EP2007988A1 - Pompe a jet aspirant - Google Patents

Pompe a jet aspirant

Info

Publication number
EP2007988A1
EP2007988A1 EP07727317A EP07727317A EP2007988A1 EP 2007988 A1 EP2007988 A1 EP 2007988A1 EP 07727317 A EP07727317 A EP 07727317A EP 07727317 A EP07727317 A EP 07727317A EP 2007988 A1 EP2007988 A1 EP 2007988A1
Authority
EP
European Patent Office
Prior art keywords
suction
jet pump
suction jet
point
mixing tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07727317A
Other languages
German (de)
English (en)
Inventor
Klemens Kieninger
Ralph SCHRÖDER
Michael Tittmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Continental Automotive GmbH
Original Assignee
Siemens AG
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 Siemens AG, Continental Automotive GmbH filed Critical Siemens AG
Publication of EP2007988A1 publication Critical patent/EP2007988A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
    • F04F5/46—Arrangements of nozzles
    • F04F5/467—Arrangements of nozzles with a plurality of nozzles arranged in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
    • F04F5/46—Arrangements of nozzles
    • F04F5/463—Arrangements of nozzles with provisions for mixing

Definitions

  • the invention relates to a suction jet pump, comprising a housing with a connection of a propellant conduit, a propulsion jet nozzle, an adjoining mixing tube and a suction point arranged upstream of the mixing tube.
  • suction jet pumps find use in fuel tanks of motor vehicles in order to convey fuel from different areas of the fuel tank to a fuel pump arranged in the fuel tank.
  • Suction jet pumps of the type mentioned above are used in multi-chamber tank systems in which the fuel tank has at least two chambers, in order to be able to empty all chambers as best as possible, especially at a low level in the fuel tank.
  • the first type sucks fuel more or less directly through a suction point.
  • the suction jet pump is arranged at the point from which the fuel is conveyed.
  • the second type of suction jet pump are sucking suction jet pumps whose suction point is connected to a suction line.
  • the suction line is led into the area from which the fuel is to be conveyed.
  • this type of suction jet pump has the advantage of being independent of the location of which the
  • Fuel should be promoted.
  • a disadvantage of both types of ejector pumps is that with a large number of chambers to be emptied, as many ejector pumps are necessary. Despite their relatively simple construction, they require a certain amount of parts and a considerable amount of assembly work.
  • the invention is based on the problem to reduce the cost of emptying a fuel tank with several chambers or areas to be emptied.
  • the object is achieved in that the suction jet pump has a second suction point.
  • Fuel delivery system since due to the unused drive jet for the second intake less hydraulic power must be provided by the fuel pump to drive the ejector.
  • the saved hydraulic see line can either as additional flow of the
  • the fuel pump can be made smaller. Especially with small flow rates, the suction jet pump with passive secondary suction is particularly effective.
  • the second suction point can be formed in a particularly simple manner when the suction point opens into the mixing tube of the suction jet pump.
  • the arrangement of the second suction point is structurally relatively simple on the suction jet pump, in particular on the mixing tube, if it has a smaller cross section than the first suction point.
  • the second suction point can be smaller in cross-section up to a factor of 100.
  • the installation of a suction at the second suction can be carried out with little effort when the second suction point opens into a diffuser of the mixing tube, wherein the diffuser is disposed on the side facing away from the jet nozzle jet of the mixing tube.
  • the arrangement of the second suction may prove to be difficult. It has therefore proved to be advantageous to allow the second suction point in a section located upstream of the diffuser, preferably a cylindrical section, of the mixing tube. This section has a sufficient axial length, which allows the arrangement of the second suction easily.
