Salient-pole rotor of a rotary electric machine

Claim 1

In a salient-pole rotor of a rotary electric mach-ine, comprising axial inner passages in the rotor for cooling medium, radial passages between poles for said cooling medium to flow radially towards an air gap between the rotor and a stator, radial ventilation ducts in the stator, and separate nonmagnetic guide vanes attached to and located only adjacent head portions of the poles on said rotor and extending substan-tially continuously over the whole axial length of the rotor between neighboring adjacent poles, said guide vanes providing guide paths extending substantially the whole axial length of the rotor slanting in the direction opposite to the direction of rotation of said rotor to change the flow direction of said cooling medium from radial flow to peripheral flow from the radial passages between said poles into said air gap in a direc-tion opposite to the direction in which the rotor rotates, to reduce the angular momentum of said cooling medium before entry under radial momentum into said radial ventilation ducts in the stator, and members fastened to the rotor and located between poles for securing said separate nonmagnetic guide vanes to the rotor, said members leaving the radial passages substantially unobstructed for radial flow of cooling medium from radial ventilation ducts and said axial inner passages in the rotor and through said guide paths into said air gap.