To compose a circuit minimizing power recovery loss while matching flow rate to work by using an expansion machine of a simple structure type although a complicated expansion ratio control means is required since an expansion machine requiring valve opening/closing control such as a reciprocating type is used coaxially with a compressor in the past, in a supercritical cycle refrigerating air conditioning device.
The circuit is composed to reduce a non-recovery potion of expansion power of flow rate matching by driving a second compressor separate from a main compressor by recovery power of the expansion machine, to prevent the circuit from being complicated for a reverse flow in changing over cooling/heating, and to optimize efficiency of a cycle by intermediate cooling or the like by a two-way expansion machine or a second gas cooler.
COPYRIGHT: (C)2008,JPO&INPIT
| JP5764734 | Refrigerator |
| JP2010121801 | METHOD OF CONTROLLING AIR CONDITIONER, AND AIR CONDITIONER |
UNEZAKI FUMITAKE
WAKAMOTO SHINICHI
MURAKAMI TAIJO
Tadahiko Inaba
Kanako Murakami
Nakatsuru Kazutaka
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