Abstract: An apparatus and method for filtering air in residential and commercial applications is described herein. The air filter may have a support frame which secures to the intake grille of an HVAC system. A filter media may be placed in the support frame to filter air as it passes through the air filter. The filter media may be replaced when the filter media becomes too dirty to effectively filter air. The dirty filter media may be removed from the frame and a new clean media may be replaced in the frame.

Abstract: Apparatus for transforming the air exchange load of a higher air exchange rate space into the air exchange load of a lower air exchange rate space, including: a housing; an air inlet and at least one air outlet formed in the housing; a passageway extending through the housing and connecting the air inlet to the at least one air outlet; a circulation fan disposed in the passageway so as to draw the air of the higher air exchange rate space into the air inlet, through the passageway, and return that air to the higher air exchange rate space through the at least one air outlet; and a filter disposed in the passageway for purging noxious substances from the air passing through the passageway, whereby to transform the air exchange load of a higher air exchange rate space into the air exchange load of a lower air exchange rate space.

Abstract: A device for degassing aqueous media has a first container containing medium to be degassed. A first line connects the first container to a degassing module and a second line connects the degassing module to a second container for receiving the degassed medium. A first non-return valve in the first line prevents backflow from the degassing module to the first container. A hydrophilic membrane in the second line prevents the passage of gas, and a branch between the degassing module and the hydrophilic membrane has a hydrophobic degassing filter for letting out gas. A third line is connected to the first line between the first container and the first non-return valve and to the second line between the second container and the hydrophilic membrane. A second non-return valve in the third line between the first non-return valve and the hydrophilic membrane prevents a flow towards the second container.

Abstract: The present disclosure provides a method and apparatus for measuring ash deposit levels in a particulate filter comprising at least one cell. One or more indicator components is inserted into the at least one cell so as to lie upon any deposits contained therein. Radiation is emitted from a radiation source into the cell, and the position of the one or more indicator components is detected on the basis of the emitted radiation. The deposit level within the cell is then calculated on the basis of the position of the one or more indicator components.

Abstract: The invention relates to a fan-and-filter unit to be mounted in the wall of a switch cabinet or housing, and includes a fan unit inserted in a fan housing, a filter mat arrangement mounted upstream of the fan unit and a fan cover immobilizing the filter mat. An embodiment advantageous for operation of the fan-and-filter unit may be provided where the fan-and-filter unit has a filter mat monitoring unit which is designed to detect the service life and/or a degree of soiling of the filter mat arrangement and which includes an insert integrated into the fan housing or the fan cover and having an illuminated display visible from the exterior of the fan cover facing away from the fan unit and being designed to display at least exceeding of a predetermined or predeterminable service life and/or a predetermined or predeterminable degree of soiling.

Abstract: A filter system has a housing with a housing wall and at least one lid. An inlet socket is arranged at the housing and feeds a fluid to be filtered into the housing. An outlet socket is arranged at the housing and discharges the fluid that has been filtered from the housing. A sensor socket is arranged at an end section of the housing. The sensor socket is arranged angularly relative to a longitudinal axis of the housing at the outlet socket.

Abstract: A filter device for separating paint overspray from a raw gas flow containing overspray particles is provided, including at least one filter element, to which at least a part of the raw gas flow is feedable, and a clean gas chamber, to which the raw gas flow filtered by the filter element is feedable as a clean gas flow. In the event of a filter rupture at at least one filter element of the filter device, contamination of the clean gas side of the filter device and regions downstream of the filter device of a painting installation containing the filter device is kept as low as possible through use of at least one safety filter arranged downstream of the at least one filter element and associated with the clean gas chamber such that at least part of the clean gas flow is filterable in the event of a filter rupture.

Abstract: An oil separator is provided with a case that has an air inlet and a plurality of expansion chambers formed within the case. Air that contains oil is introduced into the case via the inlet and caused to strike a impingement plate to thereby separate the oil from the introduced air and recover the oil. The transverse cross-sectional area of each expansion chamber is greater than the open area of the inlet. Partition walls with orifice holes formed therein are provided between the expansion chambers.

