(19)
(11) EP 1 087 184 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
02.10.2002 Bulletin 2002/40

(43) Date of publication A2:
28.03.2001 Bulletin 2001/13

(21) Application number: 00307919.1

(22) Date of filing: 13.09.2000
(51) International Patent Classification (IPC)7: F24F 11/00
(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: 24.09.1999 JP 27036299

(71) Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA
Tokyo 100-8310 (JP)

(72) Inventors:
  • Kai, Akihiro
    Chiyoda-ku, Tokyo (JP)
  • Itagaki, Masaya
    Chiyoda-ku, Tokyo (JP)

(74) Representative: Godwin, Edgar James 
MARKS & CLERK, 57-60 Lincoln's Inn Fields
London WC2A 3LS
London WC2A 3LS (GB)

   


(54) Air conditioner


(57) A refrigerant circulation circuit circulates a refrigerant discharged from a compressor (1) through a condenser (3) to an evaporator (5). A current sensor (15) detects an operating current for the compressor (1). A microcomputer (7) judges an operating condition of the compressor (1) based on a result detected by the current sensor (15). Driving means (17b, 19a, 19b, 20) receive an instruction from the microcomputer (7) to drive the compressor (1). A high-pressure switch (8) is connected in series to the electric circuit of the driving means and is operable based on a discharge pressure of the compressor (1). The microcomputer (7) judges absence or presence of operation of the high-pressure switch (8) based on the result detected by the current sensor (15).






Search report