Fog fountain
A fog fountain is a mostly bowl-shaped water vessel made of glass, more rarely ceramic or stone, in which a piezoelectric ultrasonic transducer is attached to create a fine water mist by means of atomization . There are often lights to effectively illuminate the fog floating over the water. Usually a stand is included, which allows it to be set up anywhere in the room. If it is set up on furniture, it can be moistened by the falling mist and thus damaged.
Very soft, better distilled water is filled in so that no limescale deposits form on the device.
The fog is generated by a tealight-sized piezoelectric ultrasonic transducer, which is usually concealed and always placed just below the surface of the water. The special ceramic built into this device converts the applied electrical voltage into ultrasound, which mechanically tears fine droplets out of the water. These droplets are so fine that they can float in the air for a long time and create a mist.
The air in the rooms is humidified by the mist. This can make a contribution to air humidification, especially in winter when the humidity is too low. However, the amount of water introduced is not sufficient for an effective increase in humidity in normally ventilated larger rooms.
A mist fountain cannot achieve an occasionally claimed negative ionization of the mist or the air due to the purely mechanical functional principle.
Health hazard
- Humidifier lung (exogenous allergic alveolitis )
- Humidifier fever (toxic alveolitis)