Compressor seal assembly

摘要

A compressor may include a shell, first and second scroll members, and a seal assembly. The shell defines a first and second pressure regions. The first scroll member may include a first end plate defining a chamber. The seal assembly may surround the discharge passage and fluidly separate the first and second pressure regions from each other. The seal assembly may include first and second sealing members. The first sealing member may prevent communication between the chamber and the second pressure region when a first fluid pressure within the second pressure region is higher than a second fluid pressure within the chamber. The first sealing member may define a leakage path when the first fluid pressure is lower than the second fluid pressure. The second sealing member may fluidly separate the chamber and the second pressure region when the first fluid pressure is lower than the second fluid pressure.

主权项

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.