EP2964961A1 - Saugstrahlpumpe - Google Patents
SaugstrahlpumpeInfo
- Publication number
- EP2964961A1 EP2964961A1 EP14708245.7A EP14708245A EP2964961A1 EP 2964961 A1 EP2964961 A1 EP 2964961A1 EP 14708245 A EP14708245 A EP 14708245A EP 2964961 A1 EP2964961 A1 EP 2964961A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- diffuser
- jet pump
- mixing tube
- suction jet
- course
- 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.)
- Granted
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
- F04F5/464—Arrangements of nozzles with inversion of the direction of flow
-
- 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
- F04F5/02—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
- F04F5/14—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
-
- 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
- F04F5/14—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
- F04F5/24—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing liquids, e.g. containing solids, or liquids and elastic fluids
Definitions
- Suction jet pump object of the invention is a suction jet pump with a
- Propellant line amaschinestrahldüse, a suction area, a mixing tube and a diffuser, wherein the propulsion jet nozzle and the mixing tube are aligned with each other in a straight line.
- ejector pumps are known and used for conveying liquids and gases, their main advantage being that they do not require an electromotive drive but are driven by a propellant supplied via the propellant conduit. For this reason, they are used in automobiles for conveying fuel in the fuel tank by being used for redistributing the fuel in the fuel tank or filling flow unit swirl pots.
- the suction jet pumps are usually driven by a fuel pump by a part of the flow rate of the fuel pump is diverted and used to drive the ejector.
- the disadvantage of ejector pumps is their relatively low efficiency.
- the dimensioning of the individual components of the suction jet pump is of particular importance in order to achieve as much as possible delivery capacity.
- the length of the individual components is crucial.
- the nozzle cross-section is increased.
- the use of demand-controlled fuel pump has the disadvantage that in driving situations with low fuel consumption, the diverted for the ejector jet flow rate is close to zero, which adversely affects the Efficiency of the suction jet pump effects.
- the shortened lengths of the parts of the suction jet pump can not be compensated by an increased amount of fuel in demand-controlled fuel pumps.
- the invention has for its object to provide a suction jet pump with high efficiency, which is also used in the drive by means of a demand-controlled fuel pump with limited space.
- the object is achieved in that, as seen in the flow direction, the diffuser has a course deviating from the course of the mixing tube.
- the suction jet pump according to the invention has amaschinestrahldüse and a mixing tube, which are aligned in a straight line to each other.
- the diffuser arranged downstream of the mixing tube has a course deviating from the rectilinear course of the mixing tube. Due to his from
- this adjustment allows the suction jet pump to be a limited space the drive through a demand-controlled fuel pump, because due to the unnecessary length reduction of individual components of the suction jet pump no enlargement of the nozzle cross-section is necessary, especially in driving situations with low fuel consumption ne negative on the Efficiency of the suction jet pump would affect
- a slight influence on the flow is achieved with a diffuser having a curved course.
- the suction jet pump can be optimally adapted to the available installation space, since the curvature of the diffuser can take place in all directions.
- the impairment of the efficiency is kept within narrow limits. Often even small bends are sufficient to better exploit the available space.
- the curvature may extend over the entire length of the diffuser or only over part of the length, depending on the conditions of use.
- a particularly small effect on the efficiency is achieved with a suction jet pump, in which a deflecting element is arranged between the mixing tube and diffuser.
- This embodiment has the advantage that the mixing tube has its optimum length for the efficiency.
- the adaptation of the suction jet pump to the available installation space thus takes place essentially via the deflection element.
- the deflection of a few degrees, over 90 ° and beyond can take place.
- a particularly small overall length of the suction jet pump is achieved with a deflecting element whose deflection is 180 °, so that the two ends of the deflecting element are aligned parallel to one another.
- such a suction jet pump requires a significantly shorter propellant line than a suction jet pump, in which the 180 "deflection takes place upstream of the blowing agent nozzle.
- a particularly low production cost has a suction jet pump, wherein the deflecting element is designed for connection to the mixing tube and the diffuser.
