Abstract: The refrigerator compressor is one of the most important components in the refrigerator cooling system, and it is also the main source of noise in the refrigerator system. To improve the noise problem of the refrigerator system, both the compressor itself and the refrigerator system need to be optimized. Therefore, it is especially important to study the transmission path of the refrigerator system. In order to seek methods to reduce compressor noise and optimize compressor structure design, it is necessary to analyze the two important transmission paths of noise in the refrigerator system, structural and air transmission paths. The matching relationship between the compressor and refrigerator system, as well as the formation mechanism and control methods of the two propagation paths, were investigated to support the subsequent optimization and improvement of refrigerator system noise. Through TPA transmission path analysis, the noise contributions of the five paths were investigated, and the evaluation results of the contribution of each transmission path were ranked.

Key words: Refrigerator system noise, Transmission path, Structural transmission, Air transmission