Abstract: A portable HEPA filter chamber is provided with a pair of wheels and a handle whereby it can be moved by a person in the manner of a two-wheeled hand-truck. One or more inlet openings receive air from an area to be cleaned, dried, or decontaminated. An air outlet is adaptable to the air inlet height of standard, widely-used carpet dryer blowers. Pre-filters are provided in the portable chamber upstream of the HEPA filter. Strapping holds the blower unit to the outlet of the filter chamber. Support wheels and a handle enable convenient hand-truck type operation to facilitate movement of the combination when and as needed in the area being dried. An upstanding perimeter flange, and the handle, when retracted, serve as a fence to stabilize multiple chambers, when stacked for storage or transportation in a truck. The exterior wall of the chamber is shaped for inter-fitting with others to minimize floor space for storage and transporting.

Abstract: Disclosed are a vent disclosed for a septic system, including a conduit configured to vent gas therefrom, including a leg configured to conceal a portion of, and convey gas from, the conduit, and a method of concealing a conduit configured to vent gas from a septic system including sizing the conduit, then mounting on the conduit a leg configured to convey gas from the conduit.

Abstract: A smoke evacuating system for use during surgical procedures, particularly minimally invasive procedures involving the use of a laser or cautery at a surgical site having an associated higher than ambient pressure, wherein the system includes a filter with a site side and an outlet side and a fluid conduit extending between the surgical site and the filter. The filter includes a filter media and a housing substantially surrounding the filter media with a space between the filter media and the housing to collect condensed vapor. The filter exhibits low resistance or a low pressure drop and resists fluid flow, whereby the higher than ambient pressure is not substantially diminished and generates a fluid flow in the fluid flow path tending to carry smoke to and through the filter.

Abstract: In a process facility for producing semiconductor wafers, a third physical unit is configured between two physical units that produce mini environments. The third physical unit has a laminar flow at right angles to the laminar flows of the two physical units and is operated with a slightly higher flow velocity. According to the Bernoulli equation, the static pressure in the third physical unit is therefore lower than in the surrounding two physical units. Advantageously, therefore, no contamination from the more highly loaded one of the two physical units passes over into the lesser loaded one of the two physical units.

Abstract: A system for removing contaminates from the air in a mail sorting room includes a vacuum unit and a filter, both of which may be located within this room. The vacuum unit creates a downwardly directed laminar flow of air which expels airborne particulates (e.g., anthrax spores) from the room. Prior to being expelled, the air is passed through a multi-stage filtration unit which includes a HEPA filter and optionally a carbon V.O.C. filter for removing chemical agents. The mail sorting room preferably has a modular construction with removable walls, a ceiling, and a floor. The walls may be transparent or opaque. An air lock room may be attached to the mail sorting room to prevent air from the sorting room from accidentally escaping. A cleaning device may be included in the sorting room for individually cleaning the mail. This cleaning device may be connected to a conveyor which automatically advances the mail for cleaning.

Abstract: A method for producing a sealing connection between a filter mat of a tubular filter element and a metallic head piece encircling the filter element at one end. The head piece has an annular groove accommodating the edge of the filter mat. In order to reduce the internal diameter of the annular groove, the wall adjacent to the periphery is compressed by the periphery of the head piece towards the interior by applying a force of pressure which is directed radially towards the interior. The wall of the annular groove adjacent to the periphery is provided with an enlargement which enlarges the diameter of the head piece. The force of pressure for compressing the wall is applied in the area of said enlargement.

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 common structure, such as a home or other building, equipped with an apparatus, comprised of a positive pressure ventilator and a decontaminator device, can be immediately converted into a safe area for human inhabitants, machines, and materials, against chemical or biological attack. The apparatus takes in outside contaminated air, destroys and/or removes the biological or chemical agent, renders the air breathable, and forces the now decontaminated air into the structure. The structure is slightly pressurized with decontaminated air, causing positive and continuous outflow preventing contaminated air from entering the structure. The invention includes the apparatus, the method of positive pressure for preventing the entry of harmful agents, and kits and methods for further rendering a conventional structure into a safe area.

