REFRESHING DEVICE OF MICROWAVE FILTER FOR INTERNAL COMBUSTION ENGINE

摘要

PROBLEM TO BE SOLVED: To safely, surely refresh a filter for collecting particulates contained in exhaust gas of an internal combustion engine with a microwave electric power. SOLUTION: Plural metal link-shaped flat plates 11, 11, etc., are vertically arranged in the inner wall of a filter housing 4 in the length direction and in plural lines in the circumference direction, and the height h of the link-shaped flat plate 11 is made in almostλ/4 to the wave lengthλof a supply microwave, installation intervals s in the length direction is set inλ/12-λ/4, the installation intervals w in the circumferential direction of the same plane of the link-shaped flat plate 11 is set inλ/2 or more, and a cylindrical outer cover 12 is installed in the outer surrounding of the cylindrical filter housing 4, in which plural link-shaped flat plates 11 are installed.