DE102009026879A1 - Dishwasher with appliance-side water inlet - Google Patents

Abstract

In a dishwasher, in particular domestic dishwasher (1), at its device-side water inlet device (131) is a connector (5), in particular Y-connector, with an inlet side hot water supply line section (7) for the supply of hot water from an external hot water supply (WH) and with a inlet side Kaltwasserzulaufleitungsabschnitt (9) attached to the inlet of cold water from an external cold water supply as a device-side provided equipment component.

Description

The The invention relates to a dishwasher, in particular Household dishwasher, with a device-side Water inlet means.

When household appliance DE 100 46 347 A1 an external water supply device is provided with a cold water valve and a hot water valve. Both the cold water valve and the hot water valve can be opened or closed by means of a control device as a function of operating conditions of the household appliance. The cold water valve and the hot water valve are each connected via a water supply hose to a downstream downstream branch, which is arranged outside the household appliance. The single output of the branch is connected via a further, external water supply hose with a housing-fixed water inlet of the dishwasher. In this way, the hot water required by the dishwasher can be taken from a hot water supply line whose water is heated by a household heating system.

The DE 100 57 263 mentions a hot water supply for a domestic appliance, which has solar panels for hot water.

Of the Invention is based on the object, a dishwasher, in particular to provide household dishwasher, the simplest possible way for an energy-efficient Operation is connectable.

These Task is in a dishwasher, in particular Household dishwasher, the aforementioned Art solved by the fact that on the device side Water inlet device a connector, in particular Y-connector, with an inlet side hot water supply line section for the supply of hot water from an external hot water supply and with an inlet side cold water supply line section for the supply of cold water from an external cold water supply as a device-side provided equipment component attachable is.

Thereby, that the water inlet device of the invention Dishwasher, in particular household dishwasher, device side with a connector, in particular Y-connector, can be equipped, in particular already factory-prepared is the connection of the dishwasher to a external hot water supply and to an external cold water supply facilitated or simplified for an operator. Because it is not necessary to use the connector as a loose, bulky component outside the dishwasher in the external space between the external hot water supply, the external cold water supply and the dishwasher to be installed by means of three long water connection hoses. Since the connector is located directly on the water inlet the dishwasher is attachable, can after outside, d. H. out of the case the dishwasher long herausgeführter Water supply hose between the water inlet device of the dishwasher and the connector omitted. The connector is therefore preferably as a device-side equipment component intended. In particular, it can be an installation component in the dishwasher or form an attachment to the dishwasher. By the device-side attachment of the connector can this mechanically safe, d. H. Reliable at the water inlet be connected. Impermissible stresses, in particular impermissible high tensile loads on the connector, as well as other Inadmissible damage to the connector are largely avoided in this way, which in contrast with a free, "overhead-down" suspension of the Connector at the water connections, in particular Taps of the external hot water supply and external Cold water supply can go along.

Especially advantageously satisfy two external water supply hoses for connecting the hot water supply line section of the connector to the external hot water supply and the cold water supply line section of the Connector to the external cold water supply, d. H. two connection procedures are sufficient, what the assembly simplified for an operator or a fitter. there In particular, unacceptably high tensile loads or other impermissibly large mechanical stresses this Wasserzulaufschläu surface and the water connections, in particular taps of external hot water supply and the external cold water supply to which the water supply hoses are coupled upstream, largely avoided, which, in contrast, in the case of a freely suspended Connector by its effective self-weight may occur.

Furthermore, the storage and the packaging of the dishwasher is simplified by eliminating the connector as loose, external extra component. In addition, a device-side attachment of the connector ensures a kind of standardization, in particular standardization of assembly or production, warehousing and packaging of such Ge trained dishwashers. The dishwasher according to the invention with the device-side mounted connector is prepared so that it can be connected to an external hot water supply alone, an external cold water supply alone, or both an external hot water supply and an external cold water supply, depending on the existing water connection conditions.

According to one expedient development of the invention is the Outlet of the connector by a substantially material-rigid, in particular rigidly formed output line section educated. The connector of the device side Water inlet device is preferably also material stiff, especially rigid. This is advantageous a stable, mechanically strong connection between the Connector and the connector of the device side Water inlet device available.

Of the Outlet line section and the connector can in particular by latching, screwing, jamming, Form or fit, traction, gluing, etc. ... or one Other connection technology with each other liquid-tight be connected. Possibly. can the output line piece of the connector and the fitting of the Water inlet device also in one piece or in one piece be connected to each other, d. H. form a single molding.

According to one further expedient development of the invention is the connection piece of the device-side water inlet device on the outer casing or inside the outer casing the dishwasher, the washing container, or in particular on or in the bottom assembly of the dishwasher, preferably stationary, preferably fixed to the housing, provided. Such a dishwasher allows an integrated, mechanically protected attachment of the Connector in the housing or other Wall part or external component of the dishwasher. Furthermore retains the dishwasher designed in this way their original, compact exterior dimensions even after installation or installation of the connector largely at.

According to one further expedient development of the invention are the hot water supply line section and / or the cold water supply line section, in particular factory, preferably closed by a plug. This makes the dishwasher with a universal connection option fitted. For example, is only an external cold water connection of the connector available, so the cold water inlet section opened, in particular its input-side plug, be removed and only this be connected to the cold water supply, closed during the hot water supply line section remains. Accordingly, the hot water supply pipe section becomes opened if only one external hot water connection is available. The cold water connection, however, remains closed. Is both an external hot water connection as well as an external cold water connection available, so it is convenient to the input side hot water supply line section and the input-side cold water supply pipe portion of the connection portion to open and the hot water supply line section the external hot water connection and the cold water supply line section to connect to the external cold water connection.

To another expedient development of Invention, it may be advantageous if the inlet side hot water supply line section and the upstream side cold water supply pipe portion of the connection portion essentially as rigid material, in particular largely rigid Connecting pieces are formed. This is the connection a water supply hose to the input-side cold water supply line section and a water supply hose to the input side hot water supply line section facilitates the connection piece.

Conveniently, is the inlet side hot water supply line section over a device-external supply line, in particular hose line to a hot water valve, in particular an aquastop valve, connectable, and / or the inlet-side cold water inlet section via a device-external supply line, in particular hose line, to a cold water valve, in particular an aquastop valve, connectable. Through the valves it is possible to control the inflow of hot water and / or to regulate cold water. These are in particular by a flow control device of the dishwasher in terms their flow rate controllable.

To a preferred embodiment of the invention the hot water valve on a connection piece of an external Hot water supply, which partially or completely in particular by a solar thermal system is fed, attachable, and that the cold water valve on a connection piece of an external Cold water supply attachable. This improves energy efficiency the dishwasher considerably, especially for solar thermal heated hot water no combustion fossil Energy source is required.

