Air filter arrangement; assembly; and, methods
AssigneeDonaldson Company, Inc.
InventorsBruce Boehrs, Gregory Reichter, Stephen Sabelko, Paul Wendt
Life of this patent
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Abstract
An air filter media construction or arrangement is disclosed. The air filter media construction or arrangement includes strips of media comprising corrugated sheets secured to facing sheets and forming inlet and outlet flutes secured to one another in a stack. Blocked stacked arrangements and slanted stacked arrangements are shown. Such stacked media is provided with molded end pieces to secure and seal opposite side edges of the media strips. Also described are serviceable filter cartridges and air cleaners including the filter cartridges. Methods of assembly and use are also provided.
Claims17
An air filter cartridge comprising:
- (a) a stack of strips of filter media;
- (i) each strip of filter media comprising a sheet of fluted media secured to a facing sheet of media;
- (A) each strip of filter media having front and rear edges and side edges extending therebetween;
- (B) the stack of strips defining opposite inlet and outlet flow;
- and,
- (C) the stack of strips having first and second, opposite, side faces extending between the inlet and outlet flow faces;
- and
- (b) first and second opposite, separate, molded side pieces;
- (i) the first molded side piece having a first side edge of each strip of filter media in the stack of strips embedded therein, during molding of the first molded side piece;
- and,
- (ii) the second molded side piece having a second side edge of each strip of media in the stack of strips embedded therein, during molding of the second molded side piece;
- and,
- (c) a perimeter housing seal comprising an axial pinch seal;
- (i) the housing seal is a slanted seal arrangement extending at an acute slant angle to an axial direction between the opposite flow faces.
An air cleaner assembly comprising:
- (a) a housing comprising first and second, separable, housing sections defining a housing interior;
- and,
- (b) an air filter cartridge positioned within the housing interior and comprising:
- (i) a stack of strips of filter media;
- each strip of filter media comprising a sheet of fluted media secured to facing media;
- (A) each strip of filter media having front and rear edges and side edges extending therebetween;
- (B) the stack of strips defining opposite inlet and outlet flow faces;
- (C) the stack of strips having first and second, opposite, side faces extending between the inlet and outlet flow faces;
- and
- (ii) first and second opposite, separately molded, side pieces;
- (A) the first molded side piece having a first side edge of each strip of filter media in the stack of strips embedded therein, during molding of the first molded side piece;
- and,
- (B) the second molded side piece having a second side edge of each strip of media in the stack of strips embedded therein, during molding of the second molded side piece;
- and,
- (iii) a housing seal arrangement including a perimeter seal extending around the stack of strips and the first and second, opposite, molded side pieces;
- (A) the perimeter seal comprising an axial pinch seal;
- (B) the air filter cartridge being positioned with the seal arrangement pinched between the first and second housing sections;
- and,
- (C) the housing seal arrangement having sections extending across the first and second molded side pieces at an acute slant angle, to an axial direction between the inlet and outlet flow faces.
Dependencies are inferred from the claim text.