When making oxygen in the home space, it depends on the size of the room. 10 m2 10L, and 20 m2/20L or so. After calculation, the oxygen concentration of oxygen is about 25% (the oxygen concentration of air is 2 1% at normal temperature and pressure). If it is oxygen therapy, you can now use a micro-pressure oxygen chamber with oxygen to provide 95% pure oxygen at 1.3 atmospheric pressure. Pressurization can increase the oxygen partial pressure of blood and make oxygen fully dissolved in blood. If you inhale with an oxygen-absorbing earphone, the concentration in the inhalation body is probably above 50%. It can be said that it is a civilian version of the hospital hyperbaric oxygen chamber, which is very small and covers an area of about 2 square meters. Generally used for home oxygen therapy. Compared with the space oxygen generator, the advantage is that the oxygen therapy effect is better, but it may be more troublesome than the domestic space oxygen generator. The oxygen therapy scheme provided by the oxygen source is formulated according to the actual situation. The role of oxygen therapy can prevent and treat some diseases caused by chronic hypoxia, health care, beauty, postoperative and sports rehabilitation.