EP3830421B1 - Groupe de pompes - Google Patents

Groupe de pompes Download PDF

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Publication number
EP3830421B1
EP3830421B1 EP19735406.1A EP19735406A EP3830421B1 EP 3830421 B1 EP3830421 B1 EP 3830421B1 EP 19735406 A EP19735406 A EP 19735406A EP 3830421 B1 EP3830421 B1 EP 3830421B1
Authority
EP
European Patent Office
Prior art keywords
control
shaft
pump group
axis
rotating member
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
EP19735406.1A
Other languages
German (de)
English (en)
Other versions
EP3830421A1 (fr
Inventor
Giovanni Tebaldini
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.)
Industrie Saleri Italo SpA
Original Assignee
Industrie Saleri Italo SpA
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Publication date
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Publication of EP3830421A1 publication Critical patent/EP3830421A1/fr
Application granted granted Critical
Publication of EP3830421B1 publication Critical patent/EP3830421B1/fr
Active 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
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/021—Units comprising pumps and their driving means containing a coupling
    • F04D13/024—Units comprising pumps and their driving means containing a coupling a magnetic coupling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
    • 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
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F01P5/12—Pump-driving arrangements
    • F01P2005/125—Driving auxiliary pumps electrically

Definitions

  • the present invention concerns a pump group for an engine cooling system of a vehicle.
  • this cooling system is specific to cooling the engine, for example, but not necessarily, of the internal combustion type, of the vehicle.
  • the pump group object of the present invention is placed in this context, comprising a mechanical-type drive.
  • the pump group object of the present invention comprises a mechanical drive which controls the rotary movement of the impeller comprised therein, thus controlling the movement of the cooling liquid which flows into the cooling system to which the pump group may be fluidically connected.
  • the mechanical drive is a pulley, an electromagnetic pulley, a pulley containing a clutch group, for example a centrifugal clutch.
  • the mechanical drive is directly mounted on the shaft on which is mounted the impeller.
  • the object of the present invention is to provide a pump group for an engine cooling system of a vehicle, for example for an internal combustion engine, which addresses the aforesaid problems.
  • the object of the present invention must be contextualized to the sector of reference, i.e. the automotive sector, and thus provide a pump group with compact dimensions and simple production suitable to be housed in the vehicle, preferably near the engine comprised therein.
  • a pump group for an engine cooling system of a vehicle preferably for cooling the engine, for example an internal combustion engine
  • the pump group 1 is suitable for moving a predefined quantity of cooling liquid in the ducts of an engine cooling system of an engine.
  • said cooling liquid is a liquid solution based on water and glycol and/or oil.
  • the present invention is not limited to the nature of the type of cooling liquid.
  • the pump group 1, object of the present invention preferably extends in length with respect to an axis X-X.
  • the pump group 1, object of the present invention comprises an impeller 2 rotatable with respect to said axis X-X.
  • said impeller 2 has a center of rotation that lies on said axis X-X.
  • the impeller 2 is of the radial type, being specially shaped to perform a suction action on the cooling liquid, preferably in the axial direction, and to perform a thrust action, preferably in the radial direction.
  • the impeller 2 is specifically suited to move a quantity of cooling liquid in the engine cooling system.
  • the pump group 1 comprises a shaft 3 extending in length along the axis X-X.
  • the shaft 3 comprises an impeller end 32 on which the impeller 2 is integrally mounted and a control portion 31 suitable to receive a rotary control action from a mechanical drive 5 which is in turn comprised in the pump group 1 as described in detail below.
  • the pump group 1 comprises a pump body 4 supporting and housing the respective components of the pump group 1.
  • the pump group 1 is suitable to be fluidically connected to the respective ducts of the engine cooling system of a vehicle.
  • the pump body 4 is divided into a plurality of specific members/bodies:
  • control body 44 is integrally connected to the shaft body 43.
  • the pump group 1 comprises a mechanical drive 5 having the purpose of controlling the rotation of the shaft 3 by receiving an external action from an external group, for example the motor group, to which it is connected by means of a transmission group or a transmission element, such as a belt, a chain or a kinematic gear mechanism.
  • an external group for example the motor group
  • a transmission group or a transmission element such as a belt, a chain or a kinematic gear mechanism.
  • said mechanical drive 5 is suitable to engage the shaft 3 being mounted on said control body 44.
  • the mechanical drive 5 in effect comprises:
  • the rotating member 51 has a substantially axial-symmetrical shape with respect to the axis X-X.
  • the rotating member 51 has a substantially annular shape.
  • the rotating member 51 comprises at a first axial end an operating cavity 510 in which the rotating drum 52 and partially the control device 53 are housed.
  • the rotating member 51 comprises, at a second axial end, a body housing cavity 511, in which the control body 44 is at least partially housed.
  • the entire control body 44 is housed in the body housing cavity 51.
  • the rotating member 51 comprises a cap 518 suitable to close the operating cavity 510 preventing access thereto from the outside, for example protecting it from the elements.
  • the rotating member 51 comprises an outer perimeter wall 515 that extends parallel to the axis X-X; this wall is thus located in a distal position from said axis X-X.
  • the perimeter wall 515 is suitable to be engaged by an external group to receive the external rotational action; preferably on said perimeter wall 515 a drive belt may thus be wound.
  • the rotating member 51 further comprises an inner wall 513 which extends parallel to the axis X-X suitable to engage the control body 44 by means of a bearing group 512 (preferably in turn comprised in the mechanical drive 5); thus, preferably, the inner wall 513 is in a position proximal to said axis X-X.
