Rotary expansible chamber devices – With mechanical sealing – Axially movable end wall or end wall portion
Patent
1998-05-18
2000-04-18
Nguyen, Hoang
Rotary expansible chamber devices
With mechanical sealing
Axially movable end wall or end wall portion
418133, F01C 1908
Patent
active
060507969
ABSTRACT:
A vane pump including a cylindrical rotor rotatable inside of an oval-shaped rotor chamber defined by a cam ring around the rotor. A thrust plate and a pressure plate on opposite sides of the cam ring cover the rotor chamber and are squeezed together by a pressure force attributable to fluid in a discharge chamber of the vane pump at a discharge pressure thereof. Fluid at the discharge pressure of the pump is ported to an annular first longitudinal balance chamber between the pressure plate and an end of the rotor facing the pressure plate and to an annular second longitudinal balance chamber between the thrust plate and an opposite end of the rotor facing the thrust plate. A pressure force on the pressure plate attributable to fluid in the first balance chamber balances a fraction of the pressure force on the pressure plate attributable to fluid in the discharge chamber to reduce flexure of the pressure plate into the rotor chamber. A pressure force on the rotor attributable to fluid in the second balance chamber is equal to the pressure force on the rotor attributable to fluid in the first balance chamber for longitudinal static equilibrium.
REFERENCES:
patent: 360565 (1887-04-01), Dawson
patent: 621193 (1899-03-01), Wilson
patent: 1635523 (1927-01-01), Wilson
patent: 2283033 (1942-05-01), Beach
patent: 2447961 (1948-08-01), Rodway
patent: 3207077 (1965-09-01), Zeigler et al.
patent: 3523746 (1970-08-01), Dadian et al.
patent: 3834846 (1974-09-01), Linder et al.
patent: 3973881 (1976-08-01), Melchinger
patent: 4386891 (1983-06-01), Riefel et al.
patent: 4416598 (1983-11-01), Merz
patent: 4795325 (1989-01-01), Kishi et al.
patent: 5266018 (1993-11-01), Niemiec
Wong Albert Cheuk-Yin
Wong Tom Cheuk-In
Anderson Edmund P.
General Motors Corporation
Nguyen Hoang
LandOfFree
Vane pump does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Vane pump, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vane pump will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2331955