Rotating electrical machine

Abstract

A rotating electrical machine includes: a stator that includes a cylindrical inner hole; and a rotor that includes a rotation shaft being concentric with the inner hole of the stator and whose outer peripheral surface faces an inner peripheral surface of the inner hole across a predetermined gap, wherein a rotor core that is provided around the rotation shaft is divided into a plurality of portions in an axis direction thereof, and, inside each of rotor cores that are created by the division, a plurality of ventilation holes are formed around the rotation shaft in such a way as to pass therethrough in an axis direction thereof, and a spacer is provided between end surfaces of the rotor cores, and a duct is formed in such a way as to extend from the ventilation holes to the gap with the inner peripheral surface of the inner hole of the stator.

Dependencies are inferred from the claim text.