| 摘要 |
A compact filter assembly for providing a large filter area in a relatively small and inaccessible space, the assembly includes a housing having an air inlet and air outlet means with a plurality of filter elements in the housing separating the air inlet and air outlet means. Each filter element includes a sheet of pleated filter media arranged in a closed loop to form a rigid hollow columnar member which is sealably secured at each end to the housing, with the interior of each filter element defined by the hollow columnar member in communication with the air outlet means. Thus, air entering the air inlet of the housing flows radially inward through the columns of filter media into the interior of the elements and axially therefrom through the air outlet means.
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