Process and device for cooling an electric machine

Details Process and device for cooling an electric machine Process and device for cooling an electric machine

H - Electricity

02

K

H02K 9/18 (2006.01) H02K 1/32 (2006.01)

Patent

CA 2656986

External fans rather than internal ones are needed for providing the air circulation required for cooling a slowly running electric machine, e.g. a bulb turbine generator. The invention relates to a device and a method for cooling an electric machine (1) by means of an external fan (10). In said device and method, the cooling apparatus (12) is disposed on the pressure side or the suction side of the fan (10) while the rotor (3) and the stator (4) are arranged on the suction side of the fan (10).

Dans le cas d'un moteur électrique tournant lentement, comme par ex. un générateur de turbine bulbe, la circulation d'air nécessaire au refroidissement ne peut pas être créée par un ventilateur propre, mais des ventilateurs externes sont nécessaires à cet effet. L'invention concerne un procédé et un dispositif de refroidissement d'un moteur électrique (1) au moyen d'un ventilateur externe (10), le dispositif de refroidissement (12) étant disposé sur le côté de pression ou d'aspiration du ventilateur (10), et le rotor (3) et le stator (4) étant disposés sur le côté d'aspiration du ventilateur (10).

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