EP1699344B1 - Dishwasher with device for storage of rinsing water - Google Patents

Abstract

A dishwasher is provided with a storage container for rinsing water, the dishwasher being particularly simple and economical to produce, whereby the space loss in the dishwasher is kept very low. The storage reservoir is a flexible film bag, which may be matched in volume to the volume of the liquid.

Description

The invention relates to a dishwasher with a device for storing wash liquor and a method for storing wash liquor.

In a dishwasher rinsing after a wash program, consisting generally of the partial program steps "pre-wash", "cleaning", "intermediate rinse", "rinse" and "drying" carried out to clean the dishes located in the dishwasher. In order to achieve the best possible cleaning effect, a pre-rinsing is usually provided in the washing program of several partial program steps. First, the coarse contaminants are removed from the items to be washed by means of a first wash liquor and removed from the dishwasher after completion of the pre-wash cycle with the first wash liquor. Subsequently, the dishwasher fresh water is supplied to further part program steps, eg. B. Clean, perform with new rinse.

From the DE 297 06 153 U1 is a dishwasher with water storage and condensation drying known. In a storage tank as a water storage is heated water of the last rinse cycle stored and subsequently added back into the washing chamber of the dishwasher. The drying of the dishes takes place according to the condensation principle. From a blower air is sucked in from the rinsing chamber via a suction line and passed through a condenser with a delivery line in the storage container. In the storage tank, the air is reheated after cooling in the condenser and the rinsing chamber fed again.

From the DE 39 13 355 A1 is a washing machine or dishwasher with a means for caching used washing and / or rinse liquor for reuse at a later date known. The duration of the temporary storage is recorded in terms of time, and upon reaching or exceeding a predetermined period either a display or a signal is triggered or via a control device put the drain pump for pumping the cached washing and / or flushing into the drain in operation.

From the DE 42 43 605 A1 The applicant is aware of a method for operating a dishwasher and a dishwasher for carrying out the method. At the end of a partial program step intermediate rinsing, the rinsing liquor is removed from the rinsing container, stored in a storage container and returned to the rinsing container in the following rinsing program in the first partial program step. The disadvantage here is that the reservoir does not adapt to the spatial conditions, which causes unnecessary loss of space. In addition, a complex ventilation device is required for the reservoir.

The EP 05 46 348 A1 is concerned with a household dishwasher, the pocket-shaped, foldable, that has flexible reservoirs or storage in a rigid or massive container. These flexible storage bags are used inter alia, the intermediate storage of washing liquid.

In the washing machine of EP 0 800 785 A2 is pumped by the drain pump, ie wastewater pump, during the Abpumpphase a washing program carried out wastewater in a solid, rigid storage container for later reuse. The same design principle is also in the washing machine or the dishwasher of EP 0 607 628 A1 used.

Even with the washing machine EP 0 771 898 A2 Only a rigid, solid storage tank for temporary storage of wash water from the last wash of a running wash program is used.

The object of the present invention is therefore to provide a dishwasher and a method for operating a dishwasher, in which the storage container for the rinsing liquor is particularly simple and inexpensive to manufacture and on the other hand kept the loss of space in the dishwasher by the storage tank very low is and / or also the rinsing solution in the storage tank can be stored for a long time without major nucleation.

The object is achieved according to the present invention by a dishwasher with the features of claim 1 and by a method having the features of claim 11. Advantageous developments of the present invention are characterized in the subclaims.

According to the invention, in a dishwasher, which is suitable for carrying out a washing program with at least one rinsing process using rinsing liquor, with a program control, a rinsing container for holding the items to be cleaned and a system for circulating the rinsing liquor and a storage container for rinsing liquor for storage and reuse at a later time, at least a portion of the rinsing liquor present in the dishwasher is designed as a flexible foil pouch which is adaptable in its size to the liquid volume. This can be used advantageously any free space in a dishwasher for storing rinse liquor. There is thus no unnecessary loss of space due to the storage of rinsing water. Such a flexible film bag is inexpensive and easy to manufacture and easy to install or manufacture the dishwasher.

According to the invention, the dishwasher has a drain pump for pumping out the wash liquor from the dishwasher and a circulation pump for acting on the spray arms and the film bag is filled via a filter system in the pump sump and a first Spülflottenleitung of the circulation pump with filtered wash liquor. By using the circulation pump for filling the film bag, filtered rinsing liquor is introduced into the film bag due to the arrangement of the suction line to the circulation pump in the pump sump. As a result, less impurities in the Spülflottenleitungen and in the foil bag occur. In addition, less algae and bacteria growth occurs. The rinsing liquor can thus also be used over a longer period of time, e.g. several months, be stored in the film container.

Conveniently, the foil bag is preferably made of plastic or metal. Thus, in particular in the case of plastic, this is a very inexpensive material, so that the film bag according to the invention is particularly inexpensive to produce.

Preferably, the foil bag is designed to accommodate a plurality of rinsing liquors, preferably two rinsing liquors. With the film bag according to the invention can thus advantageously be stored for several part program steps within a wash program rinse.

In a further embodiment, the dishwasher has a drain pump for pumping out the wash liquor from the dishwasher and a circulation pump for acting on the spray arms and the film bag can be filled with wash liquor from the wash pump via a first wash liquor line. Thus, the drain pump can be used to fill the foil bag.

In a supplementary embodiment, a water diverter is provided which opens either the first rinsing liquor line with the shut-off valve open from the suds pump to the foil bag or a second rinsing liquor line from the suds pump to the sewer line, which is preferably closable via a shut-off valve. This can advantageously be controlled by a simple water switch, whether the drain pump promotes wash liquor in the sewer or in the foil bag.

Conveniently, the rinsing liquor from the foil bag for reintroducing rinsing liquor via a third Spülflottenleitung is passed into the Spülflottenkreislauf the dishwasher, which preferably leads from the foil bag in a sump in the lower region of the washing. Thus, the reintroduction of wash liquor from a third Spülflottenleitung can be performed independently of filling.

Conveniently, the first Spülflottenleitung and / or the second Spülflottenleitung and / or the third Spülflottenleitung each via a shut-off valve is closed. Thus, all Spülflottenleitungen can be advantageously separated and opened and closed independently, thus also filling and emptying of the film bag and the discharge of wash liquor in the sewer.

Conveniently, a first Spülflottenleitung is closed by a shut-off valve and provided a water diverter that releases either one, both or none of the spray arms for exposure to water. Thus, the filling of the film container can be controlled by the circulation pump.

Advantageously, the rinsing liquor from the foil bag for the reintroduction of rinsing liquor via a first Spülflottenleitung with open shut-off valve via the shut-off circulating pump in a pump sump can be conducted. This advantageously only a Spülflottenleitung for filling and emptying of the film bag is necessary.

Appropriately, the operation of the drain pump and / or circulation pump and the operation of the shut-off valves is controlled via the preferably electronic program control.

In a further embodiment, the film bag is arranged between an outer wall of the dishwasher and a side wall of a washing container of the dishwasher. This allows a space between the outer wall and side wall of the washing container can be used for the storage of rinsing water.

Advantageously, the foil bag is arranged between a top wall of the dishwasher and a top wall of the washing compartment. This also allows this space to be used for storing rinse liquor.

Expediently, the film bag has at least one opening for introducing or discharging rinsing liquor, which preferably discharges into the first rinsing liquor line.

In a further variant, the flexible film bag and / or the Spülflottenleitungen on the water-bearing inside at least partially antibacterial, z. B. with Agion coated. This restricts the growth of bacteria and algae, allowing the rinse liquor to be stored longer and preventing deposits and contamination. Thus, the reliability can be increased because z. As impurities do not hinder the operation of shut-off valves or pumps.

In another dishwashing machine according to the invention, which is suitable for carrying out a washing program with at least one washing operation using washing liquor, with a program control, a washing container for holding the items to be cleaned and a system for circulating the washing liquor and a storage container for washing liquor for storage and reuse at least later a portion of the washing liquor present in the dishwasher and the dishwasher has a drain pump for pumping out the wash liquor from the dishwasher and a circulating pump for acting on the spray arms, wherein the storage tank can be filled by the circulation pump with filtered wash liquor.

In a method according to the invention for operating a dishwasher, the rinsing liquor present in the dishwasher is at least partially removed from the rinsing liquor cycle of the dishwasher at the end or during a rinsing process and introduced into a flexible foil pouch which adapts in size to the liquid volume, and before or with the rinse Initially, a subsequent rinsing process is at least partially discharged from the flexible film bag and returned to the dishwashing cycle of the dishwasher. This can be used advantageously any free space in a dishwasher for storing rinse liquor. There is thus no unnecessary loss of space due to the storage of rinsing water. Such a flexible film bag is inexpensive and easy to manufacture and easy to install or manufacture the dishwasher. According to the invention, the rinsing liquor present in the dishwasher is at least partially removed via the circulating pump from the pump sump via the filter system of the dishwasher present there and introduced into the foil bag in a filtered manner. By using the circulation pump for filling the film bag, filtered rinsing liquor is introduced into the film bag due to the arrangement of the suction line to the circulation pump in the pump sump. As a result, less impurities in the Spülflottenleitungen and in the foil bag occur and a lower algae and bacterial growth is the result. The rinsing liquor can thus also be used over a longer period of time, e.g. several months, stored in the film container.

In a further variant, in a method for operating a dishwasher, the rinse liquor present in the dishwasher is removed at the end or during a partial program step rinsing a rinse program, at least partially taken from the Spülflottenkreislauf the dishwasher and introduced into the flexible foil bag and before or with the beginning of a Vorpülgangs a subsequent washing program at least partially discharged from the flexible film bag and the rinse liquor cycle of the dishwasher is fed back. Thus, particularly clean rinsing fluid is temporarily stored in the foil bag and in a partial program step Pre-rinse used in which low levels of impurities in the wash liquor are irrelevant.

Conveniently, the rinsing liquor from the foil bag before or with the beginning of a partial program step intermediate rinses in the Spülflotteskreislauf the dishwasher is fed back.

Expediently, the rinsing liquor fed back from the flexible foil bag into the rinsing cycle of the dishwasher is used exclusively for cleaning the rinsing container of the dishwasher.

In a further advantageous method for operating a dishwasher, the rinsing solution present in the dishwasher is at least partially removed from the rinsing liquor cycle of the dishwasher at the end or during a rinsing process and introduced into a storage container and at least partially discharged from the storage container before or at the beginning of a subsequent rinsing process and the Spülflottenkreislauf the dishwasher supplied again, wherein the storage container is filled by the circulation pump with filtered rinsing liquor.

Figur 1

eine perspektivische Darstellung einer erfindungsgemäßen Geschirrspül- maschine einer Ausführungsform der vorliegenden Erfindung,

Figur 2

eine perspektivische Darstellung einer erfindungsgemäßen Geschirrspül- maschine einer weiteren bevorzugten Ausführungsform der vorliegenden Erfindung,

Figur 3

ein schematisches Diagramm zur Darstellung des erfindungsgemäßen Ver- fahrens in einer ersten Ausführungsform der vorliegenden Erfindung zum Betrieb einer erfindungsgemäßen Geschirrspülmaschine und

Figur 4

ein schematisches Diagramm zur Darstellung des erfindungsgemäßen Ver- fahrens in einer zweiten bevorzugten Ausführungsform der vorliegenden Erfindung zum Betrieb einer erfindungsgemäßen Geschirrspülmaschine.

In the following, the present invention will be explained in more detail with reference to preferred embodiments with reference to the accompanying drawings. Show it:

FIG. 1

1 is a perspective view of a dishwasher according to the invention of an embodiment of the present invention,

FIG. 2

1 is a perspective view of a dishwashing machine according to the invention of a further preferred embodiment of the present invention,

FIG. 3

a schematic diagram for illustrating the method according to the invention in a first embodiment of the present invention for operating a dishwasher according to the invention and

FIG. 4

a schematic diagram for illustrating the method according to the invention in a second preferred embodiment of the present invention for operating a dishwasher according to the invention.

The in the FIG. 1 illustrated dishwashing machine 9 according to the invention comprises a washing container 11, in which two baskets 12 for receiving the items to be cleaned can be inserted like a drawer. The dishwasher 9 has on its front side a folding door 13 which can be opened to load the baskets 12 in a horizontal position. In the operating state, the baskets 12 are inserted into the washing container 11 and the folding door 13 is closed. In the illustrated embodiment of the dishwasher 9 according to the invention, a storage container 17 for washing liquor is accommodated between an outer wall (not shown) of the dishwasher 9 and a side wall 14 of the washing container 11, preferably attached to the side wall 14 of the washing container 11.

With the in FIG. 1 In a first step, the dishwashing liquor present in the dishwasher 9 during an arbitrary partial program step of a washing program of a washing process is at least partially taken from the dishwashing liquor cycle of the dishwashing machine 9 and introduced into the dishwashing machine 9 according to the present invention flexible film bag 17 is introduced and in a second step, the rinsing liquor stored in the film bag 17 in a subsequent rinsing before or at the beginning of any part program step of the washing program of the following rinsing process at least partially discharged from the film bag 17 and the rinse liquor cycle of the dishwasher 9 is fed again. The foil bag 17 is between the outer wall or another limiting device, for. As a grid (not shown), and a side wall 14 of the washing container 11 is clamped so that the flexible film bag 17 optimally adjusts the space between the outer wall or other limiting means and the side wall of the washing container 11, that is fully utilized.

The filling and emptying of the film bag 17 is carried out in each case via at least one opening 15 in the film bag 17. In order to ensure complete filling and emptying of the film bag 17, the opening 15 for discharging or discharging rinsing liquor provided in the lower region of the film bag 17. In this way, any scavenging residues entrained in the rinsing liquor, which can settle in the foil pouch 17 during the storage of the rinsing liquor, are transported away from the foil pouch 17 by discharging the rinsing liquor. The filling and possibly the emptying of the wash liquor into or out of the film bag 17 is accomplished via a pump, wherein preferably the pumping capacity of the circulation pump (not shown) or drain pump (not shown) of the dishwasher 9 is utilized.

In the Fig. 2 shown dishwashing machine 9 with a flap door 13 has a foil bag 17 as a memory for the rinsing liquor. The film bag 17 rests against the ceiling wall 18 of the washing container 11, is thus located in the free space (not shown) between the top wall 16 of the dishwasher 9 and the top wall 18 of the washing container 11. The film bag 17 generally has holders integrated into the film bag 17 , with the aid of the foil bag 17 can be attached to the dishwasher very easy during assembly (not shown). The foil bag 17 has an opening 15. It is particularly advantageous in the use of a foil bag 17 that this is very inexpensive to manufacture and on the other hand can adapt to the spatial conditions due to its flexible properties. The adaptability of the film bag 17 according to the invention to the volume of the stored wash liquor and to the spatial conditions preferably results from the mobility of the film and / or from the extensibility of the film. The available space can thus be used optimally. Furthermore, no venting is necessary because the flexible film bag 17 adapts to the changing volume of rinsing liquor. The foil bag 17 can accommodate a plurality of rinsing liquors, preferably two rinsing liquors. The foil pouch can be arranged at any other arbitrary point in the dishwasher with a free space, eg below the rinsing container 11 or at a rear wall of the rinsing container 11. The shape of the free space is also arbitrary, the foil pouch 17 only has to have a correspondingly adapted form.

FIG. 3 shows a schematic diagram for illustrating the method in a first embodiment of the present invention for operating a dishwasher according to the invention. In this embodiment of the method according to the invention, the suds pump is used to fill the foil bag 17 with rinsing liquor. The filling of the film bag 17 via a first Spülflottenleitung 1 of the drain pump to the film bag 17, wherein the drain pump, the wash liquor from the pump sump at the bottom of the washing container 11 refers.

A second Spülflottenleitung 2 in Fig. 3 leads from the drain pump to a sewer line, can be transported through the wash liquor from the dishwasher 9. The sewer line has a check valve 5 to prevent backflow of the spent wash liquor from the sewer line into the dishwasher 9. In order to better control the flow paths of the wash liquor through the Spülflottenleitungen 1, 2, 3, a shut-off valve 6, 7, 8 are provided in the Spülflottenleitungen 1, 2, 3, which open the respective Spülflottenleitung 1, 2, 3 if necessary or shut down. The shut-off valve 7 in the first Spülflottenleitung 1 between the drain pump and the film bag 17 is used in particular to prevent unwanted backflow of the rinsing liquor from the filled foil bag 17 via the drain pump back into the pump sump. When using a feed pipe, which ends in the upper region of the storage container, the shut-off valve 7 is not required (not shown). The emptying of the film bag 17 in the washing container 11 or in the sewer line 5 is generally carried out by gravity by means of appropriate control by at least one shut-off valve or a water diverter. The shut-off valve can also be integrated with the instantaneous water heater.

However, the control of the flow paths of the rinsing liquor can also be carried out by a water diverter 4, which opens either the first rinsing liquor line 1 from the suds pump to the film bag 17 or the second rinsing liquor line 2 from the drain pump to the sewer. In this way, during operation of the suds pump, either the foil bag 17 is filled with rinsing liquor via the first rinsing liquor line 1 or rinsing liquor is conveyed via the second rinsing liquor line 2 out of the dishwasher 9 into the sewer line.

The reintroduction of the rinsing liquor from the foil bag 17 into the rinsing liquor cycle of the dishwasher 9 takes place via a third rinsing liquor line 3, which leads from the foil pouch 17 to the pump sump in the lower region of the rinsing container 11. In the pump sump the rinsing liquor is transported by a circulation pump back into the Spülflottenkreislauf with spray arms. The operation of the drain pump, the circulation pump and the operation the water switch 4 and the shut-off valves 6, 7, 8 is coordinated and controlled by an electronic program control (not shown).

This in Fig. 3 illustrated schematic diagram for illustrating the method can also be modified so that the film bag 17 only one opening and thus a Spülflottenleitung is attached, in which the first Spülflottenleitung 1 and the second Spülflottenleitung 3 are combined to form a Spülflottenleitung. At the end of this common Spülflottenleitung then a diversion to the shut-off valves 7, 8 is required (not shown). Furthermore, the filling and emptying of the film bag 17 with any other suitable device or any other method is possible.

FIG. 4 shows a schematic diagram illustrating the method in a second preferred embodiment of the present invention for operating a dishwasher according to the invention. In this embodiment of the method according to the invention, the circulating pump is used to fill the film bag 17 with rinsing liquor. The filling of the film bag 17 is carried out via a first Spülflottenleitung 1 with open shut-off valve 7 from the circulation pump to the film bag 17, wherein the circulation pump refers to the wash liquor from the pump sump at the bottom of the washing compartment 11. When the shut-off valve 7 is closed, the rinsing liquor is conducted via the water distributor 4 into the spray arms. The flow resistance of the spray arms with open shut-off valve 7 is sufficient that the film bag 17 is filled. For this reason, in general, no additional shut-off valve (not shown) immediately in front of the water diverter 4 or closing of the water diverter 4 is required to fill the film bag 17.

As a result, filtered rinsing fluid is pumped into the film bag 17 in a particularly advantageous manner. The scavenging liquor sucked by the circulating pump in the pump sump is controlled by a filter system normally arranged in the pump sump, generally consisting of several filters, e.g. As a coarse and fine filter, filtered because the intake pipe of the circulation pump is arranged differently in the pump sump than the intake pipe of the drain pump. As a result, the residence time of the rinsing liquor in the film bag 17 can be increased and there are no or only very small deposits in the film bag 17 and / or in the rinsing liquor line 1. This can blockages by Ablagerun conditions in the Spülflottenleitungen 1 and / or in the shut-off valve 7 can be avoided. Furthermore, the growth of bacteria, germs and algae is significantly reduced because these organisms are deprived of food. The emptying of the film bag 17 in the washing container 11 or in the sewer line 5 is generally carried out by gravity by opening the shut-off valve 7. When the shut-off valve 7 is open, the rinsing liquor runs through the rinsing liquid line 1 through the shut-off circulation pump by gravity preferably in the pump sump.

The operation of the drain pump, the circulation pump and the operation of the water switch 4 and the shut-off valve 1 is coordinated and controlled by the electronic program control.

The rinsing solution stored in the foil bag 17 can be used in addition to the preferential use for a pre-rinsing a subsequent cleaning program for a Zwischenschluck (cleaning the sieve by brief alternate operation of the lye and circulation pump).

The foil bag 17 and / or the Spülflottenleitungen 1, 2, 3 may be on the water-bearing inner walls antibacterial, z. B. with Agion, coated. As a result, significantly fewer bacteria or germs settle on the inner walls of the parts 1, 2, 3, 6, 7, 8, 17. It can thereby be increased in the film bag 17, the service life of the wash liquor and blockages of Spülflottenleitungen 1, 2, 3 by deposits can be avoided.

List of reference numbers

1

Flushing line between the pump and the storage tank

2

Flushing liquor pipe to the sewer

3

Flushing line between foil bag and the pump sump

4

water points

5

Non-return valve in the sewer

6

Shut-off valve in the rinsing fluid line 2

7

Shut-off valve in the rinsing fluid line 1

8th

Shut-off valve in the rinsing fluid line 3

9

dishwasher

11

rinse tank

12

baskets

13

Flap door of the dishwasher 9

14

Side wall of the washing container 11

15

Opening in the storage container 10th

16

Ceiling wall of the dishwasher 9

17

foil pouch

18

Ceiling wall of the washing container 11

Claims (13)

1. Dishwasher suitable for executing a rinsing program with at least one rinsing process using rinsing solution, with a program control, a rinsing container (11) for reception of the rinsing stock to be cleaned and a system for circulating the rinsing solution and a storage container (17) for rinsing solution for storage and reuse at a later point in time of at least a part of the rinsing solution present in the dishwasher (9), the dishwasher (9) comprising a solution pump for pumping the rinsing solution out of the dishwasher (9) and a circulating pump for loading spray arms, characterised in that the storage container is constructed as a flexible film bag (17) adaptable in its size to the liquid volume, and wherein the film bag (17) is fillable with filtered rinsing solution by the circulating pump by way of a filter system in a pump sump as well as by way of a first rinsing solution duct (1).
2. Dishwasher according to claim 1, wherein the film bag (17) is formed from plastics material or metal.
3. Dishwasher according to claim 1 or 2, wherein the film bag (17) is constructed so that it can receive several spray solutions, particularly two rinsing solutions.
4. Dishwasher according to any one of the preceding claims, wherein the first rinsing solution duct (1) is closable by a blocking valve (7) and a water diverting point (4) is provided, which frees one, both or none of the spray arms for loading with water.
5. Dishwasher according to claim 4, wherein the rinsing solution can be conducted from the film bag (17) for reintroduction of rinsing solution by way of the first rinsing solution duct (1), with opened blocking valve (7), via the switched off circulating pump into a pump sump.
6. Dishwasher according to any one of claims 1 to 5, wherein the operation of the solution pump and/or circulating pump and the actuation of the blocking valve (7) are controlled by way of the program control.
7. Dishwasher according to any one of the preceding claims, wherein the film bag (17) is arranged between an outer wall of the dishwasher (9) and a side wall (14) of a rinsing container (11) of the dishwasher (9).
8. Dishwasher according to any one of claims 1 to 6, wherein the film bag (17) is arranged between a top wall (16) of the dishwasher (9) and a top wall (18) of the rinsing container (11).
9. Dishwasher according to any one of the preceding claims, wherein the film bag (17) has at least one opening, which preferably opens into the first rinsing solution duct (1), for the conducting in and conducting out of rinsing solution.
10. Dishwasher according to any one of the preceding claims, wherein the film bag (17) and/or the rinsing solution ducts (1, 2, 3) are coated at the water-conducting inner side in at least partly anti-bacterial manner, particularly with Agion.
11. Method of operating a dishwasher, particularly with a device for storing rinsing solution according to any one of the preceding claims, wherein the rinsing solution present in the dishwasher (9) is removed at the end of or during a rinsing process at least in part from the rinsing solution circuit of the dishwasher (9) and conducted into a flexible film bag (17) adaptable in its size to the liquid volume, and prior to or at the beginning of a following rinsing process is conducted at least in part out of the flexible sheet bag (17) and fed back to the rinsing solution circuit of the dishwasher (9), and wherein the rinsing solution present in the dishwasher (9) is removed by way of the circulating pump at least in part from the pump sump via a filter system, which is present there, of the dishwasher (9) and conducted in filtered form into the film bag (17).
12. Method of operating a dishwasher according to claim 11, wherein the rinsing solution present in the dishwasher (9) is removed at the end of or during a part-program step of clear rinsing in a rinsing program at least in part from the rinsing solution circuit of the dishwasher (9) and conducted into the flexible film bag (17) and prior to or at the start of a part-program step of pre-rinsing in a following rinsing program is conducted at least in part out of the flexible film bag (17) and fed back to the rinsing solution circuit of the dishwasher (9).
13. Method according to claim 11, wherein the rinsing solution from the film bag (17) is fed prior to or at the beginning of a part-program step of intermediate rinsing back into the rinsing solution circuit of the dishwasher (9).

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