Fan device

Patent metadata

Field	Value
Publication number	US-9647516-B2
Application number	US-201414527195-A
Country	US
Kind code	B2
Filing date	Oct 29, 2014
Priority date	Aug 27, 2014
Publication date	May 9, 2017
Grant date	May 9, 2017

Abstract

A fan device includes two magnetic members, a fan and a wire. The fan is disposed between the magnetic members, and includes a rotatable hub and a plurality of fan blades radiating from the hub. The wire is mounted on the fan, and has two electrode ends and a plurality of induction portions that are disposed between the electrode ends. Each induction portion is coupled to a respective fan blade, and is co-rotatable with the respective fan blade to intersect a magnetic field between the magnetic members to thereby generate an induced current that flows toward the electrode ends of the wire.

First claim

What is claimed is:

1. A fan device comprising:
two spaced-apart magnetic members arranged such that one side of one of said magnetic members faces one side of the other one of said magnetic members and has a magnetic polarity opposite to that of said one side of said the other one of said magnetic members, said magnetic members defining a magnetic field therebetween;
a fan disposed between said magnetic members, and including a rotatable hub and a plurality of angularly spaced-apart fan blades that radiate from said hub; and
a wire mounted on said fan, and having two distal electrode ends and a plurality of induction portions, each of said induction portions being coupled to a respective one of said fan blades, and being co-rotatable with the respective one of said fan blades to intersect the magnetic field to thereby generate an induced current that flows toward said electrode ends of said wire, wherein:
said hub of said fan is rotatable about a central axis;
each of said fan blades has opposite top and bottom edges extending from said hub, and a lateral edge interconnecting distal ends of said top and bottom edges which are distal from the central axis; and
each of said induction portions of said wire being coupled to said lateral edge of the respective one of said fan blades, and having an end that is registered with an intersection between said lateral edge and said top edge of the respective one of said fan blades, and an opposite end that is registered with an intersection between said lateral edge and said bottom edge of the respective one of said fan blades.

2. The fan device as claimed in claim 1 , further comprising a collector mechanism that includes first and second collector rings connected electrically and respectively to said electrode ends of said wire, and that is adapted to be connected electrically to a converting circuit.

3. The fan device as claimed in claim 2 , wherein each of said first and second collector rings of said collector mechanism includes an inner ring segment, and an outer ring segment that surrounds and is spaced apart from said inner ring segment and that is adapted to be connected electrically to the converting circuit, said inner ring segment of each of said first and second collector rings being rotatable relative to said outer ring segment and being connected electrically to a respective one of said electrode ends of said wire for receiving the induced current transmitted from the respective one of said electrode ends, the induced current flowing into said inner ring segments of said first and second collector rings and being transmitted to the converting circuit through said outer ring segments.

4. The fan device as claimed in claim 3 , wherein each of said first and second collector rings is configured as a bearing.

5. The fan device as claimed in claim 3 , wherein said collector mechanism further includes a plurality of support columns mounted on said hub and each connected to said inner ring segment of a corresponding one of said first and second collector rings so that said inner ring segments of said first and second collector rings are co-rotatable with said fan.

6. The fan device as claimed in claim 5 , wherein:
said hub of said fan is rotatable about a central axis; and
said support columns have different lengths such that said first and second collector rings are arranged along the central axis.

7. The fan device as claimed in claim 6 , wherein said first and second collector rings are disposed at the same side of said hub.

8. The fan device as claimed in claim 7 , wherein said wire further has a plurality of first transmitting portions coupled respectively to said top edges of said fan blades, and a plurality of second transmitting portions coupled respectively to said bottom edges of said fan blades, each of said induction portions being disposed between a respective one of said first transmitting portions and a respective one of said second transmitting portions.

9. The fan device as claimed in claim 8 , wherein said first collector ring is disposed over said second collector ring, said support columns including two first support columns that are connected to said inner ring segment of said first collector ring, and two second support columns that are connected to said inner ring segment of said second collector ring, said wire further having two extending portions that extend from said first transmitting portions, said electrode ends of said wire being formed respectively at distal ends of said extending portions, one of said extending portions being coupled to one of said first support columns, the other one of said extending portions being coupled to one of said second support columns.

10. The fan device as claimed in claim 9 , further comprising a housing having an inner surface that defines a receiving space receiving said fan, said wire, said magnetic members and said collector mechanism therein, said magnetic members being fixedly mounted to said inner surface of said housing, said outer ring segments of said first and second collector rings being connected fixedly to said inner surface of said housing.

11. The fan device as claimed in claim 1 , wherein each of said magnetic members has a height in a direction parallel to the central axis that is larger than that between said top and bottom edges of each of said fan blades.

12. The fan device as claimed in claim 11 , wherein each of said magnetic members has a length in a direction perpendicular to the central axis that is larger than a radial length of said fan.

13. A fan device comprising:
two spaced-apart magnetic members arranged such that one side of one of said magnetic members faces one side of the other one of said magnetic members and has a magnetic polarity opposite to that of said one side of said the other one of said magnetic members, said magnetic members defining a magnetic field therebetween;
a fan disposed between said magnetic members, and including a rotatable hub and a plurality of angularly spaced-apart fan blades that radiate from said hub;
a wire mounted on said fan, and having two distal electrode ends and a plurality of induction portions, each of said induction portions being coupled to a respective one of said fan blades, and being co-rotatable with the respective one of said fan blades to intersect the magnetic field to thereby generate an induced current that flows toward said electrode ends of said wire; and
a collector mechanism that includes first and second collector rings connected electrically and respectively to said electrode ends of said wire, and that is adapted to be connected electrically to a converting circuit;
wherein each of said first and second collector rings of said collector mechanism includes an inner ring segment, and an outer ring segment that surrounds and is spaced apart from said inner ring segment and that is adapted to be connected electrically to the converting circuit, said inner ring segment of each of said first and second collector rings being rotatable relative to said outer ring segment and being connected electrically to a respective one of said electrode ends of said wire for receiving the induced current transmitted from the respective one of said electrode ends, the induced current flowing into said inner ring segments of said first and second collector rings and being transmitted to the converting circuit through said outer ring segments; and
wherein said collector mechanism further includes a plurality of support columns mounted on said hub and each connected to said inner ring segment of a corresponding one of said first and second collector rings so that said inner ring segment

Assignees

• Wistron Corp
• Wistron Corp

Inventors

• Zhao Min

Classifications

• H01R39/643

  through ball or roller bearing · CPC title

• F04D25/0606

  the electric motor being specially adapted for integration in the pump · CPC title

• H02K3/04

  Windings characterised by the conductor shape, form or construction, e.g. with bar conductors · CPC title

• F04D29/38

  Blades {(for axial flow compressors F04D29/324)} · CPC title

• H02K3/18

  Windings for salient poles · CPC title