| 摘要 |
A gas cooled dynamoelectric machine is provided that is comprised of a rotor (10), a rotor winding comprising axially extending coils (22) and concentric endwindings (28), and a plurality of spaceblocks (140, 240) located between adjacent endwindings (28) thereby to define a plurality of cavities (142, 242), each bounded by adjacent spaceblocks (140, 240) and adjacent endwindings (28). To enhance the heat transfer rate from the copper end turns (27) of the field endwinding region, at least one scoop structure (156, 256) is provided adjacent the radially inner end of a cavity facing surface (144, 244) of at least one spaceblock (140, 240) for intercepting and redirecting coolant flow into the respective cavity (142, 242). The spaceblock itself may have curved upstream and/or downstream surfaces (244, 262) for facilitating circulating coolant flow.
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