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: The present disclosure provides apparatuses for collecting aerosol samples by ionizing an air sample at different degrees. An air flow is generated through a cavity in which at least one corona wire is disposed and electrically charged to form a corona therearound. At least one grounded sample collection plate is provided downstream of the at least one corona wire so that aerosol ions generated within the corona are deposited on the at least one grounded sample collection plate. A plurality of aerosol samples ionized to different degrees can be generated. The at least one corona wire may be perpendicular to the direction of the flow, or may be parallel to the direction of the flow. The apparatus can include a serial connection of a plurality of stages such that each stage is capable of generating at least one aerosol sample, and the air flow passes through the plurality of stages serially.

Abstract: A method for applying a moisture barrier to a precipitator of cardboard for a two-step electrofilter, wherein the precipitator includes at least two paper bands (5) that constitute electrode elements in the precipitator, which paper bands (5) are multiply wound around a center axis of the precipitator, wherein the paper bands (5) exhibit a thin plastic layer with a thickness of 5-50 micrometers on their lateral surfaces (4), and where proximate electrode elements are arranged at a distance from one another in the radial direction of the precipitator. The method is characterized in that edge parts (6) of the paper bands (5) have a moisture-resistant substance applied to them. The material for fabricating a precipitator of cardboard for a two-step electrofilter is also described.

Abstract: A method and system wherein the fluid stream from an object to be evacuated is filtered before it enters into a vacuum pump with a purity of equal to or greater than 99% and a particle size of 0.3 microns or less, with minimum pressure difference, is provided, thereby improving pump life cycle and process performance.

Abstract: A combination discharge reactor for decomposing waste gas is disclosed is disclosed to include a housing with a gas inlet and gas outlets, and multiple processing units mounted in the housing. Each processing unit includes a support structure consisting of brackets and support rods, a rod electrode mounted in the bracket, and a tubular electrode mounted in the brackets and surrounding the rod electrode.

Abstract: Disclosed herein is an electric precipitator including at least one high voltage electrode including a pair of film members made of a non-conductive material and attached to each other and an electrode layer disposed between the pair of film members, and at least one low voltage electrode disposed alternately with the at least one high voltage electrode such that that the at least one high voltage electrode and the at least one low voltage electrode are separated from each other. Support members made of an insulating member to maintain separation of the at least one high voltage electrode and the at least one low voltage electrode from each other are mounted on one of the at least one high voltage electrode and the at least one low voltage electrode.

Abstract: An electrostatic precipitator cell containing a collection assembly, a plurality of collection assembly ground plates disposed in the collection assembly, a plurality of banks disposed in the collection assembly, wherein each bank containing a collection assembly charge plate and a voltage isolator is described. Electrically isolating portions of an electrostatic precipitator cell results in reduced arcing and overall increases in cleaning efficiency. As air cleaner utilizing the electrostatic precipitator with isolated banks is also described.

Abstract: An air sterilizer that operates by electro-kinetic conversion of energy is provided. The sterilizer can have an electro-kinetic converter, rows of needles fastened along support plates, and neutralizing electrodes. The converter can have a rectangular frame with two armatures joined by electrically insulating transverse plates. The armatures can be provided on one of the margins with a row of rectangular notches, equally-spaced with a constant pitch. In the notches, the ion-generating electrodes can be introduced. On their opposed margin, the plates can be interleaved at the same pitch and with V-shaped openings where the neutralizing electrodes can be introduced. The electrodes can be affixed by insulating covers, in the shape of the letter U. Each cover can be elastically deformable. The power supply can derive from an impulse generator with sufficient voltage to form an intense electric field which can ionize surrounding air and create a plasma zone.

Abstract: An exhaust gas treatment device includes at least a first at least partially electrically conductive honeycomb body having a first front side and a first rear side, a second at least partially electrically conductive honeycomb body having a second front side and a second rear side, an intermediate space between the first honeycomb body and the second honeycomb body, a power supply for the formation of an electric potential between the first honeycomb body and the second honeycomb body, and a multiplicity of electrodes fastened to the first honeycomb body, extending beyond the first rear side over a first length into the intermediate space and positioned at a first distance from the second front side of the second honeycomb body. A method for treating motor vehicle exhaust gas containing particles and a motor vehicle are also provided.

Abstract: A honeycomb structure has a substantially circular-pillar-shape. The honeycomb structure includes at least one electrically conductive honeycomb unit, a first electrode, and a second electrode. The at least one electrically conductive honeycomb unit includes walls extending along a longitudinal direction of the at least one electrically conductive honeycomb unit to define a plurality of through holes. The first electrode is provided on an outer circumferential surface of the honeycomb structure. The second electrode is provided in a vicinity of a central axis of the honeycomb structure extending along the longitudinal direction.

