Serially Arranged Ionizing And Collecting Or Agglomerating Fields Patents (Class 96/77)
  • Patent number: 9846301
    Abstract: A dust collector includes a casing, a fan, a filtering element, an electric field generator and an electrostatic precipitator. The casing includes an inlet, an outlet and a channel. The channel is arranged between the inlet and the outlet. An ambient airflow is introduced into the channel through the inlet by the fan. Moreover, portions of suspended particles in the airflow are filtered off by the filtering element. The electric field generator generates an electric field. The suspended particles passing through the electric field generator have a first electrical polarity. The electrostatic precipitator has a second electrical polarity, wherein the first electrical polarity and the second electrical polarity are opposite. The suspended particles with the first electrical polarity are adsorbed by the electrostatic precipitator.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: December 19, 2017
    Assignee: Delta Electronics, Inc.
    Inventor: Bo-Song Lin
  • Patent number: 9776206
    Abstract: A method for depositing high aspect ratio molecular structures (HARMS), which method comprises applying a force upon an aerosol comprising one or more HARM-structures, which force moves one or more HARM-structures based on one or more physical features and/or properties towards one or more predetermined locations for depositing one or more HARM-structures in a pattern by means of an applied force.
    Type: Grant
    Filed: January 2, 2015
    Date of Patent: October 3, 2017
    Assignee: CANATU OY
    Inventors: David P. Brown, Albert G. Nasibulin, Esko I. Kauppinen, David Gonzales
  • Patent number: 9028588
    Abstract: Disclosed is a filtration system and method that uses a corona discharge grid and a series of electrostatic grids to filter ambient particles. The filtration system eliminates, or greatly reduces, the pressure drop across the associated filter media.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: May 12, 2015
    Inventor: Donald H. Hess
  • Publication number: 20150075379
    Abstract: A filtration assembly (1), which comprises an enclosure (2) which defines inside it a duct (3) for the passage of a fluid which carries pollutant particles (A) to be removed. At a first transverse cross-section of the duct (3) at least one perforated conducting grille (4) is provided, which is kept at a negative electrical potential, so as to emit into the duct (3) electrons which can bond to the pollutant particles (A), consequently giving them a negative electrical charge. Inside the duct (3), downstream of the grille (4), at least one accumulation plate (5) is provided, kept at a positive electrical voltage, for collecting the pollutant particles (A) charged electrically negatively by the electrons emitted by the grille (4).
    Type: Application
    Filed: April 13, 2012
    Publication date: March 19, 2015
    Applicant: Tecnologica S.A.S. di Vanella Salvatore & C.
    Inventor: Simone Vanella
  • Patent number: 8961659
    Abstract: An electrically enhanced air filtration system is disclosed which uses rear fiber charging is disclosed. In particular, a fibrous filter may be placed in an upstream position within the system with one or more ionization arrays positioned downstream or to the rear of the fibrous filter in terms of airflow direction. The fibrous filter may include a grounded side and fiber side with the grounded side being upstream of the fiber side. The ionization array may include a plurality of electrodes each extending unidirectionally toward the fibrous filter.
    Type: Grant
    Filed: October 20, 2009
    Date of Patent: February 24, 2015
    Assignee: Carrier Corporation
    Inventor: Peter J. McKinney
  • Patent number: 8747527
    Abstract: A method for converting soot particles of an exhaust gas includes providing at least nitrogen dioxide or oxygen in the exhaust gas, ionizing soot particles with an electric field, depositing electrically charged soot particles on inner channel walls of at least one surface precipitator, and bringing at least nitrogen dioxide or oxygen into contact with the deposited soot particles on the inner channel walls of the at least one surface precipitator. A device for carrying out the method includes at least one surface precipitator having a plurality of channels through which the exhaust gas can flow and extending between an inlet region and an outlet region, and at least one deposit inhibitor for electrically charged soot particles provided in at least part of the inlet region, especially allowing the soot particles to be evenly deposited and the surface precipitator to be continuously regenerated.
