Parallel Disk Or Plate Collector Patents (Class 96/87)
  • Patent number: 10537901
    Abstract: An electric dust collecting device according to the invention includes an electric charging unit for electrically charging dust in air, a first filter unit including a plurality of discharge electrode plates spaced apart from each other to define passages therebetween through which dust electrically charged by the electric charging unit passes, and a second filter unit disposed downstream of the plurality of discharge electrode plates in an air flow direction and connected to a ground to cause corona discharge between the plurality of discharge electrode plates and the second filter unit and to collect electrically charged dust.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: January 21, 2020
    Assignee: LG ELECTRONICS INC.
    Inventor: Yanghwa Lee
  • Patent number: 10464074
    Abstract: The electric dust collector includes a dust collection unit for collecting electrified dust particles and a dust collection unit case for receiving the dust collection unit. The dust collection unit includes a plurality of films for generating an electric field and a fixing part for fixing the films in the dust collection unit case. Each of the films is formed in the shape of a band that is longer in the longitudinal direction than in the lateral direction, and the films are arranged so as to face each other such that gaps are formed between the respective films. The fixing part includes a gap maintenance part disposed on at least one side of a group of films in the lateral direction for maintaining the gaps. The gap maintenance part includes a plurality of vertical bars to be inserted into the gaps from the one side of the group of films.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: November 5, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Yanghwa Lee, Taeyoon Kim, Hooncheol Jeon, Inho Choi, Jieun Choi, Sanghyuk Son, Kyoungho Lee
  • Patent number: 8814995
    Abstract: An electrostatic precipitator having a collecting electrode plate assembly, including at least two electrode plates disposed substantially in a parallel to each other in the vertical plane within the electrostatic precipitator, forming a space between the collecting electrode plates, and a discharge electrode assembly interposed in said spaces, wherein the electrode assembly passing at least a supporting structure of the collecting electrode plate assembly. The supporting structure is provided with an electrical screening device at least in the area of the supporting structure facing said electrode assembly.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: August 26, 2014
    Assignee: ALSTOM Technology Ltd
    Inventors: Per Bengt Daniel Johansson, Andreas Olof Back
  • Patent number: 8690998
    Abstract: An electric precipitator includes a charge unit disposed at an upstream part and a dust collection unit disposed at a downstream part, the charge unit includes charge electrodes and a discharge wire disposed between two neighboring charge electrodes and separated from the charge electrodes, the dust collection unit includes high voltage electrodes, front ends of which are opposite to the charge unit, and low voltage electrodes, front ends of which are opposite to the charge unit and which alternate with high voltage electrodes, and the front ends of high voltage electrodes protrude toward the charge unit as compared to the front ends of low voltage electrodes, thereby guiding electrons to the discharge electrodes due to an electric field formed between the front ends of the high voltage electrodes and the discharge electrodes and thus reducing current leakage through the low voltage electrodes.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: April 8, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jun Ho Ji, In Sang Hwang, Byeong Cheol Yoon, Jun Young Lee
  • Patent number: 8690997
    Abstract: A two-sided attraction structure including an electrostatic chuck portion (2) and a power supply portion (5), the electrostatic chuck portion (2) including a dielectric member (3) in a plate-like shape, which is made of an insulating material and has a front side and a back side, and an internal electrode (4) mounted into the dielectric member, the front side and the back side of the dielectric member each serving as an attraction surface when voltage is applied to the internal electrode (4), the power supply portion (5) applying the voltage to the internal electrode, of the electrostatic chuck portion (2), in which the power supply portion (5) includes a solar cell (6) and a voltage boost circuit (7) for boosting power generated by the solar cell (6).
