An air purification system for purifying atmospheric air has an ionization chamber that includes a needle arrangement. The needles create a dense and strong electric field when a high voltage is passed to them by the effect of dual charge ionization due to which the suspended particles in the polluted air get clumped together and fall. The second invention is an air monitoring system facilitating a two-way communication with external information sources. It contains gas sensors comprising of an ambient noise sensor, temperature and humidity sensor, and sensors to measure the amount of oxides of nitrogen, Sulphur, carbon and size of suspended particles in the air. The third invention is a theft protection module for the safe keeping of an air purification system.

An air conditioner includes: a housing having an inlet on one side thereof and an outlet on another side thereof; a fan disposed in the housing and by which air flows from the inlet to the outlet; and an electrostatic dust collector disposed in the housing and configured to remove foreign matter from air introduced into the inlet, allowing the air introduced into the inlet to be filtered. The electrostatic dust collector includes: at least one electrostatic filter including a first side wall and a second side wall disposed in an opposite direction to the first side wall; a first filter handle coupled to the first side wall; and a second filter handle coupled to the second side wall.

A method of making an electronic air filter that requires obtaining a first metallic plate comprising copper and a second metallic plate comprising copper. The method also requires creating a first pattern of slits through the first metallic plate's thickness and a second pattern of slits through the second metallic plate's thickness and expanding (a) the first slitted metallic plate to form a first aperture metallic plate and (b) the second slitted metallic plate to form a second aperture metallic plate wherein when the first aperture metallic plate and the second aperture metallic plate are properly aligned and positioned in an electronic air cleaner device then the apertures in the first aperture metallic plate and the apertures in the second aperture metallic plate misalign or do not align with each other. Another requirement is that the method calls for applying a dielectric conducting and antimicrobial agent polymer material to (a) the first aperture metallic plates to form a first coated, aperture metallic plate and (b) the second aperture metallic plates to form a second coated, aperture metallic plate.

Provided are purification systems and methods of using such systems for purifying various environments, such as indoor air, outdoor air, vehicle emissions, and industrial emissions. A purification system comprises an ionizing purifier having a substrate and an active coating. The active coating comprises a pyroelectric and/or piezoelectric material as well as a radioactive material. During the operation, an incoming stream is directed toward the active coating while controlling the average pressure exerted on the active coating. This contact between the incoming stream and the active coating generates negative ions from components of the incoming stream via the change in temperature and pressure/force/vibration, etc. The negative ions then interact with pollutants, transforming them into safe, purified materials of the outgoing stream. Unlike the pollutants in the incoming stream, the purified materials are non-harmful, and/or can be easily removed from the outgoing stream, e.g., by filtering and/or other separation techniques.

A commercial cooking equipment exhaust hood system includes a hood structure including an inlet opening to an exhaust flow path through the hood. A filter unit is positioned along the exhaust flow path. An electrostatic precipitator unit is downstream of the filter unit. The electrostatic precipitator includes an ionizing section upstream of a collecting section. The ionizing section includes a plurality of ionizing flow paths having side profile patterns that vary in width between at least one wide section and at least one narrow section. The collecting section includes a plurality of collecting flow paths with side profile patterns of substantially uniform width and a repeating undulating side profile pattern. A UV light source may also be provided within the hood, with a controller operatively connected to control the UV light source via a dimmer to enable selective production various UV levels.

An air purifier comprising at least one removable particulate filter, a fan or impeller and a motor for driving said fan or impeller, a top and, opposite thereto, a base and means for elevating said base from the ground, at least one side surface connecting said top and base, a base air intake disposed on said base and facing the ground in a working configuration a top air intake on said top and facing away from the ground in a working configuration and an air outlet located on said side surface.

An atmospheric water harvesting apparatus includes a post, a water capturing unit, a drive bearing, a motor, a water collecting member, and a power source. The water capturing unit comprises a cylindric wall. The cylindric wall is positioned concentrically with the post. The cylindric wall comprises an inner surface and an outer surface. The cylindric wall forms an air passageway having an air inlet and an air outlet. The inner surface of the cylindric wall is coated with a layer of triboelectric material. The drive bearing is rotatably mounted about the post. The drive bearing is provided with a plurality of radial bars. The water collecting member is located beneath the water capturing unit to collect water captured by the water capturing unit. The power source is electrically connected to the motor.

An electrostatic air cleaning device comprises a particle charging section, a particle precipitation section, a current sensor for measuring an electric current flowing through electrode plates of the precipitation section and a relative humidity sensor. The voltage applied to the electrode plates and the air flow through the device are controlled in dependence on the measured current flowing through the electrode plates. In this way, control is provided to prevent excessive electric leakage currents inside the precipitation section, that may lead to a hazard, and to optimize the energy efficiency of the cleaning device in relation to its cleaning performance. The relative humidity information also enables diagnosis of the cause of the high leakage current and the status of the precipitation section concerning the amount of precipitated particles therein.

A filtering apparatus with a Body Force Generating Apparatus (BFGA) facilitates diffusion of objects of interest from a first reservoir to a second reservoir. The BFGA applies a body force per unit mass on objects of interest, such as air molecules, water molecules, dust particles, ions, electrons, and other types of elementary particles or constituent parts within a medium. The force field generated by the BFGA gives rise to a spatially varying potential field having a spatial or temporal gradient that is sufficiently strong at at least one location in space or instant in time such that objects of interest experience a departure from normal statistical behavior within that field. This can be employed to increase the pressure of objects of interest in a second reservoir relative to a first reservoir. A pressure modification apparatus and method can convert thermal energy into useful energy, such as mechanical work or electricity.

A carbon fiber charging device and an electrical appliance therefor are provided. The carbon fiber charging device includes a carbon fiber electrode configured to generate electrons and charge surrounding dust, a protective case configured to cover the carbon fiber electrode such that a foreign object having a size of a human finger is not able to contact the carbon fiber electrode, the protective case including a top wall facing a tip of the carbon fiber electrode and provided with a through hole and a side wall surrounding an outer circumferential surface of the carbon fiber electrode, and an electron generation stabilization device provided in the protective case and configured to allow the carbon fiber electrode to generate electrons stably.