The transducer is the big heart of the ultrasonic cleaning machine. If there is a problem, the machine will not operate properly. More common is the transducer moisture and heat. The following is the solution to these two kinds of failure.
Ultrasonic cleaning machine transducer moisture treatment methods.
1, use megohmmeter to check the plug connected to the transducer, check the insulation resistance between the positive and negative poles of the transducer to determine.
2, observe the value. General common ultrasonic cleaning machine transducer requires insulation resistance greater than 30 megohms. If this insulation resistance value is not reached, the transducer is likely to be damp.
3, after checking the fault, we can carry out the sequence. The repair method is to put the whole transducer (excluding the sprayed shell) into the oven, set at about 100°C.
4, the time setting of this oven is also very delicate, too long too short are not, generally three hours is enough, if you do not want to use this method, you can also choose to use a hair dryer.
Ultrasonic cleaning machine transducer heating problems.
Ultrasonic cleaning machine transducer is a more critical part of the cleaning machine, its quality directly affects the cleaning effect. Ultrasonic cleaning machine transducer front cover with a flared shape. From the design requirements, the transducer should have a wide frequency band. General cleaning requires continuous work, the use of transducer heating problems are more serious. High power work, must use forced air cooling.
Larger power ultrasonic cleaning machine generally requires multiple transducers working simultaneously, so special attention should be paid to the installation and fixation, because their distribution directly affects the sound field distribution in the tank and the generator load characteristics. If improperly positioned, the cleaning effect will be extremely poor, and sometimes cause unnecessary vibration and empty power consumption. How to install depends on the structure of the tank, the number of transducers and other factors.
Due to the long working hours of ultrasonic cleaning machine, the heat problem is very prominent. Should be considered from the following aspects.
1, heat dissipation
Heat sink should be selected appropriately, if necessary, should add air cooling.
2, field effect tube absorption
R and C absorption at both ends of the field-effect tube must be appropriate, otherwise the field-effect tube heating problem is still serious.
3, drive circuit
Ultrasonic cleaning field effect tube drive waveform should be steeper, such as increasing the drive output power, reduce the gate resistance.
4, the center frequency adjustment
Ultrasonic cleaning machine generator output frequency directly affects the load characteristics, which in turn affects the power tube on/off state. If the frequency is not appropriate, the field-effect tube will produce extremely serious heat.