| 摘要 |
PURPOSE:To improve the dust collection efficiency and to reduce the consumption of electric power by using a discharge electrode having a uniform cross section in an electrified part, and impressing a DC high voltage and a pulse high voltage one upon another to said discharge electrode in a two-stage electrical dust collector. CONSTITUTION:An electrified part 6 consists of a discharge electrode, which is constituted of round or angular wire and has a uniform cross section, and a collecting electrode capable of constituting a uniform electric field, and a DC high voltage is impressed between both electrodes by DC high voltage generators 3c and 3f. A pulse high voltage is further impressed and superposed from pulse voltage generators 8a and 8b through coupling capacitors 9a and 9b. High- resistance dust can be highly charged in this way. Then the charged dust is collected at a dust collecting section 7. Since the pulse electric source is utilized only in the electrified part, the collector can be economized. |
