(19)
(11) EP 1 647 716 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
14.11.2007 Bulletin 2007/46

(43) Date of publication A2:
19.04.2006 Bulletin 2006/16

(21) Application number: 05017835.9

(22) Date of filing: 17.08.2005
(51) International Patent Classification (IPC): 
F04D 29/10(2006.01)
F04D 29/42(2006.01)
 F04D 13/06(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK YU

(30) Priority: 15.10.2004 JP 2004301283

(71) Applicant: Fujikoki Corporation
Tokyo (JP)

(72) Inventors:
  • Kabayama, Tadashi
    Setagaya-ku Tokyo (JP)
  • Imai, Masayuki
    Setagaya-ku Tokyo (JP)

(74) Representative: Steinmeister, Helmut 
TER MEER STEINMEISTER & PARTNER GbR, Artur-Ladebeck-Strasse 51
33617 Bielefeld
33617 Bielefeld (DE)

   


(54) Drain pump


(57) The invention provides a drain pump of an air conditioner capable of preventing return water from splashing toward a motor when the motor stops. A drain pump 1a comprises a pump body 10 including a pump chamber 16, an inlet port 12 and an outlet port 14, and a lid member 130. A boss portion 132 of a lid member has an opening 134 through which a shaft 52 of a rotary vane 50 within the pump chamber 16 is projected. An output shaft 64 of the motor 60 within the motor casing 140 is press-fit to the shaft portion 52. When the motor 60 is stopped, the water inside the exhaust hose 18 flows back into the pump chamber 16 and is spurted through the opening 134. An outer circumference wall 144 of an opening 142 of the output shaft 64 of the motor casing 140 is tapered so as to prevent the spurted water from entering the motor.







Search report