EP0694698B1 - Centrifugal pump - Google Patents
Centrifugal pump Download PDFInfo
- Publication number
- EP0694698B1 EP0694698B1 EP95107775A EP95107775A EP0694698B1 EP 0694698 B1 EP0694698 B1 EP 0694698B1 EP 95107775 A EP95107775 A EP 95107775A EP 95107775 A EP95107775 A EP 95107775A EP 0694698 B1 EP0694698 B1 EP 0694698B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- flow
- impeller
- outlet
- pressure chamber
- 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.)
- Expired - Lifetime
Links
- 241001481828 Glyptocephalus cynoglossus Species 0.000 claims 1
- 239000012530 fluid Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
- F04D29/48—Fluid-guiding means, e.g. diffusers adjustable for unidirectional fluid flow in reversible pumps
- F04D29/486—Fluid-guiding means, e.g. diffusers adjustable for unidirectional fluid flow in reversible pumps especially adapted for liquid pumps
Definitions
- the invention relates to a centrifugal pump with a Impeller surrounding annular pressure chamber, which is coaxial to the impeller and in which the fluid circulates until it reached the pump outlet, between the pressure chamber and Outlet no further channels or lines for the to Exhaust flowing medium exist.
- centrifugal pumps known from EP 0218031 have an annular pressure chamber surrounding the impeller, the outlet is located directly in the chamber wall, the outlet being in a pump side surface, which is perpendicular to the impeller axis and with which the Pump can be attached to a surface of a consumer, so that the side surface of the pump on the side surface of the Consumer and the inlets and outlets in both Surfaces are arranged.
- centrifugal pump cannot be used in two Direction of rotation are driven, so that it is not is possible due to the choice of the direction of rotation different channels, rooms, consumers or systems to supply with fluid.
- Pumps operated with switchable directions of rotation are e.g. from GB 2 202 133 A, EP 0 128 579 A 1, Fr 2 598 183 Al and US 4,331,295.
- Pumps for windscreen washers at which by changing the direction of rotation either Front window or the rear window with washing liquid is supplied.
- Only for the pump from the US 4 331 295 is the with different directions of rotation Washing liquid from a container 1 or a container 2 sucked in to always feed them to the same nozzle.
- Centrifugal pump with a fixed direction of rotation known at the conveying direction thanks to internal adjustable flaps can be switched between two connecting pieces.
- the object of the invention is to provide a centrifugal pump improve the type mentioned so that due to the selected direction of rotation of the pump impeller different channels, rooms, consumers or systems can be supplied with the pumped medium.
- the pressure chamber has a second pump outlet that both pump outlets through a valve closing element are closable that in an impeller direction of rotation flow flowing in a first direction in the Pressure chamber closes the first pump outlet and the second pump outlet opens and that in the opposite direction of rotation of the impeller second direction flowing flow in the pressure chamber opens the first pump outlet and the second Pump outlet closes, and that both valves in one arranged at right angles to the impeller axis Pump side surface lie, which is the pump chamber limited and with which the pumps on the side surface of a Consumer or a connecting device attachable is.
- valve closing member of the delivered outlet opened by the medium and the valve closing member of the outlet not supplied is closed by the medium. It controls the impeller automatically due to its direction of rotation, through which outlet the medium is to flow, whereby the other, not supplied outlet securely closed is.
- the Valve closure members have flow areas that in a flow direction through the medium Close valve closing member and in the opposite Open the valve closing element in the direction of flow.
- the valve closing elements can close valve flaps be.
- a high level of functional reliability is achieved if a front flap edge at least one flow area forms.
- the front flap edge can be nose-shaped or stick out like a tongue.
- valve closing members are stored in an insert in the interior of the Pump housing is inserted. This will make it possible
- the Use down to the edge of the pump housing Form the pump side surface.
- a disc-shaped, in particular circular disc-shaped Pump housing 1 is with a side surface 2 on the Housing of an electric motor, not shown, and with the opposite side surface 3 on the side surface a consumer or a connection device attachable.