  • the second suction point relative to the axial extent of the suction jet pump in the region of the first suction point, preferably in the housing of the suction jet pump is arranged.
  • the mixing tube remains unchanged, so that previous mixing tube shapes can be used.
  • suction jet pumps which are mounted on the mixing tube in which it z. B. is inserted with the mixing tube in a swirl pot, can be mounted unchanged. The second intake point thus has no effect on the assembly of the suction jet pump.
  • the second suction point is arranged at the periphery of the suction jet pump with respect to the first suction point at an angle of 20 ° to 180 °, preferably between 90 ° and 180 °.
  • the suction jet pump can be easily adapted to the geometric installation conditions.
  • a small angle is advantageous if the areas from which the suction jet pump is to suck fuel in a direction to the suction jet pump, or both suction lines must be laid in one direction due to the space in the fuel tank.
  • a good mold release and thus easy-to-design tools are achieved with a suction jet pump produced by injection molding, when the second suction point is arranged in its axial extent perpendicular to the axial extent of the suction jet pump.
  • a reduction of the installation space in the radial extent is achieved in another embodiment with an ejector pump, in which the second suction point in its axial
  • Extension is arranged in a deviating from the perpendicular angle to the axial extent of the suction jet pump.
  • the second suction point can be produced particularly cost-effectively, if it is formed integrally with the suction jet pump.
  • a housing designed in this way, or an ejector pump can be produced particularly cost-effectively owing to the good demoldability.
  • the second suction point is designed as a connecting piece, to which a line designed as an intake line can be connected.
  • the second suction point is formed as a bore into which a line designed as a suction line can be inserted.
  • connection of the blowing agent line is arranged radially or axially to the axial extent of the suction jet pump.
  • suction jet pumps with a radial connection of the blowing agent line an embodiment of the suction jet pump has proven to be advantageous, in which the second suction point has the same radial orientation as the connection. For one thing requires such
  • Suction jet pump in radial extent less space.
  • such a suction jet pump can be produced inexpensively by means of injection molding, the tools being particularly simple in design as a result of the same radial alignment of the connection and the second suction point and the associated joint removal direction.
  • FIG. 1 shows the arrangement of a suction jet pump in a fuel tank
  • FIG. 3-6 further embodiments of the suction jet pump of Figure 2.
  • the fuel tank 1 shown in Figure 1 consists of two chambers 2, 3, which are connected to each other via a saddle 4.
  • a Forderica 5 is arranged, which is mounted on a closed with a flange 6 opening 7 in the fuel tank 1.
  • the Ford unit 5 consists of a swirl pot 8, in which a fuel pump 9 is arranged. From the fuel pump 9 from the swirl pot 8 via a pump pre-filter 10 sucked fuel is required via a feed line 11 through the flange 6 to an internal combustion engine, not shown.
  • a suction jet pump 12 is arranged in the bottom region, which sucks fuel through a first suction point 13 from the fuel tank 1 and calls into the swirl pot 8.
  • the suction jet pump 12 is driven by a propellant conduit 14 with fuel required by the fuel pump 9. While in the illustration shown, the fuel line 14 branches off from the flow line 11, it is also conceivable to feed the fuel line 14 directly from the pumping stage of the fuel pump 9.
  • this has a second suction point 16, which with a Suction line 17 is connected.
  • the suction line 17 is guided into the bottom area of the chamber 3, so that during operation of the suction jet pump 12 fuel from the chamber 3 is required in the swirl pot 8.
  • FIG. 2 shows the suction jet pump 12 from FIG. 1.
