EP2462351B1 - Fluid pump - Google Patents

Fluid pump Download PDF

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Publication number
EP2462351B1
EP2462351B1 EP10730450.3A EP10730450A EP2462351B1 EP 2462351 B1 EP2462351 B1 EP 2462351B1 EP 10730450 A EP10730450 A EP 10730450A EP 2462351 B1 EP2462351 B1 EP 2462351B1
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EP
European Patent Office
Prior art keywords
impeller
plain bearing
bearing bush
fluid pump
basic material
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Active
Application number
EP10730450.3A
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German (de)
French (fr)
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EP2462351B2 (en
EP2462351A2 (en
Inventor
Bernd Hein
Christoph Heier
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Robert Bosch GmbH
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Robert Bosch GmbH
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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
    • F04D29/02—Selection of particular materials
    • F04D29/026—Selection of particular materials 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • F04D29/0462—Bearing cartridges
    • 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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • F04D29/047—Bearings hydrostatic; hydrodynamic
    • 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
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/10—Metals, alloys or intermetallic compounds
    • F05D2300/17—Alloys
    • F05D2300/171—Steel alloys
    • 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
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/40—Organic materials
    • F05D2300/43—Synthetic polymers, e.g. plastics; Rubber
    • 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
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/50—Intrinsic material properties or characteristics
    • F05D2300/509—Self lubricating materials; Solid lubricants
    • 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
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/50—Intrinsic material properties or characteristics
    • F05D2300/512—Hydrophobic, i.e. being or having non-wettable properties
    • 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
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/60—Properties or characteristics given to material by treatment or manufacturing
    • F05D2300/603—Composites; e.g. fibre-reinforced

