| 摘要 |
PURPOSE:To prevent re-evaporation or generation of offensie smell of drain reserved in a drain pan by conducting the drain discharging device forcibly by a time limit relay for a predetermined period of time when the operation of the air conditioner is stopped. CONSTITUTION:The time limit relay T, operating for a given period of time after conduction, is connected to the contact (b) of an operation switch SW controlling the air conditioner. A drain pump motor PM, constituting the drain discharging device, is connected to an electric source in series with a float switch Fs, being connected or disconnected in accordance with the level of the drain Y in the drain pan D, while the contact Ta of the time limit relay T is connected in parallel with the float switch Fs. When the operation switch SW is being connected to the contact (b), voltage is not impressed on a solenokd contacter 52C for a compressor and the compressoris stopped. In this case, when the voltage is impressed on the time limit relay T and the contact Ta is closed, the voltage is impressed on the drain pump motor PM and the discharging operation is effected for a predetermined period of time to discharge the drain forcibly in spite of the operation of the float switch Fs. Accordingly, the forced discharging of the drain is effected upon every stopping of the operation, therefore, the re-evaporation or generation of offsensive smell of the drain may be prevented. |
