Abstract: An arrangement for treating room air has a first air quality sensor in an external air conduit of an air conditioning device. An ionization apparatus, an ozone sensor, an air humidity sensor, an airflow sensor, and at least one air temperature adjusting device are arranged in the supply conduit between air conditioning device and room. Chamber or hood devices forming a component of the room are coupled to the supply conduit. A side of the chamber or hood devices has openings ensuring convection of the supply air into the room. A recirculating air conduit branches off an exhaust conduit to the air-conditioning device. A second air quality sensor is arranged in the recirculating air conduit. A control device is connected to first air quality sensor, ozone sensor, air humidity sensor, airflow sensor, second air quality sensor, and the air temperature adjusting device.

Abstract: An indoor air quality module includes an ultraviolet light source located between two titanium dioxide coated honeycombs. Photons of ultraviolet light are absorbed by the titanium dioxide coating to form reactive hydroxyl radicals that attack and oxidize contaminants in the to water, carbon dioxide, and other substances. An outer compartment is attached to an air duct and an HVAC unit, and an inner compartment supports the honeycombs, a particle filter, and the ultraviolet light source. When the module is in the working position and the honeycombs and the particle filter are correctly installed, the components contact switches on the outer compartment, and the ultraviolet light source is activated. When the inner compartment is pivoted relative to the outer compartment during servicing or if any of the components are incorrectly installed or not installed, one of the components does not engage the corresponding switch, deactivating the ultraviolet light source.

Abstract: An air cleaning unit is provided. The air cleaning unit includes a housing having an air intake and an air outlet. Intermediate the air intake and air outlet is an air filtration medium. Also within the housing is at least one UV-C lamp. The air cleaning unit also includes an odor-reducing medium, such as a photocatalytic oxidation (“PCO”). filter. A method for filtering air using the air cleaning unit is also provided.

Abstract: Techniques for sterilizing a fomite are disclosed. A UV sterilization apparatus includes a housing for enveloping a fomite inside the housing. The housing is composed of a material that prevents transmission of electromagnetic radiation in the ultraviolet range. Attached to the housing is a closure element, and the closure element is also composed of a material that prevents transmission of electromagnetic radiation in the UV range but allows transmission of electromagnetic radiation in the visual range. An ultraviolet light source is attached to an internal surface of the housing or an internal surface of the closure element, and the light source sterilizes the fomite enclosed inside the housing by transmitting ultraviolet electromagnetic radiation towards the fomite.

Abstract: An air purification system and apparatus including a housing, the housing incorporating various deflectors therein, and which support one or more blowers, for drawing contaminated air in through and intake grill and filter, and passing it through the housing, and its deflectors, into a confined space in proximity with one or more ultraviolet lamp, to attain air purification, before the air is forced by the deflectors out of an exhaust outlet for the housing and back into the room as purified air.

Abstract: A photo-electronic air purifying disinfector firstly filters out airborne impurities using a washable filter screen. It then utilizes an activated carbon filter to filter out airborne bacteria and germs. The bacteria and germs which are capable of passing through the activated carbon filter are then eliminated by extreme-UV light emitted by extreme-UV light tubes. It also utilizes a negative ion generator to boost the level of anions in the air before being discharged. These two modes operate in the following manner: the first mode involves cathodic high-voltage output that is discharged via a carbonized fibre. The ionized air is then expelled by a fan. The second mode eliminates bacteria, germs and mould from air as it passes extreme-UV light tubes by exposure to extreme-UV light emitted by these extreme-UV light tubes.

Abstract: The Diffusive Plasma is for effective treatment of contaminated air and material processing. Air is purified and disinfected by passing through the diffusive plasma device which includes a reactor or a plurality of reactors arranged in parallel or series and is energized by a high voltage alternating current power supply. The diffuser, being electrically isolated, provides extra nucleation sites to initiate discharges. It serves to improve the generation of uniform and consistent plasma and to reduce the variation of discharge properties among the reactors. The addition of a diffuser, thereby, enhances the overall effectiveness of decomposing chemicals and destroying microbes to achieve high air treatment and material processing performance. The diffuser can be made of suitable filtering materials to additionally serve as a filter.

