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Title:
POSITIVE DISPLACEMENT EXPANDER AND FLUID MACHINERY
Document Type and Number:
Japanese Patent JP2004197640
Kind Code:
A
Abstract:

To suppress efficiency reduction in recovery of power under conditions an actual expansion ratio becomes smaller than a design expansion ratio in a positive displacement expander (60) used in a vapor compression refrigerating cycle etc.

A communication passage (72) is provided, which is branched from an inlet port (37) to an expansion chamber (62) and allowed to communicate with a position for suction/expansion process, and part of high-pressure fluid on the side of inlet into the expansion chamber (62) is allowed to flow into the expansion chamber (62).


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Inventors:
OKAMOTO MASAKAZU
HOKOTANI KATSUMI
KUMAKURA EIJI
OKAMOTO TETSUYA
MORIWAKI MICHIO
Application Number:
JP2002000366495
Publication Date:
July 15, 2004
Filing Date:
December 18, 2002
Export Citation:
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Assignee:
DAIKIN IND LTD
International Classes:
F01C20/00; F01C1/356; F01C1/46; F01C13/04; F01C21/18; F04C18/02; F04C18/32; F04C18/356; F04C18/46; F04C23/00; F04C23/02; F04C29/12; F25B9/06; (IPC1-7): F01C21/12; F01C1/356; F01C1/46; F01C13/04; F04C18/02; F04C18/324; F04C23/02
Attorney, Agent or Firm:
前田 弘
小山 廣毅
竹内 宏
嶋田 高久
竹内 祐二
今江 克実
手島 勝
藤田 篤史



 
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