EP1617085B2 - Gedämpfter Lüfter - Google Patents

Gedämpfter Lüfter Download PDF

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Publication number
EP1617085B2
EP1617085B2 EP05014242.1A EP05014242A EP1617085B2 EP 1617085 B2 EP1617085 B2 EP 1617085B2 EP 05014242 A EP05014242 A EP 05014242A EP 1617085 B2 EP1617085 B2 EP 1617085B2
Authority
EP
European Patent Office
Prior art keywords
fan
housing
elastic damping
damping elements
fastening
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.)
Active
Application number
EP05014242.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1617085A1 (de
EP1617085B1 (de
Inventor
Dirk Heuvel
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.)
Blacknoise Deutschland GmbH
Original Assignee
Blacknoise Deutschland 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34937736&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1617085(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Blacknoise Deutschland GmbH filed Critical Blacknoise Deutschland GmbH
Publication of EP1617085A1 publication Critical patent/EP1617085A1/de
Application granted granted Critical
Publication of EP1617085B1 publication Critical patent/EP1617085B1/de
Publication of EP1617085B2 publication Critical patent/EP1617085B2/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04D29/66—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
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/541—Specially adapted for elastic fluid pumps
    • F04D29/542—Bladed diffusers

Definitions

  • the present invention relates to an axial fan according to the preamble of claim 1.
  • Such axial fans are used for air cooling of heat generating components. Above all, they are used as computer fans for air cooling of electrical and / or electronic components in personal computers or computers. They include a fan housing with an axiallyteurströmbaren Lucasleitrahmen in which a fan is rotatably mounted, wherein the fan housing in the axial direction has an at least substantially rectangular cross-section and in its four corners with fastening means for direct attachment to a component to be cooled or for indirect attachment is provided on a housing containing the component to be cooled.
  • the fastening means are formed by mounting holes which are arranged at a standard distance such that the fan can be fixed by means of screws in the computer housing also provided in the standard distance holes.
  • the fastening means can also be designed for other types of fastening, for example for snap connections
  • Such axial fans which are also referred to as case fans, are well known. They are used in particular in computers for cooling or for dissipating the heat that is emitted by heat-generating components, for example, processors, in particular via heat sinks.
  • a cooling air flow is generated by rotation of the provided with suitably shaped blades or fan blades fan, which is directed in at least substantially axial direction on the heat-releasing and to be cooled component.
  • the fan can also be arranged so that it sucks the ambient air surrounding the heat-dissipating member, so as to dissipate the heat.
  • Such fans may also be connected to other chips, in particular to graphics cards, to hard disk drives and / or to Power supplies are used.
  • such fans can be used in other devices with heat-generating components, such as projectors.
  • Fans of the type mentioned thus basically consist of two main main assemblies, namely the fan housing and the rotatable fan wheel unit connected thereto. While the fan housing with its outer areas or with its Luftleitrahmen the installation of the ready-to-use fan, the fan wheel unit ensures with their fan blades by their rotation for the desired movement of the air.
  • the rotational movement of the fan wheel unit is usually brought about by an electric motor arranged coaxially with the fan wheel in or on the fan housing.
  • the mechanically transmitted to the fan housing during operation oscillations or vibrations increase the overall volume of the fan depending on the speed considerably, since the fan housing of the fan forms a resonator.
  • the fan is mounted in a computer housing, usually made of sheet steel, which is usually done by a fixed snap or screw connection, the vibrations are transmitted to the then resonating computer case, which again increases the volume.
