DE102007057446A1 - Fluid delivery device and valve device and method for operating a fluid delivery device - Google Patents
Fluid delivery device and valve device and method for operating a fluid delivery device Download PDFInfo
- Publication number
- DE102007057446A1 DE102007057446A1 DE102007057446A DE102007057446A DE102007057446A1 DE 102007057446 A1 DE102007057446 A1 DE 102007057446A1 DE 102007057446 A DE102007057446 A DE 102007057446A DE 102007057446 A DE102007057446 A DE 102007057446A DE 102007057446 A1 DE102007057446 A1 DE 102007057446A1
- Authority
- DE
- Germany
- Prior art keywords
- fluid
- valve
- compression space
- check valve
- valve device
- 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- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/1037—Flap valves
- F04B53/1047—Flap valves the valve being formed by one or more flexible elements
- F04B53/105—Flap valves the valve being formed by one or more flexible elements one flexible element oscillating around a fixed point
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/108—Valves characterised by the material
- F04B53/1082—Valves characterised by the material magnetic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2201/00—Pump parameters
- F04B2201/06—Valve parameters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2205/00—Fluid parameters
- F04B2205/09—Flow through the pump
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
Stand der TechnikState of the art
Es gibt Fluidfördereinrichtungen zum Einspeisen eines Fluids, beispielsweise einer Harnstoff-Wasser-Lösung, in das Abgas einer Brennkraftmaschine. Mit der eingespritzten Lösung sollen in einem nachfolgenden Katalysator Schadstoffe in dem Abgas der Brennkraftmaschine reduziert werden. Die Pumpe der Fluidfördereinrichtung saugt das Fluid aus einem Fluidvorratsbehälter und pumpt es zu dem Einspritzventil, über das das Fluid in die Abgasleitung der Brennkraftmaschine eingespritzt wird. Weil das Fluid, beispielsweise die Harnstoff-Wasser-Lösung, unterhalb einer Gefriertemperatur fest wird, muss, wenn Gefahr besteht, dass diese Temperatur unterschritten werden kann, das Fluid aus der zum Einspritzventil führenden Leitung abgesaugt werden. Dazu kann ein zusätzliches 4/2-Wege-Umschaltventil vorgesehen werden, so dass bei umgeschaltetem Wegeventil das Fluid aus der zum Einspritzventil führenden Leitung gesaugt und in den Fluidvorratsbehälter zurücktransportiert wird. Allerdings erfordert das zusätzliche Umschaltventil einen erheblichen zusätzlichen Bauaufwand.It are fluid conveyors for feeding a fluid, for example, a urea-water solution in the exhaust gas an internal combustion engine. With the injected solution should pollutants in the exhaust gas in a subsequent catalyst the internal combustion engine can be reduced. The pump of the fluid delivery device sucks the fluid from a fluid reservoir and pumps it to the injection valve through which the fluid into the exhaust pipe of the Internal combustion engine is injected. Because the fluid, for example the urea-water solution, below a freezing temperature becomes firm, if there is a risk that this temperature falls below can be, the fluid from the leading to the injection valve Be sucked line. This can be an additional 4/2-way switching valve be provided so that when switched directional valve, the fluid sucked out of the line leading to the injection valve and transported back into the fluid reservoir becomes. However, the additional switching valve requires a considerable additional construction costs.
Die
Pumpe der Fluidfördereinrichtung ist beispielsweise eine
Membranpumpe, wie sie in dem deutschen Gebrauchsmuster
Pumpen
mit oszillierend sich vergrößerndem und verkleinerndem
Kompressionsraum benötigen, um pumpen zu können,
mindestens ein Einlassrückschlagventil und mindestens ein
Auslassrückschlagventil. Diese Rückschlagventile
sehen beispielsweise aus wie in der
Offenbarung der ErfindungDisclosure of the invention
Vorteile der ErfindungAdvantages of the invention
Die erfindungsgemäße Fluidfördereinrichtung mit einer Pumpe und die erfindungsgemäße Ventileinrichtung für eine Pumpe und das erfindungsgemäße Verfahren zum Betreiben einer Fluidfördereinrichtung haben den Vorteil, dass es nur einer kleinen, leicht ausführbaren Abwandlung der bei Pumpen mit oszillierend sich vergrößerndem und verkleinerndem Kompressionsraum einlassseitig und auslassseitig auf jeden Fall benötigten Rückschlagventile bedarf, um die Pumpe sowohl in einer Förderrichtung als auch in einer entgegengesetzt zur Förderrichtung gerichteten Rückförderrichtung arbeiten zu lassen. Die vorgeschlagene Ausführung bietet den Vorteil, dass ein ansonsten für eine Rückförderung erforderliches Umschaltventil eingespart werden kann. Weil kein zusätzliches Umschaltventil erforderlich ist, ergibt sich ein verringerter Bauaufwand, ein kleineres Volumen und ein kleineres Gewicht im Vergleich mit bisher bekannten Ausführungen. Durch die in den abhängigen Ansprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der Fluidfördereinrichtung und der Ventileinrichtung, sowie des Verfahrens zum Betreiben einer Fluidfördereinrichtung möglich.The Fluid delivery device according to the invention with a pump and the valve device according to the invention for a pump and the invention Have method for operating a fluid conveyor the advantage that it is only a small, easily executable Variation of the pumps with oscillating magnifying and decreasing compression space on the inlet side and outlet side definitely needed check valves, around the pump both in a conveying direction and in an oppositely directed to the conveying direction return direction to work. The proposed design offers the advantage that an otherwise required for a return promotion Switching valve can be saved. Because no extra Changeover valve is required, resulting in a reduced construction costs, a smaller volume and a smaller weight compared with previously known designs. By in the dependent Claims are listed advantageous developments and improvements of the fluid conveyor and the valve device, and the method for operating a Fluid conveyor possible.
