The development of the Dyson digital motor V4 - one of the world's smallest 1400W motors, has enabled Dyson engineers to build a hand dryer that protrudes just four inches from the wall. It dries hands hygienically in 12 seconds.
The Dyson digital motor V4 was seven years in the making. It's the only hand dryer motor powerful enough to draw in 28 liters of air a second through a HEPA filter, and then dry hands in 12 seconds. This long-life, energy-efficient motor is digitally switched at 6,100 times per second, making the high compression fan spin 92,000 times a minute. There are only three moving parts, so there are no slip rings or carbon brushes to wear down.