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issue: January 2007 APPLIANCE European Edition

Motor Technology
Dyson Vacuum Motor Also Powers Hand Dryer


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by Erin Biesen, Associate Editor

UK bagless vacuum pioneer Dyson added a new innovation to its already impressive track record thanks to a flexible motor technology that can be applied to several product segments.
The company recently announced that it is introducing the canister vacuum DC12 in the United Kingdom and U.S. markets. This model, already sold in Japan as Baby Dyson, is unique for its ultra-compact size, achieved by using the internally developed Dyson Digital Motor (DDM), with a fan speed up to 100,000 rpm. Airflow design was inspired by the turbo charger technology used in jet engines. The brushless motor is computer controlled and said to be half the size of a conventional motor. The appliance maker also claims it spins faster than a Formula 1 racing car engine.
The fan required a special grade of material. Dyson considered several materials, including cast aluminum, before it selected a grade of PEEK™ polymer from UK-based Victrex plc that offered the right durability and fatigue strength. Grade 450CA30 is a semi crystalline thermoplastic from the polyetherketone family and is said to offer a high grade of dimensional stability and molding tolerance accuracy, which helps when it comes to manufacturing the complex fan design.
The motor also powers Dyson’s new Airblade™ hand dryer, which was introduced in November in the UK and Ireland. In this application, the ultra-high air speed is said to blow the water off of hands, instead of drying them through evaporation, so no air heating is required. With the airspeed further enhanced by very narrow air outlets, the unit is said to dry two hands simultaneously in 10 seconds.


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Suppliers mentioned in this article:
Dyson Inc.
 

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