Electric switch gauge for screw compressors
US6139280A · kind A · utility
13Cited by
18References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 21, 1998 |
| Grant date | Oct 31, 2000 |
| Priority date | — |
| Expiry date | Jan 21, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C28/125
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A control apparatus, for measuring pressure in relation to a rotary screw compressor with capacity control means and a prime mover, including a pressure sensor to monitor the prime mover manifold pressure, and a series of relays which when tripped by the pressure sensor will engage a pressure mechanism to engage the capacity control means on the compressor. The pressure mechanism may be a hydraulic or a pneumatic pressure mechanism and the apparatus may further include a second pressure sensor to monitor the inlet gas pressure to the compressor and a third pressure sensor to monitor discharge pressure of the gas compressor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.