Research on noise optimization of light commercial refrigeration compressor
ZHOU Hui
YANG Fengyu
GUO Xiaoxing
ZHANG Yongkang
JIANG Lai
Abstract：Research focuses on the noise of light commercial refrigeration compressors.By comparing the noise spectrum and frequency modes of the shell,the direction for improving noise level of a certain frequency is identified.By Testing and comparing the noise spectrum,shell mode and the frequency results of the A-23cc compressor,the frequency of 2500 Hz was selected as the noise optimization target.In response to the characteristic of the highest excitation amplitude of 2600 Hz in the shell mode,which directly affects the overall noise of 2500 Hz,the shell will be changed as the improvement target.By moving the position of the shell welding strip downwards,the modal excitation peak of the shell was shifted from 2600 Hz to 2800 Hz,thereby reducing the impact on the noise spectrum of 2500 Hz.Compared with the results of the overall noise test before and after the improvement of the shell mode,the noise at 2500 Hz decreased by 6.1 dB(A),and the compressor overall noise decreased by 3.0 dB(A).
Keywords：Light commercial refrigeration compressorNoise optimizationFrequency and vibration mode
Publication Date：2025-04-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 42-44,56 )