Abstract: A dust collector includes a charging part (12) for charging dust with electricity and a dust collecting part (30). Each of a dust collecting electrode (40) and a high-voltage electrode (50) that constitute the dust collecting part (30) includes: a base (41, 51) with a rectangular grid structure having a large number of vent holes (46, 56) formed therein; and projections (42, 52) extending into the vent holes (56, 46) of the opposed electrode (50, 40). The dust collector collects dust by generating an electric field between the dust collecting electrode (40) and the high-voltage electrode (50).

Abstract: A spark management device includes a high voltage power source and a detector configured to monitor a parameter of an electric current provided to a load device. In response to the parameter, a pre-spark condition is identified. A switching circuit is responsive to identification of the pre-spark condition for controlling the electric current provided to the load device so as to manage sparking including, but not limited to, reducing, eliminating, regulating, timing, and/or controlling any intensity of arcs generated.

Abstract: A dust collector is provided in the main body of a POS terminal so that the dust in the main body can be caught into the dust collector.

Abstract: A system for decontaminating a gas is provided. The system includes: a passageway containing at least one set of two or three electrodes. If the set contains three electrodes, it has two outer electrodes electrically connected together and one inner electrode.

Abstract: The invention relates to a pulse generating system for generating high voltage pulses to energize an electrostatic precipitator (10), the system including: a first power supply (1) and a second power supply (2), where said second power supply (2) is arranged to pre-charge said electrostatic precipitator (10) to a DC voltage; a storage capacitor (7) and a series inductance; a switching device (5) coupled in parallel with an anti-parallel rectifier device (6); and wherein the system is arranged to be coupled to the electrostatic precipitator. The invention relates to provide such a pulse generating system with enhanced efficiency compared to present pulse generating systems and with enhanced protection of the components of the system in case of sparks in the electrostatic precipitator (10). This is achieved, when the switching device (5) of the system has turn-off capability and when the system includes a clamping circuit (11-13; 60-67).

Abstract: An oxygen separation system for an engine is disclosed. The oxygen separation system may include a cathode exposed to inlet air, an anode configured to direct a flow of substantially pure oxygen to a combustion chamber of the engine, and a thin film electrolyte located between the anode and the cathode.

Abstract: A method for designing a discharge electrode of an electrostatic precipitator, includes: selecting a base design for the discharge electrode and the electrostatic precipitator; loading the base design into a computational tool for modeling collection efficiency, ?, of the electrostatic precipitator as a function of at least one of a charging volume, Vc, a charging electric field, Ec, and an electric field for charged particle, Eacc; modeling the collection efficiency, ?; and adjusting at least one aspect of the base design to improve the collection efficiency, ?, according to the modeling.

Abstract: Electrostatic system is for optimal charging of aerosols and particulates. In order to improve their collection, the system uses a combination of DC field and AC fields produced by multiple AC electrodes. The system minimizes the size and power consumption of the device, as well as increasing the collection efficiency.

Abstract: An apparatus for producing water and dehumidifying air is described. The apparatus causes moisture in an incoming air stream to combine with seed water to remove moisture from the incoming air stream, and may be used to generate water from air, dehumidify air, cool air, and the like. The ability to generate water from air has global importance as the need for clean water increases each year. The apparatus for producing water and dehumidifying air uses high voltage but extremely low current, allowing for both safe and energy efficient operations. The apparatus for producing water and dehumidifying air uses a vessel containing seed water, a bubbler immersed in the seed water, a high voltage source connected to a lower electrode and an upper electrode connected to the negative side of the high voltage source. An airflow path travels through the apparatus and water molecules are extracted from the air as it passes through the apparatus.

Abstract: A method for handling a fluid may be incorporated into the operation of, for example, a corona discharge device and an electric power supply. Such a corona discharge device typically includes at least one corona discharge electrode and at least one collector electrode positioned proximate each other so as to provide a total inter-electrode capacitance within a predetermined range. The electric power supply is connected to supply an electric power signal to said corona discharge and collector electrodes so as to cause a corona current to flow between the corona discharge and collector electrodes. A relationship between alternating and direct (or constant, non-time varying) components of the voltage may be expressed as (Vac/Vdc)?(Iac/Idc).

Abstract: The present invention relates to a vehicle air purifier with a negative/positive ion generator and an air conditioning system using the same. The vehicle air purifier includes a case including an air inlet and an air outlet, a filter arranged in the case at the side of the air inlet, a blower fan rotatably mounted in the case, and a negative/positive ion generator arranged in an air path of at least one of the air inlet and the air outlet, to emit negative ions and positive ions to air in accordance with emission of electrons.

