Abstract: Aimed at the problem of high temperature at the top of the refrigeration chamber in a two door air-cooled refrigerator with a hidden and hidden mechanical air door. By establishing a simulation of the overall flow field and temperature field, and analyzing the structural characteristics of the air duct and refrigerator, the reason for the high top temperature is determined, and an optimization plan is proposed for improvement. It is hoped that the problem can be improved through air duct optimization. Through multi-dimensional testing and verification, the optimization scheme has significantly improved the top temperature, providing a reference for future design optimization of such refrigerators.

Key words: Hide above and freeze below, Mechanical damper, Air cooled refrigerator