Cleaning device and use

A cleaning device (1) for aspirating a suction air volume flow loaded with particles from an environment, the cleaning device comprising

• an air intake opening (2) having a first conduit cross section (21) and serving to aspirate the suction air volume flow loaded with the particles, aerosols, bacteria and/or viruses from the environment when the cleaning device (1) is in an active mode,
• a liquid holding unit (4) comprising an immersion tube (3) and serving to hold a liquid,
• the immersion tube (3) being connected to the air intake opening (2) in a suction-air-conducting manner at a first end (7) and being configured in such a manner that it is immersed in the held liquid in such a manner at a second end (8) that the suction air volume flow loaded with the particles flows through the held liquid when the cleaning device (1) is in active mode so that the particles are retained, and
• vacuum generating means (6) for generating the suction air volume flow in active mode,
• wherein
• a second conduit cross section (22) of the immersion tube (3) for guiding the suction air volume flow is larger than the first conduit cross section (21) of the air intake opening (2) at least at the second end (8).