Abstract: A control apparatus for an internal combustion engine detects an amount of particulate matter contained in an exhaust gas in an exhaust passage, according to an electrical property across electrodes of a particulate matter sensor disposed in the exhaust passage of the internal combustion engine. The term “electrical property” here refers to a property that changes with the amount of particulate matter deposited, for example, a current value of when a predetermined voltage is applied. After the internal combustion engine is started and detection of the amount of the particulate matter is completed, an element section of the particulate matter sensor is set to a predetermined temperature range. The particulate matter deposited on the element section is thereby burned and removed. The control apparatus maintains the element section in the predetermined temperature range after burning and removing the particulate matter until the internal combustion engine stops.

Abstract: The present invention relates to a separator and more specifically, but not exclusively, to a centrifugal separator for the cleaning of a gaseous fluid. A centrifugal separator is provided as comprising a housing defining an inner space, and a rotor assembly for imparting a rotary motion onto a mixture of substances to be separated. The rotor assembly is located in said inner space and is rotatable about an axis relative to the housing. The rotor assembly comprises an inlet for receiving said mixture of substances, an outlet from which said substances are ejected from the rotor assembly during use, and a flow path for providing fluid communication between the inlet and outlet, wherein the outlet is positioned more radially outward from said axis than the inlet.

Abstract: An apparatus, method and system remove contaminants from a vapor. In an embodiment, a contaminant removal apparatus includes a vacuum box. The vacuum box is a vessel. The apparatus also includes a demister pad disposed in the vacuum box. A vapor is introduced to the vacuum box on an opposing side of the demister pad from a vapor exit from the vacuum box.

Abstract: A filter sensor to monitor an air filter in an air conditioning system is disclosed. The filter sensor includes a housing having an interior passage. The housing is located in relation to an air vent of the air conditioning system. A propeller is mounted in the interior passage. The propeller is rotated by the filtered air flow of the air conditioning system. A motion sensor is provided in proximity to the propeller or its shaft. A controller is coupled to the motion sensor to determine the rotational speed of the propeller and correlate the rotational speed of the propeller with the condition of the filter. An indicator is coupled to the controller to indicate a status of the air filter.

Abstract: Apparatus and method to mitigate the spread of respiratory emission of a sneeze are disclosed. The apparatus includes a spacer component and at least one filtration component. The at least one filtration component is disposed atop the spacer component. The spacer component includes a corrugated sheet, which forms a plurality of directional flutes to direct filtered air out of the apparatus. The least one filtration component filters the respiratory emission to produce the filtered air. In accordance with the method, the respiratory emission is filtered through at least one filtration component to produce filtered air, and the filtered air is directed through a spacer component comprising a corrugated sheet, which forms a plurality of directional flutes that direct the filtered air out of the apparatus.

Abstract: A system and method of controlling a flow of steam in a steam generator having a heater for heating fluid in a vessel is disclosed. The method includes: delivering the steam from the steam generator to a first side of a filtering membrane; receiving purified steam from a second side of the filtering membrane, the purified steam having a steam flow rate; determining at least one coefficient of a substantially linear mathematical relationship between the steam flow rate of the purified steam and duty cycle; and configuring the steam generator to control: the duty cycle of the heater based on the determined at least one coefficient and a target steam flow rate; and/or the target steam flow rate based on the at least one coefficient and a target duty cycle of the heater.

Abstract: The invention is directed to a direct replacement filter within an air flow channel having a housing with an at least one exposure slot. An at least one filter media storage area is within the housing having unexposed filter media stored therein. The unexposed filter media being pleated, folded, and stacked and compactly held within the at least one filter media storage area. A controller controls an at least one movement member that moves an unexposed portion of the at least one filter media into the at least one exposure slot in a pleated state and exposes the unexposed portion of the at least one filter media to the air flow channel creating a pleated, exposed portion of the at least one filter media. One or more sensors are provided and the controller communicates with these sensors. A containment area is also provided, wherein the pleated, exposed portion of the at least one filter media is collected and retained within the containment area.

Abstract: A flying air purifier includes a flying unit configured to fly within a space at a first elevation. The flying unit is also configured to fly within the space at a second elevation. The flying air purifier also includes an air purifier mounted to the flying unit and configured to remove particles from air within the space at the first elevation and at the second elevation. The air purifier includes an air inlet having a first charge and an air outlet having a second charge, wherein the second charge is opposite of the first charge.

