EP2891802A1 - Automatic switch for a pump control system - Google Patents

Automatic switch for a pump control system Download PDF

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Publication number
EP2891802A1
EP2891802A1 EP14004023.9A EP14004023A EP2891802A1 EP 2891802 A1 EP2891802 A1 EP 2891802A1 EP 14004023 A EP14004023 A EP 14004023A EP 2891802 A1 EP2891802 A1 EP 2891802A1
Authority
EP
European Patent Office
Prior art keywords
switch
pump
main
main switch
automatic switch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP14004023.9A
Other languages
German (de)
French (fr)
Inventor
Arnold Denk
Jan Maurer
Michael KRÖNING
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WISY AG Haustechniksysteme Filtertechnik
Original Assignee
WISY AG Haustechniksysteme Filtertechnik
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by WISY AG Haustechniksysteme Filtertechnik filed Critical WISY AG Haustechniksysteme Filtertechnik
Publication of EP2891802A1 publication Critical patent/EP2891802A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/02—Stopping, starting, unloading or idling control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2203/00—Motor parameters
    • F04B2203/02—Motor parameters of rotating electric motors
    • F04B2203/0201—Current
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2205/00—Fluid parameters
    • F04B2205/05—Pressure after the pump outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2205/00—Fluid parameters
    • F04B2205/09—Flow through the pump
    • 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

Definitions

  • the invention relates to a circuit breaker for a pump control with a main switch for a pump supplying electrical current to the main circuit, with a flow switch on the pumped by the pump medium line and a sub-switch, which is actuated by the flow switch, the sub-switch part of a electronic control for actuating the main switch is.
  • Such switching machines are needed in a water network having a memory which is connected to a pump, which promotes water via a line system to a sampling point.
  • the pump should only be put into operation if water is actually withdrawn at the sampling point.
  • a flow switch z. B. in the form of a pressure sensor, such as z. B. in the DE 199 08 156 A1 is described, used, which operates in a pressure change, a switching machine that controls a pump that maintains the pressure at the sampling point.
  • the pressure sensor operates a reed switch in the switchgear, which includes a main switch for closing the circuit for the pump.
  • the machine contains additional inputs and outputs to control the water extraction system.
  • the reed contact is thus a secondary switch.
  • the automatic switcher queries the switching state of the auxiliary switch and opens the main switch, if there are other switching conditions at the inputs.
  • the invention is based on the task of reducing the power consumption of the switching device in stand-by mode.
  • the invention provides that the power supply for the controller consists of a switching regulator, which is a buck converter.
  • a buck converter is an electronic circuit in which the input voltage is reduced as loss-less as possible to a lower output voltage. The power consumption is therefore very low in the idle state (idle).
  • the actuator is a magnet and the sub-switch is a reed contact.
  • a pump 3 is connected via a feed line 2, from the output of which a media line 4 extends to a removal point 5.
  • a flow switch 6 which is set up so that in a media flow in the media line 4 due to the self-adjusting negative pressure, a magnet is moved, with a reed contact 7 is actuated.
  • the reed contact 7 is part of a switching machine 8, which includes an electronic controller 9 and a main switch 10, wherein the main switch 10 is located in an electrical power supply 11 for the pump 3.
  • the electronic control unit 9 has further inputs and outputs 12, 13, in particular further states of the media supply system being controlled at the inputs.
  • the main switch 10 is closed, so that the pump is supplied with current.
  • the flow monitor no longer responds so that the main switch 10 opens again and the pump 3 is switched off.
  • a buck converter 15 is provided.
  • the power consumption of the switch 8 is in standby mode below 500 mA and typically 200 mA.

