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    • 2. 发明授权
    • Rotor assembly end turn cooling system and method
    • 转子总成转弯冷却系统及方法
    • US06844637B1
    • 2005-01-18
    • US10641209
    • 2003-08-13
    • Matthew Bertram SmithRobert Joseph Budenholzer
    • Matthew Bertram SmithRobert Joseph Budenholzer
    • H02K1/32H02K9/00
    • H02K9/005H02K1/32
    • A rotor assembly end turn cooling system and method in which cooling fluid is introduced at both ends of each cooling fluid passageway and at various points therebetween and spent cooling fluid is exhausted through exhaust openings disposed at various points between the ends of each cooling fluid passageway, including near the end turn corners. Multi-layered bore baffle shells and/or helical exhaust ducts having multiple channels control the flow of cooling fluid through the passageways and into axial rotor slots for expulsion into the rotor-stator gap. Each duct or channel may increase in cross-sectional area in the flow direction to maintain constant fluid flow velocity in the duct or channel. Improved end turn cooling and reduced cooling fluid temperatures maintain more consistent temperatures in the end turns and reduce the maximum hot-spot temperature to provide greater generator power densities and longer rotor coil insulation life.
    • 一种转子组件端部转向冷却系统和方法,其中冷却流体在每个冷却流体通道的两端处并在其间的各个点处被引入,并且废冷却流体通过设置在每个冷却流体通道的端部之间的各个点处的排气口排出, 包括靠近转弯处。 具有多个通道的多层孔挡板壳和/或螺旋排出管道控制冷却流体通过通道和流入轴向转子槽的流动,以排出到转子 - 定子间隙中。 每个管道或通道可以在流动方向上的横截面积增加,以保持管道或通道中恒定的流体流速。 改进的端部转向冷却和降低的冷却液温度在端匝中保持更一致的温度,并降低最大热点温度,以提供更大的发电机功率密度和更长的转子线圈绝缘寿命。