EP3894707B1 - Groupe de pompes comprenant deux modules de commande - Google Patents

Groupe de pompes comprenant deux modules de commande Download PDF

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Publication number
EP3894707B1
EP3894707B1 EP19813135.1A EP19813135A EP3894707B1 EP 3894707 B1 EP3894707 B1 EP 3894707B1 EP 19813135 A EP19813135 A EP 19813135A EP 3894707 B1 EP3894707 B1 EP 3894707B1
Authority
EP
European Patent Office
Prior art keywords
pump group
stator
command
impeller
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.)
Active
Application number
EP19813135.1A
Other languages
German (de)
English (en)
Other versions
EP3894707A1 (fr
Inventor
Alfonso SURACE
Marco Pedersoli
Simone CORNACCHIA
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
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Industrie Saleri Italo SpA
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Publication of EP3894707A1 publication Critical patent/EP3894707A1/fr
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Publication of EP3894707B1 publication Critical patent/EP3894707B1/fr
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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
    • F04D13/12—Combinations of two or more pumps
    • F04D13/14—Combinations of two or more pumps the pumps being all of centrifugal type
    • 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
    • F04D13/0666—Units comprising pumps and their driving means the pump being electrically driven the motor being of the plane gap type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0072—Installation or systems with two or more pumps, wherein the flow path through the stages can be changed, e.g. series-parallel
    • 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
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps

Definitions

  • the present invention relates to a pump group for a vehicle cooling system. Preferably, reference is made to the cooling circuit of the vehicle's engine group.
  • the present invention also relates to a cooling system of a vehicle which comprises said pump group.
  • the pump group according to the present invention is suitable for controlling at least a predetermined quantity of cooling liquid in said system.
  • the present invention is not limited to the type of engine group subject to cooling.
  • the present invention finds a particular operative context in the cooling of electric motor engines, comprising at least one battery group.
  • cooling pump group solutions aimed to regulate the cooling modes of the engine group and/or other vehicle components have already been known for some time.
  • the object of the present invention is to provide a pump group which is adapted to manage the cooling liquid in an extremely versatile manner, while avoiding the aforementioned problems.
  • a pump group of a cooling system of a vehicle in particular of an engine group of a vehicle, has been characterized as a whole.
  • the engine group is of the internal combustion type or of the electric or hybrid type.
  • the pump group 1 extends with respect to a main axis X-X.
  • the pump group 1 comprises an axial flow stator 2 which produces an electromagnetic action in a direction parallel to the main axis X-X.
  • the pump group 1 comprises two command modules 3 positioned at the two opposite axial ends of the stator 2; both command modules 3 are suitable for controlling a predefined quantity of cooling liquid.
  • each command module 3 defines a rotating chamber 300 in which the cooling liquid flows.
  • each command module 3 comprises an impeller 4 and an impeller shaft 5 to which said impeller is integrally connected.
  • the impeller 4 is of the radial type: it receives cooling liquid in a direction parallel to the main axis X-X to perform a thrust action thereon in the radial direction with respect to the main axis X-X.
  • the impeller shaft 5 extends along the main axis X-X and comprises an impeller end 51 on which the impeller 4 is integrally connected and a control portion 52 adapted to receive a rotational control action.
  • each command module 3 also comprises a rotor 6 integrally connected to said control portion 52 controllable in rotation by the action of the stator 2.
  • the stator 2 controls the rotors 6 of the two command modules 3 in rotation and therefore controls the two impellers 4 in rotation.
  • the stator 2 comprises a series of stator poles.
  • first stator poles adapted to produce an electromagnetic action in a first axial direction for controlling the rotor 6 of the first command module 3
  • second stator poles adapted to produce an electromagnetic action in a second axial direction for controlling the second rotor 6 of the second command module 3.
  • the pump group 1 comprises an electronic control unit 7 operatively connected to the stator 2 for controlling the actuation thereof.
  • said electronic control unit 7 is adapted to manage the actuation of the stator poles controlling the actuation of each impeller 4.
  • the stator 2 is connected to the electronic control unit 7 by means of a connector 27.
  • stator 2 comprising six stator poles
  • three stator poles are dedicated to rotate the first rotor while other three poles are dedicated to drive the second rotor in rotation.
  • the rotor 6 comprises a discoidal element 61 of substantially planar annular shape in which the angularly equidistant rotor poles are housed.
