JPS56127130A - Vacuum type drain discharging device for air conditioner - Google Patents

Abstract

PURPOSE:To perform the stable discharge of drain in an air conditioner by discharging the drain produced at the cooling coil of the air conditioner for cooling and heating a building when the level of the drain accumulated in a drain reservoir is raised to a predetermined level. CONSTITUTION:This drain discharging device is used by connecting a drain inflow tube 29 to a drain pan of the air condition (not shown) and connecting the connecting port 41 of the drain suction tube 35 to a vacuum pump. The drain is flowed from the tube 29 through inflowing holes 39, 40 into a drain reservoir 20. The reservoir 20 is lifted with lifting force consisting of the urging force of a spring 34, attracting force between the magnet 33 of an inner tube 31 and the magnetic material 26 of a middle cover 25 and suction force between the suction port 38 due to vacuum from the port 41 and a valve seat 24 until the quantity of the inflow drain reaches predetermined value, and the port 38 is covered with the valve seat 24. When the level of the drain reaches thereafter a predetermined height, the reservoir 20 is dropped, and the drain is suctioned and discharged through the port 41 from the port 38.