ES2396474T3 - Dishwasher machine and operating procedure of a dishwasher machine using a preparation combined with several active substances - Google Patents

Abstract

Dishwasher machine in which at least one known washing program can be selected designed for the operation of the dishwasher machine without preparations combined with several active substances, where at least one means of connection of an additional function is provided with which, in In the case of a connection of this function, at least one parameter of the selected washing program can be varied in terms of the use of a preparation combined with several active substances, characterized in that indicator elements indicating the use of a combined preparation and / are provided in the dishwasher or certain stages of development or complete development of a selectable washing program or specially adapted to the use of a combined preparation.

Description

Dishwashing machine and operating procedure of a dishwashing machine using a preparation combined with several active substances.

The invention concerns a dishwashing machine according to the preamble of claim 1 and a method of

Operation of a dishwashing machine according to the preamble of claim 10 and according to the preamble of claim 9. A dishwashing machine of this class has been disclosed, for example, by EPA-1 195 128.

The so-called 3-in-1 combined preparations for use in dishwashing machines have been obtained for a long time, which together contain a cleaning substance, a softening substance and a lightening substance 10 and are fed at the same time to the dishwasher machine washing container in a certain moment. These 3-in-1 combined preparations are available in the form of pressed tablets called 3-in-1 tablets and also in the form of 3-in-1 powder. The combined 3-in-1 preparations can be introduced into intended metering devices of the dishwasher machine; in this case, they are dosedly added to the washing container at a certain time which is determined by the development of the washing program of the dishwasher. On the other hand, they can also be placed by the user of the dishwasher in the dishwasher, for example in the cutlery basket, before the washing program is switched on. In general, more than one selectable washing program is now available to the user of a dishwasher to clean the soiled items placed inside the dishwasher. As selectable washing programs, programs under the names of short program, normal program 20, intensive program, economic program are well known, for which there are also very different synonym term formations. Since the use of combined preparations 3 in 1 by the user of the washing machine, customer complaints have been piled up before the manufacturers of the dishwasher machines. In fact, the results of cleaning and / or drying of the items washed and cleaned in the dishwashing machine have been dramatically worsened by using 3-in-1 preparations compared to the conventional individual dosed addition of the corresponding substances. It has been manifested as especially problematic that, on the one hand, users do not take into account the prescribed location of the combined preparations 3 in 1 in the dishwasher, so that some place the tablets 3 in 1 in the dishwasher, while that a use has been prescribed by the manufacturer exclusively by means of a dosing device. Likewise, the indications of the manufacturers of the 3-in-1 combined preparations or the selection of a suitable washing program 30 are not objectively correct, since the user of the dishwashing machine in general certainly knows which washing program to select according to of the degree of fouling and drying of the dirt particles, but it does not have in itself any deeper knowledge about the development of the washing program. This knowledge involves the manufacturer of the 3-in-1 combined preparation in the user and thus also leaves completely unattended the circumstance that different 3-in-1 combined preparations are present in the market that are dissolved differently depending on very different parameters and, consequently, they achieve maximum effectiveness at different times. Thus, some 3-in-1 combined preparations obtainable on the market work according to a so-called "dilution principle" (also known as the carry principle), that is, at the beginning of cleaning, the 3-in-1 combined preparation is added and it begins dissolve. In this case, the rinse aid is mainly added in a high concentration, that is to say, in an overdosed grade, and it is based on the consideration that, as a result of traces in traces of washing water and adhesions of the clarifier dissolved in the washed articles, the walls of the wash container and the roof of the wash container, as well as in the feed pipes, the concentration in the rinse pass is still sufficient to achieve a particularly good drying result. Another embodiment of the combined 3-in-1 preparation provides that only the detergent and the softener are dissolved first and that the rinse aid, which is encapsulated in the combined 3-in-1 preparation 45, for example in the form of balls wrapped with wax, is dissolve only depending on the temperature and / or depending on the pH value during rinsing. However, when a washing program is used that already works in the cleaning segment of the program with high temperatures and / or where the duration of the cleaning process is chosen very long, which is usually usual in an intensive program, it already dissolves the clarifier of the second class mentioned. The clarifier of the aforementioned first class has the disadvantage of 50 which, in case several segments of the washing program are executed before rinsing, such as cleaning, intermediate washing, the latter being intercalated, as is known, between the cleaning and rinse segments of the program, said rinse dissolves too quickly and thus, due to multiple changes of washing liquid, it is no longer present with a sufficient concentration in the rinse segment of the program. Another deficiency in the use of 3-in-1 combined preparations may occur when the user of the dishwasher machine 55 performs the dosed addition by placing, for example, a 3-in-1 tablet, before the start of the washing program, somewhere in the dishwasher, but not in the dosing combination. In this case, the detergent and the softener begin to dissolve, for example in the prewash segment of the program, and it can be generally observed in laboratory tests that the dissolution behavior of the 3-in-1 combined preparations is very good even in water that presents substantially certain temperature of the feed pipes. 60 Due to the discharge pumping, the substances in the combined preparation 3 and 1 in a lower concentration are available for the following cleaning segments of the program, possibly the planned segments of intermediate washing and rinse of the program, which has a direct impact on both the result of

cleaning as on the result of washing the items to be washed and this result is worse in general.

The problem of the invention is to propose a dishwashing machine and a method of operating a dishwashing machine that overcome at least one of the aforementioned disadvantages and provide a washing program that is adapted or adapted to the use of preparations combined with various substances active, the fundamental use of the washing programs known until now must remain possible for the user.

The aforementioned problem is solved with a dishwashing machine according to the characteristics of claim 1 and with a method according to the characteristics of claim 9.

According to the device of the proposed invention, at least one washing program can be selected in the dishwasher, such as, for example, an intensive program, a normal program, a short program, an economic program, by the user of the dishwasher machine The selection means are almost always found on a control panel of the dishwasher and are sufficiently known as such.

According to the invention, there is provided a means to connect an additional function, with which, when this function is connected, at least one parameter of the selected washing program can be varied as regards the use of a preparation combined with several active substances . This has the consequence that the washing program selected by the user, such as an intensive program, a normal program, a short program, an economic program, is automatically adapted to the use of a combined preparation which especially comprises a cleaning substance, a softening substance and a clarifying substance. This means that, when the additional function is interleaved, a signal corresponding to the control unit is provided, which automatically adapts the respective washing program selected according to the user to the use of combined preparations. To this end, different control development routines have been filed in the control unit microcontroller, for example, and / or different parameters of the washing program are accessed or accessed in a defined manner, such as, among others, the temperature, the duration of a particular segment of the washing program, the filling volume of the washing liquid, the pH value and others, and thus vary these parameters. An alternative solution is represented by an additional function in which a disconnection of a switching means operates according to the invention. In another embodiment of the invention, a washing program specially configured for special use with a combined preparation can be automatically selected as such, among other washing programs.

Preferably, the additional function is accommodated to the use of a 3-in-1 combined preparation, this combined preparation containing specific active substances for cleaning the items to be washed substantially only a cleaning substance, a softening substance and a clarifying substance. Regardless of these constituents, the combined 3-in-1 preparation may also have other substances whose direct or indirect influence on the result of cleaning and drying of individual segments of the washing program or on the result of total cleaning of the washing program are of secondary importance However, as long as other specific active substances of the combined preparation are not expressly cited, they are known and are also influenced in an influential manner by the object of the invention.

A switching means for connecting the additional function is also included, this being preferably located in the dishwasher machine panel holder next to other selection means and / or indication means. Another possibility of arranging the switching means is offered by the dosing device of the combined preparation in which the combined preparation is preferably loaded. In the execution of the switching means, the most diverse known executions are imaginable, such as rotary selector switches, pushbuttons or the like. Likewise, it is also possible to maneuver a switching means by means of a user-dependent selection, which can be connected by selection in a menu-guided selection device, for example in a display monitor, or in networked home appliances , through a graphic surface or possibly through a voice recognition system.

In the dishwashing machine, the use of a combined preparation, especially a combined 3-in-1 preparation, can be detected by at least one sensor, so that, for the configuration of the program development, it can be distinguished, on the one hand, if a combined preparation works according to the dilution principle or a combined preparation is used that dissolves the clarifier only in the rinse phase depending on the pH value and / or the temperature. On the other hand, in the case of a repeated sensor measurement during the entire development of the washing program, a variation of the concentration and / or the pH value and / or variations of the degree of hardness can be detected, for example. of the washing liquid, which allow conclusions to be drawn about the concentration of the different active substances of the combined 3-in-1 preparation, with the consequence that the development of the program is modified at any suitable time.

As sensors, at least one of the sensors is formed as a type of chemical and / or acoustic and / or thermal and / or optical and / or pneumatic sensor. These may be connected differently in terms of their number and their specific detection ability. Likewise, it is possible to take advantage of an evaluation of the signals of the sensors both with respect to the adaptation of the development of the washing program, referring to the use of the combined preparation 3 in 1, as well as with respect to the configuration of the other parameters of the entire development of the washing program Likewise, as an alternative, at least one chemical sensor provided with correspondingly selected receptors for the detection of, for example, several active substances that occur simultaneously, such as detergents and softeners and / or clarifiers, can recognize the use of a combined preparation and signal

5 also the use of a combined preparation without a connection of the additional function to the program development controller. Through repeated control measurements and / or by comparison with other sensor measurements during the development of the program, conclusions are drawn about the use of a combined preparation and the development of the program is varied accordingly. At present, the use of a sensor that recognizes at least the pH value and / or the temperature and / or the degree of hardness of the washing liquid is especially preferred.

10 During the development of the program or individual segments of the washing program, whose temporary or instantaneous evolutions can be preset by the program controller based on individual program parameters, for example with the help of a comparison of real-nominal value and / or a difference value and / or the evolution of the variation of a parameter, such as the pH value, the temperature, the cloudiness, the foaming concentration, the hardness of the water, the sensor or the intended sensors establish continuous or

15 discontinuously if a given active substance of the combined preparation exceeds or does not reach, for example, a predetermined minimum or maximum value. Also, for example, depending on a difference value that can be obtained, for example, depending on the manufacturer from the combined 3-in-1 preparation itself, results are also obtained with regard to other typical parameters such as concentration jumps, temperatures of dissolution or combinations of parameters such as pH value and concentration or concentration and temperature of the

20 development of the washing program. For a determinable time interval of a wash program development or for the entire duration of the washing program, the variation of at least one parameter of the washing program is also evaluated. Thus, for example, taking into account the evolution of the pH value of the washing liquid, it is possible to draw conclusions about the concentration of the different substances of the 3-in-1 combined preparation. At present, the pH value evaluation of such that the cleaning segment of the

25 program represents a maximum basic pH value, in the rinse segment of the program this pH value stays below the minimum in the amount of a preset value or the evolution of its variation, for example in a field of characteristic curves preset, is predefined within pre-set tolerances or jumps of the pH value (abrupt variation of the pH value) are detected within predefined time intervals or, on the other hand, time constants for their appearance are established, by example after

30 reached the dissolution temperature of an encapsulated rinse aid. According to the invention, such sensor measurements are used per se for active intervention in the development of the washing program when the additional function has been interleaved to adapt a development of the washing program to the use of a combined preparation; By selecting a specially configured development of the washing program, these measurements first have a kind of control function to establish whether a combined preparation is actually used.

35 during the development of the program or at least one specific active substance is present for a predetermined time in a sufficient concentration; adaptations of the washing program development can optionally be made.

An appropriate method of evaluating the measurement signals of the sensors is to establish, for example, the value or variation of certain parameters of the washing program, such as cloudiness, pH value, foam formation, concentration, hardness of the water and others, both individually and in suitable combinations, at characteristic moments of the development of the washing program, regarding its qualitative and quantitative appearance and also its delay times between them. To this end, at least some parametric values can be acquired within certain time intervals or time distances and these can be subjected to a real-nominal collation, a difference value formation or a threshold value query or the 45 variations with respect to pre-set or acquired values in the development of the program, all comparative values being archived in tables or as default values in at least one memory unit of the program controller. In networked household appliances, this memory unit can also be located outside the dishwasher. Likewise, certain program states whose combinations of combinations are not, for example, 50 desirable and can invite the user to perform certain manipulations can also be stored in the memory unit. Such unwanted constellations occur, for example, in the prewash segment of the program when there is a high foaming and / or net fluctuations in the pH value, or a predetermined concentration of the lighter is not reached during all segments of the program or there are jumps of the concentration of the clarifier regardless of a given temperature or temperature evolution. Depending on the error situation presented,

The user may be invited, for example, to place a combined preparation in the dosing combination or the development of the program is interrupted until, depending on the user, a new start-up of the dishwasher is made or indicated at least the measurement result recognized as erroneous.

In the prewash or cleaning segment of the program it can be provided that the instant be monitored further

60 of the actual dosed addition of the 3-in-1 combined preparation; for example, by means of an acoustic sensor the fall of a tablet of the dosing chamber in the washing container is detected. Other detection possibilities are offered by optical sensors that, for example, register a reinforced foam formation, or by sensors

Chemicals that evaluate the variation of the pH value of the washing liquid.

As a further advantage, in the case of an optionally modified combined preparation, in which, for example, an enzymatic cleaning substance with an efficiency temperature limit of approximately 30 ° C and a clarifying substance with a dissolution temperature of approximately 50 ° is incorporated, with Program segments provided simultaneously shortened and, therefore, a shortened dissolution duration, the washing liquid is heated preferably at the end of the respective process segment by means of a short duration and possibly also repeated connection and / or controlled power delivery or regulation of the heating means to the prewash and / or intermediate washing segments of the process, whereby the respective chemical substance can better display and for a longer time its full effectiveness for the following cleaning or rinse segments of the process, which are run with hot washing liquid . Thanks to the preheating or the reinforced heating of the washing liquid at the end of the preceding segment of the washing program, the dissolution and, therefore, the effectiveness of the detergent or the rinse aid are improved during the duration of each program segment. The energy fed for it is comparable to an activation energy. Under a planned control or regulation of the temperature, the dissolution duration, the concentration, the time of action and the instant of release of a chemical of the combined preparation 3 in 1 can be optimized.

It is especially advantageous here that, depending on the user, the 3-in-1 combined preparation actually used is set as a parameter of the program controller, for example by means of data entry through an image acquisition that recognizes, for example, the code of bars of a 3-in-1 combined preparation, or that 3-in-1 combined preparations are selected deposited in the program's memory and available on the market or that the use of a certain combined preparation can be entered by the user or stored the information predetermined depending on the user on the use of a combined 3-in-1 preparation determined up to a variable input of information or until the beginning of an instant or definite predetermined.

As an additional advantage, when information on the nature and form of administration of the cleaning, rinsing and possibly softening substances fed is consulted or evaluated, a product not uniquely identified as a combined 3-in-1 preparation can disconnect a 3-in-1 function falsely selected by the user or, in case of selecting a 3-in-1 program, an error message can be issued.

It is also advantageous that, when the 3-in-1 function is connected or when selecting a 3-in-1 wash program, the indication for washing program states that are connected in conventional washing programs with individual dosing of substances is switched off or suppressed, such as, for example, by disconnecting an indication LED at the instant of the regeneration process or an indication LED that invites to replace the clarifier.

If a washing program is selected by the user of the dishwasher after adjustment of soiled laundry items in the dishwasher, a combined preparation is added to the dishwasher and an optionally connected selection means indicated by the use of a Combined preparation, the program development controller provides, taking into account the additional function, which varies the development of the selected washing program and this is adapted in its total configuration to the use of a combined preparation. In this case, depending on the selected washing program, they are automatically adapted in the manner described below in substantial dependence on the evaluation of preset sensor measurements, or some or several parameters of the different segments of the different segments are fixed in a fixed preset manner. prewash, clean, intermediate wash, rinse the wash program.

The steps indicated here in the procedural claims do not represent, in regard to their order of succession, any forced need for the development of the washing program, but can be selected, repeated and / or connected in a deliberate manner, for example depending on the use of a particular combination preparation or of the type of the combination preparation, or they may be followed by other known steps of the program itself.

When a dosing combination with storage chambers usually separated for the cleaning substance and the clarifying substance is used, the use of a combined 3-in-1 preparation eliminates the rinse and possibly detergent dosing function in the selected washing program. In an alternative embodiment it is possible that, when determining the concentration of the rinse aid, for example depending on the sensor, it is subsequently dosed in the necessary quantities, which compensates for possible dilution losses of the previous segments of the washing program. Whenever, during the selected washing program, other opening moments of the dosing device are provided to release very different substances, these instants are also blocked or the moment of the dosed addition of a certain substance is moved and / or this substance is varied in the quantitative dosage.

When, in addition to the cleaning substance and the clarifying substance, a softening substance has also been added to the combined preparation which should make it unnecessary to soften in a known manner in the dishwasher by means of an intended softening device, then the

regeneration of the softener with saturated saline solutions (brine), which, as is known, must be carried out in a dishwasher; therefore, in the development of the program the regeneration function is suppressed, that is, the aggregation of a defined volume of brine to the softening device, which is otherwise provided at a defined moment in the development of the program. As an alternative, in the case of a 5-hardness sensor that can determine the water hardness of the washing liquid, the hardness of the water actually present in the dishwasher can be monitored, if necessary, as a result of softening with the softening substance of the combined preparation and eventually the regeneration function of the softener can be connected, whereby a partial softening of the water is carried out by means of the softening device. In hard water regions, as the experience teaches, the softening power of the softening substances 10 of a 3-in-1 combined preparation. For this reason, it is especially advantageous that the information on the degree of hardness of the water actually used of the supply pipe intervene in the program development configuration. The degree of water hardness can be entered and stored, for example, by the user through a specially designed input function, for example on the control panel, or it can be adjusted in a mixing device, retransmitting corresponding means the setting value of the

15 water hardness to the program development controller and enabling, if a 3-in-1 function or a selection of a 3-in-1 washing program is connected, the regeneration function connection and / or at least mixing of hard water with soft water, at least in a preset instant.

It is planned to continue carrying out the current water supply through the softening device irrespective of its softening capacity, which is exhausted by increasing the number of changes of washing liquid depending on the degree of hardness of the fed water. All other water feeding alternatives are certainly possible from a theoretical point of view, but they are suitable only when preparations combined with a softening substance can continue to be obtained in a standardized manner. The volume of water for the regeneration function reserved in a definite manner, possibly in the storage container of the dishwashing machine, can be used totally or partially alternatively in water regions

25 soft as a defined volume in the liquid conduction segments of the program to size a predetermined liquid volume.

If the use of a combined preparation is recognized by a sensor during an initial prewash or its use is indicated by an additional connected function, then the duration of the prewash segment initially provided for in the program can be shortened in order to prevent Cleaner and rinse active substances 30 are dissolved too early and present in the cleaning or rinse segments in too small a concentration. When, on the other hand, a washing program is selected that provides for two or more prewash segments with a respective complete water change, it is thus prevented already prophylactically, by elimination of at least one prewash or by reduction to a prewash segment of the program, even without the detection of a combined preparation, that an introduced combined preparation is dissolved too early

35 wrongly in the dishwasher instead of being introduced in the dosing combination.

If, as explained above, the prewash segment of the process is shortened or completely suppressed, the time for requesting the items to be washed with water is reduced and thus the process of initiation of the process is shortened or completely canceled. solution of persistent soiling that may have already been attached to the items to be washed for a long time. In some cases of fouling, this does not contribute to

40 encourage a good cleaning result. For this reason, the process cleaning segment is preferably lengthened in such cases with the duration of the process segment to the extent that the process prewash segment has been shortened. Thus, the initiation of the dissolution of the dirt particles moves at least partially to the cleaning segment of the process.

The number of intermediate wash segments between the cleaning and rinse segments of the program is reduced

45 in an especially preferred way to an intermediate washing segment that has substantially the task of removing individually adhered dirt particles and chemical residues from cleaning. As an additional advantage, intermediate washing can be carried out with a reduced maximum volume of washing liquid compared to the predetermined maximum volume of washing liquid of the cleaning segment of the program, so that the concentration of the dissolved clarifier is higher than in the case of an equal volume of liquid of

50 cleaning, as in the cleaning operation. If, during the cleaning segment of the program, the washing liquid is diluted several times and / or a small degree of fouling of the washing liquid has been recognized by a corresponding cloud measurement, then, eventually, the entire liquid can be dispensed with intermediate wash segment.

In the intermediate washing segment of the procedure, which is run with a mild washing liquid and, by

Therefore, it does not provide for any active heating by connection of planned heating elements, the energy stored during the segments of the process that are run with hot washing liquid is subtracted. In order to configure the development of the process in an energetically favorable manner and, as described above, also saving water and, therefore, increasing the concentration of the lighter in the intermediate washing segment of the procedure, it can be provided that, by means of a connection and disconnection repeated

60 of the circulation pump with a differently determinable and / or preset duration of the connection status and

Disconnection of the circulation pump, the washing liquid is supplied to the items to be washed in the manner of a pulse wash. When the circulation pump is disconnected, the circulation of the washing liquid is interrupted and, therefore, the request for the articles to be washed with washing liquid is also interrupted. This kind of pulse washing is briefly described with a sequence of spray, pause, spray, pause, spray, pause, etc.

At the end of at least one segment of the process, such as, for example, intermediate washing, a dilution step may be provided depending on the measurement of the cloudiness and / or the content of the rinse in the washing liquid. The dilution step causes a partial volume of the washing liquid that has been used during the intermediate wash to continue to be used in the subsequent rinse segment of the process and mixed with the supplied fresh wash liquid. As a consequence of the dilution step, the loss of especially rinse aid is reduced compared to a complete discharge pump and a complete replacement of washing liquid. It is precisely for this reason that a dilution step, instead of pumping the entire discharge of the washing liquid, for example at the end of a segment of the washing program, may also be provided independently of the measurement of the cloudiness of the washing liquid. .

As an additional or alternative step, the temperature is preferably reduced in the process steps before the rinse segment of the program, preferably in the cleaning segment of the process, at a temperature below the rinse solution temperature, preferably below 58 ° C. This prevents, for example, a selected intensive program, which usually runs the cleaning segment at temperatures between 58 and 70 ° C, which, when using a preparation combined with a release of the clarifying substance as a function of temperature, is If necessary, dissolve here and, as a result, it will be too small in the rinse segment of the program.

In the rinse segment of the program, the items to be heated are heated to a temperature of at least 58 ° C for the subsequent drying segment of the program and thus the dissolution of the rinse aid is also possible depending on the temperature and possibly depending on the pH value. .

The evolution of the temperature of the washing liquid during a selected washing procedure that has been automatically adapted, as mentioned above, to the use of combined preparations, is advantageously determined, on the one hand, by the dissolution temperatures of the different substances chemical On the other hand, according to energy criteria during prewashing, if this is done, the washing liquid is not heated by connection of planned heating means, so that the washing liquid depends substantially on the water supply temperature. During the cleaning and rinsing, the washing liquid is actively heated as a result of the connection of the planned heating means, and in the intermediate washing segment of the program, it is passively heated without connection of these heating means, that is, taking energy of the heat capacity of the dishwasher, up to clearly a temperature below the dissolution temperature of a temperature dependent rinse aid.

For example, it is possible to allow that, having selected the 3-in-1 function, some integral parts of the washing program are developed totally or partially according to a definite predetermined program or to adapt totally or partially, in an appropriate way, the recognition and evaluation of determined parameters, for example by sensors, to the actual situation with respect to a predetermined nominal situation.

The connection of the 3-in-1 function or the selection of a 3-in-1 washing program can also be carried out, if necessary, even in networked household appliances that are operated independently of their location by a central computer not located in the dishwasher.

Apart from the already known selectable washing programs consisting of a normal program, an intensive program, an economic program and a short program, a special 3-in-1 washing program can also be provided that is adapted in advance to the use of combined preparations, especially those that contain both detergent, softener and lightener. This 3-in-1 washing program is directly selected by the user of the dishwashing machine and is characterized by the essential procedural steps mentioned below, although the sequence of procedural steps mentioned here, but not necessarily, represents a possible development of the washing program without the final drying segment of the program:

Variation or disconnection of the softener function of the regeneration device and / or variation or disconnection of the opening of special storage chambers of the dosing device for especially, apart from the combined preparation, other individually stored chemical substances (detergent, rinse aid) and / or variation of the amount of dosed addition of stored chemicals.

Disconnection of corresponding indicator elements for functions that are disconnected beforehand, that is to say they are preset, during the development of the program by means of at least the program development controller, preferably disconnection of the regeneration indication with regeneration function disconnected by the regeneration device and / or disconnection of the indication of replenishing clarifier with automatic dosing addition at least disconnected from the clarifier.

The prewashing is carried out with cold water, that is to say it depends substantially on the temperature of the water supply pipe, for an extremely short period of time from 2 to 5 min, preferably 2 to 3 min. During this time it is possible to release mainly fresh soiling and soften soiling

5 adhered for quite some time. Depending on an optional clouding measurement of the liquid, one or more dilution steps of the washing liquid can be provided in the case of a resistant fouling, a dilution step being preferably provided at the end of the prewash due to the short duration of This prewash. If no dilution step occurs at the end of the prewash, the washing liquid is then completely changed before the next segment of the program.

10 The washing liquid fed here as fresh, which may also be diluted and therefore impurified to some extent, is now heated in the cleaning segment of the process to a temperature that is below the rinse aid dissolution temperature, preferably between 40 and 57 ° C.

The combined preparation is fed by the dosing device to the washing container preferably within the first third of the program cleaning segment, provided that the combined preparation has been placed

15 by the user in the washing container, for example in the cutlery basket, before the start of the washing program.

At the aforementioned temperature, the washing liquid is circulated in the washing vessel during cleaning within a period of about 10 to 30 minutes, and at the end of the cleaning segment of the process, the liquid is completely pumped and discharged. It is diluted. This decision can be made.

20 depending on an optionally clouding measurement of the washing liquid.

If at least one measurement of clouding of the washing liquid is carried out, then several dilution steps can optionally be carried out depending on the degree of fouling and / or the concentration of individual constituents of the combined preparation. The cleaning segment of the process is followed by an intermediate washing segment of the process in which the fresh or diluted washing liquid now exists is passively heated, that is, exclusively by extracting energy from the heat capacity of the dishwasher, with which this liquid removes during its circulation the last remains of dirt still existing and chemical waste from the cleaning segment of the procedure. The circulation of the washing liquid takes place in the intermediate washing segment of the process for a period of approximately 2 to 10 minutes. Alternatively, the intermediate wash can also be executed as a pulse wash with a

30 reduced maximum volume of washing liquid with respect to the maximum volume of washing liquid of the cleaning phase.

The intermediate washing segment of the procedure is concluded with a complete or partial emptying.

In the rinse segment of the process, a volume of defined washing liquid is fed to the washing vessel. This may have been calculated in advance as fixed and / or can be adjusted as a variable based on 35 very different parameters. A dependent magnitude is here the concentration of the rinse aid then actually present in the washing liquid, since it exerts a direct influence on the result of the rinse and, therefore, on the drying result subsequently obtainable from the washed items. Thus, in the case of a small concentration of the rinse aid at the beginning of the rinse segment of the program, the washing liquid will be fed as small as possible, but eventually depending on the degree of cloudiness 40 of said washing liquid. If, on the other hand, the concentration of the rinse aid at the beginning of the rinse segment of the program is above average or high enough, then the concentration of the rinse aid can then be adjusted by feeding a volume of washing liquid defined to a predetermined concentration. . The rinsing liquid with an already dissolved rinse and also the rinse still pending dissolution are now preferably heated to a dissolution temperature above the dissolution temperature of a rinse that dissolves depending on the pH value and / or as a function of temperature This dissolution temperature is currently above 58 ° C (for the combined 3-in-1 Calgonit Powerballs!). For a period of 2 to 10 minutes, but also at least until reaching a pre-set temperature of preferably 65 to 70 ° C at present, the washing liquid is heated and circulated. At the end of the rinse segment of the program, as much washing liquid as possible is removed from the washing vessel by

50 means of a discharge pump.

The residual liquid that remains in the washed articles, on the roof of the washing container and on the walls of the washing container and the water vapor are removed in the drying segment of the program following the rinse segment of the program. Drying is preferably carried out here as condensation drying. At least one air circulation fan is connected during condensation drying, provided that it is

55 present, preferably in a first third of this program segment.

The intermediate wash during the liquid conduction segments of the process may preferably be configured as a pulse wash, that is to say during the intermediate wash segment of the process.

procedure the circulation pump is repeatedly switched on and off for a preset or determinable period of time. The duration of the connection of the circulation pump and the disconnection of the circulation pump depends here on a level of cleaning liquid in the washing vessel corresponding to a lower filling level at which the circulation pump does not aspirate air. As a result of the limited factor mentioned above, there are other dependencies regarding the number of revolutions of the circulation pump, which extracts more washing liquid from the sump as the number of revolutions increases. The configuration of the impulses of the connection and disconnection of the circulation pump is also adjustable based on a measurement of the washing liquid cloudiness, and thus, with a small degree of fouling, the duration of the connection of the circulation pump compared to the duration of the disconnection of the circulation pump and, with a high degree of fouling, this duration can be correspondingly lengthened. Depending on a measurement of the pH value and / or the temperature of the liquid and / or an established rinse aid concentration, the maximum volume of washing liquid existing during a liquid conduction segment of the process can be adjusted, preferably in the intermediate washing segment of the procedure. Thus, influence can be exerted on the dissolution behavior and / or the concentration of the clarifier and / or one of the other substances of the combined preparation. If a combined preparation containing a clarifier having a solution temperature dependent on the temperature and / or pH value is used, a determined pH value can be achieved during the intermediate wash, preferably in the neutral pH range. This eventually presupposes a high volume of washing liquid during the intermediate wash and also that this pH value can be reached by one or several dilution steps provided during the intermediate wash.

In an exemplary embodiment, the invention is explained in more detail by means of an operating procedure of a domestic dishwashing machine that is suitable for use of 3-in-1 combined preparations, that is, those containing the active substances consisting of detergent, rinse aid. and softener.

The unique figure shows here an outline of the different segments of the procedure of a washing program development. It is assumed here that the water in the feed pipe is substantially soft and therefore has a small degree of hardness.

In the ordinates of curve A the time and in the abscissa is recorded, not to scale, the volume of washing liquid in the washing vessel is recorded, not to scale. Some important parameters for the development of the program, which are essential for a particularly good cleaning result of the washed items, are identified by corresponding arrows. Preferably, at the beginning of the washing program automatic dosed addition functions are suppressed that do not include the contribution of a combined 3-in-1 preparation; this affects in any case the automatic dosed addition of the clarifier; the automatic regeneration function is also suppressed. In the figure it can be seen that the washing program is carried out with a pre-wash of a very short duration of 2 to 5 minutes at the temperature of the water supply pipe. In this segment of the program, chemicals are not preferably added to the dishwasher to improve the prewash result. However, it cannot be prevented in this case that the combined 3-in-1 preparation has already been erroneously added by the user before the start-up of the dishwasher. After a complete discharge pumping of the washing liquid at the end of the prewash segment of the program, identified by the arrow VV, fresh washing liquid is fed to the washing vessel. This is limited to a maximum volume of planned washing liquid of approximately 4 l, calculated for a dishwasher that is intended to receive 12 standardized table services. At the beginning of the cleaning segment of the program, the washing liquid is heated by connection of a planned heating means. The washing liquid must here reach a temperature of approximately 55 ° C, which corresponds at this time of the invention to a temperature below the dissolution temperature of the rinse aid of the 3-in-1 combined preparation dissolvable depending on the pH and temperature, such as, for example, Calgonit Powerballs! In the first third of the cleaning segment of the program, the combined preparation 3 in 1 is added, preferably during the feeding of the washing liquid (identified by the arrow 3 in 1).

The washing liquid is circulated for 10 to 30 minutes in the washing container at the maximum preset temperature and thereby requests the items to be cleaned. At the end of the program cleaning segment, the washing liquid is almost completely removed from the washing container (identified by the VR arrow). The volume of the washing liquid is replaced again for a subsequent segment of intermediate washing of the program and this volume is heated and circulated exclusively by energy extraction that is stored in the calorific capacities of the dishwasher. The maximum volume of the washed washing liquid can be varied depending on a cloudiness measurement and / or an existing rinse aid concentration measurement that works according to the dilution principle. Thus, as represented in a dotted line, the volume of washing liquid is preferably increased with a high degree of fouling and / or a high degree of concentration of the rinse aid and / or with a strongly basic means of the washing liquid. With a small degree of fouling and with an already quite low concentration of the rinse aid with respect to the concentration that is necessary in the rinse, and / or with an already neutral washing liquid, the volume of washing liquid is reduced, as is Represents with dashed line.

The intermediate washing segment of the process transitions to the rinse segment of the program after a dilution step or after a complete discharge pump, not shown, for example depending on the

degree of cloudiness For this purpose, the volume of washing liquid is at least partially increased and preferably the maximum volume of existing washing liquid of the program cleaning segment is reached. On the other hand, as an alternative, the volume of washing liquid can also be adjusted exactly to a pre-set concentration range of the rinse aid by correspondingly evaluated measurement results of the intended sensors. The value of the volume of washing liquid to be fed has to be calculated by the calculation unit of the program development controller. Therefore, the duration of the intermediate wash varies between 2 and 10 min and the duration of the rinse varies approximately between 2 and 15 min. The volume of washing liquid is now increased in a further development of the program at a temperature above a rinse solution temperature dependent on the pH or temperature value; the dissolution temperature of

The rinse aid is currently at about 58 ° C, so that it is heated in the rinse to a minimum temperature of 60 to 70 ° C. At the end of the rinse segment of the program, the washing liquid is almost completely removed from the washing vessel (identified by arrow VK). The rinse segment of the program is followed by a drying segment of the program, but this has not been shown here in detail.

As an example, it is also possible to imagine a configuration of the development of the program or a procedure in the

15 that the invention described above is reversed, that is to say that all the preset programs are designed for the use of combined preparations (3 in 1) and it is possible with the aid of a maneuvering switching means an adaptation to the use of detergent agents, clarifiers and Individually stored or dosible softeners of the selected wash program.

Claims (15)

one.

Dishwashing machine in which at least one known washing program can be selected designed for the operation of the dishwashing machine without preparations combined with several active substances, where at least one means of connection of an additional function with which In the case of a connection of this function, at least one parameter of the selected washing program can be varied in terms of the use of a preparation combined with several active substances, characterized in that indicator elements indicating the use of a combined preparation and / or certain developmental states or the complete development of a selectable washing program or specially adapted to the use of a combined preparation.

2.

Dishwashing machine according to claim 1, wherein the additional function is designed for a combined 3-in-1 preparation with at least one cleaning substance, a softening substance and a lightening substance, the preparation of which is in the form of a pressed or shaped tablet of balls or powder or liquid.

3.

 Dishwashing machine according to any one of claims 1 or 2, characterized in that a switching means for connecting the additional function is arranged in the support of the control panel of the dishwasher or in or on a metering device or elsewhere.

Four.

 Dishwashing machine according to any one of claims 1 to 3, characterized in that at least one sensor is provided whose measurement values can be deliberately captured and evaluated, so that it can be clearly influenced by the program control unit of the dishwasher machine on the development of the selected wash program and / or, if necessary, the program control unit deliberately induces other sensor measurements and / or queries dependent on a data entry before at least one defined intervention is carried out in the development of the washing program

5.

 Dishwashing machine according to claim 4, characterized in that at least one chemical sensor and / or at least one acoustic sensor and / or at least one optical sensor and / or at least one thermal sensor and / or at least one pneumatic sensor are arranged in the dishwasher.

6.

 Dishwashing machine according to any of claims 4 or 5, characterized in that, with the aid of at least a comparison of nominal-real value and / or a difference value and / or the variation of at least one parameter of the washing program consisting of the value from pH and / or temperature and / or cloudiness and / or foaming and / or concentration, it can be recognized continuously or discontinuously to what qualitative and / or quantitative extent the release of at least one specific substance has been effected of the combined preparation, and / or because they are stored in at least one unit of the program controller's memory instants and / or time intervals for specific sensor measurements and / or nominal values and / or threshold values and / or other comparative values for Evaluate these sensor measurements.

7.

 Dishwashing machine according to any of claims 4 to 6, characterized in that it can be detected by means of at least one sensor provided, preferably during the first liquid conduction segment of the washing program, if a combined preparation has been introduced into the dosing device or at another site of the dishwasher, preferably in a cutlery basket, and / or because it can be recognized at least once during the development of the washing program by at least one measurement of a sensor if a clarifying substance exists in the Combined preparation has already been added to the washing liquid at an earlier or defined time during the development of the program or this substance is preferably released only in the rinse segment of the program and / or if it has been exceeded or not reached. defined concentration of the clarifier.

8.

 Dishwashing machine according to any one of claims 1 to 7, characterized in that a recognition device is provided, especially an image recognition device, with which information about the use of a given combined preparation can be acquired.

9.

 Operating procedure of a dishwashing machine, especially according to any one of claims 1 to 8, with a known washing program designed for the operation of the dishwashing machine without preparations combined with various active substances, in which, when using a prepared in combination with several active substances, the washing program is adapted in its configuration and its development to the use of a preparation combined with several active substances, characterized in that the use of a combined preparation is indicated by means of indicator elements provided in the dishwasher and / o determined development states or the total development of a selectable washing program or adapted to the use of a combined preparation.

10.

 Operating procedure of a dishwashing machine according to claim 9, characterized in that the adaptation of the washing program to the use of a combined preparation is carried out by means of an optional connection or disconnection of an additional function for the use of a combined preparation and / or by means of a substantially sensory automatic recognition of the use of a combined preparation.

eleven.

 Operating procedure of a dishwashing machine according to claim 9 or 10, characterized in that the adaptation of the washing program to the use of a combined preparation comprises at least one of the following actions:

a) the dosed addition of certain substances that are stored in the dosing device is displaced over time and / or the amount of the dosed addition is varied or completely suppressed; b) the automatic regeneration function of the regeneration device is connected as long as it is not detected by a hardness sensor provided for exceeding or not achieving a defined degree of hardness and / or is detected by a user-dependent adjustment in the dosage of regeneration a defined degree of hardness of the washing liquid, and / or, when the additional function is connected, is carried out through a device 10 of program-controlled data entry the integration of the regeneration function, whereby a defined degree of hardness of washing liquid is exceeded, the degree of hardness of the washing liquid is reduced together by at least a temporary reconnection of the regeneration function and / or a mixing of the washing liquid with soft water; c) at the beginning of the washing program a dosed addition of the clarifying substance is blocked from the 15 dosing combination; To this end, a corresponding default value is set and stored in a memory unit of the program controller, this default value being reset in case of recognition of the lighter concentration drop below a definable concentration value and / or adding a lightening substance in a definable volume of the washing liquid at a definable moment of the program development and / or until a minimum definable concentration value is reached, this addition being made 20 preferably only in the rinse segment of the program; d) during the development of the program an addition of a defined brine volume is suppressed or integrated into a softening device depending on the conduct of the procedure of the program segment actually executed b) with respect to the regeneration function; e) the user with corresponding indicator elements is informed about the actual status 25 and / or the nominal status of at least one parameter of the washing program or an indication and / or invitation derived therefrom; f) the duration of at least one segment of the program is preferably shortened or reduced to zero; g) the duration of two segments of the process is lengthened and / or shortened, preferably the segments of prewashing and cleaning and / or cleaning and intermediate washing of the program, the duration in time being 30 lengthening and shortening in a definable relationship; h) one or more intermediate wash segments provided are reduced to one or no intermediate wash segments; i) at least in one segment of the program the washing liquid is applied on the items to be washed in the manner of a pulse wash by means of a single or repeated connection and disconnection of the circulation pump 35 with a differently determinable or preset duration of the state of connection and disconnection of the circulation pump or by a regulated or controlled variation of the number of revolutions of the circulation pump; j) during at least one segment of the program, preferably at the end of the prewash, cleaning and / or intermediate washing segments of the process, at least one dilution step is performed with reduction of the dirt concentration of the washing liquid as a function of at least one measurement of cloudiness and / or of the concentration of at least one active substance in the washing liquid or independently of it; k) the maximum temperature in segments of the program preceding the rinse is reduced, especially in the cleaning segment of the process, at a temperature below the dissolution temperature of the rinse substance; 45 l) in the rinse segment of the program is heated to a temperature that is above the dissolution temperature of the rinse substance. 12. Operating procedure of a dishwashing machine according to any one of claims 9 to 11, characterized in that at least in the cleaning and rinsing steps of the process, the washing liquid is actively heated as a result of the connection of planned heating means and eventually in the The intermediate washing segment of the process is preferably passively heated the washing liquid without connection of these heating means and / or during the prewash the washing liquid is not substantially actively heated. 13. Operating procedure of a dishwashing machine according to any of claims 9 to 12, characterized in that during the intermediate washing and / or prewashing, the switches are switched on and off for a short time. 55 planned heating means, this being carried out repeatedly at different intervals or of equal length below or near the solubility temperature of the cleaning substance and / or the softening substance and / or the clarifying substance. 14. Method according to any of claims 9 to 13, characterized in that at least One of the following procedural steps in the development of the washing program adapted to the use of a combined preparation: a) variation or disconnection of the softening function of the regeneration device and / or variation or disconnection of the opening of special storage chambers of the dosing device; b) disconnection of corresponding indicator elements for functions that are disconnected beforehand, that is, in a pre-set way, during the development of the program by means of at least the controller of the program development; c) prewash with cold wash liquid dependent on the temperature of the water supply line with a prewash duration of preferably 2 to 5 minutes; complete change of the washing liquid at the end of the prewash segment of the process, one or more dilution steps being able to be performed with a change of liquid during the prewash; 10 d) heating the washing liquid in the cleaning segment of the process to a temperature that is below the rinse solution temperature, preferably between 45 and 57 ° C; e) dosed addition of the combined preparation during the heating phase of the washing liquid in the cleaning segment of the program, preferably at the beginning or in the first third of the cleaning segment of the program; 15 f) circulation of the washing liquid inside the washing container in the cleaning segment of the program at a cleaning temperature (40 to 57 ° C) for a period of 10 to 30 minutes, the washing liquid being completely pumped and discharged to the end of the cleaning segment of the procedure, possibly depending on the result of a measurement of clouding of the washing liquid, or concluding the cleaning segment of the procedure with a dilution step, being able to execute Optionally several dilution steps during cleaning; g) passive heating of the cleaning liquid in an intermediate segment of the process, which is fed as fresh liquid or mixed with washing liquid of the cleaning segment of the program, and circulation of the washing liquid in the washing container for a period of time. of time from 2 to 10 minutes; h) termination of the intermediate washing segment of the procedure with a complete or partial emptying, starting The latter is a dilution step for the next segment of the procedure; i) replacement of the washing liquid to a defined and / or variably adjustable level of the washing liquid in the rinse segment of the program, heating of the washing liquid by connection of the heating means provided above the dissolution temperature of the lightening substance of the combined preparation, preferably at a temperature of 58 to 70 ° C, and circulation of the washing liquid with 30 the clarifier dissolved or diluted and washed away; j) complete emptying of the washing liquid from the washing container at the end of the rinse segment of the procedure, only when it has not fallen below a defined concentration of the rinse substance for a defined time interval in at least the rinse segment of the program 15. Operating procedure of a dishwasher according to claim 14, characterized in that 35 the circulation pump is repeatedly switched on and off for a preset or determinable period of time, preferably in the intermediate washing segment of the procedure, where the duration of the circulation pump connection and the circulation pump disconnection it depends on a level of washing liquid in the washing vessel and / or the number of revolutions of the circulation pump and / or a measurement of the clouding of the washing liquid, and where the maximum volume of washing liquid is adjusted existing in 40 function of the temperature of the washing liquid and / or the established concentration of the rinse aid and / or the value of the pH and / or fouling of the filter.