DE102004057688A1 - Diaphragm pump motor vehicle, has diaphragm with metallic diaphragm body which is formed from corrosion-resistant steel, and lifter pin connected with body by welding for actuating diaphragm - Google Patents
Diaphragm pump motor vehicle, has diaphragm with metallic diaphragm body which is formed from corrosion-resistant steel, and lifter pin connected with body by welding for actuating diaphragm Download PDFInfo
- Publication number
- DE102004057688A1 DE102004057688A1 DE102004057688A DE102004057688A DE102004057688A1 DE 102004057688 A1 DE102004057688 A1 DE 102004057688A1 DE 102004057688 A DE102004057688 A DE 102004057688A DE 102004057688 A DE102004057688 A DE 102004057688A DE 102004057688 A1 DE102004057688 A1 DE 102004057688A1
- Authority
- DE
- Germany
- Prior art keywords
- diaphragm
- membrane
- diaphragm pump
- membrane body
- pump
- 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- Withdrawn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
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/0009—Special features
- F04B43/0054—Special features particularities of the flexible members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/16—Selection of particular materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1433—Pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
Die Erfindung geht aus von einer Membranpumpe und einer Membranpumpenmembran nach den Oberbegriffen der Ansprüche 1 und 7.The The invention is based on a membrane pump and a membrane pump membrane according to the preambles of the claims 1 and 7.
Beim Verbrennungsvorgang von Diesel- und Benzinmotoren entstehen giftige Gase, beispielsweise Stickoxide NOx. Zur Beseitigung bzw. Zersetzung dieser Stickoxide ist bereits vorgeschlagen worden, in den fahrzeugseitigen Katalysator Harnstoff einzuspritzen. Da Harnstoff ein chemisch aggressives und zum Auskristallisieren neigendes Medium ist, das zudem zum Kriechen neigt, wurden zu dessen Förderung Membranförderpumpen vorgeschlagen, die für solche Stoffe vorteilhaft sind.At the Combustion process of diesel and gasoline engines are toxic Gases, for example nitrogen oxides NOx. To eliminate or decompose this Nitrogen oxides has already been proposed in the vehicle side Catalyst urea inject. Because urea is a chemically aggressive and the crystallization-prone medium, which also causes creeping tends to be its promotion Membrane feed pumps proposed for such Substances are advantageous.
Bei Membranpumpen kommt das Medium mit den Antriebsaggregaten nicht in Berührung, der Förderraum ist vom Aggregateraum durch die Membran getrennt. Üblicherweise erfolgt die Förderung durch einen Auf- und Abhub der mit einem Stößel beaufschlagten Membran. Damit sind allerdings die erreichbaren Drücke der Membranpumpe beschränkt, während bei der Harnstoffförderung eher höhere Drücke wünschenswert sind. Zur Bereitstellung höherer Förderdrücke sind allerdings aufwändige und robuste Konstruktionen notwendig, die mit üblichen Membranpumpen nicht einfach darstellbar sind.at Diaphragm pumps do not get the medium with the drive units in touch, the pump room is separated from the aggregate space by the membrane. Usually the promotion takes place through an up and down stroke of the acted upon by a plunger membrane. Thus, however, the achievable pressures of the diaphragm pump are limited, while at urea production rather higher pressures desirable are. To provide higher delivery pressures are but elaborate and robust constructions necessary, which with conventional diaphragm pumps not are easy to represent.
Vorteile der ErfindungAdvantages of invention
Es wird vorgeschlagen, dass eine Membranpumpe eine Membranpumpenmembran mit einem metallischen Membrankörper aufweist. Im Gegensatz zu üblichen Membranen aus Gummi oder Gewebefolien ist der Membrankörper sehr robust. Die Membranpumpe kann weiterhin mit einem deutlich höheren Förderdruck, insbesondere über 5 bar, arbeiten und weist eine verbesserte Lebensdauer ihrer Membranpumpenmembran auf, die deutlich über den bei Gummimembranen üblichen 10000 Stunden liegt. Die Membranpumpe ist kostengünstig herstellbar und für den Einsatz in harnstoffbasierten Entstickungssystemen von Kraftfahrzeugen besonders geeignet.It It is suggested that a diaphragm pump be a diaphragm pump diaphragm with a metallic membrane body having. Unlike usual Membranes made of rubber or fabric films is the membrane body very robust. The membrane pump can continue with a significantly higher delivery pressure, especially about 5 bar, work and has an improved lifetime of their diaphragm pump diaphragm on that clearly over the usual with rubber membranes 10000 hours. The diaphragm pump is inexpensive to produce and for the use in urea-based Entstickungssystemen of motor vehicles particularly suitable.
