Separator Is Single Porous Filter Patents (Class 96/58)
  • Patent number: 10005086
    Abstract: A particulate filtration apparatus for exhaust, combustion or other gases includes an enclosure for the output of a flow of such gases, prior to their release into the outside environment. An internal duct crossed by the flow and affected by a perforated conducting plate is kept at a negative electrical potential, for emission and dispersion in the duct of electrons coupled to polluting particles carried by the flow and substantially constituting the particulate, consequently giving them a negative electrical charge. Along the duct downstream of the perforated plate is an accumulation plate, kept at a positive electrical potential, for the attraction and stable adhesion of the electrically charged particles on the accumulation plate. A conducting filament at a negative electrical potential adjacent at least one opening of the perforated plate is a primary source of emission and dispersion of electrons which are coupled to particles carried by the flow.
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: June 26, 2018
    Assignee: TECNOLOGICA S.A.S DI VANELLA SALVATORE & C.
    Inventor: Salvatore Vanella
  • Patent number: 9993828
    Abstract: A particle separation system for separating particles in an airflow upstream of a detection chamber in an aspirating smoke detector is disclosed. The particle separation system includes an airflow path for directing the airflow from an inlet to an outlet. The airflow path includes a first airflow path section in a first direction and a second airflow path section in a second direction, the first and second directions being different relative to each other. The airflow path also includes at least one electrically charged surface such that the airflow undergoes electrostatic precipitation as it traverses the airflow path. A method of separating particles in an airflow upstream of a detection chamber in an aspirating smoke detector is also disclosed.
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: June 12, 2018
    Assignee: Garrett Thermal Systems Limited
    Inventors: Kemal Ajay, Brian Alexander
  • Patent number: 9873310
    Abstract: Air filtration systems and methods for HVAC units in transport compartments are provided. The air filtration systems and methods described herein use electrostatic forces to capture airborne particles and include a modular design so as to be configured to the space requirements of the transport compartment and reduce air flow resistance. The air filtration system includes one or more modular filtration units. Each of the modular filtration units includes a pre-filter section, an ionizing section and a collecting section.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: January 23, 2018
    Assignee: THERMO KING CORPORATION
    Inventors: Lubos Forejt, Radim Cermak
  • Patent number: 9764331
    Abstract: Filter media for an active field polarized media air cleaner includes two layers of dielectric material with a higher resistance air permeable screen sandwiched between the lower resistivity electric layers. The filter media may further include a mixed fiber filter layer having fibers from different sides of the triboelectric scale. The filter media may further include a layer of relatively higher density dielectric material followed by a layer of relatively lower density dielectric material.
    Type: Grant
    Filed: August 5, 2014
    Date of Patent: September 19, 2017
    Assignee: Environmental Management Confederation, Inc.
    Inventors: Forwood C Wiser, George R. Summers, Benjamin H. Kaeppner
  • Patent number: 9421291
    Abstract: A hand dryer assembly including a blower assembly for generating a moving air stream. The moving air stream passes through an air channel to an air outlet where it exits the hand dryer assembly. An ionization assembly is disposed along the air channel and emits charged ions directly into the moving air stream, sanitizing the hands of the user, the moving air steam, and the ambient air that is entrained into the moving air stream.
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: August 23, 2016
    Assignee: Fifth Third Bank
    Inventors: Michael E. Robert, Charles H. Waddell, Joseph A. Christiansen
  • Patent number: 9327293
    Abstract: An electrode support for an electrode of an electrically-enhanced air filtration system includes a conductor extending through the electrode support and electrically connectible to the electrode and to a power supply. An insulative layer is located around the conductor and the electrode support is configured to position the electrode in a frame of the air filtration system. An air filtration system includes a frame directing an airflow through the air filtration system and an electrode located in the frame. An electrode support positions the electrode in the frame and includes a conductor extending through the electrode support and electrically connected to the electrode and an insulative layer located around the conductor. An electrical power supply is electrically connected to the conductor to provide electrical power to the electrode.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: May 3, 2016
    Assignee: CARRIER CORPORATION
    Inventors: Peter Johannes McKinney, Ronald L. Bowman
  • Patent number: 9089848
    Abstract: The switching device for an air purifier contains a circuit board, a timing and switching module, a manual switch, a fan module, a positive and negative ion production module, and a negative ion production module. The timing and switching module is configured on the circuit board, and the fan module is electrically connected to the circuit board. The two ion production modules are electrically connected to the timing and switching module and the manual switch. Under an automatic mode, the two ion production modules are activated alternately whereas, under a manual mode, the positive and negative ion production module is activated alone, thereby achieving greater flexibility.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: July 28, 2015
    Assignee: Tsung Shin International Co., Ltd.