Definitions

  • the invention relates to a liquid pump and a method for forming a liquid pump, in particular water pump, with a bearing pin on which an impeller is rotatably mounted with a plain bearing bush.
  • a liquid pump in particular water pump
  • Such a pump is eg from the GB 979009 known.
  • Liquid pumps in particular water pumps, are used, for example, in motor vehicles to ensure coolant circulation.
  • Various types of liquid pumps are used.
  • Liquid pumps are usually designed in two parts and comprise a pump region and an engine region.
  • an impeller can serve as an impeller for the liquid circulation and for driving the liquid pump.
  • the impeller is usually formed of a Plastoferrit to have magnetic properties.
  • the impeller is connected to a plain bearing bush, which is formed for example of a synthetic resin bonded press coal. As a result, the impeller can be used as a rotor which rests with the plain bearing bushing on a bearing pin and rotates about the bearing pin.
  • a sliding bearing which consists of a sintered plastic material, in the pores at least partially a solid or liquid lubricant such.
  • B. graphite or oil is provided
  • the object of the invention is to provide an improved liquid pump.
  • An advantage of the liquid pump according to the invention is that the Flugirad and the plain bearing bush are formed of a same base material in one piece or in several parts and thus have the same material properties.
  • the impeller and the slide bearing bushing have an at least similar coefficient of thermal expansion, so that cracking due to internal stresses in the components can be reduced or avoided.
  • the manufacturing time and the manufacturing cost can be reduced by the impeller and the plain bearing bush are also made in one piece in an injection molding process.
  • another material of the plain bearing bush comprises wax and / or carbon powder.
  • the base material comprises polyamides, polyphthalamides, partially crystalline, partially aromatic polyamides or polyphenylsulfides. These materials have a necessary hydrolysis resistance to the pumped medium, so that the material does not dissolve in use.
  • the impeller comprises a magnetic material.
  • the magnetic material preferably comprises ferrite powder embedded in the base material. Due to the magnetic powder, the impeller has magnetic properties, so that the impeller can be used as a rotor of the liquid pump and thus serves for the transmission of the magnetic forces or driving forces.
  • the bearing pin is made of stainless steel. As a result, the bearing pin is corrosion resistant.
  • a flushing channel in the form of a groove in the plain bearing bush is arranged.
  • a hydrostatic and / or hydrodynamic sliding bearing can be realized.
  • the fluid is used as a lubricant for the sliding bearing.
  • a labyrinth seal is arranged on the liquid pump. Due to the labyrinth seal can prevent impurities that arise in the pump area of the liquid pump, get into the engine area of the liquid pump.
  • FIG. 1 is a schematic partial view of a liquid pump in the form of a water pump 1 is shown.
  • the water pump 1 has an engine region 18 and a pump region, not shown.
  • the motor region 18 of the water pump 1 comprises a pot-shaped housing 10.
  • the pot-shaped housing 10 is preferably made of a thermoplastic material, such as polyphthalamide or polyphenylene sulfide, in an injection molding process Alternatively, the pot-shaped housing 10 can be made of any other non-magnetic material. Since the water pump 1 is electrically driven, a rotor 19 is formed within the cup-shaped housing 10 and a stator, which is not shown in the illustration, is formed outside the cup-shaped housing 10. Furthermore, the cup-shaped housing 10 comprises a knob 15, a labyrinth seal 14 and a bearing pin thirteenth
  • the nub 15 is arranged as an assembly aid on the cup-shaped housing 10 and is used for easy positioning of the motor region 18 at the pump region of the water pump 1.
  • the labyrinth seal 14 is designed to seal off the motor region 18 from the pump region of the water pump 1 as a cutout on the cup-shaped housing 10. Since the water pump 1 is used in the motor vehicle, the internal combustion engines are produced in an injection molding process, residues from the molding sand can get into the fluid.
  • the molding sand may have residual magnetism that can be attracted to the magnetically executed rotor 19.
  • the labyrinth seal 14 can be prevented that the medium, which may have a small amount of molding sand, in the narrow gap between the cup-shaped housing 10 and the rotor 19 passes, which can lead to a blocking of the rotor 19.
  • the pumped medium in the water pump 1 can be a water / glycol mixture.
  • the bearing pin 13 is made of stainless steel, for example. Before the injection molding of the cup-shaped housing 10 of the bearing pin is positioned centrally in the injection mold and then encapsulated with the thermoplastic material of the cup-shaped housing 10. As a result, the bearing pin 13 is firmly fixed in the cup-shaped housing 10 of the water pump 1.
  • an impeller 11 is rotatably mounted with a plain bearing bushing 12 Further, the impeller 11 is rotatably mounted with the plain bearing bush 12 by means of the bearing pin 13 in a recess 20 on the cup-shaped housing 10.
  • the impeller 11 and the plain bearing bush 12 are formed of a same base material in one piece or in several parts.
  • the base material preferably comprises polyamides (PA6), polyphthalamides (PPA), partially crystalline, partially aromatic polyamides (PA6T / 6I) or polyphenylsulfides (PPS).
  • PA6 polyamides
  • PPA polyphthalamides
  • PA6T / 6I partially crystalline, partially aromatic polyamides
  • PPS polyphenylsulfides
  • the base material has a hydrolysis resistance to the pumped medium, so that the material is not in use dissolves.
  • other materials resistant to hydrolysis may be used as the base material for the impeller 11 and the plain bearing bush 12.
  • the impeller 11 comprises a magnetic material, preferably ferrite powder.
  • the magnetic material is introduced in the entire region of the impeller 11.
  • other magnetic particles or magnetic materials may be used.
  • the impeller 11 has magnetic properties due to the magnetic powder, so that the impeller 11 can be used as the rotor 19 of the water pump 1.
  • the plain bearing bush 12 has a further material which increases the sliding property of the plain bearing bush 12 on the bearing pin 13.
  • the further material is embedded in the region of a sliding surface in the base material, with which the slide bearing bushing 12 is rotatably mounted on the bearing pin 13.
  • a further material for example wax and / or carbon powder can be used.
  • other materials can be used, which are suitable.
  • the impeller 11 and the plain bearing bush 12 are manufactured in an injection molding process.
  • the impeller 11 and the plain bearing bush 12 can be produced in a two-stage injection molding process.
  • a first injection molding process the plain bearing bush 12 is manufactured.
  • a further material is mixed into the base material, so that a granulate for the injection molding process is formed.
  • the granules are placed in a funnel of an injection molding machine, wherein the granules are drawn from the hopper into a flight, divided and sheared.
  • the resulting friction heat in conjunction with the heat supplied by a heated cylinder, provides a relatively homogeneous melt.
  • the melt is injected under high pressure into the injection mold.
  • the impeller 11 Before the melt of the plain bearing bush 12 completely solidifies, the impeller 11 is injected in a second injection molding process and fused with the plain bearing bush 12, so that a one-piece component is formed.
  • the base material is mixed with a magnetic material.
  • more or less of the additional material or magnetic material can be mixed into the base material.
  • you can the injection molding process also be carried out in a single-stage injection molding process or in another sequence.
  • the narrow sliding fit 16 has a thickness of up to 0.08 mm over the entire sliding surface, thereby no contamination between the plain bearing bush 12 and enter the bearing pin 13. Furthermore, due to the tight sliding fit 16, increased wear due to the penetration of molding sand while at the same time lubrication due to wetting with the conveying medium is avoided.
  • a flushing channel 17 may be arranged.
  • the flushing channel 17 is arranged in the form of a groove in the plain bearing bush 12, so that funding or cooling water can flow into the plain bearing.
  • a hydrostatic and / or hydrodynamic sliding bearing can be realized, wherein the conveying medium can be used as a lubricant for the sliding bearing. This has the advantage above all of a relatively pure pumped medium.
  • the impeller 11 can be mounted with the plain bearing bush 12 floating on the bearing pin 13. As a result, the friction in storage is significantly reduced.
  • the invention is illustrated using the example of a water pump 1. However, the invention can also be used for other fluid pumps with another fluid. It is advantageous that the impeller 11 and the plain bearing bush 12 are formed from a same base material in one piece or in several parts. As a result, the impeller 11 and the plain bearing bush 12 have approximately the same material properties, so that cracking due to internal stresses in the components can be avoided. Further, the impeller 11 and the plain bearing bush 12 are formed of a hydrolysis resistant material.

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

Description

Die Erfindung betrifft eine Flüssigkeitspumpe sowie ein Verfahren zum Ausbilden einer Flüssigkeitspumpe, insbesondere Wasserpumpe, mit einem Lagerbolzen, auf dem ein Flügelrad mit einer Gleitlagerbuchse drehbar gelagert ist. Eine solche Pumpe ist z.B. aus der GB 979009 bekannt.The invention relates to a liquid pump and a method for forming a liquid pump, in particular water pump, with a bearing pin on which an impeller is rotatably mounted with a plain bearing bush. Such a pump is eg from the GB 979009 known.

