| 摘要 |
PROBLEM TO BE SOLVED: To sufficiently secure the cooling performance of permanent magnets embedded in a rotor core by preventing a refrigerant from leaking out of the space in magnetic steel sheets, suppressing deterioration in performance of a rotating electric machine. SOLUTION: A rotor 7 includes a rotor rotating shaft 3, the rotor core 11 having laminated steel sheets fixed to the rotor rotating shaft 3 and provided with a plurality of magnet accommodation holes 17 formed by penetrating the laminated steel sheets in the axial direction of the rotor rotating shaft 3, and a plurality of permanent magnets 5 accommodated in the respective magnet accommodation holes 17. In this case, the magnet accommodation holes 17 have each refrigerant passage 18 wider than the portion occupied with the permanent magnet 5, with the inner wall of the passage 18 covered with a resin material. COPYRIGHT: (C)2010,JPO&INPIT
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