EP1460275A1 - Motor pump - Google Patents

Motor pump Download PDF

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Publication number
EP1460275A1
EP1460275A1 EP03006417A EP03006417A EP1460275A1 EP 1460275 A1 EP1460275 A1 EP 1460275A1 EP 03006417 A EP03006417 A EP 03006417A EP 03006417 A EP03006417 A EP 03006417A EP 1460275 A1 EP1460275 A1 EP 1460275A1
Authority
EP
European Patent Office
Prior art keywords
adapter
rotor
pump
motor pump
pump impeller
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
EP03006417A
Other languages
German (de)
French (fr)
Other versions
EP1460275B1 (en
Inventor
Jörgen Schmidt
Hans-Dieter Schmidt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Grundfos AS
Original Assignee
Grundfos AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Grundfos AS filed Critical Grundfos AS
Priority to DE50300854T priority Critical patent/DE50300854D1/en
Priority to EP03006417A priority patent/EP1460275B1/en
Publication of EP1460275A1 publication Critical patent/EP1460275A1/en
Application granted granted Critical
Publication of EP1460275B1 publication Critical patent/EP1460275B1/en
Anticipated expiration legal-status Critical
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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
    • F04D29/08—Sealings
    • F04D29/16—Sealings between pressure and suction sides
    • F04D29/165—Sealings between pressure and suction sides especially adapted for liquid pumps
    • F04D29/167—Sealings between pressure and suction sides especially adapted for liquid pumps of a centrifugal flow wheel
    • 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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • F04D29/0467—Spherical bearings
    • 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
    • F04D29/2261—Rotors specially for centrifugal pumps with special measures
    • F04D29/2266—Rotors specially for centrifugal pumps with special measures for sealing or thrust balance