    Type: Grant
    Filed: March 14, 2012
    Date of Patent: June 10, 2014
    Assignee: Emitec Gesellschaft fuer Emissionstechnologie mbH
    Inventors: Wolfgang Maus, Peter Hirth, Rolf Brueck
  • Patent number: 8673068
    Abstract: This device for inactivating and finely filtering viruses and microorganisms in a flow of air is intended for cleaning air or gas. The device includes a high voltage power supply (4) and the following components arranged in series in the direction of flow: a unit (1) for pre-treating a flow of air, a two-section inactivation chamber (2) and a precipitator (3). The pre-treating unit (1) consists of oppositely charged conductive filtering elements (7, 7?). The first conductive filtering element (7) in the direction of flow is in the form of a cylindrical electrode (6) and a plate (9) which is made of a current conductive, highly porous material and is positioned at a distance from the free end face of the cylindrical electrode (6). A needle electrode (8), electrically associated with the plate (9), is adjacent to said plate.
    Type: Grant
    Filed: September 18, 2008
    Date of Patent: March 18, 2014
    Inventor: Alexei Mikhailovich Volodin
  • 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: 8641808
    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: Grant
    Filed: February 13, 2013
    Date of Patent: February 4, 2014
    Assignee: EMITEC Gesellschaft fuer Emissionstechnologie mbH
    Inventors: Rolf Brück, Christian Vorsmann, Jan Hodgson
  • Patent number: 8500873
    Abstract: A waste-gas cleaning system for cleaning aerosol-laden gases or atmospheres includes an inlet configured to intake raw gas, an outlet configured to discharge clean gas and at least one assembly including an ionization section and a downstream central collection section disposed centrally with respect to a channel axis. The ionization section includes at least one level at a right angle to the channel axis. The at least one assembly includes at least two substantially identical ionization stages disposed in a plane and arranged uniformly about the channel axis and configured to conduct a gas flow radially, with respect to the channel axis, inward therethrough into the downstream central collection section so as to be similarly diverted such that a flow profile over an inside cross section in the downstream central collection section is not inclined with respect to the channel axis in the course of the gas flow.
    Type: Grant
    Filed: August 20, 2008
    Date of Patent: August 6, 2013
    Assignee: Karlsruher Institut fuer Technologie
    Inventors: Hanns-Rudolf Paur, Andrei Bologa, Klaus Woletz
  • Patent number: 8475562
    Abstract: A gas purification apparatus capable of removing fine particles of substantially any size without lowering the efficiency of gas supply. A loader module of a substrate processing apparatus includes a fan filter unit for producing a downward flow of atmospheric air in the internal space of a transfer chamber. The fan filter unit includes a fan for generating an atmospheric air flow, a filter of mesh structure for trapping and removing particles mixed in the atmospheric air flow, an irradiation heater disposed between the fan and the filter, and a high temperature part disposed in the atmospheric air flow and higher in temperature than the filter.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: July 2, 2013
    Assignee: Tokyo Electron Limited
    Inventor: Tsuyoshi Moriya
  • Patent number: 8454733
    Abstract: An air handling device (10) includes an air flow path (13) in which a charge section (20) for charging dust in an air to be handled, and a precipitator (30) for collecting the charged dust are placed. The charge section (20) includes a discharge electrode (25) and a counter electrode (26) to perform diffusion charging. A diffusion space (13a) is provided at a location between the charge section (20) and the precipitator (30).
    Type: Grant
    Filed: October 8, 2008
    Date of Patent: June 4, 2013
    Assignee: Daikin Industries, Ltd.
    Inventors: Toshio Tanaka, Shunji Haruna, Kanji Motegi, Ryuji Akiyama
  • Patent number: 8454734
    Abstract: The present invention relates to a charging device having a charge section (20) for charging a floating particle in an air to be handled, and an air handling device (an air cleaning device) having the charging device. The charge section (20) is constituted by a first charge section (20a) adopting an impact charging technique and a second charge section (20b) adopting a diffusion charging technique. With this structure, charging and collection of dust can be accomplished only in the casing of the device, and therefore, an increase in size of the device can be avoided.
    Type: Grant
    Filed: October 8, 2008
    Date of Patent: June 4, 2013
    Assignee: Daikin Industries, Ltd.
    Inventors: Shunji Haruna, Toshio Tanaka, Kanji Motegi, Ryuji Akiyama
  • Patent number: 8409328
    Abstract: A substrate transfer device includes an atmosphere introduction unit and an atmosphere exhaust unit provided at a top and a bottom portion of a main body of the device, respectively; and a substrate transfer mechanism provided between the atmosphere introduction unit and the atmosphere exhaust unit. The substrate transfer device further includes a downward flow forming unit provided, adjacent to the atmosphere introduction unit, to allow an atmosphere to be introduced through the atmosphere introduction unit and to downwardly flow through the substrate transfer mechanism and be exhausted through the atmosphere exhaust unit; and a gas ionizing unit for ionizing the atmosphere and a particle collecting unit for collecting particles included in the atmosphere, the gas ionizing unit and the particle collecting unit being sequentially provided in the direction in which the atmosphere downwardly flows, between the downward flow forming unit and the substrate transfer mechanism.
