Abstract: An adjustable eddy electrostatic precipitator, including a main body, an electrode array, an adjustable opening and a precipitating device. The main body has an inner space with an air guiding plate of helical shape, an entrance for air and an exit for air. The electrode array is placed close to the entrance, ionizing air as well as particles floating therein. The adjustable opening is located at the exit, having an adjustable aperture. The precipitating device is connected with a bias high voltage for adsorbing ionized particles. Air entering the main body through the entrance is ionized, ionizing particles floating therein. Ionized particles are driven towards a single zone and are collected depending on size and charge in an adjustable manner.

Abstract: An air cleaner electrode assembly includes an elongated collector electrode and a plurality of elongated discharge electrodes arranged around the collector electrode. A fan may move air in a direction parallel to a length of the electrodes. The collector electrode may have a plurality of distinct faces where at least one discharge electrode is associated with a corresponding face. A cleaning shuttle may be configured to ride on and remove debris from the elongated electrodes. A voltage differential across the electrodes and the fan speed may be adjusted independently of each other.

Abstract: A ceiling-fan air purifier and freshener has an edge clip (1) which is adapted to be clipped onto leading edges of fan blades (2) of ceiling fans (3) in either direction of rotation has a gluey adhesive (11) on a top surface of the edge clip. The gluey adhesive captures and contains dust and germs that are too small to be retained by air strainers and filters and that can increase instead of stop growth of germs in room air. It is intended to be used for hospitals, residences and businesses. The edge clip is adapted for: (a) reliable attachment, (b) structural compatibility with select classes of ceiling fans, (c) easy removal, (d) low-cost replacement and (d) user-friendliness. It is adaptable for being colored and designed for matching aesthetics of the select classes of ceiling fans and use conditions. The gluey adherent can include predetermined surface corrugation and unevenness for maximizing germ and particle retainment.

Abstract: A method for removing pollutants from a gas such as air includes attaching a multi-layer stack of sheets to the surface of a fan blade. The sheets have a tacky surface disposed on their outward facing side, so that as the fan blade rotates pollutants are captured by the tacky surface. When the tacky surface of the top most sheet becomes contaminated with pollutants, it is peeled off to expose a clean uncontaminated next lower sheet.

Abstract: A filtration system for filtering particulates from air. A plurality of point ionization sources are positioned in the proximity of the periphery of an air flow channel and being oriented to generate ions in the proximity of the air flow channel in a direction generally upstream from each respective one of the plurality of point ionization sources. A particulate collection surface is positioned within the air flow channel in a downstream direction from the plurality of point ionization sources. The particulate collection surface is electrostatically charged in an opposite direction with respect to ground than the electrical charge of the ions. An ion trap is positioned within the air flow channel between the plurality of ionization sources and the particulate collection surface. The ion trap is relatively electrically neutral as compared with the particulate collection surface and the ions.

Abstract: A device for filtering a dirty air stream in a vacuum cleaner to obtain a clean air stream includes subjecting the dirty air stream to a first cyclonic separation stage to obtain a partially cleaned air stream and subjecting the partially cleaned air stream to an electronic filtration stage and optionally a second cyclonic separation stage to obtain the clean air stream. The electronic filtration stage is optionally removable with a cyclonic cleaning stage from the vacuum cleaner. The electronic filtration stage is optionally an electrostatic precipitator which utilizes air flow through the vacuum cleaner to generate the voltage used by the electrostatic precipitator.

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: It is disclosed a combined system for the elimination of pollutants from gaseous effluents of the type that comprises means for carrying out at least one electronic bombardment operation and means for carrying out at least one electrostatic interaction operation, in which a heat diffusion and molecular destabilization operation is performed as a previous treatment in order to restrict the flow of gases in such a way that it causes the gas molecules and suspended particles to tend to split up and electronically destabilize at the time that the temperature of the same gases is reduced; and/or a magnetic molecular rearrangement operation is carried out prior to each electrostatic interaction operation, consisting of subjecting the gases to a magnetic field having such a force that achieve a rearrangement of the sub-particles and heavier molecules thus achieving a selective separation that prepares the gaseous stream for the electrostatic interaction operation.

