EP1813820B1 - Kraftfahrzeuglüfter und mit diesem versehen Kraftfahrzeugfrontteil - Google Patents

Kraftfahrzeuglüfter und mit diesem versehen Kraftfahrzeugfrontteil Download PDF

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Publication number
EP1813820B1
EP1813820B1 EP07290103A EP07290103A EP1813820B1 EP 1813820 B1 EP1813820 B1 EP 1813820B1 EP 07290103 A EP07290103 A EP 07290103A EP 07290103 A EP07290103 A EP 07290103A EP 1813820 B1 EP1813820 B1 EP 1813820B1
Authority
EP
European Patent Office
Prior art keywords
fan
propeller
blades
auxiliary air
hub
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 - Fee Related
Application number
EP07290103A
Other languages
English (en)
French (fr)
Other versions
EP1813820A1 (de
Inventor
Yannick Rannou
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.)
Faurecia Cooling Systems SAS
Original Assignee
Faurecia Cooling Systems SAS
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 Faurecia Cooling Systems SAS filed Critical Faurecia Cooling Systems SAS
Publication of EP1813820A1 publication Critical patent/EP1813820A1/de
Application granted granted Critical
Publication of EP1813820B1 publication Critical patent/EP1813820B1/de
Expired - Fee Related 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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
    • F04D29/326—Rotors specially for elastic fluids for axial flow pumps for axial flow fans comprising a rotating shroud
    • 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
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
    • F04D29/327—Rotors specially for elastic fluids for axial flow pumps for axial flow fans with non identical blades
    • 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
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
    • F04D29/329—Details of the hub
    • 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
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38—Blades
    • F04D29/384—Blades characterised by form