  • the suction jet pump 12 has a common housing 18, which connects the individual regions of the suction jet pump 12 to one another in a one-piece construction.
  • amaschinestrahlduse 19 is arranged with a Duseno réelle 20, which is aligned axially to the mixing tube 15.
  • the mixing tube 15 consists of an inlet region 21, a cylindrical section 22, to which a diffuser 23 adjoins downstream.
  • a first suction point 13 is arranged as Primaransaugung. The first suction point 13 is aligned in the illustrated horizontal mounting position of the suction jet pump 12 vertically downwards.
  • Themaschinestrahlduse 19 is integrally connected to a connection piece 24 which is provided at its Kochduse 19 remote from the end with a Christmas tree profile, for connecting the propellant conduit 14, not shown.
  • the connecting piece 24 is arranged perpendicular to the axial extent of the suction jet pump 12 and with respect to the first suction point 13 at an angle of 180 ° at the periphery of the suction jet pump 12.
  • one of the Duseno réelle 20 opposite, production-related opening by means of a pressed ball 25 is closed.
  • the cylindrical portion 22 has a nozzle 26 which is arranged in the same manner as the connecting piece 24 perpendicular to the axial extent of the suction jet pump 12 and with respect to the first suction point 13 at an angle of 180 ° at the periphery of the suction jet pump 12.
  • the suction line 17, not shown is connected, whereby the nozzle 26, the second suction point 16 forms.
  • Arrangement of the suction line 17 to the nozzle 26 may be formed analogous to the connecting piece 24 with a Christmas tree profile.
  • Fuel tank is sucked and conveyed into the swirl pot.
  • the suction jet pump 12 in FIG. 3 differs from the construction with respect to the suction jet pump in FIG. 2 in that the connecting piece 24 is arranged coaxially to the horizontal extension of the suction jet pump 12.
  • the nozzle 26 of the second suction point 16 is arranged relative to the axial extension in the region of the first suction point 13.
  • the nozzle 26 is in turn arranged perpendicular to the axial extent of the suction jet pump 12 and with respect to the first suction point 13 at an angle of 180 ° at the periphery of the suction jet pump 12.
  • FIG. 4 shows a suction jet pump 12 as a section in a plan view, the basic construction essentially corresponding to the suction jet pump according to FIG.
  • the suction jet pump 12 has a horizontal connecting piece 24, which merges into the housing 18.
  • the first suction point 13 is in turn located on the underside of the suction jet pump 12, so that it is covered by the propulsion jet nozzle 19.
  • the nozzle 26 is the second intake point 16 relative to the first suction point 13 at an angle of 90 ° on the circumference of the suction jet pump 12 and thus arranged in the plane of the drawing.
  • the suction jet pump 12 thus has a particularly low overall height in the vertical direction.
  • the nozzle 26 is arranged with respect to the axial extent of the suction jet pump 12 in a deviating from the vertical angle, wherein the angle ⁇ between the axial extent of the suction jet pump 12 and the axial extent of the nozzle 26 is 55 °.
  • FIG. 5 shows a suction jet pump 12 with a basic structure according to FIG. 3.
  • the second suction point 16 is arranged in the region of the diffuser 23 and designed as a bore 27, in which the suction line (not shown) is fastened by means of insertion.
  • the suction jet pump 12 in Figure 6 shows a further embodiment of the suction jet pump according to Figure 5.
  • the diffuser 23 has a nozzle 26 as a second suction point 16, wherein the diffuser 23 is designed as a separate component.
  • the diffuser 23 On its side facing the mixing tube 15, the diffuser 23 has at its inner diameter a radially encircling groove. This cooperates with a radially on the outer diameter of the mixing tube 15 circumferential bead 28.
  • the Klips- connection thus formed allows the attachment of the diffuser 23 to the mixing tube 15.
  • the radially circumferential formation of groove and bead 28 allows the radial alignment of the nozzle 26 at an arbitrary angle perpendicular to the axial extent of the suction jet 12th

