Mechanical electrostatic filter assembly

An improved mechanical electrostatic filter assembly for filtering an air stream from particulates, comprising multiple cartridges positioned in a consecutive manner, close together, each of said multiple cartridges comprising inner filtering media, each of said multiple cartridges having a back wall and a front wall, each one of said back wall and each one of said front wall having multiple openings through which said air stream is passing,

• wherein as said air stream with particulates approaching the improved mechanical electrostatic filter assembly, and hitting an outer surface of said front wall of a first cartridge, friction is established and the particulates get electrostatically charged,
• wherein the air stream with said electrostatically charged particulates passing through said multiple openings of said front wall and the electrostatically charged particulates are electrically coupled to said inner filtering media, the air stream exiting said first cartridge passing through at least one additional cartridge for filtering the particulates remained in said air stream,
• wherein said multiple cartridges are positioned in a consecutive manner separated from one another via an air gap, said air gap having a predefined width for building up/increasing electrostatic charge in the air molecules and in the particulates in the air stream flowing through said air gap prior to reaching the consecutive cartridge, said increased electrostatic charge in the air molecules and in the particulates improves the filtering of said air stream from particulates.