| 摘要 |
PURPOSE:To reduce the profile of a fan and to decrease a noise by mounting a fan in a rotor which is composed of a ring-shaped magnet and a yoke. CONSTITUTION:A stator core 2 is secured into a case 1, and a stator coil 3 is wound on the core 2. The core 2 is formed in an air duct, a ring-shaped magnet 4 is disposed through a suitable air gap with the bore of the core 2, and a yoke 5 is provided inside the magnet 4. A fan 6 is secured to the inside of the yoke 5, a shaft 7 is mounted at the center of the fan 6, and the upper and lower ends of the shaft 7 are rotatably supported by bearings 8 provided at the center of the case 1. The fan 6 is rotated upon rotating of the magnet 4. |
