RADIAL-FLOW COMPRESSOR STAGE Russian patent published in 2012 - IPC F04D29/44 F04D29/28 F04D17/08 

FIELD: machine building.

SUBSTANCE: proposed stage comprises impeller, front and rear walls to make flow section of vaneless diffuser, rotary vaned diffuser and straightener blade downstream of impeller wherein every vane of rotary vaned diffuser is made integral with straightener blade so that set of central lines of integrated vanes is located in one plane. Note here that shape of aforesaid walls feature zigzag boundary defining interface between rotary vaned diffuser and straightener blade. Note also that said boundary lines incorporate set of straight lengths, each making a boundary between one of rotary vaned diffuser channels and extending it by straightener blade channel and is perpendicular to plane wherein central lengthwise lines of said channels are located.

EFFECT: higher efficiency of compressor hub.

4 dwg