An air purification device for use in an air management system includes a housing formed from a polymer matrix composite structure and a filter arranged within the housing. The filter is formed from a porous composite structure including a plurality of filter fibers such that air is configured to flow through the filter. Microbes within the air are configured to contact the plurality of filter fibers.

An air sanitation device is disclosed. The air sanitation device can include a base section, a body section, and an air movement device configured to move air through at least a portion of the air sanitation device. The air sanitation device can move air from an inlet of the air sanitation device, and past an ultraviolet (UV) light source, and out an outlet of the air sanitation device. The air sanitation device can be configured to draw in air from within or below a breathing zone. The air sanitation device can be configured to draw in air from below the breathing zone and output sanitized air. The sanitized air can be outputted at an angle such that the sanitized air flows in a generally downward direction.

Disclosed is a method and system for the mitigation of risk of exposure to contaminants and providing information thereof. The method and system thereby follow the National Institute for Occupational Safety and Health (NIOSH) Hierarchy of Controls to implement a method and system to optimize safety guidelines and increase mitigation effectiveness. The method includes providing or using an existing air moving unit, mounting sensors for the continuous measurement of contaminants, flushing the enclosed area prior to and after occupancy for a specific time, filtering, diluting the enclosed area during occupancy, pressurizing for contamination control, maintaining humidity between 40% and 60%, providing ultraviolet germicidal irradiation to destroy and deactivate nuclear material in contaminants, cleaning, adjusting operational parameters between energy conservation mode and pandemic mode, and providing a display having information thereof about the enclosed area including the attributes and characteristics continuously monitored by sensors.

A heating, ventilating and air conditioning (HVAC) unit. The unit comprises a heat exchanger or drain pan located inside a HVAC housing that has one or more access openings and ultraviolet light-sensitive components therein. The unit also comprises a light located inside of the HVAC housing and a light shield located between the heat exchanger or drain pan and the light source. The light source includes a network of open-ended cells, each cell having ultraviolet light reflective walls. The light shield is oriented to direct an ultraviolet light from the light source through the open-ended cells towards the heat exchanger or drain pan and away from the one or more access openings and ultraviolet light-sensitive components.

The present invention supports an airflow register accessory comprising an accessory having an outer and an inner surface and defining vents, a fastening mechanism located on the inner surface of the accessory, and a scented component located on the inner surface adjacent and accessorizing the vents. In a preferred embodiment, the accessory may be easily attached to and detached from the room-facing surface of an airflow register. Upon air flow from an HVAC system through the airflow register and airflow register accessory, a pleasant scent may be imparted to the room via release of scent from the scented component.

Solution distribution systems and methods of manufacturing and operating the same are provided. Solution distribution systems discussed herein are configured to dispense an anti-pathogenic solution into an air stream managed by an air handling system. Such solution distribution systems include a dispersion nozzle assembly structured to dispense the anti-pathogenic solution into the air stream in a dispersion pattern. The solution distribution systems also include a pump module configured to deliver the anti-pathogenic solution to the dispersion nozzle assembly at a dispersion pressure. The disclosed solution distribution systems further include a controller disposed in electrical communication with a control valve and the pump module. The controller is configured to engage the control valve to dispense the anti-pathogenic solution via the dispersion nozzle assembly into the air stream for a dispersion event period and at a dispersion interval.

A photocatalyst device including: a body; a light source part fixed to the body to irradiate ultraviolet light and having an LED and a substrate for fixing the LED thereto; a catalyst part fixed to the body to conduct photocatalytic reaction with the light irradiated by the light source part and thus to generate superoxygen radicals; and a heat radiating part disposed on the light source part to radiate the heat generated from the light source part, whereby the photocatalyst device purifies air and sterilizes and deodorizes the evaporator, while being easily mountable as a single module.

An air purification and microbiological sanitization system for a heating, ventilation, and air conditioning (HVAC) system of railway vehicle includes a casing with a chamber having an inlet opening for inflow of air into the chamber and an outlet opening for outflow of air from the chamber, a plurality of light-emitting diodes (LEDs) for generating germicidal ultraviolet radiation in the chamber, an ionizer device for ionizing air in the chamber, an electronic control unit for controlling the HVAC system, and an air quality sensor for measuring concentration of particulate matter and of carbon dioxide in the air. The electronic control unit controls the radiant power of at least one LED as a function of a measurement signal transmitted by the air quality sensor.

A system includes one or more radio frequency (RF) emitters configured to transmit RF energy into a specified area in order to inactivate one or more specified microorganisms in the specified area. The system also includes a control system configured to control the one or more RF emitters in order to adjust the RF energy transmitted by the one or more RF emitters. The control system is configured to obtain information identifying different types of microorganisms that are or might be present in the specified area over time and to adjust the RF energy transmitted by the one or more RF emitters in order to target the different types of microorganisms for inactivation over time.

A dual-disinfecting germicidal lighting device includes a housing, an air-permeable porous carrier with at least two sides, a fan, two light sources, and two means of disinfection that are back-up means for each other. A first means of disinfection is an air-disinfection means and it includes the housing, the air-permeable porous carrier, the fan, and the first light source. The air-permeable porous carrier contains a photocatalyst material, and the first light source activates the photocatalyst material in air-permeable porous carrier. The housing, the air-permeable porous carrier, and the fan together form an air chamber. The fan forces the surrounding air through the air-permeable porous carrier. A second means of disinfection is an air-and-surface disinfection means that includes the second light source. The second light source is a germicidal light source that disinfects pathogens in the surrounding air or on a nearby surface through the shining of its light.