Abstract: A grease stopper assembly is provided which captures and contains the effluent discharged from the roof vents of commercial cooking facilities. The assembly includes a plurality of two or four hanger assemblies attached to the vent duct curbing lip. A filter housing, including four independent and interchangeable filter compartments, is received and held by the hanger assemblies such that the assembled filter housing circumvents the duct. The filter housing is reinforced by brackets at the joinder of each combination of filter compartments, and the filter compartments, being pentagonal, are reinforced by brackets at the pentagonal apex. Alternate hanger assemblies are provided which include extension members of various lengths to suspend the filter housing at the desired distance from the roof. The filter compartments contain individually replaceable filter elements, of various combinations, including a porous, ultraviolet light resistant layer, and an impermeable bottom layer of plastic.

Abstract: An air-channeling apparatus for channeling the flow of air into a dirty-air chamber of a dust collector. The air-channeling apparatus having a top baffle member secured with respect to the ceiling of the dust collector, the top baffle member positioned at the entrance port to the dirty-air chamber and inwardly converging toward the ceiling to define a first opening therebetween. A first angled baffle member is connected to and angled away from the top baffle member while a rear baffle member having a plurality of openings is attached to the ceiling of the dirty-air chamber inward of the first opening. Furthermore, a vertical baffle member is positioned in registry with a portion of the air entrance port and spaced from the ceiling. The vertical baffle member is secured with respect to the ceiling so as to define a second opening with respect to the side wall having the air entrance port. Finally, a second angled baffle member is spaced from and secured with respect to the ceiling.

Abstract: A process for reducing pollutants, particularly nitrogen oxides from combustion gases during a combustion process that takes place while oxygen is supplied, includes providing oxygen needed for the combustion process by separating oxygen from a gas mixture containing oxygen and nitrogen in a two-step process including (a) enriching the gas mixture with oxygen in a first step to provide an enriched gas mixture; and (b) separating oxygen out of the enriched gas mixture in a second step, wherein, during at least one step oxygen depleted gas mixture is removed via an outlet provided with permeability means that cause the outlet to have a higher permeability for nitrogen than oxygen.

Abstract: Atmospheric Samplers are disclosed using aerogel filter material. The samplers include one or more cascaded impact sample stations with discs of aerogel as the targets. Ambient air carrying particulate matter is introduced into the sampler and the particles are captured by the aerogel in its pore structure. In certain embodiments, the aerogel filter is next transported to a position where it is fragmented by a spray of water. The fragmented aerogel and the captured particles are transported in the fragmenting water from the sampler for analysis. In one embodiment, the sampler is segmented with alternate nozzle and filter segments for easy assembly, sampling and disassembly for analysis of the captured particles in aerogel filters positions below the nozzles.

Abstract: In a filter housing (10) for the cleaning of dust laden, preferably hot gas ceramic filter candles (6) which are closed at one end are positioned in multiple levels one above the other and connected to laterally spaced apart supporting collectors (7). The supporting collectors (7) and the filter candles (6) within one level form a filter module which is divided into several mutually separate filter segments (18) in the shape of a circular sector. The supporting collectors (7) of one filter segment (18) are connected with a clean gas collecting channel (8) located on the same level, whereby a space remains in the center of each level which is free of collecting supports (7). Into each clean gas collecting channel (8) protrudes a cleaning lance (19) either directly or indirectly. (FIG.

Abstract: Apparatus and process for extracting powder from a stream of powder laden air drawn from a manual powder spray booth in a first embodiment, with a cyclone recovery system, typically containing two cyclone separators for separating the powder from the air. The cyclone separators have a breakaway design to facilitate cleaning. The resulting cyclone cleaned air is drawn through a prefilter section by a fan section having serially stacked fans. The prefilter section further separates powder from the cyclone cleaned air. The resulting prefilter cleaned air is next filtered in a final filter section and exhausted to the air surrounding the cyclone recovery system. The invention also relates to an improved cyclone separator which incorporates a perforated thimble between the downwardly and upwardly moving vortexes in the cyclone separator to reduce the pressure drop across the cyclone separator.

