Multiple Similar Elements Or Sections (e.g., Built Up, Etc.) Patents (Class 96/100)
  • Patent number: 10488056
    Abstract: A commercial cooking equipment exhaust hood system includes a hood structure including an inlet opening to an exhaust flow path through the hood. A filter unit is positioned along the exhaust flow path. An electrostatic precipitator unit is downstream of the filter unit. The electrostatic precipitator includes an ionizing section upstream of a collecting section. The ionizing section includes a plurality of ionizing flow paths having side profile patterns that vary in width between at least one wide section and at least one narrow section. The collecting section includes a plurality of collecting flow paths with side profile patterns of substantially uniform width and a repeating undulating side profile pattern. A UV light source may also be provided within the hood, with a controller operatively connected to control the UV light source via a dimmer to enable selective production various UV levels.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: November 26, 2019
    Assignee: ILLINOIS TOOL WORKS INC.
    Inventors: Russell Robison, Kui-Chiu Kwok
  • Publication number: 20140298995
    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.
    Type: Application
    Filed: January 13, 2014
    Publication date: October 9, 2014
    Inventor: Yadapalli Kondala Rao
  • Publication number: 20140174294
    Abstract: An electrostatic air conditioner having at least one ion emitting member (i.e., corona frame) and at least one ion collecting member (i.e., collecting cartridge) is provided. The corona frame and collecting cartridge are configured to have active and passive areas and be removable from the housing within which they are positioned. The passive areas provide additional spacing between the active area and the side walls of the housing, and provide several advantages over existing electrostatic air conditioners, e.g., eliminates barriers between active corona wires and the housing walls, which prevents any settling of chemically active or electrically active matter (vapor or particles) on such barriers and/or housing walls (due to air flow).
    Type: Application
    Filed: July 22, 2013
    Publication date: June 26, 2014
    Inventor: Igor Krichtafovitch
  • Patent number: 8657937
    Abstract: Each protrusion (42) of a first electrode (40) is formed to have a long plate-like shape extending across a plurality of grid holes (46) of the first electrode (40). Each grid hole (56) of a second electrode (50) is formed to have an elongate shape extending to conform to each corresponding one of the protrusions (42) of the first electrode (40). Protrusions (52) of the second electrode (50) are arranged in the longitudinal direction at end portions (54a) on the long sides of the respective grid holes (56) of the second electrode (50), so as to conform to the grid holes (46) of the first electrode (40).
    Type: Grant
    Filed: August 27, 2009
    Date of Patent: February 25, 2014
    Assignee: Daikin Industries, Ltd.
    Inventors: Kanji Motegi, Ryuuji Akiyama, Shunji Haruna, Toshio Tanaka
  • Patent number: 8608838
    Abstract: The invention provides an air purification system in form of tubing, by which particulates of various sizes in the air flow can be collected. The system includes an air inlet, an air outlet and a particulate removing unit located therebetween, the particulate removing unit including a tubing array of material having low dielectric constant, when an air flow passes through the system electrostatic effect is created between the air flow and the tubing material so as to remove the particulates entrained within the air flow. The invention also provides a method for removing particulates from air flow using the electrostatic effect created between the air flow and said material.
    Type: Grant
    Filed: January 14, 2011
    Date of Patent: December 17, 2013
    Assignee: Yau Lee Innovative Technology, Ltd.
    Inventors: Tin Cheung Wong, Yee Tak Leung
  • Publication number: 20130186270
    Abstract: Vane electrostatic precipitators preferably have the leading edges of the vanes directly opposite the discharge electrodes, and/or the distance between the discharge electrode and the leading edge of the vane electrode is less than the distance between the discharge electrodes improves the collection process. These designs improve collection efficiency of the vane electrostatic precipitators.
