Motor and fan manufacturer Ziehl-Abegg is breaking into new market segments with a further motor size. This completion of its product range of energy-saving EC motors accompanies the introduction of new impellers. The combination of impeller and EC motor reduces noise and power consumption compared to the current market standard.

"Better household insulation increases the need for controlled ventilation," explains Product Manager Moritz Kr?mer the rising demand for fans for residential ventilation. This requires small fans that provide continuous reliable operation for many years. With the EC055 motor size, Ziehl-Abegg can now apply its expertise in the construction of efficient electric motors in this application area. The small EC fans are also used for heat pumps for water heating, in electronic cooling and in refrigeration.

"Whereas in electronic cooling the focus is on power consumption, in residential applications we also have to consider noise generation," adds Kr?mer. With this in mind, Ziehl-Abegg has designed a new centrifugal impeller for this application with a special backward curved blade design. "This centrifugal fan is the product of our decades of experience in developing optimum blade geometry," explains the engineer. The new centrifugal impellers can of course be used in other areas, too. In the output range of 100 watts to 6 kW, there are only a few manufacturers of energy-saving motors in the world who can provide the full spectrum of products. With the so-called EC055 Ziehl-Abegg has brought a product to market that combines better performance and noise characteristics with standard installation dimensions. EC motors from Ziehl-Abegg are also known as "ECblue".

EC motors are direct current external rotor motors that are equipped with permanent magnets. When the motor turns, the electronic circuit determines the position of the rotor, which is then used to control the motor winding. This control is known as commutation, with the EC in EC motor standing for "electronically commutated". The official product presentation will take place at the ISH in Frankfurt from the 10 to 14 March 2015. This exhibition is the world's leading convention for bathrooms, building, energy, air-conditioning technology and renewable energies.