Abstract: The window filter apparatus provides a framework for holding filters within the frame of windows, thereby offering filtered outside air for a building, without having to run an air conditioner. The apparatus further provides for filtering noise and light by the same filters. Box fans are ideal companions for the apparatus for drawing additional outside air into a building. No additional hardware or tools are needed. There is no invasion of windows or window frames.

Abstract: A filter device has a filter housing and a filter element that is exchangeably arranged in the filter housing. A housing cover for closing the filter housing is provided. Interacting locking elements are arranged on the filter element and on the housing cover wherein the interacting locking elements have a locked position and a release position and are moveable between the locked position and the release position.

Abstract: An inlet barrier filter system for mounting on an aircraft to filter air prior to intake into an engine of the aircraft includes a frame having at least two curved frame members defining an opening. A filter element has a curved inward face and is received in the opening of the frame. The filter element includes filter media having pleats. A comb is attached to the frame and includes spaced-apart teeth that support the pleats. The comb is curved to generally conform to the curved inward face of the filter.

Abstract: Provided is a double-pleated air filter where filter elements each of which ensures an inter-pleat gap (air passage) by folding filter media in multiple layers and by defining a pitch, a thickness and a folding shape of the filter media are arranged in the V-bank-shaped structure whereby the air filter can be used with a large air volume due to a low pressure drop.

Abstract: An air filter group for motor vehicles includes a box body, provided with at least an air inlet opening and an air outlet opening, and further includes a filter element configured to be located internally of the box body, in which the air outlet opening is configured such as to receive the filter element from the outside of the box body, and in that the filter element includes a seal on an end side thereof. The seal being provided with a border configured to be at least partially rested on the edge of the air outlet opening and being such as to enable fastening the filter element to the box body, the filter element being maintained in position by compression directly by the conveyor of the clean air outlet.

Abstract: A filter includes a spacing member and a filter element having two layers laminated together with the spacing member such that the spacing member extends between the filter element layers. The spacing member spaces apart the filter element layers to define an opening between the filter element layers.

Abstract: A filter element, and filter apparatus, include a filter pack, a seal member, and a seal support frame operatively connecting the seal member to the filter pack. The seal support frame includes an annular extension, which is preferably canted at an oblique angle to a longitudinal axis, for supporting the seal member. The seal support frame also preferably includes a first end thereof including the annular extension, and a second end thereof spaced from the first end thereof along the longitudinal axis, with the first and second ends of the seal support frame joined by a hub of the outer peripheral sidewall of the seal support frame to define a cavity within the seal support frame for receiving the filter pack. The first and second ends of the seal support frame, and the filter pack are preferably joined and sealed to one another by a single bead of adhesive.

Abstract: The invention provides a filter pack of which the mass is not increased, and moreover, the effective filter medium area is not reduced, and of which the pressure drop is sufficiently low, and the strength is sufficiently high, and an air filter using this. A pleated air filter pack is configured in such a way that dot embossed projections are provided on front and rear surfaces of a filter medium made of a non-woven fabric, the filter medium is folded in zigzag shape along creases of pleats, and the opposing embossed projections are brought into contact with each other when the filter medium is folded, thus maintaining the intervals between the filter media.

Abstract: A high temperature filter and a self-cleaning filtering system for filtering media, such as biomass materials, are provided. The filter and filtering system is particularly useful in the filtration of syngas in a plasma arc gasification process to remove char and other particles of down to a submicron size from the syngas. The filter is formed from a pleated metal mesh material including end caps secured by a high-temperature metallic paste or adhesive, such that the filter is capable of withstanding operating temperatures up to 2000° F. The system includes a backflush unit for injecting cleaning media therein to remove trapped char and other debris from the filter. At least two filtering systems can be placed in parallel so that one system can be cleaned while the other is operating. A method for filtering media is also disclosed.