  • the vibration transmission to the computer case is carried out by the direct contact of the vibrating plastic parts of the fan housing with the computer case. Since a computer housing is a very good sound box, the high-frequency vibrations (structure-borne noise) caused by the fan are clearly audibly amplified by the PC housing.
  • the fan is not fastened with metal screws, but attached as a separate mounting means additionally and specially shaped rubber elements, which should prevent the transmission of the fan vibrations to the computer case.
  • the fan housing is vibration damping attached to a component or the computer case, whereby a certain noise attenuation can be achieved. It is also known to mount the fan housing freely swinging by means of one or more outwardly tensioned rubber cords.
  • Another disadvantage is the additional installation space required for the elastomer components located outside of the fan housing, which represents a considerable problem, especially in the cramped space conditions in a computer housing.
  • the GB 2 107 787 A discloses an axial fan with a fan housing surrounded by an external isolation device.
  • This isolation device comprises an outer frame and an inner frame, which are interconnected by an elastic membrane.
  • the inner frame is either attached by screws to the fan housing or designed in one piece with it, wherein the membrane acting as an elastic damping element is not integrated in each case in the fan housing, but this outside surrounds. This in turn requires additional space and is associated with the disadvantages mentioned.
  • Object of the present invention is therefore to provide an inexpensive to manufacture and easily assembled without additional components fan of the type mentioned above, which has a significantly improved noise reduction in a structurally simple manner and is very quiet in operation, without requiring additional space.
  • a significant advantage lies in the fact that due to the effective between the fan and the attachment means for fixing the axial damping damping element, the fan or the Lüfterradö decoupled as a vibration-generating component mechanically completely from a serving for mounting the fan component, in particular from a computer housing receiving the fan is. Therefore, vibrations or vibrations that arise can no longer or at most be transmitted to a significantly reduced extent to an outer component or to a computer housing. Outer components or computer cases are therefore no longer amplifying the resonant body, whereby the volume of the fan during operation is considerably reduced. In particular, in perceived as annoying frequency range as a significant noise attenuation can be achieved.
  • Another significant advantage is that due to the complete integration of the at least one damping element or the complete integration of all damping elements in the fan neither additional space nor separately to be mounted elastomeric elements are needed. All damping elements are located in the fan housing, so that the axial fan according to the invention can be mounted or attached in exactly the same way and used by the user, as the conventional fan without integrated damping elements.
  • an axial fan is created, which not only runs very quietly, but is also inexpensive to produce and quick and easy to install.
  • all the damping elements are integrated into the fan, so that no separate damping components are needed more, via which the fan must be mounted in the computer.
  • the fan according to the invention can therefore be easily mounted in a conventional manner by snap connections or by screw in a computer case, the conventional and standardized mounting Befest Trentsbohrüngen can be used. Since all damping means are arranged in the fan housing, on the one hand no additional space is required and on the other hand, an unwanted amplification of the vibrations or an increase in the volume of the fan can be effectively avoided.
  • each fastening means which is used for fastening the fan to a component to be cooled or to a computer housing is accommodated in a damping element, wherein the damping elements are in turn disposed within the axial fan.
  • damping elements can project beyond the Luftleitrahmen axially on both end faces of the fan with both end faces axially applied to a component or a computer case and attached thereto.
  • the vibration decoupling can be done regardless of the orientation of the fan during its assembly.
  • the shipsleitrahmen viewed in the axial direction, at least approximately have an octagonal cross section, wherein the elastic damping elements each have an at least approximately triangular cross-section.
