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US20050147501A1 - Magnetized fan and method of fabricating the same - Google Patents

Magnetized fan and method of fabricating the same Download PDF

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Publication number
US20050147501A1
US20050147501A1 US10/750,912 US75091204A US2005147501A1 US 20050147501 A1 US20050147501 A1 US 20050147501A1 US 75091204 A US75091204 A US 75091204A US 2005147501 A1 US2005147501 A1 US 2005147501A1
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US
United States
Prior art keywords
fan
magnetic material
magnetic
magnetization
blades
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US10/750,912
Inventor
Ming-Kun Cheng
Chao-Hui Tsai
Chieh-Jen Lin
Jeremy Lee
Shih Chen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SONICEDGE INDUSTRIES CORP
Original Assignee
SONICEDGE INDUSTRIES CORP
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SONICEDGE INDUSTRIES CORP filed Critical SONICEDGE INDUSTRIES CORP
Priority to US10/750,912 priority Critical patent/US20050147501A1/en
Assigned to SONICEDGE INDUSTRIES CORP. reassignment SONICEDGE INDUSTRIES CORP. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHENG, MING-KUN, LEE, JEREMY, LIN, CHIEH-JEN, TSAI, CHAO-HUI
Publication of US20050147501A1 publication Critical patent/US20050147501A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump

Definitions

  • the present invention relates in general to a magnetized fan and a method of fabricating the same, and more particularly, to a fan which is fabricated by injecting magnetic material into the blades of the fan, such that sectors are constructed by multiple N and S poles.
  • the conventional fan blades are made of plastic material, such that a magnetic device such as a magnet in the fan blades, such that fan blads can be used as the fan rotator to interact with the fan stator.
  • the magnetic device occupies an additional volume of space, such that the internal space of the hub is reduced when the fan blades are attached thereto.
  • the space for installing the fan stator is restricted, and the number of magnetic poles and windings are limited to affect the rotating speed of the fan. The performance of the fan is thus seriously degraded.
  • the present invention provides a magnetized fan and a method of fabricating the same.
  • the fan is fabricated by injecting magnetic material into the fan at the time while the blades of the fan are formed. Thereby, the blades are intrinsically magnetic without the requirement for installing a magnetic device. As the magnetic device is not required, the volume of the fan can be reduced.
  • the method for fabricating the fan includes the following steps. Firstly, N and S poles are arranged according to the required sectors of the fan. The magnetic material is then injected into the fan in accordance with the arrangement of the sectors. The sectors are then further processed to generate magnetic force.
  • the fan provided by the present invention includes a hub, a plurality of blades extending radially from a periphery of the hub.
  • the blades include magnetic material to induce a plurality of N and S poles, so as to construct multiple sectors.
  • FIG. 1 shows a bottom view of a fan provided in a first embodiment of the present invention
  • FIG. 2 shows a top view of the fan as illustrated in FIG. 1 ;
  • FIG. 3 shows a flow chart of a method for fabricating the fan.
  • the fan 1 includes a hub 10 and a plurality of blades 10 extending radially from a periphery of the hub 10 .
  • the hub 10 and the blades 11 can be formed integrally or at separate processing steps.
  • the blades 11 can be axial-flow type, centrifugal-flow type, inclined-flow type or transverse-flow type blades to generate and guide a desired air flow.
  • magnetic material is injected into bulk material for fabricating the fan 1 , such that a plurality of N and S poles are formed to construct a plurality of sectors 12 .
  • the sectors 12 are distributed along the periphery of the periphery of the hub 10 . It will be appreciated that the sectors 12 can also be distributed in other positions such as the edges of the blades 11 as shown in FIG. 2 .
  • the magnetic material can be injected into either the hub 10 or the blades 11 only, or both the hub 10 and the blades 11 , such that the sectors 12 can be arranged as required.
  • the fan 1 can be fabricated by various processes such as injection, casting, or powder metallurgy to inject the magnetic material therein. Therefore, when the fan 1 as molded and fabricated is intrinsically magnetic.
  • the magnetic material includes ferrite magnetic material, SmCo magnetic material, NdFeB magnetic material and FeCoNi magnetic material, for example.
  • the present invention further provides a method of fabricating the magnetized fan.
  • the N and S poles are arranged according to the required sectors 12 .
  • the sectors 12 can be categorized into axial-, radial-, radiation- or two-directional, or multi-polar.
  • the arrangement of the N and S poles includes isotropic, anisotropic and multi-polar.
  • the magnetic material is injected into the fan 1 in accordance with the distribution of the sectors 12 .
  • the magnetic material includes ferrite magnetic material, SmCo magnetic material, NdFeB magnetic material and FeCoNi magnetic material, for example.
  • the magnetic material is powdered into magnetic powder, which is further processed. That is, the magnetic material, resin and plastic material are then mixed to form magnetic glue particles, followed by injection, baking, sintering or power metallurgy process.
  • the sectors 12 of the blade 21 are then magnetized to generate magnetic force.
  • the magnetization process includes magnetizing the fan by electrically conducting the magnetic material.
  • a magnetization seat can be used. That is, by disposing the fan 1 in a magnetization seat first, followed by applying a voltage thereto, such that the magnetization discharges transiently to generate a magnetic field and consequently magnetizes the fan 1 .
  • the magnetization structure of the magnetization seat includes single-side multi-pole magnetization, complex magnetization, outer circumference multi-pole magnetization or inner circumference multi-pole magnetization.
  • the sectors 12 are arranged according to various requirements.
  • the magnetic field is then analyzed to design the mold. After the mold is developed, the magnetic material is liquefied and injected into the mold to form the fan 1 .
  • the process for fabricating the magnetized fan is shortened. Further, as the fan is magnetized while it is fabricated, no additional external magnetic device is required. Therefore, the fan can be made with a reduced volume, while the pole number and winding of the fan stator can be maintained or even increased to improve the performance of the fan.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

