Hepa filter unit having a metallic membrane

Details Hepa filter unit having a metallic membrane Hepa filter unit having a metallic membrane

1992-01-06

1992-10-27

Hart, Charles

Gas separation

With means securing or retaining separating media

Unit or cohesive sheet-like media in flow line or frame

55500, 55521, 55523, B01D 4610

Patent

active

051585863

ABSTRACT:
A submicron particle filter unit of the Hepa type adapted to be interposed between a source of pressurized gas and a work-processing region to provide an environment therefor free of particles and other contaminants. The membrane of the unit is fabricated from a continuous, elongated, porous metal sheet accordion-folded to define a uniform series of pleats forming a media pack having an entry and an exit face, the pack being clamped with gaskets between the side plates of a frame or welded or otherwise joined thereto. Pressurized gas from the source applied to the entry face of the pack is filtered therethrough to yield at its exit face a laminar flow of gas which creates a clean environment for the work-producing region.

REFERENCES:
patent: 3248183 (1966-04-01), Powell et al.
patent: 4114794 (1978-09-01), Storms
patent: 4122015 (1978-10-01), Oda et al.
patent: 4687579 (1987-08-01), Bergman
patent: 4903617 (1990-02-01), Weber et al.
Astrocel Brochure No. CAD-1-110-E, American Air Filter, Jul. 1984.

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