PURPOSE: To compact a drying chamber for raw laver, by hanging a pair of endless chains on chain pulleys from one end to the other of a drying chamber vertically in parallel and turning them around the pulleys, by sending three-dimensionally drainboards attached laver while both the ends of hanging frames carrying the drainboards having attached laver being supported floatingly by a pair of the endless chains.

CONSTITUTION: In the drying chamber 1, the endless chains 8 set from one end to the other of the drying chamber are introduced in the vertical direction, so that the hanging frames 7 are sent while being introduced vertically. The floating chain pulleys 2 and the top drive chain pulleys 3a are not passed through shafts, supported by bearings respectively independently, and turn the directions of the vertical movement of the hanging frames. The bottom drive chain pulleys 3b are passed through bearings, fixed, and turn the hanging frames downwards. Hot air introduced into the drying chamber is made to flow between the hanging frames dropped downward vertically, so that the laver attached to the drainboards is dried.