Abstract: A method to facilitate improving electrostatic precipitator performance is provided. The method includes providing an electrostatic precipitator including an inlet, a collector chamber and an outlet, where the collector chamber includes a plurality of discharge electrodes and a plurality of collector electrodes. The method also includes defining a respective discharge electrode V-I performance for each of the plurality of discharge electrodes, identifying a particle removal characteristic for each respective discharge electrode based on the respective discharge electrode V-I performance for each of the plurality of discharge electrodes and positioning each of the plurality of discharge electrodes in the electrostatic precipitator according to the particle removal characteristic for each respective discharge electrode.

Abstract: A window screen apparatus employing electrostatic principles to purify air. The window screen mesh wires encompass electrically-conductive filaments that are charged by a high-voltage DC pulse generator. Between and surrounding the wires an electric field is created that charges, traps, and repels airborne particulate. An alternative embodiment consists of a window screen in which the screen mesh wires are manufactured from permanently electrostatically charged fibers.

Abstract: There is provided a flotage trapping device using electrostatic field. The flotage trapping device comprises a body including a power source portion and a boosting portion for boosting, fed from the power source portion, and a collector portion including a collector to which the plus and/or minus high voltage obtained from the boosting portion is applied. The collector portion is formed as a collector cassette by unitizing the collector portion in the form of cassette. A fixing mechanism is provided between the body and the collector cassette for connecting and disconnecting the body and the collector cassette through one-touch operation. The electric connecters for high voltage is provided between the body and the collector cassette for electrically connecting and disconnecting the body and the collector cassette through one-touch operation. As a result the collector cassette is detachably mounted on the body.

Abstract: Disclosed is a filtration enhancement apparatus and an associated method. The apparatus includes a number of electromagnetic grids that are placed in series. The first grid conditions ambient particles to generate particles with both a positive and a negative charge. These charged particles are then delivered to a second and third grid wherein a low, medium, and/or high frequency alternating current is employed to force the positive and negative charged particles to collide and conglomerate with one another. The conglomerated particles are then sent into the ambient environment for subsequent filtration.

Abstract: In an air purifier including a streamer discharge part (40) generating plasma by streamer discharge, a catalytic part (34) promoting the treatment of air using active species contained in the plasma and a dust collecting part (33) collecting dust in the air, the streamer discharge part (40), the dust collecting part (33) and the catalytic part (34) are arranged in sequence from the upstream side of the air flow to allow the entire face of the catalytic part (34) to effectively work and also permit the elimination of fungi and the inactivation of allergens in a dust collecting part (33).

Abstract: Provided are a hollow inner electrode constituted by an electrically conductive filter capable of capturing particulates, a cylindrical outer electrode circumferentially surrounding the electrode, a housing incorporated in a flow passage of exhaust and accommodating the electrodes and, a temperature sensor for detecting temperature of the exhaust and an electric discharge controller for controlling electric power to be distributed to the electrodes and on the basis of a detected value of the temperature sensor. When the temperature of the exhaust obtained by the temperature sensor is lowered, electric power necessary for generation of discharge plasma is distributed by the discharge controller to the electrodes and, thereby oxidizing the particulates captured by the electrode to reduce electricity consumption.

Abstract: An air transporter-conditioner device is disclosed that can include an elongated housing having a bottom, a top and an elongated side wall. The housing can have an inlet located adjacent to the bottom and an outlet located adjacent to the elongated side wall, an emitter electrode and a collector electrode and a high voltage generator operably connected to both electrodes. An impeller can be used to draw air into the housing through the inlet and direct the air toward the outlet. The housing can also include a second elongated side wall and a baffle which can include a plurality of deflectors positioned along the second elongated side wall. The baffle can include a plurality of elongated columns of varying lengths and each column can include a deflector. The device can further include a second inlet located adjacent to the elongated side wall and a germicidal lamp located inside the elongated housing.

Abstract: An apparatus for removing particulate matter from a gas stream containing particular matter, the apparatus comprising: a mist-producing element that mixes a gas stream entering the apparatus with liquid droplets; a down-flow Wet Electrostatic Precipitator (WESP) section comprising ionizing electrodes that electrically charge the particulate matter and the intermixed liquid droplets, and collecting surfaces under the influence of an electrical field which attract and remove electrically-charged particulate matter and intermixed liquid droplets from the gas stream; and an up-flow WESP section comprising electrically-charged ionizing and collecting electrodes that remove, from the gas stream, substantially all fine-sized droplets generated in the down-flow WESP section.

