Abstract: A honeycomb filter includes a honeycomb fired body made of silicon carbide particles. The honeycomb fired body includes cell walls, a peripheral wall, and a silicon-containing oxide layer. The cell walls are to define cells placed in a longitudinal direction of the honeycomb fired body. The cell walls have a thickness of about 0.2 mm or less. Each of the cells has a first end portion and a second end portion opposite to the first end portion in the longitudinal direction. Either the first end portion or the second end portion of the each of the cells is sealed. The peripheral wall constitutes a periphery of the honeycomb fired body. The peripheral wall has a thickness larger than the thickness of the cell walls. The silicon-containing oxide layer is provided on surfaces of the silicon carbide particles.

Abstract: The disclosure concerns air cleaners. Preferred air cleaners are shown which include a housing and a removable and replacement primary filter cartridge. Optional and advantageous features are shown. The preferred primary filter cartridge is conical in shape. A preferred optional safety or secondary filter cartridge is shown. Preferred methods of assembly and use are provided.

Abstract: An air filtration and air purification apparatus comprising: a first air channel; a second air channel; a divider that separates the first air channel from the second air channel; a first filter located in first air channel; a first filter located in the second air channel; a first air blower configured to pull air from the ambient environment generally into the first air channel, moving said air through the first filter, and returning said air into the ambient environment, creating generally a first air stream; a second air blower configured to pull air from the ambient environment generally into the second air channel, moving said air through the second filter and returning said air into the ambient environment, creating generally a second air stream; a control system that controls the activation and deactivation of the first and second air blower.

Abstract: Disclosed is multi-flow filter cartridge assembly that includes an elongated housing that has axially opposed proximal and distal ends and defines an interior cavity and first, second and third flow paths which extend from the proximal end of the housing to the distal end. The cartridge assembly also includes first, second and third filter elements. The first filter element is disposed within the interior cavity of the housing and conditions fluid that traverses the first flow path from a first inlet port to a first outlet port. The second filter element is disposed within the interior cavity of the housing and conditions fluid that traverses the second flow path from a second inlet port to a second outlet port. Lastly, the third filter element is also disposed within the interior cavity of the housing and conditions fluid that traverses the third flow path from a third inlet port to a third outlet port.

Abstract: A device for removing oil mist and odors from an airstream comprising a base having an air inlet in the lower end thereof for receiving an airstream. A first tubular filter has a first end and a second end. The first end is closed, and the second end is mounted on the base wherein the first tubular filter defines an inner chamber that is in communication with the air inlet. A second tubular filter is mounted on the base. The second tubular filter surrounds the first tubular filter and defines an outer chamber therebetween. An opening is formed through the base. The opening connects the outer chamber with the air inlet. A valve element is disposed in the base. The valve element allows flow from the outer chamber to the air inlet when pressure in the outer chamber exceeds pressure in the air inlet.

Abstract: A filter system is provided with a housing having a housing wall and a cover, the housing having a longitudinal axis. An inlet is arranged on the housing and feeds a fluid to be filtered into the housing. An outlet is arranged on the housing and discharges the filtered fluid. Filter elements each having at least one filter medium are arranged in the housing. At least one of the filter elements extends along the longitudinal axis. The filter medium has pleats extending along the longitudinal axis with outer and inner pleat edges. The outer pleat edges extend on the first side of the filter medium and the inner pleat edges on the second side of the filter medium and are opposite the outer pleat edges. The filter medium has a variable flow resistance along the longitudinal axis.

Abstract: The composite microporour filter material comprises a base-cloth layer, an upper adhesion layer attached to a top side of the base-cloth layer, and a lower adhesion layer attached to a bottom side of the base-cloth layer. The base-cloth layer is made of either polymide yarn base-cloth, polysulfoneamide yarn base-cloth, or polytetrafluoroethylene filament base-cloth. The upper adhesion layer is made of a mixture of polysulfoneamide short-staple and polymide short-staple; the lower adhesion layer is made of a pure polysulfoneamide short-staple. The upper adhesion layer and the lower adhesion layer are attached to two sides of the base-cloth layer by entangling which is adopted by needle punching, spunlacing or a combination thereof. The present filter material is temperature-resistant and corrosion-resistant and has features of a low manufacturing cost and the high filter precision.

Abstract: A filter device for separating paint overspray from a raw gas flow containing overspray particles is provided, including at least one filter element, to which at least a part of the raw gas flow is feedable, and a clean gas chamber, to which the raw gas flow filtered by the filter element is feedable as a clean gas flow. In the event of a filter rupture at at least one filter element of the filter device, contamination of the clean gas side of the filter device and regions downstream of the filter device of a painting installation containing the filter device is kept as low as possible through use of at least one safety filter arranged downstream of the at least one filter element and associated with the clean gas chamber such that at least part of the clean gas flow is filterable in the event of a filter rupture.

