The coronavirus pandemic has made the purification of air in enclosed spaces more relevant than ever before, but effective air purification makes sense even during a “normal flu season”. Decentralised air purifiers are offered on the market by various companies for general air purification and in particular to kill viruses, bacteria and germs.

Air purifiers can also help to clean indoor air of particles that can trigger allergies, such as fine dust, mites, mould spores and pollen.

In air purification, it is essential to avoid hazardous distribution of aerosols and particles in enclosed spaces resulting from turbulence in the indoor air.

The LEKF works with a two-stage cleaning process in accordance with established HYDAC Processmicron® element technology and UV-C disinfection, in conjunction with layered or displacement ventilation. Our air purifiers thus convey air in a way that supports the natural air flow processes inside a room to achieve layered/displacement ventilation. This involves the indoor air being taken in through the filter element at the top and conveyed through the UV-C disinfection stage in the bottom of the container. The cleaned and disinfected air flows out at floor level.

A CO₂ sensor also continuously monitors the current air quality and uses an LED lamp to signal when an air exchange would be useful.

As it is not necessary to mix the entire volume of indoor air with the intake air when this LEKF air conveying principle is used, the device can manage with significantly lower intake air flows than similar competitor products. A hazardous distribution of aerosols resulting from turbulence in the indoor air is therefore avoided with the LEKF – unlike air purifiers that use mixing ventilation.

Air purifiers with HEPA filters also become contaminated quickly, as bacteria and viruses find it easy to reproduce in the warm and humid environment of the filter. The advantage over using air purifiers with HEPA filters is that the LEKF’s filter is exposed to UV-C radiation, which disinfects it automatically. This also means that the filter service life of the HYDAC LEKF if significantly higher than for HEPA filters.