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What's the difference between a single/dual frequency ultrasonic cleaner?

Date: 2022-09-28Number: 193

There are many people do not know how to choose the appropriate cleaning of their own new products ultrasonic cleaning machine, some customers buy the ultrasonic cleaning machine after the cleaning do not feel clean; Some customers feel that after cleaning the damage to good products, which is in fact very likely you pick the wrong, their choice of ultrasonic cleaning machine cleaning frequency is not suitable for their own products. The following small series for everyone under the different frequency of ultrasonic cleaning machine, what is different. So before we get right to the point, first of all, let's look at how the ultrasonic cleaning machine works?

dual frequency ultrasonic cleaner

01 ultrasonic cleaning machine working principle

The basic principle of ultrasonic cleaning machine mainly through the transducer, the power of ultrasonic frequency source into mechanical vibration of the sound energy, according to the cleaning groove wall will be ultrasonic radiation to the cleaning fluid in the groove. Because of the ultrasonic radiation, so that the micro-bubbles in the liquid in the tank can be under the influence of sound waves and then maintain vibration. Destroy the waste and clean the surface of the adsorption, causing the waste layer fatigue failure so be separated, gas-type bubble vibration on the solid parts of the cleaning. In simple terms-use of solution medium process generated in the cavitation effect to achieve the goal of cleaning.

02 single-frequency/dual-frequency ultrasonic cleaning machine what is the difference?

A single frequency is literally one frequency

Dual frequency, there are actually two different frequencies that can be converted for applications

For example, 28 khz is a single frequency; if there are two frequencies, 28 khz and 40 khz, and can be converted to the application, it is a dual frequency. 28 khz means 28,000 vibrations per minute, the same as 40 khz.

Although single-frequency ultrasonic cleaning machines are now widely used on the market (industrial ultrasonic cleaning machines, large ultrasonic cleaning machines, household ultrasonic cleaning machines and equipment, and so on) , most ultrasonic cleaning machines use a single frequency of 28 khz, 40 khz and other frequencies, but whether it is using high-frequency or low-frequency ultrasound, it is generally only in this fixed frequency near the location of the work, the work nature is unitary, it can not satisfy some units (medicine, laboratory, scientific research unit, etc.) sometimes must two or several frequency requests.

The dual-frequency ultrasonic cleaning machine just combines the advantages of high-frequency ultrasonic and low-frequency ultrasonic respectively, it can change different frequency for different cleaning requirements, not only to complete a machine multi-use also save cleaning costs, eliminates the complexity involved in replacing the actual operation of several machine devices.

03 low/high frequency ultrasonic cleaning machine what is the difference?

Conventional ultrasonic cleaning equipment operating frequency is generally in the range of 20 khz-120 khz, and a machine only stick to a frequency near the position.

When the ultrasonic frequency is lower, the wavelength is larger, the cavitation bubbles produced are more robust, the compressive strength is higher, the impact force on the surface of the workpiece is larger, and because the wavelength is larger, the uniformity of sound field distribution in the cleaning tank is also weak, so the lower frequency ultrasonic cleaning machine is more suitable for cleaning the surface of heavy stains or difficult to clean the product workpiece.

When the ultrasonic frequency is high, the wave length is short, the cavitation bubble produced is fine, the compressive strength is low, the impact force on the surface of the workpiece is small, because the wave length is small, the cavitation bubble is fine, so the sound field distribution is more symmetrical, the penetration of sound wave is improved, and the dispersing and emulsifying ability of the fine waste is also improved, therefore, the higher frequency ultrasonic cleaning machine and equipment is more suitable for cleaning more fine, higher surface accuracy and complex shape of the product workpiece.