Reduction of tonal noise in cooling fans using splitter blades
    1.
    发明申请
    Reduction of tonal noise in cooling fans using splitter blades 审中-公开
    使用分流叶片降低冷却风扇中的音调噪声

    公开(公告)号:US20070154314A1

    公开(公告)日:2007-07-05

    申请号:US11642792

    申请日:2006-12-19

    IPC分类号: B64C11/16

    CPC分类号: F04D29/327

    摘要: Disclosed is a hub of an axial fan. The hub includes primary fan blades and splitter blades disposed between pairs of the primary fan blades. The resulting hub has been observed to reduce tonal noise during fan operation.

    摘要翻译: 公开了一种轴流风扇的轮毂。 集线器包括设置在成对的主风扇叶片之间的主风扇叶片和分流叶片。 已经观察到所得到的轮毂在风扇操作期间降低音调噪声。

    Cooling fan with integral housing and impeller
    2.
    发明申请
    Cooling fan with integral housing and impeller 审中-公开
    散热风扇带有一体式外壳和叶轮

    公开(公告)号:US20070154309A1

    公开(公告)日:2007-07-05

    申请号:US11637510

    申请日:2006-12-11

    IPC分类号: F04D3/00

    CPC分类号: F04D29/325 F04D29/384

    摘要: A cooling fan is disclosed. The cooling fan comprises fan blades having a primary blade component and a secondary blade component. The primary blade component produces an axial airflow. The secondary blades produce a radial airflow. The axial airflow and the radial airflow, respectively created by the primary blades and the secondary blades, combine to provide an increase axial outflow. The primary and secondary blades combine the axial and radial flows respectively created by the blades to produce an increased outflow. The design has been observed to reduce tonal noise as well.

    摘要翻译: 公开了一种冷却风扇。 冷却风扇包括具有主叶片部件和副叶片部件的风扇叶片。 主叶片部件产生轴向气流。 次级叶片产生径向气流。 分别由初级叶片和次级叶片产生的轴向气流和径向气流结合起来提供增加的轴向流出。 主叶片和次叶片组合由叶片分别产生的轴向和径向流动以产生增加的流出。 已经观察到设计以减少音调噪声。

    Centrifugal fan
    3.
    发明授权
    Centrifugal fan 失效
    离心风机

    公开(公告)号:US07008189B2

    公开(公告)日:2006-03-07

    申请号:US10409374

    申请日:2003-04-07

    IPC分类号: B63H1/00

    CPC分类号: F04D29/281

    摘要: A centrifugal fan and a rotor for a centrifugal fan comprising axial blades, straight blades, and a hub having a radius that increases as a function of distance from the fan inlet.

    摘要翻译: 离心式风扇和用于离心式风扇的转子,其包括轴向叶片,直叶片和轮毂,其具有作为距离风扇入口的距离的函数而增加的半径。

    MIXED-FLOW DUCTED FAN
    4.
    发明申请
    MIXED-FLOW DUCTED FAN 有权
    混合流动风扇

    公开(公告)号:US20120307440A1

    公开(公告)日:2012-12-06

    申请号:US13387175

    申请日:2010-02-26

    IPC分类号: F04D19/00 F04D29/52 G06F1/20

    摘要: In accordance with at least some embodiments, a computer system includes an enclosure (202) configured to hold at least one resource unit (204). The computer system also comprises a plurality of mixed-flow ducted fans units (400) selectively attached to the enclosure (202). Each mixed-flow ducted fan unit (400) comprises a duct (102) having an intake diameter, a bellmouth diameter, and an exhaust diameter. The bellmouth diameter is less than the intake diameter and the exhaust diameter.

    摘要翻译: 根据至少一些实施例,计算机系统包括被配置为保存至少一个资源单元(204)的外壳(202)。 计算机系统还包括选择性地附接到外壳(202)的多个混合流动管道风扇单元(400)。 每个混流风扇风扇单元(400)包括具有进气口直径,喇叭口直径和排气直径的管道(102)。 喇叭口直径小于进气口直径和排气口径。

    Blower impeller with partial tip blockage
    6.
    发明授权
    Blower impeller with partial tip blockage 有权
    鼓风机叶轮部分堵塞

    公开(公告)号:US08128369B2

    公开(公告)日:2012-03-06

    申请号:US12103575

    申请日:2008-04-15

    IPC分类号: F01D5/22

    CPC分类号: F04D29/188

    摘要: According to embodiments of the invention, an impeller includes a hub, and a plurality of radial blades for drawing the air inflow axially through the hub and delivering the drawn air radially towards the outside. A ring is attached to one or more tips of the plurality of radial blades to block a portion of the tip toward the inlet side of the impeller. The preferred blockage factor, which is the ratio of a height of the ring to a height of the tip, is approximately in a range between 30% and 40%. By blocking a portion of the tip toward the inlet side of the impeller, the low-momentum flow zone toward the inlet side of impeller is blocked, while the high-momentum flow zone toward the back side of impeller is enhanced. As such, the performance of the impeller is enhanced.

