Abstract: Three cycles for small-scale oxygen generation were compared through experiments，in which the cycle with purging through one nozzle with low oxygen flux is proved to be the best. Such a cycle can produce oxygen at lower adsorption pressure. It was found that the one-way valve can reduce adsorption pressure and the small oxygen flux can enhance oxygen concentration in product. The cycle with double nozzles can also increase the oxygen concentration in product，while it can hold higher adsorption pressure because of the narrow nozzle orifice. Both purging with large flux and equalization times have maximum values for the one nozzle purging cycle.

摘要： 通过对微型制氧流程的实验研究和分析，确定了单节流小流量反吹和均压工艺的最佳实验参数，在保证产氧浓度和氧气最大回收率的条件下，该工艺流程吸附压力最低。结果表明：小流量反吹工艺可以提高产品气中氧气浓度（体积分数），吸附塔出口端单向阀可以有效降低吸附压力；双节流反吹工艺虽然可以提高产品气中氧气浓度，但节流孔径限制了产品氧气输出，导致吸附压力升高；单节流小流量反吹工艺和均压工艺中均压时间与瞬洗时间均存在最佳值。