AIR-EJECTING VACUUM PUMP Russian patent published in 1997 - IPC

FIELD: fluidics. SUBSTANCE: housing is made up as a flange from the outer side of which are branch pipes for active and passive fluids as well as exhaust branch pipe. From the inner side the housing is provided with active fluid nozzle that consists of inlet contraction, throat, diffuser, and exit. At the exit of the active nozzle, from outside, is a cone. In addition, from the inner surface of the housing is a bushing with an inner thread that allows the ejector to be screwed in. The ejector has outer thread in the zone of the active nozzle. From the outer side of the bushing is silencer made up as a sleeve with openings. The silencer and ejectors are mounted inside a cylindric casing connected to the housing via screws. EFFECT: enhanced efficiency. 3 cl, 1 dwg