    摘要翻译: 根据本发明的实施例,叶轮包括轮毂和多个径向叶片,用于沿空气流动轴向地引导空气流入并将抽吸的空气径向地向外部输送。 环附接到多个径向叶片中的一个或多个尖端,以阻挡尖端的一部分朝向叶轮的入口侧。 优选的阻塞因子是环的高度与尖端的高度的比率,大约在30%至40%的范围内。 通过将叶片的一部分阻挡到叶轮的入口侧,阻止了向叶轮的入口侧的低动量流动区域,同时朝向叶轮后侧的高动量流动区域增强。 因此,提高了叶轮的性能。

    DUCTED FAN WITH INLET VANES AND DESWIRL VANES
    7.
    发明申请
    DUCTED FAN WITH INLET VANES AND DESWIRL VANES 审中-公开
    带有入口窗口和DESWIRL VANES的风扇

    公开(公告)号:US20090263238A1

    公开(公告)日:2009-10-22

    申请号:US12105253

    申请日:2008-04-17

    申请人: YOUSEF JARRAH

    发明人: YOUSEF JARRAH

    IPC分类号: F04D29/44

    CPC分类号: F04D29/544

    摘要: A fan apparatus includes a ducted housing with an axis of rotation including a first section and a second section. The fan apparatus further includes a first plurality of vanes being radially coupled within the first section and a second plurality of vanes being radially coupled within the second section. Additionally, the fan apparatus includes an impeller with a plurality of blades rotatably disposed within the ducted housing between the first plurality of vanes and the second plurality of vanes for rotary motion about the axis of rotation. The first plurality of vanes are stationary in a first arrangement to guide an inflow of air towards the impeller. The plurality of blades are rotary in a second arrangement to have a rotational direction substantially opposite to the inflow of air guided by the first arrangement. The second plurality of vanes are stationary in a third arrangement to diffuse an outflow of air substantially along the axis of rotation.

    摘要翻译: 风扇装置包括具有包括第一部分和第二部分的旋转轴线的管道壳体。 风扇装置还包括第一多个叶片,径向地联接在第一部分内,第二多个叶片径向地联接在第二部分内。 此外,风扇装置包括叶轮,叶轮具有可旋转地设置在第一多个叶片和第二多个叶片之间的管道壳体内的多个叶片,用于围绕旋转轴线的旋转运动。 第一组多个叶片在第一布置中是静止的,以引导空气朝向叶轮的流入。 多个叶片在第二布置中旋转以具有与由第一布置引导的空气的流入基本相反的旋转方向。 第二组叶片在第三布置中是静止的,以使空气基本沿着旋转轴线的流出扩散。

    Fan blade with non-varying stagger and camber angels
    8.
    发明申请
    Fan blade with non-varying stagger and camber angels 审中-公开
    风扇叶片与不变的交错和天使天使

    公开(公告)号:US20070160478A1

    公开(公告)日:2007-07-12

    申请号:US11643324

    申请日:2006-12-20

    IPC分类号: B64C27/46

    CPC分类号: F04D29/38

    摘要: A fan blade is described having a substantially non-varying stagger angle along its radial length. In one embodiment, a fan blade has a substantially non-varying stagger angle and a substantially non-varying camber angle along its radial length. In another embodiment, each airfoil section of the blade has at least substantially the same stagger angle or substantially the same camber angle.

    摘要翻译: 描述了沿其径向长度具有基本上不变的交错角的风扇叶片。 在一个实施例中,风扇叶片具有基本上不变的交错角度和沿其径向长度的基本上不变的外倾角。 在另一个实施例中,叶片的每个翼型部分具有至少基本相同的交错角或基本上相同的外倾角。

    Integrated air supply with humidification control for fuel cell power systems
    9.
    发明申请
    Integrated air supply with humidification control for fuel cell power systems 有权
    用于燃料电池电力系统的集成供气与加湿控制

    公开(公告)号:US20070082242A1

    公开(公告)日:2007-04-12

    申请号:US11245970

    申请日:2005-10-07

    IPC分类号: H01M8/04

    摘要: A fluid delivery device for an electrochemical conversion assembly. In one embodiment, the electrochemical conversion assembly is a fuel cell system. The device includes one or more fluid-manipulating components combined into a housing to minimize weight, size and complexity. In one form, the device may include a compressor, heat exchanger and a water vapor transfer unit, at least the latter two of which are located within a chamber defined by the housing. A controller can be used to monitor and selectively vary the extent to which at least one of these components modifies properties a fluid (such as air) that can be used as a reactant in the electrochemical conversion assembly. In a particular form, the heat exchanger and water vapor transfer unit can cooperate to promote the hydration of the reactant.

    摘要翻译: 一种用于电化学转化组件的流体输送装置。 在一个实施方案中,电化学转化组件是燃料电池系统。 该装置包括组合到壳体中的一个或多个流体操纵部件,以最小化重量,尺寸和复杂性。 在一种形式中,装置可以包括压缩机,热交换器和水蒸气转移单元,其至少后两者位于由壳体限定的室内。 控制器可用于监测和选择性地改变这些组分中的至少一个将能够用作电化学转化组件中的反应物的流体(例如空气)的性质改变的程度。 在特定形式中,热交换器和水蒸汽转移单元可以配合以促进反应物的水合。

    Cooling fan for electronic device
    10.
    发明授权
    Cooling fan for electronic device 有权
    电子设备冷却风扇

    公开(公告)号:US08647077B2

    公开(公告)日:2014-02-11

    申请号:US10783162

    申请日:2004-02-20

    IPC分类号: F04B39/00

    摘要: A cooling fan having motor and an impeller. The cooling fan may comprise a three-phase DC motor. The impeller may comprise a hub to house the three-phase DC motor and a plurality of blades extending from the hub. Each blade may have a height that is at least 25 % of the impeller diameter.

    摘要翻译: 具有马达和叶轮的冷却风扇。 冷却风扇可以包括三相DC电动机。 叶轮可以包括用于容纳三相DC电动机的轮毂和从轮毂延伸的多个叶片。 每个叶片可以具有至少叶轮直径的25%的高度。