US20060078418A1 - Device enhancing steadiness of a fan between stator set and rotor thereof - Google Patents

Device enhancing steadiness of a fan between stator set and rotor thereof Download PDF

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Publication number
US20060078418A1
US20060078418A1 US10/959,969 US95996904A US2006078418A1 US 20060078418 A1 US20060078418 A1 US 20060078418A1 US 95996904 A US95996904 A US 95996904A US 2006078418 A1 US2006078418 A1 US 2006078418A1
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US
United States
Prior art keywords
fan
rotor
steadiness
stator set
stator
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
US10/959,969
Inventor
Wei-chen Kuo
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.)
Asia Vital Components Co Ltd
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US10/959,969 priority Critical patent/US20060078418A1/en
Assigned to ASIA VITAL COMPONENT CO., LTD. reassignment ASIA VITAL COMPONENT CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KUO, WEI-CHEN
Publication of US20060078418A1 publication Critical patent/US20060078418A1/en
Abandoned legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
    • 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
    • F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator

Abstract

A device enhancing steadiness of a fan between stator set and rotor thereof comprises a fan stator set and a fan rotor. The hub part of the fan rotor is joined with a magnetic piece to absorb a metal element attached to the coil of the fan stator to reduce the fan rotor swaying during rotating so as to enhance steadiness of the fan and to reduce generated noise.

Description

    BACKGROUND OF THE INVENTION
  • 1. Field of the Invention
  • The present invention is related to a device enhancing steadiness between stator set and rotor and particularly to a device, which is provided with a magnetic piece fixedly attached to the hub part of the fan rotor to absorb a metal element on the coil of the fan stator for enhancing steadiness and reducing noise during rotating.
  • 2. Brief Description of the Related Art
  • The conventional way to dissipate heat generated from the running electronic components mostly is that a cooling fan adopted to speed up heat dissipation. But, airflow and noise produced closely relate to steadiness of fan motor during rotating. Referring to FIG. 1, the cooling fan 1 comprises a fan rotor 11, a coil 12 and a frame 13. The fan rotor 11 has a hub part 111 with a shaft 112 and a magnet 113 is attached to the inner surface of the hub part 111. The coil 12 is joined to a silicon iron 121 and the frame 13 has a bearing sleeve 131 with a bearing is fixedly attached to the bearing sleeve 131. The shaft 112 is movably joined to the bearing 132 such that the fan rotor 11 can rotate by way of interaction between the magnet 113 and the coil 12. However, the fan rotor 11 occurs sway resulting from a clearance between the shaft 112 and the bearing 132 during rotating to influence steadiness of fan rotor and increase noise. In this way, the airflow produced by the cooling fan 1 and the life span of the cooling fan.
    • SUMMARY OF THE INVENTION
  • An object of the present invention is to provide a device, which can enhance steadiness of a fan between a stator set and a rotor thereof.
  • Another object of the present invention is to provide a device enhancing steadiness of a fan between a stator and a rotor thereof for attenuating noise generated from the fan.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • The detail structure, the applied principle, the function and the effectiveness of the present invention can be more fully understood with reference to the following description and accompanying drawings, in which:
  • FIG. 1 is a side sectional view of a conventional fan with a stator and a rotor;
  • FIG. 2 is an exploded perspective view of the first preferred embodiment according the present invention;
  • FIG. 3 is another exploded perspective view of the first preferred embodiment according to the present invention;
  • FIG. 4 is an assembled perspective view of the first preferred embodiment according to the present invention;
  • FIG. 5 is another assembled perspective view of the first preferred embodiment according to the present invention;
  • FIG. 6 is a sectional view of the first embodiment according to the present invention;
  • FIG. 7 is an exploded perspective view of the second embodiment according to the present invention;
  • FIG. 8 is an assembled perspective view of the second embodiment according to the present invention; and
  • FIG. 9 is a sectional view of the second preferred embodiment according to the present invention.
    • DETAILED DESCRIPTION OF THE INVENTION
  • Referring to FIGS. 2 to 6, the first embodiment of a device enhancing stability between stator set and rotor according to the present invention comprises a fan rotor 21, a fan stator set 22 and a frame 23. The fan rotor 21 is provided with a hub part 211 and the hub part 211 is attached with a plurality of fan blades 212 at the outer annular surface thereof and is provided with a shaft 213 at the inner side thereof. The fan stator set 22 is composed of a coil 221 and a metal element 222. The frame 23 is provided with a bearing sleeve 231.
  • The metal element 222 is attached to the coil 221 and a bearing 232 is fixedly joined to the inner side of the bearing sleeve 231. The coil 221 is joined to the outer side of the bearing sleeve 231. The magnet 214 is arranged at the inner surface of the hub part 211. A preset magnetic piece 24 is disposed at the inner bottom of the hub part 211. The fan rotor 21 is movably attached to the bearing 232 in the baring sleeve 231.
  • Referring to FIG. 6 again, the magnetic piece 24 can absorb the metal element 222 on the fan stator set 22 to eliminate a clearance between the shaft and the bearing when the fan rotor 21 rotates. Thus, sway of the fan rotor 21 in the bearing 232 can reduced to enhance steadiness of the fan in rotation and noise can be attenuated to prolong life span of the cooling fan.
  • Referring to FIGS. 7 to 9, the second preferred embodiment is illustrated. The overall structure and function almost the same as the first preferred embodiment and no detail will be described for the same parts in the two embodiments. The difference of the second embodiment from the first embodiment is in that the fan rotor 21 of the hub part 311 has a fixing part 31 la at the outer circular surface thereof for being fixedly joined with a magnetic piece 34. In this way, the magnetic piece 34 can absorb the metal element 222 to allow the fan rotor 21 running steadily with attenuated noise.
  • Further, the hub part 211 can be made of magnetic material to intensify the absorbing force of the hub part 211 exerting to the metal element 222 on the fan stator set 22. Hence, the steadiness of the cooling fan during rotating can be enhanced and noise during rotating can be attenuated effectively.
  • While the invention has been described with referencing to preferred embodiments thereof, it is to be understood that modifications or variations may be easily made without departing from the spirit of this invention, which is defined by the appended claims.

