EP1126180A2 - Impeller for a centrifugal dish washer pump - Google Patents

Impeller for a centrifugal dish washer pump Download PDF

Info

Publication number
EP1126180A2
EP1126180A2 EP00126832A EP00126832A EP1126180A2 EP 1126180 A2 EP1126180 A2 EP 1126180A2 EP 00126832 A EP00126832 A EP 00126832A EP 00126832 A EP00126832 A EP 00126832A EP 1126180 A2 EP1126180 A2 EP 1126180A2
Authority
EP
European Patent Office
Prior art keywords
impeller
pump
blade cover
blade
cover
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP00126832A
Other languages
German (de)
French (fr)
Other versions
EP1126180B1 (en
EP1126180A3 (en
Inventor
Walter Assmann
Hans Joachim Hegemann
Ulrich Hettenhausen
Peter Dr. Rode
Hermann-Josef Theis
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.)
Miele und Cie KG
Original Assignee
Miele und Cie KG
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 Miele und Cie KG filed Critical Miele und Cie KG
Publication of EP1126180A2 publication Critical patent/EP1126180A2/en
Publication of EP1126180A3 publication Critical patent/EP1126180A3/en
Application granted granted Critical
Publication of EP1126180B1 publication Critical patent/EP1126180B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2205—Conventional flow pattern
    • F04D29/2222—Construction and assembly

Definitions

  • the object of the invention relates to a pump impeller for a centrifugal pump, in particular for a circulation pump which can be used in dishwashers or washing machines, which rotates in a pump housing with suction and pressure ports and formed with a plurality of moving blades and with a counter bearing ring of a mechanical seal is, the blades from the wheel hub to the wheel circumference of the wheel extend radially and on an upstream front blade cover and / or pump housing-side rear blade cover are arranged.
  • centrifugal pumps of radial design for water-bearing household appliances especially for Dishwashers known whose impellers on the pump housing side or on the inflow side, are open at the back or front. Closed impellers are also known, see FIG. for example DE 198 01 112 A1, in which the rear impeller cover completely removes the blades and the front cover of the blades except for the inlet cross-section covers.
  • the open impellers have the advantage that they are easier to manufacture. If necessary, the blade channels of the open impellers can also be subsequently machined well or also clearly visible for inspection purposes. In contrast, the open impellers compared to the closed impellers due to a poorer hydraulic Efficiency because of pressure differences between the front of the blade and The back of the blade causes considerable gap losses.
  • the invention has for its object to provide a pump impeller that is simple as well is inexpensive to manufacture, stable pump performance even with axial position tolerances distinguishes, and eliminates annoying running noises and ventilation problems are.
  • a pump impeller designated by (1) in Fig. 1 for a known and not shown Centrifugal pump, in particular for one in dishwashers or washing machines Circulation pump that can be used is, according to the invention, a semi-open impeller at the front and rear educated.
  • Such an impeller (1) can be installed in a pump housing provided with suction and pressure ports, as shown in DE 198 01 112 A1, for example.
  • the Pump shaft sealing in a manner known per se by means of a mechanical seal from a rubber sleeve arranged in the motor-side end shield of the pump housing with a fixed sliding ring made of sintered carbon material or the like and a counter bearing ring (2) made of ceramic material on the impeller (1).
  • the slide ring is supported under spring pressure the sealing surface of the ceramic counter bearing ring (2) perpendicular to the shaft.
  • the impeller (1) (Fig. 1 to 3) is provided with several blades (3), which are different from the Extend the impeller hub (4) radially towards the outer circumference of the impeller and between the blade covers (5, 6) of the impeller (1) are arranged.
  • the impeller (1) with the blade covers (5, 6) according to the invention is made in one piece, preferably in one piece, the initially mentioned semi-open construction is selected. According to this design, they cover both sides of the rotor blades (3) provided for the rotor blade covers (5, 6) (3) front and back only partially.
  • the one-piece impeller (1) is designed as an injection molded part, the ceramic counter bearing ring (2) is preferably cast in. According to the embodiment shown (see. in particular Fig. 2) is the ceramic counter bearing ring (2) with one in the impeller material immersed gradation (7) and positively and / or non-positively fixed in the impeller (1).
  • the step (7) is encapsulated by the impeller material.
  • the blades (3) end on the front blade cover (5) and covered by this in the upper area on a Blade outer circle diameter (A'-5).
  • the blade outer circle diameter (A'-5) is preferred smaller than the outer diameter (A-5) of the annular front blade cover (5) selected.
  • the outer diameter (A-6) of the rear blade cover (6) or the approximately equal inner diameter (1-5) of the front blade cover (5) lies approximately in the middle between the outer diameter (A-5) of the front blade cover (5) and the blade inner circle diameter (I'-6) the rear cover (6). This makes demoulding a two-part injection mold easy possible.
  • the impeller (1) promotes water / air mixtures or foam compared to known impellers with less annoying noise, d. H. relatively quiet. This is achieved due to the large bladed wheel hub, because this causes air bubbles to be drawn in on the upstream side do not shoot straight onto the rear bucket cover and make noises in the event of an impact generate, but in the area of the impeller hub (4) deflected by the blades (3) and be crushed by the blades. This process takes place inside the impeller (1) instead and is largely acoustically decoupled.
  • the half-open impeller (1) also advantageously vented, as compared to closed ones
  • Impellers are the volumes of the blade-free annular gap spaces between the impeller hub (4) and the pump housing or the front impeller cover (5) and the pump housing is reduced to less than half. By reducing the size of the annular gap spaces This means that less air accumulates, so that the pump is vented less is disabled.
  • the impeller (1) can be made in one piece because the outer diameter (A-6) of the rear impeller cover (6) equal to or slightly less than the inside diameter (l-5) of the front cover (5) is. If the mating ring bearing ceramic (2) is inserted into the impeller injection tool, this eliminates the need to mount the bearing separately.
  • the complete impeller (1) can be in one Work step.
  • the directly overmolded bearing ceramic also reduces the number of components achieved because a sealing sleeve and a brass bushing to be used separately can be omitted for the reception of the ceramic disc. Direct injection of the ceramic counter bearing ring (2) can of course also be used in a multi-part impeller.

