Filter element
AssigneeNV Bekaert SA
InventorsKoen Wastijn, Willy Marrecau, Geert Devooght
Life of this patent
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Abstract
A filter element comprises a pleated metal fiber fleece being pleated according to pleating lines providing an edge with pleat openings to be closed in order to make gas flowing through the metal fiber fleece. The filter element further comprises at least two flanks, each of these flanks comprising a stiff material layer. The stiff material layer and the metal fiber fleece are connected using a layer of ceramic adhesive, which prevents direct contact of the metal fiber fleece over the length of the edge of the metal fiber fleece with the flank. Meanwhile the flanks, being essentially perpendicular to the pleating lines, closing the pleat openings in order to prevent bypasses.
Claims62
A filter element comprising a pleated metal fiber fleece being pleated according to pleating lines providing an edge with pleat openings to be closed in order to make gas flow through said metal fiber fleece, said filter element comprising at least two flanks, each of said flanks comprising a stiff material layer, said stiff material layer and said metal fiber fleece being connected using a layer of ceramic adhesive, said layer of ceramic adhesive preventing direct contact of said metal fiber fleece over the length of said edge of said metal fiber fleece with a flank, said flanks being essentially perpendicular to said pleating lines, said flanks closing said pleat openings in order to prevent bypasses, said layer of ceramic adhesive having a thickness of more than 0.5 mm, said thickness being less than 2 mm.
A filter element comprising a pleated metal fiber fleece being pleated according to pleating lines providing an edge with pleat openings to be closed in order to make gas flow through said metal fiber fleece, said filter element comprising at least two flanks, each of said flanks comprising a stiff material layer, said stiff material layer and said metal fiber fleece being connected using a layer of ceramic adhesive, said layer of ceramic adhesive preventing direct contact of said metal fiber fleece over the length of said edge of said metal fiber fleece with a flank, said flanks being essentially perpendicular to said pleating lines, said flanks closing said pleat openings in order to prevent bypasses, said ceramic adhesive layer having a thickness, said layer of ceramic adhesive comprising short metal fibers having an equivalent diameter in the range of 1 to 150 μm.
A filter element comprising a pleated metal fiber fleece being pleated according to pleating lines providing an edge with pleat openings to be closed in order to make gas flow through said metal fiber fleece, said filter element comprising at least two flanks, each of said flanks comprising a stiff material layer, said stiff material layer and said metal fiber fleece being connected using a layer of ceramic adhesive, said layer of ceramic adhesive preventing direct contact of said metal fiber fleece over the length of said edge of said metal fiber fleece with a flank, said flanks being essentially perpendicular to said pleating lines, said flanks closing said pleat openings in order to prevent bypasses, said ceramic adhesive layer having a thickness, said edge of said metal fiber fleece being sunken in said layer of ceramic adhesive over a sunken part, said sunken part having a height at least 10% less than said thickness of said layer of ceramic adhesive.
A filter element comprising a pleated metal fiber fleece being pleated according to pleating lines providing an edge with pleat openings to be closed in order to make gas flow through said metal fiber fleece, said filter element comprising at least two flanks, each of said flanks comprising a stiff material layer, said stiff material layer and said metal fiber fleece are connected using a layer of ceramic adhesive, said layer of ceramic adhesive preventing direct contact of said metal fiber fleece over the length of said edge of said metal fiber fleece with a flank, said flanks being essentially perpendicular to said pleating lines, said flanks closing said pleat openings in order to prevent bypasses, said ceramic adhesive layer having a thickness, said flanks further comprising a wire mesh or an expanded or perforated metal sheet.
Dependencies are inferred from the claim text.