Sealed compressor and refrigeration device
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United States of America Patent
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Issued Date -
Feb 18, 2016
app pub date -
Mar 31, 2014
filing date -
Apr 1, 2013
priority date (Note) -
Published
status (Latency Note)
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Abstract
In a sealed compressor (100) of the present invention, a valve plate (150) is provided with a plurality of discharge holes (151a, 151b) and a plurality of discharge valves (171a, 171b) which open and close the plurality of discharge holes. A tip end surface (160a) of a piston (160) is provided with a plurality of convex portions (161a, 161b), at least tip end portions of which are located inside of the discharge holes (151a, 151b) in a state in which the piston (160) is located at a top dead center. When a plurality of discharge passages (172a, 172b) of the refrigerant gas are defined as spaces formed between convex portion side surfaces (162a, 161b) and discharge hole inner peripheral surfaces (152a, 152b), in a state in which the plurality of convex portions (161a, 161b) are located inside of the plurality of discharge holes (151a, 151b), respectively, the volumes of the plurality of convex portions (161a, 161b) are made different from each other, to make the total cross-sectional areas of the plurality of discharge passages (172a, 172b) different from each other.
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