脉冲式供氧装备供氧防护性能评价与分析

运用环境模拟方法,了解和掌握新型供氧装备的防护性能。通过低压舱模拟不同的高空环境,机械肺模拟人体呼吸。其间利用脉冲式供氧装备对机械肺进行供氧。实验过程中,采集面罩氧分压、面罩氧浓度等数据,并对数据进行分析。实验结果表明, 脉冲式供氧装备在供氧过程中,受高度和通气量影响比较大。供氧装备适应高度自动调整供氧量性能不佳。供氧装备操作繁琐,应在满足人体呼吸需求的基础上,予以简化。

Evaluation and Analysis the Protective Performance of Pulse Oxygen Delivery System

For making certain the protective performance of the pulse oxygen delivery system, the experiment utilizes that hypoxia chamber simulates different altitudes, and mechanical lung simulates human breathing. In every altitude, the data of PO₂ and oxygen concentration in the mask, are collected and analyzed. The results show that supplying oxygen performance of this equipment is influenced by altitude and ventilatory capacity (VC). The pulse oxygen delivery system adjusts oxygen supply ration adequately, on the basis of altitude change. Because of the complex operations, the pulse oxygen delivery system must be simplified on basis of human physiological demand.