    Inventor: Tsung-Hui Lin
  • 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
  • Publication number: 20140366735
    Abstract: Disclosed is an air filter device having a high-voltage power transmission wire column. The device comprises: a filter paper, a filter frame, a net base, an ion filament arranged below the filter paper, and a discharge net arranged below the ion filament; the ion filament being installed on an ion filament component, the ion filament component being made of a net-shaped insulation material and being fixed onto the net base; the filter paper being fixed onto the filter frame, and the filter frame being cooperatively connected to the net base; wherein: the discharge net is provided with a ceramic insulating column, a top portion of the ceramic insulating column is connected to the ion filament component, the ceramic insulation column has a hollow through cavity, and a high-voltage connection wire of the ion filament passes through the cavity of the ceramic insulating column.
    Type: Application
    Filed: July 3, 2012
    Publication date: December 18, 2014
    Inventor: Bing Zhao
  • Patent number: 8869796
    Abstract: An air filter (1) particularly for use in a ventilator device for assisting respiratory function comprises: (i) a housing (3) with an air inlet (4) and an air outlet (6), and (ii) a filter material (8) in the path of air flow from the inlet (4) to the outlet (6). The filter material (8) is formed as a tubular body located at one of its ends around the air outlet (6) and being blanked (13) at its end opposite the air outlet (6). The air filter (1) further incorporates an electrostatically charged material (10) positioned at the blanked end (13) of the tubular body (8) to treat inlet air to the housing (3). This improves the life of the filter.
    Type: Grant
    Filed: October 17, 2007
    Date of Patent: October 28, 2014
    Assignee: Air Safety Limited
    Inventor: Ian Wood
  • Patent number: 8765072
    Abstract: Superior hydroxyls are provided which have effects on organic and inorganic compounds and/or pollutants over substantial periods of time and/or at substantial distances from where the superior hydroxyls are generated. Also provided is a hydroxyl generator, in which UV-lamps are positioned such that the coronas which they produce when emitting UV-radiation fill substantially all of the interior space of the hydroxyl generator. The coronas overlap each other by a maximum amount of between 5% and 25% of the radius of each corona.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: July 1, 2014
    Assignee: HGI Industries, Inc.
    Inventor: Guy J. E. Morneault
  • Publication number: 20130233172
    Abstract: An electrostatic precipitation air cleaner to reduce ozone output is provided. The electrostatic precipitation air cleaner includes a housing with an air inlet and outlet. Located in the housing are an air mover for moving a stream of air along an airflow path between the inlet and the outlet, an ion emitter electrode positioned in the airflow path downstream of the inlet for ionizing particulates entrained in the stream of air, a collector electrode having an inlet downstream of the ion emitter electrode, and an intermediate element intermediate the ion emitter electrode and the collector electrode. The collector electrode is comprised of a plurality of collector plates spaced apart in a direction transverse to the airflow path. The plates are electrically biased to create and maintain an electric field in the space therebetween to precipitate ionized particulates entrained in the stream of air onto a confronting surfaces of the plates.
    Type: Application
    Filed: March 1, 2013
    Publication date: September 12, 2013
    Applicant: Lasko Holdings, Inc.
