| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an exhaust gas treatment device for electrically charging and agglomerating particulate matters in an exhaust gas using corona discharge in which the shape and the arrangement of a discharge electrode are optimized to efficiently treat the particulate matters without making a device structure complicated and without increasing the scale of the device structure, and thereby, the particulate matters are prevented from slipping through and the number of the particles is reduced. <P>SOLUTION: A cylindrical pipeline-like dust collecting electrode 4 connected to an engine exhaust pipe is disposed and the inside is used as an exhaust gas passage 11 through which the exhaust gas containing the particulate matters passes and an electric dust collecting part 1 generating the corona discharge between the discharge electrode 3 and the dust collecting electrode 4 arranged in the passage center of the exhaust gas passage 11. The discharge electrode 3 has a plurality of discharge bodies 32 formed by radially arranging a plurality of projected electrodes 33 at the outer periphery along the center axis of the exhaust passage 11. The projected electrodes 33 adjacent to each other in the peripheral direction and the axial direction of the exhaust gas passage 11 are arranged so that regions 52 regulated by electric force lines 51 emitted from the respective projected electrodes 33 and reaching the dust collecting electrode 4 are brought into contact with each other on the surface of the dust collecting electrode. <P>COPYRIGHT: (C)2013,JPO&INPIT |
