EP3384162B1 - Rotorgruppe einer kühlpumpe eines fahrzeugkühlkreislaufs mit einem rotorkörper - Google Patents

Rotorgruppe einer kühlpumpe eines fahrzeugkühlkreislaufs mit einem rotorkörper Download PDF

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Publication number
EP3384162B1
EP3384162B1 EP16822535.7A EP16822535A EP3384162B1 EP 3384162 B1 EP3384162 B1 EP 3384162B1 EP 16822535 A EP16822535 A EP 16822535A EP 3384162 B1 EP3384162 B1 EP 3384162B1
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EP
European Patent Office
Prior art keywords
rotor
group
shaft
impeller
rotor group
Prior art date
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Active
Application number
EP16822535.7A
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English (en)
French (fr)
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EP3384162A1 (de
Inventor
Stefano Belfiore
Fabio FRANCIA
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Industrie Saleri Italo SpA
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Industrie Saleri Italo SpA
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Publication of EP3384162A1 publication Critical patent/EP3384162A1/de
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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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid 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
    • 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
    • F04D13/0606—Canned motor 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
    • 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
    • F04D13/0606—Canned motor pumps
    • F04D13/064—Details of the magnetic circuit
    • 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
    • F04D29/18—Rotors
    • F04D29/20—Mounting rotors on shafts
    • 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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2205—Conventional flow pattern
    • F04D29/2222—Construction and assembly
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/20—Manufacture essentially without removing material