Stand der TechnikState of the art

Flüssigkeitspumpen, insbesondere Wasserpumpen werden beispielsweise in Kraftfahrzeugen eingesetzt, um einen Kühlmittelumlauf sicherzustellen. Dabei kommen verschiedene Bauformen von Flüssigkeitspumpen zum Einsatz. Flüssigkeitspumpen sind meist zweiteilig ausgebildet und umfassen einen Pumpenbereich und einen Motorbereich. Dabei kann ein Flügelrad als ein Laufrad für den Flüssigkeitskreislauf sowie für den Antrieb der Flüssigkeitspumpe dienen. Das Flügelrad ist in der Regel aus einem Plastoferrit ausgebildet, um magnetische Eigenschaften aufweisen zu können. In der Regel ist das Flügelrad mit einer Gleitlagerbuchse verbunden, die beispielsweise aus einem Kunstharz gebundener Presskohle ausgebildet ist. Dadurch kann das Flügelrad als Rotor verwendet werden, der mit der Gleitlagerbuchse auf einem Lagerbolzen aufsitzt und um den Lagerbolzen rotiert.Liquid pumps, in particular water pumps, are used, for example, in motor vehicles to ensure coolant circulation. Various types of liquid pumps are used. Liquid pumps are usually designed in two parts and comprise a pump region and an engine region. In this case, an impeller can serve as an impeller for the liquid circulation and for driving the liquid pump. The impeller is usually formed of a Plastoferrit to have magnetic properties. In general, the impeller is connected to a plain bearing bush, which is formed for example of a synthetic resin bonded press coal. As a result, the impeller can be used as a rotor which rests with the plain bearing bushing on a bearing pin and rotates about the bearing pin.

Aufgrund der unterschiedlichen Temperaturausdehnung der Materialien des Flügelrads und der Gleitlagerbuchse kommt es häufig zu Rissbildungen durch innere Spannungen in den Bauteilen, das wiederum zum Versagen des Bauteils führen kann. Ferner ist die Hersteltung der Flüssigkeitspumpe zeitaufwändig, da die Gleitlagerbuchse im Spritzgusswerkzeug eingelegt werden muss bevor das Flügelrad über die Gleitlagerbuchse im Spritzgussverfahren gegossen werden kann.Due to the different temperature expansion of the materials of the impeller and the plain bearing bush, cracks often occur due to internal stresses in the components, which in turn can lead to failure of the component. Furthermore, the production of the liquid pump is time-consuming, since the sliding bearing bushing must be inserted in the injection molding tool before the impeller can be poured over the plain bearing bush by injection molding.

Aus der GB 979 009 A ist eine Wasserpumpe mit einem Lagerbolzen auf dem ein Flügelrad mit einer Gleitlagerbuchse drehbar gelagert ist, bekannt Das Flügelrad und die Gleitlagerbuchse sind dabei einstückig ausgebildetFrom the GB 979 009 A is a water pump with a bearing pin on which an impeller is rotatably mounted with a plain bearing bush, known The impeller and the plain bearing bush are formed integrally

Aus der DE 92 14 418 U1 ist ein Gleitlager bekannt, das aus einem gesinterten Plastikwerkstoff besteht, in dessen Poren zumindest anteilig ein fester oder flüssiger Schmierstoff wie z. B. Grafit oder Öl vorgesehen istFrom the DE 92 14 418 U1 is known a sliding bearing, which consists of a sintered plastic material, in the pores at least partially a solid or liquid lubricant such. B. graphite or oil is provided

Offenbarung der ErfindungDisclosure of the invention

Aufgabe der Erfindung ist es, eine verbesserte Flüssigkeitspumpe bereitzustel-len.The object of the invention is to provide an improved liquid pump.

Die Aufgabe der Erfindung wird durch eine Flüssigkeitspumpe nach Anspruch 1 sowie einem Verfahren zum Ausbilden einer Flüssigkeitspumpe nach Anspruch 9 gelöst. Weitere vorteilhafte Ausführungsformen der Erfindung sind in den abhangigen Ansprüchen angegeben.The object of the invention is achieved by a liquid pump according to claim 1 and a method for forming a liquid pump according to claim 9. Further advantageous embodiments of the invention are specified in the dependent claims.

Ein Vorteil der erfindungsgemäßen Flüssigkeitspumpe ist, dass das Flügeirad und die Gleitlagerbuchse aus einem gleichen Grundmaterial einstückig oder mehrteilig ausgebildet sind und somit gleiche Materialeigenschaften aufweisen. Dadurch verfügen das Flügelrad und die Gleitlagerbuchse Ober einen zumindest ähnlichen Temperaturausdehnungskoeffizienten, so dass eine Rissbildung durch innere Spannungen in den Bauteilen reduziert oder vermieden werden kann. Ferner können die Herstellungszeit sowie die Herstellungskosten dadurch reduziert werden, indem das Flügelrad und die Gleitlagerbuchse in einem Spritzgussverfahren auch einstückig hergestellt werden.An advantage of the liquid pump according to the invention is that the Flugirad and the plain bearing bush are formed of a same base material in one piece or in several parts and thus have the same material properties. As a result, the impeller and the slide bearing bushing have an at least similar coefficient of thermal expansion, so that cracking due to internal stresses in the components can be reduced or avoided. Furthermore, the manufacturing time and the manufacturing cost can be reduced by the impeller and the plain bearing bush are also made in one piece in an injection molding process.

In einer Ausführungsform der Erfindung umfasst ein weiterer Stoff der Gleitlagerbuchse Wachs und/oder Kohlepulver. Durch das Einbringen des weiteren Stoffes wie Wachs und/oder Kohlepulver in die Gleitlagerbuchse wird eine Verbesserung der Gleiteigenschaften auf dem Lagerbolzen erreicht.In one embodiment of the invention, another material of the plain bearing bush comprises wax and / or carbon powder. By introducing the further substance such as wax and / or carbon powder in the plain bearing bush, an improvement of the sliding properties is achieved on the bearing pin.

