JPS5827224Y2 - liquid fuel combustor - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improved structure of a combustor that gasifies and burns liquid fuel such as kerosene.

Generally, when the fuel is scattered from the scattering plate of the rotary atomizer toward the inner wall of the burner chamber, surface tension acts and the fuel is scattered as relatively large particles.

As a result, even if the temperature of the burner chamber wall was sufficiently high, it was not completely gasified, and coarse particulate fuel flew out of the flame port, causing red flame combustion and soot generation, causing unstable combustion.

The present invention was devised in view of this point, and will be explained below with reference to the drawings. 1 is a burner attached to a partition plate 3 of a burner case 2, a combustion air port 4 is provided at the bottom, and a sheathed heater 5 for vaporization is installed on the side wall. It is composed of a burner body 6 buried therein and a head 8 having slit-shaped flame ports 1, 7, . . . that cover the front opening of the burner body 6.

By fixing this burner case 2 to the side wall of the combustion chamber 9, the lower flame of the burner 1 is fixed.

7... are made to look into the combustion chamber 9.

10 is a rotating atomizer installed in the burner 1, and a cone 10
The rotary shaft 12 of the motor 11 consists of a1 scattering plates 10b1 stirring blades 10c, and is inserted in this order from the combustion air port 4.
installed on.

13 is an intake fan provided in the ventilation chamber 14, and is attached to one rotating shaft 15 of the motor 11.

16 is a fuel supply pipe placed oppositely on the cone 10a, which supplies a certain amount of liquid fuel from a tank to the cone 10a (not shown).
It is to be dropped onto 0a.

In the present invention, the outer peripheral edge of the scattering plate 10b of the atomizer 10 is inclined toward the downstream side of the combustion air, and the outer peripheral edge of the surface on the upstream side of the combustion air has narrow grooves 17, 17 radially.
It forms the

In this case, the liquid fuel dripped onto the cone 10a from the supply pipe 16 is scattered from the outer periphery of the rotating scattering plate 10b toward the inner wall of the burner 1 by the action of centrifugal force, and when it collides with the inner wall of the burner. Combustion air that is vaporized by the heat of the burner 1 and sucked into this vaporized gas from the intake fan 713 is supplied into the burner 1 from the combustion air port 4 and mixed with the stirring blade IQ.
c, the air-fuel mixture is mixed uniformly by the flame lower, 7.
It is injected from ... and burns with blue flame.

However, in this case, when the fuel is scattered from the scattering plate 10b, it is divided into fine grooves 17, 17, etc., so it is difficult to be affected by surface tension when it leaves the scattering plate 10b, and therefore it becomes fine particles. It is easily scattered and becomes gas.

Moreover, the scattering plate 10b on the side provided with the narrow grooves 17, 17...
Since the outer peripheral edge of the groove is inclined toward the downstream side of the combustion air, the narrow groove 1
7, 17... can be reduced, and the fuel that has entered the respective narrow grooves 17, 17... and been separated is refocused under the influence of the flow of combustion air. Therefore, it is possible to scatter the particles uniformly over the entire circumference of the scattering plate 10b.

Therefore, in the present invention, there is no red flame combustion and stable combustion can be achieved.

Furthermore, since it is easy to gasify, it has the effect of reducing the capacity of the vaporizing heater and, by extension, shortening the ignition time.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a main part of the liquid fuel combustor of the present invention, FIG. 2 is a plan view of a scattering plate used in the present invention, and FIG. 3 is an enlarged sectional view of the main part. DESCRIPTION OF SYMBOLS 10... Rotating atomizer, 10a... Cone, 10b... Scattering plate, 1... Burner, 17... Thin groove.

Claims (1)

[Scope of utility model registration request] A rotary atomizer consisting of a cone and a scattering plate is housed in a burner equipped with a flame port and a vaporization heater, and liquid fuel is dropped onto the cone and scattered from the scattering plate toward the inner wall of the burner, and combustion air is sent to the burner. In the device in which the combustion air is supplied from behind the scattering plate, the outer peripheral edge of the scattering plate is inclined toward the downstream side of the combustion air, and thin grooves are formed in the radial direction on the outer peripheral edge of the surface on the upstream side of the combustion air. Liquid fuel combustor.