Title:
MULTI-STAGE COMPRESSION REFRIGERATING DEVICE
Document Type and Number:
WIPO Patent Application WO/2001/022009
Kind Code:
A1
Abstract:
A multi-stage compression refrigerating device, wherein refrigerant delivered from a condenser (1) is divided so as to feed one refrigerant from first decompression means (3) to a first intermediate cooler (6) and the other refrigerant from second decompression means (7) to an evaporator (8), refrigerant flowing into the second decompression means (7) is heat-exchanged with the first intermediate cooler (6), refrigerant delivered from the evaporator (8) is sucked into low stage compression means (32) and, after refrigerant delivered from the first intermediate cooler (6) is merged into the refrigerant delivered from the low stage compression means (32), the merged refrigerant is sucked into high stage compression means (34), the displacement volume of the low stage compression means (32) being set at a value larger than the displacement volume of the high stage compression means (34), a one-way valve (9) allowing refrigerant to flow only from the first intermediate cooler (6) in the direction of a merged point (106) being provided between the first intermediate cooler (6) and the merged point (106), whereby the delivery gas refrigerant temperature of the high stage compression means (34) can be suppressed, and a time required until a circuit is stabilized at the beginning of starting of the refrigerating device can be reduced so as to increase an efficiency.
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Inventors:
TADANO MASAYA (JP)
ODA ATSUSHI (JP)
EBARA TOSHIYUKI (JP)
YAMAKAWA TAKASHI (JP)
ODA ATSUSHI (JP)
EBARA TOSHIYUKI (JP)
YAMAKAWA TAKASHI (JP)
Application Number:
PCT/JP2000/006586
Publication Date:
March 29, 2001
Filing Date:
September 25, 2000
Export Citation:
Assignee:
SANYO ELECTRIC CO (JP)
TADANO MASAYA (JP)
ODA ATSUSHI (JP)
EBARA TOSHIYUKI (JP)
YAMAKAWA TAKASHI (JP)
TADANO MASAYA (JP)
ODA ATSUSHI (JP)
EBARA TOSHIYUKI (JP)
YAMAKAWA TAKASHI (JP)
International Classes:
F25B1/10; F25B5/02; F25B40/00; F04C18/356; F04C23/00; F25B41/04; (IPC1-7): F25B1/10; F25B1/00
Foreign References:
| JPS6325388A | 1988-02-02 | |||
| JPS5121338A | 1976-02-20 | |||
| JPS59118975U | 1984-08-10 |
Other References:
See also references of EP 1215450A4
Attorney, Agent or Firm:
Monda, Makoto (Shinbashi 2-chome Minato-ku Tokyo, JP)
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