Rotor support and vacuum pump with such a rotor support
AssigneeEdwards Limited
InventorNigel Paul Schofield
Life of this patent
Estimating the term…
Abstract
A rotor support configured to rotatably mount a rotor shaft in a vacuum pump is disclosed. The rotor support comprises: a rolling bearing for rotatably supporting the shaft; an insert and at least one resilient damping member, the insert and the at least one resilient damping member surrounding the rolling bearing. The insert comprises inner and outer annular portions connected by a plurality of flexible members, the plurality of flexible members being configured to flex in a radial plane and resist movement in an axial plane, thereby absorbing radial movement of the shaft. The at least one resilient damping member is formed of an elastomeric material configured to flex in both a radial and axial direction.
Claims15
A rotor support configured to rotatably mount a rotor shaft in a vacuum pump, said rotor support comprising:
- a rolling bearing for rotatably supporting said shaft;
- an insert and at least one resilient damping member, said insert and said at least one resilient damping member surrounding said rolling bearing;
- wherein
- said insert comprises inner and outer annular portions connected by a plurality of flexible members, said plurality of flexible members being configured to flex in a radial plane and resist movement in an axial plane, thereby absorbing radial movement of said shaft;
- and
- said at least one resilient damping member is formed of an elastomeric material configured to flex in both a radial and axial direction;
- wherein
- said at least one resilient damping member is configured to support said insert and is in at least one of the following configurations with said insert:
- at least one of said at least one resilient damping member is located between said inner annular portion of said insert and said rolling bearing;
- and
- said outer annular portion of said insert is located between at least one of said at least one resilient damping member and said rolling bearing.
Dependencies are inferred from the claim text.