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: April 2, 2013
    Assignee: Tokyo Electron Limited
    Inventors: Jun Yamawaku, Junji Oikawa, Hiroyuki Nakayama
  • Patent number: 8398746
    Abstract: A small area electrostatic aerosol collector includes a collector housing, an inlet nozzle that extends from the housing and an exit port that provides an exit for air to flow back out of the housing. A pumping arrangement pulls air into the housing through the inlet nozzle. The sampled air is moved through ductwork such that particulates are collected on a substrate and the air is evacuated through the exit port after collection. The collector includes a charging device positioned within the ductwork to create an electric field defining a charging point that the air passes through between the inlet nozzle and the substrate. The substrate is held at a neutral or opposite charge relative to the electric field created by the charging device. Particulates are collected on the sample substrate by containing the aerosol in a small area and by forcing the aerosol to flow near the substrate.
    Type: Grant
    Filed: August 18, 2011
    Date of Patent: March 19, 2013
    Assignee: Battelle Memorial Institute
    Inventors: Rodney S. Black, Edgar Fogelman, Kevin T. Hommema
  • Patent number: 8361193
    Abstract: A system and method is provided for electrostatic air filtering in automotive vehicles, such as electric and hybrid electric vehicles. The system includes an electrical distribution system and an electrostatic filtering system having discharge electrodes and an accumulation electrode. The distribution system is in high-voltage electrical communication with the filtering system as well as an electric motor and a high-voltage energy storage device in the vehicle. In operation, the distribution system distributes high-voltage electric power to the filtering system. The filtering system receives the high-voltage electric power to generate a high-voltage electrostatic potential between the accumulation electrode and the discharge electrodes to remove particulates from air flowing through a region of the electrostatic filtering system.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: January 29, 2013
    Assignee: Ford Global Technologies, LLC
    Inventors: William Paul Perkins, Renata Michaela Arsenault, Jimmy H. Kapadia, Steven A. Daleiden, Alan McDonald, Richard Michael Isaacs, Allen Dennis Dobryden, Matthew Fleming
  • Publication number: 20130008315
    Abstract: A system for energy and particle extraction from an exhaust stream containing entrained particles, the system including an ionizer, a downstream collector, and an electrical couple. The ionizer is configured to charge the particles within the exhaust stream to a first charge polarity. The downstream collector is disposed downstream from the ionizer within the exhaust stream, and is configured to collect the charged particles. The electrical couple is configured to electrically couple a load between the ionizer and the downstream collector, wherein the load converts energy of the exhaust stream into electric power.
    Type: Application
    Filed: July 5, 2012
    Publication date: January 10, 2013
    Inventors: DAWN WHITE, RANDY C. STEVENSON
  • Patent number: 8236094
    Abstract: The present invention provides an exhaust gas purifying device including 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.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: August 7, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masaru Kakinohana, Hirohito Hirata, Akira Mizuno
  • Patent number: 8157901
    Abstract: An apparatus for purifying air, in particular for ventilation and air-conditioning systems, has an air filter (11), which is inserted in an air channel (10) or in a filter wall for collecting dust. A dust agglomerator (12) with a DC voltage field is connected directly upstream of the air filter (11). In conventional filters, the efficiency is increased to such an extent that the dust throughput can be approximately halved. In addition, the initial efficiency is only insignificantly reduced during the operating time.
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: April 17, 2012
    Assignee: Lufttechnik+Metallbau AG
    Inventors: Kurt Tiefenauer, Theodor Ernst, Beat Ernst
  • Publication number: 20120085234
    Abstract: Disclosed is a filtration system and method that uses a corona discharge grid and a series of electrostatic grids to filter ambient particles. The filtration system eliminates, or greatly reduces, the pressure drop across the associated filter media.
    Type: Application
    Filed: September 15, 2011
    Publication date: April 12, 2012
    Inventor: Donald H. Hess
  • Patent number: 8080094
    Abstract: An electrically stimulated air filter apparatus for removing particles from an air stream includes a housing maintaining an ionizer electrode and electrically induced electrodes for producing electrical fields that interact with particles in an air stream passing through the housing to create clusters of the particles, and an electrically induced filter for collecting and separating the clusters of the particles from the air stream passing through the housing.
    Type: Grant
    Filed: January 22, 2007
    Date of Patent: December 20, 2011
    Assignee: Y2 Ultra-Filter, Inc.
    Inventor: Mark Vanderginst
  • Patent number: 8049426
    Abstract: An electrostatic fluid accelerator includes an electrode array comprising an array of corona discharge electrodes and an array of accelerating electrodes for moving a fluid. A detector is configured to sense a constituent component of the fluid. A control circuit supplies power to the electrode array and operates the electrostatic fluid accelerator in response to an output from the detector.
    Type: Grant
    Filed: August 8, 2008
    Date of Patent: November 1, 2011
    Assignee: Tessera, Inc.
    Inventors: Igor A. Krichtafovitch, Jacob L. Oharah, Volodymyr A. Bibikov, Christopher A. Martin, Vladimir L. Gorobets, Maciej R. Ziomkowski, Terence Tak-Shing Tam
  • Patent number: 8043412
    Abstract: A portable high air volume electrostatic collection precipitator for analyzing air is provided which is a relatively small, self-contained device. The device has a collection electrode adapted to carry a variety of collecting media. An air intake is provided such that air to be analyzed flows through an ionization section with a transversely positioned ionization wire to ionize analytes in the air, and then flows over the collection electrode where ionized analytes are collected. Air flow is maintained at but below turbulent flow, Ionizable constituents in the air are ionized, attracted to the collection electrode, and precipitated in the selected medium which can be removed for analysis.
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: October 25, 2011
    Assignee: Savannah River Nuclear Solutions, LLC
    Inventor: Duane C. Carlson
  • Patent number: 8002876
    Abstract: The invention relates to an electrostatic filter method and electrostatic filter for separating particles from industrial waste gases, wherein an optimal electric charging or ionization in the ionization zone are performed in a high-voltage zone and its unchanged ducts with one high-voltage supply source to ensure the subsequent particle separation in the separation zone at sufficient field strength which requires minimal energy input.
    Type: Grant
    Filed: January 9, 2006
    Date of Patent: August 23, 2011
    Assignee: Balcke-Durr GmbH
    Inventors: Werner Jakob Frank, Helga Frank, legal representative
  • Patent number: 7942952
    Abstract: In an electrostatic precipitator for filtering particulate matter from a gas, a fan (10) draws the gas (5) through an ioniser section (7) and a collector section (6). Ioniser blades (3) with sawtooth spikes (8) create a corona discharge (4) when charged to a high voltage, so that gas-borne particles are charged when passing through the corona area. The collector section (6) consists of a set of metallic plates (1, 2) of which every other plate (1) is connected to ground, while the remaining plates (2) receive a charge by induction from the ioniser blades (3), and act as repeller plates, pushing charged particles in the gas flow (5) over to the grounded plates (1).
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: May 17, 2011
    Inventor: Roger Gale
  • Patent number: 7931734
    Abstract: Embodiments of a method for selecting particles, such as based on their morphology, is disclosed. In a particular example, the particles are charged and acquire different amounts of charge, or have different charge distributions, based on their morphology. The particles are then sorted based on their flow properties. In a specific example, the particles are sorted using a differential mobility analyzer, which sorts particles, at least in part, based on their electrical mobility. Given a population of particles with similar electrical mobilities, the disclosed process can be used to sort particles based on the net charge carried by the particle, and thus, given the relationship between charge and morphology, separate the particles based on their morphology.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: April 26, 2011
    Assignee: Board of Regents of the Nevada System of Higher Education, on behalf of the Desert Research Institute
    Inventors: Hans Moosmüller, Rajan K. Chakrabarty, W. Patrick Arnott
  • Patent number: 7927401
    Abstract: A device for reducing the number of particles in the exhaust gas of an internal combustion engine includes at least two structures through which an exhaust gas can flow, initially through a first structure and then through a second structure during operation. An electrical potential difference can be generated between the structures. In this way, the exhaust gas downstream of the second structure has fewer particles, averaged over time, than the exhaust gas upstream of the first structure. In addition, the particles downstream of the second structure have a larger mean diameter than those upstream of the first structure, so that it is possible to reduce emissions, in particular of fine dust, in the exhaust gas of internal combustion engines. A method for reducing the number of particles in the exhaust gas of an internal combustion engine, is also provided.
