EP1738068B1 - Delivery unit - Google Patents

Delivery unit Download PDF

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Publication number
EP1738068B1
EP1738068B1 EP05707867A EP05707867A EP1738068B1 EP 1738068 B1 EP1738068 B1 EP 1738068B1 EP 05707867 A EP05707867 A EP 05707867A EP 05707867 A EP05707867 A EP 05707867A EP 1738068 B1 EP1738068 B1 EP 1738068B1
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EP
European Patent Office
Prior art keywords
delivery unit
shaped elements
unit according
baffle
elements
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.)
Expired - Fee Related
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EP05707867A
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German (de)
French (fr)
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EP1738068A1 (en
Inventor
Torsten Barz
Joachim Hoffmann
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Continental Automotive GmbH
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Continental Automotive GmbH
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Publication of EP1738068A1 publication Critical patent/EP1738068A1/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00Apparatus 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
    • F02M37/04Feeding by means of driven pumps
    • F02M37/08Feeding by means of driven pumps electrically driven
    • F02M37/10Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir
    • F02M37/106Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir the pump being installed in a sub-tank
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00Apparatus 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
    • F02M37/02Feeding by means of suction apparatus, e.g. by air flow through carburettors
    • F02M37/025Feeding by means of a liquid fuel-driven jet pump
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00Apparatus 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
    • F02M37/22Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32Arrangements 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
    • F02M37/44Filters structurally associated with pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00Apparatus 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
    • F02M37/22Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32Arrangements 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
    • F02M37/50Filters arranged in or on fuel tanks

