Have you ever seen ultrasonic cleaning equipment? In fact, this kind of equipment is now very popular. In many glasses stores, ultrasonic cleaning machines are used to clean the frames and lenses. The upper part of the device is a water tank filled with water, and the lower part is an ultrasonic generator. As soon as you turn on the switch, you can see a piece of foggy "bubbles" rising to the surface of the water and arousing bursts of water spray.

其實，水里的這些氣泡并沒有“氣”，都是真空的，是由超聲波產生的氣穴，正確的名稱應該是“微小真空核群”，它是無數微小真空核的集合體。氣穴酷似分布在宇宙中的無數的銀河，可以被稱為“微小銀河”。這種真空核在液體中一邊以每秒2萬次以上的頻率重復著生成、消減的過程，一邊還在高速移動。超聲波清洗的秘密就在這里，強力超聲波在液體中引發劇烈的振蕩，利用真空核的生成和消失時的正負沖擊力進行清洗。

In fact, these bubbles in the water have no "gas". They are all vacuum. They are cavitation generated by ultrasound. The correct name should be "micro vacuum core group", which is the aggregation of countless micro vacuum cores. Air pockets are like countless galaxies in the universe, which can be called "tiny galaxies". This vacuum core is still moving at a high speed while repeating the process of generation and reduction at a frequency of more than 20000 times per second in the liquid. The secret of ultrasonic cleaning is here. Strong ultrasonic waves cause violent oscillations in the liquid and use the positive and negative impact force when the vacuum core is generated and disappears for cleaning.

超聲波清洗技術已有30多年的歷史，但是，對這項技術一直存在一個誤解，使人們懷疑超聲波清洗的效果。傳統的超聲波清洗理論認為，氣泡起到了清洗的作用。后來經過反復試驗發現，事實上，氣泡只是由超聲波的強力粗密波引起的單純的氣體爆發而已，它反而會抑制甚至消除超聲波清洗的清洗力，真正發揮清洗作用的是真空的氣穴。這一發現實現了超聲波清洗領域的革命性突破。這就是超聲波清洗的新理論。以此為基礎的超聲波清洗技術定義為新超聲波清洗技術。

Ultrasonic cleaning technology has a history of more than 30 years, but there has been a misunderstanding about this technology, which makes people doubt the effect of ultrasonic cleaning. The traditional ultrasonic cleaning theory holds that bubbles play a role in cleaning. After repeated experiments, it was found that, in fact, the bubble is only a simple gas explosion caused by the strong coarse and dense wave of ultrasonic wave. Instead, it will inhibit or even eliminate the cleaning force of ultrasonic cleaning. What really plays the role of cleaning is vacuum cavitation. This discovery has achieved a revolutionary breakthrough in the field of ultrasonic cleaning. This is the new theory of ultrasonic cleaning. The ultrasonic cleaning technology based on this is defined as the new ultrasonic cleaning technology.

人們根據這一理論研制的超聲波清洗設備，清洗效果大大優于同類產品，能夠成功地控制氣穴現象的發生位置、發生密度、發生效率和沖擊力。早的超聲波清洗技術，大量使用三氯乙烯、氟里昂等有毒有害的化學溶劑作為清洗介質，對環境的污染相當嚴重，甚至有人因為飲用了受污染的水而過早死亡。后來人們開發了更高效的清洗技術，可以用水代替氟里昂等有毒有害介質，而且更加環保，因此在1993年，這項技術獲得美國環境保護局所頒發的環境保護獎。

The ultrasonic cleaning equipment developed according to this theory has a much better cleaning effect than similar products, and can successfully control the location, density, efficiency and impact force of cavitation. The earliest ultrasonic cleaning technology used a large number of toxic and harmful chemical solvents such as trichloroethylene and freon as cleaning media, which caused serious environmental pollution and even premature death due to drinking contaminated water. Later, people developed more efficient cleaning technology, which can replace toxic and harmful media such as Freon with water, and is more environmentally friendly. Therefore, in 1993, this technology won the Environmental Protection Award issued by the U.S. Environmental Protection Agency.

超聲波除了可以對金屬、塑料、橡膠、液晶等各種部品進行去毛刺和精密清洗外，也可應用于食品，如淘米、洗菜、清潔餐具、洗滌衣服以及醫療用品等的洗滌，此外還可以進行超聲波高速腐蝕、超聲波顆粒研磨、超聲波有機合成等，發展的前景十分廣闊。利用這種技術還可以開發超聲波洗衣機，除了水之外，無需洗衣粉或洗衣液，這種洗衣機一旦研制成功，將是洗衣業的一場革命，不僅工作效率大大提高，而且可以解決洗衣粉的污染問題。

In addition to deburring and precision cleaning of metal, plastic, rubber, liquid crystal and other components, ultrasonic can also be used in food, such as rice washing, vegetable washing, tableware cleaning, clothes washing and medical supplies. In addition, it can also carry out ultrasonic high-speed corrosion, ultrasonic particle grinding, ultrasonic organic synthesis and so on. The development prospect is very broad. This technology can also be used to develop ultrasonic washing machines. In addition to water, there is no need for washing powder or washing liquid. Once this washing machine is successfully developed, it will be a revolution in the washing industry. It will not only greatly improve the work efficiency, but also solve the pollution problem of washing powder.