A low cost hot water supply tion can in addition to or in addition to a solar system in the home by a modern condensing boiler such. B. Pelletofen-, wood chips, or Holzscheitheizung, a combined heat and power plant, geothermal heat pump, air heat pump system, a district heating system or a local heating system, individually or in any combination, etc. ... are provided. In particular, z. B. linking a pellet stove with a solar thermal system be energetically advantageous.

Especially it is expedient to control at least one Rinse for cleaning items to wash a flow control device to be provided in the respective dishwasher. The Flow control device controls the hot water valve and the cold water valve in an advantageous manner such that in a first mode for at least one program step at least one wash program the Hot water valve for supplying hot water from the hot water supply apparently and the cold water valve is closed durable that in a second mode for at least one program step at least one rinsing program the cold water valve for Supply of cold water from the cold water supply openable and the hot water valve is kept closed, and / or that in a third mode for at least one program step at least one washing program for mixing hot water and cold water, the hot water valve for supplying hot water the hot water supply and additionally the cold water valve for the supply of cold water from the cold water supply openable is. By this automated control by means of the flow control device is the energy-efficient operation of the invention Dishwasher convenient for an operator and easy.

expedient If necessary, it may be if an operating device is provided which allows manual selection of the respective mode. This allows the user the autonomous, free decision, if and when water from the external hot water supply and / or Cold water supply via the connector the dishwasher is supplied.

alternative the selection of the respective operating mode by the flow control device yourself. So it can in particular over appropriate Sensors, in particular temperature sensors z. B. in the hot water supply line section and cold water supply pipe section of the connection section and / or the hot water valve and cold water valve conclusions about pull the given connection conditions.

Especially can be a data interface for receiving operating data of the external Hot water supply, which at least partially in particular by a solar thermal system is fed, be provided. The flow control device is expediently for automatic Selection of the respective operating mode based on the received operating data educated. In this way, the flow control device can autonomously recognize whether in particular a solar thermal system makes a contribution on hot water for carrying at least a program step of a dishwashing program to be started can deliver.

A Solar thermal system is a technical conversion system from solar energy into usable thermal energy. Ask Thermal solar systems usually have hot water in a temperature range from, for example, 40 ° C to 70 ° C ready, the one direct use of hot water for building heating but also makes possible as service water. Thermal solar systems usually include a variety of solar panels, which have an absorber surface by the electromagnetic Solar radiation is heated. From there, the heat can be a fluid to be transported to a heat exchanger, the the hot water is generated.

at favorable conditions can also be moderate Climate already with collector areas of a few square meters the hot water needs of a household are covered. The production costs for The heat energy gained is extremely low. However, in many places, for example in Central Europe, in the Winter months, in summer bad weather periods or at a high Hot water demand the performance of solar panels insufficient. Solar systems therefore have a conventional in many cases Additional heating on, for example, a gas or oil heating to even in such a situation enough hot water for To have available. However, must resort to the additional heating usually increase the production costs for the provided hot water.

The use of hot water from a domestic heating system, which is partially or completely fed in particular by a solar system, can lead to a saving of electrical energy, since in this case the energy consumption of an electric radiator of the dishwasher can be reduced or eliminated altogether. Against the background of generally increased operating costs of household heating systems, however, especially with the help of the flow control, to check and decide whether the additional costs incurred by the removal of hot water from a house-side hot water supply line for the operation of household heating system, esp solar thermal hot water system exceeds the saved costs for electricity of the electric heating device of the dishwasher or lie below.

The Dishwasher according to the invention allows in particular the efficient use of cost-effective, in particular by means of a solar system, generated hot water. To the sequence control device preferably has a first mode of operation on, in which at least one washing program can be called, which in a rinse use of hot water from the hot water supply, and wherein the flow control device a second mode, wherein the at least one wash program can be called, which in a rinse exclusively a use of cold water from the cold water supply provides. at the first operating mode is consequently a hot water operation, at least partially for a rinse Hot water, in particular from a solar thermal assisted, Hot water supply is used while it is at the second mode is a pure cold water operation, at for a rinse exclusively Cold water from the cold water supply is used.

The first operating mode allows efficient implementation of rinses when the cost savings due to the reduction of the internal heating demand of the dishwasher is greater than the additional costs the operation of the hot water supply, which by the removal arise from hot water. On the other hand allows the second mode efficient rinse cycles, if the cost savings due to the reduction of internal heating demand the dishwasher is lower than the additional Cost of operating the hot water supply, which by the removal arise from hot water.

there For example, it is possible to drain rinses to adapt to the power generated by the solar panels, without a change to the building Installation or at the connection of the dishwasher to the building side installation would be required. In particular, it is not required to be installed on the building side Taps or valves to open or close. Also, it is not necessary to connect the hoses Dishwasher with the building-side connections to connect or disconnect from it.

If the solar panels related to the other needs of the household provide a heat surplus, so this can Heat surplus to reduce internal energy demand the dishwasher used in a simple manner be that the first mode is selected. Put the solar panels, however, based on the heat demand the household is too little heat ready, so can by selection the second mode prevents the hot water supply Heat is extracted, which by heating with the usually more expensive additional heating would have to be compensated.

The when selecting the first operating mode callable washing programs are preferably special in terms of their timing to the use of hot water, especially from the thermal Solar system adapted. Likewise, when selecting the second mode Callable washing programs with regard to their temporal Especially adapted specifically to the use of cold water. In both cases, such a predetermined cleaning effect or drying effect can be achieved at high efficiency.

at the first mode and the second mode advantageously corresponding wash programs be provided, which is characterized by a substantially matching Cleaning effect and / or drying effect same. For example can corresponding normal rinse programs, corresponding intensive programs, corresponding grace programs or corresponding automatic programs may be provided. The corresponding ones Programs may alternatively or additionally be used as quick flush programs be designed.

According to one expedient development of the invention is at at least one washing program can be called up in the first operating mode, which at least one program step for rinsing Washware using hot water from the hot water supply provides.

Provided a program step by its very nature the use of water at high temperature, or at least desirable makes, can for this program step in the first mode Hot water can be taken from the external water supply. In such a program step for rinsing dishes it may in particular be a cleaning step and / or order a Klarspülschritt act, as there usually provided is to wash the dishes with relatively hot water too apply. The intake of hot water can be before or during the respective program step.

A recording of hot water for such a program step is particularly energy and more cost-effective than a recording of cold water when the respective hot water supply, in particular the solar thermal system, ge provides enough heat energy. The reason for the increased cost efficiency is that when receiving hot water, the internal electrical energy consumption of the dishwasher for a rinse by a reduced electrical energy consumption for heating the absorbed water drops significantly. This can lead to a significant reduction in household electricity costs. In this way, an increase in efficiency compared to a dishwasher can be achieved, which is provided exclusively for connection to a cold water supply.

According to one preferred embodiment of the invention is according to a third mode provided that in addition to the hot water supply from the external Hot water supply according to the first mode at least a rinse program can be called, which in a rinse additionally a use of cold water from the cold water supply provides. In this embodiment, it is in the third mode to a combined hot and cold water operation, in which hot water is mixed with cold water. By the least partial use of cold water from the external cold water supply is it possible to program steps in which the use hot water with too high temperature from the external hot water supply would not bring any advantages or even disadvantages instead of using mixed water efficiently. Again, the additional intake of cold water in addition to the hot water before or during the the respective program step.

Different as in a dishwasher, which z. B. exclusively intended for connection to a hot water supply is so spültechnologischen disadvantages can be avoided are caused by a forced use of hot water in specific program steps could occur. In addition, can by the partial absorption of cold water from the external cold water supply the amount of hot water, which is the external hot water supply for a rinse to achieve a required Total water quantity must be removed, reduced without As a result, substantial disadvantages with respect to the cleaning effect and / or the drying effect would have to be accepted. In this way, it can be ensured in particular in the third operating mode be that the amount of the solar system when carrying out a rinse extracted hot water expediently is limited to a minimum. This allows the third mode are also usefully selected when the solar panels provide comparatively little heat energy.

All in all For example, in the third operating mode, in particular wash programs to control a rinse possible, which the execution of individual program steps using from hot water from the external hot water supply, the implementation other program steps using cold water from the external cold water supply, and the implementation of other program steps using cold water from the external cold water supply and simultaneous use of hot water from the external hot water supply provide. In this way can be compared to both known Dishwashers, which - especially common in Europe - exclusively for Connecting to a cold water supply are provided as well as compared to known dishwashers, which - as usual especially in North America - exclusively intended for connection to a hot water supply a significant increase in efficiency can be achieved.

To A preferred embodiment of the invention is an operating device is provided, which allows a manual selection of the mode. Such an operating device allows the operator to decide whether hot water may be used, or whether only cold water should be absorbed. at The operating device may be, for example, an additional Act button, which on a control panel of the dishwasher is arranged. But it is also possible to switch the Operating mode to provide operating devices, which already for other operator interventions are provided. Conceivable are multifunction buttons, Rotary knobs, touch screens, alphanumeric input units and more.

According to one expedient development of the invention has the dishwasher on a data interface, the for receiving operating data of the hot water supply system, in particular solar thermal system, is provided, wherein the flow control device for automatically selecting the operating mode based on received operating data is trained. In such operating data, it may, for example for information regarding the performance of solar panels or for information regarding the in a heat storage act of a solar system stored amount of heat. On This way will automatically select the more efficient ones Operating mode possible.

According to a preferred embodiment of the invention, it is provided that the hot water supply comprises a hot water valve and the cold water inlet comprises a cold water valve, wherein the hot water valve and the cold water valve independently by the flow control device are bar. This makes it possible in a simple manner to carry out the intended by the washing programs of the two modes recording hot water from the hot water supply and / or cold water from the cold water supply. In particular, can be dispensed with an external device for controlling the water absorption.

To an expedient development of the invention is provided that the hot water valve at an upstream End of a hot water hose is arranged and designed so that it on a connection piece of the external hot water supply is attachable, and / or that the cold water valve at an upstream End of a cold water hose is arranged and designed that it can be attached to a connector of the external cold water supply is. The hot water valve and / or the cold water valve can For this purpose, have connection thread, which with threads correspond to common household faucets. such Valves can be used in particular as so-called Aquastop valves be educated.

The Arrangement of the hot water valve and / or the cold water valve on upstream end of the water inlet device the advantage on that from the dishwasher too practically no leakage water can escape in case of damage, as long as the valves are closed. When the valves run like this are that they close when they are not driven, is leakage of water leakage from a switched off dishwasher virtually prevented in all cases. To also have an exit of leakage water from a switched-on dishwasher To prevent the flow control device, a leak water sensor be assigned to detect leakage water, so that the flow control device when leakage water occurs during operation of the Dishwasher can close the valves.

other Further developments of the invention are in the subclaims played.

The Invention and its developments are described below with reference to Drawings explained in more detail. Show it:

1 a schematic spatial representation of an embodiment of a dishwasher according to the invention;

2 a schematic block diagram of the dishwasher according to the invention the 1 ;

3 schematically a wash program a first mode of e dishwasher the 1 , and

4 schematically a wash program a second mode of e dishwasher the 1 ,

In The following figures are corresponding parts with each other Provided with reference numerals. Only those components of a dishwasher are included provided with reference numerals and explains which for the understanding of the invention are required. It understands itself, that the dishwasher invention further Parts and assemblies may include.

1 shows a schematic spatial representation of an advantageous embodiment of a dishwasher according to the invention 1 , This has a washing container 2 up, through a door 3 is closable, so that a rinsing cell for washing dishes arises. The washing container 2 is inside a case 4 the dishwasher 1 arranged, which may have standard dimensions. For example, the housing 4 have a width of 45 cm or 60 cm, which is an integration of the dishwasher 1 in a standard designed kitchenette with a suitable Einbaunische allows. For example, for fully integrated built-in appliances, this outer housing may possibly be partially or completely omitted. For example, the side walls of the housing may be omitted.

In the dishwasher according to the 1 is the items to be washed, in particular to be washed dishes, in the washing 2 introduced and there in a so-called rinsing process, which is also called rinse, cleaned with the aid of water and then dried. The aim is to perform a rinse so that a predefined cleaning result and a predefined drying result are achieved as efficiently as possible. In particular, a high overall efficiency is required, which results from the cleaning efficiency and the drying efficiency. The cleaning efficiency corresponds in particular to the ratio of the cleaning result achieved by means of a rinse cycle and the effort required for this purpose, wherein the effort can comprise one or more dimensions, for example the energy requirement, the water requirement and / or the time requirement. Furthermore, the drying efficiency corresponds in particular to the ratio of the drying result achieved by means of a rinse cycle and the effort required for this purpose, wherein the effort here can also include one or more dimensions, for example the energy requirement and / or the time required.

In the present dishwasher 1 is a flow control device 19 provided in the one or more washing programs for controlling a specific wash cycle for cleaning items to be stored. The sequence control device is designed such that it automatically controls a rinse cycle according to a rinse program usually selected by an operator. The water required for carrying out rinsing can via a device side, in particular rear side water inlet device 131 be received, which can absorb water, for example, from a building side installed cold water supply and / or external hot water supply.

A wash program preferably has several successive program steps for the treatment of the items to be washed, wherein the water is provided in the water-conducting program steps depending on the respective program step with cleaning, rinsing, and / or additives and brought to a favorable temperature for the respective program step. To be able to provide the intended for rinsing water with the intended cleaning and / or additives, has the dishwasher 1 usually an automatic metering device on. This is in the 1 have been omitted for the sake of clarity of drawing.

One typical washing program includes for cleaning the dishes in this chronological order a pre-rinse step, a cleaning step, an intermediate rinsing step and a rinse step in which the items to be washed respectively is charged with water. However, it can also be provided rinse programs in which one or more of these program steps are hidden are. Also, rinse programs are possible in which one or more of these program steps multiple or one or more Additional steps are passed through. Furthermore, includes a typical Rinse a subsequent drying step for drying the cleaned items.

One Pre-rinsing step serves mainly the removal of coarse dirt from the dishes. The purpose a subsequent cleaning step is soiling completely removed from the dishes. One possibly subsequently performed intermediate rinsing step can in particular serve the removal of detergent residues, which adhere to the dishes. A subsequent rinse step is especially to avoid stains on the dishes, which by dissolved substances in the water, such as Salt and / or lime, could arise, provided. For this the water is rinsed with rinse aid during the rinse step added.

If the dishwasher with a so-called self-drying works, there is another task of the rinse step in preparing the subsequent drying step. there is the dishes during the rinse step heated to a high temperature. In the following Drying step evaporate on hot dishes adhering drops of water and hit the inside of the Spülbehälters due to the prevailing lower Temperature as liquid droplets from.

Furthermore, the dishwasher can 1 optionally have a conventional electric heater to bring the water intended for rinsing to the required temperature for the respective heated water demanding program step, in particular for the cleaning and rinsing step. This heater is in the 1 for the sake of simplicity also omitted.

On the back of the dishwasher 1 is the schematically illustrated water inlet device 131 with her connection piece 12 arranged. The connection piece 12 the device-side water inlet device 131 can be on the outer casing or inside the outer casing 4 the dishwasher 1 , preferably on the washing container 2 be provided. It is particularly useful, the connector 12 on or in the floor assembly BG of the dishwasher 1 , in particular fixed, provide. This advantageous arrangement of the water inlet device is in the 1 additionally marked with dot-dash lines and with 132 designated.

At this device-side water inlet device 131 respectively. 132 is a connector 5 , in particular Y-shaped connecting piece, with an inlet-side hot water supply line section 7 for the supply of hot water from an external hot water supply WH and with an inlet-side cold water supply line section 9 for the supply of cold water from an external cold water supply KH attached as a device side provided equipment component. Here is the connector 12 the water inlet device 131 respectively. 132 on the device side with the Y-connector 5 preferably already factory fitted and thus prepared the dishwasher with a bithermic water connection. As a result, the connection of the dishwasher to an external hot water supply and to an external cold water supply for an operator is facilitated or simplified. Because it is not necessary to obstruct the Y-connector as a loose, bulky component outside the dishwasher in the external space between the external hot water supply, the external cold water supply and the dishwasher by means of three long water hoses. Since the off corridor 11 of the Y-connector 5 directly on the connection piece 12 the water inlet device 131 respectively. 132 the dishwasher is attachable, in particular can be coupled, an outwardly guided, ie from the housing 4 the dishwasher 1 long led out water supply hose 111 between the water intake device 131 the dishwasher 1 and the Y-connector 5 omitted. The absence or absence of such outwardly guided water supply hose 111 is in the 1 symbolized by a cross. The Y-connector 5 So is preferably provided as a device-side trim component, ie it is in particular a built-in component or an attachment in or on at least one part such. B. the rear wall or more preferably the bottom assembly BG of the dishwasher. In particular, it extends only within the predetermined length, width, depth, height dimensions of the dishwasher. Preferably, the Y-connector 5 within a recess or recess on the rear wall side of the base assembly BG to the connector provided there 12 the water inlet device 132 directly, ie without external, led out to the outside line hose, be coupled. Such equipped dishwasher allows a particularly integrated, mechanically protected attachment of the Y-connector. Through the device-side attachment of the Y-connector 5 This can mechanically safe, ie reliable at the water inlet device 131 respectively. 132 be connected. Unacceptable stresses, in particular tensile loads on the Y-connector, as well as other unacceptably large damage to the Y-connector are largely avoided in this way, in contrast, with a free "overhead-down" suspension of the Y-connector to the water connections, especially faucets of the external hot water supply WH and external cold water supply KH - like these in the 1 represented and crossed out with a cross - can go along.

In particular, suffice in the device-side attachment of the Y-connector 5 advantageously two external water supply hoses 71 . 91 for connection of the input side hot water supply line section 7 of the Y-connector 5 to the external hot water supply WH and the input-side cold water supply line section 9 of the Y-connector 5 to the external cold water supply KH, ie two connection operations are sufficient, which simplifies the installation for an operator or a fitter. In particular, unacceptable tensile loads or other impermissible mechanical stresses of water supply hoses and the water connections, especially taps of the external hot water supply WH and the external cold water supply KH, where the water inlet hoses 71 . 91 upstream side are largely avoided, which in contrast can occur in the case of a freely suspended Y-connector by its own weight becoming effective.

Further is by the elimination of the Y-connector as a loose, external, freely suspended extra component the storage as well as the packaging of the dishwasher simplified. In addition, the device-side attachment ensures the Y-connector for a kind of unification, in particular standardization of the assembly or production of such trained dishwashers. The inventive Dishwasher with the device attached Y-connector is prepared in this way so depending on the existing water connection conditions an external hot water supply alone, an external cold water supply alone, or both to an external hot water supply and simultaneously can be connected to an external cold water supply.

Conveniently, the output 11 of the Y-connector 5 formed by a substantially rigid material, in particular rigidly formed output line section. The connection piece 12 the device-side water inlet device 131 respectively. 132 is preferably also material stiff, in particular rigid. As a result, a stable, mechanically fixed connection connection between the Y-connector and the connector of the device-side water inlet device can be provided in an advantageous manner. The output line section and the connection piece can in particular be connected to one another in a fluid-tight manner by latching, screwing, jamming, form fit or snug fit, adhesion, gluing, etc., or any other connection technique. Possibly. For example, the outlet fitting of the Y-connector and the fitting of the water inlet means may also be integrally connected, ie form a single molding.

Advantageously, the hot water supply line section 7 and / or the cold water supply line section 9 of the Y-connector 5 factory, preferably each closed by a plug. As a result, the dishwasher is equipped with a universal connection option. If, for example, only an external cold water connection KH is available, then the cold water inlet section becomes 9 of the Y-connector 5 opened, in particular its input-side plug, removed and only this Kaltwasserzulaufab cut 9 connected to the cold water supply KH, while the hot water supply line section 7 remains closed. Accordingly, the hot water supply pipe section becomes 7 opened, if only one external hot water connection WH is present. The cold water connection, however, remains closed. If both an external hot water connection and an external cold water connection available, it is expedient, as here in the embodiment, the input side hot water supply line section 7 and the input side cold water supply line section 9 of the Y connection section 5 to open and the hot water supply line section 5 to the external hot water connection WH and the cold water supply line section 9 to be connected to the external cold water connection KH.

Here in the embodiment, the inlet side hot water supply line section 7 and the inlet side cold water supply line section 9 of the Y-connection portion also substantially formed as a material-rigid, in particular substantially rigid fittings. This is the connection of a device external, preferably flexible, water supply hose 71 between the water connection, in particular faucet of the hot water supply WH and the input side hot water supply line section 7 and the connection of a device external, preferably flexible, water supply hose 91 between the water connection, in particular the tap of the cold water supply KH and the input side cold water supply line section 9 facilitated.

Here in the embodiment, the inlet side hot water supply line section 7 on the input side via the device-external supply line 71 , In particular hose, to an upstream, controllable hot water valve 6 connected, and the inlet-side cold water inlet section 9 is on the input side via the device-external supply line 91 , in particular hose, to an upstream, controllable cold water valve 8th connected. The hot water valve 6 and cold water valve 8th are basically identical. For example, both valves 6 . 8th be designed as a solenoid valve. The inlet sides of the valves 6 . 8th are each designed so that they can be attached to the fittings, for example to the taps of the hot water supply WH and the cold water supply KH of a household water supply system. The connection can be made in each case by means of a screw connection, a snap connection or the like. Through these valves 6 . 8th makes it possible to regulate the inflow of hot water and / or cold water. These are in particular by the flow control device 19 the dishwasher can be controlled with regard to their flow rate. Such valves 6 . 8th are especially designed as Aquastop valves. Advantageously, these are closed when they are not driven, so that the dishwasher 1 in the off state of the hot water and the cold water supply is disconnected. In this way, in the event of a fault leakage of water leakage from the switched-off dishwasher 1 be avoided.

The input side of the hot water valve 6 So is at a fitting, in particular faucet, the external hot water supply WH, which is partially or completely fed in particular by a solar thermal system attached, and the input side of the cold water valve 8th is attached to a connection piece, in particular a tap, of the external cold water supply KH. This considerably improves the energy efficiency of the dishwashing machine, since no combustion of fossil energy carriers is necessary for hot water heated in particular by solar thermal means.

In the embodiment of 1 are thus the input side of the hot water valve 6 to a hot water tap and the inlet side of the cold water valve 8th connected to a cold water tap. The outlet side of the hot water valve 6 is with the hot water hose 71 and the outlet side of the cold water valve 8th with the cold water hose 91 connected, with the downstream ends of the hot water hose 7 and the cold water hose 9 to the input sides of the hot water supply line section 7 and the cold water supply line section 9 of the device side mounted Y-connector 5 guided and connected to these liquid-tight. By means of the device-side Y-connector 5 Consequently, it is possible to heat water from an external hot water supply WH and / or cold water from an external cold water supply KH individually controlled in the interior of the dishwasher 1 to lead.

The hot water hose 71 and the cold water hose 91 can be designed as safety hoses with an inner water-carrying pressure hose and an outer sheath hose, wherein between the pressure hose and sheath each a leak water channel for discharging any leak water may be provided. This can be the Y-connector 5 be formed so that the leakage water channels of the hot water hose 71 and the cold water hose 91 connected to each other, so that leakage water, which during the operation of the dishwasher 1 occurs via a leak water channel in the device side Y-connector 5 and in the housing-fixed connection piece 12 into the interior of the Ge dishwashing machine 1 can be directed. Here it can be detected by a leak water sensor, not shown, so that appropriate measures, such as closing the hot water valve 6 and cold water valve 8th , can be initiated.

Downstream of the housing-fixed connector 12 is a free flow route 13 in the dishwasher 1 provided (see 2 ). In the free flow path 13 it is a so-called pipe interruption, which serves to suck back of water from the dishwasher 1 to prevent, if in the external water supply by dynamic processes a negative pressure arises. This prevents in particular that already used water, which may be mixed with dirt, cleaning agents and / or cleaning aids, salt or other additives, gets back into the building water supply.

The dishwasher 1 continues in 1 not shown on components, which allow hot water and / or cold water from the outlet of the free flow path 13 in the washing container 2 to lead.

In a lower area of the washing container 2 is a sump 16 provided, in which expediently a circulating pump for circulating water in the washing 2 is provided during a rinse cycle. In this case, the circulation pump can be a heating device for heating the in the washing 2 located water, for example, a water heater, have. Likewise, in the sump 16 a pump for pumping out water, for example, at the end of a rinse cycle, be provided. However, the various pumping functions can also be perceived by a single pump in conjunction with switchable valves. The sump 16 is usually with a wastewater connection piece 17 connected by means not shown so that water from the washing 2 via one to the wastewater connection piece 17 connected sewage hose 18 in a building side installed wastewater A, for example, a sewer pipe A, can be pumped.

In 1 is the hot water supply 6 . 7 the dishwasher 1 intended to the external hot water supply WH, which is partially or completely supplied with hot water in particular by a solar thermal system TSA connected. The thermal solar system TSA comprises a large number of solar collectors SOK, of which only one is shown for reasons of space. The solar collectors SOK each have an absorber surface, not shown, which can be heated by the electromagnetic solar radiation. From there, the heat can be transported by means of a fluid to a heat exchanger WT, which generates the hot water for the hot water supply WH.

Around in situations where those provided by the solar panels Heat energy is insufficient, enough hot water to provide the solar system has a conventional Additional heating ZH on, for example, a gas or oil heating, which also provide heat to the heat exchanger WT can.

The dishwasher 1 also has the flow control device 19 for controlling the course of a wash cycle after a wash program. In this case, the sequence control device has a first operating mode, in which one or more rinsing programs can be called, which at least partially envisage a use of hot water from the hot water supply WH during a rinse cycle. Furthermore, the flow control device has a second operating mode, in which one or more washing programs can be called, which only provide for a rinse cycle use of cold water from the cold water supply KH.

The flow control device 19 is with an operating device 20 connected, which on a control panel of the door 3 of the washing container 2 is arranged. The flow control device 19 itself is inside the door 3 arranged. Both could, however, also elsewhere on the dishwasher 1 be arranged. So can the flow control device 19 be provided in particular in the bottom assembly BG below the washing compartment. The operating device makes it possible to manually set the desired operating mode for the operator and to manually select an individual program available in the selected operating mode. Optionally has the dishwasher 1 a data interface 20a on, which is intended to receive operating data of the hot water supply WH. For this purpose, it can be connected via a data line, for example with a controller of the solar thermal system TSA. Such a data line is in the 2 denoted by DL1. The data interface 20a is still with the flow control device 19 connected via a data line DL2, wherein the flow control device 19 is designed for automatic selection of the mode based on the received operating data. For example, it is possible that the dishwasher 1 automatically switches to the second mode when the power of the solar panels SOK falls below a certain limit. It is also possible to automatically control the operating mode as a function of the temperature in the heat exchanger WT. It can also be provided that is automatically changed to the second mode when the auxiliary heater ZH is turned on. The control of valves 6 . 8th for dosing the amounts of incoming hot water and / or cold water according to the respective operating mode and / or generally expressed states of the hot water supply, in particular solar thermal system TSA is via corresponding signal lines DL4, DL5 from the flow control device 19 carried out from.

2 shows a block diagram of the dishwasher of 1 , The hot water valve 6 and the cold water valve 8th are each so via the data lines DL5, DL6 with the flow control device 19 connected, that both are individually controlled. This makes it possible for the washing container 2 the dishwasher 1 via the device-side mounted Y-connector 5 , the device's internal free-flow range 13 and an enema 21 specifically to feed with hot water and / or cold water.

In the sump 16 of the washing container 2 is one as a heating pump 22 trained circulating pump 22 arranged, which in conjunction with one inside the washing container 2 arranged spraying system 23 stands. This makes it possible in the washing 2 To be arranged washware during a rinse with water to clean this. Furthermore, a suds pump is in the sump 24 arranged, which makes it possible to pump out no longer needed water to the outside. At the heating pump 22 is both the heating function and the pumping function by the flow control device 19 individually controllable. Further is the flow control device 19 also with the drain pump 24 connected to their control. The adjustment of these components of the dishwasher 1 occurs via at least one data or signal line DL3 from the flow control device 19 out.

The operating device 20 is so with the flow control device 19 connected via at least one data line DL6 that operating commands from the operating device 20 to the flow control device 19 can be transmitted. Furthermore, the data interface 20a such with the flow control device 19 connected via the at least one data line DL2, that of the data interface 20a received operating data of the solar thermal system TSA from the data interface 20a to the flow control device 19 can be transmitted.

The loading of the dishwasher 1 with water as well as the control of the heating pump 22 and the drain pump 24 as well as other devices of the dishwasher which are not explained here 1 depending on a selected wash program. The rinse programs are in the flow control device 19 stored, depending on the set operating mode different washing programs can be called. At least one rinsing program is provided in the first operating mode, which is specifically selectable for the efficient use of solar thermal heated water.

3 shows an exemplary washing program SP1 of the dishwasher according to the invention 1 of the 1 and 2 , which is selectable in the first mode. The wash program SP1 is designed to control a wash cycle when the hot water supply device 6 . 7 the dishwasher 1 is supplied with solar thermal generated hot water from the thermal solar system TSA.

In 3 are shown on a common time axis t the curves SWV, SKV, BAP and BSB, which switching or operating states of components of the dishwasher 1 show on the vertical axis Z

The curve SWV represents the switching state of the hot water valve 6 the dishwasher 1 , Furthermore, the curve SKV shows the switching state of the cold water valve 8th the dishwasher 1 , The switching state "0" corresponds in each case to a closed valve 6 . 8th , the switching state "1" an open valve 6 . 8th , The curve BAP also sets the operating state of the wastewater pump 24 where the off state is symbolized by "0" and the on state by "1". Finally, the curve BSB shows the charging condition of the washing container 2 with water. This is a loaded with hot water from the hot water supply WH washing compartment 2 with "WW", a rinse tank charged with cold water from the cold water supply KH 2 with "KW" and an empty washing container 2 represented by "0".

In 3 For example, a rinsing program SP1 is shown, which in this sequence comprises a pre-rinsing step VS, a cleaning step RS, an intermediate rinsing step ZS, a rinsing step KS and a drying step TS. It is therefore a typical normal rinsing program SP1, which is intended for cleaning normally soiled items. In other examples, one or more of these steps might be hidden. Also examples would be possible in which one or more steps are repeated several times.

The first pre-rinsing step VS serves to remove coarse contaminants from the dishes so as to prepare the cleaning step RS. For this purpose, the cold water valve is at the beginning of Vorspülschritts VS 8th open until the rinse tank 2 with a sufficient amount of cold water from the cold water supply KH is charged. This cold water is by means of the circulation pump 22 for a given time, in As a rule, without switching on its heating device, circulated in order to supply cold water to the dishes. Thereafter, the now contaminated cold water by means of the drain pump 24 pumped out.

The use of cold water from the cold water supply KH during the pre-rinse step VS is possible without any problems, since the removal of the coarser dirt essentially takes place mechanically, so that high temperatures can be dispensed with during the pre-rinse step in many cases. This can be a reheating by means of the heating of the circulation pump 22 be omitted or performed with a low electrical energy input. At the same time, the amount of heat removed from the hot water supply WH can thus be reduced, without the cleaning result being appreciably worsened.

The subsequent cleaning step RS is used to thoroughly clean the dishes. For this purpose, at the beginning of the cleaning step RS, the hot water valve 6 open until the rinse tank 2 is charged with a sufficient amount of hot water from the hot water supply WH. The in the washing container 2 filled hot water is now using the heating pump 22 circulated for a predetermined time, so as to pressurize the dishes with hot water. In this case, the heating of the circulation pump 22 depending on the temperature of the supplied hot water and depending on the intended rinse temperature of the cleaning step RS are switched on as needed. At the conclusion of the cleaning step RS, the now polluted hot water by means of the drain pump 24 pumped out.

During the cleaning step RS, it is usually necessary to apply water to the wash ware, which has a comparatively high temperature in order to achieve a high thermal cleaning effect. In addition, water is generally added to the detergent whose chemical cleaning action is best at a higher temperature. Usually, therefore, a temperature of about 50 ° C to 70 ° C is provided for a cleaning step RS. When using hot water from the thermal solar system TSA for the cleaning step RS so it is ensured that the extracted solar energy TSA heat energy is used meaningfully. In this case, a high saving of electrical energy can be achieved here, since the hot water from the solar thermal system TSA in many cases not at all, in other cases only to a small extent, by the electric heater of the circulation pump 22 the dishwasher 1 must be reheated to reach the required temperature.

The now performed intermediate rinse ZS for removing detergent from the items to be washed after the cleaning step RS also sees a Be loading of the washing 2 with cold water from the cold water supply KH, in order to be able to supply the wash ware with cold water. For this purpose, first the cold water valve 8th open until the rinse tank 2 is charged with a sufficient amount of cold water for the intermediate rinse step ZS. This cold water is by means of the circulation pump 22 circulated for a predetermined time, which as a rule can be omitted switching on their heating device. Thereafter, the now contaminated cold water by means of the drain pump 24 pumped out.

As a rule, no higher temperatures are required during the intermediate rinsing step ZS, so that cold water from the cold water supply can also be used in the intermediate rinsing step ZS without this taking place with a higher electrical energy input by means of the heating pump 22 should be heated. At the same time, the amount of heat removed from the hot water supply WH can be further reduced without the cleaning result being impaired.

In the now subsequent rinse step KS, a loading of items to be washed with hot water from the hot water supply WH is provided. For this purpose, the hot water valve is first again 6 open until the rinse tank 2 is charged with a sufficient amount of hot water from the hot water supply WH for the rinse step KS. The in the washing container 2 filled hot water is now using the circulation pump 22 circulated for a predetermined time, so as to pressurize the dishes with hot water. During the rinsing step KS, the heating device of the circulation pump 22 depending on the temperature of the supplied hot water and depending on its intended rinse temperature can be switched as needed. At the end of the final rinse step KS, the now polluted hot water by means of the drain pump 24 pumped out.

A rinse step KS is used in particular to avoid stains on the dishes, which could be caused by dissolved substances in the water, such as salt and / or lime. For this purpose, the water is added during the rinse step KS with rinse aid. Another object of the rinsing step KS is to prepare a subsequent drying step TS. Thus, during the rinse step KS, the dishes are heated by using particularly hot water, which for example has a temperature of 60 ° C to 75 ° C is used. This evaporate in the subsequent drying step TS on the hot Ge crockery adhering drops of water and hit the inside of the washing container 2 due to the lower temperature prevailing there. When using hot water from the solar system TSA for the rinse step KS is therefore also ensured that the solar energy TSA extracted heat energy is used meaningfully. Again, a high saving of electrical energy can be achieved because the hot water from the solar system TSA in many cases not at all, in other cases only to a small extent, by the electric heater 22 the dishwasher 1 must be reheated to reach the temperature required for the rinse step KS.

During the final drying step TS is a loading of the washing container 2 not provided with water.

4 shows an exemplary washing program SP2 of the dishwasher 1 of the 1 and 2 , which is selectable in the second mode. The wash program SP2 is intended to control a wash cycle when the hot water supply WH is supplied with hot water generated by the auxiliary heater ZH.

at The rinse program SP2 is also a normal rinse program SP2, this being the case with the normal rinsing program described above SP1 corresponds to that there is a substantially identical cleaning and drying effect.

The difference is that the wash program SP2 only provides for the use of cold water from the cold water supply KH. This avoids that the hot water supply WH heat energy is withdrawn, for example, if the solar panels SOK supply too little heat energy. In program steps RS, KS, in which it is necessary or desirable to apply the wash ware with water higher temperature, ie in particular in the cleaning step RS and Klarspülschritt KS, provided for Beaufschla tion of the wash water by means of the heater, in particular the water heater circulating pump 22 be heated. The additional costs for the electrical energy required for this are in many cases lower than the additional costs which would be incurred if the additional heating ZH of the solar thermal system TSA had to be switched on due to an additional hot water withdrawal.

In summary considered the flow control device controls the hot water valve and the cold water valve advantageously such that in a first mode for at least one program step at least one wash program the hot water valve for Supply of hot water from the hot water supply openable and the cold water valve is closed durable, and that in one second mode for at least one program step at least one wash program the cold water valve to Supply of cold water from the cold water supply apparently and the hot water valve is kept closed. additionally can by means of the flow control device in a third Operating mode for at least one program step at least a wash program for mixing hot water and cold water the hot water valve for supplying hot water from the Hot water supply and additionally, in particular at the same time, the cold water valve for supplying cold water from the Cold water supply can be opened.

By these automated control ways by means of the flow control device is the energy-efficient operation of the invention Dishwasher convenient and convenient for an operator easy.

One advantageous embodiment of the invention Dishwasher has at least one additional function button for selecting hot water from a hot water solar system on. Here are expediently two water connections provided, which can be controlled separately with one Aquastop valve each are. A water connection is cost effective for warm Solar water, the other water connection for cold water provided from the mains. Both water connections can be controlled by a dishwasher individually select. After the two valves flows the water then attached via a device side Y-piece in a hose to a water intake system of the dishwasher.

On Based on this base, the dishwasher now has an additional function key (Solar button) received, which can be arranged on the panel. When this button is pressed in the control unit special rinsing processes are activated on the hot water of a hot water solar system are designed.

The Manual selection may be omitted if the dishwasher z. B. transmitted by data transfer the information will, in which way - solar or z. B. with fuel oil - straight is heated.

The The aim of these special washing programs is to and drying performance with the lowest energy consumption always constant without the operator having to remember its water connection to close.

The Dishwasher can now go through this change Press the auxiliary function button in different ways Respond to the goal to achieve as energy efficient to get good rinsing and drying performance. The customer can even in the summer months in bad weather or at the transition to the winter months its dishwasher by a Press key to switch to cold water operation, if over the hot water solar system too little energy in the hot water tank the hot water supply is fed.

In summary, it may therefore be particularly expedient if an operating device of the dishwasher is provided with an extra function key or additional function key for the manual selection of the various operating modes. In particular, it is advantageous if an additional function key for the targeted selection of hot water reference from the respective hot water supply, in particular of hot water from a hot water solar system is provided. In the 1 is such an additional function key with 30 in the control panel of the operating device 20 characterized.

alternative the selection of the respective operating mode by the flow control device yourself. So it can in particular over appropriate Sensors, in particular temperature sensors z. B. in the hot water supply line section and cold water supply pipe section of the Y connection section and / or the hot water valve and cold water valve conclusions about pull the given connection conditions.

In particular, a data interface such. B. 20a for receiving operating data of the external hot water supply, which is at least partially fed in particular by a solar thermal system, be provided. The sequence control device is expediently designed for the automatic selection of the respective operating mode on the basis of the received operating data. In this way, the flow control device can independently recognize whether a solar thermal system or another type of hot water supply system can provide a contribution to hot water for the implementation of at least one program step of a dishwashing program to be started.

• – eine erste Betriebsart, bei der wenigstens ein Spülprogramm aufrufbar ist, welches bei mindestens einem Spülprogrammschritt eine Verwendung von Warmwasser aus der externen Warmwasserversorgung vorsieht,
• – eine zweite Betriebsart, bei der wenigstens ein Spülprogramm aufrufbar ist, welches bei mindestens einem Spülprogrammschritt ausschließlich eine Verwendung von Kaltwasser aus der externen Kaltwasserversorgung vorsieht, und/oder
• – eine dritte Betriebsart, bei der wenigstens ein Spülprogramm aufrufbar ist, welches bei mindestens einem Spülprogrammschritt das Mischen von Warmwasser aus der externen Warmwasserversorgung mit Kaltwasser aus der externen Kaltwasserversorgung vorsieht,

auf.Generally speaking, the flow control device of the dishwasher

• A first operating mode in which at least one rinsing program can be called up which, with at least one rinsing program step, provides for the use of hot water from the external hot water supply,
• A second operating mode, in which at least one washing program can be called up, which exclusively provides for the use of cold water from the external cold water supply in at least one washing program step, and / or
• A third operating mode in which at least one rinsing program can be called up which, in the case of at least one rinsing program step, envisages the mixing of hot water from the external hot water supply with cold water from the external cold water supply,

on.

To In particular, the Y-connector is fixed to the device, preferably provided inside the device. The respective feed of hot water and / or cold water can be by means of a controllable valve in the respective inlet-side supply branch of the Y-connector or in one at this inlet side connected inlet hose using the flow control device Taxes.

Instead of The Y-connector can also be another molded Connecting piece be appropriate, the also a branching of two separate water outlets, in particular from a hot water inlet and from a cold water inlet, on a common expiration piece allowed.

In particular, it may be appropriate, instead of or in addition to the thermal solar system for the provision of a cost hot water in the home a modern condensing boiler such. B. a pellet stove, wood chips, or Holzscheitheizung, a combined heat and power plant, geothermal heat pump, air heat pump system, a district heating system or a local heating system, individually or in any combination, etc. ... to use. In particular, the link z. B. a pellet stove with a thermal solar system be energetically advantageous. In particular, other hot water supply systems, which manage without or only with relatively low primary energy demand of fossil fuel carriers or use only largely CO ₂ neutral energy sources. The explanations given in the case of a solar thermal hot water production plant apply in the presence or presence of another hot water supply system with regard to the design and control of the dishwasher according to the invention in an analogous manner.

1

dishwasher

2

rinse tank

3

door

4

casing

5

Y-connector

6

Hot water valve

7

Hot water inlet line section

8th

Cold water valve

9

Cold water inlet line section

10

joint

111

inlet hose

12

fixed to the housing connector

13

free flow path

16

sump

17

Sewage fitting

18

drain hose

19

A sequence controller

20

operating device

20a

interface

21

procedure

22

circulating pump with water heater

23

spraying

24

Drain pump, sewage pump

30

Additional function key

131 132

Water inlet device

A

sewage pipe

BG

bottom assembly

KH

Cold water supply, Cold water tap

WH

Hot water supply, Hot water tap

TSA

thermal solar system

SOK

solar panel

WT

heat exchangers

ZH

additional heating

SP1

washing program the first mode

SWV

switching status of the hot water valve

SKV

switching status of the cold water valve

BAP

Operating state State sewage pump

BSB

filling state of the washing container

VS

pre-wash

RS

cleaning step

ZS

intermediate rinsing

KS

rinsing step

TS

drying step

SP2

washing program the second mode

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 10046347 A1 [0002]
• - DE 10057263 [0003]

Claims (11)

Dishwasher, in particular domestic dishwasher ( 1 ), with a device-side water intake device ( 131 ), characterized in that at the device-side water inlet device ( 131 ) a connector ( 5 ), in particular Y-connector, with an inlet-side hot water supply line section ( 7 ) for the supply of hot water from an external hot water supply (WH) and with an inlet-side cold water supply line section ( 9 ) to the inlet of cold water from an external cold water supply (KH) as a device-side provided equipment component is attachable. Dishwasher according to claim 1, characterized in that the outlet of the connector ( 5 ) by a substantially material-rigid, in particular rigidly formed output line section ( 11 ) formed with the fitting ( 12 ) of the device-side water intake device ( 131 ) is firmly connected. Dishwasher according to at least one of the preceding claims, characterized in that the connecting piece ( 12 ) of the device-side water intake device ( 131 ) on the outer housing or inside the outer housing ( 4 ) of the dishwasher ( 1 ), on the washing container ( 2 ), or in particular on or in the floor assembly (BG) of the dishwasher ( 1 ), in particular stationary, is provided. Dishwasher according to at least one of the preceding claims, characterized in that the hot water supply line section ( 7 ) and / or the cold water supply line section ( 9 ) factory, in particular by a plug, is closed. Dishwasher according to at least one of the preceding claims, characterized in that the inlet-side hot water supply line section ( 7 ) and the inlet-side cold water supply line section ( 9 ) of the connection section ( 5 ) are formed substantially as a material-rigid, in particular largely rigid connecting pieces. Dishwasher according to at least one of the preceding claims, characterized in that the inlet-side hot water supply line section ( 7 ) via a device-external supply line ( 71 ), in particular hose line, to a hot water valve ( 6 ), in particular an aquastop valve, and / or that the inlet-side cold water inlet section ( 9 ) via a device-external supply line ( 91 ), in particular a hose line, to a cold water valve ( 8th ), in particular an aquastop valve, can be connected. Dishwasher according to claim 6, characterized in that the hot water valve ( 6 ) to a fitting of an external hot water supply (WH), which is partially or completely fed in particular by a solar thermal system, can be fastened, and that the cold water valve ( 8th ) is attachable to a connector of an external cold water supply (KH). Dishwasher according to at least one of the preceding claims, characterized in that for controlling at least one wash cycle for cleaning items to be washed a flow control device ( 19 ) is provided. Dishwasher according to at least one of claims 6 and 8, or 7 and 8, characterized in that the flow control device ( 19 ) the hot water valve ( 6 ) and the cold water valve ( 8th ) such that in a first operating mode for at least one program step of at least one wash program (SP1) the hot water valve ( 6 ) for supplying hot water from the hot water supply (WH) and the cold water valve ( 8th ) is durable, that in a second mode for at least one program step at least one wash program (SP2) the cold water valve ( 8th ) for the supply of cold water from the cold water supply (KH) apparently and the hot water valve ( 6 ) is durable, and / or that in a third mode for at least one program step of at least one wash program for mixing hot water and cold water, the hot water valve ( 6 ) for supplying hot water from the hot water supply (WH) and additionally the cold water valve ( 8th ) for supplying cold water from the cold water supply (KH) is apparent. Dishwasher according to claim 9, characterized in that an operating device ( 20 ), in particular additional function key ( 30 ) is provided, which allows a manual selection of the respective mode. Dishwasher according to claim 9, characterized in that a data interface ( 20a ) for receiving operating data of the external hot water supply (WH), which is at least partially fed in particular by a solar thermal system (TSA), is provided, and that the flow control device ( 19 ) is designed for the automatic selection of the respective operating mode on the basis of the received operating data.