초록 ▼

An absorption-type oxygen generating system is disclosed in which the nitrogen components of compressed air passing through an absorption bed is absorbed, leaving a relatively pure oxygen effluent. Regeneration of the bed is provided by depressurizing the bed and recirculating a portion of the oxyge

An absorption-type oxygen generating system is disclosed in which the nitrogen components of compressed air passing through an absorption bed is absorbed, leaving a relatively pure oxygen effluent. Regeneration of the bed is provided by depressurizing the bed and recirculating a portion of the oxygen effluent to release the nitrogen previously absorbed therein. A flow divider has two branches each providing fixed orifice therein. One branch delivers a fixed percentage of the effluent to a depressurized absorption bed for regeneration thereof. The other branch delivers the remaining effluent to a storage tank. A pressure regulating valve is provided in the second branch to maintain a constant pressure differential across the orifice of the second branch so that a constant percentage of the oxygen effluent is delivered to the storage tank regardless of the back pressure existing in such tank. A two-stage, double-acting compressor powered by a hydraulic actuator is operable to compress the oxygen from the storage tank for filling conventional high pressure oxygen tanks.

대표청구항 ▼

A fluid absorption system comprising regenerative beds operable to cyclically produce effluent in pressure surges, and a flow divider operable to recirculate a substantially constant first percentage of said effluent for regenerating said beds and to deliver a substantially constant second percentag

A fluid absorption system comprising regenerative beds operable to cyclically produce effluent in pressure surges, and a flow divider operable to recirculate a substantially constant first percentage of said effluent for regenerating said beds and to deliver a substantially constant second percentage as product against a variable back pressure, said flow divider including first and second branches having flow restrictors therein said first branch operating to deliver said first percentage of effluent for regeneration of said beds said second branch including an automatically compensating pressure regulating valve operable to maintain a pressure differential across the flow restrictors in said second branch which is substantially independent of said back pressure so that said second percentage of product delivered remains substantially constant as said back pressure varies.