Compliant hybrid gas journal bearing using integral wire mesh dampers
US8083413B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 23, 2007 |
| Grant date | Dec 27, 2011 |
| Priority date | — |
| Expiry date | Jun 6, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2360/44
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A compliant hybrid gas journal bearing includes compliant hybrid bearing pads having a hydrostatic recess and a capillary restrictor for providing a flow of pressurized gas to the bearing. The bearing also includes an inner rim adjacent the bearing pads, an outer rim and a damper bridge between the inner and outer rims. The damper bridge has an axial length that is less than an axial length of the bearing pads and the outer rim to form a damper cavity on each side of the damper bridge. An integral wire mesh damper is situated within the damper cavity on each side of the damper bridge. Integral centering springs are located between the inner and outer rims to provide radial and rotational compliance to the bearing pads. The oil-free bearing design addresses the low damping and low load capacity characteristics that are inherent in present day compliant air foil bearing designs, while retaining the compliance to changes in rotor geometry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.