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    COMPACT FAN ASSEMBLY WITH THRUST BEARING
    11.
    发明申请
    COMPACT FAN ASSEMBLY WITH THRUST BEARING 有权
    紧凑型风扇组件与轴承

    公开(公告)号：US20140049906A1

    公开(公告)日：2014-02-20

    申请号：US14061682

    申请日：2013-10-23

    Applicant: Apple Inc.

    Inventor： Anthony Joseph Aiello ,  Jesse T. Dybenko ,  Brett W. Degner

    IPC: F04D29/051 ,  G06F1/20

    CPC classification number: F04D29/051 ,  F04D17/16 ,  F04D25/062 ,  F04D29/0513 ,  F04D29/281 ,  F04D29/30 ,  F04D29/668 ,  F16C17/045 ,  F16C17/107 ,  F16C2360/46 ,  G06F1/20 ,  G06F1/203 ,  H02K5/1675 ,  H02K7/09 ,  H02K7/14 ,  H02K21/22 ,  H02K2205/03

    Abstract: A fan assembly for a computing device is disclosed. The device can include an impeller having a number of blades and a motor for turning the blades. The motor can turn the blades via a magnetic interaction between the impeller and the motor. A fluid dynamic thrust bearing can be used to control a position of the impeller relative to the motor. In particular, the impeller can be configured to rotate around an axis and the thrust bearing can be used to control movement of the impeller in a direction aligned with the rotational axis. In one embodiment, the thrust bearing can be configured to stabilize the impeller when vibratory forces act upon the fan assembly. More particularly, parameters associated with the thrust bearing can be selected to counteract vibratory forces emitted by a speaker system.

    Abstract translation: 公开了一种用于计算设备的风扇组件。 该装置可以包括具有多个叶片的叶轮和用于转动叶片的马达。 电机可以通过叶轮和电机之间的磁性相互作用来转动叶片。 流体动力推力轴承可用于控制叶轮相对于马达的位置。 特别地，叶轮可以构造成围绕轴线旋转，并且推力轴承可用于控制叶轮在与旋转轴线对准的方向上的运动。 在一个实施例中，推力轴承可以构造成当振动力作用在风扇组件上时稳定叶轮。 更具体地，可以选择与推力轴承相关联的参数以抵消由扬声器系统发射的振动力。

    Compact fan assembly with thrust bearing
    13.
    发明授权
    Compact fan assembly with thrust bearing 有权
    带推力轴承的紧凑型风扇组件

    公开(公告)号：US09341192B2

    公开(公告)日：2016-05-17

    申请号：US14061682

    申请日：2013-10-23

    Applicant: Apple Inc.

    Inventor： Anthony Joseph Aiello ,  Jesse T. Dybenko ,  Brett W. Degner

    IPC: F04D29/051 ,  G06F1/20 ,  F04D25/06 ,  F04D29/30 ,  F04D17/16 ,  F04D29/28 ,  F04D29/66 ,  H02K5/167 ,  H02K7/14 ,  F16C17/10 ,  F16C17/04 ,  H02K21/22 ,  H02K7/09

    CPC classification number: F04D29/051 ,  F04D17/16 ,  F04D25/062 ,  F04D29/0513 ,  F04D29/281 ,  F04D29/30 ,  F04D29/668 ,  F16C17/045 ,  F16C17/107 ,  F16C2360/46 ,  G06F1/20 ,  G06F1/203 ,  H02K5/1675 ,  H02K7/09 ,  H02K7/14 ,  H02K21/22 ,  H02K2205/03

    Abstract: A fan assembly for a computing device is disclosed. The fan assembly can include an impeller having a number of blades and a motor for turning the blades. The motor can turn the blades via a magnetic interaction between the impeller and the motor. A fluid dynamic thrust bearing can be used to control a position of the impeller relative to the motor. In particular, the impeller can be configured to rotate around an axis and the thrust bearing can be used to control movement of the impeller in a direction aligned with the rotational axis. In one embodiment, the thrust bearing can be configured to stabilize the impeller when vibratory forces act upon the fan assembly. More particularly, parameters associated with the thrust bearing can be selected to counteract vibratory forces emitted by a speaker system.