Abstract: The invention relates to method and systems wherein the fluid stream from an object to be evacuated is filtered before it enters into vacuum pump with the maximum purity to the level of 99% and up to the particle size of 0.

Abstract: Disclosed herein is an electric precipitator including at least one high voltage electrode including a pair of film members made of a non-conductive material and attached to each other and an electrode layer disposed between the pair of film members, and at least one low voltage electrode disposed alternately with the at least one high voltage electrode such that that the at least one high voltage electrode and the at least one low voltage electrode are separated from each other. Support members made of an insulating member to maintain separation of the at least one high voltage electrode and the at least one low voltage electrode from each other are mounted on one of the at least one high voltage electrode and the at least one low voltage electrode.

Abstract: There is provided a flotage trapping device using electrostatic field. The flotage trapping device has a body including a power source portion and a boosting portion 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 a 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 connector 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: The present invention provides an exhaust gas purifying device comprising an electrically insulated hollow cylindrical case, a cylindrical outer circumferential electrode arranged on an inner wall of the hollow cylindrical case, a bar-shaped center electrode held on a center axis of the outer circumferential electrode, and a metallic hollow cylindrical body arranged between the outer circumferential electrode and the center electrode, wherein the metallic hollow cylindrical body is electrically insulated and has a plurality of holes to permit particulate matter to pass therethrough without being accumulated.

Abstract: An improved ventilating range hood includes a sheet metal collecting hood, vented to the outdoors; a variable speed, electronically controllable fan, mounted in such a way as to draw air from a cooking area and out through said vent of said collecting hood; a plurality of air quality sensors capable of detecting both comfort factors and the presence of hazardous substances in the air; an embedded control algorithm which examines the composite output of said discrete air quality sensors, as well as, the trend information and determines from said information an instantaneous ventilation requirement, and a control signal, derived from said algorithm to regulate the fan speed level such that every combination of discrete air quality sensor conditions will have a unique associated fan speed level based on said ventilation requirement. The air quality sensors may include sensors for temperature, humidity, carbon monoxide, smoke, etc.

Abstract: A damper arrangement is described which provides for selective separation of the insulator compartments from the main body of a wet electrostatic precipitator (WESP), permitting maintenance to be performed on the insulator in the compartment while process gas continues to flow through the WESP.

Abstract: The present invention provides a ballast circuit and method for fabricating the same for multi-electrode corona discharge arrays. The circuit includes a conductive plastic material and at least one corona electrode protruding from the conductive plastic material. The distance between the plastic material and the corona electrode varies and controls the electrical resistance and determines the voltage breakdown of the circuit. Additionally, a particle collection surface may preferably be located within the conductive plastic material or preferably be separated from the material depending on the circuit design and configuration.

Abstract: A mast electrode assembly for a wet electrostatic precipitator comprising a first and a second electrode section connected together via a connector assembly The connector assembly comprises an axial protrusion extending from an end of the first electrode section which is inserted into an axial bore formed in an end of the second electrode section

Abstract: An apparatus for separating exhaust particulates from an exhaust gas stream, comprising a ceramic honeycomb body (7) with ducts (3, 4, 5) which can be flowed through by exhaust gas and extend in the longitudinal direction of the honeycomb body, with the honeycomb body (7) being provided with electrodes for generating an electric field which are each oriented transversally to the axis of the ducts (3, 4, 5). It is provided in accordance with the invention that the electrodes are each formed by a group of ducts (4) in which an electric conductor (6) is introduced at least partly along their axial extension. It preferably concerns a metallic coating (6).

Abstract: Positive and negative electrode needles, an air-blowing outlet, and a protection cover for covering these electrode needles and the air-blowing outlet are attached to an electrode cartridge which is attached to a housing, and an air-blowing hole positioned in front of the air-blowing outlet in a concentric manner therewith, for blowing out air from the air-blowing outlet toward the outside, and two air-flowing-out holes positioned in a concentric manner with the respective positive and negative electrode needles, and respectively surrounding outer peripheries of respective tip end portions of respective electrode needles via respective gaps for flowing out the air are formed in the protection cover.

Abstract: A modular frame for use in air purification devices is described. In one aspect of the invention, a plurality of frame members are arranged in a linked stack to form a housing for components of an air purification device. The frame members are arranged to define a flow channel through which a fluid stream passes and to support components of the air purification device that receive the fluid stream. In another aspect of the invention, a plurality of rods are arranged to pass through the frame member stack. A first one of the rods serves as an electrical power source at a first potential and a second one of the rods serves as an electrical power source at a second potential. Electrical connectors are provided to electrically couple electrodes on selected components of the air purification device to their associated rods. In devices that utilize electrostatic filters, the electrodes that are connected to the rods may include the electrodes of the electrostatic filters.

