OXYGEN PARTIAL PRESSURE CONTROLLER FOR A PRESSURE SWING ADSORPTION SYSTEM

摘要

An oxygen partial pressure controller regulates the oxygen partial pressure (PPO2) of the product gas of a pressure swing adsorption oxygen enriching system by means of a bleed valve which increases gas flow through the adsorptive system thereby decreasing the PPO2 of the product gas. The controller includes a solenoid valve which permits the bleed valve to function when the adsorption system pressure and PPO2 is high. An aneroid controls the product gas flow as a function of altitude when the bleed valve is permitted to function.