An air filter and a method of air filtration using the said air filter are described. The air filter may comprise a filter media layer adapted to capture and filter one or more impurities from air. The air filter may further comprise one or more acoustic wave generating means attached at one or more sides of the filter media layer. The one or more acoustic wave generating means may generate acoustic waves to be propagated into the filter media layer. The propagation of the acoustic waves into the filter media layer may facilitate the filter media layer to enhance the filtration efficiency of the air filter. The air filter may further comprise a pre-programmed chip to control the frequency of the acoustic waves generated. Further, air filter may comprise a battery adapted to supply power to the one or more acoustic wave generating means and the pre-programmed chip.

A filter assembly and a drying apparatus having the filter assembly are proposed. The filter assembly (180) may purify air introduced into the main body (100) of the drying apparatus. The filter assembly (180) may be protruded by a predetermined distance to a side surface of the main body (100) by the moving plate (190). The filter frame (182) protruded by the moving plate (190) may be removed from the moving plate (190) to perform maintenance of filters (184, 186, 188).

A ventilation system for a mobile structure, in particular a motor vehicle, includes: a variably adjustable filter device including at least one controllable, variable filter characteristic with regard to a pollutant class; means for collecting information about the air quality in the surroundings of the mobile structure and in particular information about the air quality in an interior of the mobile structure; and a control unit for varying filter characteristics of the filter device in a variable, in particular continuous, manner, on the basis of the information about the air quality.

The current invention are air filtration devices for outdoor use. The filtration systems would be installed on residential, commercial, and industrial buildings. They would be placed on a large amount of buildings to improve air quality over a large area. As the devices will be installed on regularly used buildings, they have a double casing that dampens noise. The filters will remove fine particulates and many problematic air pollutants. The entire system is powered by a low consumption battery.

An ultraviolet (UV) air filter device for an HVAC system is disclosed. An example UV air filter device may include a body having a support structure and a filtration media. The example UV air filter device may also include a plurality of ultraviolet (UV) lights provided in the filtration media itself and/or mounted to the support structure. The example UV air filter device may also include a power source to provide electrical energy to the plurality of UV lights. The example UV air filter device may also include a fan or fan device, fan prop or rotor blade to circulate air across the UV lights.

An air purifier according to the present disclosure includes a first blower having a first fan configured to generate an air flow from a first suction part toward a first discharge part, a second blower having a second fan configured to generate an air flow from a second suction part toward a second discharge part, an installation space part configured to be formed between the first blower and the second blower, a power transmitter configured to be positioned inside the installation space part, to be fixed to any one of the first blower and the second blower, and to transmit wireless power, and a power receiver configured to be positioned inside the installation space part, to be fixed to the other one of the first blower and the second blower, and to receive wireless power transmitted from the power transmitter.

Systems, methods, apparatuses, and devices for removal of undesired materials are disclosed. Production of desired materials may result in the production of undesired materials. The systems, methods, apparatuses, and devices, may provide for removal of the undesired materials from various environments (e.g., industrial, commercial, residential, natural, etc.). The undesired materials may be removed in a substantially continuous manner and may limit or prevent contamination of an ambient environment with the undesired materials. The undesired materials may be removed with high-pressure vacuum through a fluid flow path that keeps the undesired materials from the ambient environment.

A room air purifier has a body with a frame at least partially defining an interior chamber and an opening to the chamber. A purification mechanism in the chamber includes one or more filters and one or more blowers. A panel is configured to removably mount to the body and cover the opening to the chamber. A base mounted to the body, and each leg of a set of legs is mounted to the base. A nonwoven fabric portion covers at least part of the body. The blower when activated generates an inflow through the nonwoven fabric portion and a filter, and an outflow though the body, all while hidden from view in what to an observer looks like an article of furniture.

The present disclosure is directed methods and apparatus of a V-Bank filtration system capable of maintaining desired air flow rates while effectively filtering the air. These methods and apparatus charge particles and then capture those particles in a filter medium. Once captured in the filter medium, micro-organisms are exposed to high energy electric fields that may degrade and ultimately destroy the captured micro-organisms. Electric fields generated within portions of the V-Bank filter apparatus may also be contained within the portions of the filter apparatus based on exterior parts of these portions being grounded at Earth ground potential. Magnetic fields (or electro-magnetic fields) associated with the generated electric fields may also be contained within the portions of the apparatus based on the exterior parts of these portions being grounded.

A filtering apparatus includes a filter with meshes having a periphery enclosed by a metal frame, an antibacterial material layer formed on the filter, a negative ions generator stretching into the filter for generating negative oxygen ions, and an electrode plate disposed on the metal frame. The metal frame is affected by the electrode plate to produce a high voltage electric field, thereby activating the antibacterial material layer under a piezoelectric effect to release more negative oxygen ions and silver ions. The negative oxygen ions and the silver ions collide together within the filter and become finer, thereby absorbing smelly odor passing through the filter to the maximum extent, purifying air, destroying germs, and promoting the air quality of the environment.