There are many brands of home oxygen machines now. I have some suggestions for you to refer to. I heard that Shaanxi Kaier Home Care is very professional, mainly engaged in oxygen machines, and the brands are quite complete. You can go there and have a look. There is one 15 meters south of Cuihua Road History Museum, and the clerk's service attitude is good! The following points can be used for reference
1. The oxygen concentration of the oxygen generator must be greater than 9%, and it can only be detected by the oxygen monitoring device that comes with the instrument or machine.
2. An oxygen generator with unchangeable cumulative timing function should be selected to provide objective and accurate data for long-term maintenance and service in the future. Equipped with cumulative timer is a mandatory requirement of international standards, and it also reflects the quality of products. The service life of oxygen generator (oxygen machine) should be guaranteed for tens of thousands of hours.
3. Choose an oxygen generator (oxygen machine) with low noise, and the noise level should be less than 42 decibels, otherwise, it may affect the rest of myself and others, especially at night.
4. Choose an oxygen generator (oxygen machine) with enough compressor discharge (3.8-4.2m3/h), otherwise it will be easy to wear and tear after long-term operation, resulting in insufficient gas volume and attenuation of oxygen concentration. The leather wrist of the compressor is very important, and it is best to use imported parts.
5. The influence of molecular sieve on the machine performance is not as great as expected, mainly due to the adsorption performance and service life of molecular sieve, but the filling process of molecular sieve is very critical. The molecular sieve tower and tank are of integrated metal structure, and it is very important for the performance of molecular sieve to be filled with mechanical automatic early warning. However, the performance of oxygen generator (oxygen machine) with plastic end cover, rivet riveting and manual filling of molecular sieve is bound to be greatly affected.