Class / Patent application number | Description | Number of patent applications / Date published |
095002000 | Electric or electrostatic field (e.g., electrostatic precipitation, etc.) | 43 |
20100024639 | METHODS FOR OPERATING A FILTRATION SYSTEM - A method of operating a filtration system that filters flue gas, which includes particulate matter and a gaseous pollutant. The filtration system may include a fabric filter, which is cleaned with periodic pulse cleanings, a discharge electrode upstream of the fabric filter, which imparts an electric charge to at least some of the particulate matter before the particulate matter collects on the fabric filter, a sorbent, which is injected into the flue gas upstream of the fabric filter and absorbs at least some of the gaseous pollutant, and a fan, which draws the flue gas through the fabric filter. The filtration system may have a pulse cleaning interval setting that may be manipulated by an operator of the filtration system. The pulse cleaning interval setting may be the time between the pulse cleanings. The method may include the steps of: determining a cost of operating the filtration system at a first pulse cleaning interval setting; determining a cost of operating the filtration system at a second pulse cleaning interval setting; and comparing the cost of operating the filtration system at the first pulse cleaning interval setting with the cost of operating the filtration system at the second pulse cleaning interval. | 02-04-2010 |
20100037766 | METHOD OF CONTROLLING THE ORDER OF RAPPING THE COLLECTING ELECTRODE PLATES OF AN ESP - A method of controlling the dust particle emission from an electrostatic precipitator ( | 02-18-2010 |
20120111188 | HOT SIEVING ELECTROSTATIC PRECIPITATOR - An electrostatic precipitator and a method of removal of particulates from gaseous flows. A plurality of screens, secured in sets within a central chamber in a housing, comprise at least one set of electrically chargeable first screens and at least one set of electrically grounded second screens. For each set of chargeable screens, all the screens of the set are provided with an identical electrical charge, either positive or negative, and the set is provided with a plurality of spikes directed at the oncoming gaseous flow. At least one screen cleaning means selectively acts on the screens of each set. The precipitator can comprise a plurality of central chambers in a single housing or separate housings, and the chambers can be selectively activated or deactivated. The precipitator provides improved particulate removal from gaseous flows, including hot flows having temperatures up to at least 1200° C. | 05-10-2012 |
20120255435 | METHOD OF MODELING FLY ASH COLLECTION EFFICIENCY IN WIRE-DUCT ELECTROSTATIC PRECIPITATORS - The method of modeling fly ash collection efficiency in wire-duct electrostatic precipitators provides for the optimization of fly ash collection through the generation of numerical solutions to the electrostatic and electrodynamic equations associated with the particular geometry of the wire-duct electrostatic precipitator. Particularly, the solutions are developed through use of the finite element method and a modified method of characteristics. | 10-11-2012 |
20140069274 | DETECTION OF ELECTROSTATIC FILTER FOR AIR FILTRATION SYSTEM - An air filtration system includes a frame directing an airflow through the air filtration system and a media filter. The media filter includes a plurality of media fibers arranged to capture particles flowing therethrough and a conductive surface located at the media filter and having a conductivity within a selected range. Two or more contact pads are located at the media filter and are alignable with an electrical circuit located at the frame to determine whether a resistance across the conductive plane is within a selected resistance range. A method of installing a media filter in an air filtration system includes inserting the media filter into a frame of the air filtration system and aligning one or more contact pads of the media filter with one or more grounding pads of the frame. A resistance across the media filter is measured. | 03-13-2014 |
20140144317 | Air Cleaning Systems and Methods - An HVAC system having an air cleaner, a fan configured to selectively generate an air flow, wherein at least a portion of the air flow is passed through the air cleaner, and a controller configured to control the air cleaner in response to at least one of a setting for controlling the fan and an operation characteristic of the fan is disclosed. | 05-29-2014 |
