Method of pumping with a vane-type pump having a flexible cam ring
US5630318A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1995 |
| Grant date | May 20, 1997 |
| Priority date | — |
| Expiry date | Jun 7, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2039/105
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method of pumping at a variable delivery flow rate and pressure includes rotating a pump rotor having a plurality of radially extending vanes inside a flexible cam ring with an input shaft and sweeping a swept volume within the flexible cam ring with the vanes while contacting an inside surface of the flexible cam ring with outside edges of the vanes. The swept volume is sealed on opposite axial sides thereof with a port plate on one side and a side seal plate on the side opposite the port plate, and opposite sides of the flexible cam ring and the vanes are engaged with the plates. Fluid is drawn into the swept volume within the cam ring through a first set of ports in the port plate by rotating the vanes into a suction region within the cam ring having an increasing radius in the direction of the vane rotation. The fluid is pressurized in a pressure region having a decreasing radius in the direction of vane rotation by rotating the vanes into a decreasing volume of the pressurizing region within the cam ring between the intake port and an abutment on the cam ring sealed to a output rotor, and the pressurized fluid is exhausted through a second set of ports in the port plate, cir…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.