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: April 8, 2014
    Assignee: Creative Technology Corporation
    Inventors: Yoshiaki Tatsumi, Hiroshi Fujisawa, Megumu Kawae
  • 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: 8580017
    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: Grant
    Filed: June 4, 2012
    Date of Patent: November 12, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyong Soo Noh, Kochiyama Yasuhiko, So Young Yun
  • Publication number: 20130284025
    Abstract: An electrostatic precipitator (1) having a collecting electrode plate assembly (2), including at least two electrode plates (3) disposed substantially in a parallel to each other in the vertical plane within the electrostatic precipitator (1), forming a space (5) between the collecting electrode plates (3), and a discharge electrode assembly (4) interposed in said spaces (5), wherein the electrode assembly (4) passing at least a supporting structure (8) of the collecting electrode plate assembly (2). The supporting structure (8) is provided with an electrical screening device (11) at least in the area of the supporting structure (8) facing said electrode assembly (4).
    Type: Application
    Filed: June 27, 2013
    Publication date: October 31, 2013
    Inventors: Per Bengt Daniel JOHANSSON, Andreas Olof BACK
  • Patent number: 8512455
    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.
    Type: Grant
    Filed: April 22, 2010
    Date of Patent: August 20, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kochiyama Yasuhiko, Hyong-Soo Noh, Jun Ho Ji, So Young Yun
  • Publication number: 20130047859
    Abstract: A corona wire assembly including a first supporting member including a retaining device; a second supporting member including a retaining device; a corona wire capable of carrying a high voltage disposed between the first supporting member and the second supporting member; a ground discharge electrode disposed between the first supporting member and the second supporting member; wherein the corona assembly is separately installed and removed from an electrostatic precipitator is described. Current to the corona wire assembly can be tied to a fan assembly speed.
    Type: Application
    Filed: August 31, 2011
    Publication date: February 28, 2013
    Inventor: John R. Bohlen
  • Patent number: 8043413
    Abstract: An embodiment of the present invention provides a system for removing foreign objects from the airstream entering an inlet system of a turbomachine. The system may include an electrostatic system that may be configured to charge conductive, or partially conductive foreign objects that are in the airstream flowing through the system. This system may create an electric field to draw the charged foreign objects, allowing for a collecting section to remove the charged foreign objects from the airstream. An embodiment of the present invention may provide an automatic accumulation system for collecting the foreign objects removed from the airstream. An embodiment of the present invention may provide an automatic cleaning system for cleaning components of the collecting system.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: October 25, 2011
    Assignee: General Electric Company
    Inventors: Rahul J. Chillar, Stephen D. Hiner, Aaron M. Smith
  • Patent number: 7901489
    Abstract: This invention relates to an electrostatic precipitator suitable for removing industrial dust particles. This electrostatic precipitator with high efficiency includes a casing, in which the corona discharge electrode lines and the dust-collecting electrode plates, which form a plurality of sedimentation passages, are arranged in parallel and alternately. The vibration apparatuses for cleaning dust are placed respectively on the corona discharge electrode lines and the dust-collecting electrode plates. The wind shields are arranged alternately at both ends of each two adjacent sedimentation passages to form a plurality of air intake sedimentation passages and air exhaust sedimentation passages which are arranged alternately. The passages, where the wind shields are located on the side of air outlet are the air intake sedimentation passages and the air exhaust sedimentation passages with the wind shields located on the side of air inlet.
    Type: Grant
    Filed: August 9, 2006
    Date of Patent: March 8, 2011
    Assignee: Environmental Research Institute
    Inventors: Lieshui Jin, Ye Yuan
  • Publication number: 20100043641
    Abstract: The invention relates to a direct-current high-voltage generator that comprises: current unidirectional switches (74, 76); a driver unit (130) capable of controlling the switching operation from an on-state to an off-state of a switch (74) only when a switch connected in parallel is in the on-state
    Type: Application
    Filed: January 7, 2008
    Publication date: February 25, 2010
    Applicant: SAMES TECHNOLOGIES
    Inventor: Caryl Thome
  • Patent number: 7641718
    Abstract: The electrostatic precipitator (1) includes the housing (8) having the air duct (7) for communicating between the inlet (4) for sucking the contaminated air (3) and the outlet (6) for discharging the cleaned air (5), the air flow generator (10) generating the air flow (9) in the air duct (7), the collecting section (14) having a plurality of adsorption plates (13) rotating in accordance with the adsorption shaft (11), and the discharge section (24) equipped with the charging plate (20) having the discharge surface (21) opposing the adsorption surface (12) of the adsorption plate (13) and a plurality of the discharge electrodes (19) provided at the edge (22) of the charging plate (20) opposite the suction inlet.
