The operating principle and structure characteristics of an innovative synchronal rotary refrigerating compressor developed were analyzed

and the moving law of the key parts of the compressor was deduced. Moreover

numerical calculation was performed for a refrigeration prototype on the basis of the motion analysis. The calculation results show that the average relative velocity between the cylinder and the rotor is 2.62 m/s

which is decreased by 79.16% and 76.83% respectively compared with that of a rolling piston compressor and a vane compressor with the same parameters. The average relative velocity between the vane and the rotor is 0.80 m/s

which is decreased by 92.93% and 93.64% respectively compared with that of the rolling piston compressor and the average relative velocity between the vane and the cylinder of the vane compressor. The relative velocity between the moving parts of the synchronal rotary refrigerating compressor is very small

leading to less frictional wear of the moving parts

higher efficiency of the compressor and longer operating life of the parts.