Abstract: An air filter assembly for removing particulate matter from an incoming dirty air stream. The assembly includes a housing having an inlet, an outlet, a dirty air chamber and a clean air chamber and a non-cylindrical shaped elongated filter element arranged within the dirty air chamber constructed to remove particulate matter from an incoming air stream. A plurality of non-cylindrical filter elements are preferred. The non-cylindrical filter elements provide a decreased incoming air stream velocity when compared to conventional cylindrical filter elements having the same surface area. Alternately, the non-cylindrical filter elements allow an increase in the volume of incoming air when compared to conventional cylindrical filter elements having the same surface area.

Abstract: Embodiments of a key system for filters and their connecting heads/holders are shown. The filter cartridge and its holder each have a keyed surface, one being a protruding “key” and one being a recessed “lock”. Cooperation of these keyed surfaces is required in order for the filter cartridge to be installed in the holder, so that mismatched cartridges cannot be installed into the holder, for example, to prevent a particular type of cartridge from being placed in a filtration or other process where it would be inappropriate, or undesired. The keyed surfaces are selectively locate-able preferably at different circumferential locations on a perimeter of the filter and a corresponding location on a perimeter of the head/holder. The perimeter may be, for example, on an outer shoulder surface of a filter and an inner surface of a valve head, or on outer and inner surfaces of connectors that provide a liquid seal between the filter and the head/holder.

Abstract: Filter has a filter main body, a container, a first counter room, and a second counter room. A counter air is introduced into the first counter room through the counter air discharge valve, and fine particles trapped in the filter main body are removed and transported to the second counter room. Then, the removed fine particles are further transported to a process portion isolated from an exhaust gas passage, and the fine particles are fired in the process portion. Since the process portion is isolated from the exhaust gas passage, the fine particles in the process portion are not returned to the filter main body. Moreover, since the fine particles are transported by the counter air only to the second counter room, it is possible to reduce an amount of the counter air.

Abstract: A filter assembly (24) includes a first filter portion (80) with a first attachment (100) adapted to attach to a tubesheet (44) to support at least a portion of the first filter portion in a second plenum (40) and to permit fluid communication between the first filter portion and a first plenum (42). A tubular member (104) is fixed to and extends from the first attachment (100). A pleated filter element (120) is disposed adjacent to the tubular member (104) for support. A second attachment (140) is fixed to the tubular member (104) at a second end of the first filter portion (80) and defines an opening through which fluid may flow. The tubular member (104) is fixed to the first and second attachments (100, 140) with sufficient strength to support the weight of at least one other filter portion. A second filter portion (82) includes a third attachment (180) at a first end and defines an opening through which fluid may flow. A tubular member (186) is fixed to and extends from the third attachment (180).

Abstract: A particulate control system which includes a collector such as an electrostatic precipitator (ESP) is improved by incorporation of a collector, such as an electrostatically enhanced separator (EES) connected parallel with the collector and wherein the output flow from the collector is split and a portion of the output flow from the collector is directed through the separator. The input flow to the collector may also be split so that a portion is directed to the separator as well as the collector. A bleed line may also be employed to connect the separator to the collector resulting in a bleed flow from the separator to the collector.

Abstract: A ceiling module perimeter seal establishes an air-tight seal between modules forming a ceiling structure. The seal includes a groove about the perimeter of modules and aligned relative to a corresponding groove of an adjoining module. Aligned grooves in adjacent ceiling modules establish an enclosure between modules and apertures fluidly couple the enclosure with gel sealant troughs of the ceiling structure. Gel sealant flowing in the troughs enters the enclosure and thereby establishes an air tight seal between adjoining ceiling modules.

Abstract: A cartridge dust collector for maximizing the filtration of the air and removal of the pollutants and contaminants from the air stream. The cartridge dust collector comprising a housing having an air inlet, an air outlet, and a transverse wall. The housing further comprising a chamber. Conical shaped dust collector cartridges are mounted in the chamber between the air inlet and the air outlet with each dust collector cartridge in alignment with an access opening in a side wall of the housing. Provided in the housing in alignment with each access opening are spaced apart slide rails. The dust collector cartridges comprising a conical shaped media pack and a head plate secured to the upper end. Each head plate is carried on the slide rails, with the slide rails being spaced apart sufficiently to receive the media pack there between. Interlocking means are provided on adjacent head plates so that the cartridges can be assembled and removed from the housing in groups, rather than individually.

