EP2049801B1 - Feed pump having a filter - Google Patents

Feed pump having a filter Download PDF

Info

Publication number
EP2049801B1
EP2049801B1 EP07802474.2A EP07802474A EP2049801B1 EP 2049801 B1 EP2049801 B1 EP 2049801B1 EP 07802474 A EP07802474 A EP 07802474A EP 2049801 B1 EP2049801 B1 EP 2049801B1
Authority
EP
European Patent Office
Prior art keywords
filter
feed pump
connection pipe
flow
section
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.)
Active
Application number
EP07802474.2A
Other languages
German (de)
French (fr)
Other versions
EP2049801A1 (en
Inventor
Johannes Deichmann
Christian Herbers
Patrick Herold
Bernd Jaeger
Antoine Rohaut
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
Continental Automotive GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Continental Automotive GmbH filed Critical Continental Automotive GmbH
Publication of EP2049801A1 publication Critical patent/EP2049801A1/en
Application granted granted Critical
Publication of EP2049801B1 publication Critical patent/EP2049801B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/08—Feeding by means of driven pumps electrically driven
    • F02M37/10—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • F02M37/50—Filters arranged in or on fuel tanks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps

Definitions

  • the invention relates to a feed pump with a driven, rotating in a pump housing impeller, with at least one rim blade chambers bounding blades and at least one arranged in the region of the blades in the pump housing partially annular channel, which with the blade chambers for conveying a liquid from a Inlet port to a discharge channel provided delivery chamber forms, and a filter with a connection piece, wherein the connection piece is connected to the inlet channel of the feed pump.
  • feed pumps are known as peripheral or side channel pumps and are often used for conveying fuel from a fuel tank to an internal combustion engine of a motor vehicle.
  • the filter is upstream of the pump and serves to prevent contaminants from entering the delivery pump.
  • the fuel to be pumped can have different temperatures. Especially with hot fuel, e.g. at a warm start of the motor vehicle, the fuel tends to increased outgassing, which gas bubbles form from vaporous fuel, which in turn significantly affect the flow rate of the feed pump. In order to improve the hot conveying properties of feed pumps, it is known to provide a compression area in the part-annular channel in order to reduce the proportion of gas bubbles.
  • the invention has for its object to provide a feed pump with a filter having good hot-conveying properties by the outgassing of the fuel to be pumped is effectively reduced.
  • the object is achieved in that the connecting piece of the filter has a region with decreasing in the flow direction cross section and that the transition of the flow cross section of the connecting piece to the flow cross section of the inlet channel is formed continuously.
  • the region in the filter With the configuration of the flow region in the filter, the region is extended, is selectively supplied by the fuel of the feed pump, in particular the impeller. As a result, not only the inlet channel is now available for the flow guidance of the fuel.
  • the extended flow area with its concrete design allows a targeted guiding of the fuel flow. Turbulence is dissipated, resulting in an effective calming of the flow. As a result of targeted guidance, the fuel can outgas less.
  • the region in the filter with a flow-reducing cross-section also leads to a compression of the fuel, which has a positive effect on the hot conveyance property of the feed pump. Another advantage is that a calming area in the part-annular channel is no longer absolutely necessary, whereby the usable channel length increases for the pressure build-up.
  • the steady transition of the flow cross-sections of the connecting piece of the filter and the inlet channel of the feed pump contributes to a calming of the flowing fuel, as turbulence is avoided due to non-existent edges or crack
  • the flow cross-sections which are separated from one another can be formed particularly easily by a partition wall arranged in the connecting piece.
