WO2015091010A1 - Ventilateur de moteur - Google Patents

Ventilateur de moteur Download PDF

Info

Publication number
WO2015091010A1
WO2015091010A1 PCT/EP2014/076640 EP2014076640W WO2015091010A1 WO 2015091010 A1 WO2015091010 A1 WO 2015091010A1 EP 2014076640 W EP2014076640 W EP 2014076640W WO 2015091010 A1 WO2015091010 A1 WO 2015091010A1
Authority
WO
WIPO (PCT)
Prior art keywords
module
fan
edge
peripheral wall
downstream
Prior art date
Application number
PCT/EP2014/076640
Other languages
English (en)
Inventor
Adrien Bossi
Bruno Coutty
Mélanie Piellard
Original Assignee
Delphi Automotive Systems Luxembourg Sa
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 Delphi Automotive Systems Luxembourg Sa filed Critical Delphi Automotive Systems Luxembourg Sa
Priority to US15/104,686 priority Critical patent/US20160312788A1/en
Publication of WO2015091010A1 publication Critical patent/WO2015091010A1/fr

Links

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
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • 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
    • F04D29/02—Selection of particular materials
    • F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
    • 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
    • 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
    • F04D29/40—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
    • F04D29/545—Ducts

Definitions

  • the present invention relates to a fan module for cooling a vehicle engine.
  • the invention relates to the structure of the shroud.
  • Engine fan modules are arranged in the front of a vehicle to generate an air stream that passes through heat exchangers cooling the engine's components.
  • a peripheral back stream flows in the opposite direction as the main stream and passes in the gap between the tip of the blades of the fan and the surface of the opening shroud. To reduce such back flow features have been developed in the structure of the shroud.
  • US7478993 discloses a downstream profile of the shroud supposed to provide a Coanda effect.
  • US5489186 discloses another downstream profile wherein flat surfaces, integral to the shroud, are arranged in the gap so that the structure is reinforced and, the back stream air flow is axially directed and cannot rotate within the gap.
  • Other fan modules are known from US2003161728, DE4414893 and WO9506822.
  • the module comprises a fixed shroud that receives in an opening a fan rotating about a main axis.
  • the opening may be circular.
  • the opening is circumvented by a peripheral wall extending in the downstream direction, relative to the main air flow, beyond the fan toward a corner edge where the wall reorients radially and inwardly to extend toward a circular downstream edge.
  • the reorientation of the peripheral wall may be done smoothly, for instance in a curve, or abruptly with an angle.
  • the downstream portion of the peripheral wall forms an annular channel opening in the upstream direction.
  • the channel forms a continuous space to the gap that is between the tips of the blades of the fan and the peripheral wall.
  • the gap is continuous, non-divided and non-partitioned.
  • the channel is also free of obstacles forming a continuous, non-divided and non-partitioned annular space.
  • the channel may be interrupted.
  • reinforcement ribs may be formed and confined in the channel.
  • the ribs do not form in the gap.
  • a 360°aperture is formed between downstream outer edge of the fan and the downstream edge of the peripheral wall so that the annular channel is downstream said 360°aperture and, in operation of the module a peripheral counter air stream is able to enter the gap and the channel through said 360° aperture.
  • the diameters of the downstream outer edge of the fan and of the downstream edge of the peripheral wall may be equal so that the circular edge faces the very tips of the blades.
  • the diameter of the circular edge is smaller than the outer diameter of the fan.
  • the diameter of the circular edge is larger than the outer diameter of the fan.
  • the peripheral wall extending from the corner edge to the circular edge may form a quadrant, or a quarter of circle.
  • the peripheral wall extending from the corner edge to the circular edge is frustoconical with apex upstream the fan.
  • the fan may be provided with an outer cylindrical ring joining the tips of the blades.
  • the gap is the space between said ring and the peripheral wall.
  • the portion of the ring that joins the tips of the blades may be cylindrical or may have another profile such as a conical or curved shape.
  • shroud is provided with at least one stator-arm radially extending and integrally connecting the peripheral wall between the corner edge and the circular edge externally of the annular channel.
