EP2440105A1 - Lave-vaisselle doté d'un dispositif adoucisseur d'eau et procédé de maintenance associé - Google Patents

Lave-vaisselle doté d'un dispositif adoucisseur d'eau et procédé de maintenance associé

Info

Publication number
EP2440105A1
EP2440105A1 EP10720175A EP10720175A EP2440105A1 EP 2440105 A1 EP2440105 A1 EP 2440105A1 EP 10720175 A EP10720175 A EP 10720175A EP 10720175 A EP10720175 A EP 10720175A EP 2440105 A1 EP2440105 A1 EP 2440105A1
Authority
EP
European Patent Office
Prior art keywords
hot water
cold water
ion exchanger
water supply
program
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP10720175A
Other languages
German (de)
English (en)
Other versions
EP2440105B1 (fr
Inventor
Roland Rieger
Michael Rosenbauer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete 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 Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP2440105A1 publication Critical patent/EP2440105A1/fr
Application granted granted Critical
Publication of EP2440105B1 publication Critical patent/EP2440105B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A47L15/4229—Water softening arrangements
    • 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
    • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0021—Regulation of operational steps within the washing processes, e.g. optimisation or improvement of operational steps depending from the detergent nature or from the condition of the crockery
    • 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

  • Dishwasher with a softening device and associated maintenance process
  • the present invention relates to a dishwasher, in particular a domestic dishwasher, having a water inlet device for receiving water, with a water softener chargeable by the water inlet device, which has an ion exchanger for softening and / or desalting of water and a maintenance device for waiting for the ion exchanger, and with a flow control device in which at least one wash program for controlling a wash cycle for cleaning items to be washed is stored.
  • 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 several 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, wherein the effort here can also include several dimensions, for example the energy requirement and / or the time required.
  • a sequence control device which automatically controls a rinse cycle according to a usually selectable rinse program.
  • the water required for carrying out rinses can be taken up in known dishwashers via a water inlet device, which can receive water, for example, from a water supply installed on the building side.
  • a washing program usually 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 and / or additives and brought to a favorable temperature for the respective program step.
  • modern dishwashers In order to be able to provide the water intended for rinsing with the intended cleaning and / or additives, modern dishwashers usually have automatic dosing devices. Furthermore, dishwashers can usually have an electric heater to bring the water intended for rinsing to the required temperatures.
  • 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. Furthermore, a typical washing program includes a subsequent drying step for drying the cleaned dishes.
  • rinsing programs in which one or more of these steps are hidden or missing. Also, rinse programs are possible in which one or more of these steps are repeated several times.
  • the water taken up with the water inlet device is first passed over a softening device for softening or decarbonating water before it is used for a rinsing or rinsing process.
  • the softening device comprises an ion exchanger for softening and / or desalting water and a maintenance device for servicing the ion exchanger.
  • the ion exchanger contains a resin with the property of sorbing the calcium ions or magnesium ions dissolved in the water, whereby the lime content of the Water is reduced.
  • a maintenance device is provided, which is designed for automatic maintenance of the ion exchanger.
  • the maintenance of the ion exchanger usually comprises a regeneration step and a purging step.
  • a regenerating brine previously prepared from water and regenerating salt, from the regenerating brine device is supplied to the ion exchanger for the servicing device, which essentially contains sodium chloride in aqueous solution.
  • the sodium ions contained in the regenerating brine (left out of the regenerating brine means) are sorbed by the resin instead of the calcium ions or magnesium ions, while the calcium ions or magnesium ions from the resin are mixed with the regenerating salt Brine go into solution.
  • the regenerating brine is usually prepared in a Regeneriersole owned the maintenance facility and kept ready until the beginning of the regeneration step. From the Regeneriersole empowered the regenerating brine is then passed at the beginning of the regeneration step in the ion exchanger. After expiration of a time required for the regeneration of the ion exchanger, the ion exchanger is flushed through with water absorbed by the water inlet device in a rinsing step, so as to dissipate the regenerating brine from the ion exchanger, so that the ion exchanger is again available for water softening available.
  • a disadvantage of the known dishwasher equipped with a softening device is that it no longer meets the current need for efficiency.
  • the object of the present invention is to provide a dishwashing machine equipped with a softening device, in particular a household dishwasher, which enables more efficient rinsing operations.
  • the water inlet device has a hot water inlet and a cold water inlet
  • the hot water inlet for receiving hot water from an external hot water supply and the cold water inlet are provided for receiving cold water from an external cold water supply
  • said the each selected wash program has at least one program step for washing items using hot water from the hot water supply
  • at least one program step for waiting the ion exchanger by means of the maintenance device using cold water from the cold water supply is provided at the expiration or after the expiry of this selected wash program, if maintenance of the ion exchanger is requested by the process control device.
  • Dishwashers and in particular household dishwashers are usually operated in locations where a hot water supply and a cold water supply are available.
  • the temperature of the hot water typical fixed hot water supplies can for example be in a range of about 40 0 C to 70 0 C.
  • the temperature of the cold water of typical fixed cold water supplies is in a range of about 5 ° C to 15 ° C.
  • a water inlet device which has a hot water inlet and a cold water inlet, that is equipped with a bithermic water connection, makes it possible to perform a rinse cycle for cleaning and / or drying of dishes in a more efficient manner.
  • rinsing programs for controlling a rinse are possible, which provide the implementation of individual program steps using hot water from an external hot water supply and the implementation of other program steps using cold water from an external cold water supply. That way, both compared to known dishwashers, which are provided - as usual especially in Europe - exclusively for connection to a cold water supply, as well as to known dishwashers, which are - as usual especially in North America - exclusively for connection to a hot water supply, a significant increase in efficiency be achieved.
  • hot water can be taken from the external water supply for this program step.
  • the hot water can be taken before or during the respective program step.
  • cold water can the external cold water supply. Again, the recording of the cold water before or during the respective program step can be done.
  • the dishwasher according to the invention realizes the advantages mentioned in that at least one washing program is stored in the process control device, which provides at least one program step for washing items using hot water from the hot water supply and at least one program step to maintain the ion exchanger using cold water from the cold water supply ,
  • the rinsing program can provide a regeneration step for the maintenance of the ion exchanger, in which the ion exchanger is exposed to a regenerating brine which is prepared using cold water from the cold water supply and regenerating agent from the maintenance device.
  • a regenerating brine which is prepared using cold water from the cold water supply and regenerating agent from the maintenance device.
  • a defined amount of water taken up from an external water supply is usually passed into a regenerating brine device, which is provided for the preparation and optionally for the storage of a regenerating brine.
  • the Regeneriersole worn is preferably part of the maintenance facility. It contains a regenerating agent, for example a regenerating salt, which can be refilled by a user.
  • the regenerant dissolves in it to the saturation limit. Although the solution process can be accelerated by a higher temperature of the water used for this purpose, but this would bring no significant advantage. As a rule, there is sufficient time between two regeneration steps to form the regenerating brine when cold water is used. Furthermore, the ion exchange processes provided during the regeneration of the ion exchanger do not require a higher temperature of the regenerating brine. Therefore, cold water from the cold water supply can be easily used to prepare the regenerating brine so as to reduce the demand for hot water from the hot water supply without causing a deterioration of the maintenance result.
  • the regeneration step comprises a substep in which the Regeneriersole issued the maintenance device cold water is supplied from the cold water supply, so as to press Regeneriersole from the Regeneriersole worn in the ion exchanger.
  • the ion exchanger is charged with regenerating brine from the regenerating brine means by forcing regenerating brine kept ready in the regenerating brine means by feeding further water to the regenerating means from the regenerating means into the ion exchanger.
  • water, which presses the regenerating brine from the regenerating device also water with low temperature, ie cold water can also be used without problems.
  • the use of cold water from the cold water supply in the sub-step for pressing the regenerating brine in the ion exchanger to a further saving of hot water from the hot water supply without this would create other problems.
  • the rinsing program provides a rinsing step for servicing the ion exchanger, in which the ion exchanger is rinsed with cold water from the cold water supply, so as to rinse Regeneriersole from the ion exchanger.
  • a flushing step is usually provided in which the ion exchanger is flushed through with water taken up by the water feed device so as to remove the regenerating brine.
  • the wash program provides a cleaning step for washing items to be washed, in which a loading of items to be washed with hot water from the hot water supply.
  • a cleaning step is used to thoroughly clean the dishes.
  • 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 provided for a cleaning step.
  • the rinse program provides a rinse step for rinsing items to be washed, in which a loading of items to be washed with hot water from the hot water supply.
  • a rinse step serves 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 with rinse aid.
  • Another object of the rinse step is to prepare a subsequent drying step.
  • the dishes are heated by hot water in particular, having for example a temperature of about 60 0 C to 75 ° C, is used during the rinsing step.
  • the rinsing program provides for a pre-rinsing step, in particular before the cleaning step is carried out, for rinsing items to be washed, in which a Loading of items to be washed with cold water from the cold water supply.
  • the pre-rinse step serves to remove coarse contaminants from the dishes to prepare for the cleaning step. In principle, no higher temperatures are required for this purpose. However, the removal of the coarser dirt by higher temperatures during the pre-rinse step can be accelerated in many cases. Thus, the required cleaning effect of the pre-rinse step can be achieved in a shorter time. In this case, the use of hot water from the external hot water supply, the electrical energy consumption of the dishwasher can be further reduced.
  • the rinsing program optionally provides an intermediate rinsing step, in particular after the cleaning step, for rinsing items to be washed, in which removal of detergent from the items to be washed after the cleaning step is followed by loading of items with cold water from the cold water supply.
  • An intermediate rinsing step serves in particular for the removal of detergent residues which adhere to the items to be washed after a cleaning step.
  • the hot water supply includes a hot water valve and the cold water inlet a cold water valve, the hot water valve and the cold water valve are independently controllable by the flow control device.
  • This makes it possible in a simple manner to carry out the intended by the wash program recording hot water from the hot water supply and provided by the wash program recording of cold water from the cold water supply.
  • the hot water valve is connected to an upstream end of a hot water valve. arranged hose and is adapted to be attached to a fitting of the external hot water supply, and / or that the cold water valve is disposed at an upstream end of a cold water hose and adapted to be attached to a fitting of the external cold water supply.
  • the hot water valve and / or the cold water valve can have, for example, connection threads which correspond to threads of domestic taps.
  • Such valves can be designed in particular as Aquastop valves.
  • the arrangement of the hot water valve and / or the cold water valve at the upstream end of the bithermic 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 a leak water sensor for detecting leak water, especially below the bottom assembly of the dishwasher, be assigned, so that the flow control device can close the valves when leakage water occurs during operation of the dishwasher ,
  • a downstream end of the hot water hose and a downstream end of the cold water hose via a connecting piece, in particular Y-connection piece, liquid-conducting, in particular with the aid of a supply hose is connected to a housing-fixed connection piece of the dishwasher.
  • a connecting piece in particular Y-connection piece
  • liquid-conducting in particular with the aid of a supply hose
  • the invention also relates to a method for servicing the ion exchanger of a dishwasher, in particular a domestic dishwasher, having a water inlet device for receiving water, with a water softening device that can be charged by the water inlet device, which contains an ion exchanger for softening and / or desalting water and a maintenance device for servicing the ion exchanger comprising, and with a flow control device for controlling the rinse cycle of at least one wash program for cleaning items to be washed, which is characterized in that the water inlet device with its hot water inlet for receiving hot water from an external hot water supply and with their cold water inlet for receiving from each selected wash program of the flow control is controlled by cold water from an external cold water supply such that the selected wash program at least one program step for washing dishes r use of hot water from the hot water supply and at the expiration or after the expiration of this selected wash program at least one program step to wait for the ion exchanger is performed by means of the maintenance device using cold water from the cold water supply, if a maintenance
  • Figure 1 is a schematic spatial representation of an advantageous embodiment of a dishwasher according to the invention
  • FIG. 2 is a schematic block diagram of the dishwasher of FIG.
  • FIG. 1 The first figure.
  • FIG. 3 shows a schematic functional diagram for explaining the function of the dishwasher of FIG. 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 required for the understanding of the invention and its advantageous developments. It goes without saying that the dishwasher according to the invention can comprise further parts and assemblies.
  • FIG. 1 shows a schematic spatial representation of an 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 formed.
  • 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.
  • the outer housing, in particular in the region of the side walls, the top wall, and / or rear wall of the washing compartment of the dishwasher 1 can be partially or completely omitted. This is particularly useful in fully integrated dishwashers, which are installed in the Einbaunische a kitchenette.
  • a schematically illustrated water inlet device 5 On the back of the dishwasher 1, a schematically illustrated water inlet device 5 is arranged. This has a hot water inlet 6, 7 and a cold water inlet 8, 9, wherein the hot water inlet 6, 7 for receiving hot water from an external hot water supply WH and the cold water inlet 8, 9 is provided for receiving cold water from an external cold water supply KH.
  • the hot water inlet 6, 7 comprises a controllable hot water valve 6 and the cold water inlet 8, 9 a controllable cold water valve 8.
  • the hot water valve 6 and cold water valve 8 are basically constructed identically.
  • both valves 6, 8 may each be designed as a solenoid valve.
  • the inlet sides of the valves 6, 8 are each designed so that they to fittings WA, KA a household hot water supply WH and cold water supply KH, for example, at the taps, can be attached.
  • the connection can be made in each case by means of a screw connection, a snap connection or the like.
  • Such valves 6, 8 are also known under the name Aquastop valve 6, 8.
  • these are closed when they are not activated, so that the dishwasher 1 is disconnected from the water supply in the off state. In this way, leakage of leakage water from the switched-off dishwasher 1 can be avoided in the event of a fault.
  • the inlet side of the hot water valve 6 is connected to a hot water tap of the hot water supply WH and the input side of the cold water valve 8 to a cold water tap of the cold water supply KH.
  • the outlet side of the hot water valve 6 is connected to a hot water hose 7 and the outlet side of the cold water valve 8 with a cold water hose 9, the downstream ends of the hot water hose 7 and the cold water hose 9 are connected to an input side of a connector 10, in particular Y-connector ,
  • a common inlet hose 1 1 connects for hot water and cold water, which in turn is connected to a connector 12 on the housing 4 of the dishwasher 1.
  • the hot water hose 7, the cold water hose 9 and / or the common inlet hose 1 1 may be formed as safety hoses with an inner water-carrying pressure hose and an outer Hüllschlauch, wherein between the pressure hose and Hüllschlauch each a leakage water channel can be provided for discharging any leak water occurring.
  • the connecting piece 10 may be formed such that the leakage water passages of the hot water hose 7, the cold water hose 9 and the common inlet hose 11 are connected to one another, so that leakage water, which occurs during operation of the dishwasher 1 in the region of the water inlet device 5, via the housing-fixed connection piece 12 into the interior of the dish- Dishwasher 1 is passed.
  • 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.
  • the connector on the device side in particular device internally, on the device side connector, in particular without external inlet hose, fixedly coupled or at this with is formed. This can in particular already be prepared from the outset from the factory.
  • the common inlet hose can possibly be saved.
  • the connecting piece 12 may be provided together with the connecting piece in the region of the base assembly on or in this.
  • a free flow path 13 Downstream of the housing-fixed connector 12, a free flow path 13 is provided.
  • 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 agents, gets back into the building water supply.
  • the dishwasher 1 has a softening device for softening or decarbonating water, which is provided for a rinsing or rinsing process.
  • the softening device 14, 15 comprises an ion exchanger 14 for softening and / or desalting water and a maintenance device 15 for servicing the ion exchanger 14.
  • the maintenance device 15 has a Regeneriersole issued 15, which with an accessible from the interior of the washing compartment 2 and closable opening to Filling a regenerating agent is equipped.
  • the dishwasher 1 also has components not shown in FIG. 1, which make it possible to supply hot water and / or cold water from the outlet free flow path 13 in the ion exchanger 14 and / or in the Regeneriersole adopted 15 to lead.
  • 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 dishwasher 1 also has a flow control device 19 for controlling the course of a washing program.
  • sequence control device 19 various rinse programs can be stored, which can be selected by an operator.
  • the flow control device 19 is arranged inside the door 3 of the washing container 2, but could also be arranged elsewhere in the dishwasher 1.
  • FIG. 2 shows a functional diagram of the dishwasher of Figure 1.
  • the hot water valve 6 and the cold water valve 8 are each connected to the flow control device 19, in particular via associated electrical signal or data lines DL that both valves 6, 8 individually, ie are specifically controlled.
  • This makes it possible to feed the washing container 2 of the dishwasher 1 via the connecting piece 10, the free flow path 13, a water distributor 20, the ion exchanger 14 and a drain 21 specifically with hot water and / or cold water.
  • a heating pump equipped with 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 water no longer needed to the outside via a wastewater connection piece 17.
  • both the heating function and the pumping function can be individually controlled by the sequence control device 19.
  • the flow control device 19 is also connected to the drain pump 24 for the control thereof.
  • the water distributor 20, which is part of the maintenance device 15, 20 for the maintenance of the ion exchanger 14, can be controlled by the sequence control device 19.
  • the water distributor 20 can be a water distributor 20 which has an inlet and two outlets. It makes it possible for hot water and / or cold water flowing in through the free flow path 13 to be fed to both the ion exchanger 14 and the regenerating brine device 15 via corresponding liquid lines or channels.
  • the water diverter 20 has a first switching state designated "A", in which the water flowing to it is conducted via a liquid connection line L to the ion exchanger 14.
  • the switching state "A” is assumed inter alia when water is supplied to the rinsing container 2, which is provided for applying wash ware. As a result, the water is softened by the ion exchanger 14 and / or desalted before it comes into contact with the dishes.
  • the water diverter 20 has a second switching state designated “B", in which the water flowing to it is led to the regenerating brine device 15.
  • Switching state “B” serves to supply water to the regenerating brine device 15 by a defined amount of regenerating brine from the regenerating brine device 15 to press out through a liquid connection line FL in the ion exchanger 14, so as to initiate a regeneration step.
  • Regenerative agent RM which is stored in the regenerating agent unit, forms tion 15, and the water supplied from the water divider gradually a further amount of regenerating brine, which can be used for later regeneration steps.
  • the regenerating brine contained in the ion exchanger 14 is flushed out of it by bringing the water splitter 20 into the switching state "A" and supplying it with water again they can be pumped out by means of the drain pump 24 to the outside.
  • the feeding of the dishwasher 1 with water is carried out as well as the control of the water switch 20, the heating pump 22 and the drain pump 24 and other not explained here devices of the dishwasher 1 in response to a wash program, which is stored in the flow control device 19.
  • a wash program which is stored in the flow control device 19.
  • at least one washing program is provided which can be selected specifically for efficient use of hot water from the hot water supply WH and cold water from the cold water supply KH.
  • FIG 3 shows a functional diagram for explaining the function and operation of the dishwasher 1 of Figures 1 and 2, which is designed according to an advantageous embodiment of the inventive design principle and the regeneration process according to the invention operates.
  • the course of a wash program SP is shown, which is intended to control a sequence of a wash cycle so that an efficient use of hot water from the hot water supply WH and cold water from the cold water supply KH is ensured.
  • FIG. 3 shows, on a common time axis t, the curves SWV, SKV, BAP and SWA 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 Cold water valve 8 of the dishwasher 1.
  • the switching state "0" corresponds in each case to 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 by " 0 "and the on state are symbolized by” 1 ".
  • the curve SWA shows the switching state of the water switch 20.
  • a first switching state in which incoming water is passed to the ion exchanger 14, with "A”
  • a second switching state in which incoming water is passed to the Regeneriersole worn 15, with "B” designated.
  • FIG. 3 shows, by way of example, a rinsing program SP, which in this chronological order comprises a pre-rinsing step VS, a cleaning step RS, an intermediate rinsing step ZS, a rinsing step KS and a drying step TS.
  • a rinsing program SP which in this chronological order comprises a pre-rinsing step VS, a cleaning step RS, an intermediate rinsing step ZS, a rinsing step KS and a drying step TS.
  • a rinsing program SP which in this chronological order comprises a pre-rinsing step VS, a cleaning step RS, an intermediate rinsing step ZS, a rinsing step KS and a drying step TS.
  • 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 hot water valve 6 is opened at the beginning of Vor Hughes suitss VS.
  • the water switch 20 is in this case in the switching state "A", so that the supplied hot water passes through the ion exchanger 14 in the washing container 2.
  • cold water from the cold water supply KH could be wholly or partially used during the pre-rinse step VS. This would lead to energy savings, but the pre-purging time would normally have to be extended in order to achieve a predetermined cleaning effect.
  • the cleaning step RS performed after the pre-rinsing step VS serves to thoroughly clean the items to be washed. For this purpose, the hot water valve 6 is opened again at the beginning of the cleaning step RS.
  • the water switch 20 is still in the switching state "A", so that the hot water supplied passes through the ion exchanger 14 in the washing container 2 until the washing container 2 is charged with a sufficient amount for the cleaning step RS amount of hot water from the hot water supply WH
  • the hot water valve 6 is closed again when the washing container 2 is supplied with a sufficient amount of softened hot water from the hot water supply WH for the cleaning step RS
  • 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 the intended, desired rinsing temperature of the cleaning step RS now contaminated hot water pumped by means of the drain pump 24 via the waste water connection piece 17 from the washing tank 2 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.
  • a high saving in electrical energy can be achieved, since the hot water from the hot water supply WH in many cases not at all, in other cases only to a small extent, must be reheated by the electric heater of the circulation pump 22 of the dishwasher 1 to the to achieve the desired minimum temperature.
  • the maintenance of the ion exchanger 14 is initiated from time to time as needed. After the washing container 2 is charged with a sufficient amount of hot water from the hot water supply WH for the cleaning step RS, a regeneration step RES is performed.
  • the water switch 20 is brought into the switching state "B.”
  • the cold water valve 8 is then opened to charge the regenerating brine device 15 with cold water from the cold water supply KH, whereby regenerating brine from the regenerating brine device 15 is forced into the ion exchanger 14 via a liquid connection line VL
  • the cold water valve 8 is closed again and the water splitter 20 is returned to the switching state "A”.
  • the cold water introduced into the regeneration brine device 15 during the regeneration step RES remains there until a subsequent regeneration step and until then forms further regenerating brine by dissolution of the regenerating agent RM.
  • the ion exchanger 14 is cleaned of consumed regenerating brine in a time-sequential rinsing step DS.
  • the cold water valve 8 is temporarily opened when the water switch 20 is in the switching state "A" so that cold water flows through the ion exchanger 14.
  • the regenerating brine which reaches the washing container 2 is subsequently pumped out through the drain pump 24.
  • the now performed intermediate rinse step ZS for removing detergent from the items to be washed after the cleaning step RS also provides for a loading of the washing container 2 with hot water from the hot water supply WH, to be able to apply hot water to the ware can.
  • the hot water valve 6 is opened until the washing container 2 is charged with a sufficient amount of hot water for the intermediate rinse step ZS.
  • This hot water is circulated by means of the circulation pump 22 for a predetermined time, which as a rule can be omitted a connection of the heater. Thereafter, the now contaminated cold water is pumped out by means of the drain pump 24 to the outside.
  • cold water from the cold water supply KH could be wholly or partially used during the intermediate rinse step ZS. This would lead to energy savings, but the pre-purging time would normally have to be extended in order to achieve a predetermined cleaning effect. Possibly. However, such a tartauer suits also completely eliminated.
  • 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.
  • the 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. Although such solutes can be reduced by the intended softening device, but not completely removed. Therefore 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.
  • the dishes are heated by hot water in particular, having for example a temperature of about 60 0 C to 75 ° C, is used during the rinsing step KS.
  • hot water in particular, having for example a temperature of about 60 0 C to 75 ° C, is used during the rinsing step KS.
  • 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.
  • a heater in the circulation pump 22 may also be appropriate to provide a heater additionally or independently thereof at another suitable location in the liquid circuit of the dishwasher.
  • the dishwasher has a hot water connection and at the same time a cold water connection, ie a bithermal water connection or two inlet side water connections for the inlet of water with different temperatures.
  • a cold water connection ie a bithermal water connection or two inlet side water connections for the inlet of water with different temperatures.
  • These two water connections are each separately with a controllable valve, in particular an aquastop valve, controlled, in particular open and closed again.
  • a rinsing program is provided in which, for pre-rinsing, for cleaning and for rinsing, hot water from an external hot water supply system, in particular from a thermal water supply system, is advantageously provided. mix solar system, is used.
  • the brine is sent with cold water from a cold water supply in the ion exchanger, in particular pressed in a regeneration process. Likewise, the flushing of the ion exchanger takes place after the regeneration process with cold water.
  • This program guide does not unnecessarily use warm water. There is an energy saving.
  • 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 from fossil fuel carriers, are particularly favorable in terms of energy and / or use only largely CO 2 -neutral energy carriers.
  • 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

Landscapes

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

Abstract

L'invention concerne un lave-vaisselle (1), notamment un lave-vaisselle ménager, comportant un dispositif d'alimentation en eau (5) recevant de l'eau, un dispositif adoucisseur d'eau (14,15,20) qui peut être rempli par le dispositif d'alimentation en eau (5) et qui comporte un échangeur d'ions (14) destiné à adoucir et/ou dessaler l'eau et un dispositif de maintenance (15,20) destiné à la maintenance de l'échangeur d'ions (14), ainsi qu'un dispositif de programmation (19) dans lequel est mémorisé au moins un programme de lavage (SP) pour la commande d'un cycle de lavage de la vaisselle. Selon l'invention, le dispositif d'alimentation en eau (5) comporte une conduite d'arrivée d'eau chaude (6,7) et une conduite d'arrivée d'eau froide (8,9), la conduite d'arrivée d'eau chaude (6,7) recevant l'eau chaude d'une source externe d'alimentation en eau chaude (WH) et la conduite d'arrivée d'eau froide (8,9) recevant l'eau froide d'une source externe d'alimentation en eau froide (KH). Le programme de lavage sélectionné (SP) comporte au moins une étape (VS,RS,ZS,KS) de lavage de la vaisselle, qui utilise l'eau chaude de l'alimentation en eau chaude (WH), pendant ou après l'exécution de ce programme sélectionné (SP) étant prévue au moins une étape (RES,DS) pour la maintenance de l'échangeur d'ions (14) au moyen du dispositif de maintenance (15,20) avec utilisation de l'eau froide de l'alimentation en eau froide (KH), si une maintenance de l'échangeur d'ions (14) est exigée par le dispositif de programmation (19).
EP10720175.8A 2009-06-10 2010-06-01 Lave-vaisselle doté d'un dispositif adoucisseur d'eau et procédé de maintenance associé Active EP2440105B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910026904 DE102009026904A1 (de) 2009-06-10 2009-06-10 Geschirrspülmaschine mit einer Enthärtungseinrichtung sowie zugehöriges Wartungsverfahren
PCT/EP2010/057593 WO2010142564A1 (fr) 2009-06-10 2010-06-01 Lave-vaisselle doté d'un dispositif adoucisseur d'eau et procédé de maintenance associé

Publications (2)

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EP2440105A1 true EP2440105A1 (fr) 2012-04-18
EP2440105B1 EP2440105B1 (fr) 2013-08-14

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EP (1) EP2440105B1 (fr)
DE (1) DE102009026904A1 (fr)
WO (1) WO2010142564A1 (fr)

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CN111685679B (zh) * 2020-04-30 2022-04-26 浙江三花智能控制股份有限公司 洗碗机的控制方法

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CH574732A5 (en) * 1975-01-31 1976-04-30 Zug Verzinkerei Ag Dish washing method and machine - drying air is contacted with cold water, fed in by water feed system
US4645595A (en) * 1984-11-23 1987-02-24 General Electric Company Water softening system particularly for individual appliances
DE3921422A1 (de) * 1989-06-29 1991-01-10 Bosch Siemens Hausgeraete Verfahren zum betrieb einer programmgesteuerten geschirrspuelmaschine
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
DE10222215A1 (de) * 2002-05-16 2003-12-04 Electrolux Home Prod Corp Verfahren zum Betreiben einer Geschirrspülmaschine
WO2005060817A1 (fr) * 2003-12-22 2005-07-07 BSH Bosch und Siemens Hausgeräte GmbH Lave-vaisselle comportant un systeme de detartrage
KR100857460B1 (ko) * 2006-03-21 2008-11-06 선남규 자동 재생이 가능한 연수 세탁기
ATE485756T1 (de) * 2006-04-05 2010-11-15 Electrolux Home Prod Corp Geschirrspülmachine mit verbessertem regenerierungssystem zur wasserentkalkung
ITTV20060161A1 (it) * 2006-09-19 2008-03-20 Silvano Gaiotto Dispositivo per un lavaggio economico ed ecologico degli indumenti o delle stoviglie.
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DE102009026904A1 (de) 2010-12-16
WO2010142564A1 (fr) 2010-12-16

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