Patent ID: 7610697

Claim:
An automatic draining apparatus of condensation of an air conditioner or a dehumidifier comprising: a water tank for holding condensation; a float floating on the surface of the condensation and moving up/down along the level of the condensation; a hydraulic pressure chamber consisting of a hollow room and a check valve, the hollow room having a volume changeable area for containing the condensation, the check valve provided at an inlet of the hydraulic pressure chamber, and the check valve allowing the condensation to flow only into the hollow room, the hydraulic pressure chamber being placed on the bottom of the water tank, the float moving up along the rising of the condensation and pulling up the hydraulic pressure chamber so that the volume of the hollow room is reduced and the condensation of the hollow room is pressurized; and a siphon having an inlet connected to the hydraulic pressure chamber and the inlet being functioned as an outlet of the hydraulic pressure chamber, and an outlet being provided at outside and a level of the outlet placing at a lower level of the inlet, the siphon draining the condensation in the water tank into the outside when the siphon is filled with the condensation by the condensation discharge from the compressed hydraulic pressure chamber.