IP Library › Granted Patent US 12,746,500
Granted Patent B2
US 12,746,500 · App. 15/839,633 · Granted Sep 29, 2026

Filter media, filter media packs, and filter elements

Inventors: Daniel E. Adamek (Bloomington, MN); Scott M. Brown (Faribault, MN); Mark A. Sala (Lino Lakes, MN)
Assignee: Donaldson Company, Inc.
B01D46/526B01D46/522B01D46/527B01D46/62F02M35/0245
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Quick Facts
Patent No.
US 12,746,500
App. No.
15/839,633
Granted
Sep 29, 2026
Kind
B2
Abstract

Embodiments include an air filtration media pack comprising a plurality of layers of fluted media, each layer comprising a facing sheet and a fluted sheet, the fluted sheet comprising a first plurality of flutes and a second plurality of flutes, the first and second plurality of flutes being arranged in a parallel flow configuration; wherein the first and second plurality of flutes exhibit regular repeating differences in flute shape, flute size, flute height, flute width, cross-flute area, or filter media.

Claims (23)

1 . An air filtration media pack comprising:

filter media comprising a first plurality of flutes, a second plurality of flutes, and a third plurality of flutes: the filter media containing the first, second, and third plurality of flutes being arranged in a parallel flow configuration;

wherein the first, second; and third plurality of flutes exhibit differences in flute shape, flute size, flute height, flute width, or cross-flute area;

wherein the interior of the flutes comprise substantially open interior volumes prior to use;

wherein the first plurality of flutes is arranged in a first plurality of layers of the fluted media, and the second plurality of flutes is arranged in a second plurality of layers of the filter media.

2 . The air filtration media pack of claim 1 , wherein the first and second plurality of flutes are arranged together within at least one layer of the filter media.

3 . The air filtration media pack of claim 1 , wherein the first plurality of flutes is arranged in a first plurality of layers of the filter media, the second plurality of flutes is arranged in a second plurality of layers of the filter media; and a third plurality of flutes is arranged in a third plurality of layers of the filter media.

4 . The air filtration media pack of claim 1 , wherein the first plurality of flutes comprises from 10 to 90 percent of the volume of the media pack, and the second plurality of flutes comprises from 90 to 10 percent of the volume of the media pack.

5 . The air filtration media pack of claim 1 , wherein the first plurality of flutes comprises from 20 to 40 percent of the volume of the media pack, and the second plurality of flutes comprises from 60 to 80 percent of the volume of the media pack.

6 . The air filtration media pack of claim 1 , wherein the first plurality of flutes comprises from 40 to 60 percent of the volume of the media pack, and the second plurality of flutes comprises from 60 to 40 percent of the volume of the media pack.

7 . The air filtration media pack of claim 1 , wherein the first plurality of flutes comprises from 10 to 90 percent of the media surface area of the media pack, and the second plurality of flutes comprises from 90 to 10 percent of the media surface area of the media pack.

8 . The air filtration media pack of claim 1 , wherein the first plurality of flutes comprises from 20 to 40 percent of the media surface area of the media pack, and the second plurality of flutes comprises from 60 to 80 percent of the media surface area of the media pack.

9 . The air filtration media pack of claim 1 , wherein the first plurality of flutes comprises from 40 to 60 percent of media surface area of the media pack, and the second plurality of flutes comprises from 60 to 40 percent of the media surface area of the media pack.

10 . The air filtration media pack of claim 1 , wherein the first plurality of flutes comprises from 10 to 90 percent of the inlet face of the media pack, and the second plurality of flutes comprises from 90 to 10 percent of the inlet face of the media pack.

11 . The air filtration media pack of claim 1 , wherein the first plurality of flutes comprises from 20 to 40 percent of an inlet face of the media pack, and the second plurality of flutes comprises from 60 to 80 percent of the inlet face of the media pack.

12 . The air filtration media pack of claim 2 , wherein the first plurality of layers of filter media and the second plurality of layers of filter media are arranged in an intermixed configuration with one or more layers of the first plurality of layers alternating with one or more layers of the second plurality of layers.

13 . The air filtration media pack of claim 1 , further comprising a third plurality of flutes arranged in parallel flow with the first and second plurality of flutes.

14 . The air filtration media pack of claim 13 , wherein each of the first, second, and third pluralities of flutes is arranged in a separate plurality of layers.

15 . The air filtration media pack of claim 13 , wherein the first, second, and third plurality of flutes are arranged in an intermixed configuration with one more of the plurality of layers alternating with others of the plurality of layers.

16 . The air filtration media pack of claim 1 , wherein the plurality of layers media are arranged in a wound configuration.

17 . The air filtration media pack of claim 1 , wherein the differences in flute shape, flute size, flute height, flute width, cross-flute area or filter media are regular and repeating.

18 . A filter element or air cleaner comprising the filtration media pack of claim 1 .

19 . A method of filtering a fluid stream, the method comprising passing a fluid stream through the air filtration media pack of claim 1 .

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 20, 2018
From: ADAMEK, DANIEL E.; BROWN, SCOTT M.; SALA, MARK A.
To: DONALDSON COMPANY, INC.
Reel/Frame 044981/0132 →
Continuity (2)
Provisional Application 62433145 · Dec 12, 2016
Related Publication 20180161717A1 · Jun 14, 2018
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