Compressor with motor cooling
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United States of America Patent
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Oct 6, 2020
Grant Date -
Feb 8, 2018
app pub date -
Oct 18, 2017
filing date -
Mar 17, 2016
priority date (Note) -
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Abstract
A compressor includes a compression mechanism, a shaft, a motor, and a cooling medium delivery structure. The motor includes a rotor mounted on the shaft and a stator disposed radially outwardly of the rotor to form a gap between the rotor and the stator. The cooling medium delivery structure includes inlet and outlet conduits located to supply and discharge a cooling medium to and from the motor. The shaft has an external shape different than an internal shape of the rotor to form at least one axial passageway between the shaft and the rotor. The cooling medium is supplied through the gap and the at least one axial passageway to cool the rotor.
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