In article ,
"BigWallop" writes:

The cyclone action only moves air in a circular motion inside a chamber.
The dust and other small particles are actually caught by the replaceable
filter traps in the path of the air flow. The cyclone does not drop its
dirt payload on its way round the vacuum cleaner. The dirt falls off the
filter when it reaches a weight heavy enough to allow it to fall off, or you
take the filter out and clean it before it reaches that stage.

snip

You are describing a (non-cylone) canister vacuum cleaner (such as
a Henry or a Vax in the UK), or something that might have been
marketed to make you think it was a cyclone, but doesn't actually
use cyclonic separation (of which there are a number of non-Dyson
products made to look a bit like Dysons).

It's not rocket science.

No it's not, but you might want to go and read up on cyclonic
separation, so you understand the difference between that and what
you posted.

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]