DE102015011385A1 - Method for operating a sanitary fitting - Google Patents

Abstract

A method for operating a sanitary fitting (1), wherein with the sanitary fitting (1) a mixed water, which is mixed from a cold water and a heated with a first heater (2) hot water, and a heated with a second heater (3) hot water with a Hot water temperature of at least 90 ° C is zapfbar, wherein a heating of the hot water to at least 90 ° C by means of the second heating device (3) not permanently, but only during at least a limited period (4, 5) of an operating phase of the sanitary fitting (1). In addition, a sanitary fitting (1) with a controller (13) is proposed, which is set up to carry out such a method.

Description

The present invention relates to a method for operating a sanitary fitting and a sanitary fitting suitable for this purpose. Such sanitary fittings are used regularly in connection with sink and / or sink.

Sanitary fittings are known from the prior art, with which a blended water mixed from a cold water and a hot water with a mixed water temperature of about 20-60 ° C can be tapped. Furthermore, sanitary fittings are known with which in addition a hot water with a hot water temperature of at least 90 ° C can be tapped. The hot water can be used, for example, for cooking or for preparing hot drinks, such as coffee or tea. Further, the water may also be passed through the sanitary fitting for cleaning purposes. For this purpose, the hot water is heated with a hot water boiler, which may be arranged, for example, under a kitchen worktop or sink. The hot water boiler has heating elements by means of which the hot water in the boiler is continuously heated to at least 90 ° C. A reheating of the hot water in the hot water boiler takes place when the hot water temperature drops to a minimum temperature which is below or exactly at 90 ° C. Thus, a purely temperature-dependent heating curve is driven or a purely temperature-dependent control of the operation of the heating elements is carried out. The disadvantage of this is a comparatively high energy requirement for heating the hot water.

The object of the invention is therefore to solve the problems described with reference to the prior art at least partially and in particular to provide a method for operating a sanitary fitting, which is characterized by a low energy consumption for heating the hot water. In addition, a sanitary fitting is to be specified, by means of which the hot water is particularly energy efficient heatable.

These objects are achieved with a method and a sanitary fitting according to the features of the independent claims. Further advantageous embodiments of the invention are specified in the dependent formulated claims. It should be noted that the features listed individually in the dependent formulated claims can be combined with each other in any technologically meaningful manner and define further embodiments of the invention. In addition, the features specified in the claims are specified and explained in more detail in the description, wherein further preferred embodiments of the invention are shown.

The present invention relates to a method for operating a sanitary fitting. With the sanitary fitting mixed water and hot water can be tapped or dispensed as needed. The mixed water is produced from a cold water and a heated with a first heater hot water by these are mixed or merged. The (independently or separately) tapable hot water is heated with a second heater and can be tapped with a hot water temperature of at least 90 ° C. It is predetermined that a heating of the hot water to at least 90 ° C by means of the second heating device is not permanent, but only during at least a limited period of an operating phase of the sanitary fitting.

The sanitary fitting proposed here is used in particular in connection with sink and / or sink. The sanitary fitting has in particular a mixing valve or a thermostatic valve, by means of which a cold water with a cold water temperature and a hot water with a hot water temperature to a mixed water with a desired mixed water temperature are miscible. The cold water temperature is in particular 0 ° C (Celsius) to 20 ° C and / or the hot water temperature in particular 20 ° C to 80 ° C [degrees Celsius]. The hot water is heated with a first heater, which may be, for example, a central heating of a building or a hot water spa, and fed to the sanitary fitting via a hot water pipe. Accordingly, the cold water of the sanitary fitting via a cold water line (without controllable heater) is supplied. In addition, the sanitary fitting to a second heater, with a hot water to a hot water temperature of at least 90 ° C is heated. The second heating device is, in particular, a hot water boiler with a water reservoir, the water reservoir in particular having a capacity of less than 10 l [liter]. The second heating device may comprise at least one heating element by means of which the hot water in the water reservoir can be heated. Furthermore, the second heating device is connected to the sanitary fitting via a (preferably completely separate) hot water line, which in particular has a line length of less than 2.0 m [meter], preferably less than 1.0 m.

The heating of the hot water to at least 90 ° C by means of the second heating device is not permanent, but only during at least a limited period of an operating phase of the sanitary fitting. Under one Operating phase is understood as the period in which the sanitary fitting is ready to deliver mixed water and hot water on demand; Thus, in particular periods of maintenance, installation, cleaning, etc. are not addressed here. This means in other words that the heating of the hot water to at least 90 ° C does not occur at any time of day and / or not on each day of the week. For this purpose, the second heating device can have a control or regulating unit by means of which the second heating device can be correspondingly set or adjusted. The at least one limited period of time is in particular adjustable such that it comprises periods in which there is regularly a large amount of hot water. These can be, for example, lunch and / or evening times. For example, the heating of the hot water to at least 90 ° C in a first period of 11 to 14 o'clock and / or in a second period of 18 to 21 o'clock take place. Outside the at least a limited period of time, the hot water can be kept at a lower temperature and / or the second heating device can even be switched off completely. As a result, the provision of hot water with at least 90 ° C can be particularly energy efficient in specific demand times.