Abstract: Disclosed herein are deodorizer systems and methods for making and using the same. In one embodiment, a deodorizer system comprises: a mesh, nanoparticle titania coating on the mesh, and a frame disposed around a periphery of the mesh such that the mesh is configured to be in optical communication with sunlight and for receiving contaminated gas to be deodorized. The mesh has an open area of greater than or equal to about 35%, and has greater than or equal to 6,400 openings/in2. In another embodiment, a deodorizer system comprises: a mesh disposed in a housing and for receiving contaminated gas to be deodorized, nanoparticle titania coating on the mesh, and a UV light source disposed to be in optical communication with the mesh. The mesh has an open area of greater than or equal to about 35%, and has greater than or equal to 6,400 openings/in2.

Abstract: A socket for a lamp comprising housing; a lamp holder displaceable relative said housing between an engaged and disengaged position; power cord associated with one of said housing; a lamp holder for powering said lamp in said engaged position; inhibiting displacement of said housing relative said lamp holder in said engaged position.

Abstract: A multipurpose air sterilization machine is disclosed comprising an enclosure holding a pre-filter, an ultraviolet light chamber with a plurality of ultraviolet lights, one or more photocatalytic oxidizing scrims, and a blower. Air is pulled through the machine by the blower, and passes first through the pre-filter, then the first scrim, then one or more ultraviolet light chambers defined by the plurality of scrims, and is ultimately expelled from the rear of the machine after passing through the blower. The scrims provide for enhanced ultraviolet decomposition of organic compounds, including bacteria, mold spores, viruses, and other organisms, and comprises a substrate coated with a photocatalytic material such as TiO2 adhered to the surface with an ultraviolet-transparent organic polymer.

Abstract: An indoor air quality module includes an ultraviolet light source located between two titanium dioxide coated honeycombs. Photons of ultraviolet light are absorbed by the titanium dioxide coating to form reactive hydroxyl radicals that attack and oxidize contaminants in the to water, carbon dioxide, and other substances. An outer compartment is attached to an air duct and an HVAC unit, and a pivotally attached inner compartment supports the honeycombs and the ultraviolet light source. A first end of the inner compartment is pivotally attached to the outer component, and an opposing second end is removably attached to the outer compartment by fasteners. When servicing is required, the fasteners are removed to allow the inner compartment to pivot relative to the outer compartment to a vertical service position to allow access to the components in the inner compartment.

Abstract: Air decontamination devices in one example include a filter directly exposed to ultraviolet (“UV”) radiation on an upstream side and a downstream side. Ozone may be provided to permeate the filter, as well. Reflectors may be provided to reflect UV radiation emitted in a direction away from the filter, towards the filter. The filter may be a V-bank filter, for example. Air sampling ports and prefilters may be provided. The air decontamination units may be used to decontaminate the air after industrial and medical contaminations and terrorist biological, chemical and radiological attacks, for example. Mobile isolation units, and methods of decontaminating rooms, are disclosed, as well.

Abstract: A system for sterilizing air includes an air duct for flowing the air therethrough. A first electron beam generator is positioned relative to the duct for irradiating the air flowing therethrough with a first electron beam. The first electron beam for disabling microorganisms within the air.

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.

Abstract: There are disclosed methods of controlling the presence of surface and airborne microorganisms in an air handler. The method may comprise: energizing a germicidal lamp to emit distributed UVC radiation; positioning the germicidal lamp in proximity to the heat transfer coil, wherein the intensity of the UVC radiation striking a heat transfer coil of the air handler is to a degree independent of the distance of the germicidal lamp to the heat transfer coil; directing the UVC radiation across the coil face to the coil's tube and fins; reflecting and directing the ultraviolet by the coil's tube and the fins-throughout the coil, thereby increasing the flux density of the ultraviolet radiation and the dosage of the radiation applied to airborne microorganisms and microorganisms carried on the surface; continuing to irradiate the surface with the UVC radiation from the germicidal lamp at least intermittently until the surface is organically clean.

Abstract: A system and method that redistributes light from a light source. The controller can redistribute light to make an irradiance profile of the light source more uniform or make the irradiance profile match a fluid flow profile. The irradiance profile may be controlled by modifying light leakage from a plurality of waveguides or changing the light-directing properties of reflectors and/or lenses.

Abstract: A photocatalytic cleaner for air or water includes a photocatalytic material coating a substrate. An anode, positioned a predetermined distance from the substrate, includes a phosphor that emits ultraviolet light in response to bombardment by electrons from a field emission cathode emitting electrons in response to an electric field. The field emission cathode may be a carbon based field emitter material including incorporating carbon nanotubes.