    Type: Grant
    Filed: June 13, 2005
    Date of Patent: January 5, 2010
    Assignees: Zesu Giko Co., Ltd, Hidec Co., Ltd
    Inventors: Masatoshi Furuta, Shigenobu Ohkura
  • Publication number: 20090249958
    Abstract: An interchangeable preconcentrator assembly comprises an outer housing and an inner housing defining a chamber. A biased urging member is held at least partially within the outer housing and slidably biased toward a surface of the inner housing. When the biased urging member is at least partially retracted, a space is defined between the urging member and the surface of the inner housing for accommodating at least one preconcentrator chip. A continuous fluid flow path is defined through the outer housing and through the space. The interchangeable preconcentrator assembly may further comprise at least one modular preconcentrator carriage.
    Type: Application
    Filed: December 17, 2008
    Publication date: October 8, 2009
    Inventors: Scott Cambron, Thomas Roussel, Robert Keynton, Michael Martin, Kevin Walsh, Doug Jackson, John Naber
  • Patent number: 7597749
    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.
    Type: Grant
    Filed: July 18, 2006
    Date of Patent: October 6, 2009
    Assignee: Oreck Holdings, LLC
    Inventors: Christopher M. Paterson, Dennis T. Lamb, Bruce M. Kiern, Owen T. Bourgeois
  • Publication number: 20090056551
    Abstract: The electrostatic precipitator (1) comprises the housing (8) having the air duct (7) for communicating between the inlet (4) for sucking the contaminated air (3) and the outlet (6) for discharging the cleaned air (5), the air flow generator (10) generating the air flow (9) in the air duct (7), the collecting section (14) having a plurality of adsorption plates (13) rotating in accordance with the adsorption shaft (11), and the discharge section (24) equipped with the charging plate (20) having the discharge surface (21) opposing the adsorption surface (12) of the adsorption plate (13) and a plurality of the discharge electrodes (19) provided at the edge (22) of the charging plate (20) opposite the suction inlet.
    Type: Application
    Filed: June 13, 2005
    Publication date: March 5, 2009
    Applicants: ZESU GIKO CO., LTD., HIDEC CO., LTD.
    Inventors: Masatoshi Furuta, Shigenobu Ohkura
  • Patent number: 7481922
    Abstract: Fluid treatment apparatus having an alloy disk assembly comprised of a plurality of disks, each prepared from the metal elements copper, zinc, nickel, silver, and tin, which individually exhibit great propensity for reducing scale formation in flow conduits; particularly when combined together to form the fluid treatment alloy disk assembly of this disclosure. The disk assembly is housed within a suitable enclosure having passageways arranged to effect countercurrent flow through a series of apertured disks. The close proximity of the counterflowing streams within the alloy disk assembly provide unexpected advances in the art of fluid treatment.
