PURPOSE: To prevent an operation of an implement from being stopped in a semidry state, and also, to prevent an overheat state by providing a control means for reducing a feed air heating degree in a heating chamber, wherever a detected temperature of a temperature sensor become a set temperature.
CONSTITUTION: A controller C using a microcomputer is provided with a controller C0 for controlling drying and heating at a usual time after an operation is started, and a control means C1 for preventing overheat caused by a fact that clogging advances by sticking of waste thread, etc., to a filter device 50. Also, in the vicinity of the downstream end of a feed air circuit 4, a temperature sensor S1 for detecting a feed air temperature is provided, and an output from this temperature sensor S1 is inputted to the control means C1. That is, a heating degree of a gas burner 42 incorporated in a heating chamber 41 contained in the feed air circuit 4 is controlled by the control means C1, a temperature in a rotary drum 10 is maintained at a prescribed temperature, and also, at the time point when an object to be dried is dried to a prescribed drying degree, a drying operation is stopped by the controller C by a detection output of an electrode sensor.
KAWAMOTO MASAYUKI
SUGIMOTO WAKIJI
YAMAOKA TAMOTSU
TSUJIMOTO YOSHIMI
NAGAYA KATSUHIKO
