EP3337978B1 - Motor-pump unit - Google Patents

Motor-pump unit Download PDF

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Publication number
EP3337978B1
EP3337978B1 EP16774848.2A EP16774848A EP3337978B1 EP 3337978 B1 EP3337978 B1 EP 3337978B1 EP 16774848 A EP16774848 A EP 16774848A EP 3337978 B1 EP3337978 B1 EP 3337978B1
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EP
European Patent Office
Prior art keywords
motor
valve
pump
pump assembly
assembly according
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EP16774848.2A
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German (de)
French (fr)
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EP3337978A2 (en
Inventor
Jürgen Schonlau
Marc Leinweber
Daniel Sauer
Robert Wellnitz
Markus Ermert
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Thomas Magnete GmbH
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Thomas Magnete GmbH
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Publication of EP3337978A2 publication Critical patent/EP3337978A2/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/121—Casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/22—Arrangements for enabling ready assembly or disassembly
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Description

Die Erfindung betrifft ein Motorpumpenaggregat entsprechend dem Oberbegriff des ersten Patentanspruchs.The invention relates to a motor pump unit according to the preamble of the first claim.

Stand der Technik:State of the art:

Motorpumpenaggregate, die einen Elektromotor und eine hydraulische Pumpe zusammenfassen, sind bekannt, zum Beispiel aus den Druckschriften DE 196 54 092 A1 und DE 10 2014 014 508 B3 .Motor pump units that combine an electric motor and a hydraulic pump are known, for example from the publications DE 196 54 092 A1 and DE 10 2014 014 508 B3 .

Es sind auch Pumpenaggregate bekannt, die eine hydraulische Pumpe und ein von einem Elektromagneten betätigtes Ventil zusammenfassen.Pump assemblies are also known which combine a hydraulic pump and a valve actuated by an electromagnet.

Auch die Zusammenfassung eines Elektromotors, einer hydraulischen Pumpe und eines Ventils zu einem Aggregat wird als bekannt betrachtet.The combination of an electric motor, a hydraulic pump and a valve into one unit is also considered to be known.

Ebenfalls ist es bekannt, ein Motorpumpenaggregat mit einem Druckaufnehmer auszurüsten, zum Beispiel aus der Druckschrift DE 10 2014 006 556 B3 .It is also known to equip a motor pump unit with a pressure sensor, for example from the publication DE 10 2014 006 556 B3 .

Aus der Druckschrift CN 202 338 482 U ist ein Motorpumpenaggregat bekannt, das mindestens aus einem Elektromotor, einer hydraulischen Pumpe und einem Ventil besteht, wobei das Motorpumpenaggregat mit einer Kunststoffumspritzung versehen ist und wobei die Kunststoffumspritzung eien Deckel des Elektromotors bildet, ein Steckergehäuse für eine elektrische Steckverbindung bildet und die zu der Steckverbindung führenden Leiterbahnen umgreift.From the publication CN 202 338 482 U a motor pump unit is known which consists of at least one electric motor, a hydraulic pump and a valve, the motor pump unit being provided with a plastic encapsulation and the plastic encapsulation forming a cover of the electric motor, forming a plug housing for an electrical plug connection and leading to the plug connection Encompasses conductor tracks.

Ferner ist es bekannt, die Wicklung eines Elektromotors oder einer Magnetspule des Elektromagneten mit Kunststoff zu umspritzen, damit erreicht man einen mechanischen Schutz der Wicklung und eine vorteilhafte Wärmeableitung aus der Wicklung.It is also known to encapsulate the winding of an electric motor or a solenoid coil of the electromagnet with plastic, so that mechanical protection of the winding and advantageous heat dissipation from the winding are achieved.

Die bekannten Lösungen zeichnen sich meist dadurch aus, dass der Elektromotor einerseits und die Magnetspule andererseits jeweils eigene Umspritzungen aufweisen, so dass erst bei dem Zusammenbau der Bauteile des Aggregats die Umspritzungen an ihren mit Passungen versehenen Fügestellen sich berühren. Damit müssen die Bauteile jeweils eigene elektrische Stecker aufweisen, oder es müssen Zwischenstecker verwendet werden, um ein Bauteil mit dem anderen elektrisch zu verbinden.The known solutions are usually characterized by the fact that the electric motor on the one hand and the solenoid coil on the other hand each have their own extrusion coatings, so that the extrusion coatings only touch at their joints where the components are assembled. This means that the components must each have their own electrical plugs, or adapter plugs must be used to electrically connect one component to the other.

