DE2614509A1 - Electronic water temp. control circuit - uses temp. sensor difference signal mixed with timing pulse in control amplifier to actuate solenoid operated mixing valves - Google Patents
Electronic water temp. control circuit - uses temp. sensor difference signal mixed with timing pulse in control amplifier to actuate solenoid operated mixing valvesInfo
- Publication number
- DE2614509A1 DE2614509A1 DE19762614509 DE2614509A DE2614509A1 DE 2614509 A1 DE2614509 A1 DE 2614509A1 DE 19762614509 DE19762614509 DE 19762614509 DE 2614509 A DE2614509 A DE 2614509A DE 2614509 A1 DE2614509 A1 DE 2614509A1
- Authority
- DE
- Germany
- Prior art keywords
- temperature
- temp
- timing pulse
- difference signal
- mixed water
- 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- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/01—Control of temperature without auxiliary power
- G05D23/13—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures
- G05D23/1393—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures characterised by the use of electric means
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Temperature (AREA)
Abstract
Description
Verfahren zur Steuerung der MischwassertemperaturMethod for controlling the mixed water temperature
bei Mischarmaturen mit zwei Magnetventilen Die Erfindung bezieht sich auf ein Verfahren zur Steuerung der Mischwassertemperatur bei Mischarmaturer, mit zwei an die Kaltwasserzuleitung und die Warmwasserzuleitung angeschlossenen Magnetventilen, die in eine Mischkammer fördern, in der die Mischwassertemperatur durch einen Fühler überwacht wird, der über einen Regler, z.B. eine Wheatstone-Brücke, die gemessene Temperatur mit einer verstellbaren Solltemperatur vergleicht.in mixer taps with two solenoid valves The invention relates to on a method for controlling the mixed water temperature in mixer taps, with two solenoid valves connected to the cold water supply and the hot water supply, which convey into a mixing chamber in which the mixed water temperature is measured by a sensor is monitored, which is controlled by a controller, e.g. a Wheatstone bridge, the measured Comparing the temperature with an adjustable target temperature.
Bekannt ist ein Verfahren dieser Art, bei dem der Hub des Magnetventils entsprechend einer erfühlten Temperatur des Mischwassers eingestellt wird. Dieses Verfahren ist mit einem erheblichen baulichen Aufwand verbunden.A method of this type is known in which the stroke of the solenoid valve is set according to a sensed temperature of the mixed water. This The procedure is associated with considerable structural effort.
Ferner ist eine Mischbatterie bekannt, bei welcher ein mit einem Ausdehnungskörper verbundener Temperaturfühl er einen zweipoligen Schalter steuert, der in seiner einen Schaltstellung die Zugspule des Kaltwasserventils einschaltet, wobei die Zugspule des Warmwasserventils ausgeschaltet ist, sodaß dem Auslauf abwechselnd heißes und kaltes Wasser zufließt. Dieses Verfahren ist nur brauchbar, wenn eine große Mischkammer zur Verfügung steht. Ohne eine solche wäre ein Waschen unter dem Auslauf unmöglich, weil abwechselnd zu kaltes oder zu heißes Wasser ausfließen würde.Furthermore, a mixer tap is known in which a with an expansion body connected temperature sensor has a two-pole Switch controls, which switches on the pull coil of the cold water valve in its one switching position, wherein the pull coil of the hot water valve is switched off, so that the outlet alternately hot and cold water flows in. This procedure is only useful if a large mixing chamber is available. Without such a wash would be under the No leakage because water that is too cold or too hot would flow out alternately.
Aufgabe der Erfindung ist es, ein einfaches Verfahren vorzuschlagen, welches die Nachteile erheblicher Temperaturschwankungen im Auslauf vermeidet und mit einfachen handelsüblichen Magnetventilen und elektronischen Steuerelementen durchführbar ist.The object of the invention is to propose a simple method which avoids the disadvantages of considerable temperature fluctuations in the outlet and with simple commercially available solenoid valves and electronic control elements is feasible.
Diese Aufgabe wird dadurch gelöst, daß die analog auftretende Soll-Ist-Temperatu rdifferenz des Mischwassers mittels eines an sich bekannten Operationsverstärkers in ein binäres Ausgangssignal umgewandelt wird, derart, daß die Magnetventile gegensinnig öffnen und schließen. Auf diese Weise ist ein verhältnismäßig schnell reagierendes Regelsystem geschaffen, das größere Temperaturdifferenzen am Auslauf ausschließt.This object is achieved in that the target / actual temperature, which occurs analogously rdifference of the mixed water by means of an operational amplifier known per se is converted into a binary output signal in such a way that the solenoid valves operate in opposite directions open and close. This is a relatively quick response Control system created that excludes larger temperature differences at the outlet.
In weiterer Ausgestaltung der Erfindung wird die analog auftretende Soll-Ist-Differenz der Mi schwassertemperatur einer gesondert erzeugten asymmetrischen Rechteckschwingung aufmodul iert, derart, daß der schmale Rechteckimpuls nach Einspeisen in den eigentlichen Regler analog der vom Fühler erfaßten Temperatur zeitlich bestimmt wird.In a further embodiment of the invention, the analogous occurrence is used Target / actual difference of the Mi water temperature of a separately generated asymmetrical Square wave modulated in such a way that that the narrow square pulse after feeding into the actual controller analogous to the temperature recorded by the sensor is timed.
Nunmehr ist die Regelung der Auslauftemperatur praktisch trägheitslos und ohne Übersteuern möglich.The regulation of the outlet temperature is now practically inert and possible without oversteering.
Die Erfindung wird nachstehend an Hand der Zeichnung näher erläutert.The invention is explained in more detail below with reference to the drawing.
Es zeigen Fig. 1 den Wasserplan Fig. 2 den Stromplan für die Schaltung der Magnetventile Fig. 3 eine Alternative zu Fig. 2 Fig. 4 den elektronischen Schaltplan Nach dem Wasserplan Fig. 1 ist in den Zulauf des kalten und des warmen Wassers je ein Magnetventil 1 bzw. 2 eingeschaltet, deren Ausläufe an eine Mischkammer 3 angeschlossen sind, aus der der Auslauf 4 ausmündet. Die Zugspulen der beiden Magnetventile sind mit M 1 und M 2 bezeichnet. Die Wassertemperatur in der Mischkammer wird durch einen Fühler F überwacht.1 shows the water plan. FIG. 2 shows the current plan for the circuit the solenoid valves Fig. 3 an alternative to Fig. 2 Fig. 4 the electronic circuit diagram According to the water plan Fig. 1 is in the inflow of cold and warm water each a solenoid valve 1 or 2 switched on, the outlets of which are connected to a mixing chamber 3 are, from which the outlet 4 opens. The pull coils of the two solenoid valves are denoted by M 1 and M 2. The water temperature in the mixing chamber is controlled by a Sensor F monitors.
Nach dem Stromplan Fig. 2 sind die beiden Zugspulen M 1 und M 2 durch einen Wechselschalter 5 wechselweise einschaltbar, der mit einer Relais-Spule R betätigt wird.According to the circuit diagram of FIG. 2, the two pull coils M 1 and M 2 are through a changeover switch 5 can be switched on alternately, which is connected to a relay coil R is operated.
Dem Schalter 5 ist ein Ein- und Ausschalter 6 nachgeordnet, der nach Fig. ° von Hand betätigt wird.The switch 5 is followed by an on and off switch 6, which after Fig. ° is operated by hand.
In Fig. 3 ist gezeigt, daß der Schalter 6 anstatt von Hand auch berührungslos, z.B. durch einen opto-elektronischen Schalter 7 über ein Relais R 1 einschaltbar ist, wobei der für die Opto-Elektronik bereits vorhandene Stromversorgungsteil gleich mit zur Durchführung des Erfindungsgedankens des Gegenstandes der vorliegenden Anmeldung benutzt wird. Ein eigenes Stromversorgungsteil wird so eingespart.In Fig. 3 it is shown that the switch 6 instead of by hand is also contactless, e.g. can be switched on by an opto-electronic switch 7 via a relay R 1 is, where the power supply part already available for the opto-electronics is the same with to carry out the inventive concept of the subject matter of the present application is used. This saves a separate power supply unit.
Fig. 4 zeigt einen Taktgeber, der im ganzen mit 8 bezeichnet ist, der ein periodisches Rechteck-Signal liefert, das stark asymmetrisch ist und dessen Frequenz mittels eines Potentiometers als Parameter einstellbar ist. Dieses Rechteck-Signal ist für sich herausgezeichnet und mit 9 bezeichnet.Fig. 4 shows a clock, which is designated as a whole with 8, which delivers a periodic square-wave signal that is strongly asymmetrical and its Frequency can be set as a parameter using a potentiometer. This square wave signal is drawn out for itself and labeled 9.
Der Taktgeber speist einen im ganzen mit 10 bezeichneten Regler, der mit dem Fühler F Verbindung hat und auf das Relais R wirkt. Der Temperatur-Sollwert ist an einem Potentiometer 11 einstellbar.The clock feeds a regulator designated as a whole by 10, which has a connection with the sensor F and acts on the relay R. The temperature setpoint can be set on a potentiometer 11.
