EP0387987A2 - Stabilisatorring für Ventilatormontagevorrichtung - Google Patents

Stabilisatorring für Ventilatormontagevorrichtung Download PDF

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Publication number
EP0387987A2
EP0387987A2 EP90300979A EP90300979A EP0387987A2 EP 0387987 A2 EP0387987 A2 EP 0387987A2 EP 90300979 A EP90300979 A EP 90300979A EP 90300979 A EP90300979 A EP 90300979A EP 0387987 A2 EP0387987 A2 EP 0387987A2
Authority
EP
European Patent Office
Prior art keywords
fan
mounting apparatus
ring
inner ring
support
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.)
Withdrawn
Application number
EP90300979A
Other languages
English (en)
French (fr)
Other versions
EP0387987A3 (de
Inventor
Daryl G. Harris
William E. Schaid
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.)
Motors Liquidation Co
Original Assignee
Motors Liquidation Co
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 Motors Liquidation Co filed Critical Motors Liquidation Co
Publication of EP0387987A2 publication Critical patent/EP0387987A2/de
Publication of EP0387987A3 publication Critical patent/EP0387987A3/de
Withdrawn legal-status Critical Current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
    • F04D29/40—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
    • 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
    • F04D29/544—Blade shapes

Definitions

  • the present invention relates generally to automotive engine cooling systems as specified in the preamble of Claim 1, for example as disclosed in US-A-4,548 548, and in particular is concerned with a stabilizer element added to a mounting apparatus for an automotive engine cooling fan to strengthen the mounting apparatus.
  • engine cooling systems for automotive vehicles include a fan for increasing the quantity of airflow through a radiator.
  • An engine cooling fan is mounted on a bracket or shroud adjacent a radiator.
  • Such fans may be driven by mechanical connection to an engine shaft or by other means, e.g. electric current.
  • an engine cooling fan produces two types of airflow from the fan blades. First, axial airflow is discharged from the fan blades in a direction generally parallel to the fan axis of rotation. Second, radial airflow is discharged from the fan blades in a direction generally perpendicular to the fan axis of rotation. Whilst axial airflow provides the majority of cooling air in an engine compartment, radial airflow provides only a minimal cooling effect.
  • a fan-mounting apparatus i.e. a bracket, or a shroud
  • the mounting apparatus would be constructed from minimal mass and be capable of withstanding the torsional stresses induced by airflow and vibrations from the fan.
  • improved mounting brackets and shrouds redirect the radial airflow to axial airflow to increase the cooling effect of the system.
  • airflow noise from a strengthened mounting apparatus be no greater than the noise associated with conventional shrouds and brackets.
  • a fan-mounting apparatus is characterised by the features specified in the characterising portion of claim 1.
  • the present invention includes a stabilizer element added to a shroud or bracket for strengthening the mounting apparatus.
  • the present stabilizer redirects radial airflow to axial airflow to increase fan efficiency.
  • the present stabilizer is economical and can be incorporated with conventional mounting brackets and shrouds, and does not add any appreciable noise from airflow.
  • the present invention includes a mounting bracket for an engine cooling fan.
  • a central hub removably receives the fan.
  • Support vanes extend radially from the hub to an outer support ring.
  • At least one inner ring is provided between the hub and the outer support ring.
  • Each inner ring includes a surface for redirecting radial airflow to axial airflow.
  • the stabilizer element can be formed as a ring or circular element, or as a plurality of arcuate portions spaced at selected radii from the central hub.
  • the cross-section and radius of each arcuate section can be selected to optimize a desired function, e.g. structural re-inforcement, redirection of radial airflow or noise abatement.
  • a stabilizer element according to the present invention is incorporated in a fan shroud ( Figures 1-2) and in a pair of mounting brackets ( Figures 8 and 9). It should be understood that the stabilizer element according to the present invention can be incorporated in any selected conventional fan-mounting apparatus.
  • a first preferred embodiment of the present invention is incorporated in a shroud, indicated generally at 10 in Figures 1 and 2.
  • Shroud 10 can be formed from any suitable plastics or mouldable material and includes a rectilinear face plate 12 bounded by a peripheral and forwardly-extending wall 14.
  • Shroud 10 can be mounted in an engine compartment adjacent a radiator (not illustrated) by conventional fasteners (not illustrated) at mounting ears 16. If desired, various mounting ears and brackets can be incorporated with shroud 10 to facilitate mounting in an engine compartment.
  • Face plate 12 includes a rearwardly-­extending cylindrical ejector 18 which forms the rear, discharge end of shroud 10.
  • the diameter of ejector 18 is slightly greater than the diameter of the blades of a fan 101 (illustrated only in Figure 1).