Abstract: A control apparatus for an internal combustion engine detects an amount of particulate matter contained in an exhaust gas in an exhaust passage, according to an electrical property across electrodes of a particulate matter sensor disposed in the exhaust passage of the internal combustion engine. The term “electrical property” here refers to a property that changes with the amount of particulate matter deposited, for example, a current value of when a predetermined voltage is applied. After the internal combustion engine is started and detection of the amount of the particulate matter is completed, an element section of the particulate matter sensor is set to a predetermined temperature range. The particulate matter deposited on the element section is thereby burned and removed. The control apparatus maintains the element section in the predetermined temperature range after burning and removing the particulate matter until the internal combustion engine stops.

Abstract: A cyclone dust collector includes a cyclone chamber to centrifugally separate dust by creating rotating airflow, and a ring-shaped indicator provided to the cyclone chamber to rotate due to the rotating airflow in the cyclone chamber. The indicator visualizes the rotating airflow by rotating when the rotating airflow is created. The user may easily check condition of the rotation airflow and take proper action in the case that the cleaner malfunctions.

Abstract: One aspect of the present teachings includes a separation membrane arranged in a hollow case. A particular component concentration chamber and a particular component dilution chamber are arranged in series in the hollow case. The particular component concentration chamber is capable of increasing concentration of the particular component by allowing permeation of the particular gas through the separation membrane. The particular component dilution chamber is capable of increasing concentration of the particular component by not allowing permeation of the particular gas through the separation membrane. The particular component concentration chamber and the particular component dilution chamber are configured such that only a gas containing the particular component and permeated through the separation membrane or only a gas containing the particular component not permeated through the separation membrane in one of the chambers disposed on an upstream side (i.e.

Abstract: A plant air purifier and associated method for purifying air, comprising: at least one grow container; a filter bed comprising a surface which is horizontal within 20 degrees of a horizontal plane; at least one plant which grows within the filter bed; a reservoir for containing water for watering the at least one plant; a mechanical watering device which waters the filter bed from the top down; a pump for pumping water from the reservoir to and through the mechanical watering device; and an air propulsion mechanism for propelling air through the filter bed.

Abstract: Apparatus for transforming the air exchange load of a higher air exchange rate space into the air exchange load of a lower air exchange rate space, said apparatus comprising: a housing for mounting to a surface of the higher air exchange rate space; an air inlet formed in said housing; at least one air outlet formed in said housing; a passageway extending through said housing and connecting said air inlet to said at least one air outlet; a circulation fan disposed in said passageway so as to draw the air of the higher air exchange rate space into said air inlet, through said passageway, and return that air to the higher air exchange rate space through said at least one air outlet; and a filter disposed in said passageway for purging noxious substances from the air passing through said passageway, whereby to transform the air exchange load of a higher air exchange rate space into the air exchange load of a lower air exchange rate space.

Abstract: A unique, multi-cartridge, easily re-configurable ambient air filter assembly (air contaminant control system) that removes particulate and gaseous chemical/biological contaminants from the incoming cathode air stream on a fuel cell or similar devices is described. The filter assembly is composed of individual filter cartridges (sub-assemblies) of various filtration media that are targeted at removing specific airborne contaminants. Combining specific sets of cartridges enables the filter assembly to be readily/rapidly configured (and re-configured) for specific applications—such as urban, rural, industrial, or military battlefield environments. Selection of correct media ensures complete removal of potential contaminants, enables rapid re-configuration to different environments, quick replacement of spent cartridges without disposal of non-spent media (reducing waste and cost).

Abstract: A control apparatus for an internal combustion engine detects an amount of particulate matter contained in an exhaust gas in an exhaust passage, according to an electrical property across electrodes of a particulate matter sensor disposed in the exhaust passage of the internal combustion engine. The term “electrical property” here refers to a property that changes with the amount of particulate matter deposited, for example, a current value of when a predetermined voltage is applied. After the internal combustion engine is started and detection of the amount of the particulate matter is completed, an element section of the particulate matter sensor is set to a predetermined temperature range. The particulate matter deposited on the element section is thereby burned and removed. The control apparatus maintains the element section in the predetermined temperature range after burning and removing the particulate matter until the internal combustion engine stops.

Abstract: The present invention provides an air cleansing system that removes the polluted air and controls the air temperature. This system may by optionally integrated with other systems including security, surveillance, smoke alarms and the like.

