EP2778423A1 - Centrifugal pump assembly - Google Patents

Centrifugal pump assembly Download PDF

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Publication number
EP2778423A1
EP2778423A1 EP13158591.1A EP13158591A EP2778423A1 EP 2778423 A1 EP2778423 A1 EP 2778423A1 EP 13158591 A EP13158591 A EP 13158591A EP 2778423 A1 EP2778423 A1 EP 2778423A1
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EP
European Patent Office
Prior art keywords
control
centrifugal pump
external
pump unit
speed
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
EP13158591.1A
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German (de)
French (fr)
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EP2778423B1 (en
Inventor
SENCZEK Rolf-Werner
Blad Thomas
DØSSING Bent
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Grundfos Holdings AS
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Grundfos Holdings AS
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Application filed by Grundfos Holdings AS filed Critical Grundfos Holdings AS
Priority to TR2018/06831T priority Critical patent/TR201806831T4/en
Priority to PL13158591T priority patent/PL2778423T3/en
Priority to EP13158591.1A priority patent/EP2778423B1/en
Priority to CN201480013981.1A priority patent/CN105121857B/en
Priority to PCT/EP2014/053515 priority patent/WO2014139784A1/en
Publication of EP2778423A1 publication Critical patent/EP2778423A1/en
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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
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • 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
    • F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine

Definitions

  • the invention relates to a Kneelpumpenaggregot, in particular a Schuungsum stiilzpumpenaggregat with the features specified in the preamble of claim 1.
  • Centrifugal pump units of this type typically consist of a centrifugal pump and a driving this electric motor, an electronic speed controller, z.
  • a frequency converter for the motor and an internal electronic control in which the manipulated variable is the speed of the motor wherein speed controller and control form part of the unit and are typically arranged in a terminal or electronic box next to the pump and motor housing.
  • the control variable of such a scheme is z.
  • the internal electronic control not only provides a variety of control curves, such as constant pressure curves, proportional pressure curves or the like that can be selected, but that the unit has an internal microprocessor with appropriate software , which is able to automatically adapt to the heating system on the basis of the conditions in the heating system, in particular the self-adjusting pressure curves, the changing temperature of the pumped liquid, the flow rate and the like, the setpoint variables of the control.
  • This self-learning setpoint adjustment of the internal control has the advantage that the pump adapts in almost ideal way to the requirements of the heating system and thus can be operated with comparatively low electrical energy, adapted to the situation.
  • frequency converter controlled Schutsumicalzpumpenaggregate include the prior art, in which an external controller for speed control of the pump is provided. This external control is typically part of the central control of the heating system.
  • the interface for speed control is a control input to the pump, via which a pulse width modulated signal is transmitted, the pulse width determines the effective voltage or frequency and thus the speed of the pump.
  • Such pumps can be found for example in gas heating, as they are to be found as compact heaters in apartments, but also find use in smaller houses.
  • centrifugal pump aggregates Since the hydraulic requirements in both cases are often the same, the centrifugal pump aggregates practically do not differ in their mechanical structure. However, there are always two production series to produce with the same connection data of the pump housing. Also have to be kept in terms of replacement always for each of the above applications different centrifugal pump units, which is complex and expensive.
  • heating circulation pumps of larger design as installed in parallel in groups of two to eight pumps, for example, it counts to the prior art (Grundfos pump type Magna UPE) to control these individual heating circulation pumps, each having an internal electronic control, from the outside, in which case not the internal control is influenced as such, but only the setpoint specifications.
  • the invention has the object, a generic Kreiselpumpenaggregot in such a way that it can be used both in a heating system with operation of the internal electronic control and in a heating with external control or combined use.
  • the centrifugal pump unit according to the invention in particular Thompsonungsum cilantrolzpumpenaggregat, has a centrifugal pump, which is driven by an electric motor.
  • the unit also has an electronic speed controller for the engine and an internal electronic control in which the manipulated variable is the speed of the motor, wherein the speed controller and the control form part of the unit.
  • a signal input for the external control of the motor are provided and means for switching from the internal electronic control to an external speed control or for connecting an external speed control.
  • the basic idea of the present invention is thus to unite the above-described types of pumps known from the prior art, but moreover also to provide combinations with regard to the control / regulation which were hitherto not possible in this form.
  • the centrifugal pump assembly according to the invention can operate advantageously both with its internal electronic control and with an external speed control and combinations thereof, for example by the unit works with the internal control and is controlled only in the case of connection by an external speed control. It is therefore not absolutely necessary to drive only in one or the other mode but combinations are also possible in an advantageous manner.
  • the signal input on the centrifugal pump assembly is formed by an electrical connection plug arranged on the unit housing.
  • Connector according to the invention may be both a male and a female connector part.
  • Such a signal input currently counts in heating circulation pumps to the prior art, as they are used in heating and are speed controlled by means of a pulse-width modulated signal.
  • a signal input can also be formed in another form, for example by an electrical filter, when the signal is transmitted modulated via the mains cable or by an infrared, Bluetooth or other receiver when the signal is to be transmitted wirelessly.
  • the means for switching the internal electronic control to an external speed control or to connect an external speed control may be designed so that they preferably determine automatically whether an external control is connected or not and when determining a connected external control to the external control constantly or, if necessary, as needed switch. For example, it can be determined at intervals by means of a suitable electronic circuit whether the signal input is connected to an external controller or not. Since also the external control typically works electronically, this can be determined either by a corresponding "hand shaking" or by suitable calibration cycles.
  • a simple switching by means of a switch on the pump unit done which is formed for example by a contact within the electrical connector for the signal input, which is closed when inserting the mating connector, by a microswitch in this area, by a Hall sensor or the like ,
  • a switch is particularly useful when switching from the internal electronic control to an external speed control should be done, so for example one and the same pump unit as a replacement for externally driven in terms of speed centrifugal pump unit in a heating or working with internal electronic control heating circulation pump to be used in a heating system.
  • the centrifugal pump unit has a control that has a self-learning setpoint adjustment, which automatically adapts the operating points of the pump to the requirements of the system.
  • This self-learning setpoint adjustment can advantageously be used not only when installing the pump as a stand-alone solution in a heating system, but possibly also when used in a heating boiler, in which an external speed control is provided. It is then expedient to provide this external speed control only for connection, ie for predetermined operating situations in which, for example, a large amount of heat to be dissipated quickly or in emergency situations, only recognizable by the boiler control are.
  • centrifugal pump assembly even when occupying the signal input for external control of the motor with the internal control with the self-learning setpoint adjustment, only in these particular emergency situations of the external control, a priority speed signal is delivered.
  • the centrifugal pump assembly according to the invention is designed so that not only a speed control can take place via the external control, but also that the self-learning setpoint adjustment via the external control can be activated and deactivated.
  • the advantageous self-learning setpoint adjustment which is provided in the internal control electronics of the centrifugal pump assembly, targeted to be used in heating systems that otherwise give only on their own control a speed signal for the Kreiselpumpenaggregot. It is understood that in this case the external control must be designed accordingly.
  • external switching means are provided, with which the self-learning setpoint adjustment of the internal control can be reset and / or one or more control curves of the internal control can be selected or changed.
  • the Kreiselpumpenaggregot is so control technology adapted so that it not only as in known Schuungsum stiilzpumpenaggregaten according to the prior art, which have a self-learning setpoint adjustment and numerous control curves offer only by manual intervention from the outside on the control panel of the pump unit is controllable, but now also by external Switching means, so controlled by electrical / electronic signals from the outside. It can therefore be done according to this development, a reset of the self-learning control by a corresponding external command, for example, from the electronic control of the heating from, via which also the external control. Very advantageous is the access to the control curves provided in the internal control, so that can be done via an external control access to all the essential control and regulation functions of the centrifugal pump unit.
  • an external switch is preferably provided with which the setpoint adjustment of the internal control electronics of the centrifugal pump assembly can be reset and / or one or more control curves of the internal control can be changed.
  • This switch is arranged at a distance from the pump unit and at least signal, preferably line connected. It may preferably be arranged in the control panel of the heating system, in which the centrifugal pump unit is installed.
  • the aggregate side separating means are then provided, which separate the speed control signals from the other control signals and further process accordingly.
  • the centrifugal pump unit according to the invention is provided for supplying a Mehrrois Vietnamesesystems, as is typically the case with heating circulation pumps for spas in which a heating circuit for space heating and a heating circuit for domestic water heating is provided.
  • the centrifugal pump unit has means for detecting the circulating heating circuit, preferably to detect automatically which of the heating circuits must be operated and redirect accordingly. This recognition can be done via the Pressure course take place at the pump, namely, during the switching from one to the other heating circuit briefly both heating circuits are open and thus a pressure drop can be detected.
  • centrifugal pump unit which can be controlled either manually via switches on the outside of the unit or possibly wirelessly via a remote control, a smartphone or the like, or can be selected via control means are that are typically provided boiler control side.
  • Fig. 1 Pump unit shown is such that can be used both as a stand-alone unit in a heating system and as a speed-controlled unit in a heating boiler, in which the speed control by means of the thermal management, ie externally.
  • the unit consists of a centrifugal pump 1, the pump housing 2 is here exemplified as an inline housing and a suction port 3 and a pressure port 4 has. It is understood that in principle any other suitable housing form can be used here.
  • a gyro 5 is rotatably mounted, which sits on a shaft 6, which is a Electric motor 7 is driven, which sits in a motor housing 8, which is bolted to the pump housing 2.
  • a terminal box 9 is attached, which engages over the motor housing 8 and at the same time forms an electronics housing for the electronics arranged there.
  • the front side of the terminal box 9 forms an operating panel 10 of the pump unit.
  • Within the terminal box 9 is not only the Konnekttechnik to the motor windings, there is also an electronic speed controller in the form of a frequency converter 11 is provided and control electronics 12th
  • a plug 13 which serves for connection to a power cord, with which the pump unit can be connected to a local AC power supply, via which the electrical supply of the motor and the entire electronics.
  • a further connector 14 is arranged, which is for connecting an external controller, for. B. a boiler control of a heating is used and with the at least one PWM signal for direct speed control via the external control is transmitted.
  • the heating circulation pump is installed as a stand-alone pump in a heating system, this plug 18 is not required for external control, it is then closed by a blind plug 15.
  • the unit can then be used as Bankungsum stiilzpumpenaggregat, where it has an internal electronic control 16, via which a plurality of control curves can be specified.
  • a self-learning setpoint adjustment is provided in the internal control. Via a button 17 different operating modes / control curves / profiles can be adjusted from the outside to the control panel of the terminal box 9.
  • a display 18, which is designed here in the form of five LEDs the respective setting be read.
  • a display can also be provided here which represents alphanumerically. The formation of the aggregate corresponds in this respect to the Grundfos Group under the type designation Alpha II distributed high efficiency pump.
  • control electronics 12 is switched by means of an electronic switch 20 so that when a PWM signal is applied to the input formed by the plug 14, via the frequency converter 11 generates a corresponding speed signal for the motor 7 becomes.
  • the control electronics 12 then switches to the external input, the internal control can then be completely or partially turned off.

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

Abstract

The assembly i.e. circulating heating pump assembly, has a centrifugal pump (1) that is driven by an electric motor (7). An electronic speed controller or frequency converter is arranged for the motor, where the speed controller is arranged with an internal electronic controller. A signal input is provided for external activation of the motor. A switching unit or switch is arranged for switching of the internal electronic controller on an external speed control or for connecting the external speed control.

Description

Die Erfindung betrifft ein Kreiselpumpenaggregot, insbesondere ein Heizungsumwälzpumpenaggregat mit den im Oberbegriff des Anspruchs 1 angegebenen Merkmalen.The invention relates to a Kreiselpumpenaggregot, in particular a Heizungsumwälzpumpenaggregat with the features specified in the preamble of claim 1.

Kreiselpumpenaggregate dieser Art bestehen typischerweise aus einer Kreiselpumpe und einem diese antreibenden Elektromotor, einem elektronischen Drehzahlsteller, z. B. einen Frequenzumrichter für den Motor und einer internen elektronischen Regelung, bei welcher die Stellgröße die Drehzahl des Motors ist, wobei Drehzahlsteller und Regelung Teil des Aggregates bilden und typischerweise in einem Klemmen- bzw. Elektronikkasten neben dem Pumpen- und Motorgehäuse angeordnet sind. Die Regelgröße einer solchen Regelung ist z. B. der Differenzdruck zwischen Eingang und Ausgang der Pumpe, der Volumenstrom oder davon abgeleitete Größen.Centrifugal pump units of this type typically consist of a centrifugal pump and a driving this electric motor, an electronic speed controller, z. As a frequency converter for the motor and an internal electronic control in which the manipulated variable is the speed of the motor, wherein speed controller and control form part of the unit and are typically arranged in a terminal or electronic box next to the pump and motor housing. The control variable of such a scheme is z. B. the differential pressure between the input and output of the pump, the flow or derived variables.