    Type: Grant
    Filed: July 14, 2008
    Date of Patent: April 19, 2011
    Assignee: EMITEC Gesellschaft fuer Emissionstechnologie mbH
    Inventor: Rolf Brück
  • Patent number: 7909918
    Abstract: An intense field dielectric air filtration system includes a perimeter frame for wall or ceiling mounting at the inlet of a return air duct for an air conditioning apparatus. A door including a grille disposed thereon is mounted for movement on the frame between working and non-working positions for access to an air filter unit, a pre-filter unit and an intense field particle charging unit. Contacts on the filter unit and the field charging unit engage cooperating contacts on an enclosure mounted on the frame when the door is closed to supply electrical power. An interlock is provided to interrupt power when the door is moved to an open position or the grille is removed. A control system disposed in the enclosure includes user control features accessible when the door is in an open position. An alternate embodiment includes a support frame for positioning the filtration system in ductwork or the like other than a return air inlet.
    Type: Grant
    Filed: August 15, 2007
    Date of Patent: March 22, 2011
    Assignee: Trane International, Inc.
    Inventors: Larry S. Bias, Kristin Lyn Schaefer, Shannon L. Smith, John Mark Hagan, Mark David Woodruff, Daniel Joseph Mitchell, Cassius J. Mullen, Timothy H. Cauley, Robert Beasley
  • Patent number: 7857892
    Abstract: The disclosure relates to an air pollution sensor system incorporated in an enclosure, the enclosure including an air handling system inside an air duct, the air duct enabling a communication between air inside the enclosure and air outside the enclosure. The air duct including an air inlet for receiving air and an air outlet for releasing handled air inside the enclosure. The air pollution sensor system includes at least one ultra fine particle sensor capable of sensing particles with a diameter in a range of approximately 5-2500 nm, preferably in a range of approximately 5-1000 nm and more preferably in a range of approximately 5-500 nm inside the enclosure and providing a pollution information signal in response to the sensing of the particles. The disclosure further relates to various types of ultra fine particle sensors and air handling systems.
    Type: Grant
    Filed: August 10, 2005
    Date of Patent: December 28, 2010
    Assignee: Koninklijke Philips Electronics N.V.
    Inventor: Johan Marra
  • Patent number: 7846241
    Abstract: A particulate matter detecting apparatus (100) includes a detecting apparatus main body having a cavity (2) that is formed through the detecting apparatus main body, a particle charging section (3) that can charge particulate matter that has entered the cavity through an inflow-side end (6) of the cavity, a collection section (4) that can collect the particulate matter charged by the particle charging section (3) and measure the amount of the particulate matter, and an ion wind generation section (5) that allows the particulate matter charged by the particle charging section (3) to flow toward an outflow-side end (7) of the cavity, the particle charging section, the collection section (4), and the ion wind generation section (5) being provided inside the cavity in this order from the inflow-side end (6). The particulate matter detecting apparatus has a reduced size, shows only a small measurement error, and can be produced inexpensively.
    Type: Grant
    Filed: August 18, 2009
    Date of Patent: December 7, 2010
    Assignee: NGK Insulators, Ltd.
    Inventors: Atsuo Kondou, Takeshi Sakuma, Yasumasa Fujioka
  • Patent number: 7815719
    Abstract: A system and method for ionization detection in electrically enhanced air filtration systems is described. One embodiment includes a system for electrically enhanced air filtration, the system including an electrically enhanced filter having a filter and an ionizing electrode disposed on an upstream side of the filter; a control device connected to the electrically enhanced filter, wherein the control device can control the electrically enhanced filter; and an ionization detector, wherein the ionization detector is adjacent to the electrically enhanced filter and wherein the ionization detector is connected to the control device.
    Type: Grant
    Filed: December 26, 2007
    Date of Patent: October 19, 2010
    Assignee: StrionAir, Inc.
