EP1527269B1 - Pompe a jet aspirant - Google Patents

Pompe a jet aspirant Download PDF

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Publication number
EP1527269B1
EP1527269B1 EP20030792114 EP03792114A EP1527269B1 EP 1527269 B1 EP1527269 B1 EP 1527269B1 EP 20030792114 EP20030792114 EP 20030792114 EP 03792114 A EP03792114 A EP 03792114A EP 1527269 B1 EP1527269 B1 EP 1527269B1
Authority
EP
European Patent Office
Prior art keywords
jet pump
pot
suction jet
suction
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.)
Expired - Lifetime
Application number
EP20030792114
Other languages
German (de)
English (en)
Other versions
EP1527269A1 (fr
Inventor
Michael Teichert
Klemens Kieninger
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 EP1527269A1 publication Critical patent/EP1527269A1/fr
Application granted granted Critical
Publication of EP1527269B1 publication Critical patent/EP1527269B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04F5/02—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid
    • 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
    • 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
    • F02M37/02—Feeding by means of suction apparatus, e.g. by air flow through carburettors
    • 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
    • F02M37/02—Feeding by means of suction apparatus, e.g. by air flow through carburettors
    • F02M37/025—Feeding by means of a liquid fuel-driven jet pump
    • 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
    • F02M37/106—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir the pump being installed in a sub-tank
    • 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
    • F04F5/02—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid
    • F04F5/10—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid displacing liquids, e.g. containing solids, or liquids and elastic fluids
    • 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
    • F04F5/54—Installations characterised by use of jet pumps, e.g. combinations of two or more jet pumps of different type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/85978—With pump
    • Y10T137/86075—And jet-aspiration type pump

