On October 18, 2009, James Dyson released a new product called the Dyson Air Multiplier. Designed to replace the small fan on the table or a big fan, Air Multipiler intended to provide smoother airflow and work in a way that is safer than similar products. The idea for the Air Multiplier came from a previous Dyson invention, Airblade hand dryer.
Fluid dynamics of an engineer working on the design to realize that a large amount of air retained in the hair, and decided to utilize it for other purposes. The fan is working with air in through the inlet in the base pillar before it is pressed out through the outlet in the ring. Jet air delivered through a ring aerofoil shape, creating local low pressure, so it pulls air from behind because it decelerates in a process known as inducement, property Coanda effect. After that force air out in front and side pushed forward join. With this process, a small brush impeller fan base can power an air hole far greater without using fast fan blades. Makers boost air at the bottom do not really have a bar, but the propeller.
Design For a nearly identical bladeless fan, has been patented by Tokyo Shibaura Electric in 1981, but never produced. Initial patent claim by Dyson was rejected by the Intellectual Property Office, decided that it "can not be considered novel or can not be considered to involve an inventive step" compared to the Japanese version. A subsequent patent application from Dyson highlights improvements aerodynamics.
How it Works :
