Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2008-07-23
2010-10-19
Leung, Quyen (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S058000, C310S055000, C310S061000, C310S064000
Reexamination Certificate
active
07816825
ABSTRACT:
A cooling gas ventilation chimney is provided for enhancing the heat transfer of an end region of a dynamoelectric machine. The dynamoelectric machine includes a rotor having a plurality of radial slots. A plurality of coils are seated in the radial slots, and the coils form a plurality of radially stacked turns. The ventilation chimney includes one or more chimney slots defined in at least a portion of the radially stacked turns. The chimney slots extend in a substantially radial direction to the rotor, and some of the chimney slots have an axial or circumferential length different from other chimney slots.
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Derwent Translation Abstract and Use/Advantage (SU1615842A).
M. K. Chyu, et al., “Concavity Enhanced Heat Transfer in an Internal Cooling Passage”, ASME Proceedings of the 1997 International Gas Turbine & Aeroengine Congress & Exhibition, Paper No. 437, p. 1-7, Orlando, FL, Jun. 2-5, 1997.
de Bock Hendrik P. J.
Gerstler William D.
Jarczynski Emil D.
Kaminski Christopher Anthony
Suguitan Norman J.
Cusick Ernest G.
General Electric Company
Gonzalez Quinones Jose A
Landgraff Frank A.
Leung Quyen
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