An oxygen generator is a type of machine that produces oxygen, and its principle is to use air separation technology. Firstly, the air is compressed at a high density and then the different condensation points of each component in the air are used to separate the gas and liquid at a certain temperature, and then rectify it to separate it into oxygen and nitrogen. In general, people are used to calling it an oxygen concentrator because it is mostly used to produce oxygen. Because oxygen and nitrogen are widely used, oxygen generators are also widely used in the national economy. Especially in medical, metallurgy, chemical industry, petroleum, national defense and other industries are most used.

There are a variety of oxygen generators on the market. Due to the different principles of oxygen generation, the use characteristics of each oxygen generator are also different. The oxygen principle of the household oxygen production mechanism includes: 1. The principle of molecular sieve; 2. The principle of polymer oxygen-enriched membrane; 3. The principle of electrolysis of water; 4. The principle of chemical reaction oxygen production. The molecular sieve oxygen generator is the only mature oxygen generator with international and national standards.