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

L'invention concerne une pompe à jet aspirant (12) constituée d'un boîtier (18) avec un raccord (24), d'une conduite d'agent propulseur (14), d'une buse de jet propulseur (19), d'un tube mélangeur (15) s'y raccordant et d'un point d'aspiration (13) disposé en amont du tube mélangeur (15). En outre, la pompe à jet aspirant (12) présente (10) un deuxième point d'aspiration (16).
EP07727317A 2006-04-07 2007-03-26 Pompe a jet aspirant Withdrawn EP2007988A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006016515A DE102006016515A1 (de) 2006-04-07 2006-04-07 Saugstrahlpumpe
PCT/EP2007/052844 WO2007115925A1 (fr) 2006-04-07 2007-03-26 Pompe a jet aspirant

Publications (1)

Publication Number Publication Date
EP2007988A1 true EP2007988A1 (fr) 2008-12-31

Family

ID=38104218

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07727317A Withdrawn EP2007988A1 (fr) 2006-04-07 2007-03-26 Pompe a jet aspirant

Country Status (4)

Country Link
US (1) US20090290994A1 (fr)
EP (1) EP2007988A1 (fr)
DE (1) DE102006016515A1 (fr)
WO (1) WO2007115925A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2935289B1 (fr) * 2008-09-01 2013-02-22 Inergy Automotive Systems Res Procede pour la fabrication d'un reservoir a carburant en matiere plastique plastique muni d'une pompe.
US8459960B2 (en) * 2009-02-09 2013-06-11 Robert Bosch Gmbh Jet pump assembly
US8726886B2 (en) * 2011-08-24 2014-05-20 Robert Bosch Gmbh Fuel supply system and anti-siphon jet pump
JP6287749B2 (ja) * 2014-10-13 2018-03-07 株式会社デンソー ジェットポンプ及びその製造方法、並びに燃料供給装置
FR3038667B1 (fr) * 2015-07-10 2017-08-11 Aisan Ind France Sa Pompe a jet, module jauge-pompe equipe d'une telle pompe a jet, et procede de fabrication associe
DE102016212858B4 (de) 2016-07-14 2018-02-08 Continental Automotive Gmbh Saugstrahlpumpe
DE102016217800B4 (de) * 2016-09-16 2021-12-23 Vitesco Technologies GmbH Fluidfördervorrichtung
DE112019005806B4 (de) * 2018-11-20 2024-01-25 Walbro Llc Kraftstoffpumpenanordnung mit elektrischer Motorkraftstoffpumpe und fluidgetriebener Kraftstoffpumpe
JP2020094512A (ja) * 2018-12-11 2020-06-18 富士電機株式会社 エジェクタ
KR20230011653A (ko) * 2021-07-14 2023-01-25 현대자동차주식회사 차량의 듀얼 퍼지 시스템

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US86030A (en) * 1869-01-19 Alexander morton
US1784222A (en) * 1928-05-05 1930-12-09 Tridex Corp Suction atomizer
DE855656C (de) * 1941-04-13 1952-11-13 Johann Hans Siebenhuener Heinl Verfahren und Vorrichtung zum Foerdern von heissen Fluessigkeiten
DE3838798A1 (de) * 1988-11-17 1990-05-23 Ingelheim Peter Graf Von Injektor zur kombinierten nutzung
DE4238040A1 (de) * 1992-11-11 1994-05-19 Vdo Schindling Saugstrahlpumpe zum Fördern von Kraftstoff
DE4301762C2 (de) * 1993-01-23 1995-05-04 Daimler Benz Ag Tanksystem
US5478209A (en) * 1994-07-11 1995-12-26 Pcf Group, Inc. Jet barrel and hose fitting insert for a jet pump
DE4432968C2 (de) * 1994-09-16 2000-05-25 Mannesmann Vdo Ag Kraftstoff-Fördereinrichtung
US5927338A (en) * 1996-04-18 1999-07-27 S.C. Johnson Commercial Markets, Inc. Mixing eductor
DE19651652A1 (de) * 1996-12-12 1998-06-18 Bosch Gmbh Robert Kraftstoffbehälter
DE19830504B4 (de) * 1998-07-08 2005-12-22 Siemens Ag Für den Einsatz in einem Kraftstoffbehälter eines Kraftfahrzeuges vorgesehener Schwalltopf
DE19835157C1 (de) * 1998-08-04 2000-03-02 Daimler Chrysler Ag Saugstrahlpumpe
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Non-Patent Citations (1)

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Title
See references of WO2007115925A1 *

Also Published As

Publication number Publication date
US20090290994A1 (en) 2009-11-26
WO2007115925A1 (fr) 2007-10-18
DE102006016515A1 (de) 2007-10-11

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Owner name: CONTINENTAL AUTOMOTIVE GMBH

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Inventor name: TITTMANN, MICHAEL

Inventor name: SCHROEDER, RALPH

Inventor name: KIENINGER, KLEMENS

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