| abstract |
A heat pump type hot air dryer is provided. The dryer includes a refrigerant cycle apparatus including a compressor, a condenser, an expansion valve, an evaporator, and a refrigerant circulation line. The dryer includes an air circulation line for circulating the dry air in the drying chamber while passing through the condenser, and an air circulation device installed on the air circulation line and including a circulation fan for forcedly circulating the dry air. A heater is installed on the air circulation line, and the controller controls the refrigerant cycle device and the heater to be selectively driven. |