| 摘要 |
<P>PROBLEM TO BE SOLVED: To remove dust in a returning cylinder since it is often contained in exhaust air and sometimes remains in the returning cylinder in an exhaust air circulation type grain drier. <P>SOLUTION: The grain drier includes a drying chamber (2) in which dried air generated by a combustion burner (7) is made to act on grains, an exhaust air fan (6) which exhausts the dried air to the outside of a machine, a returning cylinder (27) which returns the exhaust air exhausted by the exhaust air fan (6) to the drying chamber (2), and an exhaust air regulating body which regulates a rate of the exhaust air to be guided to the returning cylinder (27) side to the exhaust air to be exhausted to the outside of the machine. In addition, the grain drier carries out a dust removal step of driving the exhaust air fan (6) after the stop of the combustion burner (7) and regulating the exhaust air regulating body so as to increase the rate of the exhaust air to be returned to the inside of the returning cylinder (27) and then stops the exhaust air fan (6). <P>COPYRIGHT: (C)2013,JPO&INPIT |