Abstract: An apparatus for removing particles from air, including an inlet for receiving a flow of air, a first chamber in flow communication with the inlet, wherein a charged spray of semiconducting fluid droplets having a first polarity is introduced to the air flow so that the particles are electrostatically attracted to and retained by the spray droplets, and an outlet in flow communication with the first chamber, wherein the air flow exits the apparatus substantially free of the particles. The first chamber of the apparatus further includes a collecting surface for attracting the spray droplets, a power supply, and a spray nozzle connected to the power supply for receiving fluid and producing the spray droplets therefrom. The apparatus may also include a second chamber in flow communication with the inlet at a first end and the first chamber at a second end, wherein particles entrained in the air flow are charged with a second polarity opposite the first polarity prior to the air flow entering the first chamber.

Abstract: An air purifier (10) is provided having a housing (11) having a grilled air inlet (12), a grilled air outlet (13), and a control panel (14). The air purifier (10) also includes a pre-filter (16), a main filter (17), a blower (18) and a controller (19), all mounted within the housing (11). The controller (19) has a central processing unit having a permanent memory for storing the program instructions for operation and control of the air purifier, a working memory, and a non-volatile memory for the permanent storage of programs and counters. The controller is programmable so as to control the operation of the blower according to time and speed parameters entered into memory.

Abstract: A system for separating a gaseous constituent from a gaseous mixture includes an ionization chamber, suction plenums separated from the chamber by an anode or a cathode, suction pumps for drawing gas from the plenums, and a throttle valve for controlling the entry of gas into the ionization chamber so as to maintain the chamber at a pressure less than atmospheric. The ionization chamber is bounded by an anode and a cathode, which are separated by a volume for containing the gaseous mixture. When the electrodes are oppositely charged, ions of a gaseous constituent are drawn towards the electrode of opposite polarity to the ions, and away from the other electrode. As ions approach the electrodes, they are collected and sucked though exhaust ports by the pumps.

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 device for cleaning gases includes a housing and a plurality of electrostatic filter units. Each of the filter units have a tube-shaped covering, and the housing has an intake opening at one end and an outlet opening at the other end for gas flow. The filter units have an essentially airtight arrangement within the housing. The filter units combine to form a filter assembly arranged inside the housing such that the assembly can be inserted and removed from the housing in one piece.

Abstract: An apparatus for filtering a dirty air stream in a vacuum cleaner to obtain a clean air stream includes subjecting the dirty air stream to a first cyclonic separation stage to obtain a partially cleaned air stream and subjecting the partially cleaned air stream to an electronic filtration stage and optionally a second cyclonic separation stage to obtain the clean air stream. The electronic filtration stage is optionally removable with a cyclonic cleaning stage from the vacuum cleaner. The electronic filtration stage is optionally an electrostatic precipitator which utilizes air flow through the vacuum cleaner to generate the voltage used by the electrostatic precipitator.

Abstract: An ionizing structure for ambient air treatment wherein the structure, optionally having ceiling-mounting provisions, incorporates an ionizing element forwardly directed in the direction of airflow through the structure, an electrical power supply coupled to the ionizing element for applying thereto a stepped-up, negative, direct-current voltage of the order of several thousand volts, and a buffer, in effect, in the form of electrical circuit means, e. g. a filter, operatively interposed between the power supply and the blower for preventing feedback of eddy-voltage spikes, transients and the like as may be generated in the power supply to the operative parts of the blower, thus preventing damage to the blower.

Abstract: A purification system for preventing secondhand tobacco smoke from reaching an ambient environment thereabout. Two components of the system include a smoke entrapment intake hood for aggregating the secondhand smoke and an electrostatic suction filter assembly in communication with the entrapment hood for extracting aggregated smoke from the hood, removing untoward particulate from the smoke, and releasing resulting clean air to the environment. The filter assembly includes at least one particulate filter for collecting smoke-borne particulate and at least one appropriately charged or grounded plate for electrostatically collecting charged smoke-borne particulate. An exit port from the filter assembly permits the release of so-cleaned air to the environment as a negative-ion emitter, positioned immediately inside the exit port, introduces charged ions into the cleansed air.

Abstract: An economical air purification system and process that greatly reduces concentrations of dust and noxious gases to provide for a cleaner and healthier enviroment for people, plants, poultry and other animals. Desirably, the special air purification system and process has a set of modules arranged for emitting overlapping flow patterns of ions. The modules can include parallel arrays of ionizers which are preferably arranged in a matrix or grid pattern. For even better results, the ionizers can comprise self-cleaning ionizers. One or more fans can be spaced from the modules to circulate the ions and air as well as draw influent air through the intake ports and exhaust purified air through the outlet ports. Heaters can also be provided to heat the circulating air.

Abstract: A filter apparatus for use in removing mist, smoke and particles generated by a machine tool includes a mechanical first filtration stage and a second filtration stage consisting of an electrostatic precipitator. A blower device creates a stream of air for entraining and moving mist, smoke and other particles upwardly through the first and second filtration stages. Circuitry is provided selectively opening the circuit to the collector of the electrostatic precipitator. The collector is energized by a lower voltage from the ionizing field when current to the collector is interrupted. By energizing the collector of the electrostatic filter at a low voltage and by operating the blower unit at a low velocity, mist, smoke and other particles are efficiently collected without shorting the collector plates when water based metal working fluids are used.

Abstract: An air treatment device is adapted to be mounted on and directly supported by an electrical socket. A treatment medium, such as a replaceable electrostatic filter or a replaceable absorber/adsorber, is located at the front of the device. A fan draws air through the medium and particles with a particle size above 0.1 &mgr;m are removed.

Abstract: The present invention is directed to a device (1;1′;1″; 1′″; 1″″; 1′″″) for air cleaning, especially from electrically charged particles, the device (1;1′;1″; 1′″; 1″″; 1′″″) including an air flow channel (2;2′;2″; 2′″; 2″″; 2′″″), an air transporting mechanical fan (3;3′;3″; 3′″; 3″″; 3′″″), a precipitator (4;4′;4″; 4′″; 4″″; 4′″″), a high voltage source (5;5′;5″; 5′″; 5″″; 5′″″), the precipitator (4;4′;4″; 4′″; 4″″; 4′″″) including two band-like electrode elements that are wound several times around an axis or bobbin body (7;7′;7″; 7′″; 7″″; 7′″″), a gap distance being present betwee

Abstract: Disclosed is a portable air filtration system for removing contaminants from room air. In one embodiment, the air filtration system comprises a power supply and an air blower module electrically connected to the power supply. The air filtration system further comprises an ionization module engaged with the air blower module and comprising a first control grid and a high voltage grid electrically connected to the power supply. The air filtration system further comprises a filter module removably engaged with the ionization module. The filter module comprises a filter and a second control grid. Engagement of the filter module and the ionization module creates an electrical connection between the second control grid and the power supply. Activation of the air filtration system creates a first ionization field between the high voltage grid and the first control grid and a second ionization field between the high voltage grid and the second control grid.

Abstract: A DC/AC air cleaner for a vehicle includes a chassis having a bottom plate and two side plates formed on two sides of the bottom plate, respectively. An insertion slot is defined in the bottom plate, and two inner plates are mounted between the side plates and configured to define a clamping slot, a positioning slot, and an engaging slot. A lower end of a face plate is held by the insertion slot. A lower end of an activated filtering mesh is held by the clamping slot. A lower end of a static discharger is held by the positioning slot, and the lower end of a fan is held by the engaging slot. An upper cover is provided to retain the upper end of the face plate, upper end of the activated filtering mesh, upper end of the static discharger, and upper end of the fan.

Abstract: The present invention refers to a device for high-purity filtering and disinfecting breathing air. The device includes a fine-dust filter and fan arranged on a housing. An elongate air flow tube is also arranged on the housing and is oriented to receive air flow from the housing. A second filter for disinfecting air is included in the elongate air flow tube. Arranged in series in the air flow tube are a third, main filter for removing microorganisms and a fourth, activated carbon filter for removing noxious fumes.

Abstract: A air dryer uses high voltage direct current to cause moisture to condense out of an airflow in contact with a network of needles creating a high intensity electric field within grounded shields. The moisture is collected in a basin positioned below the needles.

Abstract: An air cleaning apparatus provides a housing with a column shape and an air cleaning unit within a portion of the housing, the cleaning unit having a complementary shape. The air inlet and outlet nozzles to the housing are provided at a top and bottom face, with the inlet and outlet openings to the air cleaning unit corresponding with the housing nozzle inlets and outlets locations. However, the air cleaning unit inlet and outlet openings are displaced from the nozzle inlets and outlets.

Abstract: A method for filtering a dirty air stream in a vacuum cleaner to obtain a clean air stream has subjecting the dirty air stream to a first cyclonic separation stage to obtain a partially cleaned air stream and subjecting the partially cleaned air stream to a second cyclonic separation stage and an electronic filtration stage to obtain the clean air stream.

Abstract: A kitchen hood filtration system having improved odor removal properties includes an electrostatic precipitator having negative corona which generates ozone. The ozone interacts with odor-producing moieties to help eliminate the odors. The filtration system also includes a grease remover, an odor remover which utilizes the ozone, and a fan which drives kitchen effluent through the hood filtration system.

Abstract: A vacuum cleaner having a reduced velocity chamber with a high velocity air inlet, an electric motor, a rotary mechanism driven by the motor for creating a vacuum in the chamber, an outlet for exhausting air from the chamber, which air flows in a selected path from the air inlet, through the chamber and out the air exhaust outlet and a disposable porous sheet filter layer in the chamber for removing large solid particles from the air. The vacuum cleaner also has an improved filter, wherein the improved filter includes a layer of material to remove very fine air particles and a layer of material to remove odors from the air.

Abstract: A fan device comprises a front fan cover, a blade device, a rear fan cover and a rotary front net. The front fan cover is installed with a first motor and a second motor therewithin. The blade means is installed behind the front fan cover and secured to the center of the shaft of the first motor for being driven to rotate by the first motor. The rear fan cover is installed behind the front fan cover and the blade device. The rear fan cover is combined with the front fan cover. The rotary front net has many lattices. The rotary front net is properly connected to the shaft center of the second motor and is driven to rotate by the second motor. The front fan cover is installed with a fragrant piece groove, a mosquito-repellent incense piece groove and an electric heat piece, and a fan leg frame is pivotally mounted to the rear fan cover. Thereby, the output wind can be diffuse uniformly and smoothly.

Abstract: A vacuum cleaner exhaust filter assembly includes a main HEPA exhaust filter, and an ion generation stage to add ions to the air. The ion generation stage preferably is a polypropylene mesh which generates ions through static electric interaction with the moving air as the result of friction. The exhaust filter assembly preferably also includes a pre-filter impregnated with carbon, preferably in the form of activated charcoal, to absorb odors from the exhaust air. The filter components, arranged in the preferred order, are the carbon pre-filter, the main HEPA exhaust filter, and the ion generation mesh.