Abstract: A gas treating device capable of electrically collecting dust and of decomposing odors and other matter by plasma includes a plasma generating device integrally incorporated into an ionization part in a casing. The ionization part has an ionization line and a columnar portion of a negative electrode member. The plasma generating device includes a discharge electrode which shares a counter electrode with the ionization line. During operation, dust of a relatively small size in room air is electrically charged by discharge between the ionization line and the counter electrode. An electrostatic filter entraps and collects the electrically charged dust. A plasma of low temperature is generated by streamer discharge between the discharge electrode and the counter electrode. Harmful substances and odorous substances in the room air are decomposed by an activated species contained in the generated low-temperature plasma.

Abstract: An air cleaner conductor system is provided according to an embodiment of the invention. The air cleaner conductor system includes an electrostatic precipitator assembly, a chassis including an electrostatic precipitator receptacle and a power supply, and two or more electrical contacts located in the electrostatic precipitator receptacle and coupled to the power supply. The two or more electrical contacts extend at least partially into the electrostatic precipitator receptacle. The electrostatic precipitator assembly comes into contact with the two or more electrical contacts when the electrostatic precipitator assembly is substantially fully inserted into position in the electrostatic precipitator receptacle.

Abstract: A frame for an electrostatic precipitator cell is provided according to an embodiment of the invention. The frame in one embodiment includes a first frame portion adapted to at least partially receive the electrostatic precipitator cell and a second frame portion adapted to at least partially receive the electrostatic precipitator cell. The second frame portion assembles to the first frame portion to form the frame. The frame includes one or more side portions, an open top end, and an open bottom end. The frame receives and holds the electrostatic precipitator cell.

Abstract: A flotage trapping device comprises at least one plus electrode and at least one minus electrode. The plus electrode and minus electrode are alternately disposed. The electrodes trap the flotage floating in the air. Another flotage trapping device comprises at least one electrode of a single polarity and a space ion generating device for generating ions of polarity opposite to that of the electrode so as to form an ion space around or adjacent said electrode. A flotage repelling device comprises at least one electrode of a single polarity, and a space ion generating device for generating ions of the same polarity as that of the electrode so as to form an ion space around or adjacent of the electrode.

Abstract: Embodiments of the present invention are directed to a method and apparatus for moving air using an air treatment apparatus, the air treatment apparatus preferably including at least one first electrode, at least one second electrode, and at least one third electrode, and at least a portion of the third electrode is positioned downstream of the second electrode. The air treatment apparatus includes a grill configured to be attached to the air treatment apparatus, and the grill is movable between a first position in which the grill covers the portion of the third electrode and a second position in which the portion of the third electrode is uncovered. The grill is attached to or detached from the housing when in the second position.

Abstract: A method of forming a modular collecting electrode for an electrostatic precipitator, including forming a plurality of horizontal collecting electrode sections, each section having vertical planar portions separated by vertical tubular portions, and wherein the method includes inserting interconnecting support elements into the tubular portions of adjacent collector electrode sections and compressing the interconnected electrode sections to form a rigid modular assembly. In one preferred embodiment, the method includes applying stiffening members across the ends of the planar portions of adjacent electrode sections for transmitting rapping forces through the assembled sections.

Abstract: An improved filter element for use in an electrostatic precipitation air cleaning device, the filter element including rod electrodes arranged through a stack of alternating fluted plastic sheets and plate electrodes. Successive plate electrodes are arranged to make contact with an alternating one or the other of the rod electrodes. The plate and rod electrodes may be composed of high impedance materials such as paper and plastic, respectively. An arrangement for removably inserting a filter element into an air cleaning device is provided. The arrangement also removably provides electrical connectivity between the filter element and the air cleaning device. The filter element can thus be readily removed and re-installed by a user.

Abstract: A discharge electrode for an electrostatic precipitator has a collar having two oppositely disposed arms extending radially therefrom, with each radially extending arm terminating in a number of tines at its free end. Each tine is pointed and is curved relative to a plane of the oppositely disposed radially extending arms. Adjacent tines of a pair of tines at the end of each arm are oppositely curved relative to the plane of the radially extending arms. The discharge electrode preferably is formed of a single sheet of metal in a single pressing. A number of discharge electrodes are securable to an elongate shaft along its length to form an electrode discharge assembly for an electrostatic precipitator. The discharge electrodes can be secured to the shaft by tack welding.

Abstract: This publication discloses an electrostatic filter construction, which includes electrodes connected to a first electrical potential, second electrodes, which are electrically insulated from the first electrodes, and an insulating material acting as a particle filter, which is located between the first and the second electrodes. According to the invention, in both of the electrodes the electrode material used is a material, such as activated carbon, which is permeable to a gas and which filters the gas, and which has a low electrical conductivity, and both electrodes are located essentially parallel to the direction of the airflow.