Vorzugsweise ist der Membrankörper aus korrosionsresistentem Stahl gebildet. Dies ist günstig, wenn mit entsprechend langer Lebensdauer aggressive Medien wie Harnstoff gefördert werden sollen. Bevorzugt ist ein Chrom-Nickel-Stahl.Preferably is the membrane body Made of corrosion-resistant steel. This is cheap if with a correspondingly long service life aggressive media such as urea promoted should be. Preference is given to a chromium-nickel steel.
Ist zur Betätigung der Membranpumpenmembran ein Stößelbolzen mit dem Membrankörper verbunden, kann eine Beaufschlagung zum Durchführen der Medienförderung einfach durchgeführt werden, wobei insbesondere der Stößelbolzen mit einem Exzenter verbunden ist.is for operation the membrane pump membrane a plunger pin connected to the membrane body, may be an admission to carry out the media promotion easy to be done in particular, the plunger bolt connected to an eccentric.
Zweckmäßigerweise ist der Stößelbolzen mit dem Membrankörper verschweißt. Bevorzugt ist der Stößelbolzen mittels Laserschweißen befestigt. Dies ergibt eine dauerfeste Verbindung mit hoher Lebensdauer.Conveniently, is the plunger pin with the membrane body welded. Preferably, the plunger bolt secured by laser welding. This results in a durable connection with a long service life.
Weist der Membrankörper eine konzentrische, wellenförmig besickte Struktur auf, kann die Lebensdauer weiter verbessert werden. Die Sicken bewirken ein Schwingungsverhalten der Membranpumpenmembran, das für einen Dauereinsatz gut geeignet ist.has the membrane body a concentric, wavy If the structure is thick, the service life can be further improved. The beads cause a vibration behavior of the membrane pump membrane, that for a continuous use is well suited.
Weiterhin wird eine Membranpumpenmembran für eine Membranpumpe mit Exzenterantrieb vorgeschlagen, deren Membrankörper aus Metall gebildet ist. Bevorzugt ist der Membrankörper aus korrosionsresistentem Stahl gebildet. Besonders im Einsatz beim Fördern chemisch aggressiver Medien zeigt eine derartige Membranpumpenmembran eine deutlich verbesserte Lebensdauer im Vergleich zu üblichen Membranen aus Gummi oder Gewebefolien. Weiterhin können solche Membranpumpenmembranen mit erhöhten Förderdrücken oder Gegendrücken belastet werden.Farther is a diaphragm pump diaphragm for proposed a diaphragm pump with eccentric drive, the membrane body of Metal is formed. The membrane body is preferably made of corrosion-resistant material Steel formed. Especially in use when pumping chemically aggressive Media shows such a membrane pump membrane significantly improved Lifespan compared to usual Membranes made of rubber or fabric films. Furthermore, such Membrane pump membranes with elevated Delivery pressures or Back pressure loaded become.
Bevorzugt weist der Membrankörper eine konzentrische, wellenförmig besickte Struktur auf. Dadurch werden Schwingungseigenschaften des Membrankörpers vorteilhaft beeinflusst, insbesondere bei einer im Betrieb üblichen Auf- und Abbewegung bezogen auf die Mittelachse des scheibenförmigen Membrankörpers.Prefers indicates the membrane body a concentric, wavy loaded structure. As a result, vibration characteristics of the membrane body are advantageous influenced, especially in a normal operation in the up and down movement with respect to the central axis of the disc-shaped membrane body.
