The invention tumble dryer are installed at the entrance, the tumble dryer by controlling the air direction to be fed into the inlet fluid burner by the flame of the fluid burner hyeongsangreul controlled in accordance with the size of the aggregate to heat the aggregate accommodated in the inside of the tumble dryer size When the as relates to a variable turning to control the flame shape of the fluid burner to heat the other aggregate efficiently, thereby such a group variable turning actuator 8 rotates the second link arm 22 attached thereto the connecting rod 23, thereby the straight movement and rotation the wing 12 of the connecting rod 23 and connected to the angle ring 20 is rotated by the wind direction control (7). When the blade 16 in this manner is disposed in parallel to the air flow direction, rotary dryer (6) the resistance of the air supplied to the inside can be a minimum, when the blade 16 intersects at right angles to the air flow direction, air this is the maximum of the resistance.; Therefore, by using the actuator (8) according to the size of the aggregate, rotating the blades 12 at an angle to be able to control the flow of air selectively to control the shape of the flame generated in the fluid burner (B).
展开▼