Landscapes

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

Abstract

The pump impeller comprises impeller blades(3) extending radially from the hub towards the periphery, and installed on a front shroud on the inlet side and/or rear shroud on the pump casing side. The impeller is constructed semi-shrouded, and manufactured as an injection moulded part with a cast-in ceramic support bearing ring(2). The shrouds overlap the impeller blades on the front and rear sides only partially, with the front shroud(5) being in ring form, and the rear shroud(6) as a closed disc with an external diameter the same or smaller than the internal diameter of the front shroud.

Description

Der Gegenstand der Erfindung betrifft ein Pumpenlaufrad für eine Kreiselpumpe, insbesondere für eine in Geschirrspülmaschinen oder Waschmaschinen einsetzbare Umwälzpumpe, welches in einem mit Ansaug- und Druckstutzen versehenen Pumpengehäuse gegengelagert umläuft und mit mehreren Laufschaufeln sowie mit einem Gegenlagerring einer Gleitringdichtung ausgebildet ist, wobei sich die Laufschaufeln von der Radnabe zum Radumfang des Laufrades radial erstrecken und an einer anströmseitigen vorderen Laufschaufelabdeckung und/oder einer pumpengehäuseseitigen hinteren Laufschaufelabdeckung angeordnet sind.The object of the invention relates to a pump impeller for a centrifugal pump, in particular for a circulation pump which can be used in dishwashers or washing machines, which rotates in a pump housing with suction and pressure ports and formed with a plurality of moving blades and with a counter bearing ring of a mechanical seal is, the blades from the wheel hub to the wheel circumference of the wheel extend radially and on an upstream front blade cover and / or pump housing-side rear blade cover are arranged.

Es sind Kreiselpumpen radialer Bauart für wasserführende Haushaltgeräte, insbesondere für Geschirrspülmaschinen bekannt, deren Laufräder pumpengehäuseseitig oder anströmseitig, also hinten oder vorn offen sind. Ebenso sind geschlossene Laufräder bekannt, sh. beispielsweise DE 198 01 112 A1, bei denen die hintere Laufradabdeckung die Laufschaufeln vollständig und die vordere Abdeckung die Laufschaufeln bis auf den saugseitigen Einströmquerschnitt abdeckt. Die offenen Laufräder haben den Vorteil, daß sie einfacher zu fertigen sind. Ferner sind die Schaufelkanäle der offenen Laufräder, falls notwendig, nachträglich gut zu bearbeiten oder für Inspektionszwecke auch gut einsehbar. Demgegenüber zeichnen sich die offenen Laufräder gegenüber den geschlossenen Laufrädern durch einen schlechteren hydraulischen Wirkungsgrad aus, weil durch Druckdifferenzen zwischen Schaufelvorderseite und Schaufelrückseite erhebliche Spaltverluste entstehen.There are centrifugal pumps of radial design for water-bearing household appliances, especially for Dishwashers known whose impellers on the pump housing side or on the inflow side, are open at the back or front. Closed impellers are also known, see FIG. for example DE 198 01 112 A1, in which the rear impeller cover completely removes the blades and the front cover of the blades except for the inlet cross-section covers. The open impellers have the advantage that they are easier to manufacture. If necessary, the blade channels of the open impellers can also be subsequently machined well or also clearly visible for inspection purposes. In contrast, the open impellers compared to the closed impellers due to a poorer hydraulic Efficiency because of pressure differences between the front of the blade and The back of the blade causes considerable gap losses.

Im Vergleich hierzu weist ein geschlossenes Laufrad weniger Spaltverluste auf, da hinreichend ähnliche Druckverteilungen auf beiden Seiten des Laufrades vorliegen. Jedoch verändern auch hier axiale Lagetoleranzen des Laufrades die Leistungsabgabe erheblich, so dass Abhilfe zu schaffen ist. Ferner ist es beim bekannten Technikstand als nachteilig zu sehen, dass erhebliche Laufgeräusche der Pumpe bei Schaumbildung in der geförderten Flüssigkeit auftreten können, die als störend wahrgenommen werden. Auch Wirkungsgradverschlechterungen durch ungenügende Laufradentlüftungen können auftreten.In comparison, a closed impeller has fewer gap losses because it is sufficient there are similar pressure distributions on both sides of the impeller. However, change too Here axial position tolerances of the impeller significantly reduce the power output, so that remedy create is. Furthermore, it is to be seen as a disadvantage in the known state of the art that considerable Running noises of the pump occur when foaming occurs in the pumped liquid can be perceived as disturbing. Efficiency deterioration due to insufficient impeller ventilation can occur.