Abstract: A particle trap, such as in a honeycomb body, for separating particles out of an exhaust gas flow, includes a flow channel. An exhaust gas flow which includes particles flows through the flow channel. Internals, such as projections, humps, protuberances or the like are situated on one side of the flow channel. An opposite region of a channel wall is completely or partially porous. When a flow of exhaust gas which includes particles flows through the particle trap, the particles are diverted toward the porous channel wall, to which they adhere. They can then be removed again by regeneration. The particle trap and an associated process for separating particles out of an exhaust gas flow, are particularly advantageous when used in the exhaust system of an internal-combustion engine, in particular a diesel engine, specifically and advantageously in combination with a soot filter.

Abstract: An air filtration system for filtering air drawn into a substantially enclosed environment, such as a room, having an access opening includes a box having sidewalls, a flexible sheet of substantially air-impermeable material sized to cover the access opening of the environment, at least one filter having a body and a rigid rim encircling the body, and a pump having an inlet conduit through which air is drawn into the pump during pump operation. The components can be assembled to form a filter-supporting unit and, with the aid of the flexible sheet, sealed across the access opening to convert the environment into a shelter into which filtered air is pumped.

Abstract: An improved air filtration method and device for filtering solid contaminants from a stream of a flowing fluid such as internal combustion engine intake air. An imperforate housing has a tubular inlet exiting at its downstream end into a conically divergent first wall section terminating in a maximum diameter apex, and then continues in a convergent second wall section that terminates at a housing outlet opening of greater diameter than that of the housing inlet. A perforate filter element disposed within the interior chamber defined by the housing conical portions has an exterior configuration generally complimental to the housing interior, and thus has a first generally conical section divergent at a taper angle greater than that of the housing first wall section, and a second generally conical downstream section convergent from a maximum diameter apex of the filter at a fourth taper angle less than that of the housing second wall section and defining the filter device outlet.

Abstract: The present invention is waste treatment apparatus and process for diminishing the emission of malodorous off-gases during waste treatment. The apparatus typically includes a floatation panel formed from bonded foam particles that is adhered to a fabric layer. The present invention provides a reliable, cost-effective means by which to decrease the noxious odors generally associated with waste treatment.

Abstract: To provide a method of handling DPF capable of ensuring an expected value of a catching function of reclaimed DPF and eliminating waste of useful metals included by DPF, DPF(1) mounted to a diesel engine for catching PM included in exhaust is reclaimed until being brought into a nonreusable state and remounted to the engine by at least once and in remounting, the DPF(1) is mounted such that the DPF(1) is mounted in the direction reverse to a direction of mounting at a preceding time.

Abstract: A filter element (31) of a fluid filter, in particular of a cuboid or hollow-cylindrical outer shape, having an inflow side (A) and an outflow side (B) relative to a fluid to be filtered, with the filter element (31) comprising a number of pleat walls (35) each arranged in a continuous folding between pleat edges (35A; 35B), which pleat walls are comprised of a fluid-permeable filter material, in particular having impressed elevations (37) constituting depressions on the other side of the filter material, and wherein between adjacent pleat walls in each case on the inflow side (A), aggregates of hardened adhesive are provided on said elevations (37) adhering to the pleat walls, wherein on the outflow side (B) and/or the inflow side (A) supporting elements are provided, the projection of which onto the plane of the adjacent pleat wall is situated in each case at least section-wise within the depressions.

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: An expandable media filter structure is composed largely of biodegradable materials and is environmentally disposable. A plurality of pleated panels are interconnected at their edges so as to be collapsible for storage and shipping purposes but expandable for installation and use. A plurality of ribbons are ultrasonically welded to each of the panel edges, with the ribbon portions between edges being of substantially equal lengths, thereby maintaining equal spacing between the panel edges when the filter is in the expanded condition but allowing an easy collapsing of the filter for storage. Forming a part of the nondisposable framework for support of the disposable filter are a pair of end plates which are C-shaped in cross section for slidably receiving an end panel of the media filter therein. The depth of the C-shaped channel is sufficient to allow a plurality of the unexpanded pleats to be stored therein so that a single sized filter may be used for various sizes of cabinet openings.