  • the sides facing the damping elements may be rounded or the Lucasleitrahmen may have a total of a round cross-section, wherein the damping elements each have an at least approximately triangular cross-section with a concavely curved base side.
  • the fastening means are preferably formed by bores.
  • self-tapping screws can be used to attach the fan.
  • the mounting holes each comprise a recorded or cast in the respective elastic damping element, preferably made of metal or plastic, threaded sleeve having an internal thread. In this case, then the internal thread corresponding, in particular metric screws can be used for secure attachment of the fan.
  • bearing means fans and / or roller bearings, in particular ball bearings, are preferably used in fans.
  • the bearing means can advantageously also be integrated in the electric motor, so that the bearing means need not be mounted separately but are practically formed by the electric motor. It is also particularly advantageous if the electric motor is designed as a brushless external rotor motor.
  • the rotor or the rotating magnets of the electric motor can also be arranged in the radially outer region of the fan wheel, so that the stator or the coils of the electric motor are located radially outside the fan wheel.
  • the elastically resilient damping elements made of rubber or rubber material or of an elastically resilient plastic, in particular made of polyurethane.
  • the present invention furthermore relates to a computer, in particular a PC, which contains a fan according to the invention of the type described above.
  • FIG. 1 schematically shown axial fan 1 of conventional design has a manufactured from plastic cuboid fan housing 2, which in each case has a mounting hole as a fastening means 3 for attachment in a computer case, not shown here in the corners of its outer housing portion. From the outer housing portion extending four straight connecting arms 4 inwardly, at its inner End in a circular trained central storage area 5 of the fan housing 1 open.
  • the connecting arms 4 extend in the embodiment shown here tangential to the bearing area 5. However, they can also extend in other directions, for example radially. Likewise, the connecting arms 4 can also be bent and / or provided in a different number.
  • a fan 6 is rotatably mounted.
  • a not-shown electric motor is provided in the fan housing 2, which is arranged completely or partially in or on the hub 7 and the storage area 5.
  • the fan 6 is thus connected via the bearing means and the storage area 5 and the connecting arms 4 to the fan housing 2. By its rotation, the fan 6 generates the air movement required for cooling, the outer region of the fan housing 2 serves as Heilleitrahmen for the air flow. In this respect, fans 1 are generally known.
  • damping elements 9 are arranged in the four corners of the fan housing 2.
  • the damping elements 9 are then vulcanized onto the outer sides of the Heilleitrahmens 10.
  • the Heilleitrahmen 10 of the fan housing 2 has viewed in the axial direction on the inside a surrounding the fan 6 round cross section and the outside a substantially octagonal cross-section, the four the Damping elements 9 facing sides 11 are made shorter than the four outer sides of the fan housing 2 forming sides 12th
  • the damping elements 9 in the axial direction have a greater length than the Lucasleitrahmen 10 or as the fan housing 2.
  • the damping elements 9 have a length of 25 mm, which corresponds to a standard width of axial fans for PCs, while the Heilleitrahmen 10 only one Width of 23 mm, so that the damping elements 9 project beyond the Lucasleitrahmen 10 at both ends axially by one millimeter.
  • the fastening means 3 are also formed here by fastening bores, which are each arranged within an elastic damping element 9.
  • each made of metal threaded sleeve 13 is cast with an internal thread in the respective elastic damping element 9 at each mounting hole 3, so that the attachment of the fan 1 in a computer case by means of metric Screws can be carried out very easily and safely.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Table Equipment (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
EP05014242.1A 2004-07-15 2005-06-30 Gedämpfter Lüfter Active EP1617085B2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004034472A DE102004034472A1 (de) 2004-07-15 2004-07-15 Gedämpfter Lüfter

