US20070140836A1 - Blower - Google Patents

Blower Download PDF

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Publication number
US20070140836A1
US20070140836A1 US11/309,579 US30957906A US2007140836A1 US 20070140836 A1 US20070140836 A1 US 20070140836A1 US 30957906 A US30957906 A US 30957906A US 2007140836 A1 US2007140836 A1 US 2007140836A1
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US
United States
Prior art keywords
blower
fan blades
cylinder
fan blade
blade assembly
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
US11/309,579
Inventor
Chih-Hang Chao
Yu-Hsu Lin
Jeng-Da Wu
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.)
Hon Hai Precision Industry Co Ltd
Original Assignee
Hon Hai Precision Industry Co Ltd
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 Hon Hai Precision Industry Co Ltd filed Critical Hon Hai Precision Industry Co Ltd
Assigned to HON HAI PRECISION INDUSTRY CO., LTD. reassignment HON HAI PRECISION INDUSTRY CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHAO, CHIH-HANG, LIN, YU-HSU, WU, JENG-DA
Publication of US20070140836A1 publication Critical patent/US20070140836A1/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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
    • 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
    • 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
    • F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes

Definitions

  • the present invention relates to a blower, and particularly to a blower for dissipating heat from electronic devices.
  • a heat dissipation assembly is used to dissipate heat from the electronic device.
  • the heat dissipation assembly frequently comprises a fan facilitating removal of heat from the electronic device.
  • FIG. 3 shows a conventional blower.
  • the blower includes a fan blade assembly 10 , a rotor 20 , a stator 30 , and a scroll housing 40 .
  • the stator 30 is secured on a bottom panel 41 of the scroll housing 40 .
  • the rotor 20 is rotatably mounted around the stator 30 .
  • the fan blade assembly 10 is secured around the rotor 20 .
  • the fan blade assembly 10 includes a cylinder 11 , an annular upper ring 12 , an annular lower outer ring 13 , an annular lower inner ring 14 , and fan blades 15 .
  • the cylinder 11 is set in the center of the fan blade assembly 10 and fixed with the rotor 20 .
  • the fan blades 15 are set surrounding the cylinder 11 and fixed by the upper ring 12 , the lower outer ring 13 , and the lower inner ring 14 .
  • the cylinder 11 is coupled to the lower inner ring 14 .
  • the blower works at high speed to provide greater airflow, however, with greater speed comes greater noise.
  • the blower includes a fan blade assembly.
  • the fan blade assembly includes a cylinder, fan blades, and damping ribs.
  • the fan blades are fixed by an upper ring, a lower outer ring, and a lower inner ring.
  • the cylinder is surrounded by the fan blades and coupled to the lower inner ring.
  • the damping ribs are set between each two adjacent fan blades for enhancing structural integrity of the fan blade assembly thereby acting as a vibration damper of the fan blades when the blower operates at high-speed.
  • FIG. 1 is an exploded view of a blower, in accordance with a preferred embodiment of the present invention
  • FIG. 2 is an enlarged view of the circled portion ⁇ of FIG. 1 ;
  • FIG. 3 is an exploded view of a conventional blower.
  • a blower in accordance with a preferred embodiment of the present invention includes a fan blade assembly 100 , a rotor 200 , a stator 300 , and a scroll housing 400 .
  • the fan blade assembly 100 includes a cylinder 110 , an annular upper ring 120 , an annular lower outer ring 130 , an annular lower inner ring 140 , a plurality of spaced fan blades 150 , and damping ribs 160 .
  • the cylinder 110 is fixed to and surrounding the rotor 200 .
  • the fan blades 150 are arranged along a circumferential face, which surrounds and spaces the cylinder 110 .
  • the upper ring 120 connects with upper ends of the fan blades 150 .
  • the lower outer ring 130 connects with one side of lower ends of the fan blades 150 .
  • the lower inner ring 140 interconnects an opposite side of the lower ends of the fan blades 150 with the cylinder 110 .
  • the damping ribs 160 are set between each two adjacent fan blades 150 and arranged at a circle concentric with the cylinder 110 . Adjacent two damping ribs 160 are separated from each other by one of the fan blades 150 .
  • the stator 300 is secured on the bottom panel 410 of the scroll housing 400 .
  • the rotor 200 is rotatably mounted to the stator 300 .
  • the rotor 200 drives the fan blade assembly 100 to rotate via the cylinder 110 .
  • the damping ribs 160 enhance structural integrity of the fan blade assembly 100 thereby acting as a vibration damper of the fan blades 150 when the blower operates at high-speed.

