Plasma hand dryer
This innovative new hand dryer offers a hybrid function, it dries and at the same time disinfects the hands. The number of germs on the hand surface as well as in the ambient air is reduced. This is especially useful in areas with strict hygiene restrictions like the food industry or hospitals.
Hand washing is not only performed to wash off dirt but also to prevent the spreading of infections. Especially during the common cold season, hand washing is the single most important protective measure. Unfortunately, when afterwards using a common jet hand dryer, a huge amount of new germs is blown onto the freshly washed hands and, additionally, further germs are distributed into the ambient air.
The mentioned problems can be solved by implementing a plasma treatment. The developed device dries the hands with a stream of warm air as usual, but in addition treats the hands with an atmospheric-pressure plasma. The plasma is created by a plasma jet as well as a dielectric barrier discharge.
A possible implementation of the plasma hand dryer. (Source: Silke Grimmelmann, Kevin Momoh, Till Papendorf und Fabio Vogel, HAWK)
German patent granted: DE102015119446B3
Patent holder: University of Applied Sciences and Arts Hildesheim/Holzminden/Goettingen (HAWK)
About the effect of plasma on germs and skin:
The successful design of the plasma hand dryer was awarded with three prices: