H - Electricity – 02 – K
Patent
H - Electricity
02
K
310/32
H02K 1/20 (2006.01) H02K 3/24 (2006.01) H02K 5/20 (2006.01) H02K 9/18 (2006.01)
Patent
CA 1049600
VENTILATION SYSTEM FOR DYNAMOELECTRIC MACHINES ABSTRACT OF THE DISCLOSURE A ventilation system is provided for dynamoelectric machines such as hydro generators having salient pole rotors and in which the rotor and stator have separate ventilation systems sealed from the air gap. The stator ventilation system includes radial vent ducts in the stator core with longitudinal ducts extending between adjacent radial vent ducts in the tops of the winding slots. The longitudinal ducts are formed by two radially spaced wedges in each slot defining an axial passage bet- ween them, and the ducts are sealed from the air gap by the wedges and by sealing members at the inner ends of the radial ducts. Ventilating air flows radially inward through the vent ducts, longitudinally through the long- itudinal ducts from one vent duct to the next, and radia- lly outward to the external circuit where it is circulated through coolers by means of a blower or otherwise.
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