(19)
(11) EP 0 840 071 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
16.09.1998 Bulletin 1998/38

(43) Date of publication A2:
06.05.1998 Bulletin 1998/19

(21) Application number: 97308769.5

(22) Date of filing: 31.10.1997
(51) International Patent Classification (IPC)6: F24F 11/00
(84) Designated Contracting States:
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV RO SI

(30) Priority: 31.10.1996 JP 290883/96

(71) Applicant: KABUSHIKI KAISHA TOSHIBA
Kawasaki-shi, Kanagawa-ken 210 (JP)

(72) Inventors:
  • Nobuo, Kawai
    Fujinomiya-Shi, Shizuoka-Ken (JP)
  • Hideaki, Motohashi
    Fuji-Shi, Shizuoka-Ken (JP)
  • Hiroyuki, Tanaka
    Fuji-Shi, Shizuoka-Ken (JP)

(74) Representative: Waldren, Robin Michael 
MARKS & CLERK, 57-60 Lincoln's Inn Fields
London WC2A 3LS
London WC2A 3LS (GB)

   


(54) Air conditioner and method of controlling the air conditioner


(57) In an air conditioner (1), a refrigerant circulation cycle is constituted by sequentially connecting a compressor (2), an indoor heat exchanger (4) having an indoor fan (4a), a PMV and an outdoor heat exchanger (6) having an outdoor fan (6a). An alternative refrigerant having a saturated pressure higher than that of HCFC22(R22) at the same temperature is used as a refrigerant. The blowout angle of air blown out from the indoor fan (4a) is vertically regulated by lateral louvers. An indoor controller, a louver motor (LM) and a louver drive circuit are adapted to control, at the start of heating operation, the lateral louvers (27a,27b) so as to direct the air flow upward toward a ceiling side in the room and, when the indoor heat exchanger (4) reaches a state capable of executing heat exchange operation, adapted to control the lateral louvers (27a,27b) so as to direct the air flow downward toward a floor side in the room.






Search report