    Type: Application
    Filed: March 11, 2013
    Publication date: July 25, 2013
    Inventor: John P. Dunn
  • Publication number: 20130145932
    Abstract: An apparatus for reducing soot particles in exhaust gas, particularly of an internal combustion engine, includes first and second at least partially electrically conductive structures with an intermediate space therebetween, a high voltage source forming a potential between the first and second structures and at least one at least partially electrically conductive intermediate structure in the intermediate space receiving an intermediate potential. A method for treating the exhaust gas includes conducting exhaust gas from the first to the second structure and applying a high voltage at least temporarily between the first and second structures. At least part of the soot particles in the exhaust gas is ionized or agglomerated and deposited on the second structure. A high voltage between potentials of the first and second structures is applied at least temporarily to the intermediate structure. An electric field is influenced favorably and disruptions from undesirable voltage flashovers are reduced.
    Type: Application
    Filed: February 13, 2013
    Publication date: June 13, 2013
    Applicant: EMITEC GESELLSCHAFT FÜR EMISSIONSTECHNOLOGIE MBH
    Inventor: EMITEC GESELLSCHAFT FÜR EMISSIONSTECHNOLOGIE MBH
  • Patent number: 8419816
    Abstract: Provided is a gas isolation valve which separates reactive materials, principally gases, contained in a high temperature reactor from the surrounding atmosphere. The valve is of modular construction with each module having a gas providing section and a gas removal section. Any number of modules can be provided in series. A central chamber, open at each end gives unimpeded access to the high temperature reactor. It is through the central chamber that the product of the reactor is removed and harvested. In the case of Ilas invention the product is carbon nanotubes.
    Type: Grant
    Filed: March 21, 2006
    Date of Patent: April 16, 2013
    Assignee: Q-Flo Ltd.
    Inventors: Martin Pick, Stephen Cash
  • Publication number: 20120312169
    Abstract: The present invention is an air purification method and device. Due to the lower airflow resistance that the present invention induces, an exhaust fan or blower with motor of lower torque is adopted. Consequently, the whole air purification is operated at a lower noise level. Lower operational voltage is applicable for the high-voltage electrostatic precipitator device and provides a similar or superior performance and effectiveness for dust removal. The air purification device/system is designed with higher flexibility and of more compact in dimension and size. Dust is removed from the environment by a high voltage electrostatic precipitator. The airflow stream within a high-voltage electrostatic precipitator is such that the direction of the path of the airflow is changed at least twice.
    Type: Application
    Filed: June 6, 2012
    Publication date: December 13, 2012
    Inventors: Yiu Wai CHAN, Sui Chun Law, Yiu Ming Chan
  • Publication number: 20120312170
    Abstract: An electrostatic precipitator including a charger to charge dust particles in air and a collector to collect the dust particles. The collector includes a collector case including high-voltage electrodes, to which high-voltage is applied, low-voltage electrodes alternately stacked with the high-voltage electrodes so as to be grounded, and first electrode support elements to support the high-voltage and low-voltage electrodes with a distance therebetween. The first electrode support elements include electrode contact terminals to support extreme edge portions of the high-voltage and low-voltage electrodes. The high-voltage and low-voltage electrodes are formed of a conductive material, or a non-conductive material, the surface of which is subjected to conductive treatment. The electrode contact terminals for the high-voltage electrodes are formed of a semiconductive material.
    Type: Application
    Filed: June 4, 2012
    Publication date: December 13, 2012
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Hyong Soo NOH, Kochiyama Yasuhiko, So Young Yun
  • Patent number: 8101130
    Abstract: A gas ionizer includes a photocatalyst activated with an electric field to emit electrons. The photocatalyst is also illuminated with an ultraviolet light source. The ionized gas is passed through a chamber between the photocatalyst and the ultraviolet light source. The photocatalyst may be titanium oxide.
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: January 24, 2012
    Assignee: Applied Nanotech Holdings, Inc.
