An upper end cap is attached to an upper end portion of a filter assembly, and the upper end cap includes an inner peripheral wall that is fitted into a central space portion of an inner-filter member, an intermediate wall that surrounds the outer periphery of an outer-core member, and an outer peripheral wall that surrounds the outer periphery of an outer-filter member. The height of the intermediate wall is smaller than the height of the outer peripheral wall and the height of the inner peripheral wall. The inside of the upper end cap is filled with adhesive having a depth that enables the intermediate wall to be embedded in the adhesive, and the upper end portion of the filter assembly is bonded to the upper end cap in a state where the upper end portion is inserted in the adhesive.

A filter element has a sheet of filter media having a first elongate edge and a second elongate edge. The sheet of filter media defines a plurality of pleats, a first set of pleat folds and a second set of pleat folds, where each of the plurality of pleats extend between the first set of pleat folds and the second set of pleat folds. The first set of pleat folds each extend from the first elongate edge to the second elongate edge, and the second set of pleat folds each extend from the first elongate edge to the second elongate edge. Each of the plurality of pleats defines a repeating wave pattern of flute peaks and flute valleys alternating from the first set of pleat folds to the second set of pleat folds. Each of the flute peaks and flute valleys extend from the first elongate edge to the second elongate edge.

A filter element may include a filter medium extending in an extension direction and including a filter material separating clean and raw sides of the filter element, and two seals arranged at two end faces of the filter medium located opposite one another in the extension direction, so that an inner side of each seal may be arranged lying against the associated end face in a fluid-tight manner. The two inner sides, jointly with an inner circumferential side of the filter medium, may partly limit a filter element interior space. The filter medium, in a section running perpendicularly to the extension direction, has an open U-geometry or V-geometry with two legs.

The current technology relates to various filter elements configurations where a substrate layer defines a surface having a treatment. The treatment increases a roll off angle of the surface for a 50 water droplet when the surface is immersed in toluene. The filter element can have a housing and the substrate disposed in the housing. In some embodiments the substrate layer defines a plurality of pleats extending between pleat folds that form flow faces of the media. In some embodiments the substrate is incorporated into single facer media of a filter element. In some embodiments the substrate layer is incorporated in a filter element having a flow-by configuration. In some embodiments the substrate layer is incorporated in a filter element having a cross-flow configuration. Some embodiments relate to a vent. Some embodiments relate to a barrier assembly and/or a fuel filter element. Various other filter elements are described.

Embodiments herein relate to end caps and pleat guides for filter assemblies. In an embodiment, a filter assembly component is included having an end cap that can include a pleat guide channel disposed about a circumference of the end cap. The pleat guide channel can include a repeating pattern that can include a plurality of peaks and a plurality of valleys distributed about the circumference of the end cap. The pleat guide channel can be configured to receive and mechanically support a pleated filter media within the pleat guide channel. Other embodiments are also included herein.

A cylindrical filter element having a central longitudinal axis and filter media including a plurality of radially extending pleats arranged in a pattern that repeats around the central longitudinal axis. Each of the pleats comprises an inner pleat tip, wherein the inner pleat tips of each pattern define an open area that extends along a height of the filter element, and wherein each pattern of pleats comprises a first series of intermediate pleats that descends in length from a major pleat to a minor pleat and a second series of intermediate pleats that ascends in length from the minor pleat to a major pleat of an adjacent pattern of pleats.

A pleated filter media configured to receive a stream of fluid flowing in a first direction is provided. The pleated filter media includes a first filter media panel and a second filter media panel coupled to the first filter media panel at a first pleat extending in a second direction transverse to the first direction. The pleated filter media also includes a first embossment disposed on the first filter media panel and the second filter media panel. The first embossment extends in a third direction transverse to the first direction and the second direction.

An illustrative aspect of the invention provides a filtration apparatus comprising a filtration element having a plurality of filtration media sheets and at least one reinforcement element positioned intermediate adjacent filtration media sheets. The reinforcement element has a body that is formed from a planar member having a plurality of apertures to allow passage of fluid therethrough. At least a portion of a surface of the reinforcement element is in contact with one of the filtration media sheets. At least a portion of another surface of the reinforcement element is in contact with the other filtration media sheet. Each of these surface portions defines a plane that is parallel to the filtration media sheet with which the surface portion is in contact.

A filter element includes a construction of pleated filter media defining an interior volume. First and second opposite end caps are secured to opposite ends of the filter media. A support structure supports the filter media and is operably oriented in the interior volume. The support structure extends from the first opposing interior face to the second opposing interior face. The support structure is provided to extend less than a full extension between the first end cap and second end cap.

Disclosed herein is an air conditioner including a suction panel which includes a suction port through which air is suctioned in inside a housing. The suction panel is formed to rotate with an axial direction of an air blowing fan or a direction perpendicular to the axial direction of the air blowing fan as a rotation axis to be coupled with or separated from the housing. Accordingly, a user may easily and intuitively separate the suction panel and falling of the suction panel, which may occur when the suction panel is separated, may be effectively reduced using a supporting unit disposed at the suction panel. Also, the housing and cover members which cover an outer perimeter of a lower portion of the housing may be coupled with each other by pressurizing the cover members toward the housing, thereby allowing the user to easily coupled the cover members.