Ultrasonic vegetable washers usually consist of three parts: an ultrasonic generator, a transducer and a cleaning tank. The ultrasonic generator converts the alternating current into a high frequency electrical signal of 20,000 Hz or more. It is delivered to the transducer via a high frequency cable. Generally, the ultrasonic transducer is fixed on the bottom plate of the cleaning tank. The cleaning tank is filled with liquid, and when the transducer is applied with a high-frequency voltage, it can convert electrical energy into powerful ultrasonic vibration. It seems to be a small piston with a small amplitude, only a few microns, but the vibration acceleration is very large. When multiple transducers on the slot apply the same frequency and phase of electrical energy. A large piston is synthesized to reciprocate. This vibration propagates through the bottom plate of the fixed transducer into the cleaning fluid.
When cleaning the vegetables and fruits, the cleaning liquid is placed in the cleaning container, and then the ultrasonic waves are applied in the container. Ultrasonic vibrations propagate in the liquid. When its sonic pressure reaches one atmosphere. The peak pressure of the ultrasonic wave propagating in the liquid can easily reach a vacuum or a negative pressure. But in fact, there is no negative pressure in the liquid. This will produce a large tearing force in the liquid. A liquid bubble is broken into a cavity (cavitation nucleus) to form a vacuum bubble. At this time, these voids are in a vacuum or very close to a vacuum state. When the sound pressure reaches a certain value, the bubble grows rapidly. When these holes reach the maximum value of the ultrasonic pressure (sound pressure), they are crushed due to the increase of the surrounding pressure, and the intense collision of liquid molecules will produce a very strong impact force. Collisions between liquids produce powerful shock waves.
Although the displacement and speed are very small, the acceleration is very large. Local pressures can reach several thousand atmospheres. This is the so-called cavitation.
Ultrasonic vegetable washing machine is to impact the dirt on the surface of the washed vegetables and fruits by the huge impact force generated by cavitation. This cavitation is very easy to produce at the junction of solids and liquids. Therefore, it has a very strong cleaning effect on the vegetables and fruits put into the ultrasonic washing machine washing liquid. Just like countless small cleaners wash the surface of all vegetables. Naturally, it is easy to clean the dirt on the surface of vegetables and fruits.
1, the working principle of ultrasonic household washing machine
Ultrasonic cleaning is the direct and indirect effect of the cavitation, acceleration and direct flow of the ultrasonic waves on the liquid and the dirt, so that the dirt layer is dispersed, emulsified and peeled off to achieve the cleaning purpose. In the ultrasonic cleaning machines currently used, cavitation and direct flow are applied more.
2, the application of ultrasonic household washing machine
1 Wash and remove pesticides, microorganisms, and bacterial viruses from fruits and vegetables such as grapes, cherries, apples, strawberries, cabbage, leeks, pork, and chicken.
2 disinfection of gold and silver jewelry, jewelry, headwear, brooches, glasses, bracelets, pens, CDs, razors, combs, toothbrushes, dentures, tea sets, etc.
3Using ultrasound for skin care, long-term use can keep the skin tender and lubricated.
4Using the ultrasonic cleaner, it is also possible to carry out bartending, mellow alcohol, and automatic mixing of eggs.
3, ultrasonic home washing machine effect analysis
It is decided that the ultrasonic household washing machine has the effect mainly depends on the ultrasonic power. Because the ultrasonic application is very wide, the types and powers of ultrasonic waves used in different fields are different. Generally, the power for pesticides, hormones and microorganisms should be above 400W. In order to completely remove pesticides, hormones and microorganisms from fruits and vegetables.
At present, there are mainly two kinds of ultrasonic household washing machines and ozone household washing machines:
1 Ozone household vegetable washing machine uses the chemical method of strong oxidizing ozone to clean fruits, vegetables, meat and other items. The key to determining whether ozone household washing machine is effective is the concentration of ozone (but pay attention to his side effects and harm). ).
2 Ultrasonic household washing machine uses pure physical methods to clean fruits, vegetables, meat and other items, and determines whether the ultrasonic household washing machine is effective mainly depends on the ultrasonic power of his work.
4. Is the ultrasonic vegetable washing machine useful?
(1) Innovative washing concept, environmental protection and health, automatic cleaning of fruits and vegetables, saving time and labor, winter hands can be freed from the pain of ice water.
(2) Automatically generate ozone during the washing process, which can effectively remove pesticides, kill bacteria and viruses, and protect the health of family members.
(3) There is no need to add detergent. After washing, the ozone can be quickly evaporated, no residue, and no food contamination.
(4) A new type of home appliance that is beautiful in appearance and suitable for home use.
(5) Features: The computer completes the washing and disinfecting process automatically, and the liquid crystal display panel adopts ultrasonic vibration plate and ozone sterilizing machine to remove 99% of residual pesticides with strong ultrasonic effect, and the washing is more thorough; The cleaning time program is available for easy and easy maintenance.
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