EP2230984B1 - Method for detecting a load-related change in thermal capacity of a water-bearing domestic appliance - Google Patents
Method for detecting a load-related change in thermal capacity of a water-bearing domestic appliance Download PDFInfo
- Publication number
- EP2230984B1 EP2230984B1 EP08860453A EP08860453A EP2230984B1 EP 2230984 B1 EP2230984 B1 EP 2230984B1 EP 08860453 A EP08860453 A EP 08860453A EP 08860453 A EP08860453 A EP 08860453A EP 2230984 B1 EP2230984 B1 EP 2230984B1
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- temperature
- water
- detected
- temperature plot
- detecting
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 35
- 238000000034 method Methods 0.000 title claims description 23
- 238000011068 loading method Methods 0.000 claims description 26
- 239000013505 freshwater Substances 0.000 claims description 25
- 238000001035 drying Methods 0.000 claims description 17
- 238000009833 condensation Methods 0.000 claims description 16
- 230000005494 condensation Effects 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 10
- 239000012487 rinsing solution Substances 0.000 claims description 7
- 238000003860 storage Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 description 23
- 238000005406 washing Methods 0.000 description 20
- 238000004140 cleaning Methods 0.000 description 13
- 238000005259 measurement Methods 0.000 description 4
- 238000011010 flushing procedure Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000010981 drying operation Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000012459 cleaning agent Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004851 dishwashing Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012432 intermediate storage Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Images
Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
- A47L15/0021—Regulation of operational steps within the washing processes, e.g. optimisation or improvement of operational steps depending from the detergent nature or from the condition of the crockery
- A47L15/0034—Drying phases, including dripping-off phases
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/48—Drying arrangements
- A47L15/483—Drying arrangements by using condensers
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4291—Recovery arrangements, e.g. for the recovery of energy or water
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4295—Arrangements for detecting or measuring the condition of the crockery or tableware, e.g. nature or quantity
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
- A47L2401/04—Crockery or tableware details, e.g. material, quantity, condition
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
- A47L2401/12—Water temperature
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
- A47L2401/34—Other automatic detections
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
- A47L2501/11—Air heaters
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
- A47L2501/30—Regulation of machine operational steps within the washing process, e.g. performing an additional rinsing phase, shortening or stopping of the drying phase, washing at decreased noise operation conditions
Definitions
- the invention relates to a method according to the preamble of patent claim 1.
- a first temperature is detected by means of a temperature sensor, which adjusts for a first batch of added water after it has been sprayed and adjusted to the temperature of the dishes. Thereafter, this first batch is pumped out of the washing container of the dishwasher. Then, a second batch of water is added to the rinse tank and its temperature detected by the temperature sensor before this water is brought into contact with the dishes and it transfers heat to the dishes. Only then is the second batch of water sprayed on the dishes. Finally, a third temperature is determined which comprises the second batch of water after spraying and heating the dishes. From the three singular recorded temperature values, the loading weight of the dishes can be calculated.
- the solution of the object of the invention is based on a method for detecting the load-related heat capacity change of a water-conducting household appliance, in particular a dishwasher, for optimizing a drying process.
- a temperature profile is detected during the cooling of the dishes. For example, during the main cleaning cycle, the temperature of the cooling rinse liquor, which is in temperature equilibrium with the ware, can be measured. Because a high load cools slower than a low one, the acquisition of the temperature history of the rinse liquor can be used as a measure of the load. It is technically easy to detect via a temperature sensor, because the sensor can be integrated into the flushing circuit without great technical effort.
- the temperature profile can be detected on a condensation surface, for example on the inside of a door or on the outer surface of a water tank serving as a reservoir, which serves for the intermediate storage of water and / or rinsing liquor.
- pairs of temperature values are detected at two different locations in the machine.
- a first value can be determined in one area in front of the items to be washed, and a second value afterwards. So can be detected so a temperature difference, for example, the rinsing liquor from values before and after contact with the dishes. From the change in the difference, the heat capacity change can be determined by the dishes.
- the correlation of temperature profile and heat capacity also applies to the detection of a temperature at the condensation surface.
- the temperature profile after a mixing process of rinsing liquor with fresh water is detected is calorimetrically by measuring a mixture temperature from one of the two temperature values at a Change or at least partial change of rinsing determined. This can be done for example during the cleaning cycle or an intermediate rinse cycle. After a first cleaning cycle with warm water, it can be completely or partially pumped off and cold fresh water fed into the rinsing chamber. The fresh water warms up by the contact with the warm dishes and, if necessary, by mixing with warm residual water from the cleaning cycle.
- the heat capacity can be derived by a calorimetric calculation of the temperature and amount of fresh water supplied, optionally the amount and temperature of the fresh water remaining from the cleaning cycle and the resulting mixing temperature. Also these data can - under circumstances with already existing means, thus with small technical expenditure - be detected technically simply
- a time dependency of a temperature representative of the temperature of the washware itself and / or the time dependence of a temperature representative of the temperature of a condensation surface is detected.
- the time dependence of the temperature of the items to be washed or of the condensation surface is to be understood as the temperature profile.
- the humidity in the washing compartment settles during cooling during a drying process.
- the determination of the temperature at the condensation surface offers on the one hand a simple and on the other hand independent of the rinsing eye and the circulation pump or their performance data acquisition capability.
- the invention thus makes use of the knowledge that the course of the rinse temperature or its change during a certain period of time is in direct correlation to the heat capacity and temperature of the items to be washed. This results in a technically simple calculation method, which indirectly determine the size of the heat capacity, which is difficult to detect, or which can be estimated within narrow limits.
- a fit function describing the time dependency of the temperature during cooling or mixing can be adapted to the detected time dependence during cooling or mixing, wherein the fit function has the heat capacity of the dishes as a fit parameter. Also in this way The heat capacity of the items to be washed can be determined as a measure of the loading in a technically simple manner.
- thermo profile during a cooling phase and / or a mixing temperature can preferably be provided, in addition to the temperature profile during a cooling phase and / or a mixing temperature, to record the temperature profile during a heating phase of rinsing liquor, in particular of circulated rinsing liquor, so as to increase the accuracy by combining these measurements.
- the invention includes a water-conducting domestic appliance, in particular a dishwasher, at least comprising means for detecting the load-related storage capacity of thermal energy.
