EP1348078A1 - Feed pump - Google Patents
Feed pumpInfo
- Publication number
- EP1348078A1 EP1348078A1 EP01984706A EP01984706A EP1348078A1 EP 1348078 A1 EP1348078 A1 EP 1348078A1 EP 01984706 A EP01984706 A EP 01984706A EP 01984706 A EP01984706 A EP 01984706A EP 1348078 A1 EP1348078 A1 EP 1348078A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- impeller
- feed pump
- chambers
- delivery
- pump according
- 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- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D5/00—Pumps with circumferential or transverse flow
- F04D5/002—Regenerative pumps
- F04D5/003—Regenerative pumps of multistage type
- F04D5/006—Regenerative pumps of multistage type the stages being axially offset
Definitions
- the invention relates to a feed pump with a driven impeller which rotates in a pump housing and has at least one ring of vane chambers in its end faces and has at least one partially annular channel which is arranged in the region of the guide vanes in the pump housing and which has a delivery chamber with the vane chambers forms an inlet duct to an outlet duct.
- feed pumps are often used, for example, in today's motor vehicles to deliver fuel or window cleaning fluid and are known from practice.
- the impeller of the known feed pump is attached to a shaft of an electric motor.
- the feed pump has pockets connected to one another in a radially inner region of the impeller, as seen from the blade chambers, for collecting the fluid to be conveyed by the pump. These pockets form an axial slide bearing with the fluid.
- a disadvantage of the known feed pump is that the impeller and thus the shaft driving the impeller are very heavily loaded in the radial direction, since the pressure inside the delivery chamber in the area of the outlet channel is substantially greater than in the area of the inlet channel. This leads to a very large friction in the bearings of the impeller. The friction also reduces the efficiency of the feed pump.
- the invention is based on the problem of designing a feed pump of the type mentioned at the outset in such a way that it has the highest possible efficiency.
- the feed pump according to the invention thus has a particularly high efficiency.
- Another advantage of this design of the feed pump according to the invention is that it is very low-wear and therefore has a particularly long service life.
- the feed pump according to the invention can have a multiplicity of feed chambers if the feed chambers each extend over a fraction of their circular diameter.
- the delivery chambers of the delivery pump according to the invention extend over almost their entire circular diameter if the delivery chambers are arranged on opposite end faces of the impeller. As a result, the feed pump according to the invention has a particularly high efficiency.
- axial forces can be distributed evenly over one side of the impeller if they are on both end faces of the impeller arranged blade chambers overlap and when the inlet channels of the delivery chambers are arranged on one end of the impeller and the outlet channels on the other end of the impeller.
- the feed pump according to the invention is flowed through axially by this design and can therefore be arranged in a particularly space-saving manner, for example in a feed unit for fuel in a motor vehicle.
- a bearing of the impeller 'designed in accordance with another advantageous development of the invention a particularly simple construction, when on the side opposite the radial bearing face of the impeller a thrust bearing disposed between the impeller and an electric motor driving the impeller is a radial bearing and.
- the axial bearing is of particularly simple construction and can therefore be manufactured particularly cost-effectively if the axial bearing has a ball provided for supporting a shaft driving the impeller.
- the feed pump according to the invention has particularly low flow losses and thus a very high degree of efficiency if the outlet channels and / or the inlet channels are arranged pointing in the radial direction towards the delivery chambers.
- Fig.l a feed pump according to the invention in the longitudinal cut
- FIG. 2 shows the feed pump from FIG. 1 in a sectional view along the line II-II
- FIG. 3 shows a further embodiment of the feed pump according to the invention in longitudinal section
- FIG. 4 shows the feed pump from FIG. 3 in a sectional view along the line IV-IV.
- FIG. 1 shows a feed pump 2 driven by an electric motor 1 with an impeller 4 rotating in a pump housing 3.
- the feed pump 2 is designed as a side channel pump and can be used, for example, to deliver fuel or windshield washer fluid in a motor vehicle.
- the impeller 4 is attached to a shaft 5 of the electric motor 1.
- the feed pump 2 has two separate feed chambers 6, 7.
- the feed chambers 6, 7 each have a partially annular channel 8, 9 arranged in the pump housing 3 and vane chambers 12, 13 delimited by guide vanes 10, 11 of the impeller 4.
- the shaft 5 has near the electric motor 1 a radial bearing 14 and below the impeller 4 an axial bearing 15 with a ball 16 arranged in the pump housing 3.
- the ball 16 is hardened like the shaft 5.
- Pockets 18, 19 connected to one another via channels 17 are incorporated in the end faces of the impeller 4.
- the pockets 18, 19 are filled with leakage from the fluid to be pumped and form 3 axial sliding bearings with the opposite wall of the pump housing.
- the feed chambers 6, 7 each have an inlet channel 20, 21 and an outlet channel 22, 23.
- the inlet channels 20, 21 open out each in the beginning of the partially annular channels 8, 9.
- the outlet channels 22, 23 are arranged in the flow direction of the fluid to be pumped at the ends of the partially annular channels 8, 9.
- the direction of rotation of the impeller 4 and the flow directions in the inlet channels 20, 21 and the outlet channels 22, 23 are indicated by arrows.
- the guide vanes 10, 11 When the impeller 4 rotates, the guide vanes 10, 11 generate circulation currents in the delivery chambers 6, 7 and convey the fluid from the inlet channels 20, 21 to the outlet channels 22, 23.
- the inlet channels 20, 21 and the outlet channels 22, 23 are each other arranged opposite. Since a greater pressure prevails in the feed chambers 6, 7 near the outlet channels 22, 23 than at the inlet channels 20, 21, the radial forces acting on the impeller 4 are canceled out by this design.
- the figures also show
- FIG. 3 shows a delivery pump 25 driven by an electric motor 24 with delivery chambers 27, 28 penetrating an impeller 26.
- the feed pump 25 On its side facing away from the electric motor 24, the feed pump 25 has two inlet channels 31, 32 opening from radially outside in each case into a feed chamber 27, 28.
- FIG. 4 shows in a cross section through the feed pump 25 from FIG. 3 along the line IV-IV that the delivery chambers 27, 28 extend over a fraction of their circular diameter.
- the delivery chambers 27, 28 each have a slightly radially outwardly directed outlet channel 33, 34.
- the outlet channels 33, 34 and thus also the inlet channels 31, 32 are arranged opposite one another so that the impeller
- FIG. 3 shows playfully on one of the outlet channels 33 that the outlet channels 33, 34 penetrate a pump housing 35 in the direction of the electric motor 24.
- This feed pump 25 is designed as a side channel pump.
- the feed pump 25 can also be designed as a peripheral pump with vane chambers arranged in the outer circumference.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Fuel-Injection Apparatus (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The invention relates to a feed pump (2) that is configured as a side-channel pump with a plurality of identically designed feed chambers (6, 7) with outlet channels (22, 23) that are disposed opposite one another, thereby eliminating the radial forces acting upon the impeller (4) of the feed pump (2). The feed pump (2) according to the invention is especially wear-free and has a very high degree of efficiency.
Description
Beschreibung description
Förderpumpefeed pump
Die Erfindung betrifft eine Förderpumpe mit einem angetriebenen, sich in einem Pumpengehäuse drehenden, in seinen Stirnseiten zumindest einen Kranz Schaufelkämmern begrenzende Leitschaufeln aufweisenden Laufrad, und mit zumindest einem im- Bereich der Leitschaufeln in dem Pumpengehäuse angeordneten teilringförmigen Kanal, welcher mit den Schaufelkämmern eine Förderkammer von einem Einlaßkanal zu einem Auslaßkanal bildet.The invention relates to a feed pump with a driven impeller which rotates in a pump housing and has at least one ring of vane chambers in its end faces and has at least one partially annular channel which is arranged in the region of the guide vanes in the pump housing and which has a delivery chamber with the vane chambers forms an inlet duct to an outlet duct.
Solche Förderpumpen werden beispielsweise in heutigen Kraftfahrzeugen häufig zum Fördern von Kraftstoff oder Scheibenreinigungsflüssigkeit eingesetzt und sind aus der Praxis bekannt. Das Laufrad der bekannten Förderpumpe ist auf einer Welle eines Elektromotors befestigt. Als Axiallager hat die Förderpumpe in einem von den Schaufelkammern aus gesehen radial inneren Bereich des Laufrades miteinander verbundene Taschen zur Sammlung des von der Pumpe zu fördernden Fluids . Diese Taschen bilden mit dem Fluid ein Axialgleitlager.Such feed pumps are often used, for example, in today's motor vehicles to deliver fuel or window cleaning fluid and are known from practice. The impeller of the known feed pump is attached to a shaft of an electric motor. As a thrust bearing, the feed pump has pockets connected to one another in a radially inner region of the impeller, as seen from the blade chambers, for collecting the fluid to be conveyed by the pump. These pockets form an axial slide bearing with the fluid.
Nachteilig bei der bekannten Förderpumpe ist, daß das Laufrad und damit die das Laufrad antreibende Welle in radialer Richtung sehr stark belastet wird, da der Druck innerhalb der Förderkammer im Bereich des Auslaßkanals wesentlich größer ist als im Bereich des Einlaßkanals. Dies führt zu einer sehr großen Reibung in Lagern des Laufrades. Die Reibung verringert zudem den Wirkungsgrad der Förderpumpe .
Der Erfindung liegt das Problem zugrunde, eine Förderpumpe der eingangs genannten Art so zu gestalten, daß sie einen möglichst hohen Wirkungsgrad aufweist.A disadvantage of the known feed pump is that the impeller and thus the shaft driving the impeller are very heavily loaded in the radial direction, since the pressure inside the delivery chamber in the area of the outlet channel is substantially greater than in the area of the inlet channel. This leads to a very large friction in the bearings of the impeller. The friction also reduces the efficiency of the feed pump. The invention is based on the problem of designing a feed pump of the type mentioned at the outset in such a way that it has the highest possible efficiency.
Dieses Problem wird erfindungsgemäß gelöst durch mehrere Förderkammern, deren Auslaßkanäle und deren Einlaßkanäle jeweils symmetrisch um die Drehachse des Laufrades angeordnet sind.This problem is solved according to the invention by a plurality of delivery chambers, the outlet channels and the inlet channels of which are each arranged symmetrically about the axis of rotation of the impeller.
Durch diese Gestaltung haben die von dem in den Förderkammern strömenden Fluid auf das Laufrad übertragenen Kräfte einander entgegengesetzte Kraftrichtungen in radialer Richtung. Die Kräfte heben sich damit auf, so daß sich Lagerkräfte der das Laufrad antreibenden Welle besonders gering halten lassen. Die erfindungsgemäße Förderpumpe hat damit einen besonders hohen Wirkungsgrad. Ein weiterer Vorteil dieser Gestaltung der erfindungsgemäßen Förderpumpe besteht darin, daß sie sehr verschleißarm ist und daher eine besonders hohe Lebensdauer aufweist .As a result of this design, the forces transmitted from the fluid flowing in the conveying chambers to the impeller have opposite directions of force in the radial direction. The forces cancel each other out, so that bearing forces of the shaft driving the impeller can be kept particularly low. The feed pump according to the invention thus has a particularly high efficiency. Another advantage of this design of the feed pump according to the invention is that it is very low-wear and therefore has a particularly long service life.
Die erfindungsgemäße Förderpumpe kann eine Vielzahl von Fδrderkammern aufweisen, wenn die Förderkammern sich jeweils über einen Bruchteil ihres Kreisdurchmessers erstrecken.The feed pump according to the invention can have a multiplicity of feed chambers if the feed chambers each extend over a fraction of their circular diameter.
Die Förderkammern der erfindungsgemäßen Förderpumpe erstrecken sich über nahezu ihren gesamten Kreisdurchmesser, wenn die Förderkammern auf gegenüberliegenden Stirnseiten des Laufrades angeordnet sind. Hierdurch hat die erfindungsgemäße Förderpumpe einen besonders hohen Wirkungsgrad.The delivery chambers of the delivery pump according to the invention extend over almost their entire circular diameter if the delivery chambers are arranged on opposite end faces of the impeller. As a result, the feed pump according to the invention has a particularly high efficiency.
Axialkräfte lassen sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung gleichmäßig über eine Seite des Laufrades verteilen, wenn sich auf beiden Stirnseiten
des Laufrades angeordnete Schaufelkammern überschneiden und wenn die Einlaßkanäle der Förderkammern auf der einen Stirnseite des Laufrades und die Auslaßkanäle auf der anderen Stirnseite des Laufrades angeordnet sind. Hierdurch lassen sich die auf das Laufrad wirkenden Axialkräfte einfach abstützen. Weiterhin wird die erfindungsgemäße Förderpumpe durch diese Gestaltung axial durchströmt und läßt sich daher besonders platzsparend beispielsweise in einer Fördereinheit für Kraftstoff in einem Kraftfahrzeug anordnen.According to another advantageous development of the invention, axial forces can be distributed evenly over one side of the impeller if they are on both end faces of the impeller arranged blade chambers overlap and when the inlet channels of the delivery chambers are arranged on one end of the impeller and the outlet channels on the other end of the impeller. In this way, the axial forces acting on the impeller can be easily supported. Furthermore, the feed pump according to the invention is flowed through axially by this design and can therefore be arranged in a particularly space-saving manner, for example in a feed unit for fuel in a motor vehicle.
Eine Lagerung des Laufrades 'gestaltet sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung konstruktiv besonders einfach, wenn zwischen dem Laufrad und einem das Laufrad antreibenden Elektromotor ein Radiallager und auf der dem Radiallager gegenüberliegenden Seite des Laufrades ein Axiallager angeordnet ist.A bearing of the impeller 'designed in accordance with another advantageous development of the invention a particularly simple construction, when on the side opposite the radial bearing face of the impeller a thrust bearing disposed between the impeller and an electric motor driving the impeller is a radial bearing and.
Das Axiallager ist gemäß einer anderen vorteilhaften Weiterbildung der Erfindung besonders einfach aufgebaut und läßt sich daher besonders kostengünstig fertigen, wenn das Axiallager eine zur Abstützung einer das Laufrad antreibenden Welle vorgesehene Kugel hat .According to another advantageous development of the invention, the axial bearing is of particularly simple construction and can therefore be manufactured particularly cost-effectively if the axial bearing has a ball provided for supporting a shaft driving the impeller.
Die erfindungsgemäße Förderpumpe hat besonders geringe Strömungsverluste und damit einen sehr hohen Wirkungsgrad, wenn die Auslaßkanäle und/oder die Einlaßkanäle in radialer Richtung zu den Fδrderkammern weisend angeordnet sind.The feed pump according to the invention has particularly low flow losses and thus a very high degree of efficiency if the outlet channels and / or the inlet channels are arranged pointing in the radial direction towards the delivery chambers.
Die Erfindung läßt zahlreiche Ausfuhrungsformen zu. Zur weiteren Verdeutlichung ihres Grundprinzips sind zwei davon in der Zeichnung dargestellt und werden nachfolgend beschrieben. Diese zeigt inThe invention allows numerous embodiments. To further clarify its basic principle, two of them are shown in the drawing and are described below. This shows in
Fig.l eine erfindungsgemäße Förderpumpe im Längs-
schnitt ,Fig.l a feed pump according to the invention in the longitudinal cut ,
Fig.2 die Förderpumpe aus Figur 1 in einer Schnitt- darstellung entlang der Linie II - II,2 shows the feed pump from FIG. 1 in a sectional view along the line II-II,
Fig.3 eine weitere Ausfuhrungsform der erfindungs- gemäßen Förderpumpe im Längsschnitt,3 shows a further embodiment of the feed pump according to the invention in longitudinal section,
Fig.4 die Förderpumpe aus Figur 3 in einer Schnitt- darstellung entlang der Linie IV - IV.4 shows the feed pump from FIG. 3 in a sectional view along the line IV-IV.
