(19)
(11) EP 2 647 926 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
29.07.2015 Bulletin 2015/31

(43) Date of publication A2:
09.10.2013 Bulletin 2013/41

(21) Application number: 13166593.7

(22) Date of filing: 20.11.2008
(51) International Patent Classification (IPC): 
F25B 1/00(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

(30) Priority: 30.11.2007 JP 2007310097

(62) Application number of the earlier application in accordance with Art. 76 EPC:
08855672.5 / 2196745

(71) Applicant: Mitsubishi Electric Corporation
Tokyo 100-8310 (JP)

(72) Inventors:
  • Okazaki, Takashi
    Tokyo, Tokyo 100-8310 (JP)
  • Unezaki, Fumitake
    Tokyo, Tokyo 100-8310 (JP)
  • Oobayashi, Tomoyoshi
    Tokyo, Tokyo 100-8310 (JP)

(74) Representative: Pfenning, Meinig & Partner GbR 
Patent- und Rechtsanwälte Theresienhöhe 11a
80339 München
80339 München (DE)

   


(54) Refrigeration cycle apparatus


(57) A refrigerant cycle apparatus comprising:
a compressor (1), a radiator (2), decompression means (3), a heat absorber (4), an internal heat exchanger (5) that performs heat exchange between a refrigerant at an outlet of said radiator and the refrigerant at an outlet of said heat absorber, wherein
first temperature detection means (30) for detecting a refrigerant temperature between an outlet of the compressor (1) and an inlet of the radiator (2) and second temperature detection means (31) for detecting the refrigerant temperature between the outlet of the radiator (2) and a high-pressure side inlet of the internal heat exchanger (5) are provided, and
an opening degree of decompression means (3) is controlled so that a temperature difference (ΔT) between a detection temperature by the first temperature detection means (30) and the detection temperature by the second temperature detection means (31) becomes a target value.







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