EP2161455B1 - Double pump - Google Patents

Double pump Download PDF

Info

Publication number
EP2161455B1
EP2161455B1 EP08015575.7A EP08015575A EP2161455B1 EP 2161455 B1 EP2161455 B1 EP 2161455B1 EP 08015575 A EP08015575 A EP 08015575A EP 2161455 B1 EP2161455 B1 EP 2161455B1
Authority
EP
European Patent Office
Prior art keywords
pump
double pump
flow
check valve
inflow
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.)
Active
Application number
EP08015575.7A
Other languages
German (de)
French (fr)
Other versions
EP2161455A1 (en
Inventor
Niels Kristian Bach Andersen
Michael Høyer Lillelund
Jørgen Schmidt
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.)
Grundfos Management AS
Original Assignee
Grundfos Management AS
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 Grundfos Management AS filed Critical Grundfos Management AS
Priority to EP08015575.7A priority Critical patent/EP2161455B1/en
Publication of EP2161455A1 publication Critical patent/EP2161455A1/en
Application granted granted Critical
Publication of EP2161455B1 publication Critical patent/EP2161455B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
    • F04D15/0016—Control, e.g. regulation, of pumps, pumping installations or systems by using valves mixing-reversing- or deviation valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/12—Combinations of two or more pumps
    • F04D13/14—Combinations of two or more pumps the pumps being all of centrifugal type

Definitions

  • the invention relates to a double pump with the features specified in the preamble of claim 1.
  • Double pumps are particularly state of the art as heating circulation pumps and serve to ensure the pumping capacity even in the event of a pump failure.
  • the second pump of the double pump can be switched on and take over the pump function.
  • a return flow of the pumped medium into the failed first centrifugal pump and thus a short-circuit current is to be avoided.
  • double pumps regularly have a non-return valve, which closes the output of the non-active pump.
  • These check valves are usually flow controlled, i. They are controlled by the flow of the pumped medium in their respective closed or open position and held there.
  • Such a double pump with a flow-controlled non-return valve is manufactured under the type name MAGNA-UPE (D) 32-120F from Grundfos.
  • the double pump according to the invention has two pumps, the pressure-side lines open into a common output line. Furthermore, it has a flow-controlled non-return valve arranged in the mouth region of the pressure-side lines, which flow passage when flowing through a first pressure-side line the other, two te, pressure-side line closes.
  • the non-return flap of the double pump has at least one in the closed position in the flow path projecting and upstream facing inflow surface, which is formed by a valve disposed on the non-return valve spoiler. In this closed position, the flow path is formed by the first pressure-side line and the common output line.
  • the inflow area from the inflow in the flow path can apply a closing force sufficient for the check flap closure even at high delivery flows or at low delivery pressures.
  • a significantly improved flap closure and therefore at low delivery pressures achieve a significantly increased delivery rate.
  • a equipped with the non-return valve according to the invention double pump can thus be operated over the entire speed range without certain speed ranges should not be approached because of poorly closing check valve and thus poorer efficiency of the pump.
  • the invention is in the double pump formed the inflow by a arranged on the non-return flap spoiler.
  • the non-return flap preferably has an inflow surface at its two flat sides facing away from one another. This is particularly relevant for non-return valves, which can each mutually close an outlet of a pump and to have two closed positions. With the formation of each an inflow surface on the two facing away from each other flat sides of the non-return valve, it is strömungskraftbeaufschlagbar in each closed position.
  • the inflow surfaces are each surrounded by a sealing surface in the double pump.
  • This embodiment is particularly useful for the double pump described above.
  • the check valve in each closed position with its sealing surface tightly against the respective output of a pump and also be subjected to force in each of its closed position by flow.
  • the arrangement of the sealing surface allows a uniform application of force to the sealing surface in the direction of a contact surface.
  • the inflow surface is in a sealing surface formed in this way almost the entire flat side of the flap available, so that the sealing surface in the design and design of the inflow surface forms virtually no restriction.
  • the inflow surface is uniaxially curved, wherein on the one hand the axis of curvature is arranged parallel to the pivot axis of the flap and on the other hand, the curved inflow surface is arranged concavely to the flow path.
  • the flap is curved in such a way that the upstream surface merges with a nearly smooth transition as steadily as possible into a flat side of the non-return flap upstream. In such a Design can be an efficient application of force to the non-return valve at the same time achieve extremely low flow resistance.
  • double pump 5 is a heating circulation pump.
  • the double pump 5 has an input line 7, the two in a common housing 8 arranged centrifugal pumps 10, 15 feeds.
  • the common input line 7 branches into two supply lines, each of which opens into a suction mouth of the two pumps 10, 15 (not shown in the drawing).
  • the two suction orifices each feed an impeller 16, 17 of the two pumps, from which the delivery fluid exits radially and subsequently via two screw housing 18, 19 to two pressure-side lines 20, 25 of the pumps 10, 15 passes.
  • These two pressure-side lines 20, 25 open into an orifice region 27 in a common outlet line 30 of the double pump 5.
  • a non-return valve 35 is pivotally mounted about an axis 40.
  • the check valve 35 can in each case a line 20, 25 of the two pumps 10, 15 close. Therefore, the non-return valve 35 is formed on both flat sides 45, 50 for engagement with a respective contact surface 55, 60 of the two pressure-side lines 20, 25.
  • the non-return valve 35 on its two flat sides 45, 50, two sealing surfaces 65, 70, which with the contact surfaces 55, 60 a dense Allow closure of the conduit 20 or the conduit 25.
  • the sealing surfaces 65, 70 are formed by the flat sides of the non-return valve 35.
  • the sealing surface only in the system area, that is to say, for example, in the area of a peripheral edge of the non-return flap 35.
  • the check valve 35 closes the right-hand pressure-side line 25 of the right pump 15, so that the left-hand pressure-side line 20 of the left pump 10 with the common output line 30 forms a flow path 75.
  • the check valve 35 has on its flat sides 45, 50 in each case an inflow surface 80, 85, of which the inflow surface 80, which is close to the flow path 75, projects into the flow path 75.
  • This is the left inflow surface 80.
  • the design of the inflow surfaces 80, 85 can Fig. 2 be removed.
  • one of two spoilers 90, 95 is attached to the two flat sides 45, 50, whose sides 80, 85 remote from the longitudinal center plane of the non-return flap 35 form the inflow surfaces 80, 85.
  • the inflow surfaces 80, 85 pass steadily and smoothly into the flat sides 45, 50 of the non-return flap 35 at their sides close to the pivot axis 40.
  • the spoilers 90, 95 are substantially thin and flat educated.
  • the spoiler 90, 95 with supports 100 are supported by the flat sides 45, 50 of the non-return valve 35.
  • spoiler 95, support 100 and check valve 35 are integrally formed.
  • the sealing surfaces 65, 70 are formed by those surface areas on the flat sides 45, 50, which surround the spoiler 90, 95.
  • the double pump 5 described above has at high flow rates a higher flow rate than comparable double pumps according to the prior art, as shown in the diagram Fig. 3 can be removed.
  • the delivery head H is shown as a function of the delivery flow Q of the previously described pump (solid curve 120).
  • the diagram also includes a corresponding curve 117 for a double pump according to the prior art (dashed curve).
  • the curves overlap, ie the pumps operate with equal effect. Only from a point 115, the pump curve 117 drops significantly for the double pump according to the prior art.
  • the double pump or non-return valve ensures, as the curve 120 shows, that the shape of the pump curve avoids this steep drop and compared to the pump curve 117, especially in the range of large flow rates and small heads, a higher flow rate, since the check valve also closes tight in this area and thus no or at least lower short-circuit currents occur.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

