(19)
(11) EP 1 939 452 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
25.11.2009 Bulletin 2009/48

(43) Date of publication A2:
02.07.2008 Bulletin 2008/27

(21) Application number: 07024423.1

(22) Date of filing: 17.12.2007
(51) International Patent Classification (IPC): 
F04C 18/02(2006.01)
F04C 29/00(2006.01)
 F04C 29/04(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 MT NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK RS

(30) Priority: 28.12.2006 JP 2006355474

(71) Applicant: ANEST IWATA CORPORATION
Yokohama-shi, Kanagawa-ken 223-8501 (JP)

(72) Inventors:
  • Nakayama, Takamitsu
    Yokohama-shi, Kanagawa-ken 223-8501 (JP)
  • Serita, Takashi
    Yokohama-shi, Kanagawa-ken 223-8501 (JP)

(74) Representative: Strehl Schübel-Hopf & Partner 
Maximilianstrasse 54
80538 München
80538 München (DE)

   


(54) A fluid machine connected to a drive source via a magnetic coupling


(57) The present invention aims to propose a fluid machine in which a magnetic coupling includes an outer rotor (32) to the cylinder-bottom part of which a drive shaft of the drive component is connected, outer rotor side magnets (33) placed on an inner periphery of the outer rotor, an inner rotor (23) fitted to a drive shaft of the fluid machine, inside the outer rotor, inner rotor side magnets (21) placed on an outer periphery of the inner rotor, whereby attraction workings and repulsion workings between the outer rotor side magnets and the inner rotor side magnets transmit torques of the drive component to the fluid machine, and a sealing assembly (20) a partition part of which is placed between the inner rotor (23) and the outer rotor (32) and surrounds a drive shaft of the fluid machine so as to secure gas-tightness, the shaft including the inner rotor (23) and the inner rotor side magnets (21); further an air ventilation device for ventilating a space inside the outer rotor by means of inducing and/or discharging ambient air is provided into the outer rotor (32) of the magnetic coupling so as to cool the sealing assembly (20) and the outer rotor side magnets (33).







Search report