Absorber for absorption refrigerator, heat exchange unit for absorption refrigerator, and absorption refrigerator

An absorber (3) for an absorption refrigerator is provided with a first container (31a), a first heat transfer tube group (32a), a first dropper (5a), a second container (31b), a second heat transfer tube group (32b), and a second dropper (5b). The first dripping device (5a) drips the first absorption liquid (30a), which has passed through each of the plurality of first openings (56a), toward the first heat transfer tube group (32a). The second dropper (5b) has a plurality of second openings (56b). The plurality of second openings (56b) are arranged along the longitudinal direction of the second heat transfer pipe (32q). The second dripping device (5b) drips a second absorption liquid (30b), which includes at least all or part of the first absorption liquid (30a) dripped by the first dripping device (5a) and has passed through each of the plurality of second openings (56b), toward the second heat transfer tube group (32b). The absorber (3) satisfies A2/L2lt; and A1/L1.