Abstract

Eine Pumpensteuerung besitzt einen Hauptschalter (10) für einen eine Pumpe (3) mit elektrischen Strom versorgenden Hauptstromkreis, einem Strömungswächter (6) an der von der Pumpe (3) versorgte Medienleitung (4) und einem Nebenschalter, der von dem Strömungswächter (6) betätigbar ist, wobei der Nebenschalter Teil einer elektronischen Steuerung (9) zur Betätigung des Hauptschalters (10) ist. Um den Stromverbrauch einer solchen Pumpensteuerung im Stand-by-Betrieb zu minimieren ist vorgesehen, dass die Stromversorgung für die Steuerung (9) aus einem Tiefsetzsteller (15) besteht.A pump controller has a main switch (10) for a main circuit providing electrical power to a pump (3), a flow monitor (6) on the media line (4) supplied by the pump (3) and a secondary switch provided by the flow monitor (6). is operable, wherein the auxiliary switch is part of an electronic control (9) for actuating the main switch (10). In order to minimize the power consumption of such a pump control in stand-by mode, it is provided that the power supply for the controller (9) consists of a step-down converter (15).

Description

Die Erfindung bezieht sich auf einen Schaltautomat für eine Pumpensteuerung mit einem Hauptschalter für einen eine Pumpe mit elektrischen Strom versorgenden Hauptstromkreis, mit einem Strömungswächter an der von der Pumpe versorgten Medienleitung und mit einem Nebenschalter, der von dem Strömungswächter betätigbar ist, wobei der Nebenschalter Teil einer elektronischen Steuerung zur Betätigung des Hauptschalters ist.The invention relates to a circuit breaker for a pump control with a main switch for a pump supplying electrical current to the main circuit, with a flow switch on the pumped by the pump medium line and a sub-switch, which is actuated by the flow switch, the sub-switch part of a electronic control for actuating the main switch is.

Derartige Schaltautomaten werden in einem wassernetz benötigt, das einen Speicher aufweist, der an einer Pumpe angeschlossen ist, die Wasser über ein Leitungssystem zu einer Entnahmestelle fördert. Die Pumpe soll nur dann in Betrieb genommen werden, wenn an der Entnahmestelle tatsächlich Wasser entnommen wird. Dazu ist in der Leitung zur Wasserentnahme ein Strömungswächter z. B. in Form eines Drucksensors, wie er z. B. in der DE 199 08 156 A1 beschrieben ist, eingesetzt, der bei einer Druckänderung einen Schaltautomaten bedient, der eine Pumpe steuert, die den Druck an der Entnahmestelle aufrecht erhält.Such switching machines are needed in a water network having a memory which is connected to a pump, which promotes water via a line system to a sampling point. The pump should only be put into operation if water is actually withdrawn at the sampling point. For this purpose, in the line for water removal a flow switch z. B. in the form of a pressure sensor, such as z. B. in the DE 199 08 156 A1 is described, used, which operates in a pressure change, a switching machine that controls a pump that maintains the pressure at the sampling point.

In der Regel betätigt der Drucksensor einen Reedkontakt im Schaltautomaten, der einen Hauptschalter zum Schließen des Stromkreises für die Pumpe beinhaltet. Der Schaltautomat enthält weitere Ein- und Ausgänge, um das Wasserentnahmesystem zu steuern. Bei dem Reedkontakt handelt es sich somit um einen Nebenschalter. Der Schaltautomat fragt den Schaltzustand des Nebenschalters ab und öffnet, falls an den Eingängen weitere Schaltbedingungen vorliegen, den Hauptschalter.In general, the pressure sensor operates a reed switch in the switchgear, which includes a main switch for closing the circuit for the pump. The machine contains additional inputs and outputs to control the water extraction system. The reed contact is thus a secondary switch. The automatic switcher queries the switching state of the auxiliary switch and opens the main switch, if there are other switching conditions at the inputs.

Zur Stromversorgung des Schaltautomaten ist dieser an ein Stromnetz angeschlossen, wobei sich im Ruhezustand (Leerlauf) ein Stand-by-Energieverbrauch ergibt. Der größte Anteil am Stand-by-Energieverbrauch ergibt sich aus dem Umstand, dass in der Regel ein Spannungsteiler verwendet wird, um dem Schaltautomaten eine Niedervoltspannung zur Verfügung zu stellen.To power the automatic switch this is connected to a power grid, resulting in idle state (idle), a standby power consumption. The largest share of the stand-by energy consumption results from the fact that usually a voltage divider is used to provide the switchgear with a low-voltage supply available.

Die Erfindung beruht auf der Aufgabe, den Stromverbrauch des Schaltautomaten im Stand-by-Betrieb zu reduzieren.The invention is based on the task of reducing the power consumption of the switching device in stand-by mode.

Zur Lösung des Problems sieht die Erfindung vor, dass die Stromversorgung für die Steuerung aus einem Schaltregler besteht, der ein Tiefsetzsteller ist.To solve the problem, the invention provides that the power supply for the controller consists of a switching regulator, which is a buck converter.

Ein Tiefsetzsteller ist eine elektronische Schaltung, bei dem die Eingangsspannung möglichst verlustfrei auf eine geringere Ausgangsspannung reduziert wird. Der Stromverbrauch ist daher im Ruhezustand (Leerlauf) sehr gering.A buck converter is an electronic circuit in which the input voltage is reduced as loss-less as possible to a lower output voltage. The power consumption is therefore very low in the idle state (idle).

Vorzugsweise ist das Stellglied ein Magnet und der Nebenschalter ein Reedkontakt.Preferably, the actuator is a magnet and the sub-switch is a reed contact.

Im Folgenden soll anhand eines Ausführungsbeispieles die Erfindung näher erläutert werden. Dazu zeigt die einzige Figur einen elektronischen und hydraulischen Schaltplan.In the following, the invention will be explained in more detail with reference to an embodiment. The only figure shows an electronic and hydraulic circuit diagram.

An einem Speicher 1 ist über eine Zulaufleitung 2 eine Pumpe 3 angeschlossen, von deren Ausgang eine Medienleitung 4 zu einer Entnahmestelle 5 verläuft. In der Medienleitung 4 befindet sich ein Strömungswächter 6, der so eingerichtet ist, dass bei einem Medienfluss in der Medienleitung 4 auf Grund des sich einstellenden Unterdrucks ein Magnet bewegt wird, mit dem ein Reedkontakt 7 betätigt wird. Der Reedkontakt 7 ist Teil eines Schaltautomaten 8, der eine elektronische Steuerung 9 und einen Hauptschalter 10 enthält, wobei der Hauptschalter 10 in einer elektrischen Stromversorgung 11 für die Pumpe 3 liegt. Die elektronische Steuerung 9 weist weitere Einund Ausgänge 12, 13 auf, wobei insbesondere an den Eingängen weitere Zustände des Medienversorgungssystems kontrolliert werden.At a memory 1, a pump 3 is connected via a feed line 2, from the output of which a media line 4 extends to a removal point 5. In the media line 4 is a flow switch 6, which is set up so that in a media flow in the media line 4 due to the self-adjusting negative pressure, a magnet is moved, with a reed contact 7 is actuated. The reed contact 7 is part of a switching machine 8, which includes an electronic controller 9 and a main switch 10, wherein the main switch 10 is located in an electrical power supply 11 for the pump 3. The electronic control unit 9 has further inputs and outputs 12, 13, in particular further states of the media supply system being controlled at the inputs.

Sobald der Reedkontakt 7 schließt und an den weiteren Eingängen 12 Zustände anliegen, die ein Einschalten der Pumpe 3 gestatten, wird der Hauptschalter 10 geschlossen, so dass die Pumpe mit Strom versorgt wird. Sobald die Entnahmestelle 5 geschlossen wird, spricht der Strömungswächter nicht länger mehr an, so dass der Hauptschalter 10 wieder öffnet und die Pumpe 3 abgeschaltet wird.As soon as the reed contact 7 closes and 12 states abut the further inputs, which allow the pump 3 to be switched on, the main switch 10 is closed, so that the pump is supplied with current. As soon as the removal point 5 is closed, the flow monitor no longer responds so that the main switch 10 opens again and the pump 3 is switched off.

Zur Stromversorgung der elektronischen Steuerung ist ein Tiefsetzsteller 15 vorgesehen.To power the electronic control a buck converter 15 is provided.