Abstract: A volatile organic compound treatment apparatus including an adsorber coming into contact with a gas to be treated and adsorbing volatile organic compounds; a plurality of pairs of electrodes, divided into a plurality of groups, which generate electric discharge so that a part of the adsorber is exposed to the electric discharge; and an electric discharge control mechanism for controlling whether or not the electric discharge is generated in what pair of the electrodes by applying a voltage to every group of the pair of electrodes such that different parts of the adsorber are sequentially exposed to the electric discharge.

Abstract: Disclosed is an apparatus and method for controlling an air cleaning. The apparatus includes an air cleaning element, an AC high-voltage generator and a control unit. The air cleaning element generates negative ions and ozone using plasma discharge, and cleans indoor air using the negative ions and ozone. The AC high-voltage generator generates an AC high-voltage, and applies the AC high-voltage to the air cleaning element. The control unit varies at least one of the AC voltage and AC frequency applied to the air cleaning element by the AC high-voltage generator depending on a state of indoor air being cleaned using the air cleaning element. Therefore, it is possible to effectively generate negative ions while minimizing ozone generation to an acceptable level depending on a state of indoor air, thereby increasing air cleaning performance so as to sterilize and clean contaminants more efficiently.

Abstract: An apparatus for removing particulate matter from a biomass combustion gas stream, the apparatus having a mist-producing element that mixes a gas stream entering the apparatus with liquid droplets; a Wet Electrostatic Precipitator (WESP) section that includes ionizing electrodes that electrically charge the particulate matter and the intermixed liquid droplets and collecting surfaces under the influence of an electrical field which attract and remove electrically-charged particulate matter and intermixed liquid droplets from the gas stream; and a scrubbing section that provides for additional scrubbing of the gas.

Abstract: The present invention provides an air treatment device including a housing, an emitter electrode configured within the housing and a collector electrode configured within the housing and positioned downstream from the emitter electrode. The device preferably increases the ions produced for a start up period after the device is initially turned on, wherein the device automatically decreases ion production after the desired period. The device preferably includes a first and second voltage source to selectively increase and decrease voltages applied to the emitter and/or collector electrode to adjust the ion production. In one embodiment, the device includes a voltage controller to selectively adjust the voltage provided by the voltage source for the start up period and normal operation.

Abstract: A compact electrostatic precipitator is designed specifically for use in connection with eliminating particles from crankcase emissions of a Diesel engine. Such emissions may carry solid soot particles as well as suspended oil droplets. The electrostatic precipitator has an electrode housing in which a high voltage electrode is mounted, and the emissions from the crankcase of a Diesel engine are passed across the electrode to an outlet. A high voltage power supply is mounted in a separate housing, and the output of the high voltage power supply is connected to the electrode only when the electrode housing and the power supply housing are properly mated, to thereby disable the high voltage connection to the electrode when the power supply housing is removed.

Abstract: An electrostatic precipitator having a plurality of electrostatic precipitation units positioned within the electrostatic precipitator. Each of the electrostatic precipitation units includes a plurality of negative wire electrodes and a plurality of positive electrode plates. The electrostatic precipitation units are arranged such that spacing between the negative wire electrodes of a first electrostatic precipitation unit is a first distance apart, and spacing between the negative wire electrodes of additional electrostatic precipitation units is less than the spacing between the negative wire electrodes of the first electrostatic precipitation unit. Moreover, a variable voltage is applied to the each of the electrostatic precipitation units between the positive electrode plates and the negative wire electrodes so as to cause particles in the exhaust gas to adhere to the positive electrode plates.

Abstract: Disclosed is an air purifier having a small size so as to be easily mounted to various home appliances, and preventing ozone which is harmful to a human body from being generated, the air purifier including an insulating dielectric including a solid; a discharge electrode provided in the insulating dielectric; a ground electrode provided in the insulating dielectric and spaced for a predetermined distance from the discharge electrode; and a power supply coupled with the discharge electrode and the ground electrode for supplying a high voltage thereto.

Abstract: Disclosed is a filtration enhancement apparatus and an associated method. The apparatus includes a number of electromagnetic grids that are placed in series. The first grid conditions ambient particles to generate particles with both a positive and a negative charge. These charged particles are then delivered to a second and third grid wherein a low, medium, and/or high frequency alternating current is employed to force the positive and negative charged particles to collide and conglomerate with one another. The conglomerated particles are then sent into the ambient environment for subsequent filtration.

