High and low temperature test chambers and constant temperature and humidity test chambers generate certain noise during the low temperature test. This noise mainly comes from the compressor unit of the test chamber. The compressor unit is a high-low temperature test chamber and a constant temperature and humidity test chamber refrigeration core system, so it must be guaranteed to operate reliably. Since the aerospace military system and the world's top 500 companies have strict requirements on the noise indicators of environmental test equipment, it is usually required to control at less than or equal to 75 decibels. Therefore, it is necessary to perform noise reduction on the compressor unit. First, the corresponding noise reduction measures for the box body are mainly to attach the sound insulation cotton to the sealing plate, which can achieve a good noise reduction effect. Second, reasonable design of convection and cooling air holes to minimize the operating noise of the compressor. 3. For the abnormal noise of the compressor, the piston hits the exhaust valve when the compressor is running. Check the exhaust valve bolt for looseness. If the valve and bearing are damaged, replace the new one. 4. For the refrigeration system, the noise reduction treatment is to check whether the fixing screws are loose and vibrate, such as loosening and tightening the fixing screws. 5. The solution to the liquid hammer caused by too much refrigeration oil is to check the oil level and handle the excess refrigeration oil. 6. Regarding the liquid attack caused by the refrigerant entering the gas valve, the refrigerant flow rate or the refrigerant charge amount can be appropriately reduced. Regarding the noise treatment from the high and low temperature test chambers and the constant temperature and humidity test chamber, the main problem is to solve the above problems, so that the noise is reduced within the range specified by the standard. The sound of the motor running in the compressor is slightly larger when it is quiet at night or when it is shut down. It is a normal phenomenon. If the test box is placed unevenly, it will cause excessive noise of the compressor. For the noise generated by the operation of a large compressor unit, a professional noise treatment company can be used for construction. For more information, please pay attention to the official website of Ai Sihao or call our technical hotline, we will be happy to provide you with services! Proper length as a styling hair comb, enough quantity for you to apply and meet your replacement needs Hair Combs,Fine Tooth Comb,Rat Tail Comb,Pin Tail Comb Xuchang Le Yi De Import And Export Trade Co., Ltd. , https://www.synthetichairs.com
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