    Inventors: Peter J. McKinney, Adam J. Cohen
  • Patent number: 7815720
    Abstract: A dual-filter electrically enhanced air-filtration apparatus and method are described. One embodiment includes an upstream electrically enhanced filter; a downstream electrically enhanced filter; a first control electrode adjacent to an upstream side of the upstream electrically enhanced filter; a second control electrode adjacent to a downstream side of the downstream electrically enhanced filter; and an ionizing electrode disposed between the upstream and downstream electrically enhanced filters, the ionizing electrode having an electrical potential with respect to the first and second control electrodes. Optional field electrodes may be included to enhance the electric fields associated with the upstream and downstream electrically enhanced filters.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: October 19, 2010
    Assignee: StrionAir, Inc.
    Inventor: Peter J. McKinney
  • Patent number: 7758316
    Abstract: A method and apparatus are provided for pumping a gas. The method includes the steps of ionizing the gas, separating the ionized gas into groups of positive and negative ions using positive and negative electric fields and separately pulling the groups of positive and negative ions along a channel using the negative and positive electric fields.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: July 20, 2010
    Assignee: Honeywell International Inc.
    Inventors: Ulrich Bonne, Paul Bauhahn
  • Publication number: 20100126343
    Abstract: An electrically enhanced air filter apparatus for filtering particles from moving air is described. The apparatus includes a filter arranged so particles approach the filter a filter speed and pass through an ionizer at an ionizer speed, and is configured so the filter speed is less than the ionizer speed. The ionizer is arranged to guide the moving air in an ionizer airflow direction and generates an ionizing electric field having ionizer field direction substantially perpendicular to the ionizer airflow direction.
    Type: Application
    Filed: November 25, 2008
    Publication date: May 27, 2010
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: Donald John Enzinna, Ilya Reyzin
  • Publication number: 20100075317
    Abstract: An airborne particulate sampling device is disclosed. The device includes a conduit whose interior allows the flow of air through the device. The conduit, or at least its surface, is a conductor. The device also includes an electrode with a sharp tip or edge on or near the output side of the conduit. An electrically conducting particle collector outside the conduit is positioned so that a surface is perpendicular or approximately perpendicular to the axis of the funnel. A fan or other blower forces air through the funnel. A power supply imparts an electrostatic potential difference between the electrode, on the one hand, and the holder and particle collector, on the other hand. The electrostatic potential difference produces a corona field in the air in the vicinity of the electrode's sharp tip. The corona field imparts a charge to airborne particles.
    Type: Application
    Filed: July 21, 2009
    Publication date: March 25, 2010
    Inventors: Raymond W. Schneider, Erik Durr
  • Publication number: 20100024653
    Abstract: The present invention relates to a conducting filter (110) adapted for removing airborne particles from the atmosphere and a filter assembly (150, 200, 300, 400, 500, 600) comprising such a filter. The conducting filter is made from a polymer which has received significantly increased electrical conductivity by a doping process. Such doped polymer are referred to as synthetic metals. Thanks to the electric properties of the synthetic metal, the filter according to the invention, comprising such polymer, may be supplied with electrical charge and whereby maintain its efficiency with regards to the electrostatic properties during operation. In the filter assembly according to the invention, the conducting filter may be supplied with electrical charge by connecting it to a voltage source.
    Type: Application
    Filed: August 27, 2009
    Publication date: February 4, 2010
    Inventor: Mikael NUTSOS
  • Publication number: 20100024652
    Abstract: Disclosed are apparatus, system, and method for enhancing air purification efficiency regarding a gaseous medium passing through an opening. Included is a high voltage source that creates an effective voltage field across the opening; and at least one charge bleeding element constructed and arranged to maintain an effective voltage field across the opening.
    Type: Application
    Filed: August 1, 2008
    Publication date: February 4, 2010
    Inventors: Andrew R. Fox, Marvin E. Jones, Larry J. Carson
  • Patent number: 7621984
    Abstract: The disclosed electrostatic precipitator cartridge for a tower air cleaner in accord with the present invention is low-cost, because it is constructed of injected molded plastics material and stamped and extruded metal components. It is easy to clean, not only because it's constitutive metal parts and plastic components are machine washable but also because the cartridge as a whole is machine washable, the pieces and components are designed and arranged to prevent intracartridge fluid buildup or retention after washing, thereby eliminating any electrical shorting or arcing or other undesirable phenomena resulting therefrom that could interfere with the operation of the electrostatic filter cartridge.
    Type: Grant
    Filed: June 20, 2007
    Date of Patent: November 24, 2009
    Assignee: Head waters R&D, Inc.