Abstract: A smoke and odor purifying system which can be incorporated within a housing that can serve both as a table centerpiece and an ashtray. The system having an esthetically pleasing flower vase construction with petal shaped appendages for resting of cigarettes or the like. A floral arrangement is made up of individual artificial flowers. Each flower having an opening in the bud for drawing in smoke-filled air and passing it through the system. Also defined within the petals of the housing are a plurality of intake openings through which cigarette smoke, as well as secondary smoke from the surrounding area may be drawn downwardly through the device. An electrically or battery powered fan means, positioned below a filtration and odor-treatment system, drives the smoke through the system which includes an electrostatic prefiltering bed followed by an activated charcoal bed, an H.E.P.A. filter and finally another activated charcoal bed containing an air freshening material.

Abstract: An air conditioning apparatus with an air cleaning function. In the apparatus, an electric dust collector is provided in the air passage on the rear side of a heat exchanger. A heater for self-cleaning is combined with a dust collector electrode of the electric dust collector. A heat shield plate is combined with the heater. Air flow resistance is not increased although the dust collector electrode is plane in shape. An increase of air flow resistance caused by the use of the heat shield plate is also suppressed.

Abstract: A vacuum cleaner having a reduced velocity chamber with a high velocity air inlet, an electric motor, a rotary mechanism driven by the motor for creating a vacuum in the chamber, an outlet for exhausting air from the chamber, which air flows in a selected path from the air inlet, through the chamber and out the air exhaust outlet and a disposable porous sheet filter layer in the chamber for removing large solid particles from the air. The vacuum cleaner also has an improved filter, wherein the improved filter includes a layer of material to remove very fine air particles and a layer of material to remove odors from the air.

Abstract: An improved disinfecting air filter that can be used to disinfect air or other gases. The invention can be advantageously used as a standalone to control microorganisms or used with a traditional HEPA filter to effectively control all microorganisms as well as dust particles. The device contains an iodine-donating filter disposed to dispense an effective quantity of iodine vapor into the gas or air stream to be filtered. The iodine laden air then passes through a porous filter of polyvinyl acetal polymer which material has an unusual affinity for iodine and effectively removes it leaving disinfected and iodine-free air or gas.

Abstract: The invention provides a filter assembly for use in a vacuum cleaner. The vacuum cleaner includes an airflow path (18), a dirt and dust collecting device arranged in the airflow path (18), a motor or fan unit (10) for causing air to flow along the airflow path (18). A first filter (12) is arranged immediately upstream of the motor or fan unit (10) and a second filter (14) is arranged downstream of the motor or fan unit (10), wherein the first and second filters (12, 14) are connected together so as to form the single filter assembly. The connection of the filters (12, 14) encourages the user of the vacuum cleaner to regularly maintain both filters (12, 14) thus improving the performance of the vacuum cleaner.

Abstract: An air cleaning apparatus, especially for cleaning of room air, includes an ionizing device (14) having a unipolar ion source formed by a corona discharge electrode, an electrostatic precipitator (12) connected to a high-voltage source (15) and having a flow-through passageway (18) for air to be cleaned and two groups of electrode elements (16, 17) disposed in the flow-through passageway, the electrode elements (16) of one group being interleaved with and spaced from the electrode elements (17) of the other group and arranged to be at a potential different from that of the said other group. The corona discharge electrode (21) is arranged such that the ions generated at the electrode can diffuse essentially freely away from the electrode and thereby diffuse substantially freely throughout the room in which the ionizing device (14) is positioned.

Abstract: An air-cleaning apparatus is mounted on a wall to collect particulates suspended in the air through electrical control. In the air-cleaning apparatus, a box is mounted on a wall to house therein a dust-collection unit and an air fan such as cross-flow fan for blowing air. The dust-collection unit collects the particulates suspended in the air by imparting a corona electric charge to these particulates, i.e., by rendering them an electrostatic charge. The box of the air-cleaning apparatus is provided with an air outlet in its lower section and also provided with a forward-protruding air duct in its upper section. The forward-protruding air duct is provided with an air inlet in its leading edge portion.

