EP2557980A1 - Dishwasher with fault identification - Google Patents
Dishwasher with fault identificationInfo
- Publication number
- EP2557980A1 EP2557980A1 EP11710465A EP11710465A EP2557980A1 EP 2557980 A1 EP2557980 A1 EP 2557980A1 EP 11710465 A EP11710465 A EP 11710465A EP 11710465 A EP11710465 A EP 11710465A EP 2557980 A1 EP2557980 A1 EP 2557980A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- water
- control device
- dishwasher
- detection
- rinsing chamber
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 206
- 238000012360 testing method Methods 0.000 claims abstract description 54
- 238000001514 detection method Methods 0.000 claims abstract description 37
- 238000004140 cleaning Methods 0.000 claims abstract description 15
- 230000007257 malfunction Effects 0.000 claims description 29
- 238000005406 washing Methods 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 5
- 238000004851 dishwashing Methods 0.000 abstract description 9
- 230000001105 regulatory effect Effects 0.000 abstract description 4
- 230000003134 recirculating effect Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 12
- 238000001035 drying Methods 0.000 description 10
- 238000011161 development Methods 0.000 description 9
- 230000018109 developmental process Effects 0.000 description 9
- 239000010865 sewage Substances 0.000 description 7
- 238000005507 spraying Methods 0.000 description 7
- 238000011010 flushing procedure Methods 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 4
- 239000008237 rinsing water Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- 239000012459 cleaning agent Substances 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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
- A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
- A47L15/0049—Detection or prevention of malfunction, including accident prevention
-
- 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
-
- 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
- A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
- A47L2401/06—Water supply, circulation or discharge information
-
- 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
- A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
- A47L2401/08—Drain or recirculation pump parameters, e.g. pump rotational speed or current absorbed by the motor
-
- 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
- A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
- A47L2501/04—Water pressure or flow rate
-
- 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
- A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
- A47L2501/05—Drain or recirculation pump, e.g. regulation of the pump rotational speed or flow direction
-
- 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
- A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
- A47L2501/26—Indication or alarm to the controlling device or to the user
Definitions
- the present invention relates to a dishwasher, in particular domestic dishwasher, with a control device for carrying out at least one rinse for cleaning items to be washed, with a rinsing chamber for receiving the items to be washed during the rinse, with a water inlet device, which for filling the rinsing chamber with water with a external water supply device is connectable, wherein the water inlet device has an openable by the control device and closable inlet valve, and with an adjustable by the control device, in particular controllable or controllable, circulating pump for circulating the water located in the washing chamber.
- the object of the present invention is to provide a dishwasher, in particular a domestic dishwasher, in which the filling of the rinsing chamber with water is improved.
- control device is designed to carry out a recognition sequence for detecting a malfunction of the water inlet device, which includes a test filling, in which the inlet valve is opened for a predetermined time preset value corresponding duration, the At least one detection of at least one operating parameter corresponding to the amount of water in the rinsing chamber of the current circulating pump takes place at the end of the test filling phase, and wherein the control device determines a water flow flowing into the rinsing chamber during the test filling phase from the detected operating parameter and for comparing the determined water flow is designed with a planned minimum water flow.
- the control device of the dishwasher is designed for controlling and / or regulating effect on actuators of the dishwasher and thus allows an automatic execution of rinsing processes, also called rinse or Spüllauf, in which the items can be cleaned using water.
- the control device can be designed as so-called sequence control, in particular as electronic sequence control.
- At least one wash program for performing or controlling a wash cycle is stored in the control device.
- a plurality of rinsing programs can be provided, one of which can each be selected and started by the operator. This makes it possible to adjust the sequence of a wash cycle, in particular to the load, to the type of loading, to the degree of soiling of the items to be washed and / or to the desired duration of the wash cycle.