  • Ejector 18 includes an outwardly-­flaring bellmouth portion 20.
  • Fan 101 is removably mounted on support collar 22 by conventional fasteners (not illustrated). Fan 101 can be driven by a conventional electric motor or can be mechanically connected to an engine power shaft. As fan 101 is rotated, air is pulled from the radiator side of shroud 10 through ejector 18 and blown onto an engine.
  • Axial airflow 102 which is generally parallel to a fan axis of rotation 103, provides the major portion of the cooling effect.
  • a plurality of radially-extending stator vanes 24 are provided between the support collar 22 and ejector 18.
  • Each vane 24 is a planar member having ends integrally moulded with the support collar 22 and ejector 18.
  • a concentric, stabilizer ring 26 is provided between vanes 24.
  • Ring 26 is formed from a mouldable, plastics material and can be integrally moulded with vanes 24. Ring 26 performs two major purposes. Firstly, ring 26 stabilizes vanes 24 against torsional stresses induced from airflow, thereby increasing the structural integrity of shroud 10. Secondly, ring 26 redirects radial airflow to axial airflow, and thereby improves the cooling efficiency of the fan 101.
  • ring 26 can vary, depending upon which function of the ring is to be maximized.
  • the ring 26, illustrated in detail in Figures 3A and 3B is a curved member having a thickness T and a face 27 of a width W equal to the width of vanes 24. As illustrated in Figure 3B, when radial airflow 104 encounters face 27, it is redirected to axial airflow 102.
  • ring 26 has a diameter approximately 60-70% the diameter of the ejector 18. In other embodiments, ring 26 may have a diameter in a range of 10-90% of the diameter of ejector 18. For example, in most fans, the airflow discharged near an outer tip of a fan blade is greater than the airflow discharged near a hub of the fan. If it is preferred to maximize the redirection of radial airflow 104 to axial airflow 102, ring 26 would be positioned in the maximum zone of radial airflow 104. In another example, the stabilization effect of ring 26 may require that ring 26 be positioned at a point other than the point of maximum radial airflow 104.
  • ring 30 includes a sloped leading edge 31 which acts as a scoop for receiving airflow from fan 101.
  • Ring edge 32 is bounded by end surface 34. Ring edge 32 is provided at an acute angle A with respect to the end surface 34 of vane 24 and ring 30 is oriented with respect to vanes 24 to redirect radial airflow.
  • ring edge 32 is provided flush with end surface 34.
  • ring edge 32 is parallel to and laterally-spaced from end surface 34.
  • a ring 36 having a well-known airfoil shape and cross section is illustrated.
  • a selected ring element can be integrally moulded with vanes 24 at a selected radius from the fan axis of rotation.
  • Bracket 40 includes a central support collar 42 for removably mounting a fan.
  • An outer support ring 44 is provided at approximately the outer tips of a mounted fan (not illustrated).
  • Support vanes 46A-46D having mounting ears 48 extend radially from support collar 42. If desired, support collar 42, outer ring 44, vanes 46A-46D and mounting ears 48 can be integrally moulded.
  • a stabilization ring element 50 is provided between support collar 42 and outer ring 44.
  • ring 50 can be less than 360° and can be formed from a plurality of arcuate portions as illustrated in Figure 8, wherein ring element 50 is not provided between vanes 46A and 46B.
  • ring element 50 can be provided in sections of varying diameter. For example, ring sections 51 and 54 are provided at a smaller radius than ring section 53.
  • Various configurations, cross-sections and shapes of ring element 50 can be provided, depending upon the needs of a particular mounting bracket. Elements such as a mounting tab 52 or section 51 can be moulded with any section on ring element 50.
  • FIG 9 illustrates a second embodiment of a mounting bracket 60 incorporating multiple, concentric stabilizer rings 61, 62, 63 and 64.
  • Bracket 60 includes a support collar 66 having radially extending support vanes 67, 68, and 69 connected to an outer support ring 70.
  • Various mounting ears 72, 73 and 74 are connected to the outer support ring 70.
  • bracket 60 can be moulded as an integral unit.
  • Control rings 61 and 63 are provided at selected radii from the centrepoint of support collar 66.
  • Control rings 62 and 64 are provided at a selected portion of the radial distance about support collar 66.
  • Various support vanes 75-83 are selectively spaced between control rings 61 and the outer support ring 70. Rings 61, 62, 63 and 64 are selectively positioned to stabilize bracket 60 and redirect radial airflow from a fan blade to axial airflow to improve fan efficiency.
  • Each stabilizer ring can be positioned and shaped to maximize the function of stabilization and/or airflow redirection whilst minimizing additional noise.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP19900300979 1989-03-13 1990-01-31 Stabilisatorring für Ventilatormontagevorrichtung Withdrawn EP0387987A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US32247589A 1989-03-13 1989-03-13
US322475 1999-05-28

