Low frictional loss rotary vane gas compressor having superior lubrication characteristics
US4521167A · kind A · utility
Inventors
Key dates
| Filing date | Apr 8, 1983 |
| Grant date | Jun 4, 1985 |
| Priority date | — |
| Expiry date | Apr 8, 2003 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C29/023
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A low frictional loss, rotary vane gas compressor utilizing a housing having a generally elliptical cavity therein, and a rotor disposed in the cavity, with the axis of rotation of the rotor being offset from the central axis of the cavity. The housing has an inlet passage and a discharge passage, each in contact with the cavity, with the rotor having a plurality of radial slots in equally spaced relation about its periphery. A slidable vane is disposed in each of these slots, with the outer tip of each vane being in close proximity to an inner stator wall that defines the outer boundary of the cavity. The vanes serve to define a plurality of chambers in the cavity, which chambers undergo significant volume changes as they move about the cavity during rotation of the rotor, the vanes thus cooperating with the inner stator wall to compress gas entering the inlet passage, such that as it leaves through the discharge passage, it is at a higher pressure. Means provide a film of lubricant on the inner stator wall, with the outer tips of the vanes each possessing a compound contour that interacts with the film of lubricant to effect a good seal with the inner stator wall, while minimizin…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.