EP2283761A2 - Dishwasher and process for operating a dishwasher using a preparation comprising several cleaning agents - Google Patents

Abstract

The dishwasher has a wash program e.g. intensive program, which is selected for the use of a detergent composition comprising several active substances. A switching unit switches on an additional function, where a parameter e.g. pH value, of the selected washing program is changed with respect to the use of the detergent composition by switching on the additional function, so that to be rinsed goods are heated at a rinsing program section to a temperature of about 58 degrees for an adjacent drying program section. An independent claim is also included for a method for operating a dishwasher.

Description

The invention relates to a dishwasher according to the preamble of claim 1 and two methods of operating a dishwasher according to the preamble of claim 10 and according to the preamble of claim 13.

For a long time now, so-called 3-in-1 combination preparations for use in dishwashers have been available, which together contain a cleaning substance, a softening substance and a rinse aid substance and are fed to the washing machine at the same time at a certain point in time. These 3in1 combination preparations are available in compressed tablet form so-called 3in1 tabs as well as 3in1 powder. The 3-in-one combination preparations can be placed in intended metering devices of the dishwasher, in which case they are added to the washing container at a specific point in time, which is determined by the washing program sequence of the dishwasher. On the other hand, they can also by the user of the dishwasher in the dishwasher, z. B. in the cutlery basket, be placed before switching on the wash program. Today, more than one selectable wash program is generally available to the user of a dishwasher for cleaning the soiled items set in the dishwashing machine. Programs which can be selected as wash programs are well-known under the name short program, normal program, intensive program, eco program, for which also very different synonymous conceptual formations exist. Since the use of 3-in-1 combination preparations by the user of the dishwasher, customer complaints have accumulated among manufacturers of dishwashers. Because the cleaning and / or drying results of in the Dishwasher cleaned items worsened in part dramatically when using 31n1 preparations over conventional single dosing of the corresponding substances. It has proven to be particularly problematic that, on the one hand, users do not pay attention to the prescribed localization of the 3-in-1 combination preparation in the dishwasher, so that some place the 3-in-1 tabs in the gas dishwashing machine, whereas the manufacturer requires use only by means of a metering device. Furthermore, the information provided by the manufacturers of the 3-in-1 combination preparations with regard to the selection of a suitable washing program is not appropriate, since the user of the dishwasher knows in general, which washing program he must select depending on the degree of contamination and drying of the dirt particles, but no more intimate knowledge of the course of the washing program has. This knowledge implies the manufacturer of the 3in1 combination preparation at the user and also completely disregards the fact that various 3in1 combination preparations are available on the market, which dissolve differently depending on various parameters and accordingly achieve their highest effectiveness at different times. Thus, some 3in1 combination preparations available on the market operate according to a so-called "dilution principle" (also known as the carry-over principle), ie at the beginning of the cleaning, the 3-in-1 combination preparation is added and begins to dissolve. It is mainly the rinse aid initially in a high concentration, that is added overdosed and it is assumed that due to carryover in Spülwasserresten and adhesions of the rinse aid washed dishes, Spülbehälterwänden and the ceiling of the washing and in the supply lines, the concentration in the rinse cycle still sufficient to achieve a particularly good drying result. Another embodiment of the 3-in-1 combination preparation provides that initially only the detergent and the softener dissolve and the rinse aid, which is encapsulated in the 3-in-1 combination preparation, z. B. in the form of a wax-coated bead, first dissolves temperature and / or pH-dependent during rinsing. When using a wash program, which already works in the program section cleaning at high temperatures and / or where the duration of the cleaning process is chosen very long, which is common in an intensive program, the rinse aid of the second type is already dissolved. The rinse aid of the former type has the particular disadvantage that in the execution of several rinse program sections before rinsing, such. As cleaning, intermediate rinsing, the latter is known to be switched between the program sections cleaning and rinsing, dissolves too quickly and is no longer present in sufficient concentration by multiple rinsing liquid change in the program section rinse. Another deficiency in the use of 3-in-1 combination preparations may occur when the user of the dishwasher is instructed to add by metering, e.g. B. a 3in1 tabs, before the start of the wash program at any point of the dishwasher, but not in the Dosierkombination makes. This begins z. As in the program section pre-rinsing at least the cleaner and softener to solve, which was generally found in laboratory experiments that the dissolution behavior of the 3-in-1 combination preparations is also very good for water, which has substantially supply temperature. By pumping the following program sections cleaning, possibly provided program sections intermediate rinsing, rinsing, the substances of the 3in1 combination preparation in a lower concentration available, which has a direct effect on both the cleaning and the drying result of the items and this generally worsened ,

The object of the invention is to propose a dishwasher and a method for operating a dishwasher which overcome at least one of the aforementioned disadvantages and provide a washing program which is based on the use of multi-active combination preparations is adapted or adapted, the user should continue to allow the basic use of the previously known washing programs.

The above object is achieved by a dishwasher according to the features of claim 1 and by a method according to the features of claim 10.

According to the device of the proposed invention is on a dishwasher at least one washing program, such. B. Intensive program, normal program, short program, eco program, selectable by the user of the dishwasher. The selection means are usually in a control panel of the dishwasher and are well known as such.

According to the invention, a means for connecting an additional function is provided, by means of which at least one parameter of the selected rinsing program can be changed with regard to the use of a combination preparation with a plurality of active substances when this function is switched on. As a result, the user-selected washing program, such as intensive program, normal program, short program, eco program, is adapted to the use of a combination preparation, which in particular comprises cleaning substance, softening substance and final rinse substance. That is, when the additional function is activated, a corresponding signal is given to the control unit, which automatically carries out the adaptation of the respective user-selected washing program to the use of combination preparations. For this purpose, for example, various control routine routines are stored in the microcontroller of the control unit, which is used, and / or on various parameters of the wash programs, such as temperature, duration of a certain Spülprogrammabschnittes, Spülflüssigkeitsfüllvolumen, pH value, among other things, defined or intervened and this changed , An alternative solution is an additional function, in which switching off a switching means acts according to the invention. In a further embodiment of the invention, a specially designed washing program for special use with a combination preparation among other washing programs as such is self-selectable.

Preferably, the additional function is designed for the use of a 3-in-one combination preparation, this combination preparation containing as effective substances for cleaning the ware substantially only cleanser substance, softening substance and rinse aid substance. Regardless of these components, the 3in1 combination preparation may have other substances whose direct or indirect influence on the cleaning and drying results of individual rinse program sections or the overall cleaning result of the rinse program are of subordinate importance. If further active substances of the combination preparation are not expressly mentioned, however, these are, if known and influenceable, included in the subject matter of the invention.

