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摘 要： 风机是影响空调系统制冷能力及制冷效果的关键部件，针对空调器室外侧所采用的离心风机，采用数值模拟与实验研究相结合的方法，对其设计工况下的室外侧内部流场进行了二维数值模拟，并通过实验的方法分析风机为系统提供的风量，对比分析得到两种不同类型离心风机的流动情况及性能特性。结果显示西洛克风机具有效率高，流量大，结构内部流动顺畅，更适合用在紧凑型空调器的室外侧，此结论为今后空调器的结构设计及性能优化，提出理论依据。 关键词： 空调器 离心风机 数值模拟 叶型分析 Numerical Simulation on Different Centrifugal Fans in Air Conditioner Abstract ：Based on centrifugal fan which is used in the window air conditioner, using numerical simulation and test research, it is simulated the inner field by 2D model, and then check the performance of the fan by fan test chamber. In that way, we know the inner field and the performance of two type centrifugal fan. As the result, the turbo fan has high efficiency, big air flow rate, and no vortex, and be reasonable to use in the little size window air conditioner outdoor units. It can be concluded that the results is important and available for the structure design and performance optimization. Key word : window air conditioner, centrifugal fan, numerical simulation, blade analysis