| abstract |
A pressure swing adsorption device (12A, 12B) that generates an oxygen-enriched gas flow and a battery (148) that supplies power to the pressure swing adsorption device are provided in the portable oxygen concentration device (10). The oxygen concentrator has a total weight of less than about 4.5 kg (10 lbs), a maximum flow rate equivalent to 100% oxygen gas of about 0.9 liters / min, a total volume of less than about 13110 cm 3 (800 in 3 ) and at least It has a battery life of about 8 hours. In addition, the present invention uses a liquefaction device or a transfer filling device combined with the oxygen concentrator. [Selection] Figure 23 |