Patent ID: 6241810
Filing Date: 2001-06-05
Classification: B03C,Y02A,Y10S

Abstract:
In an electrostatic filter device for separating particles which comprises an upstream particle charging unit having at least one corona electrode for charging particles, and a particle collecting unit arranged downstream relative to said particle charging unit, the improvement wherein the particle collecting unit comprises two groups of parallel hollow cylindrical elements concentric to each other and alternatively arranged at a predetermined distance from each other, a first group of elements being connected to earth, and a second group of elements being electrically insulated with respect to the device and the first group of elements; and the composite constituent materials of said cylindrical elements being homogeneous and consisting essentially of one or more non-hygroscopic polymer materials with a mass resistivity within the range of 1.times.10.sup.2 .OMEGA.cm to 1.times.10.sup.8 .OMEGA.cm.