Abstract: At present, the high-frequency noise problem of refrigerator compressor is prominent, and the poor hearing of high-frequency noise is easy to cause user complaints. It is urgent to identify the high-frequency noise problem of refrigerator compressor and optimize it. In view of the high-frequency noise problems that are easy to occur in the current refrigerator compressor, takes a certain type of fixed-speed compressor as an example to study the noise source and transmission path. The high-frequency noise problems such as 2500 Hz, 4000 Hz and 5000 Hz of a certain type of fixed-speed compressor are deeply analyzed and optimized. The test results show that the optimization scheme can significantly improve the high-frequency noise problem, which provides relevant ideas and theoretical basis for the improvement of the high-frequency noise problem of the refrigerator compressor, and has certain guiding significance for the subsequent product design.

Key words: Refrigerator compressor, High frequency noise, Noise source, Transfer path