Abstract

A blower includes a fan blade assembly. The fan blade assembly includes a cylinder, fan blades, and damping ribs. The fan blades are fixed by an upper ring, a lower outer ring, and a lower inner ring. The cylinder is surrounded by the fan blades and coupled to the lower inner ring. The damping ribs are set between each two adjacent fan blades for enhancing structural integrity of the fan blade assembly thereby acting as a vibration damper of the fan blades when the blower operates at high-speed.

Description

    FIELD OF THE INVENTION
  • The present invention relates to a blower, and particularly to a blower for dissipating heat from electronic devices.
    • DESCRIPTION OF RELATED ART
  • Electronic devices such as central processing units (CPUs) frequently generate large amounts of heat during normal operation, which can destabilize operation of the electronic device and possibly cause damage. Oftentimes, a heat dissipation assembly is used to dissipate heat from the electronic device. The heat dissipation assembly frequently comprises a fan facilitating removal of heat from the electronic device.
  • As computer technology continues to advance, the electronic devices of computers are being made to provide faster operational speeds and greater functional capabilities, which cause more heat to be generated. Therefore, high-speed blowers are used to dissipate the generated heat instead of ordinary fans. FIG. 3 shows a conventional blower. The blower includes a fan blade assembly 10, a rotor 20, a stator 30, and a scroll housing 40. The stator 30 is secured on a bottom panel 41 of the scroll housing 40. The rotor 20 is rotatably mounted around the stator 30. The fan blade assembly 10 is secured around the rotor 20. The fan blade assembly 10 includes a cylinder 11, an annular upper ring 12, an annular lower outer ring 13, an annular lower inner ring 14, and fan blades 15. The cylinder 11 is set in the center of the fan blade assembly 10 and fixed with the rotor 20. The fan blades 15 are set surrounding the cylinder 11 and fixed by the upper ring 12, the lower outer ring 13, and the lower inner ring 14. The cylinder 11 is coupled to the lower inner ring 14. The blower works at high speed to provide greater airflow, however, with greater speed comes greater noise.
  • What is needed, therefore, is a high-speed blower with a reduced noise level.
    • SUMMARY OF THE INVENTION
  • A high-speed blower with reduced noise is provided. In a preferred embodiment, the blower includes a fan blade assembly. The fan blade assembly includes a cylinder, fan blades, and damping ribs. The fan blades are fixed by an upper ring, a lower outer ring, and a lower inner ring. The cylinder is surrounded by the fan blades and coupled to the lower inner ring. The damping ribs are set between each two adjacent fan blades for enhancing structural integrity of the fan blade assembly thereby acting as a vibration damper of the fan blades when the blower operates at high-speed.
  • Other advantages and novel features will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, in which:
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is an exploded view of a blower, in accordance with a preferred embodiment of the present invention;
  • FIG. 2 is an enlarged view of the circled portion □ of FIG. 1; and
  • FIG. 3 is an exploded view of a conventional blower.
    •  DETAILED DESCRIPTION OF THE INVENTION
  • Referring to FIG. 1 and FIG. 2, a blower in accordance with a preferred embodiment of the present invention includes a fan blade assembly 100, a rotor 200, a stator 300, and a scroll housing 400. The fan blade assembly 100 includes a cylinder 110, an annular upper ring 120, an annular lower outer ring 130, an annular lower inner ring 140, a plurality of spaced fan blades 150, and damping ribs 160. The cylinder 110 is fixed to and surrounding the rotor 200. The fan blades 150 are arranged along a circumferential face, which surrounds and spaces the cylinder 110. The upper ring 120 connects with upper ends of the fan blades 150. The lower outer ring 130 connects with one side of lower ends of the fan blades 150. The lower inner ring 140 interconnects an opposite side of the lower ends of the fan blades 150 with the cylinder 110. The damping ribs 160 are set between each two adjacent fan blades 150 and arranged at a circle concentric with the cylinder 110. Adjacent two damping ribs 160 are separated from each other by one of the fan blades 150.
  • The stator 300 is secured on the bottom panel 410 of the scroll housing 400. The rotor 200 is rotatably mounted to the stator 300. The rotor 200 drives the fan blade assembly 100 to rotate via the cylinder 110. The damping ribs 160 enhance structural integrity of the fan blade assembly 100 thereby acting as a vibration damper of the fan blades 150 when the blower operates at high-speed.
  • It is believed that the present invention and its advantages will be understood from the foregoing description, and it will be apparent that various changes may be made thereto without departing from the spirit and scope of the invention or sacrificing all of its material advantages, the example hereinbefore described merely being a preferred or exemplary embodiment.

