COMPRESSOR HOUSING WITH CAVITIES HAVING OPTIMIZED FORM UPSTREAM Russian patent published in 2017 - IPC F04D27/02 F04D29/68 F04D29/52 

FIELD: machine engineering.

SUBSTANCE: housing for a compressor of a turbomachine, which comprises not communicating with each other cavities (5) cut in the thickness of mentioned housing at its inner surface and disposed parallel to each other along the circumference of mentioned housing, herewith mentioned cavities, which have an elongated shape, extending in the warp direction orientation between the two side walls and are closed, respectively upstream and downstream of the front side and the rear side, the intersections of which with the inner surface of the housing ( 4) respectively form an inlet boundary (7) and an output boundary (6) according to the invention the front edge (7) of these cavities (5) has the shape of a wavy line, comprising at least two interlaces along its length included between said side walls.

EFFECT: presence of wavy line promotes mixing of the re-injected air with the primary air stream and thus improves the efficiency and surge margin of stability of the respective compressor stage, using the shell.

9 cl, 5 dwg