SU742671A1 - Injector - Google Patents

Description

one

The invention relates to a device for spraying liquid fuel and can be used in furnaces.

The closest technical solution to the proposed design is an injector, comprising a housing with a fuel channel, an outlet nozzle and a twisting chamber connected to the fuel channel narrowing downstream with side tangential channels 1.

The disadvantage of this design is the small life of the nozzle and the low quality of atomization.

The purpose of the invention is to increase the service life and improve the quality of atomization.

This is achieved by the fact that the ratio of the depth of the twisting chamber to the depth of the tangential channels is 1.0-1.5, and the narrowing angle of the tangential channels is determined by the formula

and arccos- V: - 2 °

where a is the angle of contraction of the tangential channels;

n is the number of tangential channels;

fe is the width of the tangential channels;

h (is the depth of the tangential channels;

Go is the radius of the twisting chamber;

ho - swirl chamber depth.

FIG. 1 shows a nozzle, a longitudinal section; in fig. 2 is a section A-A in FIG. one.

The nozzle includes a housing 1 with a fuel channel 2, a nozzle 3, a twisting chamber 4 and side tangential channels 5, the walls of which are narrowed at an angle a defined by the formula

nghi

Go-In

a arccos-I --- arctg -, -

The ratio of the twist chamber depth to the depth of the tangential channels is 1.0-1.5.

The nozzle works as follows.

The fuel under pressure through the fuel channel 2 of the housing 1 enters the lateral tangential channels 5, whose walls taper at an angle a, which provides better conditions for the fuel to enter the chamber.

Claims (1)

Claim Injector, comprising a housing with a fuel conduit, the chamber and an outlet nozzle ¹⁰ swarm twisting connected to the fuel channel by a tapering downstream side of the tangential channels, characterized in that, in order to increase and improve the service life of the Ka-operation _1S sawing depth ratio swirl chambers to the depth tangential where a is the angle of narrowing of the tangential channels; η is the number of tangential channels; & - width of tangential channels; h _{t —} depth of tangential channels; th is the radius of the swirl chamber; h ₀ is the depth of the swirl chamber.