In the last article, we learned why there is noise in the high and low temperature damp heat test chamber, so what should we do if the noise is loud?

1. Properly raise the four corners of the high and low temperature damp heat test chamber, and raise the test box by 3 to 6 cm and adjust the balance of the four corners to increase the air convection space at the bottom of the box. In this way, compressor noise and other noise from the bottom of the tank are removed from the bottom of the tank, reducing noise from both sides and the upper part of the test chamber.

2. Use rubber block to restrain the vibration of the pipe. If the test box is loud during use, the bicycle tire can be taken out, cut into a round shape with a diameter of 30 mm, and a circular hole with a diameter of about 5 mm is cut out from the outside. Cut the center to attach the rubber block to the tube. When the compressor of the equipment is running, touch the pipe by hand. If there is a tube with a feeling of shaking, you can put on several rubber blocks. One test box needs to be 10 to 20, and the noise will drop immediately. This is because the rubber block suppresses the "resonance" caused by the vibration of the tube.

3. The back side of the high and low temperature damp heat test chamber has a certain inclination angle to the wall surface. After the back side and the wall surface are inclined at 1 to 3 degrees, the high and low temperature damp heat test chamber has a large opening on one side and a small opening on one side, which is flared. The large side emits a lot of noise and should face the object; the small side has less noise and should face the active area of ​​the person.

4. The base of the compressor of the high and low temperature damp heat test chamber should be firm. If the compressor is pressed tightly by hand, the noise will be significantly reduced, and the noise will increase when the hand is lifted. Generally, the fixed vibration damping pad of the compressor base is unevenly stressed. If the bolt is loose and the bottom plate of the compressor is not firm, adjust the bolts of the connecting part and replace the gasket that loses the elasticity.

5. The pipeline and the high-low temperature damp heat test box are firmly reinforced. It is necessary to check whether the connection reinforcement between the outer pipe and the box is loose, so as to avoid resonance when the compressor works. Therefore, the outer pipe must be fixed, and the bolt should be spring washer to prevent loosening.

高低温湿热试验箱突然有噪音怎么办?下

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