A layout structure of the Fin Evaporator of an air-cooled refrigerator, comprising an evaporator connected in series by the main evaporator and a secondary evaporator. The hooks arranged on the endplates at both ends are clamped together, the main and auxiliary evaporator radiating fins are alternately arranged up and down, and the spacing of the auxiliary evaporator radiating fins is set 2-4 times the spacing of the main evaporator radiating fins.
The evaporation pipeline in the auxiliary evaporator includes an inner aluminum tube, and micro teeth are uniformly distributed on the wall of the inner aluminum tube. The series connection between Industrial Evaporator Coils and the evaporation pipeline of the auxiliary evaporator is changed so that the evaporation area of ​​the evaporator is not affected after the series connection, the evaporation efficiency is guaranteed, and the overall refrigeration efficiency of the refrigerator is finally guaranteed.
According to different structures, fins can also be divided into flat fins, corrugated fins, and assault fins. Since the heat transfer efficiency of flat fins and corrugated fins is relatively low, currently, the fins of air-conditioning evaporators are mostly used the Assault fin structures.