- the stored rinsing programs can preferably be designed such that each rinse controlled by them in particular at least one Vorêt- gang for pre-cleaning items, at least one cleaning cycle for thorough cleaning of items, especially with the help of one or more cleaning agents, at least one intermediate rinse for Removing contaminated and / or detergent-added water from the rinse, at least one rinse cycle to avoid stains on the items to be washed and / or to prepare a drying step, and / or at least one drying cycle for drying the items to be washed.
- Rinse cycle, cleaning cycle, intermediate rinse cycle and rinse cycle are referred to as water-conducting partial rinses, since during their implementation, the items to be cleaned are treated with water. During the drying cycle, the use of water is usually not provided.
- the treatment of the items to be washed with water takes place in a substantially complete washing chamber of the dishwasher, in particular in a washing container having a closable by a door loading opening.
- the rinsing chamber is associated with a water inlet device, which is designed such that it can be connected to an external water supply device, in particular to a water supply device installed on the building side, so that the water required for carrying out rinsing cycles can be taken up and filled into the rinsing chamber.
- the water inlet device can be connected, for example, to a tap or to a so-called angle valve of the external water supply device.
- the water entering the rinsing chamber via the water feed device is also referred to as feed water.
- the water inlet device has an inlet valve, which can be opened and closed by the control device, so that the intake of water can be carried out automatically.
- the inlet valve may in particular be a solenoid valve which can only be brought into an open position and into a closed position, which simplifies the construction of the dishwasher.
- the rinsing chamber is associated with a circulating pump for circulating the filled water, which makes it possible to remove the water in the rinsing chamber, e.g. to remove from a collection device for water and apply to the washware via a spray chamber associated with the spray system.
- the circulating pump can be controlled and / or regulated by the control device of the dishwasher.
- the water circulated in the rinsing chamber can be enriched with cleaning agents, with cleaning aids, such as rinse aid and / or with dirt that has been removed from the items to be washed, and is also referred to as rinsing water, rinsing liquor or rinsing liquid.
- the control device of the dishwasher is designed so that at least one detection sequence for detecting a malfunction of the water supply device, preferably automatically, is feasible.
- a malfunction is understood to be a fault in which the filling of the rinsing chamber is no longer guaranteed with an intended set amount of water.
- the recognition sequence comprises a test filling phase during which the supply valve is opened in a time-controlled manner by the control device, the opening duration corresponding to a predetermined time setting value.
- the timer value can be stored in the control device or determined by the controller according to a stored algorithm.
- detection, in particular measurement, of at least one operating parameter corresponding to the amount of water in the rinsing chamber of the circulating pump switched on at least during the performance of the detection, in particular measurement takes place by means of a detection device, in particular a sensor.
- the detection device is connected to or integrated in the control device such that the result of the detection, which represents the amount of water present in the rinsing chamber, can be processed by the control device.
- the control device is designed so that that during the test filling phase flowing into the rinsing chamber water flow can be determined taking into account the detection result.
- the water volume flow or water throughput through the water inlet device of the dishwasher is a measure of the amount of water which flows into the rinsing chamber per unit time. If it can be assumed that the rinsing container is substantially free of water at the beginning of the test feed phase, the water flow prevailing during the test feed phase can be determined particularly simply by measuring the amount of water measured at the end of the test feed phase by the time limit for the opening duration of the feed valve divided or divided.
- the thus determined water flow is then compared by the control device with a planned minimum water flow. If the determined water flow is below the minimum water flow, then it can be concluded that a malfunction of the water inlet device.
- the value of the minimum water flow can be set in advance and stored as a fixed value in the control device or depending on the situation, z. B. depending on a selected wash program, are set by the controller. The value of the minimum water flow can be set so that the functionality of the dishwasher is barely guaranteed when it is reached. For this purpose, suitable experiments can be carried out.
- a faulty water supply can be detected, which is based on a connection of the dishwasher to an external water supply device which is unsuitable for this purpose, for example because it has too low a pressure.
- a faulty water supply can be detected, which is due to a malfunction of components of the external water supply device. For example, malfunctions due to dirty and / or calcified lines, pumps, faucets, angle valves or because of closed faucets or angle valves can be detected.
