Patent ID: 8529232
Filing Date: 2013-09-10
Classification: F04C

Abstract:
1. A compressor comprising: a first scroll member including a first end plate and a first spiral wrap extending from said first end plate; a second scroll member including a second end plate and a second spiral wrap extending from said second end plate and engaged with said first spiral wrap to form compression pockets, said second end plate including a first aperture extending therethrough and in communication with a first of said compression pockets; a structure supporting said second scroll member for orbital movement relative to said first scroll member and including a first recess generally aligned with said first aperture, and first and second passages in communication with said first recess, said first passage in communication with a vapor source forming a vapor injection system; and a first piston located within said first recess and axially displaceable between first and second positions, said first piston isolating said first passage from communication with said second passage when in the first and second positions, said first piston preventing communication between said first aperture and said first passage when in the first position, and said first piston providing communication between said first aperture and said first passage when in the second position.