Air filter arrangement; assembly; and, methods

1. An air filter cartridge comprising:

(a) a media pack arrangement comprising two slanted stacks of single facer strips positioned on opposite sides of a divider member and defining:

(i) a first face with a recessed central region; and,

(ii) an opposite second face with a central projection;

(iii) the divider member including a handle arrangement projecting outwardly from the first face; and,

(b) a housing seal arrangement positioned in extension around the media pack arrangement.

2. An air filter cartridge according to claim 1 including: (a) first and second, opposite, side end pieces, molded-in-place on opposite side ends of the media pack arrangement; (i) the housing seal arrangement extending over the first and second side end pieces.

3. An air filter cartridge according to claim 2 wherein:

(a) the housing seal arrangement comprises a base section and a compression section; the compression section being supported on the base section with a receiver space positioned between a portion of the compression section and the media pack arrangement.

4. An air filter cartridge according to claim 3 wherein:

(a) the housing seal arrangement is molded-in-place with the base section compression section molded as a single construction.

5. An air filter cartridge according to claim 3 wherein:

(a) the receiver space extends continuously and completely around the media pack arrangement.

6. An air filter cartridge according to claim 3 wherein:

(a) the receiver space is open toward the second face.

7. An air filter cartridge according to claim 2 wherein: (a) the first, molded-in-place, side piece has an edge, adjacent a first selected one of the inlet flow face and outlet face, having a central apex and end edges on opposite sides of the apex; and, (b) the second, molded-in-place, side piece has an edge, adjacent the selected first one of the inlet flow face and outlet flow face, having a central apex and end edges on opposite sides of the apex.

8. An air filter cartridge according to claim 1 including: (a) first and second, opposite, side end pieces, molded-in-place on opposite side ends of the media pack arrangement.

9. An air filter cartridge according to claim 8 wherein:

(a) the divider member comprises a handle arrangement including at least one handle member having a finger aperture arrangement thereon.

10. An air filter cartridge according to claim 9 wherein:

(a) the handle arrangement includes first and second, spaced, handle members each having a finger aperture arrangement therein.

11. An air filter cartridge according to claim 1 wherein: (a) the recessed central region is in the inlet flow face.

12. An air filter cartridge according to claim 11 wherein:

(a) the first, molded-in-place, side piece has a straight end edge, opposite the apex, with no apex therein; and,

(b) the second, molded-in-place, side piece has a straight end edge, opposite the apex, with no apex therein.

13. An air filter cartridge according to claim 1 wherein: (a) the recessed central region in the first flow face is a central recess formed by strips of single facer media forming a face having an inwardly directed v-shape; and,

(b) the projection in second flow face is a central projection formed by strips of single facer media forming a face having an outwardly directed v-shape.

14. An air filter cartridge according to claim 1 wherein:

(a) the media pack arrangement includes first and second, slanted, stacks of strips of single facer media;

(i) the first, slanted, stack of strips of single facer media being positioned with each strip positioned stepped down from a next, adjacent, outer strip to form an inwardly slanted first face section and an outwardly slanted opposite face section;

(ii) the second, slanted, stack of strips of single facer media being positioned with each strip positioned stepped down from a next, adjacent, outer strip to form an inwardly slanted first face section and an outwardly slanted opposite face section; and,

(iii) the first, slanted, stack of strips is positioned within the media pack arrangement: with the slanted inlet face section of the first slanted stack of strips facing the slanted first face section of the second slanted stack of strips; and, with the slanted opposite face section of the first slanted stack of strips directed away from the slanted opposite face section of the second slanted stack of strips.

15. An air filter cartridge according to claim 14 wherein:

(a) the first and second, slanted, stacks of strips each comprise the same number of strips.

16. An air filter cartridge according to claim 1 including:

(a) an outer screen secured to the filter cartridge in extension over: an upper side surface; an opposite lower side surface; and, the outlet face of the media pack arrangement;

(i) the outer screen not extending over the inlet face of the media pack arrangement.

17. An air cleaner assembly comprising:

(a) a housing defining an air flow inlet section and an air flow outlet section; and,

(b) an air filter cartridge operably positioned within the hosing; the air filter cartridge comprising:

(i) a media pack arrangement comprising two slanted stacks of single facer strips positioned on opposite sides of a divider member and defining:

(A) a first face with a recessed central region; and,

(B) an opposite second face with a central projection;

(C) the divider member including a handle arrangement projecting outwardly from the first face; and,

(ii) a housing seal arrangement positioned in extension around the media pack arrangement;

(iii) the housing seal arrangement being sealed between the air flow inlet section and the air flow outlet section.

18. An air cleaner assembly according to claim 17 wherein:

(a) the air flow inlet section includes an upwardly directed inlet.