EP2181264B1 - Rotary pump - Google Patents

Rotary pump Download PDF

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Publication number
EP2181264B1
EP2181264B1 EP08801683.7A EP08801683A EP2181264B1 EP 2181264 B1 EP2181264 B1 EP 2181264B1 EP 08801683 A EP08801683 A EP 08801683A EP 2181264 B1 EP2181264 B1 EP 2181264B1
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EP
European Patent Office
Prior art keywords
pump
motor
housing
intermediate space
surrounded
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP08801683.7A
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German (de)
French (fr)
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EP2181264A1 (en
Inventor
Günter Strelow
Andreas Eichmann
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 SE
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Wilo SE
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Publication of EP2181264A1 publication Critical patent/EP2181264A1/en
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Publication of EP2181264B1 publication Critical patent/EP2181264B1/en
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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
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps

Definitions

  • the invention relates to a centrifugal motor pump, in particular in wet rotor design, whose electric motor rotor drives the pump impeller with its shaft and is surrounded by the motor stator, wherein the motor stator and the pump impeller are surrounded by the pump and motor housing to form a gap, and that arranged in the space at least one vibration damping element is, which stores the motor stator in the pump and motor housing
  • the object of the invention is in a centrifugal motor pump of the type mentioned in a structurally simple way to reduce air and structure-borne noise emissions with high efficiency and this particular for pumps with small External dimensions. It is another object of the invention to provide a simple way electrical connections to the electric motor.
  • This object is achieved in that the intermediate space is partially or completely filled by an elastic molding compound as a vibration damping element.
  • the motor stator 17 forms a cylindrical interior 15, 18, which is traversed by the pumped liquid and in which with a motor shaft 21, a rotor 7 rotatably mounted (bearing 8).
  • the motor stator 17 is surrounded by an engine inner housing 19. However, this housing 19 may be missing and replaced by the casing 11. In all embodiments, the motor inner housing 19 is shown as part of the motor stator 17.
  • the motor stator 17 is surrounded by an outer motor housing 3 at a distance such that there is an intermediate space 22 between the stator 17 and the housing 3.
  • the gap 22 is partially or completely filled by an elastic molding compound 12 as a vibration damping element, which decouple the stator 17 relative to the motor housing 3 and thus ensures that vibrations generated by the stator or rotor are not transmitted to the motor housing 3 substantially.
  • the vibration damping element may be formed by a gel.
  • the gel can form elements that are surrounded by a socket and / or a natural skin.
  • the outer pump housing 1 which is preferably designed spirally and a axial suction port 23 and an outlet opening 24 has.
  • the liquid flowing through the pump interior 20 also flows through the gap 22 and thus flows around the motor stator 17 so that it is cooled not only via the rotor chamber 15 on the inside but also on the outside.
  • the outer pump housing 1 is connected to the outer motor housing 3 via flanges 2. Further, the motor connection cable 4 is guided through a seal 16 through the wall of the outer motor housing 3 to the outside.
  • the gap 22 is thus partially or completely filled by an elastic molding compound 12, which stores the motor stator 17 in the outer motor housing 3 damping.
  • the elastic molding compound 12 is liquid-permeable, so that a flushing of the stator 17 takes place.
  • the molding compound may consist of an open-cell plastic foam.
  • the second embodiment according to Fig. 2 is different from that Fig. 1 in that the pump impeller 5 is surrounded by a spiral housing 13 that is fastened to the stator 17, in particular on the motor inner housing 19.
  • a gap 25 which surrounds the spiral housing 13 and is connected to the intermediate space 22.
  • a vibration damper 14 may be located, which is designed as a sleeve-shaped seal and bridges the inlet connection between the suction port 23 and the suction port 23 in the motor inner housing.
  • the outlet opening 24 in the spiral housing 13 is arranged without such a seal, so that liquid emerging from the spiral housing 13 enters the intermediate spaces 22 and 25 and thus flows around the spiral housing 13 and the stator 17 on the outside.
  • the third embodiment according to Fig. 3 is different from that Fig. 2 in that the design of a tubular pump has been selected, wherein the delivery liquid flows through the intermediate space 22 in its entire quantity to an outlet opening 24, which is arranged on the other side of the motor pump coaxial with the suction opening 23.
  • the pump impeller 5 is surrounded by a spiral housing 13, so that both a gap 22 and a gap 25 is made.
  • the stator 17 is supported by vibration dampers 10, 12b.
  • the vibration damper 10 can serve as a guide of the flow.
  • Fig. 4 again shows a tube pump and differs from the after Fig. 3 only in that a spiral housing 13 is missing.

Landscapes

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

Description

Die Erfindung betrifft eine Kreiselmotorpumpe insbesondere in Nassläuferbauart, deren Elektromotorenrotor mit seiner Welle das Pumpenlaufrad antreibt und vom Motorenstator umgeben ist, wobei der Motorenstator und das Pumpenlaufrad vom Pumpen- und Motorgehäuse unter Bildung eines Zwischenraumes umgeben sind, und dass im Zwischenraum mindestens ein schwingungsdämpfendes Element angeordnet ist, das den Motorenstator im Pumpen- und Motorgehäuse lagertThe invention relates to a centrifugal motor pump, in particular in wet rotor design, whose electric motor rotor drives the pump impeller with its shaft and is surrounded by the motor stator, wherein the motor stator and the pump impeller are surrounded by the pump and motor housing to form a gap, and that arranged in the space at least one vibration damping element is, which stores the motor stator in the pump and motor housing

Um Luft- und Körperschallemissionen an einer Kreiselmotorpumpe zu reduzieren ist es bekannt, schwingungsdämpfende Maßnahmen an einzelnen Komponenten vorzunehmen wie an den Lagern oder am Spaltkopf. Es hat sich gezeigt, dass diese Maßnahmen insbesondere bei kleinen Pumpen entweder nicht ausreichen oder aber technisch sehr aufwendig sind. Besonders schwierig sind die bekannten schwingungsdämpfenden Maßnahmen bei Kleinpumpen durchführbar.In order to reduce airborne and structure-borne noise emissions on a centrifugal motor pump, it is known to carry out vibration-damping measures on individual components, such as on the bearings or on the splitting head. It has been found that these measures are not sufficient, especially for small pumps, or are technically very expensive. Particularly difficult are the known vibration damping measures in small pumps feasible.

Aus der US 2 312 848 , die dem Oberbegriff des Anspruchs 1 entspricht, ist es bei einer Kreiselpumpe bekannt, schwingungsdämpfende Elemente als Lagerung im Raum zwischen dem Motorenstator und dem äußeren Gehäuse anzuordnen.From the US 2,312,848 , Which corresponds to the preamble of claim 1, it is known in a centrifugal pump to arrange vibration damping elements as storage in the space between the motor stator and the outer housing.

Aufgabe der Erfindung ist es bei einer Kreiselmotorpumpe der eingangs genannten Art auf konstruktiv einfache Weise, Luft- und Körperschallemissionen mit hoher Wirkung zu reduzieren und dies insbesondere bei Pumpen mit kleinen Außenabmessungen. Ferner ist es Aufgabe der Erfindung, auf einfache Weise elektrische Verbindungen zum Elektromotor zu schaffen.The object of the invention is in a centrifugal motor pump of the type mentioned in a structurally simple way to reduce air and structure-borne noise emissions with high efficiency and this particular for pumps with small External dimensions. It is another object of the invention to provide a simple way electrical connections to the electric motor.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass der Zwischenraum von einer elastischen Formmasse als schwingungsdämpfendes Element teilweise oder vollständig ausgefüllt ist.This object is achieved in that the intermediate space is partially or completely filled by an elastic molding compound as a vibration damping element.

Eine solche Lösung stellt eine vollständige Entkopplung von Motor mit Laufrad und dem äußeren Pumpen- und Motorgehäuse dar, wodurch Luft- und Körperschallemissionen wesentlich verringert werden. Auf Dämpfungsmaßnahmen an einzelnen Komponenten kann damit verzichtet werden, da das gesamte Aggregat vom System entkoppelt ist. Bei gleich bleibender Präzision der Bauteile können die Schallemissionen reduziert werden und/oder bei gleicher Schallemission kann die Anforderung an die Präzision der Bauteile verringert werden. Dies kann dann auch bedeuten, dass andere ggf. kostengünstigere Motortechnologien verwendet werden können. Ferner besteht der erhebliche Vorteil, dass Veränderungen in den Dämpfungseigenschaften in Abhängigkeit vom Systemdruck nicht entstehen, da keine Kräfte resultierend aus dem Systemdruck auf die Dämpfungselemente wirken können.Such a solution represents a complete decoupling of motor with impeller and the outer pump and motor housing, whereby air and structure-borne noise emissions are significantly reduced. Damping measures on individual components can be dispensed with since the entire unit is decoupled from the system. With constant precision of the components, the noise emissions can be reduced and / or with the same acoustic emission, the requirement for the precision of the components can be reduced. This can then also mean that other possibly more cost-effective engine technologies can be used. Furthermore, there is the considerable advantage that changes in the damping properties as a function of the system pressure do not arise because no forces resulting from the system pressure can act on the damping elements.

Vorteilhafte Ausgestaltungen der Erfindungen sind in den Unteransprüchen aufgeführt. Die erfindungsgemäßen Lösungen lassen besonders einfache Konstruktionen bei hoher Dämpfungswirkung zu, wobei solche Konstruktionen sich besonders bei klein bauenden Pumpen vorteilhaft auswirken.Advantageous embodiments of the inventions are listed in the subclaims. The solutions according to the invention allow for particularly simple constructions with a high damping effect, such constructions having an advantageous effect, in particular in the case of pumps of small construction.

Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden im Folgenden näher beschrieben. Es zeigen:

Fig. 1
ein erstes Ausführungsbeispiel mit einer elastischen Formmasse zwischen Motorenstator und Motorgehäuse,
Fig. 2
ein zweites Ausführungsbeispiel ähnlich Figur 1 mit einem das Pumpenlaufrad umgebenden Spiralgehäuse, das vom äußeren Pumpengehäuse entkoppelt ist,
Fig. 3
ein drittes Ausführungsbeispiel als Rohrpumpe, wobei die innere Baugruppe von der Förderflüssigkeit umflossen ist,
Fig, 4
ein viertes Ausführungsbeispiel ähnlich Figur 3, wobei das Pumpenlaufrad von keinem inneren Spiralgehäuse umgeben ist.
Embodiments of the invention are illustrated in the drawings and will be described in more detail below. Show it:
Fig. 1
a first embodiment with an elastic molding compound between the motor stator and the motor housing,
Fig. 2
a second embodiment similar FIG. 1 with a spiral housing surrounding the pump impeller, which is decoupled from the outer pump housing,
Fig. 3
a third embodiment as a pipe pump, wherein the inner assembly is surrounded by the conveying fluid,
Fig. 4
a fourth embodiment similar FIG. 3 , wherein the pump impeller is surrounded by any inner volute casing.

In den vier dargestellten Ausführungsbeispielen handelt es sich jeweils um Kreiselmotorpumpen in Nassläuferbauart. Hierbei bildet der Motorenstator 17 einen zylindrischen Innenraum 15, 18, der von der Förderflüssigkeit durchflossen ist und in dem mit einer Motorenwelle 21 ein Rotor 7 drehbar (Lager 8) gelagert ist. Hierbei weist der Stator 17 den Raum 15, 18 umgebende Wicklungen 6 auf, die von einem Duroplast oder Thermoplast ummantelt sind, so dass der Elektromotor mit seiner Ummantelung 11 eine Einheit bildet, aus der die Motorenwelle 21 in den Pumpenraum hinein austritt, um dort das Pumpenlaufrad 5 zu tragen.In the four illustrated embodiments are each rotary motor pumps in wet rotor design. Here, the motor stator 17 forms a cylindrical interior 15, 18, which is traversed by the pumped liquid and in which with a motor shaft 21, a rotor 7 rotatably mounted (bearing 8). In this case, the stator 17, the space 15, 18 surrounding windings 6, which are sheathed by a thermosetting plastic or thermoplastic, so that the electric motor with its casing 11 forms a unit from which the motor shaft 21 exits into the pump chamber into it Pump impeller 5 to wear.

Zu beiden Seiten der Ummantelung 11 ist der Motorenstator 17 von einem Motorinnengehäuse 19 umfasst. Dieses Gehäuse 19 kann aber fehlen und durch die Ummantelung 11 ersetzt sein. Bei allen Ausführungsbeispielen ist das Motorinnengehäuse 19 als Teil des Motorenstators 17 dargestellt.On both sides of the casing 11, the motor stator 17 is surrounded by an engine inner housing 19. However, this housing 19 may be missing and replaced by the casing 11. In all embodiments, the motor inner housing 19 is shown as part of the motor stator 17.

Der Motorenstator 17 ist von einem äußeren Motorgehäuse 3 derart in einem Abstand umgeben, dass zwischen dem Stator 17 und dem Gehäuse 3 rundum ein Zwischenraum 22 besteht. Der Zwischenraum 22 ist von einer elastischen Formmasse 12 als schwingungsdämpfendes Element teilweise oder vollständig ausgefüllt, das den Stator 17 gegenüber dem Motorgehäuse 3 entkoppeln und damit dafür sorgt, dass vom Stator bzw. Rotor erzeugte Schwingungen auf das Motorgehäuse 3 im Wesentlichen nicht übertragen werden.The motor stator 17 is surrounded by an outer motor housing 3 at a distance such that there is an intermediate space 22 between the stator 17 and the housing 3. The gap 22 is partially or completely filled by an elastic molding compound 12 as a vibration damping element, which decouple the stator 17 relative to the motor housing 3 and thus ensures that vibrations generated by the stator or rotor are not transmitted to the motor housing 3 substantially.

Das schwingungsdämpfende Element kann von einem Gel gebildet sein. Hierbei kann das Gel Elemente bilden, die von einer Fassung und/oder von einer Eigenhaut umgeben sind.The vibration damping element may be formed by a gel. Here, the gel can form elements that are surrounded by a socket and / or a natural skin.

An den Zwischenraum 22 schließt der Pumpeninnenraum 20 mit dem äußeren Pumpengehäuse 1 an, das vorzugsweise spiralförmig ausgeführt ist und eine axiale Ansaugöffnung 23 und eine Auslassöffnung 24 aufweist. Die durch den Pumpeninnenraum 20 strömende Flüssigkeit durchfließt auch den Zwischenraum 22 und umspült damit den Motorenstator 17, so dass dieser nicht nur über den Rotorraum 15 innenseitig sondern auch außenseitig gekühlt wird.At the intermediate space 22 of the pump interior 20 connects to the outer pump housing 1, which is preferably designed spirally and a axial suction port 23 and an outlet opening 24 has. The liquid flowing through the pump interior 20 also flows through the gap 22 and thus flows around the motor stator 17 so that it is cooled not only via the rotor chamber 15 on the inside but also on the outside.

Das äußere Pumpengehäuse 1 ist mit dem äußeren Motorengehäuse 3 über Flansche 2 verbunden. Ferner ist das Motorenanschlusskabel 4 über eine Dichtung 16 durch die Wand des äußeren Motorengehäuses 3 nach außen geführt.The outer pump housing 1 is connected to the outer motor housing 3 via flanges 2. Further, the motor connection cable 4 is guided through a seal 16 through the wall of the outer motor housing 3 to the outside.

Der Zwischenraum 22 ist somit teilweise oder vollständig durch eine elastische Formmasse 12 ausgefüllt ist, die den Motorenstator 17 im äußeren Motorgehäuse 3 dämpfend lagert. Hierbei ist vorzugsweise dafür gesorgt, dass die elastische Formmasse 12 flüssigkeitsdurchlässig ist, damit ein Umspülen des Stators 17 erfolgt. Hierbei kann die Formmasse aus einem offenporigen Kunststoffschaum bestehen.The gap 22 is thus partially or completely filled by an elastic molding compound 12, which stores the motor stator 17 in the outer motor housing 3 damping. Here, it is preferably ensured that the elastic molding compound 12 is liquid-permeable, so that a flushing of the stator 17 takes place. Here, the molding compound may consist of an open-cell plastic foam.

Das zweite Ausführungsbeispiel nach Fig. 2 unterscheidet sich von dem nach Fig. 1 dadurch, dass das Pumpenlaufrad 5 von einem Spiralgehäuse 13 umgeben ist, dass am Stator 17 insbesondere am Motorinnengehäuse 19 befestigt ist. Hierbei besteht zwischen dem Spiralgehäuse 13 und dem äußeren Pumpengehäuse 1 ein Zwischenraum 25, der das Spiralgehäuse 13 umgibt und mit dem Zwischenraum 22 verbunden ist. Im Zwischenraum 25 kann sich ein Schwingungsdämpfer 14 befinden, der als buchsenförmige Dichtung ausgebildet ist und die Einlassverbindung zwischen der Ansaugöffnung 23 und der Ansaugöffnung 23 im Motorinnengehäuse überbrückt. Die Auslassöffnung 24 im Spiralgehäuse 13 ist ohne eine solche Dichtung angeordnet, so dass aus dem Spiralgehäuse 13 austretende Flüssigkeit in die Zwischenräume 22 und 25 gelangt und damit das Spiralgehäuse 13 und den Stator 17 außenseitig umspült. Somit ist bei diesem Ausführungsbeispiel das gesamte innere Pumpenaggregat, d.h. Antrieb, Laufrad und Hydraulikteil von einem äußeren Gehäuse 1, 3 umschlossen und von diesem über elastische Elemente entkoppelt.The second embodiment according to Fig. 2 is different from that Fig. 1 in that the pump impeller 5 is surrounded by a spiral housing 13 that is fastened to the stator 17, in particular on the motor inner housing 19. Here, between the spiral housing 13 and the outer pump housing 1, a gap 25 which surrounds the spiral housing 13 and is connected to the intermediate space 22. In the space 25, a vibration damper 14 may be located, which is designed as a sleeve-shaped seal and bridges the inlet connection between the suction port 23 and the suction port 23 in the motor inner housing. The outlet opening 24 in the spiral housing 13 is arranged without such a seal, so that liquid emerging from the spiral housing 13 enters the intermediate spaces 22 and 25 and thus flows around the spiral housing 13 and the stator 17 on the outside. Thus, in this embodiment, the entire inner pump unit, ie drive, impeller and hydraulic part of an outer housing 1, 3 enclosed and decoupled from this via elastic elements.

Das dritte Ausführungsbeispiel nach Fig. 3 unterscheidet sich von dem nach Fig. 2 dadurch, dass die Bauform einer Rohrpumpe gewählt wurde, wobei die Förderflüssigkeit in ihrer gesamten Menge den Zwischenraum 22 zu einer Auslassöffnung 24 durchströmt, die auf der anderen Seite der Motorenpumpe koaxial zur Ansaugöffnung 23 angeordnet ist. Hierbei ist das Pumpenlaufrad 5 von einem Spiralgehäuse 13 umgeben, so dass sowohl ein Zwischenraum 22 als auch ein Zwischenraum 25 besteht. Wiederum ist der Stator 17 durch Schwingungsdämpfer 10, 12b gelagert. Hierbei können die Schwingungsdämpfer 10 als Führung der Strömung dienen.The third embodiment according to Fig. 3 is different from that Fig. 2 in that the design of a tubular pump has been selected, wherein the delivery liquid flows through the intermediate space 22 in its entire quantity to an outlet opening 24, which is arranged on the other side of the motor pump coaxial with the suction opening 23. Here, the pump impeller 5 is surrounded by a spiral housing 13, so that both a gap 22 and a gap 25 is made. Again, the stator 17 is supported by vibration dampers 10, 12b. Here, the vibration damper 10 can serve as a guide of the flow.

Das Ausführungsbeispiel nach Fig. 4 zeigt wiederum eine Rohrpumpe und unterscheidet sich von dem nach Fig. 3 nur dadurch, dass ein Spiralgehäuse 13 fehlt.The embodiment according to Fig. 4 again shows a tube pump and differs from the after Fig. 3 only in that a spiral housing 13 is missing.

Claims (9)

  1. Centrifugal motor pump of wet rotor design, the electric motor rotor (7) of which drives the pump impeller (5) by way of its shaft (21) and is surrounded by the motor stator (17), the motor stator (17) and the pump impeller (5) being surrounded by the pump and motor housing (1, 3) with the formation of an intermediate space (22, 25), and at least one vibration-damping element (10, 12, 28) being arranged in the intermediate space (22, 25), which vibration-damping element (10, 12, 28) mounts the motor stator (17) in the pump and motor housing (1, 3), characterized in that the intermediate space (22) is filled partially or completely by an elastic moulding compound (12) as vibration-damping element.
  2. Pump according to Claim 1, characterized in that the vibration-damping element is formed by a gel.
  3. Pump according to Claim 2, characterized in that the gel forms elements (10) which are surrounded by a frame and/or by their own skin.
  4. Pump according to one of the preceding claims, characterized in that the elastic moulding compound (12) is permeable or impermeable to liquids.
  5. Pump according to one of the preceding claims, characterized in that the intermediate space (22, 25) is filled, in particular flowed through, by the pumping medium.
  6. Pump according to one of the preceding claims, characterized in that the motor stator (17) is encapsulated by an electrically insulating casting compound (11) which leaves the intermediate space (22) free.
  7. Pump according to one of the preceding claims, characterized in that the pump impeller (5) is surrounded by a spiral housing (13) which is surrounded by the outer pump housing (1) with the formation of the intermediate space (25).
  8. Pump according to one of the preceding claims, characterized in that it is configured as a pipe pump, the pump impeller (5) delivering the pumping medium through the intermediate space (22, 25) to the outlet (24).
  9. Pump according to one of the preceding claims, characterized in that the electric connector/connectors (4) is/are routed to the outside through the vibration-damping element and through the outer motor housing (3).
EP08801683.7A 2007-08-28 2008-08-25 Rotary pump Active EP2181264B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007040461A DE102007040461A1 (en) 2007-08-28 2007-08-28 Centrifugal motor pump
PCT/EP2008/006951 WO2009030391A1 (en) 2007-08-28 2008-08-25 Rotary pump

Publications (2)

Publication Number Publication Date
EP2181264A1 EP2181264A1 (en) 2010-05-05
EP2181264B1 true EP2181264B1 (en) 2018-04-18

Family

ID=39941603

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08801683.7A Active EP2181264B1 (en) 2007-08-28 2008-08-25 Rotary pump

Country Status (4)

Country Link
EP (1) EP2181264B1 (en)
CN (1) CN101790645B (en)
DE (1) DE102007040461A1 (en)
WO (1) WO2009030391A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009014639A1 (en) * 2009-03-24 2010-09-30 Wilo Se Centrifugal motor pump
EP2397699A1 (en) * 2010-06-16 2011-12-21 Behr France Rouffach SAS Fan for an air conditioner in a motor vehicle
DE102012213598B3 (en) 2012-08-01 2013-11-14 Eberspächer Climate Control Systems GmbH & Co. KG Combustion air fan for vehicle heater, has sound absorption chamber which is formed between front end of sound absorption material and lying end region of air flow pipe
CN106593818B (en) * 2016-12-02 2019-05-03 青岛海尔股份有限公司 Refrigerating device
CN106593823B (en) * 2016-12-02 2019-05-03 青岛海尔股份有限公司 Refrigerating device
CN106593821B (en) * 2016-12-02 2019-05-03 青岛海尔股份有限公司 Refrigerating device
CN106593820B (en) * 2016-12-02 2019-05-03 青岛海尔股份有限公司 Refrigerating device
CN106593819B (en) * 2016-12-02 2019-05-03 青岛海尔股份有限公司 Refrigerating device
CN106593822B (en) * 2016-12-02 2019-05-03 青岛海尔股份有限公司 Refrigerating device
DE102019109928A1 (en) * 2019-04-15 2020-10-15 Alfmeier Präzision SE Pump housing, pump and seat

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Publication number Priority date Publication date Assignee Title
US2312848A (en) * 1941-01-07 1943-03-02 Albert R Pezzillo Motor driven pump unit
DE3419831A1 (en) * 1984-05-26 1985-11-28 Albert 5204 Lohmar Blum PUMP UNIT WITH PLASTIC HOUSING
ATE148934T1 (en) * 1992-04-14 1997-02-15 Ebara Corp PUMP HOUSING IN SHEET METAL CONSTRUCTION
US5494403A (en) * 1992-04-14 1996-02-27 Ebara Corporation Full-circumferential flow pump
EP0717195B1 (en) * 1992-04-14 2000-11-08 Ebara Corporation Pump casing made of sheet metal
US20060034717A1 (en) * 2004-08-13 2006-02-16 Joseph Castellone Wet rotor circulators

Non-Patent Citations (1)

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Title
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Publication number Publication date
EP2181264A1 (en) 2010-05-05
WO2009030391A1 (en) 2009-03-12
CN101790645B (en) 2012-09-19
CN101790645A (en) 2010-07-28
DE102007040461A1 (en) 2009-03-05

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