Development of a unique and innovative technique for future integration i bathroom- and kitchen ventilation systems

Purpose and goal

The aim for the Project was to develop a unique base concept for integration in future bathroom and kitchen fans. The Project was divided in separate Work Packages. In the technical part we have developed a rotor prototype with magnetique bearing and electronical steering. We have tested the base concept in laboratory environment for different parametres which are crucial for a rotor. In the second Work Package we have established a network of new contacts and came to an important conclusion about future development of the base concept towards a potential product.

Results and expected effects

In this Project we have tested a new base concept for smaller future fans. This consists of a magnetically suspended rotor which will be part of a fan system. Our measuring results were good and we have obtained the crucial knowledge about the problems regarding stability and stiffness of a rotating magnetically suspended rotor. We have managed to construct a rotor which functions well under certain conditions. We are optimistic that we can solve the remaining technical issues in the near future.

Approach and implementation

We had two difficult problems to solve: the electronical steering and the software algorithm, and the mechanical part. We have been able, together with contacts from our newly established network, to construct a working measurement set-up. Stiffness, stability and noise level are some of the important parameters we managed to measure. We have found statistics about motors and other applications relevant to our base concept. We have been part of discussions regarding energy efficient motors (especially for fans) in collaboration with Energimyndigheten in Sweden.