The evaporator is the object that converts liquid matter into a gaseous state. There are a large number of evaporators in industry, among which the evaporator applied to the refrigeration system is one of them. The evaporator is a very important component of the four major parts of refrigeration. The low-temperature condensed liquid passes through the evaporator and exchanges heat with the outside air, vaporizes and absorbs heat, achieving the effect of refrigeration. The evaporator mainly consists of a heating chamber and an evaporation chamber. The heating chamber provides the heat required for evaporation to the liquid, promoting liquid boiling and vaporization; the evaporation chamber completely separates the gas-liquid phases. Specifications: The evaporator has an inner diameter of φ200mm and a height of about 100 mm metal basin. The evaporator is a metal circular structure with a smooth inner wall, and the evaporator blade should not