    Inventors: Philippe J. Genereux, Rudy A. Vandenbelt
  • Publication number: 20120325084
    Abstract: Electrostatic aerosol in vitro exposure systems and methods are disclosed and can be used for collecting and depositing particulate matter onto tissue without pre-concentration, and without any intermediate collection steps such as use in water or on a filter. The system can include an inlet configured to receive air containing particulate matter, a receptacle configured to hold one or more tissue samples, a porous membrane providing support for an air-liquid interface of the tissue sample, and an electrostatic precipitation area. Particulate matter contained in the air received at the inlet can be electrically charged in the electrostatic precipitation area and flowed over the tissue sample, where it can be collected and measured.
    Type: Application
    Filed: July 26, 2012
    Publication date: December 27, 2012
    Inventors: Kenneth G. Sexton, Harvey E. Jeffries, Ilona Jaspers, David H. Leith, Glenn W. Walters, Melanie Lynn Doyle-Eisele, Kim M. Lichtveld, Sandra W. Irwin, James J. Jetter, Seth M. Ebersviller, William Vizuete, Jose Zavala Mendez
  • Patent number: 8337600
    Abstract: An electrostatic precipitator for removing solid and liquid components from an aerosol includes a precipitator housing having a raw gas inlet for an aerosol to be cleaned, a clean gas outlet for cleaned aerosol, and at least one aerosol supply channel flange-mounted to the raw gas inlet, a drain device for solid and liquid components that are separated from the aerosol, an ionization stage externally powered via a high-voltage bushing and including at least one metallic high-voltage rod that extends into a flow path of the aerosol and to which high voltage is applyable, and a collector stage disposed in the flow path downstream of the ionization stage.
    Type: Grant
    Filed: January 14, 2009
    Date of Patent: December 25, 2012
    Assignee: Karlsruher Institut Fuer Technologie
    Inventors: Hanns-Rudolf Paur, Andrei Bologa, Klaus Woletz
  • Publication number: 20120102926
    Abstract: A method and a device for treating exhaust gas containing particles, include a particle separator and at least one particle agglomeration device positioned upstream of the particle separator in exhaust gas flow direction. The particle agglomeration device includes at least one apparatus for forming an electrical field and a particle buffer storage device, through which the exhaust gas can flow. The particles are stored on top of each other at the particle buffer storage device in such a way that particle agglomerates are formed, which are removed from the particle buffer storage device again after a short period of time and supplied to the particle separator for conversion. A motor vehicle having the device and performing the method is also provided.
    Type: Application
    Filed: December 19, 2011
    Publication date: May 3, 2012
    Applicant: EMITEC GESELLSCHAFT FÜR EMISSIONSTECHNOLOGIE MBH
    Inventor: WOLFGANG MAUS
  • 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: 20110162526
    Abstract: Provided is a two-sided attraction structure that can be used repeatedly with remarkable ease, thereby being free from the problem of material wasting or the like, is free from the problem of energy, and can be employed for various uses including an exhibition/information apparatus and a dust collecting apparatus.
    Type: Application
    Filed: September 10, 2009
    Publication date: July 7, 2011
    Applicant: CREATIVE TECHNOLOGY CORPORATION
    Inventors: Yoshiaki Tatsumi, Hiroshi Fujisawa, Megumu Kawae
  • Publication number: 20100319534
    Abstract: Gases are stored, separated, and/or concentrated. An electric field is applied across a porous dielectric adsorbent material. A gas component from a gas mixture may be selectively separated inside the energized dielectric. Gas is stored in the energized dielectric for as long as the dielectric is energized. The energized dielectric selectively separates, or concentrates, a gas component of the gas mixture. When the potential is removed, gas from inside the dielectric is released.
    Type: Application
    Filed: June 15, 2010
    Publication date: December 23, 2010
    Applicant: LOS ALAMOS NATIONAL SECURITY, LLC
    Inventors: Robert P. Currier, Stephen J. Obrey, David J. Devlin, Jose Maria Sansinena
  • Patent number: 7811348
    Abstract: An airflow shaper for use in an air cleaner is provided according to an embodiment of the invention. The airflow shaper includes a body including a substantially central axis and a raised central region formed on the body. The raised central region transitions an impinging axial airflow into a substantially radial airflow or transitions an impinging radial airflow into a substantial axial airflow.