Claims (13)

1. A blower comprising:
a fan blade assembly, the fan blade assembly comprising:
fan blades fixed by an upper ring, a lower outer ring, and a lower inner ring;
a cylinder surrounded by the fan blades and coupled to the lower inner ring; and
damping ribs set between each two adjacent fan blades for enhancing structural integrity of the fan blade assembly thereby acting as a vibration damper of the fan blades when the blower operates at high-speed.
2. The blower as claimed in claim 1, further comprising a scroll housing, and a stator secured on a bottom panel of the scroll housing.
3. The blower as claimed in claim 2, further comprising a rotor rotatably mounted around the stator.
4. The blower as claimed in claim 3, wherein the cylinder is fixed with the rotor.
5. A blower comprising:
a fan blade assembly, the fan blade assembly comprising:
fan blades being annularly arrayed, the fan blades fixed by an upper fixity and a lower fixity;
a cylinder surrounded by the fan blades and coupled to the lower fixity; and
damping ribs set between each two adjacent fan blades for enhancing structural integrity of the fan blade assembly thereby acting as a vibration damper of the fan blades when the blower operates at high-speed.
6. The blower as claimed in claim 5, further comprising a scroll housing, and a stator secured on a bottom panel of the scroll housing.
7. The blower as claimed in claim 6, further comprising a rotor rotatably mounted around the stator.
8. The blower as claimed in claim 7, wherein the cylinder is fixed with the rotor.
9. The blower as claimed in claim 5, wherein the upper fixity is an annular ring connecting each of the fan blades.
10. The blower as claimed in claim 5, wherein the lower fixity is a lower outer ring and a lower inner ring fixing the fan blades.
11. A blower comprising:
a housing with a stator secured therein;
a rotor rotatably mounted around the stator; and
a fan blade assembly comprising a cylinder fixed to and surrounding the rotor, a plurality of spaced fan blades arranged along a circumferential face which surrounds and spaces the cylinder, an upper ring connecting with an upper end of the fan blade, a lower outer ring connecting with one side of a lower end of the fan blade, a lower inner ring interconnecting an opposite side of the lower end of the fan blade with the cylinder, and damping ribs connected between adjacent two fan blades for enhancing structural integrity of the fan blade assembly.
12. The blower as claimed in claim 11, wherein adjacent two damping ribs are separated from each other by one of the fan blades.
13. The blower as claimed in claim 12, wherein the damping ribs are arranged at a circle concentric with the cylinder.
US11/309,579 2005-12-15 2006-08-25 Blower Abandoned US20070140836A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNA2005101207039A CN1982725A (en) 2005-12-15 2005-12-15 Blast fan
CN200510120703.9 2005-12-15

Publications (1)

Publication Number Publication Date
US20070140836A1 true US20070140836A1 (en) 2007-06-21

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ID=38165459

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/309,579 Abandoned US20070140836A1 (en) 2005-12-15 2006-08-25 Blower

Country Status (2)