  • Turbulence in the fuel that promotes outgassing is avoided when the fuel is directed with changes in the direction of the filter when the radii of the directional changes in the flow of the filter are at least 20% of the height or width of the flow area in that range.
  • turbulences of the fuel due to cross-sectional changes are avoided in that cross-sectional changes in the flow profile are formed continuously.
  • a particularly good and tight connection of the filter with the feed pump is achieved in that the connecting piece of the filter is pressed or clipped into a receptacle of the pump housing, wherein the receptacle is arranged in the pump cover of the pump cover and pump bottom formed pump housing.
  • FIG. 1 shows a fuel tank 1 of a motor vehicle, not shown.
  • a feed pump 2 is arranged, which could also be arranged in a swirl pot.
  • the feed pump 2 has a housing 3, which connects the connecting piece 4 and the pumping stage 5 with each other.
  • a filter 6 is connected via its connecting piece 7 with the feed pump 2.
  • the feed pump 2 sucks fuel from the fuel tank 1 through the filter 6. About an outlet 8, the fuel is conveyed at a higher pressure by means of a flow line 9 to the engine 10 of the motor vehicle.
  • FIG. 2 shows a section through the lower part of the feed pump 1 with the pumping stage 5 and the filter 6.
  • the pumping stage 5 consists of a pump housing 11 in which an impeller 12 is arranged.
  • the pump housing 11 is formed by a pump bottom 13 and a pump cover 14.
  • the impeller 12 is driven by a shaft 15, which is part of an electric motor, not shown, of the feed pump 2.
  • the impeller 14 has on its side surfaces in each case two concentrically arranged rings 16-19 of blade chambers bounding blades 20-23, wherein the blade chambers of opposing rings 16, 18; 17, 19 are formed so that the impeller 12 is axially flowed through.
  • the wreaths 16-19 opposite are partially annular channels 24-27 arranged in the pump housing 11, wherein the rings 16, 18; 17, 19 each have an inlet channel in the pump cover 14 and an outlet channel is assigned in the pump bottom 13. In the illustration shown, only the inlet channel 28 for the rings 16, 18 is in the cutting plane.
  • the pump cover 14 has a receptacle 29, in which the connection piece 7 of the filter 6 is pressed.
  • the connecting piece 7 contains a channel 30 through which the fuel, which was previously sucked in via the filter cloth 31 fastened to the connecting piece 7, flows to the inlet channel 28.
  • a region 32 is formed with decreasing in the flow direction cross-section. This funnel-shaped region 32 leads to a first compression of the fuel flowing through and thus to a calming of the flow. Any existing in fuel gas bubbles are already reduced in this area 32.
  • the flow is deflected by 90 °, wherein the radii 33, 34 of the deflection amount to approximately 30% of the height of the flow cross section of the region 32. Due to the large radii 33, 34 is a gentle deflection. Turbulences that can lead to outgassing of the fuel are thus avoided. Furthermore, the steady transition, i. H. without protrusions or edges, between the connecting piece 7 and the inlet channel 28 to supply the fuel in a quiet flow to the impeller.
  • the decreasing in the flow direction flow cross section in the inlet channel 28 in turn also contributes to prevent the outgassing of the fuel, or to eliminate existing gas bubbles in the fuel.
  • the connecting piece 7 has immediately before the transition to the pump cover 14, a partition wall 35 which divides the one flow cross section into two flow cross sections 36, 37.
  • the flow cross-section 37 serves to supply a portion of the fuel to the radially inner rings 16, 18.
  • Of the associated inlet channel 38 is only partially visible in the section due to its offset to the inlet channel 28 arrangement.
  • the partition wall 35 of the fuel flow is already divided accordingly before reaching the pump cover 14 to provide after the division of the fuel flow as long as possible routes that can be used for calming the flow of fuel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

Gegenstand der Erfindung ist eine Förderpumpe mit einem angetriebenen, sich in einem Pumpengehäuse drehenden Laufrad, mit zumindest einem Kranz Schaufelkammern begrenzenden Laufschaufeln und mit zumindest einem im Bereich der Laufschaufeln in dem Pumpengehäuse angeordneten teilringförmigen Kanal, welcher mit den Schaufelkammern eine zum Fördern einer Flüssigkeit von einem Einlasskanal bis zu einem Auslasskanal vorgesehene Förderkammer bildet, und einem Filter mit einem Anschlussstutzen, wobei der Anschlussstutzen mit dem Einlasskanal der Förderpumpe verbunden ist.The invention relates to a feed pump with a driven, rotating in a pump housing impeller, with at least one rim blade chambers bounding blades and at least one arranged in the region of the blades in the pump housing partially annular channel, which with the blade chambers for conveying a liquid from a Inlet port to a discharge channel provided delivery chamber forms, and a filter with a connection piece, wherein the connection piece is connected to the inlet channel of the feed pump.

Solche Förderpumpen sind als Peripheral- oder Seitenkanalpumpen bekannt und werden häufig zum Fördern von Kraftstoff aus einem Kraftstoffbehälter zu einer Brennkraftmaschine eines Kraftfahrzeugs eingesetzt. Der Filter ist der Pumpe vorgeschaltet und dient dazu, Verunreinigungen am Eintritt in die Förderpumpe zu hindern.Such feed pumps are known as peripheral or side channel pumps and are often used for conveying fuel from a fuel tank to an internal combustion engine of a motor vehicle. The filter is upstream of the pump and serves to prevent contaminants from entering the delivery pump.

Der zu fördernde Kraftstoff kann verschiedene Temperaturen besitzen. Insbesondere bei heißem Kraftstoff, z.B. bei einem Warmstart des Kraftfahrzeugs, neigt der Kraftstoff zu verstärktem Ausgasen, wodurch sich Gasblasen aus dampfförmigem Kraftstoff bilden, die wiederum die Förderleistung der Förderpumpe erheblich beeinträchtigen. Um die Heißfördereigenschaften von Förderpumpen zu verbessern ist es bekannt, im teilringförmigen Kanal einen Kompressionsbereich vorzusehen, um den Anteil der Gasblasen zu reduzieren.The fuel to be pumped can have different temperatures. Especially with hot fuel, e.g. at a warm start of the motor vehicle, the fuel tends to increased outgassing, which gas bubbles form from vaporous fuel, which in turn significantly affect the flow rate of the feed pump. In order to improve the hot conveying properties of feed pumps, it is known to provide a compression area in the part-annular channel in order to reduce the proportion of gas bubbles.

Aus der EP 0 934 466 B1 ist bekannt, zwischen dem Einlasskanal und einem Kompressionsbereich einen Beruhigungsbereich vorzusehen. Der Beruhigungsbereich dient der Beruhigung der Strömung, wodurch ein weiteres Ausgasen des Kraftstoffs verringert wird. Nachteilig bei dieser Ausgestaltung ist, dass der Beruhigungsbereich die wirksame Länge des teilringförmigen Kanals, die zum Druckaufbau benötigt wird, verringert.From the EP 0 934 466 B1 It is known to provide a calming area between the inlet duct and a compression area. The calming area serves to calm the flow, whereby further outgassing of the fuel is reduced. The disadvantage of this design is that the calming area reduces the effective length of the part-annular channel needed for pressure build-up.

Die Druckschrift US 2005/074347 A1 , die als nächstliegender Stand der Technik angesehen wird, offenbart die Merkmale des Oberbegriffs des Anspruchs 1.The publication US 2005/074347 A1 , which is considered to be the closest prior art, discloses the features of the preamble of claim 1.

Der Erfindung liegt die Aufgabe zugrunde, eine Förderpumpe mit einem Filter zu schaffen, die gute Heißfördereigenschaften aufweist, indem das Ausgasen des zu fördernden Kraftstoffs wirksam verringert wird.The invention has for its object to provide a feed pump with a filter having good hot-conveying properties by the outgassing of the fuel to be pumped is effectively reduced.

Erfindungsgemäß wird die Aufgabe dadurch gelöst, dass der Anschlussstutzen des Filters einen Bereich mit sich in Strömungsrichtung verringernden Querschnitt aufweist und dass der Übergang des Strömungsquerschnitts des Anschlussstutzens zum Strömungsquerschnitt des Einlasskanals stetig ausgebildet ist.According to the invention the object is achieved in that the connecting piece of the filter has a region with decreasing in the flow direction cross section and that the transition of the flow cross section of the connecting piece to the flow cross section of the inlet channel is formed continuously.

Mit der Ausgestaltung des Strömungsbereichs im Filter wird der Bereich verlängert, durch den Kraftstoff der Förderpumpe, insbesondere dem Laufrad, gezielt zugeführt wird. Dadurch steht nunmehr nicht nur der Einlasskanal zur Strömungsführung des Kraftstoffs zur Verfügung. Der verlängerte Strömungsbereich mit seiner konkreten Ausgestaltung ermöglicht ein gezieltes Führen der Kraftstoffströmung. Turbulenzen werden abgebaut, was zu einem wirksamen Beruhigen der Strömung führt. Infolge der gezielten Führung kann der Kraftstoff weniger ausgasen. Der Bereich im Filter mit sich in Strömungsrichtung verringerndem Querschnitt führt zudem zu einer Kompression des Kraftstoffs, die sich positiv auf die Heißfördereigenschaft der Förderpumpe auswirkt. Ein weiterer Vorteil besteht darin, dass ein Beruhigungsbereich im teilringförmigen Kanal nicht mehr zwingend notwendig ist, wodurch die nutzbare Kanallänge für den Druckaufbau steigt. Ebenso trägt der stetige Übergang der Strömungsquerschnitte vom Anschlussstutzen des Filters und vom Einlasskanal der Förderpumpe zu einer Beruhigung des strömenden Kraftstoffs bei, da infolge nicht vorhandener Kanten oder Sprünge Turbulenzen vermieden werden.With the configuration of the flow region in the filter, the region is extended, is selectively supplied by the fuel of the feed pump, in particular the impeller. As a result, not only the inlet channel is now available for the flow guidance of the fuel. The extended flow area with its concrete design allows a targeted guiding of the fuel flow. Turbulence is dissipated, resulting in an effective calming of the flow. As a result of targeted guidance, the fuel can outgas less. The region in the filter with a flow-reducing cross-section also leads to a compression of the fuel, which has a positive effect on the hot conveyance property of the feed pump. Another advantage is that a calming area in the part-annular channel is no longer absolutely necessary, whereby the usable channel length increases for the pressure build-up. Likewise, the steady transition of the flow cross-sections of the connecting piece of the filter and the inlet channel of the feed pump contributes to a calming of the flowing fuel, as turbulence is avoided due to non-existent edges or cracks.

Bei einer Förderpumpe, deren Laufrad zwei konzentrisch angeordnete Kränze von Schaufelkammern begrenzende Laufschaufeln mit entsprechend zugeordneten teilringförmigen Kanälen im Pumpengehäuse besitzt, hat es sich als vorteilhaft erwiesen, jedem teilringförmigen Kanal ein Einlasskanal vorzuschalten und den Anschlussstutzen des Filters vor dem Übergang in die Einlasskanäle mit jeweils zwei voneinander getrennten Strömungsquerschnitten auszubilden. Dadurch wird jeder der beiden Einlasskanäle bis in den Bereich des Filters verlängert, so dass der Kraftstoff eine ausreichende Strecke zur Beruhigung gegeben ist.In a feed pump whose impeller has two concentrically arranged rings of vane chambers bounding blades with correspondingly associated part-annular channels in the pump housing, it has proven to be advantageous to each upstream an inlet channel and the connecting piece of the filter before the transition into the inlet channels, each with two form separate flow cross sections. As a result, each of the two intake ports is extended into the region of the filter, so that the fuel is given a sufficient distance for reassurance.

Die voreinander getrennten Strömungsquerschnitte lassen sich gemäß einer vorteilhaften Ausgestaltung besonders einfach durch eine im Anschlussstutzen angeordnete Trennwand ausbilden.According to an advantageous embodiment, the flow cross-sections which are separated from one another can be formed particularly easily by a partition wall arranged in the connecting piece.

Verwirbelungen im Kraftstoff, welche das Ausgasen begünstigen, werden beim Leiten des Kraftstoffs mit Richtungsänderungen im Filter vermieden, wenn die Radien der Richtungsänderungen im Strömungsverlauf des Filters mindestens 20 % der Höhe oder Breite des Strömungsquerschnitts in diesem Bereich entsprechen.Turbulence in the fuel that promotes outgassing is avoided when the fuel is directed with changes in the direction of the filter when the radii of the directional changes in the flow of the filter are at least 20% of the height or width of the flow area in that range.

Gemäß einer weiteren vorteilhaften Ausgestaltung werden Verwirbelungen des Kraftstoffs infolge von Querschnittsänderungen dadurch vermieden, dass Querschnittsänderungen im Strömungsverlauf stetig ausgebildet sind.According to a further advantageous embodiment, turbulences of the fuel due to cross-sectional changes are avoided in that cross-sectional changes in the flow profile are formed continuously.

Eine besonders gute und dichte Verbindung des Filters mit der Förderpumpe wird dadurch erreicht, dass der Anschlussstutzen des Filters in eine Aufnahme des Pumpengehäuses eingepresst oder eingeklipst ist, wobei die Aufnahme im Pumpendeckel des aus Pumpendeckel und Pumpenboden gebildeten Pumpengehäuses angeordnet ist.A particularly good and tight connection of the filter with the feed pump is achieved in that the connecting piece of the filter is pressed or clipped into a receptacle of the pump housing, wherein the receptacle is arranged in the pump cover of the pump cover and pump bottom formed pump housing.

An einem Ausführungsbeispiel wird die Erfindung näher beschrieben. In der dazugehörigen Zeichnung zeigen

Figur 1
eine schematische Darstellung einer erfindungsgemäßen Förderpumpe in einem Kraftstoffbehälter eines Kraftfahrzeugs und
Figur 2
einen Schnitt durch den Filter und die Pumpstufe der Förderpumpe nach Figur 1.
In one embodiment, the invention will be described in more detail. In the accompanying drawing show
FIG. 1
a schematic representation of a feed pump according to the invention in a fuel tank of a motor vehicle and
FIG. 2
a section through the filter and the pumping stage of the feed pump to FIG. 1 ,

Figur 1 zeigt einen Kraftstoffbehälter 1 eines nicht dargestellten Kraftfahrzeugs. In dem Kraftstoffbehälter 1 ist eine Förderpumpe 2 angeordnet, welche auch in einem Schwalltopf angeordnet sein könnte. Die Förderpumpe 2 besitzt ein Gehäuse 3, welches das Anschlussstück 4 und die Pumpstufe 5 miteinander verbindet. Ein Filter 6 ist über seinen Anschlussstutzen 7 mit der Förderpumpe 2 verbunden. Die Förderpumpe 2 saugt durch den Filter 6 Kraftstoff aus dem Kraftstoffbehälter 1 an. Über einen Auslassstutzen 8 wird der Kraftstoff mit höherem Druck mittels einer Vorlaufleitung 9 zur Brennkraftmaschine 10 des Kraftfahrzeug gefördert. FIG. 1 shows a fuel tank 1 of a motor vehicle, not shown. In the fuel tank 1, a feed pump 2 is arranged, which could also be arranged in a swirl pot. The feed pump 2 has a housing 3, which connects the connecting piece 4 and the pumping stage 5 with each other. A filter 6 is connected via its connecting piece 7 with the feed pump 2. The feed pump 2 sucks fuel from the fuel tank 1 through the filter 6. About an outlet 8, the fuel is conveyed at a higher pressure by means of a flow line 9 to the engine 10 of the motor vehicle.

Figur 2 zeigt einen Schnitt durch den unteren Teil der Förderpumpe 1 mit der Pumpstufe 5 und dem Filter 6. Die Pumpstufe 5 besteht aus einem Pumpengehäuse 11, in dem ein Laufrad 12 angeordnet ist. Das Pumpengehäuse 11 wird von einem Pumpenboden 13 und einem Pumpendeckel 14 gebildet. Das Laufrad 12 wird von einer Welle 15 angetrieben, welche Bestandteil eines nicht näher dargestellten Elektromotors der Förderpumpe 2 ist. Das Laufrad 14 besitzt an seinen Seitenflächen jeweils zwei konzentrisch angeordnete Kränze 16-19 von Schaufelkammern begrenzenden Laufschaufeln 20-23, wobei die Schaufelkammern sich gegenüberliegender Kränze 16, 18; 17, 19 so ausgebildet sind, dass das Laufrad 12 axial durchströmbar ist. Den Kränzen 16-19 gegenüberliegend sind im Pumpengehäuse 11 teilringförmige Kanäle 24-27 angeordnet, wobei den Kränzen 16, 18; 17, 19 jeweils ein Einlasskanal im Pumpendeckel 14 und ein Auslasskanal im Pumpenboden 13 zugeordnet ist. In der gezeigten Darstellung liegt lediglich der Einlasskanal 28 für die Kränze 16, 18 in der Schnittebene. FIG. 2 shows a section through the lower part of the feed pump 1 with the pumping stage 5 and the filter 6. The pumping stage 5 consists of a pump housing 11 in which an impeller 12 is arranged. The pump housing 11 is formed by a pump bottom 13 and a pump cover 14. The impeller 12 is driven by a shaft 15, which is part of an electric motor, not shown, of the feed pump 2. The impeller 14 has on its side surfaces in each case two concentrically arranged rings 16-19 of blade chambers bounding blades 20-23, wherein the blade chambers of opposing rings 16, 18; 17, 19 are formed so that the impeller 12 is axially flowed through. The wreaths 16-19 opposite are partially annular channels 24-27 arranged in the pump housing 11, wherein the rings 16, 18; 17, 19 each have an inlet channel in the pump cover 14 and an outlet channel is assigned in the pump bottom 13. In the illustration shown, only the inlet channel 28 for the rings 16, 18 is in the cutting plane.

Im Bereich des Einlasskanals 28 besitzt der Pumpendeckel 14 eine Aufnahme 29, in die der Anschlussstutzen 7 des Filters 6 eingepresst ist. Der Anschlussstutzen 7 enthält einen Kanal 30, durch den der Kraftstoff, der zuvor über das am Anschlussstutzen 7 befestigte Filtergewebe 31 angesaugt wurde, zum Einlasskanal 28 strömt. In dem Anschlussstutzen 7 ist ein Bereich 32 mit sich in Strömungsrichtung verringernden Querschnitt ausgebildet. Dieser trichterförmige Bereich 32 führt zu einer ersten Kompression des durchströmenden Kraftstoffs und somit zu einer Beruhigung der Strömung. Eventuell im Kraftstoff vorhande Gasblasen werden bereits in diesem Bereich 32 reduziert.In the region of the inlet channel 28, the pump cover 14 has a receptacle 29, in which the connection piece 7 of the filter 6 is pressed. The connecting piece 7 contains a channel 30 through which the fuel, which was previously sucked in via the filter cloth 31 fastened to the connecting piece 7, flows to the inlet channel 28. In the connecting piece 7, a region 32 is formed with decreasing in the flow direction cross-section. This funnel-shaped region 32 leads to a first compression of the fuel flowing through and thus to a calming of the flow. Any existing in fuel gas bubbles are already reduced in this area 32.

Im weiteren Verlauf erfolgt eine Umlenkung der Strömung um 90°, wobei die Radien 33, 34 der Umlenkung in etwa 30 % der Höhe des Strömungsquerschnitts des Bereichs 32 betragen. Infolge der groß gestalteten Radien 33, 34 erfolgt eine sanfte Umlenkung. Verwirbelungen, die zum Ausgasen des Kraftstoffs führen können, werden somit vermieden. Des Weiteren trägt der stetige Übergang, d. h. ohne Vorsprünge oder Kanten, zwischen dem Anschlussstutzen 7 und dem Einlasskanal 28 dazu bei, den Kraftstoff in ruhiger Strömung dem Laufrad zuzuführen.In the further course, the flow is deflected by 90 °, wherein the radii 33, 34 of the deflection amount to approximately 30% of the height of the flow cross section of the region 32. Due to the large radii 33, 34 is a gentle deflection. Turbulences that can lead to outgassing of the fuel are thus avoided. Furthermore, the steady transition, i. H. without protrusions or edges, between the connecting piece 7 and the inlet channel 28 to supply the fuel in a quiet flow to the impeller.

Der in Strömungsrichtung abnehmende Strömungsquerschnitt im Einlasskanal 28 trägt seinerseits ebenfalls dazu bei, das Ausgasen des Kraftstoffs zu verhindern, beziehungsweise im Kraftstoff vorhandene Gasblasen zu eliminieren.The decreasing in the flow direction flow cross section in the inlet channel 28 in turn also contributes to prevent the outgassing of the fuel, or to eliminate existing gas bubbles in the fuel.

Der Anschlussstutzen 7 besitzt unmittelbar vor dem Übergang zum Pumpendeckel 14 eine Trennwand 35, die den einen Strömungsquerschnitt in zwei Strömungsquerschnitte 36, 37 aufteilt. Der Strömungsquerschnitt 37 dient dazu, einen Teil des Kraftstoffs den radial inneren Kränzen 16, 18 zuzuführen. Der dazugehörige Einlasskanal 38 ist in dem Schnitt aufgrund seiner zum Einlasskanal 28 versetzten Anordnung nur teilweise sichtbar. Durch die Trennwand 35 wird der Kraftstoffstrom bereits vor Erreichen des Pumpendeckels 14 entsprechend aufgeteilt, um nach der Aufteilung des Kraftstoffstroms noch möglichst lange Strecken zur Verfügung zu stellen, die für die Beruhigung der Kraftstoffströmung nutzbar sind.The connecting piece 7 has immediately before the transition to the pump cover 14, a partition wall 35 which divides the one flow cross section into two flow cross sections 36, 37. The flow cross-section 37 serves to supply a portion of the fuel to the radially inner rings 16, 18. Of the associated inlet channel 38 is only partially visible in the section due to its offset to the inlet channel 28 arrangement. By the partition wall 35 of the fuel flow is already divided accordingly before reaching the pump cover 14 to provide after the division of the fuel flow as long as possible routes that can be used for calming the flow of fuel.

