WO2011085939A1

WO2011085939A1 - Water-conducting household appliance

Info

Publication number: WO2011085939A1
Application number: PCT/EP2010/070789
Authority: WO
Inventors: Michael Fauth; Michael Georg Rosenbauer
Original assignee: BSH Bosch und Siemens Hausgeräte GmbH
Priority date: 2010-01-12
Filing date: 2010-12-28
Publication date: 2011-07-21
Also published as: DE102010000805A1; EP2523591B1; EP2523591A1

Abstract

The invention relates to a water-conducting household appliance (1), in particular a dishwasher or washing machine, and a method. The household appliance (1), which can be provided with a heatable and/or coolable circulating medium, especially a liquid rinsing liquor (S), during operation, is designed such that the change in temperature of the circulating medium over time can be determined in at least one heating and/or cooling phase (P1; P2) of the circulating medium and can be used as input data to determine the energy consumption.

Description

Water-conducting household appliance

The invention relates to a water-conducting household appliance, in particular a

Dishwasher or washing machine, the household appliance in operation with a heatable and / or coolable circulating medium, in particular with

Flush liquor fluid, is providable.

In practice, such household appliances only energy consumption per

Energy label indicated, i. the information on the energy consumption is part of the technical documentation of the respective device to be handed over to the customer together with the user manual, quick start guide, warranty certificate and the like. The energy consumption is also for a quick overview in classes, such. B. "A", "A +" etc. arranged. However, the values stated here are based on

Standard conditions, where in the standard u. a. Environmental conditions, the respective cleaning program and the loading condition (quantity or mass) are fixed or defined. The real conditions at the customer deviate from the

given standard conditions, it can therefore in practice to considerable

Deviations of the actual energy consumption and / or water consumption of the respective household appliance from the consumption data under standard conditions occur without the customer knowing this.

The invention is based on the problem of achieving an improvement here.

The invention solves this problem in a household appliance, in particular a dishwasher or washing machine, of the type mentioned in that in at least one heating and / or cooling phase of the circulating medium whose

Temperature course over time can be determined and used as input date for the determination of energy consumption.

With the invention is a water-conducting household appliance, in particular a

Dishwasher or washing machine provided, the determination of, in particular measurement, the temperature profile of a circulating medium, in particular at least one - positive and / or negative - slope of a determined, preferably measured, actual temperature curve of a circulating medium, an input variable or an input date for determining, in particular calculation, the actual, current energy consumption of the household appliance wins and from this the real

Determine energy consumption, preferably calculate, the actual,

possibly deviate from a norm.

If, in particular, a gradient of the time-resolved actual temperature profile of the liquid circulating medium can be determined by the household appliance, a

Gradient phase can be easily characterized by this single value, so that the input data set to be used and the subsequent computational effort can be minimized. In particular, a slope (grad _me ss) of an im

Be determined substantially linear rising and / or falling actual temperature profile portion of the liquid circulating medium, in particular measured, so that the slope is constant in this range and results in only a single value for the gradient of this range.

Provided that data for at least one determined, in particular measured, actual temperature profile of the circulating medium of the household appliance in the currently present loading state with data for at least one reference temperature profile, in particular at least one temperature profile of an unloaded household appliance, i. the same household appliance in the unloaded state, and / or at least one temperature profile of the same household appliance with a standardized standard load, are comparable, the deviation between the actual temperature profile and the reference temperature profile is expediently determined. This can be as

Deviation parameter in particular the difference or the quotient between the actual temperature profile and the reference temperature profile (and vice versa) are formed.

In particular, only the difference between the determined, preferably measured, actual temperature profile of the

Circulating medium of the household appliance in the current, ie present loading state and the reference temperature profile of the circulating medium of the household appliance in the unloaded state and / or the difference between the determined, in particular measured, actual temperature profile of the circulating medium of the household appliance current, ie present loading state and the reference temperature profile of the circulating medium of the household appliance in the Normbeladungszustand be observed in order to obtain a measure of an over the unloaded state and / or the norm increased or decreased energy consumption. Particularly advantageously, the household appliance includes an integrated evaluation and / or control unit, in particular arithmetic unit, in the data at least one

Reference temperature profile such as e.g. are stored for the temperature profile of the circulating medium of an unloaded household appliance and / or the temperature profile of the circulating medium of a standard loaded device, so that the comparison with the determined, in particular measured, data of the actual temperature profile is facilitated.

