Reduced adhesive filter assembly
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.
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.