Rotary screw machine with rotor thrust load balancing
US3947078A · kind A · utility
15Cited by
1References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 24, 1975 |
| Grant date | Mar 30, 1976 |
| Priority date | — |
| Expiry date | Apr 24, 1995 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2360/43
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A bearing assembly for the rotors of a rotary screw variable volume gas machine, as a compressor expander or fluid pump, includes opposed thrust and high radial load bearings at the high pressure end of each rotor and high thrust bearings for each rotor shaft at the low pressure end. An axial force is applied to each of the bearings at the low pressure end, opposing the axial load on the screws from the working fluid, tending to equalize the thrust load on the bearings at the high pressure end so that bearing wear is relatively even and bearing life is improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.