Abstract: A filter arrangement includes a media construction comprising a corrugated sheet secured to a flat sheet rolled into a coiled construction. A frame and a first seal member are provided. The frame secures the first seal member to the coiled construction. The first seal member is preferably oriented to form a radial seal with a housing. A second seal member is secured to the outer annular surface of the coiled construction. The second seal member includes a gasket extension having first and second opposite ends; an attachment portion; and a protrusion extending from the attachment portion. The second seal member is preferably oriented to form an axial seal with a housing. Air cleaners preferably utilizing filter arrangements as described herein operably installed within housings. Methods of installing, filtering, assembling, and servicing preferably include arrangements as described herein.

Abstract: Assemblies, features, and techniques for pulse jet air cleaner assemblies and their operation are described. In general, the techniques relate to: providing for advantageous dust egress arrangement from the housing; and, preferred pulse control logic. This can be advantageous in field operation.

Abstract: A filter element (100) according to the invention comprises a filter volume (150) having an inflow side and an outflow side defining an average flow direction. The filter volume (150) has an axis substantially parallel to the average flow direction and further comprising a casing (140) delimiting the outer boundary of the filter volume in the direction of the average flow path. The casing (140) is gas impermeable in radial direction. The filter volume (150) is filled with a filter material (111) comprising fibers, a majority of the fibers (102) at least partially encircle the axis.

Abstract: A dust filter of an evaporated fuel treatment device is taught that preferably include a filtration member for filtering air introduced to an atmosphere introduction path, and a casing receiving the filtration member therein. The dust filter being disposed on the atmosphere introduction path of the evaporated fuel treatment device. The filtration member has an arcuate shape in cross section, and wherein the filtration member is arranged and structured such that air flows in a radial direction thereof, so as to be filtered.

Abstract: A filter arrangement includes a media construction comprising a corrugated sheet secured to a flat sheet rolled into a coiled construction. A frame and a first seal member are provided. The frame secures the first seal member to the coiled construction. The first seal member is preferably oriented to form a radial seal with a housing. A second seal member is secured to the outer annular surface of the coiled construction. The second seal member includes a gasket extension having first and second opposite ends; an attachment portion; and a protrusion extending from the attachment portion. The second seal member is preferably oriented to form an axial seal with a housing. Air cleaners preferably utilizing filter arrangements as described herein operably installed within housings. Methods of installing, filtering, assembling, and servicing preferably include arrangements as described herein.

Abstract: Various high performance, high efficiency filter media are provided that are cost effective and easy to manufacture. In particular, various filter media are provided having at least one layer with a waved configuration that results in an increased surface area, thereby enhancing various properties of the filter media. The filter media can be used to form a variety of filter elements for use in various applications.

Abstract: A dust filter of an evaporated fuel treatment device is taught that preferably include a filtration member for filtering air introduced to an atmosphere introduction path, and a casing receiving the filtration member therein. The dust filter being disposed on the atmosphere introduction path of the evaporated fuel treatment device. The filtration member has an arcuate shape in cross section, and wherein the filtration member is arranged and structured such that air flows in a radial direction thereof, so as to be filtered.

Abstract: Embodiments of the invention generally include a filter assembly having a media pack having a single web of pleated media having at least two mini-seated regions arranged in non-linear orientation. In one embodiment, a filter assembly includes a media pack defined by a single web of media, and an adhesive layer coupling a flat end of the media pack to a frame assembly to from a lap joint. In another embodiment, a filter assembly includes a media pack sealed to a frame assembly. A discontinuous layer of adhesive couples at least one edge of the media pack to the frame assembly.

Abstract: A filter element and filter apparatus, and a method for fabricating a filter element, include a filter element having alternating layers of a face sheet material and a convoluted filter material, with the alternating layers forming substantially longitudinally oriented flutes that extend axially along, or past, a radially acting seal, into previously unused portions of the cavity of a filter housing. In some embodiments, structures such as struts extending partially across an outlet end of the filter element, or a rigid web formed by a layer of resin extending axially a potted length into pome of the flutes from the outlet end resist axially oriented pressure forces on the alternating layers.

