Abstract: An air filter for heavy dust conditions has an efficient scavenging system. The air filter includes: a housing, a permeable filter, and a scavenger system. The scavenger system disposes of particles collected on the upstream surface of the permeable filter. The scavenger system includes: an air suction source, and a shutter. The shutter is positioned substantially along, typically below, the permeable filter, at a certain distance from a wall, typically the bottom wall, of the housing. The air suction source draws air from a collecting space located between the shutter and the wall of the housing. The shutter is being selectively operated to permit or restrict passage there-through. The air suction source efficiently operates to scavenge particles from the collecting space when the passage through the shutter is at least partially restricted.

Abstract: To provide an exterior body to attach to an engine body, where the exterior body is not limited to where it may be installed, is safe and has excellent dust proofing capability. An engine exterior body (2) is provided with a frame body (20) configured to attach to an engine body (1); a shaft part (21) projecting from the surface of the frame body (20); and a rotator body (22) including a hole part (22a) loosely fitted and retained on the shaft part (21). The rotator body (22) rotates about the shaft part (21) by way of the vibrations transmitted to the shaft part (21) when engine body operates without receiving power from the engine body (1).

Abstract: A pre-cleaner for use with an internal combustion engine includes a base having a substantially planar interior surface, a scavenge port, and a plurality of separators extending substantially perpendicularly from the interior surface. The pre-cleaner also includes a baffle removably connected to the base, the baffle having a plurality of separator features configured to mate with the plurality of separators. The pre-cleaner further includes a deck disposed between the interior surface and the baffle. The deck is positioned at an acute angle relative to the interior surface such that a first portion of the deck is disposed closer to the interior surface than a second portion of the deck.

Abstract: An emissions cleaning module includes a first conduit including an inlet and an outlet and containing a particulate filter; a second conduit including an inlet and an outlet; and an end coupling fluidly connecting the outlet of the first conduit to the inlet of the second conduit. The end coupling is provided with a cleaning port including a cover which closes an aperture in the end coupling. Providing the cleaning port in the end coupling fluidly connecting the outlet of the first conduit to the inlet of the second allows for improved access and cleaning of the emissions cleaning module.

Abstract: A filter that filters carbon dioxide in the gaseous, liquid or supercritical state is efficiently purified. The carbon dioxide is used to at least clean or dry an object to be treated, or to clean or dry the object to be treated. A method of purifying a filter for filtering carbon dioxide in a gaseous, liquid or supercritical state is provided. The carbon dioxide is used to at least clean or dry the object to be treated, or to clean and dry the object to be treated. According to the method, the filter 13 is purified before the carbon dioxide is filtered in the gaseous, liquid or supercritical state by the filter 13. The filter 13 is purified by allowing carbon dioxide to pass through the filter.

Abstract: The invention is directed to a vessel for separating solid particles from a gas containing solid particles, said vessel comprising a plate provided with openings across the vessel such that the plate divides the vessel in a first and second space, a number of filter elements extending from the openings into the first space, a vessel opening for receiving the gas containing solid particles, fluidly connected to the first space, an vessel outlet opening for discharge of solids, fluidly connected to the first space and a vessel outlet opening for gas, fluidly connected to the second space. The first space further comprises one or more cyclone separation devices having an inlet fluidly connected to the vessel opening for receiving the gas containing solid particles, a cyclone gas outlet fluidly connected to the first space and a solids cyclone outlet.

Abstract: A dust collector having a filter for catching dust in air flowing in an intake path is provided. A pair of the intake paths are formed so as to be combined together on an upstream side of an electric blower provided in a main body. A pair of communication paths allow a discharge passage to communicate with each of the intake paths. A first opening and closing member is provided so as to open and close the intake path, and in a normal state, is biased to open the intake path. A second opening and closing member is provided so as to open and close the communication path, and in the normal state, is biased to close the communication path, and opens the communication path in response to a closing operation of the intake path by the first opening and closing member.