Abstract: The present invention pertains to a device for cleaning gases containing particles with a bellows and with at least one filter element arranged in the bellows. To ensure effective filtration without limitation of the mobility of the bellows, the present invention provides for at least one filter element to be fixed at a bellows inner flange of a bellows corrugation in a positive-locking manner.

Abstract: A honeycomb filter includes a plurality of cells and porous cell walls. The plurality of cells include exhaust gas introduction cells and exhaust gas emission cells. The porous cell walls each have a porosity of 55% or acre but not more than 70%. The porous cell walls include pores with a pore diameter of 40 ?m or more. The pores have a pore volume occupying 10% or more of a total pore volume of the porous cell walls. The exhaust gas emission cells have an average cross sectional area larger than an average cross sectional area of the exhaust gas introduction cells in the cross section perpendicular to the longitudinal direction of the plurality of cells. A total volume of the exhaust gas introduction cells is larger than a total volume of the exhaust gas emission cells.

Abstract: Multi-stage filtration apparatus is provided. A fluid is forced through different filter stage elements allowing for removal of various contaminants from the fluid.

Abstract: Disclosed are an air filter element, a filter housing, and an air filter in which the air filter elements have a high filtering capacity and a long service life by increasing the filter surface of an air filter element taking into account structural requirements for the air filter housing.

Abstract: A dust removal device is provided which reduces the differences, among different dusty environments, in time at which dust collection is started until the time when possible clogging may occur to significantly increase the time from the start of dust collection until the time when possible clogging occur, while improving dust removal performance. The dust removal device includes main filter 10 that is formed of non-woven cloth 8 with charged fiber, duct 6-1 with main filter 10 disposed therein, sub-filter 11 including a plurality of cylindrical air trunks formed of a charged member, and duct 6-2 with sub-filter 11 disposed therein. Duct 6-1 and duct 6-2 are in communication with each other. In operation, air flows from duct 6-1 to duct 6-2. Main filter 10 in duct 6-1 has a larger vent cross-sectional area than sub-filter 11 in duct 6-2.

Abstract: Disclosed are an air filter element, a filter housing, and an air filter in which the air filter elements have a high filtering capacity and a long service life by increasing the filter surface of an air filter element taking into account structural requirements for the air filter housing.

Abstract: The present invention discloses a suspended ceiling filtration apparatus, which includes filtration units. The filtration unit includes a filtration part, two horizontal strip support legs and two longitudinal strip support legs. A support plate protrudes from the support legs. The filtration part is placed on the support plate, and a buffer filling part is disposed between the filtration part and the support plate. The buffer filling part is utilized to self-adaptively swell and shrink relative to the support plate according to a weight of the supported filtration part, the buffer filling part fills a gap between the support plate and the filtration part.

Abstract: Provided is smooth lifting up an exhaust gas purification device in the case of assembling the exhaust gas purification device in an engine. The exhaust gas purification device is provided with a plurality of filter bodies which purify exhaust gas discharged by the engine, and a purification casing which has each of the filter bodies built-in and is constructed by a plurality of purification cases. The purification casing is constructed by arranging each of the purification cases in an exhaust gas moving direction and connecting the purification cases by thick plate flanges. A suspension body is integrally formed in the thick plate flange.

Abstract: A filter cartridge includes a media pack having first and second opposite flow faces; the media pack comprising flutes extending in a direction between the inlet flow face and the outlet flow face; a frame mounted on the second flow face of the media pack; a seal support section extending from the base member; and first and second opposite and spaced blades extending from the base member and in a different direction from the base member as the seal support section. The first and second blades are embedded within the media pack through the second flow face. A seal member is oriented against the seal support section. The filter cartridge can be removably oriented in a cassette. The cassette and filter cartridge are removably oriented in an air cleaner housing. The cassette may include lugs to help position the cartridge in sealing engagement with the air cleaner housing. In another embodiment, the filter cartridge is cassette-free and includes a cartridge-handle projecting therefrom.

Abstract: A filter module for the separation of overspray from overspray-laden cabin air of coating plants, in particular of painting plants, having a filter housing which delimits a filter chamber through which overspray-laden cabin air can be conducted in a main flow direction. A plurality of separation elements composed of a separation material which is permeable to the cabin air is arranged in the filter chamber such that a flow labyrinth is formed between the separation elements. A separation device and a plant for coating articles having such a filter module is also provided.