20150075371 | IONIZATION AIR PURIFICATION SYSTEM FOR THE PASSENGER CABIN OF A VEHICLE - An ionization air purification system for the passenger cabin of vehicles, which modifies the degree of ionization by modifying the energy levels applied to the ionization tube or ionization source proportional to the change in air flow dynamics and air quality. In one embodiment, an ionization air purification system for the passenger cabin of a vehicle is disclosed. The system includes an ionization device for purifying the air prior to entering into the passenger cabin of the vehicle; and means for modifying the degree of ionization by modifying the energy levels applied to the ionization tube or ionization source proportional to the change in air flow dynamics and/or air quality. | 03-19-2015 |
20150107449 | ROBOT CLEANER AND METHOD FOR SENSING DUST - A robot cleaner is provided that may include a suction motor installed within a main body to generate a suction force, at least two conductive plates spaced apart from each other to form a flow path for external air introduced by the suction force, and a calculator to measure a capacitance value between the at least two conductive plates. Further, provided is a robot cleaner that may include a suction motor installed within a main body to generate a suction force, a porous structure having at least one through hole, through which external air introduced by the suction force may flow, at least one filter disposed on a surface of the porous structure to filter dust contained in the air, and a power supply configured to apply alternating current (AC) power to at least a portion of the surface of the porous structure. | 04-23-2015 |
20150336109 | WIRE ELECTRODE CLEANING IN IONIZING BLOWERS - Methods and apparatus for cleaning contaminant byproducts off of ionizing wire electrodes in ionizing blowers are disclosed. Disclosed apparatus include a housing with a gas-flow channel, an stationary ionizing wire, and a rotatable frame with supports for resiliently supporting the stationary ionizing wire within the channel. The ionizing wire produces charge carriers and has a surface that develops a layer of contaminant byproducts when an ionizing signal is applied thereto. The frame is rotatably mounted such that the supports clean the layer of contaminant byproducts off of the surface of the ionizing wire when the frame is rotated, by physical and/or by electrical means. Disclosed methods include providing an ionizing signal to the ionizing wire to thereby produce charge carriers and rotating the frame relative to the housing to thereby clean contaminant byproducts off of the ionizing wire. | 11-26-2015 |
20160084508 | TABLETOP COOKING ASSEMBLY - A tabletop cooking assembly for preparing foods thereon comprises a cooking element having a cooking area and a vent disposed peripherally to one side of the cooking element defining an aperture for receiving smoke from the cooking element. The assembly includes a first exhaust duct, a filter assembly, an electrostatic precipitator, and a high velocity blower. The first exhaust duct is substantially unobstructed and in fluid communication with the vent for directing smoke away from the cooking element. The high velocity blower is in fluid communication with the first exhaust duct and the filter assembly for drawing smoke from the cooking element through the vent. The heating system includes a retaining plate, a plurality of heating strips, and an insulating material. The heating strips are disposed between the retaining plate and the heating surface to heat the cooking area for preparing foods thereon. | 03-24-2016 |
20190143339 | CHARGER, ELECTRIC DUST COLLECTOR, VENTILATOR, AND AIR CLEANER | 05-16-2019 |
095003000 | Concentration sensed | 13 |
20090031895 | Method for Producing Oxygen, From Air, Particularly Using an Electrochemical Cell with Ceramic Membrane, with Control Means for Continuous Production - Method for producing oxygen from air, in which, for this purpose, a generator is used that generates oxygen at its outlet, from air introduced at its inlet. | 02-05-2009 |
20090038473 | Air filter, elevator having the same and air conditioning control method thereof - An air filter, an elevator having the same, and an air conditioning control method thereof purify the air inside the elevator to make the air safe and pleasant using a micro plasma ion generator (MPI). The elevator includes a cage which moves up and down in a vertical direction of a building and an air filter which purifies the air inside the cage. The air filter includes an ion generator which generates ions by a plasma discharge to discharge the ions into the cage, a dust sensor which detects a dust contamination level in the cage, and a controller which compares the dust contamination level detected by the dust sensor with a predetermined standard contamination level and operates the ion generator If the dust contamination level is equal to or greater than the predetermined standard contamination level. | 02-12-2009 |
