Backpressure mechanism of scroll type compressor
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United States of America Patent
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Apr 18, 2006
Grant Date -
Dec 1, 2005
app pub date -
May 28, 2004
filing date -
May 28, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A backpressure mechanism for a scroll type compressor to effectively prevent leakage of coolant; a recessed seat being provided at the top of a coolant passage at the center of a fixed scroll; a ring groove being disposed on the outer circumference of the recessed seat; a high-pressure sealing assembly comprised of a high-pressure ring, a sealing device and a high pressure ring seat and a medium-pressure sealing assembly comprised of a medium-pressure ring, a sealing device and a medium-pressure ring seat being respectively provided to the recessed seat and the ring groove; pressure from the compressed coolant causing an axially compromising vacuum unloading function to float the both sealing assemblies.
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