INDUCTION ELECTRIC MOTOR ROTOR

A rotor of an induction electric motor according to one embodiment includes a rotor core, rotor slots and conductor bars. The rotor core is rotatably provided around a rotation axis. The rotor slots are formed on an outer peripheral surface side of the rotor core, penetrates the rotor core in a rotation axis direction, and are arranged in a rotation direction. The conductor bars are inserted into the rotor slots, respectively. The rotor slot includes an inner slot and an outer slot. The conductor bar is arranged in the inner slot. The outer slot is formed on an outside in a radial direction of the inner slot and communicates with the inner slot. The outer slot has such a shape that a width in the rotation direction gradually decreases toward the outside in the radial direction. A projection which projects from an inner surface toward an inside in the radial direction is provided on an outermost side in the radial direction of the outer slot.