Variable-capacity scroll-type compressor

This application is entitled to the benefit of French Patent Application No. 01.12535 filed on Sep. 28, 2001 in the name of Danfoss Maneurop S. A. In a compressor at least one bypass valve is arranged in a low-pressure zone inside a casing of the compressor. The bypass valve defines a chamber connec...

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Main Authors Ancel, Christophe, Rosson, Yves, De Bernardi, Jean
Format Patent
LanguageEnglish
Published 06.04.2004
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Summary:This application is entitled to the benefit of French Patent Application No. 01.12535 filed on Sep. 28, 2001 in the name of Danfoss Maneurop S. A. In a compressor at least one bypass valve is arranged in a low-pressure zone inside a casing of the compressor. The bypass valve defines a chamber connected by a first duct to at least one compression pocket situated in the peripheral zone of the compression stage and by a second duct to the low-pressure zone, the two ducts opening near one another so that they can be shut off by a shutter which can move in the chamber, being guided by the walls that delimit this chamber, a third duct intended for conveying a shutter-control fluid opening into the lower wall of the chamber of the valve. The shutter is opened by gravity when no control fluid is applied.