PROBLEM TO BE SOLVED: To obtain a turbo pump dispensing with a valve by a structure simple and suitable for miniaturization, and to obtain a pump structure dispensing with a shaft shield.;SOLUTION: In a turbo type centrifugal pump, an angular oscillator 1 is angularly oscillated so that fluid in a radial through hole 2 receives a centrifugal force. The angular oscillator 1 is used in combination with a resonance oscillation motor that generates angular oscillation. The resonance oscillation motor is incorporated in the pump so that the pump structure and the drive mechanism are integrated. This reduces the size of the pump. Since the angular oscillation is the reciprocating rotation of the angular oscillator 1 within an oscillation range smaller than 360°, a suction pipe 8 can be connected to the radial through hole 2 used in the angular oscillation. This eliminates the necessity for providing a shielding structure.;COPYRIGHT: (C)2011,JPO&INPIT
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