ELECTRIC MACHINE WITH IN SLOT COOLING SYSTEM
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United States of America Patent
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Issued Date -
Apr 2, 2015
app pub date -
Oct 2, 2013
filing date -
Oct 2, 2013
priority date (Note) -
Abandoned
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Abstract
An electric machine that includes a stator core having at least one slot and a winding in the slot. An elongate cooling conduit defines at least one projecting bend that is positioned in the slot. The projecting bend has first and second axially extending legs and an intermediate section. Coolant is conveyed through a first axial end opening of the slot within the first leg and then sequentially conveyed through the intermediate section and out the first axial end opening within the second leg. The projecting bend is in thermal communication with at least one of the winding and the stator core. A method of manufacture is also disclosed and may include bending a conduit having a uniform wall thickness and cross-section to form a plurality of projecting bends. The method may also include simultaneously inserting the projecting bends into respective slots from one end of the stator core.
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