    Inventor: Richard Lee Fink
  • Publication number: 20110197768
    Abstract: Each protrusion (42) of a first electrode (40) is formed to have a long plate-like shape extending across a plurality of grid holes (46) of the first electrode (40). Each grid hole (56) of a second electrode (50) is formed to have an elongate shape extending to conform to each corresponding one of the protrusions (42) of the first electrode (40). Protrusions (52) of the second electrode (50) are arranged in the longitudinal direction at end portions (54a) on the long sides of the respective grid holes (56) of the second electrode (50), so as to conform to the grid holes (46) of the first electrode (40).
    Type: Application
    Filed: August 27, 2009
    Publication date: August 18, 2011
    Inventors: Kanji Motegi, Ryuuji Akiyama, Shunji Haruna, Toshio Tanaka
  • Patent number: 7824476
    Abstract: A tunnel fan with an electrostatic filter is disclosed. The tunnel fan includes: a cylindrical shaped tunnel fan; and an electrostatic filter including a pipe assembly, the pipe assembly including a plurality of pipes arranged in parallel to form a cylindrical shape, each pipe having an electrostatic induction means for causing tiny dust to be collected by an induction voltage, wherein the electrostatic filter is coupled to a front or a rear of the tunnel fan.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: November 2, 2010
    Inventor: Jong Seung Chung
  • Publication number: 20100269699
    Abstract: An electrostatic precipitator for removing a particulate material includes a housing having an internally formed air path communicating between an inlet for drawing polluted air containing particulate material and an air outlet for emitting clean air purified by removing the particulate material, an air stream generating means that generates an air stream, a discharging means that charges the particulate material, and a collection device provided in the air stream to collect the particulate material which has been charged by the discharging means. The collection device includes a collection belt including a flat wire belt defining a three-dimensional collection surface. The precipitator further includes a brush and vacuum assembly for removing the particulate material and reducing the risk of reentrainment in the air stream.
    Type: Application
    Filed: April 28, 2010
    Publication date: October 28, 2010
    Applicant: CAMBRIDGE INTERNATIONAL, INC.
    Inventor: Chetwyn JONES
  • Patent number: 7767005
    Abstract: An apparatus for filtering particulate matter from a gas. The apparatus includes at least one tube with a substantially axially located ionizer structure, and a fan for propelling the gas through the at least one tube. The ionizer structure includes a flat blade extending axially along at least a substantial part of the tube and having a saw tooth shape with a high number of sharp teeth placed regularly along the blade edges. The blade is twisted about its own longitudinal centerline to provide rotation for a gas stream flowing along the tube.
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: August 3, 2010
    Inventor: Roger A Gale
  • Patent number: 7674323
    Abstract: An apparatus for filtering particulate matter from a gas. The apparatus includes at least one tube with a substantially axially located ionizer structure, and a fan for propelling the gas through the at least one tube. The ionizer structure includes a flat blade extending axially along at least a substantial part of the tube and having a saw tooth shape with a high number of sharp teeth placed regularly along the blade edges. The blade is twisted about its own longitudinal centerline to provide rotation for a gas stream flowing along the tube.
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: March 9, 2010
    Inventor: Roger A. Gale
  • Publication number: 20100011960
    Abstract: The invention provides a filter for separating very small particles or organisms from the air or gas in which they are carried, comprising a filter mechanism and a duct, chamber or pipe to contain and transport the air or gas and to house the filter mechanism; the filter mechanism comprising: a particle charging means, a means to introduce charged or uncharged atomized droplets of liquids or reagents into the air or gas after the particle charging stage, and a capture means for collecting the atomized droplets and/or very small particles or organisms.
    Type: Application
    Filed: July 18, 2005
    Publication date: January 21, 2010
    Inventor: Colin Lawrence
  • Patent number: 7604004
    Abstract: An oxygen separator for separating oxygen from ambient air utilizing a vacuum swing adsorption process has a mass of less than 2.3 kg. A carrier is mountable on a person to support the oxygen separator for ambulatory use.