Um ferner bei offenen und geschlossenen Pumpenlaufrädern eine präzise Abdichtung nach außen hin zu erreichen, sind Gleitringdichtungen für die umlaufenden Pumpenwellen bekannt, wofür in einem dem Pumpenlaufrad rückseitig zugekehrten Lagerschild des Pumpengehäuses ein Gummibalg eingesetzt ist, an welchem ein axial dichtender Gleitring aus gesintertem Kohlewerkstoff oder dergl. anvulkanisiert oder auf andere Weise befestigt ist. Der Gleitring stützt sich unter Federdruck an einer senkrecht zur Welle stehende Dichtfläche eines aus Keramikmaterial gefertigten Gegenlagerringes ab, der in einer separat eingesetzten Messingbuchse oder dergl. des Pumpenlaufrades unter Zwischenlage einer Gummimanschette eingepresst ist. Die Aufnahme für den Gegenlagerring im Pumpenlaufrad muß dabei sehr genau gearbeitet sein, weil der Gegenlagerring erheblichen Schwingungs- und Wärmebelastungen ausgesetzt ist, die zu Undichtheiten der Dichtung führen können. Nachteilig ist der Gegenlagerring samt seinen ihn aufnehmenden Lagerteilen zeitraubend in separaten zusätzlichen Montagegängen mit dem Pumpenlaufrad zu verbinden. Auch hier soll die Erfindung Abhilfe schaffen.To ensure a precise seal with open and closed pump impellers mechanical seals are known for the rotating pump shafts, for what in a bearing plate of the pump housing facing the rear of the pump impeller a rubber bellows is used, on which an axially sealing slide ring made of sintered carbon material or the like is vulcanized or otherwise attached. The slide ring is supported under spring pressure on a sealing surface perpendicular to the shaft made of ceramic material manufactured counter bearing ring, which in a separately inserted brass bush or the like. of the pump impeller is pressed in with the interposition of a rubber sleeve. The recording for the counter bearing ring in the pump impeller must be worked very precisely because the counter bearing ring is exposed to considerable vibrations and heat, which too Leaks in the seal can cause. A disadvantage is the counter bearing ring together with it receiving bearing parts time consuming in separate additional assembly aisles with the Connect the impeller. The invention is also intended to remedy this.

Der Erfindung liegt die Aufgabe zugrunde, ein Pumpenlaufrad zu schaffen, das einfach sowie kostengünstig zu fertigen ist, sich durch eine stabile Pumpenleistung auch bei axialen Lagetoleranzen auszeichnet, und bei dem störende Laufgeräusche und Entlüftungsprobleme beseitigt sind.The invention has for its object to provide a pump impeller that is simple as well is inexpensive to manufacture, stable pump performance even with axial position tolerances distinguishes, and eliminates annoying running noises and ventilation problems are.

Ausgehend von einem Pumpenlaufrad der eingangs genannten Art wird diese Aufgabe erfindungsgemäß durch die im Patentanspruch 1 angegebenen Merkmale gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den nachfolgenden Unteransprüchen.Starting from a pump impeller of the type mentioned at the outset, this object is achieved according to the invention solved by the features specified in claim 1. Advantageous configurations and further developments of the invention result from the following subclaims.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen rein schematisch dargestellt und wird nachfolgend näher beschrieben. Es zeigt

Figur 1
ein Pumpenlaufrad einer Kreiselpumpe in der Vorderansicht (Anströmseite),
Figur 2
das Pumpenlaufrad in der Seitenansicht im Längsschnitt,
Fig. 3
das Pumpenlaufrad in der Rückansicht.
An embodiment of the invention is shown purely schematically in the drawings and is described in more detail below. It shows
Figure 1
a pump impeller of a centrifugal pump in the front view (upstream side),
Figure 2
the pump impeller in side view in longitudinal section,
Fig. 3
the pump impeller in the rear view.

Ein in Fig. 1 mit (1) bezeichnetes Pumpenlaufrad für eine an sich bekannte und nicht näher gezeigte Kreiselpumpe, insbesondere für eine in Geschirrspülmaschinen oder Waschmaschinen einsetzbare Umwälzpumpe ist erfindungsgemäß als vorne und hinten jeweils halboffenes Laufrad ausgebildet.A pump impeller designated by (1) in Fig. 1 for a known and not shown Centrifugal pump, in particular for one in dishwashers or washing machines Circulation pump that can be used is, according to the invention, a semi-open impeller at the front and rear educated.

Ein solches Laufrad (1) kann in einem mit Ansaug- und Druckstutzen versehenen Pumpengehäuse, wie beispielsweise in DE 198 01 112 A1 gezeigt, eingesetzt werden. Dabei erfolgt die Pumpenwellenabdichtung in an sich bekannter Weise mittels einer Gleitringdichtung, bestehend aus einer im motorseitigen Lagerschild des Pumpengehäuses angeordneten Gummimanschette mit festgesetztem Gleitring aus gesintertem Kohlewerkstoff oder dergl. und einem Gegenlagerring (2) aus Keramikmaterial am Laufrad (1). Der Gleitring stützt sich unter Federdruck an der senkrecht zur Welle stehenden Dichtfläche des Keramik- Gegenlagerringes (2) ab. Such an impeller (1) can be installed in a pump housing provided with suction and pressure ports, as shown in DE 198 01 112 A1, for example. The Pump shaft sealing in a manner known per se by means of a mechanical seal from a rubber sleeve arranged in the motor-side end shield of the pump housing with a fixed sliding ring made of sintered carbon material or the like and a counter bearing ring (2) made of ceramic material on the impeller (1). The slide ring is supported under spring pressure the sealing surface of the ceramic counter bearing ring (2) perpendicular to the shaft.

