EP0735273A1 - Twin pump with main control system - Google Patents
Twin pump with main control system Download PDFInfo
- Publication number
- EP0735273A1 EP0735273A1 EP96104669A EP96104669A EP0735273A1 EP 0735273 A1 EP0735273 A1 EP 0735273A1 EP 96104669 A EP96104669 A EP 96104669A EP 96104669 A EP96104669 A EP 96104669A EP 0735273 A1 EP0735273 A1 EP 0735273A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- control
- pump according
- level control
- double
- 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
Links
Images
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
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
- F04D15/029—Stopping of pumps, or operating valves, on occurrence of unwanted conditions for pumps operating in parallel
-
- 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
- F04D13/00—Pumping installations or systems
- F04D13/12—Combinations of two or more pumps
- F04D13/14—Combinations of two or more pumps the pumps being all of centrifugal type
-
- 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 double pump with two impellers arranged in a housing, which convey a conveying medium, each impeller being driven by an electric motor, and by means of a higher-level control and / or regulation, the speeds of the two electric motors each independently of one another between the motor standstill and the nominal speed can be set or regulated.
- double pumps are preferred today.
- Two impellers are arranged in one housing, each impeller being driven by an electric motor.
- the electric motors usually have 3-4 speed levels that can be set by means of a control. If the flow rate changes, different delivery levels result.
- Pump systems are also known in which a delivery head can be predetermined and a regulation by switching over to the individual speed stages ensures the delivery head in a certain range. However, relative pressure fluctuations disadvantageously occur here.
- individual pumps are known, in which the speed by means of a Regulation is continuously changeable.
- the electronics of the control can usually be connected to a pump control computer via a digital interface.
- the master computer specifies the required speeds for the motors.
- the pump control computer can also specify which electric motor should drive the respective pump at what speed at a specific time. In multi-pump systems, for example, a load-dependent connection and disconnection of another pump can be carried out if the setpoint deviates.
- a double pump which has a superordinate pump control for a double pump.
- the speed of both motors of the double pump is regulated continuously, ie without speed jumps according to need
- the higher-level control system is fastened together with other switching devices centrally on a wall in the room.
- the object of the invention is therefore to provide a double pump which avoids the disadvantages of the prior art listed above, as a result of which the double pump is easier, cheaper and faster to install.
- This object is achieved in that the higher-level control and / or regulation is arranged directly on one of the two electric motors. This eliminates the otherwise necessary cables or transmission facilities for the Control data, which not only reduces installation costs, but also the space required for the pump and control.
- each of the two electric motors has a control, the respective control regulating the motor speed of the associated electric motor in accordance with the command variable specified by the higher-level control and / or regulation, and the controls being designed as modules, each based on the associated one Electric motor are in particular releasably attachable and are in electrical connection with the respective electric motor by means of electrical contacts.
- the controls are arranged in a housing. This housing is in particular releasably attachable to one of the electric motors and is in electrical connection with the two electric motors by means of electrical contacts. This eliminates the need for a housing, which in turn reduces production costs.
- the speed of the second pump can be increased continuously from standstill to the required speed, thereby avoiding pressure jumps.
- the command variable is advantageously the delivery head or pressure difference between the suction and outlet side of the respective pump.
- the pressure difference can be determined using a conventional pressure meter.
- each electric motor is preferably determined by the respective associated control, the actual delivery head or pressure difference between the intake and outlet side of the respective pump being able to be determined from the pump and motor characteristic curve from the current consumption of the motor, and the pressure difference determined being the actual value for the respective regulation.
- the control values can be given different reference values, which means that any delivery head or pressure difference can be adjusted.
- the pump is advantageously operated in double operation, with the higher-level control unit switching on both pumps at the same time in order to achieve a desired delivery head, and both controls specifying the same values for the reference variable, in such a way that both pumps deliver at the same speed.
- Both pumps advantageously have the same pump characteristics, which means that both pumps run at the same speed in the same operating points. As a result, both pumps are operated with the same operating times, which means that both pumps can wear evenly.
- the maintenance interval is then the same for both pumps, whereby maintenance can be carried out for both pumps at the same time.
- both pumps deliver at the same speed, the speeds of the two pumps are lower than the speed of a single pump with the same delivery head to be provided.
- the pump running noises are significantly lower.
- the pump runs quieter and quieter.
- Another advantage of this method is that no switching or switching is necessary, which advantageously avoids pressure and volume flow jumps.
- the controls are modules, each of which can in particular be releasably attached to the associated electric motor and are in electrical connection with the electric motor by means of electrical contacts. It is also advantageous if the controls are arranged in a housing and the housing is in particular releasably attached as a module to an electric motor.
- the higher-level control system should also be designed as a module, the module should in particular be releasably attachable to a control module.
- the control module is in electrical connection with the control module by means of electrical contacts. It is also advantageous if the higher-level control system is arranged in a housing together with the two controls and the housing can be detachably attached as a module to an electric motor.
- the higher-level control is arranged in a housing together with only one regulation of an electric motor, the housing as a module on this electric motor being particularly releasably attachable and the control of the other electric motor as a module on the other electric motor being releasably attachable is.
- Such a modular design allows various user-specific controls and / or regulations to be easily and quickly attached to the double pump, which means that additional cables are unnecessary and high operational reliability of the pump can be achieved.
- the higher-level control system can advantageously be connected to a pump control computer by means of data and / or control lines or to one or more other higher-level control systems or controls of single or double pumps. This has the advantage that several double pumps can be controlled by means of a higher-level controller.
- the higher-level controller can also be programmable. It can also have a programmable timer, by means of which the pumps can be switched on or off at predefinable time intervals, or their speeds or the level of the delivery head can be preset.
- the higher-level control system can switch on the pumps alternately in chronological order, such that, apart from the switch-on phase, only one pump ever conveys the pumped medium. In this way, it can advantageously be achieved that both pumps are operated with the same operating times, so that the maintenance intervals for the pumps can be set the same.
- the higher-level control system can also increase the speed of the other pump or switch off the defective pump, while the other pump takes over the work of the defective pump completely in order to keep the head constant or the pressure drop between the pump suction and Compensate the pump outlet side.
- Such redundancy increases the functional reliability of the system, which advantageously keeps operating and maintenance costs low.
- FIG. 1 shows a double pump with a housing 1, which has a pump suction side 2b and a pump outlet side 2a.
- Two pump impellers are arranged in the housing 1 and are each driven by the electric motors 3a, 3b.
- Regulations 5 are attached to the motor housing as modules by means of screw or snap connections.
- the higher-level control module 4 is fastened on one control module 5, which in turn is fastened on the control module 5 by means of a snap or screw connection.
- the higher-level control module 4 has display elements 4a and an input keyboard 4b for setting certain programs or pump circuits.
- the higher-level control module 4 is connected to the control module of the second electric motor 3b by means of a transmission cable 6 and controls it via the cable 6.
- FIG. 2 shows a side view of the double pump.
- FIG 3 shows a possible block diagram of a double pump.
- the higher-level controller 4 has a CPU, which has a memory, an input option for programming, a display of the program sequence, and the operating states, and a data bus, via which it is connected to the downstream Regulations or as shown in Figure 4 communicates with other pumps or controls them.
- the actual control is arranged autonomously in the control modules 5 and regulates the engine speed in accordance with the specified target value.
- the current consumption of the motor is determined by the control and, based on the known pump and motor characteristic curve, the pressure difference p 2 -p 1 currently generated by the pump between the intake port 2b and the outlet port 2a is calculated.
- the calculated actual value of the pressure difference of the pump is compared with the target value of the delivery head (reference variable) specified by the higher-level control. If the two values deviate, the control tries to adjust the motor speed of the pump accordingly.