Abstract: A method and a device for reducing the humidity of a gas in a housing interior, in particular in a battery housing interior, includes leading a gas through a first selectively permeable membrane and into an intermediate space. The intermediate space has the first selectively permeable membrane as an inlet and a second selectively permeable membrane as an outlet. The gas is then cooled in the intermediate space by a cooling unit such that a water vapor portion of the gas is condensed into water and the gas having a reduced water vapor content is directed through the second selectively permeable membrane into the housing interior.

Abstract: A shielded sensor system and method features an airflow housing including a downward facing inlet and a downward facing outlet. At least one sensor is disposed in the housing between the inlet and the outlet. A particulate screener is located between the inlet and the sensor.

Abstract: A system and method for the monitoring of ammonia in a fluid. The ammonia monitoring system includes an ammonia sensor that is configured to detect trace amounts of ammonia (NH3) in a fluid (i.e., gas or liquid) that is pumped through it in real time. The real time ammonia sensor includes an interferometer configured to track the amount of ammonia that is pumped into the real time ammonia sensor. The ammonia monitoring system, via the real time ammonia sensor, is further configured to detect ammonia levels in industrial poultry houses and provide electronic feedback to the building's ventilation control system.

Abstract: A clog indicating device indicating clogging of a dust collecting filter in a dust collector is disclosed. The dust collector includes on an upper region of its casing an exhaust port opening upward, and a cover member is mounted interspatially above the exhaust port. A colored indicating float is so located as to be movable upward between the exhaust port and the cover member due to pressure of an air exhausted from the exhaust port. Clogging of a dust collecting filter is indicated according to a degree of exposure or a position in an up and down direction of the indicating float between the exhaust port and the cover member.

Abstract: A filter system includes a housing, a filter medium disposed within the housing, an optical analyte sensor, and an optical reader. The optical analyte sensor is characterized by a first region that exhibit a first response to an analyte of interest and a second region that exhibit a second, different, response to an analyte of interest. The optical analyte sensor includes a detection medium and is disposed within the housing such that the detection medium is in fluid communication with the filter medium. The optical reader includes at least one light source and at least one detector.

Abstract: Methods and systems for predicting a filter lifetime include building a filter effectiveness history based on contaminant sensor information associated with a filter; determining a rate of filter consumption with a processor based on the filter effectiveness history; and determining a remaining filter lifetime based on the determined rate of filter consumption. Methods and systems for increasing filter economy include measuring contaminants in an internal and an external environment; determining a cost of a corrosion rate increase if unfiltered external air intake is increased for cooling; determining a cost of increased air pressure to filter external air; and if the cost of filtering external air exceeds the cost of the corrosion rate increase, increasing an intake of unfiltered external air.

Abstract: Embodiments described herein relate to roomside replaceable fan filter units. In one embodiment, a roomside replaceable fan filter unit includes a housing having a filter receiving aperture and an air inlet, an aerosol injector, and a fan filter unit. The fan filter unit is coupled to the housing between the aerosol injector and the filter receiving aperture. In another embodiment, a roomside replaceable fan filter unit includes a housing having a sidewalls and a top wall that define an interior volume, an air inlet formed in the top wall, and a filter receiving aperture disposed opposite the top wall. The roomside replaceable fan filter unit also includes a fan filter unit disposed in the interior volume between the air inlet and the filter receiving aperture. The roomside replaceable fan filter unit includes an aerosol injector disposed upstream of the fan filter unit in the interior volume.

Abstract: A nitric oxide generator generates nitric oxide from a mixture of nitrogen and oxygen such as air treated by a pulsating electrical discharge. The desired concentration of nitric oxide is obtained by controlling at least one of a frequency of the pulsating electrical discharge and duration of each electrical discharge pulse.

Abstract: A final scrubber in the inert carrier gas flow path of an elemental analyzer includes a manifold with valves for selectively bypassing a quick disconnect final scrubber housing that includes a filter tube and sealed gas fittings. The housing includes alignment members and a latch for positioning and locking the housing onto and in sealed engagement with the instrument's manifold. A switch detects the presence of the housing, and a control circuit controls valves to direct the inert gas flow though the filter tube or bypass the filter tube when the housing is removed. With this system, the final scrubber can be removed and replaced quickly without the use of tools while the carrier gas continues to flow though the furnace without interruption. Also, the valves can be closed to allow for segmented leak detection of the instruments gas flow path.