Das Laufrad (1) (Fig. 1 bis 3) ist mit mehreren Laufschaufeln (3) versehen, welche sich von der Laufradnabe (4) zum Laufradaußenumfang hin radial erstrecken und zwischen Laufschaufelabdeckungen (5, 6) des Laufrades (1) angeordnet sind. Das Laufrad (1) mit den Laufschaufelabdeckungen (5, 6) ist erfindungsgemäß einteilig, vorzugsweise einstückig gefertigt, wobei die anfangs erwähnte halboffene Bauweise gewählt ist. Nach dieser Bauweise decken die beiderseits der Laufschaufeln (3) vorgesehenen Laufschaufelabdeckungen (5, 6) die Laufschaufeln (3) vorder- und rückseitig nur teilweise ab.The impeller (1) (Fig. 1 to 3) is provided with several blades (3), which are different from the Extend the impeller hub (4) radially towards the outer circumference of the impeller and between the blade covers (5, 6) of the impeller (1) are arranged. The impeller (1) with the blade covers (5, 6) according to the invention is made in one piece, preferably in one piece, the initially mentioned semi-open construction is selected. According to this design, they cover both sides of the rotor blades (3) provided for the rotor blade covers (5, 6) (3) front and back only partially.

Das einteilige Laufrad (1) ist als Spritzgußteil ausgebildet, wobei der Keramik-Gegenlagerring (2) vorzugsweise mit eingegossen ist. Gemäß dem gezeigten Ausführungsbeispiel (sh. insbesondere Fig. 2) ist der Keramik-Gegenlagerring (2) dafür mit einer in das Laufradmaterial eintauchenden Abstufung (7) versehen und form- und/oder kraftschlüssig im Laufrad (1) festgesetzt. Dabei ist die Abstufung (7) vom Laufradmaterial umgossen.The one-piece impeller (1) is designed as an injection molded part, the ceramic counter bearing ring (2) is preferably cast in. According to the embodiment shown (see. in particular Fig. 2) is the ceramic counter bearing ring (2) with one in the impeller material immersed gradation (7) and positively and / or non-positively fixed in the impeller (1). The step (7) is encapsulated by the impeller material.

Zur Herstellung des Kunststoff-Laufrades (1) genügt ein Spritzgusswerkzeug in einfacher zweiteiliger Schieber-Bauart. Dies gelingt bei dem erfindungsgemäß halboffenen Laufrad (1) dadurch, dass die vordere oder anströmseitige Laufschaufelabdeckung (5) kreisringförmig und die hintere den Gegenlagerring (2) tragende Laufschaufelabdeckung (6) als geschlossene Scheibe mit einem Außendurchmesser (A-6) ausgebildet ist, der gleich oder kleiner als der Innendurchmesser (l-5) der vorderen Laufschaufelabdeckung (5) ist. Dabei beginnen die an der hinteren Laufschaufelabdeckung (6) angeformten Laufschaufeln (3) an der Laufradnabe (4) mit dem Keramik-Gegenlagerring (2) auf einem frei im Ansaugbereich (S) des Laufrades (1) liegenden Schaufel-Innenkreisdurchmesser (1'-6) und bleiben unabgedeckt bis zum Innendurchmesser (l-5) der vorderen Laufschaufelabdeckung (5). Die Laufschaufeln (3) enden auf der vorderen Laufschaufelabdeckung (5) und von dieser im oberen Bereich verdeckt auf einem Schaufel-Außenkreisdurchmesser (A'-5). Der Schaufel-Außenkreisdurchmesser (A'-5) ist vorzugsweise kleiner als der Außendurchmesser (A-5) der kreisringförmigen vorderen Laufschaufelabdeckung (5) gewählt. Der Außendurchmesser (A-6) der hinteren Laufschaufelabdeckung (6) bzw. der annähernd gleich große Innendurchmesser (1-5) der vorderen Laufschaufelabdeckung (5) liegt dabei annähernd in der Mitte zwischen dem Außendurchmesser (A-5) der vorderen Laufschaufelabdeckung (5) und dem Schaufel-Innenkreisdurchmesser (I'-6) der hinteren Abdeckung (6). Somit ist die Entformung eines zweiteiligen Spritzwerkzeuges einfach möglich.To manufacture the plastic impeller (1), an injection mold in a simple two-part is sufficient Slider design. In the half-open impeller (1) according to the invention, this is achieved by that the front or upstream blade cover (5) is annular and the rear blade cover (6) carrying the counter bearing ring (2) as a closed disc is formed with an outer diameter (A-6) which is equal to or smaller than the inner diameter (l-5) of the front blade cover (5). The start at the rear Blade cover (6) molded blades (3) on the impeller hub (4) with the Ceramic counter bearing ring (2) on a free lying in the suction area (S) of the impeller (1) Blade inner circle diameter (1'-6) and remain uncovered up to the inner diameter (l-5) of the front blade cover (5). The blades (3) end on the front blade cover (5) and covered by this in the upper area on a Blade outer circle diameter (A'-5). The blade outer circle diameter (A'-5) is preferred smaller than the outer diameter (A-5) of the annular front blade cover (5) selected. The outer diameter (A-6) of the rear blade cover (6) or the approximately equal inner diameter (1-5) of the front blade cover (5) lies approximately in the middle between the outer diameter (A-5) of the front blade cover (5) and the blade inner circle diameter (I'-6) the rear cover (6). This makes demoulding a two-part injection mold easy possible.