Publications (2)

Publication Number Publication Date
EP0387987A2 true EP0387987A2 (de) 1990-09-19
EP0387987A3 EP0387987A3 (de) 1990-11-28

Family

ID=23255073

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900300979 Withdrawn EP0387987A3 (de) 1989-03-13 1990-01-31 Stabilisatorring für Ventilatormontagevorrichtung

Country Status (2)

Country Link
EP (1) EP0387987A3 (de)
JP (1) JPH02275098A (de)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0547253A1 (de) * 1991-12-14 1993-06-23 Süd-Electric GmbH Strömungsgleichrichter für einen Ventilator
GB2290832A (en) * 1994-06-14 1996-01-10 Clive Felix Ure Means for linearizing an open air flow
US5498130A (en) * 1994-10-18 1996-03-12 Itt Automotive Electrical Systems Inc. Cooling fan mounting system
GB2298458A (en) * 1995-03-02 1996-09-04 Lucas Aerospace Power Equip Cooling electromechanical apparatus
GB2324572A (en) * 1996-12-10 1998-10-28 Papst Motoren Gmbh & Co Kg Axial fan housing
FR2789450A1 (fr) * 1998-12-30 2000-08-11 Valeo Thermique Moteur Sa Stator pour ventilateur
DE19751042C2 (de) * 1996-11-21 2002-04-25 Zexel Valeo Climate Contr Corp Kühlgebläse
US6503060B1 (en) 1999-08-09 2003-01-07 Daikin Industries, Ltd. Fan guard of blower unit and air conditioner
DE102005046180B3 (de) * 2005-09-27 2007-03-22 Siemens Ag Lüftermodul
EP2357366A1 (de) * 2008-12-05 2011-08-17 Mitsubishi Heavy Industries, Ltd. Wärmetauschmodul für ein fahrzeug und fahrzeug damit
CN103423206A (zh) * 2013-07-15 2013-12-04 中国第一汽车股份有限公司 一种强制风扇离合器冷却的汽车风扇旋流罩总成
DE102012109542A1 (de) * 2012-10-08 2014-04-10 Ebm-Papst Mulfingen Gmbh & Co. Kg "Strömungsgleichrichter für einen Axiallüfter"
US20150275918A1 (en) * 2014-03-27 2015-10-01 Trane International Inc. Diffuser collar
EP1750015A3 (de) * 2005-08-03 2017-07-05 Mitsubishi Heavy Industries, Ltd. Gehäuse und Flügelzellenrad eines Propellerlüfters und Propellerlüfter
USD805107S1 (en) 2016-12-02 2017-12-12 U.S. Farathane Corporation Engine fan shroud
CN110825195A (zh) * 2018-08-13 2020-02-21 钱军 一种电脑机箱散热风扇