Abstract: An expandable media filter structure is composed largely of biodegradable materials and is environmentally disposable. A plurality of pleated panels are interconnected at their edges so as to be collapsible for storage and shipping purposes but expandable for installation and use. A plurality of ribbons are ultrasonically welded to each of the panel edges, with the ribbon portions between edges being of substantially equal lengths, thereby maintaining equal spacing between the panel edges when the filter is in the expanded condition but allowing an easy collapsing of the filter for storage. Forming a part of the disposable filter are pair of end plates, with each being adhesively attached to an end panel and having a pair of slots formed near their ends for attachment to a nondisposable support structure. The end panels are formed of multiple layers of paperboard which are adhesively bonded and compressed into a U-shaped structure that rigidly supports the filter in its expanded condition.

Abstract: An expandable media filter structure is composed largely of biodegradable materials and is environmentally disposable. A plurality of pleated panels are interconnected at their edges so as to be collapsible for storage and shipping purposes but expandable for installation and use. A plurality of ribbons are ultrasonically welded to each of the panel edges, with the ribbon portions between edges being of substantially equal lengths, thereby maintaining equal spacing between the panel edges when the filter is in the expanded condition but allowing an easy collapsing of the filter for storage. Forming a part of the disposable filter are pair of end plates, with each being adhesively attached to an end panel and having a pair of slots formed near their ends for attachment to a nondisposable support structure. The end panels are formed of multiple layers of paperboard which are adhesively bonded and compressed into a U-shaped structure that rigidly supports the filter in its expanded condition.

Abstract: A gas stream moisture condenser assembly for use in a fuel cell power plant includes a gas stream flow path which is formed from a monolithic open cell foam body. The foam body is preferably formed from a high temperature material such as stainless steel, nickel alloys and iron-aluminum alloys, or from a ceramic material. The foam body includes open cells or pores which are contained within a metal or ceramic lattice. Coolant tubes are in contact with the foam monolith so as to cool the lattice sufficiently to cause moisture in the gas stream to condense on a lattice surrounding the pores of the foam. The condensate migrates from the foam lattice into a reservoir. The condenser can be used to remove water from gas streams, such as a cathode exhaust stream or a mixed burner and cathode exhaust stream, of a fuel cell power plant.

Abstract: A filter arrangement includes a first filter element having opposite first and second ends; an axial length between the first and second ends; and a plurality of flutes. Each of the flutes has a first end portion adjacent to the first filter element first end, and a second end portion adjacent to the first filter element second end. Selected ones of the flutes are open at the first end portion and closed at the second end portion; and selected ones of the flutes are closed at the first end portion and open at the second end portion. A sleeve member secured to and circumscribing the first filter element. The sleeve member is oriented relative the first filter element to extend at least 30% of the axial length of the first filter element. A seal member pressure flange at least partially circumscribes the sleeve member. The filter arrangement is particularly useful for gas turbine systems. Methods for operating and servicing filter arrangements preferably utilize constructions herein.

Abstract: The present invention provides a method and apparatus for replacing a filter. The apparatus includes a receptacle adapted to receive a filter that is capable of filtering a first area. The apparatus further includes at least one supporting member to support at least a portion of the filter and at least a portion of a replacement filter, wherein both the filter and replacement filter are adapted to filter at least a portion of the first area for a selected duration.

Abstract: A honeycomb structure which includes an inlet end and an outlet end opposing each other and a plurality of cell channels extending along an axis from the inlet end to the outlet end, the cell channels having different hydraulic diameters and being arranged in a checkerboard pattern between large-diameter and small-diameter cell channels, and an extrusion die for making the same.

Abstract: An air cleaner intake door is provided. An air cleaner with at least one sidewall and an opening defined in the sidewall has a door mounted over the opening. The door is rotationally movable between an open and a closed position and a cam extends from the door. A spring is in contact with the door for biasing the door towards a closed position.

Abstract: An air manager and/or chemical containment apparatus, for environmental control of fumes from wet bench units of semiconductor manufacturing facilities. The air manager system is suitable for installation in an open architecture wet bench or an enclosed mini-environment wet bench, and includes an air source and an air exhaust arranged for flowing air across an open chemical tank, to entrain fumes from chemical in the tank that otherwise may migrate from the immediate vicinity of the tank, and transport such fumes to the exhaust with the air flowed from the air source to the exhaust.

Abstract: A purification assembly (10) includes a block (20) and a purification element (40) disposed in the block (20). The block (20) includes first (50) and second (60) pieces attachable to each other and has first (22) and second (24) flow paths. The block (20) also includes a cavity (30) defined by the first (50) and second (60) pieces and disposed in the first (22) flow path. The purification element (40) is disposed in the cavity (30) and in the first fluid flow path (22), wherein fluid flowing through the first fluid flow path (22) passes through the purification element (40). A method for purifying gas includes directing gas through a purification assembly installed between a fluid device (10) and a manifold (2).

Abstract: Atmospheric air passes through a droplet separator and then through one or more filtration stages. The first filtration stage is made of bag-filter elements with filter medium made up of synthetic fibres with a density which increases in the direction of air flow. The air is introduced thereinto at its natural temperature when between approximately −20° C. and +5° C.

Abstract: A retaining box of a semiconductor wafer, includes an air supply port and an exhaust port. The air supply port has a piping joint and a first filter. Air is forcedly supplied through the air supply port. The exhaust port has a second filter. Inner air inside the retaining box is exhausted from the exhaust port. The retaining box accommodates a plurality of semiconductor wafers in an interval between each other.

Abstract: A filter assembly comprises a housing (44) with an inlet (45) and an outlet (43). A filter module (10) is within the housing (44) and communicates with the inlet (45) and the outlet (43) such that fluid passing to the inlet (45) is filtered by the filter module (10) before passing to the outlet (43). The filter module (10) includes a filter membrane (11) of hollow cylindrical shape having an air throughput of at least 1300 normal cum/hr per 250 mm of the axial length of the membrane at an inlet pressure of 2 barg. Such a filter module (10) can be used in a process system (40) in which the module (10) supplies sterile air and is testable in situ.

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 gas stream moisture condenser assembly for use in a fuel cell power plant includes a gas stream flow path which is formed from a monolithic open cell foam body. The foam body is preferably formed from a high temperature material such as stainless steel, nickel alloys and iron-aluminum alloys, or from a ceramic material. The foam body includes open cells or pores which are contained within a metal or ceramic lattice. Coolant tubes are in contact with the foam monolith so as to cool the lattice sufficiently to cause moisture in the gas stream to condense on a lattice surrounding the pores of the foam. The condensate migrates from the foam lattice into a reservoir. The condenser can be used to remove water from gas streams, such as a cathode exhaust stream or a mixed burner and cathode exhaust stream, of a fuel cell power plant.

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: 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: An exhaust aftertreatment filter and method is provided for filtering engine exhaust. Varying cell size is provided to spread trapped contaminant particulate along a distribution pattern reducing heat concentration and the risk of melting during regeneration, to minimize hot-spot meltdown otherwise caused by high density concentration of trapped particulate during regeneration. Cell size is varied by varying volume and/or height and/or width and/or length. Tapering of cells is also provided to change the cross-sectional area from the upstream to the downstream end.

Abstract: A parallel folded filter has good sealing properties between the folded filter web and the filter housing with the smallest possible amount of sealant. The filter is prepared with an elliptical filter blank, in which the rows (1) of fold lines (locations of predefined fold edges or imaginary fold edges) are at right angles to an axis (4) extending in the direction of the greatest longitudinal extension of the filter blank (2). The circumferential contour of the filter blank (2) is dimensioned such that it assumes a circular shape with the folds stood up (e.g., in a folded state). An adhesive bead (3) is applied along the circumferential contour. A ring-shaped filter housing accommodates the folded filter blank (2) such that a circumferential support surface is present for the adhesive bead (3).

