Reply by crank49

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Posted on On a Dust Collector what about placing impeller before cyclone?

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4032 posts in 4219 days

#1 posted 06-29-2015 01:26 PM

Makes no difference in efficiency if the fan is before the cyclone or after the cyclone. BUT, as already pointed out, the cyclone before the fan gives the chunks a chance to drop out of the flow before they get to the fan.There are simpler ways to accomplish this, but the cyclone would be a way.

If you put the fan impeller on top of the cyclone with the shaft vertical, a popular arrangement, be absolutely sure the fan rotation is the same as the spin of the vortex inside the cyclone. Getting this backwards will kill the efficiency, reduce the flow, reduce the static pressure and everything.

The addition of a cyclone to a good filter is a total waste of time, energy, and money, but if thats what you want, go for it.

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