EP2218840B1 - Sanitary fitting with joystick control - Google Patents

Description

The present invention relates to a sanitary fitting according to the preamble of patent claim 1.

Sanitary fittings for the outlet of water, especially for the outlet of mixed water mixed with cold water and hot water, are well known. In order to be able to set the outflowing water to a certain mixed water flow rate and a certain mixed water temperature, it is known to provide sanitary fittings with valve devices. These valve devices or valves, which are installed in the valve devices, typically have a cold water connection and a hot water connection on one side and a mixed water outlet on the other side. Such valve means may comprise a hydraulic single-lever mixer, such as in WO 2006/098795 disclosed.

In addition, there are valves that can be controlled by means of an electrical control to open or close them. In this case, a control signal generator for generating an input signal to the controller can be used, wherein the controller controls the valves due to the input signal accordingly.

document WO 2009/019731 A discloses a device for mixing water and regulating the flow rate of service water in hydraulic systems. The apparatus comprises an electronic board or circuits electrically connected to one or more solenoid valves for regulating the flow rate of hot and cold water, the water being delivered to one or more faucets. The relative displacement of one or more magnets in relation to one or more magnetic linear and / or rotational sensors of the electronic circuit generates a potential difference. The potential difference is correspondingly transmitted to the solenoid valves for full / partial hope of this.

document US 2006/186215 A1 discloses a sanitary fitting with control panels, via which the water outlet and / or the temperature can be operated by tapping the control panels. Likewise, a joystick can be used to control the water outlet and / or the temperature of the sanitary fitting by tapping the joystick.

The sanitary fitting, which in WO 2006/098795 discloses a hydraulic single-lever mixer as a valve device to manually adjust the mixed water flow rate and the mixed water temperature. In addition, an electrically controllable valve is installed, which can be operated in two different modes. In one In manual mode, the valve is open and the mixing water flow rate and mixing water temperature are controlled only by the manually operated single lever mixer. In a second mode, the mixed water flow rate and the mixed water temperature are preset by the manually operable single lever mixer, and the electrically controllable valve may be either fully open or fully closed. The controller receives an input signal from a touch or environment sensor when an object (such as a hand) is near the sensor. This input signal causes the controller to send an "on" or "off" flip-flop signal to the valve, which in turn causes the valve to be fully closed or fully opened, and the water flow to be opened or closed accordingly.

An object of the present invention is to provide a sanitary fitting with a control signal generator, wherein both mixing water temperature and water flow rate can be adjusted by means of the control signal generator and the control signal generator is only electrically connected via an electrical control with the valve device. This allows a fine and differentiated control of the mixed water temperature and mixed water flow rate with various possible, implementable in the electronic control, additional functions.

This object is achieved with a sanitary fitting with a control signal generator and an electrical control, which has the features of patent claim 1.

Particularly preferred embodiments are specified in the dependent claims and in the description.

The sanitary fitting with the control signal generator according to the present invention has a cold water connection, a hot water connection and a mixed water outlet. In addition, it is equipped with a valve device. This is connected on the one hand to the hot water connection and the cold water connection and on the other hand to the mixed water outlet. The valve device can merge the cold and the hot water to mixed water, which then flows through the mixed water outlet. By different ratios of cold and hot water shares in the mixed water different mixed water temperatures and mixed water flow rates can be adjusted.

Furthermore, the sanitary fitting includes an electrical control for controlling a valve, wherein the control signal generator can generate an input signal to the controller. In this case, in the present invention, the valve is an integral part of the valve device and the controller controls, in response to the input signal of the control signal generator, the valve device. Thereby, the mixed water temperature and the mixed water flow rate can be adjusted. This design allows a very space-saving design of the control signal transmitter, since it has no direct contact with the water connections and no valve is installed. The setting of both the mixed water temperature and the water flow rate by the user is done exclusively by means of the control signal generator. Since the Control signal generator is connected via an electrical control with the valve device, it is possible to program the controller so that in terms of temperature and quantity finely graduated and differentiated mixed water discharge is possible. In addition, various additional functions can be implemented in the controller, which can be triggered by a corresponding actuation of the control signal generator.

In this embodiment, the input signal includes a water amount plus signal, a water amount minus signal, a temperature plus signal, or a temperature minus signal. In this case, the controller sends a signal to increase the mixing water flow rate due to the receipt of the water quantity plus signal to the valve device. Similarly, due to the receipt of the water amount minus signal to the valve device, the controller sends a signal for reducing the mixed water flow rate, a signal for increasing the mixed water temperature due to the reception of the temperature plus signal, and a signal due to the receipt of the temperature minus signal to reduce the mixed water temperature. This design allows extremely simple operation of the sanitary fitting, which is very intuitive for a user. By this type of signaling and control of the valve device, any mixed water flow rates can be set with any mixing water temperature in a simple manner.

In this embodiment, a temperature memory for storing a mixed water temperature value adjustable by the control signal generator, a mixed water flow memory for storing a current mixed water flow rate, and a timer for storing a time value are incorporated in the controller. These memories allow the logic of the controller to be extended over the simpler variant described above by means of various additional functions which can be triggered by a certain type of operation of the control signal generator, as described below.

In this embodiment, the mixed water flow memory and the temperature memory allow the realization of a controller, which allows a proportional control means of pulse-like input signals from the control signal generator.

The timer serves to compare the duration of the input signal and the time sequence of the input signals with the specifications implemented in the controller. As a result, it is only possible to distinguish a longer input signal from a pulse-like input signal or to evaluate the temporal sequence of pulse-like input signals.

• Eine erste Betätigungsart ist die impulsartige Betätigung, bei welcher der Steuersignalgeber nur für kurze Zeit, beispielsweise für höchstens 0.3 Sekunden, aus seiner neutralen Ruhestellung ausgelenkt wird. In einer zweiten Betätigungsart wird der Steuersignalgeber für längere Zeit, d.h. beispielsweise länger als 0.3 Sekunden, konstant aus seiner neutralen Ruhestellung ausgelenkt. Dabei entspricht dieser Zeitwert jeweils den im Zeitglied gespeicherten Werten für einen Temperatur-Plus-Zeitwert, einen Temperatur-Minus-Zeitwert, einen Wassermenge-Plus-Zeitwert und einen Wassermenge-Minus-Zeitwert.

In principle, two different types of actuation of the control signal generator can be distinguished in this embodiment, both with regard to the control of the mixed water temperature and the flow rate:

• A first type of actuation is the pulse-like actuation, in which the control signal transmitter only for a short time, for example, for a maximum of 0.3 seconds, is deflected from its neutral rest position. In a second type of actuation, the control signal generator is deflected constantly out of its neutral rest position for a longer time, ie, for example, for more than 0.3 seconds. In this case, this time value corresponds in each case to the values stored in the timer for a temperature plus time value, a temperature minus time value, a water quantity plus time value and a water quantity minus time value.

The controller controls the valve device in such a way that, upon receipt of a constant water quantity plus signal, the mixed water flow rate is continuously increased with at least approximately constant temperature according to the mixed water temperature stored in the temperature reservoir. This allows to increase the amount of mixed water slowly and steadily controlled.

In a preferred embodiment, the control signal generator is an electric joystick with an operating lever mounted in a base element. The mounting and technical structure of the joystick is described in more detail in the same applicant's commonly assigned patent application entitled "Plumbing Fitting with a Joint" (Representative Reference A18634EP), which expressly refers to the disclosure of this document.

In a preferred embodiment, the actuating lever has an actuating lever end region which can be deflected from its neutral, preferably central rest position into at least two planes which are at least approximately at right angles to one another. In addition, the base member is provided with at least one sensor to determine the position of the operating lever relative to its neutral rest position and to convert it into the electrical input signal. For this purpose, the base element is preferably equipped with a sensor which cooperates with a sensor end of the actuating lever facing away from the actuating lever end region.

In a particularly preferred embodiment, the actuating lever is equipped at its sensor end with a permanent magnet, which cooperates with Hall sensors, which are fixedly mounted with respect to the base element of the joystick. This construction allows a long life of the operating lever or the joystick assembly, since the construction has only slightly moving parts and rubbing parts and thus the wear is minimized. In addition, a very space-saving design is made possible by the use of Hall sensors and a permanent magnet.

The controller may preferably control the valve device according to claim 5 such that when receiving a constant water quantity minus signal, the mixed water flow rate, with at least approximately constant mixed water temperature according to the temperature stored in the mixed water temperature value, is continuously reduced. This allows to reduce the amount of mixed water slowly and steadily controlled.

The controller may preferably control the valve device according to claim 6 such that when receiving a pulse-like amount of water plus signal, the mixed water flow rate, if the current mixed water flow rate according to the Stored mixed water flow storage value is less than a lower Mischwasserdurchflussgrenzwert, preferably 30%, is increased to this lower Mischwasserdurchflussgrenzwert at least approximately constant mixing water temperature is suddenly increased.

The controller may preferably control the valve device according to claim 7 such that upon receiving a pulse-like water quantity plus signal, if the current mixed water flow is at the lower Mischwasserdurchflußgrenzwert or between the lower Mischwasserdurchflussgrenzwert and a Mischwasserdurchflußgrenzwert, preferably 80%, the Mischwasserdurchflussmenge is increased to the upper mixing water flow rate at at least approximately constant mixed water temperature. As a result, the mixing water flow can be increased suddenly to a value corresponding to the upper mixing water flow limit value.

The combination of the procedure described in claims 6 and 7 allows to increase the mixing water flow in a jerky manner by, for example, a minimum of 0% to the upper mixing water flow limit value by pulsing briefly twice in succession.

The controller may preferably control the valve device according to claim 8 such that upon receipt of a pulse-like water quantity minus signal, the valve is closed without delay so that the mixed water flow rate reaches zero. As a result, a faster, jump-like outflow stop of the mixed water outflow can be effected.

The controller may preferably control the valve device according to claim 9 such that when receiving a constant temperature plus signal, if the current mixed water flow is zero, the mixed water temperature value is continuously increased in the temperature memory until the end of the temperature plus signal or until Mixed water temperature has reached an upper temperature limit. This allows to select the mixed water temperature slowly and steadily increasing.

The controller may preferably control the valve device according to claim 10 such that upon receipt of the constant temperature plus signal, if the current mixed water flow is greater than zero, the mixed water temperature value is continuously increased in the temperature memory until the end of the temperature plus signal or until Mixed water temperature has reached an upper temperature limit. At the same time, the mixed water temperature of the effluent mixed water is adjusted continuously in accordance with the mixed water temperature value, with at least approximately constant mixed water flow rate. This allows the mixing water temperature of the currently flowing mixed water to be increased slowly and steadily in a controlled manner.

The controller may preferably control the valve device according to claim 11 such that upon receipt of the pulse-like temperature plus signal, if the current mixed water flow rate is zero, the mixed water temperature value in the temperature memory is set to the upper temperature limit. This allows to increase the preset mixed water temperature by leaps and bounds.

The controller can preferably control the valve device according to claim 12 such that when receiving the pulse-like temperature plus signal, if the current mixed water flow rate is greater than zero, set the mixed water temperature value in the temperature storage to an upper temperature limit and at the same time the mixed water temperature corresponding to the mixed water temperature value at least approximately constant mixed water flow rate is adjusted. This allows to increase the mixed water temperature of the currently flowing mixed water leaps and bounds.

The controller may preferably control the valve device according to claim 13 such that upon receipt of the constant temperature minus time value, if the current mixed water flow rate is zero, the mixed water temperature value in the temperature memory is continuously reduced until the end of the temperature minus signal or until Mixed water temperature value has reached a lower temperature limit. This makes it possible to select the preset mixed water temperature slowly and continuously decreasing controlled.

The controller may preferably control the valve device according to claim 14 such that upon receipt of the constant temperature minus signal, if the current mixed water flow rate is greater than zero, the mixed water temperature value in the temperature storage is continuously reduced until the end of the temperature minus signal or until Mixed water temperature value has reached a lower temperature limit. At the same time, the mixed water temperature of the effluent mixed water is corresponding, at approx constant mixing water flow rate, continuously adjusted. This allows to slowly and steadily reduce the mixed water temperature of the currently flowing mixed water.

The controller may preferably control the valve device according to claim 15 such that upon receipt of the pulse-like temperature-minus signal, if the current mixed water flow rate is zero, the mixed water temperature value in the temperature memory is set to a lower temperature limit. This allows to rapidly reduce the preset mixed water temperature.

The controller may preferably control the valve device according to claim 16 such that upon receipt of the pulse-like temperature-minus signal, if the current mixed water flow rate is greater than zero, the mixed water temperature value is set to a lower temperature limit. At the same time, the mixed water temperature is adjusted according to the mixed water temperature value with at least approximately constant mixing water flow rate. This allows to suddenly reduce the mixed water temperature of currently flowing mixed water.

