| 摘要 |
PROBLEM TO BE SOLVED: To provide a honeycomb filter causing frequent changes of pressure loss depending on an amount of accumulation of collected matter.SOLUTION: A honeycomb filter 100 has conduits 110 extending parallel to each other and has end surfaces 100a, 100b. The conduits 110 comprise: conduits 110a, the end surface 100b-side ends of which are sealed; and conduits 110b, the end surface 100a-side ends of which are sealed. The sum of the areas of openings of the conduits 110a at the end surface 100a, is greater than the sum of the areas of openings of the conduits 110b at the end surface 100b, and the hydraulic diameter of the conduits 110a is 1.4 mm or less. |
