Abstract: An apparatus for removing condensed water of an intercooler includes a collecting portion for collecting condensed water, the collecting portion being provided at a lower end of the intercooler; and an ultrasonic wave vibrator provided in the collecting portion, the ultrasonic wave vibrator being operated to introduce the condensed water collected in the collecting portion toward an engine so that the condensed water is vaporized, thereby removing or significantly reducing an amount of condensed water in the intercooler. The apparatus for removing condensed water of the intercooler can prevent engine damage and ignition failure due to the presence of the condensed water in the intercooler.

Abstract: A spray dust compression system and method includes a nozzle holder for affixing a spray nozzle to a percussive tool. The nozzle holder includes an arcuate wall having a first surface engageable with the percussive tool, and a second surface opposing the first surface. A protruding body protrudes radially outwardly from the second surface relative to a longitudinal axis of the arcuate wall and a concave recess is formed in the protruding body and receives the spray nozzle. The concave recess is angled inwardly toward the longitudinal axis of the arcuate wall.

Abstract: The systems and methods described herein may automatically sense varying environmental factors in an area of interest managed by a climate management system. The systems and methods described herein may adaptively control motors, inlets, outlets, other components of the climate control system, time delay(s), hours of operation, etc. to optimize the performance of the climate control system for the environmental factors. In some implementations, the systems and methods described herein may allow a user full control of climate management systems based on external sensors, building and/or other operational requirements for specific applications/contexts, etc. The systems and methods described herein may support one or more present sequences of operations used for various applications/contexts, and/or may allow users to customize various aspects of operation.

Abstract: An electrode is arranged on one wall surface of a flow path of an exhaust atmosphere in a solvent separating apparatus, an electric field is applied to vaporized solvent in the exhaust atmosphere so as to concentrate only the solvent in the exhaust atmosphere in the direction toward the electric field, and the solvent is discharged to the outside of the solvent separating apparatus together with a portion of the exhaust atmosphere in the periphery of the solvent.

Abstract: An air purifier includes a frame, a fan unit, and an electrostatic precipitator. The precipitator has a first strip with a first continuous conductive electrode layer directly adjacent to an edge, and a second strip with a second continuous conductive electrode layer directly adjacent to an edge. The first and second strips are nested with one another. The edge of the first strip is opposed to the edge of the second strip. An electrostatic precipitator for an air purifier includes a first spiral strip having a continuous conductive electrode, a second spiral strip having a continuous conductive electrode and nested with the first strip, a plurality of combs. Each comb extends from an outer periphery of the precipitator to an intermediate region between the outer periphery and a center of the precipitator.

Abstract: A particle collector for collecting biological material using electrostatic precipitator (ESP) technology including a removable ESP collection tube having an electrode wire suspended therein, a high voltage power supply coupled to the electrode wire for generating an ionization field within the collection tube causing smaller particles entering the collection tube to precipitate onto the walls of the collection tube, electronics including a microcontroller for controlling the operation of the collector, and a housing assembly for housing the collection tube, the high voltage power supply and the electronics.

Abstract: An electrically enhanced air filtration system is disclosed which uses rear fiber charging is disclosed. In particular, a fibrous filter may be placed in an upstream position within the system with one or more ionization arrays positioned downstream or to the rear of the fibrous filter in terms of airflow direction. The fibrous filter may include a grounded side and fiber side with the grounded side being upstream of the fiber side. The ionization array may include a plurality of electrodes each extending unidirectionally toward the fibrous filter.

Abstract: The present invention relates to the technical field of air filter products, and more particularly to an integrated electrostatic dust collection device for efficiently capturing particles in air and an electret processing technique thereof. The main body of the dust collection device is formed by stacking a plurality of layers of dust collection boards.

