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    NOISE MITIGATION FOR HEAD-MOUNTED DEVICE
    3.
    发明申请
    NOISE MITIGATION FOR HEAD-MOUNTED DEVICE 有权

    公开(公告)号：US20220394889A1

    公开(公告)日：2022-12-08

    申请号：US16783049

    申请日：2020-02-05

    Applicant: Apple Inc.

    Inventor： Ivan S. Maric ,  Aidan N. Zimmerman ,  Phil M. Hobson ,  Jonathan C. Atler ,  Arash Naghib Lahouti ,  Jesse T. Dybenko

    IPC: H05K7/20 ,  H04N5/225 ,  H04N5/655 ,  H04N5/247 ,  G10K11/175

    Abstract: A head-mounted device can effectively manage heat while also managing noise output in a manner that reduces the user's perception thereof. For example, a support member extending across a flow channel can provide multiple sections with different profiles and/or cross-sectional dimensions within the flow channel. Each of the profiles and/or cross-sectional dimensions can generate tonal noises at different frequencies, so that the tonal noises generated are distributed across multiple frequencies to mask such tonal noises among broadband noises that are generated by the head-mounted device. Such a support member can be moveably positioned within the flow channel and rigidly coupled to other components of the head-mounted device. Such a support member can also be used to draw heat away from other components of the head-mounted device to be dissipated by the flow of air within the flow channel.

    Cooling fan and electronic devices with a cooling fan
    4.
    发明授权
    Cooling fan and electronic devices with a cooling fan 有权

    公开(公告)号：US11375647B2

    公开(公告)日：2022-06-28

    申请号：US16791834

    申请日：2020-02-14

    Applicant: Apple Inc.

    Inventor： Arash Naghib Lahouti ,  Jesse T. Dybenko ,  Anthony Joseph Aiello

    IPC: H05K7/20 ,  F04D29/42 ,  H05K5/02 ,  H05K5/00

    Abstract: An electronic device includes a fan assembly that draws air (including heated air) away from components and forces the air out of the electronic device. The fan assembly includes a guide vane located in the fan housing. Subsequent to air entering the fan assembly via the fan inlets, the guide vane is designed to direct the air to a fan outlet. Further, the guide vane is designed and positioned in the fan assembly to limit or prevent flow separation that may cause the heated air to recirculate and may also cause increased turbulence leading to elevated acoustic noise. Furthermore, the guide vane may include a tapered region to allow the heated air to readily flow over the guide vane to limit or prevent a vortex from occurring within the fan assembly. Using the guide vane, the fan assembly drives more air at the same fan speed and lowers noise generation.

    Fan impeller with sections having different blade design geometries
    5.
    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.

    Fan assembly with a self-adjusting gap and electronic devices with a fan assembly
    6.
    发明授权
    Fan assembly with a self-adjusting gap and electronic devices with a fan assembly 有权

    公开(公告)号：US11215193B2

    公开(公告)日：2022-01-04

    申请号：US16792034

    申请日：2020-02-14

    Applicant: Apple Inc.

    Inventor： Halil Berberoglu ,  Cheng Ping Tan ,  Arash Naghib Lahouti ,  Richard A. Herms ,  Jesse T. Dybenko ,  Ashkan Rasouli

    IPC: F04D29/42 ,  F04D17/10

    Abstract: An electronic device with a fan assembly is disclosed. The fan assembly includes an impeller and an insert separated from the impeller by a gap. The fan assembly increases airflow by rotationally driving the impeller. For a sufficient rotational speed of the impeller, the airflow reaches a level that provides a force that displaces the insert. The displacement may include movement and/or compression of the insert. As a result of the displacement, the gap between the impeller and the insert increases. The increased gap reduces the pressure and associated noise that is otherwise caused by the airflow. When the rotational speed of the impeller reduces or ceases, the insert returns to its initial position. In this manner, the fan assembly includes a self-adjusting gap that changes based on the airflow.

    SHROUDED FAN IMPELLER WITH REDUCED COVER OVERLAP
    8.
    发明申请
    SHROUDED FAN IMPELLER WITH REDUCED COVER OVERLAP 有权
    具有减少覆盖面的风扇叶轮

    公开(公告)号：US20150152883A1

    公开(公告)日：2015-06-04

    申请号：US14559672

    申请日：2014-12-03

    Applicant: Apple Inc.

    Inventor： Jesse T. Dybenko ,  Anthony Joseph Aiello ,  Nicholas D. Mancini ,  Jay S. Nigen ,  Arash Naghib Lahouti

    IPC: F04D29/52 ,  F04D19/00

    CPC classification number: F04D25/0613 ,  F04D29/162 ,  F04D29/4226

    Abstract: The described embodiments relate to improving efficiency of a low-profile cooling fan. In one embodiment, an impeller of the cooling fan includes a shroud which covers a central portion of the impeller, thereby allowing a central inlet portion of the blades to have an increased fan blade height when compared to a cooling fan constrained by minimum part tolerances between the fan blades and a portion of the fan housing. In some embodiments, the impeller includes splitter blades that can improve performance of the low-profile cooling fan.

    Abstract translation: 所描述的实施例涉及提高低轮廓冷却风扇的效率。 在一个实施例中，冷却风扇的叶轮包括覆盖叶轮的中心部分的护罩，从而允许叶片的中心入口部分与风扇叶片高度相比具有增加的风扇叶片高度， 风扇叶片和风扇壳体的一部分。 在一些实施例中，叶轮包括可提高低轮廓冷却风扇性能的分流叶片。

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