Abstract: An air filtering device and an air cleaning system of a semiconductor manufacturing apparatus to reduce cost and increase manufacturing productivity. The air filtering device may include a frame having an open aperture coupled to an air supply line. A buffer frame configured to be inserted into the frame may include a plurality of slot parts, each slot part having a plurality of air in/out apertures through which air may flow in or out from the buffer frame. A plurality of filters may be releasably fastened to the plurality of slot parts to filter pollution material contained in air flowing through the air in/out apertures. An air interrupter for interrupting air flowing through the air in/out apertures may be used when replacing the plurality of filters, thereby providing purified air to the semiconductor manufacturing apparatus during the replacement.

Abstract: The present disclosure relates to radial wall flow particulate filters comprised of ceramic material. The filters include a filter body that has a plurality of adjacent troughs circumferentially arranged around a longitudinal axis.

Abstract: The Economic Air Filter for Household according to the present disclosure includes two Claims: (1) A re-usable metal net AIR FILTER CASE/FOLDER/SANDWICH for holding the AIR FILTER SHEET; (2) The TWO WAY AIR FILTER SHEET series, and AIR FILTERING FOLD SHEET. The re-usable metal net Air Filter Case/Folder/Sandwich (Claim I) designs are a creation to reduce the air filters waste amount for Green Environment Campaign. The TWO WAY AIR FILTER SHEET series (Claim II) is another creative idea to form a complete set of the Economic Air Filter for Household. The AIR FILTERING FOLD SHEET is designed with dust pocket for household who have pets or newly painted rooms. The basic Two Way Air Filter Sheet is disposable as regular household garbage, and effectively filtering out the Debris & Lint and Household Dust to protect Heating and A/C system. With filter elements in inner layer in series that can target different problems.

Abstract: A filter device comprises a filter element that is comprised of at least two radially nested filter bellows, wherein at least one filter bellows is to be flown through in the radial direction and a flow space for the fluid is formed between the filter bellows. Each filter bellows is embodied as a star-shaped filter with filter folds arranged in a star shape. On at least one end face of the filter element a sealing ring is arranged between a filter bellows and the filter housing.

Abstract: A filter element includes a first, outer tubular construction of filter media defining a first open filter interior; a second, inner tuber construction of filter media defining a second open filter interior; the second construction of filter media being located within the first open filter interior and being radially spaced from the first construction of filter media; and the second open filter interior defines an unfiltered fluid channel. A plastic inner liner is within the first open filter interior to support the first construction of filter media. A plastic outer liner is within the first open filter interior to support the second construction of filter media. A filtered fluid channel is defined between the inner liner and the outer liner. A brace arrangement is between the first and second tubular constructions. The brace arrangement can include a spring, a plurality of gussets, or a solid spacer.

Abstract: A portable air treatment device and system including a filter retaining mechanism for selectively retaining a replaceable filter assembly. The filter retaining mechanism includes a rigid, non-moveable body that reduces a size of an access opening to a filter chamber otherwise formed by the air treatment device housing, along with a bearing surface. The rigid body serves as a catch or latch, preventing unexpected dislodgement of a filter assembly from the chamber. The bearing surface is also rigid and non-moveable, and provides a means for easily inserting and removing a primarily non-permanently deflectable filter assembly about the rigid body.

Abstract: Foldable filter assemblies and methods of use thereof are disclosed. An air filter assembly including a frame having opposed substantially rigid end members and a flexible side member, the end members being connected to the flexible side member, and an air filter media connected to and disposed within the frame such that the frame is adapted to be disposed in a planar use position, and the end members of the frame are adapted to be moved toward each other prior to installation into the planar use position.

Abstract: An intake air cleaner element for an internal combustion engine is described. It consists of a winding filter, the winding filter being flown through axially and featuring in the area of one front end at the circumference a sealing and/or fastening element. In the center of the winding filter an end-to-end cavity is provided. At least at one front end of the winding filter one autonomous cap is located for closing the cavity.

Abstract: A filter element for removing particles from a particulate laden fluid stream includes, in an exemplary embodiment, a filtration media formed into a tubular configuration and that a plurality of circumferentially spaced apart pleats. The filter element also includes at least one melt-extruded retention strap extending circumferentially around the filtration media to limit radial movement of the filtration media at operating temperatures up to about 500° F. Each melt-extruded retention strap is formed from a melt extrudable amorphous thermoplastic polyimide.

