| 摘要 |
PROBLEM TO BE SOLVED: To reduce leakage flow from a tip clearance while sufficiently securing the stability of the rotation operation of an impeller 21, to thereby improve efficiency of a geared compressor 1 up to a high level.SOLUTION: A first magnet 43 is provided at the center part of the tip side of a disk 25. One pole of the first magnet 43 faces to one side of an axial direction, and the other pole of the first magnet 43 faces to the other side of the axial direction. A second magnet 47 is provided on one side of the axial direction of the impeller 21 in an impeller housing 31, and one pole of the second magnet 47 faces to the one pole side of the first magnet 43. |
