Variable volume ratio screw compressor with step control
US4678406A · kind A · utility
15Cited by
11References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1986 |
| Grant date | Jul 7, 1987 |
| Priority date | — |
| Expiry date | Apr 25, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C28/125
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An axial flow helical screw compressor with a slide valve and slide stop mounted end to end in communication with the intermeshing rotors has means for changing the volume ratio during operation by stepwise movement of the slide stop and for changing the capacity during operation in infinitely variable fashion, both in response to system operating conditions. In the event of interference between the movements of the slide stop and slide valve, the components are designed so that the movements of the slide stop overpowers that of the slide valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.