(19)
(11) EP 2 320 165 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
25.02.2015 Bulletin 2015/09

(43) Date of publication A2:
11.05.2011 Bulletin 2011/19

(21) Application number: 10186452.8

(22) Date of filing: 04.10.2010
(51) International Patent Classification (IPC): 
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: 05.10.2009 JP 2009231659

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

(72) Inventors:
  • Moriwaki, Shunji
    Osaka 540-6207 (JP)
  • Aoyama, Shigeo
    Osaka 540-6207 (JP)
  • Okaza, Noriho
    Osaka 540-6207 (JP)
  • Isayama, Yasuhiko
    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 hot water heater


(57) A refrigeration cycle apparatus 1A includes: a refrigerant circuit 2 provided with a subcooling heat exchanger 23; a bypass passage 3 extending through the subcooling heat exchanger 23; and a controller 4 for controlling a main expansion means 24 in the refrigerant circuit 2 and a bypass expansion means 31 in the bypass passage 3. The bypass expansion means 31 is controlled so that a bypass side outlet temperature conforms to a saturation temperature at a pressure of a refrigerant to be drawn into a compressor 21, and a degree of superheat at an outlet of an evaporator 25 calculated based on an evaporator outlet temperature is equal to or lower than a predetermined degree of superheat.







Search report









Search report