Abstract: A triboelectrostatic separation apparatus includes a mixing chamber having opposed first and second charging ports, a separator having a separation chamber, first and second electrodes, and a variable voltage source for applying respective positive and negative voltage potentials to the electrodes. First and second particle streams are delivered through the first and second charging ports resulting in the impingement of the particle streams upon each other within the mixing chamber, thus enhancing the electrostatic charging of the particles contained within the particle streams. The apparatus may also include a pre-separator having a pre-separation chamber, a charged particle collection chamber and a plurality of feed passageways providing fluid communication between the pre-separation and the charged particle collection chambers.

Abstract: An air cleaning system having a forced negative pressure generating function is provided for defining a space in a room for utilizing the space as a smoking area or the like in which contaminated air such as smoke is prevented from flowing out of the space and is cleaned. The air cleaning system having a forced negative pressure generating function has an air curtain producing unit having a blow-out port for producing air curtains to surround a predetermined space, an air sucking unit having a suction port open to the predetermined space defined by the air curtains for sucking air in the predetermined space, an air exhausting unit having an exhaust port open to the outside of the predetermined space for exhausting air sucked by the air sucking means to the outside of the predetermined space, an air cleaner unit interposed between the exhaust port and the suction port, and an air cleaner body supported by a plurality of stems for accommodating the components.

Abstract: Apparatus is disclosed for rapidly collecting aerosols containing solid particles and micro organisms, such as viruses and bacteria, from relatively large volumes of air and concentrating these particulates as samples in water. This apparatus operates under conditions conducive to preserving the integrity and viability of the collected micro organisms. Ambient air containing aerosols drawn into and through the collector's interior by an air mover, is mixed with very warm air saturated with moisture and then with cold air, to cause the resulting vapor mixture to become supersaturated. This supersaturated water vapor rapidly condenses onto the incoming aerosol particles to form droplets with particles at their centers. The airstream carrying these droplets enters a cloud of air ions produced by a corona generator or, alternately, by a radioactive source emitting alpha particles.

Abstract: The invention provides a vacuum cleaner (100) including an airflow path, dirt and dust collecting device arranged in the airflow path, a motor or fan unit (110) for causing air to flow along the airflow path and also arranged therein, a first filter (112) arranged immediately upstream of the motor or fan unit (110) and a second filter (114) arranged downstream of the motor or fan unit (110), wherein the arrangement is such that, when in use the dirt and dust collecting device are made accessible or removed for emptying or replacement, both filters (112, 114) are visible to the user. This arrangement encourages the user of the vacuum cleaner to regularly maintain both filters (112, 114), thus improving the performance of the vacuum cleaner (100).

Abstract: Disclosed is a chemical and biological air purifier. The air purifier has a housing having an inlet and an outlet both aligned on a longitudinal axis, a turbulence generator, one or more vacuum ultraviolet (UV) sources achieving a chemical purification and one or more germicidal ultraviolet (UV) sources achieving the biological purification. The turbulence generator is mounted within the housing downstream of the inlet and promotes a dispersion and mixing of air received through the inlet. The vacuum UV source is mounted within the housing downstream of the turbulence generator and breaks oxygen molecules into mono-atomic oxygen which then reacts with chemical contaminants present in the air and degrades them by successive oxidation to odorless and inoffensive byproducts. The turbulence generator reduces the production of ozone by increasing the contact between the mono-atomic oxygen and the chemical contaminants.

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: Apparatus for remediation of particulate matter and gaseous pollutants entrained in flue gases. The flue gases, having a pre-determined moisture content, are mixed with sorbent material and forced through an induct venturi equipped with a mixing impeller. Downstream, the reaction products are removed from the gas stream and collected for use as construction material. The vented gas stream is monitored for specific pollutants and the amount of sorbent material introduced into the system can be automated in response to reading obtained. Additionally, the gas stream can pass through a bag house or cyclone wherein the bags are impregnated with materials specific to the pollutants carried in the stream.