Die Erfindung betrifft eine Doppelpumpe mit den im Oberbegriff des Anspruchs 1 angegebenen Merkmalen.The invention relates to a double pump with the features specified in the preamble of claim 1.

Doppelpumpen zählen insbesondere als Heizungsumwälzpumpen zum Stand der Technik und dienen zur Sicherstellung der Pumpleistung auch bei Ausfall einer Pumpe. Bei Ausfall einer ursprünglich betriebenen ersten Pumpe kann die zweite Pumpe der Doppelpumpe zugeschaltet werden und die Pumpenfunktion übernehmen. An dem druckseitigen Ausgang der Doppelpumpe ist dabei eine Rückströmung des Fördermediums in die ausgefallene erste Kreiselpumpe und damit ein Kurzschlussstrom zu vermeiden. Zu diesem Zweck weisen Doppelpumpen regelmäßig eine Rückschlagklappe auf, welche den Ausgang der nicht aktiven Pumpe verschließt. Diese Rückschlagklappen sind üblicherweise strömungsgesteuert, d.h. sie werden durch die Anströmung des Fördermediums in ihre jeweilige Schließ- bzw. Offenstellung gesteuert und dort gehalten. Eine solche Doppelpumpe mit einer strömungsgesteuerten Rückschlagklappe wird unter der Typenbezeichnung MAGNA-UPE(D) 32-120F von der Firma Grundfos hergestellt.Double pumps are particularly state of the art as heating circulation pumps and serve to ensure the pumping capacity even in the event of a pump failure. In case of failure of an originally operated first pump, the second pump of the double pump can be switched on and take over the pump function. At the pressure-side outlet of the double pump, a return flow of the pumped medium into the failed first centrifugal pump and thus a short-circuit current is to be avoided. For this purpose, double pumps regularly have a non-return valve, which closes the output of the non-active pump. These check valves are usually flow controlled, i. They are controlled by the flow of the pumped medium in their respective closed or open position and held there. Such a double pump with a flow-controlled non-return valve is manufactured under the type name MAGNA-UPE (D) 32-120F from Grundfos.