Abstract: The device has air ducts (21, 22) in which a fan/aspirator (4) is interposed, passive and mechanical air-filtration elements (2, 11, 13) being placed before the unit (3) formed. At the exit from said unit (3) there is an active filtration module that includes one or more non-thermal plasma conduits (6). When the ducts (22) closest to the module (7) bifurcate or branch inside said module (7), they define at least two clear air outlets (12), said unit (3), said module (7) and a filter (2) of said passive and mechanical filtration elements being connected to a control unit (5) by means of a communication (8) selected from mechanical, electrical, electronic and optoelectronic means and any combination thereof. The device can be used in land, water, air or space vehicles (10).

Abstract: A method and to a device for the electrostatic separation of fine dust particles from gases that flow through a housing (1) containing perforated plates (6) and electrodes (4, 5). An electric field is created between the electrode (4) on the inflow opening side and the electrode or electrodes (5) having positive polarity on the outflow side. The removal of negatively charged fine dust particles (9) is carried out by deposition on the inflow side of the perforated plates (6), and the removal of positively charged fine dust particles (11) is carried out on the outflow side. Fine dust particles without charge (10) are charged after the last perforated plate (6) in an ionisation chamber (8) and deposit on the outflow side of the last perforated plate (6).

Abstract: A processing system includes an air blower and an air manifold with a main body having an inlet coupled to the air blower and a plurality of outlet openings. Each of the outlet openings is coupled to a nozzle. An ionizer bar includes a housing, a power cable contained within the housing, and a plurality of emitter pins electrically coupled to the power cable. A cartridge includes two side plates forming a channel in which the ionizer bar is mounted. The cartridge is removably couplable to an interior of the main body of the air manifold.

Abstract: An improved HVAC system is provided for the delivery of a temperature controlled air supply via one or more air curtains provided at windows, doors and walls. The air curtains create a double layer of insulation over the surface of a window, door or wall. The invention provides for the use of the temperature controlled air flow from the air curtain to directly affect the interior room temperature. The invention provides an improved system for continuous cleaning the recycled air through the use of a wet electrostatic precipitator in the HVAC air flow, as well as providing a higher speed mode for the air curtain to prevent the inflow of particles and contaminants from outside of the building, when windows or doors are open. The invention may be installed on existing construction, or incorporated as part of new construction.

Abstract: Methods using vane electrostatic precipitators collect charged and uncharged particles with vane assemblies that are physically arranged to reduce the air flow rate to at or below 1.0 ft/sec (0.305 m/sec). In preferred embodiments, the main entrained air is divided into smaller proportions by using a plurality of vane assemblies in a vane electrostatic precipitator operating at a specific angle that have discharge electrodes in front of the vanes. This results in both the particles being charged and the flow rate of the air and articles being reduced as they traverse between vanes and over the vane surface. The vane width, operating angle, vane length and vane offset are designed to reduce the air flow rate. As a result, at the ends of the vanes, a high percentage of the air flow is less than 1 ft/s.

Abstract: A multi-sectional linear ionizing bar with at least four elements is disclosed. First, disclosed bars may include at least one ionization cell with at least one axis-defining linear ion emitter for establishing an ion cloud along the length thereof. Second, disclosed bars may include at least one reference electrode. Third, disclosed bars may include a manifold for receiving gas or air from a source and for delivering same past the linear emitter(s) such that substantially none of the gas/air flows into the ion cloud. Fourth, disclosed bars may include means for receiving the ionizing voltage and for delivering same to the linear emitter(s) to thereby establish the ion cloud. In this way, disclosed ionizing bars may transport ions from the plasma region toward a charge neutralization target without inducing substantial vibration of the linear emitter and without substantial contaminants from the gas/air flow reaching the linear emitter.

Abstract: A filtration system includes a frame directing a fluid flow through the filtration system. An ionization array is located in the frame and has an ionizer current flowing therethrough. The system further includes a media filter having a plurality of media fibers arranged to capture particles flowing therethrough and a conductive surface located at the media filter and having a filter current flowing therethrough. A comparator is utilized to determine a difference between the ionizer current and the filter current, and compare that difference to a predetermined range.

