Palayiwa E, Hahn C E, Sugg B R, Lindsay-Scott D, Tyrrell P J
Br J Anaesth. 1986 Sep;58(9):1041-7. doi: 10.1093/bja/58.9.1041.
This paper describes the use of solenoid valves for the production of binary gas mixtures. The system is controlled by a microprocessor and is capable of delivering accurate flows and concentrations of gases over the ranges commonly used in anaesthesia. Since the flow produced by the valves is pulsatile, a system for mixing the gases and smoothing the pulses is described. A back pressure regulator is fitted downstream of each of two mixing/damping chambers and a method of using this as a flow transducer is described. The advantages of this system over conventional rotameters are discussed.
本文描述了用于生产二元气体混合物的电磁阀的使用。该系统由微处理器控制，能够在麻醉常用的范围内输送精确的气体流量和浓度。由于阀门产生的流量是脉动的，本文还描述了一种用于混合气体和平滑脉动的系统。在两个混合/阻尼腔室的每一个下游都安装了一个背压调节器，并描述了一种将其用作流量传感器的方法。讨论了该系统相对于传统转子流量计的优点。