Definitions

  • This invention relates to a rotor group of a cooling pump for a cooling system of a vehicle. This invention also relates to the cooling pump that comprises said rotor group and the production method of said rotor group.
  • Known cooling pumps for a cooling system of a vehicle are typically suitable for moving a predefined quantity of cooling liquid towards predefined components of the vehicle that need to be cooled at specific times of the life cycle and use of the vehicle; these components include the engine, but also the turbo (or turbocharger), the exhaust gas recirculation system and the like.
  • electric cooling pumps are known in which the movement of the impeller is obtained by means of an electronically controlled electric motor; these pumps comprise a plurality of components: among others, for example, the impeller, the rotation shaft on which it is mounted, the electric motor group operating on the shaft and the electronic means that control said electric motor.
  • the purpose of this invention is to provide a rotor group that solves the drawbacks described above linked to the known solutions, such as to provide a limited number of components, obtainable through a simplified production and assembly process.
  • reference number 1 identifies, in its entirety, a rotor group covered by this invention.
  • this rotor group 1 is used in the automotive sector as a component of a cooling pump 900 of a cooling circuit of a vehicle, as described below.
  • the rotor group 1 comprises a shaft 2 that extends along the axis X-X.
  • the shaft 2 is a component in itself; preferably the shaft 2 is made of metal.
  • the shaft 2 in some further embodiments, is an integral part of other components of the rotor group.
  • the rotor group 1 comprises a rotor 3 fixed to a rotor end 23 of the shaft 2.
  • the rotor 3 is suitable to be electromagnetically actuated in rotation by a stator 930 in turn controlled by electronic control means 931 (stator 930 and electronic control means 931 in turn comprised in the pump 900, covered by this invention, according to a preferred embodiment); wherein the shaft 2 is integral in rotation with the rotor 3.
  • the rotation of the rotor 3 corresponds to the rotation of the shaft 2.
  • the rotor 3 includes a rotor frame 30 having a central cavity 320 in which the shaft 2 extends axially.
  • the rotor 3 also comprises a plurality of polar cavities 310 arranged, preferably axially, in proximity to or on peripheral walls of the rotor frame 30, wherein said polar cavities are suitable to be engaged by the stator 930.
  • the rotor 3 comprises a plurality of inserts 31 suitable to operate as rotor poles, preferably engaged by respective stator poles.
  • the inserts 31 are accommodated in said polar cavities 310.
  • the inserts 31 are placed, for example glued, on the outer walls of the rotor frame 30.
  • the inserts 31 are magnetically sensitive, that is to say suitable to be pushed by a magnetic field, to put the rotor 3 and shaft 2 in rotation.
  • the inserts 31 are made of ferromagnetic material, for example, are magnetisable.
  • the rotor frame 30 is constituted by a plurality of sheet metal elements 30' axially aligned.
  • each sheet metal element 30' preferably made of metal, has on its surface a central opening and a plurality of polar openings, in such a way as to create, once the sheet metal elements 30' are axially aligned, the corresponding central cavity 320 and any polar cavities 310.
  • a sheet metal element 30' at the lateral end of the rotor frame has at least one radial protuberance 310' internally polar opening suitable to axially lock the respective insert 31 inserted axially in the rotor frame 30.
  • the rotor group 1 comprises a main device 5.
  • the main device 5 has the dual function of providing support to the rotor 3 in its engagement with the shaft 2 and allowing rotation and circulation of the cooling liquid in the cooling circuit.
  • the main device (5) is made in a single piece.
  • the main device 5 is made in two pieces.
  • the main device 5 is in a material chosen from polymeric materials, such as PPS (or polyphenylene sulphide), preferably loaded in glass fibres.
  • the main device 5 is formed in a semi-crystalline high performance thermoplastic material with excellent mechanical properties (resistance to deformation, rigidity and strength) and excellent thermal and chemical resistance, so as to be suitable to function immersed in the cooling fluid.
  • the main device 5 extends, in height, along the axis X-X.
  • the main device 5 comprises a rotor body 53 suitable to solidly support the rotor 3 at the rotor end 23 of the shaft 2.
  • the rotor body 53 extends from the shaft 2, for example radially, until surrounding the rotor 3 in its entirety.
  • the rotor body 53 is also suitable to lock and cover the inserts 31 placed on the rotor frame 30.
  • the rotor body 53 is suitable to lock the respective inserts 31 in the polar cavities 310, preferably at the opposite side with respect to the side of the rotor frame 30 equipped with sheet metal element 30' comprising radial protuberances 310'.
  • the rotor body 53 comprises an insulation layer 532 placed between the rotor 3 and the shaft 2.
  • the insulation layer 532 placed between the rotor 3 and the shaft 2.
  • the rotor frame 30, in accordance with what is described above, has, parallel to the axis X-X a plurality of through holes 350; in this embodiment, the rotor body 53 comprises a plurality of support pins 530 respectively accommodated in said through holes 350.
  • the main device 5 also comprises an impeller body 54 that extends radially from the shaft 2 at an impeller end 24 opposite the rotor end 23.