Abstract: Disclosed herein are an electric precipitator, which efficiently charges dust particles without lowering dust collecting efficiency, although a velocity of an air current is not uniform, and an air cleaner having the same. The electric precipitator includes a charger unit including at least two charge cells to charge dust particles contained in air, and a collector unit to collect the dust particles charged by the charger unit. The at least two charge cells include a first cell, through which the dust particles pass at a first velocity, and a second cell, through which the dust particles pass at a second velocity different from the first velocity.

Abstract: A filter support casing and filter provides powder into a Bernoulli flow system. The system has an upper end and a lower end, the upper end having an opening therein. The filter support casing extends downward from the upper end. There is a filter supported within the casing. The filter support casing and the filter define an internal volume within both the filter support casing and the filter. The volume is exposed to the opening in the upper end and as later explained is flow connected into a gas stream that will carry particles and spray particles. The casing has at least two concentric elements, a first inner elements and a second outer element, that rotate with respect to each other and which slide with respect to each other. The two elements rotate about their concentric positions and slide along their lengths. The first inner element is contiguous (adjacent and/or touch and adjacent) with the filter. The first inner element encloses the filter with arms (fingers, extensions, posts, etc.

Abstract: A gas separation device comprises a gas separation layer, a first gas volume and a second gas volume, the gas separation layer being arranged between the first gas volume and the second gas volume, the gas separation layer having at least one aperture connecting the first gas volume to the second gas volume. The aperture is configured to taper from the first gas volume to the second gas volume and being dimensioned to enrich a component of the second gas volume in the first gas volume, wherein the aperture is configured as an elongated opening in the gas separation layer, the aperture having a minimum opening width of essentially one time to twenty times the mean free path length of the component of the second gas volume, which is to be enriched.

Abstract: The present disclosure deals with a gas cleaning system (1) for cleaning process flue gas. The gas cleaning system (1) comprises a reactor inlet duct (13) having a longitudinal axis and a reactor duct (14) fluidly connected perpendicularly to the reactor inlet duct and positioned downstream from the reactor inlet duct. The reactor duct likewise has a longitudinal axis. Within the reactor duct is a gas cleaning device (20), such as a catalytic reactor, and a gas flow rectifier (30) for rectifying flue gas flow from the reactor inlet duct (13) into the reactor duct (14). The gas flow rectifier is arranged in the reactor duct upstream of the gas cleaning device (20), wherein the gas flow rectifier (30) comprises at least one expanded screen (30a).

Abstract: A nozzle for a fan assembly includes an air inlet, a plurality of air outlets, and an annular casing having an annular inner wall defining a bore through which air from outside the nozzle is drawn by air emitted from the air outlets and an outer wall extending about the inner wall. The annular casing includes an air passage for conveying air to the air outlets. The air passage has an inlet section located between the inner wall and the outer wall and extending about the bore of the nozzle, and a plurality of outlet sections each extending across the bore for conveying air to a respective air outlet. To achieve an even air pressure at each end of each of the outlet sections, the inlet section of the air passage is arranged to convey air to each end of each of the outlet sections.

Abstract: A particle separation system for separating particles in an airflow upstream of a detection chamber in an aspirating smoke detector is disclosed. The particle separation system includes an airflow path for directing the airflow from an inlet to an outlet. The airflow path includes a first airflow path section in a first direction and a second airflow path section in a second direction, the first and second directions being different relative to each other. The airflow path also includes at least one electrically charged surface such that the airflow undergoes electrostatic precipitation as it traverses the airflow path. A method of separating particles in an airflow upstream of a detection chamber in an aspirating smoke detector is also disclosed.

Abstract: A multi-sectional linear ionizing bar with at least four elements is disclosed. First, disclosed bars may include at least one ionization cell with at least one axis-defining linear ion emitter for establishing an ion cloud along the length thereof. Second, disclosed bars may include at least one reference electrode. Third, disclosed bars may include a manifold for receiving gas or air from a source and for delivering same past the linear emitter(s) such that substantially none of the gas/air flows into the ion cloud. Fourth, disclosed bars may include means for receiving the ionizing voltage and for delivering same to the linear emitter(s) to thereby establish the ion cloud. In this way, disclosed ionizing bars may transportions from the plasma region toward a charge neutralization target without inducing substantial vibration of the linear emitter and without substantial contaminants from the gas/air flow reaching the linear emitter.

