Bearings – Rotary bearing – Fluid bearing
Patent
1997-09-19
1999-07-06
Hannon, Thomas R.
Bearings
Rotary bearing
Fluid bearing
384105, F16C 3206
Patent
active
059189851
ABSTRACT:
A compliant foil fluid film thrust bearing including a thrust disk rotor, fluid foils, spring foils, a thrust plate, and a housing thrust surface The non-rotating but compliant fluid foils, mounted on the thrust plate and/or housing thrust surface and positioned adjacent to the thrust disk, have open faced channels that induce regenerative vortex flow patterns in the process fluid. The multiple spring foils together provide a tilting pad support for the fluid foils but allow them to follow the axial and overturning motion of the thrust disk. The interaction of the tilting pad underspring supports and the circumferential fluid pressure gradients in the process fluid between the fluid foils and the thrust disk rotor assure that the fluid foils will assume hydrodynamically efficient convex shapes on the surfaces adjacent to the rotor regardless of the load applied to the thrust bearing.
REFERENCES:
patent: 4597677 (1986-07-01), Hagiwara et al.
patent: 4871267 (1989-10-01), Gu
patent: 5110220 (1992-05-01), Gu
patent: 5209579 (1993-05-01), Matake
patent: 5318366 (1994-06-01), Nadjafl
patent: 5498082 (1996-03-01), Nadjafl
patent: 5529398 (1996-06-01), Bosley
Capstone Turbine Corporation
Hannon Thomas R.
Miller Albert J.
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