| 摘要 |
A filtration system comprising a plurality of filters ( 14, 16, 18, 20 ). Each filter ( 14, 16, 18, 20 ) defines a respective filter flowpath extending adjacent a respective filtration medium ( 24 ) for tangential filtration by the filtration medium ( 24 ) of fluid passing through the filter flowpath. The system also comprises a manifold ( 32 ) connected to each filter ( 14, 16, 18, 20 ), the system being selectively operable in a first state in which the manifold ( 32 ) and the filter flowpaths form part of a first continuous flowpath ( 92, 36, 38, 40, 42, 44, 101, 56, 48, 50, 52, 54, 58, 88 ) around which fluid circulates passing in parallel through the filter flowpaths and a second state in which fluid circulates around a second continuous flowpath ( 94, 82, 86, 98, 101, 48, 58 ) including the filter flowpath of at least one ( 14 ) but not all of the filters, the second continuous flowpath having a lower volume than the first continuous flowpath and fluid passing into the second continuous flowpath from the manifold ( 32 ) responsive to tangential filtration in the second state.
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