Refrigeration dryer

The utility model discloses a refrigeration dryer. The air conditioner comprises a precooler, a heat exchanger and an evaporator, the precooler is connected with the heat exchanger, the heat exchangeris connected with the evaporator, and the air conditioner is characterized in that a compressed air inlet is formed in the precooler, a temperature sensor is installed at the compressed air inlet, and the temperature sensor and the precooler are electrically connected with a controller. The utility model has the advantages of energy conservation and wide application range. 本实用新型公开了一种冷干机，包括预冷器、换热器和蒸发器，所述预冷器与所述换热器连接，所述换热器与所述蒸发器连接，其特征在于：所述预冷器上设有压缩空气入口，在压缩空气入口安装温度传感器，所述温度传感器和所述预冷器与控制器电连接。本实用新型具有节能，适用范围广。