EP0218031B2 - Centrifugal pump - Google Patents

Centrifugal pump Download PDF

Info

Publication number
EP0218031B2
EP0218031B2 EP86110700A EP86110700A EP0218031B2 EP 0218031 B2 EP0218031 B2 EP 0218031B2 EP 86110700 A EP86110700 A EP 86110700A EP 86110700 A EP86110700 A EP 86110700A EP 0218031 B2 EP0218031 B2 EP 0218031B2
Authority
EP
European Patent Office
Prior art keywords
pump
housing
centrifugal pump
side wall
pump according
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
Application number
EP86110700A
Other languages
German (de)
French (fr)
Other versions
EP0218031A1 (en
EP0218031B1 (en
Inventor
Günter Naasner
Günter Strelow
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.)
Wilo GmbH
Original Assignee
OPLAENDER WILO WERK GmbH
Wilo Werk GmbH and Co
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25836241&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0218031(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by OPLAENDER WILO WERK GmbH, Wilo Werk GmbH and Co filed Critical OPLAENDER WILO WERK GmbH
Priority to AT86110700T priority Critical patent/ATE49632T1/en
Publication of EP0218031A1 publication Critical patent/EP0218031A1/en
Application granted granted Critical
Publication of EP0218031B1 publication Critical patent/EP0218031B1/en
Publication of EP0218031B2 publication Critical patent/EP0218031B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/60Mounting; Assembling; Disassembling
    • F04D29/605Mounting; Assembling; Disassembling specially adapted for liquid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/40Casings; Connections of working fluid
    • F04D29/406Casings; Connections of working fluid especially adapted for liquid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/40Casings; Connections of working fluid
    • F04D29/42Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps

Definitions

  • the invention relates to a centrifugal pump according to the preamble of claim 1.
  • centrifugal pumps has molded, protruding inlet and outlet connections which are fastened to pipes or devices by means of pipe fittings. Such an installation requires a considerable amount of space and the parts required for this increase the overall weight. Manufacturing and assembly costs are also high and different connection parts are required for each pump type or pump size.
  • Fig. 4 From DE-OS-2 640 374, Fig. 4 it is known to make an outside of the pump housing flat and to attach a pipe connector to this outside. At the connection piece protrude, which extend into corresponding recesses in the outer surface of the pump. The arrangement of such nozzles and recesses means an increased manufacturing effort.
  • the object of the invention is to improve a circuit pump in such a way that it is easy to assemble with simple manufacture and minimum space requirement.
  • Such a pump can be attached with its flat side wall directly to the flat side wall of a device without any intermediate parts. It is therefore sufficient that the device to which a pump is to be connected has a smooth surface with two openings in this surface in order to mount a pump directly with the least amount of assembly work. Connection parts and intermediate parts are not required, so that considerable space and weight are saved. There is no need for pipe fittings. Very compact heaters and heating units can be created. On the side facing the consumption or connection device, the pump lacks a pressure wall, so that weight and space are saved. Manufacturing, assembly and changes are also simplified.
  • Screws inserted in the bores of the flanges lead to a simple and secure attachment of the pump to the consumption device.
  • the one who needs a pump for a device need only ensure that regardless of the desired pump size and pump type, the same two openings of the same size are always present at the same distance on the outer wall or on an intermediate wall, in order then to give the pump the desired power order and fasten.
  • a particularly simple assembly is made possible when the opening forming the outer end of the outlet is parallel to the axis of the impeller and in the plane of the side wall of the pump housing.
  • the side wall of the pump housing can be attached to the wall of the consumption or connection device directly or by means of sealing means.
  • a particularly small construction is achieved when the side wall of the pump housing having the inlet opening is perpendicular to the axis of the impeller. It when the side wall of the pump housing having the inlet opening is circular and coaxial with the rotor is particularly advantageous.
  • the pump housing has an inner insert which forms a spirally widening outlet channel and which is surrounded on the outside by an outer housing which is fastened to the drive motor and which lies with its side edges against the wall of the consumption device.
  • This not only leads to a particularly pressure-tight encapsulation of the pump, but also to an interchangeability of the inner insert, which can be adapted to the most varied of conditions.
  • the inner insert form the connection surface to the consumption or connection device. Any rotational position of the pump in the installed state can be reached if the inner insert in the outer housing is rotatably adjustable.
  • a quick and easy assembly and disassembly is made possible in that the pump, in particular the (outer) housing, is fastened to the consumption or connection device by a bayonet lock. Manufacturing and assembly are facilitated if the motor housing and pump housing, in particular the pump outer housing, are made in one piece. Alternatively or additionally, the can of the motor and the pump housing, in particular the pump outer, can be used for this housing be made in one piece.
  • a part is attached between the pump and the consumption device, which forms a coaxial annular chamber around a pipe aligned with the pump inlet, which can be connected to the pump outlet and the inlet of the consumption device.
  • the pump can be attached in any rotational position regardless of the position of the consumer inlet.
  • the size of the consumer inlet can vary and there can be multiple consumer inlets.
  • all disk-shaped devices or parts attached between the pump and the consumption or connection device can be fold-symmetrical about an axis which intersects the pump rotation axis and is perpendicular to it, so that any connections or control elements are on the other side when rotated through 180 ° .
  • centrifugal pump for use of the centrifugal pump according to the invention it is advantageously proposed that it be on the flat outer or intermediate wall of a heating duct, heater, liquid storage container, heat exchanger, pump housing, pipe connection, hot water device, breather, dirt trap, differential pressure regulator, measured value sensor, pre-swirl shut-off device, mixer, flow divider, flow control or a gravity brake can be fastened, the outer or intermediate wall having two openings which correspond in spacing and / or diameter to those of the side wall of the pump housing.
  • the canned pump is used as a hot water pump, especially in heating systems.
  • the pump 1 has a pump housing 2, 11, in particular made of plastic or metal, in which an impeller 3 is rotatably arranged and in which a tubular inlet 4 is formed coaxially to the impeller, through which the impeller is directly flown.
  • a spirally widening outlet channel 5 is located around the impeller.
  • the housing 2 is in the form of a circular disk, the height H of the cylindrical outer wall being substantially less than the diameter of the circular flat pump side wall 6, which is at right angles and coaxial to the axis of the impeller 3.
  • the inlet 4 opens with an inlet opening 7 and the outlet channel 5 with an outlet opening 8.
  • the openings 7 and 8 are in the plane of the side wall 6.
  • a canned electric motor 9 coaxially attached to the impeller 3, which lies with its drive shaft 10 in the impeller 3.
  • the pump housing 2 consists of an inner insert 2 which closely surrounds the impeller 3 and forms the spirally widening outlet channel 5 around the impeller, and an outer housing 11 surrounding the insert 2, which is fastened to the electric motor 9 and carries seals 13, which are in the plane of the side wall 6.
  • the insert 2 thus forms the flat interface to the consumption or connection devices.
  • the outer housing 11 which acts as a pressure vessel, forms flanges 12 parallel to the side wall 6, which have bores 14 in order to be able to accommodate screws. With these screws, not shown, the outer housing 11 and thus the entire pump can be fastened to consumption devices.
  • Impellers 3 and inserts 2 of different powers can be inserted into this outer housing 11.
  • the impeller 3 can be replaced by a differently shaped impeller, but the spiral channel 5 surrounding the impeller can be adapted as a book of the inlet to the respective impeller and the desired power as well as to the respective speed range.
  • the inlet and outlet openings 7, 8 in use 2a can be adapted to the conditions of the consumption or connection devices in terms of their distance from one another and also in their arrangement in the flat side wall 6. It is sufficient to change the insert 2a to meet the requirements.
  • the outlet on the circumference of the housing can be arranged radially or tangentially. It is also important that the side wall 6 of the pump housing 2 or the outer housing 11 has at least one flange 12 on the outer edge, with which the side wall can be fastened to the wall of the consumption device.
  • the inner insert 2 can be made smaller than shown in hallway 1. It may be sufficient if it only forms the inlet opening 7 and the diffuser for the impeller 3.
  • the insert 2 can also consist of several parts. It is particularly easy to manufacture if it is made of plastic. In particular, this makes it possible and economically justifiable to insert differently shaped inserts into the pump so that the user can change the pump output before installation.
  • the pump in particular the (outer) housing
  • the consumption or connection device by a bayonet lock.
  • Motor housing and pump housing, in particular pump outer housing 11, are made in one piece.
  • the can of the motor and the pump housing, in particular the pump outer housing 11, are made in one piece.
  • FIG. 7 shows an embodiment in which a part 30 is fastened between the pump and the consumption device, which forms a coaxial annular chamber 31 around a pipe 32 aligned with the pump inlet and can be connected to the pump outlet and the inlet of the consumption device.
  • Consumption devices are understood to mean all the devices, parts and devices to which a pump is usually attached. These can include the following: a boiler, heater, hot water device, liquid storage tank, heat exchanger, pump housing, pipe connection, breather, dirt trap, differential pressure regulator, sensor, pre-swirl regulator, flow divider, mixer, a shut-off device or a gravity brake.
  • a venting device 15 is shown, on the left flat side wall of the pump 1 can be screwed.
  • This ventilation device with ventilation chamber 16 and grille 17 as well as the upper vent 18 can be screwed with the side opposite the pump to another device 19 (FIG. 2), which can be a heater, boiler, boiler or other consumer device.
  • the ventilation device 15 forms an intermediate part between the device 19 and the pump 1, through which the two water flows flow.
  • the pump sucks water through the ventilation chamber 16 to the inlet opening 7 and then presses this water back through the opening 8 and the flow nozzle 21 to the channel 22 of the device 19.
  • Opening 8, flow connector 21 and channel 22 are coaxial with each other.
  • the inlet opening 7 and the channel 20 are coaxial with one another and the ventilation chamber 16 is at the same height.
  • the pump can be attached to a sheet metal wall 23, as shown in Fig. 2, which sheet metal wall is part of any device. Instead, the pump can also be attached to the outer wall 24 of a cast iron boiler member 25 (FIG. 5).
  • a pipe connection part 26 is also shown, to which the pump can be fastened, so that this turns the pump 1 into a conventional pump with radial or tangential pipe connections.
  • Such a flat connection part can also be attached laterally to the pump in order to create a radial or tangential outlet.
  • a flat connection part can be fastened, which forms a concavely curved outer surface for consumers on the side surface facing away from the pump, which has a correspondingly convex connection surface.
  • Additional devices can be interposed between the pump and the device connected to the pump, the cable surfaces of which are fastened to one another in parallel and through which the pump currents flow. As a result, a small-sized, easy-to-assemble sandwich construction is achieved. It is also of particular importance that an insert 2a and an impeller 3 can be used for each output size.
  • all disk-shaped devices 15 or parts 30 fastened between the pump and the consumption or connection device 15, 19, 25, 26 are fold-symmetrical about an axis which intersects the pump rotation axis and to this is rectangular.
  • the pump outlet or the pressure port can protrude radially or tangentially from the housing.

