Invention Grant
- Patent Title: Axial flow fan
- Patent Title (中): 轴流风机
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Application No.: US13771125Application Date: 2013-02-20
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Publication No.: US08794935B2Publication Date: 2014-08-05
- Inventor: Masato Yamamoto , Kenichi Tanaka , Ken Adachi
- Applicant: Nidec Corporation
- Applicant Address: JP Kyoto
- Assignee: Nidec Corporation
- Current Assignee: Nidec Corporation
- Current Assignee Address: JP Kyoto
- Agency: Keating & Bennett, LLP
- Priority: JP2007-154687 20070612
- Main IPC: F04D19/00
- IPC: F04D19/00

Abstract:
In an axial fan including a motor, a substrate that connects ends of a plurality of coils is disposed at a position axially under a bottom portion of a case with an axial gap therebetween. A spacer is interposed between the substrate and the bottom portion, and the substrate is fixed to the spacer. A plurality of through holes provided in the bottom portion are disposed in axial alignment with a plurality of through holes provided in the spacer. An air flow produced by rotation of an impeller at least partially passes through the interior of the case to be discharged to outside of the case through the through holes in the bottom portion so that heat generated inside the motor can be efficiently transferred to outside of the case.
Public/Granted literature
- US20130177461A1 AXIAL FLOW FAN Public/Granted day:2013-07-11
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