Air filter arrangement; assembly; and, methods

Patent metadata

Field	Value
Publication number	US-9937455-B2
Application number	US-201514838486-A
Country	US
Kind code	B2
Filing date	Aug 28, 2015
Priority date	Jun 14, 2004
Publication date	Apr 10, 2018
Grant date	Apr 10, 2018

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 a stack of strips comprising fluted media secured to facing media;
(i) the media arrangement defining opposite inlet and outlet flow faces;
(ii) the opposite flow faces being parallel to one another; and,
(iii) the stack of strips comprises a slanted stack having a parallelogram shape with an acute slant angle;

(b) 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; the first sealing surface facing in a direction toward the outlet flow end and having a portion that extends, in a direction of perimeter extension, along a path non-parallel to the outlet flow face and non-parallel to an axial direction of flow from the inlet flow face to the outlet flow face.

2. An air filter cartridge according to claim 1 including:
(a) a preform positioned on the media pack;
(i) the preform including a seal support thereon: extending around the media; and, on which the perimeter housing seal is positioned.

3. An air filter cartridge according to claim 2 wherein:
(a) the preform includes a grid arrangement extending across the outlet flow face of the media.

4. An air filter cartridge according to claim 3 wherein:
(a) the media arrangement has opposite sides;
(b) the first sealing surface of the perimeter housing seal includes a first portion: positioned in overlap with the first side of the media arrangement; and, extending non-parallel to the outlet flow face and non-parallel to an axial direction of flow from the inlet flow face to the outlet flow face; and,
(c) the first sealing surface of the perimeter housing seal includes a second portion: positioned in overlap with a second side of the media arrangement opposite from the first side; and, extending non-parallel to the outlet flow face and non-parallel to an axial direction of flow from the inlet flow face to the outlet flow face.

5. An air filter cartridge according to claim 3 wherein:
(a) the preform comprises a fame piece surrounding the media; the frame piece having a first cross-dimension, not including the perimeter housing seal and support, that is not more than 50% of a perpendicular cross-dimension of the framepiece.

6. An air filter cartridge according to claim 3 wherein:
(a) the preform comprises a fame piece surrounding the media; the frame piece having a first cross-dimension, not including the perimeter housing seal and support, that is not more than 30% of a perpendicular cross-dimension of the frame piece.

7. An air filter cartridge according to claim 3 wherein:
(a) the media pack has a flute length, in a direction between the flow faces, of at least 6 inches.

8. An air filter cartridge according to claim 1 having:
(a) first and second opposite, separate, molded side pieces;
(i) the first molded side piece having a first side edge of each strip of filter media in the stack of strips embedded therein; and,
(ii) the second molded side piece having a second side edge of each strip of media in the stack of strips embedded therein.

9. 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.

10. An air filter cartridge according to claim 8 wherein:
(a) each one of the first and second, opposite, molded side pieces comprises molded polyurethane.

11. An air filter cartridge according to claim 10 wherein:
(a) the perimeter housing seal is an intermediate pinch seal positioned between, and spaced from, the opposite flow faces of the stack of strips of filter media.

12. An air filter cartridge according to claim 1 wherein:
(a) the first sealing surface of the perimeter housing seal includes a first portion: positioned in overlap with a first side of the media arrangement; and, extending non-parallel to the outlet flow face and non-parallel to an axial direction of flow from the inlet flow face to the outlet flow face; and,
(b) the first sealing surface of the perimeter housing seal includes a second portion: positioned in overlap with a second side of the media arrangement, opposite from the first side; and, extending non-parallel to the outlet flow face and non-parallel to an axial direction of flow from the inlet flow face to the outlet flow face.

13. An air filter cartridge according to claim 12 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.

14. An air filter cartridge comprising:
(a) a media arrangement comprising fluted media secured to facing media;
(i) the media arrangement defining opposite inlet and outlet flow faces;
(ii) the opposite flow faces being parallel to one another;

(b) 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; the first sealing surface facing in a direction toward the outlet flow end and having a portion that extends, in a direction of perimeter extension, along a path non-parallel to the outlet flow face and non-parallel to an axial direction of flow from the inlet flow face to the outlet flow face;

(c) the media comprises a stack of strips comprising: individual strips stepped from one another to form an inlet flow face that is not perpendicular to a direction of air flow through the stack; and, an outlet flow face that is not perpendicular to a direction of air flow through the stack.

15. 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 a stack of strips comprising fluted media secured to facing media;
(A) the media arrangement defining opposite inlet and outlet flow faces; and,
(B) the opposite flow faces being parallel to one another; and,
(C) the stack of strips comprises a slanted stack having a parallelogram shape with an acute slant angle; and,

(ii) a perimeter housing seal comprising an axial pinch seal;
(A) the perimeter housing seal having a first sealing surface, in sealing engagement with the housing during use; the first sealing surface facing in a direction toward the outlet flow end and having a portion that extends, in a direction of perimeter extension, along a path non-parallel to the outlet flow face and non-parallel to an axial direction of flow from the inlet flow face to the outlet flow face;

(c) the air flow outlet section having a surface against which the first sealing surface of the housing seal is pressed by the air flow inlet section.

16. An air filter cartridge comprising:
(a) a media arrangement comprising a stack of strips of fluted media secured to facing media;
(i) the media arrangement defining opposite inlet and outlet flow faces;
(ii) the opposite flow faces being parallel to one another;

(b) a perimeter housing seal comprising an axial pinch seal;
(i) the perimeter housing seal having a first sealing surface, for sealing engagement with a ho

Assignees

• Donaldson Co Inc

Inventors

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

Classifications

• B01D2271/022

  Axial sealings · CPC title

• B01D46/525 Primary

  which comprises flutes · CPC title

• B01D46/526 Primary

  in stacked arrangement · CPC title

• B01D2271/025

  Making of sealings · CPC title

• B01D46/0005

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