EP2999888A2 - Pump unit - Google Patents

Pump unit

Info

Publication number
EP2999888A2
EP2999888A2 EP14726905.4A EP14726905A EP2999888A2 EP 2999888 A2 EP2999888 A2 EP 2999888A2 EP 14726905 A EP14726905 A EP 14726905A EP 2999888 A2 EP2999888 A2 EP 2999888A2
Authority
EP
European Patent Office
Prior art keywords
drive shaft
rotor
stator
delivery unit
magnets
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.)
Withdrawn
Application number
EP14726905.4A
Other languages
German (de)
French (fr)
Inventor
Sando Kunath
Oliver Laforsch
Dieter Amesoeder
Ingo Nowitzky
Marian Kacmar
Evgenij Skrynski
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2999888A2 publication Critical patent/EP2999888A2/en
Withdrawn legal-status Critical Current

Links

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
    • F04C3/00—Rotary-piston machines or pumps, with non-parallel axes of movement of co-operating members, e.g. of screw type
    • F04C3/06—Rotary-piston machines or pumps, with non-parallel axes of movement of co-operating members, e.g. of screw type the axes being arranged otherwise than at an angle of 90 degrees
    • F04C3/08—Rotary-piston machines or pumps, with non-parallel axes of movement of co-operating members, e.g. of screw type the axes being arranged otherwise than at an angle of 90 degrees of intermeshing engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • 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
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • F04C11/008—Enclosed motor pump units
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/278—Surface mounted magnets; Inset magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
    • H02K5/128—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas using air-gap sleeves or air-gap discs
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08—Structural association with bearings
    • H02K7/086—Structural association with bearings radially supporting the rotor around a fixed spindle; radially supporting the rotor directly
    • H02K7/088—Structural association with bearings radially supporting the rotor around a fixed spindle; radially supporting the rotor directly radially supporting the rotor directly
    • 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
    • F04C2240/60—Shafts