It is further comprises a switching means for switching on the additional function, which is preferably located in the screen carrier of the dishwasher next to other selection means and / or display means. Another possibility to arrange the switching means, the metering device of the combination preparation, in which the combination preparation is preferably filled. In the embodiment of the switching means diverse known designs, such as rotary selector switch, button or the like are conceivable. Furthermore, an actuation of a switching means by a user-dependent selection is possible, which can be switched by selecting in a menu-driven selection device, for example in a display display or networked home appliances via a graphical interface or possibly a voice recognition system.

In the dishwasher, by at least one sensor provided, the use of a combination preparation in particular a 3in1-combination preparation detectable, so that for the program sequence design is distinguishable on the one hand, whether a combination preparation works on the dilution principle, or a combination preparation, which dissolves the rinse aid only in the rinse phase pH and / or temperature-dependent is used. On the other hand, with repeated sensor measurement during the entire Spülprogrammablaufes z. B. concentration and / or pH change and / or changes in the degree of hardness of the rinsing liquid are determined, the conclusions on the concentration of the individual active substances of the 3in1-kombinatinproparates allow, with the result that the program flow can be modified at any appropriate time ,

As sensors at least one of the sensors is designed as a chemical and / or acoustic and / or thermal and / or optical and / or pneumatic sensor type. These can be designed differently in number and their specific detection property. Furthermore, an evaluation of the sensor signals can be utilized both with regard to the adaptation of the rinsing program sequence with respect to the use of the 3-in-one combination preparation and with the design of the other parameters of the entire rinsing program sequence. Furthermore, alternatively, at least one provided chemical sensor with appropriately selected receptors, the detection of z. B. several simultaneously occurring agents, such as cleaners and softeners and / or rinse aid, recognize the use of a combination preparation and signal without the addition of the additional function to the program flow control, the use of a combination preparation. By repeated control measurements and / or in comparison with other sensor measurements during the program sequence, the use of a combination preparation is concluded and the program sequence is changed accordingly. At present, the use of a sensor which recognizes at least the pH value and / or the temperature and / or the degree of hardness of the rinsing liquid is particularly preferred.

The intended sensors determine continuously or discontinuously during the program sequence or individual wash program sections whose time courses or times can be predetermined by the program control, of individual program parameters, eg. B. based on an actual target value comparison and / or a difference value and / or the change history of a parameter such as pH, temperature, turbidity, foaming, concentration, water hardness, whether a particular active substance of the combination preparation z. B. exceeds a predetermined minimum or maximum value. Further z. B. as a function of a difference value, the z. B. depending on the manufacturer of the 3in1 combination preparation itself, as well as in terms of other typical parameters such as concentration jumps, dissolution temperatures or parameter combinations such as pH and concentration or concentration and temperature of the Spülprogrammablaufes result. For a determinable period of a wash program sequence or over the entire duration of the wash program, the change of at least one parameter of the wash program is also detected and evaluated. So z. As regards the course of the pH of the rinsing liquid conclusions about the concentration of the individual active substances of the 3in1 combination preparation possible. Thus, the evaluation of the pH value is currently feasible in such a way that the program section cleaning represents a maximum basic ph value, either in the program section rinsing by a predetermined value must be fallen below, or its change history, eg. B. in a predetermined characteristic field, predefined within predeterminable tolerances or pH jumps (erratic change in pH) can be determined within predefined periods or on the other hand, time constants are determined for their occurrence, eg after reaching the dissolution temperature of an encapsulated rinse aid. According to the invention, such sensor measurement with activated additional function for adapting a Spülprogrammablaufes to the use of a combination preparation for the active intervention in the program flow itself be used when selecting a special designed Spülprogrammablaufes these have a kind of first control function to determine whether during the program actually a combination preparation is used or at least an effective substance at the given time in sufficient concentration is available, adjustments of Spülprogrammablaufes can be optional.

A suitable method of evaluation of the sensor measurement signals is z. B. the value or the change of certain parameters of the wash program such as turbidity, pH, foaming, concentration, water hardness, etc. individually and in appropriate combinations at characteristic times of Spülprogrammablaufes, to determine their qualitative and quantitative occurrence as well as their delay times with each other , For this purpose, at least individual parameter values can be determined within determinable time intervals or time intervals and subjected to an actual nominal value comparison, a difference value formation or a threshold value query or the changes can be made compared to preset values or values determined in the program sequence, all comparison values being shown in tables or as default values in at least one memory unit of the program control are stored. In networked household appliances, this storage unit can also be located outside the dishwasher. Furthermore, certain program states can also be stored in the memory unit whose combination pairings, for example, are undesirable, can be stored and these can prompt the user to perform certain actions. Such unwanted constellations arise, for example, in the program section prewash when increased foaming and / or significant pH fluctuations occur, or a predetermined rinse aid concentration is exceeded during all program sections or rinse agent concentration jumps occur regardless of a particular temperature or temperature profile. The user can, for example, according to the occurred error situation. B. be asked to make the insertion of a combination preparation in the Dosierkombination or the program sequence is aborted until user-dependent re-commissioning of the dishwasher takes place or the measurement result recognized as defective is at least displayed.

In the program section Pre-rinsing or cleaning can be provided that the time of actual addition of the 3in1 combination preparation is additionally monitored, for. B. is detected by an acoustic sensor, the case of a tablet from the metering chamber in the washing. Other detection options provide optical sensors, the z. B. register increased foaming or chemical sensors that evaluate the change in the pH of the rinsing fluid.

With further advantage is in an optionally modified combination preparation in which z. B. an enzymatic cleaner substance having an efficacy temperature limit of about 30 ° C and a rinse aid substance with a dissolution temperature at about 58 ° C is included, with shortened scheduled program sections, and thus shortened solution duration, by short-term, possibly repeated and / or or controlled or regulated power output of the heating means in the pre-washing and / or intermediate rinsing the rinsing liquid preferably heated at the end of the respective process section, so that for the following process sections cleaning or rinsing, which are operated with hot rinsing liquid, the respective chemical substance their full effectiveness better and can last longer. By preheating or intensified heating of the rinsing liquid at the end of the preceding rinsing program section, the dissolution and thus the effectiveness of the cleaner or rinse aid for the duration of each program section is improved. The energy supplied is comparable to that of an activation energy. In the case of an intended temperature control or temperature control, the dissolution time, concentration, exposure time, time of release of a chemical substance of the 3-in-one combination preparation can be optimized.