  • the impeller body 54 is integral in rotation with the shaft 2, and is suitable to control the circulation of cooling liquid in the cooling circuit.
  • the main device 5 comprises a radial impeller body 54 that extends radially from the shaft 2.
  • the impeller body 54 There is no limitation to the geometrical forms of the impeller body 54.
  • the shaft 2 comprises at least one outer surface portion 28 provided with radial cavities to which the main device 5 is suitable to engage integrally.
  • both the rotor end 23 and the impeller end 24 have their own outer surface portions 28 provided with radial cavities, for example, they have knurled outer surfaces.
  • the main device 5 is moulded, in its entirety, directly around the shaft 2 and rotor 3.
  • the rotor body 53 in its outer wall, has a maximum thickness of less than 1 millimetre, preferably 0.7 mm, so as to allow an effective functioning of the rotor 30 in its electrical engagement with the stator 930 when it is mounted comprised in a cooling pump 900, without affecting the efficiency of the pump.
  • the main device 5 comprises a collar 55 that extends between the rotor body 53 and impeller body 54, in height along the axis X-X radially surrounding the shaft 2.
  • the main device 5 comprises the rotor body 53 moulded, in its entirety, directly around the shaft 2 and the rotor 3.
  • the main device 5 comprises an impeller body 54 that is successively fitted on the shaft 2.
  • This invention also covers the cooling pump 900 of a cooling system of a vehicle comprising the rotor assembly 1 described above.
  • the cooling pump 900 comprises a pump body 912 connectable with the channels (suction and discharge) of the cooling system.
  • the pump body 912 includes a desired element, connectable with said channels, and a casing element, suitable to house the various components.
  • the pump body 912 defines a water chamber 914 in which is housed the rotor group 1, i.e., the impeller body 54 and the rotor body 53 containing the rotor 3.
  • the impeller chamber 914' specifically suitable to contain the impeller body 54 and a predetermined amount of water placed in motion by it.
  • the pump body 912 delimits a sealed chamber 913, sealingly separated from the water chamber 914, housing a stator group 930 and electronic control means 931 in turn comprised in the cooling pump 900.
  • the stator group 930 is electromagnetically engaged with the rotor 30 on command of the electronic control means 931.
  • the electronic control means 931 command the action of the stator 930 on the rotor 30 causing it to rotate and inducing in rotation also the impeller body 54.
  • the pump body 912 internally to it, comprises a central structure 912' suitable to rotationally support the rotor group 1 and to separate the water chamber 914 and the sealed chamber 913 from each other.
  • a central structure 912' suitable to rotationally support the rotor group 1 and to separate the water chamber 914 and the sealed chamber 913 from each other.
  • one end of the rotor group 1, in particular the shaft 2 is rotationally supported by the central structure 912'.
  • the pump body 912 comprises a support portion 912" suitable to rotationally support the other end of the rotor group 1.
  • the pump body 912 defines a water chamber 914 in which is housed a portion of the rotor group 1, and in particular its impeller body 54.
  • the impeller chamber 914' specifically suitable to contain the impeller body 54 in which the latter is moved in rotation to move the water.
  • the pump body 912 defines a rotor chamber 915 suitable to house the rotor body 53 containing the rotor 3.
  • the pump body 912 delimits a sealed chamber 913, sealingly separated from the water chamber 914, housing a stator group 930 and electronic control means 931 in turn comprised in the cooling pump 900.
  • the stator group 930 is electromagnetically engaged with the rotor 30 on command of the electronic control means 931.
  • the electronic control means 931 command the action of the stator 930 on the rotor 30 causing it to rotate and also inducing the impeller body mounted on it in rotation.
  • the pump body 912 internally to it, comprises a central structure 912' suitable to rotationally support the rotor group 1 and to separate the rotor chamber 915 and the water chamber 914 from the sealed chamber 913.
  • said central structure 912' also comprises a separation and support flange 912''' suitable to separate the water chamber 914 from the rotor chamber 915 and to rotationally support the rotor group 1.
  • the separation and support flange 912''' is suitable to rotationally engage the rotor group 1, in particular, rotationally engaging the shaft 2 being interposed between the rotor body 53 and impeller body 54.
  • the separation and support flange 912''' houses an element with low coefficient of friction suitable to allow the rotation of the shaft 2.
  • the rotor group 1 is rotationally supported at one end thereof by the central structure 912', while an intermediate portion is supported by the separation and support flange 912'''.
  • this invention also covers the production method of the rotor group 1 described above.
  • This production method is carried out by means of a press, for example a specially shaped mould 700, identifying a rotor compartment 703 and an impeller compartment 704 preferably in communication with each other through a collar compartment 705, wherein said areas have a shape substantially complementary to that of the corresponding components of the rotor group 1.
  • the production method comprises the step of:
  • the step of injecting the material is performed by injecting the material in a direction parallel to the axis X-X so that the material fills the impeller compartment 704 first and then the rotor compartment 703.
  • the production method also comprises the step of:
  • the rotor 3 and possibly the shaft 2 are heated to promote the adhesion of the plastic during the moulding step and not create mechanical and thermal stress due to the premature solidification of the material.
  • the production method also comprises the step of:
  • the mould 700 is heated (and is kept in a predefined temperature range) to facilitate the flow of the plastic, avoiding thermal and mechanical stress due to premature solidification of the material.
  • the mould 700 is heated to a temperature higher than 145 °C.
  • the press comprises a plurality of pin elements 710 that extend into the rotor compartment 703 of the mould, on which is threaded the rotor frame 30 in the respective through holes 350; when this press is used, the production method also comprises the step of:
  • the production method described above is similarly reproducible for the production of the second embodiment of the rotor group 1 in which the rotor body 53 and impeller body 54 are in two distinct parts. Specifically, this production method is carried out by means of a press, for example using a specially shaped mould 700, identifying a rotor compartment 703 having an area substantially complementary to that of the corresponding components of the rotor group 1.
  • mould 700 does not have the above described impeller compartment 704 and collar compartment 705, and the step of the method in which the liquid material is injected into the mould 700 has the filling of the rotor compartment 703.
  • the step of the injection of the material is performed by injecting the material in a direction parallel to the axis X-X "from top to bottom”; for example, said method is performed again on a press that comprises a plurality of pin elements 710 that extend into the rotor compartment 703 of the mould, on which is threaded the rotor frame 30 in the respective through holes 350.
  • the production method comprises the step of:
  • a further characteristic of the rotor group 1 of this invention, in both the "integral" embodiment, i.e., comprising rotor body 53 and impeller body 54, and in the “simple” embodiment, i.e., comprising rotor body 53 and impeller body 54 separated from each other, is that of providing a balancing disc 39, preferably made of metal, on which are executable mechanical operations of removal of material, in such a way as to make recoverable any mass unbalance between rotor 3, rotor body 53 and shaft 2 with respect the rotation axis X-X.
  • the balancing disc 39 is positioned at one end of the rotor frame 30' in order to allow the execution of said mechanical operations on it.
  • the rotor body 53 is suitable to recover at least partially the balancing disc 39, covering it and locking it.
  • the balancing disc 39 is positioned on the bottom of the rotor 3, for example, is housed in the rotor compartment 703 on its bottom.
  • the rotor group, the cooling pump and the production method of the rotor group of this invention solve the problems of the known art.
  • only a few components require specific assembly steps, as such components are made in a single process step, in a single piece.
  • the production and assembly of these components is much faster, and less costly.
  • the rotor group and the cooling pump that comprises it are of extremely compact size compared to prior art solutions: these components thus take up less space than the solutions of the prior art, thus minimising their overall dimensions in the engine compartment of the respective vehicle. Therefore, the rotor group is extremely advantageous from the point of view of saving space in the automotive sector.
  • a further advantageous aspect lies in the fact that many assembly operations are more reliable since not carried out by operators: for example, in the rotor group of this invention, there is no longer the step of shrink fitting and/or the step of insertion by interference of the impeller and/or rotor on the respective shaft.
  • a still further advantageous aspect consists in the fact that the rotor body of the main device is suitable to pack block the rotor, and in particular the sheet metal elements that comprise the rotor frame and inserts accommodated in the rotor body.
  • the rotor body of the main device is suitable to protect the rotor, and particularly the inserts, from external agents, for example the water that wets it, or moisture.
  • the rotor body isolates the rotor from the other components including the shaft (in the embodiment in which the shaft is in turn comprised in the main device).
  • a still further advantageous aspect lies in the fact that, in the embodiment with shaft not co-moulded with the other components, said shaft is suitable to maintain the rotor group aligned along its axis.
  • any misalignments between rotor and shaft in the moulding steps are recovered by simple mechanical operations on said disc.
  • the production method of the rotor group is simple, since it does not require strong operator skills; in fact, the method is semi-automated.
  • the heated mould allows a slower and more controlled cooling of the fluid material injected into the mould.
  • the heated components accommodated in the mould result in a slower cooling of the fluid material injected, improving the quality of the main device.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Motor Or Generator Cooling System (AREA)

