| 摘要 |
A filter assembly comprises a tubular fitler medium (10) with first and second ends, and two end caps (11, 12) that close and seal against respective ones of the ends. Each end cap carries a knife edge wall (21, 22, 34, 35) that penetrates into the associated end of the filter medium (10) so as to create the seal. The end caps are fixable to one another by a snap-fit mechanism (13, 29) that can comprise members integral with the end caps (11, 12). Another filter assembly has generally segmental shape filter media (84) arranged around an axis and fitting into a cylindrical housing. The shape of the media (84) allows a greater packing density of filter material to be achieved in the housing than would be the case with cylindrical shaped filter media. Other shapes of media are contemplated also providing increased packing densities. The filter media may be formed from depth filter media. |
