RU1780845C - Supersonic sprayer - Google Patents

Description

the liquid through the valve 5 through channels 6 is connected to the Laval 2 sickle-shaped nozzle 2, to which the compressed gas supply channel 7, which also passes to the Laval nozzle, is also connected. The gas compression ratio is adjusted by gear 8.

To change the position of the spray gun, a tripod 9 is pivotally attached to the body 1, and a handle 10 serves to control the nozzle.

Ultrasonic atomizer operates as follows.

The compressed gas, the pressure of which is regulated by the pressure regulator 8, is fed through the channel 7 to the throat 3 of the Laval 2 sickle-shaped nozzle and, passing through it, is accelerated. The liquid through the channels 6 from the tank 4 enters the supersonic part of the nozzle and mixes with the gas.

In an example of a specific implementation of a supersonic atomizer, the following characteristics are optimal (Fig. 2):

b 0.35 I

FKp / Fa 0.69

GKJ4 °

where b is the distance from the critical section to the liquid supply section;

Ркр is the critical sectional area of the nozzle;

Fa is the nozzle exit sectional area;

I is the length of the supersonic part of the nozzle;

"- nozzle expansion angle;

hl is the width of the critical section.

The sickle shape of the nozzle provides an increased degree of dispersion of the sprayed liquid and provides a 15-18% increased range of the mixed jet.

Claims (1)

The claims A supersonic atomizer comprising a casing with a gas supply channel passing into the Laval nozzle and a fluid supply channel in communication with the supersonic part of the Laval nozzle, characterized in that, in order to increase efficiency by increasing the range of the spray nozzle, the Laval nozzle is made in a crescent-shaped section. FIG. 2