After the two-box thermal shock test chamber is started, the machine will generate some noise during operation due to components such as compressors and motors. However, many large enterprises require that the noise decibel of the thermal shock test chamber should not exceed 75 decibels in total. That is to say, in the operation of the thermal shock test chamber, the noise cannot be louder than that of ordinary people. This requirement can be said to be very strict, so how to reduce the noise of the thermal shock test chamber has become a trouble for many businesses. The following Ningbo Kebao Test Equipment Co., Ltd. said how to reduce the noise of the thermal shock test chamber.
First look at the spring of the compressor. If the damping spring of the compressor is deformed, the pressure regulating function will be unstable, and the pressure fluctuation will cause great noise during the operation of the compressor. This time you need to replace the spring. Also pay attention to the abnormal noise of the compressor. When the compressor is running, the piston hits the exhaust valve. Check the exhaust valve bolt for looseness and replace the new one if the valve and bearing are damaged.
The second is to carry out corresponding noise reduction measures on the box, mainly to attach the sound insulation cotton to the sealing plate, which can play a good effect of reducing noise. Reasonable design of convection and cooling air holes reduces the operating noise of the compressor. Another point is to check if the fixing screws are loose and vibrate, such as loosening the fixing screws.
The last step is to check the oil level. The frozen oil should not be too much or too little, so we have to deal with the excess refrigeration oil. We can also reduce the refrigerant flow rate or reduce the refrigerant charge.
The above is the introduction of how to reduce the noise of the two-box thermal shock test chamber. How to analyze and solve the problem of noise failure of the compressor in the thermal shock test chamber? Let's take a look at the following.
How to analyze and solve the problem of noise failure of the thermal shock test chamber compressor.
First of all, the noise of the compressor in the thermal shock test chamber is abnormal. When a fault occurs, the following three aspects need to be checked and analyzed:
1. The piston hits the exhaust valve during operation. Check the exhaust valve bolt for looseness.
2. The valve piece is damaged and the new valve piece is replaced.
3. Bearing wear, repair or replacement of new ones.
If it is caused by the failure of the refrigeration system, you can refer to the following scheme to solve the noise problem of the thermal shock test chamber:
1. The fixing screw is loose and vibration occurs. Solution: Tighten the fixing screws.
2. The two-box type thermal shock test chamber has too much frozen oil to cause liquid hammer. Solution: Check the oil level and handle the excess refrigeration oil.
3. The refrigerant enters the gas valve to cause liquid hammer. The solution is to reduce the refrigerant flow rate or reduce the refrigerant charge.
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