EP1633979A1 - G-rotor pump - Google Patents

G-rotor pump

Info

Publication number
EP1633979A1
EP1633979A1 EP04741634A EP04741634A EP1633979A1 EP 1633979 A1 EP1633979 A1 EP 1633979A1 EP 04741634 A EP04741634 A EP 04741634A EP 04741634 A EP04741634 A EP 04741634A EP 1633979 A1 EP1633979 A1 EP 1633979A1
Authority
EP
European Patent Office
Prior art keywords
rotor
cover
pump
base
rotor pump
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.)
Ceased
Application number
EP04741634A
Other languages
German (de)
French (fr)
Inventor
Ralf Mühlhausen
Rolf Reinhardt
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.)
Continental Automotive GmbH
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 EP1633979A1 publication Critical patent/EP1633979A1/en
Ceased 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/102—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member the two members rotating simultaneously around their respective axes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • 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
    • 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
    • F04C2/086—Carter
    • 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 displacement pump designed as a G-rotor pump for delivering fuel in a motor vehicle with a driven G-rotor arranged between a base and a cover of a pump housing and with a spacer arranged between the base and the cover.
  • G rotor pumps are usually assembled with an electric motor to form a delivery unit and are known in practice.
  • the known G rotor pump has an inlet channel in the cover and an outlet channel in the bottom facing the electric motor. This flows axially through the G rotor pump.
  • the spacer is essentially ring-shaped, surrounds the G-rotor and holds the lid at a designated distance from the floor. So that the bottom and the lid can be braced against each other. The lid that
  • the base and the spacer are made of ceramic with a particularly high surface quality.
  • the high surface quality ensures that an overflow of the delivered fuel from the area of the outlet to the area of the inlet is avoided.
  • a disadvantage of the known G rotor pump is that the pump housing is designed to be very complex and thus has components which are cost-intensive to manufacture.
  • the invention is based on the problem of designing a G rotor pump of the type mentioned at the outset in such a way that it can be manufactured particularly cost-effectively.
  • this problem is solved in that the base and / or the cover are / are made of plastic.
  • the pump housing can be assembled from components that can be manufactured particularly cost-effectively.
  • the G rotor pump according to the invention can thereby be manufactured particularly cost-effectively.
  • Another advantage of the G-rotor pump according to the invention is that noises of the G-rotor are particularly strongly dampened by the plastic components of the pump housing.
  • the high surface quality required for the reliable operation of the G-rotor pump according to the invention could be achieved, for example, by coating the bottom and / or the cover. It contributes to a further reduction in the manufacturing costs of the G-rotor pump according to the invention [however, if the base and / or the cover are / are lobed on their side opposite the G-rotor. To simplify the assembly of the G-rotor pump according to the invention, it helps if the spacer is made in one piece with the cover arranged on the side of the G-rotor facing away from an electric drive. As a result, the base arranged on the side of the G rotor facing an electric drive can be designed to be flat. This contributes to a further reduction in the manufacturing costs of the G rotor pump according to the invention.
  • this shows a longitudinal section through a fuel demand unit 1 with a device according to the invention
  • the fuel delivery unit 1 has a housing 3 for accommodating an electric motor 4 and the G-rotor pump 2.
  • the G-rotor pump 2 has a base 5 and a cover 7, which is kept at a predetermined distance from the base 5 via a spacer 6.
  • the spacer 6 and the cover 7 are made in one piece here.
  • a G rotor 9, which is fastened on a shaft 8 of the electric motor 4, is arranged between the cover 7 and the base 5.
  • the shaft 8 has a flattened portion 10 for the rotationally fixed entrainment of the G rotor 9.
  • the shaft 8 also has a shoulder 11 in the region of the G rotor 9. As a result, the G rotor 9 can only be connected to the shaft 8 in the position shown.
  • the cover 7 has an inlet 12 and the base 5 has an outlet 13 of the G rotor pump 2.
  • fuel is drawn in via the cover 7 and the G-rotor pump 2 flows axially.
  • the housing 3 of the fuel delivery unit 1 has a connecting piece 14 for connecting a line, not shown. For clarity, the flows of the fuel are marked with arrows in the drawing.
  • the cover 7 and the base 5 are made of plastic and lapped on their side facing the G rotor 9. As a result, the cover 7 and the base 5 have a particularly high surface quality and are able to reliably dampen noise.
  • the G-rotor pump 2 has two screws 15 which pretension the cover 7 against the base 5.
  • the cover 7 is biased against the floor 5 via the housing 3 of the fuel delivery unit. The use of the screws 15 can thus be dispensed with.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Rotary Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Disclosed is a G-rotor pump (2) in which a lid (7) and a bottom (5) of a pump housing are made of plastic. A spacer (6) that supports the bottom (5) is produced as a single piece with the lid (7), whereby the G-rotor pump (2) can be embodied in a particularly inexpensive manner.