Publications (3)

Publication Number Publication Date
EP1617085A1 EP1617085A1 (de) 2006-01-18
EP1617085B1 EP1617085B1 (de) 2007-04-11
EP1617085B2 true EP1617085B2 (de) 2017-01-11

Family

ID=34937736

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05014242.1A Active EP1617085B2 (de) 2004-07-15 2005-06-30 Gedämpfter Lüfter

Country Status (4)

Country Link
EP (1) EP1617085B2 (es)
AT (1) ATE359446T1 (es)
DE (2) DE102004034472A1 (es)
ES (1) ES2285608T3 (es)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007018680A1 (de) * 2007-04-20 2008-10-23 Daimler Ag Gebläse zur Lagerung an einem Fahrzeugsitz
DE102008032439A1 (de) * 2008-07-10 2010-01-14 Spiess, Heike Lüfter zur Luftkühlung wärmeerzeugender Bauteile
CN102102678B (zh) * 2009-12-21 2014-09-17 北京市九州风神科技有限公司 一种散热风扇
DE102011103571A1 (de) 2011-05-30 2012-12-06 Listan-Gmbh & Co. Kg Axiallüfter zur Verwendung in Computern und anderen elektronischen Geräten
DE102012111640B4 (de) 2012-11-30 2022-12-01 HELLA GmbH & Co. KGaA Vorrichtung zur Befestigung eines Lüfters
CN103470537B (zh) * 2013-10-09 2016-08-17 广新海事重工股份有限公司 一种风机减震降噪装置
CN104791271A (zh) * 2015-03-02 2015-07-22 周玉红 一种油封修边机低噪冷却扇
CN106151106B (zh) * 2015-04-10 2019-05-07 讯凯国际股份有限公司 主动式元件的壳体及其制造方法
TWI663815B (zh) * 2018-01-12 2019-06-21 元山科技工業股份有限公司 減震風扇
TWI785947B (zh) * 2021-12-27 2022-12-01 元山科技工業股份有限公司 可減震的風扇殼座
DE102022110439A1 (de) 2022-04-28 2023-11-02 Alphacool International Gmbh Lüfter zur Erzeugung eines kühlenden Luftstroms
DE202023105352U1 (de) 2023-09-14 2023-10-12 Alphacool International Gmbh Lüfter zur Erzeugung eines kühlenden Luftstroms

Citations (18)

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US3926537A (en) † 1973-05-14 1975-12-16 James Piper Air blower
DE4137465A1 (de) † 1991-11-14 1993-05-27 Licentia Gmbh Einseitige befestigung eines stators eines buerstenlosen gleichstrommotors an einem gehaeuseteil
DE3347360C2 (de) † 1983-12-28 1995-04-13 Papst Motoren Gmbh & Co Kg Kollektorloser Außenläufer-Gleichstrommotor
EP0926803A2 (de) † 1997-12-24 1999-06-30 ebm Werke GmbH & Co. Anordnung zur schwingungsisolierenden Halterung eines Elektromotors
EP0871278B1 (de) † 1997-04-08 2001-10-10 ebm Werke GmbH & Co. KG Anordnung zur schwingungsisolierenden Aufhängung eines Elektromotors
CN2461058Y (zh) † 2000-12-25 2001-11-21 神达电脑股份有限公司 Cpu散热器固定结构
WO2001098666A1 (en) † 2000-06-20 2001-12-27 General Electric Company Methods and apparatus for reducing vibrations induced within fan assemblies
CN2480899Y (zh) † 2001-02-27 2002-03-06 大众电脑股份有限公司 改进结构的冷却装置
DE10020878C2 (de) † 2000-04-28 2002-05-02 Verax Ventilatoren Gmbh Lüfter insbesondere zur Belüftung von elektronischen Geräten
DE10128535A1 (de) † 2000-06-19 2002-07-11 Bosch Gmbh Robert Vorrichtung zur schwingungsisolierenden Halterung eines Elektromotors
EP1056185B1 (de) † 1999-05-26 2003-10-22 ebm Werke GmbH & Co. KG Anordnung zur schwingungsisolierenden Halterung eines Elektromotors
CN1456037A (zh) † 2001-03-03 2003-11-12 扎尔曼技术株式会社 散热器及使用该散热器的散热装置
EP1404008A2 (de) † 2002-09-30 2004-03-31 ebm-papst Mulfingen GmbH & Co.KG Elektromotor mit schraubenloser Steckmontage
CN2625959Y (zh) † 2003-05-14 2004-07-14 元山科技工业股份有限公司 散热风扇与基板的吸震结合装置
CN2627262Y (zh) † 2003-05-14 2004-07-21 元山科技工业股份有限公司 散热风扇与基板的吸震结合装置
CN2668903Y (zh) † 2003-09-11 2005-01-05 陈正钢 具防震衬套的散热风扇
TWI254452B (en) † 2004-01-21 2006-05-01 Sanyo Electric Co Insulation gate type semiconductor device and its manufacture method
TWI273272B (en) † 2005-09-21 2007-02-11 Inventec Appliances Corp Position system and method thereof

