Shield and Coolant Guide for an Electric Machine
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United States of America Patent
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Issued Date -
Feb 27, 2014
app pub date -
Aug 23, 2013
filing date -
Aug 24, 2012
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Abandoned
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Abstract
Peak performance of an electric motor can be enhanced by effective cooling of windings of the stator to avoid overheating. A liquid coolant is effective at cooling the stator; but in high-speed motors, it is advisable to avoid allowing coolant on the rotor to avoid high frictional losses. A shield provided in the air gap between the rotor and the stator guides the coolant back to a sump without gaining access to the rotor. Furthermore, if the electric machine is proximate a high temperature component, the shield may further prevent radiative and conductive heat transfer to the electric machine.
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