Cascade refrigeration compound evaporative absorber

Abstract

The utility model discloses a kind of composite evaporation absorbers of step-by-step refrigeration in the technical field of refrigeration equipment, comprising: fixed tube sheet heat exchanger;Fixed tube sheet heat exchanger is equipped with baffle, the baffle is used to split the inner cavity of fixed tube sheet heat exchanger into low-pressure evaporation cavity, low-pressure absorption cavity, middle-pressure absorption cavity and middle-pressure evaporation cavity;In the application, middle-pressure evaporation cavity first utilizes cold source to preliminarily cool heat transfer medium, low-pressure evaporation cavity is cooled again to heat transfer medium by using the remaining cold source discharged from middle-pressure evaporation cavity, replace single-stage refrigeration by step-by-step refrigeration, solve the problem that cost is too high due to equipment is too large in single-stage refrigeration, reduce the transportation cost of equipment.

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