Ultrasonic is sound generated beyond the human audible level.
In real life, high pitch sound is created by high frequency, and alternatively, the low and base tone is created by low frequency. Frequencies above 16 kHz in general are being considered as ultrasonic. Typical ultrasonic frequencies used for cleaning purposes are from 20 kHz to 80 kHz.
How can a sound clean?
A physical effect called "cavitations" is what ultrasonic waves generate in liquid and are responsible for the cleaning process. Cavitations form when ultrasonic waves travels through liquid. When a sound wave travels through water, it stretches and compresses the water medium to transmit sound. When the amplitude of such sound wave increases to a level when water can't hold the stretch, the sound literally tears the water apart and millions of vacuumed "bubbles" are formed under such negative pressure.
The sizes of vacuumed "bubbles" increase until their equilibrium is reached, the "bubbles" then rapidly compress the water and create millions of tiny liquid jets.
The jet action releases a tremendous amount of energy stored within vacuumed bubbles, it is estimated to have a temperature of more than 5000 degree Celsius and a pressure of more than 10,000 PSI at molecular level when such implosion takes place. The huge amount of pressure released at each "bubble" provides an ideal physical phenomenon responsible for the effective cleaning action ultrasonic cleaner offers.
Ultrasonic cleans cracks
Cavitation takes place everywhere liquid can reach, during the cleaning process, the article being cleaned is submerged into water or cleaning solution, millions of micro-sized "bubbles" created by ultrasonic waves are capable of reaching into fine trends or cracks.
Ultrasonic Cleaning: frequency higher the better?
The frequency of an ultrasonic cleaning device is connected with the cleaning power. The ideal cleaning frequency is determined by what is going to be cleaned. Simply speaking, the higher the frequency the more capable it is of removing smaller particles.
Ultrasonic, the answer to environmental-friendly cleaning for home.
Although ultrasonic has been an effective industries cleaning method for decades, unlike the environmentally unfriendly chemical-based cleaning products that are widely used at home, we believe ultrasonic will be the next generation cleaning process for the home.
