EP1464268A2 - Verfahren zur Erkennung der Beladung eines Siebsystems einer Geschirrspülmaschine - Google Patents
Verfahren zur Erkennung der Beladung eines Siebsystems einer Geschirrspülmaschine Download PDFInfo
- Publication number
- EP1464268A2 EP1464268A2 EP04006625A EP04006625A EP1464268A2 EP 1464268 A2 EP1464268 A2 EP 1464268A2 EP 04006625 A EP04006625 A EP 04006625A EP 04006625 A EP04006625 A EP 04006625A EP 1464268 A2 EP1464268 A2 EP 1464268A2
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- EP
- European Patent Office
- Prior art keywords
- level
- value
- process variable
- sieve
- rinsing liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- A47L15/42—Details
- A47L15/4202—Water filter means or strainers
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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
- A47L15/0049—Detection or prevention of malfunction, including accident prevention
-
- 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
- A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
- A47L15/4225—Arrangements or adaption of recirculation or discharge pumps
-
- 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
- A47L2401/09—Water level
-
- 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
- A47L2501/26—Indication or alarm to the controlling device or to the user
Definitions
- the invention relates to a method for detecting the Loading a sieve system in a dishwasher.
- the dishwashing process in the dishwasher contains particles Contamination with the rinsing liquid in the device sump, rinsed.
- a sieve system in the circulation circuit of the dishwasher provided on which the solid components are deposited become.
- the screening system is generally on the Suction side of the circulation pump arranged.
- DE 44 00 877 C2 discloses a method in which, with the circulation pump running, a dynamic level which is established within the strainer neck in the drain pan is measured. A height difference is determined from the level outside the screen nozzle and the level inside the screen nozzle. The height difference value is limited and a measured value overshoot of the limited height difference is used as a criterion for contamination of the sieve.
- the object of the invention is now a method for detection the sieve loading to provide the aforementioned Disadvantages in the prior art, at least in part overcomes or at least diminishes.
- a dishwasher which has a circulating circle with a Screening system and a circulating pump for circulating the washing liquid is comprised of one, one level of First value of a process variable assigned to the rinsing liquid and at least one, a level of rinse liquid assigned second value of the process variable or from at least one, a first value of a process variable corresponding first level of the rinsing liquid and / or at least one, corresponding to a second value of the process variable second level of rinsing liquid at least a loading characteristic value is determined and as a measure for the sieve loading used.
- the process size is in clear connection with the speed of the circulation pump, is, in particular, a circulation pump speed, a circulation pump delivery pressure, an electrical delivery rate the circulation pump, a mechanical delivery rate of the circulation pump, a volume of the rinsing liquid or a volume flow the flushing liquid or a flow rate the rinsing liquid.
- the effect is exploited that the level of the flushing liquid in the direction of flow in front of the screening system (hereinafter also called level in front of the screening system) or on the upstream side of the screening system or on the upstream side and in the flow direction according to the screening system (hereinafter also referred to as level designated after the screening system) or on the outflow side of the screening system or downstream, a different one Height, which is dependent on the pressure loss of the Screen system.
- the pressure loss of the screens is a function the sieve loading and the flow rate the sieves.
- the speed of the sieve system downstream circulation pump or another in a clear Relationship with the speed of the process variable can be increased, the level of the rinsing liquid drops in the direction of flow after the sieves and the level on the upstream side of the sieves rises accordingly on both the unloaded and the loaded sieve system.
- a loading characteristic value which consists of one level each the first and second values assigned to the rinsing liquid a process variable that is clearly related to the speed of the circulation pump is, can be determined therefore be used as a measure of the sieve loading.
- the loading characteristic value can, for example, thereby be determined that the first and second value of the Process size at the same level or preferably in each case different levels determined and this as well as possibly at least one reference value in a mathematical Relationship to each other.
- a loading characteristic value that of at least one, a first Value one in a clear connection with the speed standing process size corresponding first level of Rinsing liquid and at least one, a second value that is clearly related to the speed Process size corresponding to the second level of the rinsing liquid is determined, advantageously as a measure of the Sieve loading can be used. It can also in this Case, when using a suitable measuring device, it may also be possible to load the sieve from a loading characteristic value, that of just one, a first or a second Value of a process variable, corresponding level of the rinsing liquid was determined to derive. This value can then, for example, with a corresponding reference value for a maximally loaded or unloaded sieve system be compared.
- a great advantage of the method according to claim 1 over The state of the art is that for detection the sieve loading only on one side of the sieve system a measuring device in the dishwasher is necessary is. This can on the one hand reduce the costs of a second Measuring devices can be saved. Furthermore, there is none additional opening in the drain pan or in the rinsing tank attached, which represents an additional leak and for this reason it is difficult to seal.
- the procedure can also be performed at any time of the rinsing process can be carried out without interference if the level of the rinsing liquid after the sieve system, so is determined in the cleaned rinsing liquid.
