EP0992692B1 - Ventilateur avec canal de refroidissement pour le moteur - Google Patents

Ventilateur avec canal de refroidissement pour le moteur Download PDF

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Publication number
EP0992692B1
EP0992692B1 EP99119896A EP99119896A EP0992692B1 EP 0992692 B1 EP0992692 B1 EP 0992692B1 EP 99119896 A EP99119896 A EP 99119896A EP 99119896 A EP99119896 A EP 99119896A EP 0992692 B1 EP0992692 B1 EP 0992692B1
Authority
EP
European Patent Office
Prior art keywords
motorized fan
duct
motor
fan
rotor
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 - Lifetime
Application number
EP99119896A
Other languages
German (de)
English (en)
Other versions
EP0992692A1 (fr
Inventor
Daniele Dal Colle
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.)
Gate SRL
Original Assignee
Gate SRL
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 Gate SRL filed Critical Gate SRL
Publication of EP0992692A1 publication Critical patent/EP0992692A1/fr
Application granted granted Critical
Publication of EP0992692B1 publication Critical patent/EP0992692B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/082—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provision for cooling the motor
    • 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5806—Cooling the drive system

Definitions

  • the present invention relates to a duct for a motorized fan, for application in particular to a heat exchanger for an internal combustion engine e.g. US-A-5 180 279.
  • the invention relates to a duct comprising an essentially annular outer wall, defining internally an axial flow passage and which surrounds, in use, the rotor of the motorized fan; downstream of the motorized fan, the said wall is connected by means of a plurality of spokes to a central support structure to which the motor of the fan is fixed.
  • the object of the present invention is to provide a duct of the aforesaid type which enables the electric motor of the fan to be efficiently cooled.
  • a duct of the type described above characterised in that at least one blade is shaped so as to define a conduit with a radially outer inlet aperture, operable to capture a portion of the air stream generated by the fan in operation, and a radially inner outlet aperture, opening to the region occupied by the motor of the motorized fan.
  • the invention also relates to a cooling device which includes a motorized fan and a duct having the characteristics defined above.
  • a cooling device is generally indicated 1, for application in particular to a heat exchanger, such as a radiator, of an internal combustion engine.
  • the cooling device 1 includes a motorized fan, generally indicated 2, and an associated duct, indicated 3.
  • the motorized fan 2 includes, in a manner known per se, a rotor 4 with a hub 5 having a plurality of blades 6 extending from the periphery thereof.
  • a rotor 4 with a hub 5 having a plurality of blades 6 extending from the periphery thereof.
  • the radially outer ends of the blades 6 of the rotor 4 are connected to an outer ring indicated 7.
  • the hub 5 of the rotor 4 is hollow and the associated electric drive motor 8 lies at least partially within it.
  • the shaft 9 of the electric motor 8 is operatively connected to the hub 5 of the rotor.
  • the duct 3 comprises an essentially annular outer wall 10 which defines internally an axial flow passage 11 and surrounds the rotor 4 of the motorized fan.
  • the wall 10 of the duct Downstream of the motorized fan 2, the wall 10 of the duct is connected by means of a plurality of spokes 12 to a central support structure 13 to which the housing of the electric motor 8 is fixed in a manner known per se.
  • each spoke 12 of the duct 3 is shaped so as to define a conduit 14 having a radially outer inlet aperture 15, acting to capture a portion of the air stream generated by the operation of the motorized fan 2.
  • the stream of air captured through the aperture 15 flows through the conduit 14 in the direction of a radially inner outlet aperture 16 directed towards the region occupied by the motor 8 of the motorized fan.
  • a spoke or each of the spokes 12, has a substantially tubular structure.
  • this spoke could simply have a channel-shape structure.
  • a chamber 17 is formed in the vicinity of the central support structure 13, into which the conduit 14 formed in one or each spoke 12 of the duct opens.
  • the outlet or discharge aperture 16 is most conveniently formed essentially in the wall of this chamber facing the electric motor 8.
  • the cooling of the motor 8 of the motorized fan can be further improved by the provision of a plurality of blades 18 (Figure 1) which extend from the inner surface of the hub of the rotor, generating in operation a stream which washes over the outer surface of the motor 8.

