EP1276994B1 - Lüfter insbesondere zur belüftung von elektronischen geräten - Google Patents

Lüfter insbesondere zur belüftung von elektronischen geräten Download PDF

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Publication number
EP1276994B1
EP1276994B1 EP01938021A EP01938021A EP1276994B1 EP 1276994 B1 EP1276994 B1 EP 1276994B1 EP 01938021 A EP01938021 A EP 01938021A EP 01938021 A EP01938021 A EP 01938021A EP 1276994 B1 EP1276994 B1 EP 1276994B1
Authority
EP
European Patent Office
Prior art keywords
hub
blade
blower according
guide surface
blower
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.)
Expired - Lifetime
Application number
EP01938021A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1276994A1 (de
Inventor
Thomas MÄRLÄNDER
Christof Huonker
Andreas Kienzler
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.)
Verax Ventilatoren GmbH
Original Assignee
Verax Ventilatoren GmbH
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 Verax Ventilatoren GmbH filed Critical Verax Ventilatoren GmbH
Publication of EP1276994A1 publication Critical patent/EP1276994A1/de
Application granted granted Critical
Publication of EP1276994B1 publication Critical patent/EP1276994B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/06—Helico-centrifugal pumps
    • 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
    • F04D29/26—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
    • F04D29/30—Vanes

Definitions

  • the invention relates to a fan in particular for ventilation or cooling of electronic devices such as personal computers.
  • radial fans are known, for example, for use in hair dryers, the build up of larger pressure differences a higher flow resistance can overcome. Such fans are however apart from their small delivery volume because of the radial or tangential Air duct for installation in PC case rather unsuitable.
  • Next known are mixed forms in particular as so-called Halbaxial-Lrangeer, the one diagonal flow component in regions overlapping, have inclined blades. Even such fans include Computer Applications Noise Disadvantages.
  • a fan having the features of the preamble of claim 1 is e.g. out DE 41 27 134 known.
  • the invention has the object, a fan indicate that avoids the aforementioned disadvantages and at low Noise is a high efficiency with regard to efficient Ventilation and cooling achieved.
  • the design for installation well suited in computer case and on the typical system characteristics be coordinated.
  • the guide surface should axially steeper than the hub in the blade area. It is further advantageous if the guide surface in the blade area substantially the Shape of a truncated cone with a cone angle between 20 ° and 60 °, preferably 40 °, and when the hub in the blade area substantially the shape of a truncated cone with a cone angle between 80 ° and 110 °, preferably 95 °.
  • the hub is parabolic at least in its apex region. It is also favorable if the entry section of the guide surface over an inlet radius rounded to the outside.
  • a further improvement is achieved in that the free blade end edges while leaving a tolerance gap along the guide surface.
  • Another aerodynamically favorable embodiment provides that the blade leading edge a rounding radius of 1% to 4% and a profile thickness from 2% to 8% of the length of the free blade end edge.
  • the fan shown in the drawing consists essentially of a Housing 10, a rotatably mounted therein about a rotation axis 12, a Hub 14 and molded thereon blades 16 having impeller 18th and a rotary drive 20 for the impeller 18th
  • the housing 10 comprises an inner jacket as a guide surface 22 a Flow channel 24 on the outside, while concentric to the Guide surface 16 arranged hub 14 the flow channel 24 inside limited.
  • the guide surface 22 has the exception of its entry part 26 the shape of a in the flow direction - in Fig. 2 down - widening truncated cone, wherein the cone angle is about 40 °.
  • the inlet section 26 is under limitation of the inlet opening 28 of the Flow channel 24 is rounded over an inlet radius to the outside. This radius should be kept as large as possible to prevent the formation of to avoid turbulence on the inlet side.
  • the guide surface is slightly curved as a truncated paraboloid of revolution is.
  • the hub 14 is frusto-conical in the foot region 30 of the blades 16, wherein the cone angle in the illustrated embodiment is 95 °.
  • the Hub 14 parabolic shaped to avoid turbulence.
  • the hub 14 has the overall shape of a paraboloid, optionally with rounded trailing edge.
  • the guide surface 22 in the blade area ie between the Blade entry edge 34 and the blade outlet edge 36 a larger Slope in the direction of the axis of rotation 12 than the hub 14, so that the Central diameter of the annular flow channel 24 at a constant or slightly decreasing light flow area is steadily extended.
  • the blades 16 are to avoid resonances around the circumference the hub 14 asymmetrically distributed and are as pure radial blades in parallel to the axis of rotation 12 extending, counter to the direction of rotation (Counterclockwise in Fig. 1) backward curved cylindrical surfaces.
  • the blade entry edges 34 extend axially over the apex area 32 of the hub 14 out to the inlet opening 28 and have a radius of curvature from 1% to 4% and a profile thickness of 2% to 8% of the length the free blade end edges 42, which under keeping a tolerance gap along the guide surface 22 extend.
  • the entire fan 18 is preferably as a one-piece injection molding made of plastic. It is favorable in terms of demolding, that the blades 16 do not overlap in the direction of rotation.
  • the rotary drive 20 is formed by an electric motor designed as an external rotor formed, which in a cylindrical recess 44 of the hub 14th is arranged.
  • the rotor 46 is firmly connected to the hub 14 while via roller bearing 48 on the rotor shaft 50 seated stator 52 means Ring flange 54 and radially projecting frame webs 56 exit side fixed to the housing.
EP01938021A 2000-04-28 2001-03-15 Lüfter insbesondere zur belüftung von elektronischen geräten Expired - Lifetime EP1276994B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10020878A DE10020878C2 (de) 2000-04-28 2000-04-28 Lüfter insbesondere zur Belüftung von elektronischen Geräten
DE10020878 2000-04-28
PCT/EP2001/002943 WO2001083994A1 (de) 2000-04-28 2001-03-15 Lüfter insbesondere zur belüftung von elektronischen geräten