Abstract: A filter system for an explosion-proof enclosure is described herein. The filter system can include a pre-filter assembly located outside the explosion-proof enclosure. The pre-filter assembly can include a pre-filter material configured to control air passing therethrough. The filter system can also include a filter assembly coupled to the pre-filter assembly. The filter assembly can further control the air received from the pre-filter assembly and passing therethrough into the explosion-proof enclosure.

Abstract: A filter system includes a housing, a filter medium disposed within the housing and a optical analyte sensor also disposed within the housing in fluid communication with the filter medium. The optical analyte sensor includes a detection medium that changes at least one of its optical characteristics in response to an analyte. The filter system further includes an optical reader having at least one light source and at least one detector. The optical reader is attached to the housing such that at least a portion of light emitted by at least one light source is reflected from the optical analyte sensor and captured by at least one detector.

Abstract: A backflush filter cleaning system for use with a vacuum cleaner employing an internal filter may include a filter cage having a first end, a second end and a peripheral opening, a backflush valve coupled to the first end, an intake plenum coupled to the second end, the plenum having an air outlet, an inlet valve coupled between the peripheral opening and the air outlet, and a cleaning actuator coupled to at least one of the valves. The system can be adapted to clean a filter coupled to a vacuum cleaner where the system can include a means for establishing a first airflow path from inside the collector through the filter, to the vacuum source, a means for flowing air along the first airflow path, and a means for establishing a second airflow path from an atmosphere surrounding the vacuum cleaner through the backflush valve, through the filter, and into the collector to clean the filter.

Abstract: Active carbon filters and systems that are operative to detect active carbon filter degradations are provided. The active carbon filter can include a carbon filter comprising activated carbon and defining a filter surface; a first piezoelectric wafer active sensor on the filter surface that is electrically isolated from the carbon filter; and a second piezoelectric wafer active sensor on the filter surface that is electrically connected to the filter surface; and an impedance monitoring device electrically connected to the first piezoelectric wafer active sensor and the second piezoelectric wafer active sensor. Methods are also disclosed for determining if any degradation has occurred in an active carbon filter.

Abstract: An air contaminant filtration system (10) for a cabin (12) comprising an external air drawing system (14) for drawing air from an atmosphere surrounding the cabin (12), an internal air extraction system (16) for drawing air from an atmosphere within the cabin (12), a main filtration system (18), and a filtered air delivery system (20). Air drawn from the external drawing system (14) and from the internal air extraction system (16) is directed towards the main filtration system (18) for filtration and the filtered air is then directed towards the filtered air delivery system (20) for delivery to the cabin (12).

Abstract: Disclosed are methods, apparatuses, and systems for generating an alert message based on a determined crossing of a weight threshold of a filter.

Abstract: An adaptable emission filtration, monitoring, and notification system for emission sources within a civic infrastructure has a filter housing with filtration media located inside. The system has a control system with a filter intake sensor, a filter discharge sensor, a microprocessor, a power source, and a transmitter. The system has a civic reception system located in a geographically bound area of interest, with a receiver. The filter housing intake side is attached to an emission source discharge opening. The filtration media filters toxic emissions from the gas stream. The microprocessor compares the signal from the filter intake sensor and the filter discharge sensor then sends a resultant signal by way of a transmitter to the receiver of the civic reception system upon detected decreased efficiency of the filtration media.

Abstract: A method and apparatus for processing air. The apparatus comprises an air separation module, a first input, a first output, a second output, and a flow control system. The air separation module is configured to generate an inert gas. The first input for the air separation module is configured to receive first air. The first output for the air separation module is configured to output the inert gas from the air separation module. The second output for the air separation module is configured to output separated air from the air separation module. The flow control system is configured to control a flow of air in the air separation module that increases a rate at which the air separation module reaches a desired operating temperature for generating the inert gas using a number of ports in the flow control module.

