Collecting Electrode Modifies Gas Flow Patents (Class 96/65)
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Patent number: 10471485Abstract: Presented is an electric field intensity compensation method for constructing a non-uniform electric field through an auxiliary electrode, including steps of: in a matrix electrode unit, designing an auxiliary electrode arrangement position according to the spatial distribution of the pollutant concentration; designing the polarity of the auxiliary electrode according to the position relationship between the auxiliary electrode and matrix electrodes; and constructing a non-uniform electric field by the auxiliary electrode and the matrix electrodes to implement space compensation of the electric field intensity.Type: GrantFiled: March 30, 2016Date of Patent: November 12, 2019Assignee: SHENYANG INSTITUTE OF APPLIED ECOLOGY, CHINESE ACADEMY OF SCIENCESInventors: Shuhai Guo, Bo Wu, Fengmei Li, Sa Wang
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Patent number: 8961659Abstract: 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: GrantFiled: October 20, 2009Date of Patent: February 24, 2015Assignee: Carrier CorporationInventor: Peter J. McKinney
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Publication number: 20130074692Abstract: The invention relates to a process for the separation of charged aerosols, in which the aerosol is, first of all, separated in a collector electrode, which can be flowed through under the effect of a space charge. For the production of a high electrical potential, electrical charges of the aerosol to be separated are subsequently collected on the collector electrode. Finally, the residual aerosol exiting from the collector electrode is guided through the separation zone at high field intensity. In accordance with the invention, the invention also relates to a device for the implementation of the above-stated process.Type: ApplicationFiled: November 4, 2009Publication date: March 28, 2013Inventors: Christian Lübbert, Ulrich Riebel, Sergiy Lebedynskyy
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Publication number: 20120272896Abstract: Apparatus to capture aerosols, fluid jetting apparatus, and aerosol diverters are disclosed. An example aerosol capture apparatus includes a corona wire to generate ions, and a reference plate positioned below the corona wire and above a substrate on which a fluid is to be deposited, the reference plate to provide a reference potential to direct the ions toward the reference plate to force aerosol particles associated with the fluid toward the reference plate.Type: ApplicationFiled: April 29, 2011Publication date: November 1, 2012Inventors: Omer Gila, Napoleon J. Leoni, Jeffrey Nielsen
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Patent number: 8211217Abstract: A wet electrostatic precipitator (ESP) is disclosed to have a housing, several discharge wires, two roughened collection electrodes coated with TiO2 or SiO2 nanoparticles, two porous metallic plates, and two roughened glass plates coated with TiO2 or SiO2 nanoparticles. The porous metallic plates and the glass plates coated with TiO2 or SiO2 nanoparticles located above the collection electrodes are used to enhance the uniformity of the water film. When particles are introduced into the ESP, they are charged by gas ions generated by corona discharge, and then migrate to collection electrodes due to electrostatic force. Finally, particles are removed by uniform water film flowing downward along the collection electrodes. Furthermore, pulse jet passing through the small holes on the collection plates is used to clean discharge wires, maintaining electric corona strength and prolonging the operation life.Type: GrantFiled: December 17, 2009Date of Patent: July 3, 2012Assignee: National Chiao Tung UniversityInventors: Chuen-Jinn Tsai, Guan-Yu Lin
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Publication number: 20110168463Abstract: 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: ApplicationFiled: January 14, 2010Publication date: July 14, 2011Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: William Paul Perkins, Renata Michaela Arsenault, Jimmy H. Kapadia, Steven A. Daleiden, Alan McDonald, Richard Michael Isaacs, Allen Dennis Dobryden, Matthew Fleming
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Publication number: 20110126712Abstract: Clean corona ionization bars separate contaminant byproducts from corona generated ions by establishing a non-ionized gas stream having a pressure and directed toward an attractive non-ionizing electric field of a charge neutralization target, by establishing a plasma region of ions and contaminant byproducts in which the pressure is sufficiently lower than the pressure of the non-ionized gas stream to prevent byproducts from migrating into the non-ionized gas stream. The ionization bar(s) may be located sufficiently close to the charged neutralization target that a non-ionizing electric field of the target induces at least a substantial portion of the ions to migrate into the non-ionized gas stream and to the neutralization target as a clean ionized gas stream.Type: ApplicationFiled: February 4, 2011Publication date: June 2, 2011Inventor: Peter GEFTER
