FIELD: machine building.
SUBSTANCE: multistage centrifugal turbo-machine containing a rotor assembly comprising a shaft on which there is the first impeller and the second impeller, a stator, comprising a pass for fluid medium, herewith the said pass comprises a diffuser arranged downward the flow behind the outlet side of the first impeller, a distributor located upward the flow before the inlet side of the second impeller, and a return channel connecting the diffuser and the distributor. In the distributor there are stator blades, and part of the distributor is limited by the first impeller while the said stator blades are arranged, at least partially, in the said part of the distributor.
EFFECT: invention is aimed at increase of compressor efficiency factor.
8 cl, 3 dwg
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