Definitions

  • Workrooms are formed, which can be filled via an entrance and emptied via an exit.
  • the disadvantage is that the delivery unit has a comparatively large axial length, since the drive of the delivery unit is arranged at a side facing away from the rotor end of the drive shaft.
  • the delivery unit according to the invention with the characterizing features of the main claim has the advantage that the axial length of the delivery unit is significantly shortened by the drive shaft is surrounded by a stator and magnets are provided on the drive shaft, which interact magnetically with the stator. Due to the inventive design, the drive shaft is designed as an armature of an electrical machine. The function of the armature is integrated in this way in the drive shaft. The number of required components is thus reduced.
  • the measures listed in the dependent claims are advantageous
  • the drive shaft has at least one pocket or recess for receiving the magnets, since the magnets in this way in the drive shaft are flush, so not above, integrated. It is advantageous if the magnets are arranged on the drive shaft with respect to the stator and in the direction of the drive axis such eccentric that the drive shaft is pressed with a predetermined magnetic force against the rotor, since the drive shaft and the rotor in this way with a constant magnetic force constantly is pressed against the teeth of the housing. As a result, the delivery unit can be started better when switching on the electric motor. In other words, the drive shaft and the rotor when turning on the electric motor can be turned on easier.
  • the magnets are permanent magnets, since in this way a permanent-magnet electric machine is formed.
  • the drive shaft is encased in the region of the magnets of a cylinder, since the magnets are encapsulated in this way and protected from the fluid of the delivery unit.
  • a shaft bearing for supporting the drive shaft is provided on each end face of the stator, since the drive shaft is mounted precisely in this way. It is also advantageous if the shaft bearings are designed as plain bearings, since plain bearings are particularly robust and inexpensive to implement.
  • the shaft bearings are provided on a disk-shaped or annular component. It is also advantageous if the shaft bearings are molded with a plastic to the stator, since the shaft bearings on this Way particularly inexpensive to implement and the function of the shaft bearing is integrated into the plastic of the gating.
  • the drawing shows in section an inventive delivery unit.
  • the delivery unit for example a pump or a compressor, comprises a drive shaft 1, which drives a rotor 2, which is rotatably arranged in a housing 3.
  • the drive shaft 1 has at its end facing the rotor 2 a cooperating with the rotor 2 inclined slip plane 1.1, which is for example formed on a shoulder 4 of the drive shaft 1 and the rotor 2 with its rotor axis 5 about a drive shaft 6 of the drive shaft 1 can tumble.
  • the rotor 2 has on its side facing the drive shaft 1 one with the oblique
  • the toothing 9 of the rotor 2 and the toothing 10 of the housing 3 is designed, for example, as a cycloidal toothing, but may also be a different toothing.
  • the delivery unit works according to the displacement principle, so that the fluid is sucked in self-priming via the input 12 into the working chambers 11 and discharged from the latter via the output 13.
  • the drive shaft 1 has a through-passage 14 to transport fluid from the inlet 12 into the working spaces 11 or out of these to the outlet 13. Which opening 12, 13 of the Delivery unit is input or output, depends on the direction of rotation of the rotor.
  • the drive shaft 1 is at least partially surrounded by a stator 15 and that on the drive shaft 1 magnets 16 are provided which cooperate magnetically with the stator 15.
  • the drive shaft 1 forms an anchor of a
  • Drive axle 6, is shortened.
  • the magnets 16 are arranged centrally, for example, with respect to the stator 15 and in the direction of the drive axis 6.
  • Direction of the drive shaft 6 can be arranged eccentrically such that the drive shaft 1 is pressed against the rotor 2 with a predetermined magnetic force.
  • the magnets 16 are arranged offset to the drive shaft 1 relative to a central arrangement with respect to the stator 15 in the direction away from the rotor 2.
  • the stator 15 is formed for example by a package of stacked laminations of so-called electrical steel.
  • At least one pocket or recess or at least one shoulder 17 for receiving the magnets 16 is provided on the drive shaft 1, for example.
  • the at least one pocket or recess 16 may be designed to be open or closed radially outward with respect to the drive axle 6.
  • the magnets 16 are
  • Magnets 16 may be individual magnets or be formed on a single ring, is embedded in the magnetic powder.
  • the magnetic ring may be made of a plastic as the base material in which the magnetic powder is distributed.
  • the drive shaft 1 can be covered in the region of the magnets 16 by a cup-shaped or cylindrical casing 18, which may also be a coating.
  • the jacket 18 is made of plastic, for example, and protects the magnets 16 against the fluid of the delivery unit and / or fixes them in the at least one pocket or recess 17.
  • a shaft bearing 20 or a receptacle for a shaft bearing 20 is provided on each end face of the stator 15.
  • the shaft bearing 20 is formed for example as a plain bearing.
  • the shaft bearings 20 are each provided on a disk-shaped or annular component 19, which abuts, for example, on the end faces of the stator 15.
  • the component 19 may be sharpened directly to the stator 15.
  • the component 19 has a passage opening 21 for the drive shaft 1.
  • the shaft bearing 20 may be arranged as a separate component, for example as a plain bearing bush.
  • the passage opening 21 can also form the sliding bearing itself.
  • the stator 15 has stator teeth 24 on its inner side facing the drive shaft 1, on each of which a stator winding 25 is provided, wherein stator slots 26 are formed between the stator teeth 25.
  • the stator 26 can with
  • stator 15 Be filled with plastic, for example, such that the components 19 are integrally connected by the plastic.
  • bobbin 27 are provided which receive the stator winding 25 and electrically isolate them from the stator 15.
  • stator 15 component 19 may be made in one piece in an injection process.
  • the plastic may also be provided in sections on the outer circumference of the stator 15, for example, as a web 30, and connect the disc-shaped or annular components 19 together.
  • the housing 3 comprises a hollow cylindrical or pot-shaped
  • One of the covers 3.2.3.3 could also be designed as the bottom of a cup-shaped housing section 3.1.

Landscapes

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

Abstract

Pump units are known that have a drive shaft and a rotor, which is driven by the drive shaft and is arranged rotatably in a housing, the drive shaft having an oblique sliding plane, which interacts with the rotor and allows the rotor to nutate with the rotor axis thereof about a drive axis of the drive shaft, the rotor having a set of teeth on the end face of the rotor facing away from the drive shaft, said teeth meshing with a set of teeth formed on a housing of the pump unit, working spaces being formed between the teeth of the rotor and the teeth of the housing, which working spaces can be filled via an inlet and emptied via an outlet. It is disadvantageous that the pump unit has a comparatively large axial installation length, because the drive of the pump unit is arranged on an end of the drive shaft facing away from the rotor. In the pump unit according to the invention, the axial installation length is shortened. According to the invention the drive shaft (1) is surrounded by a stator (15) and magnets (16) are provided on the drive shaft (1), which magnets interact magnetically with the stator (15).

