The working principle of the oxygen generator can be divided into four categories according to the oxygen generator's different oxygen generating principles, mainly: molecular sieve principle, polymer oxygen-rich membrane principle, electrolysis principle, chemical reaction oxygen generating principle and so on.
Early oxygen production principle is chemical oxygen, that is, the use of chemical reagents to produce oxygen, because the method can not be a long time continuous supply of oxygen, and chemical reagents are expensive, high cost of oxygen, and was eliminated from the market. Molecular sieve oxygen concentrator is to air as raw material, only consume electricity, raw material is air, no need to spend, easy to take, use, not only relative to other principles of oxygen concentrator has the advantage, and liquid oxygen canisters, cylinders of oxygen compared to the other, also has the advantage of easy to use, not subject to the market price of oxygen, the cost of transportation and other factors affect the benefits of oxygen.
Molecular sieve oxygen concentrator is the only mature oxygen concentrator with both international and national standards. Therefore, it is recommended to purchase an oxygen concentrator based on the molecular sieve principle, especially for therapeutic use.
The molecular sieve oxygen concentrator works mainly by utilizing the PSA (Molecular Sieve Physical Adsorption and Desorption) technology.
Air is filtered through the inlet filtration device and enters the compressor, which is compressed and enters the molecular sieve tower for the separation of oxygen and nitrogen. Oxygen passes smoothly through the molecular sieve tower into the fine sieve tower, while nitrogen is adsorbed by the molecules and discharged to the atmosphere through the separation valve. Oxygen in the fine sieve tower to further increase the concentration of the flow control valve to control the flow size, and then through the humidification tank for wetting, and finally flow through the oxygen delivery pipe for users to supplement the oxygen.