Abstract: A filter arrangement includes a media construction comprising a corrugated sheet secured to a flat sheet rolled into a coiled construction. A frame and a first seal member are provided. The frame secures the first seal member to the coiled construction. The first seal member is preferably oriented to form a radial seal with a housing. A second seal member is secured to the outer annular surface of the coiled construction. The second seal member includes a gasket extension having first and second opposite ends; an attachment portion; and a protrusion extending from the attachment portion. The second seal member is preferably oriented to form an axial seal with a housing. Air cleaners preferably utilizing filter arrangements as described herein operably installed within housings. Methods of installing, filtering, assembling, and servicing preferably include arrangements as described herein.

Abstract: A disclosed laminated sheet to be wound around an outer surface of an exhaust gas processing unit includes a first mat containing first inorganic fibers and a second mat containing second inorganic fibers, the second mat being laminated on the first mat. The average fiber length of the first inorganic fibers is larger than the average fiber length of the second inorganic fibers and the laminated sheet is to be wound around the exhaust gas processing unit such that the first mat forms an outermost layer. Development of cracks in the outer surface of the laminated sheet can be prevented by winding the laminated sheet around an exhaust gas processing unit such that the first mat faces outward.

Abstract: The present invention provides one or more reinforcing members configured to act together with the adhesive bonding between filter media layers to further resist axial deformation forces such as induced by fluid flowing through the filter and thereby acting to retain the structural form and integrity of the filter element. Also disclosed is a method of reinforcing layers of a multilayer axial filter element against displacement of the layers.

Abstract: A filter element (1) wound from a plurality of filter layers in which the circumferential contour (5, 5?) of a cross-sectional area (4) of the filter element (1) has at least one circumferential contour section (5?) undercutting the envelope contour (6, 6?) of the cross-sectional filter element area (4).

Abstract: A filter arrangement includes a filter element, a frame construction secured to the filter element, and a handle member secured to the filter element. In preferred embodiments, the handle member is secured to the frame construction. Preferably, the filter element includes a central core member, wherein fluted filter media is coiled around the central core member. Preferably, the central core member includes a plurality of corrugations, wherein the corrugations mateably engage at least some flutes. Preferably, the handle member is integral with the central core member, and also includes a fastening member for connection to a frame construction on the filter element. Methods for cleaning air and servicing an air cleaner preferably include constructions as described herein.

Abstract: A filter element (1) with a tubular folded bag (2) of folded filter material, which has a plurality of fold blades (3) adjacent each other in the longitudinal direction (10) of the folded bag (2) a closure cover (4) is attached at at least one axial end (7) of the folded bag (2). In order to provide a filter element which can be bent to any desired curved form while maintaining a high degree of filtration performance, and can be produced in a cost effective manner, the fold blades (3) of a folded bag (2) are provided with a combination of diagonal folds extending at an angle relative to each other such that the fold blades (3) in the longitudinal direction (10) of the folded bag extend back and forth and thereby form a three-dimensional crown structure (18). At least the outer margin of the closure cover (4) has a form corresponding to the crown structure (18) of the fold blades (3).

Abstract: A filter element arrangement is provided which includes a media pack comprising Z-filter media, a preform and an overmold sealing a portion of the interface between the preform and the media pack, and also forming an air cleaner seal for the filter element. The overmold preferably comprises molded, foamed, polyurethane. A variety of media pack shapes can be used.

Abstract: A retrofit installation kit for use with such as an exteriorly located air conditioner condensing unit. The kit includes a flexible filtration screen and a set of customized fasteners which substitute for existing fasteners used to hold together the outer sheathing of the unit frame. The substitution of fasteners for the typical mounting screws utilized in the original unit construction precludes the possibility of such as damaging the unit due to drilling new fastener holes, this running the risk of rupturing fluid coils within the unit, or damaging other sensitive electrical or mechanical components.