In this case, in each case the gradient of a phase of a substantially linearly rising and / or falling temperature profile of the circulating medium of an unloaded household appliance (grado) and / or a standard-loaded household appliance (grad _N ) can already be stored in the evaluation and / or control unit in order to be able to easily determine the deviation from the actually measured value.

The same applies to the energy consumption of the household appliance in the unloaded state (E ₀ ) and / or in the standard loaded state (E _N ). These are also advantageous in the evaluation and / or control unit, in particular arithmetic unit, deposited.

According to an advantageous embodiment of the invention can be automated with the said deposited data or on request by the user in the evaluation and / or control unit, in particular arithmetic unit, the actual energy consumption (E _mess ) of the household appliance from the stored data for the temperature profile of

Circulating medium of an unloaded household appliance (degree ₀ ) and a standard household appliance (degree _N ) as well as the energy consumption of the household appliance in the

unloaded state (E ₀ ) and in norm laden state (E _N ) together with the determined, in particular measured, slope (grad _meS s) of the temperature of

Circulating medium according to the formula

Emess ^- Eo + [(E ₀ -E _N ) / (degree ₀ degree _N )] ^* (grad measuring grado) be calculated without an external evaluation would be necessary. The thus determined

Power consumption may preferably be visually output via a display, for example an LED display, updated each time for the respective conditions.

Of course, other display options can be used. In particular, the display can also be acoustically in addition to or independent of a visual information output.

In order to determine the most accurate possible slope of the temperature curve can be measured during a rising and / or falling phase of the temperature of the circulating medium these timed clocked. In particular, the time between the

Measurements less than half a second to achieve high accuracy.

For the temperature measurement can be provided according to an advantageous embodiment of the invention, at least one permanently installed sensor, for example, from the

Rinsing liquor is flowed around.

For a high accuracy and error correction, the determination of the

Energy consumption during an operating cycle ^' take place several times. If necessary, the display can be updated. In addition to the dependence on the load or possibly also independently of this, further data such as ambient and / or water inlet temperature, and / or Spülgutart can be included in the determination of energy consumption.

Rinsing liquor or rinsing liquor liquid is understood to mean, in particular, through or circulating clear or clean water or water which is mixed with rinsing agent,

Rinse aid, and / or other additives, and / or dirt particles - depending on the phase of the respective expiring rinse cycle of a selected dishwashing program - may be offset. It is possible, for example, by means of one or more

Instantaneous water heater to heat the rinsing liquor in different phases of the program sequence to a desired temperature for the respective phase defined. The respective phase is preferably carried out with a corresponding partial rinsing of the respective

accompanying wash cycle. The invention also relates to a method for determining an energy consumption of a water-conducting household appliance, in particular a dishwasher or washing machine, wherein the domestic appliance is run during operation of a heatable and / or coolable circulating medium, in particular with Spülflottenflüssigkeit, which is characterized in that in at least one Heating and / or

Cooling phase of the circulating medium whose actual temperature profile determined over time and is used as an input date to determine an energy consumption.

In particular, it may be expedient if the actual temperature profile ascertained or determined over at least one heating and / or cooling phase of the circulating medium over time is compared with a reference temperature profile, in particular a standardized temperature profile, over time. As a result, by a simple relative measurement, an input to determine the actual

Energy consumption of the household appliance derivable. For this purpose, the deviation, in particular the difference or the quotient between the determined, in particular measured, temperature profile and the reference temperature profile is advantageously determined by the evaluation and / or control unit as a deviation parameter and as an input for determining or determining the current energy consumption of the household appliance used. Other advantageous developments of the invention are given in the dependent claims.

The above-explained and / or reproduced in the subclaims advantageous embodiments and further developments of the invention can be used individually or else in any combination with each other in the household appliance according to the invention for use.

The invention and its advantageous developments are explained in more detail with reference to drawings.

