Scroll refrigeration compressor with a delivery valve and a bypass valve
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United States of America Patent
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Nov 24, 2015
Grant Date -
Apr 11, 2013
app pub date -
May 16, 2011
filing date -
Jun 2, 2010
priority date (Note) -
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Abstract
A compressor including: a stationary volute and a moving volute each including a plate provided with a scroll, said scrolls defining variable-volume compression chambers; a delivery line provided in the plate of the stationary volute; a delivery port arranged such as to establish a communication between the delivery line and a delivery chamber; and a non-return device including (i) a valve seat surrounding the delivery port and (ii) a delivery valve which can move between delivery port opening and closing positions. The compressor includes: at least one bypass passage having a first end opening into the delivery line at a point between the central compression chamber and the valve seat and a second end opening into an intermediate compression chamber or into a low-pressure portion of the compressor, and at least one bypass valve which can move between bypass passage closing and opening positions.
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