Falling film evaporator, both liquid and liquid distributor plate

The present invention discloses a falling film evaporator, a liquid distributor plate and are liquid, each liquid comprising a plate and a plate on said plate defines cloth liquid inlet (11), the liquid distributor holes (11 ) or less than the inlet area larger than the area of ​​its outlet. Each plate of the present invention provides liquid, liquid distributor inlet area hole is greater or less than the area of ​​its outlet, i.e. an outlet area of ​​the inlet area and its liquid distributor holes are not equal. Thus, a longitudinal section of the inlet hole are not rectangular cloth, in the injection fluid, an outlet end occurs due to a change to the guiding direction of the fluid to the inlet end, to avoid the formation of fluid boundary at reflux the vortex outlet end. Further avoid vortices increased energy consumption, and, to avoid the instability of the vortex liquid layer between the fabric caused to flow, a steady flow of one layer to avoid liquid are destroyed under the plate (or spray uniformity), furthermore , to avoid the accumulation of bubbles generated vortices improves flow uniformity of the liquid for the fluid hole.