Preferably, the increase resp. Reduction of the mixed water temperature when receiving a constant, longer temperature plus input signal or a constant, longer temperature minus input signal continuously along a predetermined first temperature control characteristic, preferably a linear temperature control characteristic with a predetermined slope (in the case of increase with a positive, in the case of reduction, preferably with a magnitude same, but negative slope). Accordingly, the increase resp. Reducing the mixing water flow rate upon receipt of a constant, longer water quantity plus input signal or a constant, longer water quantity minus input signal continuously along a predetermined first water flow control curve, preferably a linear water flow control curve with a predetermined slope (in the case of increase with a positive, in the case the reduction preferably with a magnitude same, but negative slope). Other curves, which increase or decrease continuously, however, are also conceivable for the temperature control characteristic or the water flow control curve.

In contrast to the receipt of a continuous temperature plus or minus temperature input signal, the increase or responds upon receipt of a short, pulse-like temperature plus or minus temperature input signal. Reduction of the mixed water temperature abruptly, in practice preferably along a second linear temperature control characteristic with a magnitude much greater slope compared with the slope of the first temperature control characteristic. Accordingly, in contrast to receiving a continuous amount of water plus or water minus input signal, upon receiving a short, pulse-like amount of water plus or water quantity minus input signal, the increase resp. Reducing the amount of mixed water suddenly, in practice, preferably along a second linear water flow control curve with a in terms of amount much greater slope compared to the slope of the first water flow control curve.

For example, the water flow rate can be varied linearly between 0% and 100% for a pulse-like signal in 0.3 seconds and for a continuous signal in 3 seconds.

For example, the mixed water temperature can be varied linearly between 0% and 100% in 0.5 seconds for a pulse-like signal and 2 seconds in a continuous signal.

In a preferred embodiment, the lower temperature limit corresponds to the temperature of the cold water, which passes through the cold water connection to the valve device. Accordingly, the upper temperature limit value preferably corresponds to the temperature of the warm water which passes through the hot water connection to the valve device.

In a further preferred embodiment of the present invention, one input level in a deflection direction is assigned the input signal water quantity plus signal and in the corresponding counter deflection direction the water quantity minus signal. Correspondingly, the temperature-plus signal is assigned to the other deflection plane in a deflection direction, and the temperature-minus signal is assigned in the corresponding further counter deflection direction. Such an assignment is intuitive and thus allows the user a simple operation of the sanitary fitting.

In a further preferred embodiment, a first valve of the valve device consists of a first Proportional valve, which is connected on its inlet side with the cold water connection and on its outflow side with the mixed water outlet. Accordingly, a second valve of the valve device consists of a second proportional valve, which is connected on its inlet side with the hot water connection and on its outflow side with the mixed water outlet. In this case, the controller controls the first proportional valve with a first electrical control signal and the second proportional valve with a second electrical control signal.

If, for example, the mixing water temperature is to be changed while the mixing water flow rate remains the same, then the first and the second proportional valve are activated in the same way. In this case, the first proportional valve is closed (respectively opened) by a first percentage amount and the second proportional valve is opened (closed) by a second percentage amount so that the mixed water flow rate always remains constant (at least approximately) (ie, the sum of the percentage Openings of the first proportional valve and the second proportional valve must always remain constant).

If, for example, the mixing water flow rate is to be changed while the mixing water temperature remains the same, the first and second proportional valves are activated such that both valves are opened either by a first and a second opening value (in the case of increasing the mixing water flow rate) or by a first and a second closing value closed (in the case of a Reducing the mixing water flow rate). In this case, however, the opening ratio of the first to the second proportional valve must always remain constant in order to keep the mixed water temperature at an - approximately constant - temperature value.

In a further preferred embodiment, a light source, preferably a light-emitting diode (LED), is attached to the sanitary fitting. This is controlled by the electrical control so that it emits a light in different colors depending on the selected respectively stored mixed water temperature value. This allows the user of the sanitary fitting in a simple and intuitive way visually recognize which mixed water temperature is set. Thus, accidents, such as burns, avoided by too hot set mixed water.

In a particularly preferred embodiment, the light-emitting diode is attached to the control signal generator, which can suggest to the user a direct optical relationship between control signal input and mixed water temperature and thus facilitates the operation of the sanitary fitting.

The temperature minus time value, the temperature plus time value, the water amount minus time value, and the water amount plus time value may have different values. In a preferred embodiment, however, these values are all the same, preferably 0.3 seconds.

Fig. 1

eine Sanitärarmatur aufweisend einen als Joystick ausgebildeten Steuersignalgeber, eine elektrische Steuerung verbunden mit dem Joystick und einer Ventileinrichtung, welche einen Kaltwasser- und einen Warmwasseranschluss und einen Mischwasserauslass beinhaltet, wobei der Mischwasserauslass mit einem Wasserauslassrohr verbunden ist;

Fig. 2

die elektrische Steuerung beinhaltend eine Stromversorgung, wobei die Steuerung Inputsignale vom Steuersignalgeber empfängt und an die Ventileinrichtung und eine Lichtquelle Signale aussendet;

Fig. 3a

ein erstes Beispiel eines Mischwassertemperaturverlaufs in Abhängigkeit von verschiedenen Inputsignalen;

Fig. 3b

ein zweites Beispiel eines Mischwassertemperaturverlaufs in Abhängigkeit von verschiedenen Inputsignalen;

Fig. 3c

ein drittes Beispiel eines Mischwassertemperaturverlaufs in Abhängigkeit von verschiedenen Inputsignalen;

Fig. 4a

ein erstes Beispiel eines Mischwassermengedurchflussverlaufs in Abhängigkeit von verschiedenen Inputsignalen;

Fig. 4b

ein zweites Beispiel eines Mischwassermengedurchflussverlaufs in Abhängigkeit von verschiedenen Inputsignalen.

The invention will be explained with reference to an embodiment shown in the drawing. It shows purely schematically:

Fig. 1

a sanitary fitting comprising a control signal transmitter designed as a joystick, an electrical controller connected to the joystick and a valve device which includes a cold water and a hot water connection and a mixed water outlet, wherein the mixed water outlet is connected to a water outlet pipe;

Fig. 2

the electrical controller includes a power supply, the controller receiving input signals from the control signal generator and sending signals to the valve means and a light source;

Fig. 3a

a first example of a mixed water temperature curve as a function of different input signals;

Fig. 3b

a second example of a mixed water temperature curve as a function of different input signals;

Fig. 3c

a third example of a mixed water temperature curve as a function of various input signals;

Fig. 4a

a first example of a mixing water flow path in response to various input signals;

Fig. 4b

a second example of a mixing water flow path as a function of various input signals.

FIG. 1 schematically shows a possible embodiment of a sanitary fitting according to the invention 10. The sanitary fitting 10 has a valve device 12 which is connected on one side with a cold water connection 14 and a hot water connection 16 and on the other side with a mixed water outlet 18. In this case, the mixed water outlet 18 is connected to a water outlet pipe 20. The valve device 12 in turn includes at least one valve 22a, 22b as an integral part, wherein in a preferred embodiment in the valve device 12, two proportional valves 24, 26 are integrated. In this case, the first proportional valve 24 is connected on one side to the cold water connection 14 and on the other side to the mixed water outlet 18, and the second proportional valve 26 is connected on one side to the hot water connection 16 and on the other side connected to the mixed water outlet 18th

In addition, the sanitary fitting 10 has an electrical control 28, which controls the valve device 12 in response to an input signal 30. The input signal 30 receives the electric control 28 from a control signal generator 32, preferably from a joystick 34, which includes an operating lever 38 mounted in a base element 36. Warehousing and the technical construction of the joystick 34 as well as the spout with the spout 20 are disclosed in detail in the same applicant's commonly assigned patent application entitled "Jointed Plumbing Fitting" (Representative Reference A18634EP).

In a preferred embodiment, the actuating lever 38 includes a Betätigungshebelendbereich 40, which is deflected from its neutral, central rest position in two mutually at least approximately at right angles levels. In addition, the base element 36 is equipped with at least one sensor 42, which cooperates with a Betätigungshebelendbereich 40 remote sensor end 44 of the actuating lever 38 to determine the position of the actuating lever 38 relative to its neutral, central position of rest and convert it into the electrical input signal 30.

Preferably, the actuating lever 38 is provided at its sensor end 44 with a permanent magnet 46 which cooperates with Hall sensors 48 which are fixedly mounted with respect to the base member 36 of the joystick 34.

By controlling the valve device 12, the mixed water temperature and the mixed water flow rate are adjusted. Both the electrical controller 28 and the joystick 34 and the valve device 12 are connected to a power supply 50. In a preferred embodiment, the actuating lever 38 of the joystick 34, a light source 52 a, more preferably a light emitting diode 54 a, attached, which stores the stored in a temperature memory of the electrical controller 28 mixed water temperature by a corresponding color indicates. In a further embodiment, the or a further light source 52b or light-emitting diode 54b may be mounted at an end of the water outlet pipe 20 facing the valve device in order to illuminate the outflowing mixed water with a color corresponding to the mixed water temperature. In order to minimize leakage of this light, in another embodiment, a light guide 55 from the light source 52b or light emitting diode 54b may be led to a water outlet end of the water outlet tube 20 opposite said end of the water outlet tube 20 within the water outlet tube 20 directing the light to the water outlet end of the water outlet tube 20 conducts and illuminates the mixed water at the exit from the Wasserauslassrohr 20.

FIG. 2 shows a schematic detail view of the electrical controller 28 and the components to which the controller 28 is connected. The controller 28 is connected to the power supply 50. It receives input signals 30, which may consist, for example, of a water quantity plus signal 56, a water quantity minus signal 58, a temperature plus signal 60 or a temperature minus signal 62. These input signals 30 originate from the control signal generator 32 or the integrated sensor 42, for example the Hall sensors 48. The controller 28 can supply to the first proportional valve 24 a first electrical control signal 64a and to the second proportional valve 26 a second electrical control signal 64b for increasing or decreasing the water flow send out. In addition, the controller 28 may send to the light source 52a, 52b or light emitting diode 54a, 54b a light control signal 66 to adjust the color of the light, which the light source 52a, 52b or light emitting diode 54a, 54b emits to determine.

The controller 28 includes a programmable microprocessor. In the controller 28, a register 67 with multiple register locations 68 is integrated. Various values may be stored therein, such as a value for the mixed water temperature in a temperature storage register, a value for the mixed water flow rate in a mixed water flow storage register, or different time values (for example, a water amount minus time value, a water amount plus time value , a temperature minus time value or a temperature plus time value) in a timer register. These memory modules allow the logic of the controller 28 and the microprocessor can be expanded with various additional functions, which can be triggered by a certain type of operation of the control signal generator 32.

The FIGS. 3a, 3b and 3c show three different examples of temporal curves of the mixed water temperature in response to different, corresponding input signals 30. The generated by appropriate actuation of the control signal generator 32 input signals 30 are located below the horizontal time axis, while on the vertical axis in each case the mixed water temperature is plotted percentage. 0% corresponds to the temperature of the water in the cold water connection and 100% corresponds to the temperature of the water in the hot water connection.

In FIG. 3a is initially constant for about one second, ie continuously, the control signal generator 32 is actuated such that a first temperature-plus signal 70 is generated as an input signal 30 to the controller 28. This occurs if the control signal generator 32 is designed as a joystick 34, for example, in that the actuating lever 38 of the joystick 34 is deflected at its actuating lever end region 40 in one of the at least two deflection planes in a direction which corresponds to the temperature plus direction (the same applies analogously to the examples shown in FIG. 3b and 3c ). After about 1.3 seconds, and thus an interruption of about 0.3 seconds, a second temperature plus signal 72 is pulse-like generated by the control signal generator 32 for about 0.2 seconds 72 as an input signal 30. After approximately 3 seconds, and thus an interruption of approximately 1.5 seconds, a first temperature-minus signal 74 is constantly generated for approximately 0.7 seconds by actuation of the control signal generator 32 as input signal 30 to the controller 28. This occurs if the control signal generator 32 is designed as a joystick 34, for example in that the actuating lever 38 of the joystick 34 at its Betätigungshebelendbereich 40 in a direction which corresponds to the temperature-minus direction (and corresponding counter-deflection direction to the deflection, which of the temperature Plus direction corresponds, is) is deflected (the same applies analogously for the examples shown in FIG. 3b and 3c ). After approximately 4 seconds, and corresponding to an interruption of approximately 0.3 seconds, a second temperature-minus signal 76 is generated in pulses for approximately 0.1 seconds by actuation of the control signal generator 32.

These actuations of the control signal generator 32 and the thus generated input signals 30 to the electrical controller 28 result in the following reactions of the controller 28: The controller 28 compares each input signal 30 with a predetermined and stored time value, ie, the temperature plus signal with a temperature -Plus time value and the temperature minus signal with a temperature-minus time value. In the illustrated embodiment of the invention, the stored time values are 0.3 seconds. Since the first temperature plus signal 70 of one second duration lasts longer than the stored temperature plus time value of duration, increases starting from the time corresponding to the temperature plus time value of 0.3 seconds and thus for 0.7 seconds, the mixed water temperature value is linearly close to 35%. The pulse-like second temperature plus signal 72, which is shorter than the stored temperature plus time value, causes the mixed water temperature value to rise after about 1.3 seconds without lag and within about 0.3 seconds to 100%. The constant first temperature minus signal 74 after 3 seconds, having a duration of about 0.7 seconds, which is longer than the stored temperature-minus time value, causes the mixed water temperature, starting from the time elapsed according to the temperature-minus time value, decreases 0.4% to around 80% linearly as long as the temperature minus signal is present. The pulse-like second temperature minus signal 76 at 4 seconds, whose signal duration is shorter than the stored temperature-minus time value of 0.3 seconds, releases the mixed water temperature value instantaneously and within 0.4 seconds, starting from the end of the temperature-minus signal the minimum sink. In this example will provided that the mixing water flow rate in the period of 0 to 5 seconds is greater than zero, for example, constant. Accordingly, only the mixed water temperature is changed.

If, however, during this time the mixed water flow rate is stopped and no mixed water flows out, the changes made in the mixed water temperature value correspond to a mixed water temperature preselection. However, if the mixing water flow rate is not stopped (and a positive flow rate signal 56 has been sent to the controller 28 in advance of the described temperature plus and minus temperature signals), the proportional valves 24, 26 will also be correspondingly changed with each change in the mixed water temperature the valve device 12 is controlled by the controller 28. In this case, if the mixed water temperature is to be changed while the mixing water flow rate remains the same, the first proportional valve 24 and the second proportional valve 26 are actuated in opposite directions, so that the first proportional valve 24 is closed or opened by a first percentage amount, and the second proportional valve 26 is thereby displaced by a second percentage amount opened respectively closed. However, the mixing water flow rate is always kept at least approximately constant (ie, the sum of the percentage openings of the first proportional valve 24 and the second proportional valve 26 must always remain constant). The same applies analogously to the examples in FIG. 3b and 3c ,

In FIG. 3b After about one second, a third positive temperature signal 78 pulses through for 0.3 seconds generates the control signal generator 32 as an input signal 30 to the electrical controller 28. This signal is compared with the temperature plus time value. Since it corresponds in duration to the stored temperature plus time value, the input signal 30 causes the mixed water temperature value to rise from 0% to 100% within 0.5 seconds, beginning with the end of the temperature plus signal, analogously to the case the shorter signal duration. In this example, the mixing water flow rate in the period of 0 to 5 seconds is greater than 0. After about 5 seconds, however, the mixed water flow rate takes the value 0, so the water flow is stopped after about 5 seconds. The set mixed water temperature value remains stored for a certain time, in this example for about 30 seconds, which is indicated by the dashed line. If the water flow rate were increased during this time, the mixed water temperature would have the same temperature value as the last mixed water flowed through. However, in this example, since the water flow rate is not increased within 30 seconds, at the time of 35 seconds, the mixed water temperature value is automatically reset to 0%.

In Figure 3c At the beginning, for about 0.8 seconds, a fourth temperature plus signal 80 is constantly generated as an input signal 30 to the controller 28 by operation of the control signal generator 32. After about 1.2 seconds, and thus after an interruption of 0.4 seconds, a fifth temperature plus signal 82 is constantly generated by actuation of the control signal generator 32 for about 1.1 seconds. After about 3.3 seconds, and thus after an interruption of around one second, a third temperature-minus signal 84 is constantly generated by the control signal generator 32 for about 3.1 seconds.

During the constant, approximately 0.8 second, fourth temperature plus signal 80 (whose signal duration is correspondingly longer than the stored temperature plus time value), starting from the expiration of the time corresponding to the temperature plus time value, the percentage value of Mixed water temperature linear from 0% to approx. 25%. The fifth constant temperature plus signal 82, which, due to its duration of about 1.1 seconds, is also longer than the stored temperature plus time value, causes, starting with the delay corresponding to the temperature plus time value, the mixed water temperature value of approx 25% increases to approx. 65% as long as the temperature plus signal is present. In this example, the mixing water flow rate is greater than 0 in the period of 0 to 2 seconds. After about 2 seconds, however, the mixed water flow rate becomes 0, so the water flow stops after about 2 seconds (indicated by the dashed line). However, the set mixed water temperature value remains stored for a certain time, preferably of the order of 30 seconds. As in this example, unlike the example in FIG. 3b , When the mixing water flow rate is increased again at the time of about 3 seconds, the effluent mixed water on the previously set and selected mixed water temperature value of 65%.

The constant, third temperature-minus signal 84 of approximately 1.6 seconds duration, applied 3.3 seconds after the start, causes the percentage value of the Mixed water temperature with the same slope as in the linear increase, but now with a negative sign, delayed by the temperature-minus time value, decreases linearly and thus at the end - about 4.9 seconds after the start - takes the percentage value 0.

The FIGS. 4a and 4b show temporal profiles of the mixed water flow rate in response to input signals 30. The input signals 30 are shown below the horizontal time axis, while on the vertical axis in each case the mixed water flow rate is plotted as a percentage. Analogous to the temperature control is to be noted that the input signals 30 have a certain lead time between almost 0 and a maximum of 0.3 seconds, during which the controller 28 decides whether a pulse-shaped or a continuous input signal 30 is present. During this lead time, the controller 28 does not change anything on the output side when a continuous input signal 30 is present, while at the end of a pulse-shaped input signal 30, the corresponding output signal is generated immediately.

In FIG. 4a At the beginning, a first water quantity plus signal 86 is generated at the beginning for about 0.2 seconds by pulsed actuation of the control signal generator 32 to the electric control 28. This happens if the control signal generator 32 is designed as a joystick 34, for example, by the actuating lever 38 of the joystick 34 being deflected at its actuating lever end region 40 in a direction in a deflection plane which corresponds to the water quantity plus direction (the same applies analogously for the example shown in FIG. 4b ). At the time of 1.3 seconds, and thus after an interruption of about one second, a second water quantity plus signal 88 is generated in pulses for about 0.2 seconds. At the time of 2.3 seconds, and thus after an interruption of about one second, a first water quantity minus signal 90 is generated in pulses for about 0.2 seconds. This occurs if the control signal generator 32 is designed as a joystick 34, for example, in that the actuating lever 38 of the joystick 34 at its Betätigungshebelendbereich 40 in a direction which corresponds to the amount of water minus direction (and corresponding Gegenauslenkrichtung to the deflection, which the Wassermenge- Plus direction corresponds, is) is deflected (the same applies analogously to the example shown in FIG. 4b ).

