US 6,179,890 B2Granted

Air cleaner having sealing arrangement between media arrangement and housing

AssigneeDonaldson Company, Inc.

InventorsTimothy M. Ramos, Edward A. Steinbrueck, Steven Scott Gieseke, Carolyn J. Finnerty, Wayne R. W. Bishop

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Abstract

An air cleaner includes a housing having first and second opposite ends. A media pack is preferably oriented within the interior volume of the housing. In preferred embodiments, the media pack will have a first and second opposite flow face and be constructed and arranged for air to flow into the media pack through the first flow face, and for air to exit the media pack through the second flow face. The air cleaner will include a seal member forming a seal between the media pack and the housing. In preferred constructions, a secondary filter element is oriented within the interior volume of the housing. In some preferred embodiments, the housing is constructed and arranged as a resonator. Certain embodiments include a seal construction that engages the secondary filter element. Methods of filtering systems, servicing filtration systems, and constructing filter arrangements and housings will use filter elements and constructions as characterized above.

Claims27

Dependent claims

An air cleaner arrangement comprising:

(a) a housing having first and second opposite ends and defining an interior volume;
said housing defining an inlet adjacent to said first end and an outlet adjacent to said second end;
(i) said housing including an internal annular sealing surface;
(ii) said housing including a first seat being angled relative to said annular sealing surface;
(b) a media pack oriented within said interior volume of said housing;
(i) said media pack having a first flow face and an opposite second flow face;
said first flow face being adjacent to said first end, and said second flow face being adjacent to said second end;
(A) said media pack being constructed and arranged for air to flow into said media pack through said first flow face, and for air to exit said media pack through said second flow face;
(c) a seal member forming a seal between said media pack and said housing;
(i) said seal member being supported by an extension of a frame arrangement;
(A) said extension projecting axially from one of said first and second flow faces;
(ii) said seal member forming a radial seal between and against said extension and said housing;
(A) said first seat engaging said seal member;
(iii) said seal member being circumscribed by said sealing surface;
said radial seal being formed by compression of said seal member between and against said sealing surface and said extension of said frame arrangement;
and
(d) a secondary filter element oriented within said interior volume of said housing.

14 more elements

An air cleaner comprising:

(a) a housing having an inlet, an outlet, and a wall extending between said inlet and said outlet;
said inlet and outlet being at opposite ends of said housing;
said wall defining a housing interior portion;
(i) said housing having an annular seat constructed and arranged to support a filter element;
(ii) said inlet comprising a first open area defined by said housing;
(iii) said outlet comprising a second open area defined by said housing;
(A) said first open area being about 5-10 percent smaller than said second open area;
(iv) said wall being cylindrical and having a diameter about 100-250 percent larger than a largest cross-sectional dimension of said outlet;
(v) said wall having a length extending between said inlet and said annular seat;
a ratio of said wall length to said diameter of said wall being at least about 1.5;
(b) a filter element oriented within said housing interior portion against said annular seat;
(c) a seal member forming a seal between said filter element and said housing;
and
(d) a non-internal tube construction within said housing interior portion between said filter element and said outlet.

11 more elements

Dependencies are inferred from the claim text.