20090272263 | ELECTRICALLY REGENERATED EXHAUST PARTICULATE FILTER HAVING NON-AXIAL REGENERATION FLAME PROPAGATION - An exhaust particulate filter for an engine system includes an array of filter cartridges positioned within a shell, each of the cartridges having an electrically powered heating element coupled therewith. Exhaust gases may be distributed among the cartridges according to a single distribution pattern, and the filter can be regenerated without diverting, dividing or bypassing exhaust gases from the filter. The filter cartridges may be cylindrical or wedge-shaped, or of a variety of other configurations. Regeneration may take place according to a non-axial regeneration propagation profile. Other aspects include feedback control and feedforward control of regeneration based on sensing an electrical resistance property of each of the electrically powered heating elements. | 11-05-2009 |
20100000404 | Particulate matter detection device and particulate matter detection method - A particulate matter detection device includes a collection electrode that collects the particulate matter, a discharge electrode that allows a corona discharge to occur when a voltage is applied between the collection electrode and the discharge electrode, a measurement electrode, the impedance between the collection electrode and the measurement electrode changing when the collection electrode has collected the particulate matter, and a measurement section that detects a change in the impedance between the collection electrode and the measurement electrode, the particulate matter detection device detecting the particulate matter by charging the particulate matter contained in the gas by utilizing the corona discharge, collecting the charged particulate matter by the collection electrode by utilizing an electrostatic force, and detecting a change in the impedance between the collection electrode that has collected the particulate matter and the measurement electrode using the measurement section. | 01-07-2010 |
20100071548 | Method of Treating Gas - In a method of treating a gas exhausted from a process chamber, the exhaust gas is conveyed to a vacuum pump ( | 03-25-2010 |
20100116126 | EXHAUST GAS PURIFYING METHOD AND APPARATUS - A system is provided that prevents inhibition of adsorption of Hg and other heavy metals by activated carbon or other heavy metal adsorbent due to prior adsorption of sulfur trioxide (SO | 05-13-2010 |
20100139481 | METHOD OF TREATING A GAS SYSTEM - In a method of treating a gas stream, an aqueous scrubbing liquor is circulated through an essentially closed loop ( | 06-10-2010 |
20110277627 | ION AND OZONE OPTIMIZING SATURATION METHOD FOR INDOOR AIR - The present invention relates to an ion and ozone optimizing saturation method for indoor air. According to the method of the present invention, voltage serial pulses of one polarity type are fed to discharge ionization electrodes, and then voltage serial pulses of another polarity type are sequentially fed after a pause longer than the time for mutual recombination of anions and cations. At this time, the concentration of ions of different polarities is adjusted by changing the pulse repetition rate of a voltage pulse in a serial pulse, duration of serial pulses of the respective polarities and duration of the pause. Additionally, a voltage pulse is fed to the discharge ionization electrodes, and simultaneously or optionally, a voltage pulse having sufficient amplitude to generate a capacity type corona discharge between electrodes during the pause between serial pulses of different polarities is fed to ozonization electrodes. At this time, a concentration of ozone is adjusted by changing the duration of voltage supply to the ozonization electrodes. | 11-17-2011 |
20110303086 | AIR PRE-TREATMENT DEVICE - The present technology provides an air pre-treatment and monitoring device that includes an inlet port configured to receive an air flow and an outlet port configured to expel the air flow. The illustrative air pre-treatment device further includes a multiple-stage filter arranged between the inlet and outlet ports and that is configured to filter particles from the air flow. | 12-15-2011 |