- the water-conducting household appliance has means with which a temperature profile is detected during the cooling of the dishes. The determination of the current load is automatic, that is without input by an operator. This considerably simplifies the operation of the dishwasher.
- the loading can be detected indirectly via a determination of the heat capacity of the items to be washed.
- the dishwasher may comprise a temperature sensor for detecting a temperature representative of the temperature of the items to be washed and means for evaluating the detected temperature and / or their time dependence.
- the temperature sensor can be arranged in the rinsing chamber or in the circulation circuit and comes into contact with the water circulated during a cleaning cycle, which in turn is in heat exchange with the items to be washed. It should therefore be arranged so that it can at least indirectly detect the temperature of the items to be washed.
- a second temperature sensor with associated evaluation means for detecting the temperature of freshly supplied, not yet heated fresh water may be present.
- the second temperature sensor can be in heat exchange with the heat storage. The second temperature sensor and the evaluation means allow the determination of the heat capacity of the load according to the method last described above.
- the dishwasher may comprise a control unit which is designed to process the data of the temperature sensor or sensors, ie to carry out the method described above or sections thereof and their variants.
- Fig. 1 shows the known operations in a dishwasher with self-heat drying. They include a pre-rinse 2, a heating phase 4, a cleaning cycle 6, an intermediate rinse 8, a rinse 10 and a final drying operations 12 in the pre-wash 2 cold fresh water (about 3.4 - 3.9 l) is supplied and for a preset duration of about 15 minutes from a circulation pump 20 through the rinsing chamber 14 (see Figures 3 and 4 ) circulated.
- a heater 56 in the hydraulic circuit heats the fresh water of Vor Togethergangs 2 in about 13 to 14 minutes to an initial cleaning temperature of about 51 ° C.
- the items to be washed 28 in the rinsing chamber 14 are heated.
- the heated rinsing solution provided with cleaning agent is circulated, whereby the items to be washed 28 are substantially cleaned.
- the rinsing solution is pumped out of the rinsing chamber 14 and fed clean, cold fresh water.
- the fresh water is circulated during the intermediate rinse 8 for a period of about 5 min and heats up especially by contact with or by heat transfer from the still warm dishes 28 and possibly a heat exchanger 38 (FIG. Fig. 4 ).
- the intermediate flushing water is pumped out of the washing chamber 14 and fed again cold fresh water.
- Fig. 2 illustrates the time characteristic of the temperature in the rinsing chamber for different loadings during the rinse cycle 10 and the drying cycle 12.
- the mean curve in Fig. 2 shows the temperature profile in the rinsing chamber for a defined standard loading B standard .
- the temperature during the heating phase in the final rinse cycle 10 is in accordance with the mean curve in Fig. 2 regulated to an initial temperature T 0, standard .
- T 0 initial temperature
- the Eigenhofftrocknungsgang 12 Immediately thereafter begins the Eigenhofftrocknungsgang 12, so the complete evaporation of the water film on the dishes. If a higher or lower load was detected, a correspondingly larger or smaller heating energy input is required for the self-heat drying. Accordingly, the temperature during the heating phase is set to a higher or lower initial temperature T 0 + .DELTA.T or T 0 - ⁇ T for the self-heat drying cycle 12.
- the drying cycle 12 begins.
- the temperature in the rinsing chamber runs essentially in accordance with a decreasing exponential function. Meanwhile evaporates on the dishes 28 existing moisture film and condenses on a condensation surface.
- a temperature T 12 is reached as a characteristic feature, which subsequently changes only insignificantly and marks the achievement of an essentially asymptotic state. Then, the moisture film on the washware 28 is completely evaporated and the drying process 12 can be terminated. Since the achievement of the time t 12 depends on the load, their detection is essential for the control of the drying process in terms of energy input and time course.
- the time dependence T1 (t) of an actual temperature T1 in the rinsing chamber during the cooling phase of the cleaning cycle 6, ie the temperature profile over the time t, is detected. From this, the heat capacity of the load as a measure of the actual load B is obtained.
- the time dependence T1 (t) of the temperature during the cooling phase essentially follows an exponential function in time t T ⁇ 1 t ⁇ e - C gcs ⁇ t - t 0 ,
- C tot C (B) + C (water) represents the total heat capacity than the sum of the heat capacity C (B) of the current loading is B and the heat capacity C (water) of the circulating water is apprehended.
- t 0 is the time when the cooling phase begins.
- the heat capacity C (water) of the circulated rinsing liquor depends on the amount of water introduced, which is measured when filling the rinsing chamber with fresh water.
- the total heat capacity C ges is determined by fitting a fit function to the cooling curve T1 (t) with C ges as fit parameter.
- the heat capacity change C (B ist ) by the current load B is calculated by subtracting the measured heat capacity C (water) from the total heat capacity C ges derived from the cooling curve T1 (t).
- the mixing temperature which occurs in the intermediate rinse 8 is measured.
- a function is adapted to the time dependency of the temperature measured in the intermediate rinse 8 temperature by fitting and from which after feeding the cold fresh water at the beginning the intermediate rinse 8 determined by temperature compensation with the setting of the cleaning cycle 6 still warm items 28 mixing temperature setting as an asymptotic approximation of the temperature-time dependence in the intermediate rinse 8 using known mathematical equations or models for calorimetric temperature mixing.
- the in Fig. 3 dishwashing machine shown comprises a washing chamber 14, in which the items to be washed 28 is placed in a loading basket 30, a loading door 16 hinged to the washing chamber 14, a Wassersprüh rotating arm 24 rotatably disposed in the washing chamber 14, a circulating pump arranged below a bottom wall 19 of the washing chamber 14 20 for circulating the scavenge, an inlet 22 a, which connects the circulation pump 20 with the water spray rotary arm 24, a drain 22 b in the bottom wall 19 of the washing chamber 14, which is connected to a suction side of the circulation pump 20, a heater 56 at the inlet 22 a to Heating the circulated water, a first temperature sensor 32 and a second temperature sensor 34, a control unit 58 for controlling the operations and devices of the dishwasher and for reading and evaluating the measurement signals of the temperature sensor 32, 34, a connecting line 48 for the supply of fresh water, a drain line 52 to dissipate consume The flushing liquor and a heating device 56 at the inlet 22a with
- the first temperature sensor 32 is arranged in the circulation pump 20 and serves to detect the temperature T1 of the water or the rinsing liquor in the circulation circuit. However, it may also be disposed at other positions in the circulation circuit, such as in the inlet 22a, in the drain 22b or in a depression in the bottom wall of the washing chamber 14 in the vicinity of the opening of the drain 22b.
- the second temperature sensor 34 is in contact with the inside wall, d. H. arranged the washing chamber 14 facing wall of the loading door 16 and serves to detect a characteristic of the temperature of a cold surface in the washing chamber 14 reference temperature T2. It can also be arranged, for example, in an operating panel 18 in the loading door 16.
- the temperature sensor 32 in the circulation pump 20 detects a temperature profile of the rinsing eye over time and passes the data to the control device 58 on.
- the temperature of the rinsing eye is on the one hand by the starting temperature of the Fresh water from the direction of the house installation determined. Since the fresh water first enters the circulation pump 20 before it is pumped further, the sensor 32 can detect its temperature. The fresh water further supplied heating power is also known. The energy losses via the line 22a and the walls of the rinsing chamber 14 are largely constant or of at least relatively little influence. Thus, the regulating device 58 can determine the temperature of the rinsing eye when it enters the rinsing chamber 14 before it hits the ware 28.
- the control device 58 can close the degree of loading of the rinsing chamber 14. With a smaller amount of items to be washed 28 is a lower heat capacity in the washing chamber 14, whereby the liquor is cooled less. The ware 28 heats up so faster, which is why the heating phase 4 shortened or the power of the heater 56 can be reduced. Conversely, at a higher load, an extension of the heating phase 4 or an increase in the heating power is required.
- a second temperature sensor 34 may be attached to or in the loading door 16.
- the loading door 16 represents a relatively cool condensation surface in the drying cycle 12 by self-heating.
- the washware 28 heated in the preceding rinse cycle 10 evaporates the moisture adhering to it, which deposits on the loading door 16 as a cool condensation surface.
- the course of the temperature of the condensation surface is an indication of the degree of loading of the washing chamber 14. Because a larger amount of items to be washed 28 can bind a correspondingly higher amount of moisture on its surface. The subsequent onset of condensation gives off a larger amount of heat at the condensation surface of the loading door 16, as it is less loaded.
- FIG. 4 shown second embodiment of the dishwasher differs from the in Fig. 3 shown first embodiment by serving as a temperature storage water storage 38.
- the same elements of the first and second embodiments are designated by the same reference numerals.
- the dishwasher after Fig. 4 includes the provided with the controllable connection valve 50 connecting line 48 for filling the heat exchanger 38 with fresh water and a connecting line 40 between the heat exchanger 38 and the circulation pump 20 and arranged in the water tank 38 third temperature sensor 36 for detecting the temperature T3 of the water in the water tank 38th Die Connecting line 40 is opened and closed by the controllable connecting valve 42.
- the valve 42 can be controlled via a line 42s to the control unit 58. When the valve 42 is closed and the valve 50 is opened, the water reservoir 38 is filled with cold fresh water. In reverse valve position, it is filled with water from the circulation, which may be heated if necessary.
- the water reservoir 38 is formed in the shape of a container arranged parallel to the side wall of the washing chamber 14 and abuts against the side wall.
- the third temperature sensor 36 is arranged in contact with the washing chamber 14 facing the wall of the water reservoir 38. To improve the efficiency of the heat drying of the water tank 38 is filled during the drying cycle 12 with cold fresh water. As a result, the water tank 38 facing side wall of the washing chamber 14 to a cooled condensation surface.
- the temperature sensor 36 thus fulfills the one hand, the same purpose as the sensor 34 in the last example described. However, since it lies exclusively in the fresh water inflow of the circulating pump 20, it can detect the outlet temperature of the fresh water with a higher accuracy than the temperature sensor 32. It thus provides a better data basis for determining the loading by the control unit 58.
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- Washing And Drying Of Tableware (AREA)
Description
Die Erfindung betrifft ein Verfahren nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a method according to the preamble of
Bei wasserführenden Haushaltsgeräten, wie bspw. Geschirrspülmaschinen, ändert sich in Abhängigkeit der Spülgutmenge und -art deren thermisches Verhalten, d.h., das eingebrachte Spülgut bewirkt eine Wärmekapazitätsänderung, mit der Folge, dass bspw. die Zeitdauer von Abkühl- oder Trocknungsvorgänge verlängert oder verkürzt wird.In the case of water-conducting domestic appliances, such as, for example, dishwashers, their thermal behavior changes depending on the amount and type of washware, that is, the introduced washware causes a change in heat capacity, with the result that, for example, the duration of cooling or drying operations is lengthened or shortened.
Aus der
Bei dem Verfahren des
Es ist Aufgabe der Erfindung, ein verbessertes Verfahren bereitzustellen.It is an object of the invention to provide an improved method.
Die Lösung der Aufgabe der Erfindung geht aus von einem Verfahren zur Erfassung der beladungsbedingten Wärmekapazitätsänderung eines wasserführenden Haushaltsgeräts, insbesondere einer Geschirrspülmaschine, zum Optimieren eines Trocknungsvorgangs.The solution of the object of the invention is based on a method for detecting the load-related heat capacity change of a water-conducting household appliance, in particular a dishwasher, for optimizing a drying process.
