Patent ID: 6288461
Filing Date: 2001-09-11
Classification: H02K

Abstract:
An electric rotary machine comprising a rotor winding having a plurality of winding conductors accommodated in a plurality of slots formed in a rotor core and formed of a plurality of plate-shaped conductors laminated and insulated from one another, each said winding conductor having a plurality of through holes perforated therein to provide a plurality of flow paths for allowing a cooling gas introduced from a periphery of said rotor core to flow in an axial direction of said rotor core while simultaneously allowing the cooling gas to flow also in a radial direction of said rotor core, wherein said plurality of through holes are disposed in a plurality of rows arranged in a width direction of said conductors, said plurality of flow paths being of a plurality of entry side flow paths composed of at least two rows of said plurality of rows and a plurality of exhaust side flow paths composed of at least two other rows of said plurality of rows.