Abstract: A photocatalytic coating oxidizes volatile organic compounds that adsorb onto the coating into water, carbon dioxide, and other substances. When photons of the ultraviolet light are absorbed by the coating, reactive hydroxyl radicals are formed. When a contaminant is adsorbed onto the coating, the hydroxyl radical oxidizes the contaminant to produce water, carbon dioxide, and other substances. A humidity sensor or a temperature sensor detects the humidity or temperature, respectively, of the air entering the air purification system. Information about the optimal microwave wavelength and intensity for various humidity and temperature levels are stored in a control of a microwave actuator. The microwave actuator determines the optimal wavelength or intensity based on the sensed humidity and temperature level and sends a signal to a magnetron to emit a microwave of the desired wavelength or intensity.

Abstract: A photo-catalytic overcoat on a UV reflective paint layer is employed to maintain high reflectance for long periods of time by continuously removing organic films when exposed to UV light. Advantageously, nano-particles comprising the photo-catalytic overcoat are composed of a semiconductor material that lead to the production of oxygen and hydroxyl free radicals when illuminated with UV light in the presence of water vapor. Some of these free radicals oxidize organic surface films, converting the surface films into gaseous H2O and CO2. This reduces the amount of organic deposits on the surface of the reflective paint layer.

Abstract: A lamp including a reflective portion is utilized in a fluid purification system to maximize the light delivery to a photocatalytic coating that oxidizes gaseous contaminants that adsorb onto the surface to form carbon dioxide, water, and other substances. An ultraviolet light source positioned proximate to the honeycomb activates the titanium dioxide coating. In one example, the reflective portion is a reflective coating. Light directed out of the non-reflective portion of the lamp travels towards the honeycomb and absorbs onto the photocatalytic coating. Light directed towards the reflective portion on the lamp is reflected off the surface of the reflective portion and passes through the non-reflective portion of the lamp to also absorb onto the photocatalytic coating. The reflective portion reflects light towards the honeycomb that would otherwise be misdirected away from the honeycomb, increasing efficiency of the fluid purification system.

Abstract: A 4-in-1 photo-electronic air purifying and conditioning system, which utilizes alternating current suitable for use in all weather conditions has activated carbon filters used in the first stage to eliminate impurities, germs and bacteria in the air drawn into the system. The bacteria and germs which are capable of passing through the activated carbon filter are then eliminated by extreme-UV light emitted by extreme-UV light tubes. A negative ion generator is used to boost the level of anions in the air before being discharged. These two modes operate in the following manner: the first mode involves high-voltage cathodic output that is discharged via carbonized fibers. The ionized air is then expelled by a fan. The second mode eliminates bacteria, germs and mould from air as it passes extreme-UV light tubes by exposure to extreme-UV light emitted by these extreme-UV light tubes.

Abstract: A composition for energy-controlled generation and release of at least one gas, which includes an energy-activated catalyst capable of being activated by electromagnetic energy, and a solid or a liquid containing anions capable of being oxidized by the activated catalyst or reacted with species generated during activation of the catalyst to generate at least one gas. The composition, when exposed to electromagnetic energy, is capable of generating and releasing the gas after activation of the catalyst and oxidation or reaction of the anions.

Abstract: A 3-in-1 photo-electronic air purifying and disinfecting system, which utilizes alternating current, has an activated carbon filter used in the first stage to eliminate impurities, germs and bacteria in the air drawn into the system. The bacteria and germs which are capable of passing through the activated carbon filter are then eliminated by extreme-UV light emitted by extreme-UV light tubes. An anion generator is also included to boost the level of anions in the air before being discharged. These two modes operate in the following manner: the first mode involves high-voltage cathodic output that is discharged via a carbonized fiber. The ionized air is then expelled by a fan. The second mode eliminates bacteria, germs and mold from air as it passes extreme-UV light tubes by exposure to extreme-UV light emitted by these extreme-UV light tubes.