Erfindungsgemäß ist vorgesehen, dass ein Temperaturverlauf während des Abkühlens des Spülguts erfasst wird. Beispielsweise kann während des Hauptreinigungsgangs die Temperatur der sich abkühlenden Spülflotte, die mit dem Spülgut im Temperaturgleichgewicht steht, gemessen werden. Weil eine hohe Beladung sich langsamer abkühlt als eine geringe, kann die Erfassung des Temperaturverlaufs der Spüllauge als Maß für die Beladung verwendet werden. Sie ist über einen Temperaturfühler technisch einfach zu erfassen, weil der Fühler ohne großen technischen Aufwand in den Spülkreislauf integriert werden kann. Alternativ oder zusätzlich kann der Temperaturverlauf an einer Kondensationsfläche erfasst werden, bspw. an der Innenseite einer Tür oder an der Außenfläche eines als Vorratsbehälter dienenden Wassertanks, der der Zwischenspeicherung von Wasser und/oder Spülflotte dient. Günstiger Weise werden in beiden Varianten zur Ermittlung des Temperaturverlaufs Paare von Temperaturwerten an zwei unterschiedlichen Orten in der Maschine erfasst. Ein erster Wert kann in einem Bereich vor dem Spülgut ermittelt werden, und ein zweiter danach. Erfasst werden kann also eine Temperaturdifferenz beispielsweise der Spüllauge aus Werten vor und nach Kontakt mit dem Spülgut. Aus der Veränderung der Differenz kann die Wärmekapazitätsänderung durch das Spülguts ermittelt werden. Sinngemäß trifft die Korrelation von Temperaturverlauf und Wärmekapazität auch für die Erfassung einer Temperatur an der Kondensationsfläche zu.According to the invention it is provided that a temperature profile is detected during the cooling of the dishes. For example, during the main cleaning cycle, the temperature of the cooling rinse liquor, which is in temperature equilibrium with the ware, can be measured. Because a high load cools slower than a low one, the acquisition of the temperature history of the rinse liquor can be used as a measure of the load. It is technically easy to detect via a temperature sensor, because the sensor can be integrated into the flushing circuit without great technical effort. Alternatively or additionally, the temperature profile can be detected on a condensation surface, for example on the inside of a door or on the outer surface of a water tank serving as a reservoir, which serves for the intermediate storage of water and / or rinsing liquor. Conveniently, in both variants for determining the temperature profile, pairs of temperature values are detected at two different locations in the machine. A first value can be determined in one area in front of the items to be washed, and a second value afterwards. So can be detected so a temperature difference, for example, the rinsing liquor from values before and after contact with the dishes. From the change in the difference, the heat capacity change can be determined by the dishes. Analogously, the correlation of temperature profile and heat capacity also applies to the detection of a temperature at the condensation surface.
In einer weiteren Ausführungsform der Erfindung ist vorgesehen, dass der Temperaturverlauf nach einem Mischungsvorgang von Spülflotte mit Frischwasser erfasst wird, d.h. die Wärmekapazitätsänderung durch die Beladung wird kalorimetrisch durch Messen einer Mischungstemperatur aus einer der beiden Temperaturwerte bei einem Wechsel oder zumindest teilweisen Wechsel der Spülflotte bestimmt. Dies kann beispielsweise während des Reinigungsgangs oder eines Zwischenspülgangs erfolgen. Nach Ablauf eines ersten Reinigungsgangs mit warmem Wasser kann es ganz oder teilweise abgepumpt und kaltes Frischwasser in die Spülkammer zugeführt werden. Das Frischwasser erwärmt sich durch den Kontakt mit dem warmen Spülgut und gegebenenfalls durch Mischen mit warmem Restwasser aus dem Reinigungsgang. Unter Vernachlässigung der Temperatur des Spülguts vor der Zufuhr des Frischwassers kann aus der Temperatur und Menge des zugeführten Frischwassers, gegebenenfalls der Menge und Temperatur des aus dem Reinigungsgang verbliebenen Frischwassers und der sich einstellenden Mischungstemperatur die Wärmekapazität durch eine kalorimetrische Berechnung hergeleitet werden. Auch diese Daten können - unter Umständen mit schon vorhandenen Mitteln, also mit geringem technischem Aufwand - technisch einfach erfasst werdenIn a further embodiment of the invention, it is provided that the temperature profile after a mixing process of rinsing liquor with fresh water is detected, ie the heat capacity change by the load is calorimetrically by measuring a mixture temperature from one of the two temperature values at a Change or at least partial change of rinsing determined. This can be done for example during the cleaning cycle or an intermediate rinse cycle. After a first cleaning cycle with warm water, it can be completely or partially pumped off and cold fresh water fed into the rinsing chamber. The fresh water warms up by the contact with the warm dishes and, if necessary, by mixing with warm residual water from the cleaning cycle. Neglecting the temperature of the dishes prior to the supply of fresh water, the heat capacity can be derived by a calorimetric calculation of the temperature and amount of fresh water supplied, optionally the amount and temperature of the fresh water remaining from the cleaning cycle and the resulting mixing temperature. Also these data can - under circumstances with already existing means, thus with small technical expenditure - be detected technically simply
Ein derartiges Vorgehen wäre nicht komfortabel. In einer vorteilhaften Ausgestaltung der Erfindung wird eine Zeitabhängigkeit einer für die Temperatur des Spülguts selbst repräsentativen Temperatur und/oder die Zeitabhängigkeit einer für die Temperatur einer Kondensationsfläche repräsentativen Temperatur erfasst werden. Unter der Zeitabhängigkeit der Temperatur des Spülguts bzw. der Kondensationsfläche ist der Temperaturverlauf zu verstehen. An der Kondensationsfläche schlägt sich die Luftfeuchtigkeit im Spülraum während des Abkühlens bei einem Trocknungsvorgang nieder. Insbesondere die Ermittlung der Temperatur an der Kondensationsfläche bietet eine einerseits einfache und andererseits von der Spüllauge und der Umwälzpumpe bzw. deren Leistungsdaten unabhängige Erfassungsmöglichkeit. Die Erfindung macht sich also die Erkenntnis zunutze, dass der Verlauf der Spülguttemperatur bzw. deren Änderung während einer bestimmten Zeitspanne in direkter Korrelation zur Wärmekapazität und Temperatur des Spülguts steht. Dadurch ergibt sich eine technisch einfache Berechnungsmethode, die an sich schwer zu erfassende Größe der Wärmekapazität mittelbar bestimmen bzw. in engen Grenzen abschätzen zu können.Such a procedure would not be comfortable. In an advantageous embodiment of the invention, a time dependency of a temperature representative of the temperature of the washware itself and / or the time dependence of a temperature representative of the temperature of a condensation surface is detected. The time dependence of the temperature of the items to be washed or of the condensation surface is to be understood as the temperature profile. At the condensation surface, the humidity in the washing compartment settles during cooling during a drying process. In particular, the determination of the temperature at the condensation surface offers on the one hand a simple and on the other hand independent of the rinsing eye and the circulation pump or their performance data acquisition capability. The invention thus makes use of the knowledge that the course of the rinse temperature or its change during a certain period of time is in direct correlation to the heat capacity and temperature of the items to be washed. This results in a technically simple calculation method, which indirectly determine the size of the heat capacity, which is difficult to detect, or which can be estimated within narrow limits.