    Inventors: Ross L. Cowie, Rudy A. Vandenbelt
  • Publication number: 20090277329
    Abstract: This inventions provides a method for the removal of smut, fine dust and exhaust gas particles from polluted air comprising providing a particle catch arrangement with a charged surface, the particle catch arrangement being arranged to generate a static electric field, wherein the electric field is at least 0.2 kV/m. The invention further provides a particle catch arrangement comprising a surface that can be charged, further comprising a generator arranged to generate charge to the surface that can be charged and to generate a static electric field of at least 0.2 kV/m, wherein the particle catch arrangement is part of or integrated with an object comprising street furniture.
    Type: Application
    Filed: March 2, 2007
    Publication date: November 12, 2009
    Applicant: Technische Universiteit Delft
    Inventors: Willibrordus Nicolaas Johannes Ursem, Johannes Cornelis Maria Marijnissen, Rein Andre Roos
  • Patent number: 7591884
    Abstract: An air cleaner including an ionization unit and a dust collection unit is provided. A plurality of electrostatic flocked piles may be provided on the ionization unit, or on the dust collection unit, or on both the ionization unit and the dust collection unit. The electrostatic flocked piles further improve air cleaning performance by filtering out foreign materials through both physical contact and by filtering ionized foreign materials using electrostatic attraction. The air cleaner may be widely adapted for use with various types of air conditioning apparatuses, as well as in a stand alone application.
    Type: Grant
    Filed: October 26, 2006
    Date of Patent: September 22, 2009
    Assignee: LG Electronics Inc.
    Inventors: Sung-Hwa Lee, Sung-Hwan Lee, Ok-Chun Hyun
  • Patent number: 7585352
    Abstract: A method and apparatus electrically charges particulates that need to be removed from a moving air stream. Various methods of corona charging of particulates are used in the fields of electrostatic precipitation of dust, printers and copying machines. This invention is preferably specifically aimed at improving the separation and collection of particulates from dust, mist or vapor generating devices. In another embodiment, a grid electrostatic precipitator, in combination with a corona pre-charger, is used to remove diesel exhaust.
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: September 8, 2009
    Inventor: John P. Dunn
  • Patent number: 7531028
    Abstract: An air conditioning system includes an air flow pathway extending through a housing from an inlet to an outlet. Air conditioning apparatus is disposed in the airflow pathway between the inlet and the outlet conditioning an air stream passing through the air flow pathway from the inlet to the outlet. A modular electrically stimulated air filter apparatus is carried by opposed, parallel frameworks mounted in series in the air flow pathway between the inlet and the air conditioning apparatus filtering entrapping contaminants in the air stream flowing through the housing from the inlet to the outlet. The opposed parallel frameworks are mounted to opposed supports affixed to the housing.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: May 12, 2009
    Assignee: Y2 Ultra-Filter, Inc.
    Inventors: Peter J. Mello, Kenneth B. Tippets, Jr., Mark Vanderginst
  • Publication number: 20080307973
    Abstract: In an electrostatic precipitator for filtering particulate matter from a gas, a fan (10) draws the gas (5) through an ioniser section (7) and a collector section (6). Ioniser blades (3) with sawtooth spikes (8) create a corona discharge (4) when charged to a high voltage, so that gas-borne particles are charged when passing through the corona area. The collector section (6) consists of a set of metallic plates (1, 2) of which every other plate (1) is connected to ground, while the remaining plates (2) receive a charge by induction from the ioniser blades (3), and act as repeller plates, pushing charged particles in the gas flow (5) over to the grounded plates (1).
    Type: Application
    Filed: October 17, 2006
    Publication date: December 18, 2008
    Inventor: Roger Gale
  • Patent number: 7452411
    Abstract: The invention concerns an electrostatic ionic emission device for depositing on the surface of a plurality of particles aerosols within a fluid, a quasi-homogeneous amount of ions. The device includes a discharge corona conductive electrode, and a non-corona conductive receptor electrode. The receptor electrode has an open cellular foam structure and a pseudo planar active surface that faces the discharge electrode. The active surface of the receptor electrode has a multiplicity of substantially sharpened points.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: November 18, 2008
    Assignee: Airinspace B.V.
