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1. 发明授权

US5957661A High efficiency to diameter ratio and low weight axial flow fan 失效
标题翻译：高效直径比和低重量轴流风机
公开(公告)号：US5957661A
公开(公告)日：1999-09-28
申请号：US97972
申请日：1998-06-16
申请人： Alexander Graham Hunt , Hugo Capdevila , Bonifacio M. Castillo
发明人： Alexander Graham Hunt , Hugo Capdevila , Bonifacio M. Castillo
IPC分类号： F01D5/14 , F04D29/32 , F04D29/38 , B63H1/16 , B64C11/00 , F01D5/22
CPC分类号： F01D5/141 , F04D29/326 , F04D29/384
摘要： A high efficiency axial flow fan includes a hub, fan blades and a circular band. The hub rotates about a rotational axis when torque is applied from a shaft rotatably driven by a power source. The circular band is concentric with the hub, connected to the tip of each blade, and is spaced radially outward from the hub. The blades are configured to produce an airflow when rotated about the rotational axis. Each blade has a chord length distribution, stagger angle and dihedral distribution which varies along the length of the blade. The dihedral distance of each blade varies as a function of blade radius from the rotational axis.
摘要翻译：高效轴流风机包括轮毂，风扇叶片和圆形带。当从由电源可旋转地驱动的轴施加扭矩时，毂围绕旋转轴线旋转。圆形带与轮毂同心，连接到每个叶片的尖端，并且与轮毂径向向外间隔开。叶片被构造成当围绕旋转轴线旋转时产生气流。每个叶片具有沿叶片长度变化的弦长分布，交错角和二面分布。每个叶片的二面距离随着从旋转轴线的叶片半径的函数而变化。

2. 发明授权

US5906179A High efficiency, low solidity, low weight, axial flow fan 失效
标题翻译：高效率，低坚固性，低重量，轴流风机
公开(公告)号：US5906179A
公开(公告)日：1999-05-25
申请号：US883827
申请日：1997-06-27
申请人： Hugo Capdevila
发明人： Hugo Capdevila
IPC分类号： F04D29/32 , F04D29/38 , F01P7/10
CPC分类号： F04D29/384 , F04D29/326 , Y10S416/05
摘要： A high efficiency, low solidity, low weight, axial flow fan (100, 200, 300) includes a hub (102, 202, 302), fan blades (104, 204, 304) and a circular band (106, 206, 306). The hub (102, 202, 302) rotates about a rotational axis (110, 210, 310) when torque is applied from a shaft (not shown) rotatably driven by a power source (not shown). The circular band (106, 206, 306) is concentric with the hub (102, 202, 302) and is spaced radially outward from the hub. The blades (104, 204, 304) are distributed circumferentially around the hub (102, 202, 302) and extend radially from the hub to the circular band (106, 206, 306). The blades (104, 204, 304) are configured to produce an airflow when rotated about the rotational axis (110, 210, 310). Each blade (104, 204, 304) has a chord length distribution which varies along the length of the blade, such that the chord length has a local minimum value at a predetermined location between the ends of the blade. The chord length of the blades (104, 204, 304) as a function of blade radius from the rotational axis (110, 210, 310) has an inflection point at a predetermined distance from the hub less than the length of the blade.
摘要翻译：高效率，低坚固性，低重量的轴流风扇（100,200,300）包括轮毂（102,202,302），风扇叶片（104,204,304）和圆形带（106,206,306 ）。当从由电源（未示出）旋转驱动的轴（未示出）施加扭矩时，毂（102,202,302）围绕旋转轴线（110,210,310）旋转。圆形带（106,206,306）与轮毂（102,202,302）同心并且与轮毂径向向外间隔开。叶片（104,204,304）周向地围绕轮毂（102,202,302）分布并且从轮毂径向延伸到圆形带（106,206,306）。叶片（104,204,304）被配置为当围绕旋转轴线（110,210,310）旋转时产生气流。每个叶片（104,204,304）具有沿着叶片的长度变化的弦长分布，使得弦长在叶片的端部之间的预定位置处具有局部最小值。作为来自旋转轴线（110,210,310）的叶片半径的函数的叶片（104,204,304）的弦长具有距轮毂预定距离小于叶片长度的拐点。

