| 摘要 |
PURPOSE:To realize high collection efficiency and low pressure loss, in a honeycomb shaped filter, by allowing a thick wall part and a thin wall part to be present in one unit consisting of an inlet side passage, an outlet side passage and the partition wall between both passages. CONSTITUTION:A ceramic filter comprises porous ceramic having a three-dimensional reticulated skeleton and has inlet side passages 13 and outlet side passages 15 partitioned by partition walls 12 and passages opened at both ends are partially closed and exhaust gas is flowed out to adjacent passages through spaces of three-dimensional reticulated skeleton. In this case, by constituting each partition wall such that the thickness thereof is not made constant so as to make the center part thereof thick while the circumferential part thereof thin, the diffusion property of gas in partition walls is made satisfactory and parts utilized in collection are increased. |