Definitions

  • the invention relates to a delivery unit with a swirl pot, a fuel pump arranged therein and arranged at the bottom of the swirl pot radially flowed filter, which is formed by axially protruding from the bottom of the swirl pot mold elements, so that in each case formed an axially extending gap between each two adjacent mold elements is, and surrounds a arranged in the bottom of the baffle inlet opening.
  • the delivery unit serves to convey fuel from the fuel tank to an internal combustion engine of a motor vehicle.
  • a filter ring is arranged at the bottom of the swirl pot.
  • the filter ring is formed by projections provided at the bottom of the swirl pot ( WO 96/41727 ). These projections are arranged at a distance from each other and at the same time serve as a footprint for the swirl pot.
  • the formations form a filter with axially extending gaps, which is flowed radially.
  • the inlet opening through which the pre-filtered fuel enters the swirl pot is located within this ring of moldings.
  • the width of the axially extending column is a measure of the degree of filtering of the gap filter.
  • the disadvantage of this device is that due to the small width of the axially extending column, the flow cross-section for the fuel flowing to the inlet opening is reduced. In order to ensure sufficient supply of the intake opening with fuel, a certain flow cross section must not be exceeded. As a result, the gap width can not be chosen arbitrarily small, so that the filter degree of the split filter is limited.
  • the present invention is therefore an object of the invention to provide a conveyor unit with a filter that provides both sufficient fuel for the intake port and has a high degree of filtration.
  • the object is achieved in that perpendicular to the columns and perpendicular to the flow direction at least one region is arranged to flow through, and in that the at least one region connects at least two adjacent gaps in the axial extent, that the regions for flowing through at least one, preferably three, arranged at the bottom of the baffle uprising elements having a greater axial length than the mold elements are formed, and that the regions by molding elements different axial lengths are formed.
  • the areas can thus be produced with little effort and thus cost, when the swirl pot sits with the riot elements on the tank bottom.
  • the difference between the axial length of the riot elements and the mold elements determines the distance of the mold elements to the tank bottom, resulting in the areas for flowing through.
  • the regions are formed by shaped elements with different axial lengths, it is sufficient to form at least one, preferably three, shaped elements with a greater axial length. With very many form elements, 5% to 50% of the form elements can also have a greater axial length. These mold elements sit on the tank bottom, while the other form elements are arranged at a distance from the tank bottom, so that between the end faces the axially shorter form elements and the tank bottom form the areas for flowing through.
  • An increase in the degree of filtering can be achieved in a simple manner by the arrangement of the mold elements with respect to the flow direction in several consecutive rows.
  • a staggered in the flow arrangement of the form elements in successive rows causes a labyrinth formation, whereby the degree of filtering can also be improved.
  • a selective filter is achieved by arranging mold elements of equal axial length in a row. It is advantageous if the form elements of the radially outer row have a smaller axial length than the form elements of the radially inner rows.
  • the filter degree can be influenced by the fact that the gaps located between the form elements are designed differently in their length and width.
  • a simple design of the form elements allows the arrangement in segments at the bottom of the swirl pot. Since the design of the form elements determines the degree of filtration, there is a further advantage in that the delivery unit can be adapted to the corresponding conditions of use solely by targeted selection of suitable segments with regard to the degree of filtration.
  • this embodiment allows the replacement of the segments, while the swirl pot can be maintained unchanged. The replacement of the segments can be realized for example by appropriate use in the injection molds.
  • the adaptation to different conditions of use is facilitated if the segments are detachably connected to the swirl pot, preferably by means of locking or plug connections.
  • a detachable connection of the segments on the swirl pot also allows a replacement of the segments, especially in case of wear or clogging of the filter.
  • a weakening of the degree of filtering is avoided if the distance of second adjacent segments is not greater than the distance of the mold elements from each other.
  • the form elements can be arranged in one or more rows on one segment or on several segments on a segment, wherein the segments are also arranged in the flow direction in a plurality of rows.
  • the filter no longer has to be arranged exclusively at the radially outer end of the surge pot bottom.
  • the invention allows the arrangement of the mold elements directly in the region of the inlet opening.
  • the filter may also be formed star-shaped or polygon.
  • the fuel tank 1 shown in FIG. 1 contains a delivery unit 2.
  • the delivery unit 2 is fitted with an opening 3 of the fuel tank 1, a flange 4 closing the opening 3 in the fuel tank 1.
  • the conveyor unit 2 comprises a surge pot 5 for receiving fuel and arranged therein a fuel pump 6, which promotes the fuel to an internal combustion engine, not shown, of the motor vehicle.
  • the swirl pot 5 it is conceivable to use the swirl pot 5 in a suction unit in which the fuel pump is arranged outside the swirl pot.
  • riot elements 8 are formed, with which the sound pot 5 is seated on the tank bottom 9. Also formed on the bottom 7 of the swirl pot 5 form elements 10 are arranged at intervals to each other so that two adjacent mold elements 10 each include a gap 11. A smaller axial extent of the mold elements 10 relative to the riot elements 8 causes the formation of regions 12 between the mold elements 10 and the tank bottom 9, so that fuel can flow through the gaps 11 and the regions 12. The column 11 and the regions 12 are chosen so small that contained in the fuel particles are retained by the mold elements 10.
  • FIG. 2 shows the top view of the bottom 7 of the swirl pot 5 FIG. 1 ,
  • the bottom 7 has an inlet opening 13, passes through the fuel from the fuel tank 1 into the swirl pot 5.
  • the inlet opening 13 is provided with spacers 14, which have the same axial length as the riot elements 8.
  • the inlet opening 13 is surrounded by mold elements 10, which are integrally formed on the bottom 7 of the swirl pot 5. Due to the distance between the form elements 10 with each other between these axially extending column 11 are formed.
  • the smaller axial extension of the mold elements 10 with respect to the riot control elements 8 also causes the formation of areas 12 between the end faces 16 of the mold elements 10 and the tank bottom 9, wherein each area 12 each two of the axially extending column 11 connects.
  • the fuel in the tank 1 can thus pass through the gaps 11 and the regions 12 to the inlet opening 13. Particles contained in the fuel are kept away from the inlet opening 13 by the mold elements 10.
  • the axial height of the regions 12 and thus the filter degree can be adjusted specifically.
  • the mold elements 8 are arranged one behind the other in the flow direction in two rows, with a gap 11 in the radially outer row following a mold element 8 in the radially inner row and vice versa.
  • FIG. 3 shows an enlarged view of the inlet opening 13 in the bottom 7 of the swirl pot 5.
  • the mold elements 10 are arranged in four segments 15 around the inlet opening 13.
  • the segments 15 can be connected both integrally and releasably by means of a latching and plug connection with the swirl pot 5.
  • the distances 16 of the segments 15 essentially correspond to the widths of the gaps 11.
  • the mold elements 10 according to FIG. 3 arranged asymmetrically.
  • the gaps 11a, 11b formed between two shaped elements 10 vary in their length and width.
  • the mold elements 10 have a smaller axial extent x than the riot elements 8 (y), which rest on the bottom of the tank, not shown. Due to this difference in the axial extent form 10 areas between the tank bottom 9 and the end faces 16 of the mold elements 12, through which, as well as through the column 11, fuel flows to the inlet port 13.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Filtration Of Liquid (AREA)

Abstract

The invention relates to a delivery unit (2) comprising a swirl pot (5), a fuel pump (6) placed therein, and a filter, which is placed on the bottom (7) of the swirl pot (5) and which is radially flowed against. This filter is formed by shaped elements axially protruding from the bottom (7) of the swirl pot (5) whereby forming an axially extending gap (11, 11a, 11b) between every two adjacent shaped elements (10), and the filter surrounds an inlet opening (13) located in the bottom (7) of the swirl pot (5). At least one flow-through area (12) is situated perpendicular to the gaps (11, 11a, 11b) and perpendicular to the flow-through direction, this at least one area (12) connecting at least two adjacent gaps (11, 11a, 11b).

Description

Gegenstand der Erfindung ist eine Fördereinheit mit einem Schwalltopf, einer darin angeordneten Kraftstoffpumpe und einem am Boden des Schwalltopfes angeordneten radial angeströmten Filter, welcher von axial vom Boden des Schwalltopfes abstehenden Formelementen gebildet ist, so dass zwischen jeweils zwei benachbarten Formelementen jeweils ein axial verlaufender Spalt ausgebildet ist, und der eine im Boden des Schwalltopfes angeordnete Einlassöffnung umgibt. Die Fördereinheit dient zum Fördern von Kraftstoff aus dem Kraftstoffbehälter zu einer Brennkraftmaschine eines Kraftfahrzeugs.The invention relates to a delivery unit with a swirl pot, a fuel pump arranged therein and arranged at the bottom of the swirl pot radially flowed filter, which is formed by axially protruding from the bottom of the swirl pot mold elements, so that in each case formed an axially extending gap between each two adjacent mold elements is, and surrounds a arranged in the bottom of the baffle inlet opening. The delivery unit serves to convey fuel from the fuel tank to an internal combustion engine of a motor vehicle.

Es ist bekannt, derartige Fördereinheiten in Kraftstoffbehältern einzusetzen. Im Kraftstoff enthaltene Verunreinigungen können in die Kraftstoffpumpe gelangen und diese beschädigen. Um die Kraftstoffpumpe vor diesen Verunreinigungen zu schützen, wird der von der Kraftstoffpumpe angesaugte Kraftstoff gefiltert. Dazu ist der Kraftstoffpumpe ein Grobfilter vorgeschaltet, um die Partikel, die zu einer Beschädigung der Kraftstoffpumpe führen könnten, vom Ansaugbereich der Kraftstoffpumpe fern zu halten.It is known to use such conveyor units in fuel tanks. Impurities contained in the fuel can enter the fuel pump and damage it. To protect the fuel pump from these contaminants, the fuel sucked in by the fuel pump is filtered. For this purpose, the fuel pump is preceded by a coarse filter to keep the particles, which could lead to damage to the fuel pump, away from the intake of the fuel pump.

Neben verschiedenen Filterbauformen, die zusätzlich als separate Teile am Schwalltopf montiert werden, ist es bekannt, am Boden des Schwalltopfes einen Filterkranz anzuordnen. Der Filterkranz wird durch am Boden des Schwalltopfes vorgesehene Anformungen gebildet ( WO 96/41727 ). Diese Anformungen sind zueinander mit einem Abstand angeordnet und dienen gleichzeitig als Aufstandsfläche für den Schwalltopf. Steht der Schwalltopf auf dem Boden des Kraftstoffbehälters, bilden die Anformungen einen Filter mit axial verlaufenden Spalten, der radial angeströmt wird. Die Einlassöffnung, durch die der vorgefilterte Kraftstoff in den Schwalltopf gelangt, befindet sich innerhalb dieses Kranzes von Anformungen. Die Breite der axial verlaufenden Spalte ist dabei ein Maß für den Filtergrad des Spaltfilters. Der Nachteil dieser Vorrichtung besteht darin, dass sich durch die geringe Breite der axial verlaufenden Spalte der Durchflussquerschnitt für den zur Einlassöffnung strömenden Kraftstoff verringert. Um eine ausreichende Versorgung der Ansaugöffnung mit Kraftstoff zu gewährleisten, darf ein bestimmter Durchflussquerschnitt nicht unterschritten werden. Infolge dessen kann die Spaltbreite nicht beliebig klein gewählt werden, so dass der Filtergrad des Spaltfilters begrenzt ist.In addition to various filter designs, which are also mounted as separate parts on the swirl pot, it is known to arrange a filter ring at the bottom of the swirl pot. The filter ring is formed by projections provided at the bottom of the swirl pot ( WO 96/41727 ). These projections are arranged at a distance from each other and at the same time serve as a footprint for the swirl pot. Is that the Swirl pot on the bottom of the fuel tank, the formations form a filter with axially extending gaps, which is flowed radially. The inlet opening through which the pre-filtered fuel enters the swirl pot is located within this ring of moldings. The width of the axially extending column is a measure of the degree of filtering of the gap filter. The disadvantage of this device is that due to the small width of the axially extending column, the flow cross-section for the fuel flowing to the inlet opening is reduced. In order to ensure sufficient supply of the intake opening with fuel, a certain flow cross section must not be exceeded. As a result, the gap width can not be chosen arbitrarily small, so that the filter degree of the split filter is limited.

Aus der US 6,260,543 B ist bekannt, am Boden des Schwalltopfes Verstärkungselemente anzuordnen, welche eine geringere axiale Erstreckung als die Füße besitzen, mit denen der Schwalltopf auf dem Tankboden aufsteht. Die DE 199 15 255 A offenbart einen Filter an der Unterseite eines Schwalltopfes, welcher aus einem parallel zum Schwalltopfboden angeordneten Siebgewebe besteht, wobei Abstandshalter eine Beruhrung von Gewebe und Boden verhindern.From the US 6,260,543 B It is known to arrange reinforcing elements at the bottom of the baffle pot, which have a smaller axial extent than the feet with which the baffle pot rests on the tank bottom. The DE 199 15 255 A discloses a filter on the underside of a baffle, which consists of a screen fabric arranged parallel to the baffle bottom, wherein spacers prevent contact of tissue and soil.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, eine Fördereinheit mit einem Filter zu schaffen, der sowohl ausreichend Kraftstoff für die Ansaugöffnung bereitstellt als auch einen hohen Filtergrad besitzt.The present invention is therefore an object of the invention to provide a conveyor unit with a filter that provides both sufficient fuel for the intake port and has a high degree of filtration.

