Vertical falling film evaporator provided with novel liquid division device

The invention belongs to the field of energy-saving utilization of efficient heat exchangers and provides a vertical falling film evaporator provided with a novel liquid division device. The vertical falling film evaporator comprises an evaporator upper end, an evaporator main body part and an evaporator lower end. Water passes through the upper end of the evaporator; the evaporator main body part comprises refrigerant liquid inlet flute-shaped pipes which are arranged in a layered and parallel mode, novel liquid distribution trays and the like, the main body is internally provided with a proper refrigerant distributor, the refrigerant can be uniformly distributed on the surface of a pipe beam and make full contact with the surface of the pipe beam, and the bottom of the main body is provided with a refrigerant deposition liquid return device; the lower end of the evaporator is used for allowing water to pass through and discharging settlement matter. The mode of combining liquid division pipes and the liquid