JPS5842730Y2 - liquid fuel combustion equipment - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a liquid fuel combustion device that mixes liquid fuel, particularly kerosene vapor, and air and supplies the mixture to a combustion section for combustion.

Conventionally, in this type of combustion apparatus, for example, the fuel supplied to the combustion chamber is atomized by a rotating body, and the atomized fuel is sent into a heating chamber heated by combustion heat to be heated and vaporized, and this is forcibly supplied. There is a type in which combustion air is ejected into the combustion section to cause combustion.

In such a combustion device, a portion of the atomized fuel is exposed until the heating chamber is sufficiently heated.

The present invention aims to obtain a vaporized gas with a large fuel gas mixture ratio by effectively utilizing this exposed fuel, and to obtain a device that burns the fuel and naturally eliminates the oil stagnation over time. The purpose is to have a combustion plate 1 on the top.
A heating chamber 4 whose outer shell 3 is made of a material with good thermal conductivity is provided in a diffusion chamber 2 equipped with In a type in which the fuel is vaporized and then combusted in the combustion section 5 on the upper surface of the combustion plate, the lower wall 2a of the diffusion chamber 2 located below the outer shell 3
bulges downward to form an oil reservoir chamber 6 in this part, the lower part of the outer shell 3 faces the oil reservoir chamber 6, and a large number of It consists of an open lower part.

What is shown in the figure shows an embodiment in which a combustion plate 1 with a circular cross section is provided on the upper surface of a diffusion chamber 2, and the outer shell 3 is inserted through a through hole 8 provided in the center of the combustion plate 1, and the upper part thereof is inserted into the combustion section. 5, and the lower end of the outer shell 3 is supported on the lower wall 2a of the diffusion chamber 2. The lower peripheral edge of the outer shell 3 is provided with a large number of open lower parts consisting of notches or small holes. The inside of the heating chamber 4 and the inside of the diffusion chamber 2 were communicated through the open lower door.

9 is a combustion air blowing nozzle 1 that communicates with a blower 10 that passes through the central lower wall 2a of the diffusion chamber 2 and faces into the heating chamber 4;
1 is a fuel atomizing device, and the one shown is the blowing nozzle 9.
The figure shows an atomization device using an inverted cone-shaped rotating body that penetrates through the heating chamber 4 and faces into the heating chamber 4. Liquid fuel is supplied to the circumferential surface of the rotating body 11, and the liquid fuel is atomized by the centrifugal force caused by the rotation of the rotating body 11. I tried to make it atomize.

12 is a heater that is embedded in the head of the outer shell 3 constituting the heating chamber 4 and heats the heating chamber 4 prior to combustion; 13 is an oil amount regulator that is interposed in the oil passage that supplies oil to the oil supply nozzle 14; and 15.
is a current plate provided in the diffusion chamber 2.

Next, combustion by this device will be explained. After energizing the auxiliary heater 12 and heating the heating chamber 4, the refueling nozzle 1
4 to the circumferential surface of the rotating body 11, and atomized liquid fuel and combustion air are supplied into the heating chamber 4.

In this case, the atomized liquid fuel is heated in the heating chamber 4, particles become small, and are sent to the diffusion chamber 2 through the open lower along with the combustion air, and then discharged from the combustion section 5. If the particles are ignited, combustion occurs. do.

However, at the beginning of combustion, the temperature of the heating chamber 4 is not sufficient and the temperature of the diffusion chamber 2 is low.

Therefore, a part of the vaporized liquid fuel comes into contact with this, becomes exposed, and accumulates in the oil sump chamber 6 by gravity.

As a result, the opening area of the open lower is reduced by the stored fuel, which reduces the amount of air supplied to the diffusion chamber 2 through the open lower, and the heat supplied through the outer shell 3 gradually causes the oil to become oily. Since the fuel in the reservoir chamber 6 evaporates, a rich gas is obtained at the beginning, which improves ignition and combustion, and the fuel in the oil reservoir chamber 6 gradually evaporates due to the heat supplied through the outer shell 3. As this happens, the condition in which the fuel is blocked by the open lower fuel is eliminated, and combustion gradually shifts to stable combustion.

In this way, according to the present invention, the lower wall 2a of the diffusion chamber 2 located below the outer shell 3 is bulged downward to form an oil reservoir chamber in that part, so that the exposed fuel that liquefies is The exposed fuel collected in the oil sump chamber can be vaporized again by heat supplied from the lower part of the heating chamber facing into the oil sump chamber, and as it comes, the fuel causes one of the open lower parts to be vaporized. As the opening is blocked, a rich gas with good ignitability is obtained in the initial stage, resulting in good ignition and combustion.However, as the combustion progresses, the fuel in the oil reservoir chamber 6 evaporates and closes the opening. It is possible to solve the problem and shift to stable combustion, and there are effects such as being able to burn liquid fuel in a vaporized state, which can completely burn all the fuel from the initial stage of ignition.

[Brief explanation of drawings]

The drawings show an example of the implementation of the present invention, and FIG. 1 is a plan view, and FIG. 2 is a cross-sectional view taken along the line II--II.

Claims (1)

[Scope of utility model registration request] A heating chamber 4 having an outer shell 3 made of a thermally conductive material is provided in a diffusion chamber 2 having a combustion plate 1 on its upper surface, and the upper part of the heating chamber 4 faces the upper surface of the combustion plate 1. Atomized liquid fuel and combustion air are fed into the heating chamber 4 to heat them,
In a type in which liquid fuel is vaporized and then combusted in the combustion section 5 on the upper surface of the combustion plate, the lower wall 2a of the diffusion chamber 2 located below the outer shell 3 is bulged downward to form an oil reservoir chamber. 6, the lower part of the outer shell 3 faces the oil reservoir chamber 6, and a number of open lowers are provided in the outer shell 3 at positions facing the oil reservoir chamber 6.