- a malfunction can be detected which is due to a disturbed component of the itself, for example, a defective and / or clogged inlet valve or a kinked connection hose, goes back.
- a significant advantage of the dishwasher according to the invention is its simplicity.
- a direct measurement of the water flow can be dispensed with.
- an impeller counter which is frequently used in the area of the water feed device in conventional dishwashers, without any restrictions regarding the recognition of malfunctions of the water feed device being accepted.
- an output of a message which signals a user to detect a malfunction.
- the user is enabled to react early to the malfunction.
- he can fix even simpler mistakes, such as closed taps or the like, even.
- he himself can determine whether the cause of the malfunction lies in the area of the external water supply device or in the area of the dishwasher itself.
- he can specifically request the maintenance personnel responsible for the respective area. Overall, it can be prevented so that maintenance personnel unnecessary, or that unreasonable maintenance personnel is requested.
- the notification takes place via an output device, which may comprise acoustic and / or visual output means.
- Optical output means may include lamps, light-emitting diodes, alphanumeric and / or graphic output means.
- Acoustic output means may include, for example, buzzer and / or speakers.
- an automatic shutdown of the circulation pump is provided upon detection of a malfunction. Damage to the circulating pump due to dryness can be safely avoided in this way.
- the recognition sequence can be carried out automatically during the rinse cycle, preferably at its beginning. This ensures that the function of the water inlet device is checked every time a rinse cycle is carried out. As a result, errors can be detected early, which occur only in the course of the use of the dishwasher after some time.
- the test filling phase is preferably integrated into a filling phase of the rinse cycle for receiving a predetermined amount of water.
- a filling phase of the rinse cycle for receiving a predetermined amount of water.
- the water taken up during the test feed phase may form part of the total amount to be consumed during the fill phase.
- the water consumption of a dishwasher with test feed phase can be maintained at the level of a dishwasher without test feed phase.
- an automatic termination of the rinse cycle is provided upon detection of a malfunction.
- the performance of a wash cycle with too small amounts of water can be prevented during its individual phases.
- an insufficient rinsing and / or drying result as well as damage to the dishwasher, for example due to overheating of a heating device of the dishwashing machine, can be prevented.
- a Abpumpphase can be provided before the test filling, in which by means of a drain pump, a pumping out of the water located in the washing chamber.
- a drain pump a pumping out of the water located in the washing chamber.
- the detection device in particular a sensor
- at least one additional detection, in particular measurement, of the operating parameter of the current circulating pump corresponding to the amount of water present in the rinsing chamber.
- the operating parameter preferably represents the electrical power consumption of the circulating pump.
- the pumps of dishwashers with electric motors such as brushless DC motors (BLDC motor), driven.
- each circulating pump correlates directly with the amount of water in the washing chamber, so that in this way the amount of water is reliably detected.
- the electrical power can be relatively easily, for example by a current measurement, detected.
- the circulation pump of a dishwasher is in any case associated with a sensor for detecting its power consumption, for example in order to be able to set the delivery quantity, so that the error detection can be carried out while largely using already existing components.
- the invention also relates to a method for detecting a malfunction in a dishwasher, which comprises a control device for performing at least one rinse for cleaning items to be washed, a rinsing chamber for receiving the items to be washed during the rinse, a water inlet device, which for filling the rinsing chamber with water an external water supply device is connectable, wherein the water inlet device by the Control device has open and closable inlet valve, and adjustable by the control device, in particular controllable or controllable, circulating pump for circulating the water located in the washing chamber.
- At least one recognition sequence or at least one recognition process for detecting a malfunction of the water inlet device is carried out by means of the control device, which comprises a test filling, in which the inlet valve is opened for a predetermined time preset value corresponding duration, at the end of the test filling phase by means of a detection device detection , In particular by means of a sensor, a measurement, one of the one in the rinsing chamber amount of water corresponding operating parameter of the current circulation pump is performed, and wherein by means of the control during the strigüllphase flowing into the rinsing water flow from the detected, in particular measured operating parameters determined and a proposed minimum water flow is compared.