Publications (2)

Publication Number Publication Date
EP1276994A1 EP1276994A1 (de) 2003-01-22
EP1276994B1 true EP1276994B1 (de) 2005-10-19

Family

ID=7640230

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01938021A Expired - Lifetime EP1276994B1 (de) 2000-04-28 2001-03-15 Lüfter insbesondere zur belüftung von elektronischen geräten

Country Status (7)

Country Link
US (1) US6814542B2 (zh)
EP (1) EP1276994B1 (zh)
JP (1) JP2003532026A (zh)
CN (1) CN1180184C (zh)
AT (1) ATE307294T1 (zh)
DE (2) DE10020878C2 (zh)
WO (1) WO2001083994A1 (zh)

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JP2004169680A (ja) * 2002-11-18 2004-06-17 Taida Electronic Ind Co Ltd 羽根構造およびそれを用いた放熱装置
TW566073B (en) * 2003-04-11 2003-12-11 Delta Electronics Inc Heat-dissipating device and a housing thereof
TWI281846B (en) * 2003-05-30 2007-05-21 Delta Electronics Inc Heat-dissipating device and a housing thereof
DE10357289A1 (de) * 2003-12-05 2005-07-07 Minebea Co., Ltd. Kompakter Diagonallüfter
EP1721080A1 (de) * 2004-03-01 2006-11-15 Brünig, Matthias Propellergebläse, muschelpropeller
DE102004010457B3 (de) * 2004-03-01 2005-07-14 "Aura" Herbert D. Stolle Gmbh & Co Propellergebläse, Muschelpropeller
DE102004028942B4 (de) * 2004-06-15 2008-04-24 Hellmut Ruck Gmbh Gebläse für ein elektrisches Gerät sowie zugehöriges Baukastensystem
DE102004034472A1 (de) † 2004-07-15 2006-02-09 Spiess, Heike Gedämpfter Lüfter
TWI305612B (en) * 2004-08-27 2009-01-21 Delta Electronics Inc Heat-dissipating fan
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DE202005015357U1 (de) 2004-10-09 2006-01-05 Ebm-Papst St. Georgen Gmbh & Co. Kg Lüfter mit einem Lüfterrad
US20060093479A1 (en) * 2004-11-01 2006-05-04 Sunonwealth Electric Machine Industry Co., Ltd. Pressure-boosting axial-flow heat-dissipating fan
ATE403088T1 (de) * 2005-04-07 2008-08-15 Harman Becker Automotive Sys Ventilateur
US20070248461A1 (en) * 2006-04-25 2007-10-25 Shn-Yung Lee Fan generating medium wind pressure and air supply
US20080112127A1 (en) * 2006-11-09 2008-05-15 Michael Sean June Cooling system with angled blower housing and centrifugal, frusto-conical impeller
US8485781B2 (en) * 2007-10-31 2013-07-16 Nidec Corporation Axial flow fan
