273results about "Emergency control systems" patented technology

Provided is an air purifier capable of increased air purification properties due to charged particles being blown out. A first air-blower blasts air, thus drawing air in from the outside to a first air-flow path, and an air-purification unit purifies the air and blows out same. A second air blower blasts air, thus drawing air in from the outside to a second air-flow path, and the air is blown out together with charged particles generated by a charged particle generator. A control unit controls the amount of air blasted by the second air-blower, according to the amount of air blasted by the first air-blower. Alternatively, the control unit controls the angle to be adjusted by the regulator, according to the amount of air blasted by the first air-blower.

An onsite chemistry air filtration system to remove gaseous contaminants from air is disclosed. The onsite chemistry air filtration system of the present invention comprises: a conventional particulate filtration section, a photochemical filtration section, a static gas phase filtration section and a catalytic filtration section. The conventional particulate filtration section captures solids and condensables. In the photochemical filtration section, UV lamps generate bio-destruction and surface photochemical activity on a semiconductor catalyst material, provide a radiation source to irradiate airborne contaminant molecules and to energize their states to promote reactions and generate airborne ozone and radicals. In the static gas phase filtration section, gas phase filtration media is used to capture contaminants, concentrate them in a relatively confined space and allow airborne generated chemistries to concentrate and react in-situ, thereby creating a regeneration effect on the media. In the catalytic filtration section, catalytic media scavenges and converts airborne radicals and ozone to harmless by-products.

An electro-mechanical electrostatic air cleaner that combines a low air resistance dielectric fibrous filter material positioned between and electrically charged by two electrically resistant carbon coated screens. The screens are charged by a remotely mounted bi-polar power supply. A pair of post ionization electrodes charge particles in the air with opposite charges, causing the particles to agglomerate. A plurality of screens may be placed in an array for increased one-pass filtration.

A bypass factor of an evaporator is used to indicate when an air filter of an HVAC is clogged. The bypass factor represents the amount of air that is bypassed without direct contact with the evaporator. As the air filter clogs, the bypass factor decreases. The bypass factor can also be used for early detection of clogging of the air filter. A first bypass factor is calculated by using the temperature measurements, and a second bypass factor is calculated by using the airflow rate of the air. The difference between the two bypass factors determines the error. An increase in the error indicates that the air filter is clogged. A coefficient of performance of the evaporator can also be calculated to detect if the air filter is clogged. A decrease in the coefficient of performance indicates that the air filter is clogged.

An intense field dielectric air filtration system associated with an air conditioning unit includes a microprocessor based control system which may be connected to the thermostat of the air conditioning unit to energize the air filtration system in response to a call for heat or cooling signal at the thermostat or startup of the fan motor for the air conditioning unit. The control system includes a power supply for the air filtration system together with voltage and current monitoring circuits for detecting a fault condition. Filtration system on / off and timing function reset switches are connected to the microprocessor and visual displays, including a multicolored LED bargraph display, are controlled by the microprocessor to indicate voltage potential applied to the air filtration system, a fault condition or a test mode.

The present invention relates to an oxygen concentrator in which a pulsation detection device for detecting pulsation of oxygen supplied and a control device for controlling an amount of air supplied from a compressor based on the detection results in a pressure swing adsorption-type oxygen concentrator, which is equipped with an adsorption bed filled with an adsorbent capable of selectively adsorbing nitrogen relative to oxygen, the compressor for supplying air to the adsorption bed, a channel switching valve to repeat in a constant timing an adsorption step, in which air is supplied from the compressor to the adsorption bed to isolate concentrated oxygen and a desorption step, in which the adsorption bed is evacuated to regenerate the adsorbent and a flow rate measuring device for determining a supply flow rate of concentrated oxygen produced and an amount of oxygen produced is controlled by a feedback with a flow rate sensor by itself after paying attention to variation of a product flow rate caused by suppressing an amount of oxygen produced, thereby realizing an apparatus to satisfy secondary performance such as miniaturization, low power consumption and silencing.

A spark management device includes a high voltage power source and a detector configured to monitor a parameter of an electric current provided to a load device. In response to the parameter, a pre-spark condition is identified. A switching circuit is responsive to identification of the pre-spark condition for controlling the electric current provided to the load device so as to manage sparking including, but not limited to, reducing, eliminating, regulating, timing, and / or controlling any intensity of arcs generated.

