EP1887195B1 - Dispositif de refroidissement pour un véhicule automobile - Google Patents

Dispositif de refroidissement pour un véhicule automobile Download PDF

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Publication number
EP1887195B1
EP1887195B1 EP07013631.2A EP07013631A EP1887195B1 EP 1887195 B1 EP1887195 B1 EP 1887195B1 EP 07013631 A EP07013631 A EP 07013631A EP 1887195 B1 EP1887195 B1 EP 1887195B1
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EP
European Patent Office
Prior art keywords
radial
fan
flow guidance
cooling means
guidance elements
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.)
Not-in-force
Application number
EP07013631.2A
Other languages
German (de)
English (en)
Other versions
EP1887195A2 (fr
EP1887195A3 (fr
Inventor
Uwe Blass
Ulrich Vollert
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.)
Mahle Behr GmbH and Co KG
Original Assignee
Mahle Behr GmbH and Co KG
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Filing date
Publication date
Application filed by Mahle Behr GmbH and Co KG filed Critical Mahle Behr GmbH and Co KG
Publication of EP1887195A2 publication Critical patent/EP1887195A2/fr
Publication of EP1887195A3 publication Critical patent/EP1887195A3/fr
Application granted granted Critical
Publication of EP1887195B1 publication Critical patent/EP1887195B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
    • F01P5/06—Guiding or ducting air to, or from, ducted fans
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/10—Guiding or ducting cooling-air, to, or from, liquid-to-air heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2070/00—Details
    • F01P2070/50—Details mounting fans to heat-exchangers

