A ventilation type air cleaner includes a housing having a central rotating shaft including a purification part, a washing part, and a sterilization part in a circumferential direction with respect to the central rotating shaft, a rotating unit installed to be rotatable about the central rotating shaft as a rotation center in the housing, a filter assembly detachably coupled to the rotating unit and configured to sequentially pass through the purification part, the washing part, and the sterilization part according to rotation of the rotating unit, an intake duct connected to the housing and configured to guide a flow of air introduced to the purification part, and an exhaust duct connected to the housing and configured to guide a flow of air discharged from the purification part.

Disclosed herein is an air curtain system including a plant cultivation device for air purification. The air curtain system includes: an air purification wall part forming a vertical body of the air curtain system and having a sidewall on which plants are planted, the air purification wall part drawing in air and filtering out pollutants including fine dust and ultrafine dust from the drawn-in air; an air curtain injection part forming a roof of the air curtain system and having an air discharge port formed along a periphery of the roof, the air curtain injection part receiving the air filtered through the air purification wall part and discharging the received air vertically downwards through the air discharge port; and an air suction part forming a floor of the air curtain system and having an air suction port formed along a periphery of the floor, the air suction part suctioning the air discharged through the air discharge port of the air curtain injection part.

The disclosed system comprises a primary air curtain system and one or more optional apparel and/or accessory air curtain subsystem components. The primary system and subsystem(s) are configured to create a directionally controlled air curtain effect that repulses, repels, redirects, neutralizes, and/or disperses airborne infectious pathogens, carcinogens, chemicals, and other contaminants away from the body of a user or a surface susceptible to foreign contamination within a protected enclosure.

Indoor air is purified using a purifying solution in an arrangement capable of removing formaldehyde and other pollutants, such as, for example, particulates. The arrangement can prevent re-vaporization of volatile compounds and can generate air that has been humidified or dehumidified. In one approach, incoming air is contacted with the purifying solution in a packed bed.

The invention relates to an exhaust air purification device for a livestock stable comprising at least one exhaust air scrubber having a filter body that can be wetted with a scrubbing liquid or that can absorb a scrubbing liquid; and a scrubbing liquid container holding a scrubbing liquid; wherein the at least one exhaust air scrubber is arranged on a moving device, the moving device being designed and arranged to immerse the at least one exhaust air scrubber completely or partially into the scrubbing liquid in the scrubbing liquid container.

An apparatus and a method are provided for a heating, ventilation, and air conditioning (HVAC) system air filter for a building ventilation system. The HVAC system air filter comprises a supportive frame configured to orient the HVAC system air filter within the building ventilation system. A composite filter medium retained within the supportive frame comprises a cotton gauze portion and an electrostatic portion. The cotton gauze portion is configured for treatment with a filter oil composition to enhance airflow and filtration of air flowing through the composite filter medium. The electrostatic portion is configured to electrostatically attract and agglomerate airborne molecular contaminants and volatile organic compounds (VOCs) as small as 0.001 microns in diameter. In some embodiments, the composite filter medium comprises substances configured to release a fragrance into air passing through the composite filter medium.

This application relates to a humidifying device, including a shell, an air duct and an air blowing apparatus disposed in the shell, wherein a mist outlet channel, an atomizing cavity and a heating cavity communicated with the mist outlet channel are disposed in the shell; the air duct includes a first air duct communicated with the atomizing cavity and a second air duct communicated with the heating cavity; the air blowing apparatus is provided with an air outlet member, and the air outlet member is aligned with the first air duct and the second air duct, and is configured to supply a first air flow to the first air duct and supply a second air flow to the second air duct. When the humidifying device operates, the first air flow forms an atomized air flow and the second air flow forms a heated air flow then are mixed.

This application relates to a humidifying device, including a shell, an air duct and an air blowing apparatus disposed in the shell, wherein a mist outlet channel, an atomizing cavity and a heating cavity communicated with the mist outlet channel are disposed in the shell; the air duct includes a first air duct communicated with the atomizing cavity and a second air duct communicated with the heating cavity; the air blowing apparatus is provided with an air outlet member, and the air outlet member is aligned with the first air duct and the second air duct, and is configured to supply a first air flow to the first air duct and supply a second air flow to the second air duct. When the humidifying device operates, the first air flow forms an atomized air flow and the second air flow forms a heated air flow then are mixed.

A filter system includes a liquid filter unit, a HEPA filter unit and an air vent cover. The filter system is installed into an in-room air vent and purifies air received from a forced air system prior to its entrance into a room via the in-room air vent. In some embodiments, the filter system further includes a means for controlling a temperature of the air such that users are able to independently control air temperature in each room of a building.

A device for producing and treating a gas stream is provided that includes an enclosure, of which the lower part is submerged in a liquid supply open at the top and includes at least one liquid intake opening. The submerged lower part of the enclosure contains a volume of this liquid and at least one opening for discharging a gas stream, positioned above the surface of the volume of liquid contained in the enclosure. The device further provides for injecting a gas stream including at least one injection conduit and extends in the upper part inside the enclosure outside the volume of liquid. During operation of the device an incoming gas stream is introduced to create an outgoing gas stream, treated by direct contact with said volume of liquid that is discharged outside the enclosure. A facility inclusive of the device and method of operation are also provided.