Abstract: Refrigerator refrigerant noise, as the unique noise of the refrigeration system, is one of the important noise concerns in the user's daily use. By introducing an acoustic camera and establishing an analysis system combining noise and vibration based on acoustic positioning tests, a rapid and accurate analysis is achieved. Refrigerator refrigerant noise positioning test, and the correlation between refrigerant noise and pipeline vibration is clarified through the test data and related mechanism analysis. The refrigerator refrigerant noise is optimized by reducing the capillary tube vibration method, and the theoretical analysis is verified by the experimental verification. It has a good effect and provides a design basis for the optimization of refrigerant noise in the subsequent refrigerator development process.

Key words: Refrigerator, Acoustic positioning, Refrigerant noise, Experimental verification