Patent ID: 8790098
Filing Date: 2014-07-29
Classification: F04C

Abstract:
1. A compressor comprising: a housing; a first scroll member positioned within said housing, having a first spiral wrap extending therefrom and including a first end plate portion coupled to a second end plate portion, said first end plate portion and said second end plate portion defining a discharge passage; a second scroll member positioned within said housing and including a second spiral wrap engaged with said first spiral wrap; and a valve assembly supported by at least one of said first end plate portion and said second end plate portion at a location radially outward from said discharge passage and in communication with said discharge passage via a passage, said valve assembly forming a variable volume ratio valve assembly; wherein said second end plate portion defines a first variable volume ratio passage in communication with a first pocket formed by said first and second spiral wraps and said variable volume ratio valve assembly includes a first variable volume ratio valve overlying said first variable volume ratio passage and displaceable between open and closed positions, said first variable volume ratio passage providing communication between said first pocket and said discharge passage when said first variable volume ratio valve is in the open position and said first variable volume ratio passage being isolated from said discharge passage when said first variable volume ratio valve is in the closed position; and wherein said second end plate portion defines a second variable volume ratio passage in communication with a second pocket formed by said first and second spiral wraps and said variable volume ratio valve assembly includes a second variable volume ratio valve overlying said second variable volume ratio passage and displaceable between open and closed positions independently from said first variable volume ratio valve, said second variable volume ratio passage providing communication between said second pocket and said discharge passage when said second variable volume ratio valve is in the open position and said second variable volume ratio passage being isolated from said discharge passage when said second variable volume ratio valve is in the closed position.