Abstract: For air fryers heated by high-speed forced convection circulation, there is an uneven temperature field in the inner chamber, which leads to the need to flip the surface during cooking. Based on the method of computational fluid dynamics, the three-dimensional numerical simulation analysis of the temperature field and velocity flow field of the air fryer was carried out by using Fluent software. Further, the accuracy of the numerical simulation method was verified by comparing the measured temperature data with the simulation data. By changing the motor speed, baking plate, and barrel structure of the air fryer, numerical simulation research was conducted, and the experimental verification and comparative analysis show that the motor speed is increased, the opening of the baking tray is improved, and the structure of the baking tray is changed to a separate type, so that the overall three-dimensional temperature difference of the inner cavity of the air fryer decreases by about 11℃, and the temperature uniformity of the inner cavity is improved.

Key words: Air fryer, CFD, Temperature field, Uniformity