Abstract: :In view of the phenomenon that the main control board and frequency converter board is placed in the mechanical room of a certain type of refrigerator in our company, which needs repeated modification experiments, the computational fluid dynamics method is used to simulate and optimize the design at the front-end. However, the environment of the refrigerator varies greatly with seasons and regions, and the boundary conditions of the compressor and other components in the mechanical room change greatly. Therefore, the simulation parameters and boundary conditions are dynamically rectified by infrared imager, which can realize the calculation error less than 5%. The temperature distribution in the mechanical room can be visually displayed, which greatly reduces the experimental time and cost, and eliminates the waste of design time and materials.

Key words: Refrigerator, Mechanical room, Computational fluid dynamics, Forward design