公开(公告)号：US5326317A

公开(公告)日：1994-07-05

申请号：US960061

申请日：1992-10-14

申请人： Tetsuo Ishizu ,  Masao Wakai

发明人： Tetsuo Ishizu ,  Masao Wakai

IPC分类号： F04D29/66 ,  F24F7/06 ,  F24F7/10 ,  F24F13/24 ,  F24F7/007

CPC分类号： F04D29/663 ,  F24F13/24 ,  F24F7/065 ,  F24F2013/242 ,  F24F2013/245 ,  Y10S454/906

摘要： A ventilator has incorporated in a main body thereof an air blower having a ventilation casing provided with a fan intake opening facing an intake opening of the main body of the ventilator, the inner side of the main body being opened to form the intake opening thereof. A cylindrical soundproof unit including an inner ventilation passage having a larger ventilation area than a fan intake space and formed of a laminated plate which is formed of a plurality of air layers arranged in a direction intersecting the rotation axis of the air blower from the inner ventilation passage, is disposed in a space between the fan intake opening and the intake opening of the main body. The soundproof unit makes it possible to decrease noise generated by the air blower while the ventilation resistance is hardly increased.

摘要翻译： 通气机主体内装有具有通气壳体的送风机，该通风机壳设有面向通气机主体的进气口的风扇进气口，主体的内侧打开以形成其进气口。 一种圆柱形隔音单元，包括具有比风扇进气空间更大的通风面积的内部通风通道，并且由层叠板形成，所述层压板由沿着与所述鼓风机的旋转轴线相交的方向布置的多个空气层形成， 通道设置在风扇进气口和主体的进气口之间的空间中。 隔音单元可以降低鼓风机产生的噪音，同时通风阻力几乎不增加。