Fluid handling – Flow affected by fluid contact – energy field or coanda effect – Means to regulate or vary operation of device
Patent
1987-10-13
1988-03-29
Chambers, A. Michael
Fluid handling
Flow affected by fluid contact, energy field or coanda effect
Means to regulate or vary operation of device
137835, 137840, 137468, F15C 300
Patent
active
047336951
ABSTRACT:
A modified laminar proportional amplifier with feedback for converting the absolute pressure of 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 a feedback path for deflecting the jet toward the second outlet such that as 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 feedback path includes an adjustable fluidic resistor and a temperature compensated flow controller for making the device insensitive to temperature.
REFERENCES:
patent: 3578010 (1971-05-01), Campagnuolo
patent: 4246935 (1981-01-01), Mon
patent: 4369811 (1983-01-01), Manion et al.
patent: 4523611 (1985-06-01), Drzewieki
patent: 4534383 (1985-08-01), Phillippi et al.
Mon, "Temperature Compensation of Laminar Fluidic Components and Systems", roceedings of the 20th Anniversary of Fluidic Symposium, ASME 1980 Nov. 16-21, pp. 95-102.
Chambers A. Michael
Elbaum Saul
McDonald Thomas E.
Miller Guy M.
The United States of America as represented by the Secretary of
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