Device for providing a volume of sterile air

A device for providing a volume of essentially sterile air, the device comprising:

• a radial fan;
• at least one particle filter;
• at least one UV-light generator;
• a housing,
• the housing at least partly enclosing the radial fan,
• the radial fan being arranged to provide a flow of air in a radial direction towards the housing,
• the housing being arranged to direct the flow of air in an axial direction such that a peripheral part of the flow has a velocity that is higher than that of a central part of the flow,
• the at least one UV-light generator being arranged inside the housing to radiate the flow of air and the at least one particle filter with UV-light, and
• the at least one particle filter being arranged to filter the flow of air, thereby creating the volume of essentially sterile air;
• and
• at least one stationary guiding structure having at least one surface angled with respect to the radial direction, the at least one surface configured to redirect at least a portion of the air flow incident on the at least one surface, towards a central axis of the device.