EP1369588A1 - Gerotor pump - Google Patents

Gerotor pump Download PDF

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Publication number
EP1369588A1
EP1369588A1 EP03010932A EP03010932A EP1369588A1 EP 1369588 A1 EP1369588 A1 EP 1369588A1 EP 03010932 A EP03010932 A EP 03010932A EP 03010932 A EP03010932 A EP 03010932A EP 1369588 A1 EP1369588 A1 EP 1369588A1
Authority
EP
European Patent Office
Prior art keywords
rotor
pockets
pump according
pump
inner rotor
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Withdrawn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
EP03010932A
Other languages
German (de)
French (fr)
Inventor
Sabine Burhenne
Cicero Constantin
Johannes Deichmann
Karsten Meiser
Ralf Mühlhausen
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP1369588A1 publication Critical patent/EP1369588A1/en
Withdrawn legal-status Critical Current

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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
    • 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
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • 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
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • F04C13/005—Removing contaminants, deposits or scale from the pump; Cleaning
    • 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
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/088—Elements in the toothed wheels or the carter for relieving the pressure of fluid imprisoned in the zones of engagement
    • 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
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/084—Toothed wheels
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/20—Manufacture essentially without removing material
    • F04C2230/22—Manufacture essentially without removing material by sintering
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber

Definitions

  • the invention relates to a G-rotor pump, which in particular intended for use as a fuel pump in a motor vehicle is with an external rotor and with a relative to that External rotor movable internal rotor, in the case of a pumping room is limited between the outer rotor and the inner rotor.
  • G-rotor pumps are often called tooth pumps or Eccentric pumps are known and are known from practice.
  • the external rotor has an internal toothing and the inner rotor one of the internal teeth corresponding external toothing.
  • the external toothing has one tooth less than the internal toothing, whereby the funding area is formed.
  • the G-rotor pump used as fuel pump often the problem is that dirt particles between the runners advise and their abrasion and thus to a reduced The service life of the G rotor pump. Therefore, the G rotor pump usually a particularly close-meshed filter. Because dirt particles clog the filter quickly can, this design leads to a very cost-intensive Maintenance of the G rotor pump.
  • a disadvantage of the known G rotor pump is that it is very sensitive to dirt particles in the flow is.
  • the G rotor pump according to the invention also has heavily contaminated liquid to be pumped a particularly long lifespan. Therefore, the G rotor pump does not need one particularly fine-mesh filter. Therefore, the invention G rotor pump especially for use as a fuel pump suitable.
  • the dirt particles collect according to another advantageous one Development of the invention through the flow in the Bags on and can stay there if the bags as recesses arranged in the tooth bases of the external rotor are.
  • the dirt particles can be advantageous according to another Development of the invention simply by the centrifugal forces out of the pockets when the pockets as depressions arranged in the tooth bases of the inner rotor are trained.
  • the G rotor pump according to the invention has a high absorption capacity of dirt particles when the pockets in all Tooth bases of the outer rotor or tooth bases of the inner rotor are arranged.
  • Wear of the edges of the inner rotor and the outer rotor can be according to another advantageous development keep the invention particularly low when the bags over the entire height of the outer rotor and / or the inner rotor extend.
  • the bags can be made according to another advantageous one Development of the invention is particularly easy to manufacture if they are groove-shaped.
  • the bottom of the bags could be acute-angled or angular his.
  • the dirt particle carries it according to another advantageous one Further development of the invention when the bags have a radius in their base area. Also will the notch effect of the pockets was kept particularly low.
  • G rotor pump helps if the external rotor and / or the inner rotor is made of metal.
  • G rotor pump helps if the external rotor and / or the Inner rotor is made of plastic.
  • Figure 1 shows a fuel delivery unit 1 with a housing 3 for receiving an electric motor 4 and the G rotor pump 2.
  • the G rotor pump 2 has a bottom 5 and one from the floor 5 via a spacer 6 to one provided Spaced lid 7.
  • the spacer 6 and the cover 7 are made in one piece here.
  • Between the lid 7 and the bottom 5 is a on a shaft 8 of the Electric motor 4 fixed inner rotor 9 arranged.
  • the Shaft 8 has a rotationally fixed entrainment of the inner rotor 9 Flattening 10 and a paragraph 11. This is the inner rotor 9 can only be connected to the shaft 8 in the position shown.
  • the inner rotor 9 has one shown in Figure 2 External toothing 12, which in an internal toothing 13 of a External rotor 14 engages.
  • the lid 7 has an inlet 15 and the bottom 5 one Outlet 16 of the G rotor pump 2. This will make fuel sucked in through the cover 7 and the G-rotor pump 2 axially flows through.
  • the housing 3 of the fuel delivery unit 1 has a connecting piece 17 for connecting a not shown Management. For clarification are in the drawing the flows of the fuel are marked with arrows.
  • Figure 2 shows a greatly enlarged sectional view through the G-rotor pump 2 of Figure 1 along the line II - II Simplification of the drawing are the housing 3 and the spacer 6 of the G rotor pump 2 not shown.
  • the external toothing 12 of the inner rotor 9 has one tooth less than the internal toothing 13 of the external rotor 14 a delivery chamber 18 through which the liquid to be delivered from the inlet 15 shown in FIG. 1 to the outlet 16 is funded.
  • tooth bases of the internal toothing 13 of the external rotor 14 pockets 19 are arranged, which over extend the entire height of the outer rotor 14. In these Bags 19 collect in the liquid to be pumped Dirt particles. This prevents the Dirt particles on the flanks of the internal teeth 13 and Rub the external teeth 12 together.
  • FIG. 3 shows a sectional view through a further embodiment the G rotor pump 2, which like that from FIG. 2 an inner rotor 20 with an external toothing 21 and one Has outer rotor 22 with an internal toothing 23.
  • This embodiment differs from that of FIG. 2 in that that pockets 24 for holding dirt particles in the Tooth bases of the external toothing 21 of the inner rotor 20 are arranged are. Tooth bases of the internal toothing 23 of the external rotor 22, however, are smooth. Through this design dirt particles are transported into the Pockets 24 of the inner rotor 20 are added and by centrifugal forces flung out again.