  • the rotating member 51 comprises a radial wall 514 that extends radially to said axis X-X to join integrally the inner wall 513 with the outer perimeter wall 515.
  • the radial wall 514 axially separates the operating cavity 510 and the body housing cavity 511.
  • the operating cavity 510 and the body housing cavity 511 are radially defined by the inner wall 513 and by the outer perimeter wall 515.
  • the rotating drum 52 is integrally mounted on the shaft 3, on the control end 31 of the shaft 3, which protrudes from the control body 44.
  • the rotating drum 52 has a substantially radial extension with respect to the shaft 3.
  • control device 53 performs an action in the axial direction which allows the configuration change between the engagement configuration and the disengagement configuration and vice versa.
  • control device 53 comprises first control members 531 housed in the control body 44 and second control devices 532 housed on the control drum 52.
  • Said first control members 531 and said second control members 532 are magnetically sensitive to each other.
  • the first control members 531 are of the type comprising sensors or coils of electrical or electronic type adapted to produce a magnetic field
  • the second members 532 are of the type comprising magnetically sensitive elements suitable to undergo the action of said magnetic field produced by the first control members 531.
  • the second control members 532 comprise a disk element 532' fitted axially movable on the driving shaft 3.
  • the second control members 532 comprise moving elements 532", housed on the drum element 52, which are magnetically sensitive.
  • the moving elements 532" engage the disk element 532' in such a way as to control its axial position between an engagement position in which the rotating member 51 that drives it in rotation transmits via the moving elements 532" the rotary motion to the drum 52 (corresponding to the engagement configuration), and a disengagement position in which it is axially separated from the rotating member 51, which then rotates in solitary mode (corresponding to the disengagement configuration).
  • said moving elements 532" comprise elastically resilient members adapted to perform normally an action on the disk element 532' in such a way as to keep it in the disengagement position, and adapted to perform an action on the disk element 532' which brings it into an engagement position only on command of the magnetic action produced by the first control members 531.
  • the moving elements 532" are elastic wing elements.
  • the disk element 532' in the engagement position which corresponds to the engagement configuration, performs a friction action on the rotating member 51.
  • the action of mutual engagement between the disk element 532' and the rotating member 51 is due to the friction between the two components.
  • the disk element 532' has portions with friction material specifically designed for this purpose.
  • the mechanical drive 5 is suitable to be axially fitted on the control body 44 being specially shaped to accommodate and operate also with the control portion 31 of the shaft 3.
  • control body 44 has a substantially asymmetrical shape comprising a central tubular portion 441 having axial extension, wherein within the central tubular portion 441 is obtained the control opening 440.
  • control opening 440 is substantially complementary in dimension to the shaft 3.
  • the shaft 3 is maintained in the axis X-X by the walls that define said control opening 440.
  • the rotating member 51 is mounted outside the central tubular portion 441; in particular, the bearing unit 512 is housed on the central tubular portion 441.
  • control body 44 further comprises a support portion 443 distal from the axis X-X, suitable for engaging the shaft body 43.
  • the support portion 443 has a dimension substantially complementary to the body housing cavity 511.
  • control body 44 further comprises a radial portion 442 extending substantially radially to said axis X-X to join integrally the central tubular portion 441 and the support portion 443.
  • control body 44 is a single piece.
  • control body 44 is made as a single element out of steel alloy.
  • control body 44 has an increasing cross-section starting from the proximal portions to the axis X-X, i.e. from the central tubular portion 441, to the distal portions from the axis X-X, i.e. the support portion 443.
  • the central tubular portion 441, the radial portion 442 and the support portion 443 are connected to each other with curved profiles.
  • the central tubular portion 441, the radial portion 442 and the support portion 443 do not have sharp edges.
  • the first control members 531 are housed in said support portion 443.
  • the electric control drive engages in turn the shaft 3 to guide it in rotation, preferably in a configuration wherein it is not driven in rotation by the mechanical drive 5 (preferably controlled in the disengagement configuration).
  • said electric control drive comprises an electric control motor and is positioned between the impeller 2 and the mechanical drive 5.
  • the pump body 4 comprises an electric drive body that houses said electric motor, positioned between the shaft body and the control body or between the impeller body and the shaft body.
  • the pump group that is object of the present invention clearly satisfies the purpose of the present invention.
  • the pump group that is the object of the present invention comprises a mechanical drive and a pump body, respectively, specially shaped to prevent all the forces and inertia of the mechanical drive from being discharged on the shaft.
  • the shaft may be sized according to the actions it must undergo.
  • the shaft has dimensions, and in particular diameter, smaller than the shafts of the known pump groups.
  • the pump group has a simple and compact shape and dimensions.
  • the pump body and mechanical drive are specially shaped in such a way that the mechanical drive is kept aligned along the axis.
  • the pump body has a high structural strength.
  • control body is suitable to make full use of the space inside the rotating member, i.e. inside the mechanical drive.
  • the mechanical drive has a simple, precise and reliable operation when switching between the engagement configuration and the disengagement configuration.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Saccharide Compounds (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Claims (12)

