Compressor and compressor housing

摘要

A housing (110) is incorporated as part of a compressor (100) having blades (104) that impart to a fluid a momentum along a main gas flow direction (d) and a swirl. The housing (110) includes a channel (112) that has at least one channel wall (114) and defines an axis (a) substantially aligned with the main gas flow direction (d). The channel (112) is configured to duct at least some of the fluid. The channel wall (114) defines an internal cavity (116) that extends axially within the channel wall (114). A bleed passage (118) connects and provides fluid communication between the channel (112) and the cavity (116). The channel wall (114) defines a plurality of injection passages (120) providing fluid communication between the cavity (116) and the channel (112) at a location spaced in a direction opposite the main gas flow direction (d) from both the bleed passage (118) and the blades (104). The injection passages (120) have a portion configured to direct fluid from the cavity (116) into the channel (112) with a component along the main gas flow direction (d) and a component opposed to the swirl.