Abstract: A dehumidification device and an electrified desorption device thereof are provided. The electrified desorption device includes a conductive water-absorbing material containing titanosilicates; a conductive layer containing a metal component or a mixture of the metal component and graphite, attached to end surfaces at two sides of the water-absorbing material; a pair of electrode structures, coupled to the two sides of the water-absorbing material respectively and each having multiple sub-electrodes insulated from each other; and a voltage source, coupled to the pair of electrode structures. The electrodes are coupled to the conductive water-absorbing material, and the conductive water-absorbing material is directly electrified with a current, so that the conductive water-absorbing material generates heat to achieve a desorption effect, and further maintains a re-adsorbing capability to continue operation.

Abstract: A method for removing particulate matter from a particulate-bearing gas stream includes flowing a particulate-bearing gas stream at a first volumetric flow rate to a plurality of ESP units; producing electrically charged particulate matter; collecting electrically charged particulate matter on collection electrode plates; reducing the flow through at least one of the ESP units; sequentially increasing the flow through one or more remaining ESP units in an amount so as to maintain the sum of flow through all of the ESP units at the first volumetric flow rate; subjecting the collection electrode plates in the at least one ESP unit with reduced flow to forces which dislodge the particulate matter from the collection electrode plates; collecting the dislodged particulate matter in a particulate collection receptacle; and withdrawing a gas stream of reduced particulate matter contamination.

Abstract: The invention relates to an electrostatic collection device (1) of particles in suspension in a gas environment by corona effect. The effect is created by a discharge electrode in the form of a wire (4) judiciously maintained at its two ends (40, 41), the maintaining means (7) downstream of the collecting chamber (2) extending inside at least one space delimited by a wall (9) transversal to the collecting wall (3) part of which (30) forms the collecting electrode, the transversal wall having a shape adapted to deflect the path of a liquid present in the gas and flowing on the collecting electrode and carried along up to said transversal wall such that it does not come into contact directly with the maintaining means (7).

Abstract: The present invention is an air purification method and device. Due to the lower airflow resistance that the present invention induces, an exhaust fan or blower with motor of lower torque is adopted. Consequently, the whole air purification is operated at a lower noise level. Lower operational voltage is applicable for the high-voltage electrostatic precipitator device and provides a similar or superior performance and effectiveness for dust removal. The air purification device/system is designed with higher flexibility and of more compact in dimension and size. Dust is removed from the environment by a high voltage electrostatic precipitator. The airflow stream within a high-voltage electrostatic precipitator is such that the direction of the path of the airflow is changed at least twice.

Abstract: An electrostatically atomizing kit for use in a vehicle has an atomizing unit in combination with a plurality of differently shaped deflector guides. The atomizing unit is supplied with water and electrostatically atomizing the water into charged minute water particles in the form of a mist to be carried on a conditioned air blowing into a passenger's room through a blow port. The deflector ducts are selectively detachable to the blow port, and are differently shaped to each other to deflect the conditioned air carrying the mist in different directions in order to effectively concentrate the mist carried air to a particular object or item in the passenger's room.

Abstract: Clean corona gas ionization by separating contaminant byproducts from corona generated ions includes establishing a non-ionized gas stream having a pressure and flowing in a downstream direction, establishing a plasma region of ions and contaminant byproducts in which the pressure is sufficiently lower than the pressure of the non-ionized gas stream to prevent at least a substantial portion of the byproducts from migrating into the non-ionized gas stream, and applying an electric field to the plasma region sufficient to induce at least a substantial portion of the ions to migrate into the non-ionized gas stream.

