Two-stage rotary compressor
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United States of America Patent
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Jan 11, 2011
Grant Date -
Feb 5, 2009
app pub date -
Jul 30, 2007
filing date -
Jul 30, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A two-stage rotary compressor having a compression mechanism including a single muffler housing member. The single muffler housing member at least partially defines an intermediate pressure discharge cavity and a discharge pressure discharge cavity. In one exemplary embodiment, the compression mechanism includes a cylinder block having a plurality of vanes positioned within slots formed in an inner cylindrical surface of the cylinder block. The slots are in fluid communication with the discharge pressure discharge cavity and receive discharge pressure working fluid to bias the vanes radially inwardly. In another exemplary embodiment, the cylinder block includes a plurality of passages for the delivery of working fluid to and from the cylinder block.
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