- Each controller 5 is connected to the higher-level controller 4 via an additional communication interface.
- the controls 5 exchange data with the higher-level control by means of the communication interface.
- the control unit 5 can report to the higher-level control unit 4 that the respective pump or motor (3a, 3b) is defective.
- the higher-level controller 4 can also switch the pump into certain operating modes. Possible operating modes are e.g. Standstill, maximum speed or control operation of the pump. So it is possible that one pump delivers at maximum speed and the other pump is operated in normal operation. Another mode of operation is the synchronization of the two pumps, such that both pumps are operated at the same speed. It is also possible that only one pump is in operation and the other is stopped.
- a pump If a pump is defective, it will alarm the higher-level control 4 via the communication interface, whereupon the higher-level control 4 switches the pumps differently in accordance with the stored program or calculates new target values.
- FIG. 5 shows a double pump, in which the controls for the two pumps are arranged in a housing together with the higher-level control and the housing is fastened on an electric motor 3.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
Description
Die Erfindung betrifft eine Doppelpumpe mit zwei in einem Gehäuse angeordneten Laufrädern, die ein Fördermedium fördern, wobei jedes Laufrad von je einem Elektromotor angetrieben ist, und mittels einer übergeordneten Steuerung und/oder Regelung die Drehzahlen der beiden Elektromotoren jeweils unabhängig voneinander beliebig zwischen dem Motorstillstand und der Nenndrehzahl einstell- oder regelbar sind.The invention relates to a double pump with two impellers arranged in a housing, which convey a conveying medium, each impeller being driven by an electric motor, and by means of a higher-level control and / or regulation, the speeds of the two electric motors each independently of one another between the motor standstill and the nominal speed can be set or regulated.
Um große Fördermengen zu fördern bei gleichzeitigem Einsatz von kleineren Elektromotoren und Pumpen oder um eine Redundanz im Förderkreislauf zu schaffen, werden heute bevorzugt Doppelpumpen eingesetzt. Dabei werden zwei Laufräder in einem Gehäuse angeordnet, wobei jedes Laufrad von einem Elektromotor angetrieben ist. Die Elektromotoren besitzen meist 3-4 Drehzahlstufen, die mittels einer Steuerung einstellbar sind. Bei einer Änderung des Förderstroms ergeben sich somit unterschiedliche Förderhöhen. Auch sind Pumpensystems bekannt, bei denen eine Förderhöhe vorgebbar ist und eine Regelung durch Umschalten in die einzelnen Drehzahlstufen die Förderhöhe in einem gewissen Bereich gewährleistet. Hierbei treten jedoch nachteilig relative Druckschwankungen auf. Ferner sind Einzelpumpen bekannt, bei denen die Drehzahl mittels einer Regelung kontinuierlich veränderbar ist. Die Elektronik der Steuerung kann dabei meist über eine digitale Schnittstelle mit einem Pumpenleitrechner in Verbindung sein. Der Leitrechner gibt dabei die erforderlichen Drehzahlen den Motoren vor. Auch kann der Pumpenleitrechner vorgeben, welcher Elektromotor mit welcher Drehzahl zu einer bestimmten Zeit die jeweilige Pumpe antreiben soll. So kann z.B. bei Mehrpumpenanlagen bei Abweichung des eingestellten Sollwerts eine lastabhängige Zu- und Abschaltung einer weiteren Pumpe vorgenommen werden.In order to deliver large quantities with the simultaneous use of smaller electric motors and pumps or to create redundancy in the delivery circuit, double pumps are preferred today. Two impellers are arranged in one housing, each impeller being driven by an electric motor. The electric motors usually have 3-4 speed levels that can be set by means of a control. If the flow rate changes, different delivery levels result. Pump systems are also known in which a delivery head can be predetermined and a regulation by switching over to the individual speed stages ensures the delivery head in a certain range. However, relative pressure fluctuations disadvantageously occur here. Furthermore, individual pumps are known, in which the speed by means of a Regulation is continuously changeable. The electronics of the control can usually be connected to a pump control computer via a digital interface. The master computer specifies the required speeds for the motors. The pump control computer can also specify which electric motor should drive the respective pump at what speed at a specific time. In multi-pump systems, for example, a load-dependent connection and disconnection of another pump can be carried out if the setpoint deviates.
Aus dem von Reinhold Döring in der Haustechnische Rundschau 7/1988, S.230-235 veröffentlichten Artikel Regelung von Pumpen und Ventilatoren in der Versorgungstechnik Teil 2 und Schluß" ist eine Doppelpumpe bekannt, die über eine übergeordnete Pumpensteuerung für eine Doppelpumpe verfügt. Mittels der übergeordneten Pumpensteuerung wird die Drehzahl beider Motoren der Doppelpumpe kontinuierlich, d.h. ohne Drehzahlsprünge dem Bedarf entsprechend eingeregelt. Die übergeordnete Steuerung wird dabei zusammen mit anderen Schaltmitteln zentral in Raum an einer Wand befestigt.From the article published by Reinhold Döring in Haustechnische Rundschau 7/1988, pp. 230-235 Control of pumps and fans in the supply engineering part 2 and conclusion "a double pump is known which has a superordinate pump control for a double pump. By means of the superordinate pump control, the speed of both motors of the double pump is regulated continuously, ie without speed jumps according to need The higher-level control system is fastened together with other switching devices centrally on a wall in the room.
Durch eine derartige Anordnung der übergeordneten Pumpensteuerung ergeben sich jedoch lange Wege zwischen der Steuerung und der Pumpe selbst, die mittels geeigneter elektrischer Kabel überbrückt werden müssen. Derartige Kabel sind nicht nur teuer, sondern es entstehen zusätzliche Kosten für die Installation der Kabel.Such an arrangement of the higher-level pump control, however, results in long distances between the control and the pump itself, which must be bridged using suitable electrical cables. Such cables are not only expensive, but there are additional costs for installing the cables.
Aufgabe der Erfindung ist es daher, eine Doppelpumpe bereitzustellen, die oben aufgeführten Nachteile des Standes der Technik umgeht, wodurch die Doppelpumpe leichter, billiger und schneller zu Installieren ist.The object of the invention is therefore to provide a double pump which avoids the disadvantages of the prior art listed above, as a result of which the double pump is easier, cheaper and faster to install.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die übergeordnete Steuerung und/oder Regelung an einem der beiden Elektromotoren direkt angeordnet ist. Hierdurch entfallen die sonst notwendigen Kabel oder Übermittlungseinrichtungen für die Steuerdaten, wodurch nicht nur die Installationskosten, sondern auch der Platzbedarf für Pumpe und Steuerung sinken.This object is achieved in that the higher-level control and / or regulation is arranged directly on one of the two electric motors. This eliminates the otherwise necessary cables or transmission facilities for the Control data, which not only reduces installation costs, but also the space required for the pump and control.
Es ist ebenfalls von Vorteil, wenn jeder der beiden Elektromotoren eine Regelung hat, wobei die jeweilige Regelung die Motordrehzahl des zugehörigen Elektromotors entsprechend der von der übergeordneten Steuerung und/oder Regelung vorgegebenen Führungsgröße einregelt und die Regelungen als Module ausgebildet sind, die jeweils auf dem zugehörigen Elektromotor insbesondere lösbar befestigbar sind und mittels elektrischer Kontakte mit dem jeweiligen Elektromotor in elektrischer Verbindung sind. Dabei sind in einer besonders bevorzugten Ausführungsform die Regelungen in einem Gehäuse angeordnet sind. Dieses Gehäuse ist auf einem der Elektromotoren insbesondere lösbar befestigbar ist und mittels elektrischer Kontakte mit den beiden Elektromotoren in elektrischer Verbindung ist. Hierdurch entfällt ein Gehäuse wodurch erneut die Produktionskosten gesenkt werden.It is also advantageous if each of the two electric motors has a control, the respective control regulating the motor speed of the associated electric motor in accordance with the command variable specified by the higher-level control and / or regulation, and the controls being designed as modules, each based on the associated one Electric motor are in particular releasably attachable and are in electrical connection with the respective electric motor by means of electrical contacts. In a particularly preferred embodiment, the controls are arranged in a housing. This housing is in particular releasably attachable to one of the electric motors and is in electrical connection with the two electric motors by means of electrical contacts. This eliminates the need for a housing, which in turn reduces production costs.
Die Verwendung von Elektromotoren, deren Drehzahl mittels einer Steuerung bzw. Regelung beliebig zwischen dem Motorstillstand und der Nenndrehzahl einstell- bzw. regelbar sind, hat den Vorteil, daß die geforderte Förderhöhe genau und stetig einstellbar ist. Eine Änderung des Förderstroms bzw. der Anlagennetzkennlinie kann mittels der Regelung und der beliebig einstellbaren Drehzahlen der Laufräder ohne auftretende Drucksprünge im Leitungsnetz erreicht werden. Durch die Stetigkeit und Gleichmäßigkeit der Einregelung werden sämtliche Komponenten des Leitungsnetzes vorteilhaft weniger belastet, wodurch sich die Betriebssicherheit erhöht und die Wartungs- und Reparaturkosten gesenkt werden.The use of electric motors, the speed of which can be adjusted or regulated as desired between the motor standstill and the nominal speed by means of a control or regulation, has the advantage that the required delivery head can be set precisely and continuously. A change in the flow rate or the system network characteristic can be achieved by means of the control and the freely adjustable speeds of the impellers without pressure jumps occurring in the line network. Due to the continuity and uniformity of the regulation, all components of the line network are advantageously less stressed, which increases operational safety and reduces maintenance and repair costs.
Weicht der Ist-Wert der Druckdifferenz bzw. Förderhöhe vom vorgegebenen Sollwert ab, so kann z. B. bei einer lastabhängigen Zu- bzw. Abschaltung der zweiten Pumpe die Drehzahl der zweiten Pumpe kontinuierlich vom Stillstand bis zur erforderlichen Drehzahl erhöht werden, wodurch Drucksprünge vermieden werden.If the actual value of the pressure difference or delivery head deviates from the specified setpoint, z. B. with a load-dependent connection or disconnection of the second pump, the speed of the second pump can be increased continuously from standstill to the required speed, thereby avoiding pressure jumps.
Die Führungsgröße ist dabei vorteilshaft die Förderhöhe bzw. Druckdifferenz zwischen Ansaug- und Auslaßseite der jeweiligen Pumpe. Die Druckdifferenz kann dabei mittels eines herkömmlichen Druckmessers ermittelt werden.The command variable is advantageously the delivery head or pressure difference between the suction and outlet side of the respective pump. The pressure difference can be determined using a conventional pressure meter.
Bevorzugt wird jedoch die Stromaufnahme jedes Elektromotors von der jeweils zugehörigen Regelung ermittelt, wobei aus der Stromaufnahme des Motors die tatsächliche Förderhöhe bzw. Druckdifferenz zwischen Ansaug- und Auslaßseite der jeweiligen Pumpe aus der Pumpen- und Motorkennlinie ermittelbar ist und die ermittelte Druckdifferenz der Ist-Wert für die jeweilige Regelung ist.However, the current consumption of each electric motor is preferably determined by the respective associated control, the actual delivery head or pressure difference between the intake and outlet side of the respective pump being able to be determined from the pump and motor characteristic curve from the current consumption of the motor, and the pressure difference determined being the actual value for the respective regulation.
Mittels der übergeordneten Steuerung können den Regelungen in ihren Werten unterschiedliche Führungsgrößen vorgegeben werden, wodurch sich eine beliebige Förderhöhe bzw. Druckdifferenz einregeln läßt. Vorteilsmäßig wird die Pumpe im Doppelbetrieb betrieben, wobei die übergeordnete Steuerung zur Erzielung einer gewünschten Förderhöhe beide Pumpen gleichzeitig einschaltet und beiden Regelungen gleiche Werte für die Führungsgröße vorgibt, derart, daß beide Pumpen mit der gleichen Drehzahl fördern. Beide Pumpen haben vorteilsmäßig die gleichen Pumpenkennlinien, wodurch beide Pumpen bei gleichen Drehzahlen in jeweils gleichen Betriebspunkten laufen. Hierdurch werden beide Pumpen mit den gleichen Betriebszeiten betrieben, wodurch sich eine gleichmäßige Abnutzung beider Pumpen erzielen läßt. Das Wartungsintervall ist dann für beide Pumpen gleich groß, wobei die Wartung für beide Pumpen gleichzeitig durchgeführt werden kann.By means of the higher-level control, the control values can be given different reference values, which means that any delivery head or pressure difference can be adjusted. The pump is advantageously operated in double operation, with the higher-level control unit switching on both pumps at the same time in order to achieve a desired delivery head, and both controls specifying the same values for the reference variable, in such a way that both pumps deliver at the same speed. Both pumps advantageously have the same pump characteristics, which means that both pumps run at the same speed in the same operating points. As a result, both pumps are operated with the same operating times, which means that both pumps can wear evenly. The maintenance interval is then the same for both pumps, whereby maintenance can be carried out for both pumps at the same time.
Dadurch, daß beide Pumpen mit gleicher Drehzahl fördern, sind die Drehzahlen der beiden Pumpen niedriger als die Drehzahl einer einzigen Pumpe bei gleicher bereitzustellender Förderhöhe. Die Pumpenlaufgeräusche sind dadurch erheblich geringer. Die Pumpe läuft somit leiser und ruhiger.Because both pumps deliver at the same speed, the speeds of the two pumps are lower than the speed of a single pump with the same delivery head to be provided. The pump running noises are significantly lower. The pump runs quieter and quieter.
Ein weiterer Vorteil dieses Verfahrens ist, daß kein Umschalten bzw. Zuschalten nötig ist, wodurch vorteilsmäßig Druck- und Mengenstromsprünge vermieden werden.Another advantage of this method is that no switching or switching is necessary, which advantageously avoids pressure and volume flow jumps.
Es ist ebenfalls vorteilsmäßig, wenn die Regelungen Module sind, die jeweils auf dem zugehörigen Elektromotor insbesondere lösbar befestigbar sind und mittels elektrischer Kontakte mit dem Elektromotor in elektrischer Verbindung sind. Auch ist es vorteilsmäßig, wenn die Regelungen in einem Gehäuse angeordnet sind und das Gehäuse als Modul auf einem Elektromotor insbesondere lösbar befestigt ist. Ebenfalls sollte die übergeordnete Steuerung als Modul ausgebildet sein, wobei das Modul auf einem Regelungsmodul insbesondere lösbar befestigbar sein sollte. Das Steuerungsmodul ist dabei mittels elektrischer Kontakte mit dem Regelungsmodul in elektrischer Verbindung. Auch ist es vorteilhaft, wenn die übergeordnete Steuerung zusammen mit den beiden Regelungen in einem Gehäuse angeordnet sind und das Gehäuse als Modul auf einem Elektromotor insbesondere lösbar befestigbar ist. In einer weiteren, ebenfalls vorteilsmäßigen Ausführungsform ist die übergeordnete Steuerung zusammen mit nur einer Regelung eines Elektromotors in einem Gehäuse angeordnet, wobei das Gehäuse als Modul auf diesem Elektromotor insbesondere lösbar befestigbar ist und die Anregelung des anderen Elektromotors als Modul auf dem anderen Elektromotor insbesondere lösbar befestigbar ist.It is also advantageous if the controls are modules, each of which can in particular be releasably attached to the associated electric motor and are in electrical connection with the electric motor by means of electrical contacts. It is also advantageous if the controls are arranged in a housing and the housing is in particular releasably attached as a module to an electric motor. The higher-level control system should also be designed as a module, the module should in particular be releasably attachable to a control module. The control module is in electrical connection with the control module by means of electrical contacts. It is also advantageous if the higher-level control system is arranged in a housing together with the two controls and the housing can be detachably attached as a module to an electric motor. In a further, likewise advantageous embodiment, the higher-level control is arranged in a housing together with only one regulation of an electric motor, the housing as a module on this electric motor being particularly releasably attachable and the control of the other electric motor as a module on the other electric motor being releasably attachable is.
