초록 ▼

A water purification apparatus capable of treating water having impurities producing substantial foaming includes a boiler tank having a water inlet and heater, and a stack portion thereabove containing contact surface means and a heater for heating the contact surface means to a temperature above t

A water purification apparatus capable of treating water having impurities producing substantial foaming includes a boiler tank having a water inlet and heater, and a stack portion thereabove containing contact surface means and a heater for heating the contact surface means to a temperature above the vaporization temperature of water. In this manner water droplets which may be carried by the steam vapors from the boiler and/or foam will be immediately vaporized as it comes in contact with the contact surface means. The steam vapors pass through a condenser assembly, and the condensate passes through a filter assembly before storage in a tank. The contact surface means desirably comprises screen members providing a tortuous path and high heat conductivity. Baffle members may be interposed in the flow path for vapors from the boiler tank to the stack. Valves and a control circuit are desirably included to automatically control the volume of water in the boiler, to cut off water flow to components and to drain the assembly upon shutdown.

대표청구항 ▼

In a water purification apparatus, the combination comprising: A. a boiler assembly having 1. a water-boiling tank portion and 2. a vapor receiving and conducting portion thereabove, said tank portion including a first chamber, a water inlet into said chamber and heating means adapted to heat water

In a water purification apparatus, the combination comprising: A. a boiler assembly having 1. a water-boiling tank portion and 2. a vapor receiving and conducting portion thereabove, said tank portion including a first chamber, a water inlet into said chamber and heating means adapted to heat water in said chamber to the boiling point and produce vaporization thereof, said vapor-receiving and conducting portion including a. a second chamber therewithin, b. contact surface means occupying substantially the entire transverse dimension of at least a portion of the length of said second chamber and c. heating means for heating said contact surface means to a temperature substantially above the vaporization temperature of water to effect vaporization of water particles which may come into contact therewith, said boiler assembly including a passage between said first chamber and said second chamber for passage of vapors from said first chamber to said second chamber; B. a condenser assembly connected to said vapor-receiving and conducting portion for receiVing vapors passing therethrough and providing indirect heat exchange contact between the vapors and a cooling medium; C. a filter assembly connected to said condenser assembly for receiving condensate therefrom and effecting filtration thereof; and D. storage tank means for receiving filtrate from said filter assembly.