Title:
COMPOSITE DUAL REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2013/151005
Kind Code:
A1
Abstract:
Provided is a composite dual refrigeration cycle device provided with: two high-temperature side refrigeration circuits respectively having water/refrigerant heat exchangers for heat exchange of water and a refrigerant discharged from a compressor on the high-temperature side, and two low-temperature side refrigeration circuits respectively having evaporators comprising air heat exchangers having blower fans, the circuits being built into the same chassis; and with hot water lines configured to permit heat exchange from the respective high-temperature side refrigeration circuits to the respective low-temperature side refrigeration circuits by a cascade heat exchanger, for circulating cold water or hot water to the cold water-side flow channel of the water/refrigerant heat exchangers of the high-temperature side refrigeration circuits, the interior of the chassis being furnished with a control device for overall control of operation of the device. The composite dual refrigeration cycle device is characterized in that the device is configured such that the two low-temperature side refrigeration circuits are connected to the control device, and when one of the low-temperature side refrigeration circuits performs a defrosting operation of the evaporator thereof, the other low-temperature side refrigeration circuit is controlled so as to perform heat exchange with the cascade heat exchanger, while the rotation speed of the blower fan of the other low-temperature side refrigeration circuit is controlled to a rotation speed higher than the rotation speed of the blower fan during a heating operation of both of the low-temperature side refrigeration circuits together.
Inventors:
TANNO HIDEKI
YAMAMOTO MANABU
MORITA TAKERU
YAMAMOTO MANABU
MORITA TAKERU
Application Number:
PCT/JP2013/059912
Publication Date:
October 10, 2013
Filing Date:
April 01, 2013
Export Citation:
Assignee:
TOSHIBA CARRIER CORP (JP)
International Classes:
F25B47/02; F25B1/00; F25B7/00; F25B39/00
Foreign References:
| JP2007198693A | 2007-08-09 | |||
| JP2001280734A | 2001-10-10 | |||
| CN101210748A | 2008-07-02 | |||
| JPH02583U | 1990-01-05 | |||
| JP2005282869A | 2005-10-13 | |||
| JPH09269155A | 1997-10-14 |
Attorney, Agent or Firm:
TOKYO INTERNATIONAL PATENT FIRM (JP)
Patent business corporation Tokyo international patent firm (JP)
Patent business corporation Tokyo international patent firm (JP)
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