Fluid handling – Flow affected by fluid contact – energy field or coanda effect – Device including passages having v over t configuration
Patent
1983-10-31
1985-08-13
Chambers, A. Michael
Fluid handling
Flow affected by fluid contact, energy field or coanda effect
Device including passages having v over t configuration
137829, 137833, F15C 108
Patent
active
045343837
ABSTRACT:
A mechanically offset fluid amplifier for converting the absolute pressure f a pressurized fluid to a differential pressure indicating the pressure of the pressurized fluid relative to a predetermined set point pressure. The device includes two outlets separated by a splitter, a supply nozzle for directing a jet of the pressurized fluid toward a first of the two outlets at a velocity determined by the absolute pressure, and control elements for deflecting the jet toward the second outlet such that as the jet velocity increases from zero, the deflection of the jet increases to a maximum value and then decreases until the differential pressure between the two outlets is equal to zero when the absolute pressure of the pressurized fluid is equal to the predetermined set point pressure. The control elements includes two control inlets disposed on opposite sides of the jet and connected to a common source of control fluid through respective fluidic resistances, the second control inlet being disposed on the same side of the jet at the second outlet. The first and second control inlets include respective first and second forward control edges which are asymmetrically disposed on opposite sides of the jet so that the second control edge is disposed closer to the supply nozzle centerline than the first control edge.
REFERENCES:
patent: 3420255 (1969-01-01), Wilkerson
patent: 3529612 (1970-09-01), Rausch
patent: 4369811 (1983-01-01), Monion et al.
Drzewiecki Thadeusz M.
Phillippi R. Michael
Chambers A. Michael
Elbaum Saul
Gibson Robert P.
Lane Anthony T.
The United States of America as represented by the Secretary of
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