Sundstrand Corporation

Clarence A Grow

Roger J Collings

Lack of uniformity in liquid cooling the end turns of a dynamoelectric machine can be avoided in a structure including a stator (14) having a rotor receiving opening (22) and opposed end faces (18) and (20). Slots (24) in the stator (14) extend between the end faces (18) and (20) and a plurality of electrical conductors (28) are located in each of the slots (24) such that interstices exist between adjacent conductors (28) and define coolant flow passages within the slots (24) from one face (18) to the other (20). The conductors (18) exit the slots (24) at the end faces (18 and 20) and are redirected into another one of the slots (24) to thereby define end turns (30) at each end face (18 and 20). Two tubes (32 and 34) are located on each end turn (30) and adjacent ends (36, 38) of each tube (32, 34) are slightly spaced to defined a gap (40) and remote ends (42, 44) of each tube (32, 34) are sealed to the associated end face (18, 20) about the periphery of the associated slot (24).

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Rockford, IL, United States of America

Clarence A Grow