- the inventive method allows a simple, fast and reliable detection of malfunction of the water inlet device and is characterized by low demands on the structural design of the dishwasher.
- Figure 1 is an advantageous embodiment of an inventive
- Figure 2 is a block diagram of the household dishwasher of Figure 1
- FIG. 3 shows an exemplary time sequence of an initial section of a wash cycle for the household dishwasher of FIGS. 1 and 2.
- FIG. 1 shows an advantageous exemplary embodiment of a household dishwasher 1 according to the invention in a schematic side view.
- the dishwasher 1 has a control device 2, in which at least one wash program for controlling a wash cycle for washing dishes, in particular dishes, is deposited.
- a plurality of washing programs are stored, so that, by selecting a suitable washing program, the sequence of a wash cycle controlled by the control device 2 can be adjusted, for example, to the loading amount, to the loading type, to the degree of soiling of the ware and / or to the desired duration of the wash cycle to be carried out. can be fitted.
- the control device 2 is associated with an operating device 3, which allows an operator of the dishwasher 1 to call one of the washing programs and thereby start.
- control device 2 is associated with an output device 4, which allows the output of messages to the operator.
- the output device 4 may comprise indicator lamps, light-emitting diodes, an alpha-numeric display and / or a graphic display for outputting optical messages.
- the output device 4 can optionally have a buzzer, a loudspeaker and / or the like for the output of acoustic messages.
- the dishwasher 1 further comprises a rinsing container 5, which can be closed by a door 6, so that a closed rinsing chamber 7 is formed for rinsing dishes. If appropriate, the rinsing container 5 can be arranged inside a housing 8 of the dishwasher 1.
- the housing 8 is not required and may be omitted altogether at the top.
- the door 6 is shown in its closed position.
- the door 6 can be brought into an open position by pivoting about an axis arranged perpendicular to the plane of the drawing, in which it is aligned substantially horizontally and allows the introduction or removal of items to be washed.
- the operating device 3 is arranged in an easy to use manner at an upper portion of the door 6.
- the output device 4 is also arranged on the upper portion of the door 6, so that optical messages are clearly visible and / or any audible messages are easily audible.
- the control device 2 is also positioned there, so that the required signal connections between the operating device 3, the output device 4 and the control device 2 can be kept short. In principle, however, it is possible to arrange the operating device 3, the output device 4 and / or the control device 2 elsewhere. In particular, according to an alternative embodiment variant, the control device may possibly also be accommodated in a base module below the flushing container.
- the control device 2 could also be designed decentralized, which is understood to include spatially separated components, which are connected via communication means such that they can cooperate.
- the dishwasher 1 has an upper for positioning dishes
- the upper dish rack 9 is arranged on extension rails 1 1, which are each attached to opposite, extending in the depth direction of the washing compartment side walls of the washing compartment 5.
- the crockery basket 9 can be moved out of the washing container 5 with the door 6 open by means of the extension rails 1 1, which facilitates the loading and unloading of the upper crockery basket 9.
- the lower dish rack 10 is arranged in an analogous manner on extension rails 12 and can be moved out on the door 6 in its horizontal open position.
- the one or more washing programs stored in the control device 2 can each provide a plurality of partial wash cycles, for example at least one pre-wash cycle, at least one wash cycle, at least one intermediate wash cycle, at least one rinse cycle and / or at least one drying cycle.
- pre-wash cycle, cleaning cycle, intermediate rinse cycle and rinse cycle are referred to as water-carrying partial rinses, since during their implementation, the items to be washed positioned in the rinsing chamber 7 are treated with rinse water W.
- a treatment of the dishes with rinse water W is usually not provided.
- water W is used, which is supplied by an external water supply device WH, in particular a building-side water pipe, which is e.g. connected to a public drinking water supply network, and can be filled into the rinsing chamber 7.
