| 摘要 |
PURPOSE:To make a rapid drying of a dew condensation sensor and to prevent a freezing action by a method wherein the dew condensation sensor is arranged in an air discharging passage and a blower is driven for a specified period of time after the blower is operated and a removal of the dew condensation is detected. CONSTITUTION:A dew condensation sensor 17 is arranged in an equipment storing box 40 installed in a casing 2 in such a way as it may be adjacent to an air discharging passage 5. When water vapor is generated in a room C, a phenomenon of dew condensation appears at the portions facing to the room C including the dew condensation sensor 17 and a partition wall A. The dew condensation sensor 17 detects the dew condensation and transmits a signal to a timer circuit 32 to operate a blower 8 after a specified period of time elapses. With this arrangement, the dew condensed part is dried and a dew condensation signal is not outputted, a total output time of the dew condensation signal is measured by the timer circuit 32, the blower 8 is driven for a time in which the output time is multiplied by a specified multiplier and an air blowing action is continued. With this operation, it is possible to provide a positive removal of dew condensation at the partition wall A and the sensor part. |