- This embodiment allows the use of the same mixing tube and the same diffuser for different locations.
- the adaptation of the suction jet pump to the respective installation conditions takes place in these cases exclusively on the design of the deflecting element.
- the assembly of the suction jet pump is significantly simplified if the deflecting element is integrally formed with the mixing tube or the diffuser or with both parts.
- all components are made of plastic by injection molding.
- the diffuser has a rectilinear profile after the deflecting element.
- the diffuser has a curved course after the deflecting element. This opens up the possibility of further adaptation of the suction jet pump to the available space.
- a particularly small length and a small footprint are achieved according to a further advantageous embodiment with a suction jet pump, the diffuser enclosing the mixing tube coaxial.
- the flow exits from the mixing tube and is deflected by 180 ° by the diffuser, in order then to flow through the diffuser in a direction opposite to that of the mixing tube.
- the flow in the diffuser is not impaired when the diffuser is mounted over its outer periphery and positioned to the mixing tube. Such attachment is given when the diffuser is attached to another component and not to other parts of the ejector.
- Such a connection may be individual webs, which are integrally formed either on the diffuser or in the region of the propulsion jet nozzle and engage with the respective other part or are welded to it.
- the diffuser can have an opening angle between 1 ° and 10 °. In several embodiments, the invention will be explained in more detail. It show in
- FIG. 1 an inventive suction jet pump, Fig. 2, 3 Saugstrahlpumpen with a deflecting element and Fig. 4 is a suction jet pump with coaxial diffuser.
- FIG. 1 shows a suction jet pump and a filter 1 in a fuel tank of a motor vehicle.
- the suction jet pump consists of a propellant conduit 2, via which fuel is supplied from a fuel pump, not shown, as a propellant of the suction jet pump.
- the propellant line 2 is followed by a propellant nozzle 3.
- the fuel emerging from the propellant nozzle 3 enters the mixing tube 5 via the drogue 4. Due to the high velocity of the escaping fuel, a negative pressure is generated in a suction region 6, is sucked through the fuel via a suction port 7 from the fuel tank into the mixing tube 5. After passing through the mixing tube 5, the subsidized
- the diffuser 8 is curved and thus has a deviating from the straight course of the mixing tube 5 course. Due to the curvature of the diffuser 8, the suction jet pump can be positioned in the fuel tank despite the arrangement of the filter 1 at the position shown.
- FIG. 2 shows a suction jet pump with a deflection element 9, which is arranged between the mixing tube 5 and the diffuser 8.
- the deflecting element 9 redirects the pumped fuel
- the diffuser 8 has a parallel to the course of the mixing tube 5 and opposite pointing course. Since the deflection takes place via the deflecting element 9 and this is a separate component, the diffuser 8 can be formed in a straight line.
- the assembly of mixing tube 5, deflecting element 9 and diffuser 8 by means of a plug connection or by gluing or welding.
- FIG. 3 shows an ejector with a deflection element 9.
- the deflection element 9 has only one ne curvature of 45 °. Further, it is integrally connected to the diffuser 8, so that there is only one mounting point to the mixing tube 5.
- the suction jet pump in Figure 4 has a diffuser 8 which is arranged coaxially with the mixing tube 5 and encloses this.
- the pumped fuel exits from the mixing tube 5 and is deflected by the diffuser by 180 °, in order then to flow through the diffuser 8 and thus opposite in a deviating to the mixing tube 5 course.
- the attachment of the diffuser 8 via individual webs 10 which extend from the outer periphery of the diffuser 8 into the region of the propulsion jet nozzle 3.
- a latching step 11 is integrally formed, which engages in a corresponding latching point 12 of another component 13.
- the diffuser 8 is also held and positioned to the mixing tube 5. But it is also conceivable to attach the diffuser 8 only one of the two types of connection.
