| 摘要 |
PROBLEM TO BE SOLVED: To increase the sensitivity and accuracy of the control of a direct-current fan by a control drive unit which generates a control current and transmits the current directly to a coil of a stator to magnetize a plurality of magnetic pole faces of the stator facing permanent magnets so as to form magnetic poles. SOLUTION: This inner rotor type direct-current fan includes a housing 1, a rotor 3, a stator 2, a fan wheel 4, and a control drive unit 5. A storage space 10 is formed in the housing 1. The rotor 3 is rotatably stored in the storage space 10, and permanent magnets 32 are formed on the rotor 3. The stator 2 is fixedly installed in the storage space 10 of a mounting casing 12 so as to surround the rotor 3. At least one coil 23 is formed in the stator 2. The fan wheel 4 is joined to one end of a shaft rod 31. The control drive unit 5 is stored in the storage space 10, and electrically connected to the coil 23 of the stator 2. COPYRIGHT: (C)2011,JPO&INPIT
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