    Type: Grant
    Filed: January 5, 2005
    Date of Patent: January 27, 2009
    Inventor: Edward Horton Madden
  • Patent number: 7473304
    Abstract: An air filtration device for suppressing biological pollutants for closed environments, including at least one enclosure with at least one air inlet, at which at least one perforated conducting grille is located, that has a present negative electrical potential adapted to emit electrons when air flows, so as to give negative electric charge to particles to which microorganisms adhere, at least one air passage duct being formed between at least one plate having predefined positive potential for collecting negatively charged particles to which microorganisms adhere, at least one deflector plate having a negative potential adapted to divert the particles to which microorganisms adhere, an electrical field being generated between the collector plate and the deflector plate, facing each other, the field to divert and precipitate the particles to which the microorganism adhere onto the collector plate, and an inactivator for inactivation of the microorganisms provided and at least one filtered air outlet.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: January 6, 2009
    Inventor: Mario Besi
  • Patent number: 7468094
    Abstract: A method of repairing an electrostatic precipitator, including building a temporary support truss assembly, supporting the temporary truss assembly at the level of the hot roof of the electrostatic precipitator, transfeffing the weight of the internal components of the electrostatic precipitator from the upper girders to the temporary truss assembly, repairing or replacing the upper girders of the electrostatic precipitator, and then transferring the weight of the internal components to the repaired or replaced upper girders.
    Type: Grant
    Filed: February 5, 2007
    Date of Patent: December 23, 2008
    Assignee: Hamon Research—Cottrell Inc.
    Inventor: Rodney A. Hendricksen
  • Patent number: 7431755
    Abstract: A dust-collecting electrode where at least one unit electrode between the unit electrodes facing each other includes: a ceramic dielectric body, a surface conductor disposed so as to cover at least a part of the surface of the ceramic dielectric body on the side where the unit electrodes face each other, and an internal conductive layer disposed inside the ceramic dielectric body and being electrically independent of the surface conductor. The dust-collecting electrode being capable of generating an electric field and silent discharge between the unit electrodes by applying voltage between the surface conductor of the one unit electrode and the other unit electrode and generating creeping discharge on the surface of the one unit electrode by applying voltage via the ceramic dielectric body.
    Type: Grant
    Filed: October 17, 2007
    Date of Patent: October 7, 2008
    Assignee: NGK Insulators, Ltd.
    Inventors: Naoki Kobayashi, Yasumasa Fujioka
  • Publication number: 20080078295
    Abstract: An air purifier includes a housing, a high voltage power supply, a first electrode assembly in which a wire-like first electrode is either the only first electrode or, alternatively, is spaced sufficiently far from any other such first electrodes so as to avoid undesirable effects upon each other, and a second electrode assembly in which there are a plurality of blade-like second electrodes. The air purifier can be of the type in which air flows through the housing as a result of electro-kinetic effects. To increase air flow velocity, the voltage between first and second electrodes is relatively high, such as 23-50 kV, and the first and second electrodes are accordingly spaced apart a relatively great distance, such as at least 30 mm.
    Type: Application
    Filed: October 2, 2006
    Publication date: April 3, 2008
    Inventors: Shengwen Leng, Guangsheng Liu
  • Publication number: 20080017035
    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.
    Type: Application
    Filed: July 18, 2006
    Publication date: January 24, 2008
    Inventors: Christopher M. Paterson, Dennis T. Lamb, Bruce M. Kiern, Owen T. Bourgeois
  • Patent number: 7291207
    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.
    Type: Grant
    Filed: December 8, 2004
    Date of Patent: November 6, 2007
    Assignee: Sharper Image Corporation
    Inventors: Charles E. Taylor, Andrew J. Parker, Igor Y. Botvinnik, Shek Fai Lau, Gregory S. Snyder, John Paul Reeves
  • Patent number: 7291206
    Abstract: A pre-ionizer for use with an electrostatic precipitator is provided according to an embodiment of the invention. The pre-ionizer includes two or more corona ground elements arranged in a substantially parallel orientation. A corona ground element of the two or more corona ground elements includes a substantially elongate body including a proximate end and a distal end and first and second projections formed on the proximate end and the distal end. The first and second projections retain the corona ground element in the electrostatic precipitator. The pre-ionizer further includes one or more corona charge elements positioned between two adjacent corona ground elements of the two or more corona ground elements. When a high voltage electrical field is placed across the two or more corona ground elements and the one or more corona charge elements, the pre-ionizer at least partially ionizes airflow through the pre-ionizer.