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Publication number: 20110056371Abstract: A method and sensor for monitoring chemical species in a gas flow are described. An ionized sample of gas is passed through a flow channel, with a DC electric field applied transverse to the longitudinal axis of the channel. Any electric current produced by the ion flow is measured, with variations in the current being indicative of a change in composition of the gas flow. In certain embodiments, the DC field may be varied over time, to sweep the field voltage. The detected current against field voltage graph may be taken as a profile of a particular gas composition. Variations in the profile again are indicative of a change in gas composition.Type: ApplicationFiled: September 21, 2010Publication date: March 10, 2011Inventor: Andrew H. Koehl
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Publication number: 20100186593Abstract: A non-discharge type air purification apparatus for industry is disclosed, which is able to effectively remove a smell substance and pollutant contained in an exhaust gas by supplying an enough amount of anion with the help of a multi-step anion generation unit without a high voltage discharge.Type: ApplicationFiled: September 22, 2006Publication date: July 29, 2010Inventor: Bu Yeol Kim
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Patent number: 7625428Abstract: Generally, systems for air and water purification using unpowered charged sorbent mediums (3) which may include layered double hydroxide (LDH) (1) compositions, lignin (2), and methods of sorbing inorganic or organic material(s) onto such mediums, including anionic contaminants (10), cationic contaminants (11), non-ionic organic contaminants (20), and even biological agents (7) such as bacteria or viruses present in liquids or gases.Type: GrantFiled: January 28, 2004Date of Patent: December 1, 2009Assignee: The University of Wyoming Research CorporationInventors: Song Jin, Alan E. Bland, Terry H. Brown
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Patent number: 7625435Abstract: An air/oil separator for use in a gas turbine engine includes a labyrinth path having an air/oil inlet, air outlet and oil outlet, a device for creating an electrical field within the labyrinth path and a device for creating a suction action at the oil outlet to draw liquid oil from the labyrinth path and for delivering the liquid oil under pressure to a pressurized source of oil in the engine.Type: GrantFiled: September 22, 2006Date of Patent: December 1, 2009Assignee: Pratt & Whitney Canada Corp.Inventor: Kevin Allan Dooley
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Publication number: 20090272268Abstract: Purification method and apparatus for purifying a gas stream by oxygen removal. The apparatus includes primary and secondary oxygen separation zones and tubular electrically driven oxygen separation elements. There are more elements in the primary zone than the secondary zone so that low concentrations of oxygen can be obtained in a purified stream and turbulent flow conditions can also be obtained that will permit purification to very low levels. In addition, a junction is provided to connect the tubular separation elements to metallic elements such as manifolds.Type: ApplicationFiled: April 30, 2008Publication date: November 5, 2009Inventor: Jonathan Andrew Lane
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Publication number: 20090158926Abstract: A particulate filtration system for removing particulates suspended in a fluid that includes: 1) a filter element; 2) a pre-collector body component operably connected to the filter element and capable of receiving an electrical charge to attract and remove particles suspended in the fluid; and 3) means for cooling the pre-collector body component. The means for cooling the pre-collector body component may include a convective cooling channel through which a coolant flows. The system may further include a discharge electrode spaced apart from the pre-collector body component. The discharge electrode may be capable of receiving an electrical charge causing a difference in the electronic potential between the pre-collector body component and the discharge electrode.Type: ApplicationFiled: December 20, 2007Publication date: June 25, 2009Inventors: Robert Taylor, Charles Sedman
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Patent number: 7497889Abstract: Arranged within a cylindrical housing are capturing cells each including a cylindrical outer electrode capable of capturing particulates and an inner electrode inserted into the outer electrode and lined at its outer surface with a dielectric. A divergent exhaust unit is arranged on an end of the housing so as to guide exhaust to interiors in the respective capturing cells. A convergent exhaust unit is arranged on the other end of the housing so as to communicate with a gap between an inner surface of the housing and outer surfaces of the outer electrodes in the respective cells. The inner and outer electrodes are connected to an electric discharge controller.Type: GrantFiled: June 2, 2004Date of Patent: March 3, 2009Assignee: Hino Motors, Ltd.Inventors: Takatoshi Furukawa, Yoshihide Takenaka, Koichi Machida
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Patent number: 7356987Abstract: An exhaust gas recirculation system for a power source, has at least one inlet port configured to receive at least a portion of a flow of exhaust produced by the power source. The exhaust gas recirculation system also has an electrode disposed upstream of the at least one inlet port and configured to charge particulate matter in the flow of exhaust. The exhaust gas recirculation system further has at least one collection surface configured to allow the at least one electrode to repel the charged particulate matter away from the at least one inlet port towards the at least one collection surface.Type: GrantFiled: July 30, 2004Date of Patent: April 15, 2008Assignee: Caterpillar Inc.Inventors: Matthew Thomas Kiser, David Michael Thaler, Anthony Clark Rodman, Matthew Earnest Williams
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Patent number: 7261766Abstract: The separation of liquid and/or solid components from a multiphase fluid stream passing through a supersonic fluid separator is enhanced by injecting a surface active agent into the fluid stream passing through the separator. Preferably the spray is injected via an injection tube that has a positive or negative electrical potential, whereas one of the walls of the separator housing has an opposite electrical potential, so that the injected spray and any liquid droplets and/or particles formed around the injected nuclei are induced to flow towards said electrically loaded wall.Type: GrantFiled: April 29, 2003Date of Patent: August 28, 2007Assignee: Shell Oil CompanyInventors: Marco Betting, Cornelis Antonie Tjeenk Willink
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Patent number: 6951582Abstract: An air purifier device includes a fan unit in an electrically conductive housing for drawing ambient air into the housing via an air inlet, and an electrically conductive dust-collecting member in the housing and disposed adjacent to an air outlet. A detecting unit is operable so as to provide a control signal in response to at least one of a change in electrical characteristics of the housing due to body contact therewith, and a change in electrical characteristics of the dust-collecting member due to excessive accumulation of dust thereon. A power control unit is operable to supply electric power to a negative ion generating unit such that a drive voltage is applied to an ionizing member of the negative ion generating unit, and is responsive to the control signal from the detecting unit to interrupt supply of the electric power to the negative ion generating unit.Type: GrantFiled: November 4, 2004Date of Patent: October 4, 2005Inventors: Sung-Lin Tsai, Chun-Ming Wu
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Patent number: 6899748Abstract: A method and apparatus for removing contaminants from gas streams. A first step involves selecting a contaminant to be removed from a gas stream and determining a characteristic ionizing energy value required to selectively ionize the selected contaminant with minimal effect on other contaminants in the gas stream. A second step involves applying the characteristic ionizing energy value to the gas stream and selectively ionizing the selected contaminant. A third step involves capturing the selected contaminant after ionization.Type: GrantFiled: May 28, 2004Date of Patent: May 31, 2005Inventor: Moustafa Abdel Kader Mohamed
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Patent number: 6875257Abstract: A particle filter for microelectromechanical systems is provided that includes a particle trap formed on a substrate material. The particle trap includes an array of multidimensional geometric structures in an adjacent relationship. The geometric structures further define a plurality of multidimensional voids therebetween for trapping particles therein. The individual multidimensional geometric structures are formed by a plurality of vertically interconnected geometric shapes to define different configurations of voids between the adjacent geometric structures. In one embodiment of the filter system, an electrical bias is applied to the array of multidimensional geometric structures to facilitate attracting and trapping of particles in the filter.Type: GrantFiled: August 20, 2002Date of Patent: April 5, 2005Assignee: MEMX, Inc.Inventor: Murray Steven Rodgers