Abstract: A filter module has several discoid filter cells each having a central opening and stacked to form a stacked filter cell arrangement, wherein the central openings are aligned in the axial direction of the stacked filter cell arrangement. Closing rings are connected to opposed ends of the stacked filter cell arrangement and have a central opening aligned with the central openings of the filter cells. At least one tensile forces receiving element extends through the central openings of the filter cells and the closing rings and has axial ends connected to the closing rings. The closing rings have outwardly facing end faces each having a flat packing. Adaptors having a hollow-cylindrical portion and having an axial sealing surface are provided and are connectable to a further liquid-conveying component. The adaptors are connected to the closing rings such that the sealing surface presses axially against the flat packing.

Abstract: A clean room is provided through which clean air/recirculated air flow, and which comprises at least one processing unit and/or processing surface to which is supplied a gaseous medium of known composition, wherein the gaseous medium can be supplied to the clean room separately.

Abstract: An air cleaning system for an engine includes a main air cleaner for supplying cleaned air to an intake system of the engine and a sub-air cleaner for supplying cleaned air to an exhaust system of the engine. The main air cleaner includes a main air cleaner housing divided into a dirty air chamber and a clean air chamber by a first air cleaning element. The sub-air cleaner is disposed in the dirty air chamber, and has its own second air cleaning element, physically separated from the first air cleaning element.

Abstract: The atmospheric air possibly passes through a droplet separator (3) then passes through one or more filtration stages (5, 6). For the or the first filtration stage (5), use is made of bag-filter elements the filter medium of which is made up of synthetic fibers with a density which increases in the direction of flow of the air through this medium. The air is introduced thereinto at its natural temperature when this is between −20° C. and +5° C. approximately, outside of periods of freezing fog, supercooled rain or snow.

Abstract: An auxiliary device for filter exchange in an air filtering system of a clean room for allowing easy exchange of the filter used in the clean room. The auxiliary device for filter exchange may include a block plate having a width to be inserted through a filter frame extended downwardly toward the inside of a production line and equipped with a filter thereon; a support for supporting the bottom of the block plate and facing with the inside wall of the filter frame keeping a constant distance between them; and a tube having an air passage and installed to closely adhere to the filter frame along the circumference of the support for sealing. Adjustable seal inserts (such as corner-shaped inserts) may be provided for auxiliary or additional sealing effect, for example, at corners of a filter frame. A pressure indicator may also be provided for monitoring correct inflation of the tube.

Abstract: An air filter for vehicles which includes a main body defining a chamber, a discharge outlet communicating with said chamber for discharging clean air therefrom, a disc-type baffle positioned to divide the chamber and the discharge outlet into two filtering zones, supporting and positioning plates spring-mounted to opposite sides of the disc-type baffle, said supporting and positioning plates having a smaller dimension than the chamber, an air inlet which branches into separate guide tubes which communicate with the two filtering zones of the chamber and filter elements mounted on each of said supporting and partitioning plates and spaced apart from the walls of the chamber within the filtering zones, said filter means defining an open center core for receiving air from said guide tubes.

Abstract: An apparatus for separating and filtering pollutants from a fluid flow by using inertia to separate a proportion of the pollutants from the fluid flow passing through a constricted passage between a pair of filter elements to an outlet between the filter elements. The constricted passage causes the major portion of the fluid flow to be diverted to pass through the filter elements to the outlet in a direction whereby the filtered fluid flow exits into the outlet of the constricted passage. The apparatus also includes a device to periodically clean the filter elements whilst in position in the apparatus.

Abstract: A clean room filter array including a plurality of individual filter units arranged for delivery of filtered air to a clean room is supported by an individual suspension assembly including a fastener pin at outturned flanges of each filter unit that is unshared with any other filter unit so that the filter unit of a frame and fixed filter media is shiftable to and from the array independently of shifting the position or orientation of the other filter units or altering their respective suspension assemblies.