Definitions

  • the invention relates to a cooling device for a motor vehicle according to the preamble of claim 1.
  • Such a cooling device with an axial fan has been characterized by DE 44 38 184 C1 the Applicant known, wherein the axial fan arranged fixed to the engine and by the internal combustion engine - directly or indirectly - is driven.
  • the axial fan is surrounded by a fan cowl or a Zargenring, which is also arranged fixed to the engine.
  • the applicant was another cooling device with motor-mounted axial fan known, which has a connected to the fan blades guide ring or mantle, which cooperates with a motor-fixed inlet nozzle.
  • Another cooling device with motor-resistant frame and with a driven via a fluid friction clutch axial fan was through the DE 40 15 259 A1 known.
  • the axial fan is arranged relatively close to the engine block and operates at a relatively heavy throttling operating point. This results in the axial fan semi-axial or semi-radial flow in the outflow of the fan, the air accumulates in front of the engine block and other units, and it can lead to a recirculation of the leaked air flow, ie a re-entry into the cooler, which reduces the cooling capacity.
  • cooling devices for motor vehicles DE 42 22 264 A1
  • the axial fan is driven not by the internal combustion engine, but by an electric motor, which is connected via a Zargenring and a radiator frame with the radiator. Even with this arrangement, recirculation phenomena can occur with the associated cooling power reductions when installed close to the engine.
  • a similar cooling device with flow guide with straight formed, arranged in a radial plane, leading edges is from the EP1016790 known.
  • radial flow guide elements are arranged behind the axial fan in the direction of airflow, that is to say in the direction of flow.
  • H Flow guide elements which extend substantially in the radial direction and thus form a downstream radial guide.
  • the advantage of the radial flow guide elements is that an additional delay in the outflow field behind the fan is achieved.
  • the radial flow guide elements are uniformly distributed over the circumference and preferably formed scoop-shaped. This gives the advantage of a maximum pressure recovery from the swirling fan outlet flow.
  • the radial flow guide elements preferably extend over the entire radial area of the fan blades, ie from the hub diameter to the fan outside diameter.
  • the axial depth of the radial flow guide elements increases from the inside to the outside.
  • the Zargenring as seen in the air flow direction, radially expanded and thus forms a flow guide device in the manner of a diffuser.
  • the radial flow guiding elements can be connected to the flow guiding device, i. H. preferably be sprayed on this. This results in the advantage of ease of manufacture and attachment.
  • the radial flow guide from hub diameter of the fan to the outer diameter of the diffuser-like flow guide extend - thus a maximum effect in terms of pressure recovery and flow deflection is achieved.
  • the radial flow guide elements extend only over the radial region of the diffuser-like flow guide, d. H. radially outside the fan diameter. Such a radially shortened design of the radial flow guide is opposed to the semi-axial fan flow.
  • Fig. 1 shows a cooling device 1 for an internal combustion engine 2 of a motor vehicle, not shown.
  • the cooling device 1 comprises a coolant radiator 3, an axial fan 4, a frame 5, a frame ring 6 and a diffuser-like flow-guiding device 7, which is formed here in one piece with the frame ring 6.
  • the cooler 3 is the primary side of coolant flowing through a cooling circuit, not shown, for the internal combustion engine and the secondary side of ambient air in the direction of an arrow L.
  • the fan 4 has a hub 4a and a Axialbeschaufelung 4b and is driven by the internal combustion engine 2 in a manner not shown - directly or indirectly -.
  • the fan hub 4a is thus mounted fixed to the engine and can be driven for example via a non-illustrated fluid friction clutch according to the above-mentioned prior art.
  • the fan hub 4a has a rotation axis a and a hub diameter D N.
  • the outer diameter of the fan blades (blade tips) is marked D L.
  • the Zargenring 6 including flow guide 7 is supported by a bracket, not shown, relative to the engine block 2.
  • the frame 5 also called fan cover
  • the frame 5 is attached to the radiator 3 and is sealed by a circumferential sealing lip 8 relative to the frame ring 6, wherein at the same time a compensation for relative movements between the radiator 3 and frame ring 6 is possible.
  • the designed as a diffuser flow guide 7 is the subject of a parallel patent application (internal patent of the applicant: 06-B-059), which is fully incorporated in the disclosure of this application. It is therefore omitted at this point to a detailed description of the design and function of the flow guide 7 and instead referred to the said simultaneous patent application.
  • the flow guide 9 shown in the drawing has a straight, arranged in a radial plane free front edge 9a, a curved free trailing edge 9b and a connecting edge 9c with the diffuser 7.
  • the radial flow guide elements 9 are thus supported relative to the diffuser 7 and the Zargering 6 and thus arranged motor fixed.
  • the outer diameter of the diffuser 7 is denoted by D D.
  • Fig. 1a shows a guided in the circumferential direction section through a fan blade 4b and in the air flow direction L behind arranged flow guide 9 with leading edge 9a and trailing edge 9b.
  • the illustration shows that the flow guide 9 has a schaufefförmiges profile with a curvature, which is opposite to the curvature of the fan blade 4b.
  • the fan blade 4b moves in the circumferential direction according to an arrow u and generates an outflow vector, not shown, which strikes the concave side of the blade profile 9.
  • a pressure recovery is generated from the swirl in the fan outflow and the kinetic energy of the flow is converted into static pressure.
  • Fig. 2 shows the cooling device 1 according to Fig. 1 as a view in the axial direction and against the air flow direction L.
  • the flow guide elements 9 are - as the illustration shows - substantially radially extending, but slightly curved in the circumferential direction in the embodiment shown here with its trailing edge 9b. In the radially outermost region, ie outside a diameter D 1 , the radial flow guide elements 9 are curved in or against the running direction of the fan. These two more curved regions are labeled 9d and 9e. The direction of rotation of the fan is indicated by an arrow D.
  • the distributed over the circumference number of radial flow guide elements 9 corresponds approximately to the number of fan blades 4b.
  • the effect of the radial flow guide elements 9 according to the invention consists essentially in that the kinetic energy contained in the outflow of the fan 4 is converted into static pressure and the flow - also in conjunction with the diffuser 7 - is deflected in a radial direction, so that harmful remindströmungstendenzen be prevented.
  • the vehicle-side resistance is reduced by the targeted guidance of the fan outflow.
  • the radial flow guide elements 9 extend in the illustrated embodiment of the blade root, ie from the hub diameter D N to the outer diameter D D of the diffuser. It is within the scope of the invention to vary the radial extension of the flow guide elements 9, for example, such that they only extend from the fan diameter D L to the outer diameter D D of the diffuser, that is, they are arranged only in the radial region of the diffuser 7.
  • the flow emerging from the fan 4 is known to already be a semi-radial flow, which is thus "captured" by the flow guide elements arranged on the outside and subjected to a further radial deflection.
  • Fig. 3 shows a further embodiment of the invention, namely a cooling device 10, which has a driven by an electric motor 11 axial fan 12, a so-called sickle fan.
  • the fan 12 runs in a Zargenring 13, which is part of a rectangular-shaped frame 14 (fan cover).
  • the frame 14 is connected to a coolant cooler, not shown.
  • the sickle-shaped fan 12 can be designed as a jacket fan and have a jacket 12 a connected to the blade tips, which rotates in the frame ring 13.
  • the electric motor 11 is connected via struts 15 with the frame ring 13 and with the frame 14.
  • Frame 14 and Zargenring 13 are preferably integrally formed as a plastic injection molded part.
  • the flow guide surfaces 16 are formed as cylindrical surfaces and not distributed over the entire circumference of the Zargenringes 13, but only so far that they do not protrude beyond the outer edge of the rectangular cross-section of the frame 14.
  • Fig. 4 shows a partial section corresponding to the level IV-IV in Fig. 3 ,
  • the fan 12, which rotates in the Zargenring 13 is omitted in this illustration.
  • the flow direction of the air is shown by an arrow L.
  • Downstream of the Zargenringes 13 connect the flow guide 16 directly to the Zargenring 13; they are preferably cylindrically curved, with a cylinder axis which runs parallel to the central axis a of the frame ring 13. This is a shape of Zargenring 13 and 16 flow baffles readily possible.
  • the effect of the flow guide surfaces 16 is that the exiting fan flow is deflected in a radial direction, achieved a pressure recovery and recirculation is avoided.