Eine derartige Modulbauweise läßt es zu, daß verschiedene benutzerspezifische Steuerungen und/oder Regelungen einfach und schnell an der Doppelpumpe befestigbar sind, wodurch zusätzliche Kabel unnötig werden und sich eine hohe Betriebssicherheit der Pumpe erzielen läßt.Such a modular design allows various user-specific controls and / or regulations to be easily and quickly attached to the double pump, which means that additional cables are unnecessary and high operational reliability of the pump can be achieved.
Wenn es gewünscht ist, kann die übergeordnete Steuerung vorteilshaft mittels Daten- und/oder Steuerleitungen mit einem Pumpenleitrechner oder mit einer oder mehreren anderen übergeordneten Steuerungen oder Regelungen von Einzel- oder Doppelpumpen in Verbindung sein. Dies hat den Vorteil, daß mittels einer übergeordneten Steuerung z.B. mehrere Doppelpumpen steuerbar sind.If desired, the higher-level control system can advantageously be connected to a pump control computer by means of data and / or control lines or to one or more other higher-level control systems or controls of single or double pumps. This has the advantage that several double pumps can be controlled by means of a higher-level controller.
Die übergeordnete Steuerung kann zudem programmierbar sein. Sie kann zusätzlich eine programmierbare Zeitschaltung haben, mittels der die Pumpen in vorgebbaren Zeitintervallen ein- oder ausschaltbar sind oder ihre Drehzahlen oder das Niveau der Förderhöhe voreinstellbar sind. Zudem kann die übergeordnete Steuerung die Pumpen in zeitlicher Reihenfolge abwechselnd einschalten, derart, daß bis auf die Einschaltphase immer nur eine Pumpe das Fördermedium fördert. Hierdurch läßt sich vorteilsmäßig erreichen, daß beide Pumpen mit gleichen Betriebszeiten gefahren werden, so daß die Wartungsintervalle für die Pumpen gleich angesetzt werden können. Auch kann die übergeordnete Steuerung bei einem Defekt der einen Pumpe die Drehzahl der andern Pumpe erhöhen oder die defekte Pumpe abschalten, wobei gleichzeitig die andere Pumpe die Arbeit der defekten Pumpe vollständig übernimmt, um die Förderhöhe konstant zu halten bzw. den Druckabfall zwischen Pumpenansaug- und Pumpenauslaßseite auszugleichen. Durch eine derartige Redundanz erhöht sich die Funktionssicherheit der Anlage, was vorteilsmäßig die Betriebskosten und Wartungskosten niedrig hält.The higher-level controller can also be programmable. It can also have a programmable timer, by means of which the pumps can be switched on or off at predefinable time intervals, or their speeds or the level of the delivery head can be preset. In addition, the higher-level control system can switch on the pumps alternately in chronological order, such that, apart from the switch-on phase, only one pump ever conveys the pumped medium. In this way, it can advantageously be achieved that both pumps are operated with the same operating times, so that the maintenance intervals for the pumps can be set the same. In the event of a defect in one pump, the higher-level control system can also increase the speed of the other pump or switch off the defective pump, while the other pump takes over the work of the defective pump completely in order to keep the head constant or the pressure drop between the pump suction and Compensate the pump outlet side. Such redundancy increases the functional reliability of the system, which advantageously keeps operating and maintenance costs low.
Die Erfindung wird nachfolgend anhand der Zeichnungen näher erläutert.The invention is explained in more detail below with reference to the drawings.
Es zeigen:
- Figur 1:
- Eine Doppelpumpe mit übergeordneter Steuerung
- Figur 2:
- Eine Seitenansicht einer Doppelpumpe mit übergeordneter Steuerung
- Figur 3:
- Ein Blockschaltbild einer Doppelpumpe mit übergeordneter Steuerung und zusätzlicher Regelungsmodule für jeden Elektromotor
- Figur 4:
- Zwei Doppelpumpen mit lediglich einer übergeordneter Steuerung
- Figur 5:
- Eine Doppelpumpe, bei der die Regelungen und die übergeordnete Steuerung in einem Gehäuse angeordnet sind.
- Figure 1:
- A double pump with higher-level control
- Figure 2:
- A side view of a double pump with higher-level control
- Figure 3:
- A block diagram of a double pump with higher-level control and additional control modules for each electric motor
- Figure 4:
- Two double pumps with only one higher-level control
- Figure 5:
- A double pump, in which the controls and the higher-level control are arranged in one housing.
Figur 1 zeigt eine Doppelpumpe mit einem Gehäuse 1, welches eine Pumpenansaugseite 2b und eine Pumpenauslaßseite 2a hat. In dem Gehäuse 1 sind zwei nicht dargestellte Pumpenlaufräder angeordnet, die jeweils von den Elektromotoren 3a, 3b angetrieben werden. Auf den Motorengehäusen sind Regelungen 5 als Module mittels Schraub- oder Schnappverbindungen befestigt. Auf dem einen Regelungsmodul 5 ist das übergeordnete Steuerungsmodul 4 befestigt, welches seinerseits mittels einer schnapp- oder Schraubverbindung auf dem Regelungsmodul 5 befestigt ist. Das übergeordnete Steuerungsmodul 4 verfügt über Anzeigeelemente 4a, sowie über eine Eingabe-Tastatur 4b zur Einstellung von bestimmten Programmen bzw. Pumpenschaltungen.FIG. 1 shows a double pump with a
Das übergeordnete Steuerungsmodul 4 ist mittels eines Übertragungskabels 6 mit dem Regelungsmodul des zweiten Elektromotors 3b verbunden und steuert diesen über das Kabel 6.The higher-
In Figur 2 ist eine Seitenansicht der Doppelpumpe dargestellt.FIG. 2 shows a side view of the double pump.
