Rotor and squirrel-cage induction machine in squirrel-cage induction machine

摘要

PROBLEM TO BE SOLVED: To enhance the performance of cooling conductors at a rotor in a cage-type induction machine.;SOLUTION: A plurality of heat dissipation pieces 28, 29 are formed integrally on the inner peripheral surfaces of short circuit rings 18, 19. The heat dissipation piece 28 is formed so as to be projected into a penetration passage 160 from an edge 181 side of the short circuit ring 18 facing one edge 162 of the a rotor core 16, and the heat dissipation piece 29 is formed so as to be projected into the penetration passage 160 form the edge 191 side of the short circuit ring 19 facing the other edge 163 of the rotor core 16. Namely, parts of the heat dissipation pieces 28, 29 are projected into the penetration passage 160 through which a rotary shaft 17 passes.;COPYRIGHT: (C)2011,JPO&INPIT