Abstract: An air purifier for removing particles in air includes an outer casing, and an ionizer module. The ionizer module includes a power unit and an ionizing electrode unit, electrically connected to the power unit. The ionizing electrode unit includes a first electrode set as an electrode terminal disposed within the outer casing at an air inlet, a second electrode set disposed within the outer casing at an air outlet, and a third electrode set disposed within the outer casing at a position between the first and second electrode set, wherein a voltage of the third electrode set is higher than a voltage of the first electrode set for drawing the air from the first electrode set to the second electrode set via the second electrode set while dirt particles contained in the air is trapped on the second and the third electrode sets.

Abstract: A device for handling a fluid includes a corona discharge device and an electric power supply. The corona discharge device includes at least one corona discharge electrode and at least one collector electrode positioned proximate each other so as to provide a total inter-electrode capacitance within a predetermined range. The electric power supply is connected to supply an electric power signal to said corona discharge and collector electrodes so as to cause a corona current to flow between the corona discharge and collector electrodes. An amplitude of an alternating component of the voltage of the electric power signal generated is no greater than one-tenth that of an amplitude of a constant component of the voltage of the electric power signal.

Abstract: A polarized media electronic air filter assembly has an electronics box mounted along one side by a slid-in fit into an open, receiving channel. Arcing between screens is reduced by using a relatively resistive material for at least one of the screens exposed to arcing.

Abstract: A gas separation apparatus using electrostatic precipitators and mechanical rappers is enhanced by the addition of an opposite polarity refreshing power supply and a switching arrangement. The switching components selectively disconnect the primary power supply and connect the refreshing power supply to the electrostatic precipitator, causing an electrical impulse in the precipitator sufficient to dislodge precipitate from the collector plates. An RC filter is further provided to control the impulse and reduce the burden that would otherwise be placed upon the refreshing power supply. The novel separation apparatus and technique offer particular synergy when applied to the effluent stream from a coal-fired electric power plant or other similar gas streams.

Abstract: A gas separation apparatus which uses electrostatic precipitators and a DC power supply is controlled to optimally remove moderate to high resistivity ash. The DC power supply is pulse width modulated to maximize the product of the peak electric field and the average electric field. The method used to optimize operation includes selecting initial on and off times for the power supply, operating the power supply using the initial off and on times, and progressively decreasing the off time. A determination is made whether the off time may be further decreased. Ultimately, the on and off time intervals that produce the highest peak and average voltage are determined, and the system is operated using these parameters. A procedure may be periodically repeated to monitor the process and detect if there has been a change in the system that would require new time intervals.

Abstract: An apparatus for separating and converting exhaust particulates from a stream of exhaust gas, especially a diesel engine, into gaseous substances, in which the exhaust gas is guided through a honeycomb filter (6) made from a porous ceramic material whose axially extending channels (1, 2) are open merely at one face side of the filter and are closed off at the respective other face side, and a voltage is applied to electrodes (3, 4) extending parallel to the channels (1, 2) of the honeycomb filter (6). The closure of the channels (1, 2) at the face side is made in such a way that the channels (1, 2) each extending at the same normal distance from one of the electrodes (3, 4) are either all open or all closed off at their face side (9). The channels (1, 2) are mutually offset in a brickwork-like way.

Abstract: An example airborne conductive contaminant handling system is described. The airborne conductive contaminant handling system may include a handling circuit that is configured to selectively pass an electric current through a conductive contaminant. The airborne conductive contaminant handling system may also include an attracting circuit that is configured to attract an airborne conductive contaminant towards the handling circuit, where it can be subjected to the electric current.

Abstract: An electrostatic precipitator, including for a diesel engine electrostatic crankcase ventilation system for blowby gas, includes a corona discharge electrode assembly in a housing, an insulator extending along an internal surface of a wall of the housing, a power supply in the housing on the opposite side of the insulator from the housing wall such that the insulator is between the housing wall and the power supply, and a low voltage lead extending through the housing wall and through the insulator to the power supply, eliminating pass-through of a high voltage lead through the housing wall and through the insulator. The power supply is preferably provided in the hollow interior of the corona discharge electrode assembly.

