EP0596043B1 - An arrangement for supporting a fan housing by means of an elastic ring - Google Patents

An arrangement for supporting a fan housing by means of an elastic ring Download PDF

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Publication number
EP0596043B1
EP0596043B1 EP92918460A EP92918460A EP0596043B1 EP 0596043 B1 EP0596043 B1 EP 0596043B1 EP 92918460 A EP92918460 A EP 92918460A EP 92918460 A EP92918460 A EP 92918460A EP 0596043 B1 EP0596043 B1 EP 0596043B1
Authority
EP
European Patent Office
Prior art keywords
housing
ring
hook
forming devices
opening
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
EP92918460A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0596043A1 (en
Inventor
Karl-Gustav Andersson
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.)
ICL System AB
Original Assignee
ICL System AB
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 ICL System AB filed Critical ICL System AB
Publication of EP0596043A1 publication Critical patent/EP0596043A1/en
Application granted granted Critical
Publication of EP0596043B1 publication Critical patent/EP0596043B1/en
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
    • F04D29/66—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

Definitions

  • the present invention relates to an arrangement for supporting a fan housing which houses a fan impeller or fan wheel, wherein the exhaust end of the housing opens adjacent an opening in a wall of the space or room to be air-cooled.
  • the invention primarily relates to fan housings having a size which is normal with computer cooling fans and whose weight, including the electric motor incorporated in the fan, is about 70 grams for instance. Externally, the fan housing has a four-sided configuration, measuring 60 x 60 mm. The fan housings, however, may be larger in the case of larger computers with larger cooling requirements.
  • a housing of this kind is normally secured to a wall in the vicinity of a fan-housing opening with the aid of four screws which are screwed into screw-threaded holes provided in the wall.
  • the four screws represent a certain material expenditure and a certain amount of time is also consumed in threading the screw holes and also in tightening the screws in said holes.
  • the most serious drawback with this known arrangement is that vibrations from the fan impeller and the electric motor propagate to the wall, via the screws, and therewith create disturbing vibration noise.
  • a fan housing including a fan impeller, supported in the vicinity of an opening in a wall leading to a space which is to be air-cooled, with the exhaust end of the housing opening in the vicinity of the wall opening, particularly a computer fan housing, characterised in that an elastic ring is disposed around the end part of the housing at said exhaust end and in that at least two hook-forming devices are disposed at the wall opening and evenly distributed therearound; wherein the ring is stretched at at least two evenly distributed points around the housing periphery and hooked onto the corresponding hook-forming devices, and wherein those parts of the ring which extend between the hook-forming devices lie against parts of the housing periphery and support the housing in a free position relative to the wall, the hook-forming devices and the defining edge of the opening.
  • the housing When the fan housing is fitted in position, the housing is completely free from contact with the wall, the hooks and the opening defining edges.
  • the elastic ring is stretched and hooked onto the hooks at the edges of the opening and those parts of the ring located between the hooks abut the outer surface of the housing or supports connected therewith with sufficient force and friction to hold the housing in a desired position solely with the aid of the elastic ring, which therewith also functions as an effective vibration damping device which is effective in reducing the vibration sound.
  • the inventive arrangement is also cost-saving.
  • Figure 1 is a perspective view of a known fan housing positioned above an opening provided in the housing wall, prior to fitting the housing.
  • Figure 2 is a sectional view taken on a broken plane along the line 2-2 in Figure 1.
  • Figure 3 is a perspective view of a second embodiment of the housing with the housing shown in position above the wall opening.
  • Figure 4 is a sectional view taken on the line 4-4 in Figure 3.
  • FIG. 1 illustrates a known fan 10 having a cylindrical fan housing with two end flanges 12, 14 which form lugs at the corners, which are connected through cylinders 16 for fastener screws (not shown).
  • the impeller 18 of the blower or fan 10 is driven by a motor incorporated in the fan assembly.
  • the flanges impart a square shape to the fan components.
  • the corner parts 12A, 14A of the flanges 12, 14 form lugs or shoulders which extend radially in relation to the cylinders 16.
  • a wall 20, for instance a computer housing wall, is provided with a square opening which is sufficiently large to accommodate the fan housing with a given clearance.
  • a tongue or like element in the form of a hook 24 or some other like element is provided at each side edge of the opening.
  • the housing together with the flanges, fits in the opening and between the hooks 24 with a predetermined clearance 26.
  • FIG. 1 Shown in Figure 1 is a first elastic ring 28 which has a cylindrical cross-section, similar to the case of an O-ring, although it may also have a rectangular cross-section.
  • the ring 28 is shown stretched around the housing. In the illustrated embodiment, the ring bears against the cylinders 29 on the known housing.
  • FIG. 1 Also shown in Figure 1 is a second elastic ring 30 which is stretched and hooked around the hooks 24.
  • the rings can be fitted quickly and easily.
  • the second ring 30 is first hooked around the hooks 24, wherein those parts 32 of the ring that extend between the hooks will form an elastic support for the exhaust end of the housing when the housing is inserted down between the hooks.
  • the first ring 28 is then stretched out at four points and hooked on the hooks 24 so as to lie on the second ring 30 at the hooks, as shown in Figure 2, where the first ring is moved into abutment with the lugs or shoulders 14A so as to hold the housing pressed against the aforesaid parts 30 of the second ring.
  • the housing is therewith supported securely by the two rings 28, 30 in a position which is coaxial with the opening 22 and in a manner which will prevent axial movement of the housing in relation to the rings. Because the rings are chosen to produce a sufficiently strong holding force, the housing will remain in the position desired, even should the housing be subjected to axially directed forces, for instance as a result of bangs and knocks.
  • a highly simplified embodiment may consist of a cylindrical housing which is secured elastically between the two parts of an elastic ring stretched onto two diametrically opposed hooks. Although this embodiment functions satisfactorily, it is not normally sufficiently secure against shifting of the housing when, for instance, the housing is subjected to axial impact.
  • One important advantage afforded by the invention is that it can be applied immediately to generally existing fan housings without requiring changes to be made. The only modification required is the provision of the hooks adjacent the wall opening. Relatively inexpensive O-rings are conveniently used as the aforesaid elastic rings.
  • a fan can be provided at the exhaust end of the fan, or a pair of flanges to form a groove for coaction with the elastic rings.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Exhaust Silencers (AREA)
EP92918460A 1991-08-16 1992-08-14 An arrangement for supporting a fan housing by means of an elastic ring Expired - Lifetime EP0596043B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9102382 1991-08-16
SE9102382A SE469041B (sv) 1991-08-16 1991-08-16 Anordning foer uppbaerande av ett flaekthus med hjaelp av en elastisk ring
PCT/SE1992/000548 WO1993004289A1 (en) 1991-08-16 1992-08-14 An arrangement in supporting a fan housing by means of an elastic ring