Definitions

  • the present invention relates to a motor vehicle fan according to the preamble of claim 1.
  • Such a fan is intended to be used in a front block of a motor vehicle to produce an air flow capable of sweeping the engine radiator, or a heat exchanger of an air conditioning assembly.
  • WO 01/96746 a fan of the aforementioned type, which comprises a rotating helix about an axis.
  • the propeller comprises a hub and a plurality of blades.
  • the propeller is disposed in a housing that defines an air flow duct.
  • a plurality of auxiliary deflectors integral with the housing are arranged in the conduit.
  • WO 01/96746 proposes to modify the shape of the end of the blades to make it elliptical.
  • An object of the invention is therefore to obtain a helix which produces a reduced noise, without significantly increasing the cost of the fan.
  • the subject of the invention is a motor vehicle fan according to claim 1.
  • the fan according to the invention may comprise one or more of the following features, which are the subject of claims 2 to 8.
  • the invention also relates to a front block for a motor vehicle, according to claim 9.
  • the fans according to the invention are intended to be used in front blocks of motor vehicles.
  • a front block 10 according to the invention is shown schematically on the Figure 1 .
  • This front block comprises a frame 12 secured to the vehicle body, a heat exchanger 14 placed at the rear of the frame 12, and a first fan 16 according to the invention, fixed to the frame 12.
  • the fan 16 comprises a propeller 18 rotatably mounted about a first substantially horizontal axis X-X 'and a motor 19 for rotating the propeller 18.
  • the propeller 18 comprises, according to the invention, a central hub 20 of axis X-X ', a plurality of blades 22 extending radially from the hub 20, a shell 24 of axis XX' connecting the blades 22 between them and a plurality of auxiliary deflectors 26A, 26B disposed between the ferrule 24 and the hub 20 in the volume swept by the blades 22 during the rotation of the propeller 18.
  • the hub 20 is formed by a bowl 28 opening towards the rear, down on the Figure 2 . It comprises means of connection to an output shaft of the engine 19.
  • the propeller 18 comprises four blades 22 distributed around the axis X-X '.
  • the blades 22 protrude radially away from the hub 20 and connect the hub 20 to the shell 24.
  • the blades 22 are inclined towards the front of the helix 18 with respect to a plane P perpendicular to the axis X-X ', moving in the direction of rotation of the helix which corresponds to the direction of rotation of the Clockwise.
  • the blades 22 thus have a shape in "front bow”.
  • the blades 22 have a concave leading edge and a convex trailing edge.
  • the shell 24 comprises a substantially cylindrical ring 30 of axis X-X 'extending opposite the hub 20 and an outer edge 32 which projects radially outwards from a front edge of the ring 30.
  • the free ends of the blades 22 are fixed on an inner surface of the ring 30.
  • the auxiliary deflectors 26A, 26B are divided into a first group of inner deflectors 26A and a second group of outer deflectors 26B.
  • Each auxiliary deflector 26A, 26B has a radial extent smaller than the radial extent of each blade 22.
  • each deflector 26A, 26B is less than half of the radial extent of the blades 22, taken between the hub and the ferrule 24.
  • the radial extent of each deflector auxiliary air 26A, 26B is less than a quarter of the radial extent of the blades 22.
  • the propeller 18 comprises four inner deflectors 26A.
  • Each inner baffle 26A is disposed between two adjacent blades 22, substantially midway between the blades 22.
  • Each inner baffle 26A protrudes radially in the free space between the hub 20 and the ring 30 from an outer side surface of the hub 20.
  • the inner air deflectors 26A have a shape substantially similar to that of the adjacent blades 22.
  • they have a configuration "forward front", an inclination relative to the plane P similar to that of the adjacent blades 22, and a cross section substantially similar to that of the blades 22 adjacent.
  • they have, like the adjacent blades 22, a concave leading edge and a convex trailing edge.
  • the outer auxiliary deflectors 26B are located on the same circumference between two blades 22.
  • the propeller 18 comprises two auxiliary deflectors 26B located between each pair of adjacent blades 22.
  • the outer deflectors 26B protrude internally in the space between the ring 30 and the hub 20 from the ring 30.
  • the outer baffles 26B are substantially of the same shape as the adjacent blades 22. They have a shape in front of, a slope relative to the plane P similar to that of the adjacent blades 22, and a section similar to that of the blades 22 adjacent.
  • the propeller 18 is rotated by the engine 19, and the blades 22 create a flow of air that scans the radiator 14.
  • auxiliary air deflectors 26A, 26B integral with the rotary propeller 18 to be rotated with this propeller 18, redirects the flow of air into the space between the shell 24 and the hub 20 As a result, the efficiency of the helix 18 is improved, and the noise generated by the helix 18 is decreased or is produced in frequencies less troublesome to the user of the vehicle.
  • the propeller 18 comprises a plurality of inner deflectors 26A of opposite shapes to those of the adjacent blades 22.
  • the deflectors 26A have a shape called "backwards".
  • the deflectors 26A have, in contrast to adjacent blades 22, a convex leading edge and a concave trailing edge.
  • the lower auxiliary deflectors 26A have a free edge 38, located away from the hub 20 which has a non-constant radial extent with respect to the hub 20.
  • the radial extent of a leading edge 40 of the deflector 26A is smaller than the radial extent of a trailing edge 42 of this deflector 26A.
  • the radial extent of the leading edge 40 is greater than the radial extent of the trailing edge 42.
  • auxiliary air deflectors 26A, 26B are adjusted according to the operating speed of the propeller 18, without it being necessary to modify the external shape of the propeller 18.
  • auxiliary air deflectors 26A, 26B are integral with the rotary propeller 18 to be rotated with this propeller 18, and are arranged in the volume swept by the blades 22 of the propeller 18. It is therefore not necessary to modify the external shape of the propeller 18, nor the shape of the shroud intended to receive the propeller 18.
  • the manufacture of the fan 16 can be standardized, with the exception of the specific shape of the blades 22 and the auxiliary deflectors 26A, 26B of the propeller 18. As a result, the price of the fan 16 is reduced, without harming the acoustic properties of the propeller 18.
  • the aeraulic properties of the helix 18 are improved, to produce an increase in the air pressure difference across the helix 18, or for a given pressure, an increase in the flow rate through the helix 18.
  • a balance weight is mounted at the proximal free end of one or more external auxiliary baffles 26B.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (9)

