Degassing with ultrasound
The elimination of dissolved gases in the washing liquids is absolutely essential for good propagation of the sound waves in the washing liquid.
In fact, in the washing liquid, especially when freshly introduced into the tub and recently dissolved the detergent, or even at low temperature compared to the regime, there is the presence of air in the form of numerous gas bubbles.
These prevent good propagation of ultrasonic waves generated by PZT transducers.
The reason is because the velocity of the sound is directly proportional to the density of the propagating medium: for example, in the steel is 5,000 mt / sec, in the water is 1,000 mt / sec, in the air it is 330 mt / sec.
Then our sound wave, traveling in the washing liquid at 1,000 mt / sec, meeting a bubble of air slows down and therefore deviates, if it meets immediately another ‘air bubble still deviates, to go back if the air bubbles they should be very dense.
Degassing with ultrasound occurs spontaneously, but it needs some time (10-15 minutes with hot liquids).
To speed up this process, our generators have a special operation called DEGASSING, which means that multiple frequency composite waves are automatically transmitted for short periods of time.
This speeds up the release of air throughout the tank volume and the ultrasound action comes soon to maximum efficiency..