Abstract: An industrial air filtration system and associated filter element are provided. The system includes a filter cage which supports its associated filter element or elements. The filter element or elements seal directly against upper and lower plates of the filter cage. Further, the system includes a liquid collection region and a sump region in fluid communication with the liquid collection region. The aforementioned regions are arranged to drain away liquid which coalesces within the system during operation.

Abstract: An industrial air filtration system and associated filter element are provided. The system includes a filter cage which supports its associated filter element or elements. The filter element or elements seal directly against upper and lower plates of the filter cage. Further, the system includes a liquid collection region and a sump region in fluid communication with the liquid collection region. The aforementioned regions are arranged to drain away liquid which coalesces within the system during operation.

Abstract: A droplet coalescing filter cartridge is provided. The filter cartridge includes an outer filter tube and an inner filter tube disposed within the outer filter tube, and is configured to provide parallel filtration of a fluid flow. The filter includes a depth media configured to coalesce fine droplets or aerosols from an air flow. The filter cartridge is suitable for use in a coalescing filter assembly including the filter cartridge and a secondary filter element.

Abstract: A filter cleaning system for cleaning a filter element is provided. The filter cleaning system includes a set of pulse nozzles and a compressed air supply, which rotate together during a cleaning cycle to release pulse blasts at predetermined time intervals to clean the filter element.

Abstract: A filter cleaning system for cleaning a filter element is provided. The filter cleaning system includes a set of pulse nozzles and a compressed air supply, which rotate together during a cleaning cycle to release pulse blasts at predetermined time intervals to clean the filter element.

Abstract: A filter cleaning system for cleaning a filter element is provided. The filter cleaning system includes a set of pulse nozzles and a compressed air supply, which rotate together during a cleaning cycle to release pulse blasts at predetermined time intervals to clean the filter element.

Abstract: A filter element including an end cap is provided. The end cap includes an annular seal support carrying an annular seal member and a mounting arrangement to seal and support the filter element in a filter housing. The end cap is configure to engage with a mating engagement structure of the housing to provide self alignment feature of the filter element.

Abstract: A portable dust collection air cleaner assembly is provided. A access hatch is hinged to a dust collection bin to provide ready access to the filter element. The filter element may include an outer annular flange carrying a gasket that rests upon, engagement and seals against a top panel of the dust collection bin.

Abstract: A filter cleaning system for cleaning a filter element is provided. The filter cleaning system includes a set of pulse nozzles and a compressed air supply, which rotate together during a cleaning cycle to release pulse blasts at predetermined time intervals to clean the filter element.

Abstract: A portable dust collection air cleaner assembly is provided. A access hatch is hinged to a dust collection bin to provide ready access to the filter element. The filter element may include an outer annular flange carrying a gasket that rests upon, engagement and seals against a top panel of the dust collection bin.

Abstract: Shown is an apparatus and method for cleaning filter units of an air filtering system using a reverse flow pulse of pressurized air. The filter cleaning system includes a venturi element (36) with a narrowed throat portion (56). A blowpipe (46) is substantially axially aligned with the venturi (36) and has an outlet nozzle (50) that is flared in a substantially conical shape with an included angle that (64) that exceeds an angle at (62) at which high pressure air would ordinarily diverge from an unmodified blowpipe opening. The nozzle (50) is axially spaced from the venturi at a selected distance (70) such that a high velocity pulse of air delivered by the blowpipe (46) through the nozzle (50) is delivered to the outlet portion (58) of the venturi (36) substantially between the outlet opening (62) and the throat (56).

Abstract: An improved electrostatic precipitator system is provided for use in high-grease atmospheres in which the grease is electrically conductive. The precipitator includes high-voltage insulators that are both located in areas unlikely to accumulate electrically-conductive grease and that, in themselves, can operate in a high-voltage system without tracking, even when a certain amount of conductive grease has accumulated on the insulators' surfaces. In a multi-cell precipitator system, a high-voltage insulator is provided as part of a cell-to-cell assembly that receives high-voltage electricity on one side of its insulator, and conducts that electricity to its opposite side, and is placed in a specially-shaped cut-out in the bulkhead between the cell chambers, in which the cut-out is shaped so as to minimize the amount of grease that may accumulate upon the cell-to-cell assembly's insulators.

Abstract: An electrostatic air cleaner is disclosed for use in removing particulate matter from moving streams of air. A high voltage ionizer is used as a corona source to ionize the particulate matter as it approaches the air filter portion of the electrostatic air cleaner. The air filter uses reticulated polyether foam filter media for collecting the particulate matter, and the filter media is non-deliquescent, thus preventing the high-voltage electric field from being dissipated by imbedded water vapor, which is the cause of filter inefficiency in the prior art. In one embodiment, the air filter uses strips of conductive material raised to a very high DC voltage interleaved between strips of conductive material held to ground potential, and these strips are oriented so as to be parallel to the direction of the air flow through the air filter's foam filter media, thereby creating an electric field that is perpendicular to the direction of air flow.