In einer weiteren Ausführungsform der Erfindung weist das Grundmaterial Polyamide, Polyphthalamide, teilkristalline, partiell aromatische Polyamide oder Polyphenylsulfide auf. Diese Materialien weisen eine notwendige Hydrolysebeständigkeit gegenüber dem Fördermedium auf, so dass sich das Material beim Gebrauch nicht auflöst.In a further embodiment of the invention, the base material comprises polyamides, polyphthalamides, partially crystalline, partially aromatic polyamides or polyphenylsulfides. These materials have a necessary hydrolysis resistance to the pumped medium, so that the material does not dissolve in use.

Gemäß der Erfindung weist das Flügelrad ein magnetisches Material auf. Dabei umfasst das magnetische Material vorzugsweise Ferritpulver, das in das Grundmaterial eingebettet ist. Aufgrund des Magnetpulvers weist das Flügelrad magnetische Eigenschaften auf, so dass das Flügelrad als Rotor der Flüssigkeitspumpe verwendet werden kann und somit zur Übertragung der Magnetkräfte bzw. Antriebskräfte dient.According to the invention, the impeller comprises a magnetic material. In this case, the magnetic material preferably comprises ferrite powder embedded in the base material. Due to the magnetic powder, the impeller has magnetic properties, so that the impeller can be used as a rotor of the liquid pump and thus serves for the transmission of the magnetic forces or driving forces.

In einer weiteren Ausführungsform der Erfindung ist der Lagerbolzen aus Edelstahl ausgebildet. Dadurch ist der Lagerbolzen korrosionsbeständig.In a further embodiment of the invention, the bearing pin is made of stainless steel. As a result, the bearing pin is corrosion resistant.

Ferner ist in einer weiteren Ausführungsform der Erfindung ein Spülkanal in Form einer Nut in der Gleitlagerbuchse angeordnet. Mit dem Spülkanal kann eine hydrostatische und/oder hydrodynamische Gleitlagerung realisiert werden. Dabei dient das Fördermedium als Schmiermittel für die Gleitlagerung.Furthermore, in a further embodiment of the invention, a flushing channel in the form of a groove in the plain bearing bush is arranged. With the flushing channel, a hydrostatic and / or hydrodynamic sliding bearing can be realized. The fluid is used as a lubricant for the sliding bearing.

In einer weiteren Ausführungsform der Erfindung ist eine Labyrinthdichtung an der Flüssigkeitspumpe angeordnet. Aufgrund der Labyrinthdichtung kann verhindert werden, dass Verunreinigungen, die im Pumpenbereich der Flüssigkeitspumpe entstehen, in den Motorbereich der Flüssigkeitspumpe gelangen.In a further embodiment of the invention, a labyrinth seal is arranged on the liquid pump. Due to the labyrinth seal can prevent impurities that arise in the pump area of the liquid pump, get into the engine area of the liquid pump.

Die Erfindung wird im Folgenden anhand von Ausführungsbeispielen unter Bezugnahme auf die beigefügten Zeichnungen näher erläutert. In den Zeichnungen zeigen beispielhaft die mehrstückige Ausführung:

Fig. 1
eine schematische Darstellung einer Wasserpumpe; und
Fig. 2
eine schematische Darstellung einer Wasserpumpe wie in Fig. 1 mit einem Spülkanal.
The invention will be explained in more detail below with reference to embodiments with reference to the accompanying drawings. In the drawings, by way of example, show the multi-piece design:
Fig. 1
a schematic representation of a water pump; and
Fig. 2
a schematic representation of a water pump as in Fig. 1 with a flushing channel.

In Figur 1 ist eine schematische Teildarstellung einer Flüssigkeitspumpe in Form einer Wasserpumpe 1 gezeigt. Die Wasserpumpe 1 weist einen Motorbereich 18 und einen nicht dargestellten Pumpenbereich auf. Der Motorbereich 18 der Wasserpumpe 1 umfasst ein topfförmig ausgebildetes Gehäuse 10. Das topfförmige Gehäuse 10 wird vorzugsweise aus einem thermoplastischen Kunststoff, wie Polyphthalamide oder Polyphenylensulfid, in einem Spritzgussverfahren hergestellt Alternativ kann das topfförmige Gehäuse 10 aus jedem anderen nichtmagnetischen Werkstoff gefertigt werden. Da die Wasserpumpe 1 elektrisch angetrieben wird, ist innerhalb des topfförmigen Gehäuse 10 ein Rotor 19 und außerhalb des topfförmigen Gehäuses 10 ein Stator, der in der Darstellung nicht gezeigt ist, ausgebildet. Ferner umfasst das topfförmige Gehäuse 10 einen Noppen 15, eine Labyrinthdichtung 14 und einen Lagerbolzen 13.In FIG. 1 is a schematic partial view of a liquid pump in the form of a water pump 1 is shown. The water pump 1 has an engine region 18 and a pump region, not shown. The motor region 18 of the water pump 1 comprises a pot-shaped housing 10. The pot-shaped housing 10 is preferably made of a thermoplastic material, such as polyphthalamide or polyphenylene sulfide, in an injection molding process Alternatively, the pot-shaped housing 10 can be made of any other non-magnetic material. Since the water pump 1 is electrically driven, a rotor 19 is formed within the cup-shaped housing 10 and a stator, which is not shown in the illustration, is formed outside the cup-shaped housing 10. Furthermore, the cup-shaped housing 10 comprises a knob 15, a labyrinth seal 14 and a bearing pin thirteenth

