Automatic control draining device and a humidifier using the same

摘要

An automatic control draining device, which is disposed in a sink, includes a float chamber, fixed in the sink and having a lower portion in communication with the sink; a floater, disposed in the float chamber and provided with a first valve stem at an upper end thereof; and a first valve seat, disposed above the float chamber and having a drain outlet formed at an upper portion thereof and a concave surface formed at a lower portion thereof, wherein the concave surface is in communication with the drain outlet; when the floater floats up in the float chamber, an end of the first valve stem contacts the concave surface to form a sealing fit. The draining device moves up and down with the level of water to drive the first valve stem to contact or separate from the concave surface to control the level of water in the sink.