Abstract: Through the analysis of the refrigerator performance and the technical parameters of the existing compressor under the new national standard, from the point of view of the compressor, variable frequency compressor with the wider speed is designed and the performance verification of the refrigerator is completed. The results show that the most efficient point is 1500~1800RPM for the wider speed compressor, which can better meet the requirements of the new GB Standard requirements for energy efficiency test, with the first level energy efficiency index. under the condition that the maximum COP of the original compressor is 2% lower, the performance of the refrigerator can still achieve the requirements of the new GB with the first level energy efficiency index. At the same time, the air-cooled refrigerator using the new compressor with lower cost can improve interiorly the market competitiveness.

Key words: The new GB, The wider speed compressor, The most efficient point, The air-cooled refrigerator with large volume