Patent ID: 8932036
Filing Date: 2015-01-13
Classification: F04C

Abstract:
1. A compressor comprising: a shell defining a first pressure region and a second pressure region; a first scroll member disposed within said shell and including a first end plate and a first scroll wrap, said first end plate defining a discharge passage in communication with said second pressure region; a second scroll member including a second end plate and a second scroll wrap, said second scroll wrap meshingly engaging said first scroll wrap to define a compression chamber therebetween; and a seal assembly defining a biasing chamber and surrounding said discharge passage and fluidly separating said first and second pressure regions from each other, said biasing chamber containing fluid biasing said first scroll member toward said second scroll member, said seal assembly including a first sealing member and a second sealing member, said first sealing member restricting communication between said biasing chamber and said second pressure region when a first fluid pressure within said second pressure region is higher than a second fluid pressure within said biasing chamber, said first sealing member sealing against said first scroll member when said first fluid pressure is greater than said second fluid pressure, said first sealing member and said first scroll member defining a leakage path therebetween when said first fluid pressure is lower than said second fluid pressure, said second sealing member fluidly separating said biasing chamber and said second pressure region when said first fluid pressure is lower than said second fluid pressure.