    Abstract translation: 公开了一种用于计算设备的风扇组件。 风扇组件可以包括具有多个叶片的叶轮和用于转动叶片的马达。 电机可以通过叶轮和电机之间的磁性相互作用来转动叶片。 流体动力推力轴承可用于控制叶轮相对于马达的位置。 特别地，叶轮可以构造成围绕轴线旋转，并且推力轴承可用于控制叶轮在与旋转轴线对准的方向上的运动。 在一个实施例中，推力轴承可以构造成当振动力作用在风扇组件上时稳定叶轮。 更具体地，可以选择与推力轴承相关联的参数以抵消由扬声器系统发射的振动力。

    Fan impeller with sections having different blade design geometries
    14.
    发明授权
    Fan impeller with sections having different blade design geometries 有权

    公开(公告)号：US11723172B2

    公开(公告)日：2023-08-08

    申请号：US17448700

    申请日：2021-09-23

    Applicant: Apple Inc.

    Inventor： Anthony Joseph Aiello ,  Brett W. Degner ,  Jesse T. Dybenko ,  Arash Naghib Lahouti ,  Eric R. Prather

    IPC: F04D29/28 ,  H05K7/20 ,  F04D29/30 ,  F04D17/16

    CPC classification number: H05K7/20172 ,  F04D17/16 ,  F04D29/281 ,  F04D29/30

    Abstract: Fan assemblies are disclosed. Fan assemblies include an impeller with asymmetric design. For example, an impeller may include a first set of blades with one geometry and second set of fan blades with another geometry. This enables a dual-inlet centrifugal fan to generate different air flow performance characteristics for the air entering one fan inlet compared to the air entering the other fan inlet. The impeller, with different fan blade configurations, can better handle air flow entering the fan assembly through different inlets, particularly when the air flow conditions differ through the inlets due to impeding structures (e.g., motor, struts, etc.). As a result, air flow distribution from air leaving the impeller, including the locations associated with the different fan blade configurations, is relatively uniform. Beneficially, when air flow distribution uniformity increases, the fan assembly operates more efficiently, as air flow pressure losses due to flow separation are mitigated.

    Method to reduce entrance losses to increase fan inlet flow and reduce acoustic noise
    15.
    发明授权
    Method to reduce entrance losses to increase fan inlet flow and reduce acoustic noise 有权

    公开(公告)号：US11333170B2

    公开(公告)日：2022-05-17

    申请号：US16595062

    申请日：2019-10-07

    Applicant: Apple Inc.

    Inventor： Anthony Joseph Aiello ,  Jesse T. Dybenko ,  Richard A. Herms

    IPC: F04D29/44 ,  F04D29/42 ,  F04D17/16 ,  F04D25/06 ,  F04D29/28 ,  F04D29/30

    Abstract: A cooling system for optimizing fan air flow performance without compromising acoustic performance is disclosed. At least three fan feature embodiments are disclosed: (1) sloped fan blades, (2) sloped impeller hubs, and (3) inlet flow guidance features. For the first embodiment, fan blades attached to an impeller disc and having leading edges that progressively curve toward a center of the impeller disc. For the second embodiment, the impeller disc is attached to and centered on an impeller hub that has a sloped hub surface that progressively curves toward the fan blades. For the third embodiment, an inlet flow guidance feature is positioned within a region surrounding a fan's inlet promoting smooth passage of air into the fan. In some embodiments, all three fan features are combined.

    Method of controlling start-up noise in BLDC (brushless direct current) fan motors
    17.
    发明授权
    Method of controlling start-up noise in BLDC (brushless direct current) fan motors 有权

    公开(公告)号：US09853580B2

    公开(公告)日：2017-12-26

    申请号：US14205135

    申请日：2014-03-11

    Applicant: Apple Inc.

    Inventor： Brad Lee Patton ,  Anthony Joseph Aiello ,  Jesse T. Dybenko

    IPC: H02P6/10 ,  H02P6/20 ,  H02P27/08 ,  F04D25/06

    CPC classification number: H02P6/20 ,  F04D25/0613 ,  H02P27/085

    Abstract: A method to reduce acoustic noise in a cooling fan motor is disclosed. The method includes reducing the slew rate of a PWM (pulse width modulation) voltage waveform applied to energize a coil of the fan motor. This slew rate reduction results in lower mechanical vibrations and acoustic noise in the fan motor. In one embodiment, the slew rate reduction is performed during startup of the fan motor, when the motor is spinning slowly and there is little air flow noise. In another embodiment, the slew rate reduction is not performed during high speed operation of the fan motor, when the fan motor is spinning very fast and air flow noise masks the motor noise. In one embodiment, there is variable slew rate control depending on the speed of the fan motor.