    Type: Grant
    Filed: April 18, 2006
    Date of Patent: November 6, 2007
    Assignee: Oreck Holdings, LLC
    Inventors: Bruce M. Kiern, Dennis T. Lamb, Charles W. Reynolds, Christopher M. Paterson
  • Patent number: 7273516
    Abstract: A plate heat exchanger for exchanging heat between a first air stream and a second air stream includes a plurality of plates limiting first and second exchange chambers which are serially arranged in a transversal direction with respect to the plates. A first air stream of outside air passes through the first exchange chambers, a second air stream originating from ventilated rooms passes through the second exchange chambers. The heat exchanger further includes an ionization device for ionizing particles entrained in the first air stream so that the particles deposit at conductive plates of the first exchange spaces, a water distribution system for periodically discharging water into the first exchange spaces for cleaning the plates of the heat exchanger from deposited particles, and a water collection device for discharging collected water.
    Type: Grant
    Filed: March 22, 2004
    Date of Patent: September 25, 2007
    Assignee: Mentus Holding AG
    Inventor: Urs A. Weidmann
  • Patent number: 7264659
    Abstract: A plate fastener for an electrostatic precipitator cell is provided according to an embodiment of the invention. The plate fastener includes a fastener shaft including a head. The fastener shaft extends through the electrostatic precipitator cell. The head is adapted to retain a first end plate of the electrostatic precipitator cell. The plate fastener further includes a plurality of spacers configured to fit onto the fastener shaft. A spacer of the plurality of spacers is adapted to be positioned between successive polarity plates of a plurality of plates of the electrostatic precipitator cell. The plate fastener further includes a one-way shaft retainer configured to affix to the fastener shaft. The one-way shaft retainer is adapted to retain a second end plate of the electrostatic precipitator cell. The plate fastener affixes the plurality of plates together into a set of spaced-apart plates.
    Type: Grant
    Filed: May 10, 2006
    Date of Patent: September 4, 2007
    Inventor: Paul A. Moshenrose
  • Patent number: 7244290
    Abstract: An electrostatic room air cleaner includes a housing having a given profile and a plurality of electrostatic precipitation collector units arrayed in the housing with a common fan to circulate room air through the plurality of electrostatic precipitation collector units simultaneously. A total clean air delivery rate is delivered that is determined as the arithmetic sum of the clean air delivery rates of the plurality of electrostatic precipitation collector units arrayed in the housing of given profile. The greater the number of units arrayed, the smaller may be their size, and the easier they are to handle, maintain and replace.
    Type: Grant
    Filed: November 22, 2004
    Date of Patent: July 17, 2007
    Assignee: Headwaters, Inc.
    Inventors: Rudy A. Vandenbelt, Charles M. Lanning, Ross L. Cowie
  • Patent number: 7241330
    Abstract: An electrostatic precipitator cell is provided according to an embodiment of the invention. The electrostatic precipitator cell includes a connection rod including first and second ends, a length, a cross-sectional shape, and a lengthwise surface. The electrostatic precipitator cell further includes collection plates located in spaced-apart arrangement on the connection rod. A collection plate includes at least one aperture. The central aperture substantially conforms to the cross-sectional shape of the connection rod. The electrostatic precipitator cell further includes an attachment device(s) for removably attaching the collection plates to the connection rod. The collection plates are held in a substantially parallel orientation on the connection rod by the attachment device(s).
