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    • 5. 发明申请
    • Axial flow fan
    • 轴流风机
    • US20050232765A1
    • 2005-10-20
    • US11109717
    • 2005-04-20
    • Masanori WatanabeTaku IwaseShouichi KawamataOsamu SekiguchiTaro Tanno
    • Masanori WatanabeTaku IwaseShouichi KawamataOsamu SekiguchiTaro Tanno
    • F01D5/10F04D29/52F04D29/54
    • F04D29/545
    • In an axial flow fan, for reducing fluid noise and further reducing the noise by suppressing solid-conveyed noise (structure-bone noise) generated by the vibration of an electric motor or the like, the axial flow fan is equipped with a propeller, a motor for driving the propeller, and a venturi portion disposed on the outer circumference side of the propeller and provided on its inner circumferential side with a bellmouth through which an air flow generated by the revolution of the propeller passes, wherein the bellmouth has an intake portion whose diameter contracts in a curved shape in the direction of the air flow, a cylindrical portion having a cylindrical shape, and a discharge portion whose diameter slantingly expands in the direction of the air flow.
    • 在轴流风扇中,通过抑制由电动机等的振动产生的固体输送噪声(结构骨噪声),为了减少流体噪声并进一步降低噪声,轴流风扇配备有螺旋桨, 用于驱动螺旋桨的马达和设置在螺旋桨的外周侧上的文氏管部分,并且在其内周侧上设置有由螺旋桨旋转产生的空气流通过的喇叭口,其中喇叭口具有进气部分 其直径在空气流动方向上呈弯曲形状收缩,圆柱形部分具有圆柱形形状,并且排出部分的直径在空气流动方向上倾斜地膨胀。
    • 6. 发明授权
    • Axial flow fan
    • 轴流风机
    • US07470108B2
    • 2008-12-30
    • US11109717
    • 2005-04-20
    • Masanori WatanabeTaku IwaseShouichi KawamataOsamu SekiguchiTaro Tanno
    • Masanori WatanabeTaku IwaseShouichi KawamataOsamu SekiguchiTaro Tanno
    • F04D29/54
    • F04D29/545
    • In an axial flow fan, for reducing fluid noise and further reducing the noise by suppressing solid-conveyed noise (structure-borne noise) generated by the vibration of an electric motor or the like, the axial flow fan is equipped with a propeller, a motor for driving the propeller, and a venturi portion disposed on the outer circumference side of the propeller and provided on its inner circumferential side with a bellmouth through which an air flow generated by the revolution of the propeller passes, wherein the bellmouth has an intake portion whose diameter contracts in a curved shape in the direction of the air flow, a cylindrical portion having a cylindrical shape, and a discharge portion whose diameter slantingly expands in the direction of the air flow.
    • 在轴流风扇中,通过抑制由电动机等的振动产生的固体输送噪声(结构噪声),为了降低流体噪声并进一步降低噪声,轴流风扇配备有螺旋桨, 用于驱动螺旋桨的马达和设置在螺旋桨的外周侧上的文氏管部分,并且在其内周侧上设置有由螺旋桨的旋转产生的空气流通过的喇叭口,其中喇叭口具有进气部分 其直径在空气流动方向上呈弯曲形状收缩,圆柱形部分具有圆柱形形状,并且排出部分的直径在空气流动方向上倾斜地膨胀。
    • 10. 发明授权
    • Silencing equipment for electric devices
    • 电气设备消音设备
    • US08485310B2
    • 2013-07-16
    • US13044133
    • 2011-03-09
    • Yosuke TanabeMasanori WatanabeAkira GotoShigeyasu TsubakiMasahiko UsuiAkio Idei
    • Yosuke TanabeMasanori WatanabeAkira GotoShigeyasu TsubakiMasahiko UsuiAkio Idei
    • F01N1/04F24F13/24F01N1/00F24F13/00
    • G10K11/172H05K7/20718
    • Silencing equipment provided with one or more flow channels through which cooling air flows has a flow channel forming member that forms the flow channel, and an acoustic absorbent member that is fixed to the flow channel forming member. A resonance type silencer is formed on a wall surface of the flow channel by providing a cavity for the resonance type silencer in the acoustic absorbent member and an aperture for the resonance type silencer in a portion of the flow channel forming member. The resonance type silencer sets a frequency of noise necessary to be reduced based on a peak frequency of noise generated by a fan. The silencing equipment further has a slide member which slides by a slide mechanism to adjust the area of the top of the aperture. The silencing equipment for electronic devices capable of cooling heat generating sections thereof with air has a small and simple structure and can improve a silencing effect by blowing air.
    • 设置有冷却空气流过的一个或多个流动通道的沉降设备具有形成流路的流路形成部件,以及固定在流路形成部件上的吸声部件。 通过在吸声部件中设置共振型消音器的空腔,在流路形成部件的一部分设置共振型消音器的开口,在流路的壁面上形成共振型消音器。 谐振型消声器基于由风扇产生的噪声的峰值频率来设定需要减小的噪声频率。 消音装置还具有滑动构件,滑动构件通过滑动机构滑动以调节孔的顶部的面积。 能够用空气冷却发热部的电子设备的消音装置结构简单,结构简单,能够通过吹送空气来提高消音效果。