A magnetized fan and a method of fabricating the same are disclosed. The fan has a hub and a plurality of blades radially extending from a periphery of the hub. The fan is fabricated from magnetic material. Thereby, sectors are formed multiple N and S poles. To fabricate the fan, the N and S poles are arranged in accordance with the requirement of the sectors, and the magnetic material is injected to the fan according to the arrangement of the N and S poles. The magnetic material is then magnetized to generate magnetic force.

Description

    BACKGROUND OF THE INVENTION
  • The present invention relates in general to a magnetized fan and a method of fabricating the same, and more particularly, to a fan which is fabricated by injecting magnetic material into the blades of the fan, such that sectors are constructed by multiple N and S poles.
  • The conventional fan blades are made of plastic material, such that a magnetic device such as a magnet in the fan blades, such that fan blads can be used as the fan rotator to interact with the fan stator.
  • As the conventional fan blades are formed separately with the magnetic device, more processing steps are required. Further, the magnetic device occupies an additional volume of space, such that the internal space of the hub is reduced when the fan blades are attached thereto. As a result, the space for installing the fan stator is restricted, and the number of magnetic poles and windings are limited to affect the rotating speed of the fan. The performance of the fan is thus seriously degraded.
    • SUMMARY OF THE INVENTION
  • The present invention provides a magnetized fan and a method of fabricating the same. The fan is fabricated by injecting magnetic material into the fan at the time while the blades of the fan are formed. Thereby, the blades are intrinsically magnetic without the requirement for installing a magnetic device. As the magnetic device is not required, the volume of the fan can be reduced.
  • The method for fabricating the fan includes the following steps. Firstly, N and S poles are arranged according to the required sectors of the fan. The magnetic material is then injected into the fan in accordance with the arrangement of the sectors. The sectors are then further processed to generate magnetic force.
  • The fan provided by the present invention includes a hub, a plurality of blades extending radially from a periphery of the hub. The blades include magnetic material to induce a plurality of N and S poles, so as to construct multiple sectors.
  • These and other objectives of the present invention will become obvious to those of ordinary skill in the art after reading the following detailed description of preferred embodiments.
  • It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the invention as claimed.
    • BRIEF DESCRIPTION OF ACCOMPANIED DRAWINGS
  • The above objects and advantages of the present invention will be become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings in which:
  • FIG. 1 shows a bottom view of a fan provided in a first embodiment of the present invention;
  • FIG. 2 shows a top view of the fan as illustrated in FIG. 1; and
  • FIG. 3 shows a flow chart of a method for fabricating the fan.
    • DETAILED DESCRIPTION OF EMBODIMENT
  • Referring to FIG. 1, the fan 1 includes a hub 10 and a plurality of blades 10 extending radially from a periphery of the hub 10. The hub 10 and the blades 11 can be formed integrally or at separate processing steps. The blades 11 can be axial-flow type, centrifugal-flow type, inclined-flow type or transverse-flow type blades to generate and guide a desired air flow.
  • In this embodiment, magnetic material is injected into bulk material for fabricating the fan 1, such that a plurality of N and S poles are formed to construct a plurality of sectors 12. In the exemplary embodiment as shown in FIG. 1, the sectors 12 are distributed along the periphery of the periphery of the hub 10. It will be appreciated that the sectors 12 can also be distributed in other positions such as the edges of the blades 11 as shown in FIG. 2. According to specific requirement, the magnetic material can be injected into either the hub 10 or the blades 11 only, or both the hub 10 and the blades 11, such that the sectors 12 can be arranged as required. The fan 1 can be fabricated by various processes such as injection, casting, or powder metallurgy to inject the magnetic material therein. Therefore, when the fan 1 as molded and fabricated is intrinsically magnetic.
  • The magnetic material includes ferrite magnetic material, SmCo magnetic material, NdFeB magnetic material and FeCoNi magnetic material, for example.
  • As shown in FIG. 3, the present invention further provides a method of fabricating the magnetized fan.
  • In the first step, the N and S poles are arranged according to the required sectors 12. The sectors 12 can be categorized into axial-, radial-, radiation- or two-directional, or multi-polar. The arrangement of the N and S poles includes isotropic, anisotropic and multi-polar.
  • The magnetic material is injected into the fan 1 in accordance with the distribution of the sectors 12. In this step, the magnetic material includes ferrite magnetic material, SmCo magnetic material, NdFeB magnetic material and FeCoNi magnetic material, for example. The magnetic material is powdered into magnetic powder, which is further processed. That is, the magnetic material, resin and plastic material are then mixed to form magnetic glue particles, followed by injection, baking, sintering or power metallurgy process.
  • The sectors 12 of the blade 21 are then magnetized to generate magnetic force. The magnetization process includes magnetizing the fan by electrically conducting the magnetic material. In the magnetization process, a magnetization seat can be used. That is, by disposing the fan 1 in a magnetization seat first, followed by applying a voltage thereto, such that the magnetization discharges transiently to generate a magnetic field and consequently magnetizes the fan 1. The magnetization structure of the magnetization seat includes single-side multi-pole magnetization, complex magnetization, outer circumference multi-pole magnetization or inner circumference multi-pole magnetization.
  • In addition, before performing the above step, the sectors 12 are arranged according to various requirements. The magnetic field is then analyzed to design the mold. After the mold is developed, the magnetic material is liquefied and injected into the mold to form the fan 1.
  • Thereby, the magnetized fan can be obtained.
  • By the method provided by the present invention, the process for fabricating the magnetized fan is shortened. Further, as the fan is magnetized while it is fabricated, no additional external magnetic device is required. Therefore, the fan can be made with a reduced volume, while the pole number and winding of the fan stator can be maintained or even increased to improve the performance of the fan.
  • While the present invention has been particularly shown and described with reference to preferred embodiments thereof, it will be understood by those of ordinary skill in the art th various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.