    Type: Grant
    Filed: October 25, 2004
    Date of Patent: July 10, 2007
    Assignee: Oreck Holdings, LLC
    Inventor: Paul A. Moshenrose
  • Patent number: 7238225
    Abstract: In a plasma air dust collector, the plasma air dust collector includes a first electrode fixing unit and a second electrode fixing unit respectively having a power terminal; at least two dust collecting electrodes; a discharge electrode arranged between the dust collecting electrodes; a terminal protrusion formed at the bottom end of each dust collecting electrode in the length direction; a terminal protrusion insertion hole formed at a side of the first electrode fixing unit; a combining protrusion formed at a side of the first electrode fixing unit and the second electrode fixing unit; and a combining groove formed at the both ends of each dust collecting electrode.
    Type: Grant
    Filed: December 8, 2003
    Date of Patent: July 3, 2007
    Assignee: LG Electronics Inc.
    Inventors: Young-Ki Hong, Sung-Hwa Lee, Jeong-Ho Park
  • Patent number: 7160364
    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.
    Type: Grant
    Filed: April 23, 2004
    Date of Patent: January 9, 2007
    Assignee: Geecom (PTY) Limited
    Inventor: August F. Mischkulnig
  • Patent number: 7081155
    Abstract: Particle separator having a flow passage for air to be cleaned from electrically charged particles includes at least two electrode element surfaces arranged substantially parallel to each other and at a mutual gap width (d), at least one electrode element surface being designed from a very high ohmic material, preferably with a resistivity corresponding to or higher than antistatic. The particle separator also is intended to be connected to a high voltage source, the second electrode element surface being intended to be connected to the pole of the high voltage source having the lowest absolute potential.
    Type: Grant
    Filed: August 8, 2002
    Date of Patent: July 25, 2006
    Assignee: Eurus Air Design AB
    Inventor: Andrzej Loreth
  • Patent number: 7077890
    Abstract: Electrostatic precipitator (ESP) systems and methods are provided. A system includes at least one corona discharge electrode and at least one collector (and likely, at least a pair of collector electrodes) that extend downstream from the corona discharge electrode. An insulated driver electrode is located adjacent the collector electrode, and where there is at least a pair of collector electrodes, between each pair of collector electrodes. A high voltage source provides a voltage potential to the at least one of the corona discharge electrode and the collector electrode(s), to thereby provide a potential different therebetween. The insulated driver electrode(s) may or may not be at a same voltage potential as the corona discharge electrode, but should be at a different voltage potential than the collector electrode(s).
    Type: Grant
    Filed: February 9, 2004
    Date of Patent: July 18, 2006
    Assignee: Sharper Image Corporation
    Inventor: Igor Y. Botvinnik
  • 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: 6932857
    Abstract: A multi-stage collector of the type used to collect particles from industrial gas. The collector can contain multiple narrow and wide zones formed by a plurality of parallel corrugated plates. Contained in the narrow zones can be elongated electrodes with sharp leading and/or trailing edges. These electrodes can provide a non-uniform electric field near their sharp edges leading to corona discharge. The corona discharge causes particulate matter in the gas flow to become charged. The region in narrow zones away from the sharp edges of the electrodes resembles a parallel plate capacitor with relatively uniform electric field. In this region, particles can be collected on the plates and on the electrode. Wide regions can contain barrier filters (bag filters) with conductive surfaces. The collector can also be used to clean inlet gas in gasification plants and to collect re-usable materials from a gas stream.
    Type: Grant
    Filed: September 8, 2003
    Date of Patent: August 23, 2005
    Inventor: Henry Krigmont
  • Patent number: 6918951
    Abstract: An air filter includes a stack of filter discs formed with contacting faces having surface formations defining filtering passageways between adjacent discs for removing solid particles from the air passing through the stack. The filter discs in the stack further include electrodes spaced from each other axially of the stack and connectable to a voltage source for producing an electrical field attracting solid particles towards the discs to thereby enhance removal of the solid particles from the air passing through the stack. The filter discs in the stack include a first plurality of insulating discs composed of insulating material, and a second plurality of electrode discs composed of electrically-conductive material, with the electrode discs separated from each other by at least one insulating disc.