Claims (14)

  1. Rotorgruppe (1) einer Kühlpumpe (900) eines Fahrzeugkühlkreislaufs, umfassend:
    - eine Welle (2), welche entlang einer Achse (X-X) verläuft,
    - einen Rotor (3), welcher an einem Rotorende (23) der Welle (2) befestigt ist und einen Rotorrahmen (30) umfasst, welcher einen zentralen Hohlraum (320), in dem die Welle (2) verläuft, und eine Vielzahl von Einsätzen (31) hat, die geeignet sind, als Rotorpole zu arbeiten;
    - eine Hauptvorrichtung (5), die welche entlang der Achse (X-X) verläuft und umfasst:
    i) einen Rotorkörper (53), welcher von der Welle (2) ausgeht und den Rotor (3) umgibt, dafür geeignet, den Rotor (3) an dem Rotorende (23) fest eingebaut zu halten; und
    ii) einen Impellerkörper (54), welcher von der Welle (2) an einem Impellerende (24) derselben, das dem Rotorende (23) abgewandt ist, in radialer Richtung ausgeht;
    wobei die Rotorgruppe (1) dadurch gekennzeichnet ist, dass der Rotorrahmen (30) parallel zu der Achse (X-X) eine Vielzahl von Durchgangslöchern (350) hat, wobei der Rotorkörper (53) eine Vielzahl von Haltestiften (530) umfasst, welche jeweils in den Durchgangslöchern (350) aufgenommen sind.
  2. Rotorgruppe (1) nach Anspruch 1, wobei der Rotorkörper (53) aus einem Material besteht, das aus Polymermaterialien gewählt ist, wie beispielsweise PPS, vorzugsweise in Glasfasern geladen.
  3. Rotorgruppe (1) nach einem der vorhergehenden Ansprüche, wobei welcher der Rotorkörper (53) direkt an der Welle (2), an ihrem Rotorende (23) ausgebildet ist und der Impellerkörper (53) an ihrem Rotorende (24) auf der Welle (2) angebracht ist.
  4. Rotorgruppe (1) nach einem der vorhergehenden Ansprüche, wobei der Rotorrahmen (30) eine Vielzahl von Polhohlräumen (310) begrenzt, welche peripher zu dem Rotorrahmen (30) angeordnet sind, in denen die Einsätze (31) jeweils aufgenommen sind, und der Rotorkörper (53) dafür geeignet ist, die jeweiligen Einsätze (31) in den Polhohlräumen (310) an dem Rotorrahmen festzulegen.
  5. Rotorgruppe (1) nach einem der vorhergehenden Ansprüche, wobei der Rotorrahmen (30) aus einer Vielzahl von Metallblechelementen (30') besteht, welche axial fluchtend angeordnet sind.
  6. Rotorgruppe (1) nach einem der vorhergehenden Ansprüche, wobei der Rotor (3) eine Ausgleichsscheibe (39) umfasst, durch welche jegliches Massen-Ungleichgewicht zwischen dem Rotor (3), dem Rotorkörper (53) und der Welle (2) in Bezug auf die Drehachse (X-X) behebbar ist.
  7. Rotorgruppe (1) nach einem der vorhergehenden Ansprüche, wobei die Welle (2) mindestens einen Außenflächenabschnitt (28) umfasst, welcher mit radialen Hohlräumen ausgestattet ist, in die der Rotorkörper (53) geeignet ist, fest eingebaut einzugreifen.
  8. Rotorgruppe (1) nach einem der vorhergehenden Ansprüche, wobei der Rotorkörper (53) eine Isolierschicht (532) umfasst, die zwischen dem Rotor (3) und der Welle (2) angeordnet ist.
  9. Rotorgruppe (1) nach einem der Ansprüche 1 bis 6, bei der die Welle (2) auch ein fest eingebauter Teil der Hauptvorrichtung (5) ist.
  10. Kühlpumpe (900) eines Fahrzeugkühlsystems, umfassend eine Rotorgruppe (1) nach einem der vorhergehenden Ansprüche, wobei die Kühlpumpe (900) einen mit den Kühlsystemkanälen verbindbaren Pumpenkörper (912) umfasst, welcher eine Wasserkammer (914) begrenzt, in welcher ein Teil der Rotorgruppe (1), wie beispielsweise der Impeller (54), vorzugsweise in einer Impellerkammer (914') aufgenommen ist, eine Rotorkammer (915) begrenzt, welche geeignet ist, den den Rotor (3) enthaltenden Rotorkörper (53) aufzunehmen, und eine abgedichtete Kammer (913) begrenzt, in welcher eine Statorgruppe (930) und elektronische Steuermittel oder Regelmittel (931), welche ihrerseits in der Kühlpumpe (900) enthalten sind, aufgenommen ist;
