US 4,378,983 AGranted

Housing for mounting HEPA filters

AssigneeThe Commonwealth of Australia

InventorDavid T. Martin

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Abstract

A housing for mounting HEPA filters includes an open-ended tubular casing (12) and, within said casing, slide structure (24) for slidably mounting a HEPA filter therein from one of the ends of the casing. Baffle means (18) divides the interior of the casing into respective chambers (20, 22) which, on mounting of the filter in the slide structure (24), are gastight isolated from each other except by way of the filter and which are accessible from a respective one of the open ends of the casing. Also provided are gas intake/exhaust ports (46, 48) for each of the chambers (20, 22), a pair of cover members (14, 16) for closing the respective open-ends of the casing (12), each of which cover members (14, 16) includes a flange (94) complementary to the associated end of the casing (12), and respective clamp and seal means (100, 84) for clamping the cover members (14, 16) to the casing to effect gastight engagement of the flanges (94) with the respective ends of the casing (12).

Claims16

Dependent claims

A housing for mounting a HEPA filter in an air flow circuit of a building air-conditioning or ventilation system, including an open ended tubular casing;

baffle means formed to define an aperture and disposed to divide the interior of said casing into respective chambers which are accessible from respective open ends of the casing;
gas ports for each of said chambers;
and a pair of cover members for closing the respective open-ends of the casing, each of which cover members includes a flange complementary to the associated end of the casing;
characterized by:
slide structure within one of said chambers for slidably moving a HEPA filter to a position in said one chamber in engagement with said baffle means;
first clamp means for clamping the forward end of the HEPA filter against said baffle means in a gastight engagement about said aperture by pressure applied to the rear end of the filgter;
and
second clamp means, independent of the first, and associated seal means, for clamping the cover members to said casing to effect gastight engagement of said flanges with the respective ends of the casing.

5 more elements

Dependencies are inferred from the claim text.