REFRIGERATION CYCLE DEVICE

WIPO Patent Application WO/2010/007730

A1

A refrigeration cycle device is provided with a first compressor (1) which is an expander-integrated compressor and also with a second compressor (2).  A first compression mechanism (11) of the first compressor (1) and a second compression mechanism (21) of the second compressor (21) are arranged parallel to each other in a refrigerant circuit (30).  The refrigeration cycle device is also provided with an injection path (6).  A first electric motor (12) of the first compressor (1), a second electric motor (22) of the second compressor (2), and the degree of opening of the injection valve (6) are controlled by a control means (7).  The control means (7) performs operation for making the degree of opening of the injection valve appropriate.  The operation by the control means (7) causes the degree of opening of the injection valve (61) to approach a totally closed state or a totally open state while maintaining substantially constant the pressure or the temperature of a discharged refrigerant led to a heat dissipater (4) through first piping (3a).

JP5968534	Air-conditioner
JP2001294886	LUBRICANT COMPOSITION FOR REFRIGERATION UNIT USING CARBON DIOXIDE REFRIGERANT, WORKING FLUID, REFRIGERATION CYCLE OR HEAT PUMP CYCLE, AND REFRIGERATION UNIT
JP2009270802	INTERNAL HEAT EXCHANGER

OGATA TAKESHI
HASEGAWA HIROSHI
SHIOTANI YU
YAKUMARU YUICHI
MATSUI MASARU

PCT/JP2009/002810

January 21, 2010

June 19, 2009

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PANASONIC CORP (JP)
OGATA TAKESHI
HASEGAWA HIROSHI
SHIOTANI YU
YAKUMARU YUICHI
MATSUI MASARU

F25B1/00; F25B1/10; F25B11/02; F25B31/00

JP2007132622A	2007-05-31
JP2006189254A	2006-07-20
JP2006153349A	2006-06-15
JP2006023004A	2006-01-26
JP2007132622A	2007-05-31

KAMADA, Koichi et al. (JP)
Koichi Kamata (JP)

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