40 Khz FUYANG Submersible Ultrasonic Transducer 1050W Immersible Transducer Ultrasonic

1050W 40 khz FUYANG Ultrasonic Immersed Transducer Box For Oil Dispersed chemical reactions

The ultrasonic generator

The ultrasonic generator converts a standard electrical frequency of 60 Hz into the high frequencies required in ultrasonic transmission.

The ultrasonic frequency generator plays a key role in the overall performance of the system. Earlier generator designs developed a fixed frequency signal designed to operate at the resonant frequency of the transducer system. For example, if the design frequency of the transducer was 20 kHz, the generator developed exactly a 20 kHz signal. The problem with this design is that it tends to create hot spots and standing waves in the tank bath, providing uneven cleaning in different tank areas.

The development of sweep frequency generators eliminated these problems. In most any ultrasonic cleaning system, there are multiple transducers that make up the transducer system. Due to manufacturing tolerances, it is highly unlikely that each transducer will have exactly the same resonant frequency. With a fixed frequency generator, the transducers that are closest in resonant frequency will operate the most efficiently in their respective areas, creating an uneven cavitation pattern. By sweeping the frequency just slightly above and below the center frequency, all transducers see their resonant frequency at the rate of sweep and maximum efficiency occurs, eliminating hot spots. Sweep frequency also eliminates standing waves from occurring by repeatedly overlapping the wavelength.

Many ultrasonic generators also have “autofollow” circuitry. Autofollow circuitry is designed to maintain the center frequency when the ultrasonic tank is subject to varying load conditions. When parts are placed in the tank or when the water level changes, the load on the generator changes. With autofollow circuitry, the generator matches electrically with the mechanical load, providing optimum output at all times to the ultrasonic tank.

 
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