公开(公告)号：US20180070472A1

公开(公告)日：2018-03-08

申请号：US15682291

申请日：2017-08-21

Applicant: Apple Inc.

Inventor： Anthony J. AIELLO ,  Jonathan L. BERK ,  Karen CHENG ,  Jesse T. DYBENKO ,  Trevor EDMONDS ,  Kwonil D. FLEISCHMAN ,  Richard A. HERMS ,  Eric A. KNOPF ,  Arash NAGHIB LAHOUTI ,  Brad L. PATTON

IPC: H05K7/20 ,  G06F1/20

CPC classification number: H05K7/20145 ,  F04D17/16 ,  F04D25/0613 ,  F04D29/441 ,  G06F1/1658 ,  G06F1/1662 ,  G06F1/20 ,  G06F1/203 ,  H01L23/4006 ,  H01L23/467

Abstract: In an exemplary electronic device with a cooling fan, a fan assembly is attached to a keyboard assembly of the electronic device. The fan assembly includes an impeller at least partially inside a fan enclosure. The fan enclosure has, on a surface, an inlet opening and an external protrusion. The electronic device further includes a bottom case. The fan assembly is positioned between the keyboard assembly and the bottom case and oriented such that the inlet opening and the external protrusion face the bottom case. The external protrusion maintains a passage between the fan enclosure and the bottom case that allows air to enter the inlet opening and also resists interference between the rotating impeller and the stationary bottom case.

公开(公告)号：US20170067470A1

公开(公告)日：2017-03-09

申请号：US15183664

申请日：2016-06-15

Applicant: Apple Inc.

Inventor： Brad L. PATTON ,  Anthony J. AIELLO ,  Jesse T. DYBENKO

IPC: F04D17/10 ,  F04D25/06

Abstract: Electronic devices have peripheral drive centrifugal fans having smaller hubs and increased air flows to manage heat levels within the electronic device. A peripheral drive centrifugal fan includes a fan housing, an impeller including a plurality of blades, and a plurality of stacked inductor groups radially disposed about the impeller. Some of the blades have magnetically active portions. Each stacked inductor group includes first and second coils configured to impart a variable magnetic force to the magnetically active portion of a blade to drive the impeller along a rotational direction. The first and second coils can be selectively energizable independently from each other to provide greater control of the impeller.

Abstract translation: 电子设备具有外围驱动离心风扇，其具有较小的毂和增加的空气流量以管理电子设备内的热量。 外围驱动离心风扇包括风扇壳体，包括多个叶片的叶轮和围绕叶轮径向设置的多个堆叠的电感器组。 一些叶片具有磁性活性部分。 每个堆叠的电感器组包括第一和第二线圈，其被配置为向叶片的磁性活动部分施加可变的磁力，以沿着旋转方向驱动叶轮。 第一和第二线圈可以彼此独立地选择性地通电，以提供更大的叶轮控制。