| 摘要 |
A vertical pump, comprising: a rotating body having an impeller arranged with its axial center being vertical, and a cylindrical rotor fixed to an upper portion of said impeller with their axial center being aligned with each other, a main portion of said cylindrical rotor being composed of a good conductor; a casing for housing said rotating body with a gap rotatively; and rotation magnetic field generating means for applying a rotational force to said cylindrical rotor, said means facing said cylindrical rotor. <IMAGE> |
