家用柜机空调平行流蒸发器翅片音改善研究

Research on improvement method of household air conditioner parallel flow evaporator abnormal fin noise

随着平行流蒸发器在家用空调中的推广使用,其音品质的研究也逐步开展,当平行流蒸发器与吹风式风机风向非平行布置时,较容易局部出现翅片音,为了改善某家用柜机平行流蒸发器翅片音,提出了一种9点加权平均值的噪声主观评价计算方法,并结合CFD仿真计算与实验测试,探究了内置导风板尺寸与摆动角度对翅片音主观评价以及风道性能的影响,最终选定300×70mm摆动30°的导风板为最优方案,在满足风道性能指标前提下,明显改善了该柜机翅片音听觉感受。

With the popularization of parallel flow evaporator in household air conditioning,the research on sound quality has been carried out gradually,when the wind direction of the parallel flow evaporator is not parallel to the blower,the abnormal fin noise sound is more likely to occur,in order to improve the abnormal fin sound of parallel flow evaporator of household cabinet machine,a 9-point weighted average noise subjective evaluation method is proposed,combined with CFD simulation and experimental test,the influence of the size and swing angle of the built-in air deflector on the subjective evaluation of abnormal fin sound and the performance of the air duct was investigated,300×70 mm air deflector with 30°swing is selected as the optimal scheme.Under the condition of satisfying the performance index of air duct,the sound perception of the fins of the cabinet is improved obviously.