Abstract: An air sterilizer for eliminating an associated airborne contaminant from an associated volume of air is provided. The air sterilizer includes a housing including an air inlet and an air outlet, an airflow pathway initiating approximately at the air inlet of the housing and terminating approximately at the air outlet of the housing, and an ultra-violet (UV) radiation source for producing a germicidal UV light. The UV source is disposed in the airflow pathway of the housing for exposing the associated airborne contaminant to the germicidal UV light. The air sterilizer further includes a reflecting member for increasing the exposure of the germicidal UV light to the associated airborne contaminant in the airflow pathway. The reflecting member being disposed in the housing proximal to the UV source. A power supply is provided for powering the UV source.

Abstract: A 4-in-1 photo-electronic air conditioning, dehumidifying, purifying and disinfecting system has an activated carbon filter in the first stage to eliminate impurities, germs and bacteria in the air drawn into the system. The bacteria and germs in the extracted air, which are capable of passing through the activated carbon filter, are then eliminated by extreme-UV light emitted by extreme-UV light tubes. The excessive moisture in the air is also removed. A negative ion generator is also used to boost the level of anions in the air. These two modes operate in the following manner: the first mode involves high-voltage cathodic output that is discharged via a carbonized fibre. The ionised air is then expelled by an air drum. The second mode eliminates bacteria, germs and mould from air as it passes extreme-UV light tubes by exposure to extreme-UV light emitted by these extreme-UV light tubes.

Abstract: The air-and-water sterilization apparatus for use with an ice machine includes a source of ultraviolet radiation, a first input, a first output, a water tube, an air chamber, an air treatment passageway, a second input, a first filter, a first damper, a third input, a second damper, a second filter, a fan, a second output, and a housing. The source of ultraviolet radiation is one or more ultraviolet lamps that are used to sterilize air and water before that are moved off to the ice machine or other appliance. The source of ultraviolet radiation, the water tube, the.

Abstract: An apparatus and methodology for abating fungi in a building supported on a ground surface and having an upper enclosed living space and a lower enclosed space beneath the upper enclosed space and proximate or beneath the ground.

Abstract: There is disclosed a germicidal treatment system having a status indicator. The germicidal treatment system comprises at least one mounting assembly attachable to an outside of a wall of an air handling apparatus. Each of the mounting assemblies includes a germicidal lamp and a ballast. The germicidal lamp is coupled to the ballast. The germicidal treatment system includes a power cord to receive electrical power and to provide electrical power to the ballast. A status indicator to indicate the functioning status of the germicidal treatment system.

Abstract: A method for decontamination of a contaminated region containing biological species to be destroyed, includes a decontamination step during which a decontamination gas containing atomic nitrogen is propagated in the contaminated region, and atomic nitrogen contributes to the destruction of biological species in the contaminated region.

Abstract: The present invention is for a spore collection apparatus and its method of use. The portable spore collection apparatus includes a suction source, a nebulizer, an ionization chamber and a filter canister. The suction source collects the spores from a surface. The spores are activated by heating whereby spore dormancy is broken. Moisture is then applied to the spores to begin germination. The spores are then exposed to alpha particles causing extinction.

Abstract: The present invention relates to an air cleaner for killing the bacteria, viruses, mildew in the air with optoelectronic. A draft fan in the main body is used to suck the air. The air is then collected in an air collecting device after passing through an air collecting wall. An extreme ultraviolet ray transmitting tube is used to eliminate the bacteria, viruses, mildew in the air, and thereafter, the cleaned air is disposed by a negative ion cleaner. The fresh air is finally discharged through an air outlet.

Abstract: A cartridge device containing UVC for air disinfection that comprises individual ultraviolet bulb, HEPA/Carbon filter, LED for detection of replacement, ballast and electrical components; cartridge is plugged into a backplane which allows for easy installation and servicing of all components. The backplane powers the device and can be encased in various configurations which can be used in multiple applications, including portable and permanent air treatment devices.

Abstract: An air purifier (10) held in a housing (12, 14) with an ambient air inlet (16) and an air outlet (18) and defining an airflow path therethrough for treating ambient air, a filter (disposed in the airflow path and having an air permeable media for communicating air therethrough while retaining particles carried in the flow of air. A purification device attaches to an intermediate chassis in the airflow path for treating the air moved by a fan (70) into operative engagement with the purification device within the housing and out the air outlet. A controller operates the purification device by sensing an operative status of the purification device.