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

Abstract

In outer- (14) and/or inner- (9) rotor, there are recesses (19).

Description

Die Erfindung betrifft eine G-Rotorpumpe, welche insbesondere zum Einsatz als Kraftstoffpumpe in einem Kraftfahrzeug vorgesehen ist, mit einem Außenläufer und mit einem relativ zu dem Außenläufer bewegbaren Innenläufer, bei der ein Förderraum zwischen dem Außenläufer und dem Innenläufer begrenzt ist.The invention relates to a G-rotor pump, which in particular intended for use as a fuel pump in a motor vehicle is with an external rotor and with a relative to that External rotor movable internal rotor, in the case of a pumping room is limited between the outer rotor and the inner rotor.

Solche G-Rotorpumpen werden häufig auch als Zahnpumpen oder Exzenterpumpen bezeichnet und sind aus der Praxis bekannt. Bei der aus der Praxis bekannten G-Rotorpumpe hat der Außenläufer eine Innenverzahnung und der Innenläufer eine der Innenverzahnung entsprechende Außenverzahnung. Die Außenverzahnung weist einen Zahn weniger auf als die Innenverzahnung, wodurch der Förderraum gebildet wird. Beim Antrieb des Innenläufers oder des Außenläufers rollt die Außenverzahnung des Innenläufers über die Innenverzahnung des Außenläufers ab. Bei als Kraftstoffpumpe eingesetzter G-Rotorpumpe besteht häufig das Problem, dass Schmutzpartikel zwischen die Läufer geraten und zu deren Abrieb und damit zu einer verminderten Lebensdauer der G-Rotorpumpe führen. Daher wird der G-Rotorpumpe meist ein besonders engmaschiger Filter vorgeschaltet. Da Schmutzpartikel den Filter jedoch schnell zusetzen können, führt diese Gestaltung zu einer sehr kostenintensiven Wartung der G-Rotorpumpe.Such G-rotor pumps are often called tooth pumps or Eccentric pumps are known and are known from practice. In the G rotor pump known from practice, the external rotor has an internal toothing and the inner rotor one of the internal teeth corresponding external toothing. The external toothing has one tooth less than the internal toothing, whereby the funding area is formed. When driving the inner rotor or the external rotor rolls the external toothing of the Internal rotor from the internal teeth of the external rotor. With G-rotor pump used as fuel pump often the problem is that dirt particles between the runners advise and their abrasion and thus to a reduced The service life of the G rotor pump. Therefore, the G rotor pump usually a particularly close-meshed filter. Because dirt particles clog the filter quickly can, this design leads to a very cost-intensive Maintenance of the G rotor pump.