Der Noppen 15 ist als eine Montagehilfe am topfförmigen Gehäuse 10 angeordnet und wird zum einfachen Positionieren des Motorbereichs 18 am Pumpenbereich der Wasserpumpe 1 verwendet. Die Labyrinthdichtung 14 ist zum Abdichten des Motorbereichs 18 vom Pumpenbereich der Wasserpumpe 1 als eine Aussparung am topfförmigen Gehäuse 10 ausgebildet. Da die Wasserpumpe 1 im Kraftfahrzeug eingesetzt wird, deren Verbrennungsmotoren in einem Spritzgussverfahren hergestellt werden, können Rückstände vom Formsand in das Fördermedium gelangen. Der Formsand kann Restmagnetismus aufweisen der von dem magnetisch ausgeführtem Rotor 19 angezogen werden kann. Durch die Labyrinthdichtung 14 kann verhindert werden, dass das Fördermedium, das einen geringen Anteil an Formsand aufweisen kann, in den schmalen Spalt zwischen den topfförmigen Gehäuse 10 und den Rotor 19 gelangt, was zu einem Blockieren des Rotors 19 führen kann. Das Fördermedium in der Wasserpumpe 1 kann dabei ein Wasser/Glykol-Gemisch sein. Der Lagerbolzen 13 ist beispielsweise aus Edelstahl. Vor dem Spritzgießen des topfförmigen Gehäuses 10 wird der Lagerbolzen in dem Spritzgusswerkzeug mittig positioniert und anschließend mit dem thermoplastischen Kunststoff des topfförmigen Gehäuses 10 umspritzt. Dadurch ist der Lagerbolzen 13 fest im topfförmigen Gehäuse 10 der Wasserpumpe 1 befestigt.The nub 15 is arranged as an assembly aid on the cup-shaped housing 10 and is used for easy positioning of the motor region 18 at the pump region of the water pump 1. The labyrinth seal 14 is designed to seal off the motor region 18 from the pump region of the water pump 1 as a cutout on the cup-shaped housing 10. Since the water pump 1 is used in the motor vehicle, the internal combustion engines are produced in an injection molding process, residues from the molding sand can get into the fluid. The molding sand may have residual magnetism that can be attracted to the magnetically executed rotor 19. By the labyrinth seal 14 can be prevented that the medium, which may have a small amount of molding sand, in the narrow gap between the cup-shaped housing 10 and the rotor 19 passes, which can lead to a blocking of the rotor 19. The pumped medium in the water pump 1 can be a water / glycol mixture. The bearing pin 13 is made of stainless steel, for example. Before the injection molding of the cup-shaped housing 10 of the bearing pin is positioned centrally in the injection mold and then encapsulated with the thermoplastic material of the cup-shaped housing 10. As a result, the bearing pin 13 is firmly fixed in the cup-shaped housing 10 of the water pump 1.

Auf den Lagerbolzen 13 der Wasserpumpe 1 wird ein Flügelrad 11 mit einer Gleitlagerbuchse 12 drehbar gelagert Ferner wird das Flügelrad 11 mit der Gleitlagerbuchse 12 mithilfe des Lagerbolzen 13 in einer Aussparung 20 am topfförmigen Gehäuse 10 drehbar gelagert. Das Flügelrad 11 und die Gleitlagerbuchse 12 sind aus einem gleichen Grundmaterial einstückig oder mehrteilig ausgebildet. Das Grundmaterial umfasst vorzugsweise Polyamide (PA6), Polyphthalamide (PPA), teilkristalline, partiell aromatische Polyamide (PA6T/6l) oder Polyphenylsulfide (PPS). Ferner weist das Grundmaterial eine Hydrolysebeständigkeit gegenüber dem Fördermedium auf, so dass sich das Material beim Gebrauch nicht auflöst. Jedoch können auch andere hydrolysebeständige Materialien als Grundmaterial für das Flügelrad 11 und die Gleitlagerbuchse 12 verwendet werden.On the bearing pin 13 of the water pump 1, an impeller 11 is rotatably mounted with a plain bearing bushing 12 Further, the impeller 11 is rotatably mounted with the plain bearing bush 12 by means of the bearing pin 13 in a recess 20 on the cup-shaped housing 10. The impeller 11 and the plain bearing bush 12 are formed of a same base material in one piece or in several parts. The base material preferably comprises polyamides (PA6), polyphthalamides (PPA), partially crystalline, partially aromatic polyamides (PA6T / 6I) or polyphenylsulfides (PPS). Furthermore, the base material has a hydrolysis resistance to the pumped medium, so that the material is not in use dissolves. However, other materials resistant to hydrolysis may be used as the base material for the impeller 11 and the plain bearing bush 12.

Das Flügelrad 11 weist ein magnetisches Material, vorzugsweise Ferritpulver, auf. Vorzugsweise ist das magnetische Material in dem gesamten Bereich des Flügelrads 11 eingebracht. Alternativ können auch andere magnetische Partikel oder magnetische Materialien verwendet werden. Das Flügelrad 11 weist aufgrund des Magnetpulvers eine magnetische Eigenschaften auf, so dass das Flügelrad 11 als Rotor 19 der Wasserpumpe 1 verwendet werden kann. Des Weiteren weist die Gleitlagerbuchse 12 ein weiteres Material auf, das die Gleiteigenschaft der Gleitlagerbuchse 12 auf dem Lagerbolzen 13 erhöht. Insbesondere ist das weitere Material im Bereich einer Gleitfläche in dem Grundmaterial eingebettet, mit der die Gleitlagerbuchse 12 auf dem Lagerbolzen 13 drehbar gelagert ist Als weiteres Material kann beispielsweise Wachs und/oder Kohlepulver verwendet werden. Zur Verbesserung der Gleiteigenschaften der Gleitlagerbuchse 12 können jedoch auch andere Materialien verwendet werden, die sich dafür eignen.The impeller 11 comprises a magnetic material, preferably ferrite powder. Preferably, the magnetic material is introduced in the entire region of the impeller 11. Alternatively, other magnetic particles or magnetic materials may be used. The impeller 11 has magnetic properties due to the magnetic powder, so that the impeller 11 can be used as the rotor 19 of the water pump 1. Furthermore, the plain bearing bush 12 has a further material which increases the sliding property of the plain bearing bush 12 on the bearing pin 13. In particular, the further material is embedded in the region of a sliding surface in the base material, with which the slide bearing bushing 12 is rotatably mounted on the bearing pin 13. As a further material, for example wax and / or carbon powder can be used. To improve the sliding properties of the plain bearing bush 12, however, other materials can be used, which are suitable.

