US PATENT SUBCLASS 159 / 27.4
.~.~.~.~ Downflow

Current as of: June, 1999
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159 /   HD   CONCENTRATING EVAPORATORS

22  DF  CLOSED EVAPORATING CHAMBERS {4}
23  DF  .~ Indirectly heated {4}
26.1  DF  .~.~ Heated tube {2}
27.1  DF  .~.~.~ Vertical {4}
27.4.~.~.~.~ Downflow

DEFINITION

Classification: 159/27.4

Downflow:

(under subclass 27.1) Apparatus wherein the fluid flows downwardly contrary to the material thermosphonic flow of the heated liquid.