Nachteilig bei der bekannten G-Rotorpumpe ist, dass sie sehr empfindlich gegen in der Strömung befindliche Schmutzpartikel ist.A disadvantage of the known G rotor pump is that it is very sensitive to dirt particles in the flow is.

Dieses Problem wird erfindungsgemäß dadurch gelöst, dass in dem Außenläufer und/oder dem Innenläufer Taschen angeordnet sind. This problem is solved according to the invention in that in the outer rotor and / or the inner rotor pockets arranged are.

Durch diese Gestaltung können sich die Schmutzpartikel in den Taschen sammeln und werden damit von aufeinander abrollenden Zahnflanken der Läufer ferngehalten. Anschließend werden die Schmutzpartikel aus den Taschen ausgespült oder die Taschen werden auf Dauer von den Schmutzpartikeln gefüllt. Die Taschen benötigen dabei mindestens eine der in der Strömung befindlichen Menge der Schmutzpartikel entsprechende Größe. Hierdurch weist die erfindungsgemäße G-Rotorpumpe auch bei stark verschmutzter zu fördernden Flüssigkeit eine besonders lange Lebensdauer auf. Daher benötigt die G-Rotorpumpe keinen besonders engmaschigen Filter. Deshalb ist die erfindungsgemäße G-Rotorpumpe besonders für den Einsatz als Kraftstoffpumpe geeignet.This design allows the dirt particles to get into the Collect bags and are thus rolling from one another Runners' tooth flanks kept away. Then the Dirt particles rinsed out of the pockets or the pockets are permanently filled with dirt particles. The bags need at least one of those in the flow Amount of dirt particles corresponding size. As a result, the G rotor pump according to the invention also has heavily contaminated liquid to be pumped a particularly long lifespan. Therefore, the G rotor pump does not need one particularly fine-mesh filter. Therefore, the invention G rotor pump especially for use as a fuel pump suitable.

Die Schmutzpartikel sammeln sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung durch die Strömung in den Taschen an und können dort verbleiben, wenn die Taschen als in Zahngründen des Außenläufers angeordnete Vertiefungen ausgebildet sind.The dirt particles collect according to another advantageous one Development of the invention through the flow in the Bags on and can stay there if the bags as recesses arranged in the tooth bases of the external rotor are.

Die Schmutzpartikel lassen sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung einfach durch die Zentrifugalkräfte aus den Taschen herausbefördern, wenn die Taschen als in den Zahngründen des Innenläufers angeordnete Vertiefungen ausgebildet sind.The dirt particles can be advantageous according to another Development of the invention simply by the centrifugal forces out of the pockets when the pockets as depressions arranged in the tooth bases of the inner rotor are trained.

Die erfindungsgemäße G-Rotorpumpe weist eine hohe Aufnahmefähigkeit von Schmutzpartikeln auf, wenn die Taschen in sämtlichen Zahngründen des Außenläufers oder Zahngründen des Innenläufers angeordnet sind.The G rotor pump according to the invention has a high absorption capacity of dirt particles when the pockets in all Tooth bases of the outer rotor or tooth bases of the inner rotor are arranged.

Ein Verschleiß der Ränder des Innenläufer und des Außenläufers lässt sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung besonders gering halten, wenn sich die Taschen über die gesamte Höhe des Außenläufers und/oder des Innenläufers erstrecken. Wear of the edges of the inner rotor and the outer rotor can be according to another advantageous development keep the invention particularly low when the bags over the entire height of the outer rotor and / or the inner rotor extend.