Description

Beschreibung Titel  Description title
Förderaggregat  delivery unit
Stand der Technik Die Erfindung geht aus von einem Förderaggregat nach der Gattung des PRIOR ART The invention is based on a delivery unit of the type of
Hauptanspruchs. Main claim.
Es ist schon ein Förderaggregat aus der DE 10 2010 040 758 AI bekannt, mit einer Antriebswelle und einem von der Antriebswelle angetriebenen, in einem Gehäuse drehbar angeordneten Rotor, wobei die Antriebswelle eine mit dem Rotor  It is already a delivery unit known from DE 10 2010 040 758 AI, with a drive shaft and driven by the drive shaft, rotatably mounted in a housing rotor, wherein the drive shaft one with the rotor
zusammenwirkende schiefe Gleitebene aufweist, die den Rotor mit seiner Rotorachse um eine Antriebsachse der Antriebswelle taumeln lässt, wobei der Rotor an seiner der Antriebswelle abgewandten Stirnseite eine Verzahnung aufweist, die mit einer an einem Gehäuse des Förderaggregates ausgebildeten Verzahnung kämmt, wobei zwischen der Verzahnung des Rotors und der Verzahnung des Gehäuses having cooperating inclined sliding plane, which can tumble the rotor with its rotor axis about a drive axis of the drive shaft, wherein the rotor on its side facing away from the drive shaft has a toothing which meshes with a formed on a housing of the delivery unit toothing, wherein between the teeth of the rotor and the teeth of the housing
Arbeitsräume gebildet sind, die über einen Eingang befüllbar und über einen Ausgang entleerbar sind. Nachteilig ist, dass das Förderaggregat eine vergleichsweise große axiale Baulänge aufweist, da der Antrieb des Förderaggregates an einem dem Rotor abgewandten Ende der Antriebswelle angeordnet ist. Workrooms are formed, which can be filled via an entrance and emptied via an exit. The disadvantage is that the delivery unit has a comparatively large axial length, since the drive of the delivery unit is arranged at a side facing away from the rotor end of the drive shaft.
Vorteile der Erfindung Advantages of the invention
Das erfindungsgemäße Förderaggregat mit den kennzeichnenden Merkmalen des Hauptanspruchs hat demgegenüber den Vorteil, dass die axiale Baulänge des Förderaggregates deutlich verkürzt wird, indem die Antriebswelle von einem Stator umgeben ist und an der Antriebswelle Magnete vorgesehen sind, die mit dem Stator magnetisch zusammenwirken. Durch die erfindungsgemäße Ausführung ist die Antriebswelle als Anker einer elektrischen Maschine ausgeführt. Die Funktion des Ankers ist auf diese Weise in die Antriebswelle integriert. Die Anzahl der erforderlichen Bauteile wird somit verringert. Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte The delivery unit according to the invention with the characterizing features of the main claim has the advantage that the axial length of the delivery unit is significantly shortened by the drive shaft is surrounded by a stator and magnets are provided on the drive shaft, which interact magnetically with the stator. Due to the inventive design, the drive shaft is designed as an armature of an electrical machine. The function of the armature is integrated in this way in the drive shaft. The number of required components is thus reduced. The measures listed in the dependent claims are advantageous
Weiterbildungen und Verbesserungen des im Hauptanspruch angegebenen Further developments and improvements of the main claim
Förderaggregates möglich. Delivery units possible.
Besonders vorteilhaft ist, wenn die Antriebswelle zumindest eine Tasche oder Ausnehmung zur Aufnahme der Magnete aufweist, da die Magnete auf diese Weise in der Antriebswelle bündig, also nicht vorstehend, integriert sind. Vorteilhaft ist, wenn die Magnete an der Antriebswelle bezüglich des Stators und in Richtung der Antriebsachse gesehen derart außermittig angeordnet sind, dass die Antriebswelle mit einer vorbestimmten Magnetkraft gegen den Rotor gedrückt wird, da die Antriebswelle und der Rotor auf diese Weise mit einer konstanten Magnetkraft ständig gegen die Verzahnung des Gehäuses gedrückt wird. Dadurch lässt sich das Förderaggregat beim Einschalten des Elektromotors besser starten. Mit anderen Worten ausgedrückt, können die Antriebswelle und der Rotor beim Einschalten des Elektromotors leichter angedreht werden. It is particularly advantageous if the drive shaft has at least one pocket or recess for receiving the magnets, since the magnets in this way in the drive shaft are flush, so not above, integrated. It is advantageous if the magnets are arranged on the drive shaft with respect to the stator and in the direction of the drive axis such eccentric that the drive shaft is pressed with a predetermined magnetic force against the rotor, since the drive shaft and the rotor in this way with a constant magnetic force constantly is pressed against the teeth of the housing. As a result, the delivery unit can be started better when switching on the electric motor. In other words, the drive shaft and the rotor when turning on the electric motor can be turned on easier.
