Beeing a ""frosted"" northern Québecois, I never went out to empty the ash pan.
I installed the old kitchen stove's fan (a 2 squirel cages one) vertically at the back of the ash can, placed a air Handler filter 5" x 20" in front of the fan. I try to dump the ash as fast as possible but without disturbing it too much, then put the lid back as fast as possible. The dust is collected in the filter.
I have 3 dust cans so I just fill them about +/- 1/2 full.
Next step could be a lid like yours.
Will you get the lid motorized
one of these days when alone in your house?