Claims (6)

  1. Feed pump having a rotor which is driven and rotates in a pump housing, with at least one ring of rotor blades delimiting blade chambers and with at least one part-annular duct arranged in the pump housing in the region of the rotor blades, which duct forms, with the blade chambers, a delivery chamber that is provided for delivering a liquid from an inlet duct to an outlet duct, and with a filter having a connection pipe, wherein the connection pipe is connected to the inlet duct of the feed pump, characterized in that the connection pipe (7) of the filter (6) has a region (32) whose cross section reduces in the flow direction, and in that the transition from the flow cross section of the connection pipe (7) to the flow cross section of the inlet duct (28) is continuous.
  2. Feed pump according to Claim 1, characterized in that the rotor (12) possesses, on each side, two concentric rings (16-19) of rotor blades (20-23) that delimit blade chambers, with appropriately assigned part-annular ducts (24-27) in the pump housing (11), in that each part-annular duct (24, 26; 25, 27) is connected downstream of an inlet duct (28, 38), and the connection pipe (7) of the filter (6) has, prior to the transition into the inlet ducts (28, 38), two mutually separate flow cross sections (36, 37).
  3. Feed pump according to Claim 2, characterized in that the two mutually separate flow cross sections (36, 37) are formed by a partition (35) arranged in the connection pipe (7).
  4. Feed pump according to one of the preceding Claims 1 to 3, characterized in that radii (33, 34) of direction changes in the flow profile in the filter (6) correspond to at least 20% of the height or breadth of the flow cross section in that region (32).
  5. Feed pump according to one of the preceding claims, characterized in that, in the flow profile, cross section changes (32) are continuous.
  6. Feed pump according to one of the preceding claims, characterized in that the connection pipe (7) of the filter (6) is pressed or snap fitted into a port (29) of the pump housing (14).
EP07802474.2A 2006-08-04 2007-08-02 Feed pump having a filter Active EP2049801B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102006036900 2006-08-04
DE102007003555.3A DE102007003555B4 (en) 2006-08-04 2007-01-24 Feed pump with filter
PCT/EP2007/058015 WO2008015255A1 (en) 2006-08-04 2007-08-02 Feed pump having a filter

Publications (2)

Publication Number Publication Date
EP2049801A1 EP2049801A1 (en) 2009-04-22
EP2049801B1 true EP2049801B1 (en) 2017-05-17

Family

ID=38710490

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07802474.2A Active EP2049801B1 (en) 2006-08-04 2007-08-02 Feed pump having a filter

Country Status (5)

Country Link
EP (1) EP2049801B1 (en)
JP (1) JP4909414B2 (en)
CN (1) CN101501340B (en)
DE (1) DE102007003555B4 (en)
WO (1) WO2008015255A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015144570A1 (en) 2014-03-26 2015-10-01 Continental Automotive Gmbh Method for operating a pump
CN105946340B (en) * 2016-06-15 2018-01-19 湖州惠盛机械有限公司 A kind of circular screen printer mill base delivery pump