Definitions

  • the invention relates to a motor pump, comprising a housing, an electric drive motor arranged in the housing, which has a stator and a rotor, and a pump impeller with a plurality of blades, which is connected to the rotor in a rotationally fixed manner, and which has a wall area having the liquid connections in the assembled state Motor pump lies freely opposite and interacts with the liquid connections.
  • Motor pumps of this type are generally known. They are often used in boilers that have a water inlet and a water outlet at a short distance from one another in a wall area.
  • the motor pump is designed in such a way that its pump impeller is exposed or essentially exposed, such that its suction mouth directly adjoins the water outlet of the wall area to which the motor pump is attached. Since the motor pump has no special pressure connection in this case, the pump impeller delivers directly into the water inlet of the boiler wall area. The circulation of the liquid in the boiler can thus take place optimally, with good pump conditions being maintained in the area of the pump impeller.
  • the object of the invention is therefore to provide a motor pump of the type mentioned in the introduction, the impeller of which is designed in such a way that it can be adapted in a simple and cost-effective manner to different water-carrying devices, but also with different designs of their housings, so that they are optimal Flow conditions in the impeller area are guaranteed.
  • the motor pump can be adapted to optimal flow conditions in the region of its impeller in a simple and cost-effective manner.
  • the motor pump can be used in many devices, in particular boilers, which are designed differently in their wall area for mounting the motor pump, which has two liquid connections, in such a way that in each case an axially larger space between the wall area and the pump impeller has to be bridged.
  • the motor pump itself can also have a housing that is of different design in the pump impeller area because of different motor pump heads. In both cases of the different design, it is now achieved that the motor pump according to the invention ensures optimal flow conditions in the area of its pump impeller and thus further guarantees its high efficiency.
  • the motor pump can be designed in such a way that it can be used as a basic version without an adapter, ie it can be mounted on a liquid-carrying device that does not require an adapter on the pump impeller.
  • the adapter is used when mounting the motor pump. This can be added to the basic version of the motor pump as a loose additional part or already mounted on its impeller. This adapter is used if the space between the pump impeller without adapter and the water outlet of the wall area in question is too large. Without the use of an adapter, there would be too large a free gap, which would degrade the flow conditions and thus the efficiency of the pump.
  • a still further advantage of the pump according to the invention is that the manufacture and storage of adapters represent a much smaller cost factor compared to motor pumps of the size required in each case with regard to their pump impeller.
  • an advantageous embodiment of the motor pump according to the invention is that the adapter is designed in the form of an annular disk with an annular shoulder, which is provided on the side of the annular disk facing away from the pump impeller, in the form of an annular disk or in the form of a hub-shaped component.
  • a clamping ring is provided which engages the pump impeller with a positive fit.
  • the rotor 1 shows a rotor 1 of an electric drive motor (not shown further) for a pump, which is also only partially shown.
  • the rotor 1 shown is, for example, a conventional permanent magnet rotor in partial spherical shape, which is shown in more detail in FIG. 3.
  • the rotor 1 can also be one with conventional winding coils.
  • the stator (not shown) suitable for the rotor 1 is constructed in a conventional manner in accordance with the electrical and other requirements.
  • the rotor 1 is directly connected to a pump impeller 2 in a rotationally fixed manner, so that the pump impeller is driven in rotation by the rotor.
  • the unit formed from the rotor 1 and the pump impeller 2 is centrally assigned an annular adapter 3 such that the adapter is detachably attachable to the pump impeller 2.
  • the adapter is provided with a clamping ring 4, as can be clearly seen from FIG. 1. With the help of this clamping ring, the adapter 3 is non-positively attached to the pump impeller 2.
  • the adapter 3 has on its back, which faces away from the pump impeller 2, an annular recess 5, into which the clamping ring 4 is inserted.
  • annular recess 5 into which the clamping ring 4 is inserted.
  • three recesses 6 are provided on the outer circumference of the adapter, into which three clamping fingers 7 of the clamping ring 4 engage (FIG. 1).
  • the recesses 6 and the clamping fingers 7 engaging therein thus form locking means around the clamping ring 4 to hold the adapter 3 and the adapter on the pump impeller 2 (Fig. 3).
  • the clamping ring 4 is preferably captively arranged on the adapter 3, so that the adapter forms a unit together with the clamping ring 4.
  • the captive nature of the clamping ring 4 can be brought about in that it is caulked in the usual manner after it has been inserted into the depression 5 or is fastened, for example, by spot welding.
  • the adapter 3 can be designed in various embodiments.
  • Figures 1, 2 and 3 show an example embodiment.
  • the embodiment of the adapter 3 shown in FIGS. 1, 2 and 3 consists of an annular disk 8 which is provided with an annular extension 9 on its side facing away from the pump impeller 2, the annular disk and the extension forming an integral component.
  • the annular extension 9 forms a type of hub and brings about an axial dimension A (FIG. 3) for bridging the above-mentioned intermediate space between the pump impeller and a wall area with liquid connections.
  • This wall area can be such a z. B. a boiler.
  • Which axial dimension A is selected depends on the boiler type. This axial dimension can also from the impeller-side housing part of the motor pump types, the devices for other liquid-carrying devices, for. B. piping systems are used depend.
  • the motor pump can also be used without the adapter 3 on the respective liquid-carrying device or in connection with its housing part on the impeller side.
  • the adapter 3 is usually attached to the motor pump as a loose additional part, so that at the installation location of the motor pump it can be decided whether the adapter on the pump impeller 3 must be used.
  • the adapter 3 can also be designed such that it only exists in the form of an annular disc, i. H. without shoulder 9.
  • the thickness of the annular disk is then essentially such that the aforementioned axial dimension A is at least in the suction mouth area of the pump impeller.
  • the procedure can be such that it is practically only in the form of an annular extension. In this form, it is comparable to the aforementioned annular extension 9.
  • the adapter 3 then forms a type of hub-shaped component.
  • the pump impeller 2 which has a front cover disk 2a, is fastened to the rotor 1 in such a way that the blades 2b provided on this cover disk face the rotor 1.
  • This configuration and arrangement of the pump impeller is also expedient in that the adapter 3 can then be attached in a simple manner by means of the clamping fingers 7 of the clamping ring 4 to the cover disk 2a of the impeller 2 (FIG. 3), on which it is centered and directly in contact ,
  • FIG. 3 shows a pump impeller 2 with a front cover disk 2a.
  • a pump impeller with only a rear cover disc on which the blades 2b are integrally present (not shown), so that the pump impeller 2 is free of a cover disk on its front side.
  • the adapter 3 which in this case has the shape of an annular disk with or without a shoulder 9, then lies firmly against the front of the blades of such a pump impeller, with the aid of the clamping ring 4.
  • the adapter thus performs two functions , namely its bridging function and also the function as a front cover plate.
  • the impeller 2 can also be designed in such a way that it has two cover disks in a conventional manner or that the blades are formed in one piece with the rotor 1.
  • the corresponding adapter is releasably attached to the pump impeller or to the blades, for. B. by means of clamping means.
  • the rotor 1 is of conventional design and is therefore generally known to the person skilled in the art.
  • the rotor 1 shown in FIG. 3 in the form of a partially spherical permanent magnet rotor is therefore only briefly explained.
  • the rotor 1 shown in FIG. 3 has a rotationally symmetrical carrier 10, on one side of which the pump impeller 2 is fastened with the adapter 3.
  • the carrier 10 essentially consists of a disk-shaped body 10a with a rear, cylindrical extension 10b.
  • a partially spherical shell magnet body 11 is fastened to the disk body 10a and the extension 10b by means of a thin shell 12.
  • a bearing body 13 is provided in the center of the disk body 10a or of the rotor 1, and is held in position by means of a bush 14.
  • An axial channel 15, which penetrates the disc body 10a from the impeller side in the direction of the extension 10b, ensures axial balancing of forces on the rotor during operation of the rotor 1.
  • the jacket 12 can also be designed such that it also directly clamps the pump impeller 2, which has a retaining ring 2 c, to the carrier 10, as shown in FIG. 3.
  • a fixed ball head 24 is arranged, which engages in the bearing body 13.
  • the ball head 24 and the bearing body 13 form a movable rotary bearing for the permanent magnet rotor 1 in such a way that this rotor can, in addition to its rotation, also be self-adjusting in order to be able to assume a perfectly rotating operating setting.
  • the housing part 19, the connections 20 and 21 of which can be connected to liquid-carrying pipelines, is provided with an inlet 25, which communicates with the suction connection 20, and with an outlet 26, which communicates with the pressure connection 21.
  • This housing part has an inner wall region 27 which is at a greater axial distance from the pump impeller 2.
  • the pump impeller is therefore provided with an adapter 3 in order to bridge the axial space between this wall region 27 and the pump impeller 2 in order to ensure good flow conditions and good efficiency in the suction mouth region of the pump impeller.
  • the adapter 3 also serves to keep the rotor 1 supported on the ball head 24 by the adapter coming into contact with the wall region 27, so that the rotor does not fall off the ball head. The rotor can thus safely resume its rotating operating function when the motor pump is switched on.
  • the head of the motor pump 18, which is only partially shown in FIG. 4 is replaced due to a defect in the motor pump, then this head is unscrewed from the thread 19a of the pump housing 19 which remains connected with liquid pipelines and replaced by a new motor pump head.
  • the adapter 3 is not required and is therefore not mounted on the pump impeller 2.
  • the pump impeller is then located with its suction mouth in the usual way near the wall area 27 of the pump housing part 19.
  • an adapter 3 must be mounted on the pump impeller 2 of the new motor pump head.
  • the motor pump partially shown in FIG. 4 essentially only the electrical stator for the rotary operation of the permanent magnet rotor 1 and the motor housing, which is screwed onto the pump housing part 19 at its thread 19a, are missing.
  • motor pump used in this description should be understood to mean that the aforementioned motor pump head alone, which essentially comprises the rotor 1 with the pump impeller 2 and the adapter 3, the electrical stator and the motor housing which can be screwed onto the thread 19a of the pump housing part 19 (both not shown) contains, is included.
  • the motor pump is used on a boiler, for example.
  • the motor pump can additionally contain the aforementioned motor pump housing part 19.
  • the motor pump is preferably installed in a pipeline system.
  • the housing part 19 is not removed from the piping system, but rather the motor pump head explained above is removed from the housing part 19 and replaced by a new motor pump head in which the pump impeller of the rotor must be provided with an adapter 3 or not, depending on the design of the new motor pump head.

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

Abstract

The pump has a housing, an electric motor with stator and rotor (1), and a pump rotor (2) connected to the motor rotor. The pump rotor has at least one ring-shaped adapter (3) fastened to its intake side, to bridge the intermediate space between it and the wall section opposite to it on the suction side, which contains the fluid connections. The adapter is formed like a ring disc (8) with ring-shaped shoulder (9) on the side away from the pump rotor, a ring plate, and a hub. The rotor is a semi-spherical permanent magnet rotor, with a pump rotor fixed to it. The pump may have a set of adapters, with different axial sizes to bridge different sized gaps.

Description

Die Erfindung geht aus von einer Motorpumpe, enthaltend ein Gehäuse, einen in dem Gehäuse angeordneten elektrischen Antriebsmotor, der einen Stator und einen Rotor aufweist, und ein mit dem Rotor drehfest verbundenes Pumpenlaufrad mit mehreren Schaufeln, das einem die Flüssigkeitsanschlüsse aufweisenden Wandbereich im montierten Zustand der Motorpumpe frei gegenüberliegt und mit den Flüssigkeitsanschlüssen zusammenwirkt.The invention relates to a motor pump, comprising a housing, an electric drive motor arranged in the housing, which has a stator and a rotor, and a pump impeller with a plurality of blades, which is connected to the rotor in a rotationally fixed manner, and which has a wall area having the liquid connections in the assembled state Motor pump lies freely opposite and interacts with the liquid connections.

Motorpumpen dieser Art sind allgemein bekannt. Sie werden häufig eingesetzt bei Heizkesseln, die in einem Wandbereich einen Wassereinlass und einen Wasserauslass mit geringem Abstand voneinander aufweisen. Die Motorpumpe ist in Anpassung daran so ausgebildet, dass ihr Pumpenlaufrad freiliegt oder im Wesentlichen freiliegt, derart, dass sein Saugmund sich unmittelbar an den Wasserauslass des Wandbereiches, an dem die Motorpumpe befestigt wird, anschließt. Da die Motorpumpe in diesem Fall keinen besonderen Druckstutzen aufweist, fördert das Pumpenlaufrad direkt in den Wassereinlass des Heizkesselwandbereiches. Somit kann die Umwälzung der Flüssigkeit in dem Heizkessel optimal erfolgen, wobei im Bereich des Pumpenlaufrades gute Pumpverhältnisse erhalten bleiben. Abhängig von der jeweiligen Kesselbauart ist es daher erforderlich, unterschiedliche Motorpumpen als Ersatz im Defektfall der Pumpe bereit zu halten, deren Laufrad in ihrem Saugmundbereich zu dem Wasserauslass des jeweiligen Heizkessels passt. Insbesondere die Lagerhaltung eines Vorrats an den jeweiligen Motorpumpen als Ersatzpumpen ist somit ein hoher Kostenfaktor. Es ist daher wünschenswert, eine Motorpumpe zur Verfügung zu haben, die auf einfache Weise für den jeweiligen Anwendungszweck im Bereich des Laufrades angepasst werden kann.Motor pumps of this type are generally known. They are often used in boilers that have a water inlet and a water outlet at a short distance from one another in a wall area. The motor pump is designed in such a way that its pump impeller is exposed or essentially exposed, such that its suction mouth directly adjoins the water outlet of the wall area to which the motor pump is attached. Since the motor pump has no special pressure connection in this case, the pump impeller delivers directly into the water inlet of the boiler wall area. The circulation of the liquid in the boiler can thus take place optimally, with good pump conditions being maintained in the area of the pump impeller. Depending on the type of boiler, it is therefore necessary to have different motor pumps available as replacements in the event of a defect in the pump, whose impeller in its suction mouth area matches the water outlet of the respective boiler. In particular, the storage of a supply of the respective motor pumps as replacement pumps is therefore a high cost factor. It is therefore desirable to have a motor pump available that can be easily adapted for the respective application in the area of the impeller.

Die Aufgabe der Erfindung besteht somit in der Bereitstellung einer Motorpumpe der einleitend angeführten Art, deren Laufrad so ausgestaltet ist, dass es auf einfache und kostengünstige Weise an bauartbedingt unterschiedliche wasserführende Einrichtungen, aber auch bei selbst unterschiedlicher Bauart ihres Gehäuses so angepasst werden kann, dass optimale Strömungsverhältnisse im Laufradbereich gewährleistet sind.The object of the invention is therefore to provide a motor pump of the type mentioned in the introduction, the impeller of which is designed in such a way that it can be adapted in a simple and cost-effective manner to different water-carrying devices, but also with different designs of their housings, so that they are optimal Flow conditions in the impeller area are guaranteed.

Die Lösung dieser Aufgabe ist in dem Anspruch 1 angeführt.The solution to this problem is set out in claim 1.

Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, dass die Motorpumpe auf einfache und kostengünstige Weise an optimale Strömungsverhältnisse im Bereich ihres Laufrades angepasst werden kann. Die Motorpumpe kann bei vielen Einrichtungen, insbesondere Heizkesseln eingesetzt werden, die in ihrem Wandbereich für die Montage der Motorpumpe, der zwei Flüssigkeitsanschlüsse aufweist, unterschiedlich ausgebildet sind, derart, dass jeweils ein axial größerer Zwischenraum zwischen dem Wandbereich und dem Pumpenlaufrad zu überbrücken ist. Des Weiteren kann die Motorpumpe aber auch selbst ein Gehäuse aufweisen, das im Pumpenlaufradbereich wegen unterschiedlicher Motorpumpenköpfe unterschiedlicher Bauart ist. In beiden Fällen der unterschiedlichen Bauart wird nunmehr erreicht, dass die Motorpumpe nach der Erfindung im Bereich ihres Pumpenlaufrades optimale Strömungsverhältnisse sicherstellt und damit ihren hohen Wirkungsgrad weiterhin gewährleistet. Die Motorpumpe kann so konstruiert sein, dass sie als Basisversion ohne Adapter verwendbar ist, d. h. z. B. an einer Flüssigkeit führenden Einrichtung montiert werden kann, die keinen Adapter am Pumpenlaufrad benötigt. Bei anderen Einrichtungen, insbesondere bei Heizkesseln, bei denen ein größerer Zwischenraum zwischen dem Pumpenlaufrad und dem die Flüssigkeitsanschlüsse aufweisenden Wandbereich der betreffenden Einrichtung zu überwinden ist, wird bei Montage der Motorpumpe der Adapter verwendet. Dieser kann der Basisversion der Motorpumpe als loses Zusatzteil beigefügt oder bereits an deren Laufrad montiert sein. Dieser Adapter wird somit verwendet, wenn der Zwischenraum zwischen dem Pumpenlaufrad ohne Adapter und dem Wasserauslass des betreffenden Wandbereichs zu groß ist. Ohne Einsetzen eines Adapters würde ein zu großer freier Spalt entstehen, der die Strömungsverhältnisse und damit den Wirkungsgrad der Pumpe verschlechtert. Selbstverständlich ist es möglich, mehrere Adapter, die in ihrem axialen Durchflussbereich eine unterschiedliche axiale Dicke aufweisen, als Bausatz zu verwenden. Ein noch weiterer Vorteil der erfindungsgemäßen Pumpe besteht darin, dass die Herstellung und Lagerhaltung von Adaptern im Vergleich zu Motorpumpen der jeweils erforderlichen Größe bezüglich ihres Pumpenlaufrades einen wesentlich kleineren Kostenfaktor darstellen.The advantages that can be achieved with the invention are, in particular, that the motor pump can be adapted to optimal flow conditions in the region of its impeller in a simple and cost-effective manner. The motor pump can be used in many devices, in particular boilers, which are designed differently in their wall area for mounting the motor pump, which has two liquid connections, in such a way that in each case an axially larger space between the wall area and the pump impeller has to be bridged. Furthermore, the motor pump itself can also have a housing that is of different design in the pump impeller area because of different motor pump heads. In both cases of the different design, it is now achieved that the motor pump according to the invention ensures optimal flow conditions in the area of its pump impeller and thus further guarantees its high efficiency. The motor pump can be designed in such a way that it can be used as a basic version without an adapter, ie it can be mounted on a liquid-carrying device that does not require an adapter on the pump impeller. In other devices, especially in boilers, where there is a larger space between the pump impeller and the wall area of the device in question which has the liquid connections, the adapter is used when mounting the motor pump. This can be added to the basic version of the motor pump as a loose additional part or already mounted on its impeller. This adapter is used if the space between the pump impeller without adapter and the water outlet of the wall area in question is too large. Without the use of an adapter, there would be too large a free gap, which would degrade the flow conditions and thus the efficiency of the pump. Of course, it is possible to use several adapters, which have a different axial thickness in their axial flow range, as a kit. A still further advantage of the pump according to the invention is that the manufacture and storage of adapters represent a much smaller cost factor compared to motor pumps of the size required in each case with regard to their pump impeller.

Eine vorteilhafte Ausgestaltung der erfindungsgemäßen Motorpumpe besteht darin, dass der Adapter in Form einer Ringscheibe mit einem ringförmigen Ansatz, der auf der dem Pumpenlaufrad abgewandten Seite der Ringscheibe vorgesehen ist, in Form einer Ringscheibe oder in Form eines nabenförmigen Bauteiles ausgebildet ist. Zur Befestigung der Adapter an dem Pumpenlaufrad ist ein Klemmring vorgesehen, der kraftformschlüssig an dem Pumpenlaufrad angreift. Solche Adapter sind besonders einfach aufgebaut und kostengünstig herzustellen.An advantageous embodiment of the motor pump according to the invention is that the adapter is designed in the form of an annular disk with an annular shoulder, which is provided on the side of the annular disk facing away from the pump impeller, in the form of an annular disk or in the form of a hub-shaped component. To attach the adapter to the pump impeller, a clamping ring is provided which engages the pump impeller with a positive fit. Such adapters are particularly simple and inexpensive to manufacture.

Die Erfindung ist nachstehend anhand eines in den anliegenden Zeichnungen dargestellten Ausführungsbeispieles näher erläutert. Es zeigen:

Figuren 1 und 2
in Perspektive eine auseinandergezogene Darstellung des Ausführungsbeispieles,
Fig. 3
einen Axialschnitt durch das Ausführungsbeispiel nach den Figuren 1 und 2 in zusammengesetztem Zustand,
Fig. 4
einen Axialschnitt durch das Ausführungsbeispiel in teilweise montiertem Zustand.
The invention is explained below with reference to an embodiment shown in the accompanying drawings. Show it:
Figures 1 and 2
in perspective an exploded view of the embodiment,
Fig. 3
2 shows an axial section through the exemplary embodiment according to FIGS. 1 and 2 in the assembled state,
Fig. 4
an axial section through the embodiment in a partially assembled state.

Fig. 1 zeigt einen Rotor 1 eines nicht weiter dargestellten elektrischen Antriebsmotors für eine ebenfalls nur teilweise dargestellte Pumpe. Der dargestellte Rotor 1 ist beispielsweise ein üblicher Permanentmagnetrotor in Teilkugelform, der in Fig. 3 genauer dargestellt ist. Der Rotor 1 kann jedoch auch ein solcher mit üblichen Wicklungsspulen sein. Der jeweils zu dem Rotor 1 passende Stator (nicht gezeigt) ist entsprechend den elektrischen und sonstigen Anforderungen in herkömmlicher Weise konstruiert.1 shows a rotor 1 of an electric drive motor (not shown further) for a pump, which is also only partially shown. The rotor 1 shown is, for example, a conventional permanent magnet rotor in partial spherical shape, which is shown in more detail in FIG. 3. However, the rotor 1 can also be one with conventional winding coils. The stator (not shown) suitable for the rotor 1 is constructed in a conventional manner in accordance with the electrical and other requirements.

Der Rotor 1 ist mit einem Pumpenlaufrad 2 unmittelbar drehfest verbunden, so dass das Pumpenlaufrad von dem Rotor drehend angetrieben wird. Der aus dem Rotor 1 und dem Pumpenlaufrad 2 gebildeten Einheit ist ein ringförmiger Adapter 3 zentrisch zugeordnet, derart, dass der Adapter an dem Pumpenlaufrad 2 lösbar befestig bar ist. Der Adapter ist mit einem Klemmring 4 versehen, wie aus Fig. 1 deutlich zu erkennen ist. Mit Hilfe dieses Klemmringes wird der Adapter 3 an dem Pumpenlaufrad 2 kraftformschlüssig befestigt.The rotor 1 is directly connected to a pump impeller 2 in a rotationally fixed manner, so that the pump impeller is driven in rotation by the rotor. The unit formed from the rotor 1 and the pump impeller 2 is centrally assigned an annular adapter 3 such that the adapter is detachably attachable to the pump impeller 2. The adapter is provided with a clamping ring 4, as can be clearly seen from FIG. 1. With the help of this clamping ring, the adapter 3 is non-positively attached to the pump impeller 2.

Der Adapter 3 weist auf seiner Rückseite, die dem Pumpenlaufrad 2 abgekehrt ist, eine ringförmige Vertiefung 5 auf, in welche der Klemmring 4 eingelegt wird. Am Außenumfang des Adapters sind beispielsweise drei Aussparungen 6 vorgesehen, in welche drei Klemmfinger 7des Klemmringes 4 eingreifen, (Fig. 1). Die Aussparungen 6 und die darin eingreifenden Klemmfinger 7 bilden somit Rastmittel, um den Klemmring 4 an dem Adapter 3 und dem Adapter an dem Pumpenlaufrad 2 festzuhalten (Fig. 3).The adapter 3 has on its back, which faces away from the pump impeller 2, an annular recess 5, into which the clamping ring 4 is inserted. For example, three recesses 6 are provided on the outer circumference of the adapter, into which three clamping fingers 7 of the clamping ring 4 engage (FIG. 1). The recesses 6 and the clamping fingers 7 engaging therein thus form locking means around the clamping ring 4 to hold the adapter 3 and the adapter on the pump impeller 2 (Fig. 3).

Vorzugsweise ist der Klemmring 4 unverlierbar an dem Adapter 3 angeordnet, so dass der Adapter zusammen mit dem Klemmring 4 eine Einheit bildet. Die Unverlierbarkeit des Klemmringes 4 kann dadurch bewirkt werden, dass er nach seinem Einlegen in die Vertiefung 5 in üblicher Weise verstemmt oder beispielsweise durch Punktschweißen befestigt wird.The clamping ring 4 is preferably captively arranged on the adapter 3, so that the adapter forms a unit together with the clamping ring 4. The captive nature of the clamping ring 4 can be brought about in that it is caulked in the usual manner after it has been inserted into the depression 5 or is fastened, for example, by spot welding.

Der Adapter 3 kann in verschiedenen Ausführungsformen ausgebildet sein. Die Figuren 1, 2 und 3 zeigen eine beispielsweise Ausführungsform.The adapter 3 can be designed in various embodiments. Figures 1, 2 and 3 show an example embodiment.

Die in den Figuren 1, 2 und 3 gezeigte Ausführungsform des Adapters 3 besteht aus einer Ringscheibe 8, die auf ihrer dem Pumpenlaufrad 2 abgewandten Seite mit einem ringförmigen Ansatz 9 versehen ist, wobei die Ringscheibe und der Ansatz ein einstückiges Bauteil bilden. Der ringförmige Ansatz 9 bildet eine Art Nabe und bewirkt ein Axialmaß A (Fig. 3) für die Überbrückung des weiter vorstehend genannten Zwischenraumes zwischen dem Pumpenlaufrad und einem Wandbereich mit Flüssigkeitsanschlüssen. Dieser Wandbereich kann ein solcher z. B. eines Heizkessels sein. Welches Axialmaß A jeweils gewählt wird, hängt von den Heizkesseltypen ab. Dieses Axialmaß kann aber auch von dem laufradseitigen Gehäuseteil der Motorpumpentypen, die für andere Flüssigkeit führende Einrichtungen, z. B. Rohrleitungssysteme, verwendet werden, abhängen.The embodiment of the adapter 3 shown in FIGS. 1, 2 and 3 consists of an annular disk 8 which is provided with an annular extension 9 on its side facing away from the pump impeller 2, the annular disk and the extension forming an integral component. The annular extension 9 forms a type of hub and brings about an axial dimension A (FIG. 3) for bridging the above-mentioned intermediate space between the pump impeller and a wall area with liquid connections. This wall area can be such a z. B. a boiler. Which axial dimension A is selected depends on the boiler type. This axial dimension can also from the impeller-side housing part of the motor pump types, the devices for other liquid-carrying devices, for. B. piping systems are used depend.

Wie bereits erwähnt, kann die Motorpumpe auch ohne den Adapter 3 an der jeweiligen Flüssigkeit führenden Einrichtung oder in Verbindung mit ihrem laufradseitigen Gehäuseteil verwendet werden. Der Adapter 3 ist der Motorpumpe im Regelfall als loses Zusatzteil beigefügt, so dass am Montageort der Motorpumpe entschieden werden kann, ob der Adapter an dem Pumpenlaufrad 3 verwendet werden muss.As already mentioned, the motor pump can also be used without the adapter 3 on the respective liquid-carrying device or in connection with its housing part on the impeller side. The adapter 3 is usually attached to the motor pump as a loose additional part, so that at the installation location of the motor pump it can be decided whether the adapter on the pump impeller 3 must be used.

In alternativer Ausführung des Adapters 3 kann dieser auch so ausgebildet sein, dass er nur in Form einer Ringscheibe besteht, d. h. ohne Ansatz 9. Die Ringscheibe ist dann bezüglich ihrer Dicke insgesamt im Wesentlichen so ausgebildet, dass das vorerwähnte Axialmaß A wenigstens im Saugmundbereich des Pumpenlaufrades gegeben ist.In an alternative embodiment of the adapter 3, it can also be designed such that it only exists in the form of an annular disc, i. H. without shoulder 9. The thickness of the annular disk is then essentially such that the aforementioned axial dimension A is at least in the suction mouth area of the pump impeller.

In noch weiterer alternativer Ausgestaltung des Adapters kann so vorgegangen sein, dass dieser praktisch nur als ringförmiger Ansatz ausgebildet ist. In dieser Form ist er vergleichbar mit dem vorgenannten ringförmigen Ansatz 9. Der Adapter 3 bildet dann eine Art nabenförmiges Bauteil.In yet another alternative embodiment of the adapter, the procedure can be such that it is practically only in the form of an annular extension. In this form, it is comparable to the aforementioned annular extension 9. The adapter 3 then forms a type of hub-shaped component.

Gemäß Fig. 3 ist das Pumpenlaufrad 2, das eine vordere Deckscheibe 2a aufweist, so an dem Rotor 1 befestigt, dass die an dieser Deckscheibe vorgesehenen Schaufeln 2b dem Rotor 1 zugekehrt sind. Diese Ausbildung und Anordnung des Pumpenlaufrades ist auch insofern zweckmäßig, als dass der Adapter 3 dann auf einfache Weise mittels der Klemmfinger 7 des Klemmringes 4 an der Deckscheibe 2a des Laufrades 2 befestigt werden kann (Fig. 3), an welcher er zentriert und unmittelbar anliegt.According to FIG. 3, the pump impeller 2, which has a front cover disk 2a, is fastened to the rotor 1 in such a way that the blades 2b provided on this cover disk face the rotor 1. This configuration and arrangement of the pump impeller is also expedient in that the adapter 3 can then be attached in a simple manner by means of the clamping fingers 7 of the clamping ring 4 to the cover disk 2a of the impeller 2 (FIG. 3), on which it is centered and directly in contact ,

Fig. 3 zeigt ein Pumpenlaufrad 2 mit vorderer Deckscheibe 2a. Alternativ ist es möglich, ein Pumpenlaufrad mit nur hinterer Deckschreibe zu verwenden, an dem die Schaufeln 2b integral vorhanden sind (nicht gezeigt), so dass das Pumpenlaufrad 2 auf seiner Vorderseite deckscheibenfrei ist. Der Adapter 3, der in diesem Fall die Form einer Ringscheibe mit oder ohne Ansatz 9 aufweist, liegt dann vorne an den Schaufeln eines solchen Pumpenlaufrades fest an, und zwar mit Hilfe des Klemmringes 4. Der Adapter übt auf diese Weise zwei Funktionen aus, nämlich seine Überbrückungsfunktion und zusätzlich die Funktion als vordere Deckscheibe.3 shows a pump impeller 2 with a front cover disk 2a. Alternatively, it is possible to use a pump impeller with only a rear cover disc on which the blades 2b are integrally present (not shown), so that the pump impeller 2 is free of a cover disk on its front side. The adapter 3, which in this case has the shape of an annular disk with or without a shoulder 9, then lies firmly against the front of the blades of such a pump impeller, with the aid of the clamping ring 4. The adapter thus performs two functions , namely its bridging function and also the function as a front cover plate.

In weiteren alternativen Ausbildungen kann das Laufrad 2 auch so ausgebildet sein, dass es in herkömmlicher Weise zwei Deckscheiben aufweist oder dass die Schaufeln einstückig mit dem Rotor 1 ausgebildet sind. Auch in diesen beiden Fällen wird der entsprechende Adapter an dem Pumpenlaufrad bzw. an den Schaufeln lösbar befestigt, z. B. mittels Klemmmitteln.In further alternative designs, the impeller 2 can also be designed in such a way that it has two cover disks in a conventional manner or that the blades are formed in one piece with the rotor 1. In these two cases, the corresponding adapter is releasably attached to the pump impeller or to the blades, for. B. by means of clamping means.

Wie bereits erwähnt, ist der Rotor 1 herkömmlicher Bauart und dem Fachmann daher allgemein bekannt. Der in Fig. 3 gezeigte Rotor 1 in Form eines teilkugelförmigen Permanentmagnetrotors ist daher nur kurz erläutert.As already mentioned, the rotor 1 is of conventional design and is therefore generally known to the person skilled in the art. The rotor 1 shown in FIG. 3 in the form of a partially spherical permanent magnet rotor is therefore only briefly explained.

Der in Fig. 3 gezeigte Rotor 1 weist einen rotationssymmetrischen Träger 10 auf, an dessen einer Seite das Pumpenlaufrad 2 mit dem Adapter 3 befestigt ist. Der Träger 10 besteht im Wesentlichen aus einem scheibenförmigen Körper 10a mit einem rückwärtigen, zylindrischen Fortsatz 10b. Ein teilkugelförmiger Schalenmagnetkörper 11 ist mittels eines dünnen Mantels 12 an dem Scheibenkörper 10a und dem Fortsatz 10b befestigt. Im Zentrum des Scheibenkörpers 10a bzw. des Rotors 1 ist auf der dem Fortsatz 10b zugekehrten Seite ein Lagerkörper 13 vorgesehen, der mittels einer Buchse 14 in Position gehalten wird. Ein Axialkanal 15, der den Scheibenkörper 10a von der Laufradseite in Richtung zum Fortsatz 10b durchdringt, sorgt im Betrieb des Rotors 1 für einen axialen Kräfteausgleich an dem Rotor. Der Mantel 12 kann wie gezeigt auch so ausgebildet sein, dass er auch das Pumpenlaufrad 2, das einen Haltering 2 c aufweist, unmittelbar an dem Träger 10 klemmend befestigt, wie Fig. 3 zeigt.The rotor 1 shown in FIG. 3 has a rotationally symmetrical carrier 10, on one side of which the pump impeller 2 is fastened with the adapter 3. The carrier 10 essentially consists of a disk-shaped body 10a with a rear, cylindrical extension 10b. A partially spherical shell magnet body 11 is fastened to the disk body 10a and the extension 10b by means of a thin shell 12. In the center of the disk body 10a or of the rotor 1, a bearing body 13 is provided on the side facing the extension 10b and is held in position by means of a bush 14. An axial channel 15, which penetrates the disc body 10a from the impeller side in the direction of the extension 10b, ensures axial balancing of forces on the rotor during operation of the rotor 1. As shown, the jacket 12 can also be designed such that it also directly clamps the pump impeller 2, which has a retaining ring 2 c, to the carrier 10, as shown in FIG. 3.

In Fig. 4 ist eine teilweise dargestellte Motorpumpe 18 gezeigt. Dargestellt sind im Wesentlichen ein saugseitiges Gehäuseteil 19 der Motorpumpe 18 mit dem Saugstutzen 20 und dem Druckstutzen 21, der Rotor 1 mit dem daran befestigten Pumpenlaufrad 2 und dem an diesem Pumpenlaufrad angeklemmten Adapter 3 sowie eine Trageinrichtung 22 mit einer zentralen, sich axial in den Rotor 1 hineinerstreckenden Stütze 23. Am inneren Ende dieser Stütze ist ein feststehender Kugelkopf 24 angeordnet, der in den Lagerkörper 13 eingreift. Der Kugelkopf 24 und der Lagerkörper 13 bilden eine bewegliche Drehlagerung für den Permanentmagnetrotor 1, derart, dass sich dieser Rotor neben seiner Rotation zusätzlich selbst einstellend ausrichten kann, um eine einwandfreie rotierende Betriebseinstellung einnehmen zu können.A motor pump 18, which is shown in part, is shown in FIG. 4. Essentially shown are a suction-side housing part 19 of the motor pump 18 with the suction port 20 and the pressure port 21, the rotor 1 with the pump impeller 2 fastened thereon and the adapter 3 clamped onto this pump impeller, and a support device 22 with a central axially into the rotor 1 extending support 23. At the inner end of this support a fixed ball head 24 is arranged, which engages in the bearing body 13. The ball head 24 and the bearing body 13 form a movable rotary bearing for the permanent magnet rotor 1 in such a way that this rotor can, in addition to its rotation, also be self-adjusting in order to be able to assume a perfectly rotating operating setting.

Das Gehäuseteil 19, dessen Stutzen 20 und 21 an Flüssigkeit führende Rohrleitungen anschließbar sind, ist mit einem Einlass 25, der mit dem Saugstutzen 20 kommuniziert, und mit einem Auslass 26, der mit dem Druckstutzen 21 kommuniziert, versehen. Dieses Gehäuseteil hat einen inneren Wandbereich 27, der zum Pumpenlaufrad 2 einen größeren axialen Abstand aufweist. Deshalb ist das Pumpenlaufrad mit einem Adapter 3 versehen, um den axialen Zwischenraum zwischen diesem Wandbereich 27 und dem Pumpenlaufrad 2 zwecks Gewährleistung, guter Strömungsverhältnisse und eines guten Wirkungsgrades im Saugmundbereich des Pumpenlaufrades zu überbrücken. Bei Stillstand des Rotors 1 wird sich dieser, bedingt durch seine Schwerpunktlage, um den Kugelkopf 24 neigen bzw. geneigt einstellen. Der Adapter 3 dient in diesem ruhenden Betriebszustand auch dazu, den Rotor 1 an dem Kugelkopf 24 abgestützt zu halten, indem der Adapter an dem Wandbereich 27 zur Anlage kommt, so dass der Rotor nicht von dem Kugelkopf abfällt. Der Rotor kann somit seine rotierende Betriebsfunktion beim Einschalten der Motorpumpe wieder sicher einnehmen.The housing part 19, the connections 20 and 21 of which can be connected to liquid-carrying pipelines, is provided with an inlet 25, which communicates with the suction connection 20, and with an outlet 26, which communicates with the pressure connection 21. This housing part has an inner wall region 27 which is at a greater axial distance from the pump impeller 2. The pump impeller is therefore provided with an adapter 3 in order to bridge the axial space between this wall region 27 and the pump impeller 2 in order to ensure good flow conditions and good efficiency in the suction mouth region of the pump impeller. When the rotor 1 is at a standstill, due to its center of gravity, the rotor 1 will tilt or incline around the ball head 24. In this inoperative operating state, the adapter 3 also serves to keep the rotor 1 supported on the ball head 24 by the adapter coming into contact with the wall region 27, so that the rotor does not fall off the ball head. The rotor can thus safely resume its rotating operating function when the motor pump is switched on.

Wird der in Fig. 4 nur teilweise gezeigte Kopf der Motorpumpe 18 wegen eines Defektes der Motorpumpe ausgetauscht, so wird dieser Kopf von dem Gewinde 19a des mit Flüssigkeit führenden Rohleitungen verbunden bleibenden Pumpengehäuses 19 abgeschraubt und durch einen neuen Motorpumpenkopf ersetzt. Wenn beispielsweise der Rotor 1 und/oder das daran befestigte Pumpenlaufrad 2 dieses neuen Kopfes eine größere axiale Abmessung aufweisen bzw. aufweist, wird der Adapter 3 nicht benötigt und daher nicht an dem Pumpenlaufrad 2 montiert. Das Pumpenlaufrad befindet sich dann mit seinem Saugmund in üblicher Weise nahe dem Wandbereich 27 des Pumpengehäuseteiles 19. Im umgekehrten Auswechselfall gilt Entsprechendes, d. h. ein Adapter 3 muss an dem Pumpenlaufrad 2 des neuen Motorpumpenkopfes montiert werden. Bei der in Fig. 4 teilweise gezeigten Motorpumpe fehlen im Wesentlichen lediglich der elektrische Stator für den Rotationsbetrieb des Permanentmagnetrotors 1 und das Motorgehäuse, das auf das Pumpengehäuseteil 19 an dessen Gewinde 19a aufgeschraubt wird.If the head of the motor pump 18, which is only partially shown in FIG. 4, is replaced due to a defect in the motor pump, then this head is unscrewed from the thread 19a of the pump housing 19 which remains connected with liquid pipelines and replaced by a new motor pump head. For example, if the rotor 1 and / or the pump impeller 2 of this new head attached to it have or has a larger axial dimension, the adapter 3 is not required and is therefore not mounted on the pump impeller 2. The pump impeller is then located with its suction mouth in the usual way near the wall area 27 of the pump housing part 19. In the opposite case, the same applies, ie. H. an adapter 3 must be mounted on the pump impeller 2 of the new motor pump head. In the motor pump partially shown in FIG. 4, essentially only the electrical stator for the rotary operation of the permanent magnet rotor 1 and the motor housing, which is screwed onto the pump housing part 19 at its thread 19a, are missing.

Der in dieser Beschreibung verwendete Begriff Motorpumpe ist so zu verstehen, dass auch der vorerwähnte Motorpumpenkopf allein, der im Wesentlichen den Rotor 1 mit dem Pumpenlaufrad 2 und dem Adapter 3, den elektrischen Stator und das auf das Gewinde 19a des Pumpengehäuseteiles 19 aufschraubbare Motorgehäuse (beides nicht gezeigt) enthält, davon erfasst ist. In dieser Ausführung wird die Motorpumpe zum Beispiel an einem Heizkessel verwendet. In erweiteter Ausführungsform kann die Motorpumpe das vorerwähnte Motorpumpengehäuseteil 19 zusätzlich enthalten. In dieser Ausführungsform wird die Motorpumpe vorzugsweise in ein Rohrleitungssystem eingebaut. In einem Defektfall der Motorpumpe wird das Gehäuseteil 19 jedoch nicht von dem Rohrleitungssystem demontiert, sondern es wird lediglich der vorstehend erläuterte Motorpumpenkopf von dem Gehäuseteil 19 demontiert und durch einen neuen Motorpumpenkopf ersetzt, bei dem das Pumpenlaufrad des Rotors in bauartbedingter Abhängigkeit des neuen Motorpumpenkopfes mit einem Adapter 3 versehen werden muss oder nicht.The term motor pump used in this description should be understood to mean that the aforementioned motor pump head alone, which essentially comprises the rotor 1 with the pump impeller 2 and the adapter 3, the electrical stator and the motor housing which can be screwed onto the thread 19a of the pump housing part 19 (both not shown) contains, is included. In this version, the motor pump is used on a boiler, for example. In an expanded embodiment, the motor pump can additionally contain the aforementioned motor pump housing part 19. In this embodiment, the motor pump is preferably installed in a pipeline system. In the event of a defect in the motor pump, however, the housing part 19 is not removed from the piping system, but rather the motor pump head explained above is removed from the housing part 19 and replaced by a new motor pump head in which the pump impeller of the rotor must be provided with an adapter 3 or not, depending on the design of the new motor pump head.

Claims (10)

Motorpumpe, enthaltend ein Gehäuse, einen in dem Gehäuse angeordneten elektrischen Motor, der einen Stator und einen Rotor (1) aufweist, und ein mit dem Rotor drehfest verbundenes Pumpenlaufrad (2) mit mehreren Schaufeln (2b), das einem Flüssigkeitsanschlüsse aufweisenden Wandbereich im montierten Zustand der Motorpumpe frei gegenüberliegt und mit den Flüssigkeitsanschlüssen zusammenwirkt, dadurch gekennzeichnet, dass für das Pumpenlaufrad (2) wenigstens ein auf dessen Ansaugseite lösbar befestigbarer, ringförmiger Adapter (3) zur Überbrückung eines Zwischenraumes zwischen dem Pumpenlaufrad (2) und dem diesem Pumpenlaufrad saugseitig gegenüberliegenden Wandbereich mit den Flüssigkeitsanschlüssen vorgesehen ist.Motor pump, comprising a housing, an electric motor arranged in the housing, which has a stator and a rotor (1), and a pump impeller (2) with a plurality of blades (2b) which is connected in a rotationally fixed manner to the rotor and which has a wall area in the mounted area with liquid connections State of the motor pump is freely opposite and interacts with the liquid connections, characterized in that for the pump impeller (2) at least one annular adapter (3) which can be detachably fastened on its suction side to bridge an intermediate space between the pump impeller (2) and the pump impeller opposite on the suction side Wall area with the liquid connections is provided. Motorpumpe nach Anspruch 1, dadurch gekennzeichnet, dass der Adapter (3) in Form einer Ringscheibe (8) mit einem ringförmigen Ansatz (9), der auf der dem Pumpenlaufrad (2) abgewandten Seite dieser Ringscheibe vorgesehen ist, ausgebildet ist.Motor pump according to Claim 1, characterized in that the adapter (3) is designed in the form of an annular disk (8) with an annular extension (9) which is provided on the side of this annular disk facing away from the pump impeller (2). Motorpumpe nach Anspruch 1, dadurch gekennzeichnet, dass der Adapter (3) in Form einer Ringscheibe ausgebildet ist.Motor pump according to claim 1, characterized in that the adapter (3) is designed in the form of an annular disc. Motorpumpe nach Anspruch 1, dadurch gekennzeichnet, dass der Adapter (3) in Form eines nabenförmigen Bauteiles ausgebildet ist.Motor pump according to claim 1, characterized in that the adapter (3) is designed in the form of a hub-shaped component. Motorpumpe nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass die Vorderseite des Pumpenlaufrades (2) deckscheibenfrei ausgebildet ist und dass der ringscheibenförmige Adapter (3) vorne an den Schaufeln (2a) des Pumpenlaufrades (2) in zusätzlicher Funktion als vordere Deckscheibe fest anliegt.Motor pump according to claim 2 or 3, characterized in that the front of the pump impeller (2) is designed without a cover disk and that the annular disk-shaped adapter (3) is at the front on the blades (2a) of the pump impeller (2) in an additional function as a front cover disc. Motorpumpe nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Adapter (3) mittels eines Klemmringes (4) kraftformschlüssig an dem Pumpenlaufrad (2) befestigt ist.Motor pump according to one of Claims 1 to 5, characterized in that the adapter (3) is fastened to the pump impeller (2) in a force-locking manner by means of a clamping ring (4). Motorpumpe nach Anspruch 6, dadurch gekennzeichnet, dass der Klemmring (4) versenkt in dem Adapter (3) angeordnet ist.Motor pump according to claim 6, characterized in that the clamping ring (4) is arranged recessed in the adapter (3). Motorpumpe nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass der Klemmring (4) unverlierbar an dem Adapter (3) angeordnet ist.Motor pump according to claim 6 or 7, characterized in that the clamping ring (4) is captively arranged on the adapter (3). Motorpumpe nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der Rotor (1) ein teilkugelförmiger Permanentmagnetrotor ist, an dem das mit dem Adapter (3) verbindbare Pumpenlaufrad (2) unmittelbar befestigt und der in seinem Zentrum an einem feststehenden Kugelkopf (24) selbst einstellend beweglich gelagert ist.Motor pump according to one of claims 1 to 8, characterized in that the rotor (1) is a partially spherical permanent magnet rotor to which the pump impeller (2) which can be connected to the adapter (3) is directly attached and which is fixed at its center to a fixed ball head (24 ) is self-adjusting and movably mounted. Motorpumpe nach einem der Ansprüche 2 bis 9, dadurch gekennzeichnet, dass ein Satz aus mehreren Adaptern (3) vorgesehen ist, deren axiale Abmessung in ihrem Saugmundbereich zur Überbrückung axial unterschiedlich großer Zwischenräume voneinander verschieden ist.Motor pump according to one of claims 2 to 9, characterized in that a set of several adapters (3) is provided, the axial dimensions of which are different from one another in their suction mouth region for bridging axially differently sized gaps.
EP03006417A 2003-03-21 2003-03-21 Motor pump Expired - Lifetime EP1460275B1 (en)

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DE50300854T DE50300854D1 (en) 2003-03-21 2003-03-21 motor pump
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015042634A1 (en) * 2013-04-10 2015-04-02 Weir Minerals Australia Ltd Pump impeller

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105756953B (en) * 2016-04-22 2018-08-10 汪普军 A kind of computer water cooling pump

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB730459A (en) * 1953-10-16 1955-05-25 Hathaway Ltd L High pressure pumping unit for fire-fighting purposes
US3803432A (en) * 1971-10-07 1974-04-09 Laing Nikolaus Bearing structure for mounting rotors in motors having spherical air gaps and including means for limiting axial movement of the rotors
US4043706A (en) * 1973-06-05 1977-08-23 Alan John Walker Bearing support structure for electro-magnet driven pump

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB730459A (en) * 1953-10-16 1955-05-25 Hathaway Ltd L High pressure pumping unit for fire-fighting purposes
US3803432A (en) * 1971-10-07 1974-04-09 Laing Nikolaus Bearing structure for mounting rotors in motors having spherical air gaps and including means for limiting axial movement of the rotors
US4043706A (en) * 1973-06-05 1977-08-23 Alan John Walker Bearing support structure for electro-magnet driven pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015042634A1 (en) * 2013-04-10 2015-04-02 Weir Minerals Australia Ltd Pump impeller

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