超聲波引入溶液中時，會產生交替壓力，用于空化閾的聲波在液體中傳播時能夠產生空化氣泡并且能顯著提高氣體從溶液中到氣泡的傳質速率。空化氣泡由溶液中微小的氣核產生，在聲波的稀疏相內由于張應力（負壓力）的作用會產生這些空泡。

When the ultrasonic wave is introduced into the solution, it will generate alternating pressure. When the sound wave used for cavitation threshold propagates in the liquid, it can generate cavitation bubbles and significantly improve the mass transfer rate of gas from the solution to the bubbles. Cavitation bubbles are generated by tiny gas nuclei in the solution. These bubbles will be generated in the sparse phase of sound wave due to the effect of tensile stress (negative pressure).

如果張應力在空泡形成后繼續存在，此時空化泡就會擴張到初始尺寸的許多倍。在這種情況下，空化泡保持球形結構，之后不斷地增長、振動、崩潰。超聲波作用時，溶液中氣體成分可通過氣-液界面“定向擴散”進入空化氣泡，空化氣泡進人生長階段，當空化氣泡在溶液表面崩潰時，氣體會從氣泡中逸出，這就造成了脫氣作用。

If the tensile stress continues to exist after the cavitation is formed, the cavitation bubble will expand to many times its initial size. In this case, the cavitation bubble maintains a spherical structure, and then grows, vibrates and collapses continuously. Under the action of ultrasonic, the gas components in the solution can enter the cavitation bubble through the "directional diffusion" of the gas-liquid interface, and the cavitation bubble enters the growth stage. When the cavitation bubble collapses on the surface of the solution, the gas will escape from the bubble, resulting in degassing.

超聲波脫氣設備優點，泡沫為氣泡的大量聚集，超聲波脫氣氣設備是在泡沫生成前期、氣泡未大量聚集前對液體進行消泡、脫氣，或是對溶解、混合在液體內的氣體進行消泡、脫氣。

Advantages of ultrasonic degassing equipment: foam is a large number of bubbles gathered. Ultrasonic degassing equipment is used to defoaming and degassing the liquid in the early stage of foam generation and before a large number of bubbles gather, or to defoaming and degassing the gas dissolved and mixed in the liquid.

整個過程不使用任何消泡劑，是完全的物理消泡方式，也可稱作機械消泡方式。對于已經生成的表面泡沫，該設備作用不明顯，需要配合消泡膜方式共同加以解決。

The whole process does not use any defoaming agent, which is a complete physical defoaming method, also known as mechanical defoaming method. For the generated surface foam, the equipment has no obvious effect, which needs to be solved together with the defoaming film method.

脫氣主要運用的是超聲的“定向擴散”，一旦產生空化，內部還是有空氣，在一些熔融液脫氣純化應用中以不產生空化佳。

Degassing mainly uses ultrasonic "directional diffusion". Once cavitation occurs, there is still air inside. In some applications of degassing and purification of molten liquid, it is best not to produce cavitation.

液體的空氣排掉，減少超聲波空化反應產生的氣泡的阻力，增強超聲波清洗機的清洗效率。還有一種作用就是超聲波清洗機工作時間久了會產生一種超聲波疲勞，減低清洗效果和效率，排氧脫氣功能還可以消除這種超聲波疲勞。

The liquid air is discharged, which reduces the resistance of bubbles generated by ultrasonic cavitation reaction and enhances the cleaning efficiency of ultrasonic cleaning machine. Another function is that the ultrasonic cleaning machine will produce a kind of ultrasonic fatigue after working for a long time, which will reduce the cleaning effect and efficiency. The oxygen and degassing function can also eliminate this kind of ultrasonic fatigue.

綜上，可以看出超聲波清洗設備的脫氣功能是非常強大的，能更好的達到清洗目的，提高清洗效果。

In conclusion, it can be seen that the degassing function of ultrasonic cleaning equipment is very powerful, which can better achieve the purpose of cleaning and improve the cleaning effect.

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