Abstract: A system for electronically disinfecting air includes a first electrode, at least a second electrode, the first and second electrode being spaced apart from one another. The surfaces of the first or second electrode include a semiconductor or a dielectric layer having a thickness of at least 10 angstroms disposed thereon. An electrical power supply is connected between the first and said second electrode, wherein pollutants in air to be disinfected are destroyed by exposure of the air to surfaces of the first or second electrode.

Abstract: The invention provides an apparatus for removing airborne pathogens and toxic substances from a surface of an article or a volume of air, comprising: a main processing chamber having a door for ingress to and egress from the main processing chamber, at least two high voltage electrodes for generating a current. The electrode can form ozone, if desired, to destroy pathogens. Optionally, the electrodes can be in a sealed or unsealed glass tube, with or without mercury, to generate ultraviolet light for photochemical reaction with pathogens or other contaminants. The apparatus also includes a post processing chamber comprising at least one filter for removing or absorbing airborne particulates and pathogens, and includes low voltage electrodes to neutralize charges in air transmitted from the main processing chamber.

Abstract: There is disclosed a recessed cantilever mount and an installation process. The mount may comprise a cradle adapted to attach to a wall of a chassis and extend through an opening of the wall into the chassis, a retainer adapted to attach to the cradle and secure a stem of an electric discharge device to the cradle, wherein the stem is at least partially recessed in the cradle, and a tube of the electric discharge device is recessed within the chassis. The process may comprise recessing a base of a cradle through an opening in a wall of a chassis of an air handler selected from the group comprising a PTAC and a unit ventilator, securing the cradle to the wall, inserting a tube of an electric discharge device through an opening of the base into the chassis, and securing a rim of the electric discharge device against the base.

Abstract: The sterilization method disclosed includes the steps of providing a sterilization chamber; placing the article into the sterilization chamber; equalizing the temperature of the article and the sterilization atmosphere; sealing the sterilization chamber; applying a vacuum of a preselected vacuum pressure to the sterilization chamber; supplying water vapour to the sterilization chamber under vacuum; supplying ozone-containing gas to the sterilization chamber; maintaining the sterilization chamber sealed for a preselected treatment period; and releasing the vacuum in the sterilization chamber; whereby a vacuum pressure is used which lowers the boiling temperature of water in the sterilization chamber below the temperature in the sterilization chamber. One or more ventilating cycles can be added to the preferred method for removing the remaining ozone and humidity from the sterilization chamber.

Abstract: An LED ultraviolet photocatalytic oxidation device is provided in a fluid handling system, such as an air handling system. In one embodiment, the photocatalyst is disposed on a protective layer (e.g. glass, plastic or quartz) on the semiconductor of the LED. In another embodiment, the photocatalyst is disposed on the protective layer, which is separated from the semiconductor by a fluid that filters or changes the wavelengths emitted by the LED. In a third embodiment, the photocatalyst is disposed directly on the semiconductor of the LED.

Abstract: Spherical (23) or cylindrical (27, 36) electrodeless ultraviolet lamps are used to remediate fluid, directly or by excitation of ultraviolet-activated photocatalyst surfaces, which may be on the lamps themselves, or on structures which are permeable by the fluid. The lamps may be excited in cavities (18, 19; 43) by microwave energy from a magnetron (22), or by radio frequency power (39) inductively coupled (40) to the lamps. The lamps (44) may have start-up electrodes (47).

Abstract: A device (20) for Disinfection of HVAC Systems that include features that will protect service personnel from un-intended exposure to ultra violet radiation. The safeguards include an interlock (70) that prevents illumination of germicidal lamps (80) when an enclosure within which the germicidal lamps (80) are mounted is not properly attached to a duct or appliance; the apparatus further provides for innovative methods for determining that the germicidal lamps (80) are operating.

Abstract: A device for mounting a UV bulb includes a housing having a hole therein, a fixed bracket and an adjustable bracket, the fixed bracket is connected to the housing and the adjustable bracket is rotatably mounted to the side bracket, the adjustable bracket also has means for mounting a UV bulb such that when said UV bulb is mounted to the adjustable bracket, the bulb can be inserted through the hole in the housing and rotated through an arc of approximately 90 degrees.

