What is the working principle of an oxygen concentrator?

Our portable oxygen concentrator uses Molecular Sieve Technology.

 Working principle of Molecular Sieve Technology:

1.      Air intake and compression:

The oxygen concentrator draws ambient air into the device through a compressor. The air is first filtered (to remove dust, particulate matter, and other impurities) before entering the pressurization system. After being pressurized, the air enters the adsorption tank filled with Zeolite Molecular Sieve.

2.      Molecular sieve adsorption separation of gases:

The molecular sieve is a porous crystalline material with nanoscale micropores. Its pore size (about 0.3–1 nanometers) allows selective adsorption of gas molecules:

• Nitrogen (N₂) molecules, with a diameter of about 0.364 nanometers, are adsorbed and temporarily retained by the molecular sieve’s micropores.
• Oxygen (O₂) molecules, with a diameter of about 0.299 nanometers and smaller in size, can pass through the pores and remain unabsorbed.

3.      Oxygen collection and enrichment:

The unabsorbed oxygen, with a purity of about 90%–95%, is collected and delivered to the output port for users to inhale.

From the working process of an oxygen concentrator, we can see it is a physical separation process and there are no chemical reactions occur during this process, so there are no harmful effects on the human body.

All our oxygen concentrators are based on Molecular Sieve Technology. You can choose a suitable model that fits your needs.