EP3289221B1 - Pompe à fluide - Google Patents

Pompe à fluide Download PDF

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Publication number
EP3289221B1
EP3289221B1 EP16719085.9A EP16719085A EP3289221B1 EP 3289221 B1 EP3289221 B1 EP 3289221B1 EP 16719085 A EP16719085 A EP 16719085A EP 3289221 B1 EP3289221 B1 EP 3289221B1
Authority
EP
European Patent Office
Prior art keywords
rotor
pump
combination
stator
fluid
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
EP16719085.9A
Other languages
German (de)
English (en)
Other versions
EP3289221A1 (fr
Inventor
Nils BORNEMANN
Stefan TILLER
Antonio Casellas
Ümit Aydin
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.)
GKN Powder Metallurgy Engineering GmbH
Original Assignee
GKN Sinter Metals Engineering GmbH
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Publication date
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Publication of EP3289221A1 publication Critical patent/EP3289221A1/fr
Application granted granted Critical
Publication of EP3289221B1 publication Critical patent/EP3289221B1/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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/102—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member the two members rotating simultaneously around their respective axes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/008—Prime movers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/40—Electric motor

Definitions

  • the present invention relates to a fluid pump which is driven by an electric motor, a pump rotor being coupled to the electric motor.
  • WO 2006/021616 A1 is an electric machine with an axial electric motor.
  • a rotor of the electric machine is arranged between two laterally arranged stators and has guide elements along its circumference that are embedded in a non-ferromagnetic material of the rotor.
  • the object of the present invention is to provide a particularly leak-proof fluid machine that can safely transport different media, in particular aggressive media.
  • a fluid pump is proposed, driven by an electric motor which is coupled to a pump rotor of the fluid pump, the electric motor being an axial flux electric motor, the electric motor rotor of which is also the pump rotor and the pump rotor and the electric motor rotor housed in a common housing are, in which the pump rotor and the electric motor rotor rotates integrated like a disk as a combination rotor, the common housing having a fluid inlet and a fluid outlet to the combination rotor.
  • a pump chamber and magnets of the electric motor that are axially aligned to the axis of rotation are arranged. This allows the formation of field lines in the axial direction, so that a torque can be impressed on the combination rotor.
  • a multiplicity of axially aligned magnets are distributed along a circumference of the combination rotor in the combination rotor.
  • the magnets can be close to or close to an outer circumference be arranged on an inner circumference of the combination rotor.
  • soft magnetic elements can also be used. Therefore, if magnets are used in the following, the relevant explanations also apply to the use of soft magnetic elements, such as those used in a reluctance motor, for example.
  • the magnets or soft magnetic elements can have different geometries. They can be shaped as cylindrical disks, as pie-shaped sections or in any other geometry. These can also result in a closed ring which forms part of the combination rotor.
  • At least one stator of the electric motor is arranged at the end of the combination rotor, cores of the stator aligned axially parallel to the rotor axis of rotation having at least in part a soft magnetic material.
  • a multiplicity of cores, preferably at least five cores, are arranged in an axially aligned manner distributed around the circumference.
  • a first stator of the axial flux motor frames the combination rotor on a first end face and a second stator of the axial flux motor frames the combination rotor on a second end face of the common housing opposite the first end face.
  • a further development (not according to the invention) provides that cores of the first stator and of the second stator lie exactly opposite one another, axially parallel to the rotor axis of rotation.
  • This arrangement has the advantage, for example, of the direct amplification of the respective acting electromagnetic forces.
  • An embodiment according to the invention provides that the cores of the first stator and the second stator are offset from one another, axially parallel to the rotor axis of rotation. In this way, for example, field lines distributed axially around the circumference can be generated.
  • the common housing has an amagnetic material at least in an area between the rotating combination rotor and the cores of the stator. As a result, the necessary formation of the electromagnetic field for generating a torque on the combination rotor is not or only slightly disturbed.
  • a pump chamber is closed off in the common housing and a fluid inflow and / or a fluid outflow to the pump chamber is preferably carried out axially along the axis of rotation, particularly preferably by the electric motor.
  • the combination rotor has a co-rotating pump wheel, a shaft of the combination rotor being arranged and mounted within the common housing.
  • the combination rotor rotates about an axis of rotation in the common housing, a co-rotating pump wheel being seated on the axis of rotation.
  • the combination rotor and the pump wheel can have the same axis of rotation or each use different axes of rotation arranged parallel to one another.
  • Another embodiment again provides that a first and a second end of the shaft or the axis of rotation of the combination rotor each end in the common housing.
  • the common housing preferably has only static seals, but no seal due to a relative movement between a fixed part of the common housing and a component that is moved outward and moved for it. Rather, a component that is movable relative to the common housing, such as a shaft, can be dispensed with.
  • An axle for the combination rotor can, for example, be guided out of the common housing on at least one side. If an aggressive fluid is to be conveyed by means of the fluid pump, for example dispensing with a dynamically stressed seal allows a longer service life of the fluid pump.
  • a further development of the method provides that the cores of the stator are pressed and manufactured from a soft magnetic material.
  • the common housing is also produced by means of a cup-shaped first component and a side cover to be attached to it as the second component.
  • a bearing for a shaft of the combination rotor can be provided in a base of the first component, the counterpart of which is arranged, for example, in the side cover.
  • Axial bearings, but also axial / radial bearings, in particular roller bearings, can preferably be used. It is preferred to use bearings that have been lubricated for life.