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DE3809627A1 (de) * 1988-03-22 1989-10-05 Semperit Ag Holding Montagemodul fuer geblaese
DE3926537C2 (de) * 1989-08-11 1994-02-10 Fulgurit Baustoffe Gmbh Befestigungselement
US6351380B1 (en) * 1999-11-12 2002-02-26 Dell Products, L.P. Cooling fan mounting arrangement
DE20120225U1 (de) * 2001-12-13 2002-02-28 Verax Ventilatoren Gmbh Lüfter
BR0201397B1 (pt) * 2002-04-19 2011-10-18 arranjo de montagem para um ventilador de refrigerador.
CN2625958Y (zh) 2003-05-14 2004-07-14 元山科技工业股份有限公司 散热风扇与基板的吸震结合装置

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3926537A (en) † 1973-05-14 1975-12-16 James Piper Air blower
DE3347360C2 (de) † 1983-12-28 1995-04-13 Papst Motoren Gmbh & Co Kg Kollektorloser Außenläufer-Gleichstrommotor
DE4137465A1 (de) † 1991-11-14 1993-05-27 Licentia Gmbh Einseitige befestigung eines stators eines buerstenlosen gleichstrommotors an einem gehaeuseteil
EP0871278B1 (de) † 1997-04-08 2001-10-10 ebm Werke GmbH & Co. KG Anordnung zur schwingungsisolierenden Aufhängung eines Elektromotors
EP0926803A2 (de) † 1997-12-24 1999-06-30 ebm Werke GmbH & Co. Anordnung zur schwingungsisolierenden Halterung eines Elektromotors
EP1056185B1 (de) † 1999-05-26 2003-10-22 ebm Werke GmbH & Co. KG Anordnung zur schwingungsisolierenden Halterung eines Elektromotors
DE10020878C2 (de) † 2000-04-28 2002-05-02 Verax Ventilatoren Gmbh Lüfter insbesondere zur Belüftung von elektronischen Geräten
DE10128535A1 (de) † 2000-06-19 2002-07-11 Bosch Gmbh Robert Vorrichtung zur schwingungsisolierenden Halterung eines Elektromotors
WO2001098666A1 (en) † 2000-06-20 2001-12-27 General Electric Company Methods and apparatus for reducing vibrations induced within fan assemblies
CN2461058Y (zh) † 2000-12-25 2001-11-21 神达电脑股份有限公司 Cpu散热器固定结构
CN2480899Y (zh) † 2001-02-27 2002-03-06 大众电脑股份有限公司 改进结构的冷却装置
CN1456037A (zh) † 2001-03-03 2003-11-12 扎尔曼技术株式会社 散热器及使用该散热器的散热装置
EP1404008A2 (de) † 2002-09-30 2004-03-31 ebm-papst Mulfingen GmbH & Co.KG Elektromotor mit schraubenloser Steckmontage
CN2625959Y (zh) † 2003-05-14 2004-07-14 元山科技工业股份有限公司 散热风扇与基板的吸震结合装置
CN2627262Y (zh) † 2003-05-14 2004-07-21 元山科技工业股份有限公司 散热风扇与基板的吸震结合装置
CN2668903Y (zh) † 2003-09-11 2005-01-05 陈正钢 具防震衬套的散热风扇
TWI254452B (en) † 2004-01-21 2006-05-01 Sanyo Electric Co Insulation gate type semiconductor device and its manufacture method
TWI273272B (en) † 2005-09-21 2007-02-11 Inventec Appliances Corp Position system and method thereof

Also Published As

Publication number Publication date
DE502005000572D1 (de) 2007-05-24
ATE359446T1 (de) 2007-05-15
EP1617085A1 (de) 2006-01-18
DE102004034472A1 (de) 2006-02-09
EP1617085B1 (de) 2007-04-11
ES2285608T3 (es) 2007-11-16

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