EP1813820A1 - Kraftfahrzeuglüfter und mit diesem versehen Kraftfahrzeugfrontteil - Google Patents

Kraftfahrzeuglüfter und mit diesem versehen Kraftfahrzeugfrontteil Download PDF

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Publication number
EP1813820A1
EP1813820A1 EP07290103A EP07290103A EP1813820A1 EP 1813820 A1 EP1813820 A1 EP 1813820A1 EP 07290103 A EP07290103 A EP 07290103A EP 07290103 A EP07290103 A EP 07290103A EP 1813820 A1 EP1813820 A1 EP 1813820A1
Authority
EP
European Patent Office
Prior art keywords
fan
propeller
blades
auxiliary air
air deflector
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.)
Granted
Application number
EP07290103A
Other languages
English (en)
French (fr)
Other versions
EP1813820B1 (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
Not-in-force 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

  • 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 of the aforementioned type, characterized in that the or each auxiliary air deflector is integral with the rotary propeller to be rotated with the propeller, and is disposed substantially in the volume swept by the blades during the rotation of the propeller.
  • the fans according to the invention are intended to be used in front blocks of motor vehicles.
  • FIG. 1 A front block 10 according to the invention is shown schematically in FIG. 1.
  • This front block comprises a frame 12 integral with the vehicle body, a heat exchanger 14 placed at the rear of the frame 12, and a first fan 16 according to the invention. the invention, fixed on 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 ferrule 24 of XX 'axis connecting the blades 22 to each other 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, at the bottom in FIG. 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 rotor. helix which corresponds to the direction of rotation of the hands of a watch.
  • 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 baffles 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 baffles 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 shapes opposite 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 situated 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)
EP07290103A 2006-01-27 2007-01-25 Kraftfahrzeuglüfter und mit diesem versehen Kraftfahrzeugfrontteil Not-in-force 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 true EP1813820A1 (de) 2007-08-01
EP1813820B1 EP1813820B1 (de) 2009-09-09

Family

ID=37084845

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07290103A Not-in-force 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)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102966591A (zh) * 2012-11-14 2013-03-13 浙江鸿友压缩机制造有限公司 一种轴流式流体驱动装置
EP2843239A3 (de) * 2013-09-03 2015-04-08 Cooler Master Co., Ltd. Lüfter und Laufrad dafür
US20160146088A1 (en) * 2014-11-20 2016-05-26 Jeff Richardson Cooling Fan Assembly
WO2017017264A1 (de) * 2015-07-29 2017-02-02 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Lüfterrad und kühlerlüftermodul
WO2021181025A1 (fr) * 2020-03-13 2021-09-16 Valeo Systemes Thermiques Systeme de ventilation pour moteur

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4411598A (en) 1979-12-12 1983-10-25 Nissan Motor Company, Limited Fluid propeller fan
WO2001096746A1 (en) 2000-06-16 2001-12-20 Robert Bosch Corporation Automotive fan assembly with flared shroud and fan with conforming blade tips
WO2002038962A2 (en) 2000-11-08 2002-05-16 Robert Bosch Corporation High-efficiency, inflow-adapted, axial-flow fan
US20020085912A1 (en) 2001-01-02 2002-07-04 Uwe Blass Fan having axial blades
US6468037B1 (en) 1999-08-06 2002-10-22 American Cooling Systems, Llc Fan clutch with central vanes to move air to fan blades

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4411598A (en) 1979-12-12 1983-10-25 Nissan Motor Company, Limited Fluid propeller fan
US6468037B1 (en) 1999-08-06 2002-10-22 American Cooling Systems, Llc Fan clutch with central vanes to move air to fan blades
WO2001096746A1 (en) 2000-06-16 2001-12-20 Robert Bosch Corporation Automotive fan assembly with flared shroud and fan with conforming blade tips
WO2002038962A2 (en) 2000-11-08 2002-05-16 Robert Bosch Corporation High-efficiency, inflow-adapted, axial-flow fan
US20020085912A1 (en) 2001-01-02 2002-07-04 Uwe Blass Fan having axial blades

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102966591A (zh) * 2012-11-14 2013-03-13 浙江鸿友压缩机制造有限公司 一种轴流式流体驱动装置
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
EP2843239A3 (de) * 2013-09-03 2015-04-08 Cooler Master Co., Ltd. Lüfter und Laufrad dafür
US20160146088A1 (en) * 2014-11-20 2016-05-26 Jeff Richardson Cooling Fan Assembly
WO2017017264A1 (de) * 2015-07-29 2017-02-02 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Lüfterrad und kühlerlüftermodul
US20180202452A1 (en) * 2015-07-29 2018-07-19 Brose Fahlzeugteile GmbH & Co. Kommanditgesellscha Würzburg Fan impeller and radiator fan module
US10563664B2 (en) * 2015-07-29 2020-02-18 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Fan impeller and radiator fan module
WO2021181025A1 (fr) * 2020-03-13 2021-09-16 Valeo Systemes Thermiques Systeme de ventilation pour moteur
FR3108065A1 (fr) * 2020-03-13 2021-09-17 Valeo Systemes Thermiques Systeme de ventilation pour moteur

Also Published As

Publication number Publication date
FR2896830A1 (fr) 2007-08-03
EP1813820B1 (de) 2009-09-09
ES2329305T3 (es) 2009-11-24
DE602007002309D1 (de) 2009-10-22
FR2896830B1 (fr) 2010-09-17

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