Air filter arrangement
An air cleaner arrangement is shown. The air cleaner arrangement includes a serviceable filter cartridge comprising strips of media arranged in a stacked configuration. The strips of media each comprise a corrugated sheet secured to a facing sheet. A preferred filter cartridge positioned within the air cleaner arrangement, is depicted.
1. An air cleaner assembly comprising:
(a) a housing defining an interior having an inlet section, an outlet section and a housing separation region defined by opposite flanges;
(i) the outlet section including an air flow outlet; and
(ii) the inlet section including an air flow inlet;
(iii) the housing having a first pair of opposite housing sides and a second pair of opposite housing sides;
(A) the first pair of opposite housing sides, each having a length, in extension between each member of the second pair of opposite sides, that is larger than a length of each one of the second pair of opposite sides in extension between each one of the first pair of opposite sides; and,
(b) a filter cartridge positioned within the housing interior; the filter cartridge comprising:
(i) a media pack comprising a stack of strips of fluted media secured to facing media to define a media pack with opposite inlet and outlet flow faces and with inlet and outlet flutes directed therebetween; and
(ii) a housing seal arrangement surrounding the media pack in a plane not parallel to either one of the inlet face and outlet face;
(iii) the filter cartridge being positioned with an angle X between the outlet flow face and the air flow outlet of at least 10° and not greater than 80° and with the strips of fluted media defining media planes directed at an angle greater than 10° and not more than 80° relative to the air flow outlet; and,
(iv) the media pack being a blocked, stacked arrangement wherein each face and side of the media pack intersects each adjacent face and side at 90 °;
(v) the media pack having a first pair of opposite sides and a second pair of opposite sides;
(A) each member of the first pair of opposite sides having a first dimension of length, in a direction parallel to the inlet face and outlet face; and,
(B) each member if the second pair of opposite sides having a second dimension of length, in a direction parallel to the inlet face and outlet face;
(C) the first dimension of length being longer than the second dimension of length; and,
(D) the seal arrangement extending across each member of the first pair of opposite sides, along a path not parallel to the inlet face and outlet face;
(c) the housing separation region, in extension across the first pair of opposite sides, extending at an angle non-parallel to the outlet flow face.
2. An air cleaner assembly according to claim 1 wherein:
(a) the housing seal arrangement extends at an angle Y, relative to the outlet face of the filter cartridge, of at least 5°.
3. An air cleaner assembly according to claim 1 wherein:
(a) the filter cartridge is positioned with at least 10% of the volume of the media pack positioned in the inlet section.
4. An air cleaner assembly according to claim 1 wherein:
(a) the air flow inlet comprises an inlet tube and the air flow outlet comprises an outlet tube; the inlet tube and outlet tube extending from a remainder of the housing in opposite directions.
5. An air cleaner assembly according to claim 1 wherein:
(a) the filter cartridge includes an apex directed into the outlet section and a diagonally opposite apex directed into the inlet section; and,
(b) at least 15% of the volume of the media pack is positioned in the outlet section.
6. An air cleaner assembly according to claim 1 wherein:
(a) the outlet section is positioned above the inlet section.
7. An air cleaner assembly according to claim 1 wherein:
(a) the media pack includes opposite end pieces; and,
(b) the housing seal arrangement extends around the media pack and end pieces.
8. An air cleaner arrangement according to claim 7 wherein:
(a) the housing inlet section includes a ledge arrangement engaged by the side end pieces on the media pack.
9. An air cleaner arrangement according to claim 7 wherein:
(a) the housing seal arrangement comprises an axial seal flange secured to a seal base;
(i) the seal base being secured to a combination comprising the media pack and the end pieces;
(ii) the axial seal flange and seal base defining a receiving trough between a portion of the axial seal flange and the combination of the media pack and the end pieces;
(b) the housing outlet section including a projection arrangement extending into the receiving trough.
10. An air cleaner arrangement according to claim 7 wherein:
(a) the end pieces are molded-in-place; and,
(b) the housing seal arrangement is molded-in-place.
11. An air cleaner assembly according to claim 10 wherein:
(a) the end pieces comprise compressible polyurethane foam; and,
(b) the housing seal arrangement consists essentially of compressible polyurethane foam.
12. An air cleaner arrangement according to claim 1 wherein:
(a) an angle Y, between the housing seal arrangement and the outlet face is 10°.
13. An air cleaner assembly according to claim 1 wherein:
(a) the outlet section includes a sealing rib positioned to project into the housing seal arrangement.
14. An air cleaner assembly according to claim 13 wherein:
(a) the sealing rib is sized to project into the housing seal arrangement an amount corresponding to at least 2% of an uncompressed thickness of a portion of the housing seal arrangement engaged by the rib.