Abstract: An air treating system filters and dehumidifies contaminated air within an industrial plant. The air treating system includes a prefilter, a filter, a blower and an evaporator. A self-contained filtering unit directly communicates with a flume which receives fluid carrying contaminated particles from a machining center. Multiple self-contained filter and dehumidifier units are coupled with a single air conditioning compressor and condenser unit.

Abstract: A filter assembly for use in an air remediation system is provided. The filter assembly includes a first and second filter member, each of which has a plurality of openings to define a plurality of separate flow passages. A granular filter material layer is disposed between the first and second filter members. A frame structure containing each of the first and second filter members as well as the granular filter material forms the self contained filter assembly.

Abstract: An apparatus for the separation of ash from a flue gas stream has a hopper defining a flow chamber for the flue gas stream. The hopper has an upper portion and a lower portion. The upper portion defines a horizontal flue gas inlet opening and a vertical flue gas outlet opening. The lower portion defines a hopper collector opposite the inlet opening. A plurality of generally triangular planar block-off plates are oriented horizontally across the flue gas inlet opening and define a plurality of triangular initial flue path openings therebetween. A plurality of triangular flow plates are mounted to the block-off plates adjacent the flow path openings. The flow plates extend vertically downward toward the hopper collector whereby the flow plates define second flow path openings therebetween in fluid connection with the flue gas outlet opening.

Abstract: An air supply installation for a motor vehicle with an airflow passage connecting the air inlet with an air outlet, in which, viewed in the direction of flow, a water separator and an air filter are disposed behind each other. To obtain good separation of the water along with little noise generation, the water separator is embodied as an essentially vertically extending perforated wall, whose perforation holes respectively penetrate the wall with hole axes which are essentially parallel with each other, into which tubes have been inserted which preferably project from both sides of the wall. The air filter is disposed at only a short distance from the water separator and parallel therewith or inclined under an acute angle.

Abstract: An apparatus for primary air/oil separation for an oil-flooded air compressor, the apparatus includes a tank having a sidewall, a bottom end and a top end. The sidewall and ends define a tank separation chamber. The apparatus further includes a flow conduit for flowing an air/oil mixture from the compressor into the tank separation chamber. A primary separator element is located in the chamber and provides primary separation of the air/oil mixture. The primary separator element is flow connected to the flow conduit and includes a body with at least two discharge ends and an arcuate elbow flow connected to each of the at least two discharge ends. Each elbow has an outer peripheral portion and an inner peripheral portion. As the air/oil mixture is forced through the separator element, the oil is drawn to the outer peripheral portion and the compressed air is located in the inner peripheral portion. In this way, primary separation of the oil and the air is achieved.

Abstract: A device for separating liquid particles from compressed air transported therthrough, to protect machine parts connected thereto. The device is simple to manufacture, easy to maintain and can be made of low-cost materials such as injection molded plastics. A cylindrical housing has an inlet and an outlet at opposite ends thereof for coupling into the installation. A plurality of cones are formed into a vertical pile and closely spaced from one another. Each cone has a concave deflector surface opening out towards the inlet and an orifice cut out at one point on the edge of the cone. The cones are mounted inside the housing and their edges fit closely against the inner wall surface of the housing so that the orifices of consecutive cones are offset 180.degree. apart.

Abstract: In a device for separating oil from the blow-by exhaust vapors of a combustion engine, a filter stack is mounted in a canister having an inlet port for the intake of vapors from the engine, a gas outlet port for connection to a source of suction for causing the vapors to flow through the canister, and a discharge port communicating with a flow passage for removal of condensed oil. The filter stack is operatively arranged so that the vapors pass in contact with and through the filter stack. A plate partially surrounds the filter so that the oil in the vapors condense, and flow outwardly through the passage between the plate and the interior wall surface of the canister.

Abstract: An air cleaner construction including a precleaner arrangement, a filter assembly and a scavenger arrangement is provided. In the precleaner arrangement, air directed into the air cleaner assembly is subjected to some particulate removal. The air from the precleaner arrangement is then directed into the filter assembly, for further particulate material. The scavenger arrangement is constructed and arranged to scavenge separated particulate material from both the precleaner arrangement and the filter assembly. A pulse jet cleaner assembly is provided to facilitate removal of particulate material from the filter assembly.