  • the rotor 6 comprises a central element 62 integrally connected to the control portion 52 of the impeller shaft 5.
  • the discoidal element 61 extends radially from said central portion 62.
  • the pump group 1 comprises a pump body 8 in which the stator 2 is housed.
  • the pump body 8 is the component that performs a structural support function.
  • the pump body 8 comprises a stator chamber 82 specially shaped to house the stator 2.
  • the stator is geometrically suitable for housing in said stator chamber 82 engaging the delimiting walls thereof.
  • the two command modules 3 are mounted on the pump body 8 on two opposite axial sides.
  • the pump body 8 comprises a support foot 87 suitable for supporting the pump body 8 in a predefined position.
  • said electronic control unit 7 is housed in said support foot 87.
  • the pump body 8 is made of a metallic material, for example is made of aluminum alloy.
  • each command module 3 comprises a module casing 30 inside which the impeller chamber 300 is defined.
  • each command module 3 consists of two half-shells.
  • the command module 3 comprises a flat shell 31 and a volute shell 32 mutually joined to each other.
  • the flat shell 31 is suitable for engaging the pump body 8.
  • the volute shell 32 is suitable for defining the volute in which and according to which the cooling liquid flows.
  • volute shell 32 comprises an inlet mouth 321 and an outlet mouth 322.
  • the impeller shaft 5 is supported, aligned with the main axis X-X, by the flat shell 31.
  • the flat shell 31 comprises a support opening 310 which is engaged by the impeller shaft 5 (in particular, the impeller shaft 5 is also understood to include the relative support bearing).
  • control portion 52 of the impeller shaft protrudes from the flat shell 31.
  • the rotor 6 is mounted on the impeller shaft 5 positioned outside the module casing 30.
  • the flat shell 31 comprises an annular housing for the rotor housing 316 in which the discoidal element 61 is housed.
  • each command module 3 comprises a dynamic gasket 35 positioned in said support opening 310.
  • the module casing 30 is made of a plastic material.
  • the impeller shafts 5 and the rotors 6 are partially housed (as shown by way of example in the accompanying figures). In this way, the axial dimensions of the pump group are maximized.
  • the object of the present invention is also a cooling system of a vehicle which comprises a pump group having the features described above and the advantages highlighted below.
  • the two command modules 3 operate in series.
  • a predefined quantity of cooling liquid flows first in the first command module 3 and subsequently in the second command module 3.
  • the same flow rate of cooling liquid is subjected to a combined action of the two impellers 4.
  • the two command modules 3 operate in parallel.
  • two predefined distinct quantities of cooling liquid each flow into a respective command module 3.
  • the pump group 1 moves a flow rate of double cooling liquid.
  • the cooling system of a vehicle comprising, in addition to the pump group 1, a plurality of valve groups which manage the flowing directions of the cooling liquid flowing in the system.
  • the two command modules 3 of the pump group 1 operate in series or in parallel.
  • Figure 5 shows, by way of example, a graph representing the operating curve of a pump group belonging to the prior art, and of the pump group object of the present invention in the respective operating configurations (i.e. in series or in parallel); in which the pump group belonging to the prior art and the pump group object of the present invention are in identical conditions (i.e. rotor speed of the impeller and resistance curve of the plant); in particular, the curves of the pump group object of the present invention take into account that the command modules are mutually identical.
  • the pump group object of the present invention solves the problems of the prior art, providing a pump group which is adapted to manage the cooling liquid in an extremely versatile manner, overcoming the drawbacks of the prior art solutions.
  • the cooling system of the present invention also fully fulfills the intended purpose.
  • the pump group of the present invention is suitable for managing the same amount of cooling liquid in series.
  • the pump group object of the present invention is suitable for managing in parallel distinct quantities of cooling liquid.
  • the pump group of the present invention is compact and not bulky, suitable for being housed in a vehicle, for example in the engine compartment of a vehicle.
  • the pump group object of the present invention can be provided with identical command modules.
  • the pump group object of the present invention can be provided with command modules having different features, for example with different impellers and/or the different volutes.
  • the pump group object of the present invention has balanced axial forces and stresses.
  • the pump group object of the present invention produces little noise.
  • stator is controlled by a single control unit.
  • control unit is in a position in which its cooling is facilitated.
  • the pump group can be controlled in an operating mode in which the two modules cooperate in series and an operating mode in which the two modules cooperate in parallel.

