气囊式正压氧气呼吸器呼吸阻力影响分析

摘要

This paper analyzed the breathing resistance produced by the positive-pressure spring of the airbag-type positive-pressure oxygen respirator, the breathing resistance produced by the respirator's tube structure and the influence factors of the breathing resistance of the whole respirator. The results showed that the breathing resistance of the respirator was determined by the spring force and the structural resistance of the breathing tube after the influence of the exhaust valve and automatic supply valve was excluded;and the greater the breathing flow, the larger breathing resistance after the design of the respirator's structure was finalized.%　　分析了气囊式正压氧气呼吸器正压弹簧产生的呼吸阻力、呼吸器管道结构产生的呼吸阻力和整机呼吸阻力的影响因素，结果表明：在排除了排气阀和自动补给阀影响后，呼吸器的呼吸阻力由弹簧力和管道结构阻力决定；呼吸器结构定型以后，呼吸流量越大，呼吸阻力越大。