| 摘要 |
PURPOSE: A power device controlling the repulsive power of a permanent magnet with ferrofluid is provided to considerably save the operation cost through a continuous rotation without energy supply. CONSTITUTION: A plurality of permanent magnets(10) are attached to the outsides of rotary supports(31) at regular intervals. The same polarities of the permanent magnets attached to the outsides of the rotary supports direct outwards. In order that the same polarity to the external polarity of the rotor direct toward the rotor, one or more permanent magnets are installed around a rotor on a fixed support frame(11). An elastic liquid pocket(20) is attached to the outside of a stator. The repulsive force, which is generated when the rotor rotates clockwise and enters the stator, is reduced since it makes the ferrofluid easily move to the opposite pocket. A liquid control board(21) is established in the liquid pocket and thus the ferrofluid does not easily move in an opposite direction. The repulsive power in retreat is greater than that in entry to make continuous rotation.
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