Abstract: Air cleaner assemblies and components therefor are described. An example first or main filter cartridge is described which includes a media pack comprising strips of fluted material secured to facing sheets, oriented in a stack. The media pack defines opposite inlet and outlet flow faces, with flutes extending in a direction therebetween. The media pack is non-removably secured within a filter cartridge housing, at a location between opposite sections of a shell, typically secured thereto with an adhesive. The shell also defines a closed end, spaced from, but in overlap with, the outlet end face of the media pack. The closed end is typically curved and the shell typically provides either a d/b-shape or a u-shape. The filter includes an end member, with a outlet flow aperture arrangement therein, allowing for outlet flow from the filter cartridge in a general direction orthogonal to air flow through the media pack.

Abstract: A filter assembly for a structure having an air intake, the filter assembly including a filter media that is sized and shaped to cover the air intake. The ends of the filter media are connected by an elastic fastener, such that the filter media and the fastener encircle the structure and are under tension to hold the filter assembly on the structure. The filter media is a web of synthetic fibers, such as a web of fibers woven in a 3-dimensional pattern or a nonwoven mesh.

Abstract: A filter element, a safety element and fluid cleaner assembly. The fluid cleaner assembly generally includes a housing having a cover and a primary fluid cleaner section. The element generally comprises z-filter media, arranged in a straight through configuration, and an axial seal gasket positioned to extend continuously around at outer perimeter of the straight through flow construction. The fluid cleaner assembly can have a precleaner positioned therein. Methods of assembly and use are provided.

Abstract: A system is disclosed for a plate-shaped filter element (2) in a gas filter housing (1). The filter element (2) has filter material (3), which is folded in a zigzag shape, having filter folds closed at the front edges, and the closure (4) being made of essentially the same filter material which forms the filter folds, and having an edge area (5) projecting outward on both sides, and in which the two edge areas (5) are inserted into the housing (1) having insert struts (7), on the sides assigned to the end folds of he plate-shaped filter element (2), which engage the end folds (8) and ensure a leakage air rate of 0 to 4 m3/h at a differential pressure of at least 200 Pa.

Abstract: A fuel adsorption member 16 is fixed to an inner surface of a housing 13 by fixing pins 14. A fuel vapor leaking from an intake system of an engine is adsorbed by an active carbon included in an adsorption sheet member of the fuel adsorption member 16. The fuel adsorption member 16 is arranged along an inner surface of the housing 13. Accordingly, when an engine is operated, the fuel adsorption member 16 can reduce a ventilation resistance without being adversely affecting an intake air E. Further, the fuel adsorption member 16 is fixed to an inner surface of the housing 13 in accordance with a swaging of the fixing pins 14. Therefore, it is possible to prevent a damage of the fuel adsorption member 16 caused by a vehicle vibration, a fluctuation of an intake pressure or the like, and a reduction of a fuel adsorbing function caused by a wear of the active carbon.

Abstract: The invention provides a renewable composite filter media for removal of particles from a fluid stream. The filter media includes a membrane filtration layer comprising a porous polymeric membrane having an upstream side and a downstream side relative to the direction of fluid flow, a first depth filtration media layer having an upstream side and a downstream side relative to the direction of fluid flow, the first depth filtration media layer being disposed on upstream side of the membrane filtration layer; and at least one additional depth filtration media layer removably attached to the upstream side of the first depth filtration media layer. In this aspect, the first depth filtration media layer may be removably attached to the membrane filtration layer.

Abstract: An air cleaner has a casing body having an opening that communicates with a carburetor. The casing body includes a fitting part having an inner wall surface and a bearing surface. A sealing frame is inserted into the casing body and engages the fitting part of the casing body. The sealing frame has an outer peripheral part with an outer peripheral surface that is held in contact with the inner wall surface of the fitting part, a rear surface that is held in contact with the bearing surface of the fitting part, a front surface, and a groove formed in the front surface along a circumference thereof. A filter is disposed internally of the sealing frame. A cover covers the filter and the sealing frame.

