Coil type filter

Details Coil type filter Coil type filter

1975-12-12

1979-01-09

Hart, Charles N.

Liquid purification or separation

With heater or heat exchanger

For filter

55269, 55387, 210274, 210289, 210290, B01D 2314, B01D 3518

Patent

active

041337620

ABSTRACT:
A coil type filter for diversified applications comprises a spiral wound coil having an inlet and an outlet at opposite ends thereof, said inlet and outlet apertures having a screen positioned to retain the filtering element within the coil. Couplings are provided on the exterior of the coil at each end for connection to other portions of a fluid flow system. The interior of the coil is partially filled with activated carbon granules which perform the filtering operation. In a modification of the invention, the coil would be positioned within a housing which contains a circulating fluid for maintaining the temperature at predetermined levels. In another embodiment of the invention, the spiral wound coil is mounted within a housing with the inlet and outlet both extending outwardly from the same portion of the housing. The filter outlet is a substantially straight tube extending from the interior end portion of the coil substantially parallel to the axis of said coil and along its entire length. A thermostatically controlled heating element may be mounted within the housing to control the temperature of the fluid within the coil.
The coil type filter has wide application in water purification, medical and scientific applications, waste water treatment, gasoline and solvent vapor adsorption and filtration of various fluids and gases. The filter has the advantage of compactness with a long length of tubing fitting into a confined space thereby providing an extended contact time with the fluid or gas being filtered. The filter is also relatively inexpensive and adaptable to a broad variety of customer designs and may be readily reactivated by reverse flow of the fluids.

REFERENCES:
patent: 2718904 (1955-09-01), Polye
patent: 3463615 (1969-08-01), Sochor
patent: 3834130 (1974-09-01), Bissada et al.

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