Honda Motor Co., Ltd.
Heat pipe, rotor, and rotary electric machine

Abstract:

A rotor includes: a rotor core; a magnet that is arranged along an axial direction of a central axis of the rotor core; and a heat pipe that is arranged around the central axis of the rotor core, wherein the heat pipe includes: an operation liquid that is provided in an internal space of the heat pipe and that allows heat to move via evaporation and condensation; a heated part that extends so as to be parallel with the central axis, that receives heat from the magnet, and that is heated; and a cooled part that is arranged on one side in a longitudinal direction of the heated part and that is cooled, wherein the cooled part is slanted away from the central axis of the rotor core in a direction from the one side in the longitudinal direction of the heated part toward another side in the longitudinal direction of the heated part.