FIELD: machine building.
SUBSTANCE: turbo-machine comprising a housing, a rotor assembly containing at least one centrifugal impeller for fluid medium passing from the impeller inlet side to its outlet side, and a seal of the inlet hole extending between the inlet hole of the centrifugal impeller and the housing and designed to prevent fluid medium leakages between the housing and the centrifugal impeller. Said seal has at least the first part located at the inlet side and the last part located at the outlet side of the impeller, herewith the diameter of the last part is less than the one of the first part.
EFFECT: invention is aimed at reducing leakages between the housing and the impeller of turbo-machine.
10 cl, 5 dwg
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