Abstract: Provided are a filter medium for a filter, which makes it possible to obtain a filter high in collection efficiency, low in pressure loss and long in filter lifetime, a method for producing the same, and a filter using the filter medium for a filter. A filter medium for a filter is used as a constituent member of a filter and composed of a wet type nonwoven fabric, wherein the filter medium for a filter has a multilayer structure of two or more layers, and there is no interface between the above-mentioned two layers.

Abstract: Certain embodiments of the invention may include filters, systems, and methods for reducing can velocity. According to an example embodiment, a filter is provided for filtering particles from air or fluid. The filter includes a first end and a second end, wherein the first end includes an aperture; one or more sections of pleated filter media including a plurality of pleats formed in a substantially conical shape about an axis and around an inner void region in communication with the aperture, wherein a diameter associated with the first end aperture is greater than a diameter associated with the second end; and one or more radial support regions in circumferential contact with at least one of an outer surface of the filter media, wherein spacing of at least some of the plurality of pleats are maintained at least in part by the one or more radial support regions.

Abstract: A duplex fluid filter assembly allows extended life between filter replacements, by automatically back-flushing one filter unit with clean fluid from another filter unit of the duplex assembly.

Abstract: A membrane cartridge is manufactured by repeatedly folding and joining two strips of membrane to form a cross-pleated cartridge with a stack of openings or fluid passageways configured in an alternating cross-flow arrangement. The cartridge can be modified for other flow configurations including co-flow and counter-flow arrangements. Methods for manufacturing such cross-pleated membrane cartridges, as well as apparatus used in the manufacturing process are described. Cross-pleated membrane cartridges comprising water-permeable membranes can be used in a variety of applications, including in heat and water vapor exchangers. In particular they can be incorporated into energy recovery ventilators (ERVs) for exchanging heat and water vapor between air streams being directed into and out of buildings.

Abstract: A vacuum loader system is disclosed. In the vacuum loader system, the air inlet comprises a load-bearing member of a support structure that supports the system. The vacuum loader system also includes a filter chamber with co-located primary and secondary or safety filter elements. A safety filter element is at the center of the filter chamber, surrounded by primary filter elements. After the air flows through the primary and safety filter elements, it is directed downwardly, out of the filter chamber and back toward the blower, beyond which it is ultimately expelled through a silenced outlet. In some embodiments, the conduit that carries air from the filter chamber toward the blower may also be a member of the support structure.

Abstract: A filter device (10) for an internal combustion engine includes a separator that is embodied as a cyclone preseparator (26), a main filter element (36) exchangeably arranged in a housing compartment (68) of the filter housing (12), and a secondary filter element (38. The housing compartment (68) includes insertion stays (64). The main filter element (36) is embodied in as a double bellows filter including a first radially inwardly positioned filter bellows (40) and a second radially outwardly positioned filter bellows (42) surrounding it. Upon closing of a servicing housing cover (18) a sealing force is generated that acts onto the main filter element (36) and is maintained in the closed state of the servicing cover (18).

Abstract: A unique, multi-cartridge, easily re-configurable ambient air filter assembly (air contaminant control system) that removes particulate and gaseous chemical/biological contaminants from the incoming cathode air stream on a fuel cell or similar devices is described. The filter assembly is composed of individual filter cartridges (sub-assemblies) of various filtration media that are targeted at removing specific airborne contaminants. Combining specific sets of cartridges enables the filter assembly to be readily/rapidly configured (and re-configured) for specific applications—such as urban, rural, industrial, or military battlefield environments. Selection of correct media ensures complete removal of potential contaminants, enables rapid re-configuration to different environments, quick replacement of spent cartridges without disposal of non-spent media (reducing waste and cost).

Abstract: An air cleaner assembly, a main filter element, a safety element, combinations and methods for servicing an air cleaner assembly are provided according to the present invention. The air cleaner assembly includes an air cleaner housing and a main filter element. The air cleaner housing includes a safety liner that supports the main filter element, and can be configured to help reduce the tendency of the main filter element to rotate during use of the air cleaner assembly. A safety element having two open ends, for use with such an assembly is described.

Abstract: An air filtration media pack is provided having a plurality of layers of single facer media. The layer of single facer media includes a fluted sheet, a facing sheet, and a plurality of flutes extending between the fluted sheet and the facing sheet and having a flute length extending from a first face of the filtration media pack to a second face of the filtration media pack. A first portion of the plurality of flutes are closed to unfiltered air flowing into the first portion of the plurality of flutes, and a second portion of the plurality of flutes are closed to unfiltered air from flowing out of the second portion of the plurality of flutes so that air passing into one of the first face and the second face of the media pack and out the other of the first face and the second face of the media pack passes through media to provide filtration of the air. The fluted sheet includes repeating internal peaks facing toward the facing sheet and repeating external peaks facing away from the facing sheet.