Erfindungsgemäß wird die Aufgabe dadurch gelöst, dass senkrecht zu den Spalten und senkrecht zur Durchströmrichtung mindestens ein Bereich zum Durchströmen angeordnet ist, und dass der mindestens eine Bereich mindestens zwei benachbarte Spalte in axialer Erstreckung verbindet, dass die Bereiche zum Durchströmen durch mindestens ein, vorzugsweise drei, am Boden des Schwalltopfes angeordnete Aufstandselemente mit einer größeren axialen Länge als die Formelemente gebildet sind, und dass die Bereiche durch Formelemente mit unterschiedlichen axialen Längen gebildet sind.According to the invention the object is achieved in that perpendicular to the columns and perpendicular to the flow direction at least one region is arranged to flow through, and in that the at least one region connects at least two adjacent gaps in the axial extent, that the regions for flowing through at least one, preferably three, arranged at the bottom of the baffle uprising elements having a greater axial length than the mold elements are formed, and that the regions by molding elements different axial lengths are formed.

Durch die Anordnung weiterer Bereiche zum Durchströmen werden weitere Flächen für das Anströmen des Filters erschlossen. Die Vergrößerung der anströmbaren Fläche erlaubt entweder einen größeren Durchströmquerschnitt des Filters oder bei gleich bleibendem Durchströmquerschnitt eine Verkleinerung der Spalte und der dazu senkrecht angeordneten Bereiche. Die Verkleinerung der Spalte und Bereiche hat den Vorteil, dass kleinere Partikel als bisher zurückgehalten werden, was zu einer Erhöhung des Filtergrades führt.By arranging further areas for flowing through further surfaces are opened up for the flow of the filter. The enlargement of the inflowable surface allows either a larger flow cross-section of the filter or with a constant flow cross-section, a reduction of the gap and the perpendicular thereto arranged areas. The reduction of the gaps and areas has the advantage that smaller particles are retained than before, which leads to an increase in the degree of filtration.

Die Bereiche lassen sich somit mit geringem Aufwand und somit kostengünstig herstellen, wenn der Schwalltopf mit den Aufstandselementen auf dem Tankboden aufsitzt. Die Differenz der axialen Länge der Aufstandselemente und der Formelemente bestimmt den Abstand der Formelemente zum Tankboden, woraus sich die Bereiche zum Durchströmen ergeben.The areas can thus be produced with little effort and thus cost, when the swirl pot sits with the riot elements on the tank bottom. The difference between the axial length of the riot elements and the mold elements determines the distance of the mold elements to the tank bottom, resulting in the areas for flowing through.

Sofern die Bereiche durch Formelemente mit unterschiedlichen axialen Längen gebildet sind, ist es ausreichend, mindestens ein, vorzugsweise drei, Formelemente mit einer größeren axialen Länge auszubilden. Bei sehr vielen Formelementen können auch 5 % bis 50 % der Formelemente eine größere axiale Länge aufweisen. Diese Formelemente sitzen auf dem Tankboden auf, während die anderen Formelemente in einem Abstand zum Tankboden angeordnet sind, so dass sich zwischen den Stirnflächen der axial kürzeren Formelemente und dem Tankboden die Bereiche zum Durchströmen ausbilden.If the regions are formed by shaped elements with different axial lengths, it is sufficient to form at least one, preferably three, shaped elements with a greater axial length. With very many form elements, 5% to 50% of the form elements can also have a greater axial length. These mold elements sit on the tank bottom, while the other form elements are arranged at a distance from the tank bottom, so that between the end faces the axially shorter form elements and the tank bottom form the areas for flowing through.

Eine Erhöhung des Filtergrades lässt sich in einfacher Weise durch die Anordnung der Formelemente bezogen auf die Durchströmrichtung in mehreren hintereinander liegenden Reihen erzielen. Eine in Durchströmrichtung versetzte Anordnung der Formelemente in aufeinander folgenden Reihen bewirkt eine Labyrinthbildung, wodurch sich der Filtergrad ebenfalls verbessern lässt.An increase in the degree of filtering can be achieved in a simple manner by the arrangement of the mold elements with respect to the flow direction in several consecutive rows. A staggered in the flow arrangement of the form elements in successive rows causes a labyrinth formation, whereby the degree of filtering can also be improved.

