VENTILATION SYSTEM FOR ELECTRIC MOTOR Russian patent published in 1997 - IPC

FIELD: electric engineering. SUBSTANCE: device has core of stator 1 with winding 2, which radial ventilation channels are separated in tangential direction into regions 3 for inlet of cooling gas into space 4 and regions 5 for outlet of cooling gas from space 4. Inner bores in core of stator 1 hold non-magnetic housing 7 by means of spacing insertions 6 between which channels are provided for transmission of gas from regions 3 to regions 5. Channels 8 are spaced from rotor 9 by means of housing 7. EFFECT: improved heat condition of active members of stator of electric motor. 2 dwg