Noise Reduction Treatment Method and Daily Maintenance of Constant Temperature Humidity Test Chamber

April 19,2022

A constant temperature humidity test chamber is widely used in accelerated damp heat tests, alternating damp heat tests, and constant damp heat tests of large parts, semi-finished products, and finished products.

 

It can also be used in high and low-temperature routine tests, cold resistance tests, and low-temperature storage, to analyze and evaluate the performance and behavior under environmental conditions.

 

Next, we will introduce the noise reduction treatment method of a constant temperature humidity test chamber.

 

constant temperature humidity test chamber

 

Noise reduction treatment method of constant temperature humidity test chamber

 

  1. Adjust the four-foot balance at the bottom of the constant temperature humidity test chamber. It should be placed on a flat and firm ground. Balance the bottom four corners.

 

  1. Pipes and boxes shall be firmly reinforced. Check whether the reinforced part of the connection between the adjusting outer pipe and the non-standard constant temperature humidity test chamber is loose to avoid resonance during the operation of the compressor. Therefore, the outer pipe must be fixed, and the bolt should be added with a spring washer to prevent loosening.

 

  1. The compressor base shall be firm. If you press the compressor by hand, the noise will be significantly reduced and the lifting noise will increase. In general, the stress on the fixed damping rubber pad of the compressor base is uneven or the bolts are loose, and the compressor base plate is not firm. Adjust and tighten the bolts of the connecting part to replace the washer that has lost elasticity.

 

  1. When the cardboard absorbs sound along the wall, the cardboard shall be stuck to the cardboard.

 

  1. The compressor base shall be firm. If the noise behind the compressor base is significantly reduced by pressing it by hand, check whether the noise between the compressor base and the compressor base is greater than that of the piston. In addition, when the non-standard constant temperature and humidity box does not open the door, the distance is about 3 meters, and it is obvious to hear the sound of pot or panting at intervals. It is the fault of the refrigeration pipeline, which should be repaired by professionals.

 

  1. Use rubber blocks to suppress pipe vibration. In the process of use, if the noise is high, you can take the waste bicycle tire, cut it into a circle with a diameter of 30mm, cut it into a circular hole with a diameter of about 5mm in the middle, and then cut it from the outside to the center, to paste the rubber on the pipe. When the compressor is running, touch the pipe with your hand. Any pipe with vibration can be covered with several rubber blocks. Nonstandard constant temperature humidity test chambers need to cover 10-20, and the noise will drop immediately. This is because the rubber block suppresses the resonance caused by pipe vibration.

 

  1. Do not put sundries on the top of the box to prevent noise caused by resonance.

 

Daily maintenance of constant temperature humidity test chamber

 

The key to daily maintenance lies in four aspects: infrequent operation, power supply voltage, application of natural environment, and natural ventilation.

 

The residue of an internal structure shall be removed before operation. After each test, the constant temperature humidity test chamber shall be cleaned continuously to prevent corrosion. The operating cabinet of the constant temperature humidity test chamber shall be removed once a month to prevent too much dust from endangering the normal operation of facilities. After the experiment, turn on the main switch power supply, wipe away the water stains in the working room, and try to keep the experiment box in a boring natural environment, with a neat appearance anytime and anywhere. If the temperature of electrical components is too high, the cause of the disease must be queried immediately.

 

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