| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an exhaust treatment apparatus for collecting particulate matter in an exhaust gas of an internal combustion engine in a dust collector using corona discharge, in which deterioration in an insulation function of an insulator part of a discharge electrode due to sticking of particulate matter or moisture to the insulator part is prevented. <P>SOLUTION: In the dust collector 1, a high voltage electrode 2 for discharge and an earth electrode 3 are arranged to be opposed to each other in a housing H connected to an exhaust pipe of the engine and the corona discharge is generated in a discharge space 12 to charge and aggregate the particulate matter. The high voltage electrode 2 is fixed to a swelled part H1 wall provided in the housing H and an outlet flow path 42 is formed by a gap between an opening part 41 of a cyclone chamber 4 formed in the swelled part H1 and an upstream side surface of the insulator part 21. Swirl flow generated in the cyclone chamber 4 is spouted from the outlet flow path 42 along the upstream side surface of the insulator part 21 to suppress the sticking of the particulate matter or the moisture itself. <P>COPYRIGHT: (C)2012,JPO&INPIT |