Aufgabe:Task:

Ein Motorpumpenaggregat soll in einer kostengünstigen und für die Großserienfertigung geeigneten Weise so ausgeführt werden, dass eine Mehrzahl von elektrischen Bauteilen gemeinsam mittels einer Steckverbindung angeschlossen werden, wobei die Anzahl der erforderlichen Werkzeuge gering gehalten werden soll.A motor pump unit is to be designed in a cost-effective manner that is suitable for large series production in such a way that a plurality of electrical components are connected together by means of a plug connection, the number of tools required being kept small.

Lösung:Solution:

Die Aufgaben werden durch die kennzeichnenden Merkmale des ersten Anspruchs gelöst, vorteilhafte Weiterbildungen und Verfahren zur Herstellung der Umspritzung sind in den Unteransprüchen angegeben.The objects are achieved by the characterizing features of the first claim, advantageous further developments and methods for producing the extrusion coating are specified in the subclaims.

Die Nutzung einer gemeinsamen elektrischen Steckverbindung für das gesamte Aggregat erleichtert sowohl den Test des Aggregats nach der Herstellung als auch den Einbau des Aggregats in eine übergeordnete Vorrichtung. Diese Erleichterungen sind insbesondere in der Serienfertigung von Bedeutung. Wenn man Zwischensteckverbindungen vermeiden will, ist eine gemeinsame Kunststoffumspritzung der Bauteile oder der Teile von Bauteilen erforderlich, die elektrisch angeschlossen werden sollen.The use of a common electrical plug connection for the entire unit facilitates both the testing of the unit after manufacture and the installation of the unit in a higher-level device. These facilities are particularly important in series production. If you want to avoid plug-in connections, a common plastic encapsulation of the components or parts of components that are to be electrically connected is required.

Diese gemeinsame Kunststoffumspritzung macht es allerdings erforderlich, die Bauteile so zu gestalten, dass eine gemeinsame Urformung und auch eine Entformung möglich sind.This common plastic encapsulation makes it necessary, however, to design the components in such a way that a common original shaping and also a demolding are possible.

Von dem Elektromotor ist vorzugsweise ein Deckel durch die Kunststoffumspritzung herzustellen, der mindestens Teile der Statorspulen und jedenfalls die elektrischen Anschlüsse umgreift, damit die Spulen mit der Steckverbindung durch Leitungen verbunden werden, die in der Kunststoffumspritzung verlaufen.The electric motor preferably produces a cover through the plastic encapsulation, which covers at least parts of the stator coils and in any case the electrical connections, so that the coils are connected to the plug connection by lines which run in the plastic encapsulation.

Die Pumpe ist an den Elektromotor angeflanscht, aber nicht von der oben genannten Kunststoffumspritzung umfasst. Allerdings gibt es eine abgedichtete Schnittstelle zu der Kunststoffumspritzung, wenn in dieser Kühlkanäle für den Elektromotor verlaufen, die von der Pumpe aus mit Fluid beaufschlagt werden sollen.The pump is flanged to the electric motor, but is not covered by the plastic coating mentioned above. However, there is a sealed interface to the plastic extrusion coating if cooling passages for the electric motor run in it, which are to be supplied with fluid from the pump.

Von dem Elektromagneten sind vorzugsweise die Magnetspule und mindestens ein Flussleitelement von der Kunststoffumspritzung umfasst. Damit kann auch die Magnetspule des Elektromagneten mit derselben Steckverbindung durch Leitungen verbunden werden, die in der Kunststoffumspritzung verlaufen.The electromagnet preferably encompasses the magnetic coil and at least one flux guiding element from the plastic encapsulation. With that, too the solenoid of the electromagnet are connected to the same plug connection by lines that run in the plastic encapsulation.