    Fan performance by increasing effective blade height in a tolerance neutral manner
    19.
    发明授权
    Fan performance by increasing effective blade height in a tolerance neutral manner 有权
    通过以公差中性的方式提高有效的刀片高度来实现风扇性能

    公开(公告)号：US09334867B2

    公开(公告)日：2016-05-10

    申请号：US13887184

    申请日：2013-05-03

    Applicant: Apple Inc.

    Inventor： Anthony Joseph Aiello ,  Jesse T. Dybenko ,  Richard A. Herms

    IPC: F04D17/16 ,  F04D25/06 ,  F04D29/42 ,  F04D29/44

    CPC classification number: F04D17/16 ,  F04D25/062 ,  F04D29/4226 ,  F04D29/441

    Abstract: The described embodiments relate generally to improving performance characteristics of a low profile fan. More specifically configurations having sloped fan blade edges are disclosed. By applying a gradual slope to each of the fan blades, performance of the fan can be increased without risking contact or rubbing between the fan blades and a fan housing. In some embodiments, the sloped fan blades can be configured to prevent contact when bearings of the fan include a certain amount of tilt play.

    Abstract translation: 所描述的实施例一般涉及改进低调风扇的性能特性。 更具体地，公开了具有倾斜风扇叶片边缘的构造。 通过对每个风扇叶片施加逐渐的斜坡，可以增加风扇的性能，而不会在风扇叶片和风扇壳体之间接触或摩擦的风险。 在一些实施例中，倾斜的风扇叶片可构造成防止风扇的轴承包含一定量的倾斜运动时的接触。

    METHOD TO REDUCE ENTRANCE LOSSES TO INCREASE FAN INLET FLOW AND REDUCE ACOUSTIC NOISE
    20.
    发明申请
    METHOD TO REDUCE ENTRANCE LOSSES TO INCREASE FAN INLET FLOW AND REDUCE ACOUSTIC NOISE 审中-公开
    减少入口损失以增加风扇入口流量并减少声音噪声的方法

    公开(公告)号：US20150260198A1

    公开(公告)日：2015-09-17

    申请号：US14581882

    申请日：2014-12-23

    Applicant: Apple Inc.

    Inventor： Anthony Joseph Aiello ,  Jesse T. Dybenko ,  Richard A. Herms

    IPC: F04D29/42 ,  F04D17/08 ,  F04D29/28

    Abstract: A cooling system for optimizing fan air flow performance without compromising acoustic performance is disclosed. At least three fan feature embodiments are disclosed: (1) sloped fan blades, (2) sloped impeller hubs, and (3) inlet flow guidance features. For the first embodiment, fan blades attached to an impeller disc and having leading edges that progressively curve toward a center of the impeller disc. For the second embodiment, the impeller disc is attached to and centered on an impeller hub that has a sloped hub surface that progressively curves toward the fan blades. For the third embodiment, an inlet flow guidance feature is positioned within a region surrounding a fan's inlet promoting smooth passage of air into the fan. In some embodiments, all three fan features are combined.

    Abstract translation: 公开了一种用于在不影响声学性能的情况下优化风扇空气流动性能的冷却系统。 公开了至少三个风扇特征实施例：（1）倾斜的风扇叶片，（2）倾斜的叶轮毂，和（3）入口流动引导特征。 对于第一实施例，附接到叶轮盘并具有朝向叶轮盘的中心逐渐弯曲的前缘的风扇叶片。 对于第二实施例，叶轮盘被附接到叶轮毂上并且具有朝向风扇叶片逐渐弯曲的倾斜毂表面的叶轮毂。 对于第三实施例，入口流动引导特征位于围绕风扇入口的区域内，促进空气进入风扇的平滑通道。 在一些实施例中，组合所有三个风扇特征。

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