| 摘要 |
PURPOSE:To suppress after-push after reaching a set temperatue, to the minimum, by dividing a radiator into several stages, and separately controlling the radiator in accordance with heat capacity. CONSTITUTION:A cloth drying machine is provided with plural radiators 10, 11 and 12 in order to heat air and flow it into a drying drum 9. At first, air is heated up to a set temperature by use of all the radiators 10, 11 and 12. When it reaches a prescribed temperature, heating using the radiators 10, 11 and 12 is stopped by closing vapor valves 19, 20 and 21, and the time required for falling to the set temperature is measured. The time required for falling is measured by a microcomputer, and in case when the time is short, heating is executed again by use of all the radiators 10, 11 and 12. In case when the time is long, the number of radiators is decreased in accordance with the time. In this way, the after-push time can be minimized by controlling a heating value in accordance with heat capacity. |