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
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013203942.5A DE102013203942B4 (de) | 2013-03-07 | 2013-03-07 | In einem Kraftstoffbehälter eines Kraftfahrzeugs angeordnete Saugstrahlpumpe |
| PCT/EP2014/054233 WO2014135574A1 (de) | 2013-03-07 | 2014-03-05 | Saugstrahlpumpe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2964961A1 true EP2964961A1 (de) | 2016-01-13 |
| EP2964961B1 EP2964961B1 (de) | 2017-05-10 |
Family
ID=50236168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP14708245.7A Active EP2964961B1 (de) | 2013-03-07 | 2014-03-05 | Saugstrahlpumpe |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10072674B2 (de) |
| EP (1) | EP2964961B1 (de) |
| CN (1) | CN105190050B (de) |
| DE (1) | DE102013203942B4 (de) |
| WO (1) | WO2014135574A1 (de) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015200341A1 (de) | 2015-01-13 | 2016-07-14 | Polytec Plastics Germany Gmbh & Co. Kg | Mehrstufige Saugstrahlpumpe |
| DE102016206615A1 (de) * | 2016-04-19 | 2017-10-19 | Elringklinger Ag | Ejektorvorrichtung und Kombination aus einer Zylinderkopfhaube und einer Ejektorvorrichtung |
| DE102016206616A1 (de) | 2016-04-19 | 2017-10-19 | Elringklinger Ag | Ejektorvorrichtung und Kombination aus einer Zylinderkopfhaube und einer Ejektorvorrichtung |
| DE102016207459A1 (de) * | 2016-04-29 | 2017-11-02 | Robert Bosch Gmbh | Saugstrahlpumpe |
| FR3063304B1 (fr) * | 2017-02-28 | 2019-03-22 | Akwel | Dispositif d’aspiration et de decantation d’un gaz de carter et installation associee |
| DE102018213313A1 (de) * | 2018-08-08 | 2020-02-13 | Robert Bosch Gmbh | Förderaggregat für ein Brennstoffzellen-System zur Förderung und/oder Steuerung eines gasförmigen Mediums |
| DE102018213327A1 (de) * | 2018-08-08 | 2020-02-13 | Robert Bosch Gmbh | Förderaggregat für ein Brennstoffzellen-System zur Fördern und/oder Rezirkulation eines gasförmigen Mediums |
| DE102018216299B3 (de) | 2018-09-25 | 2020-02-13 | Robert Bosch Gmbh | Brennstoffzellen-System mit einem Förderaggregat und/oder ein Förderaggregat für ein Brennstoffzellen-System zur Förderung und/oder Steuerung eines gasför-migen Mediums |
| DE102019200613A1 (de) | 2019-01-18 | 2020-07-23 | Robert Bosch Gmbh | Strahlpumpeneinheit zum Steuern eines gasförmigen Mediums |
| DE102019204723A1 (de) * | 2019-04-03 | 2020-10-08 | Robert Bosch Gmbh | Förderaggregat für ein Brennstoffzellen-System zur Förderung und/oder Steuerung eines gasförmigen Mediums |
| DE102019214676A1 (de) * | 2019-09-25 | 2021-03-25 | Robert Bosch Gmbh | Förderaggregat für ein Brennstoffzellen-System zur Förderung und/oder Steuerung eines gasförmigen Mediums |
Family Cites Families (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH83025A (de) * | 1918-12-21 | 1920-02-02 | Bbc Brown Boveri & Cie | Verfahren zur Stabilisierung von mit wenigstens zwei Stufen versehenen Dampf- oder Gasstrahlapparaten |
| DE390448C (de) * | 1923-02-11 | 1924-02-23 | Paul H Mueller Dr Ing | Luftabscheider fuer Wasserstrahlluftpumpen |
