Aerodynamic Noise Control Technology
Major source of air purifier noise is the fan. Apart from motor and bearing noise, most of the fan noise comes from the eddy swirls following the trailing edge of the blade after it passes by. The eddy swirls are not the same each time a blade passes by. Especially, when the internal winds in different velocities collide with each other it makes turbulences. The wind turbulences augment noise so much.
TROMBE’s aerodynamic noise control technology (ANCT) eliminates internal wind turbulences. Consequently ANCT greatly reduce noise, and even generates white noise which helps you relax and fall asleep fast.