Weiterhin vorteilhaft ist, wenn die Magnete Permanentmagnete sind, da auf diese Weise eine permanenterregte elektrische Maschine gebildet ist. It is also advantageous if the magnets are permanent magnets, since in this way a permanent-magnet electric machine is formed.
Gemäß einer vorteilhaften Ausführung ist die Antriebswelle im Bereich der Magnete von einem Zylinder ummantelt, da die Magnete auf diese Weise gekapselt und vor dem Fluid des Förderaggregates geschützt sind. According to an advantageous embodiment, the drive shaft is encased in the region of the magnets of a cylinder, since the magnets are encapsulated in this way and protected from the fluid of the delivery unit.
Sehr vorteilhaft ist es, wenn an jeder Stirnseite des Stators ein Wellenlager zur Lagerung der Antriebswelle vorgesehen ist, da die Antriebswelle auf diese Weise präzise gelagert ist. Auch vorteilhaft ist, wenn die Wellenlager als Gleitlager ausgebildet sind, da Gleitlager besonders robust und kostengünstig realisierbar sind. It is very advantageous if a shaft bearing for supporting the drive shaft is provided on each end face of the stator, since the drive shaft is mounted precisely in this way. It is also advantageous if the shaft bearings are designed as plain bearings, since plain bearings are particularly robust and inexpensive to implement.
Desweiteren vorteilhaft ist, wenn die Wellenlager an einem scheibenförmigen oder ringförmigen Bauteil vorgesehen sind. Außerdem vorteilhaft ist, wenn die Wellenlager mit einem Kunststoff an den Stator angespritzt sind, da sich die Wellenlager auf diese Weise besonders kostengünstig realisieren lassen und die Funktion des Wellenlagers in den Kunststoff der Anspritzung integriert ist. Furthermore, it is advantageous if the shaft bearings are provided on a disk-shaped or annular component. It is also advantageous if the shaft bearings are molded with a plastic to the stator, since the shaft bearings on this Way particularly inexpensive to implement and the function of the shaft bearing is integrated into the plastic of the gating.
Zeichnung drawing
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung vereinfacht dargestellt und in der nachfolgenden Beschreibung näher erläutert. An embodiment of the invention is shown in simplified form in the drawing and explained in more detail in the following description.
Beschreibung des Ausführungsbeispiels Description of the embodiment
Die Zeichnung zeigt im Schnitt ein erfindungsgemäßes Förderaggregat. Das Förderaggregat, beispielsweise eine Pumpe oder ein Verdichter, umfasst eine Antriebswelle 1, die einen Rotor 2 antreibt, der in einem Gehäuse 3 drehbar angeordnet ist. Die Antriebswelle 1 hat an ihrem dem Rotor 2 zugewandten Ende eine mit dem Rotor 2 zusammenwirkende schiefe Gleitebene 1.1, die beispielsweise an einer Schulter 4 der Antriebswelle 1 ausgebildet ist und den Rotor 2 mit seiner Rotorachse 5 um eine Antriebsachse 6 der Antriebswelle 1 taumeln lässt. Der Rotor 2 weist an seiner der Antriebswelle 1 zugewandten Seite eine mit der schiefen The drawing shows in section an inventive delivery unit. The delivery unit, for example a pump or a compressor, comprises a drive shaft 1, which drives a rotor 2, which is rotatably arranged in a housing 3. The drive shaft 1 has at its end facing the rotor 2 a cooperating with the rotor 2 inclined slip plane 1.1, which is for example formed on a shoulder 4 of the drive shaft 1 and the rotor 2 with its rotor axis 5 about a drive shaft 6 of the drive shaft 1 can tumble. The rotor 2 has on its side facing the drive shaft 1 one with the oblique
Gleitebene 1.1 zusammenwirkende Gleitfläche 2.1 und an seiner der Antriebswelle 1 abgewandten Stirnseite eine Verzahnung 9 auf, die mit der am Gehäuse 3 Sliding plane 1.1 cooperating sliding surface 2.1 and facing away from the drive shaft 1 end face a toothing 9, with the on the housing. 3
ausgebildeten Verzahnung 10 kämmt. Zwischen der Verzahnung 9 des Rotors 2 und der Verzahnung 10 des Gehäuses 3 sind Arbeitsräume 11 gebildet, die über einen Eingang 12 des Förderaggregates befüllbar und über einen Ausgang 13 des trained toothing 10 meshes. Between the teeth 9 of the rotor 2 and the toothing 10 of the housing 3 working spaces 11 are formed, which can be filled via an input 12 of the delivery unit and via an output 13 of the
Förderaggregates entleerbar sind. Die Verzahnung 9 des Rotors 2 und die Verzahnung 10 des Gehäuses 3 ist beispielsweise als Zykloidenverzahnung ausgeführt, kann aber auch eine andere Verzahnung sein. Delivery units are emptied. The toothing 9 of the rotor 2 and the toothing 10 of the housing 3 is designed, for example, as a cycloidal toothing, but may also be a different toothing.
Das Förderaggregat arbeitet nach dem Verdrängungsprinzip, so dass das Fluid selbstansaugend über den Eingang 12 in die Arbeitsräume 11 angesaugt und aus diesen druckerhöht über den Ausgang 13 ausgestoßen wird. Die Antriebswelle 1 weist einen Durchgangskanal 14 auf, um Fluid vom Eingang 12 in die Arbeitsräume 11 oder aus diesen heraus zum Ausgang 13 zu transportieren. Welche Öffnung 12, 13 des Förderaggregates Eingang oder Ausgang ist, hängt von der Drehrichtung des Rotors ab. The delivery unit works according to the displacement principle, so that the fluid is sucked in self-priming via the input 12 into the working chambers 11 and discharged from the latter via the output 13. The drive shaft 1 has a through-passage 14 to transport fluid from the inlet 12 into the working spaces 11 or out of these to the outlet 13. Which opening 12, 13 of the Delivery unit is input or output, depends on the direction of rotation of the rotor.
Erfindungsgemäß ist vorgesehen, dass die Antriebswelle 1 von einem Stator 15 zumindest abschnittsweise umgeben ist und dass an der Antriebswelle 1 Magnete 16 vorgesehen sind, die mit dem Stator 15 magnetisch zusammenwirken. Durch diese erfindungsgemäße Ausführung bildet die Antriebswelle 1 einen Anker einer According to the invention it is provided that the drive shaft 1 is at least partially surrounded by a stator 15 and that on the drive shaft 1 magnets 16 are provided which cooperate magnetically with the stator 15. By this embodiment of the invention, the drive shaft 1 forms an anchor of a
elektrischen Maschine, wodurch die axiale Baulänge, also in Richtung der electrical machine, reducing the axial length, ie in the direction of
Antriebsachse 6, verkürzt wird. Die Magnete 16 sind beispielsweise bezüglich des Stators 15 und in Richtung der Antriebsachse 6 gesehen mittig angeordnet. Alternativ können die Magnete 16 an der Antriebswelle 1 bezüglich des Stators 15 und in Drive axle 6, is shortened. The magnets 16 are arranged centrally, for example, with respect to the stator 15 and in the direction of the drive axis 6. Alternatively, the magnets 16 on the drive shaft 1 with respect to the stator 15 and in
Richtung der Antriebsachse 6 gesehen derart außermittig angeordnet sein, dass die Antriebswelle 1 mit einer vorbestimmten Magnetkraft gegen den Rotor 2 gedrückt wird. Die Magnete 16 sind dazu an der Antriebswelle 1 gegenüber einer bezüglich des Stators 15 mittigen Anordnung in vom Rotor 2 abgewandter Richtung versetzt angeordnet. Direction of the drive shaft 6 can be arranged eccentrically such that the drive shaft 1 is pressed against the rotor 2 with a predetermined magnetic force. The magnets 16 are arranged offset to the drive shaft 1 relative to a central arrangement with respect to the stator 15 in the direction away from the rotor 2.
Der Stator 15 ist beispielsweise durch ein Paket von übereinander geschichteten Blechlamellen aus sogenanntem Elektroblech gebildet. The stator 15 is formed for example by a package of stacked laminations of so-called electrical steel.
An der Antriebswelle 1 ist beispielsweise zumindest eine Tasche oder Ausnehmung oder zumindest ein Absatz 17 zur Aufnahme der Magnete 16 vorgesehen. Die zumindest eine Tasche oder Ausnehmung 16 kann nach radial außen bezüglich der Antriebsachse 6 offen oder geschlossen ausgeführt sein. Die Magnete 16 sind On the drive shaft 1, for example, at least one pocket or recess or at least one shoulder 17 for receiving the magnets 16 is provided. The at least one pocket or recess 16 may be designed to be open or closed radially outward with respect to the drive axle 6. The magnets 16 are
Permanentmagnete, um eine permanenterregte elektrische Maschine zu bilden. DiePermanent magnets to form a permanent magnet electric machine. The
