Invention Grant
- Patent Title: Fan flow directing features, systems and methods
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Application No.: US16452074Application Date: 2019-06-25
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Publication No.: US11339793B2Publication Date: 2022-05-24
- Inventor: Anthony J. Aiello , Cheng P. Tan , Jesse T. Dybenko , Arash Naghib Lahouti , Eric R. Prather , Philippe P. Herrou , Ashkan Rasouli , Brett W. Degner , Michael E. LeClerc
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Fletcher Yoder PC
- Main IPC: F04D27/02
- IPC: F04D27/02 ; F04D29/40 ; F04D1/10 ; F04D29/32

Abstract:
Systems and methods are provided for mitigating recirculation of backflow fluid through a fan. The fan includes a housing having a channel that extends from an inlet to an outlet of the housing. A rotor assembly is positioned within the channel and is configured to direct a fluid flow from the inlet to the outlet. The rotor assembly includes a hub, a plurality of fan blades, and a shroud disposed about a circumference of the fan blades, where a radial gap extends between the shroud and the housing. The radial gap is configured to receive a portion of the fluid flow from the outlet as backflow fluid. The rotor assembly also includes an inlet flange that is configured receive the backflow fluid from the radial gap and to direct the backflow fluid in a direction away from the inlet prior to discharge of the backflow fluid from the radial gap.
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