In den genannten Ausführungsformen kann an die erfasste Zeitabhängigkeit beim Abkühlen bzw. Mischen eine die Zeitabhängigkeit der Temperatur beim Abkühlen bzw. Mischen beschreibende Fit-Funktion angepasst werden, wobei die Fit-Funktion die Wärmekapazität des Spülguts als einen Fit-Parameter aufweist. Auch auf diese Weise kann die Wärmekapazität des Spülguts als Maß für die Beladung auf technisch einfache Weise ermittelt werden.In the embodiments mentioned, a fit function describing the time dependency of the temperature during cooling or mixing can be adapted to the detected time dependence during cooling or mixing, wherein the fit function has the heat capacity of the dishes as a fit parameter. Also in this way The heat capacity of the items to be washed can be determined as a measure of the loading in a technically simple manner.
Ferner kann vorzugsweise vorgesehen sein, zusätzlich zum Temperaturverlauf während einer Abkühlphase und/oder einer Mischungstemperatur den Temperaturverlaufs während einer Aufheizphase von Spülflotte, insbesondere von umgewälzter Spülflotte, zu erfassen, um so durch Kombination dieser Messungen die Genauigkeit zu erhöhen.Furthermore, it can preferably be provided, in addition to the temperature profile during a cooling phase and / or a mixing temperature, to record the temperature profile during a heating phase of rinsing liquor, in particular of circulated rinsing liquor, so as to increase the accuracy by combining these measurements.
Ferner gehört zur Erfindung ein wasserführendes Haushaltsgerät, insbesondere Geschirrspülmaschine, wenigstens aufweisend Mittel zur Erfassung des beladungsbedingten Speichervermögens thermischer Energie. Erfindungsgemäß weist das wasserführende Haushaltsgerät Mittel auf, mit denen ein Temperaturverlauf während des Abkühlens des Spülguts erfasst wird. Die Bestimmung der aktuellen Beladung erfolgt automatisch, das heißt ohne Eingabe durch einen Bediener. Dadurch vereinfacht sich die Bedienung der Geschirrspülmaschine erheblich.Furthermore, the invention includes a water-conducting domestic appliance, in particular a dishwasher, at least comprising means for detecting the load-related storage capacity of thermal energy. According to the invention, the water-conducting household appliance has means with which a temperature profile is detected during the cooling of the dishes. The determination of the current load is automatic, that is without input by an operator. This considerably simplifies the operation of the dishwasher.
Erfindungsgemäß kann die Beladung mittelbar über eine Ermittlung der Wärmekapazität des Spülguts erfasst werden. Zum Ermitteln der Wärmekapazität kann die Geschirrspülmaschine einen Temperaturfühler zum Erfassen einer für die Temperatur des Spülguts repräsentativen Temperatur sowie Mittel zum Auswerten der erfassten Temperatur und/oder deren Zeitabhängigkeit umfassen. Der Temperaturfühler kann in der Spülkammer oder im Umwälzkreis angeordnet sein und kommt in Kontakt mit dem während eines Reinigungsgangs umgewälzten Wasser, das wiederum mit dem Spülgut im Wärmeaustausch steht. Er ist also so anzuordnen, dass er zumindest mittelbar die Temperatur des Spülguts erfassen kann. Zusätzlich kann ein zweiter Temperaturfühler mit zugehörigen Auswertemitteln zur Erfassung der Temperatur von frisch zugeführtem, noch nicht erwärmtem Frischwasser vorhanden sein. Bei Geschirrspülmaschinen, die bauartbedingt einen Wärmespeicher umfassen, kann der zweite Temperaturfühler im Wärmeaustausch mit dem Wärmespeicher stehen. Der zweite Temperaturfühler und die Auswertemittel ermöglichen das Bestimmen der Wärmekapazität der Beladung nach dem oben zuletzt beschriebenen Verfahren.According to the invention, the loading can be detected indirectly via a determination of the heat capacity of the items to be washed. To determine the heat capacity, the dishwasher may comprise a temperature sensor for detecting a temperature representative of the temperature of the items to be washed and means for evaluating the detected temperature and / or their time dependence. The temperature sensor can be arranged in the rinsing chamber or in the circulation circuit and comes into contact with the water circulated during a cleaning cycle, which in turn is in heat exchange with the items to be washed. It should therefore be arranged so that it can at least indirectly detect the temperature of the items to be washed. In addition, a second temperature sensor with associated evaluation means for detecting the temperature of freshly supplied, not yet heated fresh water may be present. In dishwashers, which include a heat accumulator due to design, the second temperature sensor can be in heat exchange with the heat storage. The second temperature sensor and the evaluation means allow the determination of the heat capacity of the load according to the method last described above.
Die Geschirrspülmaschine kann eine Regelungseinheit umfassen, die dazu ausgebildet ist, die Daten des oder der Temperaturfühler zu verarbeiten, also das oben beschriebene Verfahren oder Abschnitte daraus und deren Varianten auszuführen.The dishwasher may comprise a control unit which is designed to process the data of the temperature sensor or sensors, ie to carry out the method described above or sections thereof and their variants.
Das Prinzip der Erfindung wird im Folgenden anhand einer Zeichnung beispielshalber noch näher erläutert. In der Zeichnung zeigen:
- Fig. 1:
- einen Temperaturverlauf im Spülraum einer Geschirrspülmaschine,
- Fig. 2:
- einen Ausschnitt eines derartigen Temperaturverlaufs für unterschiedliche Beladungen,
- Fig. 3:
- eine schematische Schnittansicht einer ersten Geschirrspülmaschine, und
- Fig. 4:
- eine schematische Schnittansicht einer weiteren Geschirrspülmaschine.
- Fig. 1:
- a temperature profile in the washing compartment of a dishwasher,
- Fig. 2:
- a section of such a temperature profile for different loads,
- 3:
- a schematic sectional view of a first dishwasher, and
- 4:
- a schematic sectional view of another dishwasher.
Zwischen dem Reinigungsgang 6 und dem Zwischenspülgang 8 wird die Spülflotte aus der Spülkammer 14 abgepumpt und sauberes, kaltes Frischwasser zugeführt. Das Frischwasser wird während des Zwischenspülgangs 8 für eine Zeitdauer von ca. 5 min umgewälzt und erwärmt sich dabei vor allem durch Kontakt mit bzw. durch Wärmeübertragung von dem aus dem Reinigungsgang 6 noch warmen Spülgut 28 und ggf. einen Wärmetauscher 38 (
In herkömmlichen Geschirrspülmaschinen mit Eigenwärmetrocknung wird das zugeführte, kalte Frischwasser im Klarspülgang 10 während einer vorbestimmten, fest eingestellten Zeit, z. B. ca. 15 min, umgewälzt und dabei mit einer vorbestimmten, festen Heizleistung auf die Anfangstemperatur T0 für den abschließenden Trocknungsvorgang 12, z. B. auf ca. 65°C, erhitzt.In conventional dishwashers with self-heat drying, the supplied, cold fresh water in the rinse
Für die Standardbeladung Bstandard wird die Temperatur während der Aufheizphase im Klarspülgang 10 entsprechend der mittleren Kurve in
Mit dem Abschalten der Heizleistung, die der umgewälzten Spülflotte während des Klarspülgangs 10 zugeführt wird, beginnt der Trocknungsgang 12. Die Temperatur in der Spülkammer verläuft im Wesentlichen entsprechend einer abfallenden Exponentialfunktion. Währenddessen verdampft ein auf dem Spülgut 28 vorhandener Feuchtigkeitsfilm und kondensiert auf einer Kondensationsfläche. Zu einem Zeitpunkt t12 wird als charakteristisches Merkmal eine Temperatur T12 erreicht, die sich anschließend nur noch unwesentlich ändert und das Erreichen eines im Wesentlichen asymptotischen Zustands markiert. Dann ist der Feuchtigkeitsfilm auf dem Spülgut 28 vollständig verdampft und der Trocknungsvorgang 12 kann beendet werden. Da das Erreichen des Zeitpunkts t12 von der Beladung abhängig ist, ist ihre Erfassung für die Regelung des Trocknungsvorgangs hinsichtlich Energieeintrag und Zeitverlauf von wesentlicher Bedeutung.With the switching off of the heating power, which is supplied to the circulated rinsing liquor during the rinse
Erfindungsgemäß wird die Zeitabhängigkeit T1(t) einer tatsächlichen Temperatur T1 in der Spülkammer während der Abkühlphase des Reinigungsgangs 6, also der Temperaturverlauf über der Zeit t, erfasst. Daraus wird die Wärmekapazität der Beladung als Maß für die tatsächliche Beladung Bist gewonnen. Die Zeitabhängigkeit T1(t) der Temperatur während der Abkühlphase folgt im Wesentlichen einer in der Zeit t exponentiellen Funktion
Dabei stellt Cges = C(Bist) + C(Wasser) die gesamte Wärmekapazität dar, die als die Summe der Wärmekapazität C(Bist) der aktuellen Beladung Bist und der Wärmekapazität C(Wasser) des umgewälzten Wassers aufgefasst wird. t0 ist die Zeit, zu der die Abkühlphase beginnt. Die Wärmekapazität C(Wasser) der umgewälzten Spülflotte hängt ab von der eingelassenen Wassermenge, die beim Befüllen der Spülkammer mit Frischwasser gemessen wird. Die Gesamtwärmekapazität Cges wird durch Anpassen einer Fit-Funktion an die Abkühlkurve T1(t) mit Cges als Fit-Parameter bestimmt. Schließlich wird die Wärmekapazitätsänderung C(Bist) durch die aktuelle Beladung Bist durch Subtraktion der gemessenen Wärmekapazität C(Wasser) von der aus der Abkühlkurve T1 (t) hergeleiteten Gesamtwärmekapazität Cges berechnet.It turns C tot = C (B) + C (water) represents the total heat capacity than the sum of the heat capacity C (B) of the current loading is B and the heat capacity C (water) of the circulating water is apprehended. t 0 is the time when the cooling phase begins. The heat capacity C (water) of the circulated rinsing liquor depends on the amount of water introduced, which is measured when filling the rinsing chamber with fresh water. The total heat capacity C ges is determined by fitting a fit function to the cooling curve T1 (t) with C ges as fit parameter. Finally, the heat capacity change C (B ist ) by the current load B is calculated by subtracting the measured heat capacity C (water) from the total heat capacity C ges derived from the cooling curve T1 (t).
Gemäß einer alternativen Ausführungsform der Erfindung zum Bestimmen der Wärmekapazitätsänderung durch die Beladung wird die sich im Zwischenspülgang 8 einstellende Mischungstemperatur gemessen. Dazu wird eine Funktion an die Zeitabhängigkeit der im Zwischenspülgang 8 gemessenen Temperatur durch Fitten angepasst und daraus die sich nach dem Zuführen des kalten Frischwassers zu Beginn des Zwischenspülgangs 8 durch Temperaturausgleich mit dem aus dem Reinigungsgang 6 noch warmen Spülgut 28 einstellende Mischungstemperatur als asymptotischer Näherungswert der Temperatur-Zeit-Abhängigkeit im Zwischenspülgang 8 unter Verwendung bekannter mathematischer Gleichungen bzw. Modelle für die kaloriemetrische Temperaturmischung bestimmt.According to an alternative embodiment of the invention for determining the change in heat capacity through the loading, the mixing temperature which occurs in the intermediate rinse 8 is measured. For this purpose, a function is adapted to the time dependency of the temperature measured in the intermediate rinse 8 temperature by fitting and from which after feeding the cold fresh water at the beginning the intermediate rinse 8 determined by temperature compensation with the setting of the
Der in
Der erste Temperaturfühler 32 ist in der Umwälzpumpe 20 angeordnet und dient zum Erfassen der Temperatur T1 des Wassers bzw. der Spüllauge im Umwälzkreislauf. Er kann jedoch auch an anderen Positionen im Umwälzkreislauf, wie etwa im Zulauf 22a, im Ablauf 22b oder in einer Vertiefung in der Bodenwand der Spülkammer 14 in der Nähe der Öffnung des Ablaufs 22b angeordnet sein. Der zweite Temperaturfühler 34 ist in Kontakt mit der innenseitigen Wand, d. h. der der Spülkammer 14 zugewandten Wand der Beladungstür 16 angeordnet und dient zum Erfassen einer für die Temperatur einer kalten Fläche in der Spülkammer 14 charakteristischen Referenz-Temperatur T2. Er kann auch zum Beispiel in einem Bedienpaneel 18 in der Beladungstür 16 angeordnet sein.The
Der Temperaturfühler 32 in der Umwälzpumpe 20 erfasst einen Temperaturverlauf der Spüllauge über die Zeit und gibt die Daten an die Regelungseinrichtung 58 weiter. Die Temperatur der Spüllauge ist zum einen durch die Ausgangstemperatur des Frischwassers aus der Leitung der Hausinstallation bestimmt. Da das Frischwasser zunächst in die Umwälzpumpe 20 gelangt, bevor es weitergepumpt wird, kann der Fühler 32 seine Temperatur erfassen. Die dem Frischwasser im Weiteren zugeführte Heizleistung ist ebenfalls bekannt. Weitgehend konstant oder von zumindest nur relativ geringem Einfluss sind die Energieverluste über die Leitung 22a und die Wandungen der Spülkammer 14. Somit kann die Regelungseinrichtung 58 die Temperatur der Spüllauge bei Eintritt in die Spülkammer 14 vor Auftreffen auf das Spülgut 28 ermitteln.The
Einen weiteren Einfluss auf die Temperatur der Spüllauge hat die Temperatur des Spülguts 28, an dem sich die Spüllauge aufwärmen oder abkühlen kann. Beim mehrmaligen Umwälzen der Lauge etwa während der Aufheizphase 4 (vgl.
