(19)
(11) EP 2 679 921 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
06.01.2016 Bulletin 2016/01

(43) Date of publication A2:
01.01.2014 Bulletin 2014/01

(21) Application number: 13160066.0

(22) Date of filing: 19.03.2013
(51) International Patent Classification (IPC): 
F24F 1/06(2011.01)
F25B 13/00(2006.01)
F24F 3/14(2006.01)
F25B 49/00(2006.01)
 F25B 9/00(2006.01)
F24F 1/46(2011.01)
F24F 11/00(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: 27.06.2012 JP 2012143606

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

(72) Inventors:
  • Suzuki, Yasuhiro
    Tokyo, 100-8310 (JP)
  • Makino, Hiroaki
    Tokyo, 100-8310 (JP)
  • Maeyama, Hideaki
    Tokyo, 100-8310 (JP)
  • Ishii, Minoru
    Japan, 100-8310 (JP)

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

   


(54) Refrigeration cycle apparatus


(57) From recent study of combustion of an HFC refrigerant that has a low GWP but is flammable, it has been found that the combustion scale tends to increase as the absolute humidity increases. In a refrigeration cycle apparatus using such a refrigerant, it is necessary to increase safety against unexpected refrigerant leakage in consideration of this tendency.
This refrigeration cycle apparatus includes a compressor having a compression mechanism section in an enclosed container and configured to compress and discharge a refrigerant so as to circulate the refrigerant in a refrigerant circuit, and an outdoor unit installed outdoors and having a housing divided by a partition plate into a fan chamber and a machine chamber including the compressor. The refrigerant is a flammable HFC refrigerant. The refrigeration cycle apparatus further includes a desiccant attached in thermal contact with a surface of the enclosed container of the compressor whose temperature is increased by a gas refrigerant compressed by the compression mechanism section during operation of the compressor so that the temperature becomes a high temperature near a temperature of the compressed gas refrigerant, and adsorbs water from air in the machine chamber during non-operation of the outdoor unit.







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