| 摘要 |
PURPOSE:To efficiently cool a generating coil of a stator by providing a self- heat generating and cooling fan in a rotor. CONSTITUTION:Cooling air generated by vanes 18 by the rotation of a rotor 1 passes an air gap of a generating coil 11 of each pole as designated by an arrow while removing heat generated from the coil 11, and flows out from a vent window 17 of a flywheel 5 into a cover 3. After the flowed out cooling air is contacted with the end 3a of the cover 3, the air passes through the gap between the cylinder 5a of the flywheel 5 and the cover 3, and dissipates the heat removed thereat through the cover 3 externally. Then, the cooled air is again circulated from the hole side of the flywheel 5 into the air gap of the coil 11. When the cooling air is thus circulated, the coil 11 can be efficiently cooled. |
