| 摘要 |
PCT No. PCT/AU80/00078 Sec. 371 Date Jun. 15, 1981 Sec. 102(e) Date Jun. 15, 1981 PCT Filed Oct. 24, 1980 PCT Pub. No. WO81/01109 PCT Pub. Date Apr. 30, 1981.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).
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