Each show schematically: Fig. 1 is a dishwasher as an advantageous embodiment of a

water-conducting household appliance according to the invention in an exemplary, schematic side view,

2 shows an exemplary diagram of a time-resolved actual temperature profile with two reference temperature profiles of the circulating medium of the water-conducting domestic appliance according to FIG. 1 within one

Program execution,

Fig. 3 is an exemplary representation of the dependence of the actual

Energy consumption depending on the loading of a

Dishwasher, in particular mass of the washware introduced in their respective rinsing container, and

Fig. 4 is an exemplary representation of the dependence of the determined

Temperature gradient of a linear phase portion of the measured actual temperature profile of the circulating medium of the dishwasher of Figure 1 of the loading of a dishwasher, in particular mass of the washing in their respective respective introduced Spülguts.

Elements with the same function and mode of operation are each provided with the same reference numerals in the figures.

The water-conducting domestic appliance shown in FIG. 1 is shown here by way of example as a dishwasher. This can be designed as a built-in device or as a stand-alone device. A washing machine can also be designed according to the invention.

The dishwasher 1 shown here comprises a washing container 2 for receiving items to be cleaned, such as dishes, glasses, cutlery, cooking utensils or the like, wherein the washing compartment 2 can be closed by a front door 3. The closed door position is shown in FIG. Here are exemplary in the rinse tank 2, an upper dish basket 4 and a lower

Dish rack 5 is provided in which items can be kept, each with spray arms 6, 7 with a Spülflottenflüssigkeit S such. B. Fresh water FW

can be acted upon. The dishwasher 1 further comprises a feed device 8 for

Fresh water FW, via the externally supplied fresh water FW can be introduced into the washing compartment 2. The water from the washing container 2 collects due to its gravity as Spülflottenflüssigkeit S in a collecting pot or pump sump 9, which is in the lower part of the washing compartment 2 as a recess in the bottom 17.

The collecting pot 9 is followed by a circulating pump 10, by means of which the rinsing liquor or rinsing liquor liquid S can be pumped during a circulation phase of a rinse cycle from the collecting pot 9 via a heater 1 1, for example a water heater, to a water distributor 12. By means of the water switch 12, the supply line to the rotatably mounted, lower spray arm 7 and / or the supply line to the upper, rotatably mounted spray arm 6 selectively or together with

Flush liquor are supplied. By heating 1 1, the rinsing liquor can be heated differently in different phases or periods of a program sequence of a selected Geschirrspülprogramms. According to Figure 2 it is shown that the rinsing liquor liquid S such. B.

introduced fresh water FW first in a first heating phase or during a first time period P1, such as. B. in the cleaning cycle, from an inlet temperature of about 20 ° C to a temperature of about 50 ° C, is heated. Later, such. B. in the rinse cycle, a more extensive, even higher heating in a second heating phase or during a second time period P2 can be seen. The values and phase sequences can vary considerably depending on the program sequence and are therefore only an example here. The heater 1 1 can be controlled by an evaluation and / or control unit, in particular arithmetic unit, R, in order to set the temperature of the wash liquor S desired in each case in the program sequence. In addition, at least one temperature sensor TS for measuring the actually reached temperature of the rinsing solution S is provided. This is here firmly in a line of the liquid circulation of the Dishwasher installed and flows directly from the wash liquor S behind its passage through the heater 1 1. For example, as a sensor TS a

temperature-sensitive resistor may be provided, such as an NTC. The

Arrangement possibilities for the at least one sensor TS are manifold.

In particular, it may optionally be circulated on a carrier or in a finger arrangement of the rinsing liquor S.

The downstream of the circulation pump 1 1 water distributor 12 here has three outputs, of which a first to the upper, in particular rotatably mounted spray arm 6 and a second to the lower, in particular rotatably mounted spray arm 7 leads. The water diverter 2 is controllable or controllable in such a way that the rinsing liquor liquid S conveyed by the circulating pump 0, when flushing items to be washed, is optional, ie. selectively through one of the spray arms 6, 7 or by both spray arms can be introduced simultaneously into the washing compartment 2, to clean there the items to be washed. Next, a third output of the water gate 12 are controlled so that the wash liquor S can be pumped through this exit in a fleet storage tank 13 as a buffer.

