Patent ID: 9494157
Filing Date: 2016-11-15
CPC Classification: F04C

Claim Text:
1. A compressor comprising: a shell assembly; a first scroll member disposed within said shell assembly, said first scroll member including a first end plate defining a discharge port and a first port and having a first spiral wrap extending from a first side thereof; a second scroll member disposed within said shell assembly and including a second end plate defining a second port and having a second spiral wrap extending therefrom and meshingly engaged with said first spiral wrap to form a suction-pressure pocket in fluid communication with a suction-pressure region disposed outside of said first and second spiral wraps, intermediate-pressure pockets, and a discharge-pressure pocket in fluid communication with a discharge-pressure region disposed outside of said first and second spiral wraps, a first of said intermediate-pressure pockets being in fluid communication with said first port and a second of said intermediate-pressure pockets being in fluid communication with said second port; a motor assembly driving relative orbital motion between said first and second scroll members; a first valve assembly located within said shell assembly and in fluid communication with said first port, said first valve assembly displaceable between open and closed positions to selectively provide communication between said first intermediate-pressure pocket and said suction-pressure region via said first port; and a second valve assembly located within said shell assembly and in fluid communication with said second port, said second valve assembly displaceable between open and closed positions to selectively provide communication between said second intermediate-pressure pocket and said discharge-pressure region via said second port.