Description

Beschreibungdescription
G-ROTORPUMPE Die Erfindung betrifft eine als G-Rotorpumpe ausgebildete Verdrängerpumpe zur Förderung von Kraftstoff in einem Kraftfahrzeug mit einem angetriebenen, zwischen einem Boden und einem Deckel eines Pumpengehäuses angeordneten G-Rotor und mit einem zwischen dem Boden und dem Deckel angeordneten Ab- standhalter.G-ROTOR PUMP The invention relates to a displacement pump designed as a G-rotor pump for delivering fuel in a motor vehicle with a driven G-rotor arranged between a base and a cover of a pump housing and with a spacer arranged between the base and the cover.
Solche G-Rotorpumpen werden meist mit einem Elektromotor zu einer Fördereinheit zusammengesetzt und sind aus der Praxis bekannt . Die bekannte G-Rotorpumpe hat im Deckel einen Ein- lasskanal und im dem Elektromotor zugewandten Boden einen Auslasskanal. Hierdurch wird die G-Rotorpumpe axial durchströmt. Der Abstandhalter ist im Wesentlichen ringförmig, den G-Rotor umschließend gestaltet und hält den Deckel auf einem vorgesehenen Abstand zum Boden. Damit können der Boden und der Deckel gegeneinander verspannt sein. Der Deckel, derSuch G rotor pumps are usually assembled with an electric motor to form a delivery unit and are known in practice. The known G rotor pump has an inlet channel in the cover and an outlet channel in the bottom facing the electric motor. This flows axially through the G rotor pump. The spacer is essentially ring-shaped, surrounds the G-rotor and holds the lid at a designated distance from the floor. So that the bottom and the lid can be braced against each other. The lid that
G-Rotor, der Boden und der Abstandhalter sind aus Keramik mit einer besonders hohen Oberflächengüte gefertigt. Durch die hohe Oberflächengüte wird sichergestellt, dass ein Überströmen des geförderten Kraftstoffs von dem Bereich des Auslasses zu dem Bereich des Einlasses vermieden wird.G-rotor, the base and the spacer are made of ceramic with a particularly high surface quality. The high surface quality ensures that an overflow of the delivered fuel from the area of the outlet to the area of the inlet is avoided.
Nachteilig bei der bekannten G-Rotorpumpe ist, dass das Pumpengehäuse sehr aufwändig gestaltet ist und damit kostenintensiv zu fertigende Bauteile aufweist.A disadvantage of the known G rotor pump is that the pump housing is designed to be very complex and thus has components which are cost-intensive to manufacture.
Der Erfindung liegt das Problem zugrunde, eine G-Rotorpumpe der eingangs genannten Art so zu gestalten, dass sie besonders kostengünstig zu fertigen ist. The invention is based on the problem of designing a G rotor pump of the type mentioned at the outset in such a way that it can be manufactured particularly cost-effectively.
Dieses Problem wird erfmdungsgemaß dadurch gelost, dass der Boden und/oder der Deckel aus Kunststoff gefertigt sind/ist.According to the invention, this problem is solved in that the base and / or the cover are / are made of plastic.
Durch diese Gestaltung lasst sich das Pumpengehause aus be- sonders kostengünstig zu fertigenden Bauteilen zusammensetzen. Die erfmdungsgemaße G-Rotorpumpe lasst sich hierdurch besonders kostengünstig fertigen. Ein weiterer Vorteil der erfmdungsgemaßen G-Rotorpumpe besteht darin, dass Geräusche des G-Rotors durch die aus Kunststoff gefertigten Bauteile des Pumpengehauses besonders stark gedampft werden.With this design, the pump housing can be assembled from components that can be manufactured particularly cost-effectively. The G rotor pump according to the invention can thereby be manufactured particularly cost-effectively. Another advantage of the G-rotor pump according to the invention is that noises of the G-rotor are particularly strongly dampened by the plastic components of the pump housing.
Die für den zuverlässigen Betrieb der erfmdungsgemaßen G-Rotorpumpe erforderliche hohe Oberflachengute konnte beispielsweise durch eine Beschichtung des Bodens und/oder des Deckels erreicht werden. Zur weiteren Verringerung der Fertigungskosten der erfmdungsgemaßen G-Rotorpumpe tragt es [jedoch bei, wenn der Boden und/oder der Deckel auf ihrer dem G-Rotor gegen berstehenden Seite gelappt sind/ist. Zur Vereinfachung der Montage der erfmdungsgemaßen G-Rotorpumpe tragt es bei, wenn der Abstandhalter emstuckig mit dem auf der einem elektrischen Antrieb abgewandten Seite des G-Rotors angeordneten Deckel gefertigt ist. Hierdurch kann der auf der einem elektrischen Antrieb zugewandten Seite des G-Rotors angeordnete Boden eben gestaltet sein. Dies tragt zur weiteren Verringerung der Fertigungskosten der erfmdungsgemaßen G-Rotorpumpe bei.The high surface quality required for the reliable operation of the G-rotor pump according to the invention could be achieved, for example, by coating the bottom and / or the cover. It contributes to a further reduction in the manufacturing costs of the G-rotor pump according to the invention [however, if the base and / or the cover are / are lobed on their side opposite the G-rotor. To simplify the assembly of the G-rotor pump according to the invention, it helps if the spacer is made in one piece with the cover arranged on the side of the G-rotor facing away from an electric drive. As a result, the base arranged on the side of the G rotor facing an electric drive can be designed to be flat. This contributes to a further reduction in the manufacturing costs of the G rotor pump according to the invention.
Die Erfindung lasst zahlreiche Ausfuhrungsformen zu. Zur we - teren Verdeutlichung ihres Grundprinzips ist eine davon m der Zeichnung dargestellt und wird nachfolgend beschrieben.The invention permits numerous embodiments. To further clarify its basic principle, one of these is shown in the drawing and is described below.
Diese zeigt in einer einzigen Figur einen Längsschnitt durch eine KraftStofffordereinheit 1 mit einer erfmdungsgemaßenIn a single figure, this shows a longitudinal section through a fuel demand unit 1 with a device according to the invention
G-Rotorpumpe 2. G rotor pump 2.
Die Kraftstofffördereinheit 1 hat ein 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 gehalte- nen 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 G-Rotor 9 angeordnet. Die Welle 8 weist zur drehfesten Mitnahme des G-Rotors 9 eine Abflachung 10 auf. Die Welle 8 hat zudem im Bereich des G-Rotors 9 einen Absatz 11. Hierdurch ist der G-Rotor 9 nur in der eingezeichneten Lage mit der Welle 8 verbindbar. Der Deckel 7 weist einen Einlass 12 und der Boden 5 einen Auslass 13 der G-Rotorpumpe 2 auf. Hierdurch wird Kraftstoff über den Deckel 7 angesaugt und die G-Rotorpumpe 2 axial durchströmt. Das Gehäuse 3 der Kraftstofffördereinheit 1 hat einen Anschlussstutzen 14 zum An- schluss einer nicht dargestellten Leitung. Zur Verdeutlichung sind in der Zeichnung die Strömungen des Kraftstoffs mit Pfeilen gekennzeichnet.The fuel delivery unit 1 has a housing 3 for accommodating an electric motor 4 and the G-rotor pump 2. The G-rotor pump 2 has a base 5 and a cover 7, which is kept at a predetermined distance from the base 5 via a spacer 6. The spacer 6 and the cover 7 are made in one piece here. A G rotor 9, which is fastened on a shaft 8 of the electric motor 4, is arranged between the cover 7 and the base 5. The shaft 8 has a flattened portion 10 for the rotationally fixed entrainment of the G rotor 9. The shaft 8 also has a shoulder 11 in the region of the G rotor 9. As a result, the G rotor 9 can only be connected to the shaft 8 in the position shown. The cover 7 has an inlet 12 and the base 5 has an outlet 13 of the G rotor pump 2. As a result, fuel is drawn in via the cover 7 and the G-rotor pump 2 flows axially. The housing 3 of the fuel delivery unit 1 has a connecting piece 14 for connecting a line, not shown. For clarity, the flows of the fuel are marked with arrows in the drawing.
Der Deckel 7 und der Boden 5 sind aus Kunststoff gefertigt und auf ihrer dem G-Rotor 9 zugewandten Seite geläppt. Hierdurch weisen der Deckel 7 und der Boden 5 eine besonders hohe Oberflächengüte auf und vermögen Geräusche zuverlässig zu dämmen .The cover 7 and the base 5 are made of plastic and lapped on their side facing the G rotor 9. As a result, the cover 7 and the base 5 have a particularly high surface quality and are able to reliably dampen noise.
Weiterhin hat die G-Rotorpumpe 2 zwei Schrauben 15, die den Deckel 7 gegen den Boden 5 vorspannen. In einer alternativen, nicht dargestellten Ausführungsform ist der Deckel 7 über das Gehäuse 3 der Kraftstofffördereinheit gegen den Boden 5 vorgespannt. Damit lässt sich auf die Verwendung der Schrauben 15 verzichten. Furthermore, the G-rotor pump 2 has two screws 15 which pretension the cover 7 against the base 5. In an alternative embodiment, not shown, the cover 7 is biased against the floor 5 via the housing 3 of the fuel delivery unit. The use of the screws 15 can thus be dispensed with.