Claims (10)

  1. Dispositif de refroidissement pour un véhicule automobile équipé d'un moteur à combustion interne (2), ledit dispositif de refroidissement comprenant un radiateur à liquide de refroidissement (3) pouvant être traversé par de l'air, un ventilateur axial (4) disposé, dans la direction d'écoulement d'air (L), derrière le radiateur à liquide de refroidissement (3), un châssis (5) disposé entre le radiateur à liquide de refroidissement (3) et le ventilateur axial (4), ledit châssis comprenant une bague de châssis (6) dans laquelle le ventilateur axial (4) est monté en rotation, où les éléments déflecteurs d'écoulement (9) s'étendant pratiquement en direction radiale sont disposés derrière le ventilateur axial (4, 4b) dans la direction d'écoulement d'air (L), où les éléments déflecteurs d'écoulement radiaux (9) présentent des arêtes avant (9a) qui sont configurées de façon rectiligne et sont disposées dans un plan radial, et caractérisé en ce que les éléments déflecteurs d'écoulement (9) présentent des arêtes arrière (9b) qui sont recourbées dans la direction circonférentielle.
  2. Dispositif de refroidissement selon la revendication 1, caractérisé en ce que les éléments déflecteurs d'écoulement radiaux (9) sont fixés sur la bague de châssis (6).
  3. Dispositif de refroidissement selon la revendication 1 ou 2, caractérisé en ce que les éléments déflecteurs d'écoulement radiaux (9) sont disposés en étant répartis sur la circonférence du ventilateur (4b).
  4. Dispositif de refroidissement selon la revendication 1, 2 ou 3, caractérisé en ce que les éléments déflecteurs d'écoulement radiaux (9) sont configurés en forme d'ailettes.
  5. Dispositif de refroidissement selon l'une quelconque des revendications 1 à 4, caractérisé en ce que les éléments déflecteurs d'écoulement radiaux (9) s'étendent sur une zone radiale allant du diamètre DN du moyeu jusqu'au diamètre DL du ventilateur.
  6. Dispositif de refroidissement selon au moins l'une quelconque des revendications 1 à 5, caractérisé en ce que les éléments déflecteurs d'écoulement radiaux (9) présentent une profondeur axiale qui augmente en allant de l'intérieur dans le sens radial, vers l'extérieur dans le sens radial.
  7. Dispositif de refroidissement selon au moins l'une quelconque des revendications 1 à 6, caractérisé en ce que la bague de châssis (6) est élargie, côté sortie d'air dans le sens radial, en direction d'un dispositif déflecteur d'écoulement (7) conçu comme un diffuseur, et en ce que les éléments déflecteurs d'écoulement radiaux (9) sont fixés sur le dispositif déflecteur d'écoulement (7).
  8. Dispositif de refroidissement selon la revendication 7, caractérisé en ce que les éléments déflecteurs d'écoulement radiaux (9) s'étendent depuis le diamètre DN du moyeu jusqu'au diamètre extérieur DD du diffuseur (7).
  9. Dispositif de refroidissement selon la revendication 7, caractérisé en ce que les éléments déflecteurs d'écoulement radiaux (9) s'étendent depuis le diamètre DL du ventilateur jusqu'au diamètre extérieur DD du diffuseur (7).
  10. Dispositif de refroidissement selon la revendication 7, 8 ou 9, caractérisé en ce que les éléments déflecteurs d'écoulement radiaux (9, 9d, 9e) situés dans la zone extérieure du diffuseur (7), dans le sens radial, sont recourbés vers l'avant ou vers l'arrière, en étant renforcés dans la direction circonférentielle.
EP07013631.2A 2006-08-10 2007-07-12 Dispositif de refroidissement pour un véhicule automobile Not-in-force EP1887195B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200610037628 DE102006037628A1 (de) 2006-08-10 2006-08-10 Kühlvorrichtung für ein Kraftfahrzeug

