Rotary-vane compressor
US4621986A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 4, 1985 |
| Grant date | Nov 11, 1986 |
| Priority date | — |
| Expiry date | Dec 4, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C28/06
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A rotary-vane compressor wherein the pump housing is formed with a first by-pass passage which is open at its one end to the first intake port of the two intake ports which are open to the pump chamber formed in the rotor and at its the other end with the high-pressure chamber formed in the main housing, and provided with first by-pass valve means so that the first by-pass passage is opened when an external signal is supplied, and the first ring plate mounted on one side of the cam ring is provided with an one-way flow check valve to block fluid communication between the first intake port and the low-pressure chamber to which a new refrigerant is conducted, only when the first by-pass passage is opened.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.