JPS6250722B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is applicable to liquids using a vaporization premixing method, which are used with a relatively small calorific value, such as in oil stoves, oil stoves, etc., and which are desired to have a wide range of heat adjustment. This invention relates to improvements in fuel combustion devices.

Conventional configurations and their problems Various types of liquid fuel combustion devices using the vaporization premixing method have been tried in the past, but all of them are unsuitable for small exothermic combustion or have problems with thermal power adjustment. This was accompanied by some inconvenience in use, such as a narrow range. For example, the minimum combustion rate that has been put into practical use in vaporization burners is limited to about 1500/h, which is limited by the stable supply of fuel, and it is technically difficult to achieve a small combustion rate. . If white kerosene is used as fuel,
When the calorific value is 1500Kcal/h, the fuel is 3c.c./min,
At 1000Kcal/h, it becomes 2c.c./min. If this fuel is not supplied without changing over time, the mixture ratio with the combustion air will change, producing soot, odor, and unburned gas due to incomplete combustion.

Therefore, as a means for stably supplying a small amount of combustion, there is a method of selectively burning a part of the atomized fuel particles. Among them, fuel is supplied to the surface of a rotating plate that rotates at high speed, and a part of the phase range of the atomized fuel injected from the entire periphery is selectively taken out and sent to the vaporization chamber. With this, the minimum combustion amount can be obtained up to about 500Kcal/h, and the maximum
Since it can be adjusted steplessly up to about 2500 Kcal/h, it is suitable for the above-mentioned purpose and is easy to use.

However, in this type of combustion device, the atomized fuel particles scattered from the rotating plate collide with the damper wall, and the particles that stick to the damper wall or bounce back and float due to the flow caused by the rotation of the rotating plate. As a result, the amount of atomized fuel scatters from the damper opening, and the amount of atomized fuel varies.
The set combustion rate was changed, and red flame combustion caused soot, CO, and odors, which became very inconvenient problems.

OBJECTS OF THE INVENTION In view of the above drawbacks, the present invention provides a liquid fuel combustion device that can always perform stable combustion without fluctuations in combustion amount.

Structure of the Invention In order to achieve the above object, the liquid fuel combustion device of the present invention includes an atomization container equipped with a rotatable fuel damper, and a refueling container provided with a hole opening downward in substantially the same direction as the rotation axis. It consists of a pipe and a rotating plate installed directly below the oil supply pipe on the same axis, and by changing the degree of opening of the fuel damper, a part of the atomized fuel generated at the periphery of the rotating plate is removed. The fuel damper and the damper on the atomization container side are configured so as to selectively inject the fuel into the vaporizer, and the distance from the end of the damper on the atomization container side upstream in the rotational direction of the rotary plate to its root. It is configured to be set sufficiently large along the direction in which the atomized fuel flies.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

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

Reference numeral 1 denotes an atomization container, and a fan casing 2, a motor casing 3, and a pump casing 4 are connected to the bottom thereof. The fan casing 2 is provided with an air fine adjustment screw 5 and a fan guide 6, and a motor 8 is attached to the motor casing 3 via a motor mounting leg 7. The double-shaft motor 8 has a pump impeller 9 at the lower end, a fan 10 at the center, and a rotating plate 11 (hereinafter referred to as a rotor) at the upper end, which are fixed to the motor shaft and rotated together. The pump impeller 9 is located below the oil level 13 of the oil tank 12, and generates a pump function by rotation. When power is applied to the motor 8, the shaft rotates, and fuel is sucked through the suction port 14 and discharged from the pump discharge port 15 by the pump function generated by the rotation of the pump impeller 9. After the pressure of the discharged fuel is adjusted by the pressure regulating valve 16, it passes through the fuel supply pipe 17 and is passed through the orifice 19 housed in the holder 18.
After passing through, the oil is dripped onto the rotor 11 from the oil supply pipe 20. The fuel dripped onto the rotor 11 is
The rotation of the rotor uniformly atomizes the entire 360° circumference, a part of which is sent to the carburetor 22 through the atomized fuel outlet 21, and the rest is sent to the return pipe 2.
3, return to the oil tank 12 again. The fuel damper 24 is rotated by the lever 25, and by continuously changing the opening area of the atomized fuel outlet 21,
While continuously changing the flow rate of atomized fuel sent to the carburetor 22, the air damper 27 is rotated via the interlocking sleeve 26 to change the air damper opening area.

