NOZZLE HEAD Russian patent published in 2015 - IPC B05B1/00 

FIELD: machine building.

SUBSTANCE: invention relates to devices to speed up a gas-dynamic (compressible) flow to supersonic velocities in different spheres of technical activities (sand blasters, vacuum cleaners, dust extractors, gas catchers, phase separators, oil cracking etc. equipment for chemical industry and household appliances). At least one nozzle in the nozzle head is made as a tapering part with critical section. The critical section enters the expanding part with a gap communicated with a cavity. The expanding part is set inside the nozzle head starting from the first to the last but one nozzle, in the form of an expanding shell. At the nozzle head outlet in the last nozzle the expanding part is made as an expanding shell or a concave or convex lip.

EFFECT: reduced power consumption in start-up and operation modes, provision for more stable operation mode, expanded range of application.

4 cl, 5 dwg