Publications (2)

Publication Number Publication Date
EP0596043A1 EP0596043A1 (en) 1994-05-11
EP0596043B1 true EP0596043B1 (en) 1996-02-28

Family

ID=20383491

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92918460A Expired - Lifetime EP0596043B1 (en) 1991-08-16 1992-08-14 An arrangement for supporting a fan housing by means of an elastic ring

Country Status (5)

Country Link
EP (1) EP0596043B1 (fi)
DE (1) DE69208664T2 (fi)
FI (1) FI102001B1 (fi)
SE (1) SE469041B (fi)
WO (1) WO1993004289A1 (fi)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104295515A (zh) * 2013-07-15 2015-01-21 奇鋐科技股份有限公司 串联风扇结合结构

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19643760C1 (de) * 1996-10-23 1997-12-11 Daimler Benz Ag Haltevorrichtung mit einem elastischen Haltemittel für die Aufhängung eines elektromotorisch angetriebenen Gebläses
US5906475A (en) * 1997-11-12 1999-05-25 Alcatel Usa Sourcing, L.P. Housing for a fan
US6077037A (en) * 1999-03-12 2000-06-20 Lockheed Martin Corporation Quick-change fan mechanism
US7289321B2 (en) * 2004-11-16 2007-10-30 Hewlett-Packard Development Company, L.P. Ventilated casing for an electronic device
TWM293476U (en) * 2005-12-29 2006-07-01 Inventec Corp Structure of a heat-dissipating device of a computer mainframe
US7545641B2 (en) * 2007-04-23 2009-06-09 Super Micro Computer Inc. Computer housing shock absorber device for a vibration source frame
DE202008001613U1 (de) * 2008-01-25 2009-06-10 Ebm-Papst St. Georgen Gmbh & Co. Kg Lüftereinheit mit einem Axiallüfter
JP6531485B2 (ja) * 2015-05-15 2019-06-19 富士通株式会社 ファン及び電子機器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8326902U1 (de) * 1983-09-19 1984-02-02 Nixdorf Computer Ag, 4790 Paderborn Befestigungselement fuer die befestigung eines zwei im abstand hintereinander angeordnete tragflansche aufweisenden geraetes
DE3429993A1 (de) * 1984-08-16 1986-02-27 Schroff Gmbh, 7541 Straubenhardt Befestigungsvorrichtung fuer elektrische axialluefter
DE3541787A1 (de) * 1985-11-26 1987-06-04 Papst Motoren Gmbh & Co Kg Geblaese mit einem im wesentlichen quaderfoermigen gehaeuse
DE8707975U1 (de) * 1987-06-04 1988-09-29 Siemens AG, 1000 Berlin und 8000 München Befestigungsvorrichtung für einen Axiallüfter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104295515A (zh) * 2013-07-15 2015-01-21 奇鋐科技股份有限公司 串联风扇结合结构

Also Published As

Publication number Publication date
FI931703A (fi) 1993-06-10
SE9102382L (sv) 1993-02-17
FI931703A0 (fi) 1993-04-15
SE9102382D0 (sv) 1991-08-16
DE69208664D1 (de) 1996-04-04
DE69208664T2 (de) 1996-10-02
FI102001B (fi) 1998-09-30
SE469041B (sv) 1993-05-03
WO1993004289A1 (en) 1993-03-04
FI102001B1 (fi) 1998-09-30
EP0596043A1 (en) 1994-05-11

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