Abstract: A dust collecting apparatus having a dust removing unit. The dust collecting apparatus includes a first cyclone unit which rotates air introduced from outside to separate dust from the air; a second cyclone unit including a second centrifugal separation chamber into which dust discharged from the first cyclone unit is introduced, and second cyclone discharge pipe for passage of air discharged from the second centrifugal separation chamber; a filter assembly including a filter member arranged in the upper portion of the second cyclone unit to separate fine dust from air discharged from the second cyclone unit; and a dust removing unit which separates dust from the filter member, wherein the dust separated from the filter member passes through the second cyclone discharge pipe and is collected in the second centrifugal separation chamber.

Abstract: A modular design for large pulse jet fabric filters (PJFF) is divided into similar compartments, which are each “shop-fabricated” in quarter sections prior to delivery to the power plant site. The quarter sections of the compartments are modular and sized so that they can be fabricated at a shop located away from the power plant site and transported by truck over public roads to the power plant site. Once delivered to the site, the quarter sections are bolted together and seal welded to form a PJFF compartment, without requiring additional internal fabrication or welding. The assembled compartment is then lifted onto the support structure as an assembled unit and bolted and/or welded in place. The additional components of the PJFF may also be shop-fabricated offsite to further the benefits of the modular design.

Abstract: A filtration system for removing a particulate material includes a housing having an air stream flow path communicating between an inlet for incoming polluted air containing particulate material and an air outlet for emitting clean air filtered by removing the particulate material; a filter media collection system provided in the air stream to collect the particulate material, the collection system including at least one spool of filter media; and a filter media cleaning system provided to clean the collected particulate material from the filter media.

Abstract: There is provided a method of filtration for a rail vehicle or other off-highway powered system. The method includes determining a filter load of a primary filtration system to an air intake of an engine. The method also includes determining that the filter load exceeds a specified threshold. Additionally, the method includes de-activating the primary filtration system. The method further includes activating a secondary filtration system to the engine.

Abstract: Dust collectors having one or more dirty air channels and a clean air plenum having upper and lower clean air chambers are described herein along with related methods.

Abstract: An agricultural work vehicle includes an enclosed engine compartment within the vehicle body, with the engine compartment having a top cover that extends generally between opposite sides of the vehicle body. A vertically oriented air inlet is defined in the vehicle body for intake of air into the engine compartment. An intake housing is configured over the air inlet and includes an inlet opening and an outlet opening in communication with the engine compartment air inlet. The inlet opening extends above the top cover and is oriented relative to a vertical plane such that an angled air flow path is defined between the inlet opening and the outlet opening wherein air is drawn from an area above the top cover of the engine compartment and is directed into the air inlet.

Abstract: Air filtering assemblies described herein include one or more venturi elements that include extended pulse outlets. The pulse outlets may, in one or more embodiments, include two regions between the throat of the venturi element and the distal end of the pulse outlet that diverge at different rates. In one or more embodiments, the venturi elements may include openings at the distal ends of their pulse outlets that have non-circular cross-sectional shapes. In one or more embodiments, the non-circular cross-sectional shapes of the openings at the distal ends of the pulse outlets of the venturi elements may be selected to match non-circular openings in the filter elements attached to the pulse outlets of the venturi elements.

Abstract: In accordance with one embodiment, a filter assembly includes a housing having an inlet for particulate laden gas and an outlet for clean gas. The assembly also has at least one filter being capable of filtering particulate from the gas that is located in the gas flow between the inlet and outlet. The filter assembly further includes a cleaning mechanism for removing particulate from the filter and the filter assembly.

Abstract: A computer system includes a computer chassis housing a processor and having a dust filter disposed in an airflow pathway through the computer chassis. A plurality of electrodes is disposed across an area of the dust filter, and a voltage source is provided having a negative terminal and a positive terminal. A controller selectively couples a first subset of electrodes to the negative terminal and selectively couples a second subset of electrodes to the positive terminal, wherein a voltage differential between the first subset of electrodes and the second subset of electrodes is sufficient to cause electrostatic movement of dust from an area of the dust filter near the first subset of electrodes to an area of the dust filter near the second subset of electrodes.

