METHOD FOR RADIAL FLUID FLOW PARTICLE FILLING OF RESPIRATOR CANISTERS

摘要

Methods are disclosed for filling a filter cartridgecanister. Flow through an exit plenum and a filterscreen of the canister is initially blocked, a sorbent inlet ofthe canister is open, and a ring of the canister is open. Flowis then initiated through the inlet and ring so sorbentparticles and fluid flow into the canister. A pressure differentialis provided between the inlet and the ring to enhancefilling. The exit plenum is opened to impart an even fluidflow across a sorbent stratum. Flow through the ring isstopped, and sorbent particles continue to be added via theinlet until the cavity is filled. The filter screen is then compressed,the sorbent inlet is sealed and the filter screen isfixed to a compressed position while flow is maintainedthrough the exit plenum.