JPS5952108A - Liquid fuel combustion apparatus - Google Patents

Abstract

PURPOSE:To obtain stabilized combustion without fluctuation in the rate of combustion, by positioning each end of an opening on the side of a fuel damper and that on the side of an atomizer casing in the neighborhood of the same circumference to the shaft of a rotating pan. CONSTITUTION:The fuel atomized by a rotor 11 in an atomizer casing is injected from an outlet 21 of atomized fuel, and is fed into an atomizer 22 (not shown) to be atomized, being interposed by a heat insulating material 31. The position of the outlet 21 is determined by each end part of a damper fittings 24b fitted to a fuel damper 24a and of a fixed metal part 34 fitted to a supporting metal 33 fixed in the casing 1 of an atomizer, being set in the same distance from the rotating shaft of a rotor 11. In such a constitution, the rate of fuel injected from the outlet 21 of atomized fuel is not changed, even if the direction of atomized fuel sprayed by the rotor 11 is changed.

Description

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

Conventional structure and its problems Conventional liquid fuel combustion devices using vaporization premixing method:
Various methods have been tried in the past, but all of them have been inconvenient in use, such as being unsuitable for combustion with small heat generation or having a narrow range of firepower adjustment. For example, the minimum combustion rate that has been put into practical use in vaporizing burners is limited by the stable supply of fuel, and is approximately 1,6001/h, and it is technically difficult to achieve a combustion rate smaller than this. . If white kerosene is used as fuel, 1.500 Kc
When the calorific value is a l/h, the fuel is 3cc7min+1
+ OOOKCa IA is 2cc7/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 wind can be obtained up to about 500 Kcal/b,
Moreover, since it can be adjusted steplessly up to a maximum of about 2500 Kcal/h, it is suitable for the above-mentioned purpose and is easy to use.

However, in this type of combustion device, changes in the rotational speed of the rotary plate, changes in viscosity due to fuel temperature, and
Due to the misalignment between the rotating shaft and the opening direction of the fuel supply pipe, etc., the direction of scattering of the atomized fuel generated from the periphery of the rotation 111 is different, and the opening end on the damper side and the atomization container side are different. If the position of the opening end is different from the rotation axis of the rotary plate, the amount of atomized fuel injected from the opening formed by each opening end will be different, and the set combustion amount will change. This has become a very inconvenient problem, such as when the combustion condition is lifted, causing the generation of CO and odors, and the generation of soot, Co, and odors due to red flame combustion.

OBJECTS OF THE INVENTION In view of the above-mentioned 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 has the following features:
An atomization container with a rotatable fuel damper inside, a fuel supply pipe with a hole opening downward in almost the same direction as this rotation axis, and a rotary plate installed directly below the fuel supply pipe and coaxial with it. The opening on the fuel damper side is configured to change the opening degree of the opening of the fuel damper to selectively inject a part of the atomized fuel generated at the periphery of the rotary plate to the carburetor. The ends of the opening on the atomizing container side and the atomizing container side are located close to the same circumference with respect to the axis of the rotary plate.

Description of examples 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 apparatus according to an embodiment of the present invention.

Reference numeral 1 denotes an atomizing 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 includes an air fine adjustment screw 6 and a fan guide 6.
A motor 8 is attached to the motor casing 3 via a motor attachment leg 7. The double shaft motor 8 has a pump impeller 9 at its lower end. Fan 10 in the center. A rotary plate 11 (hereinafter referred to as rotor) is fixed to the upper end of the motor shaft so that the rotary plate 11 rotates together with the motor shaft. 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 in from the suction port 14 and discharged from the pump discharge port 16 by the pump function generated by the rotation of the pump impeller 90. After the pressure of the discharged fuel is adjusted by the pressure regulating valve 16, it is transferred to the fuel supply pipe 17.
After passing through the orifice 19 housed in the holder 18, the oil is dripped onto the rotor 11 from the oil supply pipe 2o. The fuel dropped onto the rotor 11 is atomized uniformly over the entire circumference 3600 by the rotation of the rotor, 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. 23, it returns to the oil tank 12 again.

The fuel damper 24 is rotated by the lever 26, and by continuously changing the opening area of the atomized fuel outlet 21,
At the same time, the flow rate of atomized fuel sent to the carburetor 22 is changed continuously, and at the same time, the air damper 27 is
Rotate to change the air damper opening area.

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

The vaporizer heated by the heater 3o is connected to the atomization container 1 via the heat insulating member 31, and is connected to the atomization container 1 through the atomization fuel outlet 21.
The atomized fuel f4 fed into the tank is gasified by the heating wall. The gasified fuel is mixed with combustion air supplied from the air outlet 29 and burned in the burner head 32.

FIG. 2 is a horizontal cross-sectional view of the main part of the atomization container of the ljk-oil combustion apparatus according to one embodiment of the present invention.

The fuel atomized by the rotor 11 in the atomization container 1 is
The mist is determined by the tips of the damper fitting 24b attached to the fuel damper 24a and the fixing fitting 34 attached to the support fitting 33 fixed in the atomization container 1, which are set at equal distances from the rotation axis of the rotor 11. The oxidized fuel jumps out of the outlet 21, reaches the vaporizer 22 via the heat insulator 31, and is vaporized.

In the above configuration, the atomized fuel scattered from the rotor 11 is transferred to the damper metal fitting 33 located at the same distance from the rotation axis of the rotor 11.
Atomized fuel outlet 2 determined by the tip and the tip of the fixing fitting 34
1, the rotational speed of the rotor fluctuates, the viscosity changes due to changes in fuel temperature, and the axis of the rotor 11 and the opening direction of the oil supply pipe 2o become misaligned, causing the oil to fly out from the rotor 11. Even if the direction of the atomized fuel changes, the amount of fuel flying out from the atomized fuel outlet 21 will not change.

Therefore, the combustion state does not lift or become a red flame, which prevents Co, soot, and bad odors from being generated, and the set combustion amount does not change.

Effects of the Invention As is clear from the above explanation, according to the present invention, the respective ends of the opening on the fuel damper side and the opening on the atomization container side are located near the same circumference with respect to the axis of the rotating plate. Therefore, it is possible to obtain a liquid fuel combustion device that has an excellent effect of being able to always perform stable and good combustion without causing fluctuations in the amount of combustion.

[Brief explanation of drawings]

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 fitting, 34...
...Fixing bracket, 21...Atomized fuel outlet. Name of agent: Patent attorney Toshio Nakao and 1 other person
l Meatll12Figure 3

Claims (1)

[Claims] An atomization container with a rotatable fuel damper inside, a fuel supply pipe with a hole opening downward in almost the same direction as this rotation axis, and a rotary plate installed directly below the fuel supply pipe and coaxial with it. The opening on the fuel damper side is configured to change the opening degree of the opening of the fuel damper to selectively inject a part of the atomized fuel generated at the periphery of the rotary plate to the carburetor. A liquid fuel combustion device in which the ends of the opening on the side of the atomizing container and the opening on the side of the atomizing container are located near the same circumference with respect to the axis of the rotary plate.