REFRIGERANT COMPRESSOR AND HEAT PUMP DEVICE

WIPO Patent Application WO/2010/143522

A1

The efficiency of a compressor is increased by reducing pressure losses at an intermediate connection section for a multiple-stage compressor and in a discharge muffler space in a single-stage twin compressor, etc. Two connection flow paths for connecting to each other a high-stage compression section (20) and a discharge muffler space (31), into which a refrigerant compressed by a low-stage compression section (10) is discharged, are provided so as to penetrate through a low-stage compression section (10). The discharge muffler space (31) is formed in an annular shape, and a communication opening of the connection flow path, said communication opening communicating with the discharge muffler space (31), is disposed on one side of the discharge muffler space (31), and as a result, the refrigerant is circulated in the annular low-stage discharge muffler space (31) in a fixed direction.

KAWAMURA RAITO (JP)
YOKOYAMA TETSUHIDE (JP)
SASAKI KEI (JP)
SEKIYA SHIN (JP)
KATO TARO (JP)
TANI MASAO (JP)
FUKAYA ATSUYOSHI (JP)
FUSHIKI TAKESHI (JP)

PCT/JP2010/058720

December 16, 2010

May 24, 2010

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MITSUBISHI ELECTRIC CORP (JP)
KAWAMURA RAITO (JP)
YOKOYAMA TETSUHIDE (JP)
SASAKI KEI (JP)
SEKIYA SHIN (JP)
KATO TARO (JP)
TANI MASAO (JP)
FUKAYA ATSUYOSHI (JP)
FUSHIKI TAKESHI (JP)

F04C29/06; F04C23/00; F04C29/12

JP2007113542A	2007-05-10
JPS60171988U	1985-11-14
JPH05195976A	1993-08-06
JP2006083841A	2006-03-30
JPS5853892U	1983-04-12
JP2007120354A	2007-05-17
JPH04342896A	1992-11-30
JPH05312166A	1993-11-22
JP2010048089A	2010-03-04

MIZOI, Shoji et al. (JP)
Shoji Mizoi (JP)

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