Abstract: An air filter for an internal combustion engine has a housing with an interior chamber. The housing has housing walls at least one of which is in the form of a filter element. One of the housing walls has a suction opening for connecting the air filter to a suction channel of the combustion engine, wherein combustion air flows through the filter element into the interior chamber and from the interior chamber through the suction opening into the combustion engine. Air flow resistance elements are arranged in the interior chamber upstream of the suction opening. The air flow resistance elements are arranged in a first and a second row. The first and second rows are spaced apart from one another in the direction of flow of the combustion air. The air flow resistance elements of the first row of the second row are spaced laterally from one another to form gaps therebetween. The air flow resistance elements of the first row are positioned so as to be substantially aligned with the gaps of the second row.

Abstract: A diesel particle virtual impactor sampler provides for a total flow through a virtual impactor after the flow passes through a classifier that removes particles substantially larger than the cutoff point of the virtual impactor. The virtual impactor has two outlets, one for minor flow and one for major flow. In a preferred embodiment, filters are used for separately filtering the major and minor flows and collecting the particles carried thereby so that a determination of the concentration of particles above and below the cutoff point can be obtained. Alternately, the major and minor flows and the particles can be passed through particle analyzer instruments for a direct particle measurement of each of the flows.

Abstract: An air cleaner construction including a precleaner arrangement, a filter assembly and a scavenger arrangement is provided. In the precleaner arrangement, air directed into the air cleaner assembly is subjected to some particulate removal. The air from the precleaner arrangement is then directed into the filter assembly, for further particulate material. The scavenger arrangement is constructed and arranged to scavenge separated particulate material from both the precleaner arrangement and the filter assembly. A pulse jet cleaner assembly is provided to facilitate removal of particulate material from the filter assembly.

Abstract: A device suitable for use as a catalytic converter for the purification of exhaust gases from an internal combustion engine includes a ceramic monolith catalyst element resiliently mounted within a metallic housing. The metallic housing is in turn mounted within a hot gas chamber, such as an expansion chamber or muffler of a motorized vehicle. The ceramic monolith is wrapped with an insulating layer of inorganic ceramic fiber. At least one layer of intumescent material is disposed between the metallic housing and the inorganic fiber layer.

Abstract: A localized clean air system for operating theaters and a method of supplying clean air to a localized region in such situations. A fan is connected to a delivery head, which has an outlet for directing inlet clean air to the localized region in a particular pattern. A streamlined body is positioned in the outlet so that, in use, the clean air flows around the body and is modified thereby to form, immediately downstream of the body, an inner region of low velocity air encircled by an outer region of higher velocity air. Preferably, the streamlined body is symmetrical about its axis and is aligned with the clean air flow, for instance by being centrally positioned in the air outlet. The streamlined body preferably comprises a rounded head and a tapered tail. A diffuser is disposed in the clean air flow upstream of the streamlined body to minimize turbulence in the air flow.

Abstract: A mist collector for separating liquid components from a mist-laden gas stream to include a housing which houses three filter or separation stages. The stream is pumped through ducts into the bottom of the housing, and is pulled upwardly through the filter stages. The third filter stage comprises a commercially available filter assembly with a plurality of filter envelopes having bottom open ends secured across a midposition of the housing and upper closed ends supported adjacent the top of the housing. A doorway provides access to the inside of the housing. The upper closed ends of the envelopes are supported by hanger rods which connect to horizontally movable slides which slide within horizontal channels mounted to the internal side walls of the housing. The slides extend partially out through the doorway to enable the assembly to be connected to and disconnected from the collector outside of the housing.

Abstract: A condensate separator for separating liquids from gases comprises a tubular housing which is closed at each end by a body forming part of a flow element which extends into the tubular housing. The flow elements have axial bores, the bore of one flow element terminating in a transverse bore; the bore in the other flow element is an axial bore. In addition,filters are provided, preferably a coarse particle filter downstream of the inlet and a fine particle filter upstream of the outlet.

Abstract: A process is disclosed for the production of an improved catalytic converter for the cleaning of exhaust gases from internal-combustion engines, which includes a catalytic converter body through which the exhaust gases flow. The catalytic converter body is compression-molded from metal wire pieces or metal chips and is sintered after molding.