Abstract: A headgear assembly for a baghouse filter can include a headgear configured to allow for concentric arrangement of first and second filters coupled thereto, where at least one of the first filter, second filter, and headgear can include an opening through which accumulated particulate from the second filter can pass. The headgear assembly can also include a cleaning assembly configured to facilitate cleaning of at least one of the first and second filters. Methods of facilitating on-line cleaning of a baghouse filter are also described wherein an exhaust stream is passed through concentrically arranged first and second filters to produce a filtered stream. At least one of the first and second filters can be cleaned using a cleaning assembly to remove accumulated particulate, which can pass through an opening in at least one of the first filter, the second filter, and the headgear.

Abstract: Disclosed herein is a filter apparatus comprising a fluid inlet for a fluid to be filtered in the apparatus; a first fluid outlet for fluid that has been filtered; and one or more barrier filters arranged between the fluid inlet and the first fluid outlet for filtering material from the fluid. In use, the fluid to be filtered is directed from the fluid inlet so as to promote a continuous erosion of material built up on the barrier filter(s). Also disclosed is a method of filtering particles from a particle laden fluid.

Abstract: An exhaust gas filter for a vehicle having a heat engine that includes, inside a filter body, at least one soot-filtering pleated medium, and a mechanism for unsealing the medium.

Abstract: A dust collecting apparatus having a dust removing unit. The dust collecting apparatus includes a first cyclone unit which rotates air introduced from outside to separate dust from the air; a second cyclone unit including a second centrifugal separation chamber into which dust discharged from the first cyclone unit is introduced, and second cyclone discharge pipe for passage of air discharged from the second centrifugal separation chamber; a filter assembly including a filter member arranged in the upper portion of the second cyclone unit to separate fine dust from air discharged from the second cyclone unit; and a dust removing unit which separates dust from the filter member, wherein the dust separated from the filter member passes through the second cyclone discharge pipe and is collected in the second centrifugal separation chamber.

Abstract: Methods, techniques, and constructions are provided for use to apply an evacuation valve arrangement on an air cleaner assembly that is configured for pulse jet operation. An example evacuation valve arrangement is provided which comprises a valve member in the form of a sleeve that extends completely around a sidewall portion of an air cleaner housing of a pulse jet air cleaner. Examples are depicted in which the sidewall portion can comprise: a portion of a housing sidewall section that surrounds an installed filter cartridge, in use; a portion of an access cover; or, a drop tube secured to a portion of the housing, for example either on an access cover or on another portion of a housing. Specific features and alternatives are described. Also, methods of assembly and operation are described.

Abstract: The present disclosure relates to a pulse cleaner for cleaning a diesel exhaust aftertreatment device. The pulse cleaner includes a cabinet, a diesel exhaust aftertreatment device mount positioned within the cabinet for mounting the diesel exhaust aftertreatment device during pulse cleaning, and a collection filter positioned within the cabinet for collecting material displaced from the diesel exhaust aftertreatment device during cleaning. The pulse cleaner can be equipped with features such as an exhaust aftertreatment device core temperature sensor, an air flow concentrator or an air swirling vane. The pulse cleaner can also include adapters for providing system compatibility with different styles of exhaust aftertreatment devices.

Abstract: In order to provide a device for separating wet paint overspray from a stream of crude gas containing overspray particles which includes at least two filter devices each of which has an inlet opening through which a partial stream of crude gas enters the respective filter device and each of which includes at least one filter element for separating the overspray from the partial stream of crude gas, which allows one to maintain the fluidity of the mixture including of filter aid material and wet paint overspray that has been cleansed from the filter elements in the filter aid material reservoirs in a simple and efficient manner, it is proposed that the device should comprise at least one reservoir for receiving material which has been cleansed from the filter elements of a plurality of filter devices and a mixing device for mechanically blending the cleansed material from a plurality of filter devices.

