Patent ID: 7938971
Filing Date: 2011-05-10
Classification: B01D,Y10T

Abstract:
1. A fluid filter apparatus comprising: a filtered fluid conduit defining a conduit longitudinal axis, a conduit interior, and a first filtered fluid channel inside of said filtered fluid conduit, said filtered fluid conduit having a first conduit end and a second conduit end; a first filter medium roll established around said filtered fluid conduit towards said first conduit end, said first filter medium roll having: a second filter medium roll established around said filtered fluid conduit closer to said second conduit end than is said first filter medium roll, said second filter medium roll having: a filtered fluid collector established around said filtered fluid conduit and between said first filter medium roll and said second filter medium roll so as to collect fluid filtered by said first filter medium roll and said second filter medium roll; and at least one second filtered fluid channel outside of said filtered fluid conduit, and defined by said filtered fluid conduit and said filter medium roll tubes, each of said at least one second filtered fluid channel comprising: wherein said filtered fluid conduit has at least one remaining longitudinal conduit portion that is distinct from said longitudinal conduit channel portion and that does not form said inner channel wall, said at least one remaining longitudinal conduit portion defining, in a radial plane that is perpendicular to said conduit longitudinal axis, a conduit center, and having, in said radial plane, an outer radius, wherein said longitudinal conduit channel portion forming said inner channel wall has, in said radial plane, a cross-sectional profile with an outer edge that is furthest from said conduit center, all points of said outer edge having a distance from said conduit center that is less than said outer radius, thereby forming one of said at least one second filtered fluid channel when said filter medium roll tubes are established around said filtered fluid conduit, wherein said channeled filtered fluid, while flowing through said at least one second filtered fluid channel, travels externally of said filtered fluid conduit, and in a channeled fluid direction that is away from the filtered fluid collector that collected it and parallel with said conduit longitudinal axis, said apparatus further comprising a plurality of holes through said filtered fluid conduit along said inner channel wall, said holes allowing said channeled filtered fluid to enter into said conduit interior after said filtered fluid, while outside of said filtered fluid conduit, flows through said at least one second filtered fluid channel in said channeled fluid direction.