US 6,806,604 B2 · Centrifuge with a magnetically stabilized rotor for centrifugal goods

Abstract

A centrifuge with a rotor set-up having at least one magnetic bearing is invented to operate a novel centrifuge. The rotor arrangement is connected with at least one permanent magnet configuration which is radially separated by small gap from a passive superconducting magnet stator. The permanent magnets which are adjusted in such a way that the escaping magnetic flux penetrates the adjacent surface of the passive superconducting magnet stator at a substantially perpendicular orientation. A driving motor unit, preferably in the form of a contactless induction engine, ensures a free and frictionless rotation. The passive superconducting magnet stator is comprised a melt textured superconducting YBCO material of high critical current density which can be cooled below its critical temperature of T=92 K using an integrated cryogenic unit to obtain the superconducting state. The stator has a preferred shape of a cylinder or hollow cylinder.

Claims24

Dependent claims

A centrifuge comprising:

a rotor assembly rotatable about a rotor axis, the rotor assembly being configured to hold materials for separation;
a first superconducting magnetic bearing comprising;
a first permanent magnet configuration coupled with the rotor assembly so as to rotate concurrently with the rotor assembly;
and
a passive first superconducting magnet stator being spaced apart from the first permanent magnetic configuration and the rotor assembly, the first superconducting magnet stator and first permanent magnet configuration being sufficiently close together to produce a magnetic field interaction therebetween;
and
a motor coupled with the rotor assembly for selectively rotating the rotor assembly,
wherein the first permanent magnet configuration comprises an integrated lower part of the rotor assembly and wherein the first permanent magnet configuration comprises a first permanent magnet concentrically disposed within a second permanent magnet.

5 more elements

Dependencies are inferred from the claim text.

Centrifuge with a magnetically stabilized rotor for centrifugal goods

Life of this patent

Centrifuge with a magnetically stabilized rotor for centrifugal goods

Life of this patent

Abstract

Claims24