| 摘要 |
PROBLEM TO BE SOLVED: To obtain a simple and low cost configuration by suppressing thrust load acting on the rotating shaft by an entering fluid, and minimizing decrease in rotation efficiency of a driven side rotating shaft.SOLUTION: An inner ring magnet 22 is fixed to the outer peripheral surface of a rotating shaft 16, and an outer ring magnet 36 is provided at a position where the outer ring magnet 36 faces the inner ring magnet 22 with a cylindrical partition wall 20 interposed therebetween. The outer ring magnet 36 is fixed to a hollow cylindrical support member 30 connected with the rotor 34 of a generator 32. A permanent magnet 26 is fixed to the end face of the rotating shaft 16, and a permanent magnet 28 is fixed to the partition wall 20 at a position where the permanent magnet 28 faces the permanent magnet 26. A turbine wheel 14 and the rotating shaft 16 are rotated by fluid (a), and the support member 30 is also rotated by magnetic action of the inner ring magnet 22. Thrust displacement of the turbine wheel 14 and the rotating shaft 16 by a thrust load Fis suppressed by a repulsive force Fgenerated between the permanent magnets 26 and 28. |