Claims (17)

1. A method of fabricating a magnetized fan, comprising:
a) performing arrangement of N and S poles according required magnetic sectors of the fan;
b) injecting a magnetic material into the fan according to the arrangement of the N and S poles; and
c) magnetizing the magnetic sectors of the fan to generate a magnetic force.
2. The method as claimed in claim 1, wherein the magnetic sectors include axial-, radial-, radiation- or two-directional, or multi-polar sectors.
3. The method as claimed in claim 1 wherein the arrangement of the N and S poles includes isotropic, anisotropic or multi-polar arrangement.
4. The method as claimed in claim 1, wherein the magnetic material includes ferrite magnetic material, SmCo magnetic material, NdFeB magnetic material or FeCoNi magnetic material.
5. The method as claimed in claim 1, wherein the magnetic material is powdered and processed to form magnetic glue particles.
6. The method as claimed in claim 5, further includes mixing the magnetic material, resin and plastic material to form particles.
7. The method as claimed in claim 1, wherein step (b) includes injecting the magnetic material by injection, baking, sintering or powder metallurgy.
8. The method as claimed in claim 1, further comprising performing magnetic field analysis to design a mold, fusing the magnetic material, and injecting the fused magnetic material into the mold before step (b).
9. The method as claimed in claim 1, wherein the magnetization step in step (c) includes conducting electricity of the magnetic material.
10. The method as claimed in claim 1, further comprising a step of using a magnetization seat.
11. The method as claimed in claim 10, wherein step (b) comprises placing the fan in the magnetization seat, and applying a voltage to the magnetization seat to generate a magnetic field, so as to magnetize the fan.
12. The method as claimed in claim 10, wherein the magnetization seat includes a single-side magnetization structure, a complex magnetization structure, outer circumference multi-pole magnetization structure, or an inner circumference multi-pole magnetization.
13. A magnetized fan, including a hub and a plurality of blades radially extending from a periphery of the hub, wherein the magnetic fan includes a built-in magnetic material to form a plurality of magnetic sectors constructed by a plurality of N and S poles.
14. The fan as claimed in claim 12, wherein the blades include axial-flow blades, centrifugal-flow blades, inclined-flow blades or transverse-flow blades.
15. The fan as claimed in claim 12, wherein the magnetic sectors are distributed in the hub, the periphery of the hub, the blades or terminuses of the blades.
16. The fan as claimed in claim 13, wherein the magnetic material is built in all of the fan, or a portion of the fan.
17. The fan as claimed in claim 13, wherein the magnetic material includes ferrite magnetic material, SmCo magnetic material, NdFeB magnetic material or FeCoNi magnetic material.
US10/750,912 2004-01-05 2004-01-05 Magnetized fan and method of fabricating the same Abandoned US20050147501A1 (en)

