Pumps – One fluid pumped by contact or entrainment with another – Jet pump with motive fluid generating pump
Patent
1975-08-06
1977-07-05
Vrablik, John J.
Pumps
One fluid pumped by contact or entrainment with another
Jet pump with motive fluid generating pump
417186, 417189, F04B 2304, F04F 548
Patent
active
040337065
ABSTRACT:
A fluid delivery system and, more particularly, a system for delivering fuel to an aircraft engine. A positive displacement pump delivers fuel to the engine and is supplied by an ejector boost pump connected to a fuel tank and having a nozzle supplied with fuel delivered by the fuel pump for drawing fuel from the tank and increasing the pressure of the fuel prior to delivery through interstage components to the inlet of the fuel pump. Valve means responsive to the pressure differential across the nozzle of the ejector boost pump operates to maintain a uniform rate of fuel flow through the nozzle. In certain embodiments of the fluid delivery system, the fuel pump is provided with auxiliary inlets for delivery of fuel to pumping chambers out of communication with the main inlet of the pump for improved operation of the fuel pump and avoidance of problems encountered from the presence of vapor in the fuel.
REFERENCES:
patent: 2622531 (1952-12-01), Brady
patent: 2665704 (1954-01-01), Kanuch
patent: 2812715 (1957-11-01), Redding et al.
patent: 3043107 (1962-07-01), Magnus
patent: 3182596 (1965-05-01), Prijatel
patent: 3532441 (1970-10-01), Schofield
patent: 3551073 (1970-12-01), Petrovits
Schaefer John G.
Whitesel Terry L.
Ross Thomas I.
Sundstrand Corporation
Vrablik John J.
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