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EP-4741038-A2 - FILTER CARTRIDGE INCLUDING U-SHAPED CANTED INLET FRAME; FILTER SYSTEM INCLUDING SAME

EP4741038A2EP 4741038 A2EP4741038 A2EP 4741038A2EP-4741038-A2

Abstract

A filter system and a filter cartridge for use in the filter system is provided. The filter cartridge includes a filter media pack having a first flow face and a second flow face, a housing engagement member that surrounds the filter media pack, the housing engagement member includes first and second annular sidewalls that form a trough therebetween, the trough having a constant depth between a mouth and a bottom of the trough at all locations, and the trough having an enlarged region wherein the bottom of the trough has a greater width dimension than other portions of the bottom of the trough.

Inventors

  • KRULL, TIMOTHY L

Assignees

  • Baldwin Filters, Inc.

Dates

Publication Date
20260513
Application Date
20220609

Claims (9)

  1. A filter cartridge (102, 302) comprising: a filter media pack (112, 312) having a first flow face (124, 324) and a second flow face (122, 322); a housing engagement member (140, 340) that surrounds the filter media pack (112, 312), the housing engagement member (140) includes first and second annular sidewalls (150, 350, 176, 376) that form a trough (178, 378) therebetween, the trough (178, 378) having a constant depth (D1) between a mouth and a bottom of the trough (178, 378) at all locations; and the trough (178, 378) having an enlarged region (190, 390) wherein the bottom of the trough (178, 378) has a greater width dimension than other portions of the bottom of the trough; the housing engagement member (140, 340) includes an annular wall member (411) that extends outward relative to the second annular sidewall (376); the annular wall member (411) and the second annular sidewall forming a gap (413) with the filter media pack (312); an adhesive (410) is provided within the gap (413) to secure the housing engagement member (340) to the filter media pack (312); the annular wall member (411) defining an enlarged mouth to the gap (413).
  2. The filter cartridge of claim 1, wherein the first annular sidewall (150; 350) is spaced outward from the second annular sidewall (176; 376).
  3. The filter cartridge of claim 2, wherein a super majority of the trough (178; 378) reduces in width when moving from the mouth thereof towards the bottom thereof.
  4. The filter cartridge of claim 1, wherein the first and second annular sidewalls (150, 176; 350, 376) are generally connected together proximate the bottom of the trough (178; 378).
  5. The filter cartridge of claim 4, wherein the first and second annular sidewalls (150, 176; 350, 376) are formed as a single continuous body formed from a single continuous piece of material.
  6. The filter cartridge of claim 1, wherein the gap (413) is closed off between the filter cartridge and second annular sidewall by a piece of shutoff tape (415).
  7. The filter cartridge of claim 6, wherein the shutoff tape (415) is spaced away from the annular wall member (411) such that a portion of the gap (413) is formed axially between the shutoff tape (415) and the annular wall member (411).
  8. The filter cartridge of any preceding claim, wherein the enlarged mouth has a width measured perpendicular to the depth (D1) of the trough (378), wherein the width is greater than a width between the second annular sidewall (350, 376) and an adjacent portion of the media pack or an adjacent portion of an end cap (318).
  9. A filter system comprising: a filter housing (106) having a housing body (104) defining an internal cavity, the housing body (104) having a sealing surface (145) extending around the internal cavity, the housing body (104) having an axially extending tooth positioned radially inward of the sealing surface, the tooth (192) extending axially away from the internal cavity axially past the sealing surface; and a filter cartridge according to any one of claims 1-8, the tooth (192) being axially received within the enlarged region of the trough (178, 378).

Description

FIELD OF THE INVENTION This invention generally relates to filter systems and particularly filter systems that include replaceable filter cartridges and particularly to frames and seal components for sealing the replaceable filter cartridge with a reusable filter housing. BACKGROUND OF THE INVENTION Air streams can carry contaminant material therein. It is often desirable to filter these contaminants from the air stream before the air enters a particular system or operation, such as in the case of combustion air entering an engine in a motor vehicle or other power generation equipment. In filtering systems where a replaceable filter cartridge is inserted into a filter housing, sealing of the filter cartridge within the filter housing is extremely important. In order to effectively filter out contaminants from the air stream as it passes through the filter cartridge and the housing, the seal between the filter cartridge and the housing should be airtight. If not, unfiltered air and dislodged contaminants can pass through gaps between the filter cartridge and the filter housing and enter the system. Some types of filtering systems are known to create axial sealing forces when a gasket of the filter element is axially compressed under a clamping force created between a filter housing lid and a filter housing body in a closed position. It is desirable to improve upon the known unidirectional sealing forces to improve the overall sealing between the filter element and the filter housing, and thus improve the overall filtering effectiveness of the unit. To increase filter life and decrease maintenance intervals, it is desirable to increase the particulate holding capacity of filter cartridges. The present disclosure provides improvements over the current state of the art. BRIEF SUMMARY OF THE INVENTION New and improved filter systems and filter cartridges for used in filter systems are provided. In an example, a filter cartridge including a primary media pack, a precleaner media and a housing engagement member is provided. The primary media pack has an outer perimeter and opposite first and second primary flow faces. The precleaner media has an outer perimeter and opposite first and second precleaner flow faces. The first precleaner flow face extends in a first plane parallel to and adjacent to the first primary flow face of the primary media pack. The second precleaner flow face extends in a second plane non-parallel to the first precleaner flow face and the first plane. The housing engagement member surrounds, at least in part, the primary media pack and surrounds, at least in part, the precleaner media. The housing engagement member includes a seal portion and a seal support portion. The filter cartridge may define a central axis that is generally aligned with the flow of fluid through the primary media pack. In one example, the central axis is orthogonal to the opposed first and second primary flow faces. As used herein, one component that surrounds another can be axially offset from one another such that the surrounded component need not be axially inserted into the surrounding component. In one example, the filter cartridge includes a frame body. The frame body includes a perforated base located between the first primary flow face the first precleaner flow face. The frame body includes a first wall extending around the precleaner media. The frame body is affixed to the housing engagement member. In one example, the seal support portion is arranged along a third plane that extends at an angle to the first and second primary flow faces and at an angle to the first plane. In one example, the third plane is parallel to the second plane. In one example, the frame body is axially received within the housing engagement member. In one example, the seal support portion is a first annular flange. A second wall extends away from the first flange. The first wall of the frame body is axially received within the second wall. The first and second walls are annular walls. The second wall is spaced outward from the first wall forming an annular trough therebetween. In one example, a sealant is applied between the frame body and housing engagement member operably sealing the first wall to the second wall preventing fluid flow between the first and second walls. In one example, a second annular flange attaches to the second wall and extends inward from the second wall. A third annular flange attaches to the first wall and extends outward from the first wall. The second annular flange axially abuts the first annular flange. In one example, the first, second and third annular flanges are radially directed flanges. In one example, the sealant is applied between the second and third annular flanges. In one example, the first and second annular flanges are axially spaced from one another. In one example, the first wall includes spaced apart first and second wall segments and spaced apart third and fourth wall segments, the third a