Abstract: A clean room ceiling filter system has a filter unit received by a filter unit receiving unit, the filter unit and filter receiving unit define cooperating latch and keeper structure that deflects into fastened engagement and releases from within the clean room by simultaneous pivoting of each latch member of each set of latch members. A tubular rod within the filter unit allows dispensing test material onto the filter media from within the clean room and adjustment of an air flow damper also from within the clean room.

Abstract: A device for separating particles contained in a gas stream and the associated process use a spongy type separator to process gas streams containing liquid or solid particles of a size substantially smaller than one micrometer. The separator is advantageously made of a reticulated foam pierced with channels for the flow of the gas streams.

Abstract: A filter chamber (8) for the vacuum system of a textile machine (1) comprises connection conduits (14, 15) between a vacuum source (7) and a suction conduit (9) running the length of the machine. A filter 10 is arranged inside the filter chamber (8) at an interval from the wall (13) of the filter chamber to divide the filter chamber (8) into a dirty-air area (18) and a clean-air area (17). The filter element (10) comprises at least two filter elements, a relief element (11) and a collector element (12). The relief element (11) is disposed in the filter chamber (8) at a spacing from the wall (13) of the filter chamber such that a primary component of the flow (16) of suction air from the conduit (14) to the conduit (15) for the vacuum source (7) moves parallel to or at an acute angle (I) to the relief element (11).

Abstract: An adjustable mounting system for filtration media including first and second upstanding panel members having vertically disposed support rails provided at their forward ends. A plurality of filtration media support frames, which have an adjustable V-shape, are mounted on the support rails between the panel members.

Abstract: A filter assembly (24) includes a first filter portion (80) with a first attachment (100) adapted to attach to a tubesheet (44) to support at least a portion of the first filter portion in a second plenum (40) and to permit fluid communication between the first filter portion and a first plenum (42). A tubular member (104) is fixed to and extends from the first attachment (100). A pleated filter element (120) is disposed adjacent to the tubular member (104) for support. A second attachment (140) is fixed to the tubular member (104) at a second end of the first filter portion (80) and defines an opening through which fluid may flow. The tubular member (104) is fixed to the first and second attachments (100, 140) with sufficient strength to support the weight of at least one other filter portion. A second filter portion (82) includes a third attachment (180) at a first end and defines an opening through which fluid may flow. A tubular member (186) is fixed to and extends from the third attachment (180).

Abstract: A filter element includes a filter media having an array of filter media panel members which are oriented at an angle of about 45° with respect to the air stream and are spaced so that the upstream edges of the panels overlap the downstream edges. Consequently, the air stream must pass through two panel members before exiting the filter element. The filter element may also include a secondary filter media in the form of a mat disposed over the downstream edges of the panel members. The filter element is used for filtering cabin air for vehicles or for other similar purposes as well as for filtering engine combustion air.

Abstract: A clean room filter array comprising a plurality of individual filter units arranged for delivery of filtered air to a clean room is supported by an individual suspension assembly comprising a fastener pin at outturned flanges of each filter unit that is unshared with any other filter unit so that the filter unit of a frame and fixed filter media is shiftable to and from the array independently of shifting the position or orientation of the other filter units or altering their respective suspension assemblies.

Abstract: Clean room ceiling in which the individual filter units are suspended solely by unshared suspension assemblies so as to be self-supporting and readily installable and removable individually and free of grids and other multiple unit supporting expedients.

Abstract: A filter assembly for use with a gas filtration system for separating particles from a high temperature gas stream is disclosed, the gas filtration system having a support member. The filter assembly includes an adapter adapted to be connected to the support member and having an opening extending therethrough. A filter element is removably connected to the adapter and extends through the opening for separating the particles from the gas stream. A removable clamping device engages the adapter and the filter element for removably connecting the filter element to the adapter.

Abstract: A sintered laminated structure including a plurality of ceramic layers made of ceramic materials different from one another, wherein each of the ceramic layers is provided with through-holes passing each of the ceramic layers.

Abstract: An air filtration system includes a housing with a blower therein having at least one inlet in flow communication with at least one ceiling mounted filter assembly and at least one ceiling mounted return air outlet in a preselected location in a ceiling. Preferably, the at least one filter assembly is located along a center line running from one end of the ceiling to an opposed second end and the return air outlet is mounted at a preselected location along a side of the ceiling.