An air filtration system includable in and for HVAC equipment includes one or more intense field dielectric filter units and a field charging unit retained in a support structure or cabinet by a removable door which includes control circuitry and contactors engageable with corresponding contact members on a filter unit and the field charging unit for supplying high voltage DC potential to the respective units. Each filter unit includes a filter core comprising a stacked array of filter elements formed of dielectric sheets interconnected by elongated spaced apart ribs forming flow passages. The field charging unit and the filter units are removable from the support or cabinet for cleaning or replacement by opening or removing the door. An interlock switch and a field shorting mechanism are actuated during servicing or replacement of the system components.

Disclosed is an air purification filter with novel active media that attracts, migrates, binds, and destroys pathogens, including sub-micron pathogens, that are suspended in the air passing through the filter. These properties are incorporated in the micro-fibers comprising the active filter media by several novel methods. One embodiment uses polymers or solgel bound monomers of quaternary ammonium compounds as a biocide with both chemotactic and pathogen membrane lysing properties. Another embodiment uses biocide chemicals blended into the melt before filter fibers are extruded and electret dipole charged. The attracting-binding properties of the embodiments may be enhanced by including electropositive Boehmite nano-fiber strands in the active media, by coating a reversible voltage charged electro-conductive polymer, by the use of supplemental fusing and lysing chemicals, and by optional ion field charging of incoming pathogens.

This invention relates to a method of sterilizing air that contains airborne pathogenic agents or microorganisms such as spores, bacteria, viruses, yeasts and moulds The method consists in damaging and braking up the contaminant molecular structure by oxidation and ionization and chemical bond rupture. Through this process the microorganisms or the contaminants are inactivated through structural damages to the cellular membrane and / or the nucleus membrane and / or to the DNA structure. This is accomplished by creating through the air to be treated, various electronic current having a plurality of specific controlled average kinetic energies matching the desired chemical bonds to be affected and / or ruptured. The air interaction with such various currents, having specific energies, sufficient intensities and exposition time is accomplished through several stages to completely sterilize the air or gas. The air or gas is then processed to remove undesirable by-products that may be present so that it can be used directly or stored.

A device for handling a fluid includes a corona discharge device and an electric power supply. The corona discharge device includes at least one corona discharge electrode and at least one collector electrode positioned proximate each other so as to provide a total inter-electrode capacitance within a predetermined range. The electric power supply is connected to supply an electric power signal to said corona discharge and collector electrodes so as to cause a corona current to flow between the corona discharge and collector electrodes. An amplitude of an alternating component of the voltage of the electric power signal generated is no greater than one-tenth that of an amplitude of a constant component of the voltage of the electric power signal. The alternating component of the voltage is of such amplitude and frequency that a ratio of an amplitude of the alternating component of the highest harmonic of the voltage divided by an amplitude of the constant component of said voltage being considerably less than that of a ratio of an amplitude of the highest harmonic of the alternating component of the corona current divided by an amplitude of the constant component of the corona current, i.e., (Vac / Vdc)≦(Iac / Idc).

There is provided a fine particle sensor for detecting fine particles in exhaust gas, including an ion generating unit for generating ions by corona discharge, a charging unit for charging the fine particles by some of the generated ions, an ion trapping ions for trapping a remainder of the generated ions and a casing for accommodating therein the charging unit and the ion trapping unit in a given arrangement direction. The casing has a gas inlet hole and a gas outlet hole formed in a circumferential wall thereof so that the exhaust gas flows in the charging unit through the gas inlet hole and flows out of the ion trapping unit through the gas outlet hole. The gas inlet hole and the gas outlet hole are arranged in such a manner as to at least partially overlap each other when viewed in the given arrangement direction.

Systems and methods are provided for an air purifier with over pressurization relief, including the following components. A room air inlet is configured to fluidly receive air from a room. A supply duct inlet is configured to fluidly receive air from a forced air system. An air filter and or air purification means is configured to filter / purify air. An outlet is configured to expel filtered / treated air into the room. A bypass damper system has at least one air filtering mode position and a bypass mode position. A pressure control mechanism is configured to automatically allow the bypass damper system to move from at least one air filtering mode position to a bypass mode position when the air received from the supply duct inlet exceeds a bypass threshold. The bypass mode position guides air from the supply duct inlet into the room without requiring passage through the filter and the outlet.