Alternativ oder zusätzlich, nämlich um die Datengrundlage der Regelungseinheit 58 zur Ermittlung der Beladung zu verbessern, kann ein zweiter Temperaturfühler 34 an bzw. in der Beladungstür 16 angebracht sein. Die Beladungstür 16 stellt eine relativ kühle Kondensationsfläche im Trocknungsgang 12 durch Eigenwärme dar. Das im vorausgegangenen Klarspülgang 10 erhitzte Spülgut 28 verdunstet die an ihm haftende Feuchtigkeit, die an der Beladungstür 16 als kühler Kondensationsfläche niederschlägt. Auch der Verlauf der Temperatur der Kondensationsfläche ist ein Indiz für den Grad der Beladung der Spülkammer 14. Denn eine größere Menge an Spülgut 28 kann eine entsprechend höhere Menge an Feuchtigkeit an seiner Oberfläche binden. Die daraufhin einsetzende Kondensation gibt eine größere Wärmemenge an der Kondensationsfläche der Beladungstür 16 ab, als es eine geringere Beladung vermag.Alternatively or additionally, namely to improve the data basis of the
Die in
Die Geschirrspülmaschine nach
Der Wasserspeicher 38 ist in der Form eines parallel zur Seitenwand der Spülkammer 14 angeordneten Behälters ausgebildet und liegt an der Seitenwand an. Der dritte Temperaturfühler 36 ist in Kontakt mit der der Spülkammer 14 zugewandten Wand des Wasserspeichers 38 angeordnet. Zum Verbessern der Effizienz der Wärmetrocknung wird der Wasserspeicher 38 während des Trocknungsgangs 12 mit kaltem Frischwasser befüllt. Dadurch wird die dem Wasserspeicher 38 zugewandte Seitenwand der Spülkammer 14 zu einer gekühlten Kondensationsfläche. Der Temperaturfühler 36 erfüllt damit einerseits den gleichen Zweck wie der Fühler 34 im zuletzt beschriebenen Beispiel. Da er aber ausschließlich im Frischwasserzustrom der Umwälzpumpe 20 liegt, kann er die Ausgangstemperatur des Frischwassers mit höherer Genauigkeit erfassen als der Temperaturfühler 32. Er liefert folglich eine bessere Datengrundlage für die Ermittlung der Beladung durch die Regelungseinheit 58.The
- 22
- Vorspülgang / vorspülenPre-rinse / pre-rinse
- 44
- Aufheizphase / aufheizenHeating up / heating up
- 66
- Reinigungsgang / reinigenCleaning cycle / clean
- 88th
- Zwischenspülgang / zwischenspülenIntermediate rinse / intermediate rinsing
- 1010
- Klarspülgang / klarspülenRinse cycle / rinse
- 1212
- Trocknungsgang / trocknenDrying / drying
- 1414
- Spülkammerrinsing chamber
- 1616
- Beladungstürloading door
- 1818
- Bedienpaneelcontrol panel
- 1919
- Bodenplattebaseplate
- 2020
- Umwälzpumpecirculating pump
- 20s20s
- Steuerleitung für UmwälzpumpeControl line for circulating pump
- 22a22a
- ZulaufIntake
- 22b22b
- Ablaufprocedure
- 2424
- Wassersprüh-DreharmWater spray rotating arm
- 2828
- Spülgutware
- 3030
- Beladungskorbload basket
- 3232
- erster Temperaturfühler (Umwälzkreislauf)first temperature sensor (circulation circuit)
- 3434
- zweiter Temperaturfühler Kondensationsfläche (z.B. Beladungstür)second temperature sensor condensation surface (eg loading door)
- 3636
- dritter Temperaturfühler (Wärmetauscher)third temperature sensor (heat exchanger)
- 3838
- Wärmetauscherheat exchangers
- 4040
- Verbindungsleitungconnecting line
- 4242
- Verbindungsventilconnecting valve
- 42s42s
- Steuerleitung für VerbindungsventilControl line for connection valve
- 4444
- Anschlussconnection
- 4848
- Anschlussleitungconnecting cable
- 5252
- Ablaufleitungdrain line
- 5656
- Heizvorrichtungheater
- 56s56s
- Steuerleitung für HeizvorrichtungControl cable for heating device
- 5858
- Regelungseinheitcontrol unit
Claims (10)
- Method of detecting load-induced change in thermal capacity of a water-conducting domestic appliance, particularly a dishwasher, for optimising of a drying process, characterised by detection of a temperature plot during cooling of the articles to be rinsed.
- Method according to claim 1, characterised in that the temperature plot of rinsing solution, particularly rinsing solution in a circulation circuit, is detected.
- Method according to claim 1 or 2, characterised in that the temperature plot is detected at a condensation surface, particularly of a loading door (16).
- Method according to claim 1 or 2, characterised in that the temperature plot is detected at a water reservoir (38).
- Method according to any one of claims 1 to 4, characterised in that the temperature plot is detected after a mixing process of rinsing solution and fresh water, particularly by detecting the temperature plot of rinsing solution in the circulation circuit and/or by detecting the temperature plot at a condensation surface, particularly at a loading door (16), or by detecting the temperature plot at a water reservoir (38).
- Method according to any one of claims 1 to 5, characterised in that the temperature plot is detected during a predetermined time period.
- Method according to any one of claims 1 to 6, characterised in that the temperature plot is detected within a predetermined temperature interval.
- Method according to any one of claims 1 to 7, characterised in that the temperature plot is detected continuously or at predetermined intervals.
- Method according to any one of claims 1 to 8, characterised in that the temperature plot is detected during a heating-up phase of rinsing solution.
- Water-conducting domestic appliance, particularly dishwasher, at least comprising means for detecting the load-induced storage capacity of thermal energy, characterised by means (32, 34, 36) by which a temperature plot is detected during cooling of articles to be rinsed.
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DE102007059517A DE102007059517A1 (en) | 2007-12-11 | 2007-12-11 | Method for detecting a load-related heat capacity change of a water-conducting household appliance |
PCT/EP2008/065295 WO2009074415A1 (en) | 2007-12-11 | 2008-11-11 | Method for detecting a load-related change in thermal capacity of a water-bearing domestic appliance |
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US (1) | US20100258145A1 (en) |
EP (1) | EP2230984B1 (en) |
CN (1) | CN101896111B (en) |
DE (1) | DE102007059517A1 (en) |
ES (1) | ES2400151T3 (en) |
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DE102008040745A1 (en) * | 2008-07-25 | 2010-01-28 | BSH Bosch und Siemens Hausgeräte GmbH | Dishwashing process for a dishwasher |
DE102009039847A1 (en) * | 2009-09-03 | 2011-03-10 | BSH Bosch und Siemens Hausgeräte GmbH | dishwasher |
DE102009029115A1 (en) * | 2009-09-02 | 2011-03-03 | BSH Bosch und Siemens Hausgeräte GmbH | Dishwasher and method for operating a dishwasher |
JP5126301B2 (en) * | 2010-06-25 | 2013-01-23 | パナソニック株式会社 | dishwasher |
US9895044B2 (en) | 2012-08-28 | 2018-02-20 | Whirlpool Corporation | Dishwasher with controlled dry cycle |
DE102013102157B4 (en) * | 2013-03-05 | 2015-02-19 | Miele & Cie. Kg | Method for operating a dishwasher equipped with a heat pump device |
DK2848180T3 (en) * | 2014-05-20 | 2016-08-22 | V-Zug Ag | Dishwasher with the cooled vessel wall |
US11076742B2 (en) * | 2014-06-27 | 2021-08-03 | Electrolux Appliances Aktiebolag | Dishwasher and method of operating the dishwasher |
CN105286742B (en) * | 2015-10-22 | 2018-05-01 | 佛山市顺德区美的洗涤电器制造有限公司 | The detection method and device of dish-washing machine and its tableware weight |
US20190133412A1 (en) * | 2017-11-06 | 2019-05-09 | Haier Us Appliance Solutions, Inc. | Heating assembly for a washing appliance |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2523752B2 (en) * | 1988-01-25 | 1996-08-14 | 松下電器産業株式会社 | Dishwasher |
DE4013543A1 (en) * | 1990-04-27 | 1991-10-31 | Miele & Cie | Registering residual running time of drying process - in program-controlled laundry dryer by switching off heating source for short time |
JP3135287B2 (en) * | 1991-07-09 | 2001-02-13 | 松下冷機株式会社 | Refrigerator refrigerator control device |
DE19505552A1 (en) * | 1995-02-18 | 1996-08-22 | Aeg Hausgeraete Gmbh | Method for operating a dishwasher |
US5669983A (en) * | 1995-06-08 | 1997-09-23 | Maytag Corporation | Enhanced cycles for an automatic appliance |
DE19538580B4 (en) * | 1995-10-17 | 2008-07-24 | Köhler, Katharina | Method for operating a dishwasher |
US6122840A (en) * | 1998-11-18 | 2000-09-26 | General Electric Company | Systems and methods for determining drying time for a clothes dryer |
US6694990B2 (en) * | 2001-10-15 | 2004-02-24 | General Electric Company | Dishwasher variable dry cycle apparatus |
US6622754B1 (en) * | 2001-12-19 | 2003-09-23 | Whirlpool Corporation | Load-based dishwashing cycle |
DE10255380A1 (en) * | 2002-11-27 | 2004-06-09 | BSH Bosch und Siemens Hausgeräte GmbH | System for recognizing the amount of dishes in the dishwasher rinsing container and dishwasher |
KR20050059677A (en) * | 2003-12-15 | 2005-06-21 | 삼성전자주식회사 | Dishwasher and control method thereof |
JP4321366B2 (en) * | 2004-06-07 | 2009-08-26 | パナソニック株式会社 | dishwasher |
JP4354413B2 (en) * | 2005-01-28 | 2009-10-28 | リンナイ株式会社 | Dishwasher |
US20060236556A1 (en) * | 2005-04-25 | 2006-10-26 | Viking Range Corporation | Dishwasher drying system |
JP4201015B2 (en) * | 2006-05-12 | 2008-12-24 | Toto株式会社 | Dishwasher |
DE102006042486B3 (en) * | 2006-09-07 | 2007-11-15 | Miele & Cie. Kg | Washing goods cleaning and drying method for e.g. dishwasher, involves determining air temperature as surrounding variable at installation location of washing machine during utilization of air-air-heat exchanger |
-
2007
- 2007-12-11 DE DE102007059517A patent/DE102007059517A1/en not_active Withdrawn
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2008
- 2008-11-11 PL PL08860453T patent/PL2230984T3/en unknown
- 2008-11-11 EP EP08860453A patent/EP2230984B1/en active Active
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- 2008-11-11 CN CN200880120222XA patent/CN101896111B/en active Active
- 2008-11-11 US US12/745,699 patent/US20100258145A1/en not_active Abandoned
- 2008-11-11 ES ES08860453T patent/ES2400151T3/en active Active
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CN101896111B (en) | 2013-01-09 |
DE102007059517A1 (en) | 2009-06-18 |
CN101896111A (en) | 2010-11-24 |
EP2230984A1 (en) | 2010-09-29 |
US20100258145A1 (en) | 2010-10-14 |
ES2400151T3 (en) | 2013-04-05 |
PL2230984T3 (en) | 2013-06-28 |
WO2009074415A1 (en) | 2009-06-18 |
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