公开(公告)号：US06896095B2

公开(公告)日：2005-05-24

申请号：US10063151

申请日：2002-03-26

申请人： Hemant S. Shah ,  John Stuart Hollingshead ,  John Wang ,  Prakash Tuljaram Thawani ,  Richard Charles Kosik ,  Mukesh Kumar

发明人： Hemant S. Shah ,  John Stuart Hollingshead ,  John Wang ,  Prakash Tuljaram Thawani ,  Richard Charles Kosik ,  Mukesh Kumar

IPC分类号： F01P5/06 ,  F04D29/58 ,  F04D29/66 ,  F15D1/02 ,  A47B81/06

CPC分类号： F01P5/06 ,  F04D29/665 ,  F15D1/02

摘要： The present invention is a system and method to significantly reduce noise associated with air-moving devices such as an axial flow fan using a fan shroud and barrel combination with built in silencers such as Helmholtz resonators. The invention can be applied to a variety of applications such as a thermal management system for a fuel cell powered vehicle. The resonator can be a hollow cavity in networks attached to an outer or inner barrel or shroud and tuned to reduce noise at predetermined noise frequency ranges within the airflow. The invention can also attach stator members on the inner surface of the outer barrel to further reduce noise. Additional sound absorbing material, such as steel wool, can be disposed within the resonator cavity.

摘要翻译： 本发明是一种系统和方法，该系统和方法使用具有诸如亥姆霍兹共振器的内置消音器的风扇罩和桶组合来显着降低与诸如轴流风扇等空气移动装置相关联的噪声。 本发明可以应用于各种应用，例如燃料电池动力车辆的热管理系统。 谐振器可以是连接到外筒或护罩上的网络中的空腔，并且被调谐以在气流中以预定的噪声频率范围减小噪声。 本发明还可以将定子构件附接在外筒的内表面上以进一步降低噪音。 附加的吸音材料，例如钢丝绒，可以设置在谐振腔内。