    Type: Grant
    Filed: August 7, 2009
    Date of Patent: October 12, 2010
    Assignee: Oreck Holdings, LLC
    Inventors: Christopher M. Paterson, Charles W. Reynolds, Paul A. Moshenrose
  • Patent number: 7722707
    Abstract: A discharge unit (30) and a heat exchanger (20) are disposed in an air passageway (15). In the discharge unit (30), a rod-like discharge electrode (31) and a plate-like counter electrode (32) are disposed perpendicular to the flow of air, and lie along the heat exchanger (20). Upon application of voltage to both the electrodes (31, 32), streamer discharge is performed between the electrodes (31, 32), whereby an active species capable of decomposition of a component to be processed is produced.
    Type: Grant
    Filed: February 20, 2006
    Date of Patent: May 25, 2010
    Assignee: Daikin Industries, Ltd.
    Inventors: Toshio Tanaka, Kenkichi Kagawa, Kanji Motegi, Ryuji Akiyama
  • 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
  • Publication number: 20100011532
    Abstract: A filter assembly for use in a cleaning appliance has a first filter portion surrounded by a deformable rim. The first filter portion consists of a non-woven medium. The filter assembly (also includes a second filter portion located downstream of the first filter portion. The first filter portion and the second filter portion are held directly adjacent one another by means of the deformable rim. The filter assembly further includes a third filter portion located upstream of the first filter portion and consisting of a mesh material. The first filter portion and the third filter portion are held directly adjacent one another by means of the deformable rim. The filter assembly has a tab located on a surface thereof to facilitate removal of the filter assembly from a filter housing or a vacuum cleaner.
    Type: Application
    Filed: July 16, 2007
    Publication date: January 21, 2010
    Applicant: Dyson Technology Limited
    Inventors: Ben Thomas Norton, Jacqueline Ruth Frederickson
  • 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
  • Publication number: 20090025402
    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: Application
    Filed: July 25, 2007
    Publication date: January 29, 2009
    Applicant: Y2 ULTRA-FILTER, INC.
    Inventors: PETER J. MELLO, Kenneth B. Tippets, JR., Mark Vanderginst
  • Patent number: 7408759
    Abstract: A module for generating ions in a flowing air stream includes a support structure having a central region adapted to pass a flowing air stream therethrough, and including a plurality of supports for positioning a filamentary ion-generating electrode in a polygonal configuration within the central region. The supports and filament are relatively moveable to wipe the surface of the filament at each support for removing accumulated contaminants on the filament.
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: August 5, 2008
    Assignee: MKS Ion Systems, Inc.
    Inventors: Peter Gefter, Gregory Vernitsky, Scott Gehlke
  • Patent number: 7235120
    Abstract: A battery (16) drives an electric motor (17) which in turn drives a fan (18). A circuit board (20) controls the operation of the motor and fan to maintain the flow rate. Air is drawn through an inlet (22) and out through a vent (24). Foam discs (32) and (34) may extract particles from the air and an electrostatic filter may attract aerosols in the air.
    Type: Grant
    Filed: April 22, 2002
    Date of Patent: June 26, 2007
    Assignee: University of Bradford
    Inventor: John Hugh Dennis
  • Patent number: 7153347
    Abstract: The present invention provides device and method for controlling air cleaning operation, in which an air conditioner with an air cleaner is made to clean air effectively proper to different pollutants. The device includes a memory having a plurality of operation modes set and stored therein for controlling operation of a fan proper to characteristics of air pollution sources, first means for selecting one of the plurality of operation modes stored in the memory, and a controlling part for controlling the fan according to a control program of the operation mode. The method includes the steps of selecting one of a plurality of operation modes, changing setting of an operation time period of the selected operation mode, reading the selected operation mode from the memory, and changing the operation time period of the operation mode to the set value, and controlling the fan according to the value of the changed operation time period and the value of the operation mode read from the memory.
