Pumps – One fluid pumped by contact or entrainment with another – Jet
Patent
1981-02-02
1983-07-26
Look, Edward K.
Pumps
One fluid pumped by contact or entrainment with another
Jet
417178, 417186, 417196, F04F 522
Patent
active
043952011
ABSTRACT:
There is provided an in-line, two-stage, variable-bypass injector pump for controllably admixing a secondary fluid to a main fluid. The pump comprises a housing connectable into a pipe line carrying the main fluid and a main venturi extending along the central axis of the housing having an entrance and a throat and exit portion. The pump also includes a secondary venturi off center but substantially parallel to the central axis. The exit portion of the secondary venturi leads into the throat portion of the main venturi. One end of a connector leads into the throat portion of the secondary venturi and the other end of the connector is connectable to a source of the secondary fluid. An eccentrically located passage way permits a variable proportion of the main fluid to flow from one end of the housing to the other end thereof, while bypassing the main venturi. The bypassed flow is controlled by means of a shutter between a maximum and zero flow. By selectively creating a misalignment between two different portions of the passage way, a variable constriction is produced in the passage way, which constriction, when maximum, results in zero bypass flow and, when zero, results in maximum bypass flow.
REFERENCES:
patent: 440624 (1890-11-01), Eberman
patent: 1122148 (1914-12-01), Gonzales
patent: 3282227 (1966-11-01), Nielsen
patent: 3338173 (1967-08-01), Gunzel et al.
Look Edward K.
Schaffer Murray
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