Figur 3 zeigt ein mögliches Blockschaltbild einer Doppelpumpe. Die übergeordnete Steuerung 4 hat dabei eine CPU, welche mit einem Speicher, einer Eingabemöglichkeit zur Programmierung, einer Anzeige des Programmablaufs, sowie der Betriebszustände und einen Datenbus, über die es mit den nachgeschalteten Regelungen oder wie in Figur 4 dargestellt, mit anderen Pumpen kommuniziert bzw. diese steuert.Figure 3 shows a possible block diagram of a double pump. The higher-
Wie in Figur 3 dargestellt, ist die eigentliche Regelung autark in den Regelungsmodulen 5 angeordnet und regelt die Motordrehzahl gemäß des vorgegebenen Soll-Wertes ein. Dabei wird die Stromaufnahme des Motors von der Regelung ermittelt und anhand der bekannten Pumpen- und Motorkennlinie die von der Pumpe momentan erzeugte Druckdifferenz p2 - p1 zwischen dem Ansaugstutzen 2b und dem Auslaßstutzen 2a berechnet. Der errechnete Ist-Wert der Druckdifferenz der Pumpe wird mit dem durch die übergeordneten Steuerung vorgegebenen Soll-Wert der Förderhöhe (Führungsgröße) verglichen. Bei einer Abweichung der beiden Werte, versucht die Regelung die Motordrehzahl der Pumpe entsprechend nachzuregeln.As shown in FIG. 3, the actual control is arranged autonomously in the
Jede Regelung 5 ist über eine zusätzliche Kommunikationsschnittstelle mit der übergeordneten Steuerung 4 in Verbindung. Mittels der Kommunikationsschnittstelle tauschen die Regelungen 5 mit der übergeordneten Steuerung Daten aus. So kann die Regelung 5 der übergeordneten Steuerung 4 einen Defekt der jeweiligen Pumpe oder des jeweiligen Motors (3a, 3b) mitteilen. Auch kann die übergeordnete Steuerung 4 die Pumpe in bestimmte Betriebsarten schalten. Mögliche Betriebsarten sind z.B. Stillstand, maximale Drehzahl oder Regelungsbetrieb der Pumpe. So ist es möglich, daß die eine Pumpe mit maximaler Drehzahl fördert und die andere Pumpe im Regelbetrieb gefahren wird. Eine weiterer Betriebsmodus ist die Synchronisierung der beiden Pumpen, derart, daß beide Pumpen mit gleicher Drehzahl gefahren werden. Auch ist es möglich, daß lediglich eine Pumpe im Betrieb ist und die andere stillgesetzt ist.Each
Bei einem Defekt einer Pumpe, wird diese über die Kommunikationsschnittstelle die übergeordnete Steuerung 4 alarmieren, woraufhin die übergeordnete Steuerung 4 die Pumpen gemäß des eingespeicherten Programms anders schaltet bzw. neue Soll-Werte berechnet.If a pump is defective, it will alarm the higher-
Figur 5 zeigt eine Doppelpumpe, bei der die Regelungen für die beiden Pumpen zusammen mit der übergeordneten Steuerung in einem Gehäuse angeordnet sind und das Gehäuse auf einem Elektromotor 3 befestigt ist.FIG. 5 shows a double pump, in which the controls for the two pumps are arranged in a housing together with the higher-level control and the housing is fastened on an
Claims (19)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19511170 | 1995-03-28 | ||
DE19511170A DE19511170A1 (en) | 1995-03-28 | 1995-03-28 | Double pump with higher-level control |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0735273A1 true EP0735273A1 (en) | 1996-10-02 |
EP0735273B1 EP0735273B1 (en) | 1998-05-27 |
Family
ID=7757860
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96104669A Expired - Lifetime EP0735273B1 (en) | 1995-03-28 | 1996-03-25 | Twin pump with main control system |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0735273B1 (en) |
DE (2) | DE19511170A1 (en) |
Cited By (39)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1079113A1 (en) * | 1999-08-21 | 2001-02-28 | Grundfos A/S | Centrifugal pump casing for a circulating pump for two fluid circuits |
EP1614903A1 (en) | 2004-07-07 | 2006-01-11 | Grundfos A/S | Driving unit for a centrifugal pump |
EP1790858A1 (en) * | 2005-11-23 | 2007-05-30 | Pentair Water Pool and Spa, Inc. | Control algorithm of variable speed pumping system |
EP2070461A2 (en) * | 2007-12-11 | 2009-06-17 | Askoll Holding S.r.l. | Pump for a dishwashing machine and corresponding pump assembly and dishwashing machine |
WO2009079447A1 (en) | 2007-12-14 | 2009-06-25 | Itt Manufacturing Enterprises, Inc. | Synchronous torque balance in multiple pump systems |
WO2010009704A2 (en) * | 2008-07-19 | 2010-01-28 | Alldos Eichler Gmbh | Actuator unit comprising a separate control unit |
US7845913B2 (en) | 2004-08-26 | 2010-12-07 | Pentair Water Pool And Spa, Inc. | Flow control |
WO2011039166A1 (en) * | 2009-09-30 | 2011-04-07 | Ksb Aktiengesellschaft | Centrifugal pump unit having a switching device |
CN102128163A (en) * | 2010-01-19 | 2011-07-20 | 格伦德福斯管理联合股份公司 | Method for determining the functional relation of several pumps |
WO2013156099A3 (en) * | 2012-04-20 | 2013-12-12 | Wilo Se | Motor centrifugal pump having junction box |
EP2778423A1 (en) * | 2013-03-11 | 2014-09-17 | Grundfos Holding A/S | Centrifugal pump assembly |
EP2940309A1 (en) | 2014-04-30 | 2015-11-04 | Wilo Se | Method for regulating a pump system and regulated pump system |
EP2412981B1 (en) | 2010-07-30 | 2016-05-04 | Grundfos Management A/S | Pump system |
US9399992B2 (en) | 2003-12-08 | 2016-07-26 | Pentair Water Pool And Spa, Inc. | Pump controller system and method |
RU2599402C2 (en) * | 2015-02-24 | 2016-10-10 | Открытое акционерное общество "Ракетно-космическая корпорация "Энергия" имени С.П. Королева" | Duplicated electrically driven pump unit |
US9551344B2 (en) | 2004-08-26 | 2017-01-24 | Pentair Water Pool And Spa, Inc. | Anti-entrapment and anti-dead head function |
US9568005B2 (en) | 2010-12-08 | 2017-02-14 | Pentair Water Pool And Spa, Inc. | Discharge vacuum relief valve for safety vacuum release system |
US9712098B2 (en) | 2009-06-09 | 2017-07-18 | Pentair Flow Technologies, Llc | Safety system and method for pump and motor |
US9726184B2 (en) | 2008-10-06 | 2017-08-08 | Pentair Water Pool And Spa, Inc. | Safety vacuum release system |
DE202013012600U1 (en) | 2013-03-11 | 2017-11-13 | Grundfos Holding A/S | A centrifugal pump unit |
US9885360B2 (en) | 2012-10-25 | 2018-02-06 | Pentair Flow Technologies, Llc | Battery backup sump pump systems and methods |
US9932984B2 (en) | 2004-08-26 | 2018-04-03 | Pentair Water Pool And Spa, Inc. | Pumping system with power optimization |
EP3318761A1 (en) * | 2016-11-08 | 2018-05-09 | Schneider Toshiba Inverter Europe SAS | Method and system for controlling a multi-pump system |
US10030647B2 (en) | 2010-02-25 | 2018-07-24 | Hayward Industries, Inc. | Universal mount for a variable speed pump drive user interface |
EP3369934A1 (en) * | 2017-03-03 | 2018-09-05 | Grundfos Holding A/S | Circulation pump |
WO2018162547A1 (en) * | 2017-03-09 | 2018-09-13 | KSB SE & Co. KGaA | Method for operating a circulation pump in a twin pump construction |
EP3428453A1 (en) * | 2017-07-14 | 2019-01-16 | Grundfos Holding A/S | Multi-pump control keeping the head constant while ramping up or down a subset of the pumps |
CN109253092A (en) * | 2017-07-14 | 2019-01-22 | 格兰富控股联合股份公司 | Multi-pump control system |
US10240604B2 (en) | 2004-08-26 | 2019-03-26 | Pentair Water Pool And Spa, Inc. | Pumping system with housing and user interface |
EP2151578B1 (en) * | 2008-08-04 | 2019-09-18 | Grundfos Management A/S | Circulation pump system |
US10465676B2 (en) | 2011-11-01 | 2019-11-05 | Pentair Water Pool And Spa, Inc. | Flow locking system and method |
US10590926B2 (en) | 2009-06-09 | 2020-03-17 | Pentair Flow Technologies, Llc | Method of controlling a pump and motor |
US10718337B2 (en) | 2016-09-22 | 2020-07-21 | Hayward Industries, Inc. | Self-priming dedicated water feature pump |
US10731655B2 (en) | 2004-08-26 | 2020-08-04 | Pentair Water Pool And Spa, Inc. | Priming protection |
US10871001B2 (en) | 2004-08-26 | 2020-12-22 | Pentair Water Pool And Spa, Inc. | Filter loading |
EP3574218A4 (en) * | 2017-01-27 | 2021-01-20 | S. A. Armstrong Limited | Dual body variable duty performance optimizing pump unit |
US10947981B2 (en) | 2004-08-26 | 2021-03-16 | Pentair Water Pool And Spa, Inc. | Variable speed pumping system and method |
CN113944636A (en) * | 2020-07-17 | 2022-01-18 | 格兰富控股联合股份公司 | Multi-pump control system |
EP4390140A1 (en) | 2022-12-21 | 2024-06-26 | Wilo Se | Double pump with insulating liner and related assembly method |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8337166B2 (en) | 2001-11-26 | 2012-12-25 | Shurflo, Llc | Pump and pump control circuit apparatus and method |
US8436559B2 (en) | 2009-06-09 | 2013-05-07 | Sta-Rite Industries, Llc | System and method for motor drive control pad and drive terminals |
EP2573403B1 (en) * | 2011-09-20 | 2017-12-06 | Grundfos Holding A/S | Pump |
EP2607707B2 (en) | 2011-12-23 | 2022-11-23 | Grundfos Holding A/S | Electric motor |
DE102012204212B4 (en) * | 2012-03-16 | 2024-02-29 | Mahle International Gmbh | Pump module with a housing |
LU102816B1 (en) | 2021-06-01 | 2022-12-01 | Wilo Se | double pump unit |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1115826A (en) * | 1954-12-10 | 1956-04-30 | Flygts Pumpar Ab | Pumping installation |
DE1653743A1 (en) * | 1967-08-12 | 1971-07-01 | Loewe Pumpenfabrik Gmbh | Pump system, especially for hot water heating |
FR2427491A1 (en) * | 1978-05-29 | 1979-12-28 | Pumpen & Verdichter Veb K | HIGH PRESSURE CENTRIFUGAL PUMPING UNIT WITH INDEPENDENT DRIVES |
EP0226858A1 (en) * | 1985-11-30 | 1987-07-01 | WILO GmbH | Method for controlling the lift pressure of a pump |
EP0351271A1 (en) * | 1988-07-13 | 1990-01-17 | POMPES SALMSON Société Anonyme à directoire dite: | Coupling of two electrical motors |
EP0464360A2 (en) * | 1990-07-06 | 1992-01-08 | WILO GmbH | Connecting plug for duplex centrifugal pump |
DE4128390C1 (en) * | 1991-08-27 | 1992-12-24 | Loewe Pumpenfabrik Gmbh, 2120 Lueneburg, De | Rapid control appts. for fluid supply installation - has controller connected via digital communication line to pump motor regulators which provide setting signals for frequency converters |
DE4129651A1 (en) * | 1991-09-06 | 1993-09-09 | Wema Ingenieurbuero Werner Kla | Electromotor drive unit with electric motor control - has electric motor and control circuitry, for driving and-or controlling revolution speed and torque, as compact, integral module |
EP0577201A1 (en) * | 1992-06-30 | 1994-01-05 | STMicroelectronics S.r.l. | A control interface device for an electric motor and method of manufacturing the same |
DE4309382A1 (en) * | 1993-03-23 | 1994-09-29 | Bosch Gmbh Robert | Electronically commutated electric motor |
EP0619432A1 (en) * | 1993-04-08 | 1994-10-12 | Pumpenfabrik Ernst Vogel Gesellschaft m.b.H. | Installation with at least one pump for liquids |
DE9415935U1 (en) * | 1994-10-04 | 1994-11-24 | Grundfos A/S, Bjerringbro | Pump unit |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3342967C2 (en) * | 1983-11-28 | 1986-04-17 | Wilo-Werk Gmbh & Co, 4600 Dortmund | Electric motor with connection module for pumps |
DE4016039A1 (en) * | 1990-05-18 | 1991-11-21 | Vortex Gmbh Dt | WORKING DEVICE WITH CONTROL DEVICE |
DE4129086C1 (en) * | 1991-09-02 | 1992-10-22 | Gesellschaft Fuer Fahrzeugklimaregelung Mbh, 7141 Schwieberdingen, De | |
AT405996B (en) * | 1993-07-09 | 2000-01-25 | Rudin Franz | METHOD FOR REGULATING THE SPEED OF AN ELECTRIC MOTOR AND DEVICE FOR IMPLEMENTING THE METHOD |
DE9400955U1 (en) * | 1994-01-21 | 1994-03-03 | Grundfos A/S, Bjerringbro | Pump unit |
-
1995
- 1995-03-28 DE DE19511170A patent/DE19511170A1/en not_active Withdrawn
-
1996
- 1996-03-25 DE DE59600224T patent/DE59600224D1/en not_active Expired - Lifetime
- 1996-03-25 EP EP96104669A patent/EP0735273B1/en not_active Expired - Lifetime
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1115826A (en) * | 1954-12-10 | 1956-04-30 | Flygts Pumpar Ab | Pumping installation |
DE1653743A1 (en) * | 1967-08-12 | 1971-07-01 | Loewe Pumpenfabrik Gmbh | Pump system, especially for hot water heating |
FR2427491A1 (en) * | 1978-05-29 | 1979-12-28 | Pumpen & Verdichter Veb K | HIGH PRESSURE CENTRIFUGAL PUMPING UNIT WITH INDEPENDENT DRIVES |
EP0226858A1 (en) * | 1985-11-30 | 1987-07-01 | WILO GmbH | Method for controlling the lift pressure of a pump |
EP0351271A1 (en) * | 1988-07-13 | 1990-01-17 | POMPES SALMSON Société Anonyme à directoire dite: | Coupling of two electrical motors |
EP0464360A2 (en) * | 1990-07-06 | 1992-01-08 | WILO GmbH | Connecting plug for duplex centrifugal pump |
DE4128390C1 (en) * | 1991-08-27 | 1992-12-24 | Loewe Pumpenfabrik Gmbh, 2120 Lueneburg, De | Rapid control appts. for fluid supply installation - has controller connected via digital communication line to pump motor regulators which provide setting signals for frequency converters |
DE4129651A1 (en) * | 1991-09-06 | 1993-09-09 | Wema Ingenieurbuero Werner Kla | Electromotor drive unit with electric motor control - has electric motor and control circuitry, for driving and-or controlling revolution speed and torque, as compact, integral module |
EP0577201A1 (en) * | 1992-06-30 | 1994-01-05 | STMicroelectronics S.r.l. | A control interface device for an electric motor and method of manufacturing the same |
DE4309382A1 (en) * | 1993-03-23 | 1994-09-29 | Bosch Gmbh Robert | Electronically commutated electric motor |
EP0619432A1 (en) * | 1993-04-08 | 1994-10-12 | Pumpenfabrik Ernst Vogel Gesellschaft m.b.H. | Installation with at least one pump for liquids |
DE9415935U1 (en) * | 1994-10-04 | 1994-11-24 | Grundfos A/S, Bjerringbro | Pump unit |
Cited By (82)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1079113A1 (en) * | 1999-08-21 | 2001-02-28 | Grundfos A/S | Centrifugal pump casing for a circulating pump for two fluid circuits |
US10416690B2 (en) | 2003-12-08 | 2019-09-17 | Pentair Water Pool And Spa, Inc. | Pump controller system and method |
US10642287B2 (en) | 2003-12-08 | 2020-05-05 | Pentair Water Pool And Spa, Inc. | Pump controller system and method |
US9399992B2 (en) | 2003-12-08 | 2016-07-26 | Pentair Water Pool And Spa, Inc. | Pump controller system and method |
US10241524B2 (en) | 2003-12-08 | 2019-03-26 | Pentair Water Pool And Spa, Inc. | Pump controller system and method |
US10289129B2 (en) | 2003-12-08 | 2019-05-14 | Pentair Water Pool And Spa, Inc. | Pump controller system and method |
US10409299B2 (en) | 2003-12-08 | 2019-09-10 | Pentair Water Pool And Spa, Inc. | Pump controller system and method |
EP1614903A1 (en) | 2004-07-07 | 2006-01-11 | Grundfos A/S | Driving unit for a centrifugal pump |
US10240604B2 (en) | 2004-08-26 | 2019-03-26 | Pentair Water Pool And Spa, Inc. | Pumping system with housing and user interface |
US10527042B2 (en) | 2004-08-26 | 2020-01-07 | Pentair Water Pool And Spa, Inc. | Speed control |
US10871001B2 (en) | 2004-08-26 | 2020-12-22 | Pentair Water Pool And Spa, Inc. | Filter loading |
US10415569B2 (en) | 2004-08-26 | 2019-09-17 | Pentair Water Pool And Spa, Inc. | Flow control |
US10871163B2 (en) | 2004-08-26 | 2020-12-22 | Pentair Water Pool And Spa, Inc. | Pumping system and method having an independent controller |
US9932984B2 (en) | 2004-08-26 | 2018-04-03 | Pentair Water Pool And Spa, Inc. | Pumping system with power optimization |
US10947981B2 (en) | 2004-08-26 | 2021-03-16 | Pentair Water Pool And Spa, Inc. | Variable speed pumping system and method |
US9777733B2 (en) | 2004-08-26 | 2017-10-03 | Pentair Water Pool And Spa, Inc. | Flow control |
US10240606B2 (en) | 2004-08-26 | 2019-03-26 | Pentair Water Pool And Spa, Inc. | Pumping system with two way communication |
US7845913B2 (en) | 2004-08-26 | 2010-12-07 | Pentair Water Pool And Spa, Inc. | Flow control |
US10731655B2 (en) | 2004-08-26 | 2020-08-04 | Pentair Water Pool And Spa, Inc. | Priming protection |
US11391281B2 (en) | 2004-08-26 | 2022-07-19 | Pentair Water Pool And Spa, Inc. | Priming protection |
US9605680B2 (en) | 2004-08-26 | 2017-03-28 | Pentair Water Pool And Spa, Inc. | Control algorithm of variable speed pumping system |
US10480516B2 (en) | 2004-08-26 | 2019-11-19 | Pentair Water Pool And Spa, Inc. | Anti-entrapment and anti-deadhead function |
US10502203B2 (en) | 2004-08-26 | 2019-12-10 | Pentair Water Pool And Spa, Inc. | Speed control |
US11073155B2 (en) | 2004-08-26 | 2021-07-27 | Pentair Water Pool And Spa, Inc. | Pumping system with power optimization |
US9551344B2 (en) | 2004-08-26 | 2017-01-24 | Pentair Water Pool And Spa, Inc. | Anti-entrapment and anti-dead head function |
EP1790858A1 (en) * | 2005-11-23 | 2007-05-30 | Pentair Water Pool and Spa, Inc. | Control algorithm of variable speed pumping system |
EP2070461A2 (en) * | 2007-12-11 | 2009-06-17 | Askoll Holding S.r.l. | Pump for a dishwashing machine and corresponding pump assembly and dishwashing machine |
EP2070461A3 (en) * | 2007-12-11 | 2010-03-10 | Askoll Holding S.r.l. | Pump for a dishwashing machine and corresponding pump assembly and dishwashing machine |
WO2009079447A1 (en) | 2007-12-14 | 2009-06-25 | Itt Manufacturing Enterprises, Inc. | Synchronous torque balance in multiple pump systems |
EP2229610A4 (en) * | 2007-12-14 | 2014-03-26 | Itt Mfg Entpr Llc | Synchronous torque balance in multiple pump systems |
EP2229610A1 (en) * | 2007-12-14 | 2010-09-22 | ITT Manufacturing Enterprises, Inc. | Synchronous torque balance in multiple pump systems |
WO2010009704A2 (en) * | 2008-07-19 | 2010-01-28 | Alldos Eichler Gmbh | Actuator unit comprising a separate control unit |
WO2010009704A3 (en) * | 2008-07-19 | 2010-11-18 | Alldos Eichler Gmbh | Actuator unit comprising a separate control unit |
EP2151578B1 (en) * | 2008-08-04 | 2019-09-18 | Grundfos Management A/S | Circulation pump system |
US9726184B2 (en) | 2008-10-06 | 2017-08-08 | Pentair Water Pool And Spa, Inc. | Safety vacuum release system |
US10724263B2 (en) | 2008-10-06 | 2020-07-28 | Pentair Water Pool And Spa, Inc. | Safety vacuum release system |
US9712098B2 (en) | 2009-06-09 | 2017-07-18 | Pentair Flow Technologies, Llc | Safety system and method for pump and motor |
US11493034B2 (en) | 2009-06-09 | 2022-11-08 | Pentair Flow Technologies, Llc | Method of controlling a pump and motor |
US10590926B2 (en) | 2009-06-09 | 2020-03-17 | Pentair Flow Technologies, Llc | Method of controlling a pump and motor |
WO2011039166A1 (en) * | 2009-09-30 | 2011-04-07 | Ksb Aktiengesellschaft | Centrifugal pump unit having a switching device |
CN102128163A (en) * | 2010-01-19 | 2011-07-20 | 格伦德福斯管理联合股份公司 | Method for determining the functional relation of several pumps |
EP2354554A1 (en) * | 2010-01-19 | 2011-08-10 | Grundfos Management A/S | Method for determining the functional relationship of pumps |
CN102128163B (en) * | 2010-01-19 | 2015-09-09 | 格伦德福斯管理联合股份公司 | For determining the emic method of pump |
US11572877B2 (en) | 2010-02-25 | 2023-02-07 | Hayward Industries, Inc. | Universal mount for a variable speed pump drive user interface |
US10030647B2 (en) | 2010-02-25 | 2018-07-24 | Hayward Industries, Inc. | Universal mount for a variable speed pump drive user interface |
US12018677B2 (en) | 2010-02-25 | 2024-06-25 | Hayward Industries, Inc. | Universal mount for a variable speed pump drive user interface |
EP2412981B1 (en) | 2010-07-30 | 2016-05-04 | Grundfos Management A/S | Pump system |
US9568005B2 (en) | 2010-12-08 | 2017-02-14 | Pentair Water Pool And Spa, Inc. | Discharge vacuum relief valve for safety vacuum release system |
US10465676B2 (en) | 2011-11-01 | 2019-11-05 | Pentair Water Pool And Spa, Inc. | Flow locking system and method |
US10883489B2 (en) | 2011-11-01 | 2021-01-05 | Pentair Water Pool And Spa, Inc. | Flow locking system and method |
WO2013156099A3 (en) * | 2012-04-20 | 2013-12-12 | Wilo Se | Motor centrifugal pump having junction box |
US9885360B2 (en) | 2012-10-25 | 2018-02-06 | Pentair Flow Technologies, Llc | Battery backup sump pump systems and methods |
CN105121857A (en) * | 2013-03-11 | 2015-12-02 | 格兰富控股联合股份公司 | Centrifugal pump assembly |
CN105121857B (en) * | 2013-03-11 | 2018-04-03 | 格兰富控股联合股份公司 | Heating cycle pump assembly |
EP2778423A1 (en) * | 2013-03-11 | 2014-09-17 | Grundfos Holding A/S | Centrifugal pump assembly |
WO2014139784A1 (en) * | 2013-03-11 | 2014-09-18 | Grundfos Holding A/S | Centrifugal pump assembly |
DE202013012600U1 (en) | 2013-03-11 | 2017-11-13 | Grundfos Holding A/S | A centrifugal pump unit |
DE102014006258A1 (en) | 2014-04-30 | 2015-11-05 | Wilo Se | Method for controlling a pump system and regulated pump system |
EP2940309A1 (en) | 2014-04-30 | 2015-11-04 | Wilo Se | Method for regulating a pump system and regulated pump system |
RU2599402C2 (en) * | 2015-02-24 | 2016-10-10 | Открытое акционерное общество "Ракетно-космическая корпорация "Энергия" имени С.П. Королева" | Duplicated electrically driven pump unit |
US10718337B2 (en) | 2016-09-22 | 2020-07-21 | Hayward Industries, Inc. | Self-priming dedicated water feature pump |
CN108061029A (en) * | 2016-11-08 | 2018-05-22 | 施耐德东芝换流器欧洲公司 | Control the method and system of multiple pump |
FR3058479A1 (en) * | 2016-11-08 | 2018-05-11 | Schneider Toshiba Inverter Europe Sas | METHOD AND SYSTEM FOR CONTROLLING MULTI-PUMPS EQUIPMENT |
EP3318761A1 (en) * | 2016-11-08 | 2018-05-09 | Schneider Toshiba Inverter Europe SAS | Method and system for controlling a multi-pump system |
US10571878B2 (en) | 2016-11-08 | 2020-02-25 | Schneider Toshiba Inverter Europe Sas | Method and system for controlling a multi-pump system |
US11965512B2 (en) | 2017-01-27 | 2024-04-23 | S.A. Armstrong Limited | Dual body variable duty performance optimizing pump unit |
EP3574218A4 (en) * | 2017-01-27 | 2021-01-20 | S. A. Armstrong Limited | Dual body variable duty performance optimizing pump unit |
US11732719B2 (en) | 2017-01-27 | 2023-08-22 | S.A. Armstrong Limited | Dual body variable duty performance optimizing pump unit |
EP3369934A1 (en) * | 2017-03-03 | 2018-09-05 | Grundfos Holding A/S | Circulation pump |
WO2018158197A1 (en) * | 2017-03-03 | 2018-09-07 | Grundfos Holding A/S | Circulation pump assembly |
US11371509B2 (en) | 2017-03-03 | 2022-06-28 | Grundfos Holding A/S | Parallel circulation pump coordinating control assembly |
CN110382871A (en) * | 2017-03-09 | 2019-10-25 | Ksb股份有限公司 | Method for running the circulating pump of duplex mode |
WO2018162547A1 (en) * | 2017-03-09 | 2018-09-13 | KSB SE & Co. KGaA | Method for operating a circulation pump in a twin pump construction |
CN110382871B (en) * | 2017-03-09 | 2021-11-02 | Ksb股份有限公司 | Method for operating a circulation pump of double construction |
CN109253092B (en) * | 2017-07-14 | 2020-11-20 | 格兰富控股联合股份公司 | Multi-pump control system |
CN109253093A (en) * | 2017-07-14 | 2019-01-22 | 格兰富控股联合股份公司 | Multi-pump control system |
EP3428453A1 (en) * | 2017-07-14 | 2019-01-16 | Grundfos Holding A/S | Multi-pump control keeping the head constant while ramping up or down a subset of the pumps |
US10801503B2 (en) | 2017-07-14 | 2020-10-13 | Grundfos Holding A/S | Multi-pump control system with power consumption optimization |
CN109253092A (en) * | 2017-07-14 | 2019-01-22 | 格兰富控股联合股份公司 | Multi-pump control system |
CN113944636A (en) * | 2020-07-17 | 2022-01-18 | 格兰富控股联合股份公司 | Multi-pump control system |
CN113944636B (en) * | 2020-07-17 | 2023-11-10 | 格兰富控股联合股份公司 | Multi-pump control system |
EP4390140A1 (en) | 2022-12-21 | 2024-06-26 | Wilo Se | Double pump with insulating liner and related assembly method |
Also Published As
Publication number | Publication date |
---|---|
DE19511170A1 (en) | 1996-10-02 |
EP0735273B1 (en) | 1998-05-27 |
DE59600224D1 (en) | 1998-07-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0735273B1 (en) | Twin pump with main control system | |
DE3542370C2 (en) | Procedure for regulating the head of a pump | |
EP0169336A1 (en) | Control and actuation system, especially for water ring vacuum pumps | |
EP0132487B1 (en) | Process for controlling at least two turbo compressors mounted in parallel | |
DE3105376C2 (en) | Procedure for operating turbo compressors | |
EP0649723A2 (en) | Hydraulic actuation system for injection moulding machines | |
DE3787266T2 (en) | Electro-hydraulic auxiliary system. | |
DE4128390C1 (en) | Rapid control appts. for fluid supply installation - has controller connected via digital communication line to pump motor regulators which provide setting signals for frequency converters | |
DE4334134B4 (en) | Use of power and control electronics on an injection molding machine | |
DE3211814C1 (en) | Circulation pump for heating systems | |
DE102009004376B4 (en) | Method and system for controlling a turbocompressor network | |
DE19549154A1 (en) | Control unit for discrete electrical consumer load e.g. electric drive motor or electrohydraulic drive unit | |
DE19710675B4 (en) | Double pump with single and synchronous operation | |
EP1614903B1 (en) | Driving unit for a centrifugal pump | |
EP3048305A1 (en) | Reduction of the energy consumption of a variable speed water pump taking into account the current system load | |
EP2008162B1 (en) | Centrifugal pump unit with switching device | |
DE4229950A1 (en) | Method and circuit arrangement for controlling and regulating a pressure generator for several different hydraulic consumers connected in parallel | |
EP0230860A1 (en) | Method and apparatus for dosage regulation, especially for fire-fighting vehicle | |
DE2426904A1 (en) | DEVICE FOR REGULATING THE DISTRIBUTION OF A PRESSURIZED MEDIUM IN A HYDRAULIC CIRCUIT BY PRESSURE FROM A GROUP OF PUMPS WITH A CONSTANT FLOW RATE | |
DE2607285C2 (en) | Method for regulating a centrifugal pump system | |
DE2456038C2 (en) | ||
DE69001895T2 (en) | REFRIGERATION SYSTEM WITH SEVERAL COMPRESSORS. | |
EP0844396A1 (en) | Process for controlling the operation of a plant for pressurized air with several compressors | |
AT399433B (en) | Device for controlling a number of asynchronous motors, in particular motors for cascade pumping stations and cascade compressors | |
AT525047B1 (en) | Hydraulic drive device for a shaping machine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19960802 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): BE DE FR GB IT |
|
17Q | First examination report despatched |
Effective date: 19970212 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): BE DE FR GB IT |
|
ET | Fr: translation filed | ||
REF | Corresponds to: |
Ref document number: 59600224 Country of ref document: DE Date of ref document: 19980702 |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19980630 |
|
ITF | It: translation for a ep patent filed |
Owner name: SOCIETA' ITALIANA BREVETTI S.P.A. |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20110311 Year of fee payment: 16 |
|
BERE | Be: lapsed |
Owner name: *WILO G.M.B.H. Effective date: 20120331 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120331 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20140311 Year of fee payment: 19 Ref country code: IT Payment date: 20140319 Year of fee payment: 19 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20140319 Year of fee payment: 19 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20140417 Year of fee payment: 19 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 59600224 Country of ref document: DE |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20150325 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150325 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20151130 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20151001 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150325 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150331 |