  • Fig. 1 shows a first view of a fluid pump 1 in an assembled state.
  • An inner housing 2 is connected to a first and a second side cover 3, 4, preferably connected releasably in a repeatable manner. This can be done, for example, by screwing through holes 5. These are distributed around the circumference, which enables a pump chamber in the inner housing 2 to be sealed off.
  • the first and the second side covers 3, 4 have stator cores 6 which are each aligned axially with respect to a rotor axis in the interior of the inner housing 2.
  • the stator cores 6 are each wound with a winding so that an electromagnetic field can be generated.
  • a circuit board can be arranged on a cover 7, by means of which the respective windings can be interconnected and controlled.
  • a liquid can be fed centrally via a feed as a fluid inflow 8.
  • a fluid is supplied or discharged from the side.
  • Fig. 2 shows in an exemplary embodiment an inner housing 2 with an internally arranged Combination rotor 9.
  • the combination rotor rotates in the inner housing 2.
  • the combination rotor 9 can have recesses 10 into which, for example, magnets or soft magnetic elements can be inserted.
  • a pump chamber 11 is located in an interior of the combination rotor 9.
  • a gerotor 12 is located in the pump chamber.
  • a gerotor instead of a gerotor as a fluid pump, an impeller pump, a vane pump, a P-rotor, a roller cell pump, a rotary vane pump or a radial piston pump can also be used in the inner housing 2 be arranged.
  • the respective pump wheel can either be part of the combination rotor or, as in the gerotor shown, be arranged on an axis and therefore also rotate.
  • permanent magnets as an axial flux electric motor, a permanently excited synchronous or brushless direct current motor, abbreviated BLDC, can be formed, while, for example, a reluctance motor can be created as an electric motor in an axial design using soft magnetic elements.
  • a stator which is arranged here because of its position on the back of the inner housing 2 shown, can have a soft magnetic material, for example a soft magnetic composite, abbreviated to SMC, or a combination of electrical steel sheets and SMC.
  • FIG. 11 shows a sectional view of the fluid pump 1 from FIG Fig. 1 in a sectional view.
  • the inner housing 2 together with the respective first and second side covers 3, 4 form a sealed, common housing 14 in which a pump wheel is driven by means of the combination rotor 9.
  • the illustration shows the disk-like geometry of the combination rotor 9.
  • the common housing 14 has the axially arranged fluid inflow 8 and a fluid outflow 15 arranged axially opposite.
  • the fluid inflow 8 can lead a fluid to the pump wheel, in this case to the gerotor, by means of a lateral recess in the second side cover.
  • the fluid outflow 15 can open into the pump space opposite or, as in the case of some types of pumps, offset for this purpose. Radial fluid guidance is also possible.
  • Fig. 4 shows the second side cover 4 from Fig. 1 with attached connection piece 16 from a side perspective.
  • the connecting pieces 16 allow, for example, the screwing or fastening of the axial pump formed in this way in an installation space, for example a car engine compartment.
  • Fig. 5 shows the second side cover 4 from Fig. 1 in another perspective.
  • Two orifices 17 are shown, through which fluid can flow to and from the pump chamber.
  • At least one non-magnetic material is provided as the material in a region of the side cover which is opposite the stator cores (not shown).
  • the area that is swept over by the combination rotor is made of non-magnetic material.
  • the non-magnetic material is preferably also electrically non-conductive.
  • an amagnetic metal can also be used.
  • the side cover can be manufactured, for example, as an injection-molded part or as a sintered component. Different materials can also be used.
  • One embodiment provides that the side cover 4 is produced together with the stator cores.
  • a sintering process can be used, for example from the DE 10 2009 042 598 A1 and the JP H08-134509 A is apparent, to which reference is made in this regard in the context of the disclosure. While from the DE 10 2009 042 598 A1 and the JP H08-134509 A shows how, for example, the same or different sintered materials can be produced with one another, goes from the DE 10 2009 042 603 A1 shows how prefabricated components can be precisely incorporated into a component to be sintered.
  • stator with, for example, prefabricated stator cores made of, for example, sintered material, as well as when using electrical steel sheets as soft magnetic elements in the combination rotor to manufacture a reluctance motor.
  • Magnets can also be introduced in this way, whereby these are preferably only inserted after sintering due to the temperatures during sintering.
  • Fig. 6 shows in an exemplary embodiment a second version of a further, third side cover 18.
  • the third side cover 18 has, for example, soft magnetic poles 19, which are preferably made from soft magnetic composites. For example, as shown, these can extend to a surface and thus also form a border of the inner housing.
  • soft magnetic poles 19 which are preferably made from soft magnetic composites.
  • these can extend to a surface and thus also form a border of the inner housing.
  • Such a structure has the advantage that the side cover can otherwise be made from non-magnetic metal, for example from metallic powder by means of a sintering process.
  • the proposed fluid pump can be used in different areas of application get used. Liquids of the most varied types such as Newtonian fluids or Bingham fluids as well as gases can be transported. The use can include a wide variety of areas such as the chemical industry, the food industry, use in machines and systems or in the vehicle, aircraft and shipping sectors.
  • the fluids can include alkalis or acids, have a corrosive effect, be cooled or heated.
  • Oil pump in an internal combustion engine Circulation pump, for example in a cooling circuit or in the heating area; as a circulation pump, for example in drinking water systems; Lubricant pump; as a hydraulic clutch actuator; in fuel delivery; in the case of the injection system in the area of the common rail in the case of gasoline or diesel direct injection; as an air conditioning compressor; as a vacuum pump; as a servo pump, for example in the area of power steering assistance; in the brake booster; in transmissions, in particular automatic transmissions, for example for cooling, for maintaining a pressure, as a suction pump; in the field of aquariums; with PC and server cooling such as water cooling; in medical technology, for example in a dialysis machine, an infusion pump, an insulin pump; in exhaust gas aftertreatment, for example when adding urea; as a vent pump; with brake boosters, when filling pneumatic actuators; with active trolleys; in windshield and headlight cleaning systems; in washing facilities; as a submersible pump; as a drive

