| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotary electric machine which can effectively cool the inside of an iron core of a rotor by ventilation and which does not require a number of man hours in manufacturing.SOLUTION: A rotary electric machine 11 comprises: a stator 12 having a cylindrical inner hole; and a rotor 13 which has a rotation shaft 17 concentric with the inner hole of the stator 12 and whose outer peripheral surface faces an inner peripheral surface of the inner hole across a predetermined gap. A rotor iron core 18 provided around the rotation shaft 17 is divided in the axial direction into a plurality of sections. In each of the divided sections of the rotor iron core 18, a plurality of ventilation holes 19 penetrating through the axial direction are formed around the rotation shaft 17. In addition, a spacer 22 is provided between edge faces of the rotor iron core sections, and a duct 23 is formed to communicate from the ventilation hole 19 to the gap defined between the inner peripheral surface of the stator inner hole and the outer peripheral surface of the rotor 13. |
