JP3116719B2 - Liquid fuel combustion device - Google Patents

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 such as a large oil stove and a hot oil boiler.

[0002]

2. Description of the Related Art A conventional liquid fuel combustion apparatus such as a large oil heater is constructed as shown in FIG. That is,
First, a burner case 3 and an oil leveler 4 are attached to a gantry 2 of a main body 1, and an outlet 5 a of a burner fan 5 driven by a motor 5 b is connected to a supply port 3 a of the burner case 3 via a hose 6. A pot type burner 7 is provided inside the burner case 3, and a fuel pump 8 attached to an oil leveler 4 is connected to an oil supply port 7 a of the pot type burner 7 via an oil supply pipe 9. Further, an ignition device 10 faces the pot type burner 7, and the fuel sent from the fuel pump 8 is ignited and burned.

The pot type burner 7 has a built-in lower burner 11, an auxiliary burner 12, and an upper burner ring 13 for promoting the vaporization and combustion of the fuel supplied to the pot type burner 7. The burned exhaust gas is the radiation glass cylinder 1
4 through a radiator 15 to be discharged from an exhaust pipe 16.

[0004]

However, in the above-mentioned conventional configuration, there is a problem that vaporization is not sufficient at the time of initial combustion immediately after ignition, soot and carbon monoxide are generated remarkably, and combustion characteristics are not sufficient. there were. In addition, the temperature near the oil supply port 7a of the pot type burner 7 rises to the tar generation temperature, and there is a diametrical problem such as clogging the oil supply port 7a. Furthermore, at the time of fire extinguishing, since the residual oil near the filler port 7a continues to burn and cannot be extinguished instantaneously, or when reigniting after extinguishing once, the fuel is quickly vaporized. Burner 7 and burner 12
There were problems such as spontaneous ignition and explosion caused by residual heat.

The present invention solves the above-mentioned problems, and prevents the generation of soot and carbon monoxide even in the initial stage of ignition, shifts to smooth stable combustion, instantaneously extinguishes fire even when extinguishing, and instantaneously reignites. It is intended to be able to do so.

[0006]

According to the present invention, in order to achieve the above object, a pot type burner is connected to a bottom portion of a burner cylinder .
A vaporizer for vaporizing fuel is provided inside the burner bottom, and a mixed gas from the vaporizer is burned in the burner cylinder, and a burner ring is provided above the burner head in the burner cylinder to heat the vaporizer. And the bar
The burner head and the vaporizer are covered with the burner cylinder and the burner bottom.
It is configured as follows.

[0007]

According to the present invention, the carburetor is heated by a heater in advance, and when a predetermined temperature is reached, fuel and combustion air are supplied to the carburetor for combustion. The carburetor is heated by the radiant heat from the carburetor to minimize the energization of the heater of the carburetor and continuously burn while reducing power consumption.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. 1. In FIG.
And oil leveler 4 and burner case 3
Burner fan 5 driven by a motor 5b to the air supply port 3a of the burner
Outlet 5a is connected via a hose 6. A burner cylinder 7a having a large number of air holes 7c in the peripheral wall and a burner bottom 7b are provided inside the burner case 3, and a vaporizer 18 having a sheathed heater 17 is attached to the burner bottom 7b, and attached to the oil leveler 4. A nozzle 9a communicating with an oil supply pipe 9 of the fuel pump 8 is exposed.

A part of the combustion air sent from the burner fan 5 is supplied from the primary air hole 18a around the nozzle 9a into the carburetor 18 and mixed with the fuel vaporized therein, and the mixed gas is vaporized. Squirt from the burner head 19 attached to the upper part of the burner 18, and the small hole 19a of the burner head 19
It is ignited by the ignition electrode 20 provided in the vicinity, and mixes with the secondary air ejected from the air hole 7c of the burner cylinder 7a and burns.

Inside the burner cylinder 7a, a lower burner ring 11 and an upper burner ring 13 are incorporated to promote mixing and combustion of vaporized gas. It is configured to be discharged from the exhaust pipe 16 through the exhaust pipe.

In the above configuration, when the temperature of the vaporizer 18 is detected by the thermistor 21 and reaches a predetermined temperature, the fuel pump 8 and the burner fan 5 are driven. As a result, the fuel is supplied to the vaporizer 18 through the nozzle 9a and vaporized, mixed with the primary air supplied from the burner fan 5 through the primary air hole 18a, and mixed with the small hole 19a of the burner head 19.
Erupts from If this mixed gas is ignited by the ignition electrode 20, the combustion starts, and the ignition is detected by the flame rod 22 to continue the combustion.

After the combustion is started in this manner, the lower burner ring 11 and the upper burner ring 13 provided in the burner cylinder 7a are heated to a high temperature, and the radiant heat of the carburetor 18 causes the carburetor 18 to be heated. Even if the energization of the sheath heater 17 is stopped, the fuel is vaporized satisfactorily.

Further, secondary air is supplied to the outer periphery of the burner head 19 from the air hole 7c of the burner cylinder 7a, and the flame formed in the burner head 19 obtains sufficient secondary air to perform good combustion. Can be.

[0014]

As described above, the liquid fuel combustion apparatus according to the present invention can ensure good combustion performance by utilizing the features of the vaporizing burner. That is, the ignition is smooth and stable, and the generation of soot and carbon monoxide is small. Also, during normal combustion, the temperature of the vaporizer is stabilized by the radiant heat from the burner ring, good vaporization can be maintained without energizing the sheathed heater, tar and carbon adhesion is small, and from strong combustion to weak combustion Control with good tracking performance is possible.

In addition, the fire is extinguished instantly, and even if re-ignited, there is little danger of explosion and the like, and the safety is high.

Further, the features of the pot type burner are maintained as they are, that is, high calorie and low noise, wide combustion range from strong combustion to weak combustion, and abundant supply of secondary air from the burner cylinder. Low and low NO
The effect of being _X can be secured.

[Brief description of the 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 cross-sectional view of a conventional liquid fuel combustion device.

[Explanation of symbols]

 Reference Signs List 3 burner case 5 burner fan 7a burner cylinder 7c air hole 8 fuel pump 11 under burner ring 13 above burner ring 17 sheathed heater 18 carburetor 19 burner head

Claims (1)

(57) [Claims] 1. A and the burner tube of the pot burner provided with a plurality of air holes in the peripheral wall portion, and continuously provided to the bottom portion of the burner tube
A burner bottom provided inside the burner ; a vaporizer arranged inside the burner bottom to vaporize fuel supplied from a fuel pump and to take in a part of air supplied from a burner fan as primary air to form a mixed gas; A burner head for burning the mixed gas from the vaporizer, and a portion of air from the burner fan provided on the outer periphery of the burner cylinder and supplying a portion of air from the burner cylinder to the outer periphery of the burner head as secondary air from an air hole of the burner cylinder a burner casing which is provided to the burner head above the burner tube within, consists of a burner ring for heating the vaporizer with radiant heat, prior to the burner head and the vaporizer
A liquid fuel combustion device configured to be covered by the burner cylinder and the burner bottom .