Bladeless fan

From Wikipedia, the free encyclopedia
Jump to: navigation, search
The Dyson Air Multiplier

A bladeless fan (sometimes called an air multiplier) blows air from a ring with no external blades. Its blades are hidden in its base. The first concept was created by Toshiba in 1981.[1] Dyson claims that its bladeless fans (U.S. Patent 8,454,322) produce a more constant airflow than traditional fans.[2]

The air is drawn in by a fan in the base and then directed up into a ring. It comes out of a crack all around the ring and passes over a shape like that of an aircraft wing. Industrial designer Sir James Dyson named his fan the Air Multiplier.[3]

Dyson sued Chinese companies because they began selling bladeless fans for much less than Dyson.[4] The Chinese responded that Dyson cannot patent an invention that has already been invented, that Toshiba invented the fan in 1981 and its patent expired after 20 years.[5]

Q fan[edit]

In 2015, Panasonic announced a spherical bladeless fan.[6]


  1. ^ "Dyson fan: was it invented 30 years ago?". Telegraph. Retrieved 2014-01-09. 
  2. ^ Samiljan, Tom (2009-10-12). "James Dyson Explains How New Bladeless 'Air Multiplier' Fan Works". Archived from the original on February 5, 2010. Retrieved 2014-01-09. 
  3. ^ "Sir James Dyson explains his bladeless fan". YouTube. Retrieved 2014-01-09. 
  4. ^ Dan Milmo. "Dyson seeks to block copycat manufacturers in China". The Guardian. Retrieved 2014-01-09. 
  5. ^ "Dyson fan: was it invented 30 years ago?". Telegraph. Retrieved 2014-01-09. 
  6. ^