Abstract: A method for separating particles from particle-laden gas. Charged particles are formed by charging particles of a particle-laden gas. A gas jet is provided by guiding the particle-laden gas by a flow guide. Particles from the gas jet are collected to a collecting electrode by an electric field. An effective collecting area of the collecting electrode is positioned such that gas velocity gradient at each point of the effective collecting area is smaller than 10% of the maximum gas velocity in the gas jet divided by the height dimension of the jet.

Abstract: A method and apparatus for processing air is described herein. An example apparatus includes a housing, a high-velocity air flow guide, a filter assembly, and a fan. The high-velocity air flow guide includes a first portion and a second portion. The first portion is configured to form a passage within the housing, and the second portion is configured to divert and accelerate air flow of the ambient air from the passage to a chamber of the housing. The filter assembly includes one or more filtering elements configured to receive the ambient air from the chamber. The fan is configured to draw the ambient air from the chamber through the filter assembly and to generate processed air from the ambient air.

Abstract: Clean corona gas ionization by separating contaminant byproducts from corona generated ions includes establishing a non-ionized gas stream having a pressure and flowing in a downstream direction, establishing a plasma region of ions and contaminant byproducts in which the pressure is sufficiently lower than the pressure of the non-ionized gas stream to prevent at least a substantial portion of the byproducts from migrating into the non-ionized gas stream, and applying an electric field to the plasma region sufficient to induce at least a substantial portion of the ions to migrate into the non-ionized gas stream.

Abstract: An oxygen generator includes a monolithic body having first and second channels extending longitudinally therein. An electrode is operatively disposed in the first channels and a counter-electrode is operatively disposed in the second channels. The second channels are formed in the monolithic body so each second channel is electrically isolated from, yet adjacent to a first channel, resulting in an alternating configuration of first and second channels. The first channels have fluid or oxygen flowing therethrough, while the second channels have the other of oxygen or fluid flowing therethrough. An output manifold, having an oxygen collection area separated from a fluid collection area, operatively engages with the monolithic body. The oxygen collection area receives substantially pure oxygen from one of the second or first channels, and the fluid collection area receives oxygen-depleted fluid from the other of the first or second channels.

Abstract: A filtration device including a filtration medium having a plurality of nanofibers of diameters less than 1 micron formed into a fiber mat in the presence of an abruptly varying electric field during electrospinning of the plurality of nanofibers. The nanofibers retain charge in the filtration medium from the electrospinning. The filtration device includes a support attached to the filtration medium and having openings for fluid flow therethrough. A method for making a filter material. The method provides a support having openings for fluid flow therethrough, electrospins nanofibers across an entirety of the openings, abruptly varies an electric field at the collector at least once during electrospinning of the fibers, and retains charge on the nanofibers after formation of the filtration medium.

Abstract: A plasma method and apparatus for purifying an offgas containing inorganic and organic pollutants. A plasma torch (26) is formed by interaction of the offgas (6) with an electric field (E) created by a voltage (V) applied between one or more couples of electrodes (16) arranged upstream/along a purification chamber (1); the electric field is such that an electric discharge takes place which ionizes the offgas (6) and causes a redistribution of atoms/molecules, thus creating longer molecules, which form a liquid residue (23), and shorter molecules, which form a purified gas (7). The gas undergoes an expansion that is caused by a diverging portion (21) of the purification chamber and assists preliminary cooling of the of fgas/purified gas (6/7). A tube-bundle exchanger (2) is provided and has a cross section larger than the outlet port (14) of the chamber to allow further expansion/cooling. A scrubber (3) is arranged downstream exchanger (2).

Abstract: Clean corona ionization bars separate contaminant byproducts from corona generated ions by establishing a non-ionized gas stream having a pressure and directed toward an attractive non-ionizing electric field of a charge neutralization target, by establishing a plasma region of ions and contaminant byproducts in which the pressure is sufficiently lower than the pressure of the non-ionized gas stream to prevent byproducts from migrating into the non-ionized gas stream. The ionization bar(s) may be located sufficiently close to the charged neutralization target that a non-ionizing electric field of the target induces at least a substantial portion of the ions to migrate into the non-ionized gas stream and to the neutralization target as a clean ionized gas stream.

