| 摘要 |
PROBLEM TO BE SOLVED: To provide a compact centrifugal (non-positive displacement type) motor pump being suitable for use in a region of a small output by an extremely small amount of water and having a comparatively simple structure. SOLUTION: In the motor pump in which liquid to be handled flows on an inner side of a cylindrical motor stator 10, a rotary flow passage 32 having the action for increasing a pressure of the liquid to be handled is provided inside a substantially circular columnlike motor rotor 30 arranged inside the motor stator 10 and having a permanent magnet 34 by passing through it in the axial direction.
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