- the load limit of the screening system is determined by the process safely recognized according to the invention. This will always an optimal cleaning result guaranteed.
- at downstream circulation pump becomes a lack of rinsing liquid on the suction side of the circulation pump and the so associated disadvantages, for example reduced hydraulic Pump performance, increased noise or Foaming, excluded.
- the method according to claim 1 enables simple way and at any time during the rinsing process an exact determination of the current degree of pollution of the screening system. This can also make incomplete Cleaning or backwashing processes are recognized. incomplete Cleaning the screening system can be negative affect the washing result as both lye and also dirt particles carried over into the next rinsing process become. Furthermore, the screening system reaches incomplete cleaning faster the loading limit. If incomplete cleaning processes are recognized, can take the necessary measures in good time, for example backwashing can be initiated. Leading for a more economical flushing operation and an improved one Cleaning performance.
- the at least one loading parameter becomes a difference from the at least one first value of the process variable or the level and the at least one second Value of the process variable or level or at least a first value of the process variable or level and / or the at least one second value of the process variable or the level and at least one reference value the process size or level.
- the difference or the difference amount is preferred first and second values of the process variables or levels used as a measure of the sieve loading.
- At least one Reference value for example a maximum or minimum first and / or second value for the process variable or the level
- the at least a first value and / or to form the at least one second value and this difference as a measure of the sieve loading or to be used as a load parameter.
- the at least one loading characteristic value as a quotient from the at least one first value of the process variable or level and the at least a second value of the process variable or level or as a quotient from the at least one first Value of the process variable or level and / or the at least a second value of the process variable or Levels and at least one reference value of the process variable or the level or as a quotient from the at least a first value of the process variable or level and / or the at least one second value of the process variable or the level and at least one mathematical Function the at least a first value of the process variable or the level and / or the at least one comprising the second value of the process variable or level, in particular at least one sum and / or at least a difference and / or at least one quotient and / or at least one product.
- the at least one loading characteristic value can preferably be used as the quotient of mathematical functions at least a first value of the process variable or Levels and / or the at least one second value of Process size or level comprising, in particular at least a sum and / or at least one difference and / or at least one quotient and / or at least a product.
- a load characteristic value can be determined be the advantageous as a measure of the sieve loading can be used. They are also appropriate all other calculation types or relationships between the respective first and second values of Process size or level and possibly a reference value for determining one as a measure for one Screen loading suitable loading characteristic possible.
- the present Invention is made up of at least one, an upper (or also the first) assigned to the level of the rinsing liquid Value of a process variable and at least one, one lower (or second) level of the rinsing liquid assigned second value of the process variable at least one Load characteristic value determined and as a measure of the sieve loading used, the upper and lower levels the rinsing liquid is always on one side of the sieve system; both levels in front of the screening system or both Find or adjust levels according to the screening system.
- a minimal Value of the process size through a maximum upper level the rinsing liquid after the sieve system (or downstream) or a minimal lower level of rinse liquid limited in front of the screening system (or upstream).
- the work level is usually preset at the factory and selected so that by the im Dishwasher circulated amount of washing liquid an optimal Cleaning result is achieved. If you exceed one the work level, i.e. a lower one Speed of the circulation pump or one with this in clear Related process size there is a risk that the pressure in the lines is not sufficient to a distribution necessary for a good cleaning result to ensure the washing liquid in the washing container.
- a maximum value the process size by a minimal lower level of Flushing liquid according to the sieve system or a maximum upper level of the rinsing liquid in front of the sieve system is limited becomes.
- the minimum lower level according to the screening system or the maximum upper level in front of the screening system are to be selected so that there is still sufficient rinsing liquid can flow through the screening system to all necessary Feed lines in the circulation circuit. This ensures that determining the sieve loading to everyone Time of the rinsing process can be carried out without that there is a lack of rinsing liquid according to the sieving system.
- With a circulation pump downstream of the screening system is therefore always an optimal operation of the Pump guaranteed. If the pump is no longer enough Rinsing liquid but instead partially draws in air would also be the result of determining the sieve load be falsified.
- the Level of the rinsing liquid in a drain pan of the rinsing tank determines which is at the bottom of the rinse tank located and into which the screening system is introduced.
- the level (s) of the rinsing liquid determined according to the screening system. That has the advantage, that the impurities are filtered out of the rinsing liquid are and therefore do not affect the measuring device can.
- the levels in front of the sieve should be determined the measuring device in the drain pan in front of the sieve or in the washing container.
- the upper level of the rinsing liquid, which the least a first value is assigned to the process variable, and that lower level of the rinsing liquid, which the at least one second values are assigned to the process variable, or that corresponds to a first value of a process variable first level of rinse liquid and that, a second Value of the process variable corresponding to second level of Flushing liquid are preferably mixed with at least one Level measuring device determined.
- the determination of the upper and lower levels before or after the screening system Screening system can be optionally with two or with only one Sensor device take place.
- a level measuring device can, for example, an electrical sensor with a Pair of electrodes or an optical level sensor with associated Switching device or a pressure sensor used become.