In order to remove unnecessary rinse S from the washing tank 2, a wastewater or drain pump 14 is provided, which is connected on the suction side with the collecting pot 9 and the output side with a waste water connection pipe 15, so that during a pumping down a rinse cycle rinse S as wastewater AW can be pumped to the outside. The above-mentioned collecting pot 9 for washing liquor S is also provided with at least one

Screen device 16 provided. Coarse particles, such as leftovers or else

fallen toothpicks, cutlery or similar things that could damage the circulation pump 10, the drain pump 14 or their supply lines and / or discharges are retained therein. In a fine or microsieve 20 also other ingredients that could soil the dishes again on further circulation, removed from the circulation. The sieve device 16 is embedded in the bottom 17 of the washing container 2. It first comprises a flat screen bottom portion 18, which is part of the bottom 17 of the

Rinse tank 2 more or less flush or slightly offset down in this inserted and provided with a plurality of openings. Rinse liquor or

Flush liquor liquid S which has passed through this sieve bottom region 8 can be sucked directly by the circulating pump 10. Furthermore, the sieve bottom area 18

Preferably provided in such a slope that it is in the direction of a central inlet opening 19 of a fine or microsieve 20, which is another part of the

Sieve 16 forms, drops. This is held below the plane of extent of the sieve bottom region 18. From above, the proportion Spülflotte S, which has not drained through the openings of the sieve bottom portion 18 down, in the

Inlet opening 19 of the fine or microsieve enter 20, in which optionally a basket or similar Grobsieb 21 can be mounted in addition.

The inlet opening 19 opens at the bottom into a space surrounded by screen surfaces to the sides within the fine or microsieve 20. Further downwards, this space opens into the sewage connection pipe 15 in the direction of the drain pump 14. Laterally, in particular radially outside of the screen surfaces, there is the at least one suction opening of the circulation pump 10. In the exemplary embodiment, two intake openings are provided symmetrically to one another. A single one

Of course, the outlet opening of the circulation pump can already be sufficient.

The dishwasher 1 is therefore by the mechanism described in its operation with a controlled to a certain upper temperature heatable and / or defined coolable circulating medium, in particular Spülflottenflüssigkeit such. Fresh water or detergent, rinse aid, other additives, and / or dirt added water provided. In at least one of the heating phases P1 or cooling phases P2 of the rinsing liquor liquid S, the actual temperature profile in the rinsing liquor liquid S over the time t can be determined, in particular measurable, and as

Input quantity or as a so-called input date for the calculation of a

Energy consumption usable. In particular, a defined, rising

Temperature phase, which typically runs at about 2K / minute, and / or a falling temperature phase drawable. FIG. 2 shows an exemplary actual temperature profile in dashed lines and denoted by TM. For the further calculation, the measured instantaneous values of the actual temperature profile TM of the rinsing liquor liquid S are sent to an evaluation and / or

Control unit, such. B. arithmetic unit, R forwarded and evaluated there. For the determination of a gradient grad _mess is a measurement of at least two

Temperature values, e.g. T1, T2, the time interval At temporally from each other

are spaced, appropriate. If the two actual temperature values T1, T2 are taken from an approximately linear section of the actual temperature profile TM, then the gradient of the straight line slope corresponds to this approximately linear section of the actual temperature profile TM. In the case when the rinsing liquor liquid is heated for a partial rinse of a rinse cycle, this can be done on the one hand by a rising straight line segment P1, such as e.g. during the heating phase of the wash cycle or rinse cycle of the wash cycle of a selected dishwasher program. On the other hand, this can also be a sloping straight line section P2 during a cooling phase of the rinsing liquor liquid, such as e.g. after the end of a heating phase of the

Be cleaning cycle and / or rinse cycle. In each case, the difference AT of two different temperature values T1, T2 is formed. The gradient grad _me ss then results from the quotient between the temperature difference ΔΤ and the time interval Δt of the two temperature values T1, T2. In particular, a clocked measurement of several temperature values in the approximately linearly increasing or decreasing temperature phases P1, P2 is possible, with a close timing of the temperature measurement is desirable in order to obtain a high accuracy. For example, the time between individual temperature measurements may be shorter than one second. In particular, an average value may in each case be formed in each case from a plurality of determined gradients in the evaluation and / or control unit R per during a heating phase P1 linearly rising or per cooling phase P2 linearly sloping actual temperature curve TM.