  1. Groupe de pompes (1), pour un système de refroidissement de moteur d'un véhicule, comprenant :
    - une roue (2) pouvant tourner par rapport à un axe (X-X) appropriée pour déplacer une quantité de liquide de refroidissement dans le système de refroidissement de moteur ;
    - un arbre (3) s'étendant en longueur le long de l'axe (X-X) comprenant une extrémité de roue (32) sur laquelle la roue (2) est montée et une extrémité de commande (31) adaptée pour recevoir une action de commande de rotation ;
    - un corps de pompe (4) qui comprend :
    i) un corps de roue (42) qui accueille la roue (2) dans une chambre de roue (420) ;
    ii) un corps d'arbre (43) qui accueille en partie et supporte l'arbre (3) en rotation libre ;
    iii) un corps de commande (44) relié d'un seul bloc au corps d'arbre (43) comprenant une ouverture de commande (440) à travers laquelle l'arbre (3) s'étend de manière à ce que l'extrémité de commande (31) fasse saillie axialement depuis ledit corps de commande (44) ; dans lequel le corps de commande (44) a une forme sensiblement axisymétrique et comprend :
    - une partie tubulaire centrale (441) ayant une extension axiale, dans lequel à l'intérieur de la partie tubulaire centrale (441) l'ouverture de commande (440) est obtenue, avec une dimension sensiblement complémentaire de l'arbre (3), de telle sorte que l'arbre (3) soit maintenu dans un axe (X-X) par les parois définissant ladite ouverture de commande (440) ;
    - une partie de support (443) positionnée dans une position distale quant à l'axe (X-X) adaptée pour mettre en prise le corps d'arbre (43) ;
    - une partie radiale (442) s'étendant sensiblement radialement jusqu'audit axe (X-X) pour joindre d'un seul bloc la partie tubulaire centrale (441) et la partie de support (443) ;
    - un entraînement mécanique (5) qui commande la rotation de l'arbre (3) comprenant :
    l) un organe rotatif (51) monté sur le corps de commande (44) à l'extérieur de la partie tubulaire centrale (441), en rotation libre par rapport à l'axe (X-X), dans lequel l'organe rotatif (51) est approprié pour recevoir une action de rotation externe depuis un groupe externe compris dans le véhicule, par exemple depuis un élément de transmission ;
    m) un tambour (52) rotatif relié d'un seul bloc à l'extrémité de commande (31) de l'arbre (3) ;
    n) un dispositif de commande (53) pouvant être configuré dans une configuration de mise en prise dans laquelle l'organe rotatif (51) et le tambour (52) rotatif sont mutuellement en prise pour tourner ensemble et une configuration de désolidarisation dans laquelle l'organe rotatif (51) est séparé du tambour (52) rotatif et tourne individuellement.
  2. Groupe de pompes (1) selon la revendication 1, dans lequel l'organe rotatif (51) a une forme sensiblement axisymétrique relativement à l'axe (X-X) et comprend, à une première extrémité axiale, une cavité de fonctionnement (510) dans laquelle le tambour (52) rotatif et, en partie, le dispositif de commande (53) sont accueillis et, à une deuxième extrémité axiale, une cavité d'accueil de corps (511) dans laquelle le corps de commande (44) est au moins en partie accueilli.
  3. Groupe de pompes (1) selon la revendication 2, dans lequel l'organe rotatif (51) comprend un bouchon (518) adapté pour fermer la cavité de fonctionnement (510) empêchant un accès depuis l'extérieur.
  4. Groupe de pompes (1) selon l'une quelconque des revendications précédentes, dans lequel l'organe rotatif (51) comprend :
    - une paroi de périmètre (515) extérieure, positionnée dans une position distale quant à l'axe (X-X), s'étendant parallèlement à l'axe (X-X), dans lequel ladite paroi de périmètre (515) est appropriée pour être mise en prise par une unité extérieure pour recevoir une action de rotation externe ;
    - une paroi intérieure (513), positionnée dans une position proximale quant à l'axe (X-X), s'étendant parallèlement à l'axe (X-X), dans lequel ladite paroi intérieure (513) met en prise le corps de commande (44) au moyen d'un groupe de paliers (512) ;
