EP0789369A1 - Dispositif de commande pour vannes magnétiques monostables - Google Patents

Dispositif de commande pour vannes magnétiques monostables Download PDF

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Publication number
EP0789369A1
EP0789369A1 EP97101435A EP97101435A EP0789369A1 EP 0789369 A1 EP0789369 A1 EP 0789369A1 EP 97101435 A EP97101435 A EP 97101435A EP 97101435 A EP97101435 A EP 97101435A EP 0789369 A1 EP0789369 A1 EP 0789369A1
Authority
EP
European Patent Office
Prior art keywords
voltage
microcontroller
solenoid valve
pulse
generated
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Withdrawn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
EP97101435A
Other languages
German (de)
English (en)
Inventor
Hans-Peter Rudrich
Günter Kolbert
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.)
Grohe Water Technology AG and Co KG
Original Assignee
Friedrich Grohe Armaturenfabrik GmbH and Co
Friedrich Grohe AG
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 Friedrich Grohe Armaturenfabrik GmbH and Co, Friedrich Grohe AG filed Critical Friedrich Grohe Armaturenfabrik GmbH and Co
Publication of EP0789369A1 publication Critical patent/EP0789369A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F7/1844—Monitoring or fail-safe circuits
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/05—Arrangements of devices on wash-basins, baths, sinks, or the like for remote control of taps

Definitions

  • the invention relates to a device and a method for operating one or more monostable solenoid valves, in particular for non-contact controlled sanitary fittings.
  • Monostable solenoid valves are characterized in that the solenoid of the system must be permanently energized in order to maintain the open position of the valve. Another characteristic of such actuator systems is that the energy required to open the valve (plunger movement) is significantly higher than the energy required to maintain the open state (holding the plunger in the open position).
  • the valve manufacturer must take into account that the inductance and DC resistance For a given nominal operating voltage, the active power of the magnet system (plunger movement) is sufficient to move the plunger safely into the open position even under unfavorable operating conditions (e.g. maximum operating pressure, high medium temperature, aging or deposits, wear).
  • the magnet systems (and thus the inductance and effective resistance) of this valve type are dimensioned in such a way that a safe opening of the valve is guaranteed even when the system is operating at the lower tolerance limit of the nominal operating voltage.
  • the magnet systems are very useful generously dimensioned, on the other hand, they are very sensitive with regard to operation at overvoltage.
  • the magnet coils of such systems are therefore - depending on the system or their function - inevitably always adapted to the respective supply voltage (operating voltage) of the system.
  • monostable solenoid valves are used to control the water supply. In most cases, these are operated with direct current. Because of operational safety, the voltage range is between 6 and 30 volts. If these fittings are operated on the AC network, a suitable transformer must be connected will. The rectification of the current takes place by means of an electronic circuit. If these fittings are connected to an existing low-voltage network, the solenoid of the valve must be matched to the voltage range. Since there are various low-voltage networks (direct or alternating current) in the field, the solenoid valve would have to be matched to the network each time. This results in a variety of products. Another disadvantage of the monostable valves is that they are continuously flowed through with current in the open position.
  • the coil can become very hot and burn the winding. Since these solenoid valves in the magnetic circuit (coil) are designed so that the valve can be opened even under unfavorable operating conditions (maximum operating pressure, medium temperature, aging), an unnecessarily large amount of energy is converted in the solenoid coil after the actual opening process.
  • the coil of the solenoid valve used must therefore be adapted to the respective operating voltage, for example to rule out damage to the system due to overheating.
  • the invention has for its object to provide a device and a method for operating monostable solenoid valves with different, electrical supply voltage. This object is achieved with the device features of claim 1 and with the method features of claim 6.
  • the energy requirement for operating a monostable solenoid valve can be reduced to the absolutely necessary minimum and on the other hand a safe operation of a monostable solenoid valve in a wide supply voltage range is made possible without adaptation / modification of the solenoid coil.
  • the energy for the magnetic coil for the opening process (tightening energy) and the energy for maintaining the open position (holding energy) can be designed differently, the tightening energy and the holding energy being controlled according to the current operating voltage (level of the supply voltage).
  • the monostable solenoid valve no longer has to be adapted to the given operating voltage with regard to the solenoid coil.
  • the monostable solenoid valve can thus be operated in a wide voltage range without disadvantages in functionality.
  • the proposed measures ensure that the power consumption of monostable solenoid valves can be optimized (minimized) while at the same time improving functional reliability. Voltage fluctuations (mains voltage failures) are corrected using the proposed valve control.
  • the magnet system can be designed in a simpler (cheaper) manner. Furthermore, there is no risk of the magnetic coil overheating when operating on overvoltage.
  • the power supply (transformer) for the control circuit and the actuator for the valve control can be dimensioned smaller with respect to the nominal power (factor 1/10). They are therefore cheaper to manufacture, or more solenoid valves can be operated per power supply unit or transformer or actuator.
  • the control for a sanitary fitting consists of a voltage supply 1, which is connected on the input side to an AC network (U ⁇ ), a microcontroller 4, an infrared light sensor system 5 with transmitter 51 and receiver 52, an actuator 2 and a monostable solenoid valve 3.
  • the voltage supply 1 supplies the rectified, but not stabilized, operating voltage U B for the solenoid valve 3 and the stabilized direct voltage U S for supplying the microcontroller 4 on the output side.
  • the microcontroller 4 itself is - possibly via a voltage divider - also with the U B output of the voltage supply 1 connected so that he can always determine the currently available operating voltage for the solenoid valve 3, for example by means of an on-chip ADC.
  • the microcontroller 4 controls the actuator 2, which in the simplest case can be designed as a switching transistor, by means of a pulse-width-modulated signal (SIGNAL).
  • SIGNAL pulse-width-modulated signal
  • the effective value of the control energy for the solenoid valve 3 for the hold state is directly proportional to the pulse / pause ratio (degree of modulation) ⁇ 1 / T or ⁇ 2 / T, the control power during the opening phase, however, is proportional to the control times t A1 and t A2 of the Control signal SIGNAL.
  • This provides a regulation for both the pull-in pulse energy and the holding energy, which allows the solenoid valve to be used within a wide voltage range, regardless of the actual nominal operating voltage of the solenoid, or to ensure safe operation of the valve even when the operating voltage fluctuates greatly and at the same time to minimize the energy for controlling the solenoid valve.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Power Engineering (AREA)
  • Magnetically Actuated Valves (AREA)
EP97101435A 1996-02-08 1997-01-30 Dispositif de commande pour vannes magnétiques monostables Withdrawn EP0789369A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19604579 1996-02-08
DE1996104579 DE19604579A1 (de) 1996-02-08 1996-02-08 Ansteuereinrichtung für monostabile Magnetventile