These actuations of the control signal generator 32 and the thus generated input signals 30 to the electrical controller 28 result in the following reactions of the controller 28: The controller 28 compares each input signal 30 with a predetermined and stored time value, ie, the water quantity plus signal 56 with a Water amount plus time value and water amount minus signal 58 with a water amount minus time value. In the illustrated embodiment of the invention, the stored time values are 0.3 seconds. By the first water amount plus signal 86, which is shorter than the stored water amount plus time value, the percentage value of the mixed water flow rate with the end of the water amount plus signal 86 increases without delay within 0.1 seconds from 0% to a corresponding, here with, for example, 30% defined lower mixed water flow limit. The pulse-like second water amount plus signal 88, which is also shorter than the stored water amount plus time value, causes the percentage value of the mixed water flow rate, beginning with the end of the water quantity plus signal 88, increases without delay within 0.15 seconds from 30% to an upper mixed water flow limit value of, for example, 80%. The pulse-like 0.2 second first water level minus signal 90 after about 2.3 seconds, which is shorter than the stored water amount minus time value, causes the mixed water flow rate to begin delaying from the end of the water amount minus signal 90 within 0.24 seconds is reduced to 0%.

In this example, the mixed water flow rate is changed at the same mixed water temperature. At each such mixing water flow rate change, the electric controller 28 also controls the proportional valves 24, 26 of the valve device 12. In this case, if the mixing water flow rate is to be changed while the mixing water temperature remains the same, the first proportional valve 24 and the second proportional valve 26 are activated such that both valves are opened either by a first and a second opening value (in the case of increasing the mixing water flow rate) or by a first and closed a second closing value (in case of a reduction of the mixed water flow rate). In this case, however, the percentage opening ratio of the first proportional valve 24 to the second proportional valve 26 is always kept constant in order to keep the mixed water temperature at an approximately constant temperature value. The same applies analogously to the example in FIG FIG. 4b ,

In FIG. 4b is initially constant by operation of the control signal generator 32 for approximately 1.2 seconds generates a third water quantity plus signal 92. After about 1.6 seconds, and corresponding to an interruption of about 0.4 seconds, a fourth water quantity plus signal 94 is pulsed for about 0.1 seconds and after about 1.9 seconds (and an interruption of about 0.27 seconds) for about 0.35 seconds a constant fifth water quantity plus signal 96 generated. After about 2.8 seconds (and an interruption of about 0.3 seconds), a second water quantity minus signal 98 becomes constant for about 1.2 seconds and after 4.2 seconds (after an interruption of about 0.5 seconds) a fifth water quantity minus signal 100 pulses generated for around 0.1 seconds.

During the constant, about 1.2 second, third water amount plus signal 92, whose signal duration is longer than the stored water amount plus time value, the percentage value of the mixed water flow rate increases within 0.9 seconds with a delay of the duration of the water amount plus time value linear from 0% to approx. 30%. The fourth pulsed water amount plus signal 94 (whose signal duration is also shorter than the stored water amount plus time value) causes the water flow percentage to be instantaneous with respect to the end of the water amount plus signal 94 and 30% within 0.15 seconds 80%, according to the upper mixed water flow limit, increases. The renewed, fifth water quantity plus signal 96 of about 0.36 seconds duration further increases the mixed water flow rate to about 92%. At a flow rate of 80% and above, a pulse control in the direction of 100% is no longer provided here, the input signal 30 is no longer compared to a time value, but directly converted and there is therefore no lead time. The input signal 30 is implemented immediately. The second Water amount minus signal 98 of about 1.2 seconds causes the water flow to decrease linearly to about 62% starting with a delay corresponding to the water amount minus time value. The third, pulse-like water amount minus signal 100 causes the mixing water flow rate with respect to the end of the water amount minus signal 100 to be instantaneously lowered to 0% within 0.19 seconds.

In the in the FIGS. 3a to 4b In the examples shown, the temperature change, with pulse-type input signals 30, takes place at a speed of 100% in 0.5 seconds and, in the case of continuous input signals 30, at a speed of 100% in 2 seconds, and the change in the water quantity in the case of pulse-type input signals 30 at a speed of 100% in 0.3 seconds and, with continuous input signals 30, at a speed of 100% in 3 seconds.

Of course, the speed values can be selected differently by appropriate programming of the controller 28.

In the embodiments shown, input signals 30 which are less than or equal to the relevant time value are evaluated as pulse-type signals. However, it is also possible to regard only input signals 30 which are smaller than the relevant time value as pulse-like signals.

In other embodiments, the controller 28 may be programmed such that, for example, for the above-described mixed water temperature reset value, not the minimum value but any other value is selected. It is also conceivable that several Intermediate stages, both in the temperature setting as well as the mixed water flow rate, can be preset, which can be selected by pulse-like tapping the control signal generator 32 (for example, when increasing the mixing water flow rate not only 30% and 80%, but for example 30%, 50%, 70 % and 80% and for example not only 100% for the mixed water temperature, but for example 20%, 40% 60% 80% and 100%).

The examples according to the FIGS. 3a to 3c and 4a and 4b show traces of mixed water temperature and mixing water flow rate as a function of sequential water flow plus, water flow minus, temperature plus or minus temperature input signals. These are generated by the control signal generator 32 or the joystick 34, wherein the actuating lever end region 40 of the joystick 34 can be deflected in two mutually at least approximately perpendicular Auslenkebenen. Of course, the four input signals can be combined in any order, so that the temperature can be changed, for example with running water, and then the mixing water flow rate can be changed at the newly set temperature value or vice versa.

Other embodiments in which the Betätigungshebelendbereich 40 of the joystick 34 is arbitrarily deflected, are also conceivable. This causes the input signals 30 to be combinations of the four input signals 30 described and, correspondingly, the mixed water temperature and the mixed water flow rate to be changed simultaneously.

In another embodiment, it is conceivable that the control signal generator 32 does not consist of a joystick 34, but, for example, four push buttons, each push button each one of the four input signals (water quantity plus, water quantity minus, temperature plus or minus temperature Signal) is assigned.

The timer further has the task of detecting the duration of the unaltered mixed water flow by measuring the time during which no more 30 input water flow occurs during a mixed water flow greater than zero. After a certain flow time of a few minutes, the controller 28 automatically sets the flow to zero.

This serves as security against unnoticed operation of the sanitary fitting and as a result of possible flooding damage.

