provided to the front panel 21 and a door 15 is installed on the front side of the cabinet 10 to open close the opening 21 a an exhaust duct 30 is connected to the front panel 21 hence the interior of the drum 20 communicates via the exhaust duct 30 with an external environment with respect to the cabinet 10 a fan 40 for expelling the air in the drum 20 and a filter 35 filtering the air expelled by the fan 40 are provided within the exhaust duct 30 the fan 40 is rotated by a motor 50 provided within the cabinet 10 to rotate both the fan 40 and the drum 20 for this the motor 50 includes a pair of shafts respectively connected to the fan 40 and a pulley 60 connected to the drum 20 via a belt 65 though not specifically shown the motor 50 may rotate the fan 40 only an air inlet duct 70 is connected to the rear panel 23 to enable the inside of the drum 20 to communicate with an external environment as the fan 40 rotates to discharge the air within the drum 20 outside via the exhaust duct 30 external air is supplied into the drum 20 via the air inlet duct 70 a heater 80 is installed in the air inlet duct 70 to supply hot air into the drum 20 a laundry separator 100 according to the present invention is installed in the drum 20 the laundry separator 100 according to the.