    Inventors: Elena Vladimirovna Volodina, Alexandre Vladimirovich Nagolkin
  • Patent number: 7431752
    Abstract: An air purifier includes an outer case having an air purifying cavity, an ionizer module, and an ozone reduction module. The ionizer module includes a power unit and an ionizing electrode. The ozone reduction module is electrically connected to the power unit for generating heat within the air purifying cavity, wherein when a temperature within the air purifying cavity reaches a preset temperature, a level of ozone generated by the ionizing electrode unit is substantially minimized and controlled for preventing excess generation of ozone.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: October 7, 2008
    Inventor: ZhuHuan Liang
  • Patent number: 7431838
    Abstract: An improved two-step replication process for fabrication of porous metallic membranes is provided. A negative of a porous non-metallic template is made by infiltration of a liquid precursor into the template, curing the precursor to form a solid negative, and removing the template to expose the negative. Metal is deposited to surround the exposed negative. Removal of the negative provides a porous metallic membrane having pores which replicate the pores of the original template membrane. The negative is kept immersed in a liquid at all times between removing the template and depositing the metal. This immersion eliminates damage to the negative that would be incurred in drying the negative out between these processing steps. Another aspect of the invention is metallic membranes prepared according to the preceding method. For example, metallic membranes having pores smaller on one side than on the other side of the membrane are provided.
    Type: Grant
    Filed: August 9, 2006
    Date of Patent: October 7, 2008
    Assignees: The Board of Trustees of the Leland Stanford Junior University, Honda Motor Co., Ltd
    Inventors: Sangkyun Kang, Yong-Il Park, Friedrich B. Prinz, Suk-Won Cha, Yuji Saito, Ali Farvid, Pei-Chen Su
  • Publication number: 20080230464
    Abstract: A conductive filtration media having a textile substrate (with a defined first side and a second side and a machine and cross-machine direction), where the conductive pattern on the first side is in registration with the conductive pattern on the second side of the textile substrate. The conductive pattern has a plurality of continuous conductive pathways across the textile substrate, the resistivity of the conductive pattern is less than 100 mega ohms when measured on a 2? by 12? sample taken in the machine and cross-machine direction of the textile substrate in accordance with test DIN 54 345, and the air permeability of the conductive filtration media is between 1 and 100 cc/cm2/sec as measured by ASTM D737. A conductive air filter made from the conductive filtration media and the method of making the conductive filtration media is also disclosed.
    Type: Application
    Filed: March 22, 2007
    Publication date: September 25, 2008
    Inventors: David E. Winstrup, Steven A. Stansell, Alfred R. DeAngelis
  • Patent number: 7410532
    Abstract: An electrostatic fluid accelerator includes an electrode array including an array of corona discharge electrodes and an array of accelerating electrodes. A detector is configured to sense a constituent component of the fluid as present in an output from the electrode array. A control circuit supplies power to the electrode array, the control circuit being responsive to an output from the detector for operating the electrode array responsive a level of the constituent component.
    Type: Grant
    Filed: February 6, 2006
    Date of Patent: August 12, 2008
    Inventors: Igor A. Krichtafovitch, Jacob L. Oharah, Volodymyr A. Bibikov, Christopher A. Martin, Vladimir L. Gorobets, Maciej R. Ziomkowski, Terence Tak-Shing Tam
  • Patent number: 7404847
    Abstract: Disclosed is a filtration enhancement apparatus and an associated method. The apparatus includes a number of electromagnetic grids that are placed in series. The first grid conditions ambient particles to generate particles with both a positive and a negative charge. These charged particles are then delivered to a second and third grid wherein a low, medium, and/or high frequency alternating current is employed to force the positive and negative charged particles to collide and conglomerate with one another. The conglomerated particles are then sent into the ambient environment for subsequent filtration.
    Type: Grant
    Filed: February 12, 2007
    Date of Patent: July 29, 2008
    Inventor: Don H. Hess
  • Patent number: 7393385
    Abstract: An apparatus useful for electrostatic deposition (ESD) of aerosol particles and methods of depositing the aerosol particles onto a substrate are disclosed. The ESD apparatus and the method of the present invention are useful for electrostatically depositing nanoparticles produced by gas-phase synthesis onto a substrate where the velocity of the flow of aerosol can be controlled.
    Type: Grant
    Filed: February 28, 2007
    Date of Patent: July 1, 2008
    Assignee: Corning Incorporated
    Inventors: Calvin Thomas Coffey, Curtis Robert Fekety, Andrey V Filippov, Clinton Damon Osterhout, Martin Andrew Sala, Carlton Maurice Truesdale