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Patent number: 6508982Abstract: An air-cleaning apparatus and air-cleaning method whereby air is cleaned with an air flow containing ions and ozone generated by corona discharge. The apparatus has a wind tunnel part including a trumpet-shaped member (3) having an opening at the bottom thereof and a cylindrical member (4) connected to the opening at the bottom of the trumpet-shaped member (3). The wind tunnel part has a titanium dioxide metal evaporated onto the surface thereof. A needle electrode (1) is placed in front of the trumpet-shaped member (3) of the wind tunnel part near an axis of the trumpet-shaped member (3). An annular electrode is formed on the inner surface of the wind tunnel part. A high-voltage generating unit applies a high voltage between the needle electrode (1) and the annular electrode (2). A housing (10) accommodates the needle electrode (1), the annular electrode (2) and the wind tunnel part and has an air inlet (11) on a side thereof closer to the needle electrode.Type: GrantFiled: December 22, 1998Date of Patent: January 21, 2003Assignee: Kabushiki Kaisha SeisuiInventor: Masami Shoji
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Patent number: 6368392Abstract: 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: GrantFiled: May 30, 2000Date of Patent: April 9, 2002Assignee: O-Den CorporationInventors: Shigemitsu Ohtake, Kiyomu Endo
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Patent number: 6312507Abstract: A hand-holdable electro-kinetic electro-static ionic air refreshener-conditioner for a pet shelter or litter box includes a self-contained ion generator that provides electro-kinetically moved air with ions and safe amounts of ozone. The ion generator includes a high voltage pulse generator whose output pulses are coupled between first and second electrode arrays. Preferably the first array comprises one or more pin-like electrodes and the second array comprises one more washer-like electrodes. Preferably a ratio between effective area of an electrode in the second array compared to effective area of an electrode in the first array exceeds about 15:1 and preferably is about 20:1. An electric field produced by the high voltage pulses between the arrays produces an electrostatic flow of ionized air containing safe amounts of ozone. Optionally, a sensor detects odor adjacent the refreshener-conditioner causes the ion generator to be activated when sensed odor exceeds a predetermined threshold.Type: GrantFiled: February 12, 1999Date of Patent: November 6, 2001Assignee: Sharper Image CorporationInventors: Charles E. Taylor, Shek Fai Lau
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Patent number: 5922111Abstract: 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: GrantFiled: June 5, 1996Date of Patent: July 13, 1999Assignee: Omi Kogyo Co., Ltd.Inventors: Takashi Omi, Takashi Tsuchiya
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Patent number: 5484473Abstract: 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: GrantFiled: July 19, 1994Date of Patent: January 16, 1996Inventor: Luigi Bontempi
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Patent number: 5407469Abstract: An improved air ionizing apparatus that may be used as part of an air filtering system. The apparatus consists of an air passageway with at least one negatively charged ionizing member therein and a conductive strip, positively charged with respect to the ionizing member extending around at least a major portion of the interior periphery of the outlet of the passageway. The conductive strip attracts the negative ions, causing them to disperse as air directed down the passageway propels them toward and through the outlet of the passageway.Type: GrantFiled: December 20, 1993Date of Patent: April 18, 1995Assignee: Sunova CompanyInventor: Chien Sun
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Patent number: 5254155Abstract: A wet electrostatic precipitator device is provided which has a plurality of hexagonal honeycomb collector passage ways, a corresponding mating plurality of stationary rod elements to be centrally located at axes of each said hexagonal honeycomb collector passage ways and a set of bands integrally formed with a multiplicity of the ionizing blades which protrude from the surfaces of each of the stationary rod elements. The geometry of the design has a high degree of efficiency, while at the same time causes the ionizing blades to maintain their electrostatic charging characteristics under a harsh set of environmental conditions.Type: GrantFiled: April 27, 1992Date of Patent: October 19, 1993Inventor: Fred E. Mensi
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Patent number: 4172723Abstract: In the development of color negatives the same are pre-soaked in an acid-inhibited developing agent bath of typically two to four times normal concentration. Subsequent substantially normal development provides up to 21/2 stops (six times) greater sensitivity of the emulsion after photographic underexposure. Excessive contrast, grain, and fog are minimized, and necessary tracking parallelism of the contrast curves for the three layers of the color-sensitive emulsion is maintained. Deliberate underexposure in studio motion-picture-making can now be allowed, thereby to effect a highly significant saving of electrical energy in stage lighting.Type: GrantFiled: July 18, 1978Date of Patent: October 30, 1979Assignee: De luxe General, IncorporatedInventors: David J. Degenkolb, Fred J. Scobey