Water filter with extended operational period

Details Water filter with extended operational period Water filter with extended operational period

1991-01-18

1992-09-22

Dawson, Robert A.

Liquid purification or separation

Particulate material type separator, e.g., ion exchange or...

Pervious divider between and contacting beds

210288, 210349, 210350, 210354, B01D 2402

Patent

active

051494280

ABSTRACT:
A water filter with improved filtration efficiency and extended operational period. The filter includes a cassette member filled with filtration and activation agents, where a water path connecting a water inlet pipe and an open upper end of the cassette member is formed between an outer housing member and the cassette member, while an open lower end is directly connected with the water inlet pipe; a center pipe located inside the cassette member for connecting an inside of the cassette member with a water outlet pipe; and a damper member placed inside the cassette member which is vertically slidable along the center pipe, which divides the inside of the cassette member into an upper filtration chamber connected with the upper end and a lower filtration chamber connected with the lower end, where the water flows through the upper filtration chamber from the upper end and the lower filtration chamber from the lower end alternatively.

REFERENCES:
patent: 2076935 (1937-04-01), Burckhalter
patent: 2638581 (1953-05-01), Marvel
patent: 2668622 (1954-02-01), Irvine et al.
patent: 3167399 (1965-01-01), Hansen, Jr.
patent: 3512645 (1970-05-01), Rosaen

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