Abstract: Disclosed herein is a ceiling embedded type air conditioner having a filter cleaning device to clean a filter. The filter cleaning device includes a cleaning unit to remove dust from the filter and a dust storage unit to store the dust removed by the cleaning unit. The filter may automatically and periodically be cleaned by the cleaning unit and the removed dust may be stored in the dust storage unit, which eliminates a need to separate and clean the filter.

Abstract: A dust collector includes a centrifugal separator, a discharge unit having a filtered dust collecting space provided with a discharge unit discharge hole at a discharging side of the centrifugal separator and an intake passage communicating with a bottom of the discharge unit discharge hole, a filter unit provided with a filter member and mounted at the discharge unit discharge hole, and a sealing member including a dust removing device mounted on the filter unit and a dust container formed on a bottom surface of the centrifugal separator, wherein the sealing member opens the filtered dust collecting space and the intake passage by means of the weight thereof and closes the filtered dust collecting space and the intake passage by means of negative pressure.

Abstract: The present disclosure provides a method and apparatus for removing debris from an air cleaner of an internal combustion engine. The method includes receiving a flow of air from a source of air flow associated with an internal combustion engine at a first end portion of a conduit and passing the flow of air towards a second end portion of the conduit. The method also includes passing the flow of air into a scavenging conduit of the air cleaner towards an exhaust end of the scavenging conduit and creating a suction pressure at an end of the scavenging conduit connected to the air cleaner. The suction pressure results in a drawing in of the debris from the air cleaner.

Abstract: An apparatus and a method for filtering sectioning wastes of a microtome that are present in an air stream are described. The apparatus has an aspiration device with which sectioning waste can be aspirated from a blade region of the microtome with an air stream. A main filter and a prefilter are provided. A valve is provided for opening and closing an opening so that the air stream so that if desired an air stream can be directed through a filter insert in the prefilter for emptying the prefilter into the main filter. According to the method, an air stream that is used for aspirating sectioning waste from a blade region of the microtome is shut off immediately before emptying the prefilter.

Abstract: A cyclonic chamber for use in air filtration devices. The chamber includes an apex opposite a base with sidewalls extending therebetween. The cyclonic chamber is preferably parabolic in cross-section or tubular with a hemi-spherical cap. The base contains an outflow passage and a conical filter extending therefrom. An inflow passage is provided proximate the apex. The inflow and outflow passages are parallel but not aligned. The chamber interior is smooth. The smooth interior and offset relationship of the inflow and outflow passages causes air to take a cyclonic path between the inflow passage and the filter. Debris in the airstream is pushed outward—away from the filter—by centripetal force. Eddies form proximate the base. Debris escapes the airstream there, where it either remains or, depending upon the chamber's orientation relative to gravity, falls back into the airflow where it is again directed away from the filter.

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

Abstract: An apparatus and a method for filtering sectioning wastes of a microtome that are present in an air stream are described. The apparatus has an aspiration device with which sectioning waste can be aspirated from a blade region of the microtome with an air stream. A main filter and a prefilter are provided. The direction of the air stream can be reversed and a filter insert in the prefilter can be rotated for emptying the prefilter into the main filter. According to the method, the prefilter is only emptied to the main filter after all the sections of a block that are to be produced with the microtome have been produced.

Abstract: A cleaner, which automatically cleans an air filter, is coupled to an outer (upstream) side of a partition including an intake port. The air filter is coupled to the intake port through which air is drawn. The partition includes an opening used to electrically connect the cleaner to an inner (downstream) side. A substrate is coupled to the opening 42. A connector connected to the cleaner and a connector connected to an electrical system in a main body are arranged on the substrate. The two connectors are connected by a through hole at a peripheral section of the substrate.

