Generator construction for absorption refrigeration machines

Claim 1

AN ABSORPTION REFRIGERATION MACHINE COMPRISING: (A) AN EVAPORATOR FOR EVAPORATING REFRIGERANT TO PRODUCE COOLING; (B) AN ABSORBER FOR ABSORBING REFRIGERANT VAPOR FORMED IN SAID EVAPORATOR; (C) A CONDENSER FOR CONDENSING REFRIGERANT VAPORIZED FROM WEAK SOLUTION; AND (D) A GENERATOR FOR BOILING WEAK ABSORBENT SOLUTION TO CONCENTRATE THE ABSORBENT SOLUTION AND TO FORM VAPOR, SAID GENERATOR COMPRISING: (1) AN EXTERIOR SHELL MEMBER, (2) AN INTERIOR SHELL MEMBER, SAID INTERIOR SHELL BEING DISPOSED WITHIN SAID EXTERIOR SHELL AND SPACED FROM THE SIDE THEREOF TO FORM A FLUE GAS PASSAGE BETWEEN SAID SHELLS, AND SAID INTERIOR SHELL HAVING A HOLLOW INTERIOR PORTION DEFINING A COMBUSTION CHAMBER, SAID COMBUSTION CHAMBER BEING IN COMMUNICATION WITH SAID FLUE GAS PASSAGE BETWEEN SAID SHELLS SO THAT COMBUSTION PRODUCTS FROM SAID COMBUSTION CHAMBER ARE DISCHARGE INTO THE FLUE GAS PASSAGE BETWEEN SAID SHELLS, (3) A GENERATOR HEAT EXCHANGE COIL DISPOSED BETWEEN SAID SHELLS IN SAID FLUE GAS PASSAGE, SAID HEAT EXCHANGE COIL BEING CONNECTED TO PASS ABSORBENT SOLUTION THERETHROUGH, (4) MEANS TO ADMIT GAS INTO SAID COMBUSTION CHAMBER, AND (5) MEANS TO ADMIT AIR INTO SAID COMBUSTION CHAMBER INCLUDING MEANS TO CAUSE SAID AIR TO ROTATE ABOUT THE AXIS OF SAID COMBUSTION CHAMBER TO PROMOTE MIXING WITH GAS AND TO PROVIDE EFFICIENT COMBUSTION THEREIN.