Vorteilhaft ist, wenn eine Wölbung der Sicken der Struktur so ausgelegt ist, dass sich bei einer bestimmungsgemäßen periodischen Beaufschlagung des Membrankörpers mit Antriebskraft in axialer Richtung eine Dauerschwingungsbeanspruchung im elastischen Bereich aus bildet. Der Membrankörper wird nur elastisch belastet Lebensdauer verkürzende, inelastische Verformungen vermieden. Es kön nen vorteilhafte Lebensdauern erreicht werden, die dauerbeanspruchten Federn entsprechen.Advantageous is when a vault the beading of the structure is designed so that at a regular periodic Actuation of the membrane body with driving force in the axial direction a fatigue stress forms in the elastic region. The membrane body is loaded only elastically Lifetime shortening, Inelastic deformations avoided. There can be advantageous lifetimes be achieved, the permanently loaded springs correspond.
Weist der Membrankörper in seinem Zentrum einen Stößelbolzen auf, kann eine Verbindung zu einem Exzenterantrieb im Einsatz der Membranpumpenmembran ohne größeren Aufwand hergestellt werden, wie dies bei üblichen Membranpumpen üblich ist.has the membrane body in its center a pestle bolt On, can connect to an eccentric drive in use Membrane pump membrane without much effort be prepared, as is usual in conventional diaphragm pumps.
Zweckmäßigerweise ist der Stößelbolzen in einer napfförmigen, zum Stößelbolzen hin konvex ausgebildeten Auswölbung des Membrankörpers angeordnet. Diese Anordnung sorgt für eine zuverlässige Umleitung von dynamischen Kräften bei einem üblichen Einsatz der Membranpumpenmembran.Conveniently, is the plunger pin in a cup-shaped, to the plunger pin towards convex bulge of the membrane body arranged. This arrangement ensures a reliable diversion of dynamic forces at a usual Use of the membrane pump membrane.
Vorzugsweise ist der Stößelbolzen mit dem Membrankörper fest verbunden, bevorzugt ist der Stößelbolzen mit dem Membrankörper verschweißt.Preferably is the plunger pin with the membrane body firmly connected, preferably the plunger bolt is welded to the membrane body.
Zeichnungendrawings
Die Erfindung wird nachfolgend in einem Ausführungsbeispiel anhand der zugehörigen Zeichnungen näher erläutert. Es zeigen:The Invention will be described below in an embodiment with reference to the accompanying drawings explained in more detail. It demonstrate:
Beschreibung des Ausführungsbeispielsdescription of the embodiment
Eine
Förderung
des Mediums, das durch Pfeile an einem Eingang
Wie
weiter in
Am
Rand
Zur
Umlenkung der bei der Auf- und Abbewegung der Membranpumpenmembran
Die
Membran
In
Claims (14)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004057688A DE102004057688A1 (en) | 2004-11-30 | 2004-11-30 | Diaphragm pump motor vehicle, has diaphragm with metallic diaphragm body which is formed from corrosion-resistant steel, and lifter pin connected with body by welding for actuating diaphragm |
PCT/EP2005/054620 WO2006058801A1 (en) | 2004-11-30 | 2005-09-16 | Diaphragm pump and diaphragm for a diaphragm pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004057688A DE102004057688A1 (en) | 2004-11-30 | 2004-11-30 | Diaphragm pump motor vehicle, has diaphragm with metallic diaphragm body which is formed from corrosion-resistant steel, and lifter pin connected with body by welding for actuating diaphragm |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102004057688A1 true DE102004057688A1 (en) | 2006-06-01 |
Family
ID=35427732
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102004057688A Withdrawn DE102004057688A1 (en) | 2004-11-30 | 2004-11-30 | Diaphragm pump motor vehicle, has diaphragm with metallic diaphragm body which is formed from corrosion-resistant steel, and lifter pin connected with body by welding for actuating diaphragm |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102004057688A1 (en) |
