Bladeless fan

The Dyson Air Multiplier

A "bladeless" fan 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 can not 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

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

References

  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". Switched.com. 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. ↑ http://phys.org/news/2015-04-panasonic-spherical-air-blower.html
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