20120073433 | SYSTEMS AND METHODS FOR OPTIMIZING A PAC RATIO - An exemplary embodiment of the present invention provides a method of controlling a PAC-to-particulate ratio in a potion of an exhaust system from a furnace. The method comprises measuring a second amount of particulate exiting a particulate removal system, and controlling a first amount of particulate removed by the particulate removal system based in part on the measured second amount of particulate, such that a desired ratio of PAC-to-particulate is obtained in the portion of the exhaust system. | 03-29-2012 |
20130255482 | ELECTRICALLY-DRIVEN PARTICULATE AGGLOMERATION IN A COMBUSTION SYSTEM - Technologies are presented for applying electrical energy to a combustion reaction to produce agglomerated combustion particulates. For example, a system may include: one or more electrodes configured to apply electrical energy to a combustion reaction; a combustion zone configured to support the combustion reaction of a fuel at a fuel source; and an electrical power source operatively coupled to the one or more electrodes and configured to apply electrical energy to the combustion reaction. The combustion reaction is controlled to produce a distribution of agglomerated combustion particulates characterized by an increase in at least one of an average particulate diameter or an average particulate mass. | 10-03-2013 |
20150360234 | METHODS TO SUBSTANTIALLY OPTIMIZE CONCENTRATION OF MATERIALS IN AN OUTPUT STREAM - A system, method, and computer readable medium are provided that monitors at least one of an input and output stream for at least one of a presence of a material of interest and a concentration of the material of interest; when the material of interest is present and/or has at least a threshold concentration, directs the at least one of an input and output stream to a waste location or path to discard the material of interest; and when the material of interest is either not present or does not have at least a threshold concentration, directs the at least one of an input and output stream to a byproduct location or path to recover the material of interest. | 12-17-2015 |
20160175851 | ELECTRICALLY-DRIVEN PARTICULATE AGGLOMERATION IN A COMBUSTION SYSTEM | 06-23-2016 |
095004000 | Temperature sensed | 3 |
20100313747 | METHOD AND DEVICE FOR CONTROLLING AN ELECTROSTATIC PRECIPITATOR - The disclosure relates to a method or device for controlling the operation of an electrostatic precipitator, ESP. The ESP is used to remove dust particles from a process gas, which is generated by a combustion process. An indicator signal is generated, typically by means of a temperature sensor, which signal is indicative of the temperature of combustion air, which is fed to the combustion process. The ESP is operated in a manner depending on the indicator signal. Thereby back-corona effects may be avoided to a great extent. | 12-16-2010 |
20110192280 | METHOD AND A DEVICE FOR CONTROLLING THE POWER SUPPLIED TO AN ELECTROSTATIC PRECIPITATOR - A method of controlling the operation of an electrostatic precipitator ( | 08-11-2011 |
20110197759 | METHOD OF TREATING A GAS STREAM - A method is described for treating gas exhaust from a polysilicon etch process, which uses a plasma abatement device to treat the gas. The device comprises a stainless steel gas chamber having a gas inlet for receiving the gas and a gas outlet. As the gas may contain a halocompound and water vapour, the chamber is heated to a temperature that inhibits adsorption of water on the surface within the chamber, thereby inhibiting corrosion of the gas chamber. The gas is then conveyed to the gas chamber for treatment, and the temperature of the chamber is maintained above said temperature during treatment of the gas. | 08-18-2011 |
095005000 | Sparking sensed | 4 |
20080202331 | ELECTROSTATIC PRECIPITATOR HAVING A SPARK CURRENT LIMITING RESISTORS AND METHOD FOR LIMITING SPARKING - An electrostatic precipitator including: a collecting electrode in a gas passage; a discharge electrode in the gas passage and separated by a gap from the collecting electrode; a power supply applying a voltage to the discharge electrode, wherein the voltage establishes an electric field between the discharge electrode and the collecting electrode to ionize gas flow in the gap, and a resistor in series with the discharge electrode and having an effective resistance in series with the discharge electrode of at least 50 Ohms. | 08-28-2008 |
20100037767 | METHOD OF ESTIMATING THE DUST LOAD OF AN ESP, AND A METHOD AND A DEVICE OF CONTROLLING THE RAPPING OF AN ESP - A method of controlling the rapping of at least one collecting electrode plate ( | 02-18-2010 |
