Energy-saving refrigeration compressor assisted by differential pressure

The utility model discloses an energy-saving refrigeration compressor assisted by differential pressure. The compressor comprises a shell, a compressor body is fixedly connected to the top of the inner wall of the shell, a refrigerant return pipe is arranged on the left side of the compressor body, the left end of the refrigerant return pipe penetrates through the shell and extends to the exteriorof the shell, a refrigerant outlet pipe is arranged on the right side of the compressor body, and the right end of the refrigerant outlet pipe penetrates through the shell and extends to the exteriorof the shell. According to the utility model, the compressor main body, the refrigerant return pipe, the refrigerant outlet pipe, the compressor main shaft, the clutch, the motor, the refrigerant discharge pipe, the refrigerant inlet pipe, the first sealing ring and the second sealing ring are matched with one another; the pressure difference in the refrigerant working state is offset by the expansion valve or the capilla