15 can be formed continuously as an integrated product, the effect is particularly changed. There is no such thing.

[0026]

As described in the above embodiments, the liquid fuel combustion apparatus of the present invention has the following effects.

(1) The fuel and the combustion air are supplied after the continuous fins, which are integrally formed and protrude from the bottom surface of the vaporization cylinder, are heated by the heater at the time of ignition, so that the fuel passing above the continuous fins is supplied. Since the combustion air is also instantly heated in the vaporization chamber, an efficient vaporized / mixed state can be obtained from the start.

(2) During combustion, the continuous fins constantly receive the heat of combustion from the upper combustion section over the entire bottom surface of the vaporization cylinder, so that the temperature in the vaporization chamber can be maintained stable and the heat transfer from the continuous fins causes the vaporization cylinder to cool. The bottom surface temperature of can also be stabilized. As a result, it is possible to obtain a stable vaporized state without vaporization delay and generation of macromolecules, and a uniform and efficient mixed state by supplying combustion air, which in turn makes it possible to make the configuration of the mixing space small and compact. it can.

(3) Stabilization of the bottom temperature of the vaporizing cylinder works efficiently to promote vaporization, and it is possible to prevent the generation and adhesion of tar. As a result, long-lived liquid fuel combustion in which no odor is generated The device can be obtained.

[Brief description of drawings]

FIG. 1 is a sectional view of a liquid fuel combustion apparatus according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is a sectional view of the other embodiment of the present invention.

FIG. 4 is a cross-sectional view when a continuous fin is directly connected to a vaporization cylinder.

FIG. 5 is a sectional view of a conventional liquid fuel combustion device.

[Explanation of symbols]

 1 Heater 2 Vaporizing Cylinder 3 Oil Pump (Fuel Supply Means) 4 Combustion Fan (Combustion Air Supply Means) 14 Vaporizer 15 Continuous Fins

Claims (2)

[Claims] 1. A vaporized body heated by a heater, a continuous fin integrally formed with the vaporized body, a vaporization cylinder protruding from the continuous fin on the bottom surface, a fuel supply means into the vaporization cylinder, and combustion. And a continuous air supply means, wherein the continuous fins are integrally formed in a spiral shape. 2. A vaporized body heated by a heater, a continuous fin integrally formed with the vaporized body, a vaporization cylinder projecting the continuous fin on the bottom surface, a fuel supply means into the vaporization cylinder, and combustion. A liquid fuel combustion apparatus comprising a supply air supply means, and the continuous fins integrally formed in a meandering loop shape.