Durch das Zusammenfassen der beiden die beiden Anschlüsse des Kompressionsraums steuernden Rückschlagventile in der Weise, dass beide Rückschlagventile mit einem gemeinsamen Steller steuerbar sind, wobei der Steller vorzugsweise ein elektrischer Magnet ist, ergibt sich eine weitere Reduzierung des Bauaufwands.By summarizing the two the two connections of the Compression chamber controlling check valves in the way that both check valves controllable with a common actuator wherein the actuator is preferably an electric magnet, results in a further reduction of construction costs.
Haben die Rückschlagventile einen Schließkörper, der sowohl in Förderrichtung, als auch in Rückförderrichtung den Ein- und Auslass zum Kompressionsraum steuert, so hat dies den Vorteil einer zusätzlichen Reduzierung des Bauaufwands.To have the check valves a closing body, in the conveying direction as well as in the return direction controls the inlet and outlet to the compression chamber, so this has the Advantage of an additional reduction in construction costs.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Bevorzugt ausgewählte, besonders vorteilhafte Ausführungsbeispiele der Erfindung sind in den Zeichnungen vereinfacht dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen diePrefers selected, particularly advantageous embodiments The invention are shown in simplified form in the drawings and explained in more detail in the following description. It show the
Ausführungsformen der Erfindungembodiments the invention
Die
Die
Fluidfördereinrichtung
Das
Einspritzventil
Um
ein Fluid verwenden zu können, das unterhalb einer bestimmten
Erstarrungstemperatur fest ist, wie es beispielsweise bei einer
Harnstoff-Wasser-Lösung der Fall ist, wird die Möglichkeit
benötigt, dass bei einer Gefahr, dass diese Erstarrungstemperatur unterschritten
werden könnte, die Fluidleitung
Die
Pumpe
Die
Pumpe
Die
Pumpe
Die
Arbeitswand
In
das Pumpengehäuse
Die
Ventileinrichtung
Das
erste Rückschlagventil
Das
zweite Rückschlagventil
Bei
nicht bestromtem Magnet
Der
erste Ventilsitz
Der
erste Ventilsitz
Bei
arbeitendem Pumpenantrieb
Während
sich der Kompressionsraum
Während
eines Druckhubs, d. h. wenn sich der Kompressionsraum
Durch
das Fördern von Fluid aus dem Kompressionsraum
Wenn
sich die Ventileinrichtung
Bei
der in der
Bei
bestromtem Magnet
Bei
bestromtem Magnet
Die
In allen Figuren sind gleiche oder gleich wirkende Teile mit denselben Bezugszeichen versehen. Sofern nichts Gegenteiliges erwähnt bzw. in der Zeichnung dargestellt ist, gilt das anhand einer der Figuren Erwähnte und Dargestellte auch bei den anderen Figuren.In all figures are the same or equivalent parts with the same Provided with reference numerals. Unless otherwise stated or is shown in the drawing, this applies with reference to one of the figures Mentioned and portrayed also with the other figures.