- an external water supply device WH in particular a building-side water pipe, which is e.g. connected to a public drinking water supply network, and can be filled into the rinsing chamber 7.
- fresh water W is introduced at the beginning of each water-conducting partial rinse cycle to form rinse water W, which is then discharged to the end of the respective rinse cycle to an external sanitation device AR as wastewater W " store a storage container, not shown, and refill in the rinsing chamber 7 in a later partial rinse cycle.
- the dishwasher 1 of FIG. 1 comprises a water inlet device 13, which is provided for connection to the external water supply device WH.
- the external water supply device WH may be a water tap WH of a building-side water installation which supplies pressurized water W.
- the water inlet device 13 comprises a connection piece 14, which is provided for connection to the water tap WH.
- the connection can be made for example via a threaded arrangement, a bayonet arrangement or the like.
- Downstream of the connecting piece 14 is a connecting line, in particular a connecting tube 15 is provided, which is preferably designed to be flexible.
- the downstream end of the connection tube 15 is connected to a housing-fixed connection piece 16.
- a supply line 17 Downstream of the housing-fixed connecting piece 16, a supply line 17 is provided, which is connected to an input side of a switchable by means of the control device 2 inlet valve 18. An exit side of the inlet valve 18 in turn is connected to a water inlet 19 of the rinsing chamber 7. In this way it is possible, by means of the water inlet device 13 to direct water W into the interior of the washing chamber 7 of the dishwasher 1.
- the inlet valve 18 may be formed as a switchable solenoid valve, which has only an open position and a closed position.
- a water treatment plant not shown, for example, a water softening system may be provided in the supply line 17, a water treatment plant, not shown, for example, a water softening system may be provided.
- the device-side inlet valve 18 may also be provided between the fitting 14 and the faucet WH or between the faucet and the input side end of the water connection line, omitting the fitting 14, an external inlet valve, in particular a so-called water stop valve, preferably by means the control device switchable, in particular shut-off and apparently.
- the water W which has reached the rinsing chamber 7 via the water inlet 19, arrives in a collecting device 21 formed on a base 20 of the rinsing container 5, which collecting device 21 may preferably be designed as a collection pot 21.
- An input side of a circulation pump 22 is liquid-conducting connected to the collection pot 21.
- an output side of the circulation pump 22 is connected to a spraying device 23, 24, which makes it possible to apply the rinsing water W introduced into the rinsing chamber 7.
- the spraying device 23, 24 comprises an upper rotatable spraying arm 23 and a lower rotatable spraying arm 24.
- stationary spraying elements and / or other movable spraying devices could be provided.
- the circulating pump 22 is a detection device 25, in particular a sensor associated with a detected operating parameters, which represents the electrical power consumption of the circulation pump 22.
- the operating parameter can be, for example, the electrical current consumption of the circulation pump 22, from which the electrical power consumption can be easily derived.
- the dishwasher 1 in a conventional manner to a metering device 26, which makes it possible to put the flushing water W located in the washing chamber 7 with cleaning agents and / or cleaning aids to improve the cleaning effect and / or the drying effect of a wash cycle.
- the drainage device 27 serves to pump out rinse water W no longer needed as wastewater W "out of the rinsing chamber 7.
- the drainage device 27 comprises a drain pump 28 whose inlet side communicates with the collecting pot 21
- the outlet side of the drain pump 28, on the other hand, is connected to a connecting line 29, the downstream end of which is connected to a housing-fixed connection 30 of the dishwasher 1.
- Attached to an outlet of the connection 30 fixed to the housing is a waste water line, in particular a waste water hose 31
- a connecting piece 32 which is provided for connecting the drainage device 27 to a sewage disposal device AR
- the sewage disposal device AR can be a sewage pipe of a building-side water be installation.
- the connection between the connecting piece 32 and the sewage pipe can be designed as a screw connection, as a bayonet connection, as a plug connection or the like.
- FIG. 2 shows a block diagram of the household dishwasher 1 of Figure 1, wherein in particular the control and communication concept is shown.
- a signal line 33 is provided, which connects the operating device 3 to the control device 2 such that operating commands of an operator can be transmitted from the operating device 3 to the control device 2.
- a signal line 34 is provided, which connects the control device 2 to the output device 4, so that by the control device 2 ready information about the output device 4 and can be output there to the operator.
- a control line 35 is provided, which connects the control device 2 with the switchable inlet valve 18 such that the inlet valve 18 can be closed or opened by the control device 2. In this way, the filling of water W in the washing chamber 7 can be controlled by the control device 2.
- a further control line 36 connects the control device 2 to the circulation pump 22. In this way, the circulation of rinse water W in the rinsing chamber 7 can also be set, in particular controlled or regulated, by the control device 2.
- a signal line 37 is provided, which connects the Rundlauftechnikwachungs- unit 25 with the control device 2.
- the signal line 37 makes it possible to transmit information generated by the detection device 25 regarding the power consumption of the circulation pump 22 to the control device 2.
- a control line 38 is provided, which connects the control device 2 with the drain pump 28, so that the drain pump 28 by the control device 2 switchable, in particular off and on, is.
- FIG. 3 shows the implementation of an exemplary detection sequence TF, AB for detecting a malfunction of the water inlet device 13 of the dishwasher 1 of FIGS. 1 and 2, which is automatically performed by the control device 2 at the beginning of a rinse cycle SG.
- the first water-conducting partial rinse cycle of the rinse cycle SG is, for example, a pre-rinse cycle VG, of which an initial phase is shown. Additional water-bearing partial rinses can be connected to the pre-rinse cycle, it being possible, for example, to provide a cleaning cycle, an intermediate rinse cycle and a final rinse cycle in this sequence. This can then be followed by a drying cycle.
- a solid curve Z18 shows the operating state Z18 of the inlet valve 18, provided that there is a malfunction of the water inlet device 13, and a dotted curve Z18 'the operating state Z18' of the inlet valve 18, if the water inlet device 13 has a correct function.
- the inlet valve 18 can in each case occupy an operating state "0", in which it is closed, and assume an operating state "1" at which it is open.
- a solid curve P shows the electrical power consumption P of the circulation pump 22 in the event of a malfunction and a dotted curve P 'the electrical power consumption P' of the circulation pump 22 with undisturbed function of the water supply device 13.
- a solid curve WS which represents the water volume flow WS , which adjusts itself to undisturbed operation of the water inlet device 13, and a dotted curve WS ', which represents the water flow WS', which sets in the event of malfunctioning of the water supply device 13.
- a curve Z28 represents the operating state Z28 of the drain pump 28, wherein the operating state "0" with the drain pump 28 switched off and the operating state "1" with the drain pump 28 switched on are assumed.
- the recognition sequence TF, AB comprises a test filling phase TF, during which the inlet valve 18 is open for a duration dependent on a time value ZV, so that water W is introduced into the rinsing chamber 7 via the inlet valve 18. From the amount of water W, which is taken during the test filling phase TF, and the time value ZV can then be determined during the test feed phase TF resulting water flow WS.
- the test feed phase TF is integrated into a filling phase F, which serves to cover the demand for water W of the pre-wash cycle VG.
- the water W taken up during the test filling phase TF thus forms part of the total amount of water W received during the filling phase F, which is intended for the pre-wash cycle VG. In this way, the performance of the test feed phase TF does not lead to any increase in the water consumption of the dishwasher 1.
- the inlet valve 18 is continuously opened during the test filling phase TF, so that the duration of the test filling phase TF corresponds precisely to the opening time of the inlet valve 18.
- it could be provided as part of the test filling TF a stepwise or stepwise, ie, portions of the water W, wherein the inlet valve 18 is opened and closed several times, ie is operated clocked.
