Evaporative condensing coil and double-pipe condensing heat exchanger

The utility model discloses an evaporative condensing coil and a sleeve type condensing heat exchanger. The evaporative condensing coil comprises a first pipeline, a second pipeline, a first header pipe and a second header pipe, the first pipeline and the second pipeline are both of a corrugated structure, inlets of the first pipeline and the second pipeline are both connected with an outlet of the first header pipe, and an inlet of the first header pipe is connected with a refrigerant inlet; an outlet of the first pipeline and an outlet of the second pipeline are both connected with an inlet of the second header pipe, and an outlet of the second header pipe serves as a refrigerant outlet. The corrugated inner tube is arranged in the coil tube pass in a mode of associating the upper layer and the lower layer, so that the heat exchange area is increased, and the heat exchange effect is improved. 本实用新型公开了一种蒸发式冷凝盘管及套管式冷凝换热器，所述蒸发式冷凝盘管包括第一管道、第二管道、第一总管和第二总管；所述第一管道和第二管道均为波纹结构，所述第一管道和第二管道的入口均与所述第一总管的出口连接，所述第一总管的入口连接制