Claims (4)

1. A device enhancing steadiness of a fan between stator set and rotor thereof, comprising:
a frame;
a fan stator set, being provided on the frame, having a coil and a metal element on the coil; and
a fan rotor, being movably joined to the stator and having a hub part;
characterized in that the hub is joined with a magnetic piece to absorb the metal element;
whereby, steadiness of the fan during rotating can be enhanced and noise during rotating can be attenuated.
2. The device enhancing steadiness of a fan between stator set and rotor thereof as defined in claim 1, wherein the magnetic piece is mounted at the inner bottom of the hub part on the rotor.
3. The device enhancing steadiness of a fan between stator set and rotor thereof as defined in claim 1, wherein the hub part is provided with a fixing part at an outer circular surface and the magnetic piece is disposed in the fixing part.
4. A device enhancing steadiness of a fan between stator set and rotor thereof, comprising:
a fan stator set, having a coil and a metal element attached to the coil; and
a fan rotor, being movably joined to the stator set;
characterized in that the hub part is made of magnetic material to be capable of absorbing the metal element;
whereby, steadiness of the fan during rotating can be enhanced and noise during rotating can be attenuated.
US10/959,969 2004-10-08 2004-10-08 Device enhancing steadiness of a fan between stator set and rotor thereof Abandoned US20060078418A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10/959,969 US20060078418A1 (en) 2004-10-08 2004-10-08 Device enhancing steadiness of a fan between stator set and rotor thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/959,969 US20060078418A1 (en) 2004-10-08 2004-10-08 Device enhancing steadiness of a fan between stator set and rotor thereof

Publications (1)

Publication Number Publication Date
US20060078418A1 true US20060078418A1 (en) 2006-04-13

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US10/959,969 Abandoned US20060078418A1 (en) 2004-10-08 2004-10-08 Device enhancing steadiness of a fan between stator set and rotor thereof

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008128593A1 (en) * 2007-04-20 2008-10-30 Daimler Ag Blower for mounting on a vehicle seat

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2937803A (en) * 1957-06-05 1960-05-24 Eastern Ind Inc Air flow cooling apparatus and drive therefor
US4286198A (en) * 1978-05-11 1981-08-25 Valbrev S.A.R.L. Direct current motor unit without commutator
US4861237A (en) * 1985-11-07 1989-08-29 Shicoh Engineering Co., Ltd. Axial-flow fan apparatus
US6648751B1 (en) * 2002-06-05 2003-11-18 Juni Pong Airflow balancer for ventilation outlet
US6724106B1 (en) * 2003-02-27 2004-04-20 Sunonwealth Electric Machine Industry Co., Ltd. Miniature brushless dc fan motor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2937803A (en) * 1957-06-05 1960-05-24 Eastern Ind Inc Air flow cooling apparatus and drive therefor
US4286198A (en) * 1978-05-11 1981-08-25 Valbrev S.A.R.L. Direct current motor unit without commutator
US4861237A (en) * 1985-11-07 1989-08-29 Shicoh Engineering Co., Ltd. Axial-flow fan apparatus
US6648751B1 (en) * 2002-06-05 2003-11-18 Juni Pong Airflow balancer for ventilation outlet
US6724106B1 (en) * 2003-02-27 2004-04-20 Sunonwealth Electric Machine Industry Co., Ltd. Miniature brushless dc fan motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008128593A1 (en) * 2007-04-20 2008-10-30 Daimler Ag Blower for mounting on a vehicle seat

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Legal Events

Date Code Title Description
AS Assignment

Owner name: ASIA VITAL COMPONENT CO., LTD., TAIWAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KUO, WEI-CHEN;REEL/FRAME:015880/0945

Effective date: 20041001

STCB Information on status: application discontinuation

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