Abstract: Filters, catalytic converters and the like, for separating particulate matter and/or other constituents from a stream of gas or liquid so arranged that substantially all of the fluid passing through the filter must pass through separation material which permits the passage of the fluid therethrough while separating out and retaining the selected substances. Continuums of material are arranged parallel to each other in planar arrays, with periodic spacings between the continuums in each array. Such arrays are superimposed to form a "laminated" grouping, with each continuum in each array angularly oriented with respect to and in contact with the continuums in each next adjacent array which that continuum crosses. Internal distribution paths for the fluid thereby formed by the spacings between the continuums include passageways which extend laterally within each layer and cross-array or translaminar distribution channels produced by aggregations of intersecting paths of the lateral array channels.

Abstract: A muffler for a vehicle exhaust has anterior, intermediate and posterior sections. An array of parallel lateral plates are located in the upper part of the anterior section. Exhaust gas is introduced to the anterior section above the plates from an inlet duct opening into a header above the plates. A gas recirculation duct leads from the header back into the inlet duct to promote turbulent flow of gas through the plates. The posterior section of the muffler has a pair of filters through which the exhaust gas passes and an inflow duct leading into one of the filters into which air under pressure is introduced to mix with the exhaust gas.

Abstract: A steam processing apparatus and method in which a plurality of separators are disposed along the length of a cylindrical drum having inlet means for receiving a mixture of liquid and vapor and outlet means for discharging the separated liquid and vapor. The mixture is discharged against a baffle after which the separated liquid is passed to the drum liquid outlet and the separated vapor is passed upwardly by natural buoyant forces to the drum vapor outlet. The separators are disposed in a plurality of rows--two to each side of the axis of the drum along the length thereof.

Abstract: A device for de-aerating liquids flowing in medical liquid systems and in particular infusible liquids to be administered from a gravity-operated infusion set, comprises a hollow chamber through which the infusible solution flows and whose wall contains at least one aperture in which is inserted a liquid-tight, air-permeable de-aerating unit. By means of the device, air bubbles can be removed automatically from infusible solutions being administered.

Abstract: Arranged in the upper region of a drum which rotates about an axis there is a dust box for dust removal. The box is connected with a line, which leads outwards, by way of a laterally arranged discharge channel. Arranged between the dust box and a baffle rotor which rotates about the axis are baffle areas which form labyrinth-like passages for the dust to the dust suction openings in the dust box.

Abstract: A filtering device for removing liquid particles from air streams of air compressors comprising a housing with an open side of which the interior is partitioned into three successive compartments, a lid which seals the housing, two filter layers which are constituted by a perforated plate and a filter sheet made of suitable filtration material, and a vane-type impeller which is rotated by the pressurized air from an air compressor to help moving the air through the filter layers. Between any two successive compartments, an air passage is formed with one of the filter layers fixed therein to remove liquid particles, such as water and oil particles. The removed liquid will be stored in reservoirs and then drained off.

Abstract: A supplied air respirator system is described for use in an enclosed work area wherein an asbestos abatement action is being conducted. A conventional air filtration unit is provided and which has its discharge side in communication with a clean air box. Positioned within the clean air box is a HEPA filter intake box having a HEPA filter contained therein with the discharge side thereof being connected to one or more air pumps. The discharge side of each of the air pumps is connected to an air cooler or heat exchanger coil unit, filter system and hose reel assembly. The heat exchanger coil unit cools the compressed air with the filter systems positioned downstream thereof being utilized to remove any excess condensation from the cooled air.

Abstract: A HEPA-type filter including a cannister body with an inlet and outlet coupled through a filter unit having at least one prefilter and a HEPA-type filter therein. The prefilter protects the HEPA-type filter from moisture and clogging. The module can include a fume hood to prevent hazardous material from escaping when a cannister liner or bag is replaced. The module can form part of the vacuum system for a hazardous waste removal system and is coupled to a conventional separate vacuum source for operation thereof.

Abstract: A water entrapment device is provided, the device comprising a housing having an opening at the front and back, and an entrapment portion disposed within the housing. The entrapment portion comprises at least one screen covering the front opening, at least one entrapment member behind the screen, and an absorbent member behind the entrapment member. The device further comprises a water collecting surface and a drain.