Abstract: The present invention is an improved vacuum collection bag for vacuum cleaners and other appliances. By employing an impermeable bag and an air-permeable particle separator together with a tight seal against a vacuum system dirt tube in place of a conventional paper bag filter, it has been determined that the vacuum cleaner bag can be reused and significantly improve the filtration performance of the vacuum system.

Abstract: A germicidal method and apparatus for destroying airborne pathogenic bacteria such as tuberculosis bacteria using ultraviolet light. Air is drawn through a filter and into a sterilization chamber that is irradiated with ultraviolet light, and out through an exhaust opening. Consideration for the characteristics of the room in which the apparatus is installed and the positioning of the installation allows effective prevention of transmission of disease through expectoration and inhalation of airborne microdroplets of bacteria-containing sputum. The filter is of the low-density type which traps large particulates, but not small particulates of the size of the microdroplets, so that the filter does not become a bacteria colonization site. Baffles on the air intake opening and air exhaust opening to prevent ultraviolet light from escaping into the environment. The sterilization chamber is constructed such that the air passes the ultraviolet light bulbs twice as it circulates therethrough.

Abstract: Methods of separating fluids using capillary forces and/or improved conditions for are disclosed. The improved methods may include control of the ratio of gas and liquid Reynolds numbers relative to the Suratman number. Also disclosed are wick-containing, laminated devices that are capable of separating fluids.

Abstract: A substrate transport container having a carrier box including a container body and a door hermetically sealably covering an opening provided in the front of the container body. Partitions form a circulating flow path in the carrier box. The circulating flow path has a flow path in which air flows toward substrates and a flow path in which air flows toward a fan. A substrate carrying section is disposed in the flow path in which air flows toward the substrates to carry the substrates in such a way that the principal surfaces of the substrates are approximately parallel to the flow path in which air flows toward the substrates. A particle removing filter and a gaseous impurity trapping filter are placed on the upstream side of the substrate carrying section in the flow path in which air flows toward the substrates. A fan motor for driving the fan is incorporated in the carrier box to form an air current for circulating through the circulating flow path.

Abstract: A filter assembly for use with an associated candle having an elongated wick which in normal operation is disposed vertically. The apparatus further includes a filter, the filter including means for extracting smoke from the emissions of the associated candle, and a housing. The housing includes means for supporting the filter above the associated candle whereby the filter assembly reduces emissions from the associated candle when the associated candle is burning. In some forms of the filter assembly the housing includes means for directing combustion products from the associated candle to the filter. In other forms of the invention the filter assembly the means for directing surrounds at least the sides of the highest axial extremity of the associated candle.

Abstract: A structure made predominately of an NZP-type phase having the general formula RxZ4P6−ySiyO24, where 0≦x≦8, 0≦y≦6, R is Li, Na, K, Rb, Cs, Mg, Ca, Sr, Ba, Y, and/or lanthanides, and Z is Zr, Ti, Nb, Ta, Y, and/or lanthanidess, and optionally a sintering additive. The structure has an open porosity of at least 20% by volume, median pore diameter in micrometers of at least a value defined by the quantity [10−0.10(% open porosity)], both as measured by mercury porosimetry, and four-point modulus of rupture as measured on a solid rod of circular cross section, of at least 300 psi. Method of making the structure involves forming a mixture of NZP-forming raw material powders that are metal oxide sources capable of reacting to form an NZP-type reaction product, and/or pre-reacted powder having the above general formula.

Abstract: A method for emptying a dirt-filled container that is disposed in or on a transportable mobile vacuum cleaner includes the steps of coupling the transportable mobile vacuum cleaner via an emptying orifice of the container to a filling orifice of a structure that defines a receiving space and then emptying dirt accumulated in the container into the receiving space. A container, a vacuum cleaner and a dust collecting system are also provided.