Claims (5)

  1. Canal (3) pour un ventilateur motorisé (2), en particulier pour une application à un échangeur de chaleur pour un moteur à combustion interne ; le canal (3) comprenant une paroi extérieure essentiellement annulaire (10), qui définit intérieurement un passage d'écoulement axial (11) et qui entoure, en fonctionnement, le rotor (4) du ventilateur motorisé (2) ; en aval du ventilateur motorisé (2), ladite paroi (10) étant reliée au moyen d'une pluralité de bras (12) à une structure de support centrale (13) à laquelle le moteur (8) du ventilateur motorisé (2) est fixé ;
       le canal (3) étant caractérisé en ce qu'au moins un bras (12) a une forme telle qu'il définit un conduit (14) avec une ouverture d'entrée radialement extérieure (15), agissant pour capturer une partie du courant d'air généré en fonctionnement par le ventilateur motorisé (2), et une ouverture de sortie radialement intérieure (16), dirigée vers la région occupée par le moteur (8) du ventilateur motorisé (2).
  2. Canal selon la revendication 1, caractérisé en ce que ledit au moins un bras (12) présente une structure sensiblement tubulaire.
  3. Canal selon la revendication 1 ou la revendication 2, caractérisé en ce qu'une chambre (17) est formée dans le voisinage de la structure de support centrale (13), une ouverture de sortie (16) faisant face à la région occupée par le moteur (8) du ventilateur motorisé (2), et en ce que le conduit (14) formé dans ledit bras ou chacun desdits bras (12) s'ouvre dans ladite chambre (17).
  4. Dispositif de refroidissement (1), en particulier pour un échangeur de chaleur d'un moteur à combustion interne, qui comprend un ventilateur motorisé (2) et un canal (3) selon une ou plusieurs des revendications précédentes.
  5. Dispositif de refroidissement selon la revendication 4, dans lequel le rotor (4) du ventilateur motorisé (2) comporte un moyeu creux (5) accouplé de manière fonctionnelle à l'arbre (9) du moteur (8) du ventilateur motorisé (2) ;
       caractérisé en ce qu'une pluralité de pales (18) s'étendent à partir de la surface intérieure du moyeu (5) du rotor (4) agissant, en fonctionnement, pour générer un courant d'air qui balaye le moteur (8) du ventilateur motorisé (2).
EP99119896A 1998-10-08 1999-10-07 Ventilateur avec canal de refroidissement pour le moteur Expired - Lifetime EP0992692B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1998TO000850A IT1303112B1 (it) 1998-10-08 1998-10-08 Convogliatore per un motoventilatore e dispositivo di raffreddamentocomprendente tale convogliatore.
ITTO980850 1998-10-08

Publications (2)

Publication Number Publication Date
EP0992692A1 EP0992692A1 (fr) 2000-04-12
EP0992692B1 true EP0992692B1 (fr) 2004-11-17

Family

ID=11417094

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99119896A Expired - Lifetime EP0992692B1 (fr) 1998-10-08 1999-10-07 Ventilateur avec canal de refroidissement pour le moteur

Country Status (3)

Country Link
EP (1) EP0992692B1 (fr)
DE (1) DE69921930T2 (fr)
IT (1) IT1303112B1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2300799T3 (es) 2003-04-28 2008-06-16 Robert Bosch Llc Conjunto de ventilador de refrigeracion de motor de automovil.
ITBO20070380A1 (it) * 2007-05-30 2008-11-30 Spal Automotive Srl Unita' di ventilazione
EP2549116B1 (fr) * 2011-07-22 2013-10-16 ebm-papst Mulfingen GmbH & Co. KG Ventilateur axial avec canal d'écoulement supplémentaire
GB2495710A (en) * 2011-10-17 2013-04-24 Nidec Motors & Actuators Gmbh Germany Motor support arm for a cooling system fan
CN109441863B (zh) * 2018-12-26 2023-11-28 英飞同仁风机股份有限公司 一种屋顶离心风机及其电机腔散热的结构及方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1487766A (en) * 1919-11-13 1924-03-25 Ilg Electric Ventilating Compa Protective device for ventilating fans
US1466364A (en) * 1921-08-04 1923-08-28 Ilg Electric Ventilating Compa Self-cooled electric motor
GB2029125B (en) * 1978-08-18 1983-01-12 Smiths Industries Ltd Electric-motor driven fan arrangement for use in engine cooling systems
US5180279A (en) * 1992-03-31 1993-01-19 General Motors Corporation Heat shield and deflector for engine cooling fan motor

Also Published As

Publication number Publication date
DE69921930D1 (de) 2004-12-23
DE69921930T2 (de) 2005-03-31
EP0992692A1 (fr) 2000-04-12
ITTO980850A1 (it) 2000-04-08
IT1303112B1 (it) 2000-10-30

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