Patent ID: 8794237
Filing Date: 2014-08-05
Classification: A61M,B01D,G01N

Abstract:
1. An oxygen concentrator apparatus, comprising: at least a first canister and a second canister; separation material disposed in at least the first canister and the second canister, wherein the separation material separates at least some nitrogen from air in the canister to produce oxygen enriched gas; a compression system coupled to an inlet of the first and second canister, wherein the compression system compresses air during operation; a first conduit coupling an outlet of the first canister to an outlet of the second canister, the first conduit comprising a first flow restrictor and a first valve disposed in the first conduit, the first flow restrictor having a fixed interior passage diameter that reduces the diameter of the first conduit, wherein the first flow restrictor is positioned between the first valve and the first canister; and a second conduit coupling the first canister to the second canister, the second conduit comprising a second flow restrictor and a second valve disposed in the second conduit, the second flow restrictor having a fixed interior passage diameter that reduces the diameter of the second conduit, and wherein the second flow restrictor is positioned between the second canister and the second valve.