In ähnlicher Weise wird ein elektrischer Druckaufnehmer, der in einer vorteilhaften Ausführung mit dem Motorpumpenaggregat verbunden ist, von der Kunststoffumspritzung teilweise umfasst. Seine elektrischen Bauteile und vor allem die elektrischen Anschlüsse liegen in der Kunststoffumspritzung und die zugeordneten elektrischen Leitungen führen innerhalb der Umspritzung zu der genannten gemeinsamen Steckverbindung.Similarly, an electrical pressure transducer, which is connected in an advantageous embodiment to the motor pump unit, is partially encased by the plastic encapsulation. Its electrical components and, above all, the electrical connections are in the plastic encapsulation and the associated electrical lines lead within the encapsulation to the common plug connection mentioned.

Zur Kühlung des Elektromotors sind vorteilhafterweise Kühlkanäle in der Kunststoffumspritzung vorzugsweise so angeordnet, dass sie zu ausgewählten metallischen Bauteilen des Elektromotors hin offen sind, damit das Fluid, das durch die Kanäle strömt, diese Bauteile kühlt.To cool the electric motor, cooling channels in the plastic extrusion coating are advantageously arranged such that they are open to selected metallic components of the electric motor so that the fluid that flows through the channels cools these components.

Das kühlende Fluid wird durch entsprechende Anschlüsse entweder dem Auslass der genannten Pumpe entnommen, oder von einer anderen Pumpe in Umlauf gesetzt, die über zusätzliche Leitungen angeschlossen ist, die innerhalb der übergeordneten Vorrichtung zu einer Flanschfläche der Kunststoffumspritzung verlaufen.The cooling fluid is either taken from the outlet of the pump mentioned, or put into circulation by another pump, which is connected via additional lines which run within the higher-level device to a flange surface of the plastic extrusion coating.

Der Volumenstrom des kühlenden Fluids wird vorteilhafterweise durch eine Drossel beschränkt, damit auch andere Verbraucher angemessen versorgt werden.The volume flow of the cooling fluid is advantageously limited by a throttle so that other consumers are also adequately supplied.

Die oben genannte Flanschfläche ist die Begrenzungsfläche eines Flansches, der Teil der Kunststoffumspritzung ist, und vorrangig dazu dient, das Motorpumpenaggregat an der übergeordneten Vorrichtung zu befestigen.The flange surface mentioned above is the boundary surface of a flange, which is part of the plastic encapsulation, and primarily serves to fasten the motor pump unit to the higher-level device.

Das oben genannte elektromagnetisch betätigte Ventil enthält eine Ventilhülse, die vorzugsweise in eine Aufnahmebohrung hineinragt, die in der Kunststoffumspritzung vorgesehen ist. Weiter vorzugsweise enthält diese Aufnahmebohrung ein Gewinde, mit dem die Ventilhülse befestigt wird.The above-mentioned electromagnetically actuated valve contains a valve sleeve, which preferably projects into a receiving bore provided in the plastic encapsulation. This receiving bore preferably also contains a thread with which the valve sleeve is fastened.

Die fluidführenden Schnittstellen der Kunststoffumspritzung, beispielsweise zur Flanschfäche, zum Elektromotor und zum Ventil müssen abgedichtet werden, dazu dienen Dichtungen aus Elastomerwerkstoffen, die teilweise von der Kunststoffumspritzung gefasst werden.The fluid-carrying interfaces of the plastic encapsulation, for example to the flange surface, to the electric motor and to the valve, have to be sealed; seals made of elastomer materials are used for this, some of which are encased by the plastic encapsulation.

Der oben genannte Elektromotor und die oben genannte Pumpe weisen vorteilhafterweise eine gemeinsame Welle zur Lagerung ihrer Rotoren auf. Dadurch wird eine Kupplung vermieden und es wird Bauraum eingespart.The above-mentioned electric motor and the above-mentioned pump advantageously have a common shaft for supporting their rotors. This avoids a clutch and saves installation space.

Das oben genannte Ventil ist in einer ersten Ausführung ein Wegeventil, das von dem oben genannten Elektromagneten von einer Endlage in eine andere Endlage geschaltet wird und durch eine Rückstellfeder zurückgestellt wird. In den Endlagen werden unterschiedliche Schaltbedingungen für Fluidströme eingestellt.In a first embodiment, the above-mentioned valve is a directional control valve, which is switched from one end position to another end position by the above-mentioned electromagnet and is reset by a return spring. Different switching conditions for fluid flows are set in the end positions.