Abstract: A reducing apparatus 16 for carbon particles PM is provided with one or more filters 19 of a wire mesh structure. The filter 19 is formed in a substantially short column-shape and is provided with a central through-hole 21 and a pair of exhaust ducts 26. The filter 19 is situated within an outer cylindrical casing 4 on an axis perpendicular to the axis of the outer cylindrical casing 4. Exhaust gas 1 discharged from a diesel engine flows from an outer periphery 22 side of the filter 19 to the central through-hole 21 side, wherein the carbon particles PM contained in the exhaust gas 1 are captured, burned and reduced. A plurality of filters 19, each formed in a hollow cylinder-shape, can also be provided side by side in the same direction as the axis of the outer cylindrical casing 4.

Abstract: A filter system including a method for self cleaning the filter system of an electronic equipment enclosure where air flow is monitored either by monitoring fan performance of air flow velocity through the enclosure. The system includes two filters elements, an upstream ASHRAE or HEPA filter element to block particulate matter and a downstream PTFE filter element to block water vapor. The ASHRAE or HEPA filter element is relatively inexpensive and easy to clean. The PTFE filter element is more expensive and difficult to clean. Thus, the cheaper filter is used to protect the more expensive filter from contaminants and to increase its useful life.

Abstract: A support framework for containing a granular medium that is used to remediate corrosive vaporous pollutants in an air stream. The support framework is situated within a plenum and comprises two concentric open-lattice weave cylinders made from corrosion resistant fiberglass reinforced plastic (FRP). The cylinders are of differing diameters and the granular medium is placed into and contained within the open space formed between the inside wall of the outer cylinder and the outside wall of the inner cylinder. The open-lattice weave design allows a greater radial flow through the medium per unit of time, doing so with less pressure drop and using less energy than the prior art. The use of FRP to form the cylinder walls allows creation of large units that are suitable for use in municipal and industrial settings, which was not possible previously.

Abstract: An air filtration system and method for removably attaching a filter element to portable air circulation devices and building HVAC air-intakes. One such system provides a filter portion having a circular outer periphery, an inner periphery a slit running from the outer periphery to the inner periphery that creates a first and second end of the filter portion, and a plurality of fastening mechanisms. One method includes manufacturing a plurality of air-permeable filter sheets, determining a shape of a portable electric fan that includes a fan cage, a support stand, and a motor casing, measuring a size of an inlet side of the fan cage and a size of the motor casing, cutting the plurality of filter sheets such that a plurality of filter portions are created, and attaching a plurality of fastening mechanisms to each one of the plurality of filter portions.

Abstract: A deep format filter element has a peripheral frame with outwardly protruding mounting flanges. The mounting flanges simulate the periphery of a shallow format filter element to allow the deep format filter element to replace the shallow format filter element in many situations.

Abstract: Conformal filter cartridges, filtering apparatus using the conformal filter cartridges, and methods of manufacturing the conformal filter cartridges are disclosed. The conformal filter cartridges may include a bed of filter material between a pair of support plates, wherein the major surfaces of the support plates facing the bed of filter material are each curved about at least one axis. The curvature imparted by the support plates provides the conformal configuration to the filter cartridge. The bed of filter material may be loose particulate filter material that may be retained under residual compression between the support plates within the filter cartridge.

Abstract: A filter includes a filter element formed of filter media, and a plastic framework molded and bonded to and structurally supporting the filter media. One embodiment desirably provides a two-component assembly consisting solely of two components, namely the filter media and the plastic framework molded thereon. In a further embodiment, the plastic framework includes a resilient seal integrally molded therewith and of the same plastic material thereof, eliminating a separate component for the seal. In a further embodiment, a filter combination includes a primary filter element and a secondary filter element. In a further embodiment, a resilient integrally. molded seal is provided.

Abstract: A filter arrangement includes a media construction comprising a corrugated sheet secured to a flat sheet rolled into a coiled construction. A frame and a first seal member are provided. The frame secures the first seal member to the coiled construction. The first seal member is preferably oriented to form a radial seal with a housing. A second seal member is secured to the outer annular surface of the coiled construction. The second seal member includes a gasket extension having first and second opposite ends; an attachment portion; and a protrusion extending from the attachment portion. The second seal member is preferably oriented to form an axial seal with a housing. Air cleaners preferably utilizing filter arrangements as described herein operably installed within housings. Methods of installing, filtering, assembling, and servicing preferably include arrangements as described herein.