公开(公告)号：US20240397665A1

公开(公告)日：2024-11-28

申请号：US18202229

申请日：2023-05-25

Applicant: Apple Inc.

Inventor： Jifang TIAN ,  Anthony J. AIELLO ,  Arash NAGHIB LAHOUTI ,  Cheng P. TAN

IPC: H05K7/20

Abstract: A thermal module may include a valve used to promote unidirectional flow. The valve may be formed from several flow barriers designed to provide minimal resistance to a refrigerant while flowing in one direction, but provide significant resistance to flow in the opposite direction. The thermal module may include a void. The refrigerant may flow or circulate in a loop around the void. Using the valve for unidirectional flow, a thermal module may provide enhanced thermal transport capabilities.

公开(公告)号：US20210257882A1

公开(公告)日：2021-08-19

申请号：US16791971

申请日：2020-02-14

Applicant: Apple Inc.

Inventor： Jifang TIAN ,  Cheng Ping TAN ,  Enoch MYLABATHULA

IPC: H02K9/06 ,  G06F1/20

Abstract: A fan motor suitable for use in an electronic device, such as a consumer electronic device, is disclosed. The fan motor includes a stator and a rotor. In order to minimize a varying torque applied to the rotor, the stator includes modifications. For example, the stator includes stator teeth, each with an arc defined by a radius of curvature that varies. The radius (from a reference point to the arc) can vary in accordance with a sinusoidal curve. Furthermore, the corners of each stator tooth may be rounded. The rounded corners of the stator teeth may include a uniform (or constant, non-varying) radius of curvature. These enhancement are designed to provide a more uniform torque by the stator to the rotor. As a result, the rotation of the rotor is subject to smaller fluctuations, and the fan motor undergoes less vibration and generates less acoustical noise.