  • the peripheral wall may be cylindrical or comprise a cylindrical portion, especially the portion facing the tips of the blades or, may have another profile such as a conical or curved shape.
  • Figure 1 is section of a fan module.
  • Figure 2 and 3 are detailed views in section of a fan and shroud presenting details of different embodiments of the present invention.
  • a fan module 10 comprises a fixed shroud 12 and a revolving fan 14, the fan and shroud being generally moulded in plastic.
  • the shroud 12 is of a general rectangular shape and has a large circular opening 16 delimited by a peripheral wall 18.
  • the fan 14 is received in the opening 16, driven in rotation about a main axis X by an electric motor M.
  • the fan 14 comprises blades 20 which tips 22 are close to the peripheral wall 18.
  • the tips 22 of the blades 20 are integrally connected by a circular ring 24 but, in alternative embodiments, this latter feature is not present.
  • an annular gap G is accommodated between the ring 24, or the very tip 22 of the blades 20, and the peripheral wall 18 of the opening 16.
  • the fan 14 In operation, the fan 14 generates a main air stream Fl flowing in the downstream direction DD, from upstream the fan 14, on the left of figure 1, to downstream the fan 14, on the right on figure 1 and, a counter air stream F2 flows inside the annular gap G in the opposite upstream direction UD.
  • the fan 14 is provided with a circular ring 24 joining the tips 22 of its blades 20.
  • the ring 24 has a central cylindrical section 26 covering the blades 20 and an upstream section 28 extending outwardly in a disc portion perpendicularly to the central section 26.
  • Other profiles are possible such as a cylindrical profile only.
  • the peripheral wall 18 of the opening 16 extends from an upstream edge 32, on the left of the figure, to a downstream edge 34, on the right of the figure. Between said edges 32, 34, the peripheral wall 18 extends in an upstream portion 36, comprising a series of faces forming steps so to follow the profile of the ring 24. Said upstream portion 36 continues in a central portion 38 that is cylindrical and that axially X extends downstream the fan 14 until a corner edge 40. Finally, after the corner edge 40, the peripheral wall 18 angles abruptly extending radially inwardly into a downstream portion 42 until the downstream edge 34.
  • the downstream portion 42 forms a quadrant 44 with radius R substantially equal to the width of the gap G, the centre of said quadrant 44 being located upstream the corner 34.
  • the circular portion formed by the quadrant 44 is followed by a short straight portion so that, the downstream edge 34 faces the downstream edge of the ring or of the blade, and forms into the gap G a 360°opening 48 of width W.
  • the downstream portion 42 defines a circular channel C open in the upstream direction UD.
  • the channel C is in continuity to the gap G, and is positioned downstream the 360°opening 48 while the main part of gap G is upstream the 360° opening 48.
  • the tips 22 of the blades 20 may be free without connecting ring.
  • the quadrant 44 may not follow an exact quarter of circle and, may not be followed by a short straight portion.
  • the shroud 12 comprises radially extending arms 50, usually identified as stators 50 and which are integrally formed joining the outer face of the quadrant 44. These arms are integral to the shroud and can be single-moulded in plastic material.
  • the gap G and the channel C extend all around the fan 14 in a continuous space non-divided or non- interrupted or non-partitioned by, for instance reinforcement ribs or other partitioning walls.
  • the channel is interrupted on an angular portion, this to enable packaging with other structural part.
  • the air passes through the fan 14 then a minor peripheral portion forms the counter air stream F2 that enters through the opening 48 into the gap G and channel C. Therein the stream F2 flows and revolves into the gap G and channel C prior to exiting upstream.
  • downstream portion 42 forms a frustoconical portion with apex on the main axis X upstream the fan 14.
  • the diameter of downstream edge 34 is smaller than the diameter of the ring 24 so the very tips 22 of the blades 20 face the inside of the gap G.
  • downstream edge 34 is larger than the diameter of the ring 24 so the downstream edge 34 faces the inside of the channel C.
  • reinforcement ribs 52 are integrally formed and confined inside the channel C, joining the downstream portion 42 to the central portion 38.
  • the portion of the gap G that is upstream the 360° opening 48 remains a continuous space non-divided or interrupted or non-partitioned by the ribs 52.