Das Flügelrad 11 und die Gleitlagerbuchse 12 werden in einem Spritzgussverfahren hergestellt. Dabei können das Flügelrad 11 und die Gleitlagerbuchse 12 in einem zweistufigen Spritzgussverfahren hergestellt werden. In einem ersten Spritzgussvorgang wird die Gleitlagerbuchse 12 gefertigt. Dabei wird in das Grundmaterial ein weiteres Material eingemischt, so dass ein Granulat für das Spritzgussverfahren entsteht. Anschließend wird das Granulat in einem Trichter einer Spritzgussmaschine gegeben, wobei das Granulat aus dem Trichter in einen Schneckengang eingezogen, zerteilt und geschert wird. Die dadurch entstehende Friktionswärme sorgt in Verbindung mit der von einem beheizten Zylinder zugeführten Wärme für eine relativ homogene Schmelze. Die Schmelze wird unter einem hohem Druck in das Spritzgusswerkzeug gespritzt. Bevor die Schmelze der Gleitlagerbuchse 12 vollständig erstarrt, wird in einem zweiten Spritzgussvorgang das Flügelrad 11 eingespritzt und mit der Gleitlagerbuchse 12 verschmolzen, so dass ein einstückiges Bauteil entsteht. Für das Granulat des Flügelrads 11 wird dabei das Grundmaterial mit einem magnetischen Material vermischt. Je nach Bedarf kann mehr oder weniger vom weiteren Material bzw. magnetischen Material in das Grundmaterial eingemischt werden. Alternativ kann das Spritzgussverfahren auch in einem einstufigen Spritzgussverfahren oder in einem anderen Ablauf erfolgen.The impeller 11 and the plain bearing bush 12 are manufactured in an injection molding process. In this case, the impeller 11 and the plain bearing bush 12 can be produced in a two-stage injection molding process. In a first injection molding process, the plain bearing bush 12 is manufactured. In this case, a further material is mixed into the base material, so that a granulate for the injection molding process is formed. Subsequently, the granules are placed in a funnel of an injection molding machine, wherein the granules are drawn from the hopper into a flight, divided and sheared. The resulting friction heat, in conjunction with the heat supplied by a heated cylinder, provides a relatively homogeneous melt. The melt is injected under high pressure into the injection mold. Before the melt of the plain bearing bush 12 completely solidifies, the impeller 11 is injected in a second injection molding process and fused with the plain bearing bush 12, so that a one-piece component is formed. For the granules of the impeller 11 while the base material is mixed with a magnetic material. Depending on requirements, more or less of the additional material or magnetic material can be mixed into the base material. Alternatively, you can the injection molding process also be carried out in a single-stage injection molding process or in another sequence.

Zwischen dem Lagerbolzen 13 und der Gleitlagerbuchse 12 ist eine enge Gleitpassung 16 vorhanden, die für ein minimales Lagerspiel sorgt Die enge Gleitpassung 16 weist eine Dicke von bis zu 0,08 mm über die gesamte Gleitfläche auf, dadurch können keine Verunreinigungen zwischen der Gleitlagerbuchse 12 und dem Lagerbolzen 13 eintreten. Ferner wird aufgrund der engen Gleitpassung 16 ein erhöhter Verschleiß durch eindringenden Formsand bei gleichzeitiger Schmierung durch Benetzung mit Fördermedium vermieden.Between the bearing pin 13 and the plain bearing bush 12 has a tight sliding fit 16 is provided, which ensures a minimal clearance The narrow sliding fit 16 has a thickness of up to 0.08 mm over the entire sliding surface, thereby no contamination between the plain bearing bush 12 and enter the bearing pin 13. Furthermore, due to the tight sliding fit 16, increased wear due to the penetration of molding sand while at the same time lubrication due to wetting with the conveying medium is avoided.

Zusätzlich zur engen Gleitpassung 16 kann auch, wie in Figur 2 gezeigt, ein Spülkanal 17 angeordnet sein. Der Spülkanal 17 ist in Form einer Nut in der Gleitlagerbuchse 12 angeordnet, damit Fördermittel oder Kühlwasser in die Gleitlagerung einfließen können. Mit dem Spülkanal 17 kann eine hydrostatische und/oder hydrodynamische Gleitlagerung realisiert werden, wobei das Fördermedium als Schmiermittel für die Gleitlagerung verwendet werden kann. Dies hat vor allem den Vorteil bei einem relativ reinen Fördermedium. Ferner kann aufgrund des Spülkanals 17 das Flügelrad 11 mit der Gleitlagerbuchse 12 schwimmend auf dem Lagerbolzen 13 gelagert werden. Dadurch wird die Reibung in der Lagerung erheblich reduziert.In addition to the tight sliding fit 16 can also, as in FIG. 2 shown, a flushing channel 17 may be arranged. The flushing channel 17 is arranged in the form of a groove in the plain bearing bush 12, so that funding or cooling water can flow into the plain bearing. With the flushing channel 17, a hydrostatic and / or hydrodynamic sliding bearing can be realized, wherein the conveying medium can be used as a lubricant for the sliding bearing. This has the advantage above all of a relatively pure pumped medium. Furthermore, due to the flushing channel 17, the impeller 11 can be mounted with the plain bearing bush 12 floating on the bearing pin 13. As a result, the friction in storage is significantly reduced.

