The rolling rotor type refrigeration compressor belongs to a rotary compressor, which realizes the cyclical change of the working volume by means of the rotary motion of the rotor in the cylinder, thereby performing gas compression. Compared with the reciprocating compressor, it has high volumetric efficiency, low vibration, no need for internal suspension support springs, and few components. Gradually replacing reciprocating compressors and widely used in household refrigeration equipment such as air conditioners to compare the performance of their typical products. Performance comparison of typical products of two rolling rotor compressors According to the national standard one, the main performance technical indexes of rolling rotor compressors are cooling capacity performance coefficient, input power, working current, motor winding temperature, housing temperature and noise, and their requirements are respectively The following measured cooling capacity should not be less than the nominal value of the coefficient of performance is not less than the measured input power and the operating current should not exceed the rated value of the motor winding temperature using the grade insulation should not exceed the shell temperature should not exceed the weighting) sound power level noise The value should be no more than normal. When measuring the performance of the compressor, the indicators that manufacturers and users pay more attention to are the cooling capacity coefficient of input power and noise. Performance comparison of rolling rotor compressors At present, the cooling capacity of typical products of window air conditioners and split wall air conditioners produced by various air conditioner manufacturers is concentrated in one. Therefore, it is necessary to select a rolling rotor type compressor with a corresponding cooling capacity. In addition, it can be seen from the table that the performance technical parameters of China's domestic rolling rotor compressors have reached or exceeded similar foreign products. According to our comparison of typical products of rolling rotor refrigeration compressors, the performance technical parameters of domestic rolling rotor refrigeration compressors have reached or exceeded the similar products in foreign countries. However, in order to meet the requirements of energy saving, consumption and comfort, the rolling rotor compressor still needs to continuously improve its performance, and develops toward high efficiency, energy saving, environmental protection, low noise and intelligent control.