Abstract: An impingement separator for removing entrained liquids and solids from fluid streams is configured to produce radially inward or outward flow of the fluid within its housing. An array of static impingement members or vanes circumscribes the inlet or outlet port where the fluid flows radially. For inline applications, the preferred device has opposing inlet and outlet port; a central plate divides the housing into two portions connected by a peripheral plenum; and, there are arrays of vanes around both the inlet and outlet port attached to either side of the plate.

Abstract: The apparatus includes a large-capacity main blower for drawing in air from the face of coal being mined. The main blower draws the air sequentially through a grid which deflects large pieces of coal into a refuse bin, and a main stage of centrifugal filters which separates dust and particles into a stream of dirty air while discharging the clean air back into the mine. The dirty air is routed through a secondary stage of centrifugal filters which is energized by a second blower or pressure unit, the output of which is then routed through a cloth filter stage. Only clean air is discharged into the atmosphere. An air balancing device maintains proper operating pressures in the secondary filter stage for more efficient processing of the dirty air discharge. An adjustable balancing plate maintains proper operating pressure at the collection outlets for the main and secondary filter stages.

Abstract: Oil separation for a horizontal refrigeration screw compressor is achieved in a series of steps which achieves nearly oil-free refrigerant gas. The refrigerant is discharged from the compressor into a generally cylindrical shell which is divided into three chambers. A generally horizontal, but slightly tilted, divider plate unequally divides the cylindrical shell into two chambers for the greater portion of the cylindrical shell. A cylindrical chamber at the end of the cylindrical shell provides fluid communication between the other two chambers. The compressor discharge is located in the lower and larger chamber which is a segment of a circle portion which also contains the oil sump. A discharge deflector turns the compressor discharge flow at least 90.degree., but as much as 135.degree., and causes it to impact upon the lower surface of the divider plate and depositing oil thereon. The flow striking the divider plate is deflected 180.degree. and is caused to turn approximately 90.degree.

Abstract: Disclosed is a rotary broom hopper which includes a container having a bottom wall, a front wall, a rear wall, and a top wall. A dust and debris inlet is positioned between the bottom wall and the rear wall and a filter element is positioned between the rear wall and the top wall. A first interior wall extends into the container from the rear wall between the inlet and the filter element. A second interior wall is positioned between the first interior wall and the filter element such that the first and second interior walls form a secondary material separation chamber interior of the container. An impingement plate is positioned to extend perpendicular to the top wall into the secondary material separation chamber. The impingement panel causes an abrupt reversal of direction of air flow and deposits a substantial quantity of particulate matter in the secondary material separation chamber and thereby reduces the accumulation of such material on the filter element.

Abstract: An in-line after-air filter is disclosed for optimal filtration of a maximum volume of air flowing to the engine. A multiple filter system comprising discrete abutting reticulated foam filter elements of different porosity impregnated with a petroleum-based agent trap air contaminants as the air flows from the primary filter to the engine manifold. An air expansion coupling, flared air inlet port and an air diffuser allow maximum air flow through the filter elements. A retainer plate having numerous six-sided openings allows a maximum volume of air to flow through the outlet port and the air funneler coupling to the engine manifold.

Abstract: A particulate filter for exhaust gases is disclosed which includes two filter members of suitable porous, heat-resistant material, longitudinally spaced to provide a dead space between the two filter members. The filter members are disposed within a housing in spaced relationship to the outer wall of the housing to provide an annular passage between the filter members and the outer wall of the housing for flow of exhaust gases therethrough. Provision is made for delivering exhaust gases to the dead space and then causing the exhaust gases to flow from the dead space through two paths to the outlet of the particulate filter. One of these paths provides for flow directly through one of the filter members to the outlet. The other path provides for flow of exhaust gases through the other of the filter members to the annular space and then along the annular passage external of the filter members to the outlet.

Abstract: A fluid separator for separating a liquid, such as an oil mist from a gaseous fluid, such as compressed air, the oil mist having been introduced into the compressed air in a compressor. The separator comprises a coarse separation section provided with an inlet directing the oncoming stream of gaseous fluid upon a surface causing coalescence and condensation of the mist of the liquid upon impact, in the form of droplets flowing by gravity to a sump. The stream of gaseous fluid is caused to flow away from the coarse separation section into a fine purification section in which the stream is passed through a fine filter cartridge, causing final condensation of the liquid and separation from the gaseous fluid. A fluid distributor is located at the inlet of the fine purification section and causes further condensation of the liquid by impact of the stream upon the wall of the fluid distributor.