    Type: Grant
    Filed: November 6, 2003
    Date of Patent: December 26, 2006
    Assignee: LG Electronics Inc.
    Inventors: Tae Wook Kang, Jae Keun Lee, Ju Ho Ock
  • Patent number: 7097694
    Abstract: A high performance, high efficiency filter is provided by a multi-stage filter having combinations of tribologically different fibers, nanofibers, and layering.
    Type: Grant
    Filed: December 4, 2003
    Date of Patent: August 29, 2006
    Assignee: Fleetguard, Inc.
    Inventors: Tadeusz Jaroszczyk, Stephen L. Fallon, Byron A. Pardue, Kelly R. Schmitz, Jason E. Dorgan, Thomas P. Sonsalla, Jerald J. Moy, Jeffrey S. Morgan, Kent J. Kallsen
  • Patent number: 6964817
    Abstract: A porous sintered metal comprising voids at least partially communicating with each other, and pores provided in walls of the voids, the porous sintered metal having a BET surface area of 700 cm2/cm3 or more, and an average diameter of the pores being 1 ?m or more when measured by a mercury press-in method. The porous sintered metal is produced by blending a metal powder, a binder and resin particles to prepare a mixture in which the resin particles are dispersed; molding the mixture to provide a green body; selectively extracting the resin particles from the green body with a solvent; debinding the extracted green body by heating; and sintering the debound green body.
    Type: Grant
    Filed: July 14, 2003
    Date of Patent: November 15, 2005
    Assignees: Hitachi Metals, Ltd., Hmy, Ltd.
    Inventors: Kenji Date, Masumi Nakai
  • Patent number: 6936093
    Abstract: A multilayer filter assembly for use inside an electronic enclosure, such as a hard disk drive enclosure containing a rotating disk, is disclosed. The filter assembly provides filtration of air entering the enclosure, as well as air circulating within the enclosure. The filter assembly is generally a single-piece unit that can be formed without a rigid frame, thus allowing the filter assembly to be produced at a reduced cost. In one implementation of the invention, the multilayer filter assembly contains at least two particulate removal layers covering, enclosing, and dividing at least two adsorbent regions. One of the adsorbent regions is configured to be placed flush against an interior wall of the electronic enclosure to allow air to flow in and out of the enclosure, while the other adsorbent region is configured to be placed in an upright position in the enclosure with exposed surfaces that allow airflow through this portion of the filter assembly.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: August 30, 2005
    Assignee: Donaldson Company, Inc.
    Inventors: Katsushi Isogawa, Carl J. Soldner, Kristin Fischer, Vijay K. Garikipati, James P. Hand
  • Publication number: 20040139853
    Abstract: In an apparatus for the purification of a gas which apparatus comprises three-conduit section, that is,
    Type: Application
    Filed: January 2, 2004
    Publication date: July 22, 2004
    Inventors: Andrei Bologa, Thomas Wascher, Hans-Rudolf Paur, Werner Baumann
  • Publication number: 20040118285
    Abstract: An air purifier provides various air purification functions relating to various environmental conditions by increasing a purification function relative to specific contaminants through replacement of a filter based on the environment to be purified. The air purifier includes a main body of a structure allowing air to pass therethrough. A replaceable filter is received into the main body and is replaceable on a basis of the environmental properties of a space to be purified, removing contaminants in the air passing through the main body. Further, the air purifier includes a dust collecting unit to charge dust particles electrically and to collect the dust particles by electrostatic attraction. In addition, a metal filter functions to collect the dust particles charged in the dust collecting unit, and a HEPA filter is used to collect micro-contaminants. The metal filter is positioned in front of the HEPA filter.
    Type: Application
    Filed: August 6, 2003
    Publication date: June 24, 2004
    Applicant: SAMSUNG Electronics Co. Ltd.
