摘要
近年来,为了抵抗高层建筑风道阻力,大风量、大风压成为吸油烟机开发的重点方向。为了在吸油烟机国标噪声限值下设计出大风量、大风压的吸油烟机产品,需要对吸油烟机的降噪技术进行研究。运用混合CAA方法,通过Fluent流体仿真结合Actran声辐射仿真,以同一风机、同风量、不同吸油烟机平台下的流场数据作为噪声源,模拟出全自由声场下四个方向的噪声监测点监测到的平均声功率级值,得出了同风量、同风机下T型吸油烟机平台比7字型吸油烟机平台声功率级高2 dB左右的结论,说明不同的吸油烟机平台对声音的辐射效果不同,为后续大风量、大风压吸油烟机的降噪设计提供新的方向。
In recent years,in order to resist the air duct resistance of tall buildings,large air volume and high air pressure have become a key direction in the development of range hood.In order to design a range hood product with large air volume and high air pressure under the national standard noise limit,it is necessary to study the noise reduction technology of range hood.By using the hybrid CAA method,Fluent fluid simulation combined with Actran sound radiation simulation,the flow field data under the same fan,same air volume and different range hood platforms were used as noise sources to simulate the average sound power levels detected by noise monitoring points in four directions under the full free sound field.It is concluded that the sound power level of T-type range hood platform under the same air volume and the same fan is about 2 dB higher than that of 7-type range hood platform,indicating that different range hood platforms have different radiation effects on sound,which provides a new direction for the noise reduction design of range hood with large air volume and pressure.
作者
贾铌
王子轩
张莹
JIA Ni;WANG Zixuan;ZHANG Ying(Gree Electric Appliances,Inc.of Zhuhai,Zhuhai 519070)
出处
《家电科技》
2023年第3期16-21,共6页
Journal of Appliance Science & Technology
关键词
吸油烟机平台
降噪分析
仿真研究
声辐射
Range hood platform
Noise reduction analysis
Simulation study
Acoustic radiation
