Patent ID: 6338384
Filing Date: 2002-01-15
Classification: F25J,F28D,F28F,Y10S

Abstract:
A downflow reboiler-condenser comprising a plate fin type heat exchanger core containing a plurality of condensation passages and a plurality of evaporation passages formed alternately and successively in spaces defined by a plurality of parallel and vertical parting sheets, respectively, the reboiler-condenser carrying out indirect heat exchange via the parting sheets between a gaseous fluid to be condensed (condensing fluid) introduced from an upper lateral side of the condensation passages and a fluid to be evaporated (evaporating fluid) flowing down onto each evaporation passage to effect condensation of the condensing fluid into a liquid and also vaporization of the evaporating fluid into a gas;wherein the evaporation passages are each formed to have an upper end opening and a lower end opening; a reservoir communicating to the upper end opening of each evaporation passage is located above the heat exchanger core; liquid distributing means is located above each evaporation passage to distribute the evaporating fluid collected in the reservoir into the evaporation passage; and wherein the liquid distributing means is composed essentially of an easyway finning serving as an upper liquid inlet section, a hardway finning serving as an intermediate liquid distributing section and an easyway finning serving as a lower liquid leading section.