Patent ID: 6849983

Claim:
A rotary machine comprising a rotor having magnetic poles and a stator having a stator yoke portion constituting an iron core both tooth portion would by a stator winding and a flux flow path of said magnetic poles, wherein said rotor is a metallic material having a ferromagnetic portion and a non-magnetic portion as an integral member, said rotor has a magnetic barrier area for blocking a bypath magnetic path in a periphery of said rotor, said magnetic barrier area constitutes magnetic air gaps formed by a slit portion and said non-magnetic portions of said metallic material which are arranged from said slit portion to a surface of said rotor, and said non-magnetic portions of said metallic material are formed according to a phase transformation by heating of a metallic element material and said transformed metallic organization is formed with an austenite structure, wherein said slit portion constitutes magnetic salient poles of said rotor, said non-magnetic portions are positioned on a magnetic air gap side of said rotor, and said slit portion is arranged on an opposite side of said magnetic air gap of said rotor.