Abstract: A modular clean room plenum includes a rectangular plenum body with an air barrier forming a top surface of the modular clean room plenum and a ceiling grid forming a bottom surface of the modular clean room plenum. The modular clean room plenums are attached to the primary support structure of a clean room building in whatever number and configuration is required by the clean room layout. By providing, in one modular component, the air barrier layer, the ceiling grid, the framework between the two layers, the fire sprinkler system, the air transfer ducts, the balancing dampers and all of the normal components of the ceiling grid, the cost and time required for construction can be significantly decreased.

Abstract: A candle filter holder and gasket assembly for holding a candle filter element within a hot gas cleanup system pressure vessel contians a filter housing (62), a candle filter attached to the filter housing and at least one associated gasket (74) and/or (76) where at least the one associated gasket has a construction that is selected from a single end rolled single spiral (75) or a two end rolled double spiral (71), both constructions having no separate center element and where the at least one gasket (74) and/or (76) functions to provide a seal between filtered gas and dirty or contaminated unfiltered gas within the gas cleanup system.

Abstract: An exhaust gas purifier, having three or more filter units parallel, wherein if at least one filter unit fails during its generation, it is compensated by the cyclic operation of the maining filter units so that the total function of the exhaust gas purifier is practically maintained. Electric heaters 14 are provided for regenerating individual filter units 3, and valves 4 are placed either at the entrances or at the exits of the units 3. While filter units 3 with opened valves 4 trap particulates, at least one filter unit 3's valve 4 is closed to send an electric current into the heater 14 for regenerating the filter unit 3. If the detected current is beyond a predetermined range, the current supply is shut off with the valve 4 still kept closed, and another filter unit 3 is regenerated in the same manner.

Abstract: A filtration system that rotates in conjunction with a blower wheel, and a method of attaching the same. The blower wheel typically has a plurality of fan blades arranged in a spaced relationship radially around a blower cavity to define a flow path extending radially outward from the blower cavity through the fan blades when the blower wheel is rotating. The filtration system includes a filter cartridge releasably attachable to the blower wheel in an engaged configuration. The filter cartridge includes a filter medium defining a generally center opening and a filter surface configured to be positioned generally adjacent to the fan blades and to extend across at least a portion of the flow path. In one embodiment, a plurality of flow passages extending through the filter medium.

Abstract: An air flow filter assembly of the side-loading type includes a filter guide track adjacent a side access opening for supporting multiple air filter elements in an operative position across the air flow passage. An internal closed loop seal assembly provides an effective, independent peripheral seal for each track-mounted filter element. A gasket retainer, mounted within the air flow passage adjacent the filter track, includes frame segments forming a rectangular gasket frame bordering one or more air flow windows or cells. A seal gasket is mounted on each gasket frame, with each seal gasket including a resilient flange portion extending in a closed loop around each air flow window or cell. The closed loop flange portion projects from the gasket frame for engaging and resiliently sealing along the face of a filter element supported on the filter track in air flow alignment with the air flow window or cell.

Abstract: A fan drive checking system, for an air conditioning system in a clean room having a fan filter unit (FFU), includes a flow sensor for sensing air flow inside a housing of a FFU. The sensor provides a sensor signal indicative of normal and adverse flow conditions in the housing. A control portion in data communication with the sensor outputs a control signal responsive to the sensing signal. An alarm in data communication with the control portion provides a warning when the control signal indicates the adverse flow condition.

Abstract: A filtration apparatus for an industrial vacuum system which includes a source of vacuum pressure, a collection vessel having an opening at one end for the collection of solid particulate matter and liquid waste material, and a conduit extending between the source of vacuum pressure and a second end of the collection vessel to apply the vacuum pressure to the collection vessel. A filtration chamber forms part of the collection vessel and is located between the two ends of the collection vessel. A filter media array is disposed in the filtration chamber, wherein the filter media array includes a plurality of non-woven or spun-bound pleated filter cartridges in at least two linear columns in the filtration chamber. In a preferred embodiment, control elements provide a maximum pressure differential across the body of the filter cartridges by providing an in-rush of ambient air into the filtration chamber when the pressure differential reaches a pre-determined quantity.

