| 摘要 |
PURPOSE:To efficiently cool a generating coil by forming a vent passage between a vent window and a blade, and circulating cooling air through the passage. CONSTITUTION:Cooling air 28 flowing through the periphery of generating coils 11 of poles passes while removing heat generated at the coils 11, and is exhausted from a vent passage 27 into a cover 3. The air 18 flowed into the cover 3 makes contact with the end 3a of the cover 3, and then passes an air gap between a flywheel 5 and the cover 3 to dissipate the removed heat through the cover 3 externally. Cooled air 28 is again circulated to the air gap around the coils 11 from a hole of the flywheel 5. Thus, the air 18 is circulated to efficiently cool the coils 11. |