    Inventors: Young-Saeng Kim, Chen-Jung Park
  • Patent number: 6723146
    Abstract: A blower apparatus for a vehicle for blowing air into a cabin. The blower apparatus including a case member, various units and airflow passages. The units include an air cleaning unit for cleaning the air, and a component-adding unit for adding air components such as ions to the air. The units have compatible external shapes and sizes for selective installation in almost the same positions in the airflow passages, thereby meeting user needs of changing the function of the blower apparatus simply by arranging the units to the desired positions.
    Type: Grant
    Filed: August 5, 2002
    Date of Patent: April 20, 2004
    Assignee: Denso Corporation
    Inventors: Hitoshi Ninomiya, Yukitaka Abe, Shinji Iwama, Kazutoshi Nishizawa
  • Patent number: 6709495
    Abstract: The invention provides a filter assembly for use in a vacuum cleaner having a first filter portion that includes a foam filter, and a second filter portion located downstream of the first filter portion and containing a HEPA grade filter medium, the first and second filter portions being held directly adjacent one another. The first filter portion also includes an electrostatic filter located on a side of the foam filter facing the second filter portion. The foam filter of the first filter portion is, in use, exposed directly to a dust-laden airflow. The provision of the electrostatic filter on the foam filter eliminates the possibility of dust initially retained by but later released from the foam filter escaping from the first filter portion.
    Type: Grant
    Filed: June 24, 2002
    Date of Patent: March 23, 2004
    Assignee: Dyson Limited
    Inventor: Mark Peter Storer
  • Patent number: 6679940
    Abstract: When an ionization section is taken out of a main body housing of a conventional air cleaner in order to wash the ionization section, an ionization line may be cut by being accidentally touched. In order to avoid this problem, a pre-filter (7) is mounted on a front surface of an ionization and dust collection unit (6) so as to be detachable. The pre-filter (7) is slidably guided by guide furrings (23) in a sub-frame (12), and is mounted on a front surface of the sub-frame (12). When the pre-filter (7) is mounted, ionization lines (15) are not exposed, so that the pre-filter (7) protects the ionization lines (15). When the ionization and dust collection unit (6) is detached from the main body housing, therefore, there is no problem that the ionization lines (15) might be cut by being accidentally touched with worker's hands, for example.
    Type: Grant
    Filed: March 13, 2002
    Date of Patent: January 20, 2004
    Assignee: Daikin Industres, Ltd.
    Inventor: Yasuhiro Oda
  • Patent number: 6602330
    Abstract: An air purification assembly (10) that is adapted to be used in combination with a vehicle incorporating a heating, ventilation and air conditioning (HVAC) system (100). The assembly (10) consists of three elements: an electrostatic stabilizing filter (12), a membrane filter (32) and an electronic ionizer (40). The three assemblies (12, 32, 40) when operating in combination with the HVAC system (100) substantially absorb unpleasant odors, smoke, dust, pollen, mold spores, pet dander and particulate matter produced by a vehicle exhaust emissions.
    Type: Grant
    Filed: December 6, 2001
    Date of Patent: August 5, 2003
    Inventor: Robert M. Allen
  • Patent number: 6497753
    Abstract: A device for cleaning gases includes a housing and a plurality of electrostatic filter units. Each of the filter units have a tube-shaped covering, and the housing has an intake opening at one end and an outlet opening at the other end for gas flow. The filter units have an essentially airtight arrangement within the housing. The filter units combine to form a filter assembly arranged inside the housing such that the assembly can be inserted and removed from the housing in one piece.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: December 24, 2002
    Assignee: Baltic Metalltechnik GmbH
    Inventor: Rudolf Gutmann
  • 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
  • Publication number: 20020129710
    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: Application
    Filed: March 16, 2001
    Publication date: September 19, 2002
    Inventor: Tahsin Ammouri
  • Patent number: 6447731
    Abstract: A cleaning device including a sensor, a circuit board, a fan motor, an optical catalyst glass fiber filter mesh, an anion and ozone generator and a power supply. The cleaning device is able to collect dust and remove odor. Also, the cleaning device is able to generate ozone and natural anion to activate human cells and help in blood circulation. In addition, by means of a USB (Universal Serial Bus) signal cable or IBM PS/2 signal cable, the cleaning device can be connected to a personal computer to serve as a peripheral equipment of the computer and form an environmental quality monitoring system. The computer can show the air quality index of the environment. The index can be presented through image or sound of the computer.
