Patent ID: 8678781

Claim:
An angular oscillation centrifugal pump comprising: a case; an angular oscillator accommodated in the case and rotatable in a reciprocating manner, the angular oscillator having a first magnetic dipole and a pressure feed passage, the pressure feed passage having a pressure feed inlet for receiving fluid and a pressure feed outlet through which the fluid is discharged; a retaining portion that is provided in the case to retain the angular oscillator, the retaining portion retaining the angular oscillator based on magnetic force generated by the first magnetic dipole and including a second magnetic dipole or a magnetic body, the angular oscillator being oscillatable relative to the retaining portion, and the magnetic force defining a rest point of the oscillation of the angular oscillator and a natural frequency of the oscillation, wherein the natural frequency is adjusted by changing at least one of the shapes, arrangement, and the intensity of the first magnetic dipole and the second magnetic dipole, wherein the natural frequency of the oscillation is determined by a restoring force based on magnetic forces of the first and second magnetic dipoles, wherein the natural frequency is not determined by a torsional stiffness; and an electromagnetic coil provided in the case, wherein, when a current that is synchronized with the natural frequency is supplied to the electromagnetic coil, the angular oscillator is resonated, and as a result, the fluid in the pressure feed passage receives centrifugal force and is discharged from the pressure feed outlet.