Liquid purification or separation – Casing divided by membrane into sections having inlet – With membrane cleaning or sterlizing means
Reexamination Certificate
2006-11-28
2006-11-28
Menon, Krishnan S (Department: 1723)
Liquid purification or separation
Casing divided by membrane into sections having inlet
With membrane cleaning or sterlizing means
C210S194000, C210S195300, C210S195400, C210S196000, C210S197000, C210S258000, C210S299000, C210S304000, C210S308000, C210S310000, C210S312000, C210S311000, C210S407000, C210S456000, C422S105000
Reexamination Certificate
active
07141167
ABSTRACT:
A filter device for filtering liquids including a filter membrane, a main body which is arranged upstream from the filter membrane, and which has a feed channel perpendicular to the surface of the filter membrane, a gap extending between the filter membrane and the main body forming a tangentially directed cross-flow, and a return channel which is used to return the tangential flow to the feed channel. The flow is primarily returned thereto by means of a contraction in the feed channel at the mouth of the return channel. Preferably, a solid separator is disposed in the return channel. At least one baffle element is arranged in the feed channel in order to create a turbulent flow. The tangential flow along the filter membrane is used to clean said membrane.
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Menon Krishnan S
N F T Nanofiltertechnik GmbH
Senniger Powers
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