JP2676271B2 - Vaporization type combustion device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vaporization type combustion apparatus of a type that vaporizes and burns liquid fuel, particularly kerosene.

(Prior Art) A vaporizer that vaporizes liquid fuel by conventional heating and a burner that receives vaporized gas vaporized by the vaporizer and burns it at a flame mouth part are heated by the burner. Such an arrangement is known, for example, from Japanese Utility Model Laid-Open No. 62-131217.

(Problems to be Solved by the Invention) However, in this seed vaporization type combustion device, when the burner is provided with a burner heating burner section facing the vaporizer and heating the vaporizer, The burner portion for heating the furnace has a problem that the temperature rises by receiving the radiant heat of the vaporizer and the flame in the burner portion enters into the flame opening and burns, that is, so-called back combustion.

An object of the present invention is to obtain a vaporization type combustion device without such a problem.

(Means for Solving the Problems) In order to achieve such an object, the present invention provides a vaporizer for vaporizing a liquid fuel by heating, and a vaporized gas vaporized by the vaporizer to be burned at a flame mouth. Equipped with a burner,
The vaporizer is heated by an electric heater and heat from the burner, and heats the flame mouth of the burner facing the main flame mouth and the vaporizer. And a flame port for heating the vaporizer, and the ejection speed of the vaporized gas ejected from the flame port for heating the vaporizer is made higher than that from the main flame port.

(Operation) In this case, the burner for heating the vaporizer is heated by the radiant heat of the vaporizer to raise the temperature because the jet speed of the vaporized gas at the flame mouth for heating the vaporizer is increased. However, the so-called back combustion in which the flame in the burner portion enters into the flame opening and burns does not occur.

(Examples) The present invention will be described with reference to Examples shown in the drawings.

In the drawings, 1 is a vaporizer that vaporizes liquid fuel by heating, 2
Indicates a burner that receives vaporized gas vaporized by the vaporizer 1 and burns it at the flame mouth portion 3. The vaporizer 1 receives the combustion heat from the electric heater 4 and the burner 2 to vaporize the liquid fuel. Is configured.

The configuration so far is not particularly different from the conventionally known one.

According to the present invention, the burner 3 provided in the burner 2 includes a main flame outlet 3a and a vaporizer heating flame outlet 3b that faces and heats the vaporizer 1. The burner heating flame outlet portion 3b has a jetting speed of vaporized gas spouted from the main flame outlet portion 3a which is higher than that of the main flame outlet portion 3a. Reference numeral 2 denotes a main burner main body 2c in which side plates 2b are provided at both ends of a body portion 2a obtained by press-molding a long seamless circular tube into an ellipse or an ellipse, and the main burner main body.
From the upper half position of the side plate 2 on one side of 2c, a side plate 2e is applied to the opposite end of the body part 2d formed by press-molding a seamless circular tube into an ellipse or an ellipse to communicate with the inside of the main burner body 2c. A sub-burner main body 2f is provided, and a main flame opening 3a is provided along the longitudinal direction on the upper surface of the body 2a of the main burner main body 2c.
The wire mesh 5 is applied to the groove provided on the upper surface of 2a, and
A back net 6 made of a punching plate is provided on the inner surface of the body to form a flame net 3b for heating the carburetor, and a wire mesh 7 is formed in a groove provided on the upper surface of the body 2d. A wire net 5 which is formed by providing a back net 8 made of a punching plate on the inner surface of the wire net 7 with a space therebetween to form a main flame mouth portion 3a.
The diameter of 0,95φ, (cm ² ) the diameter of the back net 6 is 0,35φ, and the diameter of the wire net 7 and the back net 8 constituting the flame port 3b for heating the carburetor is 0,35φ. Then, the ejection rate of the vaporized gas from the flame port 3b for heating the vaporizer was made higher than the ejection rate of the vaporized gas from the main flame port 3a. In the drawing, reference numeral 9 denotes a mixing pipe which is located below the sub-burner main body 2f and is inserted into the main burner main body 2c, and a nozzle 10 connected to the vaporizer 1 is provided at the center of the outer end of the mixing pipe 9. No, when the vaporized gas is ejected from the nozzle 10, air is simultaneously sucked into the mixing pipe 9, the vaporized gas and the air are mixed in the mixing pipe 9, and the air-fuel mixture is supplied to each flame port 3a, 3b. To do.
As is clear from FIG. 2, the carburetor 1 is configured such that a part of the oil supply pipe 12 connected to the oil supply source 11 is made of stainless or other heat resistant material, and the electric heater 13 is connected to the part 12a made of the heat resistant material. The nozzle 10 was attached to the tip of the oil supply pipe 12 by joining them by high-pressure discharge spraying of copper. When an electromagnetic valve (not shown) is exposed to the nozzle 10, and the temperature sensor exposed to the inside of the valve casing detects that the vaporized gas in the valve casing has reached a certain temperature or higher, The solenoid valve was opened.

Then, a wire mesh 14 is provided in the oil supply pipe 12 which constitutes the vaporizer 1.
In order to accelerate the temperature rise in the oil supply pipe 12.

In addition, 15 is a constant oil leveler interposed in the middle of the oil supply pipe 12, 16
Is an electromagnetic pump, and 17 is a spark plug.

Reference numeral 18 denotes a fire transfer plate extending between the main flame port 3a and the flame port 3b for heating the carburetor, and a side surface of the flame transfer plate 18 is provided with a notch 18a for supplying air. Reference numeral 19 denotes an enclosure surrounding the lower side of the sub-burner main body 2f and its peripheral side surface.
It was prevented that the flame from was sucked into the mixing tube 9 side.

Incidentally, in the one shown in FIG. 4, a pair of burners 2 including the main burner main body 2c and the sub-burner main body 2f are arranged along the flame burner portion 3b of both sub-burner main bodies 2f, and a common carburetor 1 is provided. The vaporizer 1 was provided with the aerosol 10 facing the mixing tube 9 of each burner 2.

However, when a pair of the burners 2 is provided side by side, as shown in FIG. 5, only the one burner 2 is configured to include the main burner body 2c and the sub-burner body 2f, and the sub-burner body 2f is provided. The vaporizer 1 may be exposed to the flame port 3b of the burner 2 on the side, and the vaporizer 1 may be provided with the aerosol 10 facing the mixing pipe 9 of each burner 2.

In FIGS. 4 and 5, 20 is the burner 2, 2.
The fire transfer board in between is shown.

(Effect of the Invention) The flame mouth of the burner is composed of a main flame mouth and a vaporizer heating flame mouth that faces the vaporizer and heats the vaporizer, and a flame for heating the vaporizer. Since the ejection speed of the vaporized gas ejected from the mouth was set to be higher than the ejection speed of the vaporized gas from the main flame mouth, the vaporized gas ejected from the flame mouth for heating the vaporizer was increased by the amount corresponding to the increase in the vaporizer. Even if the heating burner receives the radiant heat of the carburetor and its temperature rises and the combustion speed increases, the so-called back combustion in which the flame in the burner enters the flame mouth and burns does not occur. It has an effect.

[Brief description of the drawings]

FIG. 1 is a cutaway side view of an embodiment of the present invention, FIG. 2 is a perspective view thereof, FIG. 3 is a cross-sectional view taken along the line AA of FIG. 2, and FIGS. It is an oblique view of an example. 1 ... Vaporizer 2 ... Burner 3 ... Flame port 3a ... Main flame port 3b ... Flame port for heating vaporizer 13 ... Electric heater

Continuation of the front page (56) References: 1-157922 (JP, U): 60-143220 (JP, U): 58-57643 (JP, U): 54-24737 (JP) , U)

Claims (1)

(57) [Claims] 1. A vaporizer for vaporizing liquid fuel by heating,
A burner which receives vaporized gas vaporized by the vaporizer and burns it at a flame mouth, the vaporizer being heated by an electric heater and heat from the burner, The flame mouth of the main flame mouth and the flame mouth for heating the vaporizer facing the vaporizer to heat it, and the vaporized gas of the vaporized gas ejected from the flame mouth for heating the vaporizer A vaporization type combustion device in which the ejection speed is higher than that from the main flame opening.