    Type: Grant
    Filed: April 5, 2006
    Date of Patent: October 20, 2009
    Assignee: Vbox Incorporated
    Inventors: Theodore W. Jagger, Nicholas P. Van Brunt, John A. Kivisto, Perry B. Lonnes
  • Publication number: 20090217820
    Abstract: A cleanable filter for particulate material, includes a zigzag pleated filter pack, spacers disposed between the pleats in the filter pack and a frame having an upper and lower part covering the respective upper and lower side of the filter pack that contains the ends of the fold lines and two lateral parts covering the opposite sides of the filter pack that contains the ends of the filter medium zigzag folded into a filter pack, the frame thereby leaving the opposite sides of the filter pack that contains alternate fold lines of the pleated filter pack, free for the passage of air. The filter medium in the filter pack includes a pleated sheet of polytetrafluorethylene and the spacers between the pleats consist of corrugated aluminum foils. An earthing element furthermore electrically connects the aluminum foils to each other and to an earth connection on the outside of the filter frame.
    Type: Application
    Filed: January 12, 2006
    Publication date: September 3, 2009
    Applicant: CAMFIL AB
    Inventor: Eckhard Neudeck
  • Patent number: 7459009
    Abstract: An apparatus for removing particulate matter from a gas stream containing particulate matter, the apparatus including: a mist-producing element that mixes a gas stream entering the apparatus with liquid droplets; and a down flow Wet Electrostatic Precipitator (WESP) pass section having ionizing electrodes that electrically charge the particulate matter and the intermixed liquid droplets, and collecting surfaces in the form of an array of polygonal tubes, wherein the collecting surfaces are under the influence of an electrical field to attract and remove electrically-charged particulate matter and intermixed liquid droplets from the gas stream. An embodiment utilizing two down-flow Wet Electrostatic Precipitator (WESP) sections (i.e.
    Type: Grant
    Filed: April 17, 2006
    Date of Patent: December 2, 2008
    Assignee: Eisenmann Corporation
    Inventors: Isaac Ray, Mark A. West, Boris Altshuler
  • Patent number: 7384456
    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.
    Type: Grant
    Filed: May 31, 2006
    Date of Patent: June 10, 2008
    Assignee: AirInSpace B.V.
    Inventor: Patrick Aubert
  • Publication number: 20080072759
    Abstract: The present invention relates to a filter device for separating particles from a gaseous fluid sucked in by a gas turbine, the filter device having a vertically situated tubular electric filter. Maintenance work on a gas turbine may thus be significantly reduced and, in addition, a higher gas turbine output may be achieved due to low pressure loss of the tubular electric filter.
    Type: Application
    Filed: September 27, 2006
    Publication date: March 27, 2008
    Inventors: Miroslav Podhorsky, Thomas Riepe, Timo Seppaelae
  • Patent number: 7332020
    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.
    Type: Grant
    Filed: June 22, 2004
    Date of Patent: February 19, 2008
    Assignee: Daikin Industries, Ltd.
    Inventors: Toshio Tanaka, Kanji Motegi, Kenkichi Kagawa
  • Patent number: 7121276
    Abstract: An oxygen separator for separating oxygen from ambient air utilizing a vacuum swing adsorption process has a mass of less than 2.3 kg. A carrier is mountable on a person to support the oxygen separator for ambulatory use.
    Type: Grant
    Filed: February 9, 2005
    Date of Patent: October 17, 2006
    Assignee: Vbox, Incorporated
    Inventors: Theodore W. Jagger, Nicholas P. Van Brunt, John A. Kivisto, Perry B. Lonnes
  • Patent number: 7090717
    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.
    Type: Grant
    Filed: June 4, 2003
    Date of Patent: August 15, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-Saeng Kim, Chan-Jung Park
  • Patent number: 7048780
    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.
