DE10241303A1 - Water mixing mechanism has electronic controller which adjusts hot and cold supply valves to provide water at desired temperature using temperature and flow rate sensor values - Google Patents
Water mixing mechanism has electronic controller which adjusts hot and cold supply valves to provide water at desired temperature using temperature and flow rate sensor values Download PDFInfo
- Publication number
- DE10241303A1 DE10241303A1 DE2002141303 DE10241303A DE10241303A1 DE 10241303 A1 DE10241303 A1 DE 10241303A1 DE 2002141303 DE2002141303 DE 2002141303 DE 10241303 A DE10241303 A DE 10241303A DE 10241303 A1 DE10241303 A1 DE 10241303A1
- Authority
- DE
- Germany
- Prior art keywords
- water
- cold
- temperature
- inflow
- hot 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.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0091—For recording or indicating the functioning of a valve in combination with test equipment by measuring fluid parameters
-
- 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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Control Of Temperature (AREA)
Abstract
Description
Die Erfindung betrifft eine Wassermischeinrichtung mit einem Kaltwasserzufluss, einem Warmwasserzufluss und einem Mischwasserabfluss, wobei im Kalt- und Warmwasserzufluss jeweils ein elektrisch stellbares Zuflussventil vorgesehen ist, deren Stellglieder mit einer elektrischen Steuereinrichtung und wenigstens einer Vorwähleinrichtung für den Sollwert der Mischwassertemperatur zusammengeschaltet sind.The invention relates to a water mixing device with a cold water inflow, a hot water inflow and a mixed water outflow, an electrically adjustable one in the cold and hot water inflows Inflow valve is provided, the actuators with an electrical Control device and at least one preselection device for the setpoint the mixed water temperature are interconnected.
Eine derartige Wassermischeinrichtung
ist z.B. aus der Druckschrift
Der Erfindung liegt die Aufgabe zugrunde, eine verbesserte Wassermischeinrichtung sowie ein Verfahren zur Steuerung der Zuflussventile der Wassermischeinrichtung vorzuschlagen, so dass ein Schwingen der Mischwassertemperatur weitgehend vermieden werden kann.The invention is based on the object an improved water mixing device and a method for Propose control of the inflow valves of the water mixing device, so that a swing of the mixed water temperature largely avoided can be.
Diese Aufgabe wird mit einer im Anspruch 1 angegebenen Wassermischeinrichtung und mit einem im Anspruch 5 angegebenen Verfahren zur Ventilsteuerung gelöst. Weitere Ausgestaltungen der Erfindung sind in den Ansprüchen 2 bis 4 und 6,7 angegeben.This task is claimed by one 1 specified water mixing device and with one in claim 5 specified procedure for valve control solved. Other configurations of the invention are in the claims 2 to 4 and 6.7 indicated.
Mit den erfindungsgemäßen Maßnahmen wird vorgeschlagen, die Mischwassertemperatur in der Wassermischeinrichtung über die in der Richmannschen Mischungsregel dargestellten Abhängigkeiten zu steuern. Hiermit können. Schwingungsprobleme bei der Mischwassertemperatur weitgehend ausgeschaltet werden.With the measures according to the invention it is proposed to use the mixed water temperature in the water mixing device dependencies shown in Richmann's mixing rule to control. With this you can. Vibration problems with the mixed water temperature are largely eliminated.
Nach der Richmannschen Mischungsregel lässt sich die Mischtemperatur tmisch, die sich beim Mischen zweier Stoffe der Massen m1 und m2 der spezifischen Wärmen c1 und c2 und der Temperaturen t1 und t2 einstellt, mit folgender Gleichung bestimmen. Überträgt man diese Gleichung auf die Mischung von Durchflussmengen pro Zeiteinheit von Kaltwasser V kalt, tkalt, und Warmwasser V warm, twarm, so erhält man folgende Beziehung: According to Richmann's rule of mixing, the mixing temperature t, which is obtained when two substances with masses m 1 and m 2 of specific heat c 1 and c 2 and temperatures t 1 and t 2 are mixed , can be mixed with the following equation determine. If one transfers this equation to the mixture of flow rates per unit time of cold water V cold , t cold , and hot water V warm , t warm , the following relationship is obtained:
Wird eine bestimmte Mischwassertemperatur gewünscht, so kann diese bei bekannten Vorlauftemperaturen von Kaltwasser tkalt und Warmwasser twarm über die Einstellung des Volumenstromverhältnisses von Kaltwasser V kalt zu Warmwasser V warm eingestellt werden. Durch Umformung der Gleichung (2) erhält man If a certain mixed water temperature is desired, this can be set at known flow temperatures of cold water t cold and hot water t warm by setting the volume flow ratio of cold water V cold to hot water V warm . By transforming equation (2) one obtains
Aufgrund der Gleichung (3) kann das Verhältnis der Zuflussmengen von Kaltwasser V kalt und Warmwasser V warm bestimmt werden The ratio of the inflow amounts of cold water V cold and hot water V warm can be determined on the basis of equation (3)
Setzt man die Gleichung (5) in die Gleichung (2) ein, so erhält man Substituting equation (5) into equation (2), we get
Alle Elemente der vorstehenden Gleichungen lassen sich von Sensoren in dem Kaltwasserzufluss und dem Warmwasserzufluss ermitteln oder ergeben sich aus den in den Gleichungen dargestellten Zusammenhängen.All elements of the above equations can be from sensors in the cold water inflow and the hot water inflow determine or result from those shown in the equations Contexts.
