This utility model relates to the technical field of liquid film distribution devices for falling film evaporators, and in particular to a liquid film distribution device for falling film evaporators. By incorporating a flow-slowing device, the device can slow down the liquid flow rate during film distribution, preventing liquid film breakage and improving the film distribution effect. Furthermore, by incorporating an overflow film distribution device, the device can overflow when the liquid flow rate is too high, preventing the liquid from completely filling part of the heat exchange tubes and further improving the film distribution effect. The device includes an overflow film distribution device, a flow-slowing device, and multiple film distribution rings, all mounted on the overflow film distribution device. The overflow film distribution device distributes the liquid and overflows when the liquid flow rate is too high, the flow-slowing device slows down the liquid flow rate, and the film distribution rings reduce the occurrence of liquid film breakage.