In einer zweiten Ausführung ist das Ventil ein proportionalwirkendes Drosselventil, das durch den Elektromagneten gegen die Kraft einer Rückstellfeder verstellt wird und dabei einen Fluidstrom drosselt.In a second embodiment, the valve is a proportional throttle valve which is adjusted by the electromagnet against the force of a return spring and thereby throttles a fluid flow.

In einer dritten Ausführung ist das Ventil ein proportionalwirkendes Druckregelventil, das die Kraft des Elektromagneten mit der Kraft eines Fluiddrucks am Arbeitsanschluss vergleicht und bei einer Abweichung vom dem durch den Elektromagneten vorgegebenen Sollwert des Fluiddrucks den Zufluss und/oder den Abfluss von Fluid zum Arbeitsanschluss hin oder von dem Arbeitsanschluss weg so verändert, dass der Fluiddruck am Arbeitsanschluss sich auf den Sollwert hin verändert.In a third embodiment, the valve is a proportional pressure control valve which compares the force of the electromagnet with the force of a fluid pressure at the working connection and, in the event of a deviation from the setpoint value of the fluid pressure specified by the electromagnet, the inflow and / or outflow of fluid to the working connection or changed away from the working connection in such a way that the fluid pressure at the working connection changes towards the setpoint.

Das Motorpumpenaggregat enthält vorteilhafterweise noch ein weiteres Kunststoffteil, das die fluidische Leitungsführung von der Pumpe zum Ventil und gegebenenfalls zum Druckaufnehmer übernimmt, damit die übergeordnete Vorrichtung einfacher ausgeführt werden kann.The motor pump unit advantageously also contains a further plastic part which takes over the fluidic line routing from the pump to the valve and, if appropriate, to the pressure transducer, so that the higher-level device can be designed more simply.

Anwendung:Application:

Betätigung von proportionalwirkenden hydraulisch-mechanischen Aktuatoren mit präziser Steuerung der Kraft und der Geschwindigkeit des mechanischen Stellers in Abhängigkeit von den elektrischen Eingangssignalen zu dem Motorpumpenaggregat.Actuation of proportional-acting hydraulic-mechanical actuators with precise control of the force and speed of the mechanical actuator depending on the electrical input signals to the motor pump unit.

Bilder:Photos:

  • Fig. 1 zeigt das Motorpumpenaggregat in einer Seitenansicht. Fig. 1 shows the motor pump unit in a side view.
  • Fig. 2 zeigt das Motorpumpenaggregat im Schnitt Fig. 2 shows the motor pump unit in section
  • Fig. 3 zeigt eine schematische Darstellung eines Motorpumpenaggregats mit einem Ventil und einem Druckaufnehmer. Fig. 3 shows a schematic representation of a motor pump unit with a valve and a pressure sensor.
Beispielhafte Ausführung:Exemplary execution:

Das Motorpumpenaggregat (1) entsprechend Fig. 1 und Fig. 2 besteht mindestens aus einem Elektromotor (2), einer hydraulischen Pumpe (3) und einem von einem Elektromagneten (4) betätigten Ventil (5).The motor pump unit (1) accordingly Fig. 1 and Fig. 2 consists of at least one electric motor (2), a hydraulic pump (3) and a valve (5) actuated by an electromagnet (4).

Die hydraulische Pumpe kann eine hydrostatische Pumpe (zum Beispiel Zahnradpumpe) oder eine hydrodynamische Pumpe (zum Beispiel Kreiselpumpe) sein.The hydraulic pump can be a hydrostatic pump (e.g. gear pump) or a hydrodynamic pump (e.g. centrifugal pump).

Das Motorpumpenaggregat ist mit einer Kunststoffumspritzung (6) versehen, wobei die Kunststoffumspritzung einen Deckel (7) des Elektromotors (2) bildet, eine Magnetspule (8) und mindestens ein Flussleitelement (21) des Elektromagneten (4) umgreift, ein Steckergehäuse (9) für eine elektrische Steckverbindung (23) bildet und die zu der Steckverbindung (23) führenden Leiterbahnen (10) umgreift.The motor pump unit is provided with a plastic encapsulation (6), the plastic encapsulation forming a cover (7) of the electric motor (2), encompassing a magnetic coil (8) and at least one flux guiding element (21) of the electromagnet (4), a connector housing (9) for an electrical plug connection (23) and encompasses the conductor tracks (10) leading to the plug connection (23).

