초록 ▼

An induction motor is disclosed which utilizes a liquid in intimate contact with the rotor and stator conductors for cooling and yet minimizes the disadvantages of high rotational drag losses associated with conventional spray cooled motors. Cooling liquid is conducted through a hollow rotor shaft a

An induction motor is disclosed which utilizes a liquid in intimate contact with the rotor and stator conductors for cooling and yet minimizes the disadvantages of high rotational drag losses associated with conventional spray cooled motors. Cooling liquid is conducted through a hollow rotor shaft and directed to a cavity at the center of the magnetic length of the rotor. The cavity is formed by separating two adjacent rotor laminations. The cooling liquid flows axially from the central cavity toward the rotor ends through slots which contain the rotor conductors. A sealing band is provided around the rotor laminations to prevent cooling liquid from entering the air gap between the rotor and the stator.

대표청구항 ▼

A liquid cooled dynamoelectric machine comprising, a housing, a stator in said housing, a rotor within said stator with an air gap therebetween, a series of slots within said rotor and extending axially thereof, said slots opening to the ends of the rotor and having their radial outer ends in noncom

A liquid cooled dynamoelectric machine comprising, a housing, a stator in said housing, a rotor within said stator with an air gap therebetween, a series of slots within said rotor and extending axially thereof, said slots opening to the ends of the rotor and having their radial outer ends in noncommunicating relation with said air gap, conductors mounted in said slots and having lesser transverse dimensions than said slots to provide clearance spaces around said conductors which define liquid channels, and means for supplying a cooling liquid to said channels for flow along said channels and intimate and substantially surrounding contact with said conductors.