Ein selektiver Filter wird durch die Anordnung von Formelemente gleicher axialer Länge in einer Reihe ereicht. Dabei ist es vorteilhaft, wenn die Formelemente der radial äußeren Reihe eine geringere axiale Länge als die Formelemente der radial inneren Reihen besitzen.A selective filter is achieved by arranging mold elements of equal axial length in a row. It is advantageous if the form elements of the radially outer row have a smaller axial length than the form elements of the radially inner rows.

In einer weiteren Ausgestaltung lässt sich der Filtergrad dadurch beeinflussen, dass die zwischen den Formelementen befindlichen Spalte in ihrer Länge und Breite unterschiedlich ausgebildet sind.In a further embodiment, the filter degree can be influenced by the fact that the gaps located between the form elements are designed differently in their length and width.

Eine einfache Gestaltung der Formelemente ermöglicht die Anordnung in Segmenten am Boden des Schwalltopfes. Da die Gestaltung der Formelemente den Filtergrad bestimmt, besteht ein weiterer Vorteil darin, dass die Fördereinheit allein durch gezielte Auswahl geeigneter Segmente hinsichtlich des Filtergrades an die entsprechenden Einsatzbedingungen angepasst werden kann. Insbesondere bei Fördereinheiten mit im Spritzgussverfahren hergestellten Schwalltöpfen erlaubt diese Ausgestaltung das Austauschen der Segmente, während der Schwalltopf unverändert beibehalten werden kann. Das Austauschen der Segmente lässt sich beispielsweise durch entsprechende Einsätze in den Spritzgießwerkzeugen realisieren.A simple design of the form elements allows the arrangement in segments at the bottom of the swirl pot. Since the design of the form elements determines the degree of filtration, there is a further advantage in that the delivery unit can be adapted to the corresponding conditions of use solely by targeted selection of suitable segments with regard to the degree of filtration. In particular, in conveyor units with injection-molded baffles this embodiment allows the replacement of the segments, while the swirl pot can be maintained unchanged. The replacement of the segments can be realized for example by appropriate use in the injection molds.

In einer Weiterbildung der Erfindung wird das Anpassen an verschiedene Einsatzbedingungen erleichtert, wenn die Segmente lösbar mit dem Schwalltopf verbunden sind, vorzugsweise mittels Rast- oder Steckverbindungen. Eine lösbare Verbindung der Segmente am Schwalltopf erlaubt zudem ein Auswechseln der Segmente, insbesondere bei Verschleiß oder Zusetzen des Filters.In one embodiment of the invention, the adaptation to different conditions of use is facilitated if the segments are detachably connected to the swirl pot, preferably by means of locking or plug connections. A detachable connection of the segments on the swirl pot also allows a replacement of the segments, especially in case of wear or clogging of the filter.

Eine Schwächung des Filtergrades wird vermieden, wenn der Abstand zweiter benachbarter Segmente nicht größer als der Abstand der Formelemente untereinander ist.A weakening of the degree of filtering is avoided if the distance of second adjacent segments is not greater than the distance of the mold elements from each other.

Entsprechend der Anordnung der Formelemente in mehreren Reihen bezogen auf die Durchströmrichtung, können auf einem Segment die Formelemente in einer oder mehreren Reihen auf jeweils einem Segment oder auf mehrere Segmenten angeordnet sein, wobei die Segmente ebenfalls in Durchströmrichtung in mehreren Reihen angeordnet sind.According to the arrangement of the form elements in several rows with respect to the flow direction, the form elements can be arranged in one or more rows on one segment or on several segments on a segment, wherein the segments are also arranged in the flow direction in a plurality of rows.

Aufgrund des verbesserten Filtergrades muss der Filter nicht mehr ausschließlich am radial äußeren Ende des Schwalltopfbodens angeordnet sein. So erlaubt die Erfindung die Anordnung der Formelemente unmittelbar im Bereich der Einlassöffnung.Due to the improved degree of filtering, the filter no longer has to be arranged exclusively at the radially outer end of the surge pot bottom. Thus, the invention allows the arrangement of the mold elements directly in the region of the inlet opening.

Neben einer kreisförmigen Ausbildung kann der Filter auch sternförmig oder als Polygon ausgebildet sein.In addition to a circular design of the filter may also be formed star-shaped or polygon.

An mehreren Ausführungsbeispielen wird die Erfindung näher beschrieben. Es zeigen:

Fig. 1
einen Kraftstoffbehälter mit einer Fördereinheit,
Fig. 2
eine perspektivische Darstellung des Schwalltopfes der Fördereinheit nach Figur 1,
Fig. 3
eine zweite Ausführungsform eines Schwalltopfes in einer vergrößerten Darstellung.
In several embodiments, the invention will be described in more detail. Show it:
Fig. 1
a fuel tank with a conveyor unit,
Fig. 2
a perspective view of the surge pot of the conveyor unit according to FIG. 1 .
Fig. 3
a second embodiment of a swirl pot in an enlarged view.