Die Taschen lassen sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung besonders einfach fertigen, wenn sie nutförmig gestaltet sind.The bags can be made according to another advantageous one Development of the invention is particularly easy to manufacture if they are groove-shaped.

Der Grund der Taschen könnte spitzwinklig oder eckig gestaltet sein. Zur Vereinfachung der Schmutzsammlung und zur Abführung der Schmutzpartikel trägt es gemäß einer anderen vorteilhaften Weiterbildung der Erfindung bei, wenn die Taschen in ihrem Bodenbereich einen Radius aufweisen. Ebenfalls wird hierbei die Kerbwirkung der Taschen besonders gering gehalten.The bottom of the bags could be acute-angled or angular his. To simplify dirt collection and removal the dirt particle carries it according to another advantageous one Further development of the invention when the bags have a radius in their base area. Also will the notch effect of the pockets was kept particularly low.

Zur weiteren Verlängerung der Lebensdauer der erfindungsgemäßen G-Rotorpumpe trägt es bei, wenn der Außenläufer und/oder der Innenläufer aus Metall gefertigt ist.To further extend the life of the invention G rotor pump helps if the external rotor and / or the inner rotor is made of metal.

Zur Verringerung der Fertigungskosten der erfindungsgemäßen G-Rotorpumpe trägt es bei, wenn der Außenläufer und/oder der Innenläufer aus Kunststoff gefertigt ist.To reduce the manufacturing costs of the invention G rotor pump helps if the external rotor and / or the Inner rotor is made of plastic.

Infolge der Anordnung der Taschen lassen sich der Boden und der Deckel in einer weiteren Ausgestaltung aus Kunststoff und/oder Sintermetall fertigen.Due to the arrangement of the pockets, the bottom and the cover in a further embodiment made of plastic and / or sintered metal.

Die Erfindung lässt zahlreiche Ausführungsformen zu. Zur weiteren Verdeutlichung ihres Grundprinzips sind zwei davon in der Zeichnung dargestellt und werden nachfolgend beschrieben. Diese zeigt in

Fig. 1
einen Längsschnitt durch eine Kraftstoff-Fördereinheit mit einer erfindungsgemäßen G-Rotorpumpe,
Fig.2
stark vergrößert eine Schnittdarstellung durch die G-Rotorpumpe aus Figur 1 entlang der Linie II - II,
Fig.3
eine Schnittdarstellung durch eine weitere Ausführungsform der G-Rotorpumpe.
The invention permits numerous embodiments. To further clarify its basic principle, two of them are shown in the drawing and are described below. This shows in
Fig. 1
2 shows a longitudinal section through a fuel delivery unit with a G-rotor pump according to the invention,
Fig.2
greatly enlarged a sectional view through the G-rotor pump of Figure 1 along the line II - II,
Figure 3
a sectional view through a further embodiment of the G-rotor pump.

Figur 1 zeigt eine Kraftstoff-Fördereinheit 1 mit einem Gehäuse 3 zur Aufnahme eines Elektromotors 4 und der G-Rotorpumpe 2. Die G-Rotorpumpe 2 weist einen Boden 5 und einen von dem Boden 5 über einen Abstandhalter 6 auf einen vorgesehenen Abstand gehaltenen Deckel 7 auf. Der Abstandhalter 6 und der Deckel 7 sind hier einstückig gefertigt. Zwischen dem Deckel 7 und dem Boden 5 ist ein auf einer Welle 8 des Elektromotors 4 befestigter Innenläufer 9 angeordnet. Die Welle 8 hat zur drehfesten Mitnahme des Innenläufers 9 eine Abflachung 10 und einen Absatz 11. Hierdurch ist der Innenläufer 9 nur in der eingezeichneten Lage mit der Welle 8 verbindbar. Der Innenläufer 9 weist eine in Figur 2 dargestellte Außenverzahnung 12 auf, welche in eine Innenverzahnung 13 eines Außenläufers 14 eingreift.Figure 1 shows a fuel delivery unit 1 with a housing 3 for receiving an electric motor 4 and the G rotor pump 2. The G rotor pump 2 has a bottom 5 and one from the floor 5 via a spacer 6 to one provided Spaced lid 7. The spacer 6 and the cover 7 are made in one piece here. Between the lid 7 and the bottom 5 is a on a shaft 8 of the Electric motor 4 fixed inner rotor 9 arranged. The Shaft 8 has a rotationally fixed entrainment of the inner rotor 9 Flattening 10 and a paragraph 11. This is the inner rotor 9 can only be connected to the shaft 8 in the position shown. The inner rotor 9 has one shown in Figure 2 External toothing 12, which in an internal toothing 13 of a External rotor 14 engages.

Der Deckel 7 weist einen Einlass 15 und der Boden 5 einen Auslass 16 der G-Rotorpumpe 2 auf. Hierdurch wird Kraftstoff über den Deckel 7 angesaugt und die G-Rotorpumpe 2 axial durchströmt. Das Gehäuse 3 der Kraftstoff-Fördereinheit 1 hat einen Anschlussstutzen 17 zum Anschluss einer nicht dargestellten Leitung. Zur Verdeutlichung sind in der Zeichnung die Strömungen des Kraftstoffs mit Pfeilen gekennzeichnet.The lid 7 has an inlet 15 and the bottom 5 one Outlet 16 of the G rotor pump 2. This will make fuel sucked in through the cover 7 and the G-rotor pump 2 axially flows through. The housing 3 of the fuel delivery unit 1 has a connecting piece 17 for connecting a not shown Management. For clarification are in the drawing the flows of the fuel are marked with arrows.

Figur 2 zeigt stark vergrößert eine Schnittdarstellung durch die G-Rotorpumpe 2 aus Figur 1 entlang der Linie II - II. Zur Vereinfachung der Zeichnung sind das Gehäuse 3 und der Abstandhalter 6 der G-Rotorpumpe 2 nicht dargestellt. Die Außenverzahnung 12 des Innenläufers 9 hat einen Zahn weniger als die Innenverzahnung 13 des Außenläufers 14. Damit entsteht ein Förderraum 18, durch den die zu fördernde Flüssigkeit von dem in Figur 1 dargestellten Einlass 15 zu dem Auslass 16 gefördert wird. In Figur 2 sind zudem Drehrichtungen des Innenläufers 9 und des Außenläufers 14 mit Pfeilen gekennzeichnet. In Zahngründen der Innenverzahnung 13 des Außenläufers 14 sind Taschen 19 angeordnet, welche sich über die gesamte Höhe des Außenläufers 14 erstrecken. In diesen Taschen 19 sammeln sich in der zu fördernden Flüssigkeit befindliche Schmutzpartikel an. Damit wird verhindert, dass die Schmutzpartikel an den Flanken der Innenverzahnung 13 und der Außenverzahnung 12 aneinander reiben.Figure 2 shows a greatly enlarged sectional view through the G-rotor pump 2 of Figure 1 along the line II - II Simplification of the drawing are the housing 3 and the spacer 6 of the G rotor pump 2 not shown. The external toothing 12 of the inner rotor 9 has one tooth less than the internal toothing 13 of the external rotor 14 a delivery chamber 18 through which the liquid to be delivered from the inlet 15 shown in FIG. 1 to the outlet 16 is funded. In Figure 2 there are also directions of rotation the inner rotor 9 and the outer rotor 14 marked with arrows. In tooth bases of the internal toothing 13 of the external rotor 14 pockets 19 are arranged, which over extend the entire height of the outer rotor 14. In these Bags 19 collect in the liquid to be pumped Dirt particles. This prevents the Dirt particles on the flanks of the internal teeth 13 and Rub the external teeth 12 together.

Figur 3 zeigt eine Schnittdarstellung durch eine weitere Ausführungsform der G-Rotorpumpe 2, welche wie die aus Figur 2 einen Innenläufer 20 mit einer Außenverzahnung 21 und einen Außenläufer 22 mit einer Innenverzahnung 23 hat. Diese Ausführungsform unterscheidet sich von der aus Figur 2 dadurch, dass Taschen 24 zur Aufnahme von Schmutzpartikeln in den Zahngründen der Außenverzahnung 21 des Innenläufers 20 angeordnet sind. Zahngründe der Innenverzahnung 23 des Außenläufers 22 sind hingegen glatt gestaltet. Durch diese Gestaltung werden beim Fördern von Flüssigkeit Schmutzpartikel in den Taschen 24 des Innenläufers 20 aufgenommen und durch Zentrifugalkräfte wieder herausgeschleudert.Figure 3 shows a sectional view through a further embodiment the G rotor pump 2, which like that from FIG. 2 an inner rotor 20 with an external toothing 21 and one Has outer rotor 22 with an internal toothing 23. This embodiment differs from that of FIG. 2 in that that pockets 24 for holding dirt particles in the Tooth bases of the external toothing 21 of the inner rotor 20 are arranged are. Tooth bases of the internal toothing 23 of the external rotor 22, however, are smooth. Through this design dirt particles are transported into the Pockets 24 of the inner rotor 20 are added and by centrifugal forces flung out again.

Claims (10)

G-Rotorpumpe, welche insbesondere zum Einsatz als Kraftstoffpumpe in einem Kraftfahrzeug vorgesehen ist, mit einem Außenläufer und mit einem relativ zu dem Außenläufer bewegbaren Innenläufer, bei der ein Förderraum zwischen dem Außenläufer und dem Innenläufer begrenzt ist, dadurch gekennzeichnet, dass in dem Außenläufer (14, 22) und/oder dem Innenläufer (9, 20) Taschen (19, 24) angeordnet sind.G-rotor pump, which is intended in particular for use as a fuel pump in a motor vehicle, with an outer rotor and with an inner rotor movable relative to the outer rotor, in which a delivery space between the outer rotor and the inner rotor is limited, characterized in that in the outer rotor ( 14, 22) and / or the inner rotor (9, 20) pockets (19, 24) are arranged. G-Rotorpumpe nach Anspruch 1, dadurch gekennzeichnet, dass die Taschen (19) als in Zahngründen des Außenläufers (14) angeordnete Vertiefungen ausgebildet sind.G-rotor pump according to claim 1, characterized in that the pockets (19) are formed as recesses arranged in the tooth bases of the external rotor (14). G-Rotorpumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Taschen (24) als in Zahngründen des Innenläufers (20) angeordnete Vertiefungen ausgebildet sind.G-rotor pump according to claim 1 or 2, characterized in that the pockets (24) are formed as recesses arranged in the tooth bases of the inner rotor (20). G-Rotorpumpe nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Taschen (19, 24) in sämtlichen Zahngründen des Außenläufers (14, 22) oder Zahngründen des Innenläufers (9, 20) angeordnet sind.G-rotor pump according to at least one of the preceding claims, characterized in that the pockets (19, 24) are arranged in all tooth bases of the outer rotor (14, 22) or tooth bases of the inner rotor (9, 20). G-Rotorpumpe nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sich die Taschen (19, 24) über die gesamte Höhe des Außenläufers (14, 22) und/oder des Innenläufers (9, 20) erstrecken.G-rotor pump according to at least one of the preceding claims, characterized in that the pockets (19, 24) extend over the entire height of the outer rotor (14, 22) and / or the inner rotor (9, 20). G-Rotorpumpe nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Taschen (19, 24) nutförmig gestaltet sind.G-rotor pump according to at least one of the preceding claims, characterized in that the pockets (19, 24) are groove-shaped. G-Rotorpumpe nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Taschen (19, 24) in ihrem Bodenbereich einen Radius aufweisen. G-rotor pump according to at least one of the preceding claims, characterized in that the pockets (19, 24) have a radius in their base region. G-Rotorpumpe nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Außenläufer (14, 22) und/oder der Innenläufer (9, 20) aus Metall gefertigt ist.G-rotor pump according to at least one of the preceding claims, characterized in that the outer rotor (14, 22) and / or the inner rotor (9, 20) is made of metal. G-Rotorpumpe nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Außenläufer (14, 22) und/oder der Innenläufer (9, 20) aus Kunststoff gefertigt ist.G-rotor pump according to at least one of the preceding claims, characterized in that the outer rotor (14, 22) and / or the inner rotor (9, 20) is made of plastic. G-Rotorpumpe nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Bodenplatte (5) und der Deckel (6, 7) des G-Rotors aus Kunststoff und/oder Sintermetall gefertigt sind.G-rotor pump according to at least one of the preceding claims, characterized in that the base plate (5) and the cover (6, 7) of the G-rotor are made of plastic and / or sintered metal.
EP03010932A 2002-06-04 2003-05-15 Gerotor pump Withdrawn EP1369588A1 (en)

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DE10224784 2002-06-04
DE10224784A DE10224784A1 (en) 2002-06-04 2002-06-04 G-rotor pump

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004113728A1 (en) * 2003-06-16 2004-12-29 Siemens Aktiengesellschaft G-rotor pump
WO2005066502A1 (en) * 2003-12-25 2005-07-21 Mtsubishi Materials Pmg Corporation Internal gear pump
WO2009027136A1 (en) * 2007-08-29 2009-03-05 Robert Bosch Gmbh Delivery unit
CN102654125A (en) * 2011-03-03 2012-09-05 Ti集团自动推进系统有限责任公司 Positive displacement fluid pump
WO2011107307A3 (en) * 2010-03-04 2013-01-24 Robert Bosch Gmbh Internal gear pump
WO2016149246A1 (en) * 2015-03-16 2016-09-22 Saudi Arabian Oil Company Equal-walled gerotor pump for wellbore applications
CN102654125B (en) * 2011-03-03 2016-11-30 Ti集团自动推进系统有限责任公司 positive displacement fluid pump
US11371326B2 (en) 2020-06-01 2022-06-28 Saudi Arabian Oil Company Downhole pump with switched reluctance motor
US11499563B2 (en) 2020-08-24 2022-11-15 Saudi Arabian Oil Company Self-balancing thrust disk
US11591899B2 (en) 2021-04-05 2023-02-28 Saudi Arabian Oil Company Wellbore density meter using a rotor and diffuser
US11644351B2 (en) 2021-03-19 2023-05-09 Saudi Arabian Oil Company Multiphase flow and salinity meter with dual opposite handed helical resonators
US11913464B2 (en) 2021-04-15 2024-02-27 Saudi Arabian Oil Company Lubricating an electric submersible pump
US11920469B2 (en) 2020-09-08 2024-03-05 Saudi Arabian Oil Company Determining fluid parameters
US11994016B2 (en) 2021-12-09 2024-05-28 Saudi Arabian Oil Company Downhole phase separation in deviated wells
US12085687B2 (en) 2022-01-10 2024-09-10 Saudi Arabian Oil Company Model-constrained multi-phase virtual flow metering and forecasting with machine learning

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006233771A (en) 2005-02-22 2006-09-07 Mitsubishi Materials Pmg Corp Pump rotor
DE102005021597A1 (en) * 2005-05-10 2006-11-16 Siemens Ag Fuel pump
GB0620646D0 (en) * 2006-10-18 2006-11-29 Concentric Vfp Ltd Pumps with filling slots
DE102015211785A1 (en) * 2015-06-25 2016-12-29 Bühler Motor GmbH DC motor for a gear pump
US10584701B2 (en) 2017-03-13 2020-03-10 Delphi Technologies Ip Limited Fluid pump with rotating pumping element wear reduction

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2428181A (en) * 1944-10-27 1947-09-30 Frank C Sibley Rotary gear pump
DE4200987A1 (en) * 1992-01-16 1993-07-22 Vittorio Varisco Gear pump for a variety of liquids - has steel or PTFE disc between rotor and runner
EP0552443A1 (en) * 1992-01-15 1993-07-28 Siegfried A. Dipl.-Ing. Eisenmann Gear machine
DE19816173A1 (en) * 1997-04-10 1998-10-15 Walbro Corp Motor-driven fuel pump
DE19717295A1 (en) * 1997-04-24 1998-10-29 Danfoss As Fluid machine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2344628A (en) * 1940-12-26 1944-03-21 Gar Wood Ind Inc Gear pump
US3289542A (en) * 1963-10-29 1966-12-06 Lawrence Machine & Mfg Company Hydraulic motor or pump
DE3614626A1 (en) * 1985-06-07 1986-12-11 Mannesmann Rexroth GmbH, 8770 Lohr Gear machine
DE4021500C3 (en) * 1990-07-05 1998-10-22 Mannesmann Vdo Ag Delivery unit, in particular for delivering fuel
DE19726794A1 (en) * 1997-06-24 1999-01-07 Elektra Beckum Ag Water high pressure cleaning device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2428181A (en) * 1944-10-27 1947-09-30 Frank C Sibley Rotary gear pump
EP0552443A1 (en) * 1992-01-15 1993-07-28 Siegfried A. Dipl.-Ing. Eisenmann Gear machine
DE4200987A1 (en) * 1992-01-16 1993-07-22 Vittorio Varisco Gear pump for a variety of liquids - has steel or PTFE disc between rotor and runner
DE19816173A1 (en) * 1997-04-10 1998-10-15 Walbro Corp Motor-driven fuel pump
DE19717295A1 (en) * 1997-04-24 1998-10-29 Danfoss As Fluid machine

