Pump with magnetic bearings

Details Pump with magnetic bearings Pump with magnetic bearings

1983-10-19

1985-09-17

Hershkovitz, Abraham

Rotary kinetic fluid motors or pumps

Smooth runner surface for working fluid frictional contact

415119, 415170R, 308 10, F01D 136, F04D 2966

Patent

active

045417725

ABSTRACT:
A turbo-molecular pump with passive, radial magnetic bearings and axial bearings has both direct and indirect damping arrangements for unwanted oscillations. Direct damping is produced by eddy currents produced in copper rings around the magnetic stators of the magnetic bearings. Indirect damping is provided through a platform, carried by springs and connected to the pump housing by oscillation dampers.

REFERENCES:
patent: 3399827 (1968-09-01), Schwartzman
patent: 3759626 (1973-09-01), Becker
Poubeau P.C., "Satellite Flywheels with Magnetic Bearings and Passive Radial Centering", J. Spacecraft, vol. 17, No. 2 (3-4 1980), pp. 93-98.

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