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA796107B (en) * 1978-11-28 1980-10-29 Compair Ind Ltd Regenerative rotodynamic machines
JPH0411251A (en) * 1990-04-27 1992-01-16 Konica Corp Fixer for black and white silver halide photographic sensitive material
DE4201401A1 (en) * 1992-01-21 1993-07-22 Bosch Gmbh Robert Displacement pump conveying fuel in motor vehicle - has drive motor installed into jar-shaped housing as complete prefabricated component of motor housing
DE19643728A1 (en) * 1996-10-23 1998-04-30 Mannesmann Vdo Ag Feed pump
JPH11218087A (en) * 1997-11-03 1999-08-10 Walbro Corp Force balance translot fuel pump
BR0001877A (en) * 1999-03-29 2000-10-31 Walbro Corp Fuel pump tank reservoir
US6932562B2 (en) * 2002-06-18 2005-08-23 Ti Group Automotive Systems, L.L.C. Single stage, dual channel turbine fuel pump
JP4209748B2 (en) * 2003-09-17 2009-01-14 愛三工業株式会社 Fuel pump
JP2005113686A (en) * 2003-10-02 2005-04-28 Aisan Ind Co Ltd Fuel pump
CN2700607Y (en) * 2004-05-24 2005-05-18 株洲鑫龙石化设备有限公司 Hydraulic submersible pump
JP2006037832A (en) * 2004-07-27 2006-02-09 Aisan Ind Co Ltd Fuel pump unit and fuel pump
JP2006177321A (en) * 2004-12-24 2006-07-06 Denso Corp Fuel pump
US7165932B2 (en) * 2005-01-24 2007-01-23 Visteon Global Technologies, Inc. Fuel pump having dual single sided impeller

Also Published As

Publication number Publication date
DE102007003555A1 (en) 2008-02-21
CN101501340B (en) 2013-05-29
WO2008015255A1 (en) 2008-02-07
JP4909414B2 (en) 2012-04-04
EP2049801A1 (en) 2009-04-22
CN101501340A (en) 2009-08-05
DE102007003555B4 (en) 2016-11-10
JP2009545702A (en) 2009-12-24

Similar Documents

Publication Publication Date Title
EP2627907B1 (en) Side channel blower, in particular a secondary air blower for an internal combustion machine
EP1805408B1 (en) Fuel pump and fuel supply system for an internal combustion engine of a motor vehicle equipped with a fuel pump
EP3224483B1 (en) Centrifugal pump with guiding device
WO2016110371A1 (en) Side-channel blower for an internal combustion engine, comprising a wide interrupting gap
EP1192359A1 (en) Feed pump
WO2016082916A1 (en) Compressor for an exhaust-gas turbocharger
WO2016110373A1 (en) Side-channel blower for an internal combustion engine
EP2049801B1 (en) Feed pump having a filter
DE202013010204U1 (en) Multi-inlet vacuum pump
EP1103723B1 (en) Fuel pump
EP3303845B1 (en) Self-priming pump assembly
EP2513483B1 (en) Fuel pump
EP1606516B1 (en) Fuel pump
EP1021655B1 (en) Delivery pump
EP2342464B1 (en) Side channel blower, in particular secondary air blower for an internal combustion engine
DE102007026533A1 (en) Fuel pump
DE10054590B4 (en) Automobile fuel pump has 2 concentric feed chambers for feeding fuel to engine and to suction pump simultaneously
EP3728860B1 (en) Side channel blower, in particular secondary air blower for an internal combustion engine
DE102012222336B4 (en) flow machine
DE102013000378B4 (en) tubefan
EP2754344B1 (en) Flow engine for liquids
DE102014114801B4 (en) Turbomachine with semi-axial impeller
DE102021101829A1 (en) Rotary pump with split flow
DE102015100350B3 (en) Gear pump and humidifier with such a gear pump
WO2013087692A1 (en) Fuel delivery unit

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20090304

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

DAX Request for extension of the european patent (deleted)
RBV Designated contracting states (corrected)

Designated state(s): DE ES FR GB IT

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20161206

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502007015656

Country of ref document: DE

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170517

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502007015656

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170517

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20180220

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20170817

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170817

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

REG Reference to a national code

Ref country code: DE

Ref legal event code: R084

Ref document number: 502007015656

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 502007015656

Country of ref document: DE

Owner name: VITESCO TECHNOLOGIES GMBH, DE

Free format text: FORMER OWNER: CONTINENTAL AUTOMOTIVE GMBH, 30165 HANNOVER, DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 502007015656

Country of ref document: DE

Owner name: VITESCO TECHNOLOGIES GMBH, DE

Free format text: FORMER OWNER: VITESCO TECHNOLOGIES GMBH, 30165 HANNOVER, DE

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230530

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20230823

Year of fee payment: 17

Ref country code: DE

Payment date: 20230831

Year of fee payment: 17