Patent ID: 7264647
Filing Date: 2007-09-04
Classification: B01D,B64D

Abstract:
1. A device for enriching air with oxygen in an aircraft, the device comprising in series sequence: a high-pressure source for dispensing air; a water separator; two parallel arranged molecular sieve beds for the alternate adsorption and desorption of nitrogen; a flow transfer means for permitting a rinsing gas flow between the molecular sieve beds; an oxygen measurement apparatus analyzing the product gas flow enriched with oxygen; a throughput sensor for detecting the product gas flow; and a change-over device for the product gas flow exiting from the molecular sieve bed, wherein in a first switch position of the change-over device a flow connection to an outlet channel is created for removing product gas flow with an insufficient oxygen output, and in a second switch position there exists a flow connection to a consumer conduit, and wherein there are provided means for producing a change-over signal from the first to the second switch position upon exceeding a predefined threshold value for the oxygen output, said oxygen output being a product of the oxygen concentration and the product gas flow.