Method and apparatus for producing steam and uses of same.

摘要

A steam generator has a plurality of vertically oriented boiling chambers. Feed water enters the top chamber and cascades down through drain tubes to the lower chambers. The bottom chamber has a drain to remove excess feed water. Each chamber has a feed water reservoir in which an electrical coil causes gentle boiling. The steam produced in each chamber is substantially free of droplets and is allowed to rise to the top chamber through steam passageways. A steam outlet in the top chamber allows the steam to be released for use in semiconductor wafer cleaning systems and other applications requiring pure steam. The steam generator may be formed by stacking modular units together.