Compressor with variable-geometry ported shroud

摘要

A kind of compressor, having changeable air valve the cover includes that compressor housing (20) limit entrance (22), shield (40) and bypass passageways (30). Variable port extends through shield (40) into bypass channel (30), and be configurable to including the adjustable mechanism property of can choose through between port position at least first and second through to position. In one embodiment, opening (42) extends through on shield (40), which includes in the opening (42) of pass devices (50) setting, and wherein along axially. The axial length of bypass controller device (50) be less than opening (42) so that always be open (42) a part keep it turning on those by pass devices is formed port (50) pass through shield (40). Bypass controller device (50) is axially moveable between at least the first and a second position, makes port first and second through to position.