First, understand the air pretreatment method of the oxygen generator:

Molecular sieve is the key core component of the oxygen generator. He is very squeamish and has very strict requirements on the air supplied to it to produce oxygen—clean and dry (dust, oil, and moisture). Otherwise, the molecular sieve will soon fail and be scrapped. Understand this principle, and you will know why you should carefully inquire and understand the molecular sieve oxygen generator for air pretreatment before purchasing. A good molecular sieve oxygen generator generally adopts four-stage air filtration + air cooling and drying treatment. The precision of the four-level filtering is in order: coarse filtering——fine filtering——precision filtering—— ultra-precision filtering. Air cold-drying treatment is a treatment method in which the air is cooled to remove the moisture in the air, so that the air can be dried. The oxygen generators with poor quality and cut corners generally have only the first two levels of air pretreatment, and they can reach the first three levels at most. There is absolutely no air cold-drying treatment.

Second, understand the power of the oxygen generator:

Since the molecular sieve oxygen generator needs to carry out sufficient air pretreatment ——four-stage air filtration + air cooling and drying treatment, it will inevitably consume a certain amount of power. Therefore, the power of a good and normal oxygen generator for oxygen production plus the power consumed by the air pretreatment will be relatively large, and under normal circumstances it will reach a power of 300 to 400 watts. If the power of the molecular sieve oxygen generator is less than 150 watts, do not buy this oxygen generator. It is definitely a cut corner oxygen generator with a short lifespan.

Third, understand the function of the oxygen generator:

Small portable or vehicle-mounted molecular sieve oxygen generators will boast that the flow rate is 1 to 5 liters and the concentration is adjustable between 90% and 30%. This function is 100% fake, and it is set in the computer control panel. OK. If his oxygen generator is equipped with sensors for flow and oxygen concentration, first, the price cannot be as cheap as a thousand yuan (it is understood that the high-precision oxygen concentration monitor is more expensive than the oxygen generator. ); Second, the digital display should fluctuate within a certain range instead of being fixed on an accurate number.

Fourth, understand the humidification bottle of oxygen generator:

Some molecular sieve oxygen generators are equipped with humidifying bottles, but some do not. How to distinguish this? It must be judged in conjunction with the "first point". The function of the humidification bottle is that the cold-dried air is still very dry after oxygen is produced, and it cannot be directly used for human breathing, otherwise the nostrils will be dry and bleeding. The dry oxygen must be wetted by the humidifying bottle to avoid the above phenomenon. If the molecular sieve oxygen generator is not equipped with a humidifying bottle, it will not be forged. If the molecular sieve oxygen generator is equipped with a humidifying bottle, judge according to the first point: 1. If the molecular sieve oxygen generator has a good air pretreatment configuration and meets the requirements in the first point, this is a good system Oxygen machine. 2. If the molecular sieve oxygen generator has no pre-treatment for air cooling and drying, and it is equipped with a humidification bottle, it is fake and redundant, which can only show that the fake is more realistic.

After mastering the above four points, you can choose a molecular sieve oxygen generator based on your own judgment.