Flash evaporation and condensation apparatus

Claim 1

A FLASH EVAPORATOR COMPRISING A VERTICAL CYLINDRICAL OUTER SHELL WITH A CONICAL BOTTOM AND A REMOVABLE CONICAL TOP, MEANS FOR MAINTAINING PARTIAL VACUUM IN THE BODY OF THE EVAPORATOR, A BASE HEAT EXCHANGER CONSISTING IN GENERAL OF AN INNER CONE CONCENTRIC WITH THE COINCAL BOTTOM AND SEPARATED FROM IT BY A CONICAL SPRIAL STRIP DRAPED OVER SAID INNER CONE AND WELDED TO IT FOR THE PURPOSE OF GUIDING THE HOT DISTILLATE COLLECTED FROM EVAPORATOR STAGES OPERATING AT HIGHER TEMPERATURES IN A SPIRAL COURSE BETWEEN THE TWO CONCENTRIC CONES OF THE BASE HEAT EXCHANGER TO ENSURE AN EFFECTIVE HEAT TRANSFER TO THE RESIDUAL LIQUID IN THE BODY OF THE FLASH EVAPORATOR, A CONDENSER SUSPENDED JUST BELOW THE CONICAL TOP AND CONSISTING OF A METAL PIPE BENT IN THE SHAPE OF A CONICAL SPIRAL HAVING ITS INLET AND OUTLET ENDS EXTENDED THROUGH SAID CONICAL TOP, OPEN SIPRAL-SHAPED THROUGH MEANS DISPOSED BENEATH THE CONICAL SPIRAL-SHAPED CONDENSER PIPE FOR COLLECTING DISTILLATE, A FUNNEL-SHAPED MEANS DISPOSED NEATH SAID CONDENSER AND COMMUNICATING WITH SAID TROUGH FOR THE REMOVAL OF COLLECTED DISTILLATE FROM THE EVAPORATOR, A FLASH TUBE THROUGH WHICH HOT LIQUID IS INTRODUCED INTO THE BODY OF THE EVAPORATOR UNDER FORCE OF THE RELATIVE VACUUM MAINTAINED IN THE FLASH EVAPORATOR AND DESIGNED TO UTILIZE THE FALL IN VAPOR PRESSURE OF THE HOT LIQUID TOGETHER WITH THE EXPANSION UNDER VACUUM OF ITS VAPOR BOTH EFFECTIVE OVER THE LENGTH OF THE FLASH TUBE TO IMPART MOMENTUM TO THE VAPOR AND ITS ENTRAINED RESIDUAL LIQUID WITH THE PURPOSE OF SETTING UP AND SUSTAINING A SWIRLING MOTION IN BOTH VAPOR PHASE AND THE RESIDUAL LIQUID IN THE BODY OF THE FLASH EVAPORATOR.