Publications (1)

Publication Number Publication Date
EP0789369A1 true EP0789369A1 (fr) 1997-08-13

Family

ID=7784854

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97101435A Withdrawn EP0789369A1 (fr) 1996-02-08 1997-01-30 Dispositif de commande pour vannes magnétiques monostables

Country Status (2)

Country Link
EP (1) EP0789369A1 (fr)
DE (1) DE19604579A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000012830A1 (fr) * 1998-08-26 2000-03-09 Eco-Logic (Uk) Emps Limited Unite de commande pour vannes de regulation de fluide
CN101551035B (zh) * 2009-04-01 2010-11-03 上海科勒电子科技有限公司 电磁阀控制系统

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006055835A1 (de) * 2006-11-16 2008-05-21 Löcher, Thomas, Dr. Verfahren und Vorrichtung zum Schalten elektromagnetischer Schaltelemente mit konstanter elektrischer Gleichspannung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2568715A1 (fr) * 1984-08-03 1986-02-07 Telemecanique Electrique Dispositif de commande d'une bobine d'electroaimant et appareil electrique de commutation equipe d'un tel dispositif
EP0532298A1 (fr) * 1991-09-12 1993-03-17 Norgren Martonair Limited Solenoide pour plusieurs tensions
DE4420333A1 (de) * 1994-06-10 1995-12-14 Grohe Armaturen Friedrich Ansteuerung eines batteriebetriebenen, bistabilen Servo-Magnetventils

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2568715A1 (fr) * 1984-08-03 1986-02-07 Telemecanique Electrique Dispositif de commande d'une bobine d'electroaimant et appareil electrique de commutation equipe d'un tel dispositif
EP0532298A1 (fr) * 1991-09-12 1993-03-17 Norgren Martonair Limited Solenoide pour plusieurs tensions
DE4420333A1 (de) * 1994-06-10 1995-12-14 Grohe Armaturen Friedrich Ansteuerung eines batteriebetriebenen, bistabilen Servo-Magnetventils

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000012830A1 (fr) * 1998-08-26 2000-03-09 Eco-Logic (Uk) Emps Limited Unite de commande pour vannes de regulation de fluide
US6382252B1 (en) 1998-08-26 2002-05-07 Eco-Logic (Uk) Emps Limited Control unit for fluid control valves
CN101551035B (zh) * 2009-04-01 2010-11-03 上海科勒电子科技有限公司 电磁阀控制系统

Also Published As

Publication number Publication date
DE19604579A1 (de) 1997-08-14

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