- the sum of the individual opening times of the inlet valve 18 corresponds to the time value ZV, so that in this case too, the water flow WS can be determined from the quantity of water W received and the time value ZV.
- a detection in particular a measurement M1 of the electrical power consumption P of the circulating pump 22, which is a measure of the amount of water W present in the flushing chamber 7 at this time, now takes place by means of the detection device 25, in particular a sensor , However, it could also be measured another operating parameters of the circulation pump, which correlates with the said amount of water W.
- the detected, in particular measured, amount of water W corresponds to the filled quantity W.
- the water flow WS which has flowed during the test feed phase TF can now be determined by the control device 2 be divided by the determined by means of the detection, in particular measurement M1 amount of inflowing water W by the timing value ZV.
- a Abpumpphase AB is provided in the embodiment, while the possibly located in the washing chamber 7 water W is pumped off automatically by means of the drain pump 28.
- the pumping phase is not absolutely necessary.
- a further detection, in particular measurement M2 can be carried out, from which the amount of water W located at the start of the test inflow phase TF in the rinsing chamber 7 is determined.
- the relative amount of water W filled during the test feed phase TF can then be determined, from which the water flow WS can then be determined as described. It was on This point noted that the circulating pump 22 could be turned off outside the implementation of the intended acquisitions, in particular measurements M1 and possibly M2.
- the determined water flow WS is then compared with a minimum water flow MWS. In FIG. 3, the determined water flow WS is below the minimum water flow MWS, from which a malfunction of the water inlet device 13 is concluded. Then, a message is output via the output device 4, which is signaled to a user, the occurrence of a malfunction of the water inlet device.
- the display device can be formed in particular by, for example, an optical or electrical display element, preferably an optical fiber or a light-emitting diode (LED), in or on the faucet and / or in or on the water connection line.
- the display element is connected via an electrical or optical line to the control device of the dishwasher.
- the rinse SG is stopped, the circulation pump 22 is turned off and the inlet valve 18 is closed.
- the execution of the wash cycle SG can be prevented with too small amounts of water during its individual phases.
- an insufficient rinsing and / or drying result as well as damage to the dishwasher 1, for example due to overheating of a heating device of the dishwasher, can be prevented.
- the sequence of the wash cycle SG is now briefly explained in trouble-free operation of the water inlet device 13.
- a water flow WS ' which lies above the intended minimum water flow MWS, results in this case during the test inflow phase TF. Therefore, it is closed to a trouble-free water supply device 13, so that the output of a fault message can be omitted.
- the rinse SG can be continued as usual.
- the pre-rinse VG as well as its filling sequence F is continued after the end of the test feed phase.
- the inlet valve 18 can remain in the open state, which is illustrated by the curve Z18 '.
- the circulation pump 22 can continue to be operated, its power consumption P 'increasing as the water flow WS' continues to increase.
- the following method for detecting and reporting a faulty water supply may be appropriate:
- the inlet valve can be opened to receive water in the dishwasher.
- the circulation pump can start. In this case, the volume flow is checked in a certain time window, wherein the load state of the circulating pump is detected by means of the converter electronics of the electric motor of the circulation pump. If a defined limit is not reached, it is possible to conclude that the filling process has ended incorrectly. This can be by means of one or more LEDs in or on the water tap ( "Wasserhahn- LED") are indicated. Furthermore, it is conceivable even a termination of the rinsing program.
- the advantages of the invention are, in particular, that the user can be given the information of a present error in the water supply even in devices without impeller or other flow meter in the water supply device. Thus, he has the opportunity to remedy this problem, the cause of which may in particular be a closed faucet or a calcified angle valve itself. A service call may not be necessary. Furthermore, it can be ruled out that a complete rinse or rinse without water is performed.
