The invention relates to a sanitation treatment system and methods for use in association with commercial passenger vehicles such as aircraft. The sanitation system may operate along with a filtration system in an air distribution system associated with an aircraft or like commercial passenger vehicles and/or to provide disinfected air and surfaces in the passenger cabin associated with the aircraft or like vehicle.

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.

An aircraft air conditioning system comprises intakes ram air from outside the aircraft, and uses a heat exchanger to pretreat (preheat or precool) some of the ram air. The system further includes a heat recovery unit that uses the cabin exhaust, air to further heat the pretreated ram air, resulting in conditioned ram air. The system further includes an air conditioning pack unit to produce a first conditioned air stream from the conditioned ram air. The system further includes a mixing box to mix the first conditioned air stream with another subflow of ram air to produce a second conditioned air stream.

An air management system of a vehicle having a conditioned area includes at least one duct defining a flow path for delivering air to the conditioned area and a sterilization system associated with the at least one duct. The sterilization system including at least one light source operable to emit a germicidal ultraviolet light into the flow path defined by the at least one duct to sterilize the air to be provided to the conditioned area.

A system including a passenger area of a vehicle, an air distribution system arranged in fluid communication with the passenger area, and a fluid movable through the air distribution system to the passenger area, the fluid having a cleaning agent entrained therein.

An operating method of a vehicle cabin air supply device comprising taking fresh air from outside the cabin, diverting the fresh air to an air exhaust during an exhaust duration period after starting the air supply device, before injecting the fresh air into the cabin, such that the fresh air injected in the cabin after the exhaust duration period minimizes unpleasant odors in the cabin. A vehicle cabin air supply device and an aircraft comprising such a device is also provided.

An aircraft pressurized air system and method is disclosed. The system includes a compressor that receives and compresses outside air, and an air cycle machine that receives compressed air from the compressor and directs conditioned air to an aircraft pressurized zone. The system also includes a contaminant sensor disposed along an air flow path between the compressor and the aircraft pressurized zone, comprising an optical guide, a metal organic framework on an exterior surface of the optical guide in operative fluid communication with air from the air flow path, a light source in communication with the optical guide at a first end of the optical guide, and a light detector in communication with the optical guide at a second end of the optical guide.

A device for generating an upwardly blowing air curtain to protect against airborne pathogens and pollutants.

An air management system for a common indoor room or space that comprises a plurality of air outflow apertures or vents, a plurality of air curtains having at least a portion of the air curtains separated from one another, a plurality of separated air suction intakes, and an air sterilization and/or air cleaning mechanism.

An air management system for a common indoor room or space that comprises a plurality of air outflow apertures or vents, a plurality of air curtains having at least a portion of the air curtains separated from one another, a plurality of separated air suction intakes, and an air sterilization and/or air cleaning mechanism.