Landscapes

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

Description

Die Erfindung betrifft eine Kreiselpumpe entsprechend dem Oberbegriff des Anspruch 1.The invention relates to a centrifugal pump according to the preamble of claim 1.

Das Gehäuse bekannter Kreiselpumpen weist angeformte, vorstehende Einlaß- und Auslaßstutzen auf, die durch Rohrverschraubungen an Leitungen oder Geräten befestigt werden. Eine solche Installation erfordert einen erheblichen Platzbedarf und die dazu benötigten Teile erhöhen das Gesamtgewicht. Auch sind Herstellungs- und Montageaufwand groß und für jede Pumpenart oder Pumpengröße sind unterschiedliche Anschlußteile nötig.The housing of known centrifugal pumps has molded, protruding inlet and outlet connections which are fastened to pipes or devices by means of pipe fittings. Such an installation requires a considerable amount of space and the parts required for this increase the overall weight. Manufacturing and assembly costs are also high and different connection parts are required for each pump type or pump size.

Aus der DE-OS-2 640 374, Fig. 4 ist es bekannt eine Außenseite des Pumpengehäuses flach auszuführen und an dieser Außenseite ein Rohranschlußstück zu befestigen. Am Anschlußstück stehen Stutzen vor, die in entsprechende Ausnehmungen in der Pumpenaußenfläche hineinreichen. Das Anordnen von solchen Stutzen und Ausnehmungen bedeutet einen erhöhten Herstellungsaufwand.From DE-OS-2 640 374, Fig. 4 it is known to make an outside of the pump housing flat and to attach a pipe connector to this outside. At the connection piece protrude, which extend into corresponding recesses in the outer surface of the pump. The arrangement of such nozzles and recesses means an increased manufacturing effort.

Aufgabe der Erfindung ist es, eine Kreisepumpe derart zu verbessern, daß sie bei einfacher Herstellung und geringstem Platzbedarf einfach zu montieren ist.The object of the invention is to improve a circuit pump in such a way that it is easy to assemble with simple manufacture and minimum space requirement.

Diese Aufgabe wird erfindungsgemäß durch die Kennzeichnenden Merkmale von Anspruch 1 gelöst.This object is achieved by the characterizing features of claim 1.

Eine solche Pumpe kann mit ihrer flachen Seitenwand direkt an der flachen Seitenwand einer Vorrichtung ohne Zwischenteile befestigt werden. Es reicht somit aus, daß die Vorrichtung, an der eine Pumpe angeschlossen werden soll, eine glatte Fläche mit zwei Öffnungen in dieser Fläche hat, um direkt bei geringstem Montageaufwand eine Pumpe zu befestigen. Anschlußteile und Zwischenteile sind nicht erforderlich, so daß erheblich an Platz und Gewicht gespart wird. Rohrverschraubungen erübrigen sich. Es lassen sich sehr kompakte Heizgeräte und Heizeinheiten schaffen. An der der Verbrauchs- oder Anschlußvorrichtung zugekehrten Seite fehlt der Pumpe eine Druckwand, so daß an Gewicht und Platz gespart wird. Auch sind Herstellung, Montage und Änderungen vereinfacht.Such a pump can be attached with its flat side wall directly to the flat side wall of a device without any intermediate parts. It is therefore sufficient that the device to which a pump is to be connected has a smooth surface with two openings in this surface in order to mount a pump directly with the least amount of assembly work. Connection parts and intermediate parts are not required, so that considerable space and weight are saved. There is no need for pipe fittings. Very compact heaters and heating units can be created. On the side facing the consumption or connection device, the pump lacks a pressure wall, so that weight and space are saved. Manufacturing, assembly and changes are also simplified.

In Bohrungen der Flansche eingesetzte Schrauben führen zu einer einfachen und sicheren Befestigung der Pumpe an der Verbrauchsvorrichtung.Screws inserted in the bores of the flanges lead to a simple and secure attachment of the pump to the consumption device.

Derjenige, der eine Pumpe für eine Vorrichtung benötigt, braucht nur dafür zu sorgen, daß unabhängig von der gewünschten Pumpengröße und Pumpenart immer dieselben zwei Öffnungen gleicher Größe mit demselben Abstand an der Außenwand oder an einer Zwischenwand vorhanden sind, um dann die Pumpe gewünschter Leistung zu bestellen und zu befestigen.The one who needs a pump for a device need only ensure that regardless of the desired pump size and pump type, the same two openings of the same size are always present at the same distance on the outer wall or on an intermediate wall, in order then to give the pump the desired power order and fasten.

Es ist zwar an sich bekannt mehrere Pumpen als einzelne Stufen hintereinanderzuschalten und hierbei die Außenflächen der Pumpen aneinander zu befestigen. Hierbei befinden sich aber Einund Auslaß jeder Pumpe an gegenüberliegenden Seiten und ferner werden diese einzelnen Pumpenstufen nicht direkt ohne Zwischenteile an Verbrauchsvorrichtungen befestigt.It is known per se to connect several pumps in series as individual stages and to fasten the outer surfaces of the pumps together. Here, however, the inlet and outlet of each pump are located on opposite sides and furthermore these individual pump stages are not directly attached to consumption devices without intermediate parts.

Eine besonders einfache Montage wird dann ermöglicht, wenn die das äußere Ende des Auslasses bildende Öffnung achsparallel zur Laufradachse und in der Ebene der Seitenwand des Pumpengehäuses liegt.A particularly simple assembly is made possible when the opening forming the outer end of the outlet is parallel to the axis of the impeller and in the plane of the side wall of the pump housing.

Vorzugsweise wird vorgeschlagen, daß die Seitenwand des Pumpengehäuses an der Wand der Verbrauchs- oder Anschlußvorrichtung direkt oder über Dichtungsmittel anliegend befestigbar ist. Eine besonders kleine Bauweise wird dann erreicht, wenn die die Einlaßöffnung aufweisende Seitenwand des Pumpengehäuses rechtwinklig zur Achse des Laufrades ist. Besonders vorteilhaft ist es, wenn die die Einlaßöffnung aufweisende Seitenwand des Pumpengehäuses kreisförmig und koaxial zum Läufer ist.It is preferably proposed that the side wall of the pump housing can be attached to the wall of the consumption or connection device directly or by means of sealing means. A particularly small construction is achieved when the side wall of the pump housing having the inlet opening is perpendicular to the axis of the impeller. It when the side wall of the pump housing having the inlet opening is circular and coaxial with the rotor is particularly advantageous.

Vorzugsweise wird vorgeschlagen, daß das Pumpengehäuse einen inneren, einen sich spiralförmig erweiternden Auslaßkanal bildenden Einsatz aufweist, der außen von einem am Antriebsmotor befestigten Außengehäuse umgeben ist, das mit seinen Seitenrändern an der Wand der Verbrauchsvorrichtung anliegt. Dies führt nicht nur zu einer besonders druckdichten Verkapselung der Pumpe, sondern auch zu einer Auswechselbarkeit des inneren Einsatzes, der an die unterschiedlichsten Gegebenheiten anpaßbar ist Hierbei wird vorgeschlagen, daß der innere Einsatz die Anschlußfläche zur Verbrauchs- oder Anschlußvorrichtung bildet. Eine beliebige Drehstellung der Pumpe im eingebauten Zustand ist dann erreichbar, wenn der innere Einsatz im Außengehäuse drehverstellbar gelagert ist.It is preferably proposed that the pump housing has an inner insert which forms a spirally widening outlet channel and which is surrounded on the outside by an outer housing which is fastened to the drive motor and which lies with its side edges against the wall of the consumption device. This not only leads to a particularly pressure-tight encapsulation of the pump, but also to an interchangeability of the inner insert, which can be adapted to the most varied of conditions. It is proposed that the inner insert form the connection surface to the consumption or connection device. Any rotational position of the pump in the installed state can be reached if the inner insert in the outer housing is rotatably adjustable.

Von größtem Vorteil ist es, wenn die Seitenflächen von Flansch und Einsatz etwa in derselben Ebene liegen. Die Konstruktion läßt es vorteilhafterweise zu, daß zwischen der Pumpe und der an der Pumpe angeschlossenen Vorrichtung wertere Vorrichtungen zwischengeschaltet sind, deren Seitenflächen zueinander parallel aneinander befestigt sind und die von den Pumpenströmen durchflossen sind.It is of the greatest advantage if the side surfaces of the flange and insert are approximately in the same plane. The construction advantageously allows further devices to be interposed between the pump and the device connected to the pump, the side faces of which are fastened to one another in parallel and through which the pump flows flow.

Eine schnelle und einfache Montage wie Demontage wird dadurch ermöglicht, daß die Pumpe, insbesondere das (Außen)Gehäuse durch Bajonettverschluß an der Verbrauchs- oder Anschlußvorrichtung befestigt ist. Herstellung und Montage werden erleichtert, wenn Motorgehäuse und Pumpengehäuse, insbesondere Pumpenaußengehäuse einstückig ausgeführt sind. Alternativ oder zusätzlich können hierfür das Spaltrohr des Motors und das Pumpengehäuse, insbesondere Pumpenaußengehäuse einstückig ausgeführt sein.A quick and easy assembly and disassembly is made possible in that the pump, in particular the (outer) housing, is fastened to the consumption or connection device by a bayonet lock. Manufacturing and assembly are facilitated if the motor housing and pump housing, in particular the pump outer housing, are made in one piece. Alternatively or additionally, the can of the motor and the pump housing, in particular the pump outer, can be used for this housing be made in one piece.

Vorzugsweise wird vorgeschlagen, daß zwischen der Pumpe und der Verbrauchsvorrichtung ein Teil befestigt ist, das um ein mit dem Pumpeneinlaß fluchtenden Rohr eine koaxiale Ringkammer bildet, die mit dem Pumpenauslaß und dem Einlaß der Verbrauchsvorrichtung verbindbar ist. Hierdurch kann die Pumpe in jeder Drehstellung unabhängig von der Lage des Verbrauchereinlasses befestigt werden. Die Größe des Verbrauchereinlasses kann unterschiedlich sein und es können mehrere Verbrauchereinlässe vorhanden sein.It is preferably proposed that a part is attached between the pump and the consumption device, which forms a coaxial annular chamber around a pipe aligned with the pump inlet, which can be connected to the pump outlet and the inlet of the consumption device. As a result, the pump can be attached in any rotational position regardless of the position of the consumer inlet. The size of the consumer inlet can vary and there can be multiple consumer inlets.

Auch können alle zwischen Pumpe und Verbrauchs- oder Anschlußvorrichtung befestigten scheibenförmigen Vorrichtungen oder Teile um eine Achse klappsymmetrisch sein, die die Pumpendrehachse schneidet und zu dieser rechtwinklig ist, so daß sich bei einer Drehung um 180 ° eventuelle Anschlüsse oder Bedienelemente auf der anderen Seite befinden.Also, all disk-shaped devices or parts attached between the pump and the consumption or connection device can be fold-symmetrical about an axis which intersects the pump rotation axis and is perpendicular to it, so that any connections or control elements are on the other side when rotated through 180 ° .

Für eine Verwendung der erfindungsgemäßen Kreiselpumpe wird vorteilhafterweise vorgeschlagen, daß sie an der flachen Außen- oder Zwischenwand eines Heizungskanals, Heizgerätes, Flüssigkeitsvorratsbehälters, Wärmeaustauschers, Pumpengehäuses, Rohranschlusses, Heißwassergerätes, Entlüfters, Schmutzfängers, Differenzdruckreglers, Meßwertaufnehmers, Vordrallreglers, Strömungsteilers, Mischers, einer Absperrvorrichtung oder einer Schwerkraftbremse befestigbar ist, wobei die Außen- oder Zwischenwand zwei Öffnungen aufweist, die im Abstand und/oder Durchmesser mit denen der Seitenwand des Pumpengehäuses übereinstimmen.For use of the centrifugal pump according to the invention it is advantageously proposed that it be on the flat outer or intermediate wall of a heating duct, heater, liquid storage container, heat exchanger, pump housing, pipe connection, hot water device, breather, dirt trap, differential pressure regulator, measured value sensor, pre-swirl shut-off device, mixer, flow divider, flow control or a gravity brake can be fastened, the outer or intermediate wall having two openings which correspond in spacing and / or diameter to those of the side wall of the pump housing.

Ausführungsbeispiele der erfindungsgemäßen Pumpe und Vorrichtungen, an die die Pumpe anschließbar ist, sind in den Zeichnungen dargestellt und werden im folgenden näher beschrieben. Es zeigen:

  • Fig. 1 einen axialen Schnitt durch die Pumpe mit angesetztem Elektromotor,
  • Fig. 2 einen Teilschnitt durch eine Verbrauchsvorrichtung, insbesondere die Wand eines Heizungskessels, Wandgasheizgerätes oder eines Boilers, an der die Pumpe befestigbar ist,
  • Fig. 3 einen Schnitt durch eine Entlüftungsvorrichtung, an die die Pumpe seitlich befestigbar ist,
  • Fig. 4 eine Ansicht der Seilenwand der Pumpe, mit der diese an einer Vorrichtung befestigbar ist,
  • Fig. 5 einen Schnitt durch die vordere Seitenwand des vordersten Kesselgliedes eines Heizungskessels,
  • Fig. 6 einen Schnitt durch Rohranschlüsse, die auf der Pumpenseitenwand befestigbar sind,
  • Fig. 7 eine perspektivische Ansicht eines zwischen Verbraucher und Pumpe befestigbaren Teils mit Ringkammer.
Exemplary embodiments of the pump according to the invention and devices to which the pump can be connected are shown in the drawings and are described in more detail below. Show it:
  • 1 shows an axial section through the pump with the electric motor attached,
  • 2 shows a partial section through a consumption device, in particular the wall of a heating boiler, wall gas heater or boiler, to which the pump can be attached,
  • 3 shows a section through a ventilation device to which the pump can be laterally attached,
  • 4 is a view of the rope wall of the pump, with which it can be attached to a device,
  • 5 shows a section through the front side wall of the foremost boiler element of a heating boiler,
  • 6 shows a section through pipe connections which can be fastened on the pump side wall,
  • Fig. 7 is a perspective view of a part attachable between the consumer and the pump with an annular chamber.

Die Spaltrohrpumpe wird als Warmwasserpumpe, insbesondere in Heizungsanlagen eingesetzt.The canned pump is used as a hot water pump, especially in heating systems.

Die Pumpe 1 weist ein Pumpengehäuse 2, 11, insbesondere aus Kunststoff oder Metall auf, in dem ein Laufrad 3 drehbar angeordnet ist und in dem ein rohrförmiger Einlaß 4 koaxial zum Laufrad eingeformt ist, durch den das Laufrad direkt angeströmt wird. Um das Laufrad herum befindet sich ein sich spiralförmig erweiternder Auslaßkanal 5.The pump 1 has a pump housing 2, 11, in particular made of plastic or metal, in which an impeller 3 is rotatably arranged and in which a tubular inlet 4 is formed coaxially to the impeller, through which the impeller is directly flown. A spirally widening outlet channel 5 is located around the impeller.

Das Gehäuse 2 ist kreisscheibenförmig, wobei die Höhe H der zylindrischen Außenwand wesentlich geringer ist als der Durchmesser der kreisförmigen ebenen Pumpenseitenwand 6, die rechtwinklig und koaxial zur Achse des Laufrades 3 liegt.The housing 2 is in the form of a circular disk, the height H of the cylindrical outer wall being substantially less than the diameter of the circular flat pump side wall 6, which is at right angles and coaxial to the axis of the impeller 3.

In der Seitenwand 6 mündet der Einlaß 4 mit einer Einlaßöffnung 7 und der Auslaßkanal 5 mil einer Auslaßöffnung 8. Die Öffnungen 7 und 8 befinden sich in der Ebene der Seitenwand 6. Auf der der Seitenwand 6 gegenüberliegenden Seite des Pumpengehäuses 2 ist ein Spaltrohr-Elektromotor 9 koaxial zum Laufrad 3 befestigt, der mit seiner Antriebsachse 10 im Laufrad 3 einliegt.In the side wall 6, the inlet 4 opens with an inlet opening 7 and the outlet channel 5 with an outlet opening 8. The openings 7 and 8 are in the plane of the side wall 6. On the side of the pump housing 2 opposite the side wall 6 is a canned electric motor 9 coaxially attached to the impeller 3, which lies with its drive shaft 10 in the impeller 3.

Das Pumpengehäuse 2 besteht aus einem inneren Einsatz 2, der das Laufrad 3 eng umgibt und den sich spiralförmig erweiternden Auslaßkanal 5 um das Laufrad herum bildet, und einem den Einsatz 2 umgebenden Außengehäuse 11, das am Elektromotor 9 befestigt ist und das Dichtungen 13 trägt, die in der Ebene der Seitenwand 6 liegen. Der Einsatz 2 bildet somit die ebene Schnittstelle zu den Verbrauchs- oder Anschlußvorrichtungen.The pump housing 2 consists of an inner insert 2 which closely surrounds the impeller 3 and forms the spirally widening outlet channel 5 around the impeller, and an outer housing 11 surrounding the insert 2, which is fastened to the electric motor 9 and carries seals 13, which are in the plane of the side wall 6. The insert 2 thus forms the flat interface to the consumption or connection devices.

Das als Druckbehälter wirkende Außengehäuse 11 bildet parallel zur Seitenwand 6 Flansche 12 aus, die Bohrungen 14 besitzen, um Schrauben aufnehmen zu können. Mit diesen nicht dargestellten Schrauben ist das Außengehäuse 11 und damit die gesamte Pumpe an Verbrauchsvorrichtungen befestigbar.The outer housing 11, which acts as a pressure vessel, forms flanges 12 parallel to the side wall 6, which have bores 14 in order to be able to accommodate screws. With these screws, not shown, the outer housing 11 and thus the entire pump can be fastened to consumption devices.

In dieses Außengehäuse 11 können Laufräder 3 und Einsätze 2 unterschiedlicher Leistungen eingeschoben werden.Impellers 3 and inserts 2 of different powers can be inserted into this outer housing 11.

Hierzu kann naht nur das Laufrad 3 durch ein unterschiedlich geformtes Laufrad ersetzt werden, sondern es können der das Laufrad umgebende spiralförmige Kanal 5 als Buch der Einlaß an das jeweilige Laufrad und die gewünschte Leistung als auch an den jeweiligen Drehzahlbereich angepaßt sein. Ferner können die im Einsatz 2a befindlichen Einlaß- und Auslaßöffnungen 7, 8 in ihrem Abstand zueinander als auch in ihrer Anordnung in der ebenen Seitenwand 6 an die Gegebenheiten der Verbrauchs- oder Anschlußvorrichtungen angepaßt sein. Es genügt den Einsatz 2a zu wechseln um den gestellten Anforderungen gerecht zu werden.For this purpose, only the impeller 3 can be replaced by a differently shaped impeller, but the spiral channel 5 surrounding the impeller can be adapted as a book of the inlet to the respective impeller and the desired power as well as to the respective speed range. Furthermore, the inlet and outlet openings 7, 8 in use 2a can be adapted to the conditions of the consumption or connection devices in terms of their distance from one another and also in their arrangement in the flat side wall 6. It is sufficient to change the insert 2a to meet the requirements.

Im Gegensatz zum Ausführungsbeispiel nach Fig. 1 kann der Auslaß am Umfang des Gehäuses radial oder tangential angeordnet sein. Von Bedeutung ist auch, daß die Seitenwand 6 des Pumpengehäuses 2 oder das Außengehäuse 11 am Außenrand mindestens einen Flansch 12 aufweist, mit dem die Seitenwand an der Wand der Verbrauchsvorrichtung befestigbar ist.In contrast to the embodiment of FIG. 1, the outlet on the circumference of the housing can be arranged radially or tangentially. It is also important that the side wall 6 of the pump housing 2 or the outer housing 11 has at least one flange 12 on the outer edge, with which the side wall can be fastened to the wall of the consumption device.

Der innere Einsatz 2 kann kleiner als in Flur 1 dargestellt ausgeführt sein. Es kann ausreichen, wenn er nur die Einlaßöffnung 7 und den Leitapparat für das Laufrad 3 bildet. Der Einsatz 2 kann auch aus mehreren Teilen bestehen. Besonders einfach in der Herstellung ist er dann, wenn er aus Kunststoff besteht. Insbesondere hierdurch wird es möglich und wirtschaftlich vertretbar, der Pumpe verschieden geformte Einsätze beizulegen, so daß der Anwender vor dem Einbau die Pumpenleistung ändern kann.The inner insert 2 can be made smaller than shown in hallway 1. It may be sufficient if it only forms the inlet opening 7 and the diffuser for the impeller 3. The insert 2 can also consist of several parts. It is particularly easy to manufacture if it is made of plastic. In particular, this makes it possible and economically justifiable to insert differently shaped inserts into the pump so that the user can change the pump output before installation.

In einer Ausführung ist die Pumpe, insbesondere das (Außen)Gehäuse durch Bajonettverschluß an der Verbrauchs- oder Anschlußvorrichtung befestigt. Motorgehäuse und Pumpengehäuse, insbesondere Pumpenaußengehäuse 11 sind einstückig ausgeführt. Alternativ sind das Spaltrohr des Motors und das Pumpengehäuse, insbesondere Pumpenaußengehäuse 11 einstückig ausgeführt. Figur 7 zeigt eine Ausführung, bei der zwischen der Pumpe und der Verbrauchsvorrichtung ein Teil 30 befestigt ist, das um ein mit dem Pumpeneinlaß fluchtendes Rohr 32 eine koaxiale Ringkammer 31 bildet, die mit dem Pumpenauslaß und dem Einlaß der Verbrauchsvorrichtung verbindbar ist.In one embodiment, the pump, in particular the (outer) housing, is fastened to the consumption or connection device by a bayonet lock. Motor housing and pump housing, in particular pump outer housing 11, are made in one piece. Alternatively, the can of the motor and the pump housing, in particular the pump outer housing 11, are made in one piece. FIG. 7 shows an embodiment in which a part 30 is fastened between the pump and the consumption device, which forms a coaxial annular chamber 31 around a pipe 32 aligned with the pump inlet and can be connected to the pump outlet and the inlet of the consumption device.

Unter Verbrauchsvorrichtungen werden all die Geräte, Teile und Vorrichtungen verstanden, an denen üblicherweise eine Pumpe befestigt wird. Dies können untar anderem folgende sein: ein Heizungskessel, Heizgerät, Heißwassergerät, Flüssigkeitsvorratsbehälter, Wärmeaustauscher, Pumpengehäuse, Rohranschluß, Entlüfter, Schmutzfänger, Differenzdruckregler, Meßwertaufnehmer, Vordrallregler, Strömungsteiler, Mischer, eine Absperrvorrichtung oder eine Schwerkraftbremse.Consumption devices are understood to mean all the devices, parts and devices to which a pump is usually attached. These can include the following: a boiler, heater, hot water device, liquid storage tank, heat exchanger, pump housing, pipe connection, breather, dirt trap, differential pressure regulator, sensor, pre-swirl regulator, flow divider, mixer, a shut-off device or a gravity brake.

In Fig. 3 ist eine Entlüftungsvorrichtung 15 gezeigt, an deren linken flachen Seitenwand die Pumpe 1 anschraubbar ist. Diese Entlüftungsvorrichtung mit Entlüftungskammer 16 und Gitter 17 als auch oberem Entlüfter 18 kann mit der der Pumpe gegenüberliegenden Seite an eine weitere Vorrichtung 19 (Fig. 2) angeschraubt werden, die ein Heizgerät, Boiler, Kessel oder eine andere Verbrauchseinrichtung sein kann. Hierdurch bildet die Entlüftungsvorrichtung 15 ein Zwischenteil zwischen der Vorrichtung 19 und der Pumpe 1, die von den beiden Wasserströmen durchflossen wird. Durch den Kanal 20 saugt die Pumpe Wasser über die Entlüftungskammer 16 zur Einlaßöffnung 7 und drückt dann dieses Wasser über die Öffnung 8 und den Durchlaufstutzen 21 zum Kanal 22 der Vorrichtung 19 zurück. Öffnung 8, Durchlaufstutzen 21 und Kanal 22 sind hierbei zueinander koaxial. Ferner ist die Einlaßöffnung 7 und der Kanal 20 zueinander koaxial und die Entlüftungskammer 16 in gleicher Höhe.In Fig. 3 a venting device 15 is shown, on the left flat side wall of the pump 1 can be screwed. This ventilation device with ventilation chamber 16 and grille 17 as well as the upper vent 18 can be screwed with the side opposite the pump to another device 19 (FIG. 2), which can be a heater, boiler, boiler or other consumer device. As a result, the ventilation device 15 forms an intermediate part between the device 19 and the pump 1, through which the two water flows flow. Through the channel 20, the pump sucks water through the ventilation chamber 16 to the inlet opening 7 and then presses this water back through the opening 8 and the flow nozzle 21 to the channel 22 of the device 19. Opening 8, flow connector 21 and channel 22 are coaxial with each other. Furthermore, the inlet opening 7 and the channel 20 are coaxial with one another and the ventilation chamber 16 is at the same height.

Die Pumpe kann an einer Blechwand 23, wie sie in Fig. 2 dargestellt ist, befestigt werden, wobei diese Blechwand Teil irgendeines Gerätes ist. Stattdessen kann aber auch die Pumpe an der Außenwand 24 eines gußeisernen Kesselgliedes 25 befestigt werden (Fig. 5). In Fig. 6 ist ferner ein Rohranschlußteil 26 gezeigt, an dem die Pumpe befestigbar ist, so daß hierdurch aus der Pumpe 1 eine übliche Pumpe mit radialen oder tangentialen Rohranschlüssen wird. Ein solches flaches Anschlußteil kann auch an der Pumpe seitlich befestigt werden, um einen radialen oder tangentialen Auslaß zu schaffen. Ferner kann ein flaches Anschlußteil befestigt werden, das auf der der Pumpe abgewandten Seitenfläche eine konkav gekrümmte Außenfläche für Verbraucher bildet, die eine entsprechend konvex gewölbte Anschlußfläche aufweisen.The pump can be attached to a sheet metal wall 23, as shown in Fig. 2, which sheet metal wall is part of any device. Instead, the pump can also be attached to the outer wall 24 of a cast iron boiler member 25 (FIG. 5). In Fig. 6, a pipe connection part 26 is also shown, to which the pump can be fastened, so that this turns the pump 1 into a conventional pump with radial or tangential pipe connections. Such a flat connection part can also be attached laterally to the pump in order to create a radial or tangential outlet. Furthermore, a flat connection part can be fastened, which forms a concavely curved outer surface for consumers on the side surface facing away from the pump, which has a correspondingly convex connection surface.

Bei all diesen Teilen 15, 19, 25 oder 26 sind der Abstand der Öffnungen 27, 28, auf die die Öffnungen 7, 8 der Pumpe zur Anlage gelangen, stets im selben Abstand voneinander und von gleichem Durchmesser entsprechend den Öffnungen 7, 8. Hierdurch lassen sich die unterschiedlichsten Pumpen an den Vorrichtungen befestigen, solange der Abstand der Öffnungen 7, 8 und deren Durchmesser gleich ist. Es lassen sich also Pumpen unterschiedlicher Leistungen befestigen, ohne den Abstand der Kanäle bzw. Öffnungen 27, 28 an den Verbrauchsvorrichtungen ändern zu müssen. Sind aber andere Abstände der Öffnungen 7, 8 voneinander erforderlich, so kann der innere Einsatz 2a gegen einen Einsatz mit Öffnungen ausgetauscht werden, deren Abstand dem gewünschten entspricht.In all of these parts 15, 19, 25 or 26, the distance between the openings 27, 28, on which the openings 7, 8 of the pump come to rest, are always at the same distance from one another and of the same diameter corresponding to the openings 7, 8. As a result a wide variety of pumps can be attached to the devices as long as the distance between the openings 7, 8 and their diameter is the same. Pumps of different capacities can thus be attached without having to change the spacing of the channels or openings 27, 28 on the consumption devices. However, if other distances between the openings 7, 8 from one another are required, the inner insert 2a can be exchanged for an insert with openings whose distance corresponds to the desired one.

Zwischen der Pumpe und der an der Pumpe angeschlossenen Vorrichtung können weitere Vorrichtungen zwischengeschaltet sein, deren Seilenflächen zueinander parallel aneinander befestigt sind und die von den Pumpenströmen durchflossen sind. Hierdurch wird eine kleinbauende, einfach zu montierende Sandwichbauweise erreicht. Von besonderer Bedeutung ist auch, daß für jede Leistungsgröße passend ein Einsatz 2a und ein Laufrad 3 eingesetzt werden kann.Additional devices can be interposed between the pump and the device connected to the pump, the cable surfaces of which are fastened to one another in parallel and through which the pump currents flow. As a result, a small-sized, easy-to-assemble sandwich construction is achieved. It is also of particular importance that an insert 2a and an impeller 3 can be used for each output size.

Um zuzulassen, daß die jeweiligen Anschlüsse auf der einen oder anderen Sehe der Zwischenvorrichtungen sein können, sind alle zwischen Pumpe und Verbrauchs- oder Anschlußvorrichtung 15, 19, 25, 26 befestigten scheibenförmigen Vorrichtungen 15 oder Teile 30 um eine Achse klappsymmetrisch, die die Pumpendrehachse schneidet und zu dieser rechtwinklig ist.In order to allow the respective connections to be on one or the other of the intermediate devices, all disk-shaped devices 15 or parts 30 fastened between the pump and the consumption or connection device 15, 19, 25, 26 are fold-symmetrical about an axis which intersects the pump rotation axis and to this is rectangular.

In einer weiteren zeichnerisch nicht dargestellten Alternative kann der Pumpenauslaß bzw. der Druckstutzen radial oder tangential aus dem Gehäuse herausragen.In a further alternative, not shown in the drawing, the pump outlet or the pressure port can protrude radially or tangentially from the housing.

Claims (16)

1. Centrifugal pump with canned motor and one single impeller (3) arranged in a pump housing (2) comprising an inlet and an outlet (4, 5) entering, respectively leaving the housing (2) through a side wall that is essentially flat in one plane, whereby the outer ends of the orifices (7) forming the inlet (4) and the outlet (5) lie in the plane of the flat side wall (6) of the pump housing (2, 11),
characterized in that
- the pump housing (2, 11) may, by means of this flat side wall (6), be mounted in direct contact with or via sealing means (13) to the flat wall (23, 24) of a consumer device (15, 19, 25, 26) comprising the appropriate orifices, and
- that the side wall (6) of the pump housing (2, 11) comprises at least one flange (12) on its outer edge, with which the side wall may be mounted to the wall of the consumer device.
2. Centrifugal pump according to Claim 1, characterized in that the outer end of the orifice (8) forming the outlet (5) is parallel to the axis of the impeller and lies in the plane of the side wall (6) of the pump housing (2, 11).
3. Centrifugal pump according to Claim 1 or 2, characterized in that the inlet (4) lies coaxial with the impeller (3).
4. Centrifugal pump according to any of the above Claims, characterized in that the side wall (6) comprising the inlet orifice (7) of the pump housing (2, 11) is perpendicular to the axis of the impeller (3).
5. Centrifugal pump according to any of the above Claims, characterized in that the side wall (6) comprising the inlet orifice (7) of the pump housing (2, 11) is circular in shape and coaxial with the impeller (3).
6. Centrifugal pump according to any of the above Claims, characterized in that the pump housing comprises an inner insert (2) forming an outlet channel (5) widening in a volute that is enclosed on the outside by an outer housing (11) mounted to a drive motor (9), and whose side edges make contact with the wall (23, 24) of the consumer device (15, 19, 25, 26).
7. Centrifugal pump according to Claim 6, characterized in that the inner insert (2) forms the surface connecting with the consumer device (15, 19, 25, 26).
8. Centrifugal pump according to Claim 6, characterized in that the inner insert (2) in the outer housing (11) is mounted so that it may be adjusted rotationally.
9. Centrifugal pump according to Claims 7 or 8, characterized in that the side faces of flange (12) and insert (2) are located in roughly the same plane.
10. Centrifugal pump according to any of the above Claims, characterized in that additional connection or consumer devices (15) are installed between the pump (1) and the device (19, 25) connected to the pump, the side faces of which are mounted together in line and parallel with one another and through which pass the pump flows.
11. Centrifugal pump according to Claim 10, characterized in that a part (30) is mounted between the pump and the consumer device, forming a coaxial annular chamber (31) around a tube (32) aligned with the pump inlet and capable of being connected to the pump outlet and the inlet of the consumer device.
12. Centrifugal pump according to Claim 10 or 11, characterized in that all disk-shaped devices (15) or parts (30) mounted between the pump and the consumer device (15, 19, 25, 26) are symmetrical when pivoted around one axis that intersects with the pump's axis of rotation and is perpendicular to it.
13. Centrifugal pump according to any of the above Claims, characterized in that the pump, more particularly the (outer) housing may be mounted to the consumer device by means of a quarter-turn fastener.
14. Centrifugal pump according to any of the above claims, characterized in that the motor casing and the pump housing, more particularly the pump outer housing (11) are executed in one piece.
15. Centrifugal pump according to any of the above Claims, characterized in that the can of the motor as well as the pump housing, more particularly the pump outer housing (11) are executed in one piece.
16. Use of a centrifugal pump according to any of the above claims, characterized in that it (1) may be mounted to the flat outer or intermediate wall (23, 24) of a heater, fluid storage tank, heat exchanger, pump housing, water heater, venting device, dirt trap, differential pressure controller, transducer, prerotation controller, flow divider, mixer, a shut-off device or a gravity brake, whereby the outer or intermediate wall (23, 24) comprises two orifices (27, 28) corresponding in their location to each other and/or their diameters with those (7, 8) of the side wall (6) of the pump housing (2, 11).
EP86110700A 1985-09-21 1986-08-02 Centrifugal pump Expired - Lifetime EP0218031B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86110700T ATE49632T1 (en) 1985-09-21 1986-08-02 CENTRIFUGAL PUMP.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3533781 1985-09-21
DE3533781 1985-09-21
DE3624917 1986-07-23
DE19863624917 DE3624917A1 (en) 1985-09-21 1986-07-23 CENTRIFUGAL PUMP

Publications (3)

Publication Number Publication Date
EP0218031A1 EP0218031A1 (en) 1987-04-15
EP0218031B1 EP0218031B1 (en) 1990-01-17
EP0218031B2 true EP0218031B2 (en) 1994-10-12

Family

ID=25836241

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86110700A Expired - Lifetime EP0218031B2 (en) 1985-09-21 1986-08-02 Centrifugal pump

Country Status (3)

Country Link
EP (1) EP0218031B2 (en)
DE (2) DE3624917A1 (en)
ES (1) ES2000984A6 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4021410A1 (en) * 1990-07-06 1992-01-16 Oplaender Wilo Werk Gmbh DOUBLE CENTRIFUGAL PUMP
DE4221463A1 (en) * 1992-05-22 1993-11-25 Wilo Gmbh Centrifugal pump with shaded-pole motor - has spiral housing surrounding impeller with flange of complementary width enabling circular fixing ring to be used
DE9416551U1 (en) * 1994-10-14 1994-12-01 Wilo Gmbh, 44263 Dortmund Centrifugal pump with screw connection
DE19511027A1 (en) * 1995-03-28 1996-10-02 Wilo Gmbh Centrifugal pump with ventilation
JP3514907B2 (en) * 1996-04-05 2004-04-05 本田技研工業株式会社 Absorption refrigerator
DE29704753U1 (en) 1997-03-15 1997-05-15 Grundfos A/S, Bjerringbro Pourable pump housing for a motor pump unit for mounting on a flat wall surface of a device
DE19819723A1 (en) * 1998-05-02 1999-11-04 Wilo Gmbh Fastening between pump and motor
AT410574B (en) * 1998-10-22 2003-06-25 Tcg Unitech Ag COOLING WATER PUMP FOR AN INTERNAL COMBUSTION ENGINE
DE102005049203A1 (en) * 2005-10-14 2007-04-19 Ryll-Tech Gmbh Heating boiler, for use in building, has adapter provided with main opening and arranged in housing such that pump is inserted into opening from outside and activated for guiding of fluid into heat exchanger circuit

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2322924A (en) * 1940-02-05 1943-06-29 Hoover Co Method of making motors
US2390279A (en) * 1943-09-10 1945-12-04 Buda Co Internal-combustion engine
FR1000875A (en) * 1949-11-28 1952-02-18 Improvements to pumps, more specifically to fire pumps
DE1097819B (en) * 1959-04-09 1961-01-19 Siemens Ag Drain pump for washing machines u. Like. With a housing made of plastic or thin-walled metal
SE362124B (en) * 1968-10-17 1973-11-26 Nash Engineering Co
DE2541422B2 (en) * 1975-09-17 1979-04-05 Schmalenberger Gmbh & Co, 7400 Tuebingen Motor-pump unit with a pump housing consisting of at least two housing halves
DE2640374A1 (en) * 1976-09-08 1978-03-09 Guenther Dipl Ing Boes Motorised pump for installing into central heating pipelines - has inlet and outlet connections on pipe centre line
DE3220448C1 (en) * 1982-05-29 1983-08-11 Grundfos A/S, 8850 Bjerringbro Pump unit for heating and domestic water systems

Also Published As

Publication number Publication date
EP0218031A1 (en) 1987-04-15
ES2000984A6 (en) 1988-04-01
DE3668356D1 (en) 1990-02-22
DE3624917A1 (en) 1987-03-26
EP0218031B1 (en) 1990-01-17

Similar Documents

Publication Publication Date Title
DE4438182C2 (en) Axialkleinventilator
EP0464355B1 (en) Duplex centrifugal pump
DE10116671B4 (en) Circulation pump with heating device
EP0218031B2 (en) Centrifugal pump
EP0874201B1 (en) Assembly for a compact heating installation
DE20106595U1 (en) Blower fan with a double inlet arrangement
DE19822704B4 (en) Gas-separating process water circulation pump
EP0918197B2 (en) Assembly for a compact heating installation
AT398813B (en) FAN UNIT
EP0131872B1 (en) Heater for small spaces
EP0866280B1 (en) Connection adapter
DE8527065U1 (en) Centrifugal pump
EP2944825A1 (en) Pump housing with three supports
DE2163025A1 (en) Self-priming high pressure pump
DE9416551U1 (en) Centrifugal pump with screw connection
DE20317171U1 (en) Blower housing has the outer wall fitted with radial vanes to create radial inlet ducts to increase the inlet air flow and reduce noise
DE9208801U1 (en) Pump unit
EP0264486B1 (en) Blower, particularly a duct blower
DE1993797U (en) ELECTRIC SUBMERSIBLE PUMP WITH VERTICAL SHAFT.
DE1978948U (en) INLINE PUMP.
DE9116263U1 (en) Blowers for conveying gaseous media
DE3448204C2 (en) Fan
EP1033495A2 (en) Adaptor for a heating or cooling system
DE2734479A1 (en) FUEL PUMP, IN PARTICULAR FOR MOTOR VEHICLES
DE973891C (en) Air heater with centrifugal fan

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 CH DE FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19870929

17Q First examination report despatched

Effective date: 19880906

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO ROMA S.P.A.

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI NL SE

REF Corresponds to:

Ref document number: 49632

Country of ref document: AT

Date of ref document: 19900215

Kind code of ref document: T

ET Fr: translation filed
REF Corresponds to:

Ref document number: 3668356

Country of ref document: DE

Date of ref document: 19900222

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

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: GRUNDFOS INTERNATIONAL A/S

Effective date: 19901011

NLR1 Nl: opposition has been filed with the epo

Opponent name: GRUNDFOS INTERNATIONAL A/S.

ITTA It: last paid annual fee
RIN2 Information on inventor provided after grant (corrected)

Free format text: NAASNER, GUENTER * STRELOW, GUENTER

PUAH Patent maintained in amended form

Free format text: ORIGINAL CODE: 0009272

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

Free format text: STATUS: PATENT MAINTAINED AS AMENDED

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO ROMA S.P.A.

27A Patent maintained in amended form

Effective date: 19941012

AK Designated contracting states

Kind code of ref document: B2

Designated state(s): AT BE CH DE FR GB IT LI NL SE

REG Reference to a national code

Ref country code: CH

Ref legal event code: AEN

NLR2 Nl: decision of opposition
NLR3 Nl: receipt of modified translations in the netherlands language after an opposition procedure
EAL Se: european patent in force in sweden

Ref document number: 86110700.1

EN3 Fr: translation not filed ** decision concerning opposition
GBTA Gb: translation of amended ep patent filed (gb section 77(6)(b)/1977)

Effective date: 19950215

ET3 Fr: translation filed ** decision concerning opposition
REG Reference to a national code

Ref country code: FR

Ref legal event code: RN

Ref country code: FR

Ref legal event code: FC

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

NLS Nl: assignments of ep-patents

Owner name: WILO GMBH TE DORTMUND, BONDSREPUBLIEK DUITSLAND.

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

Ref country code: SE

Payment date: 19950726

Year of fee payment: 10

Ref country code: AT

Payment date: 19950726

Year of fee payment: 10

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

Ref country code: BE

Payment date: 19950829

Year of fee payment: 10

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

Ref country code: AT

Effective date: 19960802

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

Ref country code: SE

Effective date: 19960803

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

Ref country code: BE

Effective date: 19960831

BERE Be: lapsed

Owner name: WILO-WERK G.M.B.H. & CO. PUMPEN- UND APPARATEBAU

Effective date: 19960831

EUG Se: european patent has lapsed

Ref document number: 86110700.1

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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

Ref country code: CH

Payment date: 20030806

Year of fee payment: 18

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

Ref country code: FR

Payment date: 20030807

Year of fee payment: 18

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

Ref country code: GB

Payment date: 20030812

Year of fee payment: 18

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

Ref country code: NL

Payment date: 20030831

Year of fee payment: 18

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: 20040802

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

Ref country code: DE

Payment date: 20040812

Year of fee payment: 19

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

Ref country code: LI

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

Effective date: 20040831

Ref country code: CH

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

Effective date: 20040831

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 NON-PAYMENT OF DUE FEES

Effective date: 20050301

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

Effective date: 20040802

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: FR

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

Effective date: 20050429

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20050301

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050802

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: 20060301