Abstract: This apparatus comprises a housing having a chamber lined with heat-resistant material in which exhaust gases, from an internal combustion engine, are reburned. The apparatus also contains refractory screens to more efficiently break up the gases, before they enter a sump portion into which solid impurities fall from the said gas. Further filtering of the gases occurs as they pass through screens and a filter means before the said gases are released from the housing into the atmosphere.

Abstract: A heat recovery device is adapted for placement in the heat exhaust vent pipe of a conventional clothes dryer. The device includes a scrubber for primary removal of lint from the dryer exhaust and a final filter means for removing small particles of lint remaining prior to allowing the warm, humid dryer exhaust air to pass into the atmosphere of the interior environment of a home. The scrubber includes a series of ducts opening into an enlarged plenum and a baffle plate in the plenum to inhibit streamlined flow of air allowing the lint to settle to the bottom of the plenum, and the final filter includes a series of expanded aluminum screens or mesh for positively prohibiting passage of lint into the atmosphere. A clean-out tray is provided at the bottom of the plenum to facilitate removal of lint from the plenum for disposal.

Abstract: A filter assembly for use especially with air conditioning and heating ducts, comprising first and second rectangular frames, the latter frame being detachably positioned in the first one, and a filter element sandwiched between the rear end of the second frame and a flange seat on the first frame. Interiorly separable snap lock elements on the first and second frames serve to retain the latter frame and filter element in position in the first frame. The second frame is formed into a louver or grill and includes a plurality of horizontally-spaced and inclined slats, the spacing being so as to permit ample flow of air through the assembly, the slats serving as a handle for the insertion and withdrawal of the second frame relative to the first one.

Abstract: An industrial vacuum cleaner is disclosed. The vacuum cleaner comprises a housing having an inlet port, means for creating a vacuum in the housing to suck dust into the housing, means located in the housing adjacent such inlet port for separating any liquid or snow which may be drawn up with the dust, and a filter, also located in the housing, for collecting the dust.

Abstract: A pollutant separator having a cooling coil and a filter includes a scrubber device. The scrubber has a tube with holes in the walls thereof for the passage of fluid to and from a closed collection chamber. A series of spring biased balls within the tube serve as scrubber elements. Extending around part of the outside of the tube is a slidable spring-biased ring valve having a shoulder on which fluid pressure is exerted through a passage extending from inside the tube. The ring valve slides over some of the tube holes causing fluctuations in pressure within the scrubber unit to enhance vibratory, scrubbing motion of the balls contained therein.BACKGROUND OF THE INVENTIONThis is a continuation-in-part of my copending application, Ser. No. 764,707, filed Feb. 1, 1977 now abandoned, which is in turn a continuation of my abandoned application, Ser. No. 566,608, filed Apr. 8, 1975, which was a continuation-in-part of my application Ser. No.

Abstract: A three-stage dust collector incorporating a side outlet cyclone separator as the second dust collection stage. The side outlet separator includes an inlet end, an outlet end and a continuous side wall therebetween. A plurality of side outlet apertures are provided in the side wall and the separator has a plurality of axial passageways between its inlet and outlet ends. A vortex generating device is affixed within each axial passageway proximate the inlet end thereof and a device is provided for channeling clean air from within each axial passageway through a side outlet aperture. The vortex generated in the flow of dust-laden air entering the axial passageway discharges dust through the outlet end of the separator while cleaned air is channeled through the channeling device to a third stage separator.

Abstract: To increase the degree of separation of liquid droplets from a stream of gas by means of a separator consisting of a packet of wire gauze arranged in a pipe, the packet is subdivided along its height by discharge channels arranged transverse to the direction of flow.

Abstract: Air contaminated with combustible dust particles is removed and subjected to a high density air scrubber which safely removes the fine combustible dust particles from the contaminated air. The resulting water saturated, cleansed air is mixed with a continuously regulated amount of drier outside air until a desired absolute humidity is achieved, the regulation being responsive to the relative humidity changes within a work area in which the humidity is to be controlled. The air mixture is then conveyed into the work area which imparts a known temperature rise thereto. The temperature rise lowers the relative humidity of the air mixture to the desired level.