    Type: Grant
    Filed: June 3, 2003
    Date of Patent: May 23, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-Saeng Kim, Chan-Jung Park
  • Patent number: 6958089
    Abstract: An electrostatic precipitator includes a frame, several parallel square metallic rods securely disposed in the frame, and several metallic boards positioned parallel in the frame for charges to be deposited on, and spacing elements; the metallic boards have through holes thereon, and the square metallic rods are passed through corresponding through holes of the metallic boards; the spacing elements are in the shape of a tube having a lengthwise extending gap, and they are positioned one on top of another around a whole length of the metallic rods for spacing the metallic boards equidistantly apart with; the spacing elements are flexible and resilient so as to tightly embrace the metallic rods when they are fitted around the rods.
    Type: Grant
    Filed: June 29, 2004
    Date of Patent: October 25, 2005
    Assignee: Hung Hsing Electric Co., Ltd.
    Inventor: Ping Huang
  • Patent number: 6951580
    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.
    Type: Grant
    Filed: April 13, 2004
    Date of Patent: October 4, 2005
    Assignee: NiSource Corporate Services Company
    Inventor: Gregory Ludwicki
  • Patent number: 6852149
    Abstract: An electrostatic precipitator includes several dividable supporting rods, which are passed through corresponding big holes, and tightly fitted in corresponding small holes of metallic boards so as to support the metallic boards equidistantly spaced apart in position. Each supporting rod is made of several connectable parts, each of which has an insertion end portion, and a hollow holding end portion. Each supporting rod is assembled by means of joining insertion end portions to adjacent hollow holding end portions, and is apart from the edges of corresponding big holes of the metallic boards. Thus, the metallic boards are firmly held in position by means of tops of hollow holding end portions of those connectable parts that are joined to small through holes thereof.
    Type: Grant
    Filed: June 3, 2003
    Date of Patent: February 8, 2005
    Assignee: Hung Hsing Electric Co., Ltd.
    Inventor: Ping Huang
  • Patent number: 6599349
    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.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: July 29, 2003
    Assignee: Steuler-Industriewerke GmbH
    Inventor: Jürgen Scharkowski
  • Patent number: 6579349
    Abstract: An electrostatic precipitator includes an upright hollow body having a lower smoke inlet and an upper smoke outlet, with a pair of spaced horizontal partitions formed in the hollow body between the inlet and outlet. A set of parallel ducts extends vertically between the partitions, and a pair of distributor frames is arranged in the hollow body, with one of the distributor frames disposed over the ducts and the other of the distributor frames disposed under the ducts. Between the distributor frames is stretched a plurality of wires that extend through respective ducts. Furthermore, each of the distributor frames is formed with a plurality of terminals to be electrically connected to one electrode of a DC high-voltage power supply, but the ducts are adapted to be electrically connected to the other electrode of the DC high-voltage power supply.
    Type: Grant
    Filed: April 8, 2002
    Date of Patent: June 17, 2003
    Inventors: Chein-Bang Ting, Min-Yi Chu
  • Patent number: 6576046
    Abstract: A modular two-stage electrostatic precipitator for extracting airborne particles includes individual ionizer/collector cell modules having integrated power supplies and diagnostic systems. The cell modules are adapted to be joined blindly to one another in end-to-end nested relation through nestable end plates and in a series circuit utilizing floating electrical connectors. The module end plates provide self-correction in misalignment during a blind connection and provide sealed end plate cavities for the power supply and electrical connections. The diagnostic system provides detection for any open system circuit and/or short circuit condition and allows for trouble shooting on an individual cell module basis.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: June 10, 2003
    Assignee: Fedders Corporation
    Inventors: Dean B. Pruette, Charles A. Rector, David R. Phelps
  • Patent number: 6454839
    Abstract: An electrofiltration apparatus is provided having at least one electrostatically charged polymeric film layer having surface structures. The film layers may be configured as a collection cell that has the structured film layer defining a plurality of ordered inlet openings through a face of the collection cell and corresponding air pathways, thereby forming an open, porous volume. The air pathways are defined by a plurality of flow channels formed by the structured film layers. The electrofiltration apparatus is coupled with an ionizer which actively induces charges onto the particles to be removed by the collection cell.
