The VPSA Oxygen Generator ndi pressurized adsorption ndi vacuum m'zigawo mpweya jenereta. Mpweya umalowa m'bedi la adsorption pambuyo pa kuponderezedwa. A wapadera maselo sieve kusankha adsorbs asafe, mpweya woipa ndi madzi kuchokera mlengalenga. Sieve ya ma molekyulu imachotsedwa pansi pavuvu, ndikubwezeretsanso mpweya wabwino kwambiri (90-93%). VPSA ali otsika mphamvu mowa, amene amachepetsa ndi kukula zomera kukula.
Majenereta okosijeni a Shanghai LifenGas VPSA akupezeka mumitundu yambiri. Jenereta imodzi imatha kutulutsa mpweya wa 100-10,000 Nm³/h ndi chiyero cha 80-93%. Shanghai LifenGas ali ndi chidziwitso chochuluka pakupanga ndi kupanga mizati yotsatsira ma radial adsorption, ndikupereka maziko olimba a zomera zazikulu.