Abstract: A ceiling fan for cleaning air in a room wherein each blade of the ceiling fan has a cavity open to the top and bottom surfaces of each fan blade and a filter unit in each of the cavities but within the confines of the fan blade such that, when the ceiling fan is operated, the airflow created by the ceiling fan will be forced through the filter unit from the bottom surface through to the top surface, wherein the filter units can collect airborne particles.

Abstract: An integrated lamp air purification and cleansing system is disclosed which includes a lamp body which supports a lamp and contains an air purification system. The lamp body includes an air inlet for drawing in air and an air outlet for blowing out the air. An air purification system is enclosed in the lamp body for filtering and cleaning the air flow drawn in from the air inlet whereby the air flow blown out from the air outlet is filtered and purified. The air purification system includes an activated charcoal filter and an electrostatic filter for filtering particles from the air flow. The electrostatic filtering device further includes many elongated channels each surrounded by conductive channel walls which allow the air flow to pass through. Each of the elongated channels includes a discharging needle located in a center portion of the channel which induces an electrical discharge and ionization in the air flow passing through.

Abstract: An aerodynamic-electrostatic particulate collection system for high-efficiency collection of particulate debris generated in a machining area during machining of a workpiece, especially post-cure machining of a composite workpiece, that includes a vacuum subsystem for generating a localized, vacuum-induced aerodynamic fluid flow field in the machining area and a particulate charging, electric field generating subsystem integrated in combination with the workpiece and the vacuum subsystem for charging particulate debris generated during machining of the workpiece and for creating an electric field that directs the charged particulate debris into the localized, vacuum-induced aerodynamic fluid flow field. The vacuum subsystem includes a vacuum pump, a hose fluidically interconnected to the vacuum pump, and a nozzle fluidically connected to the hose distal the vacuum pump and having a configuration that defines the localized, vacuum-induced aerodynamic fluid flow field.

Abstract: An air purifier including a housing which has two air intake passages at two lateral sides and an induced-draft fan in an air accumulation chamber between the air intake passages, a plurality of air filters respectively mounted between the air accumulation chamber and the air intake passages, each air filter including two electrically insulative frames fastened together, and a plurality of metal wire gauze filters, and a high-voltage static electricity generator mounted inside the housing and connected to one metal wire gauze filter, the high-voltage static electricity generator providing high-voltage positive static electricity to one metal wire gauze filters, causing the other metal wire gauze filters to produce positive static electricity at one side and negative static electricity at an opposite side for catching dust from air passing through.

Abstract: Improved ionizing structure for ambient air treatment wherein the structure incorporates an ionizing needle directed in the direction of airflow; the needle is negatively charged to produce an electrostatic field, preferably pulsating, whereby to ionize air constituent molecules, lint, and other entrained constituents, allowing the latter simply to precipitate out of the air and fall to the ground or floor beneath; in such manner ambient air within a room enclosure, for example, is cleaned for maximizing occupant enjoyment as well as for health and other reasons.

Abstract: An automatic air cleaner has a case and a base; wherein the case has a central cavity provided with a number of receiving grooves defined by ribs disposed at both inner lateral walls of the central cavity for a dust collecting plate and a filter plate to be inserted therein. Dirty air pumped into the case body is cleaned in sequence, moving from the dust collecting plate having rectangular dust collecting members cooperating with electric discharge rods, the filter plate made up of non-woven fabric and provided with an odoriferous agent, and then an ozone tube whose generation of ozone contributes to the termination of bacteria existing in the air. Finally anion pins are adapted to electrify the dust left over in the air so that when the fresh air blown out of the through slots of the case by fans driven by motors, the dust will drop onto the ground. In addition, the dust collecting plate, filter plate, and ozone tube can be easily replaced or withdrawn for cleaning in maintenance.