Abstract: A filtration device that includes a pressure vessel having an inlet and an outlet, the filtration device configured to filter a pressurized fluid stream. In an embodiment, the filtration device has at least one disk-shaped filter element housed within the pressure vessel arranged to filter fluid flowing from the inlet to the outlet, and an inlet flow tube disposed within the pressure vessel proximate the inlet tube, wherein the inlet flow tube is configured to direct the pressurized fluid stream from the inlet tube towards a central portion of the at least one disk-shaped filter element.

Abstract: An inline water trap including a filter component and a panel connector configured to interface with a patient gas monitor. In one embodiment the inline water trap indicates to the patient gas monitor that it is in place and that the patient gas monitor may begin intaking and analyzing the filtered patient sample. The inline water trap receives a patient sample and filters water and contaminants from the sample before allowing the remaining gas portion of the sample to pass through to the patient gas monitor, thereby protecting the patient gas monitor from damage. One embodiment of the inline water trap additionally contains an RFID tag to indicate to the patient gas monitor that the correct type of inline water trap is engaged.

Abstract: An air and moisture separator for use with a waste tank and a vacuum source has a canister securable to the waste tank and having an inlet couplable to the waste tank and an outlet couplable to the vacuum source. An air flow path extends through the canister and through at least three different stages of air and moisture separation, including: a first air-turning stage coupled to the inlet; and a second stage of mesh or foam coupled to and subsequent to the first air-turning stage in the air flow path. An annular mesh or foam of greater density defines a third stage subsequent to the second stage, and circumscribes at least a majority of a circumferential perimeter of the mesh or foam of the second stage.

Abstract: A filter element (1) has first and second end sections (3A, 3B) of a flat filter medium which are secured to one another. A sheathing (4) is provided, wherein said sheathing is compressed by the end sections (3A, 3B) and surrounds the end edges (9) of the end sections (3A, 3B). Alternatively, the filter element (1) has first and second end sections (3A, 3B) of a flat filter medium, wherein the first end section (3A) has a fold (5) having two fold legs (6A, 6B). The end section (3B) of the second end section (2B) is then compressed between the fold legs (6A, 6B).

Abstract: A contaminate control device for filtering contaminates from a gas such as air is provided. The device includes a housing having a first inlet and a first outlet. An axial flow filter is fluidly coupled between the first inlet and the first outlet, the axial flow filter has a second inlet and a second outlet. A second filter disposed about the axial flow filter and is fluidly coupled between the first inlet and the first outlet, the second filter having a third inlet on an inner diameter and a third outlet disposed on an outer diameter. A flow restrictor is fluidly coupled between the second inlet and the first inlet.

Abstract: A filter assembly for removing particles from air flow across the filter assembly with a frame around a perimeter of the filter assembly, dynamic filter media for removing particles from air flowing from an upstream side of the filter assembly to a downstream side of the filter assembly that passes from a clean filter media storage chamber to a used filter media collection chamber within the frame on a second side of the filter assembly. The dynamic filter media is moved from the output from a turbine shaft modified by a gearbox to drive a set of drive traction rollers.

Abstract: An oil coalescing filter may be used in an oil separator tank with an industrial sized compressor/vacuum package, like a rotary screw compressor/vacuum or a liquid ring compressor/vacuum. The oil coalescing filter has filter media including: a first fiber media adapted for continuously removing oil; and a second fiber media adapted for final oil coalescing; the first fiber media having a greater basis weight than said second fiber media.

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: Fiber structures and methods are described that incorporate a body of a micron fiber modified by the attachment of discrete length, crimped nano-fibers. Numerous of these modified fiber structures can be assembled into air filter media. Further augmentations of the modified fibers and media can be implemented to improve filtration characteristics.

Abstract: The present invention is directed, in part, to air filtration media, air filtration media packs, air filtration elements, and methods of making air filtration media, media packs, and filtration elements. The air filtration media typically has a fiber composition that is primarily cellulose fibers, the media having a low solidity and low basis weight and being suitable for forming of structured flutes into the media. In certain embodiments a resin is added such as a solvent based resin.

Abstract: A crankcase ventilation filter assembly and components therefor, are described. In an example arrangement, the crankcase ventilation filter assembly is configured to be serviced from either the top or the bottom. A rotational indexing arrangement is to ensure appropriate orientation of an internally received filter cartridge, and other components of the arrangement are provided. Methods of assembly, servicing and use are described.