Insbesondere bei hohen Förderströmen, wenn der Förderdruck vergleichsweise gering ist, verschließen strömungsgesteuerte Rückschlagklappen den jeweils anderen Ausgang der Doppelpumpe nicht vollständig. Der unzureichende Verschluss resultiert aus der bei hohen Förderströmen verringerten Druckdifferenz zwischen Druck- und Saugseite, welche zu einer geringeren Kraftbeaufschlagung der Rückschlagklap pe führt. Durch den unzureichenden Verschluss der Rückschlagklappe entstehen Kurzschlussströme, die die Förderleistung vermindern. Doch auch bei anderen Drehzahlen kann es aufgrund von Resonanzen oder anderen Effekten dazu kommen, dass die Rückschlagklappe nicht dicht schließt. Es wird daher in Betriebsanleitungen bekannter Doppelpumpen regelmäßig darauf hingewiesen, in welchen Drehzahlbereichen die Pumpe nicht betrieben werden sollte, um dies zu vermeiden.Especially at high flow rates, when the delivery pressure is comparatively low, flow-controlled check valves do not completely close the respective other output of the double pump. The insufficient closure results from the reduced pressure difference between the pressure and suction side at high flow rates, which leads to a lower force application of the non-return flap pe leads. The inadequate closure of the non-return valve results in short-circuit currents that reduce the flow rate. But even at other speeds, it may happen because of resonances or other effects that the check valve does not close tightly. It is therefore regularly noted in operating instructions known double pumps in which speed ranges the pump should not be operated to avoid this.

Aus US 2,017 , 033 zählt es zum Stand der Technik, zwei Hochdruckpumpen mittels eines Ventils so miteinander zu verbinden, dass jeweils die nicht druckbeaufschlagte Eingangsleitung selbsttätig verschlossen wird. Die dort verwendete Rückschlagklappe ist als ein im Ventilgehäuse angeordneter schwenkbarer Hebel mit zwei Ventilkörpern ausgebildet. Diese Konstruktion ist technisch aufwändig und funktioniert nur bei einem ausreichend hohen Druckniveau, wie dies bei Heizungsumwälzpumpen typischerweise nicht gegeben ist.Out US 2,017 . 033 It is part of the state of the art to connect two high-pressure pumps by means of a valve so that in each case the non-pressurized input line is automatically closed. The non-return valve used there is designed as a pivotable lever arranged in the valve housing with two valve bodies. This design is technically complex and only works at a sufficiently high pressure level, as is typically not the case with heating circulation pumps.

Es ist daher Aufgabe der Erfindung, eine Doppelpumpe, insbesondere die Rückschlagklappe einer Doppelpumpe so auszubilden, dass die Dichtfunktion insbesondere auch bei geringem Druck gewährleistet ist.It is therefore an object of the invention to form a double pump, in particular the non-return valve of a double pump so that the sealing function is ensured in particular even at low pressure.

Diese Aufgabe wird durch eine Doppelpumpegemäß Anspruch 1 gelöst. Vorteilhafte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen, der nachfolgenden Beschreibung und der Zeichnung.This object is achieved by a double pump according to claim 1. Advantageous developments of the invention will become apparent from the dependent claims, the following description and the drawings.

Die erfindungsgemäße Doppelpumpe weist zwei Pumpen auf, deren druckseitige Leitungen in einer gemeinsamen Ausgangsleitung münden. Ferner weist sie eine im Mündungsbereich der druckseitigen Leitungen angeordnete strömungsgesteuerte Rückschlagklappe auf, die bei Durchströmung einer ersten druckseitigen Leitung die andere, zwei te, druckseitige Leitung verschließt. Erfindungsgemäß weist die Rückschlagklappe der Doppelpumpe mindestens eine in Schließstellung in den Strömungspfad ragende und stromaufwärts gewandte Anströmfläche auf, die durch einen an der Rückschlagklappe angeordneten Spoiler gebildet ist. In dieser Schließstellung ist der Strömungspfad durch die erste druckseitige Leitung und die gemeinsame Ausgangsleitung gebildet. Auf eine derart orientierte Anströmfläche in Form eines Spoilers wirkt durch die Anströmung im Strömungspfad eine Kraft, welche schräg bis quer zur Haupströmungsrichtung des Strömungspfades gerichtet ist. Auf diese Weise wird die in ihrer Schließstellung befindliche Rückschlagklappe durch die Anströmung der Anströmfläche deutlich stärker in ihre Schließstellung zusätzlich kraftbeaufschlagt, nämlich durch die aus der Anströmung resultierende Kraft. Eine derart ausgebildete Anströmfläche erlaubt eine geeignete Anpassung der Anströmfläche an den jeweiligen Einsatzzweck bzw. Pumpentyp, da die Anströmfläche weitgehend unabhängig von den geometrischen Abmessungen der Rückschlagklappe ausgelegt werden kann.The double pump according to the invention has two pumps, the pressure-side lines open into a common output line. Furthermore, it has a flow-controlled non-return valve arranged in the mouth region of the pressure-side lines, which flow passage when flowing through a first pressure-side line the other, two te, pressure-side line closes. According to the invention, the non-return flap of the double pump has at least one in the closed position in the flow path projecting and upstream facing inflow surface, which is formed by a valve disposed on the non-return valve spoiler. In this closed position, the flow path is formed by the first pressure-side line and the common output line. On a thus oriented inflow surface in the form of a spoiler acts by the flow in the flow path, a force which is directed obliquely to transversely to the main flow direction of the flow path. In this way, the non-return valve located in its closed position by the flow of the inflow is much stronger in its closed position additionally subjected to force, namely by the force resulting from the flow. Such a trained inflow area allows a suitable adaptation of the inflow surface to the respective application or pump type, since the inflow surface can be designed largely independent of the geometric dimensions of the check valve.

Dies ist insbesondere bei hohen Förderströmen relevant, bei welchen Rückschlagklappen bekannter Doppelpumpen nur unzureichend schließen. Bei der erfindungsgemäßen Doppelpumpe kann die Anströmfläche aus der Anströmung im Strömungspfad auch bei hohen Förderströmen bzw. bei geringen Förderdrücken eine für den Rückschlagklappenverschluss ausreichende Schließkraft aufbringen. Damit lässt sich bei der Doppelpumpe gemäß dieser Erfindung ein wesentlich verbesserter Klappenverschluss und daher bei geringen Förderdrücken eine deutlich erhöhte Förderleistung erzielen. Eine mit der erfindungsgemäßen Rückschlagklappe ausgestattete Doppelpumpe kann somit über den gesamten Drehzahlbereich betrieben werden, ohne dass bestimmte Drehzahlbereiche wegen mangelhaft schließender Rückschlagklappe und damit schlechteren Wirkungsgrads der Pumpe nicht angefahren werden sollten. Gemäß der Erfindung ist bei der Doppelpumpe die Anströmfläche durch einen an der Rückschlagklappe angeordneten Spoiler gebildet.This is particularly relevant for high flow rates, in which check valves of known double pumps close inadequate. In the case of the double pump according to the invention, the inflow area from the inflow in the flow path can apply a closing force sufficient for the check flap closure even at high delivery flows or at low delivery pressures. Thus, in the double pump according to this invention, a significantly improved flap closure and therefore at low delivery pressures achieve a significantly increased delivery rate. A equipped with the non-return valve according to the invention double pump can thus be operated over the entire speed range without certain speed ranges should not be approached because of poorly closing check valve and thus poorer efficiency of the pump. According to the invention is in the double pump formed the inflow by a arranged on the non-return flap spoiler.

Bevorzugt weist bei der Doppelpumpe die Rückschlagklappe an ihren beiden voneinander abgewandten Flachseiten jeweils eine Anströmfläche auf. Dies ist insbesondere für Rückschlagklappen relevant, welche wechselseitig jeweils einen Ausgang einer Pumpe verschließen können und dazu zwei Schließstellungen aufweisen. Mit der Ausbildung jeweils einer Anströmfläche an den beiden voneinander abgewandten Flachseiten der Rückschlagklappe ist diese in jeder Schließstellung strömungskraftbeaufschlagbar.In the case of the double pump, the non-return flap preferably has an inflow surface at its two flat sides facing away from one another. This is particularly relevant for non-return valves, which can each mutually close an outlet of a pump and to have two closed positions. With the formation of each an inflow surface on the two facing away from each other flat sides of the non-return valve, it is strömungskraftbeaufschlagbar in each closed position.

Vorteilhaft sind bei der Doppelpumpe die Anströmflächen jeweils von einer Dichtfläche umgeben. Diese Ausgestaltung ist für die zuvor beschriebene Doppelpumpe besonders zweckmäßig. So kann die Rückschlagklappe in jeder Schließstellung mit ihrer Dichtfläche dicht an dem jeweiligen Ausgang einer Pumpe anliegen und daneben auch in jede ihrer Schließstellung durch Anströmung kraftbeaufschlagt werden. Die Anordnung der Dichtfläche erlaubt dabei eine gleichmäßige Kraftbeaufschlagung der Dichtfläche in Richtung auf eine Anlagefläche. Darüber hinaus steht der Anströmfläche bei einer derart ausgebildeten Dichtfläche nahezu die gesamte Flachseite der Klappe zur Verfügung, so dass die Dichtfläche bei der Auslegung und Ausgestaltung der Anströmfläche praktisch keine Einschränkung bildet.Advantageously, the inflow surfaces are each surrounded by a sealing surface in the double pump. This embodiment is particularly useful for the double pump described above. Thus, the check valve in each closed position with its sealing surface tightly against the respective output of a pump and also be subjected to force in each of its closed position by flow. The arrangement of the sealing surface allows a uniform application of force to the sealing surface in the direction of a contact surface. In addition, the inflow surface is in a sealing surface formed in this way almost the entire flat side of the flap available, so that the sealing surface in the design and design of the inflow surface forms virtually no restriction.

In einer bevorzugten Ausgestaltung ist die Anströmfläche einachsig gekrümmt, wobei zum einen die Krümmungsachse parallel zur Schwenkachse der Klappe angeordnet ist und zum anderen die gekrümmte Anströmfläche zum Strömungspfad hin konkav angeordnet ist. Besonders bevorzugt ist die Klappe derart gekrümmt, dass die Anströmfläche stromaufwärts mit einem nahezu glatten Übergang möglichst stetig in eine Flachseite der Rückschlagklappe übergeht. In einer derartigen Ausgestaltung lässt sich eine effiziente Kraftbeaufschlagung der Rückschlagklappe bei gleichzeitig äußerst geringem Strömungswiderstand erreichen.In a preferred embodiment, the inflow surface is uniaxially curved, wherein on the one hand the axis of curvature is arranged parallel to the pivot axis of the flap and on the other hand, the curved inflow surface is arranged concavely to the flow path. Particularly preferably, the flap is curved in such a way that the upstream surface merges with a nearly smooth transition as steadily as possible into a flat side of the non-return flap upstream. In such a Design can be an efficient application of force to the non-return valve at the same time achieve extremely low flow resistance.

Nachfolgend wird die Erfindung anhand eines in der Zeichnung dargestellten Ausführungsbeispiels beschrieben. Es zeigen:

Fig. 1
eine erfindungsgemäße Doppelpumpe im Schnitt längs der druckseitigen Leitungen der beiden Pumpen,
Fig. 2
die Rückschlagklappe der Doppelpumpe gemäß Fig. 1 in einer perspektivischen Darstellung und
Fig. 3
eine grafische Darstellung des Zusammenhangs von För-derhöhe und Förderstrom für die Doppelpumpe gemäß Fig. 1 und für eine Doppelpumpe gemäß dem Stand der Technik.
The invention will be described with reference to an embodiment shown in the drawing. Show it:
Fig. 1
a double pump according to the invention in section along the pressure-side lines of the two pumps,
Fig. 2
the non-return valve of the double pump according to Fig. 1 in a perspective view and
Fig. 3
a graphical representation of the relationship of delivery height and flow for the double pump according to Fig. 1 and for a double pump according to the prior art.

Bei der in Fig. 1 gezeigten Doppelpumpe 5 handelt es sich um eine Heizungsumwälzpumpe. Die Doppelpumpe 5 weist eine Eingangsleitung 7 auf, die zwei in einem gemeinsamen Gehäuse 8 angeordnete Kreiselpumpen 10, 15 speist. Dazu verzweigt die gemeinsame Eingangsleitung 7 in zwei Zuleitungen, die jeweils in einem Saugmund der beiden Pumpen 10, 15 münden (in der Zeichnung nicht dargestellt). Die beiden Saugmünder speisen je ein Laufrad 16, 17 der beiden Pumpen, aus denen die Förderflüssigkeit radial austritt und nachfolgend über zwei Schneckengehäuse 18, 19 zu zwei druckseitigen Leitungen 20, 25 der Pumpen 10, 15 gelangt. Diese beiden druckseitigen Leitungen 20, 25 münden in einem Mündungsbereich 27 in einer gemeinsamen Ausgangsleitung 30 der Doppelpumpe 5.At the in Fig. 1 shown double pump 5 is a heating circulation pump. The double pump 5 has an input line 7, the two in a common housing 8 arranged centrifugal pumps 10, 15 feeds. For this purpose, the common input line 7 branches into two supply lines, each of which opens into a suction mouth of the two pumps 10, 15 (not shown in the drawing). The two suction orifices each feed an impeller 16, 17 of the two pumps, from which the delivery fluid exits radially and subsequently via two screw housing 18, 19 to two pressure-side lines 20, 25 of the pumps 10, 15 passes. These two pressure-side lines 20, 25 open into an orifice region 27 in a common outlet line 30 of the double pump 5.

Im Mündungsbereich 27 beider Leitungen 20, 25 ist eine Rückschlagklappe 35 um eine Achse 40 schwenkbar angeordnet. Die Rückschlagklappe 35 kann dabei jeweils eine Leitung 20, 25 der beiden Pumpen 10, 15 verschließen. Daher ist die Rückschlagklappe 35 an beiden Flachseiten 45, 50 zur Anlage an jeweils einer Anlagefläche 55, 60 der beiden druckseitigen Leitungen 20, 25 ausgebildet. Dazu weist die Rückschlagklappe 35 an ihren beiden Flachseiten 45, 50 zwei Dichtflächen 65, 70 auf, welche mit den Anlageflächen 55, 60 einen dichten Verschluss der Leitung 20 oder der Leitung 25 ermöglichen. In dem dargestellten Ausführungsbeispiel sind die Dichtflächen 65, 70 durch die Flachseiten der Rückschlagklappe 35 gebildet. Grundsätzlich reicht es jedoch aus, die Dichtfläche nur im Anlagenbereich, also beispielsweise im Bereich eines umlaufenden Randes der Rückschlagklappe 35 auszubilden. In der in Fig. 1 dargestellen Stellung verschließt die Rückschlagklappe 35 die rechte druckseitige Leitung 25 der rechten Pumpe 15, so dass die linke druckseitige Leitung 20 der linken Pumpe 10 mit der gemeinsamen Ausgangsleitung 30 einen Strömungspfad 75 ausbildet.In the mouth region 27 of both lines 20, 25, a non-return valve 35 is pivotally mounted about an axis 40. The check valve 35 can in each case a line 20, 25 of the two pumps 10, 15 close. Therefore, the non-return valve 35 is formed on both flat sides 45, 50 for engagement with a respective contact surface 55, 60 of the two pressure-side lines 20, 25. For this purpose, the non-return valve 35 on its two flat sides 45, 50, two sealing surfaces 65, 70, which with the contact surfaces 55, 60 a dense Allow closure of the conduit 20 or the conduit 25. In the illustrated embodiment, the sealing surfaces 65, 70 are formed by the flat sides of the non-return valve 35. In principle, however, it is sufficient to design the sealing surface only in the system area, that is to say, for example, in the area of a peripheral edge of the non-return flap 35. In the in Fig. 1 illustrated position, the check valve 35 closes the right-hand pressure-side line 25 of the right pump 15, so that the left-hand pressure-side line 20 of the left pump 10 with the common output line 30 forms a flow path 75.

