Jet pump with stabilized mixing of primary and secondary flows

Details Jet pump with stabilized mixing of primary and secondary flows Jet pump with stabilized mixing of primary and secondary flows

1989-01-09

1990-07-10

Smith, Leonard E.

Pumps

One fluid pumped by contact or entrainment with another

Jet

417196, 181218, 181270, F04F 300

Patent

active

049403923

ABSTRACT:
A jet pump comprises a nozzle (1) for a high speed primary flow, a mixing tube (2) into which the primary flow is directed by the nozzle (1), and an inlet (3) to the mixing tube (2) for a secondary flow, the inlet (3) surrounding the primary flow nozzle (1). Means (2') is provided for changing the cross section of the mixing tube (2) abruptly in order to produce a rise in static pressure immediately downstream, thereby increasing mixing of the primary and secondary flows, stabilizing the mixing process and enabling significant noise reduction when used in engine testing apparatus.

REFERENCES:
patent: 2180259 (1939-11-01), Sargent
patent: 2358386 (1944-09-01), Doll
patent: 2375180 (1945-05-01), Vigo
patent: 2571871 (1951-10-01), Hayes
patent: 3494296 (1970-02-01), Gluntz
patent: 3545886 (1970-12-01), Chalom
patent: 3942724 (1976-03-01), Mocarski
Russian-English Chemical and Polytechnical Dictionary (Third Edition) p. 245, 1975.

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