Flash evaporator

Claim 1

A FLASH EVAPORATOR COMPRISING, IN COMBINATION, A FIRST EVAPORATOR RAIL, A SECOND EVAPORATOR RAIL PARALLEL TO SAID FIRST RAIL, SAID RAILS EACH COMPRISING AN ELONGATED TANK, TRANSVERSE BULKHEADS ACROSS SAID TANK AT LEAST SOME OF WHICH FORM VAPORIZING COMPARTMENTS IN SAID TANK, TWO PARALLEL VERTICAL SIDE PLATES EXTENDING LONGITUDINALLY BETWEEN EACH PAIR OF TRANSVERSE BULKHEADS WITH THE LOWER EDGES OF THE SIDE PLATES DISPOSED WITH A SLIGHT CLEARANCE ABOVE THE LOWER INNER SURFACE OF SAID TANK, A DRAIN PLATE EXTENDING BETWEEN SAID SIDE PLATES AND EXTENDING BETWEEN SAID TRANSVERSE BULKHEADS, THE HIGHEST PORTION OF EACH OF SAID DRAIN PLATES BEING IMMEDIATELY ADJACENT THE FLUID ENTRANCE TO A COMPARTMENT AND SAID DRAIN PLATES SLOPING FROM THE UPPER EDGES OF SAID SIDE PLATES ADJACENT TO ONE OF SAID TRANSVERSE BULKHEADS TO THE LOWER EDGES OF SAID SIDE PLATES ADJACENT TO ANOTHER TRANSVERSE BULKHEAD, MEANS CONDUCTING HEATED FLUID UNDER THE DRAIN PLATE IN THE FIRST COMPARTMENT OF SAID TANK, MEANS CONDUCTION FLUID FLOWING DOWNWARD ON EACH DRAIN PLATE FROM THE LOWER EDGE OF EACH DRAIN PLATE TO UNDER THE DRAIN PLATE IN AN ADJACENT COMPARTMENT, AND MEANS CONDUCTING FLUID FLOWING DOWN THE DRAIN PLATE IN THE ENDMOST COMPARTMENT FROM THE LOWER EDGE OF SAID DRAIN PLATE OUT OF SAID TANK, A STEAM OUTLET FITTING LEADING FROM EACH OF THE COMPARTMENTS IN SAID TANK, A CONDENSER BETWEEN AND ABOVE SAID EVAPORATOR RAILS, SAID CONDENSER COMPRISING AN END TO END SERIES OF SECTIONS OF THE SAME LENGTH AS THE COMPARTMENTS IN SAID EVAPORATOR RAILS, CONDENSING TUBES EXTENDING LONGITUDINALLY THROUGH SAID SECTIONS, TUBE SHEETS SEPARATING SAID SECTIONS, A FIRST STEAM INLET FITTING ENTERING ONE END OF EACH OF SAID SECTIONS, AND A SECOND STEAM INLET FITTING ENTERING A CENTRAL PORTION OF EACH OF SAID SECTIONS, MEANS CONNECTING SAID STEAM OUTLET FITTINGS OF SAID FIRST RAIL TO SAID FIRST STEAM INLET FITTINGS OF SAIDCONDENSER, MEANS CONNECTING SAID STEAM OUTLET FITTINGS OF SAID SECOND RAIL TO SAID SECOND STEAM INLET FITTINGS OF SAID CONDENSER, AND MEANS MAINTAINING A PROGRESSIVELY GREATER DEGREE OF VACUUM IN SUCCESSIVE CONDENSER SECTIONS AND THE CONNECTED VAPORIZER COMPARTMENTS IN SAID RAILS.