A dust collector in an embodiment includes: a discharge electrode having tips; a counter electrode including a plurality of conductor plates each having an end opposed to the discharge electrode and arrange side by side in a plate thickness direction; and a power supply that applies voltage between the discharge electrode and the counter electrode. The counter electrode has a first region closer to the tips and a second region farther from the tips than is the first region, and at least one of an interval between or a distance from the tips or a shape of at least part of the ends in the first region is different from the interval, the distance, or the shape in the second region.

An easy-to-clean separable purification core for an air purifier includes an inner cavity lining body, a collector module and a repeller module that are detachably inserted one in the other. The collector module includes a first collector cell and a second collector cell that are nested from top to bottom and are detachable with respect to each other, the two collector cells match each other in shape and dimension size and are respectively provided with collector pieces parallel to each other, and the spacing between two adjacent collector pieces in each collector cell is four times of an original spacing. In an assembly state of the purification core, the collector module, the repeller module, and the inner cavity lining body are nested one in another to form an integral component.

An easy-to-clean separable purification core for an air purifier includes an inner cavity lining body, a collector module and a repeller module that are detachably inserted one in the other. The collector module includes a first collector cell and a second collector cell that are nested from top to bottom and are detachable with respect to each other, the two collector cells match each other in shape and dimension size and are respectively provided with collector pieces parallel to each other, and the spacing between two adjacent collector pieces in each collector cell is four times of an original spacing. In an assembly state of the purification core, the collector module, the repeller module, and the inner cavity lining body are nested one in another to form an integral component.

To provide an electric precipitator which can collect more reliably dusty foreign matter emitted during material processing such as stamping process utilizing an electrostatic force, has excellent installability, and can be used safely. Provided is an electric precipitator that collects dusty foreign matter by an electrostatic force, including: a laminated sheet at least including a dust collection layer that holds the dusty foreign matter in contact, a first electrode layer, a second electrode layer, and an insulation layer, the dust collection layer, the first electrode layer, the second electrode layer, and the insulation layer being laminated; and a power supply device that applies voltages across the first and second electrode layers. The insulation layer at least has a first insulation layer that insulates the dust collection layer and the first electrode layer, a second insulation layer that insulates the first electrode layer and the second electrode layer, and a third insulation layer that insulates the second electrode layer and a portion under the second electrode layer. Films having a surface resistivity of 10.sup.4 to 10.sup.8 are used for the first and second electrode layers.

To provide an electric precipitator which can collect more reliably dusty foreign matter emitted during material processing such as stamping process utilizing an electrostatic force, has excellent installability, and can be used safely. Provided is an electric precipitator that collects dusty foreign matter by an electrostatic force, including: a laminated sheet at least including a dust collection layer that holds the dusty foreign matter in contact, a first electrode layer, a second electrode layer, and an insulation layer, the dust collection layer, the first electrode layer, the second electrode layer, and the insulation layer being laminated; and a power supply device that applies voltages across the first and second electrode layers. The insulation layer at least has a first insulation layer that insulates the dust collection layer and the first electrode layer, a second insulation layer that insulates the first electrode layer and the second electrode layer, and a third insulation layer that insulates the second electrode layer and a portion under the second electrode layer. Films having a surface resistivity of 10.sup.4 to 10.sup.8 are used for the first and second electrode layers.

Filter media for an active field polarized media air cleaner includes two layers of dielectric material with a higher resistance air permeable screen sandwiched between the lower resistivity electric layers. The filter media may further include a mixed fiber filter layer having fibers from different sides of the triboelectric scale. The filter media may further include a layer of relatively higher density dielectric material followed by a layer of relatively lower density dielectric material.

Filter media for an active field polarized media air cleaner includes two layers of dielectric material with a higher resistance air permeable screen sandwiched between the lower resistivity electric layers. The filter media may further include a mixed fiber filter layer having fibers from different sides of the triboelectric scale. The filter media may further include a layer of relatively higher density dielectric material followed by a layer of relatively lower density dielectric material.

The present invention relates to a method for producing an ionization rod and an ionization rod produced according to the method. The invention is characterized in that in a U-shaped duct profile (1) a main line (4) for supply current is placed, in that from this main line branch lines (3) are connected with adjacent carbon fibre brushes held in protective sleeves and in that a thermosetting plastic are laid into the duct profile covering the main part of the protective sleeves.

The present invention relates to a method for producing an ionization rod and an ionization rod produced according to the method. The invention is characterized in that in a U-shaped duct profile (1) a main line (4) for supply current is placed, in that from this main line branch lines (3) are connected with adjacent carbon fibre brushes held in protective sleeves and in that a thermosetting plastic are laid into the duct profile covering the main part of the protective sleeves.

The present invention relates to the use of corrosion, temperature and spark resistant electrically conductive components in wet electrostatic precipitator systems (WESPs). In particular, the present invention is directed to using a conductive composite material in the fabrication of wet electrostatic precipitator system components.