Filter cartridge with seal member and methods

1. An air filter cartridge comprising:

(a) a media pack having upstream and downstream opposite flow faces and first and second opposite sides extending between the upstream and downstream opposite flow faces;

(i) the media pack comprising a stack of strips of single facer filter media material, each strip including a fluted media sheet secured to a facing media sheet and oriented with flutes of each fluted sheet extending in a direction between the upstream and downstream flow faces;

(ii) the upstream flow face and downstream flow face being parallel, and each strip of the media pack being angled relative to a horizontal surface from the upstream flow face to the downstream flow face at an angle of 20-80 degrees;

(b) a first side panel against the first side of the media pack; and

(c) a gasket arrangement including:

(i) a perimeter gasket member against the downstream flow face and around a perimeter of the downstream flow face; and

(ii) a side gasket member, integral with the perimeter gasket member, and adjacent to at least a partial extension of the first side panel.

2. The air filter cartridge of claim 1 wherein:

(a) the media pack further includes third and fourth opposite sides extending between the upstream and downstream opposite flow faces; and

(b) the air filter cartridge further includes:

(i) a second side panel against the second side of the media pack;

(ii) a third side panel against the third side of the media pack; and

(iii) a fourth side panel against the fourth side of the media pack.

3. The air filter cartridge of claim 2 wherein:

(a) the side gasket member includes no portion against the second, third, and fourth side panel.

4. The air filter cartridge of claim 1 wherein:

(a) the side gasket member extends against the first side panel from the downstream flow face a distance no greater than 40% of an overall length of the first side panel.

5. The air filter cartridge of claim 1 further including:

(a) a gasket mounting face projecting from and spaced from a remaining portion of the air filter cartridge; the gasket mounting face being angled to a plane of the perimeter gasket member;

(i) the gasket mounting face supporting the side gasket member.

6. The air filter cartridge of claim 5 wherein:

(a) the gasket mounting face is angled from 45 degrees to −180 degrees relative to the downstream flow face.

7. The air filter cartridge of claim 2 further comprising:

(a) a handle secured to at least one of the first, second, third, and fourth side panels.

8. A method of filtering air using the air filter cartridge of claim 1 ; the method comprising:

(a) directing dirty air into an unfiltered air plenum of a housing; the housing having a tubesheet, and a frame arrangement;

(i) the tubesheet separating the housing between the unfiltered air plenum and a filtered air plenum; the tubesheet having a plurality of apertures therethrough; the tubesheet having a sealing surface;

(ii) the frame arrangement extending from the tubesheet; and

(b) directing the dirty air through the upstream flow face of the air filter cartridge;

(i) the perimeter gasket member being compressed against the frame arrangement; and

(ii) the side gasket member being compressed against the tubesheet sealing surface.

9. An air filter cartridge comprising:

(a) a media pack having upstream and downstream opposite flow faces, first and second opposite sides extending between the upstream and downstream opposite flow faces, and third and fourth opposite sides extending between the upstream and downstream opposite flow faces;

(b) a first side panel against the first side of the media pack;

(c) a second side panel against the second side of the media pack;

(d) a third side panel against the third side of the media pack;

(e) a fourth side panel against the fourth side of the media pack; and

(f) a gasket arrangement including:

(i) a perimeter gasket member against the downstream flow face and around a perimeter of the downstream flow face; and

(ii) a side gasket member, integral with the perimeter gasket member, and adjacent to at least a partial extension of the first side panel; the side gasket member including no portion against the second, third, and fourth side panel.

10. The air filter cartridge of claim 9 wherein:

(a) the side gasket member extends against the first side panel from the downstream flow face a distance no greater than 40% of an overall length of the first side panel.

11. The air filter cartridge of claim 9 wherein:

(a) the media pack comprises a stack of strips of single facer filter media material, each strip including a fluted media sheet secured to a facing media sheet and oriented with flutes of each fluted sheet extending in a direction between the upstream and downstream flow faces.

12. The air filter cartridge of claim 9 further comprising:

(a) a handle secured to at least one of the first, second, third, and fourth side panels.

13. A method of filtering air using the air filter cartridge of claim 9 ; the method comprising:

(a) directing dirty air into an unfiltered air plenum of a housing; the housing having a tubesheet, and a frame arrangement;

(i) the tubesheet separating the housing between the unfiltered air plenum and a filtered air plenum; the tubesheet having a plurality of apertures therethrough; the tubesheet having a sealing surface;

(ii) the frame arrangement extending from the tubesheet; and

(b) directing the dirty air through the upstream flow face of the air filter cartridge;

(i) the perimeter gasket member being compressed against the frame arrangement; and

(ii) the side gasket member being compressed against the tubesheet sealing surface.

14. An air filter cartridge comprising:

(a) a media pack having upstream and downstream opposite flow faces and first and second opposite sides extending between the upstream and downstream opposite flow faces;

(b) a first side panel against the first side of the media pack; and

(c) a gasket arrangement including:

(i) a perimeter gasket member against the downstream flow face and around a perimeter of the downstream flow face;

(ii) a side gasket member, integral with the perimeter gasket member, and adjacent to at least a partial extension of the first side panel; and

(d) a gasket mounting face projecting from and spaced from a remaining portion of the air filter cartridge; the gasket mounting face being angled to a plane of the perimeter gasket member;

(i) the gasket mounting face supporting the side gasket member.

15. The air filter cartridge of claim 14 wherein:

(a) the media pack further includes third and fourth opposite sides extending between the upstream and downstream opposite flow faces; and

(b) the air filter cartridge further includes:

(i) a second side panel against the second side of the media pack;

(ii) a third side panel against the third side of the media pack; and

(iii) a fourth side panel against the fourth side of the media pack.

16. The air filter cartridge of claim 15 wherein:

(a) the side gasket member includes no portion against the second, third, and fourth side panel.

17. The air filter cartridge of claim 15 wherein:

(a) the media pack comprises a stack of strips of single facer filter media material, each strip including a fluted media sheet secured to a facing media sheet and oriented with flutes of each fluted sheet extending in a direction between the upstream and downstream flow faces.

18. The air filter cartridge of claim 17 wherein:

(a) the upstream flow face and downstream flow face are parallel, and each strip of the media pack is angled relative to a horizontal surface from the upstream flow face to the downstream flow face at an angle of 20-80 degrees.

19. The air filter cartridge of claim 14 wherein:

(a) the gasket mounting face is angled from 45 degrees to −180 degrees relative to the downstream flow face.

20. The air filter cartridge of claim 15 further comprising:

(a) a handle secured to at least one of the first, second, third, and fourth side panels.

21. A method of filtering air using the air filter cartridge of claim 14 ; the method comprising:

(a) directing dirty air into an unfiltered air plenum of a housing; the housing having a tubesheet, and a frame arrangement;

(i) the tubesheet separating the housing between the unfiltered air plenum and a filtered air plenum; the tubesheet having a plurality of apertures therethrough; the tubesheet having a sealing surface;

(ii) the frame arrangement extending from the tubesheet; and

(b) directing the dirty air through the upstream flow face of the air filter cartridge;

(i) the perimeter gasket member being compressed against the frame arrangement; and

(ii) the side gasket member being compressed against the tubesheet sealing surface.