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Rotary Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (11)

  1. Pompe à fluide (1), entraînée par un moteur électrique qui est accouplé à un rotor de pompe de la pompe à fluide, le moteur électrique étant un moteur électrique à flux axial dont le rotor de moteur électrique est également le rotor de pompe et le rotor de pompe et le rotor de moteur électrique étant logés dans un boîtier commun (2) dans lequel le rotor de pompe et le rotor de moteur électrique tournent en étant intégrés sous la forme d'un disque servant de rotor combiné (9), le boîtier commun (2) comportant une entrée de fluide et une sortie de fluide (8, 15) menant vers le rotor combiné (9), un premier stator du moteur à flux axial encadrant le rotor combiné sur un premier côté frontal et un deuxième stator du moteur à flux axial encadrant le rotor combiné sur un deuxième côté frontal, opposé au premier côté frontal, du boîtier commun, caractérisée en ce que des noyaux (6) du premier stator et du deuxième stator sont opposés l'un à l'autre en étant décalés l'un de l'autre parallèlement à l'axe du rotor.
  2. Pompe à fluide (1) selon la revendication 1, caractérisée en ce qu'une chambre de pompe (11) et des aimants ou éléments magnétiques doux, orientés axialement à l'axe de rotation, du moteur électrique sont disposés à partir d'un axe de rotation du rotor combiné (9), lorsque l'on observe dans une direction radiale.
  3. Pompe à fluide (1) selon la revendication 1 ou 2, caractérisée en ce qu'une multitude d'aimants ou d'éléments magnétiques doux orientés axialement sont répartis dans le rotor combiné (9) le long d'une circonférence du rotor combiné (9).
  4. Pompe à fluide (1) selon l'une des revendications précédentes, caractérisée en ce que les noyaux (6) du stator, qui sont orientés parallèlement à l'axe de rotation du rotor, comportent au moins en partie un matériau magnétique doux.
  5. Pompe à fluide (1) selon la revendication 4, caractérisée en ce que le boîtier commun (2) comporte un matériau amagnétique au moins dans une zone située entre le rotor combiné rotatif (9) et les noyaux (6) du stator.
  6. Pompe à fluide (1) selon l'une des revendications précédentes, caractérisée en ce qu'une chambre de pompe (11) est fermée dans le boîtier commun (2) et l'entrée de fluide et/ou la sortie de fluide (8, 15) menant à la chambre de pompe (11) sont effectuées de préférence axialement le long de l'axe de rotation, de manière particulièrement préférée à travers le moteur électrique.
  7. Pompe à fluide (1) selon l'une des revendications précédentes, caractérisée en ce que le rotor combiné (9) comporte une roue de pompe corotative, un arbre du rotor combiné (9) étant disposé et logé à l'intérieur du boîtier commun (2).
  8. Pompe à fluide (1) selon l'une des revendications précédentes 1 à 7, caractérisée en ce que le rotor combiné (9) tourne sur un axe de rotation dans le boîtier commun (2), une roue de pompe corotative siégeant sur l'axe de rotation.
  9. Pompe à fluide (1) selon l'une des revendications précédentes, caractérisée en ce qu'une première et une deuxième extrémité de l'arbre ou de l'axe de rotation du rotor combiné (9) se terminent chacune dans le boîtier commun (2).
  10. Procédé de réalisation d'une pompe à fluide (1), de préférence une pompe à fluide selon l'une des revendications 1 à 9, le procédé comprenant les étapes suivantes:
    - fabriquer un rotor combiné (9) sous la forme d'un rotor de pompe et de moteur électrique en forme de disque avec disposition axiale d'aimants ou d'éléments magnétiques doux dans le rotor combiné (9),
    - insérer le rotor combiné (9) dans une bague extérieure,
    - insérer un arbre ou un axe,
    - fixer latéralement au moins une paroi latérale à la bague extérieure pour étanchéifier fluidiquement le rotor combiné (9) en logeant une extrémité de l'arbre ou de l'axe dans la paroi latérale,
    - fixer latéralement au moins un premier et un deuxième stator d'un moteur électrique à la paroi latérale d'entraînement du rotor combiné (9) dans le boîtier commun (2) formé au moyen d'au moins la bague extérieure et de la paroi latérale, des noyaux (6) du premier et du deuxième stator étant disposés parallèlement à l'axe de rotation du rotor combiné (9) et les noyaux (6) du premier stator et du deuxième stator étant opposés l'un à l'autre en étant décalés l'un de l'autre parallèlement à l'axe de rotation du rotor.
  11. Procédé selon la revendication 10, caractérisé en ce que les noyaux (6) du stator sont pressés et fabriqués à partir d'un matériau magnétique doux.
EP16719085.9A 2015-04-28 2016-04-28 Pompe à fluide Active EP3289221B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015207748.9A DE102015207748A1 (de) 2015-04-28 2015-04-28 Fluidpumpe
PCT/EP2016/059549 WO2016174164A1 (fr) 2015-04-28 2016-04-28 Pompe à fluide