Abstract: There is provided an integrated exclusion filter and pressurizing device which prevents leakage of unfiltered fluid across the interface area between a rotating filtering apparatus and non-rotating bulkhead. The exclusion filter utilized is of the type which utilizes Boundary Layer Momentum Transfer methodology to achieve filtration, and which includes a cylindrical stack of substantially flat annular plates. A pressurizing device is utilized downstream from the exclusion filter to repressurize filtered fluid and direct the filtered fluid toward the interface area. Either all the filtered fluid or only a portion may be repressurized, and some of the filtered fluid may be directed toward the bulkhead itself to aid pressurization by creating a local stagnation region. The pressurizing device may utilize flow diverting vanes in a housing, including blowers, pumps, compressors, and fans.

Abstract: A dust collector filter cleaning control system employing high-pressure compressed air pulses, wherein the dislodged dust particulate is prevented from returning to the filters after the high-pressure compressed air cleaning thereof by briefly maintaining a positive low-pressure compressed air within the cleaned filters so that the particulate removed from the filters has time to drop into the collector hopper. The same source of compressed air is employed for both the filter cleaning air pulses and the sustaining low air pressure for preventing the re-entrainmnet of the dust particles into the filters.

Abstract: The present invention involves a porous rigid filter including a plurality of concentric filtration elements having internal flow passages and forming external flow passages there between. The present invention also involves a pressure vessel containing the filter for the removal of particulates from high pressure particulate containing gases, and further involves a method for using the filter to remove such particulates. The present filter has the advantage of requiring fewer filter elements due to the high surface area-to-volume ratio provided by the filter, requires a reduced pressure vessel size, and exhibits enhanced mechanical design properties, improved cleaning properties, configuration options, modularity and ease of fabrication.

Abstract: A pleat filter medium assembly wherein pleated fibrous filter medium forming troughs between opposed faces of adjacent filter medium pleats serve to include spacer inserts formed from intersecting sets of spaced strands of different cross-sectional thickness.

Abstract: A ventilator hood including an air blower suitable to draw fumes emanating from a fume producing apparatus through a contaminate filter, a charcoal filter, and a HEPA filter including filter condition indicating means, fire suppression means, and special adapter plate means for directly connecting the ventilator hood to the fume producing apparatus.

Abstract: An isolation bar is provided across the center of an air filtration unit for a laminar flow clean room. When a panel for partitioning the clean room is installed across the center of a filter of the air filtration unit, the isolation bar is used for fixing the panel thereon, thereby dividing the filter into two sub-filters, instead of using two conventional half sized air filtration units that require respective fans for smooth downstream flow of air. As a result, the air filtration unit including the isolation bar according to the present invention is capable of reducing cost and power consumption without any efficiency loss.

Abstract: An auxiliary device is used in the exchanging of a filter in a clean room having a production section, and a filter frame including a filter-supporting portion which supports the filter and an extending portion which extends from the filter-supporting portion toward the production section. The auxiliary device includes a block plate to be inserted in the extending portion of the filter frame, a support supporting the bottom of the block plate and facing an inside wall of the second portion of the filter frame, and an inflatable tube disposed along the circumference of the support. The tube is inflated to press outwardly and seal the device in the filter frame, thereby blocking the flow of any unfiltered air past the filter and into the production section. Thereafter, the filter is removed and a new filter is set in its place. Finally, the tube is deflated so as to free the device from the filter frame.

Abstract: A filter frame and media capable of withstanding repeated heating to high temperatures in an oxidizing environment, and a method of cleaning the same for indefinite use in a method of operating industrial paint booths. Progressive density, heat resistant, and preferably metal media paint booth filters are provided for replacement of existing filters in industrial paint booths. The filters are structurally resistant to cyclic heating to high temperature in an oxidizing bake-off oven where the paint residue accumulated on the filters is reduced to ash. After cooling, the ash is removed, and the filters returned to service, and the cycle is repeated. The filter comprises a frame section and a mesh media section which has a plurality of mesh portions. The mesh portions are preferably arranged in a series M.sub.1, M.sub.n-1, M.sub.n, wherein n is a positive integer of 4 or more, that are sized with the free face area A.sub.

