(19)
(11) EP 1 055 885 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
03.04.2002 Bulletin 2002/14

(43) Date of publication A2:
29.11.2000 Bulletin 2000/48

(21) Application number: 00110895.0

(22) Date of filing: 23.05.2000
(51) International Patent Classification (IPC)7: F24F 11/00, F25B 47/02
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 25.05.1999 JP 14523199

(71) Applicant: Sharp Kabushiki Kaisha
Osaka-shi Osaka (JP)

(72) Inventors:
  • Shibata, Etsuo
    Kitakatsuragi-gun, Nara (JP)
  • Kontani, Mamoru
    Amagasaki-shi, Hyogo (JP)
  • Ikeda, Hirokuni
    Ikoma-gun, Nara (JP)

(74) Representative: Müller . Hoffmann & Partner Patentanwälte 
Innere Wiener Strasse 17
81667 München
81667 München (DE)

   


(54) Air conditioner


(57) In order to stabilize room temperature by adjusting heating capability, intermittent operation of a compressor 1 is performed with operation time of compressor 1 temporarily made longer at a prescribed timing, so that determination as to whether outdoor heat exchanger 5 is frosted or not can be made with high accuracy. Therefore, idle defrosting operation is prevented and defrosting operation is performed without fail when necessary. Therefore, heating efficiency is improved.






Search report