3. 发明授权

US5577888A High efficiency, low-noise, axial fan assembly 失效
标题翻译：高效率，低噪音，轴流式风机组装
公开(公告)号：US5577888A
公开(公告)日：1996-11-26
申请号：US493872
申请日：1995-06-23
申请人： Hugo Capdevila , Eric Bartlett , John Pharoah , William Gallivan
发明人： Hugo Capdevila , Eric Bartlett , John Pharoah , William Gallivan
IPC分类号： F04D19/00 , F04D29/32 , F04D29/38 , F04D29/54
CPC分类号： F04D19/002 , F04D29/325
摘要： A high efficiency fan and stator arrangement for generating an airflow through a heat exchanger is disclosed herein. The fan is rotated about its rotational axis by an electric motor, and includes eight blades extending radially from a hub to a circular band. Each fan blade has a stagger angle and chord lengths which vary along the span of the blades. Each fan blade also includes a trailing edge having a flat surface extending along the edge. The flat surfaces of each fan blade are coincident with a plane perpendicular to the rotational axis. The fan produces an airflow when rotated about the rotational axis, wherein a component of the airflow occurs at a first angle to the rotational axis. The fan support has a central bearing support and twenty elongated airfoils extending radially outward from the bearing support. Each airfoil has substantially the same length as the fan blades and includes a curved airflow guiding surface having a leading edge and a trailing edge downstream from the leading edge. The curve of the guiding surface is a generally circular arc with a tangent to the guiding surface at the leading edge substantially at the first angle to the rotational axis, and a tangent to the trailing edge at a second angle to the rotational axis less than the first angle. The fan support is located downstream of the heat exchanger to guide the airflow produced by the fan through the heat exchanger.
摘要翻译：本文公开了一种用于通过热交换器产生气流的高效率风扇和定子装置。风扇通过电动机绕其旋转轴线旋转，并且包括从轮毂径向延伸到圆形带的八个叶片。每个风扇叶片具有交错的角度和弦长度，其沿着叶片的跨度而变化。每个风扇叶片还包括具有沿边缘延伸的平坦表面的后缘。每个风扇叶片的平坦表面与垂直于旋转轴线的平面重合。当围绕旋转轴线旋转时，风扇产生气流，其中气流的分量以与旋转轴线成第一角度发生。风扇支撑件具有中心轴承支撑件和从轴承支撑件径向向外延伸的二十个细长翼型件。每个翼型件具有与风扇叶片基本相同的长度，并且包括弯曲的气流引导表面，其具有在前缘下游的前缘和后缘。引导表面的曲线是大致圆弧，其中前导边缘处的引导表面与旋转轴线基本上成第一角度的切线，并且与旋转轴线成小于第二角度的第二角度的后缘的切线第一角度风扇支撑件位于热交换器的下游，以引导由风扇产生的气流通过热交换器。

4. 发明授权

US06368061B1 High efficiency and low weight axial flow fan 失效
标题翻译：高效低重量轴流风机
公开(公告)号：US06368061B1
公开(公告)日：2002-04-09
申请号：US09564276
申请日：2000-05-04
申请人： Hugo Capdevila
发明人： Hugo Capdevila
IPC分类号： F04D2938
CPC分类号： F04D29/326 , F04D29/386 , Y10S416/05
摘要： A fan includes a hub rotatable about an axis; an annular band concentric with the hub and spaced radially outward from the hub; seven fan blades distributed circumferentially around the hub and extending radially from the hub to the annular band. Each blade has specific parameters defined by: r, the non-dimensional radius from the rotational axis (r=R/Rtip with R being the radius from the rotational axis and Rtip being the radius from the rotational axis at the blade tip), &xgr;, the stagger angle of the blade at the radial distance r, &thgr;, the camber angle of the blade at the radial distance r, &sgr;, the solidity C/S, with C being chord length and S being the circumferential blade spacing at the radial distance r, c, the non-dimensional chord length (C/Rtip) of the blade at the radial distance r, t, the non-dimensional thickness (T/C where T is the actual thickness at R) of the blade at radius r, &Lgr;, the skew angle of the blade at the radial distance r calculated at 30% chord where the skew at the hub radius is defined as zero skew, and dH/dR, the slope of the dihedral measured at r.
摘要翻译：风扇包括可围绕轴线旋转的轮毂; 与所述轮毂同心并与所述轮毂径向向外间隔开的环形带; 七个风扇叶片围绕轮毂周向分布并且从轮毂径向延伸到环形带。每个叶片具有以下定义的具体参数：r，来自旋转轴的无量纲半径（r = R / Rtip，其中R是来自旋转轴的半径，Rtip是来自叶尖处的旋转轴的半径），＆xgr ;在径向距离r，θ处的叶片的交错角度，在径向距离r处的叶片的外倾角，西格玛，坚固度C / S，其中C是弦长，S是在径向距离r，c，叶片在径向距离r，t处的无量纲弦长度（C / Rtip），叶片的无量纲厚度（T / C，其中T是R处的实际厚度）半径r，LAMBD，叶片在径向距离r处的倾斜角度，其在30％弦处计算，其中轮毂半径处的歪斜被定义为零倾斜，以及dH / dR，在r处测量的二面角的斜率。

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