Scroll compressor with partial unloader for start-up
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United States of America Patent
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Mar 25, 2014
Grant Date -
Apr 26, 2012
app pub date -
Oct 21, 2010
filing date -
Oct 21, 2010
priority date (Note) -
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Abstract
A scroll compressor may be provided with a check valve interposed between a balance chamber and a discharge chamber. The check valve may allow balance chamber pressure to remain low during start-up of the compressor. Low balance chamber pressure may allow an orbiting scroll to remain unclamped to a fixed scroll thereby reducing torque required to initiate rotation of the orbiting scroll. After steady-state operational speed is reached the check valve may close and the scrolls may be clamped together to produce a desired steady-state operating condition for the compressor.
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