Cold/hot water dispenser having an expansion tank for water overflow

摘要

A water dispenser includes a storage tank for receiving purified water, and supplying the water to hot and cold water tanks disposed beneath the storage tank. Dispensing valves are connected to the hot and cold water tanks for dispensing water therefrom. A water level detector is provided for maintaining a water level in the storage tank at a predetermined first elevation. An expansion tank has an outlet and inlet situated at a second elevation disposed above the first elevation. The inlet of the expansion tank communicates with the top of the hot water tank so that the presence of water in the storage tank situated above the second elevation forces water to flow from the hot water tank and through the expansion tank. Also, excess water in the hot water tank caused by thermal expansion is forced through the expansion tank.