    Type: Grant
    Filed: October 19, 1999
    Date of Patent: September 24, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Joel K. Hagglund, Thomas I. Insley, Todd W. Johnson
  • Patent number: 6428610
    Abstract: The present invention is directed toward a filter media for a high efficiency particulate air (“HEPA”) filter including a multiplicity of adjacent electrostatically charged piles of nonwoven fabric. The invention further includes a method of making a HEPA filter.
    Type: Grant
    Filed: January 18, 2000
    Date of Patent: August 6, 2002
    Assignee: The University of Tennessee Research Corporation
    Inventors: Peter Tsai, Sanjiv R. Malkan
  • Patent number: 6368392
    Abstract: In a disclosed electric dust-collecting unit, needle electrodes face laterally against openings, so that a person in charge of replacement or maintenance/inspection of the electric dust-collecting unit can be prevented in safety from being injured on his fingers or body by needles. Therefore, this type of the electric dust-collecting unit can be applied in an air cleaner not only in offices but also in homes. In addition, this type of the electric dust-collecting unit does not employ a conventional box-pillar type needle support, so that its air flow path is not suppressed with a resultant remarkable decrease in a pressure loss, thus contributing to compacting of the electric dust-collecting unit and hence the air cleaner.
    Type: Grant
    Filed: May 30, 2000
    Date of Patent: April 9, 2002
    Assignee: O-Den Corporation
    Inventors: Shigemitsu Ohtake, Kiyomu Endo
  • Patent number: 6361589
    Abstract: A device is provided for cleaning air from charged particles in an air flow duct. The device includes at least one precipitator panel including one or more precipitator units that are arranged so that their inlets have a large extension relative to the cross-sectional area of the air flow duct and a relatively small extension in the direction of the air flow through the units. The precipitator panels include at least two electrode elements preferably connected to a high voltage source and located such that all air in the air flow duct passes through the respective electrode elements.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: March 26, 2002
    Assignee: Eurus Airtech AB
    Inventor: Andrzej Loreth
  • Publication number: 20020005116
    Abstract: An electrofiltration apparatus is provided having at least one electrostatically charged polymeric film layer having surface structures. The film layers may be configured as a collection cell that has the structured film layer defining a plurality of ordered inlet openings through a face of the collection cell and corresponding air pathways, thereby forming an open, porous volume. The air pathways are defined by a plurality of flow channels formed by the structured film layers. The electrofiltration apparatus is coupled with an ionizer which actively induces charges onto the particles to be removed by the collection cell.
    Type: Application
    Filed: April 2, 2001
    Publication date: January 17, 2002
    Applicant: 3M Innovative Properties Company
    Inventors: Joel K. Hagglund, Thomas I. Insley, Todd W. Johnson
  • Patent number: 6294003
    Abstract: A condensing wet electrostatic precipitator for cleaning hot gases is constructed of collection electrode modules which establish longitudinally extending collection electrodes and a cooling jacket, each collection electrode module having a configuration including at least one part-tubular section and a cooling fluid chamber integral with the part-tubular section for containing cooling medium for cooling the part-tubular section. In some arrangements, the collection electrode modules are spaced apart laterally to enable the passage of the hot gases through the collection electrodes in a direction transverse to the longitudinal direction in which the collecting electrodes extend.
    Type: Grant
    Filed: February 22, 2001
    Date of Patent: September 25, 2001
    Assignee: Croll Reynolds Clean Air Technologies, Inc.
    Inventor: Isaac Ray
  • Patent number: 6290757
    Abstract: A ceramic honeycomb nitrogen purification device is provided including a source gas, a set of gaseous nitrogen passages, a set of oxygen disposal passages, an electroded oxygen conducting ceramic membrane, an electrical power source, an oxygen sensor, and nitrogen purification control circuitry. The source gas includes gaseous nitrogen. The set of gaseous nitrogen passages defines respective source nitrogen input openings and purified nitrogen output openings. The set of oxygen disposal passages defines disposed oxygen output openings, wherein a plurality of the gaseous nitrogen passages are exclusively dedicated to individual ones of the oxygen disposal passages.
