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    • 7. 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。
    • 8. 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。