Electric dust-collection unit and air cleaning apparatus using the same

摘要

The disclosed invention is an electric dust-collection unit including needle electrodes (27) for the purpose of charging particulates (23) within the air by causing corona discharges around their tips (291), collector cells (40) arranged in tubular shape corresponding to the needle electrodes (27) for the purpose of attracting and collecting the charged particulates (23) by means of static electricity, and deflecting electrodes (28) which are arranged in such a way as to be inserted within the collector cells 40 for the purpose of imparting a deflecting force on the charged particles in the direction of the collector cells (40), the deflecting electrodes (28) being configured in the form of a hollow column including a forward plate section (301, 311) having a mounting hole (ha, hb) for the purpose of fitting and retaining the needle electrode (27), and side plate sections (302, 303, 312, 313) facing the collector cell at a prescribed distance, while the needle electrodes (27) are fixed on to the forward plate sections (301, 311) of the deflecting electrodes 40 in such a way that their tips (27) protrude from the surface of the forward plate sections (301, 311), while their bodies (292) are inserted firmly in the mounting hole (ha, hb).