In the evaluation and / or control unit R can from the measured time and

So temperature data generally considered a gradient of time-resolved

Temperature curve TM (t) can be determined. This slope is in here

Embodiment than _me ss degree of a linearly rising (or falling)

Temperature course designated. Next are in the evaluation and / or control unit R Data on the temperature profile of a reference dishwasher in the unloaded state and / or the temperature profile of a reference dishwasher in the standard loading state deposited. Generally speaking, therefore, at least one

Reference temperature history of a reference dishwasher stored. The reference dishwashing machine can also be formed by the dishwasher in the non-loading state and in the standard loading state itself, whose actual energy consumption is to be determined. The associated reference temperature profiles can be determined in particular at the factory and in one

Memory unit of the evaluation and / or control unit R have been stored.

In particular, the gradient is degree _{0 of} a phase P1 of an approximately linearly increasing temperature profile and / or the gradient degree _{N of} a phase P2 of an approximately linearly decreasing temperature profile of a reference dishwasher in the non-loading, ie empty state, as well

Norm loading state in the evaluation and / or control unit R, in particular arithmetic unit, deposited. In FIG. 2, the reference temperature curve T ₀ for the unloaded dishwasher is dotted and the reference temperature curve T _N for the standard-loaded dishwasher is shown in dash-dotted lines in sections during the phase P1 and the phase P2. The phase P1 and the phase P2 of the determined actual temperature profile are thus

summarized considered in the evaluation and / or control unit R reference temperature curves T ₀ and T _N associated with a reference dishwasher in the unloaded state and in the standard laden state during the same

Warm-up phase and / or cooling phase has.

In this way, data relating to at least one measured temperature profile TM can be compared with data relating to a temperature profile T _{0 of} an unloaded reference dishwasher and / or a standard-laden reference dishwasher. It turns out, as shown in Figure 4, that with increasing loading of Geschirrspülmaschne 1 (in Figure 4 in place settings (MG) indicated - here are up to 13 place settings possible) decreases the gradient of a temperature increase, with higher loading of

Dishwasher 1 with items to be washed, the heating of the wash liquor S on a

Set temperature so slower than at a lower load. This results in particular the following relationship for depending on increasing load with items to be washed and the associated increase in load mass (heir expressed in number MG of place settings) an approximately linearly decreasing gradient grad:

degree = grad ₀ + ((grad ₀ - gradi ₃ ) / (0-13)) MG, wherein the number N of the place settings in the standard loaded condition of the dishwasher is equal to N = 13.

Because at higher load is usually the storage mass of the items in the

Washing container 2 of the dishwasher 1 greater than in the empty state of the

Rinse container, d. H. if no items to be washed are set in these.

Furthermore, in the evaluation and / or control unit R, in particular computing unit, the energy consumption of the household appliance in the unloaded state (E ₀ ) and in the

Standard loaded state (E _N ) deposited so that then in total in the evaluation and / or control unit R, the actual energy consumption E _mess the

Dishwasher 1 from the stored data for the reference temperature curve T ₀ , in particular the gradient grado of the reference temperature curve T _0, an unloaded reference dishwasher and / or from the stored data for the reference temperature profile T _N , in particular the gradient degree _{N of} the reference - temperature profile T _N, a standard laden dishwasher and energy consumption e ₀ of the dishwasher in the unloaded state as well as the energy consumption e _N in the standard loaded state, together with the measured slope degree of the _MES s

Temperature T according to the formula

Emes ^- Eo + [(E ₀ -E _N) / (grad ₀ -grad _N)] ^* (grad _mess - degree ₀₎ is calculated.