Die Rückschlagklappe 35 weist an ihren Flachseiten 45, 50 jeweils eine Anströmfläche 80, 85 auf, von denen diejenige Anströmfläche 80, welche dem Strömungspfad 75 nahe ist, in den Strömungspfad 75 hineinragt. In der in Fig. 1 dargestellten Stellung ist dies die linke Anströmfläche 80. Dabei ist die Anströmfläche 80 stromaufwärts, d. h. in Richtung zur linken Pumpe 10, gewandt. Daher wirkt bei Anströmung der Anströmfläche 80 im Strömungspfad 75 eine Kraft auf die Rückschlagklappe 35, welche schräg zur Hauptströmungsrichtung 88 und damit in die jeweilige Schließstellung gerichtet ist. Da die Anströmflächen 80, 85 mit einem deutlich größeren Winkel zur Hauptströmungsrichtung 88 des Strömungspfades 75 in den Strömungspfad 75 hineinragen, als die Flachseiten 45, 50 der Rückschlagklappen, resultieren aus der Anströmung der Anströmflächen 80, 85 erheblich größere Kräfte in die jeweilige Schließstellung verglichen mit bekannten Rückschlagklappen.The check valve 35 has on its flat sides 45, 50 in each case an inflow surface 80, 85, of which the inflow surface 80, which is close to the flow path 75, projects into the flow path 75. In the in Fig. 1 This is the left inflow surface 80. In this case, the inflow surface 80 upstream, ie in the direction of the left pump 10, turned. Therefore acts on flow of the inflow surface 80 in the flow path 75, a force on the check valve 35, which is directed obliquely to the main flow direction 88 and thus in the respective closed position. Since the inflow surfaces 80, 85 protrude into the flow path 75 at a significantly greater angle to the main flow direction 88 of the flow path 75 than the flat sides 45, 50 of the non-return flaps, the flow of the inflow surfaces 80, 85 results in considerably greater forces in the respective closed position compared with FIG known check valves.

Die Ausgestaltung der Anströmflächen 80, 85 kann Fig. 2 entnommen werden. Hier ist an den beiden Flachseiten 45, 50 jeweils einer von zwei Spoilern 90, 95 befestigt, deren von der Längsmittelebene der Rückschlagklappe 35 abgewandte Seiten 80, 85 die Anströmflächen 80, 85 bilden. Die Anströmflächen 80, 85 gehen an ihren der Schwenkachse 40 nahen Seiten stetig und glatt in die Flachseiten 45, 50 der Rückschlagklappe 35 über. Die Spoiler 90, 95 sind im Wesentlichen dünn und flächig ausgebildet. Dabei stützen sich die Spoiler 90, 95 mit Stützen 100 von den Flachseiten 45, 50 der Rückschlagklappe 35 ab. In der dargestellen Ausführungsform sind Spoiler 95, Stütze 100 und Rückschlagklappe 35 einteilig ausgebildet. Die Dichtflächen 65, 70 sind dabei durch diejenigen Flächenbereiche an den Flachseiten 45, 50 gebildet, die die Spoiler 90, 95 umgeben.The design of the inflow surfaces 80, 85 can Fig. 2 be removed. Here, one of two spoilers 90, 95 is attached to the two flat sides 45, 50, whose sides 80, 85 remote from the longitudinal center plane of the non-return flap 35 form the inflow surfaces 80, 85. The inflow surfaces 80, 85 pass steadily and smoothly into the flat sides 45, 50 of the non-return flap 35 at their sides close to the pivot axis 40. The spoilers 90, 95 are substantially thin and flat educated. In this case, the spoiler 90, 95 with supports 100 are supported by the flat sides 45, 50 of the non-return valve 35. In the dargestellen embodiment spoiler 95, support 100 and check valve 35 are integrally formed. The sealing surfaces 65, 70 are formed by those surface areas on the flat sides 45, 50, which surround the spoiler 90, 95.

