Desalination system
OwnerGeorge Atwellinventor
Life of this patent
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Abstract
In the preferred embodiment, a partition divides an upper chamber into an evaporating chamber and a condensing chamber with a fan in the partition transferring water vapor from the evaporating chamber into the condensing chamber. An external compressor or vacuum pump maintains the system at the desired negative pressure. A salt water intake extends upwardly from a source of salt water and into the evaporating chamber to form a pool therein. The condensed fresh water forms a pool in the condensing chamber which communicates via a vertical discharge column to a U type outlet at the base. An automatic blow down conduit extends from the base of the pool of the salt water in the evaporating chamber to discharge the heavily concentrated salt fraction of the salt water from time to time.
Claims22
A desalination system comprising in combination a sealed evaporating chamber, intake and return means for connection to a supply of salt water for circulating salt water to said evaporating chamber for evaporation, a sealed condensing chamber, conduit means operatively extending between said evaporating chamber and said condensing chamber for transferring water vapour from said evaporating chamber to said condensing chamber, an external vacuum pump operatively connected to one of said evaporating and condensing chambers and designed so as in operation to maintain said chambers at a pressure closely approaching the vapour pressure of water at ambient temperature, fresh water outlet means operatively connected to said condensing chamber, and means for condensing said water vapour in said condensing chamber said condensing means consisting of fan means for transferring water vapour through said conduit means from said evaporating chamber to said condensing chamber whereby said water vapour condenses without contacting a cooling medium.
Dependencies are inferred from the claim text.