Magnete 16 können Einzelmagnete sein oder an einem einzigen Ring ausgebildet sein, in dem Magnetpulver eingebettet ist. Beispielsweise kann der Magnetring aus einem Kunststoff als Basis Werkstoff hergestellt sein, in dem das Magnetpulver verteilt vorliegt. Die Antriebswelle 1 kann im Bereich der Magnete 16 von einer topfförmigen oder zylinderförmigen Ummantelung 18, die auch eine Beschichtung sein kann, überdeckt sein. Die Ummantelung 18 ist beispielsweise aus Kunststoff hergestellt und schützt die Magnete 16 gegenüber dem Fluid des Förderaggregates und/oder fixiert diese in der zumindest einen Tasche oder Ausnehmung 17. Gemäß dem Ausführungsbeispiel ist an jeder Stirnseite des Stators 15 ein Wellenlager 20 oder eine Aufnahme für ein Wellenlager 20 vorgesehen. Das Wellenlager 20 ist beispielsweise als Gleitlager ausgebildet. Die Wellenlager 20 sind jeweils an einem scheibenförmigen oder ringförmigen Bauteil 19 vorgesehen, das beispielsweise an den Stirnseiten des Stators 15 anliegt. Das Bauteil 19 kann direkt an den Stator 15 angespitzt sein. Das Bauteil 19 weist eine Durchgangsöffnung 21 für die Antriebswelle 1 auf. In der Durchgangsöffnung 21 kann das Wellenlager 20 als separates Bauteil, beispielsweise als Gleitlagerbuchse, angeordnet sein. Die Durchgangsöffnung 21 kann aber auch selbst das Gleitlager bilden. Magnets 16 may be individual magnets or be formed on a single ring, is embedded in the magnetic powder. For example, the magnetic ring may be made of a plastic as the base material in which the magnetic powder is distributed. The drive shaft 1 can be covered in the region of the magnets 16 by a cup-shaped or cylindrical casing 18, which may also be a coating. The jacket 18 is made of plastic, for example, and protects the magnets 16 against the fluid of the delivery unit and / or fixes them in the at least one pocket or recess 17. According to the embodiment, a shaft bearing 20 or a receptacle for a shaft bearing 20 is provided on each end face of the stator 15. The shaft bearing 20 is formed for example as a plain bearing. The shaft bearings 20 are each provided on a disk-shaped or annular component 19, which abuts, for example, on the end faces of the stator 15. The component 19 may be sharpened directly to the stator 15. The component 19 has a passage opening 21 for the drive shaft 1. In the through hole 21, the shaft bearing 20 may be arranged as a separate component, for example as a plain bearing bush. The passage opening 21 can also form the sliding bearing itself.
Der Stator 15 weist an seiner der Antriebswelle 1 zugewandten Innenseite Statorzähne 24 auf, an denen jeweils eine Statorwicklung 25 vorgesehen ist, wobei zwischen den Statorzähnen 25 Statornuten 26 gebildet sind. Die Statornuten 26 können mit The stator 15 has stator teeth 24 on its inner side facing the drive shaft 1, on each of which a stator winding 25 is provided, wherein stator slots 26 are formed between the stator teeth 25. The stator 26 can with
Kunststoff ausgefüllt sein, beispielsweise derart, dass die Bauteile 19 durch den Kunststoff einstückig miteinander verbunden sind. An den Statorzähnen 25 sind beispielsweise Spulenkörper 27 vorgesehen, die die Statorwicklung 25 aufnehmen und diese gegenüber dem Stator 15 elektrisch isolieren. Be filled with plastic, for example, such that the components 19 are integrally connected by the plastic. On the stator teeth 25, for example, bobbin 27 are provided which receive the stator winding 25 and electrically isolate them from the stator 15.
Die aus den Statornuten 26 vorstehenden Abschnitte der Statorwicklung 25 sind beispielsweise ebenfalls mit Kunststoff umspritzt und damit vor Korrosion geschützt, wobei diese Umspritzung und das beispielsweise an den Stator 15 angespritzte Bauteil 19 in einem Spritzvorgang einstückig hergestellt sein können. The projecting from the stator 26 sections of the stator winding 25 are, for example, also encapsulated with plastic and thus protected from corrosion, said encapsulation and the molded example, the stator 15 component 19 may be made in one piece in an injection process.
Der Kunststoff kann zusätzlich auch abschnittsweise am Außenumfang des Stators 15 vorgesehen sein, beispielsweise als Steg 30, und die scheibenförmigen oder ringförmigen Bauteile 19 miteinander verbinden.  The plastic may also be provided in sections on the outer circumference of the stator 15, for example, as a web 30, and connect the disc-shaped or annular components 19 together.
Das Gehäuse 3 umfasst einen hohlzylinderförmigen oder topfförmigen The housing 3 comprises a hollow cylindrical or pot-shaped
Gehäuseabschnitt 3.1, der stirnseitig von zumindest einem Deckel 3.2, 3.3 Housing section 3.1, the front side of at least one lid 3.2, 3.3
verschlossen ist. Gemäß dem Ausführungsbeispiel ist das Gehäuse 3 is closed. According to the embodiment, the housing 3
hohlzylinderförmig ausgeführt und stirnseitg von jeweils einem Deckel 3.2,3.3 verschlossen. Einer der Deckel 3.2,3.3 könnte aber auch als Boden eines topfförmigen Gehäuseabschnitts 3.1 ausgeführt sein. designed as a hollow cylinder and closed at the ends by a respective lid 3.2.3.3. One of the covers 3.2.3.3 could also be designed as the bottom of a cup-shaped housing section 3.1.