- the axis of the housing disc lies on the Axis of the pump impeller 4, the 5 via a shaft Electric motor is driven.
- the housing 1 forms an interior 6, in which not only the impeller 4, but also a pump insert 7 is arranged, which consists in particular of plastic and forms the inlet, two outlets and a circular pump pressure chamber 8, which surrounds the impeller 4 coaxially and for Side of the impeller has an annular extension 8a, in or on which two diametrically opposite outlets 9, 10 are attached.
- the outlets 9, 10 are thus formed by the insert 7, the coaxial inlet 11, which leads from the surface 3 to the center of the impeller 4, being arranged centrally between the outlets.
- the preferably rotationally symmetrical insert 7 rests with its outer wall on the inner wall of the housing 1 and, together with the flange-shaped edge la of the housing 1, forms the pump side surface 3 with which the pump is fastened in a sealing manner to the side wall of the consumer.
- the inlets and outlets of the pump are aligned with those of the consumer.
- the outlets 9 and 10 formed by the insert 7 with their outlet openings arranged in the side surface 3 each have a valve closing member 12, 13 which each from one side through an axis 15 hinged flap is formed, being in the closed Condition of the closing member or the flap thereof
- Side surface 14 is swept by the medium, that circles in the pressure chamber 8. This the pressure chamber facing side surface 14 points on the axis 15 facing away from a nose or tongue 16, the one forms oblique flow surface 17 which in the Flow path of the circulating fluid at an angle protrudes.
- the first closing member 12 of the outlet 9 through the Pumped medium closed and kept closed because the Pumped medium with this closing element first Articulation point or the axis 15 reached and only after that the top or side surface 14 of the closing member reached so that the pumped medium on the side surface 14th exerts a flow pressure that the first closing member 12 closes or keeps closed.
- the second closing member 13 of the second outlet 10 is but in the opposite direction from the perspective of Flow of the medium is arranged so that the Fluid first the front edge and thus the Nose / tongue 16 of the closing member 13 is reached.
- Closing link types must be formed as long as provided is that the circulating fluid in the pressure chamber operate the locking member, i.e. depending on Flow direction can open and close.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- External Artificial Organs (AREA)
Description
Die Erfindung betrifft eine Kreiselpumpe mit einer das Laufrad umgebenden ringförmigen Druckkammer, die koaxial zum Laufrad ist und in der das Fördermedium kreist, bis es den Pumpenauslaß erreicht, wobei zwischen Druckkammer und Auslaß keine weiteren Kanäle oder Leitungen für das zum Auslaß strömende Fördermedium bestehen.The invention relates to a centrifugal pump with a Impeller surrounding annular pressure chamber, which is coaxial to the impeller and in which the fluid circulates until it reached the pump outlet, between the pressure chamber and Outlet no further channels or lines for the to Exhaust flowing medium exist.
Derartige aus der EP 0218031 bekannte Kreiselpumpen besitzen eine das Laufrad umgebende ringförmige Druckkammer, in deren Kammerwand sich direkt der Auslaß befindet, wobei der Auslaß in einer Pumpenseitenfläche liegt, die rechtwinklig zur Laufradachse ist und mit der die Pumpe an einer Fläche eines Verbrauchers befestigbar ist, so daß die Seitenfläche der Pumpe an der Seitenfläche des Verbrauchers liegt und die Ein- und Auslässe in beiden Flächen angeordnet sind. Such centrifugal pumps known from EP 0218031 have an annular pressure chamber surrounding the impeller, the outlet is located directly in the chamber wall, the outlet being in a pump side surface, which is perpendicular to the impeller axis and with which the Pump can be attached to a surface of a consumer, so that the side surface of the pump on the side surface of the Consumer and the inlets and outlets in both Surfaces are arranged.
Diese bekannte Kreiselpumpe kann nicht in zwei Drehrichtungen gefahren werden, so daß es auch nicht möglich ist, aufgrund der Wahl der Drehrichtung unterschiedliche Kanäle, Räume, Verbraucher oder Systeme mit Fördermedium zu versorgen.This well-known centrifugal pump cannot be used in two Direction of rotation are driven, so that it is not is possible due to the choice of the direction of rotation different channels, rooms, consumers or systems to supply with fluid.
Pumpen, die mit umschaltbaren Drehrichtungen betrieben
werden können sind z.B. aus GB 2 202 133 A, EP 0 128 579
A 1, Fr 2 598 183 Al und US 4 331 295 bekannt. Hier
handelt es sich um Pumpen für Scheibenwaschanlagen, bei
denen durch Umschaltung der Drehrichtung entweder die
Frontscheibe oder die Heckscheibe mit Waschflüssigkeit
beliefert wird. Lediglich bei der Pumpe aus der US
4 331 295 wird bei verschiedenen Drehrichtungen die
Waschflüssigkeit aus einem Behälter 1 oder einem Behälter
2 angesaugt, um sie immer derselben Düse zuzuführen.
Neben diesen Schriften ist aus der NL 92 795 eine
Kreiselpumpe mit fester Drehrichtung bekannt, bei der
durch interne verstellbare Klappen die Förderrichtung
zwischen zwei Anschlußstutzen umgeschaltet werden kann.Pumps operated with switchable directions of rotation
are e.g. from
Aufgabe der Erfindung ist es, eine Kreiselpumpe der eingangs genannten Art so zu verbessern, daß aufgrund der gewählten Drehrichtung des Pumpenlaufrades unterschiedliche Kanäle, Räume, Verbraucher oder Systeme mit Fördermedium belieferbar sind.The object of the invention is to provide a centrifugal pump improve the type mentioned so that due to the selected direction of rotation of the pump impeller different channels, rooms, consumers or systems can be supplied with the pumped medium.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Druckkammer einen zweiten Pumpenauslaß aufweist, daß beide Pumpenauslässe durch ein Ventilschließglied verschließbar sind, daß in einer Laufrad-Drehrichtung die in einer ersten Richtung fließende Strömung in der Druckkammer den ersten Pumpenauslaß schließt und den zweiten Pumpenauslaß öffnet und daß in der entgegengesetzten Laufrad-Drehrichtung die in der zweiten Richtung fließende Strömung in der Druckkammer den ersten Pumpenauslaß öffnet und den zweiten Pumpenauslaß schließt, und daß beide Ventile in einer zur Laufradachse rechtwinklig angeordneten Pumpenseitenfläche liegen, die die Pumpenkammer begrenzt und mit der die Pumpen an der Seitenfläche eines Verbrauchers oder einer Anschlußvorrichtung befestigbar ist.This object is achieved in that the pressure chamber has a second pump outlet that both pump outlets through a valve closing element are closable that in an impeller direction of rotation flow flowing in a first direction in the Pressure chamber closes the first pump outlet and the second pump outlet opens and that in the opposite direction of rotation of the impeller second direction flowing flow in the pressure chamber opens the first pump outlet and the second Pump outlet closes, and that both valves in one arranged at right angles to the impeller axis Pump side surface lie, which is the pump chamber limited and with which the pumps on the side surface of a Consumer or a connecting device attachable is.
Je nach der Drehrichtung des Laufrades in der einen oder anderen Richtung wird der erste oder zweite Auslaß mit Fördermedium beliefert, wobei das Ventilschließglied des belieferten Auslasses durch das Fördermedium geöffnet und das Ventilschließglied des nicht belieferten Auslasses durch das Fördermedium geschlossen wird. Damit steuert das Laufrad aufgrund seiner Drehrichtung selbsttätig, durch welchen Auslaß das Fördermedium fließen soll, wobei der andere, nicht belieferte Auslaß sicher verschlossen ist. Dieses geschieht bei einfachster Konstruktion, geringem Montageaufwand, nicht vergrößerten Außenabmessungen und hoher Betriebssicherheit. Besonders vorteilhaft ist hierbei, wenn die Ventilschließglieder Strömungsflächen aufweisen, die in einer Strömungsrichtung durch das Fördermedium das Ventilschließglied schließen und in der entgegengesetzten Strömungsrichtung das Ventilschließglied öffnen. Dabei können die Ventilschließglieder Ventilschließklappen sein. Eine besonders platzsparende Bauweise bei hoher Funktionssicherheit wird erreicht, wenn die Klappen im geöffneten Zustand in die Druckkammer hineinreichen.Depending on the direction of rotation of the impeller in one or the first or second outlet with the other direction Delivery medium supplied, the valve closing member of the delivered outlet opened by the medium and the valve closing member of the outlet not supplied is closed by the medium. It controls the impeller automatically due to its direction of rotation, through which outlet the medium is to flow, whereby the other, not supplied outlet securely closed is. This happens with the simplest construction, low installation effort, not enlarged External dimensions and high operational reliability. It is particularly advantageous if the Valve closure members have flow areas that in a flow direction through the medium Close valve closing member and in the opposite Open the valve closing element in the direction of flow. Here the valve closing elements can close valve flaps be. A particularly space-saving design with high Functional reliability is achieved if the flaps in the Open the opened state into the pressure chamber.
Eine hohe Funktionssicherheit wird erreicht, wenn eine vordere Klappenkante mindestens eine Strömungsfläche bildet. Hierbei kann die vordere Klappenkante nasenförmig oder zungenförmig vorstehen.A high level of functional reliability is achieved if a front flap edge at least one flow area forms. Here, the front flap edge can be nose-shaped or stick out like a tongue.
Es ist von Vorteil, wenn die Ventilschließglieder in einem Einsatz gelagert sind, der im Innenraum des Pumpengehäuses einliegt. Damit wird es möglich, eine übliche Pumpe allein dadurch zu der erfindungsgemäßen Pumpe zu machen, daß der Einsatz umgestaltet wird, d.h. bis auf den Einsatz können alle anderen Teile der Pumpe gleich bleiben und nur aufgrund des gewählten, mit zwei verschließbaren Auslässen versehenen Einsatzes wird die erfindungsgemäße Pumpe geschaffen. Hierbei kann der Einsatz bis auf den Rand des Pumpengehäuses die Pumpenseitenfläche bilden.It is beneficial if the valve closing members are stored in an insert in the interior of the Pump housing is inserted. This will make it possible The usual pump alone to the invention Pump to remodel the insert, i.e. All other parts of the pump can be used stay the same and only because of the chosen one, with two closable outlets provided insert Pump according to the invention created. Here, the Use down to the edge of the pump housing Form the pump side surface.
Eine einfache Konstruktion, einen leichten und dichten Anschluß und eine einfache Montage werden erreicht, da die zwei Pumpenauslässe und Ventile diametral gegenüberliegend angeordnet sind, wobei der Pumpeneinlaß mittig zwischen den zwei Pumpenauslässen angeordnet ist. Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben.A simple construction, a light and tight Connection and easy assembly are achieved because the two pump outlets and valves diametrically are arranged opposite one another, the pump inlet is arranged centrally between the two pump outlets. An embodiment of the invention is in the Drawing shown and will be described in more detail below described.
Es zeigen:
- Fig. 1
- Einen axialen Schnitt durch die Pumpe,
- Fig. 2
- eine Ansicht auf die Seitenfläche der Pumpe und
- Fig. 3
- einen Schnitt durch einen Auslaß nach III-III
in
Figur 2.
- Fig. 1
- An axial section through the pump,
- Fig. 2
- a view of the side surface of the pump and
- Fig. 3
- a section through an outlet according to III-III in Figure 2.