Definitions

  • the invention relates to a suction jet pump with a propulsion jet nozzle, a mixing tube, a suction port and a suction line connected thereto.
  • the suction jet pump serves to convey fuel within a fuel tank or from a fuel tank in a surge pot disposed within the fuel tank.
  • suction jet pumps are used to supply the fuel present in other areas of the fuel tank to the delivery unit or to deliver the fuel at least into the chamber or the area in which the delivery unit is located.
  • a suction jet pump is for example from the DE 37 32 415 A1 known, which discloses all the features of the preamble of claim 1.
  • suction jet pumps are arranged at the bottom of the chambers or the areas of the fuel tank, from which the fuel is to be conveyed to the delivery unit.
  • suction jet pump With the arrangement of the suction of the suction jet pump at the bottom of the fuel tank, the suction jet pump is always in the fuel and is therefore always ready for use. Such suction jet pumps pay off by a good Efficiency.
  • the funding factor that is, the ratio of sum beam to propellant jet, is at least 7.
  • the disadvantage here is that with the fuel line to the suction jet pump and the sum of the suction jet pump line two lines are required, which must be installed and fixed in the fuel tank.
  • suction suction jet pumps which are arranged in the region of the conveyor unit. From the suction jet pump leads a suction line in the area from which the fuel is to be conveyed. To generate the necessary negative pressure in the suction line, the suction jet pump has a special jet nozzle.
  • the outlet opening of the propulsion jet nozzle is designed as a slot.
  • the propulsion jet is fanned out after emerging from the propulsion jet nozzle.
  • the fanned out propulsion jet closes the mixing tube, whereby the necessary negative pressure is generated in order to be able to suck in the fuel via the relatively long intake line.
  • a disadvantage of this embodiment is the low delivery factor of the suction suction jet pump, which is approximately at 2. This low conveying factor is due to the fanning of the propulsion jet after leaving themaschinedüse.
  • the present invention is therefore based on the object to provide a suction suction jet pump with an improved delivery factor.
  • the suction jet pump should also be simple and compact and easy to assemble.
  • the suction jet pump consists of a propulsion jet nozzle, a mixing tube and one with a suction line connected suction port, wherein at least a part of the mixing tube is arranged in a pot. Due to the pumping medium in the pot, the mixing tube is sealed against the environment. With the sealing of the mixing tube, a negative pressure forms in the suction jet pump, which allows the suction of the medium to be conveyed over a long distance.
  • the advantage of the invention is that with the suction line only one line in the fuel tank is arranged and that the suction jet pump has a delivery factor as conventional Saugstrahlpumpen.
  • the suction jet pump is no longer limited in its arrangement due to the high suction on the bottom region of the fuel tank or the swirl pot.
  • the suction jet pump is advantageously arranged with respect to its axial extent in a deviating from the horizontal angle.
  • the choice of angle can be made depending on the available space in the fuel tank.
  • the vertical arrangement of the suction jet pump has proven, in which the suction jet pump in relation to its axial extent at an angle to the horizontal of 90 °.
  • This vertical arrangement of the suction jet pump is particularly space-saving. This position enables the arrangement of the suction jet pump on or in the swirl pot of a delivery unit located in the fuel tank. In this way, a separate attachment of the ejector on the fuel tank can be omitted.
  • the suction jet pump can be pre-assembled with the delivery unit, tested and attached in one step in the fuel tank.
  • only the outlet opening of the mixing tube is in the pot. This allows a very shallow and thus relatively small design of the pot.
  • the pot is connected in a further embodiment with the suction jet pump.
  • the pot can be made in one piece with the suction jet pump, preferably on the mixing tube, be formed.
  • the production of the suction jet pump according to the invention is particularly simple if the pot is connected by means of a latching or plug connection with the suction jet pump. In this way, the pot forms a unit with the suction jet pump.
  • the suction jet pump can thereby be used at any location.
  • pot and suction jet pump designed advantageous if both the suction jet pump and the pot latching or plug-in elements, which engage with each other, are present.
  • the pot and the suction jet pump can be connected in a particularly simple manner if the pot has a groove into which a spring formed on the mixing tube engages.
  • the suction jet pump can convey over the upper edge into the baffle, wherein it is advantageously arranged in the region of the upper edge.
  • the previously provided suction in the bottom of the swirl pot is no longer necessary. This also eliminates the valve which closes the opening caused by the suction jet pump when the suction jet pump is not in operation.
  • the device according to the invention is particularly simple if the pot is formed by another component or integrated in this component.
  • the pot can be arranged on the swirl pot.
  • the pot is here either formed on the swirl pot or it is attached to the swirl pot.
  • the swirl pot used in this case is particularly simple, if a part of the soil is divided, so that this divided area forms the pot.
  • the swirl pot can have on its outer wall an Anformung, which forms the pot for the suction jet pump.
  • the advantage of these embodiments is that only the suction jet pump must be mounted.
  • Fig. 1 is a two chambers 2, 3 existing fuel tank 1 is shown.
  • a delivery unit 4 consisting of a swirl pot 5 and a fuel pump 6 arranged therein, fixed. Via a feed line 7, the funded by the fuel pump 6 fuel is passed to an internal combustion engine, not shown.
  • a pot 8 is attached on the outer wall of the swirl pot 5, a pot 8 is attached.
  • a suction jet pump 9 is arranged to the pot 8, that the mixing tube 10 projects into the pot.
  • fuel is supplied to the suction jet pump 9 from the fuel pump 6.
  • a further line 12 extends from the suction jet pump 9 in the other chamber 2. Via the line 12 fuel is conveyed from the chamber 2 into the chamber 3 or directly into the swirl pot 5.
  • the in the FIGS. 2a-c shown suction jet pump 9 consists of a propulsion jet nozzle 13, a mixing tube 14, the suction pipe 12 and a pot 8.
  • a propellant jet 15 of the suction jet pump 9 is supplied.
  • the propulsion jet 15 exits through the propulsion jet nozzle 13 and into the mixing tube 14.
  • the intake line 12 opens into the suction jet pump 9.
  • the suction jet pump 9 is arranged vertically with respect to the axial extent of the mixing tube 14. Farther the suction jet pump 9 is arranged to the pot 8, that the outlet opening 16 of the mixing tube 14 is immersed in the pot 8. In the in Fig. 2a shown state, the pot 8 is only slightly filled with fuel.
  • the propulsion jet 15 passes from the propulsion jet nozzle 13 via the mixing tube 14 into the pot 8, whereby the propulsion jet 15 fills the pot 8.
  • the generated negative pressure in the suction jet pump 9 is not sufficient to promote a larger amount of fuel from the chamber 2 via the suction line 12.
  • suction jet pump 9 is connected to the pot 8 via a plug connection.
  • a spring 17 is formed, while the inner wall of the pot 8 has a groove 18 at one point.
  • the suction jet pump 9 is positioned to the pot 8.
  • the suction jet pump 9 is arranged eccentrically to the pot 8. In this way, a preferred outflow direction of the fuel is generated from the pot 8, which, relative to the circumference of the pot 8, the suction jet pump 9 is opposite.
  • Fig. 4 shows a further embodiment of the attachments of the suction jet pump 9 on the pot 8.
  • latching elements in the form of latching hooks 21 are formed in the region of the outlet opening, which cooperate with correspondingly formed latching points 22 which are integrally formed on the pot 8. It is also conceivable to provide the latching hook 21 on the pot 8, while the mixing tube 14 have the necessary resting points 22.
  • the suction jet pump 9 is arranged at an angle of 40 ° to the horizontal with respect to the axial extent of the mixing tube 14.
  • the mixing tube 14 is set. Through the bore 23, the mixing tube 14 is held in position.
  • the diameters of the mixing tube 14 and the bore 23 are formed as a press fit. As a result, the mixing tube 14 is reliably held in position.
  • the bottom of the pot 8 forms the stop for the mixing tube 14 during assembly.
  • the pot 8 is not a separate component, but part of the swirl pot 5 of the conveyor unit 4.
  • a wall 24 is formed, which forms the pot 8 together with the wall 25 of the swirl pot 5.
  • the mixing tube 14 protrudes with its outlet opening 16 into the pot 8.
  • the subsidized by the ejector 9 fuel flows from the pot 8 directly into the swirl pot 5. From there, the fuel is conveyed from the fuel pump, not shown, to the engine.
  • Fig. 7 shows a modified form of the arrangement of the ejector after Fig. 6
  • the pot 8 is at the top of the Schwall pot 5 attached.
  • the pot 8 can be arranged both inside and outside of the swirl pot 5.
  • the suction jet pump 9 is secured in a suitable manner in the pot 8.
  • the strength of the propellant conduit 11 is achieved by the material of the propellant conduit 11 or by reinforcing elements, for example wire insert.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)