Abstract: The present disclosure refers to a method for regenerating a filter adapted to remove particulate material from a gas. The disclosed method comprises at least producing at least one electric arc discharge pulse, the at least one electric arc discharge pulse being adapted to generate at least one pressure wave so that the particulate material is being dislodged from the filter. In addition, the disclosure refers to a filter regenerating arrangement and a diesel particulate filter.

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

Abstract: An apparatus and a method for filtering sectioning wastes of a microtome that are present in an air stream is suggested. The apparatus encompasses an aspiration device. With the aspiration device, sectioning waste can be aspirated from a blade region of the microtome with an air stream. The aspiration device comprises a main filter in which the sectioning wastes can be filtered from the air. In order to allow inadvertently aspirated histological sections to be retrieved again without mix-up, the apparatus according to the present invention has an aspiration device comprising a prefilter that is arranged between the blade region and the main filter and prefilters the sectioning wastes. The present invention further relates to a microtome.

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

Abstract: Methods, techniques, and constructions are provided for use to apply an evacuation valve arrangement on an air cleaner assembly that is configured for pulse jet operation. An example evacuation valve arrangement is provided which comprises a valve member in the form of a sleeve that extends completely around a sidewall portion of an air cleaner housing of a pulse jet air cleaner. Examples are depicted in which the sidewall portion can comprise: a portion of a housing sidewall section that surrounds an installed filter cartridge, in use; a portion of an access cover; or, a drop tube secured to a portion of the housing, for example either on an access cover or on another portion of a housing. Specific features and alternatives are described. Also, methods of assembly and operation are described.

Abstract: This invention relates to a vacuum cleaner comprising a body with a vacuum source. The vacuum cleaner is provided with at least two filter chambers, a first filter chamber for a first filter means in a surface cleaning mode and a second chamber for the same or a second filter means in a filter cleaning mode.

Abstract: Methods, techniques, and constructions are provided for use to apply an evacuation valve arrangement on an air cleaner assembly that is configured for pulse jet operation. An example evacuation valve arrangement is provided which comprises a valve member in the form of a sleeve that extends completely around a sidewall portion of an air cleaner housing of a pulse jet air cleaner. Examples are depicted in which the sidewall portion can comprise: a portion of a housing sidewall section that surrounds an installed filter cartridge, in use; a portion of an access cover; or, a drop tube secured to a portion of the housing, for example either on an access cover or on another portion of a housing. Specific features and alternatives are described. Also, methods of assembly and operation are described.

Abstract: A pulse cleaning system for one or more hollow filter elements having an inlet and an outlet includes an air supply manifold adapted to extend across the outlet of the filter element, a conduit extending substantially perpendicular to the manifold and adapted to extend into the filter element, the conduit formed or provided with a plurality of air-emitter holes along its length dimension, and further provided with a pulse air nozzle fitted onto a remote tip of the conduit.

Abstract: An air filter arrangement for an agricultural combine located on a panel at a side wall of the agricultural combine. The air filter arrangement includes a rotary filter mounted for rotation at a first aperture, a scoop enclosing the rotary filter and blocking substantially all air flow to the rotary filter except at a scoop inlet disposed along an upper edge of the scoop above the rotary filter, and at least one stationary filter disposed to filter air passing through a second aperture in the panel, the stationary filter being located between an upper portion of the rotary filter and the scoop inlet.

Abstract: A dust collecting apparatus for a vacuum cleaner is provided. The dust collecting apparatus includes a centrifugal separating portion, a dust receptacle to collect dust which is separated by the centrifugal separating portion and a filter portion having a filter unit separating dust from an air current discharged from the centrifugal separating portion. The filtering portion further includes a dust removing unit to detach the filter dust caught in the filter unit, and a dust discharge member to move the filter dust to an upstream of the centrifugal separating portion.