Die vorbeschriebene erfindungsgemäße Formgebung des in einem Spritzvorgang komplett zu fertigenden halboffenen Pumpenlaufrades (1) erzielt den Vorteil, dass sich axiale Lagetoleranzen des Laufrades (1) nicht auf die abgegebene Pumpenleistung auswirken können. Wird von der Tatsache ausgegangen, dass die Breite eines Leckwasserspaltes zwischen den offenen Schaufeln und den benachbarten nicht gezeigten Pumpengehäusewandungen die Pumpenleistung beeinflusst, so tritt eine negative Beeinflussung deshalb nicht auf, weil beim Verschieben des beidseitig halboffenen Laufrades (1) der sich auf der einen Seite vergrößernde Leckwasserspalt auf der gegenüber liegenden Seite im offenen Schaufelbereich entsprechend verkleinert. Bei den gewählten Durchmesserverhältnissen der Laufschaufelabdeckungen(5, 6) heben sich die Effekte (Druckverteilungen usw.) gegenseitig auf, so dass die Pumpenleistung zumindest konstant bleibt. In Versuchen hat sich gezeigt, dass gegenüber den bekannten, geschlossenen Laufrädern (DE 198 01 112 A1) sogar Wirkungsgradverbesserungen auftreten.The above-described shaping of the completely in one injection process Manufacturing semi-open pump impeller (1) has the advantage that there are axial position tolerances of the impeller (1) cannot affect the pump output. Becomes based on the fact that the width of a leakage gap between the open Buckets and the adjacent pump housing walls, not shown, the pump performance influenced, so a negative influence does not occur because when moving of the impeller (1), which is half-open on both sides, and enlarges on one side Leakage water gap on the opposite side in the open blade area accordingly downsized. With the selected diameter ratios of the blade covers (5, 6) the effects (pressure distributions etc.) cancel each other out, so that the pump performance remains at least constant. Experiments have shown that compared to the known, closed Impellers (DE 198 01 112 A1) even improve efficiency.

Darüber hinaus fördert das Laufrad (1) Wasser/Luftgemische bzw. Schaum im Vergleich zu bekannten Klaufrädern mit weniger störenden Geräuschen, d. h. relativ leise. Erreicht wird dies durch die große beschaufelte Radnabe, weil dadurch anströmseitig angesaugte Luftblasen nicht direkt geradlinig auf die hintere Schaufelabdeckung einschießen und beim Aufprall Geräusche erzeugen, sondern im Bereich der Laufradnabe (4) von den Laufschaufeln (3) umgelenkt und durch die Schaufeln zerkleinert werden. Dieser Vorgang findet innerhalb des Laufrades (1) statt und ist damit akustisch weitgehend entkoppelt.In addition, the impeller (1) promotes water / air mixtures or foam compared to known impellers with less annoying noise, d. H. relatively quiet. This is achieved due to the large bladed wheel hub, because this causes air bubbles to be drawn in on the upstream side do not shoot straight onto the rear bucket cover and make noises in the event of an impact generate, but in the area of the impeller hub (4) deflected by the blades (3) and be crushed by the blades. This process takes place inside the impeller (1) instead and is largely acoustically decoupled.

Ebenso entlüftet das halboffene Laufrad (1) vorteilhaft, denn im Vergleich zu geschlossenen Laufrädern sind die Volumina der schaufellosen Ringspalträume zwischen der Laufradnabe (4) und dem anfangs erwähnten Pumpengehäuse bzw. der vorderen Laufradabdeckung (5) und dem Pumpengehäuse auf weniger als die Hälfte reduziert. Durch die Verkleinerung der Ringspalträume sammelt sich somit weniger Luft an, so dass ein Entlüften der Pumpe weniger stark behindert ist.The half-open impeller (1) also advantageously vented, as compared to closed ones Impellers are the volumes of the blade-free annular gap spaces between the impeller hub (4) and the pump housing or the front impeller cover (5) and the pump housing is reduced to less than half. By reducing the size of the annular gap spaces This means that less air accumulates, so that the pump is vented less is disabled.

Das Laufrad (1) läßt sich einteilig fertigen, weil der Außendurchmesser (A-6) der hinteren Laufradabdeckung (6) gleich oder etwas kleiner als der Innendurchmesser (l-5) der vorderen Abdeckung (5) ist. Wird die Gegenring-Lagerkeramik (2) mit in das Laufrad-Spritzwerkzeug eingesetzt, so entfällt das separate Montieren des Lagers. Das komplette Laufrad (1) kann in einem Arbeitsgang gefertigt werden. Ebenfalls wird durch die direktumspritzte Lagerkeramik eine Bauteilereduzierung erreicht, da eine Dichtmanschette und eine separat einzusetzende Messingbuchse für die Aufnahme der Keramikscheibe entfallen können. Das Direkteinspritzen des Keramik-Gegenlagerringes (2) ist selbstverständlich auch anwendbar in einem mehrteiligen Laufrad.The impeller (1) can be made in one piece because the outer diameter (A-6) of the rear impeller cover (6) equal to or slightly less than the inside diameter (l-5) of the front cover (5) is. If the mating ring bearing ceramic (2) is inserted into the impeller injection tool, this eliminates the need to mount the bearing separately. The complete impeller (1) can be in one Work step. The directly overmolded bearing ceramic also reduces the number of components achieved because a sealing sleeve and a brass bushing to be used separately can be omitted for the reception of the ceramic disc. Direct injection of the ceramic counter bearing ring (2) can of course also be used in a multi-part impeller.

