Gas separation – With nonliquid cleaning means for separating media – Cohesive filter media cleaning
Patent
1984-12-12
1987-01-20
Spitzer, Robert
Gas separation
With nonliquid cleaning means for separating media
Cohesive filter media cleaning
55497, 55510, 55521, B01D 4604
Patent
active
046378251
ABSTRACT:
A porous media air filter unit for a power sweeper includes an impingement or barrier type filter element mounted on a combination support plate and clean air discharge plenum which redirects the filtered air flow at right angles relative to the central axis of the filter element. Multiple reverse jet backflushing air discharge manifolds are mounted generally alongside the filter element and at the outlet of the clean air discharge plenum for directing plural jets of reverse flow filter cleaning air into the plenum for periodically cleaning the filter element. Reverse jet cleaning air is supplied to a supply manifold by a compressor onboard the power sweeper. The supply manifold forms a wall of a housing forming a clean air chamber and supports an array of reverse jet air discharge manifolds and pilot operated control valves. The clean air plenum may be provided with interior partitions to separate the plenum into a plurality of separate flow passages for conducting clean filtered air in one direction and reverse jet cleaning air in the other direction to maximize cleaning air energy for dislodging particulate material from the filter element. The filter element includes removable divider plates for dividing the element clean air chamber into plural chamber segments.
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