    wobei der Pumpenkörper (912) eine zentrale Struktur (912') umfasst, welche geeignet ist, die Wasserkammer (914) von der Rotorkammer (915) zu trennen und die Rotorgruppe (1) drehbar zu halten, vorzugsweise einen Trenn- und Halteflansch (912''').
  11. Fertigungsverfahren, unter Verwendung einer Presse, einer Rotorgruppe (1) nach einem der Ansprüche 1 bis 9, die folgenden Schritte umfassend:
    - Aufnehmen in einer speziell geformten Form (700), welche einen Rotorraum (703) identifiziert, des Rotors (3) und/oder der Welle (2);
    - Einspritzen von flüssigem Material zum Füllen der Form (700);
    - Warten, bis das Material abkühlt und fest wird, welches die Hauptvorrichtung (5) darstellt;
    - Entfernen der vollständigen Hauptvorrichtung (5) aus der Form (700);
    wobei die Presse eine Vielzahl von Stiftelementen (710) umfasst, welche sich in den Rotorraum (703) der Form (700) erstrecken, an denen der Rotorrahmen (31) in die jeweiligen Durchgangslöcher (350) eingeführt ist;
    wobei das Fertigungsverfahren dadurch gekennzeichnet ist, dass es ferner den folgenden Schritt umfasst:
    - axiales Bewegen der Stiftelemente (710) parallel zu der Achse (X-X) während der Phase des Einspritzens des Materials, derart, dass das eingespritzte flüssige Material in die Durchgangslöcher (350) eintritt, wobei es sie verschließt und die Haltestifte (530) bildet.
  12. Fertigungsverfahren einer Rotorgruppe (1) nach Anspruch 11, wobei der Schritt des Einspritzens des Materials durch Einspritzen des Materials in einer Richtung parallel zu der Achse (X-X) durchgeführt wird, sodass das Material den Rotorraum (703) von oben nach unten füllt.
  13. Fertigungsverfahren einer Rotorgruppe (1) nach einem der Ansprüche 11 und 12, den folgenden Schritt umfassend:
    - Erhitzen des Rotors (3) und gegebenenfalls der Welle (2) auf eine vorgegebene Temperatur.
  14. Fertigungsverfahren einer Rotorgruppe (1) nach einem der Ansprüche 11 bis 13, den folgenden Schritt umfassend:
    - Erhitzen der Form (700) auf eine vorgegebenen Temperatur und Halten derselben auf dieser Temperatur.
EP16822535.7A 2015-12-03 2016-11-23 Rotorgruppe einer kühlpumpe eines fahrzeugkühlkreislaufs mit einem rotorkörper Active EP3384162B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUB2015A006281A ITUB20156281A1 (it) 2015-12-03 2015-12-03 Gruppo rotore di una pompa di raffreddamento di un veicolo
PCT/IB2016/057071 WO2017093856A1 (en) 2015-12-03 2016-11-23 Rotor group of a cooling pump of a vehicle cooling circuit comprising a rotor body

Publications (2)

Publication Number Publication Date
EP3384162A1 EP3384162A1 (de) 2018-10-10
EP3384162B1 true EP3384162B1 (de) 2019-08-07

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EP16822535.7A Active EP3384162B1 (de) 2015-12-03 2016-11-23 Rotorgruppe einer kühlpumpe eines fahrzeugkühlkreislaufs mit einem rotorkörper

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EP (1) EP3384162B1 (de)
CN (1) CN108350887B (de)
HU (1) HUE047690T2 (de)
IT (1) ITUB20156281A1 (de)
WO (2) WO2017093855A1 (de)

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HUE047690T2 (hu) 2020-05-28
WO2017093855A1 (en) 2017-06-08
EP3384162A1 (de) 2018-10-10
WO2017093856A1 (en) 2017-06-08
CN108350887B (zh) 2019-09-24
ITUB20156281A1 (it) 2017-06-03

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