Of particular advantage is, if user-dependent, the actually used 3in1 combination preparation of the program control is specified as a parameter, eg. B. by input via an image capture, the z. B. recognizes the barcode of a 3in1 combination preparation or stored in the program store commercially available 3in1 combination preparations can be selected or the use of a particular combination preparation can be entered by the user in any other way, the user-specified information about the use of a particular combination 3in1 either information is stored up to a changing input or is queried again at the beginning of each or a defined predetermined time.

With further advantage, in the case of querying or evaluating information about the type and dosage form of the supplied cleaning, rinsing and possibly softening substances, a product which is clearly not identified as a 3-in-1 combination preparation can deactivate a 3-in-1 function which has been incorrectly selected by the user or if selected of a 3in1 program will issue an error message.

It is also advantageous that when the 3in1 function is switched on or when a 3in1 rinsing program is selected, the display for states of the rinsing program which are switched on in conventional rinsing programs with single dosing of the substances are switched off or faded out, for example. As the shutdown of a display LED at the time of recovery or a display LED, which asks for replenishment of rinse aid.

Is selected by the user of the dishwasher after setting soiled items in the dishwasher a washing program, added a combination of the dishwasher and indicated by an optionally switched selection means the use of a combination preparation, Thus, the program sequence control, taking into account the additional function, provides that the program sequence of the selected wash program changes and is adapted in its entire design to the use of a combination preparation. Depending on the selected wash program, individual or several parameters of the various wash program sections pre-wash, clean, intermediate wash, rinse, are automatically adjusted in the manner described below, depending on the evaluation of predetermined sensor measurements, or changed in a predefined manner.
The steps indicated in the method claims do not necessarily represent a requirement for the rinsing program sequence with regard to their sequence, but can be selectively selected, for example depending on the use of a particular combination preparation or type of combination preparation, repeatedly and / or sequentially switched or from other program steps known per se be followed.

When using a dosing combination with usually separate storage chambers for the detergent and rinse aid substance, the function of the rinse aid and possibly the detergent dosing in the selected rinse program is hidden when using a 3-in-one combination preparation. In an alternative embodiment, it is possible for the z. B. sensor-dependent determination of the concentration of the rinse aid to meter these in required amounts, this compensates if necessary, dilution losses of the previous rinse program sections. If, during the selected wash program, further opening times for the metering device are provided for releasing a wide variety of substances, these too are blocked or the time of metering in a particular substance is shifted and / or changed in the metering dosage.

In addition to the cleaning substance and the rinse aid substance, a softening substance which softening in a known manner in the dishwashing machine is added to the combination preparation is to make unnecessary by a designated softening, then the known manner to be performed in a dishwasher regeneration of the softener with saturated salt solutions (brine) is not necessary, therefore in the program flow the Regenerierfunktion, ie the addition of a defined brine volume to softening, otherwise to a defined Timing of the program is scheduled, hidden. Alternatively, in the case of an intended hardness sensor which can determine the water hardness of the rinsing liquid, the water hardness actually present in the dishwasher can be monitored, if necessary, as a result of softening with the softening substance of the combination preparation and, if necessary, the regeneration function of the softener can be switched on, so that partial softening of the water is possible the softener device is made. Experience has shown that in hard water areas the softening capacity of the softening substances of a 3-in-1 combination preparation is insufficient. Therefore, it is particularly advantageous if the information about the degree of hardness of the actually used water of the supply line flows into the design of the program sequence. The degree of hardness of the water, for example, by the user via a specially provided input function, eg. B. in the control panel, are entered and stored or also be set to a blending device, with appropriate means forward the value of the water hardness setting to the program flow control and switched on 3in1 function or selection of a 3in1-Spülprogrammes the connection of the Regenerierfunktion and / or at least allow the intermingling of hard and soft water at least at a given time.

It is envisaged to continue the previous water supply through the softening device regardless of their softening capacity, which is depleted with increasing number of rinsing fluid change depending on the degree of hardness of the water supplied. All other alternatives of water supply are theoretically possible, but only appropriate if by default only combination preparations with a softening substance are available. The water volume for the regeneration function, optionally defined in the storage container of the dishwasher, can be used, in particular in soft water areas, alternatively as a defined volume wholly or partly in the liquid-carrying program sections for dimensioning a predetermined liquid volume.

If the use of a combination preparation is recognized by a sensor during an initial pre-rinsing or the use thereof is indicated by the auxiliary function switched on, the duration of the initially provided program section pre-rinsing can be shortened in order to prevent the encompassed rinsing agent and rinse aid from dissolving too early and in the sections cleaning or rinsing in too low a concentration. If, on the other hand, a rinsing program is selected which provides for two or more pre-rinsing sections, each with complete water change, then by omitting at least one pre-rinsing or reducing to a pre-rinse section of the program, this will already be prevented, without the detection of a combination preparation, from being prophylactically introduced into the dishwashing machine instead of dissolved in the dosing combination combined preparations dissolves too early.

If, as described above, the pre-rinsing process section is shortened or completely omitted, this reduces the time of loading the ware with water, the process of dissolving heavy soiling, which may have long adhered to the ware, is thereby shortened or completely eliminated. This is not conducive to good cleaning results in some cases of contamination. Therefore, in such cases, the process section cleaning is preferably extended by the duration of the process section by which the pre-rinse process section has been shortened. This is how the dirt particles are dissolved at least partially moved into the cleaning procedure section.

Particularly preferably, the number of intermediate rinsing sections between the cleaning and rinsing program sections is reduced to an intermediate rinsing section, which essentially has the task of eliminating occasionally trapped dirt particles and chemical residues of the cleaning. With further advantage, the intermediate rinsing can be operated with a reduced maximum rinsing liquid volume compared to the maximum intended rinsing liquid volume of the program section cleaning, so that the concentration of the dissolved rinse aid is higher than with the same size rinsing liquid volume as in cleaning. If during the program section cleaning the rinsing liquid is diluted several times and / or a low degree of contamination of the rinsing liquid has been detected by a corresponding turbidity measurement, the intermediate rinsing section may possibly be completely dispensed with.

In the intermediate flushing process section, which is operated with lukewarm rinsing liquid and therefore does not provide active heating by switching on provided heating elements, the energy fed in during the process sections which are operated with hot rinsing liquid is removed. In order to make the procedure energetically favorable and as described above also water-saving and thus increasing the concentration of the rinse aid in the process section intermediate rinsing, can be provided by repeated switching on and off the circulation pump with different determinable and / or predefinable duration of the on and off state the circulation pump to bring the rinsing liquid in the manner of a pulse rinse on the dishes. When switching off the circulation pump, the circulation of the rinsing liquid and thus the loading of the items to be washed is interrupted with rinsing liquid. This type of pulse purging is briefly described with a sequence of spraying, pausing, splattering, pausing, splashing, pausing, etc.

At the end of at least one procedure section such. B. the intermediate rinse may be provided in dependence of the measurement of turbidity and / or the content of rinse aid in the rinsing liquid, a dilution step. The dilution step causes a partial volume of the rinsing liquid, which was used during the intermediate rinsing, to continue to be used in the subsequent rinsing process section and to be mixed with fresh rinsing liquid to be supplied. As a result of the dilution step, the loss in particular of rinse aid against a complete pumping and filling of rinsing liquid is reduced. Precisely for this reason, irrespective of the measurement of the turbidity of the rinsing liquid inevitably a dilution step instead of a complete pumping out of the rinsing liquid z. B. be provided at the end of a rinse program section.

As a further or alternative step, the temperature in the process sections preceding the program section rinsing, preferably in the process section cleaning, is preferably reduced to a temperature below the dissolution temperature of the rinse aid, preferably below 58 ° C. This is at z. B. a selected intensive program, which usually operates the cleaning section with temperatures between 58 and 70 ° C, prevents that when using a combination preparation with temperature-dependent release of the rinse aid substance this possibly already dissolves here and therefore present in the program section rinse in too low a concentration.

In the program section rinsing the items to be washed is heated to a temperature of at least 58 ° C for the subsequent program section drying, thereby also the temperature-dependent and possibly pH-dependent dissolution of the rinse aid is possible.

Advantageously, the temperature control of the rinsing liquid during a selected rinsing process, which has been adapted to the use of combination preparations automatically, as mentioned above, determined on the one hand by the dissolution temperatures of the individual chemical substances. On the other hand, under energetic aspects during the pre-rinsing, provided that it is carried out, the rinsing liquid is not heated by switching on intended heating means, so that the rinsing liquid is substantially dependent on the water inlet temperature. During rinsing and rinsing, the rinsing liquid is actively heated as a result of switching on the heating means provided and passive in the intermediate rinsing program section without connecting these heating means, ie. H. by removing energy from the heat capacity of the dishwasher, heated significantly to a temperature below the dissolution temperature of a temperature-dependent rinse aid.

Without limiting the invention, it is possible to run parts of the wash program with selected 3in1 function completely or partially according to a defined predetermined program or detection and evaluation of certain parameters, eg. B. by sensors, in a suitable manner to the actual situation with respect to a predetermined desired situation completely or partially adapt.

The connection of the 3in1 function or the selection of a 3in1 wash program can also be switched on, if necessary, even in networked household appliances, which are operated independently of location by a central computer not located in the dishwasher.

In addition to the already known selectable washing programs normal program, intensive program, ecology program, short program, may also be provided a special 3in1 washing program, the same of the use of combination preparations, in particular those containing cleaners, softeners and rinse aid of is adjusted in advance. This 3-in-1 wash program is selected directly by the user of the dishwasher and is characterized by the following essential process steps, the process sequence mentioned but not necessarily being a possible wash program sequence without the final program section drying:

Changing or switching off the softener function of the regenerating device and / or changing or switching off the opening of special storage chambers of the metering device for in addition to the combined preparation still individually stored chemical substances (detergent, rinse aid) and / or changing the Zudosierungsmenge the stored chemical substances.

Turn off corresponding display elements to functions that are switched off during the program, at least by the program control from the outset, that is preset, preferably switching off the display regeneration with switched off regeneration by the regenerator and / or turning off the display refill rinse at least disabled automatic dosing of the rinse aid.

The pre-rinse is done with cold water, which is thus essentially dependent on the water supply temperature, for an extremely short period of 2 to 5 min., Preferably 2 to 3 min. During this time, mainly fresh soiling can be detached and softened dirt can be softened. Depending on an optional turbidity measurement of the liquid, one or more dilution steps of the rinsing liquid can be provided in the case of heavy soiling, wherein a dilution step is provided due to the shortness of the pre-rinsing, preferably at the end of the pre-rinsing. Finds at the end of the pre-rinse no dilution step takes place, the rinse liquid is completely changed before the following program section.

The freshly supplied rinsing liquid, which may also be diluted and thus contaminated to a certain extent, is now heated in the cleaning process section to a temperature which is below the dissolution temperature of the rinse aid, preferably between 40 and 57 ° C.

The combination preparation is preferably supplied to the rinsing container by the dosing device within the first third of the program section cleaning, provided that the combination preparation is not by the user before starting the rinsing program in the washing, z. B. in the cutlery basket was inserted.

In the o. G. Temperature, the rinsing liquid is circulated in the washing during cleaning about 10 to 30 minutes and completely pumped or diluted at the end of the cleaning process section. This decision can be made dependent on an optional turbidity measurement of the rinsing liquid.

If at least one turbidity measurement of the rinsing liquid is carried out, it is optionally possible to carry out a plurality of dilution steps as a function of the degree of soiling and / or the concentration of individual constituents of the combined preparation. The process section cleaning is followed by a process section intermediate rinsing in which the now existing fresh or diluted rinsing liquid is heated passively, ie exclusively by energy removal of the heat capacities of the dishwasher so that it removes residual dirt and chemical residues of the process section cleaning during its circulation. The circulation of the rinsing liquid takes place in the intermediate rinsing section for a period of about 2 to 10 minutes. Alternatively, the intermediate rinse also be operated as pulse rinses with a reduced maximum rinsing fluid volume with respect to the maximum rinsing fluid volume of the cleaning.

The intermediate flushing stage ends with a complete or partial drainage.

In the rinsing process section, a defined rinsing liquid volume is supplied to the rinsing container. This can be fixed from the outset and / or set variably in dependence of various parameters. A dependent variable is the concentration of the rinse aid actually present in the rinse liquid, since this has an immediate effect on the rinse aid result and thus on the subsequently achievable drying result of the ware. Thus, in the case of a low concentration of the rinse aid at the beginning of the program section rinsing the rinsing liquid as low as possible, but possibly depending on the degree of turbidity of the rinsing liquid, are supplied. If, otherwise, the concentration of the rinse aid at the beginning of the program section rinsing is above average or sufficiently high, the concentration of the rinse aid can be adjusted to a predetermined concentration by supplying a defined rinse liquid volume. The rinsing liquid with rinse aid already dissolved, as well as the rinse aid still to be dissolved, is now preferably heated to a dissolution temperature above the dissolution temperature of a pH-dependent and / or temperature-dependent dissolving rinse aid. This dissolution temperature is currently above 58 ° C (for the 3in1 combination preparation Calgonit Powerballs). For a period of 2 to 15 minutes, but also at least until reaching a predetermined temperature of currently preferably 65 to 70 ° C, the rinsing liquid is heated and circulated. At the end of the rinsing program section, the rinsing liquid is removed as far as possible by pumping out of the rinsing container.

On the items to be washed, the Spülbehälterdecke, the Spülbehälterwänden remaining residual liquid and water vapor is removed in, following the program section rinse, program section drying. The drying is preferably carried out as condensation drying. During the condensation drying, if present, preferably at least one circulating air blower is switched on in the first third of this program section.

The intermediate rinsing during the liquid-carrying process sections can preferably be designed as pulse rinses, ie, during the process section intermediate rinsing, the circulation pump is repeatedly switched on and off for a predefinable or determinable duration. The duration of switching on the circulation pump and the switching off of the circulation pump is dependent on a level of Spülflüssigkeitsniveau in the washing, which. corresponds to a lower level, at which the circulation pump sucks no air. Due to the above-mentioned limited factor, there are further dependencies on the rotational speed of the circulation pump, which withdraws more rinsing liquid from the sump as the rotational speed increases. The design of the pulses of switching on and off the circulation pump is adjustable depending on a turbidity measurement of the rinsing liquid, so the duration of turning on the circulation pump against the duration of turning off the circulation pump can be shortened and increased with increased degree of contamination with low degree of contamination. Depending on a pH value measurement and / or the temperature of the liquid and / or a determined rinse aid concentration, the maximum rinsing liquid volume present can be set in a defined manner during a liquid-carrying process section, preferably in the intermediate rinse process section. Thus, the dissolution behavior and / or the concentration of the rinse aid and / or one of the other substances of the combination preparation can be influenced. If a combination preparation is used, which is a rinse aid contains, which has a temperature and / or pH-dependent dissolution behavior, a certain pH, preferably in the neutral pH range, to achieve during the intermediate purging. This presupposes, if necessary, both an increased volume of rinsing liquid during the intermediate rinsing, as well as that this pH value can be achieved by one or more intended dilution steps during the intermediate rinsing.

In one embodiment, the invention with reference to a method for operating a domestic dishwasher, which is suitable for the use of 3in1-Kombinationspzäparaten, ie of those with the active ingredients cleaner, rinse aid and softener, explained in more detail.

The single figure shows a diagram of the individual process sections of a wash program sequence. It is assumed that the water of the feed line is essentially soft and thus has a low degree of hardness.

On the ordinate of the curve A is not the scale to the time and on the abscissa is not to scale the Spülflüssigkeitsvolumen present in the washing container applied. Individual important parameters for the procedure, which are indispensable for a particularly good cleaning result of the items to be washed, are indicated by corresponding arrows. Preferably, at the beginning of the rinse program, automatic dosing functions that do not include a 3in1 combination preparation supplement are masked out, in each case involving the automatic dosing of the rinse aid, and the automatic regeneration function is also hidden. From the figure it can be seen that the wash program is performed with a pre-wash of very short duration of 2 to 5 minutes at supply temperature of the water. In this section of the program, preferably no chemical substances are added to the dishwasher to improve the prewetting result. However, it can not be prevented that by the user falsely the 3in1 combination preparation was fed before the start of the dishwasher. After complete pumping out of the rinsing liquid at the end of the program section pre-rinsing, characterized by arrow W, fresh rinsing liquid is supplied to the rinsing container. This is limited to a maximum volume of rinsing liquid of about 4 liters, measured on a dishwashing machine intended to hold 12 standard dishes. At the beginning of the program section cleaning, the rinsing liquid is heated by connecting provided heating means. In this case, the rinsing liquid should reach a temperature of about 55 ° C, which at the time of the invention, a temperature below the dissolution temperature of the rinse aid of pH and temperature-dependent dissolvable 3in1 combination preparation, such as Calgonit Powerball® corresponds. In the first third of the program section cleaning, the 3-in-1 combination preparation is added, preferably during the feeding of rinsing liquid (indicated by arrow 3 in1).

The rinsing liquid is circulated at the maximum predetermined temperature for about 10 to 30 minutes in the washing and thereby applied to the dishes to be cleaned. At the end of the program section cleaning, the rinsing liquid is almost completely removed from the rinsing container (indicated by arrow VR). The rinsing liquid volume is replenished fresh for a subsequent program section intermediate rinsing and heated and circulated exclusively by removal of energy stored in the heat capacity of the gas washer. The maximum volume of rinsing liquid supplied can be varied as a function of a turbidity measurement and / or a concentration measurement of existing rinse aid which operates on the dilution principle. Thus, as shown in dotted lines, the rinsing liquid volume is preferably increased in the case of a high degree of contamination and / or a high degree of concentration of the rinse aid and / or strongly basic medium of the rinsing liquid. With low degree of pollution, already quite low concentration of the rinse aid with regard to the concentration, which in the rinsing of Is necessary, and / or already neutral rinsing liquid, the rinsing liquid volume, as shown in dashed, lowered.

The intermediate rinsing step proceeds after a dilution step or after a complete draining, not shown, e.g. Dependence of degree of turbidity in the program section Rinse over. For this purpose, the rinsing liquid volume is at least partially increased and preferably reaches the maximum rinsing liquid volume of the program section cleaning. On the other hand, alternatively, the rinsing liquid volume can also be adjusted precisely to a predeterminable concentration range of the rinse aid by appropriately evaluated measurement results of provided sensors. The value of the rinsing fluid volume to be supplied then has to be calculated by the arithmetic unit of the program sequence control. Thus, the duration of the intermediate rinsing varies between 2 to 10 minutes and the duration of rinsing approximately between 2 to 15 minutes. The rinsing liquid volume is now increased in the further program sequence to a temperature above a pH or temperature-dependent dissolution temperature of the rinse aid, the dissolution temperature of the rinse aid is currently about 58 ° C, so that heated to a minimum temperature in the rinse of 60 to 70 ° C. becomes. At the end of the rinse program section, the rinse liquid is almost completely removed from the rinse tank (indicated by arrow VK). The program section rinsing is followed by a program section drying, which, however, is not shown here.

Without limiting the invention, all figures which include numerical values are adapted to the 3in1 combination preparations currently available on the market (Calgonit Powerball®, Somat 3in1®, Sun 3in1 Optimal®). If there are changes in the composition of these 3-in-1 combination preparations, the parameters mentioned must be adjusted accordingly with numerical values. To further modify the proposed program flows to the co-pending applications P-10073, entitled "Process for operating a dishwasher" and P-10026, entitled "Process for operating a dishwasher, dishwasher" dated 16.05.2002 the applicant referenced.

Without limiting the invention, a program sequence design or a method is conceivable in which the invention described above is reversed, d. H. all preset programs are designed for the use of (3in1) combination preparations and an operable switching means allows adaptation to the use of individually stored or metered cleaning, rinsing and softening agents of the selected washing program.

According to further preferred embodiments, at least one sensor may be provided in the dishwasher according to the invention, the measured values of which can be selectively detected and evaluated, so that the program control unit of the dishwasher can influence the course of the selected washing program in a defined manner and / or, if necessary, the program control unit specifically carries out further sensor measurements and / or causes input-dependent queries before at least one defined intervention takes place in the rinsing program sequence. In this case, at least one chemical and / or at least one acoustic and / or at least one optical sensor and / or at least one thermal and / or at least one pneumatic sensor can be arranged in the dishwasher. In particular, it is possible to detect continuously or discontinuously on the basis of at least one actual / desired value comparison and / or difference value and / or the change of at least one wash program parameter pH value and / or temperature and / or haze and / or foam formation and / or concentration and / or quantitative measure the release of at least one specific substance of the combination preparation is carried out. Furthermore, time points and / or time intervals for specific sensor measurements and / or setpoint values and / or threshold values and / or other comparison values for the evaluation of these sensor measurements can be stored in at least one memory unit of the program control. In addition, it can be detected by at least one sensor provided, preferably during the first liquid-conducting Spülprogrammabschnittes, whether a combination preparation in the metering device or elsewhere in the dishwasher, preferably in a cutlery basket, is introduced and / or that at least once in the course of the washing program at least one measurement of a sensor can be seen whether a present in the combination preparation rinse aid has already been added at an earlier or defined time during the program flow of the rinse or preferably only in the program section rinse, released and / or whether a defined rinse aid concentration is exceeded or fallen below , Finally, a recognition device, in particular an image recognition device, can be provided by which information about the use of a specific combination preparation can be determined.

1. a) die Zudosierung von bestimmten Substanzen, welche in der Dosiervorrichtung bevorratet sind, wird im Zeitpunkt verschoben und/oder in der Menge der Zudosierung verändert oder vollständig ausgeblendet, und/oder
2. b) die automatische Regenerierfunktion der Regeneriereinrichtung wird abgeschaltet, sofern nicht durch einen vorgesehenen Härtesensor das Über- oder Unterschreiten eines definierten Härtegrades und/oder durch eine benutzerabhängige Einstellung an der Regenerierdosierung ein definierter Härtegrad der Spülflüssigkeit festgelegt wird und/oder über eine programmgesteuerte Eingabeeinrichtung das Einblenden der Regenerierfunktion bei eingeschalteter Zusatzfunktion erfolgt, wobei bei Überschreiten eines definierten Härtegrades der Spülflüssigkeit durch zumindest zeitweises Wiederzuschalten der Regenerierfunktion und/ oder Verschneiden der Spülflüssigkeit mit weichem Wasser der Härtegrad der Spülflüssigkeit insgesamt herabgesetzt wird, und/oder
3. c) bei Beginn des Spülprogrammes wird eine Zudosierung der Klarspülersubstanz aus der Dosierkombination gesperrt; hierzu wird ein entsprechender Defaultwert in einer Speichereinheit der Programmsteuerung gesetzt und gespeichert, wobei im Falle des Erkennens des Unterschreitens der Klarspülerkonzentration unter einen definierbaren Konzentrationswert dieser Defaultwert rücksetzbar ist und/oder zu einem definierbaren Zeitpunkt des Programmablaufes Klarspülersubstanz in definierbarem Volumen der Spülflüssigkeit und/oder bis zum Erreichen eines definierbaren Mindestkonzentrationswertes zugesetzt wird, wobei eine derartige Zugabe vorzugsweise erst im Programmabschnitt Klarspülen erfolgt, und/oder
4. d) während des Programmablaufes wird in Abhängigkeit der Verfahrensführung des tatsächlich ausgeführten Programmabschnittes b) hinsichtlich der Regenerierfunktion ein Zusetzen eines definierten Solevolumens in eine Enthärtungsvorrichtung aus- oder eingeblendet, und/oder
5. e) Informationen über den Ist- und/oder Soll-Zustand zumindest eines Parameters des Spülprogrammes oder ein daraus abgeleiteter Hinweis und/oder Aufforderung werden an den Benutzer durch korrespondierende Anzeigeelemente angezeigt, und/oder
6. f) die Dauer zumindest eines Programmabschnittes, vorzugsweise eines Vorspülens, wird verkürzt oder auf Null reduziert, und/oder
7. g) die Dauer zweier Verfahrensabschnitte, vorzugsweise der Programmabschnitte Vorspülen und Reinigen und/oder Reinigen und Zwischenspülen, wird verlängert und/oder verkürzt, wobei die Zeitdauer der Verlängerung und Kürzung in einem definierbaren Verhältnis stehen, und/oder
8. h) einer oder mehrere vorgesehene Zwischenspülabschnitte werden auf einen oder keinen Zwischenspülabschnitt reduziert, und/oder
9. i) zumindest in einem Programmabschnitt wird durch einmaliges oder wiederholtes Ein- und Ausschalten der Umwälzpumpe mit unterschiedlich bestimmbarer bzw. vorgebbarer Dauer des Ein- und Ausschaltzustandes der Umwälzpumpe oder durch geregelte oder gesteuerte Drehzahländerung der Umwälzpumpe die Spülflüssigkeit in der Art eines Impulsspülens auf das Spülgut aufgebracht, und/oder
10. j) während zumindest eines Programmabschnittes, vorzugsweise am Ende der Verfahrensabschnitte Vorspülen, Reinigen und/oder Zwischenspülen, wird zumindest ein Verdünnungsschritt mit Verringerung der Schmutzkonzentration der Spülflüssigkeit in Abhängigkeit von zumindest einer Messung der Trübung und/oder der Konzentration zumindest einer Wirksubstanz in der Spülflüssigkeit oder davon unabhängig ausgeführt, und/oder
11. k) die maximale Temperatur wird in dem dem Klarspülen vorangehenden Programmabschnitten, insbesondere im Verfahrensabschnitt Reinigen, auf eine Temperatur unterhalb der Auflösungstemperatur der Klarspülersubstanz reduziert, und/oder
12. l) im Programmabschnitt Klarspülen wird auf eine Temperatur aufgeheizt, die über der Temperatur der Auflösung der Klarspülersubstanz liegt.

According to further preferred embodiments of the method according to the invention for operating a dishwasher, the adaptation of the rinsing program to the use of a combination preparation may comprise at least one of the following measures:

1. a) the metered addition of certain substances which are stored in the metering device, is shifted at the time and / or changed in the amount of dosing or completely blanked, and / or
2. b) the automatic regeneration function of the regenerating device is switched off, unless a designated hardness sensor overshoots or falls below a defined degree of hardness and / or a user-dependent setting on the Regenerierdosierung a defined degree of hardness of the rinsing liquid is determined and / or via a program-controlled input device the fade the Regenerierfunktion takes place when the auxiliary function is switched on, whereby when exceeding a defined degree of rinsing of the rinsing liquid is reduced by at least temporarily reconnecting the Regenerierfunktion and / or blending the rinsing liquid with soft water, the degree of hardness of the rinsing liquid total, and / or
3. c) at the beginning of the washing program, a metered addition of the rinse aid substance from the metering combination is blocked; For this purpose, a corresponding default value in a memory unit of the program control is set and stored, wherein in the case of recognizing the falling below the rinse aid concentration below a definable concentration value of this default value is reset and / or at a definable time of the program flow rinse aid substance in definierbarem volume of the rinsing liquid and / or is added to achieve a definable minimum concentration value, wherein such an addition preferably takes place only in the program section rinsing, and / or
4. d) during the course of the program, a clogging of a defined brine volume in a softening device is displayed or faded in, depending on the process control of the program segment actually executed b) with respect to the regeneration function, and / or
5. e) information about the actual and / or desired state of at least one parameter of the wash program or a derived hint and / or request are displayed to the user by corresponding display elements, and / or
6. f) the duration of at least one program section, preferably a pre-rinse, is shortened or reduced to zero, and / or
7. g) the duration of two process sections, preferably the program sections pre-rinsing and cleaning and / or cleaning and intermediate rinsing, is extended and / or shortened, wherein the duration of extension and reduction are in a definable ratio, and / or
8. h) one or more provided intermediate rinse sections are reduced to one or no intermediate rinse section, and / or
9. i) at least in a program section, the rinsing liquid is applied to the items to be washed in the manner of a pulse rinse by a single or repeated switching on and off of the circulating pump with different determinable or predefinable duration of the on and off state of the circulating pump or by controlled or controlled speed change of the circulation pump , and or
10. j) during at least one program section, preferably at the end of the process sections pre-rinsing, cleaning and / or intermediate rinsing, at least one dilution step with reduction of the soil concentration of the rinsing liquid as a function of at least one measurement of turbidity and / or concentration of at least one active substance in the rinsing liquid or independently of this, and / or
11. k) the maximum temperature is reduced to a temperature below the dissolution temperature of the rinse aid substance in the program sections preceding the final rinse, in particular in the cleaning process section, and / or
12. l) in the program section rinsing is heated to a temperature which is above the temperature of the dissolution of the rinse aid substance.

1. a) Verändern oder Abschalten der Enthärterfunktion der Regeneriereinrichtung und/oder Verändern oder Abschalten der Öffnung spezieller Bevorratungskammern der Dosiervorrichtung, und/oder
2. b) Abschalten korrespondierender Anzeigeelemente zu Funktionen, die während des Programmablaufes zumindest durch die Programmablaufsteuerung von vornherein, dass heißt voreingestellt abgeschaltet werden, und/oder
3. c) Vorspülen mit kalter, wasserzuleitungstemperaturabhängiger Spülflüssigkeit mit einer vorspüldauer von vorzugsweise 2 bis 5 Minuten; vollständiger Spülflüssigkeitswechsel am Ende des Verfahrensabschnittes Vorspülen, wobei einer oder mehrere Verdünnungsschritte mit einem Flüssigkeitswechsel während des Vorspülens ausgeführt werden können, und/oder
4. d) Aufheizen der Spülflüssigkeit im Verfahrensabschnitt Reinigen auf eine Temperatur, die unterhalb der Auflösetemperatur des Klarspülers liegt, vorzugsweise zwischen 45 und 57 °C, und/oder
5. e) Zudosieren des Kombinationspräparates während der Aufheizphase der Spülflüssigkeit im Programmabschnitt Reinigen, vorzugsweise zu Beginn oder im ersten Drittel des Programmabschnittes Reinigen, und/oder
6. f) Umwälzen der Spülflüssigkeit im Spülbehälter im Programmabschnitt Reinigen bei einer Reinigungstemperatur (40 bis 57 °C) für die Dauer von 10 bis 30 Minuten, wobei am Ende des Verfahrensabschnittes Reinigen die Spülflüssigkeit, ggf. in Abhängigkeit des Ergebnisses einer Trübungsmessung der Spülflüssigkeit, vollständig abgepumpt wird oder der Verfahrensabschnitt Reinigen durch einen Verdünnungsschritt abgeschlossen wird, wobei mehrere Verdünnungsschritte optional während des Reinigens ausgeführt werden können, und/oder
7. g) passives Aufheizen der Spülflüssigkeit in einem Verfahrensabschnitt Zwischenspülen, die frisch zugeführt oder mit Spülflüssigkeit des Programmabschnittes Reinigen verschnitten wird und Umwälzen der Spülflüssigkeit im Spülbehälter für eine Dauer von 2 bis 10 Minuten, und/oder
8. h) Beenden des Verfahrensabschnittes Zwischenspülen mit einer vollständigen oder teilweisen Entleerung, wobei letztere einen Verdünnungsschritt zum folgenden Verfahrensabschnitt einleitet, und/oder
9. i) Auffüllen der Spülflüssigkeit auf ein definiertes und/oder variabel einstellbares Füllniveau der Spülflüssigkeit im Programmabschnitt Klarspülen, Aufheizen der Spülflüssigkeit durch Zuschalten vorgesehener Heizmittel über die Auflösetemperatur der Klarspülersubstanz des Kombinationspräparates, vorzugsweise auf 58 bis 70 °C, und Umwälzen der Spülflüssigkeit mit dem aufgelösten oder verdünnten und verschleppten Klarspüler, und/oder
10. j) Vollständiges Entleeren der Spülflüssigkeit aus dem Spülbehälter am Ende des Verfahrensabschnittes Klarspülen, erst wenn eine definierte Konzentration der Klarspülsubstanz für einen definierten Zeitabschnitt zumindest im Programmabschnitt Klarspülen nicht unterschritten worden ist.

In addition, in the method according to the invention, at least one of the following method steps may be provided in the course of the rinsing program adapted to the use of a combination preparation:

1. a) changing or switching off the softening function of the regenerating device and / or changing or switching off the opening of special storage chambers of the metering device, and / or
2. b) switching off corresponding display elements to functions that are switched off during the program sequence, at least by the program sequence control from the outset, that is preset, and / or
3. c) pre-rinsing with cold, water supply temperature-dependent rinsing liquid with a pre-rinsing time of preferably 2 to 5 minutes; complete rinsing fluid change at the end of the process section Pre-rinsing, wherein one or more dilution steps can be carried out with a liquid change during pre-rinsing, and / or
4. d) heating the rinsing liquid in the process section cleaning to a temperature which is below the dissolution temperature of the rinse aid, preferably between 45 and 57 ° C, and / or
5. e) adding the combination preparation during the heating phase of the washing liquid in the program section cleaning, preferably at the beginning or in the first third of the program section cleaning, and / or
6. f) circulation of the rinsing liquid in the rinsing container in the program section cleaning at a cleaning temperature (40 to 57 ° C) for a period of 10 to 30 minutes, at the end of the process section cleaning the rinsing liquid, possibly depending on the result of turbidity measurement of the rinsing liquid completely is pumped or the process step cleaning is completed by a dilution step, wherein a plurality of dilution steps can be optionally carried out during the cleaning, and / or
7. g) passive heating of the rinsing liquid in a process section intermediate rinsing, which is freshly fed or blended with rinsing liquid of the program section cleaning and circulating the rinsing liquid in the rinse tank for a period of 2 to 10 minutes, and / or
8. h) terminating the process section intermediate rinsing with a complete or partial emptying, the latter initiating a dilution step to the next stage of the process, and / or
9. i) filling the rinsing liquid to a defined and / or variably adjustable filling level of the rinsing liquid in the program section rinsing, heating the rinsing liquid by switching provided heating means on the dissolution temperature of the rinse aid substance of the combination preparation, preferably to 58 to 70 ° C, and circulating the rinsing liquid with the dissolved or diluted and delayed rinse aid, and / or
10. j) Complete emptying of the rinsing liquid from the rinsing container at the end of the process section rinsing only when a defined concentration of the rinsing substance for a defined period of time has not fallen below at least in the program section rinsing.

Finally, the method according to the invention for operating a dishwasher can provide that the circulating pump is preferably switched on and off repeatedly in the intermediate flushing stage for a predefinable or determinable duration, the duration of switching on the circulating pump and switching off the circulating pump dependent on a flushing liquid level in the flushing tank and / or the rotational speed of the circulation pump and / or a turbidity measurement of the rinsing liquid, wherein the maximum rinsing liquid volume is set as a function of the temperature of the rinsing liquid and / or the determined rinse aid concentration and / or the pH and / or the sieve contamination.

Claims (18)

Dishwasher, in which at least one known per se, designed for the dishwasher operation without combination preparations with multiple active ingredients rinse program is selectable,
characterized in that
at least one means for connecting an additional function is provided, by which at least one parameter of the selected washing program with respect to the use of a combination preparation with a plurality of active substances can be changed when this function is switched on. Dishwasher according to claim 1, wherein a condensation drying is feasible, wherein, preferably in the first third of this program section, at least one circulating air blower is switched on. Dishwasher according to claim 1 or 2, wherein in the connection of this function, the at least one parameter of the selected washing program with respect to the use of a combination preparation with a plurality of active substances is changeable so that the items to be rinsed in the program section rinse to a temperature of at least 58 ° C for the subsequent program section drying is heated. Dishwasher according to one of claims 1 to 3, wherein the selected washing program is changeable with regard to the use of a combination preparation comprising a rinse aid substance. Dishwasher according to one of claims 1 to 4, wherein the Spülflüssigkeitsvolumen is heated to a minimum temperature in the final rinse of 60 to 70 ° C. Dishwasher according to one of claims 1 to 5, which allows a temperature-dependent dissolution of the rinse aid. Dishwasher according to one of claims 1 to 6, wherein the additional function for a 3in1 combination preparation is designed with at least one cleaning substance, a softening substance and a rinse aid substance, which is used in the form of a pressed tablet, bead or as a powder or liquid. Dishwasher according to one of claims 1 to 7,
characterized in that
a switching means for switching on the additional function is arranged on the cover support of the dishwasher or in or on a metering device or is arranged elsewhere. Dishwasher according to claims 1 to 8,
characterized in that
On the dishwasher display elements are provided, which indicate the use of a combination preparation and / or certain process states or the entire course of a specially adapted to the use of a combination preparation or the selectable wash program. Method for operating a dishwasher, in particular according to one of Claims 1 to 8, with a washing program known per se for dishwasher operation without combination preparations with a plurality of active ingredients,
characterized in that
the rinse program when using a combination preparation with multiple active ingredients in its design and its course is adapted to the use of a combination preparation with multiple active ingredients. The method of claim 10, wherein a condensation drying is performed, wherein, preferably, in the first third of this program section, at least one circulating air blower is turned on. The method of claim 10 or 11, wherein the ware is heated in the program section rinse to a temperature of at least 58 ° C for the subsequent program section drying. The method of any of claims 10 to 12, wherein the selected rinse program is changed with respect to the use of a combination preparation comprising a rinse aid substance. Method according to one of claims 10 to 13, wherein the rinsing liquid volume is heated to a minimum temperature in the rinse of 60 to 70 ° C. Method according to one of claims 10 to 14, wherein a temperature-dependent dissolution of the rinse aid is made possible by the heating of the items to be washed to a temperature of at least 59 ° C. A method of operating a dishwasher according to any one of claims 10 to 15,
characterized in that
the adaptation of the wash program to the use of a combination preparation with optional switching on or off of an additional function for the use of a combination preparation and / or an automatic, substantially sensory detection of the use of a combination preparation. A method of operating a dishwasher according to any one of claims 10 to 16,
characterized in that
the rinsing liquid is actively heated at least in the cleaning and rinsing sections of the process as a result of switching on the heating medium and, if appropriate, the rinsing liquid is preferably heated passively without connecting these heating means in the intermediate rinsing section and / or the rinsing liquid is not actively heated during the pre-rinsing. A method of operating a dishwasher according to any one of claims 10 to 17,
characterized in that
during the intermediate rinsing and / or pre-rinsing, the intended heating means are switched on and off for a short time, this taking place repeatedly at different or equally long intervals below or near the solubility temperature of the cleaning substance and / or the softening substance and / or the rinse aid substance.

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