Gas filtration structure with asymmetrical hexagonal channels

A gas filter structure for filtering at least one particulate-laden gas, of a honeycomb pattern and comprising an assembly of longitudinal adjacent channels of mutually parallel axes separated by porous filtering walls, said channels being alternately blocked off at one or the other end of the gas filter structure so as to define inlet channels and outlet channels for the gas to be filtered and so as to force said at least one particulate-laden gas to pass through the porous walls separating the inlet and outlet channels, wherein in said gas filter structure:

• i. each outlet channel has a common wall common to six inlet walls, each common wall being one side of said outlet channel;
• ii. each outlet channel comprises six sides of approximately identical width a, so as to form a channel of approximately hexagonal and regular cross section;
• iii. at least two adjacent sides of each inlet channel have a different width;
• iv. at least two inlet channels sharing a wall with one same outlet channel share between them a second common wall of width b;
• and
• v. the ratio of widths b/a is greater than 1 but less than 13.