Molecular sieve physical adsorption and desorption technology is adopted. The molecular sieve is filled in the oxygen generator, which can adsorb nitrogen in the air when pressurized, and the remaining unadsorbed oxygen is collected and purified into high-purity oxygen. When the molecular sieve depressurizes, it discharges the adsorbed nitrogen back to the ambient air, and can adsorb nitrogen and generate oxygen when it is pressurized next time. The whole process is a periodic dynamic cycle process and does not consume molecular sieve.
Classification of oxygen generators
Electronic oxygen generator: Electronic oxygen generator is more common in pharmacies. It uses the process of oxidation and reduction of oxygen in the air in solution, so it will not produce dangerous hydrogen like electrolysis of water to make oxygen.
Molecular sieve oxygen generator: Molecular sieve oxygen generator is an advanced gas separation technology. The physical method (PSA method) directly extracts oxygen from the air, and the maximum oxygen production pressure is 0.2 ~ 0.3 MPa (2 ~ 3 kg), so there is no danger of high pressure and explosion.
Oxygen-enriched membrane oxygen generator: This kind of oxygen generator adopts membrane oxygen production mode. Through membrane filtration of nitrogen molecules in the air, the oxygen concentration at the outlet reaches 30%, which has the advantages of small volume and low power consumption.
Refer to the above content: Baidu Encyclopedia-Oxygen Machine