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US (1) US20070140836A1 (en)
CN (1) CN1982725A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080180911A1 (en) * 2007-01-25 2008-07-31 Sony Corporation Fan motor apparatus and electronic apparatus
WO2009143920A1 (en) * 2008-05-27 2009-12-03 Ebm-Papst St. Georgen Gmbh & Co. Kg Radial fan
US9022731B2 (en) 2009-11-03 2015-05-05 Alessandro Seccareccia Centrifugal ceiling fan
US20190063453A1 (en) * 2017-08-22 2019-02-28 Asia Vital Components Co., Ltd. Heat-dissipation fan with cylindrical fan blades
CN113007130A (en) * 2021-03-22 2021-06-22 联想(北京)有限公司 Fan body and electronic equipment

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108425882A (en) * 2018-05-31 2018-08-21 陈靖 A kind of electric hair dryer fan blade

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1877347A (en) * 1927-08-19 1932-09-13 Clarage Fan Company Fan wheel
US3306528A (en) * 1965-09-22 1967-02-28 Eck Bruno Centrifugal blower
US4874293A (en) * 1988-11-08 1989-10-17 Gutzwiller H Leslie Modified centrifugal airfoil fan wheel
US6007300A (en) * 1996-05-17 1999-12-28 Calsonic Corporation Centrifugal multiblade fan
US6767184B2 (en) * 2001-08-28 2004-07-27 Lg Electronics Inc. Blower
US6893218B2 (en) * 2002-04-09 2005-05-17 Denso Corporation Centrifugal blower unit
US6942459B2 (en) * 2003-08-29 2005-09-13 Datech Technology Co., Ltd. Modified centrifugal fan wheel
US7329100B2 (en) * 2005-01-28 2008-02-12 Japan Servo Co., Ltd. Centrifugal fan impeller

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1877347A (en) * 1927-08-19 1932-09-13 Clarage Fan Company Fan wheel
US3306528A (en) * 1965-09-22 1967-02-28 Eck Bruno Centrifugal blower
US4874293A (en) * 1988-11-08 1989-10-17 Gutzwiller H Leslie Modified centrifugal airfoil fan wheel
US6007300A (en) * 1996-05-17 1999-12-28 Calsonic Corporation Centrifugal multiblade fan
US6767184B2 (en) * 2001-08-28 2004-07-27 Lg Electronics Inc. Blower
US6893218B2 (en) * 2002-04-09 2005-05-17 Denso Corporation Centrifugal blower unit
US6942459B2 (en) * 2003-08-29 2005-09-13 Datech Technology Co., Ltd. Modified centrifugal fan wheel
US7329100B2 (en) * 2005-01-28 2008-02-12 Japan Servo Co., Ltd. Centrifugal fan impeller

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080180911A1 (en) * 2007-01-25 2008-07-31 Sony Corporation Fan motor apparatus and electronic apparatus
US7885065B2 (en) * 2007-01-25 2011-02-08 Sony Corporation Fan motor apparatus and electronic apparatus
WO2009143920A1 (en) * 2008-05-27 2009-12-03 Ebm-Papst St. Georgen Gmbh & Co. Kg Radial fan
US9022731B2 (en) 2009-11-03 2015-05-05 Alessandro Seccareccia Centrifugal ceiling fan
US9829009B2 (en) 2009-11-03 2017-11-28 P.A.C. International Inc. Centrifugal ceiling fan
US20190063453A1 (en) * 2017-08-22 2019-02-28 Asia Vital Components Co., Ltd. Heat-dissipation fan with cylindrical fan blades
US10598187B2 (en) * 2017-08-22 2020-03-24 Asia Vital Components Co., Ltd. Heat-dissipation fan with cylindrical fan blades
CN113007130A (en) * 2021-03-22 2021-06-22 联想(北京)有限公司 Fan body and electronic equipment
US20220299041A1 (en) * 2021-03-22 2022-09-22 Lenovo (Beijing) Limited Fan body and electronic apparatus
US11852159B2 (en) * 2021-03-22 2023-12-26 Lenovo (Beijing) Limited Fan body and electronic apparatus

Also Published As

Publication number Publication date
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Legal Events

Date Code Title Description
AS Assignment

Owner name: HON HAI PRECISION INDUSTRY CO., LTD., TAIWAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CHAO, CHIH-HANG;LIN, YU-HSU;WU, JENG-DA;REEL/FRAME:018188/0379

Effective date: 20060811

STCB Information on status: application discontinuation

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