Patent ID: 6953124

Claim:
A filter comprising: a housing having a housing vessel and a cover; and a filter element with end face inlets and discharge outlets, the filter element comprising: at least one flat layer and at least one folded layer of filter material through which a fluid to be filtered can pass, wherein the at least one flat layer alternates with the at least one folded layer such that a plurality of adjacent channels having a triangular cross section are formed, some of said channels being inlet channels which are open at an inlet end face of said filter element and others of said channels being discharge channels which are open at a discharge end face of said filter element opposite said inlet end face; tight seals closing the inlet channels at the discharge end face of the filter element and tight seals closing the discharge channels at the inlet end face of the filter element such that a fluid to be filtered, in order to flow through the filter element from the inlet end face of the filter element to the discharge end face, must pass from an inlet channel through one of said layers of filter material into a discharge channel; and means for sealing the inlet end face from the discharge end face at a mounting location of the filter element, wherein except for sides contiguous with an outer periphery of the filter element, each side of the triangular cross section inlet channels is adjoined by a discharge channel, and vice versa, so that the fluid can flow through the full channel area of the channels except for fold edges at the apexes of the triangular channels, and wherein the filter element is mounted at the mounting location which is in a parting plane between the housing vessel and the cover.