The vibrator produced by our company has low heat generation, good thermal stability, low resonance impedance, good consistency between frequency and static capacitance, and complete and smooth waveforms of frequency and impedance.
Working principle of broadband ultrasonic vibrator:
Ultrasonic waves are composed of a series of sparse and dense longitudinal waves, which propagate around through the liquid medium. When the sound energy is high enough, the attraction between the liquid phase molecules is broken during the loose half-cycle, forming a cavitation nucleus. The life of the cavitation nucleus is about 0.1μs. It can generate a local high temperature and high pressure environment of about 4000K and 100MPa at the moment of explosion, and generate a microjet with a speed of about 110m/s and a strong impact. This phenomenon is called ultrasonic cavitation. . The ultrasonic enhancement of the chemical reaction and transmission process is mainly caused by the chemical and mechanical effects of ultrasonic cavitation.

1. Ultrasonic vibrator mainly consists of several parts such as shell, acoustic window (matching layer), piezoelectric ceramic disc transducer, backing, lead-out cable, Cymbal array receiver.

2. Among them, the piezoelectric ceramic disc transducer plays the same role as the general transducer, mainly used to transmit and receive ultrasonic waves; and above the piezoelectric ceramic disc transducer is the Cymbal array receiver, It is mainly composed of lead-out cable, Cymbal transducer, metal ring and rubber gasket. It is used as an ultrasonic receiver to receive the Doppler return signal generated outside the frequency band of the piezoelectric ceramic disc transducer.

3. The ultrasonic dishwasher vibrator is actually a piezoelectric ceramic with the same frequency as its resonant frequency, which uses the piezoelectric effect of the material to convert electrical energy into mechanical vibration. Generally, ultrasonic waves are first generated by an ultrasonic generator, which is converted into mechanical vibration by an ultrasonic transducer, and then ultrasonic waves can be generated by an ultrasonic deriving device and an ultrasonic receiving device.

Ultrasonic Transducer classification:

A. piezoelectric chip classification: Black chip P4 series and yellow chip P8 series;

B. Frequency classification: low frequency series (17-23KHz), intermediate frequency series (25-28KHz), medium and high frequency series (33-60KHz) and high frequency series (68-200KHz);

C. Power classification: 30W series (including 35W), 50W series (including 60W), 100W series (including 80W) and other unconventional power;

D. shape classification: straight column and horn type

Ultrasonic Transducer Frequency selection:

The frequency of the transducer is inversely proportional to the wavelength, and the wavelength is related to the diameter of the cavity (strictly speaking, the nucleation time is longer due to the low frequency), and the diameter of the cavity is related to the explosion pressure. The higher the general frequency, the smaller the wavelength, the smaller the diameter of the cavity, the lower the explosion pressure, but the higher the density of the cavity, the better the permeability.

Based on the above principles:

Low frequency (17 ~ 23KHz): When the dirt of the cleaned material is heavy or difficult to be cleaned, and the explosive impact does not cause much damage to the surface of the cleaned material, the low frequency series transducer should be selected. Commonly used industries are: magnetic industry, steam protection industry, textile industry and so on. Note that the noise of this series is large, preferably sound insulation.

Medium frequency (25 ~ 28KHz): If the dirt of the cleaned material is slightly heavy or the cleaning is difficult and moderate, and the explosive impact does not cause much damage to the surface of the cleaned material, the intermediate frequency series transducer should be selected. This series of industries are the most widely used, and are common in machinery processing industry, electroplating industry, catering industry and so on.

Medium and high frequency (33 ~ 60KHz): When the dirt of the cleaned material is light, the cleaning is easy, or the explosive shock damage to the surface of the cleaned material is required, the medium and high frequency series transducer should be selected. Commonly used industries include precision parts, glass glasses, electronic components, circuit boards, etc.

High Frequency (68-200KHz): The dirt is very light and easy to clean. When the explosive impact is prohibited to damage the surface of the cleaned object, the high frequency series transducer should be selected. Commonly used industries are semiconductors, special high-precision parts, etc.

Multi Frequency Ultrasonic cleaning Transducer