Abstract: A separator tank assembly for use in a fluid compression system includes a separator element having a base, a support element mounted to the separator element, and a scavenge tube. The scavenge tube has a first end and a second end. The scavenge tube is fixed to the support element so that the first end of the scavenge tube is located at a predetermined position relative to the base of the separator element. The separator tank assembly also includes a tank housing having an outer flange at a top end thereof. The tank housing is dimensioned to receive the separator element. The separator tank assembly further includes a tank cover to attach to the outer flange of the tank housing. The tank cover has a cover orifice, and the separator tank assembly includes an adapter extending through the cover orifice. The adapter has a first section to connect to the second end of the scavenge tube and a second section to connect to a line component of the fluid compression system.

Abstract: The filter system for filtering particulate material from a generally unidirectional fluid stream comprises a first filter removably positioned in the fluid stream and a second filter removably positioned in the fluid stream downstream of the first filter. The first filter comprises a pre-filter and includes a layer of fluid-permeable material having a plurality of spaced-apart openings extending completely therethrough. The method of utilizing the fluid filter system of this invention is also disclosed and comprises the steps of: (1) removably positioning a first filter in the fluid stream; and (2) removably positioning a fluid-permeable second filter in the fluid stream downstream of the first filter.

Abstract: An integrated environmental control (IEC) system includes a decontamination Pressure Swing Adsorption (PSA) system in which a contaminated decontamination bed is purged through a purge exhaust duct and subsequently dumped overboard through a purge ejector. The energy from a high pressure drain duct serves as the primary motive force for the purge ejector to create a sub-atmospheric region therein and reduce back pressure upon the PSA filtration system. The reduced back pressure creates additional pressure drop across the PSA filtration system which improves performance. Risk of the purge exhaust duct and the purge ejector freezing in a low temperature environment is further minimized by mixing the purge exhaust with the relatively warmer high pressure drains.

Abstract: Exhaust gases from an internal combustion engine operating with leaded or unleaded gasoline or diesel or natural gas, are used for energizing a high-speed gas turbine. The convoluting gas discharge causes a first separation stage by stratifying of heavier and lighter exhaust gas components that exit from the turbine in opposite directions, the heavier components having a second stratifying separation in a vortex tube to separate combustible pollutants from non-combustible components. The non-combustible components exit a vortex tube open end to atmosphere. The lighter combustible, pollutants effected in the first separation are bubbled through a sodium hydroxide solution for dissolving the nitric oxide, formaldehyde impurities in this gas stream before being piped to the engine air intake for re-combustion, thereby reducing the engine's exhaust pollution and improving its fuel economy. The combustible, heavier pollutants from the second separation stage are piped to air filter assemblies.

Abstract: Provided is a novel system for vaporizing and purifying a gas to produce ultrapure chemical gases employed at a semiconductor processing facility. The system includes a liquified gas source, a vaporization purification bed, and a buffer tank. The liquefied gas source is in communication with the vaporization purification bed to provide a liquefied gas to the bed with an ultra-pure chemical gas generated in the purification bed. The purified gas is subsequently routed to a buffer tank and to a point of use therefrom.

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: The present invention discloses a fine particle-removing device connected to an exhaust path for a combustion exhaust gas, for removing fine particles contained in the exhaust gas. The apparatus has filter units, a fuel injection nozzle and an ignition device. The filter units are made of porous ceramic partitions that form a plurality of narrow paths extending in the flowing direction of the exhaust gas. The porous ceramic partitions capture the fine particles contained in the exhaust gas when the exhaust gas is introduced into one side and exhausted from the other side of each path. The fuel injection nozzle injects a fuel into exhaust gas intake portions of the filter units to burn the fine particles captured on the porous ceramic partitions.

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: An arrangement for filtering a particulate-laden fluid stream in a confined flow-through passage which includes a porous filter media extending thereacross and a velocity distribution control member cooperative with said filter media to preselectively control the velocity of the fluid stream as such fluid stream passes through the entirety of the porous filter media.