FIELD: vacuum building facilities. SUBSTANCE: medium supply channels are connected at input to active medium source and at output, to output section of side surface of nozzle flow-through portion. In other design version, medium supply channels are connected to output section of nozzle side surface, and nozzle, at side of input, is furnished with distributing collector, and is connected to active medium source through this collector. EFFECT: intensification of process of mixing of active and ejecting media. 11 cl, 1 dwg
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