To make fans work quietly,
manufacturers use slow-running
motors to spin the blades. This
reduces noise but also reduces
power, producing weak airflow. To make powerful fans, they
use fast motors to spin the blades.
But fast motors create more noise.
Powerful and quiet is very difficult
to achieve in a conventional fan. The new Dyson Cool™ fans have been
engineered to be quieter, use less energy
– yet generate powerful airflow.