20100116127 | SYSTEM AND METHOD FOR LOCATING SPARKS IN ELECTROSTATIC PRECIPITATORS - A system includes an electrostatic precipitator, an electromagnetic sensor and a processor to locate spark locations. The electromagnetic sensor is used at various locations of the electrostatic precipitator to obtain data and process the same for locating sparks in electrostatic precipitators. | 05-13-2010 |
20110005388 | Electrostatic Precipitator Having a Spark Current Limiting Resistors and Method for Limiting Sparking - An electrostatic precipitator including: a collecting electrode in a gas passage; a discharge electrode in the gas passage and separated by a gap from the collecting electrode; a power supply applying a voltage to the discharge electrode, wherein the voltage establishes an electric field between the discharge electrode and the collecting electrode to ionize gas flow in the gap, and a resistor in series with the discharge electrode and having an effective resistance in series with the discharge electrode of at least 50 Ohms. | 01-13-2011 |
095006000 | Current sensed | 8 |
20080264249 | Precipitator Energisation Control System - The energisation of an electrostatic precipitator is controlled in order to reduce arcing and/or back corona between the precipitator electrodes, using the precipitator current as a feedback parameter. A high speed switching device is used to control the energisation of the precipitator electrodes so that the precipitator current is regulated to a desired level with a response time that is significantly less than the arc generation time constant. The energisation is controlled so that the precipitator current is regulated to a predetermined value below the current level at which arcing occurs. The energisation response is proportional to the severity of the arcing, which can be based on the power and frequency of arcing. If back corona is detected, the energisation can also be controlled to reduce back corona. | 10-30-2008 |
20100269691 | AIR QUALITY ENHANCEMENT SYSTEM - A system for enhancing air quality within a poultry production facility that includes an enclosure, at least one ground plane, at least one corona point and a corona point position adjustment mechanism. The enclosure is adapted to receive a plurality of poultry. The at least one ground plane is mounted with respect to the enclosure. The corona point position adjustment mechanism enables a distance between the at least one corona point and the at least one ground plane to be adjusted. | 10-28-2010 |
20110308384 | AIR QUALITY ENHANCEMENT SYSTEM - A system for enhancing air quality by collecting airborne particles. The system includes at least one ground plane, at least one corona point, an ionization field strength adjustment mechanism and a cleaning mechanism. The at least one ground plane is operably mounted proximate to where the airborne particles are present. The at least one ground plane includes at least one ground plane surface. The least one corona point operably is mounted to the at least one ground plane for causing an accumulation of particles to be deposited on the at least one ground plane surface. The ionization field strength adjustment mechanism enables a distance between the at least one corona point and the at least one ground plane to be adjusted. The cleaning mechanism is capable of removing the accumulation of particles from the at least one ground plane surface. | 12-22-2011 |
20120085230 | GAS ELECTROSTATIC COALESCER - An electrostatic coalescer includes an outer wall defining a flow path for receiving a process fluid comprising primarily a gas, a power source, and a plurality of electrode plates coupled to the power source to generate an electrical field across the flow path. | 04-12-2012 |
20120103184 | ELECTROSTATIC FILTRATION SYSTEM - This application describes a method and apparatus for removing a wide range of particles from a source of gas flow or separation of particulates from dust, mist, or vapor generating devices. An innovative use of open porous materials, which causes little pressure drop, in combination with an electrostatic grids structure is described. The apparatus is capable of removing particulates in the size range 0.01 to 1 micrometer with efficiencies as high as 99.5%. A key feature of the apparatus is that the air to be purified flows parallel to the filters instead of through them, which results in very low power consumption. | 05-03-2012 |
