SCROLL-TYPE FLUID MACHINE

WIPO Patent Application WO/2010/092813

A1

Disclosed is a scroll type fluid machine which can efficiently raise the heat-exchange efficiency of a refrigeration cycle through a simple and efficient lubricating oil circulation means. The machine is provided with a scroll unit (8); a frame (16), which is fixed to a sealed container (2), and which supports a drive shaft (4) such that said drive shaft (4) is rotatable, and which also supports a mobile scroll (44) such that said mobile scroll (44) may move in an orbiting fashion; a lubricating oil chamber (64) provided in the sealed container (2) at an end of the drive shaft (4), and where lubricating oil acted on by the high pressure side pressure of the working fluid accumulates; a back pressure chamber (88) formed between the frame and the back surface (44a) of the mobile scroll, and which presses the mobile scroll against a fixed scroll (46) through back pressure generated by means of lubricating oil being supplied from the lubricating oil chamber; a valve chamber (122) provided on the fixed scroll, and which is connected to the back pressure chamber; a lubricating oil circulation means (98), which has a circulation path (100) connecting the valve chamber to the lubricating oil chamber; and a valve mechanism (126) provided in the valve chamber, and which opens and closes the circulation path in response to the pressure in the back pressure chamber.

TAKABE TETSUYA (JP)
OOTANI HISASHI (JP)

PCT/JP2010/000852

August 19, 2010

February 12, 2010

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SANDEN CORP (JP)
TAKABE TETSUYA (JP)
OOTANI HISASHI (JP)

F01C1/02; F01C13/04; F01C21/04; F04C23/02; F04C29/02

JP2007154805A	2007-06-21
JP2008088854A	2008-04-17
JP2007315227A	2007-12-06
JP2007239575A	2007-09-20
JP2006220143A	2006-08-24

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