An ultrasonic cleaner is a device that cleans objects using high-frequency sound waves (ultrasound) passed through a liquid. These sound waves create tiny bubbles in the liquid that rapidly form and collapse — a process called cavitation. The energy released when the bubbles collapse dislodges dirt, grease, dust and other contaminants from the surface of the object, even reaching tiny cracks, holes and joints that are hard to clean by hand. Ultrasonic cleaners are widely used for jewellery, spectacles, surgical and dental instruments, and delicate laboratory and industrial parts.
An ultrasonic cleaner cleans using high-frequency sound waves (ultrasound) in a liquid.
It works on the principle of cavitation — the formation and violent collapse of tiny bubbles.
It uses ultrasonic frequencies, commonly 20 kHz to 400 kHz (above human hearing).
The transducer converts electrical energy into ultrasonic waves in the cleaning tank.
Cavitation reaches cracks, holes and joints that hand-cleaning cannot.
Common uses: jewellery, spectacles, surgical instruments, lab glassware, electronic parts.
Very delicate items can be damaged, so a suitable solution and setting must be chosen.
An ultrasonic cleaner works on the principle of cavitation produced by ultrasonic (high-frequency) sound waves.
Ultrasonic waves are sound waves with a frequency above 20 kHz (above the range of human hearing). Cleaners commonly use frequencies of about 20 kHz to 400 kHz.
When these high-frequency waves pass through the cleaning liquid, they create alternating high-pressure (compression) and low-pressure (rarefaction) regions. During the low-pressure phase, millions of microscopic vacuum bubbles form in the liquid. In the following high-pressure phase, these bubbles collapse (implode) violently.
This rapid formation and collapse of bubbles is called cavitation. The collapse releases a large amount of energy in the form of tiny, powerful jets of liquid that scrub the surface of the object and knock off dirt and contaminants — even from cracks and hidden corners.
Main parts:
Working: Step 1: The object to be cleaned is placed in the tank filled with the cleaning solution. Step 2: The generator sends high-frequency electrical signals to the transducer. Step 3: The transducer vibrates and produces ultrasonic waves in the liquid. Step 4: The waves create cavitation — countless tiny bubbles form and collapse. Step 5: The collapsing bubbles release energy that scrubs the surface and removes dirt, grease and contaminants, even from tiny gaps. Step 6: After a few minutes the object is taken out, rinsed and dried.
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An ultrasonic cleaner works on the principle of cavitation. High-frequency ultrasonic sound waves (above 20 kHz) passing through the cleaning liquid create alternating high- and low-pressure regions. This forms millions of tiny bubbles that then collapse violently. The energy released by the collapsing bubbles scrubs the surface and removes dirt, grease and contaminants.
The object is placed in a tank of cleaning solution. An ultrasonic generator sends high-frequency electrical signals to a transducer, which produces ultrasonic waves in the liquid. These waves cause cavitation — countless microscopic bubbles form and implode, releasing energy that knocks dirt off the surface, even from cracks and hidden corners. After a few minutes the object is rinsed and dried.
Cavitation is the rapid formation and collapse of tiny bubbles in a liquid caused by ultrasonic waves. During the low-pressure phase of the wave, vacuum bubbles form; during the high-pressure phase they collapse violently. This implosion releases powerful microscopic jets of liquid that scrub and clean the object's surface.
Ultrasonic cleaners are used to clean jewellery, watches, spectacle frames and lenses, surgical and dental instruments, laboratory glassware, electronic parts and circuit boards, and industrial components such as carburettors and nozzles. They are especially useful for items with cracks, holes or joints that are difficult to clean by hand.
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