Loading patent…
AssigneeGeneral Electric Company
InventorsOwen H. Scheldorf, Robert J. Alvarez
Estimating the term…
A method is disclosed of counteracting the tendency for oil to enter a compressor motor air gap. The method includes the provision of means that interrupt the normally smooth surface of a rotor to which oil would otherwise adhere. Either alternatively or additionally, a sweeping action is carried out for moving oil to stator slots adjacent to the motor air gap and thus out of the air gap. Departure from conventional rotor construction includes providing one or more grooves along the surface of the rotor. Grooves may be cut into rotor surfaces by a file or ball end mill. In other forms, grooves or dents may be coined or otherwise pressed into the rotor; or such grooves may be provided as a result of the configuration of the individual rotor laminations. The grooves may be disposed parallel to the rotor axis or disposed spiralled (clockwise and counterclockwise); and either one or a plurality of grooves may be provided.
In a motor-compressor unit having a casing surrounding an electric motor and a compressor, the unit including lubricant for use in lubricating compressor and motor bearings and for use in cooling at least parts of the electric motor, said electric motor comprising a stator including a core having winding accommodating means, a rotor receiving bore, and windings carried by said means outwardly of said bore with end turns extending axially beyond each end face of said core;
In a motor-compressor unit having a casing surrounding motor and compressor parts, and fluid used for lubricating parts of the unit, an electric motor comprising a stator including a core having winding accommodating means, a rotor receiving bore, windings carried by said means with end turns extending axially beyond each end face of said core, and a laminated rotor mounted for relative rotation in the bore of said stator and defining an air gap therewith, said rotor including a laminated magnetic core and a squirrel cage winding provided by conductors extending at least generally axially along the rotor core and by end rings interconnecting said conductors at each end of the rotor core, said rotor having a generally cylindrical surface and also having means therealong for sweeping lubricant from the air gap;
A laminated rotor for use in a motor-compressor unit comprising a compressor and a motor including a stator and rotor assembled together and defining a motor air gap therebetween, wherein a coolant is applied to at least part of the motor during operation of the unit, and wherein said rotor comprises a laminated magnetic core having a generally smooth cylindrical surface with conductive means accommodated thereby;
A method of manufacturing a laminated rotor for use in a motor-compressor unit comprising a stator and rotor assembled together and defining a motor air gap therebetween, and wherein a coolant is applied to at least part of the motor during operation of the unit, the method comprising:
Dependencies are inferred from the claim text.