Abstract: There is provided a modularized hybrid dust collector for treating dust generated in various industrial processes. The box-shaped hybrid dust collector includes a first box-shaped dust collecting unit or a first cylindrical dust collecting unit, to which the inertial impaction and the principle of collecting dust using the centrifugal force are applied, and a second box-shaped dust collecting unit implemented by a dust collecting filter such that a problem of employing a cleaner and a limit of capacity, of a conventional cylindrical dust collector, can be overcome, and a high capacity modularized hybrid dust collector in which the box-shaped hybrid dust collector as a basic module and a plurality of dust collector modules are combined.

Abstract: A diesel particulate filter of a motor vehicle is cleaned of diesel particulate material like ash and possibly soot, typically using equipment already available in a service shop following the method and diesel particulate filter cleaning apparatus of the invention. The diesel particulate filter cleaning apparatus has an air chamber that is coupled to a vibrator and is attached to the diesel particulate filter. The vibrator vibrates the air chamber and the diesel particulate filter to dislodge the diesel particulate material. Air is introduced into the air chamber and into the diesel particulate filter to further remove the diesel particulate material from the diesel particulate filter.

Abstract: Disclosed herein is a filter apparatus comprising a fluid inlet for a fluid to be filtered in the apparatus; a first fluid outlet for fluid that has been filtered; and one or more barrier filters arranged between the fluid inlet and the first fluid outlet for filtering material from the fluid. In use, the fluid to be filtered is directed from the fluid inlet so as to promote a continuous erosion of material built up on the barrier filter(s). Also disclosed is a method of filtering particles from a particle laden fluid.

Abstract: A cone (36) and a ring (38) are accessories separately used during respective phases of cleaning a diesel particulate filter (10, 10?) in a cleaning machine that uses compressed air pulses to clean the substrate (12) where particulate matter in engine exhaust has been trapped. In one phase the ring covers the outer perimeter margin of one end face of the substrate, and in the other phase the cone covers a central inner zone of the end face.

Abstract: A working vehicle, such as an agricultural combine, includes a vehicle body and an internal combustion engine carried by the vehicle body. The internal combustion engine includes a heat exchanger. An air scoop has an inlet positioned near a top of the vehicle body and facing in an upward direction, and an outlet positioned in association with the heat exchanger.

Abstract: A self cleaning gas filtration system for filtering contaminants from a flow of gas. A filter element is disposed within a housing and configured to receive a first flow of gas from an inlet in the housing. A pressurized gas source is fluidly coupled to at least one tube having a plurality of perforations. The perforations are configured to backflush the filter with a second flow of gas from the gas source. An outlet is configured to receive at least a portion of the second flow of gas.

Abstract: The present disclosure relates to a pulse cleaner for cleaning a diesel exhaust treatment device. The pulse cleaner includes a cabinet, a diesel exhaust treatment device mount positioned within the cabinet for mounting the diesel exhaust treatment device during pulse cleaning, and a collection filter positioned within the cabinet for collecting material displaced from the diesel exhaust treatment device during cleaning. The pulse cleaner also includes a pulse generator for generating pulses that are each directed at a majority of a face of the diesel exhaust treatment device when the diesel exhaust treatment device is mounted at the diesel exhaust treatment device mount. The pulse generator includes a pressure tank for accumulating pressurized air, and a valve arrangement that flushes the pressurized air from the tank. A pulse of air for cleaning the diesel exhaust treatment device is generated each time the tank is flushed.

Abstract: An autonomously-cleaned conditioning system conducts a routine purge cycle to clear accumulated particulates from a filter, concentrator, or both. The purge cycle is conducted by reversing air flow through the filter and/or concentrator. Air flow is reversed on a periodic basis or on the occurrence of a condition, such as a reduction in air flow exiting the concentrator.

Abstract: A dust collector is disposed between an intake port and an exhaust port in a vacuum cleaner. Air flows from the intake port into the exhaust port along an airflow path in the dust collector. The dust collector includes a dust-collecting net disposed in the path, and a dust-brushing unit. When air flows from the intake port into the exhaust port, a plurality of dust brushes of the dust-brushing unit rotate to brush the net so as to remove dust from the net. Therefore, air can flow unimpeded through the net.