An electrostatic precipitation air cleaning system for removing mist, smoke or particles from an air stream. The electrostatic precipitation air cleaning system includes an ionizer, a collector, and an exhaust fan configured to draw the air stream through the ionizer and the collector. The electrostatic precipitation air cleaning system includes a high voltage power supply that provides an ionizer voltage to the ionizer and at least a first collector voltage and a second collector voltage. The electrostatic precipitation air cleaning system includes an electrostatic precipitator controller coupled to or integrated with the high voltage power supply and operable to select one of the at least the first collector voltage and the second collector voltage to provide to the collector.

An air conditioning apparatus according to an aspect of the present invention includes a main body including a suction part through which air is suctioned and a discharge part through which the air suctioned through the suction part is discharged, a fan disposed in the main body to allow the air to flow, an electric charge device coupled to the main body outside the main body to charge dust in the air, and a filter device disposed between the suction part and the discharge part in the main body to collect the charged dust particles.

The present invention discloses a low temperature plasma air purifier with high speed ion wind self-adsorption, which comprises a power module releasing a high-voltage direct current, a housing functioning as a support, an emitter electrode generating a strong ionization field, and a dust collecting electrode adsorbing various particles, wherein the emitter electrode comprises one or more needle-like conductors, circular holes fitted with each of the needle-like conductors are provided on the dust collecting electrode. The present invention has a simple structure and a small size, and realizes a high purification speed without the assistance of fans. The porous metal structure of the dust collecting electrode increases the contact area for air purification so that the dust collecting electrode has a strong adsorbability, which ensures a good air purification effect.

The present disclosure envisages an air purification system. The system comprises includes a shell, a blower, an electrode and a plurality of spikes. The shell has electrically-grounded wall(s), an inlet, and an outlet. The blower generates flow of air through the shell. The electrode is fitted within the shell between the inlet and the outlet and is electrically isolated from the shell body. The spikes extend from the electrode. The spikes have tips spaced apart from the inner surfaces of the walls and generate a corona between the tips and the inner surface of the walls when an high voltage electric current is passed through the electrode and thereby ionize gases and charge particles present in the air resulting in the particles being deposited on the inner surface of the walls of the shell.

An electric dust collecting device and an air conditioner having the same are disclosed. The electric dust collecting device includes a first filter unit including a plurality of discharge electrode plates which are spaced apart from each other and have spaces defined therebetween, a high voltage generator electrically connected to all of the plurality of discharge electrode plates, and a second filter unit disposed downstream of the first filter unit in an air flow direction and connected to a ground to cause corona discharge between the discharge electrode plates and the second filter unit, whereby particles electrically charged by corona discharge are collected at the second filter unit. The first filter unit has a simplified structure, and cleaning effect is improved.

Improvements in active field polarized media air cleaner include an aerodynamic front cowling to reduce static air resistance, a rear double hinge to reduce blow by, a resistive center screen permitting the sharing of high voltage power supplies while reducing the tendency to arc and allowing for a higher operational voltage, a dielectric media support frame to produce a more uniform electrostatic field and reduce blow by, while at the same time reducing the tendency to spray corona and/or arc at the edges of the center screen, a substantially flat conductive outer screen to produce a more uniform electrostatic field throughout the filter media and a high-voltage shield to reduce high-voltage arcing and the spraying of corona where the high-voltage probe contacts the center screen.

An electrostatic precipitator integrated with a double-skin facade of a building, includes: an outer window installed at an outdoor side of the building; an outer upper opening and an outer lower opening installed at upper and lower portions, respectively, of the outer window for indoor ventilation; an inner window providing a hollow layer between the inner window and the outer window by being installed at a room side facing the outer window; an inner upper opening and an inner lower opening installed at upper and lower portions, respectively, of the inner window for ventilation; at least one discharge electrode charging particles introduced into the hollow layer through the outer lower opening by being installed in the hollow layer; and dust collecting electrodes precipitating charged particles by being installed in contact with the hollow layer.

An ion generating device can include a housing having an opening, an anode and a cathode disposed within the housing and having a space between them in fluid communication with the opening, a power source having a negative terminal and a positive terminal with a first connection between the negative terminal and the anode and a second connection between the positive terminal and the cathode, and an air mover disposed to direct an air flow through the space and out of the opening.

An electrostatic filter according to one embodiment of the present invention is an electrostatic filter including a first layer and a second layer, the first layer being provided with a base and a plurality of firm protuberances extending from a face of the base and adjacent to the second layer, the protuberances including a stem having a root-ward side surface and a tip side surface, the second layer being provided with a base, a first angle constituted by either an angle between the root-ward side surface of the stem and the base of the first layer or an angle between the tip side surface of the stem and the base of the second layer being at least 90° and less than 180, and a second angle constituted by the other of the two angles thereof being at least 45° and less than 180°.

An ion filtration air cleaning device for cleaning air by use of electrostatic ion attraction. Air having suspended particles is drawn into the device through an inlet by a fan. An ionization source near the inlet generates ions. Electrical charge transfers from the ions to the suspended particles. The fan pushes the air and suspended charged particles toward an outlet. A filter located adjacent to the outlet operates by electrostatic attraction and filters the charged particles from the air, allowing cleansed air to be released from the device, with a reduced level of charged particle emission.