END TURN CONSTRUCTION FOR DYNAMOELECTRIC MACHINES

摘要

In a dynamoelectric machine a disadvantageous feature is that coolant tends to find its way into an airgap between a rotor and a stator to cause friction and windage losses. This problem is solved by an end turn construction to improve cooling in the dynamoelectric machine and to axially reduce the size thereof. The machine includes a body (12) of magnetizable material having opposed ends (18), an opening (14) extending between the ends (18), and the plurality of slots (50) about the opening (14). A rotor (16) is disposed within the opening (14) and journalled for rotation therein and electric conductors (52) are located in the slots (50) and extend to ends (54, 56) just past the ends (18) of the body (12). End turns (58, 60, 62 and 68) each interconnect a predetermined pair of conductors (52) and extend substantially circumferentially and radially of the rotor axis with no appreciable extension axially of the axis.