Air filter arrangement; assembly; and, methods

Patent metadata

Field	Value
Publication number	US-10603618-B2
Application number	US-201815946818-A
Country	US
Kind code	B2
Filing date	Apr 6, 2018
Priority date	Jun 14, 2004
Publication date	Mar 31, 2020
Grant date	Mar 31, 2020

Abstract

An air filter media construction or arrangement is disclosed. The air filter media construction or arrangement includes media comprising opposite inlet and outlet flow faces, with a perimeter housing seal. Also described are serviceable filter cartridges and air cleaners including the filter cartridges. Methods of assembly and use are also provided.

First claim

What is claimed:

1. An air filter cartridge comprising:
(a) a media arrangement comprising filter media;
(b) first and second, opposite, molded side pieces having the media extending therebetween;
(c) a perimeter housing seal comprising an axial pinch seal;
(i) the perimeter housing seal having a first sealing surface, for sealing engagement with a housing during use;

(d) the air filter cartridge: including an inlet flow end and an outlet flow end; and, having a rectangular cross-section, at an intermediate location between the flow ends, in a direction perpendicular to a direction between the inlet and outlet flow ends;
(i) the first and second, opposite, side pieces each having a downstream edge adjacent the outlet flow end that does not extend perpendicular to a direction of air flow through the filter cartridge during filtering; and,
(ii) the first sealing surface faces in a direction toward the outlet flow end;
(A) the first sealing surface having a portion, extending across the first molded side piece, that extends non-parallel to the downstream edge of the first molded side piece; and,
(B) the first sealing surface having a portion, extending across the second molded side piece, that extends non-parallel to the downstream edge of the second molded side piece.

2. An air filter cartridge according to claim 1 wherein:
(a) the filter media extends, in a direction between the flow ends, at least 6 inches.

3. An air filter cartridge according to claim 1 wherein:
(a) the filter media extends, in a direction between the flow ends, 6-10 inches.

4. An air filter cartridge according to claim 1 wherein:
(a) the first sealing surface extends, in a direction of extension between the first and second end pieces, along a direction perpendicular to a flow direction between the inlet and outlet flow ends.

5. An air filter cartridge according to claim 1 wherein:
(a) the media at the intermediate portion has a rectangular cross-sectional shape having a height of no more than 50% of a width; the width being in a direction between the first and second end pieces and the height being perpendicular to the width.

6. An air filter cartridge according to claim 5 wherein:
(a) the media intermediate portion has a rectangular cross-sectional shape having a height of no more than 35% of the width.

7. An air filter cartridge according to claim 1 wherein:
(a) the first and second, opposite, molded side pieces are molded with media embedded therein.

8. An air filter cartridge according to claim 1 wherein:
(a) the axial pinch seal is molded-in-place.

9. An air filter cartridge according to claim 8 wherein:
(a) the axial pinch seal is molded-in-place on a seal support that extends around the media.

10. An air filter cartridge according to claim 1 wherein:
(a) the cartridge includes planar inlet and outlet flow ends.

11. An air filter cartridge according to claim 10 wherein:
(a) the planar inlet and outlet flow ends extend parallel to one another.

12. An air filter cartridge according to claim 1 wherein:
(a) the inlet and outlet flow ends extend parallel to one another.

13. An air filter cartridge according to claim 1 wherein:
(a) the perimeter housing seal arrangement is an intermediate axial pinch seal.

14. An air filter cartridge according to claim 1 wherein:
(a) the first and second, opposite, molded side pieces are spaced from, and separately molded from, one another.

15. An air filter cartridge according to claim 1 including:
(a) a grid arrangement extending across the outlet flow end.

16. An air filter cartridge according to claim 1 wherein:
(a) the media arrangement comprises flutes extending in a direction between the inlet flow end and the outlet flow end.

17. An air filter cartridge according to claim 16 wherein:
(a) the media arrangement comprises a stack of strips of filter media; each strip comprising fluted media secured to facing media.

18. An air filter cartridge according to claim 1 wherein:
(a) the stack of strips comprises a slanted stack having a parallelogram shape with an acute slant angle.

19. An air filter cartridge according to claim 1 wherein:
(a) the perimeter housing seal is a slanted seal arrangement extending at an acute slant angle, to an axial direction between the opposite flow faces, within the range of 30° to 80° inclusive.

20. An air cleaner arrangement comprising:
(a) a housing defining an interior and first and second separable sections;
(i) the first section comprising an air flow inlet section having an air flow inlet therein; and,
(ii) the second section comprising an air flow outlet section having an air flow outlet therein;

(b) an air filter cartridge operably positioned within the housing; the air filter cartridge comprising:
(i) a media arrangement comprising filter media;
(ii) first and second, opposite, molded side pieces having the media extending therebetween;
(A) a perimeter housing seal comprising an axial pinch seal;
(1) the perimeter housing seal having a first sealing surface, for sealing engagement with a housing during use;

(iii) the air filter cartridge: including an inlet flow end and an outlet flow end; and, having a rectangular cross-section, at an intermediate location between the flow ends, in a direction perpendicular to a direction between the inlet and outlet flow ends;
(A) the first and second, opposite, side pieces each having a downstream edge adjacent the outlet flow end that does not extend perpendicular to a direction of air flow through the filter cartridge during filtering; and,
(B) the first sealing surface faces in a direction toward the outlet flow end;
(1) the first sealing surface having a portion, extending across the first molded side piece, that extends non-parallel to the downstream edge of the first molded side piece; and,
(2) the first sealing surface having a portion, extending across the second molded side piece, that extends non-parallel to the downstream edge of the second molded side piece.

Assignees

• Donaldson Co Inc

Inventors

• Boehrs Bruce
• Reichter gregory
• Sabelko Stephen
• Wendt Paul

Classifications

• B01D2271/022

  Axial sealings · CPC title

• B01D46/526 Primary

  in stacked arrangement · CPC title

• B01D46/0005

  Mounting of filtering elements within casings, housings or frames (B01D46/2422 takes precedence) · CPC title

• B01D2271/025

  Making of sealings · CPC title

• B01D46/525 Primary

  which comprises flutes · CPC title