(19)
(11) EP 2 735 819 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
22.06.2016 Bulletin 2016/25

(43) Date of publication A2:
28.05.2014 Bulletin 2014/22

(21) Application number: 13193564.5

(22) Date of filing: 19.11.2013
(51) International Patent Classification (IPC): 
F25B 13/00(2006.01)
 F25B 40/02(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 26.11.2012 JP 2012257049

(71) Applicant: Panasonic Corporation
Kadoma-shi Osaka 571-8501 (JP)

(72) Inventors:
  • Aoyama, Shigeo
    Osaka, 540-6207 (JP)
  • Isayama, Yasuhiko
    Osaka, 540-6207 (JP)
  • Nishiyama, Yoshitsugu
    Osaka, 540-6207 (JP)

(74) Representative: Eisenführ Speiser 
Patentanwälte Rechtsanwälte PartGmbB Postfach 31 02 60
80102 München
80102 München (DE)

   


(54) Refrigeration cycle apparatus and warm water producing apparatus having refrigeration cycle apparatus


(57) The refrigeration cycle apparatus includes a refrigerant circuit 2, a refrigerant/refrigerant heat exchanger 23 and a control device 4. The refrigerant/refrigerant heat exchanger 23 includes an outer pipe 23a through which high pressure refrigerant flows, and an inner pipe 23b which is disposed in the outer pipe 23a and through which low pressure refrigerant flows. At least a portion of air flowing through the evaporator 25 is induced by the refrigerant/refrigerant heat exchanger 23. Therefore, the high pressure refrigerant is cooled by the air, a supercooling degree of refrigerant is increased, temperature of air flowing into the evaporator 25 is made to rise, and a heat exchanging amount in the evaporator 25 is increased. Therefore, it is possible to enhance energy efficiency.







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