Figur 1 zeigt eine von einem Elektromotor 1 angetriebene Förderpumpe 2 mit einem sich in einem Pumpengehäuse 3 drehenden Laufrad 4. Die Förderpumpe 2 ist als Seitenkanalpumpe ausgebildet und läßt sich beispielsweise zum Fördern von Kraftstoff oder Scheibenwaschflüssigkeit in einem Kraftfahrzeug einsetzen. Das Laufrad 4 ist auf einer Welle 5 des Elektromotors 1 befestigt. Die Förderpumpe 2 hat zwei voneinander getrennte Fδrderkammern 6, 7. Die Förderkammern 6, 7 weisen jeweils einen in dem Pumpengehäuse 3 angeordneten teilringförmigen Kanal 8, 9 und von Leitschaufeln 10, 11 des Laufrades 4 begrenzte Schaufelkammern 12, 13 auf. Die Welle 5 hat nahe des Elektromotors 1 ein Radiallager 14 und unterhalb des Laufrades 4 ein Axiallager 15 mit einer in dem Pumpengehäuse 3 angeordneten Kugel 16. Die Kugel 16 ist wie die Welle 5 gehärtet. In den Stirnseiten des Laufrades 4 sind über Kanäle 17 miteinander verbundene Taschen 18, 19 eingearbeitet. Die Taschen 18, 19 werden durch Leckage von dem zu fördernden Fluid gefüllt und bilden mit der gegenüberliegenden Wandung des Pumpengehäuses 3 Axialgleitlager.FIG. 1 shows a feed pump 2 driven by an electric motor 1 with an impeller 4 rotating in a pump housing 3. The feed pump 2 is designed as a side channel pump and can be used, for example, to deliver fuel or windshield washer fluid in a motor vehicle. The impeller 4 is attached to a shaft 5 of the electric motor 1. The feed pump 2 has two separate feed chambers 6, 7. The feed chambers 6, 7 each have a partially annular channel 8, 9 arranged in the pump housing 3 and vane chambers 12, 13 delimited by guide vanes 10, 11 of the impeller 4. The shaft 5 has near the electric motor 1 a radial bearing 14 and below the impeller 4 an axial bearing 15 with a ball 16 arranged in the pump housing 3. The ball 16 is hardened like the shaft 5. Pockets 18, 19 connected to one another via channels 17 are incorporated in the end faces of the impeller 4. The pockets 18, 19 are filled with leakage from the fluid to be pumped and form 3 axial sliding bearings with the opposite wall of the pump housing.
Wie Figur 2 in einem Querschnitt durch die Förderpumpe 2 aus Figur 1 entlang der Linie II - II zeigt, haben die Förderkammern 6, 7 jeweils einen Einlaßkanal 20, 21 und einen Auslaßkanal 22, 23. Die Einlaßkanäle 20, 21 münden
jeweils in den Anfang der teilringförmigen Kanäle 8, 9. Die Auslaßkanäle 22, 23 sind in Strömungsrichtung des zu fördernden Fluids an den Enden der teilringförmigen Kanäle 8, 9 angeordnet. Zur Verdeutlichung sind die Drehrichtung des Laufrades 4 und die Strömungsrichtungen in den Einlaßkanälen 20, 21 und den Auslaßkanälen 22, 23 mit Pfeilen gekennzeichnet. Bei einer Drehung des Laufrades 4 erzeugen die Leitschaufeln 10, 11 in den Förderkammern 6, 7 ZirkulationsStrömungen und fördern das Fluid von den Einlaßkanälen 20, 21 zu den Auslaßkanälen 22, 23. Die Einlaßkanäle 20, 21 und die Auslaßkanäle 22, 23 sind jeweils einander gegenüberstehend angeordnet. Da in den Fδrderkammern 6, 7 nahe der Auslaßkanäle 22, 23 ein größerer Druck herrscht als an den Einlaßkanälen 20, 21, heben sich durch diese Gestaltung die auf das Laufrad 4 wirkenden Radialkräfte auf. Weiterhin zeigen die FigurenAs FIG. 2 shows in a cross section through the feed pump 2 from FIG. 1 along the line II-II, the feed chambers 6, 7 each have an inlet channel 20, 21 and an outlet channel 22, 23. The inlet channels 20, 21 open out each in the beginning of the partially annular channels 8, 9. The outlet channels 22, 23 are arranged in the flow direction of the fluid to be pumped at the ends of the partially annular channels 8, 9. For clarification, the direction of rotation of the impeller 4 and the flow directions in the inlet channels 20, 21 and the outlet channels 22, 23 are indicated by arrows. When the impeller 4 rotates, the guide vanes 10, 11 generate circulation currents in the delivery chambers 6, 7 and convey the fluid from the inlet channels 20, 21 to the outlet channels 22, 23. The inlet channels 20, 21 and the outlet channels 22, 23 are each other arranged opposite. Since a greater pressure prevails in the feed chambers 6, 7 near the outlet channels 22, 23 than at the inlet channels 20, 21, the radial forces acting on the impeller 4 are canceled out by this design. The figures also show
1 und 2, daß die Einlaßkanäle 20, 21 und die Auslaßkanäle 22, 23 in radialer Richtung zu den Förderkammern 6, .7 weisend angeordnet sind.1 and 2, that the inlet channels 20, 21 and the outlet channels 22, 23 are arranged pointing in the radial direction to the delivery chambers 6, .7.
Figur 3 zeigt eine von einem Elektromotor 24 angetriebene Fδrderpumpe 25 mit ein Laufrad 26 durchdringenden Förderkammern 27, 28. In dem Laufrad 26 angeordnete, einander gegenüberstehende Schaufelkammern 29, 30 sind hierfür untereinander verbunden. Auf ihrer dem Elektromotor 24 abgewandten Seite hat die Förderpumpe 25 zwei von radial außerhalb in jeweils eine Förderkammer 27, 28 mündende Einlaßkanäle 31, 32. Figur 4 zeigt in einem Querschnitt durch die Förderpumpe 25 aus Figur 3 entlang der Linie IV - IV, daß sich die Förderkammern 27, 28 über einen Bruchteil ihres Kreisdurchmessers erstrecken. Die Förderkammern 27, 28 haben jeweils einen geringfügig radial nach außen geführten Auslaßkanal 33, 34. Die Auslaßkanäle 33, 34 und damit auch die Einlaßkanäle 31, 32 sind einander gegenüberstehend angeordnet, so daß sich auf das LaufradFIG. 3 shows a delivery pump 25 driven by an electric motor 24 with delivery chambers 27, 28 penetrating an impeller 26. In the impeller 26, opposing vane chambers 29, 30 are interconnected for this purpose. On its side facing away from the electric motor 24, the feed pump 25 has two inlet channels 31, 32 opening from radially outside in each case into a feed chamber 27, 28. FIG. 4 shows in a cross section through the feed pump 25 from FIG. 3 along the line IV-IV that the delivery chambers 27, 28 extend over a fraction of their circular diameter. The delivery chambers 27, 28 each have a slightly radially outwardly directed outlet channel 33, 34. The outlet channels 33, 34 and thus also the inlet channels 31, 32 are arranged opposite one another so that the impeller
26 wirkende Radialkräfte aufheben. Figur 3 zeigt bei-
spielhaft an einem der Auslaßkanäle 33, daß die Auslaßkanäle 33, 34 ein Pumpengehäuse 35 in Richtung Elektromotor 24 durchdringen. Diese Förderpumpe 25 ist als Seitenkanalpumpe ausgebildet. Selbstverständlich kann die Förderpumpe 25 auch als Pheripheralpumpe mit im äußeren Umfang angeordneten Schaufelkammern gestaltet sein.
Cancel 26 acting radial forces. FIG. 3 shows playfully on one of the outlet channels 33 that the outlet channels 33, 34 penetrate a pump housing 35 in the direction of the electric motor 24. This feed pump 25 is designed as a side channel pump. Of course, the feed pump 25 can also be designed as a peripheral pump with vane chambers arranged in the outer circumference.
Claims
1. Förderpumpe mit einem angetriebenen, sich in einem Pumpengehäuse drehenden, in seinen Stirnseiten zumindest einen Kranz Schaufelkammern begrenzende Leitschaufeln aufweisenden Laufrad, und mit zumindest einem im Bereich der Leitschaufein in dem Pumpengehäuse angeordneten teil- ringförmigen Kanal, welcher mit den Schaufelkammern eine Förderkammer von einem Einlaßkanal zu einem Auslaßkanal bildet, gekennzeichnet durch mehrere Förderkammern (6, 7, 27, 28), deren Auslaßkanäle (22, 23, 33, 34) und deren Einlaßkanäle (20, 21, 31, 32) jeweils symmetrisch um die Drehachse des Laufrades (4, 26) angeordnet sind.1. Delivery pump with a driven impeller rotating in a pump housing and having at least one ring of vane chambers in its end faces and with at least one partially annular channel arranged in the region of the vane in the pump housing, which channel with the vane chambers is a delivery chamber of one Inlet channel to an outlet channel, characterized by a plurality of delivery chambers (6, 7, 27, 28), their outlet channels (22, 23, 33, 34) and their inlet channels (20, 21, 31, 32) each symmetrically about the axis of rotation of the impeller (4, 26) are arranged.
2. Fδrderpumpe nach Anspruch 1, dadurch gekennzeichnet, daß die Förderkammern (27, 28) sich jeweils über einen Bruchteil ihres Kreisdurchmessers erstrecken.2. A feed pump according to claim 1, characterized in that the delivery chambers (27, 28) each extend over a fraction of their circular diameter.
3. Förderpumpe nach Anspruch 1 oder 2 , dadurch gekennzeichnet, daß die Förderkammern (6, 7) auf gegenüberliegenden Stirnseiten des Laufrades (4) angeordnet sind.3. Feed pump according to claim 1 or 2, characterized in that the delivery chambers (6, 7) are arranged on opposite end faces of the impeller (4).
4. Fδrderpumpe nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß sich auf beiden Stirnseiten des Laufrades (26) angeordnete Schaufelkammern (29, 30) überschneiden und daß die Einlaßkanäle (31, 32) der Förderkammern (27, 28) auf der einen Stirnseite des Laufrades (26) und die Auslaßkanäle (33, 34) auf der anderen Stirnseite des Laufrades (26) angeordnet sind.4. A feed pump according to at least one of the preceding claims, characterized in that vane chambers (29, 30) arranged on both end faces of the impeller (26) overlap and that the inlet channels (31, 32) of the delivery chambers (27, 28) on one End face of the impeller (26) and the outlet channels (33, 34) are arranged on the other end face of the impeller (26).
5. Förderpumpe nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß zwischen dem Laufrad (4, 26) und einem das Laufrad (4, 26) antreibenden Elektromotor (1, 24) ein Radiallager (14) und auf der dem Radiallager (14) gegenüberliegenden Seite des Laufrades (4, 26) ein Axiallager (15) angeordnet ist.5. Feed pump according to at least one of the preceding claims, characterized in that between the impeller (4, 26) and one of the impeller (4, 26) driving electric motor (1, 24), a radial bearing (14) and on the Radial bearing (14) opposite side of the impeller (4, 26) an axial bearing (15) is arranged.
6. Förderpumpe nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Axiallager6. Feed pump according to at least one of the preceding claims, characterized in that the axial bearing
(15) eine zur Abstützung einer das Laufrad (4, 26) antreibenden Welle (5) vorgesehene Kugel (16) hat.(15) has a ball (16) provided for supporting a shaft (5) driving the impeller (4, 26).
7. Förderpumpe nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Auslaßkanäle7. Feed pump according to at least one of the preceding claims, characterized in that the outlet channels
(22, 23) und/oder die Einlaßkanäle (20, 21) in radialer Richtung zu den Förderkammern (6, 7, 27, 28) weisend angeordnet sind. (22, 23) and / or the inlet channels (20, 21) are arranged pointing in the radial direction towards the delivery chambers (6, 7, 27, 28).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10062451A DE10062451A1 (en) | 2000-12-14 | 2000-12-14 | feed pump |
DE10062451 | 2000-12-14 | ||
PCT/DE2001/004675 WO2002048551A1 (en) | 2000-12-14 | 2001-12-13 | Feed pump |
Publications (1)
Publication Number | Publication Date |
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EP1348078A1 true EP1348078A1 (en) | 2003-10-01 |
Family
ID=7667221
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01984706A Withdrawn EP1348078A1 (en) | 2000-12-14 | 2001-12-13 | Feed pump |
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Country | Link |
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US (1) | US6942446B2 (en) |
EP (1) | EP1348078A1 (en) |
JP (1) | JP2004515696A (en) |
CN (1) | CN1481477A (en) |
BR (1) | BR0116081A (en) |
DE (1) | DE10062451A1 (en) |
WO (1) | WO2002048551A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7632060B2 (en) * | 2005-01-24 | 2009-12-15 | Ford Global Technologies, Llc | Fuel pump having dual flow channel |
US7165932B2 (en) * | 2005-01-24 | 2007-01-23 | Visteon Global Technologies, Inc. | Fuel pump having dual single sided impeller |
DE102005042228B4 (en) * | 2005-09-05 | 2015-07-23 | DüRR DENTAL AG | suction machine |
US20100172777A1 (en) * | 2007-07-02 | 2010-07-08 | Borgwarner Inc. | Inlet design for a pump assembly |
JP5718907B2 (en) * | 2009-05-20 | 2015-05-13 | エドワーズ リミテッド | Regenerative vacuum pump with axial force balancing means |
CN102536906A (en) * | 2010-12-17 | 2012-07-04 | 刘显海 | Double-action vortex pump |
US10060436B2 (en) * | 2016-01-27 | 2018-08-28 | Higra Industrial Ltda | Progressive vortex pump |
US10962013B2 (en) * | 2017-12-26 | 2021-03-30 | Ebs-Ray Pumps Pty Ltd | Regenerative turbine pumps |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1861837A (en) * | 1926-07-12 | 1932-06-07 | Arthur W Burks | Rotary pump |
US1960659A (en) * | 1932-06-23 | 1934-05-29 | Arthur W Burks | Pumping apparatus |
DE725637C (en) * | 1940-11-12 | 1942-09-25 | Ing Frantisek Hejduk | Self-priming circulation pump |
DE761490C (en) * | 1941-06-28 | 1954-01-25 | Siemens Schuckertwerke A G | Submersible pump |
US3259072A (en) * | 1964-10-26 | 1966-07-05 | Gen Motors Corp | Rotary fuel pump |
CH532195A (en) * | 1971-06-01 | 1972-12-31 | Bbc Brown Boveri & Cie | Centrifugal pump and use of the same |
DE3427112A1 (en) * | 1984-07-23 | 1986-01-23 | Friedrich 8541 Röttenbach Schweinfurter | SIDE CHANNEL PUMP WITH FORCE COMPENSATION |
JPS61190191A (en) * | 1985-02-20 | 1986-08-23 | Automob Antipollut & Saf Res Center | Motor-driven fuel pump for car |
US6100618A (en) * | 1995-04-03 | 2000-08-08 | Sulzer Electronics Ag | Rotary machine with an electromagnetic rotary drive |
US5702229A (en) * | 1996-10-08 | 1997-12-30 | Walbro Corporation | Regenerative fuel pump |
DE19725249C2 (en) * | 1997-06-14 | 2002-05-02 | Siemens Ag | feed pump |
KR100317013B1 (en) * | 1997-08-07 | 2001-12-24 | 이토 히로미 | Impeller of motor-driven fuel pump |
DE19817675A1 (en) * | 1998-04-21 | 1999-11-04 | Brinkmann Pumpen K H Brinkmann | Pump unit for sucking fluid and issuing it under pressure |
DE19926587A1 (en) * | 1999-06-11 | 2000-12-14 | Mannesmann Vdo Ag | Fuel pump for vehicle has inlet channel parallel to end of rotor wheel and opening into partially annular channel forming fuel channel from inlet to outlet channel with bucket chambers |
US6280157B1 (en) * | 1999-06-29 | 2001-08-28 | Flowserve Management Company | Sealless integral-motor pump with regenerative impeller disk |
DE10013907A1 (en) * | 2000-03-21 | 2001-09-27 | Mannesmann Vdo Ag | Fuel feed pump for vehicle has small variations in angular spacing of blades |
DE10019911A1 (en) * | 2000-04-20 | 2001-10-25 | Mannesmann Vdo Ag | Feed pump esp. in surge chamber of motor vehicle fuel tank has rotor with several planes and rings of guide blades located in different planes |
DE10026490A1 (en) * | 2000-05-27 | 2001-11-29 | Bosch Gmbh Robert | Fuel delivery unit has blade rim on only one side of impeller wheel opposite side channel with inlet and outlet on same side of wheel with recesses on other side connected to blade chambers |
-
2000
- 2000-12-14 DE DE10062451A patent/DE10062451A1/en not_active Withdrawn
-
2001
- 2001-12-13 WO PCT/DE2001/004675 patent/WO2002048551A1/en active Application Filing
- 2001-12-13 EP EP01984706A patent/EP1348078A1/en not_active Withdrawn
- 2001-12-13 JP JP2002549841A patent/JP2004515696A/en not_active Withdrawn
- 2001-12-13 BR BR0116081-8A patent/BR0116081A/en not_active Application Discontinuation
- 2001-12-13 US US10/450,264 patent/US6942446B2/en not_active Expired - Fee Related
- 2001-12-13 CN CNA018205313A patent/CN1481477A/en active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO0248551A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2004515696A (en) | 2004-05-27 |
DE10062451A1 (en) | 2002-06-20 |
US20040028521A1 (en) | 2004-02-12 |
BR0116081A (en) | 2003-12-23 |
US6942446B2 (en) | 2005-09-13 |
CN1481477A (en) | 2004-03-10 |
WO2002048551A1 (en) | 2002-06-20 |
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