    Type: Grant
    Filed: June 28, 2000
    Date of Patent: September 10, 2002
    Inventors: Shin-Ching Sun, Hubert Chou
  • Patent number: 6355095
    Abstract: A DC/AC air cleaner for a vehicle includes a chassis having a bottom plate and two side plates formed on two sides of the bottom plate, respectively. An insertion slot is defined in the bottom plate, and two inner plates are mounted between the side plates and configured to define a clamping slot, a positioning slot, and an engaging slot. A lower end of a face plate is held by the insertion slot. A lower end of an activated filtering mesh is held by the clamping slot. A lower end of a static discharger is held by the positioning slot, and the lower end of a fan is held by the engaging slot. An upper cover is provided to retain the upper end of the face plate, upper end of the activated filtering mesh, upper end of the static discharger, and upper end of the fan.
    Type: Grant
    Filed: May 22, 2000
    Date of Patent: March 12, 2002
    Inventor: Huang Kuo-Long
  • Publication number: 20010029728
    Abstract: An air purifier (10) is provided having a housing (11) having a grilled air inlet (12), a grilled air outlet (13), and a control panel (14). The air purifier (10) also includes a pre-filter (16), a main filter (17), a blower (18) and a controller (19), all mounted within the housing (11). The controller (19) has a central processing unit having a permanent memory for storing the program instructions for operation and control of the air purifier, a working memory, and a non-volatile memory for the permanent storage of programs and counters. The controller is programmable so as to control the operation of the blower according to time and speed parameters entered into memory.
    Type: Application
    Filed: January 16, 2001
    Publication date: October 18, 2001
    Inventors: Arthur Massey, Larry S. Bias, Francisco J. Carbajal
  • Patent number: 6254668
    Abstract: A device for cleaning static precipitator in which hot air and steam are repeatedly filled into an oil-collecting sink of the static precipitator at different times or at the same time for heating and melting the oil dirt attaching to the static panels, making the oil dirt drop down into a collecting section. The static panels can be harmlessly cleaned up without disassembly or using any scraper. Hot air also serves to shorten the drying time for the static panels.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: July 3, 2001
    Inventor: Mei-Ling Huang
  • Patent number: 6231646
    Abstract: A paint overspray exhaust air filter for air laden with liquid paint overspray particulates being exhausted from an overspray paint booth includes an electrostatic charged or electret media used in conjunction with and positioned downstream of a primary high efficiency, high holding capacity overspray collection filter. The overspray air filter is designed to capture and retain virtually all of that overspray particulates contained in the air stream being exhausted from an overspray paint booth. The upstream overspray collection filter can include a single filter or additionally a secondary filter, but should be optimized to collect the overwhelming majority of the overspray particulates of a given size whereas the downstream electret media is adapted to collect overspray particulates that are smaller than the given size. The upstream overspray collection filter and the electret media can be separated or mechanically attached together.
    Type: Grant
    Filed: March 11, 1999
    Date of Patent: May 15, 2001
    Assignee: Chemco Manufacturing Company, Inc.
    Inventors: Rand Schweizer, James W. Motter
  • Patent number: 6197096
    Abstract: A vacuum cleaner having a reduced velocity chamber with a high velocity air inlet, an electric motor, a rotary mechanism driven by the motor for creating a vacuum in the chamber, an outlet for exhausting air from the chamber, which air flows in a selected path from the air inlet, through the chamber and out the air exhaust outlet and a disposable porous sheet filter layer in the chamber for removing large solid particles from the air. The vacuum cleaner also has an improved filter, wherein the improved filter includes a layer of material to remove very fine air particles and a layer of material to remove odors from the air.
    Type: Grant
    Filed: December 20, 1999
    Date of Patent: March 6, 2001
    Assignee: HMI Industries, Inc.
