Liquid purification or separation – Flow – fluid pressure or material level – responsive – Fluid current controlled cyclic system
Patent
1978-01-20
1979-05-22
Hart, Charles N.
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Fluid current controlled cyclic system
210102, 210108, 210333A, 210341, 138 41, B01D 2938, B01D 3512
Patent
active
041558502
ABSTRACT:
A self-cleaning filter device comprises a fluidic oscillator having a pair of passages through which fluid is directed alternately, and filter elements which fluid can flow from said passages to an auxiliary outlet. A main outlet communicates with the passages in such a way that the filter elements do not impede fluid flow to the main outlet. Between each passage and the main outlet is a device which provides a higher impedance to flow from the main outlet to the passages than to flow in the opposite direction, and assists the self-cleaning action of the filter elements by increase the difference between the fluid pressures in the passages.
REFERENCES:
patent: 2670596 (1954-03-01), Whitworth
patent: 2878836 (1959-03-01), Binks
patent: 3016066 (1962-01-01), Warren
patent: 3077903 (1963-02-01), Honsinger
patent: 3388799 (1968-06-01), Rymer
patent: 3630362 (1971-12-01), Matthews
patent: 3868322 (1975-02-01), Orloff
Chemical Engineers' Handbook, 5th Edition, Perry et al., McGraw-Hill Book Co., 1973, pp. 20-102.
Process Control by Power Fluidics, Direct Fluidic Control Symposium, 9/23/75, Inst. of Meas. and Control, pp. 9-1 to 9-18.
Blandford George A.
Orloff George
Rathbone Richard
Watts Peter L.
Hart Charles N.
Lucas Industries Limited
Sadowski David R.
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