Der in Figur dargestellte Kraftstoffbehälter 1 enthält eine Fördereinheit 2. Die Fördereinheit 2 wird eine Öffnung 3 des Kraftstoffbehälters 1 eingesetzt, wobei ein Flansch 4 die Öffnung 3 im Kraftstoffbehälter 1 verschließt. Die Fördereinheit 2 umfasst einen Schwalltopf 5 zur Aufnahme von Kraftstoff und eine darin angeordnete Kraftstoffpumpe 6, die den Kraftstoff zu einer nicht dargestellten Brennkraftmaschine des Kraftfahrzeugs fördert. Darüber hinaus ist es denkbar, den Schwalltopf 5 auch in einer Ansaugeinheit, bei der die Kraftstoffpumpe außerhalb des Schwalltopfes angeordnet ist, zu verwenden.The fuel tank 1 shown in FIG. 1 contains a delivery unit 2. The delivery unit 2 is fitted with an opening 3 of the fuel tank 1, a flange 4 closing the opening 3 in the fuel tank 1. The conveyor unit 2 comprises a surge pot 5 for receiving fuel and arranged therein a fuel pump 6, which promotes the fuel to an internal combustion engine, not shown, of the motor vehicle. In addition, it is conceivable to use the swirl pot 5 in a suction unit in which the fuel pump is arranged outside the swirl pot.

Am Boden 7 des Schwalltopfes 5 sind Aufstandselemente 8 angeformt, mit denen der Schalltopf 5 auf dem Tankboden 9 aufsitzt. Ebenfalls am Boden 7 des Schwalltopfes 5 ausgebildete Formelemente 10 sind derart in Abständen zueinander angeordnet, dass zwei benachbarte Formelemente 10 jeweils einen Spalt 11 einschließen. Eine geringere axiale Erstreckung der Formelemente 10 gegenüber den Aufstandselementen 8 bewirkt die Bildung von Bereichen 12 zwischen den Formelementen 10 und dem Tankboden 9, so dass Kraftstoff durch die Spalte 11 und die Bereiche 12 strömen kann. Die Spalte 11 und die Bereiche 12 sind dabei so klein gewählt, dass im Kraftstoff enthaltene Partikel durch die Formelemente 10 zurückgehalten werden.At the bottom 7 of the swirl pot 5 riot elements 8 are formed, with which the sound pot 5 is seated on the tank bottom 9. Also formed on the bottom 7 of the swirl pot 5 form elements 10 are arranged at intervals to each other so that two adjacent mold elements 10 each include a gap 11. A smaller axial extent of the mold elements 10 relative to the riot elements 8 causes the formation of regions 12 between the mold elements 10 and the tank bottom 9, so that fuel can flow through the gaps 11 and the regions 12. The column 11 and the regions 12 are chosen so small that contained in the fuel particles are retained by the mold elements 10.

Figur 2 zeigt die Draufsicht auf den Boden 7 des Schwalltopfes 5 aus Figur 1. Der Boden 7 besitzt eine Einlassöffnung 13, durch die Kraftstoff aus dem Kraftstoffbehälter 1 in den Schwalltopf 5 gelangt. Die Einlassöffnung 13 ist mit Abstandshaltern 14 versehen, welche die gleiche axiale Länge wie die Aufstandselemente 8 besitzen. Die Einlassöffnung 13 ist von Formelementen 10 umgeben, welche einteilig am Boden 7 des Schwalltopfes 5 angeformt sind. Aufgrund des Abstandes der Formelemente 10 untereinander sind zwischen diesen axiale verlaufende Spalte 11 ausgebildet. Die geringere axiale Erstreckung der Formelemente 10 gegenüber den Aufstandselementen 8 bewirkt zudem die Ausbildung von Bereichen 12 zwischen den Stirnflächen 16 der Formelemente 10 und dem Tankboden 9, wobei je ein Bereich 12 jeweils zwei der axial verlaufenden Spalte 11 verbindet. Der im Tank 1 befindliche Kraftstoff kann so durch die Spalte 11 und die Bereiche 12 zur Einlassöffnung 13 gelangen. Im Kraftstoff enthaltene Partikel werden von den Formelementen 10 von der Einlassöffnung 13 ferngehalten. Durch entsprechende Gestaltung der axialen Erstreckung der Formelemente 10 und der Aufstandselemente 8 lässt sich die axiale Höhe der Bereiche 12 und damit der Filtergrad gezielt einstellen. Zur Erhöhung des Filtergrades sind die Formelemente 8 in Durchströmrichtung hintereinander in zwei Reihen angeordnet, wobei auf einen Spalt 11 in der radial äußeren Reihe ein Formelement 8 in der radial inneren Reihe folgt und umgekehrt. FIG. 2 shows the top view of the bottom 7 of the swirl pot 5 FIG. 1 , The bottom 7 has an inlet opening 13, passes through the fuel from the fuel tank 1 into the swirl pot 5. The inlet opening 13 is provided with spacers 14, which have the same axial length as the riot elements 8. The inlet opening 13 is surrounded by mold elements 10, which are integrally formed on the bottom 7 of the swirl pot 5. Due to the distance between the form elements 10 with each other between these axially extending column 11 are formed. The smaller axial extension of the mold elements 10 with respect to the riot control elements 8 also causes the formation of areas 12 between the end faces 16 of the mold elements 10 and the tank bottom 9, wherein each area 12 each two of the axially extending column 11 connects. The fuel in the tank 1 can thus pass through the gaps 11 and the regions 12 to the inlet opening 13. Particles contained in the fuel are kept away from the inlet opening 13 by the mold elements 10. By appropriate design of the axial extent of the mold elements 10 and the riot elements 8, the axial height of the regions 12 and thus the filter degree can be adjusted specifically. To increase the degree of filtering, the mold elements 8 are arranged one behind the other in the flow direction in two rows, with a gap 11 in the radially outer row following a mold element 8 in the radially inner row and vice versa.