In einer Ausführung gemäß Fig. 3 enthält das Motorpumpenaggregat einen Druckaufnehmer (11), der den Druck am Ausgang der Pumpe (3) misst, wobei der Druckaufnehmer (11) mindestens teilweise in die Kunststoffumspritzung (6) eingebettet ist und durch eine in der Kunststoffumspritzung verlaufende elektrische Leitung (10) an die gemeinsame Steckverbindung (23) elektrisch angeschlossen ist.In a version according to Fig. 3 The motor pump unit contains a pressure sensor (11), which measures the pressure at the outlet of the pump (3), the pressure sensor (11) being at least partially embedded in the plastic coating (6) and by an electrical line (10) running in the plastic coating the common connector (23) is electrically connected.

In einer vorteilhaften weiteren Ausführung weist die Kunststoffumspritzung (6) Kühlkanäle (12) auf, die Arbeitsflüssigkeit der Pumpe (3) oder eine andere Flüssigkeit zu wärmeabgebenden Bauteilen des Elektromotors (2) leiten, wobei vorteilhafterweise die Größe des Durchflusses durch diese Kühlkanäle durch mindestens eine Drossel bestimmt ist.In an advantageous further embodiment, the plastic encapsulation (6) has cooling channels (12) which conduct the working fluid of the pump (3) or another liquid to heat-emitting components of the electric motor (2), the magnitude of the flow through these cooling channels advantageously passing through at least one Throttle is determined.

Vorzugsweise enthält die Kunststoffumspritzung (6) einen Flansch (13), der zur Befestigung des Motorpumpenaggregats an einer übergeordneten Vorrichtung (14) dient.The plastic encapsulation (6) preferably contains a flange (13) which is used to fasten the motor pump unit to a higher-level one Device (14) is used.

Weiter vorzugsweise enthält die Kunststoffumspritzung (6) eine mit einem Gewinde (15) versehene Aufnahmebohrung (24) für eine Ventilhülse (16) des Ventils (5).The plastic encapsulation (6) further preferably contains a receiving bore (24) with a thread (15) for a valve sleeve (16) of the valve (5).

Vorzugsweise umfasst die Kunststoffumspritzung mindestens eine elastische Dichtung (17) teilweise, wobei eine Dichtung den Spalt zwischen dem Motorpumpenaggregat und der übergeordneten Vorrichtung (14) abdichtet.The plastic encapsulation preferably comprises at least one elastic seal (17), a seal sealing the gap between the motor pump unit and the higher-level device (14).

Vorteilhafterweise sind ein Rotor (18) des Elektromotors (2) und ein Rotor (19) der hydrostatischen Pumpe (3) gemeinsam mittels einer Welle (20) gelagert.A rotor (18) of the electric motor (2) and a rotor (19) of the hydrostatic pump (3) are advantageously mounted together by means of a shaft (20).

In einer ersten Variante ist das Ventil (5) ein zwischen zwei Endlagen durch den Elektromagneten (4) geschaltetes Wegeventil.In a first variant, the valve (5) is a directional valve switched between two end positions by the electromagnet (4).

In einer zweiten Variante ist das Ventil (5) ein durch den Elektromagneten (4) proportionalwirkend gegen eine Rückstellfeder verstelltes Drosselventil.In a second variant, the valve (5) is a throttle valve that is adjusted proportionally against a return spring by the electromagnet (4).

In einer dritten Variante ist das Ventil (5) ein durch den Elektromagneten (4) proportionalwirkend verstelltes Druckregelventil ist.In a third variant, the valve (5) is a pressure control valve which is adjusted proportionally by the electromagnet (4).

Zur fluidischVerbindung der Pumpe (3) mit dem Ventil (5) und der übergeordnete Vorrichtung (14) dient ein Fluidleitungssystem (25) aus Kunststoff.A fluid line system (25) made of plastic is used to fluidly connect the pump (3) to the valve (5) and the higher-level device (14).