Moreover, it is advantageous if a start or an end of the at least one limited time period depends on a time of day, a day of the week, a business time, a weekend or a vacation time.

It is also advantageous if a beginning or an end of the at least one limited time span can be set via at least one key or via a communication interface. The at least one key can be arranged, for example, on the sanitary fitting, the second heating device and / or a control of the second heating device. Via the communication interface, the beginning and / or the end of the at least one limited period of time can be conveniently set via a separate operating element. For this purpose, the separate control element, for example, communicate via infrared, UART, WiFi, Bluetooth or the like via the communication interface with the controller. The operating element may be, for example, a mobile phone, for example in the manner of a smartphone. In addition, the controller may include a microprocessor and / or a data memory.

Furthermore, it is advantageous if the second heating device is operated with a heating curve, the course of which is variable. The heating curve is stored in particular in the control of the second heating device, for example in the data memory. The heating curve is a heating curve that describes the hot water temperature over time. In particular between the beginning and the end of the at least one limited period of time, the heating curve can be temperature-controlled.

Moreover, it is advantageous if the hot water is heated by the second heating device during the at least one limited period of time, when the hot water temperature falls below a minimum temperature. This means in particular that the second heating device is controlled in such a way that heating of the hot water takes place (only then or only then) when the hot water temperature drops to a minimum temperature. The minimum temperature may be, for example, 90 ° C, 92 ° C, 94 ° C, 96 ° C or 98 ° C.

Moreover, it is advantageous if the second heating device is deactivated outside the at least one limited period of time. This means, in particular, that the second heating device does not heat the hot water outside the at least one limited time period or that the second heating device is not adjusted or regulated by the control during this phase.

Although a shutdown is preferably proposed here for the largest possible energy savings, it is nonetheless alternatively or cumulatively possible to provide a lower heating requirement outside the at least one limited period of time, for example, in which (during a transitional period) a minimum temperature is maintained well below 90 ° C. The degree of lowering of the minimum temperature can be variably set in dependence on the current calendar situations and / or the current amount of water in the hot water tank.

Furthermore, it is advantageous if a beginning or an end of the at least one limited period of time depends on a presence of a user in the area of the sanitary fitting. For this purpose, the control of the second heating device can be connected to a sensor with which a presence of a user in the vicinity of the sanitary fitting can be detected. The sensor may be, for example, an infrared sensor.

Moreover, it is advantageous if the presence of the user is evaluated statistically by means of a control of the second heating device and the statistical evaluation is used to adapt the beginning or the end of the at least one limited time span. This can also be an irregular or spontaneous daily or weekly schedule of the user or the user to adjust the beginning and / or end of the at least one limited Period of time. The at least one limited period of time is thus adaptable to the use of the sanitary fitting by self-learning by the control of the second heating device.

According to another aspect, there is also provided a sanitary fitting having a fitting housing with a spout, wherein a mixed water is miscible by means of the sanitary fitting of a cold water and a heatable with a first heater hot water, and further comprising a second heating device, with a hot water a hot water temperature of at least 90 ° C can be heated, wherein the second heating device is controllable or adjustable with a controller, which is set up to carry out the operating method proposed here. For details of the sanitary fitting is also referred to the above description of the operating method.

The invention and the technical environment will be explained in more detail with reference to FIGS. It should be noted that the figures show a particularly preferred embodiment of the invention, but this is not limited thereto. The same components are provided in the figures with the same reference numerals. They show by way of example and schematically:

1 : a sanitary fitting;

2 : a timeline with two time periods; and

3 : a heating curve.

The 1 shows a sanitary fitting 1 with a valve body 14 and a spout 15 , via which (on the one hand) a mixed water with a desired mixed water temperature and (on the other hand) a hot water with a hot water temperature of at least 90 ° C can be dispensed or dispensed as required. The mixed water is miscible by means of a mixing valve not shown here from a cold water with a cold water temperature and a hot water with a hot water temperature. The mixed water temperature is by means of a first actuator designed here as a lever 16 adjustable, that on the valve body 14 is arranged. The cold water becomes the sanitary fitting 1 over a cold water pipe 18 and the hot water of the sanitary fitting 1 via a hot water pipe 19 fed. The hot water is previously by means of a first heater 2 preheated to a predetermined hot water temperature. At the first heater 2 this is a central heating of a building in this embodiment. In addition, the sanitary fitting 1 a hot water with a hot water temperature of at least 90 ° C over a hot water pipe 20 fed. The pin of hot water is by means of a second actuator 17 activated, which also on the valve body 14 is arranged. The second actuator 17 is designed here as a security grip with a child safety device. The hot water is by means of a second heating device 3 heated to a hot water temperature of at least 90 ° C.

