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公开(公告)号：US20170051747A1
公开(公告)日：2017-02-23
申请号：US15236520
申请日：2016-08-15
发明人： Toshiyuki NAKAMURA , Shuji MIYAZAWA
CPC分类号： F04D25/06 , F04D19/007 , F04D25/0613 , F04D29/002 , F04D29/181 , F04D29/384 , F04D29/522 , F05D2240/304
摘要： An axial blower includes: a housing including a wind tunnel; an impeller that is disposed in the wind tunnel and includes a plurality of blades; and a motor that includes a rotation shaft and is secured to the housing, the impeller being secured to the rotation shaft. When an angle between a chord of the blade at a cross-sectional surface of the blade cut by a virtual cylindrical surface centering the rotation shaft, and a surface perpendicular to the rotation shaft is defined as a mounting angle, the blade includes an intermediate part between an inside diameter side part and an outside diameter side part of the blade, and this intermediate part has a mounting angle equal to or larger than a mounting angle of the inside diameter side part, and larger than a mounting angle of the outside diameter side part.
摘要翻译： 轴流鼓风机包括：包括风洞的壳体; 叶轮，其布置在所述风洞中并且包括多个叶片; 以及电动机，其包括旋转轴并且固定到所述壳体，所述叶轮固定到所述旋转轴。 当在叶片的横截面上由以中心于旋转轴的虚拟圆柱形表面切割的叶片的弦和垂直于旋转轴的表面之间的角度定义为安装角度时，叶片包括中间部分 在叶片的内径侧部分和外径侧部分之间，该中间部分的安装角度等于或大于内径侧部分的安装角度，并且大于外径侧的安装角度 部分。
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公开(公告)号：US20230023454A1
公开(公告)日：2023-01-26
申请号：US17844375
申请日：2022-06-20
摘要： Provided is an axial fan including: a rotor blade having a rotation axis along an air-blowing direction; and a casing, wherein the casing includes: an outer frame portion housing the rotor blade; a cylindrical base portion located on the rotation axis; and a fixed blade provided between an inner peripheral surface of the outer frame portion and an outer peripheral surface of the base portion and downstream of the rotor blade in the air-blowing direction, the fixed blade includes a wind receiving surface, and the wind receiving surface in a first cross section, along the air-blowing direction, of the fixed blade has a smaller blade curvature than the wind receiving surface in a second cross section of the fixed blade along a cutting plane line at a position moved in a rotation direction of the rotor blade from a cutting plane line of the first cross section.
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