Abstract: An air filtration system according to the present invention includes an enclosure having a floor section, a top section and an opening. A ventilation subsystem within the enclosure includes an air duct having an air intake and an exhaust vent. First and second electrode arrays are positioned with in the air duct so that the first array is located between the air intake and the second array and the second array is located between the exhaust vent and the first array. A voltage regulator is electrically coupled to the first and second electrode arrays to apply a voltage differential between the electrode arrays that creates an air flow within the air duct drawing air into the air intake and out of the exhaust vent. Airborne particulate matter carried through the air duct collects on the second electrode array.

Abstract: A blower apparatus for a vehicle for blowing air into a cabin. The blower apparatus including a case member, various units and airflow passages. The units include an air cleaning unit for cleaning the air, and a component-adding unit for adding air components such as ions to the air. The units have compatible external shapes and sizes for selective installation in almost the same positions in the airflow passages, thereby meeting user needs of changing the function of the blower apparatus simply by arranging the units to the desired positions.

Abstract: A plurality of discharge electrodes are grouped for respective gas passages that are defined by collecting electrodes (11-15). The discharge electrodes in each group are connected to a common power supply unit for receiving output voltage through a diode provided for each group and are connected to a spark electrode (21). The spark electrode is positioned such that it sparks between a hammer (20) in a passageway of the hammer upon striking. Each group of the discharge electrodes has a ground unit to be grounded just before the collecting electrodes on both sides thereof are struck.

Abstract: Apparatus for the purification of air, flue gases in which apparatus the air, flue gases or equivalent are directed into a duct, in which apparatus the air, flue gases are ionized, and in which apparatus charged impurity particles (7) present in the air, flue gases or equivalent are attracted by one or more collector surfaces (2) by virtue of a difference in the states of charge, causing the particles to settle on the surface. The air, flue gases are ionized by virtue of one or more ionizing electrodes (5) directed at a collector surface. The distance between the ionizing electrode or equivalent and the collector surface and the difference between the state of electric charge of the collector surface and the charged impurity particles are so adjusted that the impurity particles will move essentially directly towards the collector surface and settle on it.

Abstract: A device (10) for purifying a gas stream (30) made up of a plurality of DBD cells (12a, 12b, 12c) in series and, for each of the DBD cells (12a, 12b, 12c), a power supply (24a, 24b, 24e) for providing alternating current to each DBD cell (12a, 12b, 12e).

Abstract: An electrostatic air cleaner for installation in an air-circulating system, including a flow sensor for sensing the flow of air across the electrostatic air cleaner, and a switch, responsive to the flow sensor, for operating the electrostatic air cleaner only when the flow of air exceeds a predetermined threshold. More particularly, the electrostatic air cleaner includes an electrostatic air cleaner cover unit adapted to be secured over the opening in a frame in the air circulating system which frame contains at least one removable electrostatic air cleaning cell. The cover unit has a baffle for substantially blocking the air flow between the electrostatic air cleaning cell and the cover unit. The baffle has an opening therein, and a bypass tube is aligned with the opening in the baffle. An air flow sensor is disposed in the tube for sensing the air flow through the tube. The air flow sensor preferably includes a self-heating thermistor for sensing the flow in the bypass tube.

Abstract: An apparatus for charging an electrostatic precipitator, powered by a power supply and having a plurality of corona electrodes and a plurality of collector electrodes, such that a precipitator capacitance may be formed therebetween, includes a storage capacitor across the power supply, having a storage capacitance. A voltage switch is capable of selectively electrically coupling the electrostatic precipitator to the storage capacitor. The storage capacitance is sufficient to charge the electrostatic precipitator to a preselected operative voltage within a rise time greater than a first preselected value and less than a second preselected value.

Abstract: A miniature air purifier produces a corona discharge surrounding a needle-like emitter point connected to a negative DC power supply. The power supply operates from a nine volt battery and contains a step-up voltage inverter having a single transformer outputting high voltage spikes with a voltage multiplier operating on the output of the inverter. The production of high voltage spikes of about 200 Hz rather than a sinusoidally varying voltage significantly reduces current consumption. The needle-like emitter point is located about 1/4-inch from an 80% open mesh metallic grid held at ground potential. Corona discharge at the emitter point ionizes the air and creates ozone, and nitric oxide both of which combine with direct electron impact decomposition to detoxify and destroy a wide variety of airborne pollutants including pathogens, chemicals and allergens.