Abstract: An air treatment device includes a housing, a filter element disposed in the housing, an air forcing device for forcing air to flow through the filter element, and a light device disposed in front of the filter element for generating light and for germ killing purposes. The housing includes a pressurized compartment formed between the filter element and the air forcing device, to receive the light device. An ozone generator may supply ozone through the filter element for germ killing purposes. An oxygen generator may supply oxygen out of the housing and into the environment of the users. A filter member may be used for filtering purposes, and a tray disposed below the filter member to collected filtered materials.

Abstract: A refrigerator includes a deodorizer disposed in a cold air circulation path for deodorizing an atmosphere in the refrigerator. The deodorizer includes discharging means for producing ozone and ultraviolet rays by means of high-voltage discharge and a photocatalyst module for decomposing an odor component and injurious matter contained in the atmosphere by means of photocatalyst.

Abstract: An air purifier is provided for mounting to a leading edge of a fan paddle so that equal, mirror-image portions reside above and below the fan paddle. The air purifier is formed with a synthetic fiber filter medium assembled to a lattice framework. Adhesive tape strips are positioned on the framework for mounting the air purifier to the fan paddle.

Abstract: In a treatment method of room air by air ionization, sensors such as air-quality sensors, an airflow sensor, an air humidity sensor, an ozone sensor, are provided. Parameters such as oxidizable air components, relative humidity, flow velocity, flow volume, ozone level, and intensity of oxygen ions are measured. The level of ionization power of the ionization apparatus is determined by an electronic control device based on the measured parameters. The ionization power is lowered, when a predetermined ozone value is detected, and, when the ozone level continues to increase after lowering the ionization power indicating an external ozone source, ozone decomposition is initiated by changing a time period of the applied periodic alternating voltage, supplied in the form of alternating pulses or packages of alternating pulses of a preset number or a combination of alternating pulses and packages of alternating pulses of a preset number.

Abstract: An ultraviolet sterilization apparatus comprising a housing and a replaceable lamp cartridge package. The lamp cartridge package is a disposable component comprising at least one ultraviolet lamp and an envelope for housing the at least one ultraviolet lamp, the envelope comprising a jacket with a reflective inner surface, an envelop air inlet opening and an envelop air outlet opening, and at least one air-transmitting, ultraviolet-stopping device adjacent at least one of the two envelope openings. The housing has an opening for the inlet of an air flow to be sterilized and an opening for the outlet of a sterilized air flow, said air flow being generated by a fan inside the housing.

Abstract: An example airborne conductive contaminant handling system is described. The airborne conductive contaminant handling system may include a handling circuit that is configured to selectively pass an electric current through a conductive contaminant. The airborne conductive contaminant handling system may also include an attracting circuit that is configured to attract an airborne conductive contaminant towards the handling circuit, where it can be subjected to the electric current.

Abstract: An air purification and disinfection apparatus incorporates an air inlet filter (1) spanning the intake of the apparatus, an ultraviolet light source (2) for treating the air within a chamber (14) of the apparatus, and an equalising screen (3) spanning the outlet of the apparatus. The chamber (14) is lined with a reflective sheet (11) or coating such that the ultraviolet light is reflected around the chamber (14). The air inlet filter (1) removes larger airborne particles from the airflow prior to entering the chamber (14). The light source (2) may be located in the chamber (14) or in a housing (16) which communicates with the chamber (14). With the reflective surface of the chamber (14), the intensity of the light source (2) can be maintained when dirt begins to build up on the light source (2), thereby extending the length of time that passes between each cleaning of the light source (2).

Abstract: A procedure and a filter device (1) serving the purpose of removing and/or destruction organic substances in contaminated air. The filter device comprises at least one ventilator (12) for sending an air stream through a first chamber (14) with an opening, which is connected with a source for contaminated air; a second chamber (15) with a number of sheets (20) placed abeam the main direction of the air stream in order to make the air stream change direction at least one time; a third chamber (16) with a number of perforated tubes (22) which at least at one end are in open connection to a secondary air source; a fourth chamber with a number of lamps for radiating the air stream with a short-waved ultra-violet light and; a fifth chamber (17) with a volume, which gives the air stream a predetermined duration time in the chamber, and which has an opening, through which the purified air passes in order to be released to the surroundings.

Abstract: A germicidal lamp for harsh environments is disclosed. The germicidal lamp is suited for outdoor installation on an HVAC system or related components. The germicidal lamp is made from materials resistant to splashing water, etc., and includes plural seals to protect the interior of the fixture and prevent leakage or contamination into or out of the HVAC system.