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: September 18, 2001
    Assignee: CeramPhysics, Inc.
    Inventor: William N. Lawless
  • Patent number: 6193788
    Abstract: An electric dust collecting apparatus includes at least one needle electrode for charging floating particles in air by generating a corona discharge around needle points; at least one collecting electrode provided on cell-liked arrangement corresponding to the needle electrodes, for attracting and collecting the charged floating particles by an electrostatic force; and at least one deflection electrode having a rectangularly hollow longitudinal structure having a front plate portion and side plate portions wherein the needle electrodes are fixed on the front plate portion, for applying a deflection force to the charged floating particles to move toward the collecting electrodes by a potential applied from the side plate portions, and wherein the at least one deflection electrode having the rectangularly hollow longitudinal structure is obtained by bending a profile plate punched up a sheet metal by a predetermined punch press process, accordingly, the plurality of deflection electrodes can be integratedly for
    Type: Grant
    Filed: March 6, 1998
    Date of Patent: February 27, 2001
    Assignee: Kabushiki Kaisya O-DEN
    Inventor: Kouzaburou Nojima
  • Patent number: 6193782
    Abstract: A condensing wet electrostatic precipitator is constructed of collection electrode modules which establishing collection electrodes and a cooling jacket, each collection electrode module having a configuration including at least one part-tubular section and a cooling fluid chamber integral with the part-tubular section for containing cooling medium for cooling the part-tubular section, the configuration of each collection electrode module being such that upon assembly of the collection electrode modules into an assembly of juxtaposed collection electrode modules the part-tubular sections are juxtaposed to establish at least one corresponding generally tubular collection electrode comprised of the juxtaposed part-tubular sections and the discrete cooling fluid chambers are juxtaposed to establish a corresponding cooling jacket comprised of the juxtaposed discrete cooling fluid chambers.
    Type: Grant
    Filed: March 30, 1999
    Date of Patent: February 27, 2001
    Assignee: Croll Reynolds Clean Air Technologies, Inc.
    Inventor: Isaac Ray
  • Patent number: 6117216
    Abstract: An electrostatic precipitator for purifying air from charged particles. The precipitator includes at least a pair of electrode elements (R and A) spaced apart by a gap distance (a). The electrode elements are moisture-proof. At least one of the electrode elements is composed of a high ohmic cellulose material and is coated with a thin moisture-proof layer.
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: September 12, 2000
    Assignee: Strainer LPB Aktiebolag
    Inventor: Andrzej Loreth
  • Patent number: 5951742
    Abstract: A process for the scrubbing of undesirable substances from an exhaust gas stream which comprises passing the stream through a hollow cathode.
    Type: Grant
    Filed: July 23, 1997
    Date of Patent: September 14, 1999
    Assignee: The BOC Group plc
    Inventors: Michael J. Thwaites, Stephen W. Kew
  • Patent number: 5925170
    Abstract: An electric dust-collection unit including needle electrodes for the purpose of charging particulates within the air by causing corona discharges around their tips, collector cells (collector electrodes) arranged in tubular shape corresponding to the needle electrodes for the purpose of attracting and collecting the charged particulates by static electricity, and deflecting electrodes which are arranged in such a way as to be inserted within the collector cells for the purpose of imparting a deflecting force on the charged particles in the direction of the collector cells. The deflecting electrodes being configured in the form of a hollow column including a forward plate section having a mounting hole for the purpose of fitting and retaining the needle electrode, and side plate sections facing the collector cell at a prescribed distance.
    Type: Grant
    Filed: April 18, 1997
    Date of Patent: July 20, 1999
    Assignee: Kabushiki Kaisya O-DEN
    Inventor: Kouzaburou Nojima
  • Patent number: 5922111
    Abstract: An electrostatic precipitator for removing fine particles from gas is described. The precipitator includes an array of dust collection pipes, each negatively charged and serving as an electrode. Each pipe has a pin-like positively charged discharge electrode centrally located within it. Mist-laden gas is caused to flow through the pipes and is electrostatically cleaned. A slit is formed in the pipes to permit some cleaned gas to be mixed with uncleaned gas and reintroduced into the pipes to reduce the density of the fine particles in the gas entering the pipes. The pipes may be vertically or horizontally arranged.
