超聲波清洗機是利用超聲（shēng）波的高頻（pín）率，通過換能器轉化為高頻動能，然後作用於清（qīng）洗槽中的液體介（jiè）質，使液（yè）體產生空化作用，不（bú）斷的形成無數個細微氣泡，並迅速爆（bào）裂，產生衝擊力衝擊物件表麵，使表麵汙（wū）垢脫離，從而（ér）達到清洗的效果。

Ultrasonic cleaning machine is to use the high frequency of ultrasonic, through the transducer into high-frequency kinetic energy, and then act on the liquid medium in the cleaning tank, so that the liquid has cavitation effect, constantly forming countless tiny bubbles, and rapidly burst, producing impact force on the surface of the object, so that the surface dirt is separated, so as to achieve the effect of cleaning.

那（nà）麽具體是怎麽工作的呢？在介紹這個工作原理之前，91污先來了解一下，什麽是超聲波？超聲（shēng）波是科學家們（men）將（jiāng）每秒鍾振動的（de）次數稱為聲音的頻率，它的單位是赫茲(Hz)。91污人類耳朵能聽到的聲波頻率為20Hz～20000Hz(20KHz)。當聲（shēng）波的振動頻率小於20Hz或大（dà）於20KHz時，91污便（biàn）聽不（bú）見了（le）。

So how does it work? Before introducing this working principle, let's first understand what is ultrasound? Ultrasound is the number of vibrations per second scientists call the frequency of sound, and its unit is Hertz (Hz). The frequency of sound waves that our human ears can hear is 20Hz ~ 20000hz (20kHz). When the vibration frequency of sound wave is less than 20Hz or more than 20kHz, we can't hear it.

因此，我（wǒ）們把頻率高於20000赫茲的聲波稱為“超聲波”。這裏說明下，許（xǔ）多人在使用超（chāo）聲波清洗機時，聽到嗡嗡聲，就以為是超聲波發出的聲音，其實那隻是液體在空化作用下產生的聲音。

Therefore, we call the sound wave whose frequency is higher than 20000 Hz "ultrasonic wave". Here's an explanation. When many people use the ultrasonic cleaning machine, when they hear the buzzing sound, they think it's the sound of ultrasonic. In fact, it's just the sound of liquid cavitation.

超聲波清洗機上的超聲波頻率一般是（shì）28KHz以上。高可達（dá）128KHz以上，常用的是40KHz，這個頻率比（bǐ）較通用，適合大多數工件的（de）清洗。頻率越低，清洗的細膩度就越低（dī），但力度會強些。

The ultrasonic frequency of ultrasonic cleaning machine is generally more than 28kHz. Up to 128khz, commonly used is 40KHz, this frequency is more common, suitable for most workpiece cleaning. The lower the frequency, the lower the fineness of cleaning, but the strength will be stronger.

反之，則清洗的越精細，但力度會減（jiǎn）弱。然後把這種頻率通過換能器又稱超聲波驅動電源、電子箱、超聲波控製器，是大功率（lǜ）超聲係統的重要組（zǔ）成部分。在高頻率的超聲波推動下，換（huàn）能器以每秒數十萬次的頻率震動，這種震動傳遞到緊（jǐn）扣在上麵的清洗槽上（shàng），透過清洗槽將動能傳遞到槽內的液體中。在這種高頻率的震動下，液體就會產生（shēng）空化作用。

On the contrary, the more fine the cleaning, but the strength will be weakened. Then the frequency is passed through the transducer, also known as ultrasonic driving power supply, electronic box and ultrasonic controller, which is an important part of high-power ultrasonic system. Driven by high-frequency ultrasound, the transducer vibrates hundreds of thousands of times per second. This vibration is transmitted to the cleaning tank tightly above, through which kinetic energy is transferred to the liquid in the tank. In this high frequency vibration, the liquid will produce cavitation.