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3178099A (en) * 1963-10-09 1965-04-13 Lachlan W Child Under-body ventilating fan units
FR2503280A1 (fr) * 1981-04-03 1982-10-08 Etri Sa Ventilateur de type plat, notamment pour circuits electroniques

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3178099A (en) * 1963-10-09 1965-04-13 Lachlan W Child Under-body ventilating fan units
FR2503280A1 (fr) * 1981-04-03 1982-10-08 Etri Sa Ventilateur de type plat, notamment pour circuits electroniques

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0547253A1 (de) * 1991-12-14 1993-06-23 Süd-Electric GmbH Strömungsgleichrichter für einen Ventilator
GB2290832A (en) * 1994-06-14 1996-01-10 Clive Felix Ure Means for linearizing an open air flow
US5498130A (en) * 1994-10-18 1996-03-12 Itt Automotive Electrical Systems Inc. Cooling fan mounting system
GB2298458A (en) * 1995-03-02 1996-09-04 Lucas Aerospace Power Equip Cooling electromechanical apparatus
FR2731306A1 (fr) * 1995-03-02 1996-09-06 Lucas Aerospace Power Equip Diffuseur d'air de refroidissement monobloc pour dispositif electromecanique
US5731644A (en) * 1995-03-02 1998-03-24 Lucas Aerospace Power Equipment Corporation Integral cooling air diffuser for electromechanical apparatus
GB2298458B (en) * 1995-03-02 1999-01-06 Lucas Aerospace Power Equip Integral cooling air diffuser for electromechanical apparatus
DE19751042C2 (de) * 1996-11-21 2002-04-25 Zexel Valeo Climate Contr Corp Kühlgebläse
GB2324572A (en) * 1996-12-10 1998-10-28 Papst Motoren Gmbh & Co Kg Axial fan housing
US6017191A (en) * 1996-12-10 2000-01-25 Papst-Motoren Gmbh & Co. Kg Axial ventilator housing
GB2324572B (en) * 1996-12-10 2000-10-11 Papst Motoren Gmbh & Co Kg Axial fan housing
FR2789450A1 (fr) * 1998-12-30 2000-08-11 Valeo Thermique Moteur Sa Stator pour ventilateur
US6503060B1 (en) 1999-08-09 2003-01-07 Daikin Industries, Ltd. Fan guard of blower unit and air conditioner
EP1750015A3 (de) * 2005-08-03 2017-07-05 Mitsubishi Heavy Industries, Ltd. Gehäuse und Flügelzellenrad eines Propellerlüfters und Propellerlüfter
DE102005046180B3 (de) * 2005-09-27 2007-03-22 Siemens Ag Lüftermodul
US8100665B2 (en) 2005-09-27 2012-01-24 Brose Fahrzeugteile Gmbh & Co. Kg Wurzburg Fan module
EP2357366A1 (de) * 2008-12-05 2011-08-17 Mitsubishi Heavy Industries, Ltd. Wärmetauschmodul für ein fahrzeug und fahrzeug damit
EP2357366A4 (de) * 2008-12-05 2017-04-26 Mitsubishi Heavy Industries, Ltd. Wärmetauschmodul für ein fahrzeug und fahrzeug damit
DE102012109542A1 (de) * 2012-10-08 2014-04-10 Ebm-Papst Mulfingen Gmbh & Co. Kg "Strömungsgleichrichter für einen Axiallüfter"
CN103423206A (zh) * 2013-07-15 2013-12-04 中国第一汽车股份有限公司 一种强制风扇离合器冷却的汽车风扇旋流罩总成
US20150275918A1 (en) * 2014-03-27 2015-10-01 Trane International Inc. Diffuser collar
CN106414129A (zh) * 2014-03-27 2017-02-15 特灵国际有限公司 扩散器环
US9945391B2 (en) * 2014-03-27 2018-04-17 Trane International Inc. Diffuser collar
USD805107S1 (en) 2016-12-02 2017-12-12 U.S. Farathane Corporation Engine fan shroud
CN110825195A (zh) * 2018-08-13 2020-02-21 钱军 一种电脑机箱散热风扇

Also Published As

Publication number Publication date
EP0387987A3 (de) 1990-11-28
JPH02275098A (ja) 1990-11-09

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