Evaporator

Claim 1

AN EVAPORATOR COMPRISING A CYLINDRICAL SHELL TRANSVERSE PARTITIONS ACROSS THE INTERIOR OF THE SHELL DIVIDING IT INTO A LOWER BOILER CHAMBER, A MIDDLE SEPARATOR CHAMBER, AND AN UPPER VAPOR DOME, A CONSTANT LEVEL DEVICE FOR ADMITTING WATER INTO THE SEPARATOR CHAMBER, A VAPOR OUTLET FROM THE VAPOR DOME, A CONNECTION BETWEEN THE LOWER PORTIONS OF THE BOILER AND SEAPRATOR CHAMBERS, THE PARTITION BETWEEN THE VAPOR DOME AND THE SEPARATOR CHAMBER BEING FORMED OF A PERFORATED METAL PLATE AND AN INVERTED CONE BELOW IT, A PIPE EXTENDING DOWNWARDLY THROUGH SAID PLATES, SECURED TO THEM, AND PASSING ALONG THE AXIS OF THE SHELL INTO THE SEPARATOR CHAMBER, SAID PIPE BEING SUBSTANTIALLY CLOSED AT ITS BOTTOM AND HAVING A SIDE OPENING INTO THE SEPARATOR CHAMBER, A DRAIN PIPE BETWEEN THE INTERIOR OF THE INVERTED CONE AND AN UNDERWATER PORTION OF THE SEPARATOR CHAMBER, AND A THROTTLED VAPOR CONDUIT LEADING FROM THE TOP OF THE BOILER THROUGH THE SEPARATOR CHAMBER BELOW THE WATER LEVEL THEREIN, PASSING EXTERNALLY OF THE SHELL, AND RE-ENTERING THE SHELL TANGENTIALLY AT THE UPPER PORTION OF THE SEPARATOR CHAMBER.