Dyson digital motors

The problem with conventional motors

Conventional A/C motors use big, fragile fans, copper windings and brushes that wear out easily, making them inefficient and unreliable. And as the carbon brushes wear down, they emit carbon particles, which is bad for the environment.

Dyson digital motors

Dyson digital motors use digital pulse technology, spinning at up to 104,000 times a minute (five times faster than a racing car engine). They are incredibly efficient too – due in part to high tolerances. For example, the impeller spins at over 600mph with only 0.3mm clearance between the blade tip and the impeller housing. And no carbon brushes means no carbon particle emissions.

• 1 1 Conventional 2D impeller
• 2 2 Bulky copper wirings in rotor
• 3 3 Friction contact Carbon brushes wear out and emit carbon dust
• 4 4 Low speed bearing
• 5 5 Armature

• 1 1 High-speed 3D impeller
• 2 2 Iron core rotor with no windings
• 3 3 No carbon brushes, no carbon particle emissions