Traditional fans do not use .
By using an airfoil design, Dyson's Air Multiplier fan is capable of operating without blades. An airfoil-shaped ramp, similar to what's employed in airplane wing engineering, directs air out of the fan's motor base at a continuous rate that avoids the "chopped air" effect produced by traditional blade-based fans. Engineered over four years, this is the world's first blade-less fan available to consumers.
Airfoil Design
A 16-degree airfoil ramp is used to route air out of the fan at a rate of 118 gallons per second. Air is passed over the airfoil ramp from behind the fan and then channeled out through to the other end of the ramped surface by way of a small motor mounted in the fan's base.
Air Induction
Air induction begins at the base of the fan, where air is channeled into the fan's motor base through small holes. A motor based off of jet engines and turbochargers helps generate the initial airflow, which is passed through to the air expulsion mechanism that uses airfoil technology.
Air Expulsion
The initial airflow generated from the fan's base is passed over the airfoil ramp at an accelerated rate to begin induction of additional air from behind the fan, which generates the total volume of air being blown toward the user. The airfoil wing design helps generate a smoother breeze because the airflow is continuous, opposed to traditional desk fans that have to chop at the air with blades.
Tags: airfoil ramp, airfoil technology, , helps generate, initial airflow