Particle separator and separating method for gas turbine engine

摘要

A system and method for particle separation in a gas turbine engine centrifugal impeller (20) bleed air system using a tangential velocity component of the compressor bleed air to centrifuge the particles radially outwardly and convey the particles circumferentially, away from a clean air outlet (50) and towards a particle outlet (54) where the particles are extracted from the bleed air. Bleed air apertures (42) lead air from flow path (34) into a cavity (38) having the clean air and particle outlets (50,54). A baffle (52) separates the apertures (42) from the clean air outlet (50).