Patent ID: 8602753
Filing Date: 2013-12-10
Classification: F04D

Abstract:
1. A geothermal fluid pump induction motor comprising: a rotatable shaft; a rotor and a stator one of which comprises an induction coil cooperative with said shaft such that upon passage of electric current through said induction coil, rotating movement is imparted to said shaft; a bearing assembly comprising: a motor section enclosure disposed about said shaft, said induction coil and said bearing assembly such that said lubricant placed therein may serve as a heat removal medium for said bearing assembly; and a geothermal fluid passage formed concentrically around said motor section enclosure such that upon thermal contact between said geothermal fluid in said passage and an outer surface of said motor section enclosure, a transfer of heat from said bearing assembly to said geothermal fluid takes place across said motor section enclosure while maintaining fluid isolation between said lubricant and said geothermal fluid.