TURBO-MACHINE CONTAINING COOLING SYSTEM OF LOWER SURFACE OF IMPELLER OF CENTRIFUGAL COMPRESSOR Russian patent published in 2011 - IPC F04D29/58 F01D5/08 F02C7/18 

FIELD: machine building.

SUBSTANCE: turbo-machine consists of unit of diffuser-rectifier (12) set at output of impeller (18) of centrifugal compressor (14) and supplying air into circular combustion chamber (10) and of device (36) of air supply for ventilation of turbine. The unit of the diffuser-rectifier consists of lower circular flange (30) with its lower end connected with devices for supply and together with lower surface (40) of the impeller restricting circular cavity (41) of circulation of air for ventilation withdrawn at an output of the compressor. Device withdrawing part of air volume (92) for ventilation of turbine and device for direction of withdrawn air (83) to radial internal part of lower surface of the impeller are installed on device (36) of supply. Air is circulated radially from inside outside along lower surface of the impeller and is mixed with air withdrawn at output (26) of the compressor for lowering air temperature in circular cavity (41).

EFFECT: raised reliability of machine.

7 cl, 2 dwg