    Type: Grant
    Filed: February 26, 2002
    Date of Patent: July 19, 2005
    Assignee: Milow Ltd.
    Inventor: Gideon Rosenberg
  • Patent number: 6872238
    Abstract: Fine particles of dust and other pollutants in gas streams are agglomerated to form larger particles which are more easily filtered in downstream processing. In one embodiment, particles in successive portions of the gas stream are charged with opposite polarity, and the gas stream is introduced into an Evasé portion (12) to slow it down. Particles of different sizes have differential deceleration and therefore mix generally in the direction of flow, leading to agglomeration of oppositely-charged particles. In another embodiment, a gas stream is divided into substreams in respective parallel passages, and the particles in adjacent passages are charged to opposite polarity. Deflectors at the downstream end of the passages cause substreams of particles of opposite polarity to mix, with resultant agglomeration of oppositely charged particles.
    Type: Grant
    Filed: November 10, 2000
    Date of Patent: March 29, 2005
    Assignee: Indigo Technologies Group Pty Ltd.
    Inventor: Rodney John Truce
  • 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: 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: 6524369
    Abstract: A multi-stage particulate matter collector of the type used to collect particles from waste industrial gas. The collector can contain multiple narrow and wide zones formed by a plurality of parallel corrugated plates. Contained in the narrow zones are elongated electrodes with sharp leading and/or trailing edges. These electrodes provide a non-uniform electric field near their sharp edges leading to corona discharge. The corona discharge causes particulate matter in the gas flow to become charged. The region in narrow zones away from the sharp edges of the electrodes resembles a parallel plate capacitor with relatively uniform electric field. In this region, particles can be collected on the plates and on the electrode. Wide regions can contain barrier filters (bag filters) with conductive surfaces. The electric field is also relatively uniform in this region causing electrostatic collection on the plates and filter surface.
    Type: Grant
    Filed: September 10, 2001
    Date of Patent: February 25, 2003
    Inventor: Henry V. Krigmont
  • Patent number: 6506238
    Abstract: An electric dust collecting unit disclosed herein includes a corona discharging portion for giving rise to corona discharge to electrically charge cigarette smoke particulates, toner, and other floating particulates in air, an electric collecting portion disposed on a leeward side of this corona discharging portion, for electrically collecting the floating particulates charged at the corona discharging portion, and a box-type frame with its opposite surfaces opened, in such a configuration that the corona discharging portion has a plurality of needle electrodes which is disposed in such a way that their respective needle tips may be directed toward the leeward side (that is, with their backs directed toward a front face opening in the box-type frame).
    Type: Grant
    Filed: November 15, 2000
    Date of Patent: January 14, 2003
    Assignee: O-DEN Corporation
    Inventor: Kiyomu Endo
  • Patent number: 6471753
    Abstract: A device for collecting dust using highly charged hyperfine liquid droplets formed through an electro-hydrodynamic atomization process is disclosed. In the dust collecting device of this invention, a high voltage is applied to capillaries, set within a dust guide duct and having nozzles at their tips. An electric field is thus formed between the capillaries and the duct, and allows the nozzles to spray highly charged hyperfine liquid droplets. Such liquid droplets absorb dust laden in air, flowing in the duct by suction force of a fan. An electrostatic dust collector is detachably coupled to the duct while being insulated from the duct, and forms an electric field having polarity opposite to that of the highly charged liquid droplets, thus electrostatically collecting and removing the dust absorbed by the highly charged liquid droplets. The dust collecting device of this invention easily and effectively removes fine dust having a size smaller than 0.1 cm.
    Type: Grant
    Filed: October 25, 2000
    Date of Patent: October 29, 2002
    Assignees: Ace Lab., Inc.