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7591637B2 (en) 2003-06-16 2009-09-22 Siemens Aktiengesellschaft G-rotor pump
WO2004113728A1 (en) * 2003-06-16 2004-12-29 Siemens Aktiengesellschaft G-rotor pump
WO2005066502A1 (en) * 2003-12-25 2005-07-21 Mtsubishi Materials Pmg Corporation Internal gear pump
WO2009027136A1 (en) * 2007-08-29 2009-03-05 Robert Bosch Gmbh Delivery unit
WO2011107307A3 (en) * 2010-03-04 2013-01-24 Robert Bosch Gmbh Internal gear pump
CN102654125B (en) * 2011-03-03 2016-11-30 Ti集团自动推进系统有限责任公司 positive displacement fluid pump
CN102654125A (en) * 2011-03-03 2012-09-05 Ti集团自动推进系统有限责任公司 Positive displacement fluid pump
EP2495442A3 (en) * 2011-03-03 2014-04-09 TI Group Automotive Systems, L.L.C. Internal gear pump
US8840385B2 (en) 2011-03-03 2014-09-23 Ti Group Automotive Systems, L.L.C. Positive displacement fluid pump
US10138885B2 (en) 2015-03-16 2018-11-27 Saudi Arabian Oil Company Equal-walled gerotor pump for wellbore applications
WO2016149246A1 (en) * 2015-03-16 2016-09-22 Saudi Arabian Oil Company Equal-walled gerotor pump for wellbore applications
US10584702B2 (en) 2015-03-16 2020-03-10 Saudi Arabian Oil Company Equal-walled gerotor pump for wellbore applications
US11162493B2 (en) 2015-03-16 2021-11-02 Saudi Arabian Oil Company Equal-walled gerotor pump for wellbore applications
US11434905B2 (en) 2015-03-16 2022-09-06 Saudi Arabian Oil Company Equal-walled gerotor pump for wellbore applications
US11371326B2 (en) 2020-06-01 2022-06-28 Saudi Arabian Oil Company Downhole pump with switched reluctance motor
US11499563B2 (en) 2020-08-24 2022-11-15 Saudi Arabian Oil Company Self-balancing thrust disk
US11920469B2 (en) 2020-09-08 2024-03-05 Saudi Arabian Oil Company Determining fluid parameters
US11644351B2 (en) 2021-03-19 2023-05-09 Saudi Arabian Oil Company Multiphase flow and salinity meter with dual opposite handed helical resonators
US11591899B2 (en) 2021-04-05 2023-02-28 Saudi Arabian Oil Company Wellbore density meter using a rotor and diffuser
US11913464B2 (en) 2021-04-15 2024-02-27 Saudi Arabian Oil Company Lubricating an electric submersible pump
US11994016B2 (en) 2021-12-09 2024-05-28 Saudi Arabian Oil Company Downhole phase separation in deviated wells
US12085687B2 (en) 2022-01-10 2024-09-10 Saudi Arabian Oil Company Model-constrained multi-phase virtual flow metering and forecasting with machine learning

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US20040037726A1 (en) 2004-02-26
DE10224784A1 (en) 2003-12-18
CN1488859A (en) 2004-04-14
JP2004011641A (en) 2004-01-15

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