Abstract: A uniform distribution nozzle for electrostatic dispensing of conductive fluids, wherein the nozzle includes a nozzle body having a base and an attached cap, and an inlet for receiving fluid at a relatively low pressure. A substantially elongated outlet opening is provided on the nozzle for enabling distribution of the fluid, and a conductive shim is preferably included for providing an electrical charge to the fluid to enable electrostatic distribution from the nozzle. In a preferred embodiment, a plurality of distribution channels are provided to define discrete pathways within the nozzle for distributing and directing the fluid from the inlet to predetermine dispensing points along the outlet opening. The pathways have substantially equal flow characteristics, so that fluid travels with substantially equivalent volume, speed and pressure between the inlet and the outlet opening, regardless of which particular pathway and dispensing point are involved.

Abstract: An electrostatic air cleaner is disclosed along with a method for removing particulate matter from moving streams of air. A high voltage ionizer is used as a corona source to ionize the particulate matter as it approaches the air filter portion of the electrostatic air cleaner. The air filter uses a pair of reticulated polyether foam filters for collecting the particulate matter. The foam filters are separated by a thin, grid-like layer of semiconductive material (carbon-impregnated polycarbonate) which is raised to a very high DC voltage. The foam filters are also surrounded by thin, grid-like layers of electrically conductive material which are held at ground potential, thus creating a high-voltage electric field through each of the foam filters. The polyether foam filter media is non-deliquescent, thus preventing the high-voltage electric field from being dissipated by such imbedded water vapor, which is the cause of filter inefficiency in the prior art.

Abstract: A nozzle assembly for electrostatically dispensing a flowable material at a controllable rate and in a reliable and uniform manner includes a housing with a dispensing edge and front and rear members joined together to provide a continuous dispensing slot along the dispensing edge. The nozzle is a unitary device having a plurality of substantially hydraulically independent chambers therewithin in fluid communication with the substantially continuous and uninterrupted dispensing slot, whereby flowable material can be selectively supplied to the individual chambers to control the width of material application without structurally modifying the nozzle itself. Field gates are provided at each end of the nozzle to further control the deposition of the charged material, and the nozzles can be oriented to dispense flowable material in substantially any orientation, including vertically upwardly.

Abstract: A conventional HEPA (high efficiency particulate air) filter is provided with a ionizer at its air inlet face to enhance its efficiency. The filter comprises a non-conductive fibrous filter medium sheet formed in a zig-zag or accordian fold. Within each fold of the filter medium is there located a conductive spacer so that the accordian folds are supported and substantially evenly spaced throughout the filter. By virtue of the accordian fold of the filter medium sheet, a series of spacers, forming a first set thereof, each has one of its longitudinal edges exposed at the air inlet face of the filter and the other of its longitudinal edges covered at the air discharge face of the filter. The remaining spacers constitute a second set thereof, each having one of its longitudinal edges exposed at the air discharge face of the filter and the other of its longitudinal edges covered at the air inlet face of the filter. The spacers of the first and second sets alternate, one adjacent the other.

Abstract: A closed loop oxygen reduced gas recirculation system for an industrial dryer includes high volume primary and low volume secondary gas recirculation paths with a condenser apparatus in the secondary path for removing water and solvent. A natural gas burner produces both oxygen reduced gas for the system and the required energy for the dryer. An optional condenser apparatus removes water vapor from the oxygen reduced gas output of the burner prior to its reaching the dryer. The condenser apparatus may include a first heat exchanger and a pair of parallel alternately operating downstream output heat exchangers, such as refrigeration coils. The first heat exchanger condenses most of the water vapor from the dryer gas and vaporized solvent is condensed in one of the output heat exchangers while the other is being defrosted.

Abstract: A gas condenser apparatus and method is described employing two heat exchanger stages for condensing water vapor and other contaminates, such as organic solvents, out of hot air or other treated gas by means of a cooling gas which is provided by feeding back the treated gas through the cooling passages of such heat exchanger stages after removal of the water and solvents. The heat exchangers are of the counterflow type so that the treated gas and the cooling gas flow in opposite directions therethrough. Preferably, water vapor is removed from the treated gas by condensing it in the first stage and the solvents are removed by condensing them in the second stage thereby separating the condensed water and solvents. Auxiliary cooling coils are provided at the input of the first stage and at the output of the second stage for further cooling of the treated gas.