Claims (7)

Pumpenlaufrad für eine Kreiselpumpe, insbesondere für eine in Geschirrspülmaschinen oder Waschmaschinen einsetzbare Umwälzpumpe, welches in einem mit Ansaug- und Druckstutzen versehenen Pumpengehäuse gegengelagert umläuft und mit mehreren Laufschaufeln sowie mit einem Gegenlagerring einer Gleitringdichtung ausgebildet ist, wobei sich die Laufschaufeln von der Radnabe zum Radumfang des Laufrades radial erstrecken und an einer anströmseitigen vorderen Laufschaufelabdeckung und/oder einer pumpengehäuseseitigen hinteren Laufschaufelabdeckung angeordnet sind,
dadurch gekennzeichnet,
dass das Laufrad (1) mit den Laufschaufelabdeckungen (5, 6) halboffen gestaltet ausgebildet ist.Pump impeller for a centrifugal pump, in particular for a circulation pump that can be used in dishwashers or washing machines, which rotates in a counter-rotating manner in a pump housing provided with suction and pressure ports and is designed with a plurality of moving blades and with a counter bearing ring of a mechanical seal, the moving blades extending from the wheel hub to the wheel circumference of the Radially extend impeller and are arranged on an upstream front blade cover and / or a pump housing-side rear blade cover,
characterized,
that the impeller (1) with the blade covers (5, 6) is designed to be semi-open. Pumpenlaufrad nach Anspruch 1,
dadurch gekennzeichnet,
dass das Laufrad (1) als Spritzgussteil einteilig mit ggf. eingegossenem Keramik-Gegenlagerring (2) gefertigt ist.Pump impeller according to claim 1,
characterized,
that the impeller (1) is made in one piece as an injection molded part with a possibly cast-in ceramic counter bearing ring (2). Pumpenlaufrad nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
dass die Laufschaufelabdeckungen (5,6) die Laufschaufeln (3) vorder- sowie rückseitig nur teilweise überdecken, wobei die vordere Laufschaufelabdeckung (5) kreisringförmig und die hintere Laufschaufelabdeckung (6) als geschlossene Scheibe mit einem Außendurchmesser (A-6) ausgebildet ist, welcher gleich oder kleiner als der Innendurchmesser (l-5) der vorderen Laufschaufelabdeckung (5) ist.Pump impeller according to claim 1 or 2,
characterized,
that the rotor blade covers (5, 6) only partially cover the rotor blades (3) on the front and rear, the front rotor blade cover (5) being circular and the rear rotor blade cover (6) being a closed disc with an outer diameter (A-6), which is equal to or smaller than the inner diameter (1-5) of the front blade cover (5). Pumpenlaufrad nach einem oder mehreren der Ansprüche 1 bis 3,
dadurch gekennzeichnet,
dass die mit der hinteren Laufschaufelabdeckung (6) verbundenen Laufschaufeln (3) vor der Laufradnabe (4) auf einem Schaufel-Innenkreisdurchmesser (l'-6) beginnen und auf der vorderen Laufschaufelabdeckung (5) auf einem Schaufel-Außenkreisdurchmesser (A'-5) enden, der vorzugsweise kleiner als der Außendurchmesser (A-5) der kreisringförmigen vorderen Laufschaufelabdeckung (5) gewählt ist.Pump impeller according to one or more of claims 1 to 3,
characterized,
that the blades (3) connected to the rear blade cover (6) start in front of the impeller hub (4) on a blade inner circle diameter (l'-6) and on the front blade cover (5) on a blade outer circle diameter (A'-5 ) end, which is preferably selected to be smaller than the outer diameter (A-5) of the annular front blade cover (5). Pumpenlaufrad nach einem oder mehreren der Ansprüche 1 bis 4,
dadurch gekennzeichnet,
dass der Außendurchmesser (A-6) der hinteren Laufschaufelabdeckung (6) bzw. der annähernd gleich große Innendurchmesser (l-5) der vorderen Laufschaufelabdeckung (5) vorzugsweise in der Mitte zwischen dem Außendurchmesser (A-5) der anströmseitigen Laufschaufelabdeckung (5) und dem Schaufel-Innenkreisdurchmesser (1'-6) liegt.Pump impeller according to one or more of claims 1 to 4,
characterized,
that the outer diameter (A-6) of the rear blade cover (6) or the approximately equal inner diameter (I-5) of the front blade cover (5) is preferably in the middle between the outer diameter (A-5) of the upstream blade cover (5) and the blade inner circle diameter (1'-6). Pumpenlaufrad nach einem oder mehreren der Ansprüche 1 bis 5,
dadurch gekennzeichnet,
dass der Keramik-Gegenlagerring (2) form- und/oder kraftschlüssig im Laufrad (1) festgesetzt istPump impeller according to one or more of claims 1 to 5,
characterized,
that the ceramic counter bearing ring (2) is positively and / or non-positively fixed in the impeller (1) Pumpenlaufrad nach einem oder mehreren der Ansprüche 1 bis 6,
dadurch gekennzeichnet,
dass der Keramik-Gegenlagerring (2) mit einer Abstufung (7) versehen ist, die vom Laufradmaterial umgossen ist.Pump impeller according to one or more of claims 1 to 6,
characterized,
that the ceramic counter bearing ring (2) is provided with a step (7) which is encapsulated by the impeller material.
EP00126832A 2000-02-16 2000-12-07 Impeller for a centrifugal dish washer pump Expired - Lifetime EP1126180B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10006983A DE10006983A1 (en) 2000-02-16 2000-02-16 Pump impeller for a centrifugal pump, in particular for a circulation pump that can be used in dishwashers or washing machines
DE10006983 2000-02-16

Publications (3)

Publication Number Publication Date
EP1126180A2 true EP1126180A2 (en) 2001-08-22
EP1126180A3 EP1126180A3 (en) 2002-08-14
EP1126180B1 EP1126180B1 (en) 2005-03-02

Family

ID=7631148

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00126832A Expired - Lifetime EP1126180B1 (en) 2000-02-16 2000-12-07 Impeller for a centrifugal dish washer pump

Country Status (4)

Country Link
EP (1) EP1126180B1 (en)
AT (1) ATE290169T1 (en)
DE (2) DE10006983A1 (en)
ES (1) ES2234504T3 (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004015274A3 (en) * 2002-08-13 2004-07-01 Litens Automotive Internal combustion engine combination with direct camshaft drive coolant pump
US7047914B2 (en) 2001-02-15 2006-05-23 Litens Automotive Internal combustion engine combination with direct camshaft driven coolant pump
WO2011148396A1 (en) * 2010-05-28 2011-12-01 Coplast Srl Cooling fan for a rotary machine technical field of application of the invention
WO2011148398A1 (en) * 2010-05-28 2011-12-01 Coplast Srl Cooling fan for a rotary machine
WO2011148397A1 (en) * 2010-05-28 2011-12-01 Coplast Srl Cooling fan for a rotary machine
ITPD20100386A1 (en) * 2010-12-21 2012-06-22 Unox Spa FAN PERFECTED OF CENTRIFUGAL FAN, IN PARTICULAR INTENDED FOR COOKING OVENS OF THE CONVECTION TYPE AND METHOD OF MANUFACTURE OF SUCH FAN
CN102562650A (en) * 2010-12-08 2012-07-11 湖北省天门泵业有限公司 Semi-closed impeller of pump
CN104141632A (en) * 2014-07-25 2014-11-12 吉首长潭泵业有限公司 Abrasion-resistant alloy mortar pump impeller and manufacturing method thereof
CN105275834A (en) * 2015-10-27 2016-01-27 上海华鼓鼓风机有限公司 Three-dimensional flow centrifugal blower with low-speed multistage vertical split cylinder structure
US10349810B2 (en) 2017-08-08 2019-07-16 Haier Us Appliance Solutions, Inc. Pump assembly for a dishwashing appliance
US10349809B2 (en) 2017-08-08 2019-07-16 Haier Us Appliance Solutions, Inc. Pump assembly for a dishwashing appliance
CN116221149A (en) * 2023-03-20 2023-06-06 青岛科技大学 A centrifugal compressor structure that suppresses condensation of working fluid at the inlet and expands the stable operation range

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005031589A1 (en) * 2005-07-06 2007-01-11 Schaeffler Kg Wasserpumpenflügelrad
CN116075640A (en) * 2020-09-14 2023-05-05 株式会社易威奇 Impellers and pumps with impellers

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19801112A1 (en) 1997-01-17 1998-07-23 Miele & Cie Slide ring seal between pump impeller wheel and housing

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3079866A (en) * 1959-07-16 1963-03-05 Texaco Inc Modified centrifugal pump
US3354529A (en) * 1963-07-29 1967-11-28 Ford Motor Co Impeller making
DE3611910A1 (en) * 1986-04-09 1987-10-15 Schaeffler Waelzlager Kg IMPELLER FOR A RADIAL PUMP
DE3706770A1 (en) * 1987-03-03 1988-09-15 Licentia Gmbh Centrifugal pump, in particular for dish-washing machines
DE3821352C1 (en) * 1988-06-24 1989-11-02 Goetze Ag, 5093 Burscheid, De
DE19530195A1 (en) * 1995-08-17 1997-02-20 Tuchenhagen Otto Gmbh Centrifugal pump impeller of radial design

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19801112A1 (en) 1997-01-17 1998-07-23 Miele & Cie Slide ring seal between pump impeller wheel and housing

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7047914B2 (en) 2001-02-15 2006-05-23 Litens Automotive Internal combustion engine combination with direct camshaft driven coolant pump
WO2004015274A3 (en) * 2002-08-13 2004-07-01 Litens Automotive Internal combustion engine combination with direct camshaft drive coolant pump
WO2011148396A1 (en) * 2010-05-28 2011-12-01 Coplast Srl Cooling fan for a rotary machine technical field of application of the invention
WO2011148398A1 (en) * 2010-05-28 2011-12-01 Coplast Srl Cooling fan for a rotary machine
WO2011148397A1 (en) * 2010-05-28 2011-12-01 Coplast Srl Cooling fan for a rotary machine
CN102562650A (en) * 2010-12-08 2012-07-11 湖北省天门泵业有限公司 Semi-closed impeller of pump
ITPD20100386A1 (en) * 2010-12-21 2012-06-22 Unox Spa FAN PERFECTED OF CENTRIFUGAL FAN, IN PARTICULAR INTENDED FOR COOKING OVENS OF THE CONVECTION TYPE AND METHOD OF MANUFACTURE OF SUCH FAN
CN104141632A (en) * 2014-07-25 2014-11-12 吉首长潭泵业有限公司 Abrasion-resistant alloy mortar pump impeller and manufacturing method thereof
CN105275834A (en) * 2015-10-27 2016-01-27 上海华鼓鼓风机有限公司 Three-dimensional flow centrifugal blower with low-speed multistage vertical split cylinder structure
US10349810B2 (en) 2017-08-08 2019-07-16 Haier Us Appliance Solutions, Inc. Pump assembly for a dishwashing appliance
US10349809B2 (en) 2017-08-08 2019-07-16 Haier Us Appliance Solutions, Inc. Pump assembly for a dishwashing appliance
CN116221149A (en) * 2023-03-20 2023-06-06 青岛科技大学 A centrifugal compressor structure that suppresses condensation of working fluid at the inlet and expands the stable operation range

