INDUCTION MOTOR AND METHOD OF PROVIDING AXIAL FLOW IN A SUBMERGED INDUCTION MOTOR

摘要

A motor having a rotor with a plurality of grooves extending generally longitudinally along an outer surface of the rotor. A cross-sectional shape of the rotor outer surface generally corresponds to the shape of an outer boundary of a flux pattern that is developed in the rotor during operation. A plurality of slots extend longitudinally along the same general direction as the grooves and are positioned in a spaced relationship to the outer surface of the rotor and the grooves. The grooves and/or slots extend in a skewed or generally helical direction along the length of the rotor to enhance pumping action.