    Inventors: Kang Ho Ahn, Jeong Ho Ahn, Sang Hyun Ahn
  • Patent number: 6471754
    Abstract: A purification system for preventing secondhand tobacco smoke from reaching an ambient environment thereabout. Two components of the system include a smoke entrapment intake hood for aggregating the secondhand smoke and an electrostatic suction filter assembly in communication with the entrapment hood for extracting aggregated smoke from the hood, removing untoward particulate from the smoke, and releasing resulting clean air to the environment. The filter assembly includes at least one particulate filter for collecting smoke-borne particulate and at least one appropriately charged or grounded plate for electrostatically collecting charged smoke-borne particulate. An exit port from the filter assembly permits the release of so-cleaned air to the environment as a negative-ion emitter, positioned immediately inside the exit port, introduces charged ions into the cleansed air.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: October 29, 2002
    Inventor: Tahsin Ammouri
  • Patent number: 6391097
    Abstract: A multiple disc filter includes a plurality of discs arranged in a stack with a face of each disc in contact with a face of the next adjacent disc in the stack. The contacting faces of the discs include surface formations defining small filtering passageways between adjacent discs for filtering a fluid passing between them. The surface formations include a rib array of spaced rib sections integrally formed on a flat surface of one of the contacting faces; and a protrusion array of spaced, discrete protrusions spacing the rib array of the one contacting face from a flat surface of the other contacting face.
    Type: Grant
    Filed: June 16, 2000
    Date of Patent: May 21, 2002
    Assignees: Milow Ltd.
    Inventor: Gideon Rosenberg
  • Patent number: 6235088
    Abstract: An alcohol separator is provided with an atomizer which supplies a mist of atomized alcohol solution to one region of a flow path, and an electrostatic collection device which uses an electrostatic field corona discharge to capture, liquefy, and recover alcohol solution mist generated by the atomizer.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: May 22, 2001
    Inventor: Kazuo Matsuura
  • Patent number: 6096119
    Abstract: In a two-stage, electrostatic precipitator for extracting airborne particles, charged plates are electrically connected to each other and physically separated from each other by ferrite spacers so that an impedance of the spacers limits an amount of arc discharge current that will flow when an arc discharge occurs from one of the charged plates. Ferrite spacers can also be provided to electrically connect and physically separate grounded plates in the precipitator. In addition, aluminum spacers can be provided to adjust the impedance of the series of spacers through which an arc discharge current flows, so that the current is a minimum necessary amount for an arc detection circuit to detect.
    Type: Grant
    Filed: July 14, 1998
    Date of Patent: August 1, 2000
    Assignee: Trion, Inc.
    Inventors: Chi-Pai Ho, Ronald D. Voigts, Charles A. Haynes, James S. Blair
  • Patent number: 5902380
    Abstract: A dust collector efficiently collects dust, especially fine dust (submicron particles). The dust collector, which removes dust and/or mist contained in a gas, includes a charger for charging the dust and/or mist contained in a gas, a sprayer for spraying the charged dust or charged mist or spraying a dielectric material to the charged dust or mist, an electric field former for forming an electric field for subjecting the dielectric material to dielectric polarization, and a collector for collecting the dielectric material which has arrested the charged dust and/or the charged mist.
    Type: Grant
    Filed: May 23, 1997
    Date of Patent: May 11, 1999
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Kazutaka Tomimatsu, Yasutoshi Ueda
  • Patent number: 5797978
    Abstract: An air filter body includes a plurality of discs of electrically insulating material arranged in a stack and having ribbed contacting faces defining small filtering passageways between the contacting faces of adjacent discs. Each disc has an electrode layer insulated by the respective disc from the electrodes of the adjacent discs. Each electrode is electrically connected to an electrical terminal at an edge of the respective discs. Electrical conductors connect the electrical terminals of alternating discs to one side of a voltage source, and the electrical terminals of the remaining alternating discs to the other side of the voltage source.
    Type: Grant
    Filed: November 27, 1995
    Date of Patent: August 25, 1998
    Inventors: Gideon Rosenberg, Ilan Leskly
  • 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