Refrigerator with machine room condenser and air return pipe anti-condensation control method

The invention discloses a refrigerator with a machine room condenser and an air return pipe anti-condensation control method.The refrigerator comprises a compressor, the condenser, a condensation fan, an evaporator, a capillary tube and an air return pipe, the condenser and the compressor are installed in a compressor room, and the condensation fan promotes the condenser to be cooled in a forced convection mode; the air conditioner is characterized in that a temperature sensor and a humidity sensor are arranged in the compressor bin and electrically connected with the main control board, and the main control board outputs voltage adjusting signals to control the rotating speed of the condensate fan. Aiming at the phenomenon that condensation is easily caused by low temperature of an air return pipe due to low temperature of a capillary tube of an existing machine room condenser refrigerator with high heat dissipation efficiency, the condensation temperature is controlled within a certain value range by adopti