Die Erfindung wird am Beispiel einer Wasserpumpe 1 dargestellt. Jedoch kann die Erfindung auch für andere Flüssigkeitspumpen mit einem anderen Fördermedium eingesetzt werden. Vorteilhaft ist dabei, dass das Flügelrad 11 und die Gleitlagerbuchse 12 aus einem gleichen Grundmaterial einstückig oder mehrteilig ausgebildet sind. Dadurch weisen das Flügelrad 11 und die Gleitlagerbuchse 12 annähernd gleiche Materialeigenschaften auf, so dass Rissbildungen durch innere Spannungen in den Bauteilen vermieden werden können. Ferner sind das Flügelrad 11 und die Gleitlagerbuchse 12 aus einem hydrolysebeständigen Material ausgebildet.The invention is illustrated using the example of a water pump 1. However, the invention can also be used for other fluid pumps with another fluid. It is advantageous that the impeller 11 and the plain bearing bush 12 are formed from a same base material in one piece or in several parts. As a result, the impeller 11 and the plain bearing bush 12 have approximately the same material properties, so that cracking due to internal stresses in the components can be avoided. Further, the impeller 11 and the plain bearing bush 12 are formed of a hydrolysis resistant material.

Claims (13)

  1. Fluid pump, in particular water pump (1), with a bearing pin (13) on which an impeller (11) with a plain bearing bush (12) is rotatably mounted, characterized in that the impeller (11) and the plain bearing bush (12) are formed from at least one identical basic material as a single piece or in a number of parts, a further material which improves the sliding properties of the plain bearing bush (12) on the bearing pin (13) being mixed into the basic material of the plain bearing bush (12), and a magnetic material being added to the basic material of the impeller (11).
  2. Fluid pump according to Claim 1, characterized in that the further material comprises wax and/or carbon powder.
  3. Fluid pump according to Claim 1, characterized in that the basic material contains polyamides, polyphthalamides, partially crystalline, partially aromatic polyamides or polyphenylsulfides.
  4. Fluid pump according to one of Claims 1 to 3, characterized in that the impeller (11) contains a magnetic material, preferably ferrite powder.
  5. Fluid pump according to Claim 1, characterized in that the bearing pin (13) is formed from special steel.
  6. Fluid pump according to one of Claims 1 to 5, characterized in that a rinsing channel (17) in the form of a groove is arranged in the plain bearing bush (12).
  7. Fluid pump according to one of Claims 1 to 6, characterized in that a sliding surface a sliding fit is provided between the bearing pin (13) and the plain bearing bush (12), the sliding fit having a thickness of up to 0.08 mm over and beyond the entire sliding surface.
  8. Fluid pump according to one of Claims 1 to 7, characterized in that a labyrinth seal (14) is arranged on the fluid pump (1).
  9. Method for forming a rotor of a fluid pump, in particular water pump (1), with a bearing pin (13) on which an impeller (11) with a plain bearing bush (12) is rotatably mounted, characterized in that the impeller (11) and the plain bearing bush (12) are formed from an identical basic material as a single piece or in a number of parts, a further material which improves the sliding properties of the plain bearing bush (12) on the bearing pin (13) being mixed into the basic material of the plain bearing bush (12), and a magnetic material being added to the basic material of the impeller (11).
  10. Method according to Claim 9, characterized in that the impeller (11) and the plain bearing bush (12) are produced in an injection molding process.
  11. Method according to Claim 9, characterized in that wax and/or carbon powder are/is used as the further material.
  12. Method according to Claim 9, characterized in that polyamides, partially crystalline, partially aromatic polyamides or polyphenylsulfides are used as the basic material.
  13. Method according to Claim 9, characterized in that a magnetic material, preferably ferrite powder, is embedded into the basic material of the impeller (11).
EP10730450.3A 2009-08-06 2010-07-05 Fluid pump Active EP2462351B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009028310A DE102009028310A1 (en) 2009-08-06 2009-08-06 liquid pump
PCT/EP2010/059522 WO2011015413A2 (en) 2009-08-06 2010-07-05 Fluid pump

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EP2462351A2 EP2462351A2 (en) 2012-06-13
EP2462351B1 true EP2462351B1 (en) 2017-06-07
EP2462351B2 EP2462351B2 (en) 2020-04-29

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JP (1) JP5787887B2 (en)
CN (1) CN102472291A (en)
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ES (1) ES2639367T3 (en)
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11353063B2 (en) * 2018-05-23 2022-06-07 Diamet Corporation Sintered bearing

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013004339A1 (en) * 2013-03-14 2014-09-18 Wilo Se Pump unit with a one-piece bearing unit
CN104747458A (en) * 2013-12-27 2015-07-01 博西华电器（江苏）有限公司 Liquid draining pump and household appliance with pump
CN104265679A (en) * 2014-08-12 2015-01-07 苏州通力电气有限公司 Water pump impeller
CN105715559A (en) * 2014-12-05 2016-06-29 杭州三花研究院有限公司 Electronic pump
EP3109915B1 (en) 2015-06-23 2021-07-21 Novaled GmbH Organic light emitting device comprising polar matrix and metal dopant
CN106989049A (en) * 2017-04-05 2017-07-28 横店集团东磁股份有限公司 A kind of graphite bearing for cooling down magnetic water pump
DE102018204503A1 (en) 2018-03-23 2019-09-26 Robert Bosch Gmbh liquid pump
DE102018204499A1 (en) 2018-03-23 2019-09-26 Robert Bosch Gmbh Liquid pump, in particular coolant pump
CN110319048A (en) * 2019-07-09 2019-10-11 横店集团东磁股份有限公司 A kind of high-strength vehicle water pump rotor and its manufacturing method

Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB979009A (en) 1962-10-18 1965-01-01 Hevent Developments Ltd Improvements in or relating to glandless motor driven circulating pumps
US4512724A (en) 1983-03-17 1985-04-23 Metaframe, Inc. Electric pump for use in filtering system of a tropical fish tank or the like
US4722661A (en) 1985-10-09 1988-02-02 Ngk Insulators, Ltd. Magnetic-drive centrifugal pump
DE3706970A1 (en) 1987-03-04 1988-09-15 Klifa Gmbh & Co Pump impeller for a water pump, and method for manufacturing it
JPH02252998A (en) 1989-03-27 1990-10-11 Kunimori Kagaku:Kk Manufacture of impeller
EP0416237A1 (en) 1989-07-08 1991-03-13 Alcatel SEL Aktiengesellschaft Pump for liquids
DE9214418U1 (en) 1992-10-24 1994-05-05 Papst-Motoren GmbH & Co. KG, 78112 St Georgen bearings
US6264440B1 (en) 1998-10-29 2001-07-24 Innovative Mag-Drive, L.L.C. Centrifugal pump having an axial thrust balancing system
US20010033800A1 (en) 2000-04-25 2001-10-25 Aisan Kogyo Kabushiki Kaisha Magnetic coupling pump
JP2002155884A (en) 2000-11-16 2002-05-31 Yamada Seisakusho Co Ltd Impeller supporting structure of magnetic pump
US6443710B1 (en) 1999-08-10 2002-09-03 Iwaki Co., Ltd. Magnetic pump
US20050281498A1 (en) 2004-06-22 2005-12-22 Takumi Hayashi Slide bearing for cooling water circulation pump in fuel cell
JP2006316652A (en) 2005-05-11 2006-11-24 Asmo Co Ltd Fluid pump
US20070177993A1 (en) 2006-01-31 2007-08-02 Asian Kogyo Kabushiki Kaisha Electric pump
JP2007205246A (en) 2006-02-01 2007-08-16 Toyota Motor Corp Water pump and hybrid vehicle
JP2007211691A (en) 2006-02-09 2007-08-23 Toyota Motor Corp Water pump
DE102006021244A1 (en) 2006-04-28 2007-11-08 Bühler Motor GmbH Permanent magnet rotor

Patent Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB979009A (en) 1962-10-18 1965-01-01 Hevent Developments Ltd Improvements in or relating to glandless motor driven circulating pumps
US4512724A (en) 1983-03-17 1985-04-23 Metaframe, Inc. Electric pump for use in filtering system of a tropical fish tank or the like
US4722661A (en) 1985-10-09 1988-02-02 Ngk Insulators, Ltd. Magnetic-drive centrifugal pump
DE3706970A1 (en) 1987-03-04 1988-09-15 Klifa Gmbh & Co Pump impeller for a water pump, and method for manufacturing it
JPH02252998A (en) 1989-03-27 1990-10-11 Kunimori Kagaku:Kk Manufacture of impeller
EP0416237A1 (en) 1989-07-08 1991-03-13 Alcatel SEL Aktiengesellschaft Pump for liquids
DE9214418U1 (en) 1992-10-24 1994-05-05 Papst-Motoren GmbH & Co. KG, 78112 St Georgen bearings
US6264440B1 (en) 1998-10-29 2001-07-24 Innovative Mag-Drive, L.L.C. Centrifugal pump having an axial thrust balancing system
US6443710B1 (en) 1999-08-10 2002-09-03 Iwaki Co., Ltd. Magnetic pump
US20010033800A1 (en) 2000-04-25 2001-10-25 Aisan Kogyo Kabushiki Kaisha Magnetic coupling pump
JP2002155884A (en) 2000-11-16 2002-05-31 Yamada Seisakusho Co Ltd Impeller supporting structure of magnetic pump
US20050281498A1 (en) 2004-06-22 2005-12-22 Takumi Hayashi Slide bearing for cooling water circulation pump in fuel cell
JP2006009819A (en) 2004-06-22 2006-01-12 Ntn Corp Sliding bearing for cooling water circulation pump of fuel cell
JP2006316652A (en) 2005-05-11 2006-11-24 Asmo Co Ltd Fluid pump
US20070177993A1 (en) 2006-01-31 2007-08-02 Asian Kogyo Kabushiki Kaisha Electric pump
JP2007205190A (en) 2006-01-31 2007-08-16 Aisan Ind Co Ltd Electric pump
JP2007205246A (en) 2006-02-01 2007-08-16 Toyota Motor Corp Water pump and hybrid vehicle
JP2007211691A (en) 2006-02-09 2007-08-23 Toyota Motor Corp Water pump
DE102006021244A1 (en) 2006-04-28 2007-11-08 Bühler Motor GmbH Permanent magnet rotor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11353063B2 (en) * 2018-05-23 2022-06-07 Diamet Corporation Sintered bearing

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US8967970B2 (en) 2015-03-03
WO2011015413A2 (en) 2011-02-10
EP2462351B2 (en) 2020-04-29
DE102009028310A1 (en) 2011-02-10
EP2462351A2 (en) 2012-06-13
JP5787887B2 (en) 2015-09-30
IN2012DN00472A (en) 2015-06-05
US20120195754A1 (en) 2012-08-02
JP2013501188A (en) 2013-01-10
WO2011015413A3 (en) 2011-03-31
CN102472291A (en) 2012-05-23
ES2639367T3 (en) 2017-10-26

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