초록 ▼

A water purification apparatus positionable on an existing dispenser has a valve control member positionable in the water plenum of the dispenser to control release of purified water from the apparatus to the dispenser. A feedwater tank receives supply water which is fed to a water level control tan

A water purification apparatus positionable on an existing dispenser has a valve control member positionable in the water plenum of the dispenser to control release of purified water from the apparatus to the dispenser. A feedwater tank receives supply water which is fed to a water level control tank to maintain the water level in the boiler of the apparatus above the heating element. The control tank includes a partition separating a main reservoir from a de-foamer control chamber within which anti-foaming agent may be added. A condenser is coiled into a number of convolutions about a central opening and has external heat exchanger fins. An end cap assembly closes the central opening except for a small portion through which air is blown by a fan so that substantially all of the air flows over the fins. The boiler is a cylindrical container having a peripheral lip about an open end on which a lid having a steam outlet tube is positioned. The lid is secured in sealing relationship with the lip by a coil spring urged by a bar having clamps which grasp the peripheral lip.

대표청구항 ▼

Water purification apparatus comprising a feedwater tank for receiving water to be purified, an upstanding boiler having an electrical heating element disposed therein adjacent a lower end for boiling water, a water level control tank having a water reservoir communicating said feedwater tank to sai

Water purification apparatus comprising a feedwater tank for receiving water to be purified, an upstanding boiler having an electrical heating element disposed therein adjacent a lower end for boiling water, a water level control tank having a water reservoir communicating said feedwater tank to said boiler, means for mounting said feedwater tank relative to said water reservoir such that when water within said feedwater tank is above a preselected level there is water in said reservoir, valve control means in said control tank for controlling the level of water in said reservoir from exceeding a predetermined level, means for mounting said control tank at an elevation wherein said predetermined level is above said heating element, whereby said heating element is submerged in water in said boiler, a chamber associated with said level control tank for storage of an anti-foaming agent for limiting formation of foam in said boiler, means for dispensing a controlled amount of anti-foaming agent from said chamber to said reservoir, a condenser for receiving steam from said boiler and for condensing said steam to form distilled water, a distillate tank, means communicating said condenser with said distillate tank for supplying distilled water to said distillate tank, and means for dispensing water from distillate tank selectively.