Patent ID: 8749105

Claim:
A magnetic inductor rotary machine comprising: a stator including a stator core having a first stator core and a second stator core with identical shapes and a plurality of teeth that circumferentially partition off slots that have openings on an inner peripheral side, each tooth in the first stator core is aligned in a circumferential direction and separated in an axial direction from a corresponding tooth in the second stator core to form pairs of aligned teeth, and the teeth project radially inward from an inner peripheral surface of a cylindrical core back, and a stator coil that is mounted to said stator core in a concentrated winding, said stator coil including a plurality of three phase coils each of which is wound around only one pair of the aligned teeth without spanning any of the slots; a rotor including a first rotor core and a second rotor core that are prepared into identical shapes wherein salient poles are disposed at a uniform angular pitch circumferentially, and that are fixed coaxially to a rotating shaft so as to be positioned on inner peripheral sides of said first stator core and said second stator core, respectively, and so as to be offset circumferentially by a pitch of half a salient pole from each other; a magnetic field means that is disposed on said stator, and that generates field magnetic flux such that said salient poles of said first rotor core and said salient poles of said second rotor core have different polarity; and an axial magnetic path forming member that is disposed so as to extend axially so as to link an outer peripheral surface of said core back of said first stator core and an outer peripheral surface of said core back of said second stator core, wherein a magnetic path is formed in which said magnetic flux generated by said magnetic field means enters said salient poles of said first rotor core from said first stator core, flows axially through said first rotor core and said rotating shaft, enters said second rotor core, enters said second stator core from said salient poles of said second rotor core, flows axially through the axial magnetic path forming member, and returns to said first stator core, a salient pole width of said salient poles of said first rotor core and said second rotor core is greater than an opening width of said slots of said stator, and the number of teeth Ns in each of said first stator core and said second stator core satisfies Ns=3×(N+1), and the number of salient poles Nr in each of said first rotor core and said second rotor core satisfies Nr=M×(N+1), where M=1 or 2, and N=1, 2, or 3.