Claims (20)

1. Sanitary fitting having a cold water connection (14), a hot water connection (16), a mixed water outlet (18), a valve device (12), having a valve (22a, 22b) as an integral constituent part for setting a mixed water temperature and a mixed water throughflow rate, which valve device is connected to the cold water connection (14) and the hot water connection (16) at one end and is connected to the mixed water outlet (18) at the other end, an electrical controller (28) for actuating the valve (22a, 22b), and a control signal transmitter (32) for generating an input signal (30) to the controller (28), with the controller (28) actuating the valve device (12) as a function of the input signal (30) of the control signal transmitter (32), and as a result the mixed water temperature and the mixed water throughflow rate being set, the input signal (30) containing a positive water quantity signal (56, 86, 88, 92, 94, 96), a negative water quantity signal (58, 90, 98, 100), a positive temperature signal (60, 70, 72, 78, 80, 82) or a negative temperature signal (62, 74, 76, 84) as a function of the operation of the control signal transmitter (32), and the controller (28) transmitting a signal for increasing the mixed water throughflow rate to the valve device (12) on the basis of the reception of the positive water quantity signal (56, 86, 88, 92, 94, 96), transmitting a signal for reducing the mixed water throughflow rate to the valve device (12) on the basis of the reception of the negative water quantity signal (58, 90, 98, 100), transmitting a signal for increasing the mixed water temperature to the valve device (12) on the basis of the reception of the positive temperature signal (60, 70, 72, 78, 80, 82), and transmitting a signal for reducing the mixed water temperature to the valve device (12) on the basis of the reception of the negative temperature signal (62, 74, 76, 84); the controller (28) containing a temperature memory for storing a mixed water temperature value which can be set by means of the control signal transmitter (32), a mixed water throughflow memory for storing a current mixed water throughflow rate, and a timer; and the controller (28) comparing the signal time duration of the positive water quantity signal (56, 86, 88, 92, 94, 96) with a positive water quantity time value which is stored in the timer when said positive water quantity signal is received, and, if the signal time duration is longer than the stored positive water quantity time value, actuating the valve device (12) in such a way that the mixed water throughflow rate, at an at least approximately constant mixed water temperature in line with the mixed water temperature value stored in the temperature memory, is continuously increased until the end of the positive water quantity signal (56, 92, 96) or at a time at which a maximum permissible, preferably 100%, mixed water throughflow rate is achieved.
2. Sanitary fitting according to Claim 1, characterized in that, after the mixed water throughflow is continuously increased, the current mixed water throughflow rate is stored in the mixed water throughflow memory.
3. Sanitary fitting according to Claim 1 or 2, characterized in that the control signal transmitter (32) contains a joystick (34) with an operating lever (38) which is mounted in a base element (36) and can be deflected out of its neutral inoperative position in two planes, which are at least approximately at right angles to one another, using an operating lever end region (40), and the base element (36) is equipped with at least one sensor (42) in order to determine the position of the operating lever (38) relative to its neutral inoperative position and to convert said position into the electrical input signal (30), with the sensor (42) preferably interacting with a sensor end (44), which is averted from the operating lever end region (40), of the operating lever (38).
4. Sanitary fitting according to Claim 3, characterized in that the operating lever (38) is equipped with a permanent magnet (46) at its sensor end (44), said permanent magnet interacting with Hall sensors (48) of the sensor (42) which are firmly mounted with respect to the base element (36) of the joystick (34).
5. Sanitary fitting according to one of Claims 1 to 4, characterized in that the controller (28) compares the signal time duration of the negative water quantity signal (58, 90, 98, 100) with a negative water quantity time value which is stored in the timer when said negative water quantity signal is received, and, if the signal time duration is longer than the stored negative water quantity time value, actuates the valve device (12) in such a way that the mixed water throughflow rate, at an at least approximately constant mixed water temperature in line with the mixed water temperature value stored in the temperature memory, is continuously reduced until the end of the negative water quantity signal (58, 98) or at a time at which the mixed water throughflow rate has reached the value zero, and, after the continuous reduction in the mixed water throughflow rate, the current mixed water throughflow rate is preferably stored in the mixed water throughflow memory.
6. Sanitary fitting according to one of Claims 1 to 5, characterized in that the controller (28) compares the signal time duration of the positive water quantity signal (56, 86, 88, 92, 94, 96) with a or the positive water quantity time value stored in the timer when said positive water quantity signal is received, and, if the signal time duration is shorter than or equal to the stored positive water quantity time value and the current mixed water throughflow rate in line with the value stored in the mixed water throughflow memory is less than a lower mixed water throughflow limit value, preferably 30%, actuates the valve device (12) in such a way that the mixed water throughflow rate is increased without delay such that the mixed water temperature at least approximately corresponds to the mixed water temperature value stored in the temperature memory, and the mixed water throughflow rate corresponds to the lower mixed water throughflow limit value, and, at the end of the immediate increase in the mixed water throughflow rate, the current mixed water throughflow rate is preferably stored in the mixed water throughflow memory.
7. Sanitary fitting according to one of Claims 1 to 6, characterized in that the controller (28) compares the signal time duration of the positive water quantity signal (56, 86, 88, 92, 94, 96) with a or the positive water quantity time value stored in the timer when said positive water quantity signal is received, and, if the signal time duration is shorter than or equal to the stored positive water quantity time value and the current mixed water throughflow rate in line with the value stored in the mixed water throughflow memory is greater than or equal to the lower mixed water throughflow limit value, preferably 30%, and less than an upper mixed water throughflow limit value, preferably 80%, actuates the valve device (12) in such a way that the mixed water throughflow rate is increased without delay such that the mixed water temperature corresponds to the mixed water temperature value stored in the temperature memory and the mixed water throughflow at least approximately corresponds to the upper mixed water throughflow value, and, at the end of the immediate increase in the mixed water throughflow rate, the current mixed water throughflow rate is preferably stored in the mixed water throughflow memory.
8. Sanitary fitting according to one of Claims 1 to 7, characterized in that the controller (28) compares the signal time duration of the negative water quantity signal (58, 90, 98, 100) with a or the negative water quantity time value stored in the timer when said negative water quantity signal is received, and, if the signal time duration is shorter than or equal to the stored negative water quantity time value, actuates the valve device (12) in such a way that the mixed water throughflow rate is reduced without delay in such a way that the mixed water throughflow rate reaches the value zero and, at the end of the immediate reduction in the mixed water throughflow rate, a value zero for the current mixed water throughflow rate is preferably stored in the mixed water throughflow memory.