Abstract: An ionization field is produced across the intake air flow to an internal combustion engine to increase the content of oxygen in the stream, and the stream reactivity. This ionization field may be produced between a sharp electrode and a grid or sheet, positioned in a shielded structure like the filter housing on the engine intake. Alternatively, an ultraviolet light source may be used to ionize the oxygen in the air stream. In either form the ionization field may be also used across the ventilation air stream fed to the passenger compartment as an air conditioning function, and the ionization power may be modulated along with the demand. Thus the throttle position may be sensed to modulate the voltage multiplier levels across the filter housing air stream, and the ionization power to the heater plenum chamber may be modified in accordance with the fan speed.

Abstract: A self-contained electrostatic air filter assembly having two hinged rectangular frames into which is disposed rectangular polyester/wool filter dielectrics with a conducting charging screen in between. The polyester/wool dielectrics are charged through the conducting screen by a high voltage power supply having a low source resistance. The high voltage supply having a small source resistance is integrated into the air filter assembly and connected electrically to the conducting screen. High voltage is quickly dissipated from the screen and dielectrics when the unit is turned off by a specially designed bleeder resistor. As an air mass is forced through the filter, particulates in the air are removed electrostatically quickly and efficiently by the charged polyester/wool filter material. The air filter assembly has been shown to have a high particulate capacity.

Abstract: A miniature air purifier produces a corona discharge surrounding a needle-like emitter point connected to a negative DC power supply. The power supply operates from a nine volt battery and contains a step-up voltage inverter having a single transformer outputting high voltage spikes with a voltage multiplier operating on the output of the inverter. The production of high voltage spikes of about 200 Hz rather than a sinusoidally varying voltage significantly reduces current consumption. The needle-like emitter point is located about 1/4-inch from an 80% open mesh metallic grid held at ground potential. Corona discharge at the emitter point ionizes the air and creates ozone, and nitric oxide both of which combine with direct electron impact decomposition to detoxify and destroy a wide variety of airborne pollutants including pathogens, chemicals and allergens.

Abstract: A corona discharge reactor (10) and method for chemically activating various constituents of a gas stream by use of corona discharge is provided. The corona discharge reactor (10) includes within a conduit a discharge plate (30a,b) having a plurality of through openings (33) and a plurality of projecting corona discharge electrodes (31,31',35,35'), and an electrode plate (40a,b,c) having a plurality of through openings (43) displaced from and opposing the tips (32) of the corona discharge electrodes (31,31',35,35'). A pulsed energization scheme is employed to intermittently generate a uniformly distributed corona discharge cloud (1000) between the plurality of corona discharge electrode tips (32) and the electrode plate (40a,b,c) during passage of the gas stream through the conduit.

Abstract: A dust neutralizing and flocculating system used in an air cleaning system for removing contaminants contained in indoor air including a radio frequency generating electrode and an ion generating electrode. Fine particles passing through a moderately efficient filter equipped in the air cleaning system sequentially pass through the radio frequency generating electrode and ion generating electrode. The fine particles are dipolarly magnetized while passing through the radio frequency generating electrode, thereby exhibiting an increased inter-particles attraction. The ion generating electrode adds cations and anions to the fine particles, thereby promoting the flocculation of the fine particles circulating in the room installed with the air cleaning system. By virtue of the promoted flocculations, the particle size of the particles circulating in the room increases. The particles with an increased size are secondarily removed by the filter.

Abstract: A miniature air purifier produces a corona discharge surrounding a needle-like emitter point connected to a novel negative 8,000-volt DC power supply. The power supply operates from a nine volt battery and contains a step-up voltage inverter having a single transformer outputting high voltage spikes with a voltage multiplier operating on the output of the inverter. The production of high voltage spikes of about 200 Hz rather than a sinusoidally varying voltage significantly reduces current consumption. The needle-like emitter point is located about 1/4-inch from an 80% open mesh metallic grid held at ground potential. Corona discharge at the emitter point ionizes the air and creates ozone, and nitric oxide both of which combine with direct electron impact decomposition to detoxify and destroy a wide variety of airborne pollutants including pathogens, chemicals and allergens.

Abstract: An air cleaner assembly for ionizing and filtering air is supported by an electrical receptacle mounted in a wall. A housing supports an enclosed filter and a fan forces air into the housing, wherein the air is filtered and ionized. The filtered and ionized air is forced out of the housing through a grill mounted within the housing. A plug connected to the housing is mateable with the wall mounted electrical receptacle to provide power to the fan and to force air into the housing, through the filter, past the ionizer and out through the outlet grill.