Method and device for avoiding the deposition of soot on the insulating components of an electrostatic filter

摘要

The invention relates to a method and device for avoiding the deposition of particles of soot ( 3 ) on the insulating components ( 2 ) in an electrostatic filter ( 1 ), which comprises the insulating components ( 2 ). The method comprises the method step of creating a repulsive electrostatic field ( 4 ) around said insulating components ( 2 ), by placing at least one repulsive electrode ( 8 ) in or on at least one of the insulating components ( 2 ) and applying an adequate voltage to the repulsive electrode ( 8 ). The voltage difference between the repulsive electrode ( 8 ) and the central electrode ( 6 ) and the voltage difference between the repulsive electrode ( 8 ) and the peripheral electrode ( 7 ) creates an electrical repulsive field ( 4 ), which repulses the particles of soot having an electrical charge. The formation of a conducting channel ( 5 ) on the surface of said insulating components ( 2 ) between the central electrode ( 6 ) and the peripheral electrode ( 7 ) can thus be avoided.