Variable capacity vane compressor
US4737081A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 1987 |
| Grant date | Apr 12, 1988 |
| Priority date | — |
| Expiry date | May 29, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C28/14
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A variable capacity vane compressor has a pressure chamber formed in one of side blocks of a cylinder and communicating a zone under lower pressure with a zone under higher pressure, and at least one second inlet port the opening angle of which is variable in response to a difference between pressure within a first pressure chamber of the pressure chamber and pressure within a second pressure chamber of same. The second pressure chamber is communicated with the zone under higher pressure via a high-pressure communication passage and with the zone under lower pressure via a low-pressure communication passage. A control valve device extends across the high-pressure communication passage and the low-pressure communication passage, and is disposed to close the low-pressure communication passage and simultaneously open the high-pressure communication passage when pressure within the zone under lower pressure exceeds a predetermined value, and to open the low-pressure communication passage and simultaneously effect one of closing and reduction of the opening area of the high-pressure communication passage when the pressure within the zone under lower pressure is below the predetermined v…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.