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US 5,795,138 AGranted
Compressor
OwnerRichard Gozdawainventor
Life of this patent
Estimating the term…
Abstract
A compressor includes impeller rotors, a rotatable shaft upon which the impeller rotors are mounted, and tilting pad journal bearings having a ceramics bearing surface. The rotatable shaft is journalled by the tilting pad journal bearings which is arranged to be self generating and air or gas lubricated. The tilting pad self generating bearings reduce frictional losses and the ceramics bearing surfaces prevent problems commonly caused by high speed and temperature generated at bearings.
Claims10
A compressor comprising:
- a) a rotatable shaft having spaced apart portions;
- b) drive means arranged to rotate said shaft, said drive means comprising an electric motor having a rotor mounted on said shaft;
- c) a plurality of impeller rotor stages mounted on respective spaced apart portions on the shaft;
- d) intercooler means provided intermediate said impeller rotor stages;
- and
- e) journal bearing means for said shaft, said journal bearing means comprising at least one tilting pad journal bearing arranged to be self generating and air or gas lubricated, and having bearing pads provided with a ceramics bearing surface.
3 more elements
Dependencies are inferred from the claim text.