There are a large number of evaporators in industry, among which the evaporator used in refrigeration system is one of them. The evaporator is a very important part of the four major refrigeration parts. The low-temperature condensed liquid exchanges heat with the outside air through the evaporator, vaporizes and absorbs heat to achieve the effect of refrigeration. The evaporator is mainly composed of heating chamber and evaporation chamber. The heating chamber provides the heat required for the evaporation of the liquid to promote the boiling and vaporization of the liquid; The evaporation chamber completely separates the gas-liquid two phases.