EP2386764B1 - Ventilatoranordnung für Fahrzeugen - Google Patents

Ventilatoranordnung für Fahrzeugen Download PDF

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Publication number
EP2386764B1
EP2386764B1 EP11165462.0A EP11165462A EP2386764B1 EP 2386764 B1 EP2386764 B1 EP 2386764B1 EP 11165462 A EP11165462 A EP 11165462A EP 2386764 B1 EP2386764 B1 EP 2386764B1
Authority
EP
European Patent Office
Prior art keywords
fan
axis
rotation
toothed ring
fan assembly
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.)
Active
Application number
EP11165462.0A
Other languages
English (en)
French (fr)
Other versions
EP2386764A2 (de
EP2386764A3 (de
Inventor
Paolo Durello
Francesco Mercogliano
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.)
Denso Thermal Systems SpA
Original Assignee
Denso Thermal Systems SpA
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 Denso Thermal Systems SpA filed Critical Denso Thermal Systems SpA
Publication of EP2386764A2 publication Critical patent/EP2386764A2/de
Publication of EP2386764A3 publication Critical patent/EP2386764A3/de
Application granted granted Critical
Publication of EP2386764B1 publication Critical patent/EP2386764B1/de
Active 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
    • F04D29/08—Sealings
    • F04D29/16—Sealings between pressure and suction sides
    • F04D29/161—Sealings between pressure and suction sides especially adapted for elastic fluid pumps
    • F04D29/164—Sealings between pressure and suction sides especially adapted for elastic fluid pumps of an axial flow wheel
    • 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
    • F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
    • F04D29/526—Details of the casing section radially opposing blade tips
    • 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

Definitions

  • the present invention relates to a fan assembly for cooling a radiator, a radiator-condenser assembly, or a radiator-condenser-intercooler assembly of a vehicle.
  • a fan assembly for cooling a radiator or a radiator-condenser assembly of a vehicle comprises a casing, having a through opening, and a motor-fan assembly, carried by the casing and designed to generate a flow of air through said opening.
  • the fan is generally of an axial type and comprises a hub, rotatable about an axis of rotation parallel to the direction of the flow, and a plurality of blades, which extend radially from said hub.
  • the documents Nos. US6863496 and US7481615 describe fan assemblies for vehicles in which the casing comprises a toothed ring that surrounds the fan. Said toothed ring has the purpose of reducing the vortices that are generated in the gap between the outer end of the fan and the casing. These documents describe solutions in which the toothed ring that surrounds the fan is provided with projections with sawtooth or undulated profile, which project towards the fan in a plane orthogonal to the axis of rotation of the fan.
  • the document US 2004/156712 A1 describes a fan-shroud structure, the shroud including a labyrinth seal having a corrugated profile.
  • the object of the present invention is to provide an improved geometry of the toothed ring surrounding the fan that, as compared to solutions of a known type, will reduce the tonal component of the noise generated by the fan without altering the efficiency of the system in terms of air-delivery capacity and head.
  • the fan assembly 10 is a fan assembly designed to perform cooling of a radiator, of a radiator-condenser assembly, or of a radiator-condenser-intercooler assembly of a vehicle.
  • the fan assembly 10 comprises a casing 12 preferably made of injection-moulded plastic material having a shape designed to convey a flow of air through a radiator, a radiator-condenser assembly, or a radiator-condenser-intercooler assembly.
  • the casing 12 has a through opening 14 and a support 16 located at the centre of the opening 14.
  • the support 16 is connected to the edges of the opening 14 by means of radial arms 18.
  • the support 16 carries a motor-fan assembly designated by 20 in Figure 1 .
  • the motor-fan assembly 20 comprises an axial fan 22 made of injection-moulded plastic material.
  • the fan 22 comprises a hub 24, extending from which is a plurality of blades 26.
  • the fan 22 is rotatable with respect to the support 16 about an axis of rotation designated by X in Figure 4 .
  • the fan 22 can be provided with an external ring 28 fixed with respect to the outer end of the blades 26.
  • the external ring 28, if present, is constituted by a cylindrical wall 30 sharing the axis of rotation X and a radial wall 32 contained in a plane orthogonal with respect to the axis of rotation X.
  • the casing 12 comprises a toothed ring 34 fixed or else formed integrally with the casing and located along the edge of the opening 14.
  • the toothed ring 34 surrounds the fan 22 and is provided with a plurality of teeth 36 that follow one another with a constant pitch in a circumferential direction.
  • the teeth 36 can extend in a uniform way along a circumference or else can extend on arcs of circumference that are set at angular distances apart.
  • the toothed ring 34 has a front surface 38 that is cylindrical or shaped like a truncated cone, shares the axis of rotation X, and defines the walls of the teeth 36 facing the fan.
  • the wall 38 is set at a constant or variable distance in the direction of the axis X from the outer end of the fan 22 or, if present, from the cylindrical wall 30 of the external ring 28.
  • the toothed ring 34 moreover has a side wall 40 that forms the sides of the teeth 36.
  • the distance in a direction parallel to the axis of rotation X between the side wall 40 and a plane orthogonal to the axis of rotation X varies in a periodic way in the circumferential direction.
  • the teeth 36 project in a direction parallel to the axis of rotation X with respect to a radial plane passing through the base of said teeth.
  • the teeth 36 can have an undulated profile as illustrated in the figures or else can have a sawtooth shape or a shape of some other type.
  • the length L of an arc of a circle with centre on the axis of rotation X of the fan 22 and passing through each tooth 36 remains constant for each radius comprised between the radii R1 and R2, where R1 and R2 are the internal radius and the external radius of the circumferential surfaces of the teeth 36.
  • the axial arrangement of the teeth 36 enables provision of a periodic sequence of cavities.
  • the purpose of the toothed ring 34 is to provide a circumferential coupling to the fan of a sequence of volumes designed to dissipate the radial component of the fluctuations of lift generated by the blades.

