Patent ID: 8373316
Filing Date: 2013-02-12
Classification: H02K

Abstract:
1. A fluid cooled electric machine comprising: a rotor disposed on a rotor shaft, a stator surrounding the rotor and having a plurality of radially inwardly protruding stator teeth and slots between the stator teeth, conductive coils wound around the stator teeth, each of said conductive coils defining a pair of primary coil sections passing through adjacent slots between the stator teeth and a pair of opposed end turns protruding beyond end openings of the adjacent slots, and flow deflectors surrounding each coil end turn, each of the flow deflectors having an interior surface contour that follows an outer contour of a corresponding one of the end turns to both maximize a cooling fluid flow rate past the one of the end turns and minimize separation of the fluid flow from the one of the end turns.