Vane pump having spokes with channel-shaped vanes

Details Vane pump having spokes with channel-shaped vanes Vane pump having spokes with channel-shaped vanes

1984-04-13

1985-07-16

Husar, Cornelius J.

Pumps

Diverse pumps

Moving partition or cylinder of rotary pump forms or...

418268, F04B 2312

Patent

active

045293619

ABSTRACT:
A vane pump (2), with undervane pumping capability, has a housing (4,14) within which a cam ring (16) is mounted. The cam ring has a cam surface which defines a pumping cavity and which includes two diametrically opposed inlet arcs (48, 50), two diametrically opposed discharge arcs (38, 40) and seal arcs (56, 58, 60, 62) disposed between the inlet arcs and discharge arcs. A rotor (12), mounted for rotation within the housing, carries a plurality of spokes (22). Mounted upon the spokes for radially outward and inward movement are channel-shaped vanes (28) having arcuate tips (46) for engaging the cam surface. Variable volume chambers (94), which provide undervane pumping, are formed between the radially outer ends of the spokes and the vanes. The variable volume chambers communicate with intervane volumes (93) through grooves (86) on the spokes. The vane tips engage seal arcs along a line of contact (76) selected to insure that the vanes are pressure balanced.

REFERENCES:
patent: 741053 (1903-10-01), Mattill
patent: 2174664 (1969-10-01), Korany
patent: 3009420 (1957-07-01), Livermore et al.
patent: 3081706 (1963-03-01), Drutchas et al.
patent: 3102493 (1963-09-01), Davin
patent: 3431861 (1969-03-01), Martin
patent: 3936246 (1976-02-01), Beitzel

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