WO (1) | WO2006058801A1 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006044253B3 (en) * | 2006-09-16 | 2008-03-27 | Thomas Magnete Gmbh | Membrane, for a hydraulic membrane pump for diesel exhaust cleaning, has a recess to define the exact delivery dose volume |
DE102009028027A1 (en) | 2009-07-27 | 2011-02-03 | Robert Bosch Gmbh | Fluid feed pump |
DE102010042944A1 (en) | 2010-10-26 | 2012-04-26 | Robert Bosch Gmbh | Working wall element of a fluid conveyor |
DE102011089509A1 (en) | 2011-12-22 | 2013-06-27 | Robert Bosch Gmbh | Conveyor and dosing |
DE102013211164A1 (en) | 2013-06-14 | 2014-12-31 | Robert Bosch Gmbh | Magnetic actuator for a delivery unit |
DE102015226463A1 (en) | 2015-12-22 | 2017-06-22 | Robert Bosch Gmbh | Magnetic actuator for a delivery unit |
CN108884822A (en) * | 2017-07-28 | 2018-11-23 | 深圳市大疆创新科技有限公司 | diaphragm pump |
WO2020038639A1 (en) | 2018-08-20 | 2020-02-27 | Robert Bosch Gmbh | Pump assembly |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
HUE049431T2 (en) | 2007-11-21 | 2020-09-28 | Smith & Nephew | Wound dressing |
GB201015656D0 (en) | 2010-09-20 | 2010-10-27 | Smith & Nephew | Pressure control apparatus |
US9084845B2 (en) | 2011-11-02 | 2015-07-21 | Smith & Nephew Plc | Reduced pressure therapy apparatuses and methods of using same |
WO2013140255A1 (en) | 2012-03-20 | 2013-09-26 | Smith & Nephew Plc | Controlling operation of a reduced pressure therapy system based on dynamic duty cycle threshold determination |
US9427505B2 (en) | 2012-05-15 | 2016-08-30 | Smith & Nephew Plc | Negative pressure wound therapy apparatus |
SG11201704255WA (en) | 2014-12-22 | 2017-07-28 | Smith & Nephew | Negative pressure wound therapy apparatus and methods |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB269263A (en) * | 1926-01-20 | 1927-04-20 | Reginald Luther Munday | A new or improved diaphragm pump |
US1927617A (en) * | 1930-01-15 | 1933-09-19 | Schmidt Rudolf | Piston engine or piston pump |
US3722373A (en) * | 1969-06-23 | 1973-03-27 | Sybron Corp | Differential pressure responsive device of welded construction |
PT1536137E (en) * | 2003-11-25 | 2007-01-31 | Magneti Marelli Powertrain Spa | Fuel pump for an internal combustion engine |
-
2004
- 2004-11-30 DE DE102004057688A patent/DE102004057688A1/en not_active Withdrawn
-
2005
- 2005-09-16 WO PCT/EP2005/054620 patent/WO2006058801A1/en active Application Filing
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006044253B3 (en) * | 2006-09-16 | 2008-03-27 | Thomas Magnete Gmbh | Membrane, for a hydraulic membrane pump for diesel exhaust cleaning, has a recess to define the exact delivery dose volume |
DE102009028027A1 (en) | 2009-07-27 | 2011-02-03 | Robert Bosch Gmbh | Fluid feed pump |
DE102010042944A1 (en) | 2010-10-26 | 2012-04-26 | Robert Bosch Gmbh | Working wall element of a fluid conveyor |
WO2012055636A1 (en) | 2010-10-26 | 2012-05-03 | Robert Bosch Gmbh | Working wall element of a fluid conveying device |
DE102011089509A1 (en) | 2011-12-22 | 2013-06-27 | Robert Bosch Gmbh | Conveyor and dosing |
WO2013092957A1 (en) | 2011-12-22 | 2013-06-27 | Robert Bosch Gmbh | Delivery device and dosing arrangement |
DE102013211164A1 (en) | 2013-06-14 | 2014-12-31 | Robert Bosch Gmbh | Magnetic actuator for a delivery unit |
DE102015226463A1 (en) | 2015-12-22 | 2017-06-22 | Robert Bosch Gmbh | Magnetic actuator for a delivery unit |
WO2017108388A1 (en) | 2015-12-22 | 2017-06-29 | Robert Bosch Gmbh | Magnetic actuator for a conveying unit |
CN108884822A (en) * | 2017-07-28 | 2018-11-23 | 深圳市大疆创新科技有限公司 | diaphragm pump |
WO2020038639A1 (en) | 2018-08-20 | 2020-02-27 | Robert Bosch Gmbh | Pump assembly |
Also Published As
Publication number | Publication date |
---|---|
WO2006058801A1 (en) | 2006-06-08 |
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8139 | Disposal/non-payment of the annual fee |