Claims

Patentansprüche claims
1. Als G-Rotorpumpe ausgebildete Verdrängerpumpe zur Förderung von Kraftstoff in einem Kraftfahrzeug mit einem ange- triebenen, zwischen einem Boden und einem Deckel eines1. A positive displacement pump designed as a G rotor pump for delivering fuel in a motor vehicle with a driven one between a floor and a cover of a motor vehicle
Pumpengehäuses angeordneten G-Rotor und mit einem zwischen dem Boden und dem Deckel angeordneten Abstandhalter, dadurch gekenn zei chnet , dass der Boden (5) und/oder der Deckel (7) aus Kunststoff gefertigt sind/ist.Pump housing arranged G-rotor and with a spacer arranged between the base and the cover, characterized in that the base (5) and / or the cover (7) are / are made of plastic.
2. G-Rotorpu pe nach Anspruch 1, dadu rch gekennz ei c net , dass der Boden (5) und/oder der Deckel2. G-Rotorpu pe according to claim 1, dadu rch gekennz ei c net that the bottom (5) and / or the lid
(7) auf ihrer dem G-Rotor (9) gegenüberstehenden Seite ge- läppt sind/ist.(7) are lapped on their side opposite the G rotor (9).
3. G-Rotorpumpe nach Anspruch 1 oder 2, dadurch gek enn z e i chnet , dass der Abstandhalter (6) einstückig mit dem auf der einem elektrischen Antrieb ab- gewandten Seite des G-Rotors (9) angeordneten Deckel (7) gefertigt ist. 3. G-rotor pump according to claim 1 or 2, characterized in that the spacer (6) is made in one piece with the cover (7) arranged on the side of the G-rotor (9) facing away from an electric drive.
EP04741634A 2003-06-16 2004-05-24 G-rotor pump Ceased EP1633979A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10327321A DE10327321A1 (en) 2003-06-16 2003-06-16 As a G-rotor pump trained positive displacement pump
PCT/EP2004/050895 WO2004113728A1 (en) 2003-06-16 2004-05-24 G-rotor pump

Publications (1)

Publication Number Publication Date
EP1633979A1 true EP1633979A1 (en) 2006-03-15

Family

ID=33520673

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04741634A Ceased EP1633979A1 (en) 2003-06-16 2004-05-24 G-rotor pump

Country Status (7)

Country Link
US (1) US7591637B2 (en)
EP (1) EP1633979A1 (en)
JP (1) JP2006527809A (en)
KR (1) KR20060015734A (en)
CN (1) CN1802507B (en)
DE (1) DE10327321A1 (en)
WO (1) WO2004113728A1 (en)

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BG834Y1 (en) * 2003-10-14 2006-09-29 ДАМЯНОВ Дамян Hydraulic anal sphincter
BG64918B1 (en) * 2003-10-13 2006-09-29 Дамян ДАМЯНОВ Pneumatic anal sphincter

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US20140314591A1 (en) * 2013-04-18 2014-10-23 Delphi Technologies, Inc. Fluid pump
USD749657S1 (en) * 2014-11-19 2016-02-16 American Axle & Manufacturing, Inc. Gerotor housing
WO2018009671A1 (en) 2016-07-07 2018-01-11 Stern Mark S Spinous laminar clamp assembly
US10584701B2 (en) 2017-03-13 2020-03-10 Delphi Technologies Ip Limited Fluid pump with rotating pumping element wear reduction
US10808695B2 (en) 2017-12-11 2020-10-20 Hamilton Sundstrand Corporation Reduction of cavitation in fuel pumps

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BG64918B1 (en) * 2003-10-13 2006-09-29 Дамян ДАМЯНОВ Pneumatic anal sphincter
BG834Y1 (en) * 2003-10-14 2006-09-29 ДАМЯНОВ Дамян Hydraulic anal sphincter

Also Published As

Publication number Publication date
JP2006527809A (en) 2006-12-07
US20060140790A1 (en) 2006-06-29
CN1802507B (en) 2010-07-28
US7591637B2 (en) 2009-09-22
CN1802507A (en) 2006-07-12
WO2004113728A1 (en) 2004-12-29
KR20060015734A (en) 2006-02-20
DE10327321A1 (en) 2005-01-13

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