Patent ID: 8319388
Filing Date: 2012-11-27
Classification: F04B,H02K

Abstract:
1. An induction motor having a rotor for forming a double squirrel cage secondary conductor, wherein the rotor comprises: a rotor core which is formed by laminating a plurality of electromagnetic steel plates; outer layer slots which are filled with an electro-conductive material, and which are mounted along an outer peripheral edge of the rotor core; inner layer slots which are filled with an electro-conductive material, and which are disposed at an inner side of the outer layer slots in a radial direction; and inner peripheral thin bridges made from the plurality of electromagnetic steel plates, which are disposed in between the outer layer slots and the inner layer slots, and wherein an angle between side faces of the outer layer slots and a center of the rotor is greater than an angle between adjoining side planes of the outer layer slots and the center of the rotor.