| 摘要 |
PURPOSE:To obtain a small-sized and lightweight electrical dust collector with high collection efficiency and no danger of spark discharge by covering one electrode between an electric field forming electrode and a dust collecting electrode for collecting charged particles of dust which is used as a cathode with an insulating material. CONSTITUTION:The minus terminal of the first power source 40 and a discharge electrode 11 and the plus terminal and a dust collecting electrode 31 are connected respectively with a lead wire, and from several to over then KV voltage is impressed. Accordingly, corona discharge is formed in a space in the vicinity of the discharge electrode 11, and the ions having minus polarity are negatively charged while being attracted by the collecting electrode 31. Meanwhile, the minus terminal of the second high-voltage power source 50 and an electric field forming electrode 21 and the plus terminal and the dust collecting electrode 31 are connected respectively with a lead wire, and the voltage is similarly impressed to form a DC electric field vertical to the flow of charged dust particles. The emission of electrons causing spark discharge can be prevented by covering the electric field forming electrode 21 with an insulating material.
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