An apparatus for controlling odor within a refrigeration appliance is provided. The apparatus includes a frame removably positioned within an airflow path configured to supply cooled air to a food storage compartment of the refrigeration appliance. The frame defines a chamber. A filter medium is positioned within the chamber. The filter medium is configured to filter air channeled therethrough and remove odorous molecules.

Aspects of the invention include a method and apparatus for reversibly sorbing a target gas. In one embodiment, an apparatus for reversibly sorbing a target gas is disclosed. The apparatus includes an inlet, a multi-channel monolith coupled to the inlet, the multi-channel monolith including a plurality of channels, each one of the plurality of channels includes one or more walls, wherein at least one of the one or more walls of at least one of the plurality of channels is porous and wherein one or more of the plurality of channels contain a sorbent and an outlet coupled to the multi-channel monolith.

Filter for application in motor vehicles in general, urban or rural use, terrestrial, aquatic or aerial use, such as car, motorcycle, truck, bus, train, boat, ship, vessel, airplane, jet ski, snowmobile, tractor, any vehicle or machine powered by a combustion engine, electric, hybrid, hydrogen, gasoline, methanol, ethanol, butanol, diesel, kerosene, or any other technology or fuel, which can also be applied to any equipment using a combustion engine, like generators or turbines for stationary power generation, large water pump and agricultural equipment use, and aircraft powered by turbo-jets, turbo-fans, turbo propellers, piston engines or others, and may also provide versions for residential, commercial, industrial and hospital use, among others, with the addition of a power supply (transformer) on the power input and a possible adjustment in a cabinet with appropriate design for each use.

A method and apparatus for the operation of a filter arrangement for separating exhaust particulates from an exhaust gas stream, in which the exhaust gas stream is guided through ducts (20) of a ceramic body (1), which ducts extend in the longitudinal direction of a ceramic body (1) and are open on either side, and a voltage is applied to electrodes (5, 6) extending parallel to the ducts (20) in the ceramic body for generating an electric field in the ducts (20) of the ceramic body (1), which field is oriented transversally to the axis of the ducts (20), with a charging of the exhaust particulates occurring by means of a further electrode arrangement (29, 30) prior to the introduction of; the exhaust gas stream into the ducts (20) of the ceramic body (1). It is provided for in accordance with the invention that the voltage applied to the electrodes (5, 6) associated with the ceramic body (1) concerns unipolar voltage pulses which have a pulse duration of less then 20 μs each.

The following devices are successively disposed in the following order from an upstream side to a downstream side in an exhaust gas duct of a combustion apparatus: an air preheater, preheating combustion air for use in an exhaust gas treating apparatus; a heat recovery unit, recovering exhaust gas heat at an exit of the air preheater; a precipitator, collecting soot / dust contained in an exhaust gas at an exit of the heat recovery unit; a wet flue gas desulfurizer, removing sulfur oxides contained in the exhaust gas at the exit of the precipitator; and a reheater, heating the exhaust gas at the exit of the wet flue gas desulfurizer. Each of the heat recovery unit and the reheater has a heat exchanger tube, and a circulation line is disposed to connect the heat exchanger tubes. A sulfur trioxide (SO3) removing agent is supplied to the upstream side of the heat recovery unit, and the temperature of the exhaust gas at the exit of the heat recovery unit is adjusted to not more than a dew point of sulfur trioxide. As the sulfur trioxide removing agent, use is preferably made of at least one among a sulfur trioxide adsorbent, a sulfur trioxide reducing agent, and a sulfur trioxide neutralizing agent. Thus, even when coal with a high sulfur content is used as fuel, heavy metals contained in the exhaust gas can be removed effectively from the exhaust gas.

An apparatus for dissipating energy into the exhaust gas of an internal combustion engine includes a container for confining a flow path for exhaust gas from an internal combustion engine where the container has an inlet and an outlet. A porous, electrically conductive mesh is placed in the container such that exhaust gas can flow through the conductive mesh. At least two electrical terminals are in permanent electrical contact with the conductive mesh. An electrical power supply completes an electrical circuit through the conductive mesh with the power supply having two or more electrical outputs electrically connected to an equal number of electrical terminals on the conductive mesh. The apparatus provides a filter, heater, electrical load and silencer.