| 摘要 |
PROBLEM TO BE SOLVED: To improve cooling performance at the end part of a stator coil winding, and to reduce heat loss. SOLUTION: In an outer shell 21, that is composed of a stator frame 22 and bearing brackets 23 and 24, a rotor 37 that has a stator 27 and a rotary shaft 36 is provided, and at the same time, partition members 45 and 46 that separate the upstream side from the downstream one in axial flow fans 43 and 44 which are mounted to the rotary shaft 36 for fixing are provided, and an inner circumference side coil winding end part projects inside nearly into an arc shape at the end of stator coil winding covered with the partition members 45 and 46, while being located on the downstream side.
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