The sterilization mask with UVC reflective chamber includes a chamber with reflective liner, through which inhaled and exhaled air passes. The reflective chamber is also referred to as a sterilization chamber. Using a reflective chamber ensures each photon of UVC light has a long life, thus dissipating slowly. Increasing the life of the UVC photons decreases the quantity of photons that must be created. Thus, less power is required to achieve the sterilization. Sterilization is defined as a 6-log reduction (99.9999%) of various microbes including viruses, bacteria, and spores. The reflective chamber is made reflective using an UVC internal reflective surface. This surface is preferably formed from ePTFE, or other equivalently UVC reflective material.

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.

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.

A fluid treatment apparatus including a photocatalyst filter having a first surface and a second surface, a light source unit spaced apart from the photocatalyst filter to provide light to the first surface, a housing including an inlet, an outlet, and a flow path formed between the photocatalyst filter and the light source, and a guide member disposed at one side of the housing and including at least one slat to guide a movement direction of a fluid, in which the slat is inclined at least in a direction closer to the first surface of the photocatalyst filter along an advancing direction of the flow path when an air flow rate of the fluid has a first value, and in a direction away from the first surface of the photocatalyst filter along the advancing direction when the air flow rate of the fluid is greater than the first value.

A refrigerator includes a deodorizer installed on an upper surface of a storage compartment. The deodorizer includes a housing in which a flow path is provided, a suction port provided on a lower surface of the housing to suck air, a discharge port provided in the front of the suction port to discharge air, a photocatalytic deodorizing filter disposed at an inner side of the suction port, and a filter light source configured to irradiate light to the photocatalytic deodorizing filter, the flow path is configured to guide air from a rear lower side where the suction port is positioned to a front lower side where the discharge port is positioned, and the filter light source is disposed above the photocatalytic deodorizing filter to face the photocatalytic deodorizing filter in a state of being spaced apart from each other, and positioned above air passing through the flow path.

A compact diffuser integrates an atomizer and droplet separator into a surrounding sleeve, threadable to a bottle neck as an assembly. The assembly fits into a base, housing a motor and air pump, sealing the sleeve to a silo in the housing. Controls set time span of intermittent operation, intervening delay, and volumetric flow rate. The assembly pops into (and out of) the top end of a silo in the base, registering (aligning) circumferentially and axially to seal an air path from the pump to the atomizer. Access for applying force to the bottom of the assembly facilitates popping out the assembly when empty, or to simply change scent by changing out the assembly. Entire assemblies may be stored to simplify exchange and reduce chances for spills from reservoirs.

Provided is an air cleaner, and more specifically, to an air cleaner in which a filter part using a photocatalyst is formed in a module type to facilitate replacement and cleaning and which includes an insert fan which is disposed inward from a suction port of a casing forming an exterior and including the suction port disposed at one side and a discharge port disposed at the other side, and suctions ambient air, a driving motor provided to be axially detachably coupled to the insert fan in a direction from the discharge port, and a suction unit fixing part in which an accommodation space, into which the insert fan and the driving motor are fixedly inserted in the direction from the suction port toward the discharge port and which is finished by inserting a cover member in the direction from the discharge port.

A surgical smoke evacuation system includes a smoke evacuator, a suction instrument, a suction conduit, and a disinfecting device. The smoke evacuator includes a suction generator configured to create a vacuum force. The suction instrument is configured to couple to the smoke evacuator via the suction conduit. The disinfecting device is operably coupled to the suction conduit or the smoke evacuator. The disinfecting device includes a housing defining an inner chamber, an inlet extending from a distal end of the housing and in fluid communication with the inner chamber, an outlet extending from a proximal end of the housing and in fluid communication with the inner chamber, and an ultraviolet light emitting diode board. The ultraviolet light emitting diode board includes at least one ultraviolet-c light emitting diode disposed in the inner chamber and configured to disinfect surgical smoke within the inner chamber.

A device for disinfecting surfaces is provided. One embodiment has a plurality of UV light (energy) emitting LEDs residing in an enclosure, wherein emitted UV energy passes through a lens onto a surface being disinfected; a heat dissipator that receives heat generated by the UV emitting LEDs; and a fluid moving device. The enclosure has a fluid heating passageway that is in fluid contact with the heat dissipator, has a transfer passageway with a distal end that is fluidly coupled to a proximal end of the fluid heating passageway, and has a return passageway that is fluidly coupled to a proximal end of the transfer passageway and that is fluidly coupled to a distal end of the fluid heating passageway. During operation, the fluid moving device operates to circulate a cooling fluid through the fluid heating passageway, the transfer passageway, and the return passageway. Heat transfers to the ambient environment.

Method for increasing efficiency of a pathogen inactivation via enhancing UVC light absorption at such pathogen by multiple diffuse scattering of the light at a wall defining a substantially closed volume, thereby increasing a number of angles at which the pathogen is being irradiate as compared with a direct irradiation of the pathogen with a beam of such light.