REFRIGERANT COMPRESSOR AND HEAT PUMP DEVICE

WIPO Patent Application WO/2010/143523

A1

The efficiency of a compressor is increased by reducing pressure loss in a discharge muffler space into which a refrigerant compressed by the compression section is discharged. A low-stage discharge muffler space (31) is formed in an annular space extending around a drive shaft (6). A communication-opening flow guide is provided in the low-stage discharge muffler space (31) so as to cover a predetermined area of the opening of a communication opening (34) from the side on which the flow path in the reverse direction is provided, said flow path being one of two flow paths having different flow directions around the drive shaft (6) from a discharge opening (16), from which a refrigerant compressed by a low-stage compression section (10) is discharged, to the communication opening (34). The communication-opening flow guide changes the direction of the flow of the refrigerant to the direction to a communication flow path.

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

PCT/JP2010/058721

December 16, 2010

May 24, 2010

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MITSUBISHI ELECTRIC CORP (JP)
YOKOYAMA TETSUHIDE (JP)
KAWAMURA RAITO (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

JPS5853892U	1983-04-12
JP2009085570A	2009-04-23
JPH07208363A	1995-08-08
JP2000009072A	2000-01-11
JPH04203488A	1992-07-24
JP2005509787A	2005-04-14

See also references of EP 2441961A4
None

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

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