On the other hand, the combustion air taken in by the fan 10 through the intake air filter 28 is controlled by the air damper 27, which changes in conjunction with the movement of the fuel damper.
The atomized fuel flow rate is continuously changed according to the flow rate of the atomized fuel, and is supplied to the carburetor 22 through the air outlet 29.

The vaporizer heated by the heater 30 is attached to the atomization container 1 via a heat insulating material 31, and gasifies the atomized fuel sent from the atomized fuel outlet 21 by the heating wall. The gasified fuel is mixed with combustion air supplied from the air outlet 29 and combusted in the burner head 32.

FIG. 2 is a horizontal sectional view of the main part of the atomization container of the liquid fuel combustion apparatus according to the embodiment of the present invention.

The fuel atomized by the rotor 11 in the atomization container 1 is attached to the damper metal fitting 24b attached to the fuel damper 24a and the support metal fitting 33 fixed in the atomization container 1, and is blown away from the rotor 11. Atomized fuel outlet 2 defined by the rotor 11 side tip of each fixed damper 34 extended to have a sufficient length along the direction of the atomized fuel to be used.
1 to the vaporizer 22 via the insulation material 31.
reaches and is vaporized.

In the above configuration, the atomized fuel scattered from the rotor 11 is transferred to the damper fitting 24b as shown in FIG.
The selected atomized particle group 35 flies out from the opening of the fixed damper 34, but the rotation direction 39 of the rotor 11
A part of the atomized fuel that collides inside the fixed damper 34 on the upstream side becomes a liquid film 36, and a part rebounds and becomes scattered particles 37. The atomized particles 37 are transported and the liquid film 36 is swept away by the air flow 38. However, since the fixed damper 34 has a sufficient length in the direction in which the atomized particles fly, the liquid film 36 is not caused by the rotor 11. The airflow 38 collides with the surface of the fixed damper 34, and the flow changes toward the base of the fixed damper 34, so that the airflow 38 carries out the scattered particles 37 and the liquid film 36 from the atomization container 1. This prevents the amount of fuel flowing out from the atomized fuel outlet 21 from changing.

As a result, the combustion state will no longer lift or become a red flame, causing CO, soot, and bad odors to be generated, and the set combustion amount will no longer change.

Effects of the Invention As is clear from the above description, according to the present invention, the fuel damper and the damper on the atomization container side are configured,
The distance from the end of the damper on the atomization container side upstream of the rotary plate to its base is extended along the direction in which the atomized fuel flies, ensuring stable and good combustion without fluctuations in combustion amount. It is possible to obtain a liquid fuel combustion device that has the excellent effect of being able to perform the following steps.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a liquid fuel combustion device showing one embodiment of the present invention, and FIG. 2 is a horizontal sectional view of the main part thereof. 1... Atomization container, 11... Rotor (rotating plate),
24b...damper metal fitting, 34...fixed damper, 2
1... Atomized fuel outlet.

Claims (1)

[Claims] 1. An atomization container containing a rotatable fuel damper, an atomization container-side damper fixed to the atomization container and facing the fuel damper with a gap, and a damper facing downward in substantially the same direction as this rotation axis. It consists of a fuel supply pipe provided with an open hole, and a rotating plate installed directly below the fuel supply pipe coaxially with the fuel supply pipe, and rotates the fuel damper to create a space between the fuel damper and the damper on the atomization container side. A part of the atomized fuel generated at the periphery of the rotating plate is selectively injected into the vaporizer by changing the degree of opening of the opening of the rotating plate, and the atomized fuel on the upstream side in the rotational direction of the rotating plate is A liquid fuel combustion device in which the distance from the end of the damper on the container side to its base is extended along the direction in which the atomized fuel flies.