Claims

Förderaggregat mit einer Antriebswelle (1) und einem von der Antriebswelle (1) angetriebenen, in einem Gehäuse (3) drehbar angeordneten Rotor (2), wobei die Antriebswelle (1) eine mit dem Rotor (2) zusammenwirkende schiefe Gleitebene (1.1) aufweist, die den Rotor (2) mit seiner Rotorachse (5) um eine Antriebsachse (6) der Antriebswelle (1) taumeln lässt, wobei der Rotor (2) an seiner der Antriebswelle (1) abgewandten Stirnseite eine Verzahnung (9) aufweist, die mit einer an dem Gehäuse (3) ausgebildeten Verzahnung (10) kämmt, wobei zwischen der Verzahnung (9) des Rotors (3) und der Verzahnung (10) des Gehäuses (3) Arbeitsräume (11) gebildet sind, dadurch gekennzeichnet, dass die Antriebswelle (1) von einem Stator (15) umgeben ist und dass an der Antriebswelle (1) Magnete (16) vorgesehen sind, die mit dem Stator (15) magnetisch zusammenwirken.  Delivery unit with a drive shaft (1) and one of the drive shaft (1) driven in a housing (3) rotatably mounted rotor (2), wherein the drive shaft (1) cooperating with the rotor (2) inclined sliding plane (1.1) , which rotates the rotor (2) with its rotor axis (5) about a drive axis (6) of the drive shaft (1), wherein the rotor (2) on its the drive shaft (1) facing away from a toothing (9) which with a on the housing (3) formed toothing (10) meshes, wherein between the toothing (9) of the rotor (3) and the toothing (10) of the housing (3) working spaces (11) are formed, characterized in that the Drive shaft (1) by a stator (15) is surrounded and that on the drive shaft (1) magnets (16) are provided which cooperate magnetically with the stator (15).
Förderaggregat nach Anspruch 1, dadurch gekennzeichnet, dass die Delivery unit according to claim 1, characterized in that the
Antriebswelle zumindest eine Tasche oder Ausnehmung (17) zur Aufnahme der Magnete (16) aufweist. Drive shaft has at least one pocket or recess (17) for receiving the magnets (16).
Förderaggregat nach Anspruch 1, dadurch gekennzeichnet, dass die Delivery unit according to claim 1, characterized in that the
Magnete (16) an der Antriebswelle (1) bezüglich des Stators (15) und in Richtung der Antriebsachse (6) gesehen mittig angeordnet sind. Magnets (16) on the drive shaft (1) with respect to the stator (15) and in the direction of the drive axis (6) are arranged centrally.
Förderaggregat nach Anspruch 1, dadurch gekennzeichnet, dass die Delivery unit according to claim 1, characterized in that the
Magnete (16) an der Antriebswelle (1) bezüglich des Stators (15) und in Richtung der Antriebsachse (6) gesehen derart außermittig angeordnet sind, dass die Antriebswelle (1) mit einer vorbestimmten Magnetkraft gegen den Rotor (2) gedrückt wird. Magnets (16) on the drive shaft (1) with respect to the stator (15) and seen in the direction of the drive axis (6) are eccentrically arranged so that the drive shaft (1) with a predetermined magnetic force against the rotor (2) is pressed.
Förderaggregat nach Anspruch 4, dadurch gekennzeichnet, dass die Delivery unit according to claim 4, characterized in that the
Magnete (16) an der Antriebswelle (1) gegenüber einer bezüglich des Stators (15) mittigen Anordnung in vom Rotor (2) abgewandter Richtung versetzt angeordnet sind. Magnets (16) on the drive shaft (1) with respect to a relative to the stator (15) central arrangement in the direction away from the rotor (2) are arranged offset.
6. Förderaggregat nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Magnete (16) Permanentmagnete sind. 6. delivery unit according to one of the preceding claims, characterized in that the magnets (16) are permanent magnets.
