Beating the carpet : Developing an active vacuum cleaner nozzlefor high carpet performance using less energy
The power use of vacuum cleaners accounts for a substantial share of the total energy
demand in the European Union. This partly due to the common notion associating good
vacuum cleaner performance to high input power. To regulate this European Commission
will introduce a energy labeling standard from September 2014 that will enforce a power cap
for vacuum cleaners and classify them according to energy efficiency, cleaning performance,
dust-emission and sound power level. One company currently trying to adapt their products
to this label is Electrolux. The one performance criterion that is currently the furthest from
being reached is the level of dust pick up on carpet (
dpuc). Traditionally, motorized vacuum
cleaner nozzles with agitators, so called active nozzles, pick up more dust on carpet than
other (passive) nozzles.
The aim of this thesis has been to investigate whether it is possible for an Electrolux canister
vacuum cleaner system to achieve the highest energy efficiency class –
A to A+++ – while
maintaining a good cleaning performance – class
C or better – on carpet. This was done by
constructing an active nozzle which performed well on carpet on low input power. An
Electrolux active nozzle was adapted to function better with lower airflows and less vacuum.
Several prototypes of different agitators were developed and tested in the nozzle according to
industry standard testing methods.
It was concluded from testing that it was possible to reach the higher classes – A to A+++ –
in energy efficiency while maintaining a good cleaning performance class.
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