Publications (2)

Publication Number Publication Date
EP3289221A1 EP3289221A1 (fr) 2018-03-07
EP3289221B1 true EP3289221B1 (fr) 2021-06-23

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EP16719085.9A Active EP3289221B1 (fr) 2015-04-28 2016-04-28 Pompe à fluide

Country Status (5)

Country Link
US (1) US11078904B2 (fr)
EP (1) EP3289221B1 (fr)
CN (1) CN107787409B (fr)
DE (1) DE102015207748A1 (fr)
WO (1) WO2016174164A1 (fr)

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EP3389063A1 (fr) * 2017-04-13 2018-10-17 Comet AG Condensateur variable sous vide et procédé de refroidissement
DE102017222754A1 (de) 2017-12-14 2019-06-19 Magna Powertrain Bad Homburg GmbH Gerotor Pumpe
DE102017223715A1 (de) 2017-12-22 2019-06-27 Magna Powertrain Bad Homburg GmbH Gerotorpumpe und Verfahren zur Herstellung einer solchen
CN111306031A (zh) * 2018-12-12 2020-06-19 杭州三花研究院有限公司 电动泵
CN111725934B (zh) * 2019-03-22 2024-04-23 广东德昌电机有限公司 流体泵
FR3102510B1 (fr) * 2019-10-25 2021-11-12 Safran Helicopter Engines Turbomachine munie d’une pompe électromagnétique à flux magnétique axial
FR3106625B1 (fr) * 2020-01-27 2022-11-04 Safran Helicopter Engines Circuit d’alimentation en carburant d’un moteur d’aéronef
US20210320578A1 (en) 2020-04-08 2021-10-14 Halliburton Energy Services, Inc. Axial Flux Submersible Electric Motor
EP3957822B1 (fr) 2020-08-20 2023-12-13 GKN Sinter Metals Engineering GmbH Agencement de pompe
EP3957823B1 (fr) 2020-08-20 2023-11-08 GKN Sinter Metals Engineering GmbH Agencement de pompe
CN216665906U (zh) * 2021-11-17 2022-06-03 江门市君顺实业有限公司 一种模块化潜水齿轮泵及皂液器

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Also Published As

Publication number Publication date
US11078904B2 (en) 2021-08-03
US20180128268A1 (en) 2018-05-10
DE102015207748A1 (de) 2016-11-03
CN107787409B (zh) 2020-07-03
CN107787409A (zh) 2018-03-09
WO2016174164A1 (fr) 2016-11-03
EP3289221A1 (fr) 2018-03-07

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