关键词: 10 P柜机, 蒸发器, 上置倾角, 流场特性, 数值仿真, 结构优化, 亲水翅片

Abstract: To optimize the flow field distribution and heat transfer performance of the evaporator in a 10 P vertical cabinet air conditioner, takes two specifications of top mounted evaporators, namely 3-row 51-U and 2-row 42-U, as research objects. Using Ansys numerical simulation, the influences of evaporator row number, inclination angle and air guide structure on flow field velocity, pressure distribution and air volume are analyzed, and the layout principles and structural optimization scheme of the evaporator are proposed. The results show that compared with the original 3-row evaporator, the 2-row evaporator reduces flow resistance and increases air volume by 19%, but exhibits poorer airflow uniformity. Simply increasing the inclination angle of the 2-row evaporator cannot improve airflow uniformity. Installing an air guide strip with a 120° included angle and 40 mm width at the rear cross beam position effectively increases the airflow velocity at the lower part of the evaporator and improves overall airflow uniformity, with the simulated air volume decreasing by only 5% (within the range of simulation fluctuation). The conclusions provide a theoretical basis and engineering reference for the structural design and layout optimization of evaporators in vertical cabinet air conditioners.

Key words: 10 P vertical cabinet, Evaporator, Top mounted inclination, Flow field characteristics, Numerical simulation, Structural optimization, Hydrophilic fin