Electrical dust filter manufacturing method and electrical dust filter manufactured thereby

A method for manufacturing an electrical dust filter, comprising:

• preparing a frame having a board member with a plurality of assembling holes, a collecting electrode having a plurality of hooking protrusions protruded on a circumference adjacent to an end part and arranged along a periphery, a discharging electrode to generate an electrical discharge and arranged along an axle line direction, and a discharging frame to couple the discharging electrode to the frame in an insulating state;
• assembling the collecting electrode to the assembling holes of the frame;
• coupling the discharging electrode to the frame with an insulating member after the collecting electrode is inserted into the assembling hole;
• and
• arranging the discharging electrode on the frame in the axle line direction within the collecting electrode wherein the discharging frame is insulated from the frame,
• wherein the step of assembling comprising,
• inserting the collecting electrode into the assembling holes of the frame by deforming the collecting electrode with elasticity in a radial direction;
• and
• forming a boundary part by pressing the end part of the collecting electrode on a surface of the board member where the end part is protruded out of the board member on being inserted into the assembling holes in the axle line direction,
• wherein the step of the preparing comprising,
• cutting a wire W with a length corresponding to that of the discharging electrode;
• forming a connecting means at both ends of the wire W;
• and
• forming a tensile spring at either end of the wire W adjacent to the connecting means in the axle line direction.