Self-pressurizing floating gas bearing having a magnetic bearing therein
AssigneeSulzer Brothers Limited
InventorWerner Purtschert
Life of this patent
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Abstract
The bearing is a composite bearing comprised of a self-pressurizing floating gas bearing and a permanent magnet bearing. The permanent magnet bearing serves to support the bearing body in spaced relation to the support body at least during the starting up of the bearing body from a standstill condition to a running down of the bearing body to the standstill position. The bearing may be constructed as a radial or thrust bearing. The permanent magnet bearing may be located within or without the gas bearing.
Claims15
A self-pressurizing floating gas bearing comprising
- a support body having a first bearing surface thereon;
- a bearing body having a second bearing surface facing said first bearing surface, said bearing body being movably mounted with respect to said support body;
- and
- an auxiliary permanent-magnet bearing forming a magnetic field to at least compensate the weight of said bearing body whereby, said bearing body exerts no pressure or only a negligible pressure on said first bearing surface.
A gas bearing comprising
- a support body having a first bearing surface,
- a shaft rotatably mounted with respect to said support body and having a second bearing surface facing said first bearing surface to define a gap for a flow of gas therebetween during rotation of said shaft;
- and
- an auxiliary permanent magnetic bearing forming a magnetic field to at least compensate the weight of said shaft whereby said shaft is spaced from said first bearing surface at start up from and run down to a standstill position.
A self-pressurizing floating gas bearing comprising
- a support body having a first bearing surface thereon;
- a bearing body having a second bearing surface facing said first bearing surface, said bearing body being movably mounted with respect to said support body;
- and
- an auxiliary permanent-magnet bearing neutralizing at least part of the weight of said bearing body.
Dependencies are inferred from the claim text.