Filter assemblies and elements utilizing multilayered and wrapped filter media
A filter assembly comprises a filter element and an outlet flange. The filter element comprises a filter media pack comprising a plurality of filter media layers stacked on top of each other to form the filter media pack. The filter media pack has an inlet surface being at an inlet portion of the filter media pack, and an outlet surface being at an outlet portion of the filter media pack. An outlet flange is coupled to the outlet portion of the filter media pack.
1 . A filter element, comprising:
a core having a non-circular core cross-sectional shape; and
a filter media pack comprising a plurality of filter media layers stacked on an outer periphery of the core such that the filter media pack has a filter media pack cross-sectional shape that corresponds to the non-circular core cross-sectional shape, the plurality of filter media layers comprising a first filter media layer and a second filter media layer, the first filter media layer comprising a first layer inlet edge, a first layer outlet edge, a first layer first edge extending between the first layer inlet edge and the first layer outlet edge, and a first layer second edge extending between the first layer inlet edge and the first layer outlet edge, the second filter media layer comprising a second layer inlet edge, a second layer outlet edge, a second layer first edge extending between the second layer inlet edge and the second layer outlet edge, and a second layer second edge extending between the second layer inlet edge and the second layer outlet edge, wherein the first layer inlet edge and the second layer inlet edge define an inlet surface, the first layer outlet edge and the second layer outlet edge define an outlet surface, the first layer first edge is aligned with the second layer first edge and the first layer second edge is aligned with the second layer second edge.
2 . The filter element of claim 1 , wherein each of the core cross-sectional shape and the filter media pack cross-sectional shape is triangular.
3 . The filter element of claim 1 , further comprising a sealing member, and wherein the sealing member comprises planar portions and non-planar portions configured to interact with matching planar and curved surfaces of a corresponding housing.
4 . The filter element of claim 3 , wherein the sealing member is an axial sealing member configured to form a seal with the housing.
5 . The filter element of claim 4 , wherein the sealing member comprises an embedded frame member to maintain a shape of the sealing member.
6 . The filter element of claim 1 , wherein the filter media pack comprises:
a plurality of sidewalls parallel to a flow axis of the filter element; and
a polymeric layer disposed on at least one sidewall of the plurality of sidewalls.
7 . The filter element of claim 1 , wherein the plurality of filter media layers have different lengths.
8 . The filter element of claim 1 , further comprising a sealing member comprising a flexible material configured to be compressed against a housing to form a seal against the housing.
9 . The filter element of claim 1 , wherein the core has a cross-sectional shape of one of a parallelogram and a rhombus.
10 . The filter element of claim 1 , wherein the core is hollow.
11 . A filter element, comprising:
a core having a non-circular core cross-sectional shape; and
a filter media pack comprising a plurality of filter media layers stacked on an outer periphery of the core such that the filter media pack has a filter media pack cross-sectional shape that corresponds to the non-circular core cross-sectional shape, an edge of a first filter media layer of the plurality of filter media layers is aligned with a corresponding edge of a second filter media layer of the plurality of filter media layers,
wherein the filter media pack includes a plurality of sidewalls, and wherein at least one sidewall of the plurality of sidewalls is formed by corresponding edges of the plurality of filter media layers to define a curvature.
12 . A filter element, comprising:
a core having a non-circular core cross-sectional shape, the core comprising:
a central shaft extending from a first shaft end to a second shaft end; and
a plurality of circumferential ribs each protruding radially from the central shaft; and
a filter media pack comprising a plurality of filter media layers stacked on an outer periphery of the core such that the filter media pack has a filter media pack cross-sectional shape that corresponds to the non-circular core cross-sectional shape.
13 . The filter element of claim 12 , wherein the central shaft has a circular cross section.
14 . The filter element of claim 13 , wherein each of the plurality of circumferential ribs have a triangular cross-section.
15 . The filter element of claim 13 , wherein the plurality of circumferential ribs are spaced at fixed intervals along the central shaft.
16 . The filter element of claim 12 , wherein the core further comprises:
a first circumferential rib of the plurality of circumferential ribs disposed at a first end of the central shaft; and
a rib sidewall extending from outer edges of the first circumferential rib and away from the central shaft such that a cavity is defined by the first circumferential rib and the rib sidewall, wherein the cavity is configured to receive a corresponding shaped pin or key.
17 . A filter element, comprising:
a core having a non-circular core cross-sectional shape; and
a filter media pack comprising a plurality of filter media layers stacked on an outer periphery of the core such that the filter media pack has a filter media pack cross-sectional shape that corresponds to the non-circular core cross-sectional shape, an edge of a first filter media layer of the plurality of filter media layers is aligned with a corresponding edge of a second filter media layer of the plurality of filter media layers,
wherein the filter media pack has a concave-shaped inlet surface.
18 . The filter element of claim 17 , wherein an outlet surface of the media pack has a convex shape.
19 . A filter element, comprising:
a core having a non-circular core cross-sectional shape; and
a filter media pack comprising a plurality of filter media layers stacked on an outer periphery of the core such that the filter media pack has a filter media pack cross-sectional shape that corresponds to the non-circular core cross-sectional shape, an edge of a first filter media layer of the plurality of filter media layers is aligned with a corresponding edge of a second filter media layer of the plurality of filter media layers,
wherein the plurality of filter media layers are stacked such that an inlet surface of the media pack defines a first chevron shape projecting inwards from the core.
20 . The filter element of claim 19 , wherein the plurality of filter media layers are stacked such that an outlet surface of the media pack defines a second chevron projecting outwards from the core.