EP2587067A2 - Multiple coaxial pump - Google Patents

Multiple coaxial pump Download PDF

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Publication number
EP2587067A2
EP2587067A2 EP12180724.2A EP12180724A EP2587067A2 EP 2587067 A2 EP2587067 A2 EP 2587067A2 EP 12180724 A EP12180724 A EP 12180724A EP 2587067 A2 EP2587067 A2 EP 2587067A2
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EP
European Patent Office
Prior art keywords
pump
pipe
single pump
total
pressure pipe
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.)
Withdrawn
Application number
EP12180724.2A
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German (de)
French (fr)
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EP2587067A3 (en
Inventor
Claus-Heinrich Gößlinghoff
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Vaillant GmbH
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Vaillant GmbH
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Publication date
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Publication of EP2587067A2 publication Critical patent/EP2587067A2/en
Publication of EP2587067A3 publication Critical patent/EP2587067A3/en
Withdrawn legal-status Critical Current

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    • 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
    • F04D13/12—Combinations of two or more 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
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0072—Installation or systems with two or more pumps, wherein the flow path through the stages can be changed, e.g. series-parallel

Definitions

  • the invention relates to a pump.
  • Pumps which can pump fluids with very small as well as very large flow rates or delivery heights, usually work with relatively poor efficiency. If several pumps are operated together, they require a large installation space.
  • DE 37 43 261 A1 discloses a pump with two individual pumps, in which the two individual pumps provide different pressures and flow rates due to design.
  • the aim of the invention is to provide a compact pump with a large, variable range of application with respect to the volume flow and the delivery height.
  • the pressure tube of a pump can be connected via a connecting channel with the suction tube of another pump.
  • the pump arrangement can be made particularly compact and cost-effective.
  • An advantageous structure may consist in that the individual pumps each have separate drive rotors, but these act on a common two-part stator. A space-saving design results when the drive shaft of a single pump runs within the drive shaft of another single pump.
  • the deflecting member (12, 13) may consist of at least one throttle flap which can easily move about an axis and sealingly closes on stops (24, 25).
  • a further pump for conveying a further medium can be arranged with a separate flow path on the housing. It is particularly advantageous if the further pump is driven via the same drive shaft as another single pump or via a separate drive shaft with motor, which runs within the drive shafts of the other pumps.
  • FIG. 1 shows a pump unit according to the invention with two individual pumps 1, 2 in a housing 5.
  • the individual pumps 1, 2 are centrifugal pumps; but it can also find other pump types use.
  • the first single pump 1 has a suction pipe 8 and a pressure pipe 10, between which a pump wheel 23, which is connected via a drive shaft 16 with a drive rotor 14, is located.
  • the second single pump 2 also has a suction pipe 9 and a pressure pipe 11, between which a pump impeller 22, which is connected via a drive shaft 17 with another drive rotor 15, is located.
  • the two drive rotors 14, 15 have the same stator 18.
  • the drive shaft 17 of the second single pump 2 extends within the drive shaft 16 of the first single pump 1.
  • the housing 5 has a housing inlet 6 with a Bactsaugrohr 3; this is connected to the suction pipes 8, 9 of the individual pumps 1, 2.
  • a deflecting member 12 in the form of a butterfly valve with 3 sealing stops 25.
  • the housing 5 further has a housing outlet 7 with a total pressure pipe 4; this is connected to the pressure pipes 10, 11 of the individual pumps 1, 2.
  • a deflecting member 13 in the form of a butterfly valve with 2 sealing stops 24.
  • a connecting channel 27 is arranged between the total intake manifold 3 and the total pressure pipe 4. At the ends of which are the two butterfly valves 12, 13th
  • FIG. 1 the pump unit is in parallel operation of the two individual pumps 1, 2.
  • the butterfly valve 12 is switched such that the total intake pipe 3 with the two suction pipes 8, 9 of the individual pumps 1, 2 is connected.
  • the connecting channel 27 is sealed by the butterfly valve 12 to the total intake manifold 3.
  • the shut-off valve 13 is connected such that the total pressure pipe 4 is connected to the two pressure pipes 10, 11 of the individual pumps 1, 2 and the connecting channel 27 is sealed to the total pressure pipe 4.
  • the flow thus passes from the total intake pipe 3 in parallel into both individual pumps 1, 2 and from there into the total pressure pipe 4 in parallel.
  • FIG. 2 shows the pump set in serial mode for high head.
  • the butterfly valve 12 is now switched so that the total intake pipe 3 is connected to the suction pipe 8 of the first single pump 1.
  • the connecting channel 27 is connected by the position of the butterfly valve 12 to the suction pipe 9 of the second single pump 2.
  • the butterfly valve 13 is switched such that the total pressure pipe 4 with the pressure pipe 11 1 of the second single pump 2 and the pressure pipe 10 of the first single pump 1 are connected to the connecting channel 27.
  • the flow passes from the total intake manifold 3 in series first in the first single pump 1 and from there via the connecting channel 27 and the second single pump 2 in the total pressure pipe. 4
  • FIG. 3 shows the pump unit in solo operation.
  • the butterfly valve 12 is as in serial operation in FIG. 2 connected such that the total intake pipe 3 with the suction pipe. 8 the first single pump 1 is connected.
  • the butterfly valve 13 however, as in parallel operation in FIG. 1 connected. The flow passes from the total intake 3 only in the first single pump 1 and from there into the total pressure pipe 4; the second single pump 2 is not flowed through. This operating mode is suitable for small volume flows and small delivery heights.
  • FIG. 4 shows a variant in which a third single pump 19 for conveying a further fluid flow to the housing 5 is arranged next to the second single pump 2.
  • the third single pump 9 has an impeller 26 between a suction pipe 20 and a pressure pipe 21.
  • the third single pump 19 is driven by its own drive shaft 29 and its own motor 28. As a result, a second fluid can be conveyed independently.
  • FIG. 5 shows a variant in which a third single pump 19 is arranged for conveying a further fluid flow to the housing 5 adjacent to the second single pump 2.
  • the third single pump 19 has an impeller 26 between a suction pipe 20 and a pressure pipe 21.
  • the two individual pumps 2, 19 are driven by the common drive shaft 17.
  • the invention is not limited to the two embodiments, but also includes other combinations of the described details, other pump types, other switching devices and other drive units.