Figur 3 zeigt eine vergrößerte Darstellung der Einlassöffnung 13 im Boden 7 des Schwalltopfes 5. Die Formelemente 10 sind in vier Segmenten 15 um die Einlassöffnung 13 angeordnet. Die Segmente 15 können sowohl einstückig als auch lösbar mittels einer Rast- und Steckverbindung mit dem Schwalltopf 5 verbunden werden. Um die Filterwirkung nicht herabzusetzen, entsprechen die Abstände 16 der Segmente 15 im Wesentlichen den Breiten der Spalte 11. FIG. 3 shows an enlarged view of the inlet opening 13 in the bottom 7 of the swirl pot 5. The mold elements 10 are arranged in four segments 15 around the inlet opening 13. The segments 15 can be connected both integrally and releasably by means of a latching and plug connection with the swirl pot 5. In order not to reduce the filtering effect, the distances 16 of the segments 15 essentially correspond to the widths of the gaps 11.

Im Gegensatz zu Figur 2 sind die Formelemente 10 gemäß Figur 3 asymmetrisch angeordnet. Die zwischen zwei Formelementen 10 ausgebildeten Spalte 11a, 11b variieren in ihrer Länge und Breite. Die Formelemente 10 besitzen eine geringere axiale Erstreckung x als die Aufstandselemente 8 (y), die auf dem nicht dargestellten Tankboden aufsitzen. Aufgrund dieser Differenz in axialer Erstreckung bilden sich zwischen dem Tankboden 9 und den Stirnflächen 16 der Formelemente 10 Bereiche 12, durch die ebenso wie durch die Spalte 11 Kraftstoff zu der Einlassöffnung 13 strömt.In contrast to FIG. 2 are the mold elements 10 according to FIG. 3 arranged asymmetrically. The gaps 11a, 11b formed between two shaped elements 10 vary in their length and width. The mold elements 10 have a smaller axial extent x than the riot elements 8 (y), which rest on the bottom of the tank, not shown. Due to this difference in the axial extent form 10 areas between the tank bottom 9 and the end faces 16 of the mold elements 12, through which, as well as through the column 11, fuel flows to the inlet port 13.

Claims (12)

  1. Delivery unit (2), with a baffle (5), with a fuel pump (6) arranged therein and with a radial-onflow filter which is arranged on the bottom (7) of the baffle (5) and which is formed by shaped elements (10) projecting axially from the bottom (7) of the baffle (5), so that an axially running gap (11) is formed in each case between two adjacent shaped elements (10) in each case, and which surrounds an inlet port (13) arranged in the bottom (7) of the baffle (5), characterized in that at least one region (12) for throughflow is arranged perpendicularly to the gaps (11, 11a, 11b) and perpendicularly to the throughflow direction, in that the at least one region (12) connects at least two adjacent gaps (11, 11a, 11b) in axial extent, in that the regions (12) for throughflow are formed by at least one, preferably three, standing elements (8) arranged on the bottom (7) of the baffle (5) and having a greater axial length than the shaped elements (10), and in that the regions (12) for throughflow are formed by shaped elements (10) with different axial lengths.
  2. Delivery unit according to Claim 1, characterized in that the shaped elements (8) are arranged in a plurality of rows lying one behind the other in the throughflow direction.
  3. Delivery unit according to Claim 1, characterized in that the shaped elements (10) of equal axial length are arranged in a row.
  4. Delivery unit according to at least one of the preceding claims, characterized in that the shaped elements (10) of the radially outer row possess a smaller axial length than the shaped elements (8) of the radially inner rows.
  5. Delivery unit according to one of the preceding claims, characterized in that the axially running gaps (11, 11a, lib) between the shaped elements (10) possess different lengths and widths.
  6. Delivery unit according to one of the preceding claims, characterized in that the shaped elements (10) are arranged in segments (15) on the bottom (7) of the baffle (5).
  7. Delivery unit according to Claim 6, characterized in that the segments ( 15 ) are arranged releasably on the bottom (7) of the baffle (5).
  8. Delivery unit according to Claim 7, characterized in that the segments (15) are shaped in one piece on the baffle (5).
  9. Delivery unit according to one of Claims 6 to 8, characterized in that the distance between two adjacent segments (15) is no greater than the distance of the shaped elements (10) from one another.
  10. Delivery unit according to one of Claims 6 to 9, characterized in that the segments (15) are arranged in a plurality of rows in the throughflow direction.
  11. Delivery unit according to one of the preceding claims, characterized in that the shaped elements (10) are arranged circularly.
  12. Delivery unit according to one of the preceding Claims 1-11, characterized in that the shaped elements (10) are arranged in the form of a polygon.
EP05707867A 2004-03-03 2005-01-27 Delivery unit Expired - Fee Related EP1738068B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004010358A DE102004010358B3 (en) 2004-03-03 2004-03-03 delivery unit
PCT/EP2005/050349 WO2005085623A1 (en) 2004-03-03 2005-01-27 Delivery unit