Also Published As

Publication number Publication date
EP1126180B1 (en) 2005-03-02
DE50009642D1 (en) 2005-04-07
ATE290169T1 (en) 2005-03-15
EP1126180A3 (en) 2002-08-14
ES2234504T3 (en) 2005-07-01
DE10006983A1 (en) 2001-08-23

Similar Documents

Publication Publication Date Title
EP1126180B1 (en) Impeller for a centrifugal dish washer pump
EP2211444B1 (en) Electric motor with cooling ventilator effect
EP1767786B1 (en) Submersible pump assembly
EP1768233B1 (en) Airgap sleeve
DE69518815T2 (en) Lateral flow pump
EP1552161B1 (en) Impeller for a pump
DE102009052856B3 (en) Pump i.e. screw pump, has magnetic clutch provided with rotor shaft that is rotatably supported by pump housing, and suction chamber and slit pot connected with each other over line by fluid
WO2009092711A1 (en) Impeller for a pump
EP2971792B1 (en) Housing for a radial fan of an extractor hood
DE102011013677B4 (en) fan
EP1767787B1 (en) Submersible pump assembly
DE69414344T2 (en) Lateral flow pump
EP1081385A1 (en) Delivery pump
DE10019819A1 (en) Pump housing esp. for circulation pump for household machines consists of separate upper and lower sections with intermediate sealing ring loaded in radial direction
EP1053402B1 (en) Centrifugal pump impeller having a radial structure
WO1997007338A1 (en) Radial-construction centrifugal pump impeller
DE102011007453A1 (en) Controllable coolant pump for use in water-cooled internal combustion engine of car, has sealing element engaged with corresponding annular grooves of lid and housing with axial clearance in layer-fixed manner for sealing gap
WO2022128011A1 (en) Fan and volute for a fan
DE19748448C2 (en) Peripheral pump
EP1451473B1 (en) Impeller for a side channel pump
DE19925112A1 (en) Hand-held chain saw etc. has cover plate to act as partial seal of gap sector to separate cooling air flow and combustion air flow
WO2002095236A1 (en) Delivery pump
DE4128535A1 (en) Centrifugal pump esp. for motor vehicle windscreen washer - has transition region of constant radius between water inlet and pumping chamber closed by rubber moulding
DE10212505A1 (en) Side channel pump for use in vehicle fuel tank has electric motor driving rotor sandwiched between two fixed housing parts with vanes in working chambers and labyrinth seals at rim
DE20301052U1 (en) Centrifugal pump with magnetic drive has casing connected to motor with shaft surrounded by bearing with helical fluid channel

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: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

RIC1 Information provided on ipc code assigned before grant

Free format text: 7F 04D 29/22 A, 7F 04D 29/10 B, 7A 47L 15/42 B, 7D 06F 39/08 B

17P Request for examination filed

Effective date: 20021106

AKX Designation fees paid

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: MIELE & CIE. KG

17Q First examination report despatched

Effective date: 20040415

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

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

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: 20050302

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: 20050302

Ref country code: IE

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: 20050302

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: 20050302

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: IE

Ref legal event code: FG4D

Free format text: GERMAN

REF Corresponds to:

Ref document number: 50009642

Country of ref document: DE

Date of ref document: 20050407

Kind code of ref document: P

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

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: 20050602

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: 20050602

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2234504

Country of ref document: ES

Kind code of ref document: T3

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20050616

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: 20050803

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

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

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: 20051207

Ref country code: AT

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

Effective date: 20051207

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: 20051231

Ref country code: BE

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

Effective date: 20051231

Ref country code: MC

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

Effective date: 20051231

Ref country code: LI

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

Effective date: 20051231

Ref country code: CH

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

Effective date: 20051231

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

26N No opposition filed

Effective date: 20051205

ET Fr: translation filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: GB

Ref legal event code: 746

Effective date: 20061019

BERE Be: lapsed

Owner name: MIELE & CIE. K.G.

Effective date: 20051231

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

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: 20050602

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

Ref country code: IT

Payment date: 20121220

Year of fee payment: 13

Ref country code: GB

Payment date: 20121218

Year of fee payment: 13

Ref country code: ES

Payment date: 20121217

Year of fee payment: 13

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

Ref country code: FR

Payment date: 20130123

Year of fee payment: 13

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20131207

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20140829

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

Ref country code: GB

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

Effective date: 20131207

Ref country code: FR

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

Effective date: 20131231

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

Ref country code: DE

Payment date: 20141231

Year of fee payment: 15

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20150429

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

Ref country code: ES

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

Effective date: 20131208

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

Ref country code: IT

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

Effective date: 20131231

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

Ref country code: IT

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

Effective date: 20131207

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50009642

Country of ref document: DE

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

Ref country code: DE

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

Effective date: 20160701