| US1782310A (en) * | 1926-11-19 | 1930-11-18 | John T Overstreet | Well pumping apparatus |
| US2114905A (en) * | 1936-04-25 | 1938-04-19 | Mcmahon William Frederick | Venturi-tube oil well pump |
| US2616614A (en) | 1948-03-18 | 1952-11-04 | Ingersoll Rand Co | Thermocompressor |
| US3064878A (en) * | 1958-01-03 | 1962-11-20 | Nash Engineering Co | Method and apparatus for high performance evacuation system |
| GB1047423A (de) | 1962-05-18 | |||
| US3174679A (en) * | 1963-04-04 | 1965-03-23 | Ingersoll Rand Co | Ejecting apparatus |
| DE1471625A1 (de) * | 1964-05-19 | 1968-12-05 | Keller Fa Otto | Venturi-Gaswaescher |
| SU737707A1 (ru) * | 1978-10-04 | 1980-05-30 | Курганское Проектно-Конструкторское Бюро | Сопло |
| CN85200098U (zh) * | 1985-04-01 | 1985-10-10 | 武汉大学 | 二级混合泵 |
| GB8511171D0 (en) * | 1985-05-02 | 1985-06-12 | Pneupac Ltd | Entrainment devices |
| JPS63176700A (ja) * | 1987-01-16 | 1988-07-20 | Takuo Mochizuki | 固塊物混入流体の流送用ジエツトポンプ |
| SE464319B (sv) * | 1988-02-05 | 1991-04-08 | Teknovia Ab | Vaetskedriven straalpump |
| DE8815751U1 (de) * | 1988-12-20 | 1989-02-16 | Gebr. Jordan GmbH & Co KG, 5860 Iserlohn | Saugstrahlpumpe für den Einsatz in einem Kraftstofftank |
| FR2720122B1 (fr) * | 1994-05-20 | 1996-06-28 | Inst Francais Du Petrole | Pompe polyphasique bi-turbojets. |
| DE19500346C2 (de) * | 1995-01-07 | 1997-04-10 | Hubert Wax Gmbh & Co Kg | Vorrichtung zur naßmechanischen Behandlung kontaminierter, körniger Materialien und deren Aufschlämmungen |
| DE19530423C2 (de) * | 1995-08-18 | 1999-06-02 | Mannesmann Vdo Ag | Saugstrahlpumpe für den Einsatz in einem Kraftstofftank |
| JP3408377B2 (ja) * | 1996-06-26 | 2003-05-19 | 望月 ▲たく▼夫 | 圧力流体のエネルギー変換装置及びその方法 |
| DE19855433B4 (de) * | 1998-11-27 | 2005-10-06 | Siemens Ag | Saugstrahlpumpe |
| AU714337B3 (en) * | 1999-09-14 | 1999-12-23 | Zoltans Pool Products Pty Ltd | Fluid flow pump |
| DE19957066A1 (de) * | 1999-11-26 | 2001-05-31 | Mannesmann Vdo Ag | Saugstrahlpumpe |
| JP4484399B2 (ja) * | 2001-06-08 | 2010-06-16 | 株式会社ニフコ | ジェットポンプ |
| DE10229801A1 (de) * | 2002-07-03 | 2004-01-22 | Ti Automotive (Neuss) Gmbh | Saugstrahlpumpe |
| US8197602B2 (en) * | 2008-01-18 | 2012-06-12 | Baron Michael J | Ultrasonic jet-pump cleaner |
-
2013
- 2013-03-07 DE DE102013203942.5A patent/DE102013203942B4/de active Active
-
2014
- 2014-03-05 WO PCT/EP2014/054233 patent/WO2014135574A1/de not_active Ceased
- 2014-03-05 US US14/772,686 patent/US10072674B2/en active Active
- 2014-03-05 EP EP14708245.7A patent/EP2964961B1/de active Active
- 2014-03-05 CN CN201480011818.1A patent/CN105190050B/zh active Active
Also Published As
| Publication number | Publication date |
|---|---|
| US20160017896A1 (en) | 2016-01-21 |
| EP2964961B1 (de) | 2017-05-10 |
| DE102013203942A1 (de) | 2014-09-11 |
| WO2014135574A1 (de) | 2014-09-12 |
| DE102013203942B4 (de) | 2014-12-04 |
| CN105190050B (zh) | 2018-01-12 |
| US10072674B2 (en) | 2018-09-11 |
| CN105190050A (zh) | 2015-12-23 |
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