Abstract

L'invention concerne une pompe à jet aspirant (9) comprenant un éjecteur à propulsion (13), un tuyau mélangeur (14), une ouverture d'aspiration ainsi qu'une conduite d'aspiration (12) qui est reliée à ladite ouverture d'aspiration. Selon l'invention, au moins une partie du tuyau mélangeur (14) est disposée dans un pot (8). Ladite pompe à jet aspirant (9) sert à transporter du carburant au sein d'un réservoir de carburant (1) ou d'un réservoir de carburant (1) vers un pot de turbulence (5) qui est disposé dans le réservoir de carburant (1).

Claims (10)

  1. Pompe aspirante à jet, constituée d'une buse (13) à jet moteur, ayant une ouverture circulaire, d'un tube (14) de mélange, d'une ouverture d'aspiration et d'un conduit d'aspiration qui y est monté, caractérisée en ce qu'au moins une partie du tube (14) de mélange est disposée dans un pot (8), qui est placé sur un pot (5) d'onde positive.
  2. Pompe aspirante à jet suivant la revendication 1, caractérisée en ce que l'ouverture (16) de sortie du tube (14) de mélange est disposée à l'intérieur du pot (8).
  3. Pompe aspirante à jet suivant les revendications 1 et 2, caractérisée en ce que le tube (14) de mélange est disposé suivant un angle s'écartant de l'horizontal par rapport à son étendue axiale.
  4. Pompe aspirante à jet suivant la revendication 3, caractérisée en ce que le tube (14) de mélange est disposé perpendiculairement à son étendue axiale.
  5. Pompe aspirante à jet suivant la revendication 3, caractérisée en ce que le tube (14) de mélange est disposé suivant un angle compris en 5° et 85°, de préférence compris entre 20° et 70°, par rapport à son étendue axiale.
  6. Pompe aspirante à jet suivant au moins l'une des revendications précédentes, caractérisée en ce que le pot (8) est relié à la pompe (9) aspirante à jet.
  7. Pompe aspirante à jet suivant la revendication 6, caractérisée en ce que le pot (8) est relié à la pompe (9) aspirante à jet au moyen d'une liaison par encliquetage ou par enfichage.
  8. Pompe aspirante à jet suivant la revendication 6, caractérisée en ce que le pot (8) est formé sur la pompe (9) aspirante à jet.
  9. Pompe aspirante à jet suivant la revendication 8, caractérisée en ce que le pot (8) est soudé ou collé à la pompe (9) aspirante à jet.
  10. Pompe aspirante à jet suivant au moins l'une des revendications précédentes, caractérisée en ce que le pot (8) est constitué sur le pot (5) à onde positive ou dans une zone du pot (5) à onde positive.
EP20030792114 2002-08-09 2003-06-30 Pompe a jet aspirant Expired - Lifetime EP1527269B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2002137050 DE10237050B3 (de) 2002-08-09 2002-08-09 Saugstrahlpumpe
DE10237050 2002-08-09
PCT/DE2003/002166 WO2004018864A1 (fr) 2002-08-09 2003-06-30 Pompe a jet aspirant

Publications (2)

Publication Number Publication Date
EP1527269A1 EP1527269A1 (fr) 2005-05-04
EP1527269B1 true EP1527269B1 (fr) 2012-04-25

Family

ID=31895547

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030792114 Expired - Lifetime EP1527269B1 (fr) 2002-08-09 2003-06-30 Pompe a jet aspirant

Country Status (8)

Country Link
US (1) US7874811B2 (fr)
EP (1) EP1527269B1 (fr)
JP (1) JP2005535830A (fr)
KR (1) KR20050040916A (fr)
CN (1) CN100467852C (fr)
BR (1) BR0313472A (fr)
DE (1) DE10237050B3 (fr)
WO (1) WO2004018864A1 (fr)

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Also Published As

Publication number Publication date
US20050241621A1 (en) 2005-11-03
CN100467852C (zh) 2009-03-11
US7874811B2 (en) 2011-01-25
BR0313472A (pt) 2005-06-21
EP1527269A1 (fr) 2005-05-04
WO2004018864A1 (fr) 2004-03-04
KR20050040916A (ko) 2005-05-03
CN1675462A (zh) 2005-09-28
DE10237050B3 (de) 2004-04-15
JP2005535830A (ja) 2005-11-24

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