Abstract: The present invention relates to a separator and more specifically, but not exclusively, to a centrifugal separator for the cleaning of a gaseous fluid. A centrifugal separator is provided as comprising a housing defining an inner space, and a rotor assembly for imparting a rotary motion onto a mixture of substances to be separated. The rotor assembly is located in said inner space and is rotatable about an axis relative to the housing. The rotor assembly comprises an inlet for receiving said mixture of substances, an outlet from which said substances are ejected from the rotor assembly during use, and a flow path for providing fluid communication between the inlet and outlet, wherein the outlet is positioned more radially outward from said axis than the inlet.

Abstract: The present invention relates to a separator and more specifically, but not exclusively, to a centrifugal separator for the cleaning of a gaseous fluid. A centrifugal separator is provided as comprising a housing defining an inner space, and a rotor assembly for imparting a rotary motion onto a mixture of substances to be separated. The rotor assembly is located in said inner space and is rotatable about an axis relative to the housing. The rotor assembly comprises an inlet for receiving said mixture of substances, an outlet from which said substances are ejected from the rotor assembly during use, and a flow path for providing fluid communication between the inlet and outlet, wherein the outlet is positioned more radially outward from said axis than the inlet.

Abstract: One example embodiment includes a system for removing cooling liquid from a mist. The system includes an intake, where the intake is configured to receive the cooling mist. The system also includes a mist filter, where the mist filter is configured to remove cooling liquid from the mist. The system further includes an exhaust, where the exhaust is configured to output the demisted air.

Abstract: A smart filter assembly is provided, the smart filter assembly having a fouling detection instrument and a communications module. The fouling detection instrument measures the weight of the filter assembly to indicate the degree of fouling. The communications module conveys the signal from the fouling detection instrument to a control system.

Abstract: An isolator includes a workroom having a first sterilizing material supply port, a first sterilizing material discharge port, a first gas supply port and a first gas discharge port, a sterilization chamber having a second sterilizing material supply port, a second sterilizing material discharge port, a second gas supply port and a second gas discharge port, a sterilizing material supply unit, a first sterilizing material supply path connecting the sterilizing material supply unit to the first sterilizing material supply port, a second sterilizing material supply path connecting the sterilizing material supply unit to the second sterilizing material supply port, a first circulating path connecting the first sterilizing material discharge port to the sterilizing material supply unit, a second circulating path connecting the second sterilizing material discharge port to the sterilizing material supply unit, a first gas supply path, a second gas supply path, a first gas discharge path, a second gas discharge path

Abstract: An indoor dust collecting system includes an air conditioner having an indoor unit that generates an air current, a dust collector, and a controller for controlling the air current from the indoor unit. A moving body detector is provided to detect a moving body such as, for example, a person, a pet, a cleaning robot, and the like. The air current from the indoor unit is controlled by the controller based on the position of the indoor unit, the position of a spot of occurrence of dust detected by the moving body detector, and the position of the dust collector such that the air current from the indoor unit reaches the dust collector via the spot of occurrence of dust in order for the dust collector to effectively suck the dust.

Abstract: Collection enhanced materials, flue gas additives, and methods of making the enhanced materials and flue gas additives are provided. In one embodiment, a down stream addition system configured to control material passing through a metering device from a vessel to a gaseous exhaust path extending between a unit and an exhaust flue of the unit is provided. In alternative embodiments, methods are provided for introducing at least one of a flue gas additive and a collection enhanced material to a gaseous exhaust stream exiting a unit; exposing and removing at least a portion of at least one a of flue gas additive and a collection enhanced material from a gaseous exhaust stream exiting a unit prior to entering an exhaust flue; and recycling at least a portion of material removed a from a gaseous exhaust stream exiting a unit back to the gaseous exhaust stream without passing through the unit.

Abstract: Disclosed herein is a ceiling embedded type air conditioner having a filter cleaning device to clean a filter. The filter cleaning device includes a cleaning unit to remove dust from the filter and a dust storage unit to store the dust removed by the cleaning unit. The filter may automatically and periodically be cleaned by the cleaning unit and the removed dust may be stored in the dust storage unit, which eliminates a need to separate and clean the filter.

Abstract: A marine engine exhaust system has an exhaust conduit conveying engine exhaust gas from upstream to downstream, a sensor sensing oxygen content of the exhaust gas in the conduit, and a shield located in the conduit. The shield is configured to shield the sensor from deleterious effects of liquid when liquid and exhaust gas is reverted in the exhaust conduit from downstream to upstream.