Abstract: A sintered laminated structure including a plurality of ceramic layers made of ceramic materials different from one another, wherein each of the ceramic layers is provided with through-holes passing each of the ceramic layers.

Abstract: A combined air filter and diffuser for attachment beneath an air discharge duct discharging blown air into a room of a building. The air filter is configured to abut and be flushly mounted to the ceiling immediately below the duct. The filter has a housing including a track disposed to receive a flat air filter element so that the filter element lies horizontally proximate the ceiling. The housing has a slidably removable closure exposing the filter element for removal, which is accomplished by sliding the filter element horizontally from the housing. The housing includes a diffuser having pivotally mounted fins disposed immediately below the filter element. The housing mounts to the ceiling by receiving fasteners through small opening formed in an upper, horizontal wall of the housing.

Abstract: A particulate trap for use with a diesel engine is high in particulate trapping capacity and regenerating capacity and low in pressure drop, and yet is compact and inexpensive. This trap has a filter element made up of a plurality of tapered filter members formed from a fabric of heat-resistant metal fibers. The filter members have different diameters from each other and are nested concentrically one inside the other so that the adjacent filter members are positioned inversely. Each filter member is connected at its large-diameter end to the small-diameter end of the immediately outer filter member to alternately close the exhaust inlet and outlet ends of the gaps between the adjacent filter members. The filter element thus formed is mounted in a metal case provided in an exhaust line and used as a particulate trap. With this arrangement, it is possible to increase the particulate trapping area of the filter and the exhaust inlet openings without increasing the size of the entire trap.

Abstract: A cyclone dust collector wherein the interior of a cyclone body is divided into an upper space and a lower space by a partition member provided with a plurality of cylindrical filters, a suction port is so provided as to communicate with the lower space, a common discharge port is so provided as to communicate with the upper space, a collected dust recovery box is fixed to the lower end of the cyclone body, and a discharge blower is connected to the discharge port of the cyclone body. The dust collector is further provided with backwashing stop valves capable of opening and closing upper end portions of the filters and having backwashing nozzles, stop valve driving mechanisms adapted to open and close the stop valves, compressed air hoses connected to the backwashing nozzles of the stop valves, and backwashing electromagnetic valves for controlling the supply and cutoff of backwashing compressed air to the compressed air hoses.

Abstract: A filter assembly includes a filter cabinet defining an interior. A filter component is suspended within the filter cabinet interior. The filter component includes an outer frame having first and second rigid frame sections. The first and second rigid frame sections are pivotable, relative to each other about a pivot arrangement, such as a hinge. The first and second frame sections hold filter bags, such that the filter bags are suspended from the frame in the cabinet interior. Methods of changing a filter bag in a cabinet air filter assembly are provided.

Abstract: The present invention relates to an apparatus for separating liquids and solids from a gas stream and simultaneously coalescing liquids from the gas stream. The apparatus includes a closed vessel having a longitudinally extending length, an initially open interior, an input port at an extent and an output port at an opposite extent thereof. There is a partition located within the vessel interior that divides the vessel interior into a first stage and a second stage. There is at least one opening in the partition. A separator/coalescer filter element is disposed within the vessel to sealingly extend from within the first stage through the opening into the second stage. There is a chevron-type seal or an O-ring seal between the filter element and the opening.

Abstract: A tube type hot gas filter having a ceramic tube sheet supporting a plurality of tubular filter elements in a filter chamber includes an annular heating chamber surrounding the edge of said tube sheet and through which hot gas from the downstream side of the tube sheet passes as it exits the filter.

Abstract: A method and system for processing waste dries and reforms a sludge stream of the waste with a first reformed effluent stream to produce a gas effluent stream and a solids effluent stream. The gas effluent stream is reformed further to produce the first effluent stream, which is then directed back to the sludge stream.

Abstract: A filter holder and gasket assembly for holding a candle filter element within a hot gas cleanup system pressure vessel. The filter holder and gasket assembly includes a filter housing, an annular spacer ring securely attached within the filter housing, a gasket sock, a top gasket, a middle gasket and a cast nut.