  1. Ventilator (16) für Kraftfahrzeuge, von der Bauart, die Folgendes aufweist:
    - eine um eine Achse (X-X') drehbare Luftschraube (18), die eine Nabe (20) und mehrere Flügel (22) aufweist;
    - mindestens einen zusätzlichen Luftablenker (26A, 26B) mit einer radialen Abmessung, die kleiner ist als die radiale Abmessung jedes Flügels (22);
    - wobei der oder jeder zusätzliche Luftablenker (26A, 26B) mit der drehbaren Luftschraube (18) drehfest ist, um mit der Luftschraube (18) angetrieben zu werden, und im Wesentlichen in dem Volumen angeordnet ist, das von den Flügeln (22) bei der Drehung der Luftschraube (18) durchstrichen wird, dadurch gekennzeichnet, dass die Luftschraube (18) einen umfänglichen Ringbeschlag (24) aufweist, der die freien Enden der Flügel (22) verbindet, wobei mindestens ein zusätzlicher Luftablenker (26B) ausgehend vom Ringbeschlag (24) radial zur Nabe (20) vorsteht.
  2. Ventilator (16) nach Anspruch 1, dadurch gekennzeichnet, dass mindestens ein zusätzlicher Luftablenker (26A) ausgehend von der Nabe (20) radial vorsteht.
  3. Ventilator (16) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die radiale Abmessung des oder jedes zusätzlichen Luftablenkers (26A, 26B) kleiner als die Hälfte der radialen Abmessung jedes Flügels (22) ist.
  4. Ventilator (16) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass mindestens ein zusätzlicher Luftablenker (26A, 26B) eine Form aufweist, die zu derjenigen der angrenzenden Flügel (22) im Wesentlichen analog ist.
  5. Ventilator (16) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass mindestens ein Flügel (22) und jeder angrenzende zusätzliche Luftablenker (26A) analoge Neigungen aufweisen.
  6. Ventilator (16) nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass mindestens ein Flügel (22) eine Neigung aufweist, wobei jeder angrenzende zusätzliche Luftablenker (26A) eine entgegengesetzte Neigung aufweist.
  7. Ventilator (16) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass er mehrere zusätzliche Luftablenker (26A, 26B) aufweist, die sich zwischen zwei benachbarten Flügeln (22) befinden.
  8. Ventilator (16) nach Anspruch 7, dadurch gekennzeichnet, dass die zusätzlichen Luftablenker (26B), die sich zwischen zwei benachbarten Flügeln (22) befinden, im Wesentlichen auf demselben Kreisumfang angeordnet sind.
  9. Frontblock (10) für Kraftfahrzeuge, dadurch gekennzeichnet, dass er aufweist:
    - einen Rahmen (12), der dazu bestimmt ist, an einem Kraftfahrzeugchassis befestigt zu werden; und
    - einen Ventilator (16) nach einem der vorhergehenden Ansprüche, der an dem Rahmen (12) befestigt ist.
EP07290103A 2006-01-27 2007-01-25 Kraftfahrzeuglüfter und mit diesem versehen Kraftfahrzeugfrontteil Expired - Fee Related EP1813820B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0600782A FR2896830B1 (fr) 2006-01-27 2006-01-27 Ventilateur pour vehicule automobile et bloc avant associe.

Publications (2)

Publication Number Publication Date
EP1813820A1 EP1813820A1 (de) 2007-08-01
EP1813820B1 true EP1813820B1 (de) 2009-09-09

Family

ID=37084845

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07290103A Expired - Fee Related EP1813820B1 (de) 2006-01-27 2007-01-25 Kraftfahrzeuglüfter und mit diesem versehen Kraftfahrzeugfrontteil

Country Status (4)

Country Link
EP (1) EP1813820B1 (de)
DE (1) DE602007002309D1 (de)
ES (1) ES2329305T3 (de)
FR (1) FR2896830B1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102966591B (zh) * 2012-11-14 2015-01-21 浙江鸿友压缩机制造有限公司 一种轴流式流体驱动装置
CN203453120U (zh) * 2013-09-03 2014-02-26 讯凯国际股份有限公司 风扇及其风扇叶轮
US20160146088A1 (en) * 2014-11-20 2016-05-26 Jeff Richardson Cooling Fan Assembly
DE102015214356A1 (de) * 2015-07-29 2017-02-02 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Lüfterrad und Kühlerlüftermodul
FR3108065B1 (fr) * 2020-03-13 2022-02-18 Valeo Systemes Thermiques Systeme de ventilation pour moteur

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5688995U (de) * 1979-12-12 1981-07-16
US6468037B1 (en) * 1999-08-06 2002-10-22 American Cooling Systems, Llc Fan clutch with central vanes to move air to fan blades
KR100978594B1 (ko) 2000-06-16 2010-08-27 로버트 보쉬 코포레이션 블레이드 선단에 일치하는 플레어형 보호판 및 팬을 구비한자동차의 팬 조립체
EP1337758B1 (de) * 2000-11-08 2006-02-08 Robert Bosch Corporation Hocheffizienter, zustromangepasster axiallüfter
DE50110684D1 (de) * 2001-01-02 2006-09-21 Behr Gmbh & Co Kg Lüfter mit Axialschlaufen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Les Techniques de l'Ingénieur" *

Also Published As

Publication number Publication date
FR2896830A1 (fr) 2007-08-03
FR2896830B1 (fr) 2010-09-17
ES2329305T3 (es) 2009-11-24
EP1813820A1 (de) 2007-08-01
DE602007002309D1 (de) 2009-10-22

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