Integrated variable speed compressor drive system
US5125806A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1990 |
| Grant date | Jun 30, 1992 |
| Priority date | — |
| Expiry date | Jun 18, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/70
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An integrated variable speed compressor drive system for driving a compressor which compresses air from an air source and outputs compressed air. The integrated variable speed compressor drive system includes a hydrostatic transmission coupled to a drive shaft for converting a varying rotational speed of the drive shaft into a first rotational speed. A differential coupled to the hydrostatic transmission and the drive shaft is included in the invention for outputting in response to the varying rotational speed of the drive shaft and the first rotational speed of the hydrostatic transmission, a second rotational speed. The differential is coupled to the compressor and drives the compressor using the second rotational speed. The second rotational speed is related to the first rotational speed output by the hydrostatic transmission. The hydrostatic transmission in response to a control signal supplied thereto varies the first rotational speed to thereby control the second rotational speed which drives the compressor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.