Die zuvor beschriebene Doppelpumpe 5 weist bei hohen Förderströmen eine höhere Förderleistung als vergleichbare Doppelpumpen gemäß dem Stand der Technik auf, wie aus dem Diagramm gemäß Fig. 3 entnommen werden kann. In dem Diagramm ist die Förderhöhe H in Abhängigkeit vom Förderstrom Q der zuvor beschriebenen Pumpe dargestellt (durchgezogene Kurve 120). Zum Vergleich enthält das Diagramm zudem eine entsprechende Kurve 117 für eine Doppelpumpe gemäß dem Stand der Technik (gestrichelte Kurve). Im Bereich großer Förderhöhen, also im Diagramm im linken Bereich überdecken sich die Kurven, d. h. die Pumpen arbeiten gleichwirkend. Erst ab einem Punkt 115 fällt die Pumpenkurve 117 für die Doppelpumpe gemäß dem Stand der Technik deutlich ab. Dies resultiert daraus, dass mit zunehmendem Druckabfall bei steigender Fördermenge die auf die Klappe wirkende druckbedingte Schließkraft abnimmt, so dass dann bei über den Punkt 115 hinausgehenden zunehmenden Förderströmen und weiter abfallendem Druck die Klappe nicht mehr dicht schließt und ein Teil des Förderstroms durch die abgeschaltete Pumpe zurückfließt. Die erfindungsgemäße Doppelpumpe bzw. Rückschlagklappe sorgt hingegen, wie die Kurve 120 belegt, dafür, dass die Form der Pumpenkurve diesen steilen Abfall vermeidet und gegenüber der Pumpenkurve 117, insbesondere im Bereich großer Förderströme und kleiner Förderhöhen, eine höhere Förderleistung aufweist, da die Rückschlagklappe auch in diesem Bereich dicht schließt und somit keine oder zumindest geringere Kurzschlussströme entstehen.The double pump 5 described above has at high flow rates a higher flow rate than comparable double pumps according to the prior art, as shown in the diagram Fig. 3 can be removed. In the diagram, the delivery head H is shown as a function of the delivery flow Q of the previously described pump (solid curve 120). For comparison, the diagram also includes a corresponding curve 117 for a double pump according to the prior art (dashed curve). In the area of high delivery heights, ie in the diagram in the left area, the curves overlap, ie the pumps operate with equal effect. Only from a point 115, the pump curve 117 drops significantly for the double pump according to the prior art. This results from the fact that with increasing pressure drop with increasing flow rate, the pressure-related closing force acting on the flap decreases, so that then closes beyond the point 115 increasing flow rates and further decreasing pressure, the flap no longer tight and part of the flow through the pump off flowing back. The double pump or non-return valve according to the invention, however, ensures, as the curve 120 shows, that the shape of the pump curve avoids this steep drop and compared to the pump curve 117, especially in the range of large flow rates and small heads, a higher flow rate, since the check valve also closes tight in this area and thus no or at least lower short-circuit currents occur.

Das vorstehend anhand der Doppelpumpe 5 und der Rückschlagklappe 35 erläuterte Prinzip kann grundsätzlich auch an beliebigen anderen Leitungsverzweigungen eingesetzt werden, wenn die im Mündungsbereich der Leitungen eingesetzte Klappe entsprechend ausgebildet wird.The principle explained above with reference to the double pump 5 and the non-return valve 35 can in principle also be used on any other branch lines if the flap used in the mouth region of the lines is designed accordingly.

Die vorstehend beschriebene Klappenausbildung stellt jedoch nur eine von einer Vielzahl möglicher Ausbildungen dar, je nach Größe und Winkel der Anströmfläche kann die dadurch erzeugte zusätzliche Schließkraft den Erfordernissen entsprechend angepasst werden.However, the above-described flap training is only one of a variety of possible configurations, depending on the size and angle of the inflow, the additional closing force generated thereby can be adjusted according to requirements.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

55
Doppelpumpedouble pump
77
gemeinsame Eingangsleitungcommon input line
88th
Gehäusecasing
1010
Pumpepump
1515
Pumpepump
1616
LaufradWheel
1717
LaufradWheel
1818
Schneckengehäusesnail shell
1919
Schneckengehäusesnail shell
2020
druckseitige Leitungpressure-side line
2525
druckseitige Leitungpressure-side line
2727
Mündungsbereichmouth area
3030
gemeinsame Ausgangsleitungcommon output line
3535
Rückschlagklappecheck valve
4040
Achseaxis
4545
Klappenseiteflap side
5050
Klappenseiteflap side
5555
Anlageflächecontact surface
6060
Anlageflächecontact surface
6565
Dichtflächesealing surface
7070
Dichtflächesealing surface
7575
Strömungspfadflow path
8080
Anströmflächeinflow area
8585
Anströmflächeinflow area
8888
HauptströmungsrichtungMain flow direction
9090
Spoilerspoiler
9595
Spoilerspoiler
100100
Stützesupport
HH
Förderhöhehead
QQ
Förderstromflow
115115
Kurvenpunktcurve point
117117
Pumpenkurve einer Doppelpumpe nach dem Stand der TechnikPump curve of a double pump according to the prior art
120120
Pumpenkurve der Doppelpumpe 5Pump curve of the double pump 5

Claims (4)

  1. A double pump (5) with two pumps (10, 15), whose delivery-side conduits (20, 25) run out in a common outlet conduit (30), with a flow-controlled check valve (35) which is arranged in the run-out region (27), given a flow through a delivery-side conduit (20) closes the other delivery-side conduit (25) and comprises at least one onflow surface (80, 85) which projects into the flow path (75) in the closure position and which faces upstream, characterised in that the onflow surface (80, 85) is formed by a spoiler (90, 95) which is arranged on the check valve (35).
  2. A double pump (5) according to claim 1, characterised in that the check valve (35) in each case comprises an onflow surface (80, 85) at its two flat sides (45, 50) which are away from one another.
  3. A double pump (5) according to claim 1 or 2, characterised in that the onflow surfaces (80, 85) are surrounded in each case by a sealing surface (65, 70).
  4. A double pump (5) according to one of the claims 1 to 3, characterised in that the onflow surface (80, 85) is curved in a single-axis manner, wherein the curvature axis is arranged parallel to the pivot axis (40) of the check valve (35) and the curved onflow surface (80, 85) is arranged concavely towards the flow path (75).
EP08015575.7A 2008-09-04 2008-09-04 Double pump Active EP2161455B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08015575.7A EP2161455B1 (en) 2008-09-04 2008-09-04 Double pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08015575.7A EP2161455B1 (en) 2008-09-04 2008-09-04 Double pump