    Inventor: Mark A. Cartellone
  • Patent number: 6185934
    Abstract: The invention discloses a device for filtering internal combustion engine exhaust gases, comprising an electrostatic filtering chamber equipped with electrostatic filtering means, a line for supplying gases into the chamber, in fluid communication with an inlet of the chamber, at one of the ends of the supply line, the other end of the supply line being provided with an opening having an inlet orifice adapted to allow the penetration of the exhaust gases and of a flow of ambient air for cooling the exhaust gases. In this device, the means for drawing the exhaust gases and the air flow are mounted downstream of an outlet of the chamber, to allow the mixture of air and gases to pass into the said chamber and reject the filtered gases into the environment and a filter for coarse solid particles and droplets derived from the mixture is mounted in the chamber, upstream of the electrostatic filtering means.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: February 13, 2001
    Inventor: Daniel Teboul
  • Patent number: 6149717
    Abstract: An electronic air cleaner (10) includes a housing (20), a mechanical prefilter (30), an electrostatic precipitator cell (40) and at least one germicidal lamp (50). The electrostatic precipitator cell (40) includes a plurality of collector plates (42) for collecting thereon particulate material from the air stream. The germicidal lamp or lamps (50) are disposed to irradiate the collector plates (42) and any particulate material collected thereon with germicidal light to destroy microbial growth that might occur on the particulate material deposited on the collector plates. Reflectors (60) may be provided in operative association with the germicidal lamp or lamps (50) to concentrate the germicidal light unto the collecting surface of the collector plates (42). A post filter (90), disposed downstream with respect to air flow of the lamp or lamps (50), is provided to remove volatile organic compounds from the air flow.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: November 21, 2000
    Assignee: Carrier Corporation
    Inventors: Sunita Satyapal, Antonio Rinaldi, Robert J. Hall, Laurence R. Boedeker
  • Patent number: 6090184
    Abstract: A vacuum cleaner having a reduced velocity chamber with a high velocity air inlet, an electric motor, a rotary mechanism driven by the motor for creating a vacuum in the chamber, an outlet for exhausting air from the chamber, which air flows in a selected path from the air inlet, through the chamber and out the air exhaust outlet and a disposable porous sheet filter layer in the chamber for removing large solid particles from the air. The vacuum cleaner also has an improved filter, wherein the improved filter includes a layer of material to remove very fine air particles and a layer of material to remove odors from the air.
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: July 18, 2000
    Assignee: HMI Industries, Inc.
    Inventor: Mark A. Cartellone
  • Patent number: 6042637
    Abstract: A miniature air purifier produces a corona discharge surrounding a needle-like emitter point connected to a negative DC power supply. The power supply operates from a nine volt battery and contains a step-up voltage inverter having a single transformer outputting high voltage spikes with a voltage multiplier operating on the output of the inverter. The production of high voltage spikes of about 200 Hz rather than a sinusoidally varying voltage significantly reduces current consumption. The needle-like emitter point is located about 1/4-inch from an 80% open mesh metallic grid held at ground potential. Corona discharge at the emitter point ionizes the air and creates ozone, and nitric oxide both of which combine with direct electron impact decomposition to detoxify and destroy a wide variety of airborne pollutants including pathogens, chemicals and allergens.
    Type: Grant
    Filed: September 28, 1998
    Date of Patent: March 28, 2000
    Inventor: Stanley Weinberg
  • Patent number: 6036738
    Abstract: An improved disinfecting air filter that can be used to disinfect air or other gases. The invention can be advantageously used as a standalone to control microorganisms or used with a traditional HEPA filter to effectively control all microorganisms as well as dust particles. The device contains an iodine-donating filter disposed to dispense an effective quantity of iodine vapor into the gas or air stream to be filtered. The iodine laden air then passes through a porous filter of polyvinyl acetal polymer which material has an unusual affinity for iodine and effectively removes it leaving disinfected and iodine-free air or gas.
    Type: Grant
    Filed: December 31, 1997
    Date of Patent: March 14, 2000
    Assignee: Shanbrom Technologies LLC
    Inventor: Edward Shanbrom