Control system for controlling the internal volume in a rotary compressor
US4877380A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 2, 1988 |
| Grant date | Oct 31, 1989 |
| Priority date | — |
| Expiry date | Mar 2, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C28/125
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Adjustable valve bodies are used on the outlet side for controlling the internal volume of a rotary compressor. External control means, often of an extremely complicated nature, have been used to control the internal volume in the rotary compressor. By allowing the different pressure levels of the rotary compressor directly influence a control section (1), the position of the valve body (3) can be controlled by an operating section (2). In the control section a spring pressure and a medium pressure (9) from the compressor are balanced by a plunger (6) against a pressure from the high-pressure side (19) of the compressor. The position of the plunger (6) then determines control of the internal volume via the setting of the valve body (3) connected to the operating device (2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.