Double effect absorption refrigeration machine

Claim 1

IN AN ABSORPTION REFRIGERATION MACHINE COMPRISING A FIRST GENERATOR AND A SECOND GENERATOR ARRANGED SO THAT REFRIGERANT VAPOR FROM THE FIRST GENERATOR AND REFRIGERANTABSORBENT SOLUTION FROM THE FIRST GENERATOR PASS IN HEAT EXCHANGE RELATION WITH ONE ANOTHER IN THE SECOND GENERATOR TO RELEASE ADDITIONAL REFRIGERANT VAPOR FROM THE SOLUTION: THE IMPROVEMENT COMPRISING THE FORMATIION OF THE FIRST GENERATOR AS A FIRST HORIZONTAL SOLUTIION SHELL HAVING A SERIES OF HORIZONTAL FIRETUBES LOCATED BELOW THE SOLUTION LEVEL; SAID SECOND GENERATOR COMPRISING A SECOND HORIZONTAL SHELL, AND A SERIES OF HEAT EXCHANGE TUBES EXTENDING WITHIN THE SECOND SHELL BELOW THE SOLUTION LEVEL IN THE FIRST SHELL; MEANS FOR PASSING REFRIGERANT VAPOR FROM THE FIRST GENERATOR INTO THE SECOND GENERATOR TUBES; CONDUIT MEANS FOR GRAVITATIONALLY PASSING LIQUID REFRIGERANT-ABSORBENT SOLUTION FROM THE FIRST SHELL INTO THE SECOND SHELL AND OVER THE OUTER SURFACES OF THE SECOND GENERATOR HEAT EXCHANGE TUBES TO RELEASE REFRIGERANT FROM THE SOLUTION; MEANS FOR RECEIVING CONDENSED REFRIGERANT FROM THE SECOND GENERATOR TUBES COMPRISING A FIRST CHAMBER LOCATED AT THE OUTLET ENDS OF THE TUBES, A SECOND CHAMBER, AND A RESTRICTED PASSAGE BETWEEN THE FIRST AND SECOND