Das Ausgangs-Signal des Reglers 10, das für sich herausgezeichnet und mit 12 bezeichnet ist, stellt ein aus dem Ausgangs-Signal 9 des Taktgebers 8 durch Vergleich der von Fühler F erfühlten Ist-Temperatur mit der an dem Potentiometer eingestellten Soll-Temperatur gewonnenes moduliertes Ausgangs-Signal dar.The output signal of the controller 10, which stands out for itself and is designated by 12, represents one of the output signal 9 of the clock generator 8 by comparing the actual temperature sensed by sensor F with that on the potentiometer represents the modulated output signal obtained from the set target temperature.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19762614509 DE2614509A1 (en) | 1976-04-03 | 1976-04-03 | Electronic water temp. control circuit - uses temp. sensor difference signal mixed with timing pulse in control amplifier to actuate solenoid operated mixing valves |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19762614509 DE2614509A1 (en) | 1976-04-03 | 1976-04-03 | Electronic water temp. control circuit - uses temp. sensor difference signal mixed with timing pulse in control amplifier to actuate solenoid operated mixing valves |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2614509A1 true DE2614509A1 (en) | 1977-10-13 |
Family
ID=5974399
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19762614509 Withdrawn DE2614509A1 (en) | 1976-04-03 | 1976-04-03 | Electronic water temp. control circuit - uses temp. sensor difference signal mixed with timing pulse in control amplifier to actuate solenoid operated mixing valves |
Country Status (1)
Country | Link |
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DE (1) | DE2614509A1 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2836698A1 (en) * | 1978-08-22 | 1980-03-06 | Hansa Metallwerke Ag | Mixer control for sanitary ware - has electronic circuitry to control each magnetic valve by volumetric flow modulation of supply in both hot and cold water paths |
DE2908147A1 (en) * | 1979-02-23 | 1980-08-28 | Landis & Gyr Ag | ROOM UNIT WITH A PROGRAM AND SETPOINT VALUE AND A ROOM SENSOR OF A WEATHER-GUIDED FLOW TEMPERATURE CONTROLLER FOR A HEATING SYSTEM |
EP0018821A1 (en) * | 1979-04-30 | 1980-11-12 | Eaton Corporation | Temperature control for liquid in a container |
US4383551A (en) * | 1982-02-09 | 1983-05-17 | Quadratec Associates | Anti-hammer device for pulsed liquid-merging system |
US4444357A (en) * | 1982-02-09 | 1984-04-24 | Quadratec Associates | Differing-temperature liquid-mixing apparatus and method using pulsed, duty-cycle temperature control |
DE3137609C1 (en) * | 1980-03-08 | 1984-12-06 | CKD Controls Ltd., Aichi | Device for controlling the gas-flow throughput |
DE3325721A1 (en) * | 1983-07-16 | 1985-01-31 | Danfoss A/S, Nordborg | Device for limiting the return temperature in a hot-water heating installation |
DE3050504C2 (en) * | 1980-07-31 | 1986-01-02 | Ukrainskij naučno-issledovatel'skij institut stankov i instrumentov, Odessa | Device for automatic temperature control |
DE3522344A1 (en) * | 1985-06-22 | 1987-01-02 | Meyer Fa Rud Otto | Method for controlling the temperature of the hot water flowing to consumers connected to a hot water supply system with a circulation line, and hot water supply system for carrying out the method |
-
1976
- 1976-04-03 DE DE19762614509 patent/DE2614509A1/en not_active Withdrawn
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2836698A1 (en) * | 1978-08-22 | 1980-03-06 | Hansa Metallwerke Ag | Mixer control for sanitary ware - has electronic circuitry to control each magnetic valve by volumetric flow modulation of supply in both hot and cold water paths |
DE2908147A1 (en) * | 1979-02-23 | 1980-08-28 | Landis & Gyr Ag | ROOM UNIT WITH A PROGRAM AND SETPOINT VALUE AND A ROOM SENSOR OF A WEATHER-GUIDED FLOW TEMPERATURE CONTROLLER FOR A HEATING SYSTEM |
EP0018821A1 (en) * | 1979-04-30 | 1980-11-12 | Eaton Corporation | Temperature control for liquid in a container |
DE3137609C1 (en) * | 1980-03-08 | 1984-12-06 | CKD Controls Ltd., Aichi | Device for controlling the gas-flow throughput |
DE3050504C2 (en) * | 1980-07-31 | 1986-01-02 | Ukrainskij naučno-issledovatel'skij institut stankov i instrumentov, Odessa | Device for automatic temperature control |
US4383551A (en) * | 1982-02-09 | 1983-05-17 | Quadratec Associates | Anti-hammer device for pulsed liquid-merging system |
US4444357A (en) * | 1982-02-09 | 1984-04-24 | Quadratec Associates | Differing-temperature liquid-mixing apparatus and method using pulsed, duty-cycle temperature control |
DE3325721A1 (en) * | 1983-07-16 | 1985-01-31 | Danfoss A/S, Nordborg | Device for limiting the return temperature in a hot-water heating installation |
DE3522344A1 (en) * | 1985-06-22 | 1987-01-02 | Meyer Fa Rud Otto | Method for controlling the temperature of the hot water flowing to consumers connected to a hot water supply system with a circulation line, and hot water supply system for carrying out the method |
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