Gear pump having fluid deaeration capability

Details Gear pump having fluid deaeration capability Gear pump having fluid deaeration capability

1978-06-22

1980-11-04

Vrablik, John J.

Rotary expansible chamber devices

Grooved abutting cylinder-rotating member end surfaces

418206, F04C 218, F04C 1500

Patent

active

042317266

ABSTRACT:
A gear pump (10) has a pair of intermeshing gears (12,14) located in a corresponding pair of intersecting cavities (16,18) in a housing (20), and air bleed passages (60) are defined in the housing (20) for passing entrained air collected in the fluid at the tooth roots (42) of the gears (12,14) as a result of centrifugal force away from a preselected region (61,62) of each of the gear cavities (16,18). Preferably, a pair of arcuate air bleed passages (64) are formed in the housing (20) and are located in a trailing portion (62) of the preselected region, and a pair of grooves (70) transmit pressure from a discharge opening (48) back to the tooth roots (42) to positively encourage movement of fluid with entrained air toward the arcuate air bleed passages (64).

REFERENCES:
patent: 2345975 (1944-04-01), Herman
patent: 2541010 (1951-02-01), Ungar
patent: 2923249 (1960-02-01), Lorenz
patent: 3057303 (1962-10-01), Lauck
patent: 3174435 (1962-08-01), Sisson et al.
patent: 3204564 (1965-09-01), Eltze
patent: 3267862 (1966-08-01), Mosbacher
patent: 3280756 (1966-10-01), Gordon
patent: 3291060 (1966-12-01), Bottoms
patent: 3313238 (1967-04-01), Muller et al.
patent: 3526470 (1970-09-01), Swanson
patent: 3558247 (1971-01-01), Gaertner
patent: 3898025 (1975-08-01), Bottoms

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