As can be seen in FIG. 3, the energy consumption E increases with the load, ie with the total mass of washware of the dishwasher 1 set in the washing container - again indicated in place settings (MG) - approximately linearly in accordance with the relationship E = E ₀ + K MG at; it is thus substantially proportional to the load of the household appliance 1, measured in place settings MG. K is a proportionality factor. E ₀ is the

Energy consumption in the unloaded state of the dishwasher. The household appliance 1 very advantageously comprises an indication of the energy consumption determined in the respective current operation and thus taking into account the actual circumstances, for example an LED display and / or also an acoustic announcement. The customer receives thus more accurate information of his device 1 under actual Conditions as they occur during operation. Of course, there are others too

Information displays selectable.

Also, the determination of the energy consumption during an operating cycle ^'may take place several times and include an update or correction of the display.

In order to increase the accuracy, further data such as ambient and / or water inlet temperature may be included in the determination of the energy consumption, for example by further temperature measurement sensors in these areas. These further data can be used to refine the energy calculation in the

Calculation formula be included. Also, if necessary, the surface of the dishes and / or the Spülgutart example. be determined by a water measurement and then also as a correction factor in the o. g. Incorporate calculation formula.

A method for determining an energy consumption of a water-bearing

Domestic appliance 1, in particular a dishwasher or washing machine, wherein the household appliance 1 in operation by a heatable and / or coolable circulating medium, in particular Spülflottenflüssigkeit, is traversed, measured in at least one heating and / or cooling phase of the circulating medium whose actual temperature profile over time and is compared with at least one reference temperature profile over time and their deviation, in particular their difference or their quotient, by an evaluation and / or control unit, in particular arithmetic unit, is used to calculate an energy consumption, regardless of the specific device training here separately claimed. For this purpose, it may be particularly expedient if the deviation between the measured temperature profile and the at least one reference temperature profile by the evaluation and / or

Control unit determined and as an input to determine the current

Energy consumption E of the household appliance is used. LIST OF REFERENCE NUMBERS

1 dishwasher,

2 rinse tanks, grad Gradient

3 door, grado gradient in unloaded

4 crockery basket, household appliance

5 Crockery basket, grad _N gradient at standard loaded

6 spray arm, household appliance

7 spray arm gradm _ess determined actual gradient at

8 feeding device, loading state of

9 collection pot, household appliance

10 circulation pump, K proportionality factor

1 1 heating, FW fresh water,

12 water separator, S rinse liquor,

13 fleet storage, P1 phase of linear heating,

14 lye pump, P2 phase of linear cooling,

15 Wastewater connection, R Evaluation and / or control unit

16 sieve device, T ₀ temperature curve with unloaded

17 floor, home appliance

18 sieve bottom area,

19 Inlet, T _N Temperature curve with standard loaded

20 fine or micro sieve, household appliance

21 coarse sieve, TM actual temperature curve

E current actual energy consumption ΔΤ temperature difference

E0 energy consumption in unloaded At time interval

Condition of household appliance T1, T2 two different Temepraturen

E _N energy consumption in standard loaded MG place setting

State of household appliance N Number of place settings at

standard load

Claims

claims

1. Water-conducting household appliance (1), in particular a dishwasher or washing machine, wherein the household appliance (1) in operation with a heatable and / or coolable circulating medium (S), in particular with

Flush liquor liquid, is providable, characterized in that in at least one heating and / or cooling phase (P1; P2) of the circulating medium whose actual temperature profile over time can be determined and used as an input date for determining an energy consumption.

2. Household appliance (1) according to claim 1, characterized in that from this a gradient of the time-resolved actual temperature profile (TM) of the circulating medium (S) can be determined.

3. Household appliance (1) according to one of claims 1 or 2, characterized

characterized in that data for at least one determined, in particular measured, actual temperature profile (TM) of the circulating medium (S) with data for at least one reference temperature profile (T ₀ , T _N ), in particular at least one temperature profile (T ₀ ) of an unloaded Domestic appliance and / or at least one temperature profile (T _N ) of a standard loaded device, are comparable.

4. Household appliance (1) according to one of the preceding claims, characterized

characterized in that a slope (grad _me ss) of a phase (P1, P2) of a substantially linearly increasing and / or decreasing actual temperature profile (TM) of the circulating medium (S) can be determined.

