Multistage helical screw compressor with liquid injection
US4123203A · kind A · utility
8Cited by
6References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1977 |
| Grant date | Oct 31, 1978 |
| Priority date | — |
| Expiry date | Oct 14, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05B2250/25
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a two-stage liquid injected helical screw gas compressor a bypass line with a check valve is provided between compressor stages for delivering compressed gas from the first stage directly to the compressed gas receiver and liquid reservoir. Bypass of gas to the reservoir at startup assures pressurization of the reservoir and early flow of liquid to the first and second stage compression chambers. As the working pressure in the second stage discharge line increases above first stage discharge pressure, the check valve closes and all flow from the first stage is conducted through the second stage compression chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.