| 摘要 |
A gas permeable filter element formed solely from filter material defines a substantially cylindrical inner filter element and a substantially cylindrical outer filter element joined together by an end filter element. The outer filter element is radially spaced and concentric with said inner filter element, so that the inner and outer filter elements define an annulus having an inlet end. A particulate laden gas stream directed into the open end of the annulus defined by the inner and outer filter elements passes through either the inner filter element, the outer filter element, or the end filter element.
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