Research on Noise Characteristics and Noise Reduction Mechanism of Scroll Compressor Under Different Working Conditions
In order to explore the noise characteristics and noise reduction mechanism of scroll compressor under different working conditions,the experimental compressor unit and related instruments and equipment were used to integrate BK3560C data acquisition card and microphone to collect the noise during the operation of scroll compressor at different speeds and temperatures.The results show that when the rotating speed of scroll compressor is 30,70 and 110 r·s-1,the noise pressure ranges are±0.03,±0.30 and±0.50 Pa.At the same time,there is little difference in sound pressure level between the medium temperature and the low temperature,but the compressor noise sound pressure level in the medium temperature test environment is slightly higher than that in the low temperature environment.In order to reduce mechanical noise,the lubrication degree between mechanical structures can be increased on the premise of properly reducing the compressor speed.In addition,materials with low thermal expansion coefficient and high temperature resistance can be selected to manufacture the key components of the compressor,so as to reduce the change of fit clearance and friction noise caused by temperature change.
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