Patent ID: 8741016
Filing Date: 2014-06-03
Classification: B01D

Abstract:
1. A filter device filtering a fluid, the filtering device comprising: an inlet flow face at a first axial end of said filter device; an outlet flow face at an opposing second axial end of said filter device; a star filter comprising wherein said compact filter and said start filter are arranged to filter in parallel, each filtering a different portion of said fluid to be filtered; a circumferentially extending first terminal sealing surface arranged on a first one of said flow faces of said filter device, said first terminal sealing surface secured onto and seal-tightly covering an axial end face of filter material folds of said star filter from a radially outer flow face of said star filter to a radially inner flow face of said star filter; wherein said first terminal sealing surface extends radially inwardly relative to said central axis from said radially inner flow face of said star filter to terminate at and seal against a radial outer surface of the spirally wound filter body; wherein the axially opposed flow faces of the spirally wound filter body remain uncovered by the first terminal sealing surface; wherein a first portion of said fluid to be filtered enters said spirally wound compact filter at said axial raw side of said compact filter, flowing axially through said gas flow passages to exit said spirally wound compact filter at said axially opposed clean side at a radially interior clean side at an interior of said star filter, wherein a different second portion of said fluid to be filtered enters a radially outer face of said star filter, flows radially inwardly through said star filter material folds and exits said star filter at said radially interior clean side at an interior of said star filter.