ADJUSTABLE EJECTOR Russian patent published in 2011 - IPC F04F5/48 

FIELD: machine building.

SUBSTANCE: ejector consists of case of active nozzle, of receiving chamber, of mixing chamber and of a diffuser. The case of adjustable ejector is equipped with supplying branch of active medium supply. In the axial channel of the case there is installed a mechanism of size adjustment consisting of a needle connected with a drive mechanism through a screw pair; the drive mechanism consists of a stepper motor. The mechanism of size adjustment consists of a needle set asymmetrically to an axial channel and connected with the screw pair; the latter is connected to the stepper motor via a coupling. The stepper motor is secured on a flange of a head holder arranged in the axial channel of the case on thread. The mechanism of size adjustment consists of a driving gear connected with the driving gear and the coupling; the mechanism with the coupling is secured on the case with a cantilever.

EFFECT: control over adjustment elements of ejector; simultaneous gradual change of position of three interconnected parameters of ejector subordinate to common algorithm for stable operation of device.

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