ELECTRIC MACHINE ROTOR Russian patent published in 2019 - IPC H02K1/32 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering, to rotors of highly used gas-cooled turbine generators. Rotor comprises cooling channels communicating with axial sub-channels, and outlets of cooling channels are arranged on outer surface of rotor. Cooling channels make groups. First cooling channels on the side of both ends of the rotor are inclined to the axis of rotation of the rotor so that the outlets of these cooling channels are closer to the radial plane of symmetry of the rotor than their inputs, and value of angle of inclination to rotation axis of rotor of cooling channels of each next group increases relative to value of angle of inclination of cooling channels of previous group and is not more than 90° near radial plane of symmetry of rotor. Number of cooling channels in adjacent groups differs by not more than 2 cooling channels.

EFFECT: increased intensification of cooling and alignment of temperature field of rotor winding along its length.

4 cl, 8 dwg