Bei der Herstellung der Kunststoffumspritzung wird vorzugsweise mindestens ein Flussleitelement (21) bei der Umspritzung der Magnetspule (8) durch einen die Aufnahmebohrung (24) abbildenden Werkzeugkern in der Sollposition gehalten.During the production of the plastic encapsulation, at least one flux guiding element (21) is preferably held in the desired position during the encapsulation of the magnetic coil (8) by a tool core that images the receiving bore (24).

Ebenfalls vorzugsweise wird das Werkzeug zur Herstellung der Kunststoffumspritzung so eingerichtet, dass der flüssige Kunststoff bei dem Spritzvorgang ohne Drall in die der Magnetspule (8) zugeordneten Kavität einfließt.The tool for producing the plastic encapsulation is also preferably set up in such a way that the liquid plastic in the case of the Spraying process flows without swirl into the cavity assigned to the solenoid coil (8).

Nach dem Zusammenbau des Motorpumpenaggregats werden vorzugsweise alle Bauteile des Aggregats gemeinsam geprüft.After assembling the motor pump unit, all components of the unit are preferably checked together.

Liste der BezugszeichenList of reference numbers

1.1.
MotorpumpenaggregatMotor pump unit
2.2nd
ElektromotorElectric motor
3.3rd
Pumpepump
4.4th
ElektromagnetElectromagnet
5.5.
VentilValve
6.6.
KunststoffumspritzungPlastic coating
7.7.
Deckelcover
8.8th.
MagnetspuleSolenoid
9.9.
SteckergehäuseConnector housing
10.10th
LeiterbahnConductor track
11.11.
DruckaufnehmerPressure transducer
12.12th
KühlkanalCooling channel
13.13.
Flanschflange
14.14.
Übergeordnete VorrichtungParent device
15.15.
Gewindethread
16.16.
VentilhülseValve sleeve
17.17th
Dichtungpoetry
18.18th
Rotorrotor
19.19th
Rotorrotor
20.20th
Wellewave
21.21.
FlussleitelementFlow guide
23.23.
SteckverbindungConnector
24.24th
AufnahmebohrungLocation hole
25.25th
FluidleitungssystemFluid line system

Claims (9)

  1. Motor-pump assembly (1), at least consisting of an electric motor (2), a hydraulic pump (3) and a valve (5) which is actuated by an electromagnet (4),
    characterized in that
    the motor-pump assembly is provided with a plastic encapsulation (6), wherein the plastic encapsulation forms a cover (7) of the electric motor (2), engages around a magnet coil (8) and at least one flux-conducting element (21) of the electromagnet (4), forms a plug connector casing (9) for an electrical plug connection (23) and engages around the conductor tracks (10) leading to the plug connection (23), and wherein the motor-pump assembly additionally contains a pressure sensor (11) which measures the pressure at the outlet of the pump (3),
    and wherein the pressure sensor (11) is at least partially embedded in the plastic encapsulation (6) and electrically connected by the common plug connection (23), and wherein the plastic encapsulation (6) has cooling ducts (12) which conduct working liquid of the pump (3) or some other liquid from another pump to heat-releasing components of the electric motor (2),
    and wherein a rotor (18) of the electric motor (2) and a rotor (19) of the hydrostatic pump (3) are mounted jointly by means of a shaft (20),
    and wherein the valve (5) is a directional valve which is switched between two end positions by the electromagnet (4).
  2. Motor-pump assembly according to Claim 1, characterized in that the plastic encapsulation (6) contains a flange (13) which serves for the fastening of the motor-pump assembly to a superordinate device (14).
  3. Motor-pump assembly according to either of the preceding claims, characterized in that the plastic encapsulation (6) contains a receiving bore (24) for a valve sleeve (16) of the valve (5).
  4. Motor-pump assembly according to Claim 3, characterized in that the receiving bore (24) for the valve sleeve (16) is provided with a thread (15).
  5. Motor-pump assembly according to one of the preceding claims, characterized in that the plastic encapsulation partially surrounds at least one elastic seal (17), wherein a seal seals off the gap between the motor-pump assembly and the superordinate device (14).
  6. Motor-pump assembly according to one of the preceding claims, characterized in that the valve (5) is a throttle valve which is displaced against a restoring spring with proportional action by the electromagnet (4).
  7. Motor-pump assembly according to one of Claims 1 to 5, characterized in that the valve (5) is a pressure regulation valve which is displaced with proportional action by the electromagnet (4).
  8. Motor-pump assembly according to Claim 1, characterized in that a fluid-conducting system (25) composed of plastic connects the pump (3), the valve (5) and the superordinate device (14).
  9. Motor-pump assembly according to Claim 2, characterized in that a fluid-conducting system (25) composed of plastic connects the pump (3), the valve (5), the pressure sensor (11) and the superordinate device (14).
EP16774848.2A 2015-08-17 2016-08-02 Motor-pump unit Active EP3337978B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015010728.3A DE102015010728A1 (en) 2015-08-17 2015-08-17 A motor pump assembly
PCT/EP2016/001331 WO2017028946A2 (en) 2015-08-17 2016-08-02 Motor-pump unit

