| 摘要 |
<P>PROBLEM TO BE SOLVED: To properly prevent the increase in the temperature of a rotor and a support shaft caused by the friction heat between them by efficiently cooling the rotor and the support shaft when rotating the rotor, while rotatably supporting the rotor on the support shaft. <P>SOLUTION: The support shaft 20 inserted into the center hole 11 of the rotor 10 is constituted of a hollow duct, and an opened part 23 for directly guiding air into the center hole 11 of the rotor 10 is formed in the support shaft 20, allowing air to directly come into contact with the center hole 11 of the rotor 10 supported on the support shaft 20 through the opened portion 23. <P>COPYRIGHT: (C)2012,JPO&INPIT |
