Surface disinfection for enclosures with Ultra-Violet (UV) light and illuminating such enclosures with visible light. Particular embodiments relate to limiting the transmission of viruses and bacteria in the interior space of an aircraft, such as a lavatory, through the use of UV light application, while providing visible light to passengers of such lavatory, both in a safe and compliant manner. This disclosure provides a lighting system and method that combines a visible light emitter and a UV light emitter into a single light system module. Although UV light is a preferred method of neutralizing pathogens, its use is not safe for human exposure. Accordingly, the disclosed lighting system is capable of detecting the presence of an occupant within an enclosure or defined space and only allows the visible light emitter to function (and prevents the UV light emitter from functioning) while people or animals are present within the electromagnetic range for the lighting system. The lighting system can then detect the absence of an occupant within an enclosure or defined space, prior to activating the UV light emitter, and once absence is detected, the UV light emitter can be activated by a controller.

Apparatus, methods and instructions for disinfecting air. The apparatus may include, and the methods may involve, a fixture. The fixture may include a germicidal light source. The fixture may include a fan. The fan may circulate air through a volume into which the germicidal light source propagates germicidal light. The light source may be configured to emit, upward from a horizontal plane, a beam that, absent reflection off an environmental object, does not cross the horizontal plane. The apparatus may include a shield that prevents light from the light source from crossing the horizontal plane. The sensor may face upward from the horizontal plane. The sensor may face downward from the horizontal plane.

A system including tubing and a filter configured to be fluidly coupled to a vacuum source and to a heater/cooler unit by the tubing. The filter includes a filter container having negative air pressure in the filter container provided by the vacuum source to pull aerosol from the heater/cooler unit into the filter container and eliminate and/or reduce the aerosol emitted from the heater/cooler unit.

A hood for a sterilization system including a return line (132) to provide for airflow between first and second ends; a hood (116) having an opening situated in a top wall and configured to be coupled to a tube; and couplers (126) configured to couple the hood to adjacent ones of a plurality of support struts (114) to configure the hood to form an opening (128) leading to a cavity (129), wherein the cavity is configured to receive at least a portion of a head of a subject (101) receiving respiratory gas from a ventilator (170) such that the plurality of support struts are situated outside of the cavity, wherein the hood is configured to enable ambient air into the airflow while over the portion of the head of the subject.

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.

A system and a method for disinfecting air from airborne pathogens, for example, viruses, bacteria, etc., in an airflow system, are provided. One or more first reflectors reflect a high power, ultraviolet laser beam (UVLB) from an ultraviolet laser(s) into one or more airflow channels of the airflow system. One or more second reflectors are attached to internal surfaces of the airflow channel(s), in a free space optical connection to the first reflector(s), for reflecting the UVLB and increasing contact, utilization, and interaction of the UVLB with the airflow in the airflow channel(s) for irradiating and disinfecting the air therein. Air supply components on a ceiling blow the disinfected air from an airflow channel into an enclosed space for inhalation by occupants in the enclosed space, while air exhaust components on a floor exhaust air exhaled by the occupants into an airflow channel, thereby precluding cross-contamination in the enclosed space.

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.

An open self-service sales system based on positioning of customers includes an open partitioned weight-sensing rack including multiple storage subareas. The open self-service sales system further includes a positioning module and an automatic weighing unit which are connected to the central control module. The position information of the customer is bound with the subareas to accurately identify customers and the purchasing behaviors. The data flow is simple and reliable, and a large number of computing is avoided, which is suitable for large customer flows.

Systems and methods for creating a germicidal partition. A germicidal partition system including at least one negative ion generator including at least one negative high-voltage source, at least one high-voltage conductor electrically connected to the at least one negative high-voltage source, and at least one anode electrically connected to the at least one high-voltage conductor, and at least one fan configured to draw air into the system, direct the air through the at least one negative ion generator, and output the air through at least one manifold, wherein the air outputted through the at least one manifold is configured to create a barrier between a first air mass and a second air mass, such that the outputted air reduces at least one of the transfer of contaminants or the concentration of viable contagions between the first air mass and the second air mass.

An air purification system includes a conduit extending between an inlet and an outlet, each in fluid communication with an enclosed environment. Ambient air from the enclosed environment enters the conduit via the inlet and treated air exits the conduit and enters the enclosed environment via the outlet. The system further includes a fibrous filter disposed within the conduit and configured to treat the ambient air thereby generating the treated air, and a renewal unit disposed within the conduit and configured to renew the fibrous filter.