US8287243B2 (en) * 2008-01-24 2012-10-16 General Electric Company Spinner of a wind turbine
CN102022357A (zh) * 2009-09-22 2011-04-20 富准精密工业(深圳)有限公司 散热风扇
US8649171B2 (en) * 2010-02-26 2014-02-11 Hewlett-Packard Development Company, L.P. Mixed-flow ducted fan
JP5739200B2 (ja) * 2010-04-20 2015-06-24 山洋電気株式会社 送風機
TW201230939A (en) * 2010-11-08 2012-07-16 Compal Electronics Inc Electronic apparatus
CN102828995A (zh) * 2011-06-15 2012-12-19 富准精密工业(深圳)有限公司 散热风扇
US20130088835A1 (en) * 2011-10-11 2013-04-11 Alcatel-Lucent. Active air-cooling device for electronic circuits
CN202612138U (zh) * 2011-12-28 2012-12-19 日本电产株式会社 轴流风扇
JP5945912B2 (ja) * 2012-02-09 2016-07-05 日本電産株式会社 ファン
DE202012103921U1 (de) 2012-10-12 2014-01-16 Ebm-Papst St. Georgen Gmbh & Co. Kg Montageelement zur Befestigung eines Lüftergehäuses und Lüftergehäuse
FR3002271A1 (fr) * 2013-02-21 2014-08-22 Thy Engineering Roue de turbine, de compresseur ou de pompe.
US9505092B2 (en) 2013-02-25 2016-11-29 Greenheck Fan Corporation Methods for fan assemblies and fan wheel assemblies
CN105392997B (zh) 2013-02-25 2018-07-10 格林瀚克通风设备有限公司 混流风机组件
US10125783B2 (en) * 2013-02-25 2018-11-13 Greenheck Fan Corporation Fan assembly and fan wheel assemblies
US10184488B2 (en) 2013-02-25 2019-01-22 Greenheck Fan Corporation Fan housing having flush mounted stator blades
JP5839755B1 (ja) * 2015-01-08 2016-01-06 山洋電気株式会社 ファンケーシング及びファン装置
CN107575408A (zh) * 2015-03-02 2018-01-12 联想(北京)有限公司 风扇和具有风扇的电子产品
CN205908525U (zh) * 2016-07-29 2017-01-25 台达电子工业股份有限公司 散热模块
CN114738315A (zh) * 2018-11-28 2022-07-12 台达电子工业股份有限公司 风扇叶轮
CN110017294A (zh) * 2019-05-15 2019-07-16 浙江三新科技有限公司 一种高效静音的负压式轴流风机
CN111734684B (zh) * 2020-07-07 2021-10-29 江西乐富军工装备有限公司 一种电气或电子装置的散热模组
CN114483649B (zh) * 2021-12-29 2024-02-27 德安县塑丽龙纺织有限公司 一种用于纺织产品生产的干燥装置

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Also Published As

Publication number Publication date
US6814542B2 (en) 2004-11-09
EP1276994A1 (de) 2003-01-22
CN1180184C (zh) 2004-12-15
ATE307294T1 (de) 2005-11-15
DE10020878C2 (de) 2002-05-02
DE50107752D1 (de) 2006-03-02
CN1426511A (zh) 2003-06-25
DE10020878A1 (de) 2001-11-15
US20030077175A1 (en) 2003-04-24
JP2003532026A (ja) 2003-10-28
WO2001083994A1 (de) 2001-11-08

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