(19)
(11) EP 1 564 506 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
30.05.2007 Bulletin 2007/22

(43) Date of publication A2:
17.08.2005 Bulletin 2005/33

(21) Application number: 05250429.7

(22) Date of filing: 27.01.2005
(51) International Patent Classification (IPC): 
F25B 9/00(2006.01)
F25B 29/00(2006.01)
F25D 23/06(2006.01)
 F25B 5/02(2006.01)
F25B 41/04(2006.01)
F25D 11/02(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR LV MK YU

(30) Priority: 12.02.2004 JP 2004035409
12.02.2004 JP 2004035411

(71) Applicant: SANYO ELECTRIC CO., LTD.
Moriguchi-shi, Osaka-fu 570-8677 (JP)

(72) Inventors:
  • Matsumoto, Kenzo
    Ora-gun Gunma-ken (JP)
  • Watabe, Yoshio
    Nitta-gun Gunma-ken (JP)
  • Nishikawa, Hiroshi
    Tatebayashi-shi Gunma-ken (JP)

(74) Representative: Grey, Ian Michael 
Venner, Shipley & Co., 20 Little Britain
London EC1A 7DH
London EC1A 7DH (GB)

   


(54) Heating/cooling system


(57) An object is to provide a heating/cooling system (100) capable of achieving reduction of power consumption, and enhancement of performance in a heating/cooling system usable in such a manner as to be switched to be hot/cold. The heating/cooling system having a storage chamber (1) usable in such a manner as to be switched to be hot/cold, comprises: a refrigerant circuit (10) comprising a compressor (11), a gas cooler (12), a pressure reducing device (16), an evaporator (17) and the like, containing carbon dioxide sealed as a refrigerant therein, and having a supercritical pressure on a high-pressure side; a radiator (14) through which the refrigerant flowing out of the gas cooler (12) flows before entering the pressure reducing device (16); and an air blower (22) which sends air through the gas cooler (12), the inside of the storage chamber (1) is heated by the radiator (14), the inside of the storage chamber (1) is cooled by the evaporator (17), and the air blower (22) is stopped in a case where the inside of the storage chamber (1) is heated by the radiator (14).







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