Landscapes

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

Abstract

L'invention porte sur un module de ventilateur (10) d'un véhicule à moteur, le carénage fixe (12) du module (10) recevant, dans une ouverture circulaire (16), un ventilateur (14) tournant autour d'un axe principal (X), ladite ouverture (16) étant contournée par une paroi périphérique (18) s'étendant de façon cylindrique dans la direction aval (DD) au-delà du ventilateur (14), vers un bord de coin où ladite paroi (18) est en angle radialement vers l'intérieur de façon à s'étendre vers un bord aval circulaire. La partie aval de la paroi périphérique (18) forme un canal annulaire (C) s'ouvrant dans la direction amont (UD), ledit canal (C) formant un espace continu vers l'espacement (G) qui se trouve entre les pointes (22) des pales (20) du ventilateur (14), ledit espacement (G) étant continu, non divisé et non séparé.
PCT/EP2014/076640 2013-12-17 2014-12-04 Ventilateur de moteur WO2015091010A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US15/104,686 US20160312788A1 (en) 2013-12-17 2014-12-04 Engine fan

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP13197697.9A EP2886872A1 (fr) 2013-12-17 2013-12-17 Ventilateur de moteur
EP13197697.9 2013-12-17

Publications (1)

Publication Number Publication Date
WO2015091010A1 true WO2015091010A1 (fr) 2015-06-25

Family

ID=49841530

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/076640 WO2015091010A1 (fr) 2013-12-17 2014-12-04 Ventilateur de moteur

Country Status (3)

Country Link
US (1) US20160312788A1 (fr)
EP (1) EP2886872A1 (fr)
WO (1) WO2015091010A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015155681A (ja) * 2014-02-21 2015-08-27 株式会社デンソー 送風装置
BR112018015376B1 (pt) * 2016-02-08 2022-12-20 Robert Bosch Gmbh Coifa de ventilador para um ventilador de fluxo axial e conjunto de ventilador axia
USD860427S1 (en) 2017-09-18 2019-09-17 Horton, Inc. Ring fan
US11028858B2 (en) * 2019-09-19 2021-06-08 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Integrated downstream funnel

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995006822A1 (fr) 1993-08-30 1995-03-09 Airflow Research Manufacturing Corporation Boitier de commande de reprise d'air destine aux soufflantes a ailettes pour debit axial
DE4414893A1 (de) 1994-04-28 1995-11-09 Geiger Plastic Verwaltung Kühlerabschottung für Kraftfahrzeuge
US5489186A (en) 1991-08-30 1996-02-06 Airflow Research And Manufacturing Corp. Housing with recirculation control for use with banded axial-flow fans
US20030161728A1 (en) 2002-02-27 2003-08-28 Halla Climate Control Corporation Fan and shroud assembly
US20060147304A1 (en) * 2003-07-01 2006-07-06 Kyungseok Cho Guide blade of axial-flow fan shroud
US7478993B2 (en) 2006-03-27 2009-01-20 Valeo, Inc. Cooling fan using Coanda effect to reduce recirculation

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2030993A (en) * 1934-08-27 1936-02-18 Internat Engineering Inc Fan
US4836148A (en) * 1988-06-13 1989-06-06 General Motors Corporation Shrouding for engine cooling fans
US5183382A (en) * 1991-09-03 1993-02-02 Caterpillar Inc. Low noise rotating fan and shroud assembly
US7874547B2 (en) * 2001-11-29 2011-01-25 Gordon Larry R Control for evaporative cooling apparatus with convex flare to produce helical air flow
KR100848569B1 (ko) * 2002-07-15 2008-07-25 한라공조주식회사 팬 쉬라우드
US7244110B2 (en) * 2003-09-30 2007-07-17 Valeo Electrical Systems, Inc. Fan hub assembly for effective motor cooling

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5489186A (en) 1991-08-30 1996-02-06 Airflow Research And Manufacturing Corp. Housing with recirculation control for use with banded axial-flow fans
WO1995006822A1 (fr) 1993-08-30 1995-03-09 Airflow Research Manufacturing Corporation Boitier de commande de reprise d'air destine aux soufflantes a ailettes pour debit axial
DE4414893A1 (de) 1994-04-28 1995-11-09 Geiger Plastic Verwaltung Kühlerabschottung für Kraftfahrzeuge
US20030161728A1 (en) 2002-02-27 2003-08-28 Halla Climate Control Corporation Fan and shroud assembly
US20060147304A1 (en) * 2003-07-01 2006-07-06 Kyungseok Cho Guide blade of axial-flow fan shroud
US7478993B2 (en) 2006-03-27 2009-01-20 Valeo, Inc. Cooling fan using Coanda effect to reduce recirculation

Also Published As

Publication number Publication date
EP2886872A1 (fr) 2015-06-24
US20160312788A1 (en) 2016-10-27

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