20120255436 | CONTROL METHOD AND APPARATUS - A method and apparatus for controlling the electrical power applied to an electrically driven oxygen separation device having one or more composite membrane elements to separate oxygen from an oxygen containing feed. The composite membrane elements have a resistance increasing during the operation thereof that would act to reduce oxygen output if applied voltage were held constant. In order to increase the time interval for renewing the composite membrane elements, the electrical potential difference is controlled such that the electric current drawn by the elements remains at a substantially constant level by increasing the electrical potential difference as the resistance increases until a predetermined voltage level is reached. Once this level is obtained, the electrical potential difference is maintained at a constant level and the electric current being drawn and the oxygen output is allowed to decay to a predetermined low level after which the element or elements are replaced. | 10-11-2012 |
20140102295 | CURRENT MONITORING IN ELECTRICALLY ENHANCED AIR FILTRATION SYSTEM - A filtration system includes a frame directing a fluid flow through the filtration system. An ionization array is located in the frame and has an ionizer current flowing therethrough. The system further includes a media filter having a plurality of media fibers arranged to capture particles flowing therethrough and a conductive surface located at the media filter and having a filter current flowing therethrough. A comparator is utilized to determine a difference between the ionizer current and the filter current, and compare that difference to a predetermined range. | 04-17-2014 |
20160193612 | SEPARATING PRIMARILY GAS PROCESS FLUIDS IN AN ELECTROSTATIC COALESCER | 07-07-2016 |
095007000 | Voltage sensed | 4 |
20080196579 | METHOD AND APPARATUS FOR THE ACCELERATION OF AN ELECTROMAGNETIC RAPPER - A method for the acceleration of an electromagnetic rapper, particularly for an electrostatic precipitator, which includes a metal cylinder as a hammer, an electrical coil for lifting the metal cylinder and a coil energizer for energizing the electrical coil. For cleaning a surface the metal cylinder is lifted by an initial electrical pulse generated by the coil energizer. The coil energizer supplies the electrical coil with an additional electrical pulse so that the metal cylinder is accelerated when it has reached the maximum point of its trajectory. | 08-21-2008 |
20130269518 | DEVICE AND METHOD FOR PURIFYING AIR FROM NON-DESIRED COMPONENTS AND FOR ELIMINATING SUCH COMPONENTS - A device for purifying air from non-desired gases and particles, in the case of nuclear power plants from radiating particles and gaseous iodine, and for extermination of microorganisms and removal from the air. The device includes a purifying chamber through which the air to be purified is arranged to flow. In the structurally grounded purifying chamber ionized air ( | 10-17-2013 |
20140096680 | PASSIVELY ENERGIZED FIELD WIRE FOR ELECTRICALLY ENHANCED AIR FILTRATION SYSTEM - An air filtration system includes a frame directing an airflow through the air filtration system and a power supply. An ionization array is located in the frame across the airflow and connected to the power supply. The power supply provides a first voltage to the ionization array. A field wire is located in the frame downstream from the ionization array and is energized to a second voltage only by an electrical energy discharge from the ionization array. A method of operating an electrically enhanced air filtration system includes energizing an ionization array, located across an airflow through the air filtration system, to a first voltage via electrical power supplied by a power supply. Electrical energy is discharged from the ionization array into the airflow. A field wire downstream of the ionization array is energized to a second voltage only by the discharge of electrical energy from the ionization array. | 04-10-2014 |
20150082980 | Purification and Variable Frequency System and Method - An air cleaning apparatus includes ion generation electrode, a collecting electrode, and a support portion. The ion generation electrode is configured to apply a high-voltage to thereby form a high-voltage electric field between the collecting electrode and the ion generation electrode. A passage is formed between the ion generation electrode and the collecting electrode along the high-voltage electric field direction. The support portion is configured to provide electrical isolation and mechanical support for the ion generation electrode and the collecting electrode. A surface of the support portion between the ion generation electrode and the collecting electrode comprises a surface coating layer configured to resist ion bombardment and the accidental arcing. A transformer frequency adjusting system includes a frequency storage cell, a control module, and a drive module, and can work with the air cleaning apparatus, alone, or with other apparatuses. | 03-26-2015 |