Airborne Molecular Sieve Oxygen System

Abstract

The invention discloses an airborne molecular sieve oxygen system. The airborne molecular sieve oxygen system comprises an air source assembly, an oxygen concentrator and an oxygen supply assembly; the air source assembly comprises a scroll compressor, a heat dissipation fan and a filter, the oxygen concentrator comprises a control unit, a molecular sieve bed I, a molecular sieve bed II and an air storage tank, and the oxygen supply assembly comprises an oxygen supply mask, an oxygen supply pipeline, and an oxygen supply adjustor with an anti-asphyxia valve structure and an automatic oxygen flow adjusting structure; the molecular sieve bed I and the molecular sieve bed II are provided with a program control device I and a program control device II respectively, the air path output end of the air storage tank is connected with the oxygen supply adjustor through the oxygen supply pipeline, the oxygen supply mask is arranged at the air path output end of the oxygen supply adjustor, and the scroll compressor, the program control device I and the program control device II are electrically connected with the control unit. The airborne molecular sieve oxygen system has the functions of automatically adjusting oxygen flow and preventing asphyxia, modular design is adopted in the whole structure, and the modular system is convenient to replace and maintain.

Description

technical field [0001] The invention relates to the technical field of flight, in particular to an airborne molecular sieve oxygen system. Background technique [0002] The airborne molecular sieve oxygen system is an oxygen generation system mainly developed for the special oxygen consumption mode of helicopters. Molecular sieve oxygen generation system uses the principle of pressure swing adsorption (PSA / VPSA), the selective adsorption characteristics of molecular sieve to oxygen and nitrogen, and separates nitrogen and oxygen from the passing air to produce oxygen to meet the physiological oxygen needs of airborne personnel. [0003] With the increase of the operating altitude of the aircraft, the oxygen content in the air continues to decrease, and the thin oxygen cannot meet the oxygen demand of the airborne crew members. The existing molecular sieve oxygen generators in the market also use the principle of molecular sieve pressure swing adsorption oxygen production, bu...

AI Technical Summary

Problems solved by technology

[0003] With the increase of the operating altitude of the aircraft, the oxygen content in the air continues to decrease, and the thin oxygen cannot meet the oxygen demand of the airborne crew members. The existing molecular sieve oxygen generators in the market also use the principle of molecular sieve pressure swing adsorption oxygen production, but now The oxygen production capacity and output oxygen pressure of the oxygen generator cannot meet the high-altitude oxygen demand

[0004] The overall structural design, strength, volume, sealing, and materials of the existing oxygen generator cannot meet the environmental requirements of military helicopters, and cannot meet the requirements of the national military standard for airborne products such as high and low temperature, resistance to temperature shock, damp heat, mold, salt spray, Acceleration, vibration, shock, temperature-humidity-altitude, product electromagnetic compatibility, life, reliability, maintainability, testability, guarantee, safety and other requirements

[0005] Existing oxygen concentrators do not have the self-adjustment function of oxygen flow at altitude, and cannot adjust the oxygen flow independently with the operating altitude of the aircraft. During the operation of the aircraft, the flight altitude is constantly changing, and the oxygen content in the atmosphere at different altitudes is different. Oxygen requirements are also different. A constant oxygen flow rate will cause: when the flight altitude is relatively low, such as the flight altitude <2000m, the oxygen content in the atmosphere is similar to that on the ground. At this time, the airborne personnel do not need excess oxygen , the normal demand can be met only by the amount of oxygen in the atmosphere, and the oxygen generator does not need to operate. At this time, the operation of the oxygen generator will cause a waste of airborne energy

[0006] Continuous and constant oxygen flow rate If the output oxygen flow rate is set too high, the airborne personnel cannot fully inhale, and the incompletely absorbed oxygen will be sprayed to the face or nasal cavity of the airborne personnel through the mask, causing airflow interference and causing the airborne personnel to inhale. The passengers are uncomfortable; with the increase of the operating altitude of the aircraft, when the altitude reaches 7000m, the oxygen content in the atmosphere is low, and the onboard personnel need to absorb the oxygen output by the oxygen generator. If the set output oxygen flow is not enough , can cause breathing difficulties and cause accidents

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