9. Sanitary fitting according to one of Claims 1 to 8, characterized in that the controller (28) compares the signal time duration of the positive temperature signal (60, 70, 72, 78, 80, 82) with a positive temperature time value stored in the timer when said positive temperature signal is received, and, if the signal time duration is longer than the stored time value and the current mixed water throughflow rate in line with the value stored in the mixed water throughflow memory is zero, continuously increases the mixed water temperature value in the temperature memory until the end of the positive temperature signal (60, 70, 80, 82) or until the mixed water temperature value has reached an upper temperature limit value, and, at the end of the continuous increase in the mixed water temperature value, the current mixed water temperature value is preferably stored in the temperature memory.
10. Sanitary fitting according to one of Claims 1 to 9, characterized in that the controller (28) compares the signal time duration of the positive temperature signal (60, 70, 72, 78, 80, 82) with a or the positive temperature time value stored in the timer when said positive temperature signal is received, and, if the signal time duration is longer than the stored positive temperature time value and the current mixed water throughflow rate in line with the value stored in the mixed water throughflow memory is greater than zero, continuously increases the mixed water temperature value in the temperature memory until the end of the positive temperature signal (60, 70, 80, 82) or until the mixed water temperature value has reached the upper temperature limit value, and at the same time actuates the valve unit (12) in such a way that the mixed water temperature is continuously adapted in accordance with the mixed water temperature value with an at least approximately constant mixed water throughflow rate, and, at the end of the continuous increase in the mixed water temperature value, the current mixed water temperature value is preferably stored in the temperature memory.
11. Sanitary fitting according to one of Claims 1 to 10, characterized in that the controller (28) compares the signal time duration of the positive temperature signal (60, 70, 72, 78, 80, 82) with a or the positive temperature time value stored in the timer when said positive temperature signal is received, and, if the signal time duration is shorter than or equal to the stored time value and the current mixed water throughflow rate in line with the value stored in the mixed water throughflow memory is zero, sets the mixed water temperature value in the temperature memory to an upper temperature limit value and preferably stores said mixed water temperature value.
12. Sanitary fitting according to one of Claims 1 to 11, characterized in that the controller (28) compares the signal time duration of the positive temperature signal (60, 70, 72, 78, 80, 82) with a or the positive temperature time value stored in the timer when said positive temperature signal is received, and, if the signal time duration is shorter than or equal to the stored positive temperature time value and the current mixed water throughflow rate in line with the value stored in the mixed water throughflow memory is greater than zero, sets the mixed water temperature value in the temperature memory to an upper temperature limit value and preferably stores said mixed water temperature value and, at the same time, actuates the valve unit (12) in such a way that the mixed water temperature is adapted in accordance with the mixed water temperature value with an at least approximately constant mixed water throughflow rate.
13. Sanitary fitting according to one of Claims 1 to 12, characterized in that the controller (28) compares the signal time duration of the negative temperature signal (62, 74, 76, 84) with a negative temperature time value stored in the timer when said negative temperature signal is received, and, if the signal time duration is longer than the stored negative temperature time value and the current mixed water throughflow rate in line with the value stored in the mixed water throughflow memory is zero, continuously reduces the mixed water temperature value in the temperature memory until the end of the negative temperature signal (62, 74, 84) or until the mixed water temperature value has reached a lower temperature limit value, and, at the end of the continuous reduction in the mixed water temperature value, the current mixed water temperature value is preferably stored in the temperature memory for a defined time.
14. Sanitary fitting according to one of Claims 1 to 13, characterized in that the controller (28) compares the signal time duration of the negative temperature signal (62, 74, 76, 84) with a or the negative temperature time value stored in the timer when said negative temperature signal is received, and, if the signal time duration is longer than the stored time value and the current mixed water throughflow rate in line with the value stored in the mixed water throughflow memory is greater than zero, continuously reduces the mixed water temperature value in the temperature memory until the end of the negative temperature signal (62, 74, 84) or until the mixed water temperature value has reached a lower temperature limit value, and, at the same time, actuates the valve unit (12) in such a way that the mixed water temperature is continuously adapted in accordance with the mixed water temperature value with an at least approximately constant mixed water throughflow rate, and, at the end of the continuous reduction in the mixed water temperature value, the current mixed water temperature value is preferably stored in the temperature memory for a defined time.
15. Sanitary fitting according to one of Claims 1 to 14, characterized in that the controller (28) compares the signal time duration of the negative temperature signal (62, 74, 76, 84) with a or the negative temperature time value stored in the timer when said negative temperature signal is received, and, if the signal time duration is shorter than or equal to the stored negative temperature time value and the current mixed water throughflow rate in line with the value stored in the mixed water throughflow memory is zero, sets the mixed water temperature value in the temperature memory to a lower temperature limit value and preferably stores said mixed water temperature value.
16. Sanitary fitting according to one of Claims 1 to 15, characterized in that the controller (28) compares the signal time duration of the negative temperature signal (62, 74, 76, 84) with a or the negative temperature time value stored in the timer when said negative temperature signal is received, and, if the signal time duration is shorter than or equal to the stored negative temperature time value and the current mixed water throughflow rate in line with the value stored in the mixed water throughflow memory is greater than zero, sets the mixed water temperature value in the temperature memory to a lower temperature limit value and preferably stores said mixed water temperature value and, at the same time, actuates the valve unit (12) such that the mixed water temperature is adapted in accordance with the mixed water temperature value with an at least approximately constant mixed water throughflow rate.
17. Sanitary fitting according to Claim 3, characterized in that the input signal (30), positive water quantity signal (56, 86, 88, 92, 94, 96), is associated with a deflection plane in one deflection direction and the negative water quantity signal (58, 90, 98, 100) is associated with the deflection plane in a corresponding opposite deflection direction, and the positive temperature signal (60, 70, 72, 78, 80, 82) is associated with the other deflection plane in one deflection direction and the negative temperature signal (62, 74, 76, 84) is associated with said other deflection plane in the correspondingly further opposite deflection direction.
18. Sanitary fitting according to one of Claims 1 to 17, characterized in that a first valve (22a) of the valve device (12) is a first proportional valve (24) which is connected to the cold water connection (14) on its intake side and to the mixed water outlet (18) on its outflow side, and a second valve (22b) of the valve device (12) is a second proportional valve (26) which is connected to the hot water connection (16) on its intake side and to the mixed water outlet (18) on its outflow side, and the controller (28) actuates the first proportional valve (24) with a first electrical control signal (64a), and actuates the second proportional valve (26) with a second electrical control signal (64b).
19. Sanitary fitting according to one of Claims 1 to 18, characterized in that a light source (52a, 52b) emits light in different colors as a function of the selected mixed water temperature.
20. Sanitary fitting according to Claim 19, characterized in that the light source (52a, 52b) is mounted on the control signal transmitter (32) or on the water discharge pipe (20) and is a light-emitting diode (LED) (54a, 54b).

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