Landscapes

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

Claims (13)

  1. Groupe pompe (1) d'un système de refroidissement d'un véhicule, de préférence pour refroidir le groupe moteur du véhicule, ayant un axe principal (X-X) comprenant :
    un stator à flux axial (2) qui produit une action électromagnétique dans une direction parallèle à l'axe principal (X-X) ;
    - deux modules de commande (3) positionnés aux deux extrémités axiales opposées du stator (2), définissant des chambres de roue (300) respectives dans lesquelles le liquide de refroidissement s'écoule, dans lequel chaque module de commande (3) comprend :
    i) une roue (4) ;
    ii) un arbre de roue (5) qui s'étend le long de l'axe principal (X-X) et comprend une extrémité de roue (51) sur laquelle la roue (4) est raccordée solidairement et une portion de commande (52) adaptée pour recevoir une action de commande de rotation ;
    iii) un rotor (6) raccordé solidairement à ladite portion de commande (52) commandable en rotation par l'action du stator (2) ;
    - un corps de pompe (8) comprenant une chambre de stator (82) de forme spéciale, dans laquelle le stator (2) est logé, dans lequel les deux modules de commande (3) sont montés sur le corps de pompe (8) sur deux côtés axiaux opposés ;
    dans lequel chaque module de commande (3) comprend en outre un boîtier de module (30), à l'intérieur duquel la chambre de roue (300) est définie, comprenant une coque plate (31) et une coque en volute (32) en mise en prise mutuelle l'une avec l'autre, dans lequel l'arbre tournant (5) est supporté aligné avec l'axe principal (X-X) par la coque plate (31) à travers une ouverture de support (310) et la portion de commande (52) fait saillie de la coque plate (31).
  2. Groupe pompe (1) selon la revendication 1, dans lequel le stator (2) comprend des premiers pôles de stator adaptés pour produire une action électromagnétique dans une première direction axiale pour commander le rotor (6) du premier module de commande (3) et des seconds pôles de stator adaptés pour produire une action électromagnétique dans une seconde direction axiale pour commander le second rotor (6) du second module de commande (3).
  3. Groupe pompe (1) selon l'une quelconque des revendications précédentes, dans lequel le rotor (6) comprend un élément discoïdal (61) de forme annulaire sensiblement plane dans lequel sont logés les pôles de rotor angulairement équidistants.
  4. Groupe pompe (1) selon l'une quelconque des revendications précédentes, selon lequel le rotor (6) comprend un élément central (62) raccordé solidairement à la portion de commande (52) de l'arbre tournant (5).
  5. Groupe pompe (1) selon l'une quelconque des revendications précédentes, dans lequel la roue (4) est du type radial et reçoit du liquide de refroidissement dans une direction parallèle à l'axe principal (X-X) pour exercer une action de poussée sur celui-ci dans la direction radiale par rapport à l'axe principal (X-X).
  6. Groupe pompe (1) selon l'une quelconque des revendications précédentes, dans lequel chaque module de commande (3) comprend un joint dynamique (35) positionné dans ladite ouverture de support (310).
  7. Groupe pompe (1) selon l'une quelconque des revendications précédentes, comprenant en outre une unité de commande électronique (7) raccordée de manière opérationnelle au stator (2) pour commander l'actionnement de celui-ci.
  8. Groupe pompe (1) selon la revendication 7, dans lequel le corps de pompe (8) comprend un pied de support (87) dans lequel ladite unité de commande électronique (7) est logée.
  9. Groupe pompe (1) selon l'une quelconque des revendications précédentes, dans lequel les arbres tournants (5) et les rotors (6) sont partiellement logés dans une cavité de stator (20).
  10. Groupe pompe (1) selon l'une quelconque des revendications précédentes, dans lequel les deux modules de commande (3) sont identiques l'un à l'autre.
  11. Système de refroidissement d'un véhicule comprenant un groupe pompe (1) selon l'une quelconque des revendications 1 à 10, dans lequel les deux modules de commande (3) fonctionnent en série, de sorte qu'une quantité prédéfinie de liquide de refroidissement s'écoule d'abord dans le premier module de commande (3) puis dans le second module de commande (3).
  12. Système de refroidissement d'un véhicule comprenant un groupe pompe (1) selon l'une quelconque des revendications 1 à 10, dans lequel les deux modules de commande (3) fonctionnent, raccordés fluidiquement l'un à l'autre, en parallèle, de sorte qu'une quantité prédéfinie respective de liquide de refroidissement s'écoule dans chaque module de commande (3).
  13. Système de refroidissement d'un véhicule comprenant un groupe pompe (1) selon l'une quelconque des revendications 1 à 10 et une pluralité de groupes vannes qui gèrent les directions d'écoulement du liquide de refroidissement s'écoulant dans l'installation, dans lequel les deux modules de commande (3) du groupe pompe (1) fonctionnent en série ou en parallèle selon le positionnement desdits groupes vannes.
EP19813135.1A 2018-12-11 2019-11-13 Groupe de pompes comprenant deux modules de commande Active EP3894707B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT201800010971 2018-12-11
PCT/IB2019/059747 WO2020121083A1 (fr) 2018-12-11 2019-11-13 Groupe de pompes comprenant deux modules de commande

Publications (2)

Publication Number Publication Date
EP3894707A1 EP3894707A1 (fr) 2021-10-20
EP3894707B1 true EP3894707B1 (fr) 2022-11-23

Family

ID=65861555

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19813135.1A Active EP3894707B1 (fr) 2018-12-11 2019-11-13 Groupe de pompes comprenant deux modules de commande

Country Status (5)

Country Link
US (1) US20220025889A1 (fr)
EP (1) EP3894707B1 (fr)
CN (1) CN113195897B (fr)
MX (1) MX2021005103A (fr)
WO (1) WO2020121083A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022202216A1 (de) * 2022-03-04 2023-09-07 Vitesco Technologies GmbH Ventil-Pumpen-Einheit
US11852147B2 (en) * 2022-04-04 2023-12-26 Cooper-Standard Automotive Inc. Multifunctional pump assembly
DE102022003688A1 (de) 2022-10-05 2024-01-11 Mercedes-Benz Group AG Pumpe, insbesondere für ein Kraftfahrzeug

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Also Published As

Publication number Publication date
EP3894707A1 (fr) 2021-10-20
WO2020121083A1 (fr) 2020-06-18
CN113195897B (zh) 2023-06-09
US20220025889A1 (en) 2022-01-27
MX2021005103A (es) 2021-06-15
CN113195897A (zh) 2021-07-30

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