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

Abstract

The pump unit has two individual pumps (1,2) in a housing (5) with a total intake pipe (3) on the housing inlet (6) and a total pressure pipe (4) on the housing outlet (7). The individual pumps comprise intake pipes (8,9) and pressure pipes (10,11). The total intake pipe and the total pressure pipe are connected in parallel with the individual pumps by a one-or multi-part deflecting unit (13). The total intake pipe is connected with the intake pipe of the former individual pump and the pressure pipe of the former individual pump is connected with the intake pipe of the latter individual pump.

Description

Die Erfindung bezieht sich auf eine Pumpe.The invention relates to a pump.

Bei Pumpen besteht das Problem, dass diese gemäß dem Stand der Technik bei günstigem Wirkungsgrad entweder einen hohen Förderdruck oder eine hohe Fördermenge erzielen können. Pumpen, welche Fluide sowohl mit sehr kleine, als auch sehr große Fördermengen oder Förderhöhen pumpen können, arbeiten dabei meist mit relativ schlechtem Wirkungsgrad. Werden mehrere Pumpen gemeinsam betrieben, so benötigen diese einen großen Bauraum.In pumps, there is the problem that they can achieve either a high discharge pressure or a high flow rate according to the prior art with favorable efficiency. Pumps, which can pump fluids with very small as well as very large flow rates or delivery heights, usually work with relatively poor efficiency. If several pumps are operated together, they require a large installation space.

Aus DE 1808411 ist ein Pumpenaggregat mit zwei Kreiselpumpen bekannt, bei der beide Pumpen in Reihe geschaltet oder eine Pumpe abgeschaltet werden kann.Out DE 1808411 a pump unit with two centrifugal pumps is known, in which both pumps can be connected in series or a pump can be switched off.

DE 37 43 261 A1 offenbart eine Pumpe mit zwei Einzelpumpen, bei der die beiden Einzelpumpen bauartbedingt unterschiedliche Drücke und Volumenströme bereitstellen. DE 37 43 261 A1 discloses a pump with two individual pumps, in which the two individual pumps provide different pressures and flow rates due to design.

Ziel der Erfindung ist es, eine kompakte Pumpe mit einem großen, variablen Einsatzbereich bezüglich des Volumenstroms und der Förderhöhe zu schaffen.The aim of the invention is to provide a compact pump with a large, variable range of application with respect to the volume flow and the delivery height.

Erfindungsgemäß wird dies gemäß den Merkmalen des unabhängigen Anspruchs 1 dadurch gelöst, dass in einem Gehäuse zwei Pumpen angeordnet sind, welche je nach Bedarf seriell oder parallel betrieben werden können. Optional kann auch nur eine der beiden Pumpen betrieben werden.According to the invention this is achieved according to the features of independent claim 1, characterized in that two pumps are arranged in a housing, which can be operated serially or in parallel as needed. Optionally, only one of the two pumps can be operated.

Vorteilhafte Ausgestaltungen der Erfindung ergeben sich durch die Merkmale der abhängigen Ansprüche.Advantageous embodiments of the invention will become apparent from the features of the dependent claims.

Für den Seriellbetrieb kann das Druckrohr einer Pumpe über einen Verbindungskanal mit dem Saugrohr einer anderen Pumpe verbunden werden.For serial operation, the pressure tube of a pump can be connected via a connecting channel with the suction tube of another pump.

Verfügen die Einzelpumpen über einen gemeinsamen Antriebsrotor, so kann die Pumpenanordnung besonders kompakt und kostengünstig erfolgen. Ein vorteilhafter Aufbau kann darin bestehen, dass die Einzelpumpen zwar über jeweils separate Antriebsrotoren verfügen, diese jedoch auf einen gemeinsamen zweigeteilten Stator einwirken. Ein platzsparender Aufbau ergibt sich, wenn die Antriebswelle einer Einzelpumpe innerhalb der Antriebswelle einer anderen Einzelpumpe verläuft.If the individual pumps have a common drive rotor, the pump arrangement can be made particularly compact and cost-effective. An advantageous structure may consist in that the individual pumps each have separate drive rotors, but these act on a common two-part stator. A space-saving design results when the drive shaft of a single pump runs within the drive shaft of another single pump.

Das Umlenkorgan (12, 13) kann aus mindestens einer Drosselklappe bestehen, die sich leicht um eine Achse bewegen kann und an Anschlägen (24, 25) dichtend schließt.The deflecting member (12, 13) may consist of at least one throttle flap which can easily move about an axis and sealingly closes on stops (24, 25).

In einer optionalen Ausgestaltung kann eine weitere Pumpe zur Förderung eines weiteren Mediums mit einem separaten Strömungsweg am Gehäuse angeordnet sein. Hierbei ist besonders vorteilhaft, wenn die weitere Pumpe über dieselbe Antriebswelle angetrieben wird wie eine andere Einzelpumpe oder über eine separate Antriebswelle mit Motor, die innerhalb der Antriebswellen der anderen Pumpen verläuft.In an optional embodiment, a further pump for conveying a further medium can be arranged with a separate flow path on the housing. It is particularly advantageous if the further pump is driven via the same drive shaft as another single pump or via a separate drive shaft with motor, which runs within the drive shafts of the other pumps.

Die Erfindung wird nun anhand der Figuren detaillierter erläutert. Hierbei zeigen:

  • Figur 1 ein erfindungsgemäßes Pumpenaggregat in einer Schaltstellung (Parallelschaltung),
  • Figur 2 dasselbe Pumpenaggregat in einer anderen Schaltstellung (Reihenschaltung),
  • Figur 3 und 3a dasselbe Pumpenaggregat in einer dritten Schaltstellung, sowie
  • Figur 4 eine Variante des erfindungsgemäßes Pumpenaggregats wie Figuren 1 und 2 jedoch mit zusätzlicher Pumpe für abweichendes Medium.
The invention will now be explained in more detail with reference to the figures. Hereby show:
  • FIG. 1 an inventive pump unit in a switching position (parallel connection),
  • FIG. 2 the same pump set in another switching position (series connection),
  • FIG. 3 and 3a same pump unit in a third switching position, as well
  • FIG. 4 a variant of the inventive pump unit as FIGS. 1 and 2 however with additional pump for different medium.

Figur 1 zeigt ein erfindungsgemäßes Pumpenaggregat mit zwei Einzelpumpen 1, 2 in einem Gehäuse 5. Bei den Einzelpumpen 1, 2 handelt es sich um Kreiselpumpen; es können aber auch andere Pumpentypen Verwendung finden. Die erste Einzelpumpe 1 verfügt über ein Saugrohr 8 und ein Druckrohr 10, zwischen denen sich ein Pumpenrad 23, das über eine Antriebswelle 16 mit einem Antriebsrotor 14 verbunden ist, befindet. Die zweite Einzelpumpe 2 verfügt ebenfalls über ein Saugrohr 9 und ein Druckrohr 11, zwischen denen sich ein Pumpenrad 22, das über eine Antriebswelle 17 mit einem anderen Antriebsrotor 15 verbunden ist, befindet. Die beiden Antriebsrotoren 14, 15 verfügen über denselben Stator 18. Die Antriebswelle 17 der zweiten Einzelpumpe 2 verläuft innerhalb der Antriebswelle 16 der ersten Einzelpumpe 1. Das Gehäuse 5 verfügt über einen Gehäuseeingang 6 mit einem Gesamtsaugrohr 3; dieses ist mit den Saugrohren 8, 9 der Einzelpumpen 1, 2 verbunden. Im Übergang zwischen dem Gesamtsaugrohr 3 und den beiden Saugrohren 8, 9 befindet sich ein Umlenkorgan 12 in Form einer Absperrklappe mit 3 dichtenden Anschlägen 25. Das Gehäuse 5 verfügt ferner über einen Gehäuseausgang 7 mit einem Gesamtdruckrohr 4; dieses ist mit den Druckrohren 10, 11 der Einzelpumpen 1, 2 verbunden. Im Übergang zwischen dem Gesamtdruckrohr 4 und den beiden Druckrohren 10, 11 befindet sich ein Umlenkorgan 13 in Form einer Absperrklappe mit 2 dichtenden Anschlägen 24. Zwischen dem Gesamtsaugrohr 3 und dem Gesamtdruckrohr 4 ist ein Verbindungskanal 27 angeordnet. An dessen Enden befinden sich die beiden Absperrklappen 12, 13. FIG. 1 shows a pump unit according to the invention with two individual pumps 1, 2 in a housing 5. The individual pumps 1, 2 are centrifugal pumps; but it can also find other pump types use. The first single pump 1 has a suction pipe 8 and a pressure pipe 10, between which a pump wheel 23, which is connected via a drive shaft 16 with a drive rotor 14, is located. The second single pump 2 also has a suction pipe 9 and a pressure pipe 11, between which a pump impeller 22, which is connected via a drive shaft 17 with another drive rotor 15, is located. The two drive rotors 14, 15 have the same stator 18. The drive shaft 17 of the second single pump 2 extends within the drive shaft 16 of the first single pump 1. The housing 5 has a housing inlet 6 with a Gesamttsaugrohr 3; this is connected to the suction pipes 8, 9 of the individual pumps 1, 2. In the transition between the total intake pipe 3 and the two intake pipes 8, 9 is a deflecting member 12 in the form of a butterfly valve with 3 sealing stops 25. The housing 5 further has a housing outlet 7 with a total pressure pipe 4; this is connected to the pressure pipes 10, 11 of the individual pumps 1, 2. In the transition between the total pressure pipe 4 and the two pressure pipes 10, 11 is a deflecting member 13 in the form of a butterfly valve with 2 sealing stops 24. Between the total intake manifold 3 and the total pressure pipe 4, a connecting channel 27 is arranged. At the ends of which are the two butterfly valves 12, 13th

In Figur 1 befindet sich das Pumpenaggregat im Parallelbetrieb der beiden Einzelpumpen 1, 2. Die Absperrklappe 12 ist derart geschaltet, dass das Gesamtsaugrohr 3 mit den beiden Saugrohren 8, 9 der Einzelpumpen 1, 2 verbunden ist. Zugleich wird der Verbindungskanal 27 durch die Absperrklappe 12 zum Gesamtsaugrohr 3 abgedichtet. Die Absperrklappe 13 ist derart geschaltet, dass das Gesamtdruckrohr 4 mit den beiden Druckrohren 10, 11 der Einzelpumpen 1, 2 verbunden und der Verbindungskanal 27 zum Gesamtdruckrohr 4 abgedichtet ist. Die Strömung gelangt somit vom Gesamtsaugrohr 3 parallel in beide Einzelpumpen 1, 2 und von dort parallel in das Gesamtdruckrohr 4. Mittels dieser Schaltung kann ein besonders hoher Volumenstrom erreicht werden.In FIG. 1 the pump unit is in parallel operation of the two individual pumps 1, 2. The butterfly valve 12 is switched such that the total intake pipe 3 with the two suction pipes 8, 9 of the individual pumps 1, 2 is connected. At the same time, the connecting channel 27 is sealed by the butterfly valve 12 to the total intake manifold 3. The shut-off valve 13 is connected such that the total pressure pipe 4 is connected to the two pressure pipes 10, 11 of the individual pumps 1, 2 and the connecting channel 27 is sealed to the total pressure pipe 4. The flow thus passes from the total intake pipe 3 in parallel into both individual pumps 1, 2 and from there into the total pressure pipe 4 in parallel. By means of this circuit, a particularly high volume flow can be achieved.

Figur 2 zeigt das Pumpenaggregat im Seriellbetrieb für große Förderhöhe. Die Absperrklappe 12 ist nun so geschaltet, dass das Gesamtsaugrohr 3 mit dem Saugrohr 8 der ersten Einzelpumpe 1 verbunden ist. Zugleich wird der Verbindungskanal 27 durch die Stellung der Absperrklappe 12 zum Saugrohr 9 der zweiten Einzelpumpe 2 verbunden. Die Absperrklappe 13 ist derart geschaltet, dass das Gesamtdruckrohr 4 mit dem Druckrohr 11 1 der zweiten Einzelpumpe 2 und das Druckrohr 10 des ersten Einzelpumpe 1 mit dem Verbindungskanal 27 verbunden sind. Die Strömung gelangt vom Gesamtsaugrohr 3 seriell zunächst in die erste Einzelpumpe 1 und von dort über den Verbindungskanal 27 und die zweite Einzelpumpe 2 in das Gesamtdruckrohr 4. FIG. 2 shows the pump set in serial mode for high head. The butterfly valve 12 is now switched so that the total intake pipe 3 is connected to the suction pipe 8 of the first single pump 1. At the same time the connecting channel 27 is connected by the position of the butterfly valve 12 to the suction pipe 9 of the second single pump 2. The butterfly valve 13 is switched such that the total pressure pipe 4 with the pressure pipe 11 1 of the second single pump 2 and the pressure pipe 10 of the first single pump 1 are connected to the connecting channel 27. The flow passes from the total intake manifold 3 in series first in the first single pump 1 and from there via the connecting channel 27 and the second single pump 2 in the total pressure pipe. 4

Figur 3 zeigt das Pumpenaggregat beim Solobetrieb. Die Absperrklappe 12 ist wie beim Seriellbetrieb in Figur 2 derart geschaltet, dass das Gesamtsaugrohr 3 mit dem Saugrohr 8 der ersten Einzelpumpe 1 verbunden ist. Die Absperrklappe 13 ist hingegen wie im Parallelbetrieb in Figur 1 geschaltet. Die Strömung gelangt vom Gesamtsaugrohr 3 nur noch in die erste Einzelpumpe 1 und von dort in das Gesamtdruckrohr 4; die zweite Einzelpumpe 2 wird nicht durchströmt. Diese Betriebsart ist für kleine Volumenströme und kleine Förderhöhen geeignet. FIG. 3 shows the pump unit in solo operation. The butterfly valve 12 is as in serial operation in FIG. 2 connected such that the total intake pipe 3 with the suction pipe. 8 the first single pump 1 is connected. The butterfly valve 13, however, as in parallel operation in FIG. 1 connected. The flow passes from the total intake 3 only in the first single pump 1 and from there into the total pressure pipe 4; the second single pump 2 is not flowed through. This operating mode is suitable for small volume flows and small delivery heights.

Figur 4 zeigt eine Variante bei der eine dritte Einzelpumpe 19 zum Fördern eines weiteren Fluidstroms am Gehäuse 5 neben der zweiten Einzelpumpe 2 angeordnet ist. Die dritte Einzelpumpe 9 verfügt über ein Pumpenrad 26 zwischen einem Saugrohr 20 und einem Druckrohr 21. Die dritte Einzelpumpe 19 wird über eine eigene Antriebswelle 29 und eigenen Motor 28 angetrieben. Dadurch kann ein 2. Fluid unabhängig gefördert werden. FIG. 4 shows a variant in which a third single pump 19 for conveying a further fluid flow to the housing 5 is arranged next to the second single pump 2. The third single pump 9 has an impeller 26 between a suction pipe 20 and a pressure pipe 21. The third single pump 19 is driven by its own drive shaft 29 and its own motor 28. As a result, a second fluid can be conveyed independently.

Figur 5 zeigt eine Variante, bei der eine dritte Einzelpumpe 19 zum Fördern eine weiteren Fluidstroms am Gehäuse 5 neben der zweiten Einzelpumpe 2 angeordnet ist. Die dritte Einzelpumpe 19 verfügt über ein Pumpenrad 26 zwischen einem Saugrohr 20 und einem Druckrohr 21. Die beiden Einzelpumpen 2, 19 werden über die gemeinsame Antriebswelle 17 angetrieben. FIG. 5 shows a variant in which a third single pump 19 is arranged for conveying a further fluid flow to the housing 5 adjacent to the second single pump 2. The third single pump 19 has an impeller 26 between a suction pipe 20 and a pressure pipe 21. The two individual pumps 2, 19 are driven by the common drive shaft 17.

Die Erfindung ist nicht auf die beiden Ausführungsbeispiele beschränkt, sondern umfasst auch andere Kombinationen der beschriebenen Details, andere Pumpentypen, andere Umschaltorgane und andere Antriebseinheiten.The invention is not limited to the two embodiments, but also includes other combinations of the described details, other pump types, other switching devices and other drive units.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

  • Einzelpumpe (1)Single pump (1)
  • Einzelpumpe (2)Single pump (2)
  • Gesamtsaugrohr (3)Total intake manifold (3)
  • Gesamtdruckrohr (4)Total pressure pipe (4)
  • Gehäuse (5)Housing (5)
  • Gehäuseeingang (6)Housing input (6)
  • am Gehäuseausgang (7)at the housing outlet (7)
  • Saugrohr (8)Suction tube (8)
  • Saugrohr (9)Suction tube (9)
  • Druckrohr (10),Pressure tube (10),
  • Druckrohr (11),Pressure tube (11),
  • Umlenkorgan (12)Deflection element (12)
  • Umlenkorgan (13)Deflection element (13)
  • Antriebsrotor (14)Drive rotor (14)
  • Antriebsrotor (15)Drive rotor (15)
  • Antriebswelle (16)Drive shaft (16)
  • Antriebswelle (17)Drive shaft (17)
  • Stator (18)Stator (18)
  • Pumpe (19)Pump (19)
  • Saugrohr (20)Suction tube (20)
  • Druckrohr (21),Pressure tube (21),
  • Pumpenrad (22)Impeller (22)
  • Pumpenrad (23)Impeller (23)
  • Anschlag (24)Stop (24)
  • Anschlag (25)Stop (25)
  • Pumpenrad (26)Impeller (26)
  • Verbindungskanal (27)Connecting channel (27)

Claims (8)

Pumpenaggregat mit mindestens zwei Einzelpumpen (1, 2) in einem Gehäuse (5) mit genau einem Gesamtsaugrohr (3) am Gehäuseeingang (6) und genau einem Gesamtdruckrohr (4) am Gehäuseausgang (7), wobei jede Einzelpumpe (1, 2) über ein Saugrohr (8, 9) und ein Druckrohr (10, 11) verfügt,
dadurch gekennzeichnet, dass ein ein- oder mehrteiliges Umlenkorgan (12, 13) vorhanden ist, mittels dessen
das Gesamtsaugrohr (3) und das Gesamtdruckrohr (4) parallel mit den Einzelpumpen (1, 2) verbindbar sind
oder das Gesamtsaugrohr (3) mit dem Saugrohr (8) der ersten Einzelpumpe (1), das Druckrohr (10) der ersten Einzelpumpe (1) mit dem Saugrohr (9) einer zweiten Einzelpumpe (2) verbindbar ist und das Druckrohr (11) der zweiten Einzelpumpe (2) direkt oder über mindestens eine weitere Einzelpumpe mit dem Gesamtdruckrohr (4) verbindbar ist
und vorzugsweise mindestens eine Einzelpumpe (2) von einer Durchströmung abkoppelbar ist.Pump unit with at least two individual pumps (1, 2) in a housing (5) with exactly one Gesamttsaugrohr (3) at the housing inlet (6) and exactly one total pressure pipe (4) at the housing outlet (7), each individual pump (1, 2) via a suction tube (8, 9) and a pressure tube (10, 11) has,
characterized in that a one- or multi-part deflecting member (12, 13) is present, by means of which
the total intake pipe (3) and the total pressure pipe (4) can be connected in parallel with the individual pumps (1, 2)
or the total intake pipe (3) with the suction pipe (8) of the first single pump (1), the pressure pipe (10) of the first single pump (1) with the suction pipe (9) of a second single pump (2) is connectable and the pressure pipe (11) the second single pump (2) is connectable directly or via at least one further single pump to the total pressure pipe (4)
and preferably at least one single pump (2) can be decoupled from a flow. Pumpenaggregat nach Anspruch 1, dadurch gekennzeichnet, dass zwischen dem Gesamtsaugrohr (3) und dem Gesamtdruckrohr (4) ein mittels des ein- oder mehrteiliges Umlenkorgans (12, 13) abdichtbarer Verbindungskanal (27) angeordnet ist.Pump unit according to claim 1, characterized in that between the total intake pipe (3) and the total pressure pipe (4) by means of the one- or multi-part deflecting member (12, 13) sealable connecting channel (27) is arranged. Pumpenaggregat nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Einzelpumpen (1, 2) über einen gemeinsamen Antriebsrotor verfügen.Pump unit according to claim 1 or 2, characterized in that the individual pumps (1, 2) have a common drive rotor. Pumpenaggregat nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Einzelpumpen (1, 2) über jeweils separate Antriebsrotoren (14, 15) verfügen.Pump unit according to claim 1 or 2, characterized in that the individual pumps (1, 2) each have separate drive rotors (14, 15). Pumpenaggregat nach Anspruch 4, dadurch gekennzeichnet, dass die Antriebsrotoren (14, 15) über einen gemeinsamen Stator (18) verfügen.Pump unit according to claim 4, characterized in that the drive rotors (14, 15) have a common stator (18). Pumpenaggregat nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass die Antriebswelle (17) einer Einzelpumpe (2) innerhalb der Antriebswelle (16) einer anderen Einzelpumpe (1) verläuft.Pump unit according to claim 4 or 5, characterized in that the drive shaft (17) of a single pump (2) within the drive shaft (16) of another single pump (1). Pumpenaggregat nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das ein- oder mehrteiliges Umlenkorgan (12, 13) aus mindestens einer Drosselklappe (12, 13) besteht.Pump unit according to one of claims 1 to 6, characterized in that the one- or multi-part deflecting member (12, 13) consists of at least one throttle valve (12, 13). Pumpenaggregat nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass eine weitere Pumpe (19) mit einem separaten Strömungsweg (20, 21) am Gehäuse (5) angeordnet ist, wobei die weiteren Pumpe (19) über dieselbe Antriebswelle (17) angetrieben wird wie eine andere Einzelpumpe (2).Pump unit according to one of claims 1 to 7, characterized in that a further pump (19) with a separate flow path (20, 21) on the housing (5) is arranged, wherein the further pump (19) via the same drive shaft (17) driven becomes like another single pump (2).
EP12180724.2A 2011-10-26 2012-08-16 Multiple coaxial pump Withdrawn EP2587067A3 (en)

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DE102011116957A DE102011116957A1 (en) 2011-10-26 2011-10-26 Multiple coaxial pump

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EP2587067A3 (en) 2018-05-09

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