Abstract: Purification method and apparatus for purifying a gas stream by oxygen removal. The apparatus includes primary and secondary oxygen separation zones and tubular electrically driven oxygen separation elements. There are more elements in the primary zone than the secondary zone so that low concentrations of oxygen can be obtained in a purified stream and turbulent flow conditions can also be obtained that will permit purification to very low levels. In addition, a junction is provided to connect the tubular separation elements to metallic elements such as manifolds.

Abstract: Clean corona gas ionization by separating contaminant byproducts from corona generated ions includes establishing a non-ionized gas stream having a pressure and flowing in a downstream direction, establishing a plasma region of ions and contaminant byproducts in which the pressure is sufficiently lower than the pressure of the non-ionized gas stream to prevent at least a substantial portion of the byproducts from migrating into the non-ionized gas stream, and applying an electric field to the plasma region sufficient to induce at least a substantial portion of the ions to migrate into the non-ionized gas stream.

Abstract: A method for making a metal fluoride trap including: assembling a precipitation tube assembly including a plurality of precipitation tubes supported between a first tube end support and a second tube end support; assembling a precipitation tube, flowsheet and filter media assembly including: wrapping a flowsheet around at least one full circumference of the plurality of precipitation tubes, wherein the flowsheet has a width less than a length of the plurality of precipitation tubes between the first tube end support and the second tube end support; and wrapping a filter media around the wrapped flowsheet, wherein the filter media and the flowsheet are wrapped so as to have a diameter less than an inner diameter of an outer casing of the metal fluoride trap; inserting the precipitation tube, flowsheet and filter media assembly into the outer casing of the metal fluoride trap; allowing the flowsheet to expand; and pressing the filter media between the flowsheet and an inner surface of the outer casing of the me

Abstract: The present invention is related to preventing dust agglomeration on a sharp electrode which is used for generating corona. According to certain aspects, the invention includes a dust shroud which decreases or prevents dust accumulation on the sharp electrodes. The dust shroud changes the gas flow path so as to reduce the amount of gas passing near the sharp electrode. An advantage of the shroud is that it prevents dust from building up on the electrodes. The shroud is a simple, passive addition to the electrostatic pump, such that the pump is otherwise able to operate normally throughout its life. In embodiments, the shroud can be used to protect a corona electrode used in heat sink applications especially in electronics cooling. It can also be used in electrostatic precipitators for cleaning dust or chemical or microbe particles from air.

Abstract: An airflow shaper for use in an air cleaner is provided according to an embodiment of the invention. The airflow shaper includes a body including a substantially central axis and a raised central region formed on the body. The raised central region transitions an impinging axial airflow into a substantially radial airflow or transitions an impinging radial airflow into a substantial axial airflow.

Abstract: The present invention provides a method and apparatus for removing chemical sterilant molecules from a medium, such as a carrier gas. In one embodiment, the apparatus includes a housing that defines an internal cavity. The housing has an inlet and an outlet fluidly communicating with the internal cavity. An electrode is dimensioned to be received in the internal cavity of the housing. The electrode is made of a material that is chemically active with respect to molecules of a chemical sterilant and conductive to electricity. The electrode is connected to a source of an electrical charge such that an electrical field gradient is formed in a region of space surrounding the electrode. The electrical field gradient is operable to force the chemical sterilant molecule toward the electrode.

Abstract: The present invention relates to a device and method for separating particulate material from a gas flow, comprising a substantially elongate housing provided with a peripheral wall and an inlet opening for admitting the gas flow with particulate material into the housing; a number of electrodes extending in the housing up to a predetermined radial distance from the peripheral wall; and an outlet opening arranged downstream in the housing for discharging the gas flow, wherein the outlet opening extends from the axial centre line of the housing to a point some radial distance from a peripheral wall of the housing, and wherein the particulate material is guided into an intermediate space between the outlet opening and the peripheral wall.

