Reduced adhesive filter assembly

• US 7,947,101 B2
• Filed: 03/01/2006
• Issued: 05/24/2011
• Est. Priority Date: 03/01/2006
• Status: Active Grant

• Current Assignee: Camfil AB
• Original Assignee: Camfil AB
• Inventors: Devine, Steven T., Sundvik, Anders Martin, Karlsson, Lennart
• Primary Examiner(s): Smith; Duane
• Assistant Examiner(s): PHAM, MINH CHAU THI
• Application Number:
  US11/365,326
• Publication Number:
  US 20070204577A1
• Time in Patent Office: 1,910 Days
• Field of Search: 554/82, 554/95, 554/97, 554/99, 555/00, 555/01, 555/02, 555/21, 55D/IG.31, 55D/IG.5, 554/87, 555/14, 554/84, 555/24, 156/330.9, 156/331.1, 156/331.4, 156/331.7, 428/195, 428/198, 442/149
• US Class Current: 55/484
• CPC Class Codes: B01D 46/0005 Mounting of filtering elements within casings, housings or frames B01D46/2422 takes precedence
• CPC Class Codes: B01D 46/121 V-type arrangements
• CPC Class Codes: B01D 46/522 with specific folds, e.g. having different lengths

Abstract

Embodiments of the invention generally include a filter assembly having a media pack having a single web of pleated media having at least two mini-pleated regions arranged in non-linear orientation. In one embodiment, a filter assembly includes a media pack defined by a single web of media, and an adhesive layer coupling a flat end of the media pack to a frame assembly to form a lap joint. In another embodiment, a filter assembly includes a media pack sealed to a frame assembly. A discontinuous layer of adhesive couples at least one edge of the media pack to the frame assembly.

Claims

1. A filter assembly comprising:

a frame assembly;

a pleated media pack having an open edge and a flat edge, the open edge having accordion-like folds; and

a layer of adhesive coupling at least the open edge of the media pack to the frame assembly, the adhesive layer further comprising;

a plurality of elongated adhesive strings having regions touching and spaced from each other.

2. The filter assembly of claim 1, wherein an orientation of the media pack is substantially parallel to the frame assembly.

3. The filter assembly of claim 1, wherein the media pack is arranged in a V-bank configuration.

4. The filter assembly of claim 3, wherein the media pack is mini-pleated.

5. The filter assembly of claim 4, wherein the media pack having the V-bank configuration consists of a single web of media.

6. The filter assembly of claim 5, wherein the web of media further comprises:

a filtering layer and a backing layer.

7. The filter assembly of claim 1, wherein the layer of adhesive is a hot melt.

8. The filter assembly of claim 1, wherein the flat edge of the media pack is coupled to the frame assembly with a lap joint, wherein the lap joint comprises an adhesive positioned between the flat edge of the media pack and a tab extending from frame assembly.

9. The filter assembly of claim 1, wherein the layer of adhesive disposed on the frame assembly forms at least one V-shaped pattern.

10. The filter assembly of claim 1, wherein the layer of adhesive is uncontained by side walls along a long edge of adhesive layer.

11. A filter assembly comprising:

a frame assembly;

a pleated media pack having an open edge and a flat edge, the open edge having accordion-like folds; and

a swirled layer of adhesive coupling at least the open edge of the media pack to the frame assembly.

12. The filter assembly of claim 11, wherein the media pack further comprises:

at least one mini-pleated region.

13. The filter assembly of claim 11, wherein the flat edge of the media pack is coupled to the frame assembly by a second layer of adhesive.

14. The filter assembly of claim 13, wherein the second layer of adhesive further comprises a hot melt.

15. The filter assembly of claim 12, wherein the flat edge of the media pack is coupled to the frame assembly by a second swirled adhesive layer.

16. The filter assembly of claim 11, wherein the first layer of adhesive has a weight of at least about 50 grams/square foot.

17. The filter assembly of claim 11, wherein the first layer of adhesive is at least partially foamed.

18. The filter assembly of claim 11, wherein the media pack is arranged in a V-bank configuration.

19. The filter assembly of claim 11, wherein the media pack is mini-pleated.

20. The filter assembly of claim 11, wherein the media pack has a V-bank configuration.

21. The filter assembly of claim 11, wherein the adhesive is at least one of APAO, SIS, modified EVA or rubber based.