    - une paroi radiale (514) s'étendant sensiblement radialement jusqu'audit axe (X-X) pour joindre d'un seul bloc la paroi intérieure (513) à la paroi de périmètre (515) extérieure.
  5. Groupe de pompes (1) selon l'une quelconque des revendications précédentes, dans lequel ladite partie de support (443) a une dimension sensiblement complémentaire de la cavité d'accueil de corps (511).
  6. Groupe de pompes (1) selon l'une quelconque des revendications précédentes, dans lequel le dispositif de commande (53) réalise une action dans la direction axiale qui permet le changement de configuration entre la configuration de mise en prise et la configuration de désolidarisation et vice versa.
  7. Groupe de pompes (1) selon l'une quelconque des revendications précédentes, dans lequel le dispositif de commande (53) comprend des premiers organes de commande (531) accueillis dans le corps de commande (44) et des deuxièmes organes de commande (532) accueillis sur le tambour (52) de commande dans lequel les premiers organes de commande (531) et les deuxièmes organes de commande (532) sont magnétiquement sensibles les uns aux autres.
  8. Groupe de pompes (1) selon la revendication 7, dans lequel les premiers organes de commande (531) sont du type comprenant des capteurs électroniques appropriés pour produire un champ magnétique, tandis que les deuxièmes organes (532) sont du type comprenant des éléments magnétiquement sensibles appropriés pour subir l'action dudit champ magnétique produit par les premiers organes de commande (531).
  9. Groupe de pompes (1) selon la revendication 8, dans lequel lesdits deuxièmes organes de commande (532) comprennent un élément disque (532') placé axialement mobile sur l'arbre (3) d'entraînement et des éléments mobiles (532") accueillis sur l'élément tambour (52), magnétiquement sensibles, mettant en prise ledit élément disque (532') de manière à commander sa position axiale entre une position de mise en prise, dans laquelle l'organe rotatif (51) l'entraîne en rotation transmettant via les éléments mobiles (532") le mouvement de rotation au tambour (52), et une position de désolidarisation dans laquelle il est axialement séparé de l'organe rotatif (51).
  10. Groupe de pompes (1) selon la revendication 9, dans lequel lesdits éléments mobiles (532") comprennent des organes élastiquement flexibles adaptés pour réaliser normalement une action sur l'élément disque (532') de manière à le maintenir dans une position de désolidarisation, et adaptés pour accomplir une action sur l'élément disque (532') qui l'amène dans une position de mise en prise seulement sur commande de l'action magnétique produite par les premiers organes de commande (531).
  11. Groupe de pompes (1) selon l'une quelconque des revendications 9 ou 10, dans lequel l'élément disque (532') dans la position de mise en prise, qui correspond à la configuration de mise en prise, réalise une action de frottement sur l'organe rotatif (51).
  12. Groupe de pompes (1) selon l'une quelconque des revendications précédentes, comprenant en outre un entraînement à commande électrique, adapté pour mettre en prise l'arbre (3) pour le guider en rotation, dans lequel ledit entraînement à commande électrique comprend un moteur à commande électrique et est positionné entre la roue (2) et l'entraînement mécanique (5), dans lequel le corps de pompe (4) comprend un corps d'entraînement électrique accueillant ledit moteur électrique, positionné entre le corps d'arbre et le corps de commande ou entre le corps de roue et le corps d'arbre.
EP19735406.1A 2018-08-03 2019-06-13 Groupe de pompes Active EP3830421B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102018000007845A IT201800007845A1 (it) 2018-08-03 2018-08-03 Gruppo pompa
PCT/IB2019/054945 WO2020026044A1 (fr) 2018-08-03 2019-06-13 Groupe de pompes