Abstract: A powder dust capture device includes a main body housing (17) having an air intake (18) in which a powder dust capture unit (19) is provided, and a blowing unit (16) for drawing air in from the air intake via the powder dust capture unit, passing the air through a predetermined area, and expelling the air out from an exhaust (24). The powder dust capture unit includes a filter unit (30), a filter feeding mechanism and a filter feed control unit. The filter unit includes an electrostatic filter (20) wound around a rolling shaft (31a), a filter take-up shaft (31b), and a small housing (32) storing them. The filter unit is attachable/removable with respect to the main body housing. The small housing has an aperture part (33) for drawing in air through the electrostatic filter. The filter feed control unit has a filter feed amount detection unit (35, 42), and controls a filter feeding operation performed by the filter feeding mechanism, based on detection output from the filter feed amount detection unit.

Abstract: Devices and systems are provided, that entrain ambient air within a primary stream of pressurised air, for use in a variety of applications including aircraft, buildings and other stationary structures. The ambient air is drawn through an air treatment such a filter before entrainment within the primary stream. The combined streams are then delivered to a ventilation system, an air curtain or other suitable recipient of treated, thermally conditioned air. The systems include air curtain systems and ventilation systems for aircraft and other vehicles.

Abstract: An air/oil separator for use in a gas turbine engine includes a labyrinth path having an air/oil inlet, air outlet and oil outlet, a device for creating an electrical field within the labyrinth path and a device for creating a suction action at the oil outlet to draw liquid oil from the labyrinth path and for delivering the liquid oil under pressure to a pressurized source of oil in the engine.

Abstract: A method for air purification from dust includes electrically charging dust by air ionization; and collecting the charged dust by an electric field force, performed in a common airflow while changing the direction of the airflow at least once by an angle of more than 135°.

Abstract: A method and apparatus electrically charges particulates that need to be removed from a moving air stream. Various methods of corona charging of particulates are used in the fields of electrostatic precipitation of dust, printers and copying machines. This invention is preferably specifically aimed at improving the separation and collection of particulates from dust, mist or vapor generating devices. In another embodiment, a grid electrostatic precipitator, in combination with a corona pre-charger, is used to remove diesel exhaust.

Abstract: A multi-stage collector for multi-pollutant control that contains alternating narrow and wide sections with glow discharge electrodes in some narrow sections, a uniform electric field in wide sections for collecting particles charged by the glow discharge and streamer discharge electrodes in wide or narrow sections that convert and destroy harmful gaseous pollutants such as SO2, NOx and volatile organic compounds as well as convert heavy metals such as mercury into a particulate form. Steady state streamer discharge is supported by non-pulsed power supply. The streaming discharge can convert the polluting gases into nitric and sulfuric acid which can be removed by combining it with ammonia to form solid salts.

Abstract: An electrostatic precipitator includes an inertial gas-contaminant impactor separator providing two stage separation and reducing contaminant collection load on the collector electrode at the corona discharge zone to reduce contaminant build-up thereon and extend service intervals for cleaning or replacement thereof.

Abstract: A compact, hybrid particulate and gas collector that can be used in a vehicle emissions control system, gas turbine, or in any other application where space and lower cost is important or in applications where sub-micron and nano-particulate filtering is needed. A gas flow enters the device in a first chamber and can be immediately exposed to a high-tension corona discharge electric field which typically results in a strong ionic flow by charging and collecting the incoming effluent (oil mist, soot particles, etc.). Subsequently, the charged flow enters a second zone of high-tension uniform electric field that causes the remaining charged particles to migrate to one of the charged electrodes. One of the electrodes can be made of porous filter material that allows the cleaned gas to flow into an exit zone also containing a high-tension uniform electric field where the remaining effluent can be collected prior to the clean gas exiting either to ambient air or being re-circulated to be used again by the engine.