The second heater 3 is with a controller 13 connected to the second heater 3 not permanently, but only during at least a limited period of time, so controls or adjusts that a heating of the hot water to the hot water temperature of at least 90 ° C. To set the at least a limited period of time, the controller 13 a button 10 on. Furthermore, the controller has 13 to set the at least a limited period of time a communication interface 11 on, over which the adjustment can take place wirelessly. In addition, the controller 13 with a sensor 21 connected over which a presence of a user of the sanitary fitting 1 is detectable. Thus, a beginning and / or an end of the at least one limited period of time are variably adaptable to the presence of the user.

The 2 shows a timeline 22 with a first time span 4 and a second period of time 5 that in the in the 1 shown control 13 can be stored or specified. The first time span 4 indicates a first beginning 6 at 11 o'clock and a first end 8th at 14 o'clock. In addition, the second period indicates 5 a second start 7 at 6 pm and a second end 9 at 22 o'clock. Outside the first period 4 and the second time span 5 disables the in the 1 shown control 13 the second heater 3 so that it essentially consumes no energy.

The 3 shows a corresponding heating curve 12 , The hot water temperature drops outside of the first time span 4 and the second time span 5 to a value that is well below the otherwise regulated minimum temperature, such. B. 15 ° C, which corresponds to the cold water temperature of the cold water. Each for the first start 6 the first time span 4 and the second beginning 7 the second time span 5 heats in the 1 shown second heater 3 the hot water to a hot water temperature of 100 ° C. Subsequently, the second heater 3 Disabled until the hot water temperature reaches a minimum temperature 23 has dropped from 90 ° C. The second heater 3 is then reactivated until the hot water temperature is 100 ° C again. This is repeated until that the first end 8th the first time span 4 or the second end 9 the second time span 5 is reached. Upon reaching the first end 8th or the second end 9 the heater is operated at lower power or (preferably) deactivated, so that the hot water temperature is below the minimum temperature 23 drops from 90 ° C.

With the method proposed here and the appropriately equipped sanitary fitting hot water with a hot water temperature of at least 90 ° C can be provided particularly energy efficient.

LIST OF REFERENCE NUMBERS

1

plumbing fixture

2

first heating device

3

second heating device

4

first time span

5

second time span

6

first beginning

7

second beginning

8th

first end

9

second end

10

button

11

Communication Interface

12

heating curve

13

control

14

fitting housing

15

outlet

16

first actuator

17

second actuator

18

Cold water line

19

Hot water pipe

20

Hot water line

21

sensor

22

time beam

23

minimum temperature

Claims (9)

Method for operating a sanitary fitting ( 1 ), with the sanitary fitting ( 1 ) a mixed water consisting of a cold water and one with a first heating device ( 2 ) heated hot water is mixed, and one with a second heating device ( 3 heated hot water with a hot water temperature of at least 90 ° C, wherein a heating of the hot water to at least 90 ° C by means of the second heating device ( 3 ) not permanently, but only during at least a limited period of time ( 4 . 5 ) an operating phase of the sanitary fitting ( 1 ) he follows. Method according to claim 1, wherein a beginning ( 6 . 7 ) or an end ( 8th . 9 ) of at least a limited period of time ( 4 . 5 ) depends on a time of day, a day of the week, a business time, a weekend or a vacation time. Method according to one of the preceding claims, wherein a beginning ( 6 . 7 ) or an end ( 8th . 9 ) of at least a limited period of time ( 4 . 5 ) via at least one key ( 10 ) or via a communication interface ( 11 ) is adjustable. Method according to one of the preceding claims, wherein the second heating device ( 3 ) with a heating curve ( 12 ) is operated, whose course is changeable. Method according to one of the preceding claims, wherein the hot water during the at least a limited period of time ( 4 . 5 ) by the second heating device ( 3 ) is heated when the hot water temperature is a minimum temperature ( 23 ) falls below. Method according to one of the preceding claims, wherein the second heating device ( 3 ) outside the at least one limited period of time ( 4 . 5 ) is deactivated. Method according to one of the preceding claims, wherein a beginning ( 6 . 7 ) or an end ( 8th . 9 ) of at least a limited period of time ( 4 . 5 ) of a presence of a user in the field of sanitary fitting ( 1 ) depends. Method according to claim 7, wherein the presence of the user by means of a controller ( 13 ) of the second heating device ( 3 ) is statistically evaluated and the statistical evaluation for adjusting the beginning ( 6 . 7 ) or the end ( 8th . 9 ) of at least a limited period of time ( 4 . 5 ) is used. Sanitary fitting ( 1 ), comprising a valve housing ( 14 ) with an outlet ( 15 ), wherein a mixed water by means of the sanitary fitting ( 1 ) from a cold water and one with a first heating device ( 2 ) is miscible with heated hot water, and further comprising a second heating device ( 3 ), with which a hot water to a hot water temperature of at least 90 ° C is heated, wherein the second heating device ( 3 ) with a controller ( 13 ) is adjustable, which is adapted to carry out the method according to one of the preceding claims.

Images