An air purification apparatus and methods of air purification and treatment using ionization is disclosed. In some embodiments, an ion generator apparatus comprises a modular electrode and a housing connected to the modular electrode. The modular electrode includes an elongated conduit body comprising a power receiving end and a conduit connecting end opposite the power receiving end; and a plurality of ion generating elements occupying different radial positions around a perimeter of the conduit body, the ion generating elements generating negative ions or positive ions in response to an applied alternating current. A first electrical connector on the power receiving end is connectable to a second electrical connector on the conduit connecting end of another conduit body, such that a plurality of conduit bodies can be connected together in a series. The housing is connected to a power receiving end of one of the conduit bodies of the modular electrode.

Disclosed is a method for disinfecting and cleaning to prevent contamination of a passenger vehicle, characterized in that it includes the following operations: —installing at least one filter and condenser in the ventilation circuit; creating a swirling vortex of a disinfectant liquid by a gas referred to as a driving gas; spraying the swirling mixture created onto the clothing and luggage of passengers before they enter the passenger compartment; and spraying the mixture created onto the solid surfaces and/or into the air of the passenger compartment to be disinfected. Also disclosed is a device for implementing the method.

An isolation chamber includes a plurality of walls and ceiling defining an internal chamber and a first and second door. The doors seal engagement with the walls. A fan filter unit is arranged to extract air from the internal chamber. The isolation chamber is arranged to couple to a doorway, and the coupling arranged to provide an airtight seal about the doorway.

An autonomous vehicle (AV) implements a health protocol that may reduce pathogen transmission between users of the AV. The AV is equipped with a thermal sensor that captures a body temperature of a user. The AV compares the user’s temperature to a threshold temperature, and if the user’s temperature exceeds the threshold temperature, the AV performs checks to ensure that the user’s planned trip follows current regulations or recommendations. For example, the AV confirms that the user is traveling between the user’s home and a healthcare facility. If the trip is permitted, the AV enables the user to enter the AV. The AV may include a disinfectant system for disinfecting the passenger compartment or surfaces after the user exits the AV.

The present invention provides for a system for disinfecting air circulated in an HVAC system. The system includes at least one spray ring forming a continuous loop surrounding an outer surface of HVAC ductwork. The system further includes a plurality of spray nozzles connecting to each of the spray rings in the at least one spray ring, wherein each nozzle extends through an aperture in the HVAC ductwork, wherein a space between each nozzle and each aperture is sealed by a rubber gasket.

The invention is a system and method for the initial and on-going disinfection of pathogens from building surfaces and plumbing fixtures. The disclosed system and method can be particularly useful in bathrooms to disinfect the drains of sinks, toilets, bathtubs, and other standing water sources that act as persistent reservoirs of deadly pathogens. The disclosed system and method include a disinfecting chemical storage or disinfecting chemical generation unit, a control module, a conduit configured to pump or convey the disinfecting fluid to a surface of the plumbing fixture, an attachment configured to attach a portion of the distribution structure piping, and at least two separate openings in the piping or other conduit.

A UV-C sterilization apparatus for a confined space having a closure which can be selectively positioned between a closed position, wherein the confined space is fully enclosed, and an opened position, wherein the confined space is accessible from an exterior thereof. The apparatus comprises means for connecting the apparatus to a power source to provide operating power to the apparatus and a housing dimensioned to fit within the confined space. The housing supports at least one sensor operative to detect when the closure is in the closed position and/or when the closure is not in the closed position; at least one source operative to emit UV-C light for irradiating the confined space; and a controller. The controller is connected to the at least one sensor and the at least one UV-C light source, and is operative to: determine when the closure is and is not in the closed position; activate the at least one UV-C light source to irradiate the confined space for a first fixed period of time when it is determined that the closure has gone to the closed position from not being in the closed position; periodically activate the UV-C light source to irradiate the confined space for at least a second fixed period of time, the periodic activation occurring following the first fixed period of time for so long as the closure remains in the closed position; and prevent the at least one UV-C light source from irradiating the confined space when it is determined that the closure is not in the closed position.

An ultraviolet irradiation device includes: a lamp house having at least one surface formed with a light extraction surface; an excimer lamp that is accommodated in the lamp house at a position apart from the light extraction surface in a first direction, the excimer lamp emitting ultraviolet light having a main emission wavelength belonging to a first wavelength band of 190 nm or more and 225 nm or less; a pair of electrodes that applies a voltage to a light-emitting tube of the excimer lamp; an optical filter that is disposed on the light extraction surface, and that substantially transmits the ultraviolet light having the first wavelength band and substantially fails to transmit ultraviolet light having a wavelength of 240 nm or more and 300 nm or less; and a light diffuser that is disposed between the excimer lamp and the optical filter in the lamp house in the first direction, for diffusing and reflecting light incident on the light diffuser.

A dynamic treatment system incorporates multiple pathogen reduction devices and sensors for enhanced pathogen reduction. The system can provide coordinated multi-level control to provide automated engineered control of pathogen reduction that is suitable for use in confined spaces, such as building and vehicle systems. Room level occupancy tracking provides biological load level estimates while pressure level sensing provides pathogen travel path estimation through the building. Combining this pathogen load information and airflow path information the system can drive room level and building level pathogen reduction device adjustments to enhance pathogen reduction based on expected pathogen travel. Zone level pathogen interception, height adjustable portable treatment devices, along with various application specific pathogen reduction devices can be integrated into the dynamic treatment system.

Apparatuses, systems, and methods for combined light disinfection are disclosed. In some examples, a light fixture may comprise a first light source configured to emit a first light comprising a wavelength in a range of 380-420 nanometers (nm) and a second light source configured to emit a second light comprising a wavelength in a range of 200-230 nm, wherein the first light source and the second light source are separated to prevent degradation, by the second light, of the first light source, and wherein the first light and the second light combine to form a disinfecting light configured to initiate inactivation of microorganisms.