Abstract: An absorption refrigerator includes a generator for separating, by vaporization, a refrigerant from an absorption solution, a condenser for liquefying by condensation the vaporized refrigerant, an evaporator for vaporizing the liquefied refrigerant from the condenser by heat exchange with a heat medium, and an absorber for absorbing the vaporized refrigerant to react against the absorption solution to be supplied from the generator. The evaporator has heat exchanger pipes disposed in the vertical direction and refrigerant discharge nozzles for discharging the refrigerant toward the inner walls of the heat exchanger pipes. Each of the refrigerant discharge nozzles is arranged at a position displaced downward by a predetermined distance from the upper end of each of the heat exchanger pipes.