Abstract: In order to realize the accurate selection of the sound-absorbing cotton in the refrigerator mechanical room, improve the sound quality of the whole machine of the refrigerator, take four different materials as the research object, through theoretical analysis and transmission loss test, study the effect of different materials and thickness on the sound absorption coefficient of the material, and at the same time, through comparative analysis to clarify the difference siphoning performance of different sound-absorbing materials under the high speed operation of the refrigerator compressor, the results of the study provide a real and effective test case for the refrigerator mechanical room sound-absorbing cotton selection, and provide a valid test case for the refrigerator mechanical sound-absorbing cotton selection.

Key words: Refrigerator, Sound-absorbing cotton, Absorption coefficient, Soundproofing performance