- a measuring device for setting the working level is used in the dishwasher. This saves the installation of another measuring device.
- a measuring device for determining the static Pressure of the flushing liquid column before or after Screening system especially an analog pressure sensor
- an analog pressure sensor enables an exact statement about the height of the liquid column or the level, for example in the drain pan and thus also the determination of the loading parameter from only one, corresponding to a value of a process variable Level.
- a level of rinse liquid be monitored according to the screening system.
- the loading characteristic can then, for example, be a an increase or decrease in the speed of the circulation pump or another clearly related to the speed of the process variable by a predetermined Amount or achievable in a given time window minimum or maximum level of rinsing liquid describe.
- the loading parameter or the minimum lower Level can, for example, during a start-up process the circulation pump can be determined.
- the loading reference value the loading parameter from the, the upper level of Flush liquid assigned first value of the process variable and that assigned to the lower level of the rinsing liquid second value of the process variable or the loading parameter from the, a first value of a process variable corresponding first level of the rinsing liquid and / or that corresponds to a second value of the process variable second level of rinsing liquid when the strainer is empty equivalent.
- the determined loading parameters can then be compared to this load reference value and it can be determined how far the sieve loading is advanced. This is an advantage if, for example an incomplete cleaning of the sieve was detected shall be.
- the loading reference value the loading parameter from the, the upper level of Flush liquid assigned first value of the process variable and that assigned to the lower level of the rinsing liquid second value of the process variable or the loading parameter from the, a first value of a process variable corresponding first level of the rinsing liquid and / or that corresponds to a second value of the process variable second level of rinsing liquid at a maximum Sieve loading corresponds.
- the maximum sieve load can any limit load, that of an incomplete Cleaning the sieves down to a complete clogged strainer assigned to different conditions can be.
- the loading reference value for the unloaded sieve system or the loaded one Screening system the first time the dishwasher is started determined, preferably at the factory, or will be at the factory specified.
- the cleaning process when reached the maximum sieve load triggered a sieve cleaning process.
- the cleaning process can then, for example include tangential rinsing or backwashing of the screening system.
- the method according to the invention is advantageous during operation of the dishwasher, preferably while filling the dishwasher with liquid carried out.
- the sieve system is at the beginning of each Tested rinsing process is always optimal operation the dishwasher. It can be an advantage the sieve system must also be closed at the end of a rinsing process test and clean if necessary so that the Do not bake contaminants between rinses or bake on the sieve.
- FIG. 1 to 6 Corresponding parts and sizes are shown in FIG. 1 to 6 provided with the same reference numerals.
- FIG. 1 illustrates the basic operating conditions in a rinsing container with a drain pan when the load is high Screening system and low circulation pump speed.
- a washing container 1 On the ground of a washing container 1 partially shown is one Drain pan 2 attached.
- the screening system exists from the sieve plate 3 and a strainer 4, the is placed in the middle of the sieve plate 3 and into the drain pan 2 protrudes.
- the strainer 4 is on the side facing away from the washing compartment 1 and is sufficient to the suction port of an emptying pump 5.
- the screening system is usually made up of several sieves with different ones Opening widths built up.
- the area of the sieve plate 3, the sieve nozzle 4 covers larger openings than the adjacent ones Areas so that the dirt particles in the strainer 4 can get there and from there with the help of the drain pump 5 will be held.
- On the drain pan 2 is laterally above the floor of the intake manifold of the circulation pump 6 attached.
- the rinsing liquid usually water, flows over you inlet not shown here in the rinsing container 1 and thence to the drain pan 2 to the drain pan 2 a working level has been reached, which is also here not shown level measuring device between the strainer 4 and the outer wall of the drain pan 2 determined becomes.
- the rinsing liquid through the circulation pump 6 in a circle, so it turns depending the flow velocity before and after the sieve nozzle 4 each with a different level of Flushing liquid.
- the flow rate of the Flushing liquid can, for example, on the speed of the Circulation pump 6 can be set.
- 1 shows the liquid levels before and after the strainer 4 at lower Pump speed n *.
- the liquid level at the Suction side of the circulation pump 6, which is referred to below as the upper one Level 7 is lower than the liquid level inside the strainer 4.
- FIG 2 shows a schematic diagram of the operating conditions in the rinsing tank with drain pan described above with a loaded screening system and high circulation pump speed n.
- the liquid level on the suction side of the Circulation pump 6, hereinafter referred to as lower level 8, here is significantly lower than the liquid level 7 at low speed n * (FIG 1). That’s it to justify that with increased flow velocity the pressure loss of the screening system 3, 4 is greater and thus in front of the sieve system 3, 4 more rinsing liquid must be around the necessary fluid pressure for Overcoming the sieve system 3, 4 to build. From the, the Upper level 7 (FIG 1) associated circulation pump speed n * and the circulation pump speed assigned to the lower level 8 (FIG.
- ⁇ n can also be a ratio n / n * of the two Speeds n and n * that are necessary to determine the liquid level between the upper level 7 and the lower Level 8 change, or another that is in the present Patent application claimed mathematical Relationships between the speed values n and n * as load parameters used to monitor or determine the sieve load become.
- FIG. 3 shows the water volume in the dishwasher as a function of the speed of the circulation pump. On the x axis is the speed n of the circulation pump and on the y-axis the volume of water V is plotted.
- the one as solid Lines K1 to K3 shown in lines are an unloaded one Allocate sieve system.
- the as dashed lines curves K4 to K6 represent the behavior of a loaded sieve system.
- the lower level 8 and the upper level 7 of the rinsing liquid is in the drain pan 2 determined according to the screening system or screen connector 4 (see FIG. 1 and 2).
- the dependence of the water volume illustrated in the diagram can be independent of the circulation pump speed determine from the level measuring device used.
- A was developed especially for the diagram shown in FIG Measuring device for determining the working level in the drain pan, as used in practice takes place, provided.
- the lower level 8 and the upper one Level 7 of the rinsing liquid are thereby Switching hysteresis of the level measuring device specified.
- the upper level 7 corresponds to the switching point (SP) of the level measuring device. When this level is reached, practice adding liquid to the rinse tank interrupted.
- the lower level 8 corresponds to the switchback point (RSP) of the level measuring device. will this In practice, the liquid level is undershot triggered in the rinse tank for as long as until the switching point (SP) or, the upper level 7 is reached.
- Illustrate curves K3 and K6 in the diagram the water requirement at a constant upper level (SP) and the curves K2 and K5 at one kept constant lower level (RSP).
- the curve K1 in the diagram represents the theoretical dependency of the volume of water in the dishwasher of the circulation pump speed for an unloaded sieve
- the rinsing liquid is the dishwasher and a sieve system with several Seven led.
- the parallel curves K2 and K3 as a function of Circulation pump speed.
- the speed of the circulation pump increases, the level of the rinsing liquid drops after the Screen system.
- the volume difference ⁇ V between the two solid lines corresponds the volume difference in the drain pan between the switch point and the switch back point.
- the curves K2 and K3 are shifted in parallel by exactly this volume difference.
- Curve K4 in the diagram represents the theoretical dependency of the volume of water in the dishwasher of the circulation pump speed for a loaded sieve. It can be clearly seen that when the sieve is loaded the Water volume much stronger with increasing speed increases than with an unloaded sieve.
- the two curves K5 and K6 show the actual dependence of the water volume in the dishwasher from the circulation pump speed with loaded sieve system. Illustrate K5 and K6 in turn the water requirement at a constant held upper level (SP) and a constant held lower level (RSP).
- SP constant held upper level
- RSP constant held lower level
- the water volume increases when loaded Screening system with increasing speed very much more than with an unloaded sieve system.
- the volume difference Corresponds to ⁇ V between curves K5 and K6 again the volume difference in the drain pan between the switch point and the switch back point.
- the speed of the circulation pump is reduced starting from a high speed n 1 , n 2 until the water volume in the dishwasher decreases by ⁇ V at a constant level, a reduction to the speed n 2 * will suffice when the strainer is loaded, and when the strainer is not loaded the speed must be reduced to the lower value n 1 *.
- the necessary speed difference ⁇ n 2 for the loaded sieve is therefore smaller than ⁇ n 1 for the unloaded sieve and that in the entire speed range shown in the diagram.
- the loading of the screening system can be derived from this context.
- the rinsing liquid level according to the screening system as a function of the speed of the circulation pump.
- the speed n of the circulating pump is plotted on the x-axis and the flushing liquid level N on the y-axis.
- the curves K1 to K3 shown as solid lines are to be assigned to the unloaded sieve system.
- the curves K4 to K6 shown in dashed lines illustrate the behavior when the sieve system is loaded.
- the lower level N RSP and the upper level N SP of the rinsing liquid are determined in the drain pan after the sieve system by the switching points of the level measuring device (see FIG. 3).
- the curves K1 to K3 and K4 to K6 illustrate the change in the rinsing liquid level with a constant water volume in the dishwasher.
- K2 and K5 refer to the same value for the constant water volume.
- the value here corresponds to the water volume required to reach the lower level N RSP at a given speed.
- the same, constant water volume is also used for K4 and K6.
- the volume of water corresponds to the volume that is necessary for reaching the upper level N SP at the specified speed.
- the level difference ⁇ N between the curves K2 and K3 or K5 and K6 corresponds to the height difference in the drain pan between the switching point and the switch-back point of the level measuring device.
- the curves K1 and K4 represent the theoretical dependency the liquid level from the circulation pump speed for an unloaded sieve and a loaded sieve consideration of the overall system results in the unloaded Screening system curves K2 and K3 and when loaded Screening system curves K5 and K6.
- the speed of the circulation pump is reduced starting from a high speed n 1 (unloaded sieve) or n 2 (loaded sieve), until the level in the drain pan drops by the value ⁇ N between the upper and lower level specified by the switching points of the level measuring device If the sieve is loaded, a reduction by a smaller speed to the speed n 2 * is sufficient. If the sieve is not loaded, the speed should be reduced by a larger speed to the lower value n 1 *. The required speed difference ⁇ n 2 is therefore smaller for the loaded screen than ⁇ n 1 , for the unloaded screen (in the entire speed range shown). This results in the same dependency of the sieve loading on the speed difference as in FIG. 3.
- the loading of the screening system could also be derived directly from the relationship between water volume V and circulation pump speed n or rinsing liquid level N and circulation pump speed n shown in FIG. 3 and FIG.
- the amount of the slope of the curves K2 or K3 and K5 or K6 in the set speed range could be determined from FIG.
- the slopes for the unloaded and the loaded sieve in FIG. 3 result from the quotient of the volume difference .DELTA.V by loading characteristic or speed difference .DELTA.n 1 , or .DELTA.n 2 and in FIG. 4 from the quotient from level difference .DELTA.N by loading characteristic or Speed difference ⁇ n 1 , or ⁇ n 2 .
- the quotient determined is higher for the loaded sieve than for the unloaded sieve.
- Is the level measuring device in the drain pan 2 behind the sieve system 3, 4, in particular sieve nozzle 4, for example designed as an analog pressure sensor with which the liquid level in the drain pan 2 after Strainer 4 can be determined exactly, can be used to determine the sieve loading is also a loading characteristic that only from a corresponding speed value n lower level 8 is determined, sufficient if this is compared, for example, with a reference value.
- a second level N 1 *, N 2 * is preferably measured at a second value of the rotational speed n both in the unloaded and in the loaded sieve and the loading characteristic value is determined from the two levels. If, for example, the speed n of an unloaded sieve is increased from a predefined first value n *, which in extreme cases can also be 0, that is to say when the circulating pump 6 is at a standstill, to a predefined second value n, the level N decreases after the sieve connection 4 from a first level N 1 by the amount ⁇ N 1 to a second level N 1 *.
- the rinsing liquid level decreases from a first level N 2 by the amount ⁇ N 2 to a second level N 2 *.
- the level of the rinsing liquid decreases by a larger amount than when the sieve is loaded, the loading characteristic value ⁇ N 2 is therefore greater than the loading characteristic value ⁇ N 1 .
- the sieve loading can thus be monitored or determined by comparing the load characteristics determined with one another or with a corresponding load reference value for an unloaded or maximally loaded sieve system.
- a time interval in particular between several seconds and a fraction of a second, preferably 1/2 s, can also be predetermined in this embodiment of the invention, in which the level change or the current level are determined, one in each case in this time interval constant rapid increase or decrease in speed occurs.
- the circulation pump can be stopped for a few seconds to determine the sieve loading, ie the speed can be set to 0, and then started again.
- the liquid level in the drain pan is continuously monitored for at least half a second, for example with the analog pressure sensor.
- the minimum level after the drain nozzle 4, which is measured in this time window or time interval, is then proportional to the degree of loading of the screening system.
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Abstract
Description
- 1
- Spülbehälter
- 2
- Ablaufwanne
- 3
- Siebplatte
- 4
- Siebstutzen
- 5
- Entleerungspumpe
- 6
- Umwälzpumpe
- 7
- oberes Niveau
- 8
- unteres Niveau
- K1 bis K6
- Kurven
Claims (19)
- Verfahren zur Erkennung der Beladung eines Siebsystems einer Geschirrspülmaschine, die einen Umwälzkreis mit einem Siebsystem und eine Umwälzpumpe zum Umwälzen der Spülflüssigkeit umfasst,
bei dem aus wenigstens einem, einem Niveau der Spülflüssigkeit zugeordneten ersten Wert einer Prozessgröße und wenigsten einem, einem Niveau der Spülflüssigkeit zugeordneten zweiten Wert der Prozessgröße oder aus wenigstens einem, einem ersten Wert einer Prozessgröße entsprechenden'ersten Niveau der Spülflüssigkeit und/oder wenigsten einem, einem zweiten Wert der Prozessgröße entsprechenden zweiten Niveau der Spülflüssigkeit
wenigstens ein Beladungskennwert ermittelt und als Maß für die Siebbeladung herangezogen wird
wobei die Prozessgröße in eindeutigem Zusammenhang mit der Drehzahl der Umwälzpumpe steht, insbesondere eine Umwälzpumpendrehzahl, ein Umwälzpumpenförderdruck, eine elektrische Förderleistung der Umwälzpumpe, eine mechanischen Förderleistung der Umwälzpumpe, ein Volumen der Spülflüssigkeit oder ein Volumenstrom der Spülflüssigkeit oder eine Strömungsgeschwindigkeit der Spülflüssigkeit ist. - Verfahren nach Anspruch 1,
bei dem der wenigstens eine Beladungskennwert als eine Differenz aus dem wenigstens einen ersten Wert der Prozessgröße bzw. des Niveaus und dem wenigstens einen zweiten Wert der Prozessgröße bzw. des Niveaus oder dem wenigstens einen ersten Wert der Prozessgröße bzw. des Niveaus und/oder dem wenigstens einen zweiten Wert der Prozessgröße bzw. des Niveaus und wenigstens einem Referenzwert der Prozessgröße bzw. des Niveaus ermittelt wird. - Verfahren nach Anspruch 1 oder Anspruch 2,
bei dem der wenigstens eine Beladungskennwert als ein Quotient aus dem wenigstens einen ersten Wert der Prozessgröße bzw. des Niveaus und dem wenigstens einen zweiten Wert der Prozessgröße bzw. des Niveaus oder dem wenigstens einen ersten Wert der Prozessgröße bzw. des Niveaus und/oder dem wenigstens einen zweiten Wert der Prozessgröße bzw. des Niveaus und wenigstens einem Referenzwert der Prozessgröße bzw. des Niveaus oder dem wenigstens einen ersten Wert der Prozessgröße bzw. des Niveaus und/oder dem wenigstens einen zweiten Wert der Prozessgröße bzw. des Niveaus und wenigstens einer mathematischen Funktion den wenigstens einen ersten Wert der Prozessgröße bzw. des Niveaus und/oder den wenigstens einen zweiten Wert der Prozessgröße bzw. des Niveaus umfassend, insbesondere wenigstens einer Summe und/oder wenigstens einer Differenz und/oder wenigstens einem Quotient und/oder wenigstens einem Produkt, oder mathematischen Funktionen den wenigstens einen ersten Wert der Prozessgröße bzw. des Niveaus und/oder den wenigstens einen zweiten Wert der Prozessgröße bzw. des Niveaus umfassend, insbesondere wenigstens einer Summe und/oder wenigstens einer Differenz und/oder wenigstens einem Quotient und/oder wenigstens einem Produkt, ermittelt wird. - Verfahren nach einem oder mehreren der vorhergehenden Ansprüche,
bei dem aus wenigstens einem, einem oberen Niveau der Spülflüssigkeit zugeordneten ersten Wert einer Prozessgröße und wenigsten einem, einem unteren Niveau der Spülflüssigkeit zugeordneten zweiten Wert der Prozessgröße wenigstens ein Beladungskennwert ermittelt und als Maß für die Siebbeladung herangezogen wird. - Verfahren nach Anspruch 4,
bei dem ein minimaler Wert der Prozessgröße durch ein maximales oberes Niveau der Spülflüssigkeit nach dem Siebsystem oder ein minimales unteres Niveau der Spülflüssigkeit vor dem Siebsystem begrenzt wird. - Verfahren nach Anspruch 5,
bei dem der minimale Wert Prozessgröße durch das Arbeitsniveau der Geschirrspülmaschine bestimmt wird. - Verfahren nach einem oder mehreren der Ansprüche 4 bis 6,
bei dem ein maximaler Wert der Prozessgröße durch ein minimales unteres Niveau der Spülflüssigkeit nach dem Siebsystem oder ein maximales oberes Niveau der Spülflüssigkeit vor dem Siebsystem begrenzt wird. - Verfahren nach einem oder mehreren der vorhergehenden Ansprüche,
bei dem das Niveau der Spülflüssigkeit in einer Ablaufwanne des Spülbehälters bestimmt wird. - Verfahren nach Anspruch 8,
bei dem das Niveau der Spülflüssigkeit nach dem Siebsystem bestimmt wird. - Verfahren nach einem oder mehreren der vorhergehenden Ansprüche,
bei dem das obere Niveau der Spülflüssigkeit, dem der wenigstens eine erste Werte der Prozessgröße zugeordnet ist, und das untere Niveau der Spülflüssigkeit, dem der wenigstens eine zweite Werte der Prozessgröße zugeordnet ist, oder
das, einem ersten Wert einer Prozessgröße entsprechende erste Niveau der Spülflüssigkeit und das, einem zweiten Wert der Prozessgröße entsprechende zweite Niveau der Spülflüssigkeit mit wenigstens einer Niveaumesseinrichtung bestimmt werden. - Verfahren nach Anspruch 10,
bei dem als Niveaumesseinrichtung eine Messeinrichtung zur Einstellung des Arbeitsniveaus in der Geschirrspülmaschine verwendet wird. - Verfahren nach Anspruch 10 oder 11,
bei dem als Niveaumesseinrichtung eine Messeinrichtung zur Bestimmung des statischen Drucks der Spülflüssigkeitssäule vor oder nach dem Siebsystem, insbesondere ein analoger Drucksensor, verwendet wird. - Verfahren nach einem oder mehreren der Ansprüche 10 bis 12,
bei dem das obere Niveau der Spülflüssigkeit dem der wenigstens eine erste Werte der Prozessgröße zugeordnet ist, und das untere Niveau der Spülflüssigkeit, dem der wenigstens eine zweite Werte der Prozessgröße zugeordnet ist, durch die Schaltpunkte der Niveaumesseinrichtung bestimmt werden. - Verfahren nach einem oder mehreren der vorhergehenden Ansprüche,
bei dem der wenigstens eine ermittelte Beladungskennwert mit einem oder mehreren Beladungsreferenzwert(en) verglichen wird. - Verfahren nach Anspruch 14,
bei dem der Beladungsreferenzwert dem Beladungskennwert aus dem, dem oberen Niveau der Spülflüssigkeit zugeordneten ersten Wert der Prozessgröße und/oder dem, dem unteren Niveau der Spülflüssigkeit zugeordneten zweiten Wert der Prozessgröße oder
dem Beladungskennwert aus dem, einem ersten Wert einer Prozessgröße entsprechenden ersten Niveau der Spülflüssigkeit und/oder dem, einem zweiten Wert der Prozessgröße entsprechenden zweiten Niveau der Spülflüssigkeit bei unbeladenem Siebsystem und/oder bei maximaler Siebbeladung entspricht. - Verfahren nach einem oder mehreren der vorhergehenden Ansprüche,
bei dem der Beladungsreferenzwert für das unbeladene oder das maximal beladene Sieb beim ersten Anfahren der Geschirrspülmaschine ermittelt wird, vorzugsweise werkseitig, oder werkseitig vorgegeben wird. - Verfahren nach einem oder mehreren der vorhergehenden Ansprüche,
bei dem bei Erreichen der maximalen Siebbeladung ein Siebreinigungsvorgang ausgelöst wird. - Verfahren nach einem oder mehreren der vorhergehenden Ansprüche,
bei dem bei Erreichen der maximalen Siebbeladung eine Anzeige ausgelöst wird. - Verfahren nach einem oder mehreren der vorhergehenden Ansprüche,
das während des Betriebs der Geschirrspülmaschine, vorzugsweise während des Befüllens der Geschirrspülmaschine mit Flüssigkeit durchgeführt wird.
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DE10314892 | 2003-04-01 | ||
DE2003114892 DE10314892A1 (de) | 2003-04-01 | 2003-04-01 | Verfahren zur Erkennung der Beladung eines Siebsystems einer Geschirrspülmaschine |
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EP1464268A2 true EP1464268A2 (de) | 2004-10-06 |
EP1464268A3 EP1464268A3 (de) | 2008-10-15 |
EP1464268B1 EP1464268B1 (de) | 2013-08-07 |
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010112331A3 (de) * | 2009-04-02 | 2010-11-25 | BSH Bosch und Siemens Hausgeräte GmbH | Verfahren zum betreiben eines wasserführenden haushaltsgeräts |
WO2011015313A1 (en) * | 2009-08-05 | 2011-02-10 | Electrolux Home Products Corporation N.V. | Washer, such as a dishwasher or a washing machine, and method for operating a washer |
WO2011138118A1 (de) * | 2010-05-04 | 2011-11-10 | BSH Bosch und Siemens Hausgeräte GmbH | Geschirrspülmaschine mit einem siebsystem |
WO2012095315A3 (de) * | 2011-01-13 | 2012-12-20 | Winterhalter Gastronom Gmbh | Geschirrspülmaschine mit reinigungsvorrichtung sowie reinigungsvorrichtung |
US8845814B2 (en) | 2009-08-05 | 2014-09-30 | Electrolux Home Products Corporation N.V. | Washer such as a dishwasher or a washing machine and method for operating a washer |
WO2015135801A1 (de) * | 2014-03-10 | 2015-09-17 | BSH Hausgeräte GmbH | Trockner mit spülvorrichtung und flusendepot sowie verfahren zu dessen betrieb |
US9192280B2 (en) | 2012-12-07 | 2015-11-24 | Electrolux Home Products, Inc. | Method and system for detecting and removing a clogging condition of a filter in a dishwasher |
US9751115B2 (en) | 2009-08-05 | 2017-09-05 | Electrolux Home Products Corporation N.V. | Washer such as a dishwasher or a washing machine and method for operating a washer |
US11141039B2 (en) | 2017-02-24 | 2021-10-12 | Electrolux Appliances Aktiebolag | Dishwasher, method and control system for handling clogging condition |
Families Citing this family (9)
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DE102004016270B4 (de) * | 2004-04-02 | 2006-02-23 | Boesche Marketing Gmbh | Reinigungsvorrichtung mit wenigstens einem Reinigungsbereich, vorzugsweise Geschirrspülmaschine |
DE102007061036B4 (de) * | 2007-12-18 | 2022-09-15 | BSH Hausgeräte GmbH | Wasserführendes Haushaltsgerät mit einem selbstreinigenden Filtersystem |
DE102014206119B4 (de) * | 2013-12-18 | 2016-09-22 | BSH Hausgeräte GmbH | Verfahren zum Betreiben einer Pumpe in einem Haushaltsgerät und wasserführendes Haushaltsgerät |
CN104665740B (zh) * | 2015-02-11 | 2017-06-06 | 佛山市顺德区美的洗涤电器制造有限公司 | 一种洗碗机及其洗涤加热控制方法和装置 |
CN104814706B (zh) * | 2015-04-22 | 2017-08-25 | 佛山市顺德区美的洗涤电器制造有限公司 | 一种洗碗机及其加热洗涤保护控制方法和装置 |
DE102017207214A1 (de) * | 2017-04-28 | 2018-10-31 | BSH Hausgeräte GmbH | Wasserführendes Haushaltsgerät und Verfahren zum Betreiben eines wasserführenden Haushaltsgeräts |
DE102022211201A1 (de) | 2022-10-21 | 2024-05-02 | BSH Hausgeräte GmbH | Verbesserte Ermittlung der Leerlaufstromaufnahme von Laugenpumpen |
DE102022211199A1 (de) | 2022-10-21 | 2024-05-02 | BSH Hausgeräte GmbH | Fehlererkennung bei einem Betrieb von Laugenpumpen |
DE102022211200A1 (de) | 2022-10-21 | 2024-05-02 | BSH Hausgeräte GmbH | Adaptive Drehzahlanpassung von Freistrompumpen in wasserführenden Haushaltsgeräten |
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DE3626351A1 (de) * | 1986-08-04 | 1988-02-11 | Licentia Gmbh | Verfahren zum betreiben einer geschirrspuelmaschine |
DE4400877C2 (de) * | 1994-01-14 | 1997-07-31 | Aeg Hausgeraete Gmbh | Verfahren zur Erkennung verschmutzter Siebe in Haushalt-Geschirrspülmaschinen |
DE19828768C2 (de) * | 1998-06-27 | 2002-12-05 | Aeg Hausgeraete Gmbh | Verfahren zum Betreiben einer Geschirrspülmaschine mit einer Umwälzpumpe |
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WO2010112331A3 (de) * | 2009-04-02 | 2010-11-25 | BSH Bosch und Siemens Hausgeräte GmbH | Verfahren zum betreiben eines wasserführenden haushaltsgeräts |
AU2010281008B2 (en) * | 2009-08-05 | 2016-06-09 | Electrolux Home Products Corporation N.V. | Washer, such as a dishwasher or a washing machine, and method for operating a washer |
WO2011015313A1 (en) * | 2009-08-05 | 2011-02-10 | Electrolux Home Products Corporation N.V. | Washer, such as a dishwasher or a washing machine, and method for operating a washer |
US8845813B2 (en) | 2009-08-05 | 2014-09-30 | Electrolux Home Products Corporation N.V. | Washer, such as a dishwasher or a washing machine, and method for operating a washer |
US8845814B2 (en) | 2009-08-05 | 2014-09-30 | Electrolux Home Products Corporation N.V. | Washer such as a dishwasher or a washing machine and method for operating a washer |
RU2543466C2 (ru) * | 2009-08-05 | 2015-02-27 | Электролюкс Хоум Продактс Корпорейшн Н.В. | Моечная машина, такая как посудомоечная машина или стиральная машина, и способ эксплуатации моечной машины |
US9751115B2 (en) | 2009-08-05 | 2017-09-05 | Electrolux Home Products Corporation N.V. | Washer such as a dishwasher or a washing machine and method for operating a washer |
WO2011138118A1 (de) * | 2010-05-04 | 2011-11-10 | BSH Bosch und Siemens Hausgeräte GmbH | Geschirrspülmaschine mit einem siebsystem |
US20130032171A1 (en) * | 2010-05-04 | 2013-02-07 | BSH Bosch und Siemens Hausgeräte GmbH | Dishwasher with a screen system |
US9532698B2 (en) * | 2010-05-04 | 2017-01-03 | BSH Hausgeräte GmbH | Dishwasher with a screen system |
WO2012095315A3 (de) * | 2011-01-13 | 2012-12-20 | Winterhalter Gastronom Gmbh | Geschirrspülmaschine mit reinigungsvorrichtung sowie reinigungsvorrichtung |
US9192280B2 (en) | 2012-12-07 | 2015-11-24 | Electrolux Home Products, Inc. | Method and system for detecting and removing a clogging condition of a filter in a dishwasher |
WO2015135801A1 (de) * | 2014-03-10 | 2015-09-17 | BSH Hausgeräte GmbH | Trockner mit spülvorrichtung und flusendepot sowie verfahren zu dessen betrieb |
US11141039B2 (en) | 2017-02-24 | 2021-10-12 | Electrolux Appliances Aktiebolag | Dishwasher, method and control system for handling clogging condition |
Also Published As
Publication number | Publication date |
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EP1464268A3 (de) | 2008-10-15 |
EP1464268B1 (de) | 2013-08-07 |
DE10314892A1 (de) | 2004-10-14 |
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