Portable oxygen concentrator
AssigneeL'Air Liquide, Societe Anonyme a Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorsAnne Dubois, Pierre Bodelin, Xavier Vigor
Life of this patent
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Abstract
An oxygen concentrator portable by a patient, permitting producing a flow of gas containing 50% to 95% of oxygen from air, comprising air compression device, elements for gas separation by adsorption with pressure variations, and electrical energy storage unit keeping its charge for at least 30 minutes, the concentrator having a total weight less than 10 kg. Preferably, the gas separation elements are a PSA system using a zeolite X exchanged with lithium, as the adsorbent.
Claims17
Oxygen concentrator portable by a patient permitting producing a gas flow containing from 50% to 95% of oxygen from air, comprising:
- an air supply;
- air compression means having a weight (Mcomp), and being fluidly connected to the air supply;
- gas separation means for separating gas by adsorption with pressure variation, said gas separation means having a weight (Msieve);
- electrical energy accumulating means having a weight (Mbattery) and a charged life of at least 30 minutes;
- said concentrator having a total weight less than 10 kg;
- and
- the weight of the air compression means (Mcomp), the weight of the gas separation means (Msieve), and the weight of the electrical energy accumulating means (Mbattery) being such that:
- 0.5 < Mcomp Qp < 3 0.15 < Mbattery Qp < 2 0.05 < Msieve Qp < 1
- wherein Qp is a flow rate of oxygen produced by the concentrator (in l/min) and the weights Mcomp, Mbattery and Msieve are expressed in kg.
Oxygen concentrator portable by a patient permitting producing a gas flow containing 50% to 95% of oxygen from air, comprising:
- air compression means for compressing air to a pressure comprised between 1 and 5 bars, said air compression means having a weight (Mcomp);
- gas separation means for separating gas by adsorption with pressure variation, said gas separation means having a weight (Msieve) and comprising several adsorbers;
- each adsorber containing at least one adsorbent and operating according to pressure swing adsorption cycles, each cycle having a duration of less than 30 seconds;
- said at least one adsorbent being a zeolite exchanged with at least one metallic cation selected from the group consisting of lithium, calcium, zinc, copper and mixtures thereof;
- electrical energy accumulating means having a weight (Mbattery) and a charge life of at least 30 minutes;
- said oxygen concentrator having a total weight of less than 10 kg;
- and
- the weight of the air compression means (Mcomp), the weight of the gas separation means (Msieve) and the weight of the electrical energy accumulating means (Mbattery) being such that:
- 0.5 < Mcomp Qp < 3 0.15 < Mbattery Qp < 2 0.05 < Msieve Qp < 1
- wherein Qp is a flow rate of oxygen produced by the oxygen concentrator (in l/min) and the weights Mcomp, Mbattery and Msieve are expressed in kg;
- said air compression means, said gas separation means for separating gas by adsorption and said electrical energy accumulating means being disposed within at least one housing;
- and
- said housing comprising control means for controlling operation of the oxygen concentrator and at least one means for securing or carrying the oxygen concentrator.
Dependencies are inferred from the claim text.