Patent ID: 6318000
Filing Date: 2001-11-20
Classification: F26B

Abstract:
A circulating type grain drying machine comprising:a heating section for heating grains equipped with a plurality of heating pipes through which heated air from a first heated air generating means passes;a drying section arranged under said heating section, for drying grains by supplying heated air having passed through each heating pipe together with heated air from a second heated air generating means;an air exhaust means for sucking the heated air of said drying section and exhausting said heated air to outside the drying machine;an exhaust airflow control section for controlling the amount of exhaust air of said air exhaust means;an outside air humidity detection means for detecting an outside air humidity; anda control means electrically connected to each of said first heated air generating means, said second heated air generating means, said exhaust airflow control section, and said outside air humidity detection means,said control means causing, during the grain filling operation, said first heated air generating means to operate and at the same time said second heated air generating means to stop to operate, and said exhaust airflow control section to operate according to the detected outside air humidity value detected by said outside air humidity detection means and to change the exhaust airflow of said air exhaust means.