Bei modernen Heizungsumwälzpumpen der vorgenannten Art zählt es zum Stand der Technik, dass die interne elektronische Regelung nicht nur eine Vielzahl von Regelkurven, z.B. Konstantdruckkurven, Proportionaldruckkurven oder dergleichen bereitstellt, die angewählt werden können, sondern dass das Aggregat über einen internen Mikroprozessor mit entsprechender Software verfügt, der in der Lage ist, anhand der Gegebenheiten in der Heizungsanlage, insbesondere der sich einstellenden Druckverläufe, der sich ändernden Temperatur des Fördermediums, des Förderstroms und dergleichen, die Sollwertgrößen der Regelung selbsttätig an die Heizungsanlage anzupassen. Diese selbstlernende Sollwertanpassung der internen Regelung hat den Vorteil, dass sich die Pumpe in nahezu idealer Weise an die Anforderungen der Heizungsanlage anpasst und somit situationsangepasst mit vergleichsweise geringer elektrischer Energie betrieben werden kann.In modern heating circulation pumps of the aforementioned type, it is state of the art that the internal electronic control not only provides a variety of control curves, such as constant pressure curves, proportional pressure curves or the like that can be selected, but that the unit has an internal microprocessor with appropriate software , Which is able to automatically adapt to the heating system on the basis of the conditions in the heating system, in particular the self-adjusting pressure curves, the changing temperature of the pumped liquid, the flow rate and the like, the setpoint variables of the control. This self-learning setpoint adjustment of the internal control has the advantage that the pump adapts in almost ideal way to the requirements of the heating system and thus can be operated with comparatively low electrical energy, adapted to the situation.

Andererseits zählen frequenzumrichtergesteuerte Heizungsumwälzpumpenaggregate zum Stand der Technik, bei denen eine externe Steuerung zur Drehzahlsteuerung der Pumpe vorgesehen ist. Diese externe Steuerung ist typischerweise Teil der zentralen Steuerung der Heizungsanlage. Die Schnittstelle zur Drehzahlsteuerung ist ein Steuereingang an der Pumpe, über die ein pulsweitenmoduliertes Signal übermittelt wird, wobei die Pulsweite die effektive Spannung bzw. Frequenz und damit die Drehzahl der Pumpe bestimmt. Derartige Pumpen sind beispielsweise in Gasthermen zu finden, wie sie als Kompaktheizgeräte in Wohnungen anzutreffen sind, aber auch in kleineren Häusern Verwendung finden.On the other hand, frequency converter controlled Heizungsumwälzpumpenaggregate include the prior art, in which an external controller for speed control of the pump is provided. This external control is typically part of the central control of the heating system. The interface for speed control is a control input to the pump, via which a pulse width modulated signal is transmitted, the pulse width determines the effective voltage or frequency and thus the speed of the pump. Such pumps can be found for example in gas heating, as they are to be found as compact heaters in apartments, but also find use in smaller houses.

So haben sich unterschiedliche Pumpenbaureihen etabliert, einerseits diese selbstlernenden Heizungsumwälzpumpen, die in Heizungsanlagen vor Ort verbaut werden und andererseits fremdgesteuerte Heizungsumwälzpumpen, die typischerweise in Heizthermen herstellerseitig verbaut werden.Thus, different pump series have been established, on the one hand these self-learning heating circulating pumps, which are installed in heating systems on site and on the other hand externally controlled heating circulation pumps, which are typically installed in heating systems manufacturer.

Da die hydraulischen Anforderungen in beiden Fällen häufig die gleichen sind, unterscheiden sich die Kreiselpumpenaggregote in ihrem mechanischen Aufbau praktisch nicht. Es sind jedoch herstellungsseitig bei gleichen Anschlussdaten des Pumpengehäuses stets zwei Baureihen zu produzieren. Auch müssen hinsichtlich des Ersatzes stets für jede der vorgenannten Anwendungen unterschiedlich Kreiselpumpenaggregate bevorratet werden, was aufwändig und teuer ist.Since the hydraulic requirements in both cases are often the same, the centrifugal pump aggregates practically do not differ in their mechanical structure. However, there are always two production series to produce with the same connection data of the pump housing. Also have to be kept in terms of replacement always for each of the above applications different centrifugal pump units, which is complex and expensive.

Bei Heizungsumwälzpumpen größerer Bauart, wie sie beispielsweise in Gruppen von zwei bis acht Pumpen parallel verbaut werden, zählt es zum Stand der Technik (Grundfos-Pumpe Typ Magna UPE) diese einzelnen Heizungsumwälzpumpen, die jeweils eine interne elektronische Regelung aufweisen, von außen anzusteuern, wobei hierbei nicht die interne Regelung als solche beeinflusst wird, sondern lediglich die Sollwertvorgaben.With heating circulation pumps of larger design, as installed in parallel in groups of two to eight pumps, for example, it counts to the prior art (Grundfos pump type Magna UPE) to control these individual heating circulation pumps, each having an internal electronic control, from the outside, in which case not the internal control is influenced as such, but only the setpoint specifications.

Vor diesem Hintergrund liegt der Erfindung die Aufgabe zugrunde, ein gattungsgemäßes Kreiselpumpenaggregot so auszubilden, dass es sowohl in einer Heizungsanlage mit Betrieb der internen elektronischen Regelung als auch in einer Heiztherme mit externer Ansteuerung oder kombiniert Verwendung finden kann.Against this background, the invention has the object, a generic Kreiselpumpenaggregot in such a way that it can be used both in a heating system with operation of the internal electronic control and in a heating with external control or combined use.

Diese Aufgabe wird gemäß der Erfindung durch ein Kreiselpumpenaggregat mit den in Anspruch 1 angegebenen Merkmalen gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen, der nachfolgenden Beschreibung und der Zeichnung angegeben. Hierbei können gemäß der Erfindung die in den Unteransprüchen, der Beschreibung und der Zeichnung angegebenen Merkmale jeweils für sich aber auch in geeigneter Kombination die erfindungsgemäße Lösung gemäß Anspruch 1 weiter ausgestalten.This object is achieved according to the invention by a centrifugal pump unit having the features specified in claim 1. Advantageous embodiments of the invention are specified in the subclaims, the following description and the drawing. In this case, according to the invention, the features specified in the dependent claims, the description and the drawing in each case but also in a suitable combination, the inventive solution according to claim 1 further.

Das erfindungsgemäße Kreiselpumpenaggregat, insbesondere Heizungsumwälzpumpenaggregat, weist eine Kreiselpumpe auf, die von einem Elektromotor angetrieben wird. Das Aggregat weist ferner einen elektronischen Drehzahlsteller für den Motor und eine interne elektronische Regelung auf, bei welcher die Stellgröße die Drehzahl des Motors ist, wobei der Drehzahlsteller und die Regelung Teil des Aggregates bilden. Gemäß der Erfindung sind ein Signaleingang zur externen Ansteuerung des Motors vorgesehen und Mittel zum Umschalten von der internen elektronischen Regelung auf eine externe Drehzahlsteuerung oder zum Zuschalten einer externen Drehzahlsteuerung.The centrifugal pump unit according to the invention, in particular Heizungsumwälzpumpenaggregat, has a centrifugal pump, which is driven by an electric motor. The unit also has an electronic speed controller for the engine and an internal electronic control in which the manipulated variable is the speed of the motor, wherein the speed controller and the control form part of the unit. According to the invention, a signal input for the external control of the motor are provided and means for switching from the internal electronic control to an external speed control or for connecting an external speed control.

Grundgedanke der vorliegenden Erfindung ist es somit die vorbeschriebenen, aus dem Stand der Technik bekannten Pumpentypen zu vereinen, jedoch darüber hinaus auch Kombinationen hinsichtlich der Steuerung/Regelung vorzusehen, die in dieser Form bisher nicht möglich waren. Das erfindungsgemäße Kreiselpumpenaggregat kann in vorteilhafter Weise sowohl mit seiner internen elektronischen Regelung als auch mit einer externen Drehzahlsteuerung arbeiten sowie Kombinationen davon, beispielsweise indem das Aggregat mit der internen Regelung arbeitet und lediglich im Falle des Zuschaltens durch eine externe Drehzahlsteuerung gesteuert wird. Es ist also nicht zwingend erforderlich nur in dem einen oder dem anderen Modus zu fahren sondern es sind auch in vorteilhafter Weise Kombinationen möglich.The basic idea of the present invention is thus to unite the above-described types of pumps known from the prior art, but moreover also to provide combinations with regard to the control / regulation which were hitherto not possible in this form. The centrifugal pump assembly according to the invention can operate advantageously both with its internal electronic control and with an external speed control and combinations thereof, for example by the unit works with the internal control and is controlled only in the case of connection by an external speed control. It is therefore not absolutely necessary to drive only in one or the other mode but combinations are also possible in an advantageous manner.

Besonders vorteilhaft ist es, wenn der Signaleingang am Kreiselpumpenaggregat durch einen am Aggregatgehäuse angeordneten elektrischen Anschlussstecker gebildet ist. Anschlussstecker im Sinne der Erfindung kann sowohl ein männliches als auch ein weibliches Steckerteil sein. Ein solcher Signaleingang zählt derzeitig bei Heizungsumwälzpumpen zum Stand der Technik, wie sie in Heizthermen eingesetzt werden und mittels eines pulsweiten modulierten Signals drehzahlgesteuert sind. Gemäß der Erfindung kann ein solcher Signaleingang auch in anderer Form gebildet sein, beispielsweise durch einen elektrischen Filter, wenn das Signal über das Netzkabel aufmoduliert übertragen wird oder durch einen Infrarot, Bluetooth oder sonstigen Empfänger, wenn das Signal drahtlos übertragen werden soll.It is particularly advantageous if the signal input on the centrifugal pump assembly is formed by an electrical connection plug arranged on the unit housing. Connector according to the invention may be both a male and a female connector part. Such a signal input currently counts in heating circulation pumps to the prior art, as they are used in heating and are speed controlled by means of a pulse-width modulated signal. According to the invention, such a signal input can also be formed in another form, for example by an electrical filter, when the signal is transmitted modulated via the mains cable or by an infrared, Bluetooth or other receiver when the signal is to be transmitted wirelessly.

Dabei können die Mittel zum Umschalten der internen elektronischen Regelung auf eine externe Drehzahlsteuerung oder zum Zuschalten einer externen Drehzahlsteuerung so ausgebildet sein, dass diese vorzugsweise selbsttätig ermitteln, ob eine externe Steuerung angeschlossen ist oder nicht und bei Ermittlung einer angeschlossenen externen Steuerung auf die externe Steuerung ständig oder ggf. bedarfsweise umschalten. So kann beispielsweise durch eine geeignete elektronische Schaltung in Abständen ermittelt werden, ob der Signaleingang mit einer externen Steuerung verbunden ist oder nicht. Da auch die externe Steuerung typischerweise elektronisch arbeitet, kann entweder durch ein entsprechendes "hand shaking" oder aber durch geeignete Einmesszyklen dies ermittelt werden.In this case, the means for switching the internal electronic control to an external speed control or to connect an external speed control may be designed so that they preferably determine automatically whether an external control is connected or not and when determining a connected external control to the external control constantly or, if necessary, as needed switch. For example, it can be determined at intervals by means of a suitable electronic circuit whether the signal input is connected to an external controller or not. Since also the external control typically works electronically, this can be determined either by a corresponding "hand shaking" or by suitable calibration cycles.

Auch kann gemäß der Erfindung eine einfache Umschaltung mittels eines Schalters am Pumpenaggregat erfolgen, der beispielsweise durch einen Kontakt innerhalb des elektrischen Anschlusssteckers für den Signaleingang gebildet wird, der beim Einstecken des Gegensteckers geschlossen wird, durch einen Mikroschalter in diesem Bereich, durch einen Hallsensor oder dergleichen. Ein solcher Schalter ist insbesondere dann zweckmäßig, wenn eine Umschaltung von der internen elektronischen Regelung auf eine externe Drehzahlsteuerung erfolgen soll, also beispielsweise ein und dasselbe Pumpenaggregat als Ersatz für ein hinsichtlich der Drehzahl extern angesteuertes Kreiselpumpenaggregat in einer Heiztherme oder eine mit interner elektronischen Regelung arbeitende Heizungsumwälzpumpe in einer Heizungsanlage eingesetzt werden soll.Also, according to the invention, a simple switching by means of a switch on the pump unit done, which is formed for example by a contact within the electrical connector for the signal input, which is closed when inserting the mating connector, by a microswitch in this area, by a Hall sensor or the like , Such a switch is particularly useful when switching from the internal electronic control to an external speed control should be done, so for example one and the same pump unit as a replacement for externally driven in terms of speed centrifugal pump unit in a heating or working with internal electronic control heating circulation pump to be used in a heating system.

Vorzugsweise weist das Kreiselpumpenaggregat eine Regelung auf, die eine selbstlernende Sollwertanpassung hat, welche die Betriebspunkte der Pumpe selbsttätig an die Anforderungen der Anlage anpasst. Diese selbstlernende Sollwertanpassung kann vorteilhaft nicht nur beim Einbau der Pumpe als stand-alone-Lösung in einer Heizungsanlage Verwendung finden, sondern ggf. auch bei Verwendung in einer Heiztherme, bei der eine externe Drehzahlsteuerung vorgesehen ist. Es ist dann zweckmäßig, diese externe Drehzahlsteuerung nur zum Zuschalten vorzusehen, d. h. für vorbestimmte Betriebssituationen, bei denen beispielsweise eine große Wärmemenge schnell abgeführt werden soll oder aber in Notsituationen, die nur von der Kesselsteuerung aus erkennbar sind. Es kann dann also in besonders vorteilhafter Weise das erfindungsgemäße Kreiselpumpenaggregat auch bei Belegung des Signaleingangs zur externen Ansteuerung des Motors mit der internen Regelung mit der selbstlernenden Sollwertanpassung eingesetzt werden, wobei nur in diesen besonderen Notsituationen von der externen Steuerung ein vorrangiges Drehzahlsignal abgegeben wird.Preferably, the centrifugal pump unit has a control that has a self-learning setpoint adjustment, which automatically adapts the operating points of the pump to the requirements of the system. This self-learning setpoint adjustment can advantageously be used not only when installing the pump as a stand-alone solution in a heating system, but possibly also when used in a heating boiler, in which an external speed control is provided. It is then expedient to provide this external speed control only for connection, ie for predetermined operating situations in which, for example, a large amount of heat to be dissipated quickly or in emergency situations, only recognizable by the boiler control are. It can then be used in a particularly advantageous manner, the centrifugal pump assembly according to the invention even when occupying the signal input for external control of the motor with the internal control with the self-learning setpoint adjustment, only in these particular emergency situations of the external control, a priority speed signal is delivered.

Bevorzugt ist das erfindungsgemäße Kreiselpumpenaggregot dabei so ausgebildet, dass über die externe Steuerung nicht nur eine Drehzahlsteuerung erfolgen kann sondern, dass auch die selbstlernende Sollwertanpassung über die externe Steuerung aktivierbar und deaktivierbar ist. Auf diese Weise kann die vorteilhafte selbstlernende Sollwertanpassung, die in der internen Steuerelektronik des Kreiselpumpenaggregates vorgesehen ist, gezielt auch in Heizungsanlagen eingesetzt werden, die sonst nur über ihre eigene Steuerung ein Drehzahlsignal für das Kreiselpumpenaggregot abgeben. Es versteht sich, dass in diesem Falle die externe Steuerung entsprechend ausgebildet sein muss.Preferably, the centrifugal pump assembly according to the invention is designed so that not only a speed control can take place via the external control, but also that the self-learning setpoint adjustment via the external control can be activated and deactivated. In this way, the advantageous self-learning setpoint adjustment, which is provided in the internal control electronics of the centrifugal pump assembly, targeted to be used in heating systems that otherwise give only on their own control a speed signal for the Kreiselpumpenaggregot. It is understood that in this case the external control must be designed accordingly.

Weiter vorgesehen ist, dass externe Schaltmittel vorgesehen sind, mit denen die selbstlernende Sollwertanpassung der internen Regelung zurücksetzbar ist und/oder eine oder mehrere Regelkurven der internen Regelung wählbar oder veränderbar sind. Das Kreiselpumpenaggregot ist also steuerungstechnisch so angepasst, dass es nicht nur wie bei bekannten Heizungsumwälzpumpenaggregaten nach dem Stand der Technik, die eine selbstlernende Sollwertanpassung haben und zahlreiche Regelkurven bieten, nur durch manuelle Eingriffe von außen am Bedienpaneel des Pumpenaggregats steuerbar ist, sondern nunmehr auch durch externe Schaltmittel, also durch elektrische/elektronische Signale von außen steuerbar. Es kann also gemäß dieser Weiterbildung ein Reset der selbstlernenden Steuerung durch einen entsprechenden externen Befehl, beispielsweise von der elektronischen Steuerung der Heiztherme aus erfolgen, über welche auch die externe Steuerung erfolgt. Sehr vorteilhaft ist der Zugriff auf die in der internen Regelung vorgesehenen Regelkurven, damit kann über eine externe Steuerung ein Zugriff auf alle wesentlichen Steuer- und Regelfunktionen des Kreiselpumpenaggregats erfolgen.It is further provided that external switching means are provided, with which the self-learning setpoint adjustment of the internal control can be reset and / or one or more control curves of the internal control can be selected or changed. The Kreiselpumpenaggregot is so control technology adapted so that it not only as in known Heizungsumwälzpumpenaggregaten according to the prior art, which have a self-learning setpoint adjustment and numerous control curves offer only by manual intervention from the outside on the control panel of the pump unit is controllable, but now also by external Switching means, so controlled by electrical / electronic signals from the outside. It can therefore be done according to this development, a reset of the self-learning control by a corresponding external command, for example, from the electronic control of the heating from, via which also the external control. Very advantageous is the access to the control curves provided in the internal control, so that can be done via an external control access to all the essential control and regulation functions of the centrifugal pump unit.

Bevorzugt ist dabei insbesondere ein externer Schalter vorgesehen, mit dem die Sollwertanpassung der internen Steuerelektronik des Kreiselpumpenaggregates zurücksetzbar ist und/oder eine oder mehrere Regelkurven der internen Regelung veränderbar sind. Dieser Schalter ist mit räumlichem Abstand zum Pumpenaggregat angeordnet und zumindest signal-, vorzugsweise leitungsverbunden. Er kann vorzugsweise im Bedienpaneel der Heizungsanlage angeordnet sein, in welcher das Kreiselpumpenaggregat eingebaut ist.In this case, an external switch is preferably provided with which the setpoint adjustment of the internal control electronics of the centrifugal pump assembly can be reset and / or one or more control curves of the internal control can be changed. This switch is arranged at a distance from the pump unit and at least signal, preferably line connected. It may preferably be arranged in the control panel of the heating system, in which the centrifugal pump unit is installed.

Um die insbesondere vorerwähnten Steuermöglichkeiten ausnutzen zu können, ist gemäß einer vorteilhaften Weiterbildung der Erfindung vorgesehen, die elektrischen Leitungen, über welche die Drehzahl Steuersignale, typischerweise PWM-Signale (Pulsweitenmodulationssignale) übertragen werden, weitere Steuersignale zu übertragen, vorzugsweise durch Aufmodulation. Aggregatseitig sind dann Trennmittel vorgesehen, welche die Drehzahlsteuersignale von den übrigen Steuersignalen trennen und entsprechend weiter verarbeiten.In order to exploit the particular aforementioned control options, according to an advantageous embodiment of the invention, the electrical lines, via which the speed control signals, typically PWM signals (pulse width modulation signals) are transmitted to transmit further control signals, preferably by modulating. On the aggregate side separating means are then provided, which separate the speed control signals from the other control signals and further process accordingly.

Vorzugsweise ist das erfindungsgemäße Kreiselpumpenaggregat zur Versorgung eines Mehrheizkreissystems vorgesehen, wie dies bei Heizungsumwälzpumpen für Thermen typischerweise der Fall ist, bei denen ein Heizkreis für die Raumheizung und ein Heizkreis für die Brauchwassererwärmung vorgesehen ist. Für diesen Anwendungszweck ist es vorteilhaft, wenn das Kreiselpumpenaggregat Mittel zum Erkennen des umzuwälzenden Heizkreises aufweist, um vorzugsweise selbsttätig zu erkennen, welche der Heizkreise bedient werden muss und entsprechend umzusteuern. Diese Erkennung kann beispielsweise über den Druckverlauf an der Pumpe erfolgen, wenn nämlich während des Umschaltvorgangs von einem zum anderen Heizkreis kurzzeitig beide Heizkreise geöffnet sind und somit ein Druckabfall detektierbar ist.Preferably, the centrifugal pump unit according to the invention is provided for supplying a Mehrheizkreissystems, as is typically the case with heating circulation pumps for spas in which a heating circuit for space heating and a heating circuit for domestic water heating is provided. For this application, it is advantageous if the centrifugal pump unit has means for detecting the circulating heating circuit, preferably to detect automatically which of the heating circuits must be operated and redirect accordingly. This recognition can be done via the Pressure course take place at the pump, namely, during the switching from one to the other heating circuit briefly both heating circuits are open and thus a pressure drop can be detected.

Vorteilhaft sind im Kreiselpumpenaggregot gemäß einer Weiterbildung der Erfindung in der internen Regelung mehrere Profile/Regelkurven abgespeichert, die entweder über Schalter an der Außenseite des Aggregates manuell oder ggf. auch über eine Fernbedienung, ein Smartphone oder dergleichen drahtlos angesteuert werden können oder aber über Steuermittel wählbar sind, die typischerweise kesselsteuerseitig vorgesehen sind.According to an embodiment of the invention, several profiles / control curves are advantageously stored in the centrifugal pump unit, which can be controlled either manually via switches on the outside of the unit or possibly wirelessly via a remote control, a smartphone or the like, or can be selected via control means are that are typically provided boiler control side.

Die Erfindung ist nachfolgend anhand eines Ausführungsbeispiels näher erläutert. Es zeigen:

Fig. 1
ein Heizungsumwälzpumpenaggregat in Explosionsdarstellung und
Fig. 2
ein Blockdiagramm des Aggregats nach Fig. 1.
The invention is explained in more detail with reference to an embodiment. Show it:
Fig. 1
a Heizungsumwälzpumpenaggregat in exploded view and
Fig. 2
a block diagram of the unit after Fig. 1 ,

Bei dem anhand von Fig. 1 dargestellten Pumpenaggregat handelt es sich um ein solches, welches sowohl als stand-alone-Aggregat in einer Heizungsanlage eingesetzt werden kann als auch als drehzahlgesteuertes Aggregat in einer Heiztherme, bei welcher die Drehzahlsteuerung mittels der thermeneigenen Steuerung, also extern erfolgt.In the case of Fig. 1 Pump unit shown is such that can be used both as a stand-alone unit in a heating system and as a speed-controlled unit in a heating boiler, in which the speed control by means of the thermal management, ie externally.

Das Aggregat besteht aus einer Kreiselpumpe 1, deren Pumpengehäuse 2 hier beispielhaft als Inlinegehäuse ausgebildet ist und einen Sauganschluss 3 und einen Druckanschluss 4 aufweist. Es versteht sich, dass hier grundsätzlich auch jede andere geeignete Gehäuseform Verwendung finden kann. Innerhalb des Pumpengehäuses 2 ist ein Kreiselrad 5 drehbar angeordnet, welches auf einer Welle 6 sitzt, die von einem Elektromotor 7 angetrieben wird, der in einem Motorgehäuse 8 sitzt, welches mit dem Pumpengehäuse 2 verschraubt ist.The unit consists of a centrifugal pump 1, the pump housing 2 is here exemplified as an inline housing and a suction port 3 and a pressure port 4 has. It is understood that in principle any other suitable housing form can be used here. Within the pump housing 2, a gyro 5 is rotatably mounted, which sits on a shaft 6, which is a Electric motor 7 is driven, which sits in a motor housing 8, which is bolted to the pump housing 2.

An der vom Pumpengehäuse 2 abgewandten Seite des Motorgehäuses 8 ist ein Klemmenkasten 9 angebracht, der das Motorgehäuse 8 übergreift und gleichzeitig auch ein Elektronikgehäuse für die dort angeordnete Elektronik bildet. Die Forderseite des Klemmenkastens 9 bildet ein Bedienpaneel 10 des Pumpenaggregats. Innerhalb des Klemmenkastens 9 erfolgt nicht nur die Konnektierung zu den Motorwicklungen, dort ist auch ein elektronischer Drehzahlsteller in Form eines Frequenzumrichters 11 vorgesehen sowie Steuer- und Regelelektronik 12.At the side facing away from the pump housing 2 side of the motor housing 8, a terminal box 9 is attached, which engages over the motor housing 8 and at the same time forms an electronics housing for the electronics arranged there. The front side of the terminal box 9 forms an operating panel 10 of the pump unit. Within the terminal box 9 is not only the Konnektierung to the motor windings, there is also an electronic speed controller in the form of a frequency converter 11 is provided and control electronics 12th

Am Klemmenkasten 9 ist ein Stecker 13 angeordnet, der zur Verbindung mit einem Netzkabel dient, mit dem das Pumpenaggregat an einem örtlichen Wechselstromnetz anschließbar ist, worüber die elektrische Versorgung des Motors sowie der gesamten Elektronik erfolgt. Oberhalb des Netzsteckers 13 ist ein weiterer Stecker 14 angeordnet, der zum Anschluss einer externen Steuerung, z. B. einer Kesselsteuerung einer Heiztherme dient und mit dem zumindest ein PWM-Signal zur unmittelbaren Drehzahlsteuerung über die externe Steuerung übermittelbar ist.On the terminal box 9, a plug 13 is arranged, which serves for connection to a power cord, with which the pump unit can be connected to a local AC power supply, via which the electrical supply of the motor and the entire electronics. Above the power plug 13, a further connector 14 is arranged, which is for connecting an external controller, for. B. a boiler control of a heating is used and with the at least one PWM signal for direct speed control via the external control is transmitted.

Wenn die Heizungsumwälzpumpe als stand-alone-Pumpe in einer Heizungsanlage eingebaut ist, wird dieser Stecker 18 für eine externe Steuerung nicht benötigt, er ist dann durch einen Blindstopfen 15 verschließbar. Das Aggregat ist dann als Heizungsumwälzpumpenaggregat einsetzbar, wobei es eine interne elektronische Regelung 16 aufweist, über welche eine Vielzahl von Regelkurven vorgebbar sind. Darüber hinaus ist in der internen Steuerung eine selbstlernende Sollwertanpassung vorgesehen. Über einen Taster 17 können verschiedene Betriebmodi/Regelkurven/Profile von außen an dem Bedienpaneel des Klemmenkastens 9 eingestellt werden. Über eine Anzeige 18, die hier in Form von fünf Leuchtdioden ausgebildet ist, kann die jeweilige Einstellung abgelesen werden. Alternativ kann hier auch ein Display vorgesehen sein, welches alphanumerisch darstellt. Die Ausbildung des Aggregates entspricht insoweit der vom Grundfos-Konzern unter der Typenbezeichnung Alpha II vertriebenen Hocheffizienzpumpe.If the heating circulation pump is installed as a stand-alone pump in a heating system, this plug 18 is not required for external control, it is then closed by a blind plug 15. The unit can then be used as Heizungsumwälzpumpenaggregat, where it has an internal electronic control 16, via which a plurality of control curves can be specified. In addition, a self-learning setpoint adjustment is provided in the internal control. Via a button 17 different operating modes / control curves / profiles can be adjusted from the outside to the control panel of the terminal box 9. About a display 18, which is designed here in the form of five LEDs, the respective setting be read. Alternatively, a display can also be provided here which represents alphanumerically. The formation of the aggregate corresponds in this respect to the Grundfos Group under the type designation Alpha II distributed high efficiency pump.

Zum Betrieb in einer Anlage mit externer Drehzahlsteuerung ist der Stecker 14 zu kontaktieren. Dabei ist die Steuer- und Regelelektronik so ausgelegt, dass sie selbsttätig erfasst, ob

  1. a) der Stecker 14 durch einen Gegenstecker 19 kontaktiert ist, hierzu ist ein Mikroschalter innerhalb des Steckers 14 vorgesehen, der dies erfasst - und
  2. b) ob über den Gegenstecker 19 eine externe Steuerung angeschlossen ist, dies wird elektronisch ermittelt.
For operation in a system with external speed control of the connector 14 is to contact. The control electronics is designed so that it automatically detects whether
  1. a) the plug 14 is contacted by a mating connector 19, this is a micro switch within the plug 14 is provided, which detects this - and
  2. b) whether an external control is connected via the mating connector 19, this is determined electronically.

Sobald dies erfasst ist, wird die Steuer- und Regelelektronik 12 mittels eines elektronischen Schalters 20 so geschaltet, dass dann, wenn ein PWM-Signal an dem durch den Stecker 14 gebildeten Eingang anliegt, über den Frequenzumrichter 11 ein entsprechendes Drehzahlsignal für den Motor 7 erzeugt wird. Die Steuer- und Regelelektronik 12 schaltet also dann auf den externen Eingang um, die interne Regelung kann dann ganz oder teilweise abgeschaltet sein. Bezugszeichenliste 1 Kreiselpumpe 2 Pumpengehäuse 3 Sauganschluss 4 Druckanschluss 5 Kreiselrad 6 Welle 7 Motor 8 Motorgehäuse 9 Klemmenkasten 10 Bedienpaneel 11 Fequenzumrichter 12 Steuer- und Regelelektronik 13 Netzstecker 14 Stecker 15 Blindstopfen 16 Interne Regelung 17 Taster 18 Anzeige 19 Gegenstecker 20 Schalter Once this is detected, the control electronics 12 is switched by means of an electronic switch 20 so that when a PWM signal is applied to the input formed by the plug 14, via the frequency converter 11 generates a corresponding speed signal for the motor 7 becomes. The control electronics 12 then switches to the external input, the internal control can then be completely or partially turned off. LIST OF REFERENCE NUMBERS 1 rotary pump 2 pump housing 3 suction 4 pressure connection 5 impeller 6 wave 7 engine 8th motor housing 9 terminal box 10 control panel 11 frequency converter in 12 Control electronics 13 power plug 14 plug 15 blind plug 16 Internal regulation 17 button 18 display 19 Mating connector 20 switch

Claims (12)

Kreiselpumpenaggregat, insbesondere Heizungsumwälzpumpenaggregat, mit einer Kreiselpumpe (1), mit einem die Pumpe (1) antreibenden Elektromotor (7), mit einem elektronischen Drehzahlsteller (11) für den Motor (7) und mit einer internen elektronischen Regelung (16), bei welcher die Stellgröße die Drehzahl des Motors ist, wobei der Drehzahlsteller (11) und die Regelung (16) Teil des Aggregates bilden, dadurch gekennzeichnet, dass ein Signaleingang zur externen Ansteuerung des Motors (7) vorgesehen ist und dass Mittel (20) zum Um- schalten von der internen elektronischen Regelung (16) auf eine externe Drehzahlsteuerung oder zum Zuschalten einer externen Drehzahlsteuerung vorgesehen sind.Centrifugal pump unit, in particular heating circulation pump unit, with a centrifugal pump (1), with an electric motor (7) driving the pump (1), with an electronic speed control (11) for the motor (7) and with an internal electronic control (16), in which the manipulated variable is the speed of the motor, wherein the speed controller (11) and the controller (16) form part of the unit, characterized in that a signal input for the external control of the motor (7) is provided and that means (20) for Um- switch from the internal electronic control (16) to an external speed control or to connect an external speed control are provided. Kreiselpumpenaggregat nach Anspruch 1, dadurch gekennzeichnet, dass der Signaleingang durch einen am Aggregatgehäuse (2, 8, 9) angeordneten elektrischen Anschlussstecker (14) gebildet ist.Centrifugal pump assembly according to claim 1, characterized in that the signal input is formed by a on the unit housing (2, 8, 9) arranged electrical connector (14). Kreiselpumpenaggregat nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Mittel (20) zum Umschalten elektronische Mittel sind, welche ermitteln, ob eine externe Steuerung angeschlossen ist oder nicht und bei Ermittlung einer angeschlossenen externen Steuerung auf die externe Steuerung umschalten.Centrifugal pump assembly according to claim 1 or 2, characterized in that the switching means (20) are electronic means which determine whether an external control is connected or not and switch over to the external control upon detection of a connected external control. Kreiselpumpenaggregat nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Mittel zum Umschalten einen Schalter am Pumpenaggregat aufweisen.Centrifugal pump unit according to one of the preceding claims, characterized in that the means for switching comprise a switch on the pump unit. Kreiselpumpenaggregot nach einem der vorhergehenden Ansprüche 2 bis 4, dadurch gekennzeichnet, dass die Mittel zum Umschalten einen Sensor oder Mikroschalter aufweisen, der eine Konnektierung des elektrischen Anschlusssteckers (14) des Signaleingangs erfasst.Centrifugal pump unit according to one of the preceding claims 2 to 4, characterized in that the means for switching comprise a sensor or micro-switch, which detects a Konnektierung the electrical connector plug (14) of the signal input. Kreiselpumpenaggregot nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Regelung (16) eine selbstlernende Sollwertanpassung aufweist, welche die Betriebspunkte der Pumpe selbsttätig an die Anlage anpasst.Centrifugal pump unit according to one of the preceding claims, characterized in that the control (16) has a self-learning setpoint adjustment, which automatically adapts the operating points of the pump to the system. Kreiselpumpenaggregat nach Anspruch 6, dadurch gekennzeichnet, dass über die externe Steuerung die selbstlernende Sollwertanpassung aktivierbar und deaktivierbar ist.Centrifugal pump assembly according to claim 6, characterized in that on the external control, the self-learning setpoint adjustment is activated and deactivated. Kreiselpumpenaggregat nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass externe Schaltmittel vorgesehen sind, mit denen die selbstlernende Sollwertanpassung der internen Regelung (16) zurücksetzbar ist und/oder eine oder mehrere Regelkurven der internen Regelung (16) veränderbar sind.Centrifugal pump assembly according to claim 6 or 7, characterized in that external switching means are provided, with which the self-learning setpoint adjustment of the internal control (16) can be reset and / or one or more control curves of the internal control (16) are variable. Kreiselpumpenaggregat nach Anspruch8, dadurch gekennzeichnet, dass ein externer Schalter vorgesehen ist, der mit räumlichem Abstand zum Pumpenaggregat angeordnet ist, vorzugsweise in einem Bedienpanel einer Heizungsanlage, in welcher das Kreiselpumpenaggregat eingebaut ist.Centrifugal pump unit according to claim 8, characterized in that an external switch is provided which is arranged at a distance from the pump unit, preferably in a control panel of a heating system in which the centrifugal pump unit is installed. Kreiselpumpenaggregat nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass über die elektrische Leitung, welche die Drehzahlsteuersignale, vorzugsweise PWM-Signale überträgt weitere Steuersignale übertragen vorzugsweise moduliert werden, wobei aggregatseitig Trennmittel vorgesehen sind, welche die Drehzahlsteuersignale von den übrigen Steuersignalen trennen.Centrifugal pump unit according to one of the preceding claims, characterized in that via the electrical line which transmits the speed control signals, preferably PWM signals transmits further control signals preferably be modulated, the aggregate side separating means are provided which separate the speed control signals from the other control signals. Kreiselpumpenaggregat nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Pumpenaggregat zur Versorgung eines Mehrheizkreissystems vorgesehen ist und dass Mittel zur Erkennung des umzuwälzenden Heizkreises vorgesehen sind.A centrifugal pump assembly according to one of the preceding claims, characterized in that the pump unit is provided for supplying a Mehrheizkreissystems and in that means for detecting the heating circuit to be circulated are provided. Kreiselpumpenaggregat nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass in der internen Regelung (16) mehre Profile/Regelkurven abgespeichert sind, die über Schalter/Steuermittel wählbar sind.Centrifugal pump unit according to one of the preceding claims, characterized in that in the internal control (16) several profiles / control curves are stored, which can be selected via switch / control means.
EP13158591.1A 2013-03-11 2013-03-11 Centrifugal pump assembly Active EP2778423B1 (en)

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TR2018/06831T TR201806831T4 (en) 2013-03-11 2013-03-11 Centrifugal pump equipment.
PL13158591T PL2778423T3 (en) 2013-03-11 2013-03-11 Centrifugal pump assembly
EP13158591.1A EP2778423B1 (en) 2013-03-11 2013-03-11 Centrifugal pump assembly
CN201480013981.1A CN105121857B (en) 2013-03-11 2014-02-24 Heating cycle pump assembly
PCT/EP2014/053515 WO2014139784A1 (en) 2013-03-11 2014-02-24 Centrifugal pump assembly

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EP2778423B1 EP2778423B1 (en) 2018-02-28

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016087056A1 (en) * 2014-12-03 2016-06-09 Grundfos Holding A/S An electronic converter unit for retrofitting to an external part of a housing of a pump unit
CN114562463A (en) * 2022-03-08 2022-05-31 四川省机械研究设计院(集团)有限公司 Electromagnetic speed-regulating multi-switching control centrifugal pump
EP4015827A1 (en) 2020-12-16 2022-06-22 Grundfos Holding A/S Pump assembly and method for controlling an electric motor for driving an impeller of a pump unit of a pump assembly

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Publication number Priority date Publication date Assignee Title
EP0403806A1 (en) * 1989-06-21 1990-12-27 WILO GmbH Centrifugal pump or fan
EP0735273A1 (en) * 1995-03-28 1996-10-02 WILO GmbH Twin pump with main control system
EP0866228A2 (en) * 1997-03-18 1998-09-23 Grundfos A/S Pump unit
US6717383B1 (en) * 2000-08-30 2004-04-06 Chris S. Brunt Fountain control for generating dynamically changing flow patterns
EP1426699A1 (en) * 2002-12-02 2004-06-09 Christian Dr. Holter Circulation pumps automatic control system
EP1614903A1 (en) * 2004-07-07 2006-01-11 Grundfos A/S Driving unit for a centrifugal pump

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0403806A1 (en) * 1989-06-21 1990-12-27 WILO GmbH Centrifugal pump or fan
EP0735273A1 (en) * 1995-03-28 1996-10-02 WILO GmbH Twin pump with main control system
EP0866228A2 (en) * 1997-03-18 1998-09-23 Grundfos A/S Pump unit
US6717383B1 (en) * 2000-08-30 2004-04-06 Chris S. Brunt Fountain control for generating dynamically changing flow patterns
EP1426699A1 (en) * 2002-12-02 2004-06-09 Christian Dr. Holter Circulation pumps automatic control system
EP1614903A1 (en) * 2004-07-07 2006-01-11 Grundfos A/S Driving unit for a centrifugal pump

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016087056A1 (en) * 2014-12-03 2016-06-09 Grundfos Holding A/S An electronic converter unit for retrofitting to an external part of a housing of a pump unit
WO2016086986A1 (en) * 2014-12-03 2016-06-09 Grundfos Holding A/S An electronic converter unit for retrofitting to an external part of a housing of a pump unit
CN107002693A (en) * 2014-12-03 2017-08-01 格兰富控股联合股份公司 A kind of electronic converter unit for the hull outside for being retrofitted to pump unit
US10132508B2 (en) 2014-12-03 2018-11-20 Grundfos Holding A/S Electronic converter unit for a pump and a method for communicating with the electronic converter unit
US10697649B2 (en) 2014-12-03 2020-06-30 Grundfos Holding A/S Electronic converter unit for retrofitting to an external part of a housing of a pump unit
US11365891B2 (en) 2014-12-03 2022-06-21 Grundfos Holding A/S Method and system for balancing a heating system
EP4015827A1 (en) 2020-12-16 2022-06-22 Grundfos Holding A/S Pump assembly and method for controlling an electric motor for driving an impeller of a pump unit of a pump assembly
US11933308B2 (en) 2020-12-16 2024-03-19 Grundfos Holding A/S Pump assembly and method for controlling an electric motor for driving an impeller of a pump unit of a pump assembly
CN114562463A (en) * 2022-03-08 2022-05-31 四川省机械研究设计院(集团)有限公司 Electromagnetic speed-regulating multi-switching control centrifugal pump

Also Published As

Publication number Publication date
PL2778423T3 (en) 2018-07-31
TR201806831T4 (en) 2018-06-21
EP2778423B1 (en) 2018-02-28
CN105121857A (en) 2015-12-02
WO2014139784A1 (en) 2014-09-18
CN105121857B (en) 2018-04-03

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