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 filter cartridge comprising:
(a) 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;
(i) the media pack having a first pair of opposite sides and a second pair of opposite sides; and,
(ii) the media pack including opposite end pieces positioned, respectively, on each one of the second pair of opposite sides; and,
(b) a housing seal arrangement surrounding the media pack;
(i) the housing seal arrangement including a portion extending across each one of the first pair of opposite sides in a direction non-parallel to the outlet flow face.
2. An air filter cartridge according to claim 1 wherein:
(a) the media pack is a blocked, stacked, arrangement wherein each face and side of the media pack intersects each adjacent face and side at 90°.
3. An air filter cartridge according to claim 2 wherein:
(a) the housing seal arrangement is straight, in extension across each one of the first pair of opposite sides.
4. An air filter cartridge according to claim 3 wherein:
(a) an angle Y, between portions of the housing seal arrangement extending across each one of the first pair of opposite sides and the outlet flow face, is at least 10°.
5. An air filter cartridge according to claim 4 wherein:
(a) the end pieces are molded-in-place with the stack of strips of media embedded therein.
6. An air filter cartridge according to claim 5 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.
7. An air filter cartridge according to claim 5 wherein:
(a) the axial seal flange and seal base define a receiving trough between a portion of the axial seal flange and the combination of the media pack and the end pieces.
8. An air filter cartridge according to claim 7 wherein:
(a) the housing seal arrangement is molded-in-place.
9. An air filter cartridge according to claim 8 wherein:
(a) the housing seal arrangement consists essentially of polyurethane foam.
10. An air filter cartridge according to claim 9 wherein:
(a) the housing seal arrangement consists essentially of polyurethane foam having an as-molded density of no greater than 30 lbs./cu.ft.
11. An air filter cartridge according to claim 1 wherein:
(a) the end pieces are molded-in-place with the stack of strips of media embedded therein;
(b) the housing seal arrangement comprises an axial seal flange secured to a seal base with 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; and,
(c) the housing seal arrangement is molded-in-place.
12. An air filter cartridge according to claim 11 wherein:
(a) the housing seal arrangement is straight, in extension across each one of the first pair of opposite sides.
13. An air filter cartridge according to claim 11 wherein:
(a) an angle Y, between portions of the housing seal arrangement extending across the first pair of opposite sides and the outlet flow face, is at least 10°.
14. 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,
(b) a filter cartridge positioned in the housing; 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;
(A) the media pack having a first pair of opposite sides and a second pair of opposite sides; and,
(B) the media pack including opposite end pieces positioned, respectively, on each one of the second pair of opposite sides; and,
(ii) a housing seal arrangement surrounding the media pack;
(iii) the housing seal arrangement including a portion extending across each one of the first pair of opposite sides in a direction non-parallel to the outlet flow face.
15. An air cleaner assembly according to claim 14 wherein:
(a) the media pack is a blocked, stacked, arrangement wherein each face and side of the media pack intersects each adjacent face and side at 90°.
16. An air cleaner assembly according to claim 14 wherein:
(a) the housing seal arrangement is straight, in extension across each one of the first pair of opposite sides.
17. An air cleaner assembly according to claim 16 wherein:
(a) an angle Y, between portions of the housing seal arrangement extending across each one of the first pair of opposite sides and the outlet flow face, is at least 10°.
18. An air cleaner assembly according to claim 17 wherein:
(a) the end pieces are molded-in-place with the stack of strips of media embedded therein.
19. An air cleaner assembly according to claim 18 wherein:
(a) the housing seal arrangement comprises an axial seal flange secured to a seal base; 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.