Publications (2)

Publication Number Publication Date
EP3830421A1 EP3830421A1 (fr) 2021-06-09
EP3830421B1 true EP3830421B1 (fr) 2023-05-03

Family

ID=63965911

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19735406.1A Active EP3830421B1 (fr) 2018-08-03 2019-06-13 Groupe de pompes

Country Status (6)

Country Link
US (1) US20210199116A1 (fr)
EP (1) EP3830421B1 (fr)
CN (1) CN112543846B (fr)
IT (1) IT201800007845A1 (fr)
MX (1) MX2021001132A (fr)
WO (1) WO2020026044A1 (fr)

Family Cites Families (15)

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Publication number Priority date Publication date Assignee Title
JP2001342832A (ja) * 2000-05-30 2001-12-14 Honda Motor Co Ltd エンジンのウオータポンプ駆動構造
DE102004009073A1 (de) * 2004-02-23 2005-09-15 Behr Gmbh & Co. Kg Regelbarer Antrieb für ein Kraftfahrzeug
ITMI20040584U1 (it) * 2004-10-26 2005-01-26 Baruffaldi Spa Dispositivo di trasmissione del moto di rotazione ad un albero condotto particolarmente per pompe di ricircolo di fluidi
DE102005025865A1 (de) * 2005-06-06 2006-12-07 Gebr. Becker Gmbh & Co Kg Radialgebläse
DE102005052559A1 (de) * 2005-11-02 2007-05-10 Behr Gmbh & Co. Kg Regelbarer Antrieb für ein Kraftfahrzeug, insbesondere für eine Kühlmittelpumpe
DE102009029069A1 (de) * 2009-09-01 2011-03-03 Robert Bosch Gmbh Zweistufige Kreiselpumpe
US20150037177A1 (en) * 2011-02-06 2015-02-05 Borgwarner Inc. Hybrid electromechanical coolant pump with base flow and peak flow
ITBS20120031U1 (it) * 2012-09-27 2014-03-28 Ind Saleri Italo Spa Gruppo pompa con involucro di supporto albero-manicotto
CN104728302A (zh) * 2013-12-19 2015-06-24 博格华纳公司 带有摩擦离合器和电动马达的附件驱动器
BR112016025520B1 (pt) * 2014-04-30 2022-11-08 Fpt Industrial S.P.A Conjunto de bomba para recircular um fluido de arrefecimento de um motor térmico
US20160017894A1 (en) * 2014-07-15 2016-01-21 Borgwarner Inc. Coolant pump with heat sinking to coolant
CN106341007B (zh) * 2015-07-06 2019-08-23 浙江三花汽车零部件有限公司 电驱动泵的制造方法
CN111306071B (zh) * 2015-07-24 2021-06-15 浙江三花汽车零部件有限公司 转子组件以及电子泵
JP6576773B2 (ja) * 2015-09-30 2019-09-18 日本電産サンキョー株式会社 ポンプ装置
CN206054322U (zh) * 2016-08-31 2017-03-29 长沙多浦乐泵业科技有限公司 一种新型防水结构的微型泵

Also Published As

Publication number Publication date
US20210199116A1 (en) 2021-07-01
CN112543846A (zh) 2021-03-23
IT201800007845A1 (it) 2020-02-03
MX2021001132A (es) 2021-04-12
CN112543846B (zh) 2023-02-03
WO2020026044A1 (fr) 2020-02-06
EP3830421A1 (fr) 2021-06-09

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