Publications (2)

Publication Number Publication Date
EP2161455A1 EP2161455A1 (en) 2010-03-10
EP2161455B1 true EP2161455B1 (en) 2018-05-30

Family

ID=40428187

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08015575.7A Active EP2161455B1 (en) 2008-09-04 2008-09-04 Double pump

Country Status (1)

Country Link
EP (1) EP2161455B1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010055841A1 (en) 2010-12-23 2012-06-28 Wilo Se Method for operating a double pump or multi-pump unit
DE102014006258A1 (en) * 2014-04-30 2015-11-05 Wilo Se Method for controlling a pump system and regulated pump system
DE102015016086A1 (en) * 2015-12-10 2017-06-29 Wilo Se double pump
JP2022187176A (en) 2021-06-07 2022-12-19 株式会社荏原製作所 pump casing
JP2022187178A (en) 2021-06-07 2022-12-19 株式会社荏原製作所 Discharge merging part, pump casing and pump device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1142593A (en) * 1956-02-08 1957-09-19 Guinard Pompes Improvement in centrifugal pumps with two directions of rotation

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2017033A (en) 1935-02-09 1935-10-08 Charlie L Mcguffin Manifold valve for slush pumps
DE1528649B2 (en) * 1966-07-21 1973-06-14 Loewe Pumpenfabnk GmbH, 3140 Lune bürg SWITCH-OVER FLAP FOR A PUMP UNIT
DE4330507C1 (en) * 1993-09-09 1994-10-06 Grundfos As Flap switchover device for the discharge side of a twin pump

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1142593A (en) * 1956-02-08 1957-09-19 Guinard Pompes Improvement in centrifugal pumps with two directions of rotation

Also Published As

Publication number Publication date
EP2161455A1 (en) 2010-03-10

Similar Documents

Publication Publication Date Title
EP2161455B1 (en) Double pump
DE1817430A1 (en) Regenerative compressor
EP3156659B1 (en) Pump unit and hydraulic system
EP3224483B1 (en) Centrifugal pump with guiding device
DE2939405A1 (en) CIRCULAR HYDRAULIC DEVICE
DE102013223282A1 (en) turbocharger
EP2647805B1 (en) Thermostatic valve for a combustion engine
DE102014107446B3 (en) butterfly valve
DE102009015184B4 (en) flap valve
DE102004052439A1 (en) Fuel pump and fuel supply system for an internal combustion engine of a motor vehicle with a fuel pump
DE102012203724A1 (en) Fuel conveying device for common-rail injection system in combustion engine, has flow path arranged in valve for hydraulic connection of shaft bearing of high pressure pump with return-flow pipe, where throttle is integrated into flow path
DE102007052644A1 (en) Windscreen cleaning system for windows of a motor vehicle
DE102019126035A1 (en) VALVE DEVICE
EP1606516B1 (en) Fuel pump
DE102005038217A1 (en) Turning direction independent pump wheel e.g. for pump, has wings which are flexible for direction of rotation of independent pump impeller with wings being tiltably arranged
AT413871B (en) DEVICE FOR REGULATING THE DELIVERY VOLUME OF ROTATION COMPRESSORS
EP2597337A2 (en) Hydraulic assembly
EP3179110B1 (en) Double pump
EP2587067A2 (en) Multiple coaxial pump
DE1503523A1 (en) Improvements to fans
DE102015118469A1 (en) valve unit
DE102008052455A1 (en) valve means
EP1612426B1 (en) Controlled, energy efficient multi stage centrifugal pump with high pressure stage
WO2016202711A1 (en) Turbocharger for a motor vehicle
DE102022117023A1 (en) REGENERATIVE PUMP AND PROCESS

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

17P Request for examination filed

Effective date: 20100625

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20170223

RIC1 Information provided on ipc code assigned before grant

Ipc: F04D 13/14 20060101ALI20171024BHEP

Ipc: F04D 15/00 20060101AFI20171024BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20171205

GRAJ Information related to disapproval of communication of intention to grant by the applicant or resumption of examination proceedings by the epo deleted

Free format text: ORIGINAL CODE: EPIDOSDIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

GRAR Information related to intention to grant a patent recorded

Free format text: ORIGINAL CODE: EPIDOSNIGR71

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

INTC Intention to grant announced (deleted)
AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

INTG Intention to grant announced

Effective date: 20180420

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1003885

Country of ref document: AT

Kind code of ref document: T

Effective date: 20180615

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502008016098

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20180530

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180830

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180530

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180530

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180530

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180530

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180530

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180830

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180530

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180530

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180530

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180530

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180530

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180530

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180530

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180530

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180530

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502008016098

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180530

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

26N No opposition filed

Effective date: 20190301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180530

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20180930

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180904

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180904

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180930

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180930

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180930

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 1003885

Country of ref document: AT

Kind code of ref document: T

Effective date: 20180904

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180530

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180904

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180530

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180530

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20080904

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180930

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502008016098

Country of ref document: DE

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20230920

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20230928

Year of fee payment: 16

Ref country code: DE

Payment date: 20230920

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20230927

Year of fee payment: 16