    Type: Grant
    Filed: June 5, 1996
    Date of Patent: July 13, 1999
    Assignee: Omi Kogyo Co., Ltd.
    Inventors: Takashi Omi, Takashi Tsuchiya
  • Patent number: 5787704
    Abstract: An ionization unit is placed in an engine exhaust system. The ionization unit comprises an inlet to a first chamber and an outlet from a second chamber. Within the first chamber there is located an anode mesh and a grid mesh adapted to place a negative charge upon particulate matter passing through the first chamber. Within the second chamber there is located an anode element positively charged to attract the negatively charged particulate matter. Relatively clean air is exhausted at the outlet.
    Type: Grant
    Filed: February 6, 1996
    Date of Patent: August 4, 1998
    Inventor: Humberto Alexander Cravero
  • Patent number: 5779769
    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.
    Type: Grant
    Filed: October 24, 1995
    Date of Patent: July 14, 1998
    Inventor: Pengming Jiang
  • Patent number: 5759240
    Abstract: A laminar flow electrostatic precipitator (200) is provided with a plurality of sandwich structure electrodes (100) alternatingly coupled to a respective one of a pair of output terminals (222, 224) of high voltage power supply (220). Each of the sandwich structure electrodes (100) includes a three layer electrode body (110, 110', 110") formed by a pair of plate members (112, 114) and a support structure (120, 120', 120") disposed between the pair of plate members for maintaining the plate members in a substantially flat contour. The spacing between the plurality of sandwich structure electrodes (100) and the velocity of gas flow there past is selected to achieve laminar flow and thereby maximize the particulate removal efficiency of the precipitator (200).
    Type: Grant
    Filed: January 28, 1997
    Date of Patent: June 2, 1998
    Assignee: Environmental Elements Corp.
    Inventor: Andrew R. Becker
  • Patent number: 5725638
    Abstract: A modular dust collection plate assembly (10) for use in an electrostatic precipitator is provided. The dust collection plate assembly (10) includes at least one panel member (100) and at least one waveform member (200) releasably coupled together. The panel member (100) is characterized by a substantially planar contour, having first and second faces on opposing sides thereof which are commonly bounded laterally by a pair of lateral edge portions (110, 110) extending in a longitudinal direction. The waveform member (200) also extends in the longitudinal direction and is characterized by a predetermined curvilinear cross-sectional contour that enables the waveform member (200) to disrupt at least a portion of the gaseous flow that would pass across it during operation in an electrostatic precipitator.
    Type: Grant
    Filed: November 21, 1996
    Date of Patent: March 10, 1998
    Assignee: Environmental Elements Corp.
    Inventors: Steven R. Cross, Stuart J. Pass
  • Patent number: 5484473
    Abstract: A two-stage electrostatic filter is provided for air recirculation units. The filter includes at least one ionization stage (100) formed by parallel facing walls, in which a high-potential electrode (50) is located, and at least one precipitation stage (200) formed by parallel walls of negative potential in relation to the ionization stage. The ionization and precipitation stages-include at least one inverted U-shaped cathode (10), the opposite ends of which are mechanically and electrically integral with a transverse supporting section (20) and within which is provided at least one baffle (10b) extending parallel to outer arms (10a) of the U-shaped cathode, but with a height lower than that of the arms. The cathode (10) cooperates with a U-shaped anode (30; 1030) counterposed thereto and rendered mechanically integral by insulated supports (40). There are also provided further cathodes (110b; 2110b) for the modular expansion of the filter in the direction of its width.
    Type: Grant
    Filed: July 19, 1994
    Date of Patent: January 16, 1996
    Inventor: Luigi Bontempi