Abstract: Various methods and apparatus are disclosed that relate to one or more aspects of a filter structure that may remove contaminants from a stream of fluid. In various aspects the filter structure includes a front portion having a first orientation and a rear portion having a second orientation unique from the first orientation.

Abstract: A gas turbine air filter system includes a housing having an interior, an inlet arrangement, and an outlet hood having an outlet arrangement. The inlet arrangement defines an inlet flow face for taking in unfiltered air. The outlet arrangement defines an outlet flow face for exiting filtered air. The inlet flow face and the outlet flow face are angled relative to each other. The angle can range between 45-135° relative to each other. The system includes at least first and second stages of filter element arrangements held within the interior of the housing. The first and second stages of filter element arrangements are operably sealed within the housing such that air flowing through the inlet arrangement must pass through the first and second stages of filter element arrangements before exiting through the outlet arrangement. The outlet hood is free of the first and second stages of filter element arrangements.

Abstract: A gas-particulate filter canister includes a filter canister body and first and second canister end caps secured to opposing ends of the filter canister body. First and second filter cartridges are supported within the filter canister body for filtering a gas in series. The filter cartridges can be standalone units which are built independently and are installed into the filter canister body. The filter cartridges can be concentrically arranged and can include a particulate filter cartridge and a gas filter cartridge.

Abstract: Crankcase ventilation filter assemblies, features, components, and methods of assembly and use provide for convenient assembly; efficient space usage; and/or preferred operation.

Abstract: A filter system for an explosion-proof enclosure is described herein. The filter system can include a pre-filter assembly located outside the explosion-proof enclosure. The pre-filter assembly can include a pre-filter material configured to control air passing therethrough. The filter system can also include a filter assembly coupled to the pre-filter assembly. The filter assembly can further control the air received from the pre-filter assembly and passing therethrough into the explosion-proof enclosure.

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 gas purification process for treating a gas stream includes supplying the gas stream to at least one membrane unit to produce a permeate stream and a retentate stream. The retentate stream contains a lower concentration of at least one of water, hydrogen sulfide, or carbon dioxide as compared to the gas stream. The retentate stream is supplied to a molecular sieve unit to remove hydrogen sulfide to produce a treated gas product stream.

Abstract: An air filter assembly having a primary filter element, a secondary filter element, and a housing with an outlet tube is disclosed. The primary filter element is operably installed within the housing and has an interior volume. The secondary filter element is operably installed within the primary filter element interior volume and has an interior volume defined by a first wall extending between a closed end cap and an opposite open end cap. The open end cap of the secondary filter element defines a sealing structure having a first portion extending into the secondary filter interior volume. The outlet tube is operably connected to the housing air outlet opening and includes an inset collar being at least partially disposed within the secondary filter interior volume and extending over at least a part of the sealing structure first portion.

Abstract: A filter assembly for a motor-vehicle air cleaner comprises a main filter, an auxiliary filter set apart from the main filter, and a filter mount fixed to and configured to support the main filter and the auxiliary filter. In this embodiment, the filter mount is fittable in and removable from a housing of the air cleaner, and includes a sealing element passing between the main filter and the auxiliary filter.

Abstract: A filter arrangement is provided for filtering fluid flow in a turbine inlet system. The filter arrangement includes a support structure extending along an elongated axis within the turbine inlet system. A pulse or static cartridge filter for filtering a fluid flow is mounted on the support structure, with the support structure extending from an end of the cartridge filter. A pre-filter for filtering and/or coalescing the fluid flow is provided and is supported by the cartridge filter. A method of filtering fluid flow in the turbine inlet system is also provided.

Abstract: Combustion turbine air intake filter assemblies, their components, and methods of use are disclosed. In certain embodiments, the assemblies may be useful, inter alia, for extending high efficiency filter life, reducing turbine downtime for filter assembly changeouts, or adjusting filter assemblies to address changing local conditions after the assemblies have been put into service.

Abstract: A ventilator that is small, lightweight, and portable, yet capable of being quickly adapted to operate in a plurality of different modes and configurations to deliver a variety of therapies to a patent. A porting system having a plurality of sensors structured to monitor a number of parameters with respect to the flow of gas, and a number of porting blocks is used to reconfigure the ventilator so that it operates as a single-limb or dual limb ventilator. In the single-limb configuration, an active or passive exhaust assembly can be provided proximate to the patient. The ventilator is capable of operate in a volume or pressure support mode, even in a single-limb configuration. In addition, a power control mechanism controls the supply of power to the ventilator from an AC power source, a lead acid battery, an internal rechargeable battery pack, and a detachable battery pack.