Ultrasonic nebulizer
An ultrasonic nebulizer is a device used to generate mist by atomizing liquids. Ultrasonic nebulizers are used in medicine for the inhalation of drugs , they are also used for effective room design and humidification and in steam baths . Ultrasonic nebulizers are also used when keeping reptiles in order to achieve optimal humidity.
Ultrasonic nebulization in greenhouses causes the mist to increase the humidity without excessively condensation water from settling on the leaves. In aeroponics , the bare roots of plants are misted with hydroponic fertilizer solutions, the plant roots are optimally supplied with oxygen (for root breathing ), which results in enormous root growth (see also hydroponics ).
Ultrasonic nebulizers
Ultrasonic nebulizers are ideal when it comes to hygienic long-term humidification. Effective pneumonia prophylaxis is possible with sterile systems and the use of sterile water . The risk of germs is effectively minimized.
Ultrasonic nebulizer in the salt grotto
The result is a velvety, dry and stable mist, which is conducted into the enclosed space through a filtered air flow via silicone hoses and whose finest particles reach deep into the lungs.
In contrast to conventional inhalation techniques, this brine mist is not only absorbed through the lungs, but also through the nebulisation of an entire room through the skin and thus over the entire body .
Fog generation
The fog is generated by mechanical vibrations of up to 3 MHz , which are transferred to a liquid film. These vibrations are usually generated by piezoceramic elements that convert electrical vibrations into mechanical ones. They can lead to the formation of capillary waves on the surface of the liquid film , which erect exponentially with increasing excitation frequency.
If the excitation frequency reaches a certain value, droplets of a certain diameter can form. The droplet diameter decreases with increasing excitation frequency or higher density and lower surface tension of the respective liquid. Good ultrasonic nebulizers achieve drop sizes of 2 to 4 µm , MMAD .
See also
source
- Günter Wozniak: Atomization technology: principles, processes, devices. Springer, 2003. ISBN 3-540-41170-4