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)

Claims (3)

  1. Lüfteranordnung zum Kühlen eines Radiators, einer Radiator-Kondensator-Anordnung oder einer Radiator-Kondensator-Ladeluftkühler-Anordnung eines Fahrzeugs, umfassend:
    - ein Gehäuse (12) mit einer Durchgangsöffnung (14) und einem Träger (16), der sich in der Mitte der Öffnung (14) befindet,
    - eine Motorlüfteranordnung (20), die von dem Träger (16) getragen wird und einen Axiallüfter (22) enthält, der in Bezug auf den Träger (16) um eine Drehachse (X) drehbar ist, und
    - einen Zahnring (34), der in Bezug auf das Gehäuse (12) befestigt ist und den Lüfter (22) umgibt, wobei der Zahnring (34) eine Mehrzahl von Zähnen (36) aufweist, die in Umfangsrichtung aufeinander folgen,
    wobei der Zahnring (34) eine vordere Fläche (38), die zylindrisch oder kegelstumpfförmig ist, wobei sie die Drehachse (X) teilt und in einem konstanten oder variablen Abstand in Richtung der Drehachse (X) in Bezug auf ein radial äußeres Ende des Lüfters (22) festgelegt bzw. angeordnet ist, und eine Seitenwand (40) aufweist, die Seiten der Zähne (36) bildet, wobei der Abstand in einer Richtung parallel zu der Drehachse (X) zwischen der Seitenwand (40) und einer zur Drehachse (X) orthogonalen Ebene periodisch in Umfangsrichtung variiert,
    wobei die Lüfteranordnung dadurch gekennzeichnet ist, dass eine Breite (L) eines Kreisbogens, der auf der Drehachse (X) des Lüfters (22) zentriert ist und durch jeden Zahn (36) verläuft, für jeden Radius zwischen den Radien (R1, R2) der Innen- und Außenumfangsflächen der Zähne (36) konstant bleibt.
  2. Lüfteranordnung nach Anspruch 1, dadurch gekennzeichnet, dass die Seitenwand (40) ein gewelltes Profil oder ein Sägezahnprofil aufweist.
  3. Lüfteranordnung nach Anspruch 1, dadurch gekennzeichnet, dass der Lüfter (22) einen Außenumfangskragen (28) mit einer zylindrischen Wand (30), die die Drehachse (X) teilt, und eine radiale Wand (32) aufweist, die in einer Ebene orthogonal zu der Drehachse (X) enthalten ist, und dadurch, dass ein Abstand in radialer Richtung zwischen der zylindrischen Wand (30) des Außenumfangskragens (28) und der vorderen Wand (38) des Zahnrings (34) konstant ist und ein Abstand in einer Richtung parallel zu der Drehachse (X) zwischen der radialen Wand (32) des Außenumfangskragens (28) und der Seitenwand (40) des Zahnrings (34) periodisch in Umfangsrichtung variiert.
EP11165462.0A 2010-05-11 2011-05-10 Ventilatoranordnung für Fahrzeugen Active EP2386764B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTO2010A000393A IT1399992B1 (it) 2010-05-11 2010-05-11 Gruppo ventilatore per veicoli

Publications (3)

Publication Number Publication Date
EP2386764A2 EP2386764A2 (de) 2011-11-16
EP2386764A3 EP2386764A3 (de) 2017-11-15
EP2386764B1 true EP2386764B1 (de) 2019-12-04

Family

ID=43301980

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11165462.0A Active EP2386764B1 (de) 2010-05-11 2011-05-10 Ventilatoranordnung für Fahrzeugen

Country Status (2)

Country Link
EP (1) EP2386764B1 (de)
IT (1) IT1399992B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012207552A1 (de) * 2011-05-13 2012-11-15 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Kühlerlüftermodul
DE102019202116A1 (de) * 2019-02-18 2020-08-20 Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Würzburg Kühlerlüfter eines Kraftfahrzeugs

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100729650B1 (ko) 2002-02-27 2007-06-18 한라공조주식회사 소음저감구조를 가지는 쉬라우드
US6874990B2 (en) * 2003-01-29 2005-04-05 Siemens Vdo Automotive Inc. Integral tip seal in a fan-shroud structure
EP1515000B1 (de) * 2003-09-09 2016-03-09 Alstom Technology Ltd Beschaufelung einer Turbomaschine mit konturierten Deckbändern
KR101155809B1 (ko) 2005-03-26 2012-06-12 한라공조주식회사 팬 및 쉬라우드 조립체

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
ITTO20100393A1 (it) 2011-11-12
EP2386764A2 (de) 2011-11-16
EP2386764A3 (de) 2017-11-15
IT1399992B1 (it) 2013-05-09

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