DRAIN PROCESSING DEVICE OF AIR CONDITIONING MACHINE FOR VEHICLE

摘要

PURPOSE:To prevent an occupant from feeling any vehicle outer pressure fluctuation by providing a drain pipe having an opening/closing valve in the drain tank of an air conditioning machine so as to open the opening/closing valve in response to traveling speed. CONSTITUTION:A solenoid valve 13 is arranged to a tank drain pipe 12 provided at the bottom part of a drain tank 11 to storage drainage generated by an air conditioning machine. While the detected value of a speed sensor 14 is inputted in a solenoid valve opening/closing judgement means 15 in a solenoid valve controller 18, the solenoid valve 13 is opened/closed through an output power means 16 in such a way that the solenoid valve 13 is closed when the detected value becomes larger than set speed inputted from a set means 17 and opened when traveling speed becomes below set value. Therefore, vehicle external pressure fluctuation is not propagated inside a vehicle through the tank drain pipe 12 and a drain pan drain pipe 10 over speed that the vehicle external pressure fluctuation reaches a detrimental area so as to prevent to give an occupant any unplesant feeling.