Centrifugal separator and a method of detecting unbalance of a r

Details Centrifugal separator and a method of detecting unbalance of a r Centrifugal separator and a method of detecting unbalance of a r

1996-05-22

1998-04-14

Cooley, Charles E.

Imperforate bowl: centrifugal separators

With condition responsive means

For controlling drive of driven means within bowl

494 10, 494 37, B04B 1300

Patent

active

057386226

ABSTRACT:
A centrifugal separator comprising: a rotor for containing a sample; a rotating unit; a detection circuit for detecting a distance between a reference position and a position of the rotor and generating a distance detection signal; a rectifying circuit for half-wave rectifying the distance detection signal; a judging circuit for judging the distance detection signal from the rectifying circuit; and a controller for controlling the rotating unit in accordance with a judging result of the judging circuit and a corresponding method are disclosed. The judging circuit judges whether the distance is in a balanced condition of or an unbalance condition of the rotor. A centrifugal separator comprising: the rotor; the rotating unit; a detection circuit, having a given detection range, for detecting a distance between a reference position and a position of the rotor and generating the distance detection signal, the given range covering a deflection range of the rotor due to whirling on the side of the detection circuit with respect to a rotational axis of the rotor; the judging circuit for judging the detection signal and the controller for controlling the rotating unit and a corresponding method are also disclosed. The detection range may be assigned to an inhibit deflection range due to whirling of the rotor.

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