5. Household appliance (1) according to one of claims 1 to 4, characterized in that this comprises an evaluation and / or control unit, in particular arithmetic unit, (R), in the data for at least one reference temperature profile (T ₀ , T _N ), in particular to at least one temperature profile (T ₀ ) of

Circulating medium (S) of an unloaded household appliance (1) and / or zu at least one temperature profile (T _N ) of the circulating medium (S) of a standard loaded device, are deposited.

6. Household appliance (1) according to claim 5, characterized in that the

Gradient of a phase (P1, P2) of a substantially linearly rising and / or falling reference temperature profile (T ₀ , T _N ) of the circulating medium (S), in particular of a substantially linearly rising and / or falling reference temperature curve (T ₀ , T _N ) of an unloaded household appliance (grad ₀ ) and / or a standard-loaded household appliance (grad _N ), in the evaluation and / or control unit, in particular arithmetic unit, (R) is deposited or are.

7. Household appliance (1) according to one of claims 5 or 6 .dadurch

characterized in that in the evaluation and / or control unit, in particular arithmetic unit, (R) the energy consumption of the household appliance (1) in a reference state, in particular unloaded state (E ₀ ) and / or in the standard loaded state (E _N ), deposited or are.

8. Household appliance (1) according to one of claims 5 to 7, characterized in that in the evaluation and / or control unit, in particular arithmetic unit (R), the actual energy consumption E _{mess of} the household appliance (1) from the stored data for the temperature profile of Circulating medium (S) of an unloaded household appliance (grad ₀ ) and a standard-loaded household appliance (grad _N ) and the energy consumption of the household appliance in the unloaded state (E ₀ ) and the norm laden state (E _N ) together with the determined slope (degree _mess ) of the actual Temperature curve (TM) according to the formula

Emes ^- E ₀ + [(E ₀ -E _N) / (grad ₀ -grad _N)] ^* (grad _mess - degree ₀₎ is calculated.

9. Household appliance (1) according to one of the preceding claims, characterized

in that during a rising and / or falling phase (P1; P2) of the actual temperature profile (TM) of the circulating medium (S) a

Temperature measurement runs clocked in time.

10. Household appliance (1) according to claim 9, characterized in that the time between the measurements is shorter than half a second.

1 1. Household appliance (1) according to one of the preceding claims, characterized

in that the determination, in particular measurement, of the temperature of the circulating medium (S) can be carried out via at least one permanently installed sensor (TS).

12. Household appliance (1) according to one of the preceding claims, characterized

characterized in that it comprises an indication of the determined energy consumption.

13. Household appliance (1) according to one of the preceding claims, characterized

characterized in that the determination of the energy consumption during an operating cycle ^' takes place several times and possibly the display is updated.

14. Household appliance (1) according to one of the preceding claims, characterized

in that further data, in particular such as ambient and / or water inlet temperature, are taken into account for determining the energy consumption.

15. Method for determining an energy consumption of a water-bearing

Domestic appliance (1), in particular a dishwasher or

Washing machine, wherein the household appliance (1) in the operation of a

heatable and / or coolable circulating medium (S), in particular with

Flush liquor, is passed, in particular according to one of

previous claims,

characterized in that in at least one heating and / or cooling phase (P1; P2) of the circulating medium whose actual temperature profile (TM) is determined over time and is used as an input date for determining an energy consumption.

16. The method according to claim 15, characterized that in at least one heating and / or cooling phase (P1, P2) of the

Circulating medium (S) over the time (t) determined, in particular measured, actual temperature profile (TM) with at least one reference temperature profile (T ₀ , T _N ), in particular at least one temperature profile (T ₀ ) of an unloaded household appliance and / or at least a standardized temperature profile (T _N ) of a standard-loaded household appliance over which time (t) is compared.

17. The method according to any one of claims 15 or 16, characterized in that the difference and / or the quotient between the determined, in particular measured, temperature profile (TM) and a reference temperature profile (T ₀ , T _N ) by an evaluation and / or control unit (R) and determined as

Input quantity for determining the current energy consumption of the

Household appliance is used.