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Priority to SU3976533/23ApriorityCriticalpatent/SU1425917A1/en
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Respiratory Apparatuses And Protective Means
(AREA)
Abstract
FIELD: aeronautical engineering. SUBSTANCE: each cycle consists of sorption of nitrogen from air in one adsorber (1 or 2) and regeneration of other adsorber. Control units 16 and 17 are connected with sensors 14 and 15 indicating the absolute pressure of mixture being enriched in adsorbers and with drives of valves. Control units 20 and 21 are connected with sensors 18 and 19 indicating the excessive pressure of gas (relative to atmospheric pressure) exhausted into atmosphere at regeneration of adsorbent and with drive of valves. Prior to completion of sorption of nitrogen, adsorbent being regenerated is blown by part of enriched mixture in each cycle. At flight manoeuvre of flying vehicle, limiting magnitudes of maximum absolute pressure of mixture being enriched and minimum excessive pressure of gas being discharged are maintained constant; as a result, degree of enrichment of mixture is increased at increased flight altitude. EFFECT: improved life support conditions due to change of degree of enrichment of breathing mixture depending on change in flight altitude. 2 dwg
SU3976533/23A1985-11-151985-11-15Method of enrichment of breathing mixture for crew member of flying vehicle
SU1425917A1
(en)
Molecular sieve generation of aviator's oxygen: Breathing gas composition as a function of flow, inlet pressure, and cabin altitude[Interim Report, 1 Oct. 1976- 30 Sep. 1977]