| 摘要 |
PURPOSE:To reduce the loss due to core loss, by laminating amorphous silicon steel and cooling fins composed of silicon steel plates to constitute a stator core. CONSTITUTION:A rotor 6 has a permanent magnet 61 and a tube 62. On the other hand, a stator 7 is provided in the outside circumferential direction in correspondence to the rotor 6. Amorphous silicon steel is laminated to the predetermined thickness and overlapped with cooling fins 72 composed of silicon steel plates. Further, the laminated amorphous silicon steel and cooling fins 72 are alternately put on top of one another so as to be laminated to the predetermined dimension and to be formed as an iron core section of the stator 7. In this way, the heat generation caused by the core loss due to hysteresis loss and eddy current loss generated to a stator core 71 becomes reduced. Moreover, the heat is radiated through cooling fins 72, so that the temperature of the stator 7 can be prevented.
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