A base body of a dust collector includes a pedestal, and partition plates arranged on the pedestal. The partition plates are made of insulating materials. A plurality of baffle partition plates are arranged in a length direction of the pedestal at intervals. A slot for inserting electrode sheets is formed between the adjacent partition plates. The dust collector includes the base, and further includes a collector electrode sheet and a discharging electrode sheet.

The following disclosure relates to an electrification device and an electrical dust collecting apparatus including the same capable of adsorbing and filtering fine dust included in air in an air conditioning apparatus such as an air conditioner or an air cleaner, and more particularly, to an electrification device and an electrical dust collecting apparatus including the same capable of having uniform electrification by fixing an electrification plate and a wire at accurate positions using a fixing member coupled to a case to support both end portions of the electrification plate and the wire.

A braking system for safely collecting brake dust produced by operation of a braking mechanism. The braking system comprises a collector apparatus coupled with a braking mechanism. The collector apparatus is able to include a shroud that surrounds the braking mechanism and a catch element coupled with the shroud for collecting brake dust exiting the shroud. As a result, when coupled with the braking mechanism, the collector apparatus is able to ensure that most or all brake dust, such as copper or other particles from the braking mechanism that break off from the breaking mechanism during operation of the braking mechanism, are removed from the braking mechanism and collected by the filter/catch of the collector mechanism.

A cleaning device for cleaning an air-ionizing part of an electrode. The device comprises a cleaning member arranged to be in physical contact with the air-ionizing part of the electrode, the air-ionizing part of electrode and the cleaning member being arranged to slide relative to each other. The cleaning device further comprises an actuator arranged to activate the relative motion between the air-ionizing part of the electrode and the cleaning member. There is also provided an ionization electrode comprising the air-ionizing part and the cleaning device, as well as a ultrafine particle sensor, an air ionizer or an electrostatic air cleaner comprising such an electrode.

An electrostatic charging air cleaning device having first and second pre-chargers. The first pre-charger is configured to generate a first corona discharge to electrostatically charge PM in the incoming air stream with a first charge to form a first exiting air stream exiting the first pre-charger. The second pre-charger is configured to generate a second corona discharge to electrostatically charge PM in the incoming air stream with a second charge to form a second exiting air stream exiting the second pre-charger. The device also includes a separator having apertures such that PM in the second exiting air stream passes through the separator to agglomerate with PM in the first exiting air stream to form agglomerated particles. The apertures are sized such that the agglomerated particles are larger than the apertures to preclude the agglomerated particles from reentering the second exiting air stream.

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.

An electrostatic air cleaner may include a corona charging stage, a precipitation stage, and an air mover (fan). The corona charging stage may include a first and second array placed under electrical potential difference capable of generating a corona discharge. The first array may be substantially parallel corona wires and may be located downstream of an air penetrable second array. The precipitation stage may be downstream from the corona charging stage. The spacing between the first array and the second array may be less than the distance of the precipitation stage to the second array. The air mover may be upstream of the corona charging stage or downstream of the precipitation stage or between these stages. The arrangement allows for higher ion output downstream of the first array with the same voltage and power consumption resulting in greater particle charging and better air cleaning efficiency.

An electrostatic device, for example, an electrostatic air cleaner, may be provided with a corona discharge electrode; a collecting electrode; a power source connected to the corona discharge electrode and to the collecting electrode; an electrical parameter sensor; and a power supply system. The control system may receive a signal from the electrical sensor. The control system evaluates the electrical performance of the system and initiates appropriate or corrective action.

Disclosed is a filtering device for removing fine dust, the filtering device comprising: a charger including a case having one side, through which fine dust is introduced, a plurality of beam electrodes inserted into the case and spaced apart from each other along a depth direction of the case, line electrodes arranged inside the case and spaced apart from the plurality of beam electrodes, respectively, and a dust collector including a first dust collecting electrode to which a first dust collecting voltage is applied, a second dust collecting electrode to which a second dust collecting voltage is applied to generate a voltage difference with the first dust collecting electrode and a dielectric spacer disposed between the first dust collecting electrode and the second dust collecting electrode to space the first dust collecting electrode and the second dust collecting electrode apart from each other and to serve as a dielectric.

This publication discloses an electrostatic filter construction, to be positioned in air ducts or ventilation channels, which electrostatic filter construction includes a charging unit, which charges the particles to be filtered into a first electric potential and arranged in the filter construction in the path of the air flow before filter elements, electrically conducting electrodes connected to a second electric potential different to the potential of the charged particles and set substantially parallel to the direction of the airflow, and bag shaped filter elements positioned after the charging unit in the path of the air flow. According to the invention each bag shaped filter element has at least one designated UV-light source and an element of photo catalytic material like TiO.sub.2.