Scroll-type refrigerator compressor
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United States of America Patent
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Aug 5, 2014
Grant Date -
Dec 29, 2011
app pub date -
Dec 14, 2009
filing date -
Dec 19, 2008
priority date (Note) -
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Abstract
This compressor comprises first and second volutes describing an orbital relative movement and each comprising a plate from which a spiral extends, the two spirals being engaged one inside the other and defining pairs of compression chambers of variable volume. The compressor has a housing formed in that surface of the plate of the first volute which is turned towards the spirals, which housing opens into one of the compression chambers, refrigerant delivery means leading into the housing, and a nonreturn device being mounted in the housing, the nonreturn device preventing communication between the delivery means and the compression chamber into which housing opens in a first or closed position, and allowing communication between the delivery means and said compression chamber in a second or open position.
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