Patent ID: 9660505
Date: 2017-05-23
CPC Classifications: H02K

Claim:
1. An electrical machine comprising: a rotor disposed at a central shaft, wherein the central shaft is hollow; a stator disposed radially outboard of the rotor and secured at a back iron; and a first baffle disposed coupled to the central shaft at one axial end of the rotor, the baffle extending radially outwardly from the central shaft toward a baffle cavity at the back iron such that a portion of the baffle closest to the baffle cavity is farthest from the one axial end of the rotor and a portion of the baffle closest to the central shaft is closest to the one axial end of the rotor; wherein a flow of a liquid coolant is urged radially, originating from the central shaft, toward the baffle cavity along the baffle via centrifugal force and the baffle directs the flow of the liquid coolant radially from the central shaft between the baffle and a rotor winding and a stator winding toward the baffle cavity.