COMPRESSOR FOR REPEATED AIR PUMPING; TURBOMACHINE Russian patent published in 2013 - IPC F01D17/16 F04D29/56 F01D9/02 

FIELD: machine building.

SUBSTANCE: compressor includes a housing containing compression stages with an impeller in each of them. Inlet stator located before the first stage includes blades with an adjustable inclination angle and rotation axes passing through the housing, and a repeated air pumping circuit. Repeated air pumping circuit includes spray holes passing through some blades of inlet stator and opening to inner part near their rotation axes at the compressor inlet. Holes are opened to incoming flow of compressor at a tangent to the housing. Each stationary blade includes a base of round shape with rotation axes projecting outwards from its centre. Base is arranged in a seat in external casing of the housing, and the above spray holes pass at an angle through the base. In external casing of the housing there is a hole opening to a ring-shaped cavity passing around the rotation axis and formed radially to external surface of inlet stator, external casing of the housing, a flat ring-shaped gasket and a bushing forming a bearing of the rotation axis. The hole passes between ring-shaped cavity and inner part of the housing. The other invention of the group refers to turbomachine containing the above compressor.

EFFECT: inventions allow increasing the efficiency of turbomachine compressor.

6 cl, 8 dwg