Der Stromverbrauch des Schaltautomaten 8 liegt in Stand-by-Betrieb unter 500 mA und typischerweise bei 200 mA.The power consumption of the switch 8 is in standby mode below 500 mA and typically 200 mA.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
SpeicherStorage
22
zulaufleitungtapered line
33
Pumpepump
44
Medienleitungmedia line
55
Entnahmestellesampling point
66
Strömungswächterflow Switch
77
Reedkontaktreed contact
88th
SchaltautomatenShifters
99
Steuerungcontrol
1010
Hauptschaltermain switch
1111
Stromversorgungpower supply
1212
Eingängeinputs
1313
Ausgängeoutputs
1414
Transformatortransformer
1515
TiefsetzstellerBuck converter

Claims (2)

Schaltautomat für eine Pumpensteuerung mit einem Hauptschalter (10) für einen eine Pumpe (3) mit elektrischen Strom versorgenden Hauptstromkreis, mit einem Strömungswächter (6) an der von der Pumpe (3) versorgte Medienleitung (4) und mit einem Nebenschalter, der von dem Strömungswächter (6) betätigbar ist, wobei der Nebenschalter Teil einer elektronischen Steuerung (9) zur Betätigung des Hauptschalters (10) ist, dadurch gekennzeichnet, dass die Stromversorgung für die Steuerung (9) aus einem Schaltregler besteht, der ein Tiefsetzsteller (15) ist.Automatic switch for pump control, comprising a main switch (10) for a main circuit supplying a pump (3) with a flow monitor (6) to the medium line (4) supplied by the pump (3) and a secondary switch provided by the pump Flow switch (6) is operable, wherein the sub-switch part of an electronic control (9) for actuating the main switch (10), characterized in that the power supply for the controller (9) consists of a switching regulator, which is a buck converter (15) , Schaltautomat nach Anspruch 1, dadurch gekennzeichnet, dass das Stellglied ein Magnet ist und der Nebenschalter ein Reedkontakt (7) ist.Automatic switch according to claim 1, characterized in that the actuator is a magnet and the auxiliary switch is a reed contact (7).
EP14004023.9A 2013-12-17 2014-11-28 Automatic switch for a pump control system Withdrawn EP2891802A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201320011190 DE202013011190U1 (en) 2013-12-17 2013-12-17 Automatic switch for a pump control

Publications (1)

Publication Number Publication Date
EP2891802A1 true EP2891802A1 (en) 2015-07-08

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EP14004023.9A Withdrawn EP2891802A1 (en) 2013-12-17 2014-11-28 Automatic switch for a pump control system

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EP (1) EP2891802A1 (en)
DE (1) DE202013011190U1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4507053A (en) * 1982-06-15 1985-03-26 Frizzell Marvin L Pump off control
DE19908156A1 (en) 1999-02-25 2000-08-31 Heatec Thermotechnik Gmbh Water switch, especially for detecting water flows, has sensor element mounted outside internal vol. in passage that reacts to displacements of magnet on membrane dividing vol.
US20080286134A1 (en) * 2007-05-16 2008-11-20 Steven Regalado Submersible pumping systems and methods for deep well applications
EP2290240A2 (en) * 2009-09-01 2011-03-02 Hans Georg Hagleitner Pump with power supply regulator
WO2012151466A2 (en) * 2011-05-05 2012-11-08 Arctic Sand Technologies, Inc. Dc-dc converter with modular stages

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4507053A (en) * 1982-06-15 1985-03-26 Frizzell Marvin L Pump off control
DE19908156A1 (en) 1999-02-25 2000-08-31 Heatec Thermotechnik Gmbh Water switch, especially for detecting water flows, has sensor element mounted outside internal vol. in passage that reacts to displacements of magnet on membrane dividing vol.
US20080286134A1 (en) * 2007-05-16 2008-11-20 Steven Regalado Submersible pumping systems and methods for deep well applications
EP2290240A2 (en) * 2009-09-01 2011-03-02 Hans Georg Hagleitner Pump with power supply regulator
WO2012151466A2 (en) * 2011-05-05 2012-11-08 Arctic Sand Technologies, Inc. Dc-dc converter with modular stages

Also Published As

Publication number Publication date
DE202013011190U1 (en) 2014-03-19

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