Clean room air filtering
    3.
    发明授权
    Clean room air filtering 失效
    洁净室空气过滤

    公开(公告)号:US5626820A

    公开(公告)日:1997-05-06

    申请号:US161931

    申请日:1993-12-02

    摘要: The invention features a clean room and a chemical air filter suitable for use in the air handling system of the clean room directly upstream of high-efficiency particulate air (HEPA) filters. The chemical filter is of the pleated filter type comprising an air permeable, relatively thick web of non-woven fibrous carrier material of pleated form. The web includes a matrix formed of a large multiplicity of synthetic fibers and is characterized in that activated carbon particles are distributed throughout the web, bound in the interstices of the matrix in a manner preventing loss to the air of particles in quantity substantially detrimental to the performance of the HEPA filter. The activated carbon particles are of the type selected to remove the predetermined gas-phase contaminant from the air from the source. The invention also features a non-off gassing filter casing that may easily be installed into existing clean room air handling systems.

    摘要翻译: 本发明具有洁净室和适用于直接在高效颗粒空气(HEPA))过滤器上游的洁净室的空气处理系统中的化学空气过滤器。 化学过滤器是褶状过滤器型,包括透气的,相对较厚的褶皱形式的非织造纤维载体材料网。 纤维网包括由大量合成纤维形成的基质,其特征在于活性炭颗粒分布在整个幅材上,以基质的空隙结合在一起,以防止对空气中的空气的损失基本上不利于 HEPA过滤器的性能。 活性炭颗粒是选自从来自空气的预定气相污染物的类型。 本发明还具有可以容易地安装到现有洁净室空气处理系统中的非关闭放气过滤器壳体。