Title:
HEAT PUMP CYCLE
Document Type and Number:
WIPO Patent Application WO/2013/084463
Kind Code:
A1
Abstract:
A heat pump cycle (2) is provided with a refrigerant circuit (10) and a cooling water circuit (40). A heat exchanger 70 and a heat exchanger 80 are disposed between the refrigerant circuit (10) and the cooling water circuit (40). The heat exchanger 70 is provided with an outdoor heat exchanger (16) that functions as an evaporator in a heating operation, and a radiator (43) for dissipating heat in cooling water. The heat exchanger 80 transfers heat in a high-pressure refrigerant to the cooling water in a heating operation. The temperature of the refrigerant in the heat exchanger 80 is higher than the temperature of the refrigerant in the heat exchanger 70. The heat obtained from the heat exchanger 80 is supplied to the heat exchanger 70 via the cooling water. Frost formation is thus minimized. Furthermore, heat obtained from the heat exchanger 80 is stored in the cooling water. In a defrosting operation, cooling water in which heat is stored is supplied to the heat exchanger 70. A sufficient amount of heat for defrosting is thus obtained.
Inventors:
KATOH YOSHIKI (JP)
SAKAMOTO KOTA (JP)
KAMI YUUICHI (JP)
SAKAMOTO KOTA (JP)
KAMI YUUICHI (JP)
Application Number:
PCT/JP2012/007736
Publication Date:
June 13, 2013
Filing Date:
December 03, 2012
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
F25B1/00; F25B47/02; F28F9/02; F28F9/26
Domestic Patent References:
| WO1998015420A1 | 1998-04-16 |
Foreign References:
| JP2000062446A | 2000-02-29 | |||
| JP2005289095A | 2005-10-20 | |||
| JP2011031876A | 2011-02-17 | |||
| JPH06337186A | 1994-12-06 | |||
| JP2008151396A | 2008-07-03 |
Attorney, Agent or Firm:
KIN, Junhi (JP)
Gold Junki (JP)
Gold Junki (JP)
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Claims: