WO2010142559A1 - Lave-vaisselle doté d'un dispositif d'alimentation en eau côté appareil - Google Patents

Lave-vaisselle doté d'un dispositif d'alimentation en eau côté appareil Download PDF

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Publication number
WO2010142559A1
WO2010142559A1 PCT/EP2010/057577 EP2010057577W WO2010142559A1 WO 2010142559 A1 WO2010142559 A1 WO 2010142559A1 EP 2010057577 W EP2010057577 W EP 2010057577W WO 2010142559 A1 WO2010142559 A1 WO 2010142559A1
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WO
WIPO (PCT)
Prior art keywords
hot water
cold water
water supply
dishwasher
inlet
Prior art date
Application number
PCT/EP2010/057577
Other languages
German (de)
English (en)
Inventor
Roland Rieger
Michael Rosenbauer
Original Assignee
BSH Bosch und Siemens Hausgeräte GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeräte GmbH filed Critical BSH Bosch und Siemens Hausgeräte GmbH
Publication of WO2010142559A1 publication Critical patent/WO2010142559A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4217—Fittings for water supply, e.g. valves or plumbing means to connect to cold or warm water lines, aquastops

Definitions

  • the invention relates to a dishwasher, in particular household dishwasher, with a device-side water inlet device.
  • the domestic appliance of 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 object of the invention is to provide a dishwasher, in particular a domestic dishwasher, which can be connected in the simplest possible way for energy-efficient operation.
  • This object is achieved in a dishwasher, in particular domestic dishwasher, of the type mentioned in that at 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 cold water supply line section to Inlet of cold water from an external cold water supply as a device-side provided equipment component is attachable.
  • the water inlet device of the dishwasher according to the invention in particular domestic dishwasher, device side with a connector, in particular Y-connector, can be equipped, in particular already factory-prepared, the connection of the dishwasher to an external hot water supply and an external cold water supply for an operator is facilitated or simplified. Because it is not necessary to obstruct 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 by means of three long water hoses. Since the connecting piece can be attached directly to the water inlet device of the dishwasher, an outwardly guided, ie long out of the housing of the dishwasher out water supply hose between the water inlet device of the dishwasher and the connector can be omitted.
  • the connector is thus preferably provided as a device-side equipment component.
  • it can form an installation component in the dishwasher or an attachment to the dishwasher.
  • this mechanically safe that can be reliably connected to the water inlet device.
  • Unacceptable stresses, especially unacceptably high tensile loads on the connector, as well as other unacceptable damage to the connector are largely avoided in this way, which in contrast with a free, "overhead-down" suspension of the connector to the water connections, especially faucets of the external Hot water supply and external cold water supply.
  • two external water supply hoses for connecting the hot water supply line section of the connection piece to the external hot water supply and the cold water supply line section of the connection piece to the external cold water supply are advantageously sufficient, ie two connection processes suffice, which simplifies assembly for an operator or a fitter.
  • unacceptably high tensile loads or other unacceptably high mechanical stresses of these water supply hoses are che as well as the water connections, in particular taps of the external hot water supply and the external cold water supply to which the water inlet hoses are coupled upstream side, largely avoided, which in contrast can occur in the case of a freely suspended connector by its own weight becoming effective.
  • the storage and the packaging of the dishwasher is simplified by eliminating the connector as loose, external extra component.
  • a device-side attachment of the connector ensures a kind of standardization, in particular standardization of the assembly or production, warehousing and packaging of such 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.
  • the output of the connecting piece is formed by a substantially material-rigid, in particular rigidly formed, output line section.
  • the connector of the device-side water inlet device is preferably also material stiff, in particular rigid.
  • the output line section and the connecting piece can in particular be connected to one another in a fluid-tight manner by latching, screwing, clamping, form fit or snug fit, frictional connection, adhesive bonding, etc., or any other connection technique.
  • the outlet fitting of the fitting and the fitting of the water inlet fitting may also be integrally connected, i. e. form a single molding.
  • a dishwasher equipped in this way allows an integrated, mechanically protected attachment of the connecting piece in the housing or on another wall part or outer component of the dishwasher.
  • the thus formed dishwasher largely retains its original, compact external dimensions even after installation or installation of the connector.
  • the hot water supply line section and / or the cold water supply line section are preferably closed by a plug.
  • the dishwasher is equipped with a universal connection option. If, for example, only an external cold water connection of the connecting piece is available, the cold water inlet section can be opened, in particular its inlet-side plug, removed and only this can be connected to the cold water supply, while the hot water supply line section remains closed. Accordingly, the hot water supply line section is opened when only an external hot water connection is present. The cold water connection, however, remains closed.
  • the inlet-side hot water supply line section and the inlet-side cold water supply line section of the connection section are substantially formed as material-rigid, in particular substantially rigid connecting pieces. As a result, the connection of 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 of the connecting piece is facilitated.
  • the inlet-side hot water supply line section via a device external supply line, in particular hose, to a hot water valve, in particular an aquastop, connectable, and / or the inlet side cold water inlet section via a device external supply line, in particular hose, to a cold water valve, in particular an aquastop valve, connected.
  • a hot water valve in particular an aquastop
  • a cold water valve in particular an aquastop valve
  • the hot water valve to a fitting of an external hot water supply, which is partially or completely fed in particular by a solar thermal system, attachable, and that the cold water valve to a fitting of an external cold water supply attachable. This considerably improves the energy efficiency of the dishwasher, since, in particular for solar thermal heated hot water, no combustion of fossil fuels is required.
  • a low-cost hot water supply in addition to or in addition to a solar system in the home by a modern condensing boiler such.
  • Pellet stove, wood chips, or HolzscheitMapung 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.
  • the combination of a pellet stove with a solar thermal system to be energetically advantageous.
  • a sequence control device in the respective dishwasher for controlling at least one rinse cycle for cleaning items to be washed.
  • the sequence control device controls the hot water valve and the cold water valve in an advantageous manner such that in a first operating 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 a program step of at least one purge Program the cold water valve for supplying cold water from the cold water supply apparently and the hot water valve is closed durable, and / or that in a third mode for at least one program step at least one program for mixing hot water and cold water, the hot water valve for supplying hot water from the hot water supply and additionally the cold water valve for supplying cold water from the cold water supply is apparent.
  • an operating device which allows a manual selection of the respective operating mode. This allows the user the independent, free decision as to whether and when water from the external hot water supply and / or cold water supply is supplied via the connection piece of the dishwasher.
  • the selection of the respective operating mode can be carried out by the sequence control device itself.
  • the sequence control device itself.
  • it can in particular via corresponding sensors, in particular temperature sensors, e.g. in the hot water supply line section and cold water supply line section of the connection section and / or the hot water valve and cold water valve draw conclusions about the given connection conditions.
  • a data interface for receiving operating data of the external hot water supply, which is at least partially fed in particular by a thermal solar system may 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 sequence control device can independently recognize whether, in particular, a solar thermal system can supply a contribution to hot water for carrying out at least one program step of a dishwasher program to be started.
  • a thermal solar system is a technical system for converting solar energy into usable thermal energy. This thermal solar systems usually provide hot water in a temperature range of, for example, 40 0 C to 70 0 C ready, which makes a direct use of hot water for heating buildings but also as service water possible.
  • Thermal solar systems typically include a plurality of solar collectors having an absorber surface that is heated by the electromagnetic solar radiation. From there, the heat can be transported by means of a fluid to a heat exchanger that generates the 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.
  • a domestic heating system which is partially or completely fed in particular by a solar system
  • the dishwashing machine according to the invention makes it possible, in particular, to efficiently use cost-effective hot water, in particular by means of a solar system.
  • the sequence control device preferably has a first operating mode in which at least one rinsing program can be called, which provides for hot water from the hot water supply in a rinse, and wherein the flow control device has a second mode in which at least one rinse program can be called, which at a rinse exclusively a use of cold water from the cold water supply provides.
  • the first operating mode is therefore a hot water operation in which at least partially hot water, in particular from a solar thermal assisted, hot water supply is used for a rinse, while it is a pure cold water operation in the second mode, in which for a rinse exclusively Cold water from the cold water supply is used.
  • the first mode of operation allows efficient rinse cycles when the cost savings due to the reduction of the internal heating requirement of the dishwasher is greater than the additional cost of operating the hot water supply resulting from the removal of hot water.
  • the second mode of operation makes it possible to carry out rinsing cycles efficiently if the cost savings due to the reduction of the internal heating requirement of the dishwasher is lower than the additional costs of operating the hot water supply, which results from the removal of hot water.
  • the solar panels provide a heat surplus in relation to the other household needs, this heat surplus can be used to generate heat. kung of the internal energy demand of the dishwasher can be used in a simple manner that the first mode is selected. If, on the other hand, the solar collectors provide too little heat in relation to the heat demand of the household, it can be prevented by selection of the second operating mode that heat is withdrawn from the hot water supply, which would have to be compensated by heating with the usually more expensive additional heating.
  • the rinse programs which can be called upon selection of the first operating mode are preferably adapted with regard to their time sequence especially to the use of hot water, in particular from the thermal solar system.
  • the wash programs that can be called upon selection of the second operating mode are particularly adapted to the use of cold water with regard to their time sequence. In both cases, such a predetermined cleaning effect or drying effect can be achieved with high efficiency.
  • corresponding rinsing programs can advantageously be provided, which are similar by a substantially identical cleaning action and / or drying effect.
  • corresponding normal rinse programs, corresponding intensive programs, corresponding soft-programs or corresponding automatic programs may be provided.
  • the corresponding programs can alternatively or additionally be designed as quick-flushing programs.
  • At least one washing program can be called in the first operating mode, which provides at least one program step for washing items to be washed using hot water from the hot water supply.
  • hot water may be taken from the external water supply for this program step in the first mode.
  • it may in particular be a cleaning step and / or a rinsing step, since there is usually provided to apply the wash ware with relatively hot water.
  • the hot water can be taken 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 thermal solar system, provides sufficient 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.
  • the third mode is a combined warm and cold water operation in which hot water is mixed with cold water. Due to the at least partial use of cold water from the external cold water supply, it is possible program steps in which the use of hot water with too high temperature from the external hot water supply would bring any advantages or disadvantages would be carried out instead using mixed water efficiently. Again, the additional intake of cold water in addition to the hot water before or during the respective program step.
  • the third operating mode in particular, that the amount of hot water withdrawn from the solar system when carrying out a rinse cycle is expediently restricted to a minimum mass.
  • the third operating mode can also be usefully selected if the solar collectors supply comparatively little heat energy.
  • rinsing programs for controlling a rinse are possible which the implementation of individual program steps using hot water from the external hot water supply, the implementation of other program steps using cold water from the external cold water supply, and the implementation of other program steps using Provide cold water from the external cold water supply and simultaneous use of hot water from the external hot water supply.
  • both compared to known dishwashers, which are - as usual especially in Europe - are provided exclusively for connection to a cold water supply, as well as against known dishwashers, which - as usual especially in North America - exclusively for connection to a hot water supply a significant increase in efficiency can be achieved.
  • an operating device which enables a manual selection of the operating mode.
  • Such an operating device allows the operator to decide for himself whether Hot water may be used, or whether only cold water should be included.
  • the operating device may be, for example, an additional button, which is arranged on a control panel of the dishwasher. But it is also possible to provide for switching the operating mode operating devices, which are already provided for other operating procedures. Conceivable are multifunction buttons, knobs, touch screens, alphanumeric input units and the like.
  • the dishwasher has a data interface, which is provided for receiving operating data of the hot water supply system, in particular solar thermal system, wherein the flow control device is designed for automatic selection of the operating mode based on received operating data.
  • operating data can be, for example, information relating to the power of the solar panels or information relating to the amount of heat stored in a heat accumulator of a solar system. In this way, an automatic selection of each more efficient mode is possible.
  • the hot water inlet 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 are independently controllable by the sequence control device.
  • the hot water valve is arranged at an upstream end of a hot water hose and adapted to be fastened to a fitting of the external hot water supply, and / or that the cold water valve is arranged at an upstream end of a cold water hose and so is formed that it is connected to a connector of the external cold water supply is fastened.
  • the hot water valve and / or the cold water valve can for this purpose have connection threads, for example, which correspond with threads of household faucets.
  • Such valves can be designed in particular as so-called Aquastop valves.
  • the arrangement of the hot water valve and / or the cold water valve at the upstream end of the water inlet device has the advantage that practically no leakage water can escape from the dishwasher, even in the event of damage, as long as the valves are closed. If the valves are designed to close when not energized, leaking of leakage water from a switched-off dishwasher is prevented in virtually all cases.
  • the flow control device may be associated with a leak water sensor for detecting leakage water, so that the flow control device can close the valves when leak water occurs during operation of the dishwasher.
  • Figure 1 is a schematic spatial representation of an embodiment of a dishwasher according to the invention
  • FIG. 2 is a schematic block diagram of the dishwasher according to the invention of Figure 1;
  • FIG. 3 schematically shows a rinsing program of a first operating mode of the e dishwasher of FIG. 1, and FIG.
  • FIG. 4 schematically shows a rinsing program of a second operating mode of the e
  • Dishwasher of Figure 1 Dishwasher of Figure 1.
  • corresponding parts are provided with the same reference numerals.
  • only those components of a dishwasher are provided with reference numerals and explained, which are necessary for the understanding of the invention.
  • the dishwasher according to the invention can comprise further parts and assemblies.
  • FIG. 1 shows a schematic three-dimensional view of an advantageous embodiment of a dishwasher 1 according to the invention.
  • This has a washing container 2 which can be closed by a door 3, so that a washing cell for washing dishes is produced.
  • the rinsing container 2 is arranged in the interior of a housing 4 of the dishwasher 1, which may have standard dimensions.
  • the housing 4 may have a width of 45 cm or 60 cm, which enables integration of the dishwasher 1 into a standard kitchen unit with a corresponding installation niche.
  • this outer housing may also be partially or completely omitted.
  • the side walls of the housing may be omitted.
  • the items to be washed are introduced into the washing container 2 and are cleaned there in a so-called rinsing process, which is also called rinse, 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.
  • 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.
  • 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, the effort here being one or more Dimensions, such as the energy requirements and / or the time required may include.
  • a sequence control device 19 in which one or more wash programs for controlling a specific wash cycle for cleaning items to be washed are 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 be taken up via a device-side, in particular device-rear water inlet device 131, 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 each program step.
  • the dishwasher 1 In order to be able to provide the water intended for rinsing with the intended cleaning and / or additives, the dishwasher 1 usually has an automatic dosing device. This has been omitted in the figure 1 for the sake of clarity.
  • a typical washing program comprises a pre-rinsing step, a cleaning step, an intermediate rinsing step and a rinsing step in which the items to be washed are each subjected to water.
  • rinsing programs in which one or more of these program steps are hidden.
  • rinse programs are possible in which one or more of these program steps are repeated several times or one or more additional steps.
  • a typical washing program includes an adjoining drying step for drying the cleaned items to be washed.
  • a pre-rinse step serves primarily to remove coarse contaminants from the items to be washed. The purpose of a subsequent cleaning step is to completely remove contaminants from the dishes.
  • An optionally subsequently performed intermediate rinsing step can serve in particular for the removal of cleaning agent residues which adhere to the items to be washed.
  • a subsequent rinse step is intended in particular to avoid stains on the items to be washed, which could be caused by dissolved substances in the water, such as, for example, salt and / or lime.
  • the water is added during the rinse step with rinse aid.
  • Another object of the rinse step is to prepare the subsequent drying step.
  • the items to be washed are heated to a high temperature during the rinse step.
  • water droplets adhering to the hot items evaporate and, on the inside of the rinse container, beat off as liquid droplets due to the lower temperature prevailing there.
  • the dishwasher 1 may 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 has also been omitted in FIG. 1 for the sake of simplicity.
  • the schematically illustrated water inlet device 131 is arranged with its connection piece 12.
  • the connecting piece 12 of the device-side water inlet device 131 may be provided on the outer housing or inside the outer housing 4 of the dishwasher 1, preferably on the washing container 2. It is particularly expedient to provide the connecting piece 12 on or in the base assembly BG of the dishwasher 1, in particular in a stationary manner.
  • This advantageous arrangement of the water inlet device is additionally shown in phantom in Figure 1 and designated 132.
  • connection piece 12 of the water inlet device 131 or 132 on the device side with the Y-connector 5 is 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.
  • the external cold water supply and the dishwasher by means of three long water hoses. Since the outlet 11 of the Y-connector 5 can be attached directly to the connection piece 12 of the water inlet device 131 or 132 of the dishwasher, in particular can be coupled, a guided outwardly, ie long out of the housing 4 of the dishwasher 1 water supply hose 1 11 between the water inlet device 131st the dishwasher 1 and the Y-connector 5 omitted. The omission or the absence of such outwardly directed water supply hose 11 1 is symbolized in the figure 1 by a cross.
  • the Y-connector 5 is thus preferably provided as a device-side equipment component, ie it is in particular a built-in component or an attachment in or on at least one part such as 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 bottom assembly BG to the provided there connector 12 of the water inlet device 132 directly, ie without external, led out to the outside line hose, be coupled. Such a dishwasher allows a particularly integrated, mechanically protected attachment of the Y-connector.
  • two external water supply hoses 71, 91 for connecting 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 connection 5 to the external cold water supply are particularly sufficient in the device side mounting of the Y-connector 5 KH, ie two connection processes are sufficient, which simplifies installation for an operator or a fitter.
  • unacceptable tensile loads or other impermissible mechanical stresses these water inlet hoses and 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 are coupled upstream largely avoided, which in contrast in the case of a freely suspended Y. Connections can occur through its effective self-weight.
  • the storage and the packaging of the dishwasher is simplified by eliminating the Y-connector as a loose, external, freely suspended extra component.
  • the device-side attachment of the Y-connector ensures a kind of standardization, in particular standardization of the assembly or production of dishwashers designed in this way.
  • the dishwasher according to the invention with the device-side mounted Y-connector is prepared in this way so that they are available depending on existing Water connection conditions in each case to an external hot water supply alone, an external cold water supply alone, or connected both to an external hot water supply and at the same time to an external cold water supply.
  • the output 11 of the Y-connector 5 is formed by a substantially rigid material, in particular rigidly formed output line section.
  • the connector 12 of the device-side water inlet device 131 or 132 is preferably also material stiff, in particular rigid.
  • 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.
  • the outlet fitting of the Y-connector and the fitting of the water inlet fitting may also be integrally connected, i. e. form a single molding.
  • the hot water supply line section 7 and / or the cold water supply line section 9 of the Y connection piece 5 can be factory-closed, preferably in each case by a plug.
  • the dishwasher is equipped with a universal connection option. If, for example, only one external cold water connection KH is available, the cold water inlet section 9 of the Y connection piece 5 is opened, in particular its inlet side plug, and only this cold water inlet section 9 is connected to the cold water supply KH, while the hot water supply line section 7 remains closed. Accordingly, the hot water supply line section 7 is opened when only an external hot water connection WH is present. The cold water connection, however, remains closed.
  • the inlet-side hot water supply line section 7 and the inlet-side cold water supply line section 9 of the Y connection section are likewise designed essentially as material-rigid, in particular substantially rigid connecting pieces.
  • the inlet-side hot water supply line section 7 is connected on the input side via the external supply line 71, in particular hose, to an upstream, controllable hot water valve 6, and the inlet side cold water inlet section 9 on the input side via the external supply line 91, in particular hose, to an upstream arranged , controllable cold water valve 8 connected.
  • the hot water valve 6 and cold water valve 8 are basically constructed identically.
  • both valves 6, 8 may be formed as a solenoid valve.
  • the inlet sides of the valves 6, 8 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.
  • connection can be made in each case by means of a screw connection, a snap connection or the like.
  • valves 6, 8 it is possible to regulate the supply of hot water and / or cold water. These are controllable in particular by the flow control device 19 of the dishwasher with regard to their flow rate.
  • Such valves 6, 8 are designed in particular as Aquastop valves.
  • these are closed when they are not activated, so that the dishwasher 1 in the off state of the hot water and the cold water Supply is disconnected. In this way, leakage of leakage water from the switched-off dishwasher 1 can be avoided in the event of a fault.
  • the input side of the hot water valve 6 is therefore attached to a fitting, in particular faucet, the external hot water supply WH, which is partially or completely fed in particular by a solar thermal system, and the input side of the cold water valve 8 is at a fitting, in particular faucet, the external cold water supply KH attached.
  • the input side of the hot water valve 6 are connected to a hot water tap and the input side of the cold water valve 8 to a cold water tap.
  • the output side of the hot water valve 6 is connected to the hot water hose 71 and the output side of the cold water valve 8 with the cold water hose 91, 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 Kaltwasserzu- supply line section 9 of the device side attached Y-connector ⁇ led and connected to these liquid-tight.
  • the device-side Y-connector 5 it is therefore possible to individually direct hot water from an external hot water supply WH and / or cold water from an external cold water supply KH into the interior of the dishwasher 1.
  • the hot water hose 71 and the cold water hose 91 may be formed as safety hoses with an inner water-carrying pressure hose and an outer Hüllschlauch, wherein between the pressure hose and sheath each a leak water channel for discharging any leak water may be provided.
  • the Y-connector 5 may be formed so that the leakage water channels of the hot water hose 71 and the cold water hose 91 are interconnected, so that leakage water, which occurs during operation of the dishwasher 1, via a leak Water channel in the device-side Y-connector 5 and in the housing-fixed connector 12 can be passed into the interior of the dishwasher 1.
  • a leak water sensor not shown, so that appropriate measures, such as closing the hot water valve 6 and cold water valve 8, can be initiated.
  • a free flow path 13 is provided in the dishwasher 1 (see FIG. 2).
  • the free flow path 13 is a so-called pipe interruption, which serves to prevent a sucking back of water from the dishwasher 1, if in the external water supply by dynamic processes, a negative pressure. 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 also has components not shown in FIG. 1, which make it possible to direct hot water and / or cold water from the outlet of the free flow path 13 into the washing container 2.
  • a pump pot 16 in which a circulating pump is suitably provided for circulating water in the washing container 2 during a rinse cycle.
  • the circulation pump may have a heating device for heating the water located in the washing container 2, for example a water heater.
  • a pump for pumping out water for example at the end of a rinse cycle, be provided.
  • the various pumping functions can also be perceived by a single pump in conjunction with switchable valves.
  • the sump 16 is usually connected to a waste water connection piece 17 via means not shown so that water from the washing compartment 2 via a connected to the wastewater connection piece 17 sewage hose 18 in a building side installed wastewater A, such as a sewer pipe A, can be pumped.
  • the hot water inlet 6, 7 of the dishwasher 1 as intended to the external hot water supply WH, which is partially or completely supplied in particular by a thermal solar system TSA with hot water 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.
  • the solar system has a conventional auxiliary heating ZH, for example a gas or oil heater, which can also supply heat to the heat exchanger WT.
  • auxiliary heating ZH for example a gas or oil heater
  • the dishwasher 1 also has the sequence control device 19 for controlling the course of a rinse cycle after a rinse program.
  • 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.
  • 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 sequence control device 19 is connected to an operating device 20, which is arranged on a control panel of the door 3 of the washing compartment 2.
  • the flow control device 19 itself is arranged inside the door 3. However, both could also be arranged elsewhere on the dishwasher 1. Thus, the flow control device 19 may 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.
  • the dishwasher 1 has a data interface 20a, which is provided for receiving operating data of the hot water supply WH.
  • it can be connected via a data line, for example with a controller of the solar thermal system TSA.
  • a data line is designated DL1 in FIG.
  • the data interface 20a is furthermore connected to the sequence control device 19 via a data line DL2, wherein the sequence control device 19 is designed to automatically select the mode based on the received operating data. For example, it is possible for the dishwasher 1 to automatically switch to the second operating mode if the power of the solar collectors SOK falls below a certain limit value. 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.
  • valves 6, 8 for metering 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 carried out via corresponding signal lines DL4, DL5 of the flow control device 19.
  • FIG. 2 shows a block diagram of the dishwasher of Figure 1.
  • the hot water valve 6 and the cold water valve 8 are each connected via the data lines DL5, DL6 with the flow control device 19, that both are individually controlled. This makes it possible to feed the washing container 2 of the dishwasher 1 via the device-side mounted Y-connector 5, the device-internal free flow path 13 and an inlet 21 specifically with hot water and / or cold water.
  • a heating pump 22 designed as a circulation pump 22 is arranged, which is in communication with a arranged in the interior of the washing container 2 spray system 23. This makes it possible to apply in the washing container 2 arranged items to be washed during a wash with water to clean this.
  • a drain pump 24 is arranged in the sump, which makes it possible to pump out no longer needed water to the outside.
  • both the heating function and the pumping function can be individually controlled by the sequence control device 19. Further is the Sequence control device 19 also connected to the drain pump 24 to the control. The adjustment of these components of the dishwasher 1 via at least one data or signal line DL3 from the flow control device 19 from.
  • the operating device 20 is connected to the sequence control device 19 via at least one data line DL6 such that operating commands can be transmitted from the operating device 20 to the sequence control device 19. Furthermore, the data interface 20a is connected to the sequence control device 19 via the at least one data line DL2 such that the operating data of the thermal solar system TSA received by the data interface 20a can be transmitted from the data interface 20a to the sequence control device 19.
  • the feeding of the dishwasher 1 with water takes place just like the control of the heating pump 22 and the drain pump 24 as well as other devices of the dishwasher 1, not explained here, as a function of a selected washing program.
  • the rinse programs are stored in the flow control device 19, wherein depending on the set operating mode different rinse 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.
  • FIG. 3 shows an exemplary washing program SP1 of the inventive dishwasher 1 of FIGS. 1 and 2, which can be selected in the first operating mode.
  • the wash program SP1 is intended to control a wash cycle when the hot water supply device 6, 7 of the dishwasher 1 is supplied with solar thermal generated hot water from the solar thermal system TSA.
  • FIG. 3 shows on a common time axis t the curves SWV, SKV, BAP and BSB which indicate switching or operating states of components of the dishwasher 1 on the vertical axis Z.
  • the curve SWV represents the switching state of the hot water valve 6 of the dishwasher 1.
  • the curve SKV shows the switching state of the cold water valve 8 of the dishwasher 1.
  • the switching state "0" corresponds in each case a closed valve 6, 8, the switching state "1” an open Valve 6, 8.
  • the curve BAP continues to represent the operating state of the sewage pump 24, wherein the off state is symbolized by "0" and the on state by "1".
  • the curve BSB shows the charging state of the washing container 2 with water.
  • a with hot water from the hot water supply WH charged rinse tank 2 with "WW” a supplied with cold water from the cold water supply KH washing tank 2 with "KW” and an empty washing container 2 by "0".
  • FIG. 3 shows, by way of example, a rinsing program SP1, 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.
  • the cold water valve 8 is opened at the beginning of Vor Togetherarias VS until the washing container 2 is charged with a sufficient amount of cold water from the cold water supply KH.
  • This cold water is circulated by the circulating pump 22 for a predetermined time, usually without switching on their heating, so as to pressurize the dishes with cold water. Thereafter, the now contaminated cold water is pumped out by means of the drain pump 24 to the outside.
  • 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 reheat by means of the heater of the circulation pump 22 to be omitted or carried out with a small electrical energy input.
  • 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.
  • the hot water valve 6 is opened at the beginning of the cleaning step RS until the washing container 2 is charged with a sufficient amount of hot water from the hot water supply WH.
  • the filled in the washing tank 2 hot water is now circulated by means of the heat pump 22 for a predetermined time, so as to pressurize the dishes with hot water.
  • the heating device of the circulation pump 22 can be switched as needed as a function of the temperature of the supplied hot water and in dependence on the intended rinse temperature of the cleaning step RS.
  • the now polluted hot water is pumped out by means of the drain pump 24 to the outside.
  • 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.
  • water is generally added to the detergent whose chemical cleaning action is best at a higher temperature.
  • a temperature of about 50 0 C to 70 0 C is provided for a cleaning step RS.
  • the intermediate rinsing step ZS now carried out for removing cleaning agent from the items to be washed after the rinsing step RS also provides a Send the rinsing container 2 with cold water from the cold water supply KH in order to be able to apply cold water to the items to be washed.
  • the cold water valve 8 is opened until the rinsing container 2 is charged with a sufficient amount of cold water for the intermediate rinsing step ZS.
  • This cold water is circulated by means of the circulation pump 22 for a predetermined time, which as a rule can be omitted connecting their heating device. Thereafter, the now contaminated cold water is pumped out by means of the drain pump 24 to the outside.
  • the hot water valve 6 is first opened again until the washing container 2 is charged with a sufficient amount of hot water from the hot water supply WH for the final rinse step KS.
  • the filled in the washing container 2 hot water is now circulated by means of the circulation pump 22 for a predetermined time, so as to pressurize the dishes with hot water.
  • the heating device of the circulating pump 22 can be switched on as required as a function of the temperature of the hot water supplied and as a function of its intended rinsing temperature.
  • the now polluted hot water is pumped out by means of the drain pump 24 to the outside.
  • 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.
  • 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. So will be during the Rinsing step KS heated the dishes by particularly hot water, which has, for example, a temperature of 60 0 C to 75 ° C, is used. As a result, water droplets adhering to the hot dishes evaporate in the subsequent drying step TS and precipitate on the inside of the washing container 2 due to the lower temperature prevailing there.
  • FIG. 4 shows an exemplary washing program SP2 of the dishwasher 1 of FIGS. 1 and 2, which can be selected in the second operating 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.
  • the rinsing program SP2 is likewise a normal rinsing program SP2, which corresponds to the normal rinsing program SP1 described above in such a way that it has a substantially identical cleaning and drying action.
  • 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.
  • program steps RS, KS in which it is necessary or desirable to pressurize the items to be washed with water at a higher temperature, ie in particular in the cleaning step RS and in the final rinse step KS, this can be used for loading Supply of the dishes provided water by means of the heater, in particular the water heater of the circulation pump 22 are 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.
  • the flow control device controls the hot water valve and the cold water valve in an advantageous manner so 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 and the closed cold water valve is durable, and that in a second Operating mode for at least one program step of at least one wash program the cold water valve for supplying cold water from the cold water supply apparently and the hot water valve is closed durable.
  • the hot water valve for supplying hot water from the hot water supply and additionally, in particular simultaneously, the cold water valve for supplying cold water from the cold water supply may be apparent by the flow control device in a third mode for at least one program step at least one program for mixing hot water and cold water.
  • the energy-efficient operation of the dishwasher according to the invention is convenient and simple for an operator.
  • An advantageous embodiment of the dishwasher according to the invention has at least one additional function key for the selection of hot water reference from a hot water solar system.
  • two water connections are expediently provided which can be controlled separately with one Aquastop valve each.
  • One water connection is provided for warm inexpensive solar water, the other water connection for cold water from the mains. Both water connections can be individually selected via a control of the dishwasher. After the two valves, the water then flows through a side mounted Y-piece in a hose to a dishwashing system of the dishwasher.
  • the dishwasher has now received an additional function key (solar button), which can be arranged on the panel.
  • solar button can be arranged on the panel.
  • special flushing sequences can be activated in the control unit, which are designed for the hot water of a hot water solar system.
  • the manual selection can be omitted if the dishwasher z. B. by data transmission the information is transmitted, in which way - solar or e.g. with heating oil - just heated.
  • the dishwasher can now respond to this change by pressing the auxiliary function button in various ways to achieve the goal of getting as good energy-saving good rinsing and drying performance.
  • the customer can even in the summer months in bad weather or at the transition to the winter months change its dishwasher by pressing a button on cold water operation, when the hot water solar system too little energy is fed into the hot water tank of the hot water supply.
  • 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.
  • 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.
  • such an additional function key is identified by 30 in the control panel of the operating device 20.
  • the selection of the respective operating mode can be carried out by the sequence control device itself.
  • a data interface such as e.g. 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.
  • the sequence control device of the dishwasher has a first operating mode in which at least one washing program can be called, which provides for the use of hot water from the external hot water supply in at least one washing program step, a second operating mode in which at least one washing program can be called, at least one Rinse program step exclusively provides a use of cold water from the external cold water supply, and / or a third mode in which at least one rinse program is called, which at least one rinse program step, the mixing of hot water from the external hot water supply with cold water from the external cold water supply provides.
  • the Y-connector is in particular fixed to the device, preferably provided inside the device.
  • the respective inflow of hot water and / or cold water leaves Control by means of a controllable valve in the respective inlet-side feed branch of the Y-connector or in a feed hose connected thereto at the inlet end by means of the flow control device.
  • another shaped connecting piece may be expedient, which also allows a branching of two separate water outlets, in particular from a hot water inlet and from a cold water inlet, to a common outlet piece.
  • the solar thermal system for providing a cost domestic hot water supply a modern condensing boiler such as a Pelletofen-, wood chips, or Holzscheitterrorismung, 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.
  • a modern condensing boiler such as a Pelletofen-, wood chips, or Holzscheitterrorismung
  • 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.
  • the combination of, for example, a pellet stove with a thermal solar system can be energetically advantageous.
  • 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

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  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Washing And Drying Of Tableware (AREA)

Abstract

L'invention concerne un lave-vaisselle, notamment un lave-vaisselle ménager (1), comportant un dispositif d'alimentation en eau (131) côté appareil, sur lequel est monté un élément de raccordement (5), notamment un élément de raccordement en Y, qui présente une conduite d'arrivée d'eau chaude (7) côté entrée, pour l'alimentation en eau chaude venant d'une source externe d'alimentation en eau chaude (WH), et une conduite d'arrivée d'eau froide (9) côté entrée, pour l'alimentation en eau froide venant d'une source externe d'alimentation en eau froide, ledit élément de raccordement étant un élément d'équipement prévu côté appareil.
PCT/EP2010/057577 2009-06-10 2010-06-01 Lave-vaisselle doté d'un dispositif d'alimentation en eau côté appareil WO2010142559A1 (fr)

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DE102009026879.0 2009-06-10
DE200910026879 DE102009026879A1 (de) 2009-06-10 2009-06-10 Geschirrspülmaschine mit geräteseitiger Wassereinlasseinrichtung

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WO2010142559A1 true WO2010142559A1 (fr) 2010-12-16

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH576091A5 (en) * 1975-01-31 1976-05-31 Zug Verzinkerei Ag Crockery washing machine mixing valve - has mixing chamber thermostat regulating cold water valve discharge into chamber
DE3023355A1 (de) * 1980-06-21 1982-01-14 Willi Dipl.-Volksw. 7560 Gaggenau Bauer Wasserversorgungseinrichtung, insbesondere fuer haushaltsgeraete
DE10046347A1 (de) * 2000-09-19 2002-03-28 Bsh Bosch Siemens Hausgeraete Wasserzufuhreinrichtung für Haushaltgeräte
DE10057263A1 (de) * 2000-11-18 2002-05-23 Aeg Hausgeraete Gmbh Hausgerät mit einer Programmablaufsteuerung
DE10226736A1 (de) * 2001-06-19 2003-01-02 Marquardt Gmbh Wasserzulauf für ein Haushaltsgerät
DE20319404U1 (de) * 2003-12-15 2005-03-24 Merlaku Kastriot Wassertemperatur-Steuer-Gerät für die Wasserleitung der Wasch- oder Spülmaschine
EP1902658A1 (fr) * 2006-09-19 2008-03-26 Silvano Gaiotto Dispositif pour le lavage économique et écologique de vêtements ou de vaisselle

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH576091A5 (en) * 1975-01-31 1976-05-31 Zug Verzinkerei Ag Crockery washing machine mixing valve - has mixing chamber thermostat regulating cold water valve discharge into chamber
DE3023355A1 (de) * 1980-06-21 1982-01-14 Willi Dipl.-Volksw. 7560 Gaggenau Bauer Wasserversorgungseinrichtung, insbesondere fuer haushaltsgeraete
DE10046347A1 (de) * 2000-09-19 2002-03-28 Bsh Bosch Siemens Hausgeraete Wasserzufuhreinrichtung für Haushaltgeräte
DE10057263A1 (de) * 2000-11-18 2002-05-23 Aeg Hausgeraete Gmbh Hausgerät mit einer Programmablaufsteuerung
DE10226736A1 (de) * 2001-06-19 2003-01-02 Marquardt Gmbh Wasserzulauf für ein Haushaltsgerät
DE20319404U1 (de) * 2003-12-15 2005-03-24 Merlaku Kastriot Wassertemperatur-Steuer-Gerät für die Wasserleitung der Wasch- oder Spülmaschine
EP1902658A1 (fr) * 2006-09-19 2008-03-26 Silvano Gaiotto Dispositif pour le lavage économique et écologique de vêtements ou de vaisselle

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