Ein scheibenförmiges, insbesondere kreisscheibenförmiges
Pumpengehäuse 1 ist mit einer Seitenfläche 2 an dem
Gehäuse eines nicht dargestellten Elektromotors und mit
der gegenüberliegenden Seitenfläche 3 an der Seitenfläche
eines Verbrauchers oder einer Anschlußvorrichtung
befestigbar. Die Achse der Gehäusescheibe liegt auf der
Achse des Pumpenlaufrades 4, das über eine Welle 5 vom
Elektromotor angetrieben ist. A disc-shaped, in particular circular disc-shaped
Pump housing 1 is with a
Das Gehäuse 1 bildet einen Innenraum 6, in dem nicht nur
das Laufrad 4, sondern auch ein Pumpeneinsatz 7
angeordnet ist, der insbesondere aus Kunststoff besteht
und den Einlaß, zwei Auslässe und eine kreisförmige
Pumpendruckkammer 8 bildet, die das Laufrad 4 koaxial
umgibt und zur Seite des Laufrades eine ringförmige
Erweiterung 8a aufweist, in oder an der zwei diametral
gegenüberliegende Auslässe 9,10 befestigt sind. Die
Auslässe 9,10 werden damit vom Einsatz 7 gebildet, wobei
mittig zwischen den Auslässen der koaxiale Einlaß 11
mittig angeordnet ist, der von der Fläche 3 zum Zentrum
des Laufrades 4 führt.
Der vorzugsweise rotationssymmetrische Einsatz 7 liegt
mit seiner Außenwandung an der Innenwandung des Gehäuses
1 an und bildet zusammen mit dem flanschförmigen Rand la
des Gehäuses 1 die Pumpenseitenfläche 3, mit der die
Pumpe an der Seitenwand des Verbrauchers abdichtend
befestigt wird. Hierbei fluchten die Ein- und Auslässe
der Pumpe mit denen des Verbrauchers.The housing 1 forms an
The preferably rotationally
Die vom Einsatz 7 gebildeten Auslässe 9 und 10 mit ihren
in der Seitenfläche 3 angeordneten Auslassöffnungen
weisen jeweils ein Ventilschließglied 12,13 auf, das
jeweils von einer seitlich durch eine Achse 15
angelenkten Klappe gebildet wird, wobei im geschlossenen
Zustand des Schließgliedes bzw. der Klappe deren
Seitenfläche 14 von dem Fördermedium überstrichen wird,
das in der Druckkammer 8 kreist. Diese der Druckkammer
zugewandte Seitenfläche 14 weist auf der der Achse 15
abgewandten Seite eine Nase oder Zunge 16 auf, die eine
schräge Strömungsfläche 17 bildet, die in den
Strömungsweg des kreisenden Fördermediums schräg
hineinragt.The
In dem Fall, in dem das Fördermedium in Richtung des
Pfeiles 18 im Uhrzeigersinn in der Druckkammer 8 kreist,
wird das erste Schließglied 12 des Auslasses 9 durch das
Fördermedium geschlossen und geschlossen gehalten, da das
Fördermedium bei diesem Schließglied zuerst die
Anlenkstelle bzw. die Achse 15 erreicht und danach erst
die Oberseite bzw. die Seitenfläche 14 des Schließgliedes
erreicht, so daß das Fördermedium auf die Seitenfläche 14
einen Strömungsdruck ausübt, der das erste Schließglied
12 schließt bzw. verschlossen hält.
Das zweite Schließglied 13 des zweiten Auslasses 10 ist
dagegen in entgegengesetzter Richtung aus Sicht der
Strömung des Fördermediums angeordnet, so daß das
Fördermedium zuerst die vordere Kante und damit die
Nase/Zunge 16 des Schließgliedes 13 erreicht. Damit übt
das Fördermedium auf die Strömungsfläche 17 des
Schließgliedes 13 einen Druck aus, der das Schließglied
13 öffnet und so lange offen hält, bis die Drehrichtung
des Laufrades 4 und damit die Strömungsrichtung des
Fördermediums in der Druckkammer 8 umgekehrt wird. Sobald
das Fördermedium in Richtung des Pfeiles 19 strömt, wird
das Ventilschließglied 13 geschlossen und das
Ventilschließglied 12 geöffnet.In the case where the medium is in the direction of
Statt klappenförmiger Ventilschließglieder 12,13 können
diese auch andere Formen besitzen bzw. von anderen
Schließgliedarten gebildet sein, solange dafür gesorgt
wird, daß das in der Druckkammer kreisende Fördermedium
das Schließglied betätigen, d.h. je nach
Strömungsrichtung öffnen und schließen kann.Instead of flap-shaped
Claims (9)
- A centrifugal pump having an annular pressure chamber (8) which encloses the impeller (4) and which is coaxial with the impeller and in which the flow medium circulates until it reaches the pump outlet (9, 10), no further channels or lines being provided for the flow medium flowing to the outlet, characterised in thatthe pressure chamber (8) has two pump outlets (9,10), the pump inlet being disposed in the centre therebetween,a valve closure member (12, 13) by witch the pump outlets (9, 10) can be closed is provided for each of the two pump outlets (9, 10),in one direction (18) of rotation of the impeller the flow flowing in a first direction closes the first pump outlet (9) in the pressure chamber (8) and opens the second pump outlet,in the opposite direction (19) of rotation of the impeller the flow flowing in the second direction opens the first pump outlet (9) in the pressure chamber (8) and closes the second pump outlet (10), andthe two valves are situated in a lateral face (3) of the pump which is disposed at right angles to the axis of the impeller and which bounds the pump chamber (8) and by means of which the pump can be attached to a lateral face of a load or of a connecting device.
- A centrifugal pump according to claim 1 characterised in that the valve closure members (12, 13) have flow faces (17) which close the valve closure member (12, 13) in one direction of flow by the flow medium and in the opposite directicn of flow open the valve closure member (12, 13).
- A centrifugal pump according to claims 1 or 2 characterised in that the valve closure members (12, 13) are flaps.
- A centrifugal pump according to claim (3) characterised in that the flap when opened extends into the pressure chamber (8).
- A centrifugal pump according to claims 2 to 4 characterised in that a front flap edge (16) forms at least one flow face (17).
- A centrifugal pump according to claim 5 characterised in that the front flap edge (16) is nose-shaped or tongue-shaped.
- A centrifugal pump according to claim 6 characterised in that the valve closure members (12, 13) are mounted in an insert (7) contained in the interior (6) of the pump casing (1).
- A centrifugal pump according to claim 7 characterised in that apart from the edge (la) of the pump casing (1), the insert (7) forms the lateral face (3) of the pump.
- A centrifugal pump according to claim 8 characterised in that the two pump outlets (9, 10) and valves are disposed diametrically opposite one another, the pump inlet (11) being disposed centrally between the two pump outlets.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4418153 | 1994-05-25 | ||
| DE4418153A DE4418153A1 (en) | 1994-05-25 | 1994-05-25 | Centrifugal fluid delivery pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0694698A1 EP0694698A1 (en) | 1996-01-31 |
| EP0694698B1 true EP0694698B1 (en) | 1998-04-08 |
Family
ID=6518877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95107775A Expired - Lifetime EP0694698B1 (en) | 1994-05-25 | 1995-05-22 | Centrifugal pump |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0694698B1 (en) |
| DE (2) | DE4418153A1 (en) |
| ES (1) | ES2116648T3 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10133130A1 (en) | 2001-07-07 | 2003-01-16 | Miele & Cie | Circulation pump with/without heating device, especially for supplying washing liquid to dishwasher spray arms, has water switch integrated into circulation pump |
| EP3667093A1 (en) | 2006-05-24 | 2020-06-17 | ResMed Motor Technologies Inc | Compact low noise efficient blower for cpap devices |
| DE102007056922A1 (en) * | 2007-11-27 | 2009-05-28 | BSH Bosch und Siemens Hausgeräte GmbH | Water-carrying household appliance with a water diverter |
| DE102009002667B4 (en) * | 2009-04-27 | 2016-03-24 | BSH Hausgeräte GmbH | Dishwasher and circulation pump with water separator |
| EP3376037B1 (en) * | 2017-03-14 | 2021-01-27 | Grundfos Holding A/S | Centrifugal pump assembly |
| EP3376038B1 (en) * | 2017-03-14 | 2021-07-28 | Grundfos Holding A/S | Pump unit |
| DE102017221732A1 (en) * | 2017-12-01 | 2019-06-06 | E.G.O. Elektro-Gerätebau GmbH | impeller |
| EP3540234A1 (en) * | 2018-03-13 | 2019-09-18 | Grundfos Holding A/S | Centrifugal pump assembly and method for moving a valve in a pump assembly |
| EP3904738A1 (en) * | 2020-04-28 | 2021-11-03 | Grundfos Holding A/S | Hydraulic valve device and centrifugal pump assembly including such hydraulic valve device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL92795C (en) * | 1900-01-01 | |||
| US2883843A (en) * | 1954-11-12 | 1959-04-28 | Gen Electric | Clothes washer with liquid recirculation system |
| US2838002A (en) * | 1955-11-21 | 1958-06-10 | Gen Electric | Two-way pump |
| DE1809054A1 (en) * | 1968-11-15 | 1970-06-04 | Nebel Dipl Ing Franz Philipp | Paddle wheel centrifuge pump |
| DE2114978A1 (en) * | 1971-03-27 | 1972-10-05 | Wahler Fa Gustav | Valve for gaseous or liquid media |
| DE2245021A1 (en) * | 1972-09-14 | 1974-03-21 | Helmut Barwig | ELECTRIC WATER PUMP FOR CARAVANS |
| JPS5848922Y2 (en) * | 1979-04-27 | 1983-11-08 | 久紀 割橋 | Pump unit for window washer |
| DE3209542C1 (en) * | 1982-03-16 | 1992-05-07 | Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart | Dishwashing machine |
| IT8353466V0 (en) * | 1983-06-15 | 1983-06-15 | Fiat Auto Spa | PUMP FOR SELECTIVE SUPPLY OF THE FRONT WASHER AND REAR WINDOW OF A VEHICLE |
| SE458792B (en) * | 1984-01-30 | 1989-05-08 | Flygt Ab | SEAT BEFORE PUMPING AND MOVEMENT OF PRIOR SCIENCE CONTAINING SOLID PARTICLES AND PUMP BEFORE PERFORMING THE SEAT |
| JPS62261693A (en) * | 1986-04-30 | 1987-11-13 | Maruko Keihouki Kk | Selective type delivery pump |
| GB8629455D0 (en) * | 1986-12-09 | 1987-01-21 | Trico Folberth Ltd | Valve arrangement |
| DE3708327A1 (en) * | 1987-03-14 | 1988-09-22 | Bosch Gmbh Robert | DEVICE FOR CONVEYING LIQUID ON TWO SPRAY NOZZLES DISC AREAS OF A MOTOR VEHICLE |
-
1994
- 1994-05-25 DE DE4418153A patent/DE4418153A1/en not_active Withdrawn
-
1995
- 1995-05-22 ES ES95107775T patent/ES2116648T3/en not_active Expired - Lifetime
- 1995-05-22 EP EP95107775A patent/EP0694698B1/en not_active Expired - Lifetime
- 1995-05-22 DE DE59501825T patent/DE59501825D1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0694698A1 (en) | 1996-01-31 |
| DE4418153A1 (en) | 1995-11-30 |
| DE59501825D1 (en) | 1998-05-14 |
| ES2116648T3 (en) | 1998-07-16 |
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