Förderaggregat nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Antriebswelle (1) im Bereich der Magnete (16) von einer Ummantelung (18) überdeckt ist. Conveying unit according to one of the preceding claims, characterized in that the drive shaft (1) in the region of the magnets (16) by a sheath (18) is covered.
Förderaggregat nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass an jeder Stirnseite des Stators (15) ein Wellenlager (20) zur Lagerung der Antriebswelle (1) vorgesehen ist. Delivery unit according to one of the preceding claims, characterized in that on each end face of the stator (15) has a shaft bearing (20) for supporting the drive shaft (1) is provided.
9. Förderaggregat nach Anspruch 5, dadurch gekennzeichnet, dass die 9. delivery unit according to claim 5, characterized in that the
Wellenlager (20) als Gleitlager ausgebildet sind.  Shaft bearing (20) are designed as plain bearings.
10. Förderaggregat nach Anspruch 5, dadurch gekennzeichnet, dass die 10. delivery unit according to claim 5, characterized in that the
Wellenlager (20) an einem scheibenförmigen oder ringförmigen Bauteil (19) vorgesehen sind.  Shaft bearing (20) on a disc-shaped or annular member (19) are provided.
11. Förderaggregat nach einem der vorhergehenden Ansprüche, dadurch 11. Delivery unit according to one of the preceding claims, characterized
gekennzeichnet, dass der Stator (15) an seiner der Antriebswelle (1) zugewandten Innenseite Statorzähne (24) aufweist, an denen jeweils eine Statorwicklung (25) vorgesehen ist, wobei zwischen den Statorzähnen (24) Statornuten (26) gebildet sind.  in that the stator (15) has stator teeth (24) on its inner side facing the drive shaft (1), on each of which a stator winding (25) is provided, wherein stator slots (26) are formed between the stator teeth (24).
12. Förderaggregat nach einem der vorhergehenden Ansprüche, dadurch 12. Delivery unit according to one of the preceding claims, characterized
gekennzeichnet, dass das Gehäuse (3) einen zylinderförmigen oder topfförmigen Gehäuseabschnitt (3.1) aufweist, der stirnseitig von zumindest einem Deckel (3.2,3.3) verschlossen ist.  in that the housing (3) has a cylindrical or pot-shaped housing section (3.1) which is closed at the front by at least one cover (3.2, 3.3).
EP14726905.4A 2013-05-23 2014-05-15 Pump unit Withdrawn EP2999888A2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102013209620 2013-05-23
DE102014209140.3A DE102014209140A1 (en) 2013-05-23 2014-05-14 delivery unit
PCT/EP2014/059907 WO2014187716A2 (en) 2013-05-23 2014-05-15 Pump unit

Publications (1)

Publication Number Publication Date
EP2999888A2 true EP2999888A2 (en) 2016-03-30

Family

ID=51863372

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14726905.4A Withdrawn EP2999888A2 (en) 2013-05-23 2014-05-15 Pump unit

Country Status (7)

Country Link
US (1) US10174758B2 (en)
EP (1) EP2999888A2 (en)
KR (1) KR20160013021A (en)
CN (1) CN105378283B (en)
BR (1) BR112015028920A2 (en)
DE (1) DE102014209140A1 (en)
WO (1) WO2014187716A2 (en)

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Also Published As

Publication number Publication date
BR112015028920A2 (en) 2017-07-25
US20160097388A1 (en) 2016-04-07
KR20160013021A (en) 2016-02-03
US10174758B2 (en) 2019-01-08
DE102014209140A1 (en) 2014-11-27
WO2014187716A2 (en) 2014-11-27
WO2014187716A3 (en) 2015-02-19
CN105378283B (en) 2018-06-26
CN105378283A (en) 2016-03-02

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