The Dyson Air Multiplier at the IFA Berlin trade show in 2010 A bladeless fan, also known as an Air multiplier fan, is a fan that blows air from a ring or oval opening with no external blades. Its vanes are hidden in its pedestal and direct the collected airflow through a

toroid In mathematics, a toroid is a surface of revolution with a hole in the middle. The axis of revolution passes through the hole and so does not intersect the surface. For example, when a rectangle is rotated around an axis parallel to one of its ...

, blowing a thin high-velocity smooth airflow from a continuous slot across the surface of the tube or toroid. The concept was created by

Toshiba , commonly known as Toshiba and stylized as TOSHIBA, is a Japanese multinational conglomerate corporation headquartered in Minato, Tokyo, Japan. Its diversified products and services include power, industrial and social infrastructure system ...

in 1981 and was later popularized by industrial designer

James Dyson Sir James Dyson (born 2 May 1947) is a British inventor, industrial designer, farmer, and billionaire entrepreneur who founded Dyson Ltd. He is best known as the inventor of the dual cyclone bagless vacuum cleaner, which works on the princi ...

, who used the technique in a consumer fan introduced in 2009, calling it the Air Multiplier. It was included in Time's 50 Best Inventions of 2009 list. The principle has been in use for a long time as an ejector or injector.

History

The first concept was created by

in 1981.

History

References

See also