A system for decontaminating/neutralizing breathable air and surfaces in an occupied enclosed space, i.e., building, aircraft, vehicle or greenhouse, includes mounting an atmospheric hydroxyl radical generator along an inside surface of the atmospheric hydroxyl radical generator having respective opposite air inlets and air outlets. The hydroxyl radical generator includes a polygonal housing supporting a plurality of spaced crystal-spliced UV optics, which are tubular, medical grade pure quartz optics to emit/irradiate ultraviolet in the nanometer wavelength/ultraviolet spectrum of between 100 and 400 nanometers for deactivating and neutralizing atmospheric chemicals and pathogens in breathable air and surfaces. The hydroxyl radicals contact the walls of the reaction chamber housing. The hydroxyl radicals become created and excited to react quickly with impurities including VOC, virus, bacteria and fungi, rendering them inactivated and neutral. The breathable air passes through the polygonal housing and is decontaminated and neutralized of impurities before entering the occupied enclosed space.

A system for decontaminating/neutralizing breathable air and surfaces in an occupied enclosed space, i.e., aircraft, rail and road vehicles, in buildings and other human occupied spaces, includes mounting an atmospheric hydroxyl radical generator along an inside surface of an occupied space having respective air inlets and air outlets. The hydroxyl radical generator includes a polygonal housing supporting a plurality of spaced crystal-spliced UV optics medical grade pure quartz, which emit/irradiate ultraviolet in the nanometer wavelength/ultraviolet spectrum of between 100 and 400 nanometers for deactivating and neutralizing atmospheric chemicals and pathogens in breathable air and surfaces. The hydroxyl radicals contact the walls of the reaction chamber housing. The hydroxyl radicals become created and excited to react quickly with impurities including VOC, virus, bacteria and fungi, rendering them inactivated and neutral. The breathable air passes through the polygonal housing and is decontaminated and neutralized of impurities before entering the occupied enclosed space.

A scent adjustment system includes a scent emitter arranged to supply a scent material to a target space, a storage, and a controller. The storage stores sensory information in which an intensity of a smell of the scent material perceived by a person and a concentration of the scent material are associated with each other. The controller adjusts the concentration of the scent material supplied from the scent emitter based on the sensory information stored in the storage.

The present disclosure provides a disinfecting device for a central air conditioner, which uses high-powered ultraviolet rays to efficiently and rapidly eliminate viruses, and uses two sets of parallel reflectors to reflect and overlap light curtains of the high-powered ultraviolet rays back and forth. In this way, small-sized aerosols with viruses can be eliminated, and no secondary pollutants such as ozone are produced in a process of purifying and disinfecting air by the ultraviolet rays. The entire device has a simple structure and can be used in the central air conditioner with an existing architecture. The entire device only needs to be provided in an air supply duct of the central air conditioner.

An ion generating device can include a housing having an opening, an anode and a cathode disposed within the housing and having a space between them in fluid communication with the opening, a power source having a negative terminal and a positive terminal with a first connection between the negative terminal and the anode and a second connection between the positive terminal and the cathode, and an air mover disposed to direct an air flow through the space and out of the opening.

A device for generating ultraviolet (UV) radiation whose wavelength is optimally tuned into the range of 250 to 285 nm, with peak wavelength in the range of 260 to 270 nm, which attains a Peak Germicidal Disinfection Effectiveness Index of nearly 100%, superior to conventional UV lights and lamps. The device comprises an ultraviolet light-emitting diode (LED) array, an operation control system, an airflow sensor with programmable sensitivity, and a surge protection module. The device is installed in conventional HVAC systems such as air conditioning systems and HVAC ducts to effectively disinfect airflow passing through to deactivate bacteria, viruses, and mold. Depending on the operating status of the HVAC systems, the device senses airflow passing through or going around and intelligently turns on and off the ultraviolet LED array to attain a longer lifetime.

A photocatalytic device has an ultraviolet light source and a plurality of photocatalytic structures, such as hydrated metallic catalyst surfaces. One or more catalyst substrates are adapted to support a hydroxyl radical reaction with ultraviolet light and water vapor that results in hydro peroxides and hydroxyl ions; an ultraviolet light source provides ultraviolet light to the catalyst substrates. The catalyst substrates comprising a hydrated multi-metallic catalyst having two or more elements or compounds selected from the group: Titanium dioxide, Titanium Platinum, Gold, Silver, Copper, Rhodium, Ruthenium, Lanthanum, Carbon, and Fluoride. In different embodiments, various combinations of these elements or compounds may be used in the catalyst, such as a combination of five or more of the elements or compounds.

A system for integrated pest management in an environment includes devices positioned within the environment. The devices each include a communications facility that enables transmitting signals to and receiving signals from a network device. The system further includes a network to provide communication between the network device to the devices. The network device receives communication and control functions from a remote computer for distribution to the devices. The system further includes a sensor positioned within the environment to transmit sensor data to the remote computer. The sensor is configured to detect and transmit a parameter for the environment to the remote computer. The system further includes a controller to control the emission of a fluid from a source of the fluid in fluid communication with the devices. The controller is configured to set or adjust an operation parameter of the devices in response to the sensor data.

The disclosure describes a method for disinfecting an aircraft cabin that includes injecting a non-peroxide disinfectant into an environmental control system of an aircraft and discharging cabin supply air through the environmental control system to discharge the non-peroxide disinfectant into the aircraft cabin. In some instances, the method includes aerosolizing the disinfectant into a plurality of liquid droplets while injecting the disinfectant into the environmental control system. In some instances, the injected disinfectant includes a non-corrosive, non-toxic disinfectant, such that the disinfectant may be discharged into the aircraft cabin in the presence of personnel in the aircraft cabin.

A bio-functional air filter medium is provided with a first filter layer that retains particles and at least one bio-functional carrier coated with or having embedded therein antimicrobial material and an anti-allergenic material. An air filter element having the bio-functional air filter medium is also disclosed. The bio-functional air filter medium is adapted to bind and capture allergens and block metabolism of bacteria while filtering air in high flow, low pressure drop residential or HVAC applications.