Die
Der
Schließkörper
Die
Platte
Beim
dargestellten bevorzugt ausgewählten Ausführungsbeispiel
befinden sich der Ventilsitz
Die
Platte
Der
Magnet
Wenn
die Magnetspule
Die
Bei
nicht bestromtem Magnet
Bei
bestromtem Magnet
Mit
anderen Worten, durch entsprechendes Ansteuern des Magneten
Bei
dem bevorzugt ausgewählten, beschriebenen Ausführungsbeispiel
ist die Ventileinrichtung
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 29620094 U1 [0002, 0003, 0020] - DE 29620094 U1 [0002, 0003, 0020]
- - DE 102004002078 A1 [0003] DE 102004002078 A1 [0003]
Claims (11)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007057446A DE102007057446A1 (en) | 2007-11-29 | 2007-11-29 | Fluid delivery device and valve device and method for operating a fluid delivery device |
PCT/EP2008/066094 WO2009068506A1 (en) | 2007-11-29 | 2008-11-24 | Fluid conveyance apparatus and valve apparatus and method for operating a fluid conveyance apparatus |
EP08855348A EP2225466B1 (en) | 2007-11-29 | 2008-11-24 | Fluid conveyance apparatus and valve apparatus and method for operating a fluid conveyance apparatus |
AT08855348T ATE528510T1 (en) | 2007-11-29 | 2008-11-24 | FLUID FEEDING DEVICE AND VALVE DEVICE AND METHOD FOR OPERATING A FLUID FEEDING DEVICE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007057446A DE102007057446A1 (en) | 2007-11-29 | 2007-11-29 | Fluid delivery device and valve device and method for operating a fluid delivery device |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102007057446A1 true DE102007057446A1 (en) | 2009-06-04 |
Family
ID=40451352
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102007057446A Withdrawn DE102007057446A1 (en) | 2007-11-29 | 2007-11-29 | Fluid delivery device and valve device and method for operating a fluid delivery device |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2225466B1 (en) |
AT (1) | ATE528510T1 (en) |
DE (1) | DE102007057446A1 (en) |
WO (1) | WO2009068506A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009055375A1 (en) | 2009-12-29 | 2011-06-30 | Robert Bosch GmbH, 70469 | Diaphragm pump for use in fluid conveyor system for conveying and returning aqueous urea solutions to/from catalytic converter of motor vehicle, has bodies pushed toward seats, respectively for conveying fluid in returning direction |
DE102010029600A1 (en) | 2010-06-01 | 2011-12-01 | Robert Bosch Gmbh | Metering system for metering reducing agent, particularly aqueous urea solution, in exhaust section of motor vehicle, has injection valve and two check valves, which are arranged within metering system upstream of injection valve |
WO2013087668A1 (en) * | 2011-12-15 | 2013-06-20 | Robert Bosch Gmbh | Pumping unit |
WO2019223927A1 (en) | 2018-05-23 | 2019-11-28 | Robert Bosch Gmbh | Fluid-conveying device for a freezable fluid, metering system and method for operating a fluid-conveying device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29620094U1 (en) | 1996-11-20 | 1998-03-26 | Knf-Neuberger Gmbh, 79112 Freiburg | Diaphragm pump |
DE102004002078A1 (en) | 2004-01-15 | 2005-08-18 | Knf Flodos Ag | Valve |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB191220602A (en) * | 1912-09-10 | 1913-04-17 | Norman Dickson | Improvements in connection with Valves for Pumps. |
US2299448A (en) * | 1940-01-16 | 1942-10-20 | Zwicky Jean | Pump and filter therefor |
SE504043C2 (en) * | 1995-02-06 | 1996-10-21 | Carl Goeran Hellstroem | Piston pump and check valve arrangement for such a piston pump |
DE19946902A1 (en) * | 1999-09-30 | 2001-04-05 | Bosch Gmbh Robert | Device for the aftertreatment of exhaust gases from an internal combustion engine |
-
2007
- 2007-11-29 DE DE102007057446A patent/DE102007057446A1/en not_active Withdrawn
-
2008
- 2008-11-24 WO PCT/EP2008/066094 patent/WO2009068506A1/en active Application Filing
- 2008-11-24 EP EP08855348A patent/EP2225466B1/en active Active
- 2008-11-24 AT AT08855348T patent/ATE528510T1/en active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29620094U1 (en) | 1996-11-20 | 1998-03-26 | Knf-Neuberger Gmbh, 79112 Freiburg | Diaphragm pump |
DE102004002078A1 (en) | 2004-01-15 | 2005-08-18 | Knf Flodos Ag | Valve |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009055375A1 (en) | 2009-12-29 | 2011-06-30 | Robert Bosch GmbH, 70469 | Diaphragm pump for use in fluid conveyor system for conveying and returning aqueous urea solutions to/from catalytic converter of motor vehicle, has bodies pushed toward seats, respectively for conveying fluid in returning direction |
DE102010029600A1 (en) | 2010-06-01 | 2011-12-01 | Robert Bosch Gmbh | Metering system for metering reducing agent, particularly aqueous urea solution, in exhaust section of motor vehicle, has injection valve and two check valves, which are arranged within metering system upstream of injection valve |
WO2013087668A1 (en) * | 2011-12-15 | 2013-06-20 | Robert Bosch Gmbh | Pumping unit |
WO2019223927A1 (en) | 2018-05-23 | 2019-11-28 | Robert Bosch Gmbh | Fluid-conveying device for a freezable fluid, metering system and method for operating a fluid-conveying device |
Also Published As
Publication number | Publication date |
---|---|
EP2225466A1 (en) | 2010-09-08 |
WO2009068506A1 (en) | 2009-06-04 |
ATE528510T1 (en) | 2011-10-15 |
EP2225466B1 (en) | 2011-10-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20130601 |