Publications (3)

Publication Number Publication Date
EP1887195A2 EP1887195A2 (fr) 2008-02-13
EP1887195A3 EP1887195A3 (fr) 2012-04-18
EP1887195B1 true EP1887195B1 (fr) 2016-11-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP07013631.2A Not-in-force EP1887195B1 (fr) 2006-08-10 2007-07-12 Dispositif de refroidissement pour un véhicule automobile

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EP (1) EP1887195B1 (fr)
DE (1) DE102006037628A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006047236B4 (de) 2006-10-04 2017-06-29 Mahle International Gmbh Axiallüfter eingerichtet zur Förderung von Kühlluft einer Kühlvorrichtung eines Kraftfahrzeuges
DE102009012025A1 (de) 2009-03-10 2010-09-16 Behr Gmbh & Co. Kg Kühlvorrichtung für ein Kraftfahrzeug
DE102009015104A1 (de) 2009-03-31 2010-10-14 Behr Gmbh & Co. Kg Axiallüfter, insbesondere für ein Kraftfahrzeug
DE102015216335A1 (de) * 2015-08-26 2017-03-02 Mahle International Gmbh Lüfter für eine Kühleranordnung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2673248A1 (fr) * 1991-02-21 1992-08-28 Bosch Gmbh Robert Ventilateur axial, notamment pour vehicule automobile.
US6139265A (en) * 1996-05-01 2000-10-31 Valeo Thermique Moteur Stator fan

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DE833162C (de) * 1949-12-16 1952-03-03 Wilhelm Pfeiffer Kuehlergeblaese fuer Kraftfahrzeuge mit wassergekuehltem Motor
DE3304297A1 (de) * 1982-03-15 1984-03-15 Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart Axialgeblaese, insbesondere fuer kuehler einer wassergekuehlten brennkraftmaschine
DE3414609C1 (de) * 1984-04-18 1985-06-20 Daimler-Benz Ag, 7000 Stuttgart Vorrichtung zur Beeinflussung eines Kuehlluftstromes
DE4222264C2 (de) * 1992-07-07 1997-08-21 Temic Auto Electr Motors Gmbh Kühlvorrichtung für ein Kraftfahrzeug
JPH08254119A (ja) * 1995-03-17 1996-10-01 Mitsubishi Heavy Ind Ltd フローガイド付背板
JP3601807B2 (ja) * 1997-10-08 2004-12-15 本田技研工業株式会社 自動２輪車用ラジエタ冷却装置
FR2772844B1 (fr) * 1997-12-23 2000-03-03 Valeo Thermique Moteur Sa Dispositif de canalisation d'un flux d'air, notamment pour vehicule automobile
KR100548036B1 (ko) * 1998-12-31 2006-05-09 한라공조주식회사 축류팬용 안내깃과 그 안내깃을 구비한 축류팬 슈라우드 조립체
IT247917Y1 (it) * 1999-02-26 2002-09-16 Gate Spa Gruppo di ventilazione per uno scambiatore di calore, in particolareun radiatore di un autoveicolo.
US6827547B2 (en) * 2003-01-29 2004-12-07 Borgwarner Inc. Engine cooling fan having improved airflow characteristics
EP1600640A3 (fr) * 2004-04-26 2009-11-04 Behr GmbH & Co. KG Capot d'un ventilateur pour un échangeur de chaleur, en particulier pour des véhicules

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2673248A1 (fr) * 1991-02-21 1992-08-28 Bosch Gmbh Robert Ventilateur axial, notamment pour vehicule automobile.
US6139265A (en) * 1996-05-01 2000-10-31 Valeo Thermique Moteur Stator fan

Also Published As

Publication number Publication date
DE102006037628A1 (de) 2008-02-14
EP1887195A2 (fr) 2008-02-13
EP1887195A3 (fr) 2012-04-18

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