How an Ultrasonic Generator Works

The ultrasonic generator is the heart of an ultrasonic cleaning system. It generates the high-frequency signal, which the ultrasonic transducers convert to sound waves of the cleaning solution within a cleaning tank. In addition to generating the signal, the ultrasonic generator controls the frequency and the power levels to produce several or a range of frequencies as part of an integrated, turnkey solution or independently to power separate transducers.

As the sound waves go through the cleaning liquid, the cavitation bubbles start to emerge in the low-pressure troughs of the waves, then collapse in high-pressure peaks. This action of the microscopic bubbles leads to a powerful scrubbing action that helps dislodge the dirt and particles off the surfaces of parts (in the cleaning liquid of the cleaning tank). The bubbles can even clean hard-to-reach places like holes and crevices, leaving the item thoroughly cleaned. Ultrasonic cleaning systems are generally considered superior to other traditional methods that use chemicals or mechanical scrubbing.

Apart from producing the high-quality signal, Kaijo’s ultrasonic generators provide the frequency needed to optimize cleaning performance for the specific cleaning application. Setting the right frequency is the key factor for an effective cleaning:

·         Low frequency (26 kHz to 38 kHz range) - This frequency produces large, energetic cavitation bubbles, making them suitable for cleaning machined parts, glass, and wires.

·         Mid-range frequency (78 kHz to 160 kHz) - The bubbles become smaller and the cleaning action is gentler. Suitable for cleaning hard disk drives, solar panels, and ceramic parts.

·         High frequency (450 kHz to 950 kHz) - The bubbles become even smaller and the cleaning action is at its most delicate. Suitable for cleaning semiconductors, LED's and fragile medical components.

If an Ultrasonic generator is used with a single process to always clean the same parts, selecting a single-frequency model is a good choice. For general-purpose usage, where the ultrasonic cleaning system may be used in a wide variety of cleaning applications, a generator that can produce a range of frequencies is the best option.

Read the complete article titled “How an Ultrasonic Generator Works” for additional information. If you have questions, want a free consultation or quote, contact Kaijo at 408-675-5575 or send an email to info@kaijo-shibuya.com.