Patent ID: 6428656
Filing Date: 2002-08-06
Classification: B01D,C02F

Abstract:
A water-cooled distilling apparatus for forming purified water from raw water, said water-cooled distilling apparatus comprising:a boiler for containing said raw water therein; a self-regulating screen movable within said boiler, said raw water covering said screen when said raw water is cooler than the boiling temperature of water and said screen rising through said raw water to the surface of said raw water as said raw water begins to boil, said self-regulating screen including a central portion and a sidewall portion extending downwardly therefrom and substantially about the perimeter of said central portion, said sidewall portion extending from said central portion through the surface of and into said raw water when said raw water is boiling, said central portion of said self-regulating screen floating above said raw water at a height proportionate to the rate of boil, said central and sidewall portions of said self-regulating screen providing surface area for a water film to form thereon so that steam forms from and rises from said water film; said self-regulating screen being dimensioned to cover substantially all of the exposed raw water so that any particles of said raw water are prevented from passing by said self-regulating screen and becoming entrained in and contaminating the steam rising from the screen; and a cooling tray assembly placed over said boiler and said self-regulating screen, said cooling tray assembly having at least one coolant water reservoir and at least one distillate collection tray so that steam rising from said self-regulating screen condenses on the bottom surface of said coolant water reservoir forming said purified water, said purified water dripping onto and being collected by said distillate collection tray.