Patent ID: 8608827
Filing Date: 2013-12-17
Classification: A61M,B01D

Abstract:
1. A portable oxygen generator, comprising: a first compressor, arranged to provide a flow of pressurized air; a first molecular sieve, that receives the flow of pressurized air and produces a flow of oxygen enriched gas; a second molecular sieve, that receives the flow of pressurized air and produces a flow of oxygen enriched gas; a control valve that controls the flow of pressurized air such that it is selectively provided to the first and second molecular sieves; a product container, that receives the flow of oxygen enriched gas; an outlet valve, arranged to regulate an output flow of oxygen enriched gas to a user; a purge line, in fluid communication with the first and second molecular sieves and that includes a controllable purge line valve that controls a flow of purge gas between the first and second molecular sieves during a purge cycle, wherein the controllable purge line valve is operable to select between at least two purge orifices having different diameters to control the amount of flow of the purge gas during the purge cycle; a coupler, constructed and arranged to accept a gas line connection from a second compressor that is external to the portable oxygen generator and has a larger capacity than the first compressor; and a sensor that senses if the coupler is connected to the gas line connection and generates a signal such that, if the gas line connection is coupled to the coupler, the molecular sieves receive the flow of pressurized air from the second compressor and the first compressor is turned off.