JPS6343142B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an atomizing device for liquid fuel, etc., in a combustion device installed in a hot air heater, for example, and a device for atomizing liquid fuel, etc. between an atomizing chamber for supplying liquid and a gas/liquid mixing chamber. The narrow flow path provided is intended to further refine each particle of the atomized material supplied into the gas/liquid mixing chamber.

FIG. 1 shows a conventional example of a device for atomizing fuel such as kerosene in a combustion device installed in a hot air heater. In this figure, 1 is a truncated cone-shaped centrifugal atomizing cone-shaped rotating body (hereinafter simply referred to as the rotating body) that applies centrifugal force to the liquid fuel supplied to its surface to atomize it, and 2 is this rotating body. A motor drives the body 1, and these are connected by a horizontal drive shaft 3. 4 is a fuel supply pipe that supplies liquid fuel in a dripping state to the surface of the tapered part of the rotating body 1; 5 is a stirring blade fixed to the protruding shaft on the side opposite to the tapered part of the rotating body 1 with a nut 6; and 7 is a rotating mechanism for these. It is a cylindrical outer shell for receiving on its inner circumferential surface fine particles of liquid fuel atomized by the rotation of the body 1 and stirring blades 5 and vaporizing the particles, and a heater H is embedded therein. 8 is a burner flame port provided at the outlet side opening 7b of the outer shell cylindrical body 7, and 7a is an inlet side opening of the outer shell cylindrical body 7, through which primary air flows.

In the above configuration, the fuel sent through the fuel supply pipe 4 ascends the tapered part while being applied with centrifugal force on the rotating body 1, and scatters from the end thereof in the form of fine particles to form the outer shell cylindrical body 7. It is received on the inner peripheral surface of
After being vaporized by the buried heater H and mixed with the inflowing primary air by the stirring blade 5, it is appropriately ignited in the burner flame port 8 and the desired amount is delivered to the outlet side opening 7b of the outer shell cylindrical body 7. form a flame.

However, in the conventional atomization device described above, the atomization effect depends on the rotation speed of the rotating body 1 and the stirring blade 5, and therefore, when the rotation speed is low and sufficient primary air flow velocity cannot be obtained. However, this method had the disadvantage that it could not be expected to make the fuel liquid into fine particles, and it produced an odor due to difficulty in ignition.

In consideration of the above points, this invention aims to make particles of fuel liquid separated from a rotating body finer by colliding them with a high-speed flow of inflowing primary air and ejecting them into an air/liquid mixing chamber through a narrow channel. , which solves the above-mentioned conventional problems. This invention will be explained below.

FIG. 2 is a sectional view showing an embodiment of the present invention. 1 to 8 in the figure are the same as those shown in FIG. The inside of the shell cylindrical body 7 is divided into an atomization chamber A on the inlet side and a gas/liquid mixing chamber B on the outlet side. A stirring blade 5 is positioned within the mixing chamber B, and a narrow flow path 10 for inflowing primary air is formed between the inner circumferential surface of the annular partition wall 9 and the outer circumferential surface of the rotating body 1.

Therefore, in the atomizing device of the present invention having the above-mentioned configuration, the fine particles of the fuel liquid scattered by the centrifugal force applied to the tapered portion of the rotating body 1 collide with the high-speed flow of the inflowing primary air, while passing through the narrowed flow path 10. pass through,
It is ejected into the gas/liquid mixing chamber B along with the accelerated air flow, mixed by the stirring blade 5 in a diffused state, collides with the inner peripheral surface of the outer shell cylindrical body 7, and is vaporized by the buried heater H. It turns out.

FIG. 3 shows another embodiment of the present invention in which the shape of the rotating body 1 and the opening position of the fuel supply pipe 4 are different, but in this case as well, the formation of the narrow flow path 10 for the inflowing primary air is different. In this way, the scattered particulate fuel is also made finer.

In the above embodiment, the particulate fuel is finally vaporized by the heater H embedded in the outer shell cylindrical body 7, but this heater H is not necessarily necessary, and the final atomized gas and This may be burned in the liquid mixed state.

In addition, in the above explanation, the combustion equipment of a warm air heater is used as an example, and therefore the fuel is atomized or vaporized, but the same applies not only to fuel but also to devices that atomize or vaporize liquids in general. Of course, it can be used.

As described above, the present invention has the advantage that the atomization efficiency can be improved by a simple configuration in which a narrow flow path is formed in the outer cylindrical body.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a conventional atomizing device, FIG. 2 is a sectional view showing one embodiment of the present invention, and FIG. 3 is a sectional view showing another embodiment of the invention. In the figure, 1 is a rotating body, 7 is a cylindrical outer shell, 9 is an annular partition wall, 10 is a narrow flow path, A is an atomization chamber on the inlet side, and B is a gas/liquid mixing chamber on the outlet side. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Claims] 1. An atomization chamber on the inlet side that is equipped with a cone-shaped rotating body for centrifugal atomization that supplies the liquid to be atomized to the surface taper part, and a stirring blade that works together with the cone-shaped rotating body for centrifugal atomization. A partition wall defining the two chambers is protruded in an annular shape within an outer shell cylindrical body in which gas/liquid mixing chambers are formed on the front and rear sides of the outlet side, and the protruding portion is connected to the centrifugal atomization chamber. a cone-shaped rotating body for use at a predetermined interval close to the outer circumferential surface of the cone-shaped rotating body, and the atomized fine particles generated in the atomization chamber are ejected into the rear air-liquid mixing chamber together with the air supplied to the atomization chamber; A liquid atomization device characterized by forming a flow path.