Publications (2)

Publication Number Publication Date
EP1738068A1 EP1738068A1 (en) 2007-01-03
EP1738068B1 true EP1738068B1 (en) 2011-08-24

Family

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Family Applications (1)

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EP05707867A Expired - Fee Related EP1738068B1 (en) 2004-03-03 2005-01-27 Delivery unit

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US (1) US7350509B2 (en)
EP (1) EP1738068B1 (en)
JP (1) JP4523636B2 (en)
KR (1) KR101251719B1 (en)
CN (1) CN100472059C (en)
DE (1) DE102004010358B3 (en)
WO (1) WO2005085623A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006032101A1 (en) * 2006-07-11 2008-01-24 Siemens Ag Feed unit for conveying fuel
DE102006032099A1 (en) * 2006-07-11 2008-01-24 Siemens Ag Feed unit for conveying fuel
DE102008033057A1 (en) * 2008-07-14 2010-01-21 Continental Automotive Gmbh Fuel delivery device for a motor vehicle
KR101295912B1 (en) * 2010-12-30 2013-08-12 주식회사 코아비스 Reservoir for Fuel Tank
US8511283B2 (en) * 2011-01-14 2013-08-20 GM Global Technology Operations LLC Ice fence for diesel fuel suction tube
US8372278B1 (en) * 2012-03-21 2013-02-12 GM Global Technology Operations LLC Liquid fuel strainer assembly
CN103660920A (en) * 2013-11-21 2014-03-26 苏州先锋物流装备科技有限公司 Oil tank assembly
CN104653363B (en) * 2014-11-29 2017-09-26 华为技术有限公司 A kind of Large Copacity base oil tank
JP6380364B2 (en) * 2015-12-17 2018-08-29 株式会社デンソー Fuel pump and fuel pump module
DE102018208306A1 (en) * 2018-05-25 2019-11-28 Bayerische Motoren Werke Aktiengesellschaft Inlet structure for a storage pot

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5452701A (en) * 1994-05-23 1995-09-26 Walbro Corporation Turbine fuel pump with fuel jet
DE19521509A1 (en) 1995-06-13 1996-12-19 Bosch Gmbh Robert Device for delivering fuel from a storage tank to an internal combustion engine
FR2779184B1 (en) * 1998-05-26 2001-01-26 Marwal Systems FUEL PUMP ASSEMBLY IN A MOTOR VEHICLE TANK
JP3802682B2 (en) 1998-06-17 2006-07-26 株式会社ニフコ Fuel filter
DE19834653C1 (en) * 1998-07-31 1999-12-16 Bosch Gmbh Robert Modular fuel supply system for IC engines in motor vehicles
DE19915255B4 (en) 1999-04-03 2004-04-08 Robert Bosch Gmbh Conveying device for fuel
US6155793A (en) * 1999-06-08 2000-12-05 Walbro Corporation Recessed fuel pump module
US6555000B2 (en) * 1999-12-03 2003-04-29 Parker-Hannifin Corporation Fuel filter with bypass valve
US6260543B1 (en) * 2000-05-19 2001-07-17 Visteon Global Technologies, Inc. Fuel delivery module with integrated filter
US6739844B1 (en) * 2000-06-09 2004-05-25 Visteon Global Technologies, Inc. Fuel pump with contamination reducing flow passages
WO2002014677A1 (en) * 2000-08-14 2002-02-21 Stanadyne Automotive Corp. Fuel tank mounted, motorized high pressure gasoline pump
US6613227B2 (en) * 2002-01-11 2003-09-02 Kuss Corporation Electrically conductive in-tank fuel filter

Also Published As

Publication number Publication date
EP1738068A1 (en) 2007-01-03
JP2007525617A (en) 2007-09-06
CN100472059C (en) 2009-03-25
JP4523636B2 (en) 2010-08-11
DE102004010358B3 (en) 2005-12-22
CN1926322A (en) 2007-03-07
US7350509B2 (en) 2008-04-01
KR20060135840A (en) 2006-12-29
WO2005085623A1 (en) 2005-09-15
KR101251719B1 (en) 2013-04-05
US20070215537A1 (en) 2007-09-20

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