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Application Number Priority Date Filing Date Title
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060016929A1 (en) * 2004-07-23 2006-01-26 Mohr John A Counter rotating ducted fan having a permanent magnet drive
GB2432635A (en) * 2005-11-29 2007-05-30 Stephen Desmond Lewis Magnetised turbofan engine fan blades
US20130039785A1 (en) * 2011-05-02 2013-02-14 Krones Ag Device for Moving a Fluid
US20130093379A1 (en) * 2011-10-18 2013-04-18 Hon Hai Precision Industry Co., Ltd. Electronic device with generator unit
US20130189130A1 (en) * 2012-01-20 2013-07-25 Bor-Haw Chang Fan motor structure
US20150132162A1 (en) * 2013-11-08 2015-05-14 Cooler Master Co., Ltd. Slim-type fan structure
IT201700049231A1 (en) * 2017-05-08 2018-11-08 Daniele Ciurleo ENGINE WITHOUT CRAWLING CONTACTS EQUIPPED WITH A ROTOR MADE OF A MULTIPALING PROPELLER
US10240607B2 (en) * 2016-02-26 2019-03-26 Kongsberg Automotive, Inc. Blower assembly for a vehicle seat
US10473107B1 (en) 2017-11-29 2019-11-12 Stephen Thomas Newton Variable performance axial flow ducted fan with high efficiency and reduced current drawn
EP3680488A1 (en) * 2019-01-11 2020-07-15 Rolls-Royce plc Electric machine having permanent magnets embedded in blades
US20200329583A1 (en) * 2020-06-27 2020-10-15 Krishnakumar Varadarajan Fan for an electronic device
USD1043943S1 (en) * 2021-06-25 2024-09-24 Transportation Ip Holdings, Llc Fan

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060016929A1 (en) * 2004-07-23 2006-01-26 Mohr John A Counter rotating ducted fan having a permanent magnet drive
US7032859B2 (en) * 2004-07-23 2006-04-25 The United States Of America As Represented By The Secretary Of The Navy Counter rotating ducted fan having a permanent magnet drive
GB2432635A (en) * 2005-11-29 2007-05-30 Stephen Desmond Lewis Magnetised turbofan engine fan blades
GB2432635B (en) * 2005-11-29 2007-10-17 Stephen Desmond Lewis The over clocked turbofan
US20130039785A1 (en) * 2011-05-02 2013-02-14 Krones Ag Device for Moving a Fluid
EP2520805A3 (en) * 2011-05-02 2014-11-19 Krones AG Device for moving a fluid
US20130093379A1 (en) * 2011-10-18 2013-04-18 Hon Hai Precision Industry Co., Ltd. Electronic device with generator unit
US20130189130A1 (en) * 2012-01-20 2013-07-25 Bor-Haw Chang Fan motor structure
US20150132162A1 (en) * 2013-11-08 2015-05-14 Cooler Master Co., Ltd. Slim-type fan structure
US9551348B2 (en) * 2013-11-08 2017-01-24 Cooler Master Co., Ltd. Slim-type fan structure
US10240607B2 (en) * 2016-02-26 2019-03-26 Kongsberg Automotive, Inc. Blower assembly for a vehicle seat
IT201700049231A1 (en) * 2017-05-08 2018-11-08 Daniele Ciurleo ENGINE WITHOUT CRAWLING CONTACTS EQUIPPED WITH A ROTOR MADE OF A MULTIPALING PROPELLER
US10473107B1 (en) 2017-11-29 2019-11-12 Stephen Thomas Newton Variable performance axial flow ducted fan with high efficiency and reduced current drawn
EP3680488A1 (en) * 2019-01-11 2020-07-15 Rolls-Royce plc Electric machine having permanent magnets embedded in blades
US11255216B2 (en) 2019-01-11 2022-02-22 Rolls-Royce Plc Electric machine
US20200329583A1 (en) * 2020-06-27 2020-10-15 Krishnakumar Varadarajan Fan for an electronic device
US11895803B2 (en) * 2020-06-27 2024-02-06 Intel Corporation Fan for an electronic device
TWI883077B (en) * 2020-06-27 2025-05-11 美商英特爾公司 Fan, electronic device and method for cooling electronic device
USD1043943S1 (en) * 2021-06-25 2024-09-24 Transportation Ip Holdings, Llc Fan

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Legal Events

Date Code Title Description
AS Assignment

Owner name: SONICEDGE INDUSTRIES CORP., TAIWAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CHENG, MING-KUN;TSAI, CHAO-HUI;LIN, CHIEH-JEN;AND OTHERS;REEL/FRAME:014875/0026

Effective date: 20031224

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION