PURPOSE: To enhance solvent recovering efficiency, to prevent the temp. rise in a room and to reduce the noise in the room by providing a condenser to the cooling chamber of a solvent recovering and circulating passage and arranging the freezing compressor allowed to communicate with the condenser of the cooling chamber and compressing freezing gas to supply the same to the condenser outdoors.

CONSTITUTION: A drying drum 3 is arranged in a drying chamber 2 and an exhaust passage 7 is allowed to communicate with the exhaust port 5 of the drying chamber 2 to arrange a blower 6 to the exhaust passage 7. A suction passage 9 is allowed to communicate with the suction port 8 of the drying chamber 2 and a heating chamber 12 is provided to the suction passage 9 and a cooling chamber 15 is provided between the exhaust passage 7 and the suction passage 9 to be connected to both passages. A solvent recovering passage 16 is allowed to communicate with the cooling chamber 5 and a solvent recovering and circulating passage 26 is formed from the drying chamber 2, the exhaust passage 7, the suction passage 9 and the cooling chamber 15. A condenser 14 is provided to the cooling chamber 15 and a freezing compressor 28 is arranged outdoors and freezing gas is compressed by the freezing compressor 28 to be supplied to the condenser 14. By this constitution, solvent recovering efficiency can be enhanced and the temp. rise in the room in which a dryer is arranged can be prevented.