Das erfindungsgemäße System für die Steuerung der Mischwassertemperatur kann sowohl für eine zentrale Mischwasserbereitungseinrichtung mit separaten Wasserzapfstellen als auch zur Steuerung der Mischwassertemperatur und der Mischwassermenge für einen oder mehrere Verbraucher eingesetzt werden.The system according to the invention for controlling the mixed water temperature can be used for both a central mixed water preparation facility with separate water taps as well as to control the mixed water temperature and the mixed water quantity for one or multiple consumers are used.
Die erfindungsgemäße Steuerung der Mischwassertemperatur kann außerdem durch einen stromabwärts im Mischwasserbereich angeordneten Temperatursensor zu einem geschlossenen Regelkreis erweitert werden.The control of the mixed water temperature according to the invention can also through a downstream in the mixed water area arranged temperature sensor to a closed Control loop to be expanded.
Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden im Folgenden näher beschrieben. Es zeigt in der ZeichnungEmbodiments of the invention are shown in the drawing and are described in more detail below. It shows in the drawing
Die in
Im Kaltwasserzufluss
Zur Steuerung der Zuflussventile
Nachdem an der Vorwähleinrichtung
Nach dem Öffnen von mindestens einem
der nachgeschalteten Zapfventile
Während
der Abgabe von Mischwasser werden die Volumenströme und die Temperaturen des
zuströmenden
Kaltwassers V
kalt, tkalt und
Warmwassers V
warm, twarm fortlaufend
von den Sensoren
Das in
Das in
Mit dieser Einrichtung wird beispielsweise sichergestellt, wenn aufgrund der Druckverhältnisse der notwendige Warmwasserdurchfluss nicht erreicht werden kann, dass der Kaltwasserdurchfluss so reduziert wird, dass das für die gewählte Mischwassertemperatur erforderliche Verhältnis von Warm- zu Kaltwasserdurchfluss wieder dem errechneten Wert entspricht.With this facility, for example ensured when the necessary hot water flow due to the pressure conditions cannot be achieved that the cold water flow is reduced so that that for the chosen one Mixed water temperature required ratio of hot to cold water flow again corresponds to the calculated value.
Die vorstehend in den Ausführungsbeispielen
beschriebenen Steuerungen der Wassermischeinrichtungen können durch
Zuordnung eines Temperatursensors im Mischwasserabfluss
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2002141303 DE10241303A1 (en) | 2002-09-04 | 2002-09-04 | Water mixing mechanism has electronic controller which adjusts hot and cold supply valves to provide water at desired temperature using temperature and flow rate sensor values |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2002141303 DE10241303A1 (en) | 2002-09-04 | 2002-09-04 | Water mixing mechanism has electronic controller which adjusts hot and cold supply valves to provide water at desired temperature using temperature and flow rate sensor values |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10241303A1 true DE10241303A1 (en) | 2004-03-18 |
Family
ID=31724429
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2002141303 Ceased DE10241303A1 (en) | 2002-09-04 | 2002-09-04 | Water mixing mechanism has electronic controller which adjusts hot and cold supply valves to provide water at desired temperature using temperature and flow rate sensor values |
Country Status (1)
Country | Link |
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DE (1) | DE10241303A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITBS20090041A1 (en) * | 2009-03-10 | 2010-09-11 | Nuova Galatron Srl | THERMOSTATIC SYSTEM WITH ELECTRONIC CONTROL FOR THE MIXING OF HOT AND COLD WATER |
WO2012118721A1 (en) | 2011-02-28 | 2012-09-07 | Smartap A.Y Ltd | Household electronic mixing-valve device |
DE102020120839A1 (en) | 2020-08-07 | 2022-02-10 | Audi Aktiengesellschaft | Temperature control device with a reduced number of temperature sensors |
DE102020120844A1 (en) | 2020-08-07 | 2022-02-10 | Audi Aktiengesellschaft | Temperature control device with pre-control and regulation |
WO2024110207A1 (en) * | 2022-11-21 | 2024-05-30 | Grohe Ag | Sanitary fitting and method for operating a sanitary fitting |
-
2002
- 2002-09-04 DE DE2002141303 patent/DE10241303A1/en not_active Ceased
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITBS20090041A1 (en) * | 2009-03-10 | 2010-09-11 | Nuova Galatron Srl | THERMOSTATIC SYSTEM WITH ELECTRONIC CONTROL FOR THE MIXING OF HOT AND COLD WATER |
WO2010103560A1 (en) * | 2009-03-10 | 2010-09-16 | Nuova Galatron S.R.L. | Thermostatic system with electronic control for mixing hot and cold water |
WO2012118721A1 (en) | 2011-02-28 | 2012-09-07 | Smartap A.Y Ltd | Household electronic mixing-valve device |
DE102020120839A1 (en) | 2020-08-07 | 2022-02-10 | Audi Aktiengesellschaft | Temperature control device with a reduced number of temperature sensors |
DE102020120844A1 (en) | 2020-08-07 | 2022-02-10 | Audi Aktiengesellschaft | Temperature control device with pre-control and regulation |
DE102020120839B4 (en) | 2020-08-07 | 2024-05-16 | Audi Aktiengesellschaft | Temperature control device with reduced number of temperature sensors |
WO2024110207A1 (en) * | 2022-11-21 | 2024-05-30 | Grohe Ag | Sanitary fitting and method for operating a sanitary fitting |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8127 | New person/name/address of the applicant |
Owner name: GROHE AG, 58675 HEMER, DE |
|
8110 | Request for examination paragraph 44 | ||
8131 | Rejection |