Abstract: An air purifier has a simply manufactured and assembled ionizer, which improves the charging efficiency for dust particles using multi-directional discharge and prevents electrical accidents. The air purifier includes an ionizer and a collector. The ionizer includes a first electrode and at least two second electrodes, the first electrode having at least two hollow, semi-cylindrically shaped electrodes, the at least two electrodes being connected successively and in parallel so that the first electrode has a corrugated shape, and the at least two second electrodes are positioned at inner spaces defined by the hollow semi-cylindrically shaped electrodes, respectively. The collector is electrically charged with a polarity opposite to a polarity of charged dust particles.

Abstract: An air purifier has a simply manufactured and assembled ionizer, which increases the charging efficiency for dust particles through maximally increased discharge spaces and prevents electrical accidents. The air purifier includes an ionizer and a collector. The ionizer includes two ground electrode units and at least one discharge electrode, the two ground electrode units each having one or more electrodes, each formed in a hollow semi-cylindrical shape, the two ground electrode units being joined to face each other, the at least one discharge electrode being placed in spaces formed between the hollow semi-cylindrically shaped electrodes of the joined ground electrode units, thus charging dust particles passing through the spaces between the hollow semi-cylindrically shaped electrodes. The collector is electrically charged with a polarity opposite to a polarity of the charged dust particles.

Abstract: A bow-reduced precipitator collector plate assembly and an appertaining method include a precipitator collector plate that contacts a spring-like stiffening element configured to be attached to a fixed anchor or an adjacent anchoring collector plate. The stiffening element is configured to apply a force in a direction normal to a primary plane, which is generally co-linear but opposite in direction of a direction of bowing, of the precipitator collecting plate.

Abstract: An electrostatic precipitator using substantially planar screens of similar charge positioned perpendicular to the gas flow direction. The screens have a similar charge of the same polarity, and particles flowing through the screens are charged, agglomerated and either collected on the screens or fall downwardly into collecting hoppers below the screens. The screens preferably have openings smaller than 3 millimeters and are spaced apart less than 10 millimeters. In an alternative embodiment, the screens have alternating polarities and are spaced about an inch or more apart to prevent sparkover.

Abstract: A precipitation tube bundle for wet electrostatic filters is provided. The precipitation tube bundle consists of a plurality of single-piece precipitation tubes which are held at a distance from each other by an upper support collar, a central guide ring and a lower guide ring. The application is advantageous in that the tube bundle can be produced simply and economically, individual tubes can be replaced and when an electrical breakdown occurs in one of the precipitation tubes, the adjacent tubes are not damaged.

Abstract: The invention relates to an electric filter which includes emission and separation systems, which are intended for separating particles from a gaseous, particle-containing medium passing through the electric filter, and a filter chamber (1) which surrounds the emission and separation systems and their peripheral devices, the filter chamber (1) having a top surface (2), a base structure (3), and a wall structure (4) provided with thermal insulation and sheet metal cladding. The base structure (3) is made of concrete or the like and includes at least one trough or hopper bottomed tank (5) for the separated particales, wall structure (4) is made of steel and attached to the base structure (3) with a substantially rigid joint (5). The wall structure (4), except for the rigid joint (6), is provided to allow thermal expansion and contraction.

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: An electronic dust collecting type air purifier which includes a dust collecting device, which includes a plurality of electrically insulative trays arranged in a stack, a plurality of filter beds made from metal wire coils and respectively mounted in the trays, and an anion generating apparatus having an input terminal connected to one filter bed to receive electrons from it and an output terminal for discharge of electricity into the air to produce anions for gathering dust, the filter beds, except the one which is connected to the anion generating apparatus, being connected to the grounding terminal.

Abstract: A simplified electronic air cleaner cell structure having a pair of spaced plastic side support members which provide the entire support for the ionizer elements and collector elements mounted therebetween. Portions of one of the side members are made of an electrically conductive material, and the high voltage ionizer and collector elements are mounted thereto, with electrical interconnections being made between those conductive portions and a power source.

Abstract: An electrostatic precipitator of the present invention is composed of a discharge section positioned in a casing inducing gas to be treated containing unwanted matters such as dust and miscellaneous bacteria from a gas feeding duct to a gas exhaust duct and arranged in a state of crossing with a passage of the gas to be treated, and dust collecting sections each having a gas permeable configuration installed in parallel with each other at a distance in front and in the rear with respect to the discharge section, wherein a high voltage application unit is provided in the discharge section, a dust collecting chamber is provided at the lower part of the dust collecting sections, the discharge section, the dust collecting sections, the high voltage application unit and the dust collecting chamber are provided in one frame as one body, and the electrostatic precipitator is arranged to be installed freely in a row through a mounting flange provided on the peripheral surface of the frame with respect to a passage of