Publications (2)

Publication Number Publication Date
EP3337978A2 EP3337978A2 (en) 2018-06-27
EP3337978B1 true EP3337978B1 (en) 2020-04-01

Family

ID=57044895

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16774848.2A Active EP3337978B1 (en) 2015-08-17 2016-08-02 Motor-pump unit

Country Status (3)

Country Link
EP (1) EP3337978B1 (en)
DE (1) DE102015010728A1 (en)
WO (1) WO2017028946A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017223715A1 (en) 2017-12-22 2019-06-27 Magna Powertrain Bad Homburg GmbH Gerotor pump and method for producing such

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DE2208622A1 (en) * 1972-02-24 1973-09-06 Bosch Hausgeraete Gmbh DISHWASHER WITH A CIRCULAR PUMP
DE9103554U1 (en) * 1991-03-22 1991-05-29 Helphos Gmbh, 3388 Bad Harzburg, De
DE4438747A1 (en) * 1994-10-29 1996-05-02 Pierburg Gmbh Electrically powered air pump
DE19654092C2 (en) 1996-12-23 2001-05-10 Carl Pawlowsky Device for regulating the mass flow rate of a fluid medium through a flow channel
US5997261A (en) * 1997-10-31 1999-12-07 Siemens Canada Limited Pump motor having fluid cooling system
DE29800347U1 (en) * 1998-01-12 1999-05-12 Bosch Gmbh Robert Electric solenoid valve
DE10142750A1 (en) * 2001-08-31 2003-04-03 Grundfos As Electric drive motor for a centrifugal pump immersed in waste water
JP4893991B2 (en) * 2005-09-06 2012-03-07 株式会社デンソー Fuel pump
DE102009003146A1 (en) * 2009-05-15 2010-11-18 Robert Bosch Gmbh Electrically driven liquid pump with a multi-part rotor and manufacturing method for such a rotor
DE102009047332A1 (en) * 2009-12-01 2011-06-09 Robert Bosch Gmbh Fuel pump has housing which is manufactured from plastic, where plastic has partial transparency for spectrum of laser beams, and plastic is made of polyamide
DE102010026448A1 (en) * 2010-07-08 2012-01-12 Ksb Aktiengesellschaft rotary pump
CN202338482U (en) * 2011-11-25 2012-07-18 浙江鸿瑞基业汽车零部件有限公司 Plastic plunger fuel pump
DE102012219610A1 (en) * 2012-10-26 2014-04-30 Robert Bosch Gmbh Housing for piston pump i.e. high pressure cleaner, has compression device installed in receiving space, and control device and drive that are fixed with retainer and drive of compression device, and drive arranged between fitting spaces
CN203453125U (en) * 2013-01-22 2014-02-26 宜兴市宙斯泵业有限公司 Improved back-suction type anticorrosive pump
DE102013226131A1 (en) * 2013-12-16 2015-06-18 Skf Lubrication Systems Germany Ag Piston pump device
DE102014006556B3 (en) 2014-05-06 2015-02-19 Thomas Magnete Gmbh Pump unit with electric motor
DE102014014508B3 (en) 2014-10-06 2015-06-25 Thomas Magnete Gmbh pump unit

Also Published As

Publication number Publication date
WO2017028946A3 (en) 2017-07-13
EP3337978A2 (en) 2018-06-27
WO2017028946A2 (en) 2017-02-23
DE102015010728A1 (en) 2017-02-23

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