Landscapes
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Washing And Drying Of Tableware (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL11710465T PL2557980T3 (en) | 2010-04-14 | 2011-03-21 | Dishwasher with fault identification |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010027756A DE102010027756A1 (en) | 2010-04-14 | 2010-04-14 | Dishwasher with fault detection |
PCT/EP2011/054182 WO2011128176A1 (en) | 2010-04-14 | 2011-03-21 | Dishwasher with fault identification |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2557980A1 true EP2557980A1 (en) | 2013-02-20 |
EP2557980B1 EP2557980B1 (en) | 2014-03-05 |
Family
ID=44486846
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11710465.3A Active EP2557980B1 (en) | 2010-04-14 | 2011-03-21 | Dishwasher with fault identification |
Country Status (6)
Country | Link |
---|---|
US (1) | US9445703B2 (en) |
EP (1) | EP2557980B1 (en) |
CN (1) | CN102843948B (en) |
DE (1) | DE102010027756A1 (en) |
PL (1) | PL2557980T3 (en) |
WO (1) | WO2011128176A1 (en) |
Families Citing this family (22)
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DE102011087855A1 (en) * | 2011-12-07 | 2013-06-13 | BSH Bosch und Siemens Hausgeräte GmbH | Water-conducting domestic appliance e.g. domestic dishwasher has pump whose delivery pressure is adjusted and set such that difference between hydrostatic pressures are equal upon reaching desired wash liquid level |
ITTO20111248A1 (en) * | 2011-12-30 | 2013-07-01 | Indesit Co Spa | DISHWASHER AND METHOD FOR DETECTING A FAILURE OF WATER INTO THE SAFE DISHWASHER |
EP2609845B1 (en) | 2011-12-30 | 2018-06-27 | Whirlpool EMEA S.p.A | Dishwasher and method for detecting malfunctions thereof |
DE102012104637A1 (en) * | 2012-05-30 | 2013-12-05 | Miele & Cie. Kg | Washing or dishwashing machine with a monitoring device for the water inlet |
PL2916708T3 (en) | 2012-11-08 | 2020-06-15 | Electrolux Home Products Corporation N.V. | Detecting filter clogging |
PL2916707T3 (en) | 2012-11-08 | 2020-02-28 | Electrolux Home Products Corporation N.V. | Detecting operational state of a dishwasher |
ITTO20130039A1 (en) * | 2013-01-17 | 2014-07-18 | Indesit Co Spa | PROCEDURE FOR CHECKING THE FILLING OF WATER INTO A WATER-CONDUCTED HOUSEHOLD APPLIANCE |
JP6142287B2 (en) * | 2013-04-16 | 2017-06-07 | パナソニックIpマネジメント株式会社 | dishwasher |
SG10201406555XA (en) * | 2014-10-13 | 2016-05-30 | K One Ind Pte Ltd | Automatic Dishwasher for Eateries Centre |
US10655909B2 (en) * | 2014-11-21 | 2020-05-19 | Bsh Hausgeraete Gmbh | Refrigerating appliance |
US10595703B2 (en) | 2015-11-10 | 2020-03-24 | Electrolux Appliances Aktiebolag | Method of determining whether process water is present in a circulation pump of an appliance for washing and rinsing goods, and appliance and computer program therewith |
BR112018008151A2 (en) * | 2015-11-19 | 2018-11-06 | Electrolux Appliances Aktiebolag | Method for estimating water fill rate in a device, device, computer program, and computer program product |
CN108430298B (en) | 2015-11-25 | 2021-04-06 | 伊莱克斯电器股份公司 | Determining whether treatment water is added to a sump of an appliance during an interruption of operation of the appliance for washing and rinsing goods |
WO2017140335A1 (en) | 2016-02-15 | 2017-08-24 | Electrolux Appliances Aktiebolag | Process water flow detection in circulation pump |
CN106388749B (en) * | 2016-09-26 | 2019-10-01 | 佛山市顺德区美的洗涤电器制造有限公司 | The controlling Method for inflow and water inflow control system and dish-washing machine of dish-washing machine |
WO2018153472A1 (en) | 2017-02-24 | 2018-08-30 | Electrolux Appliances Aktiebolag | Dishwasher, method and control system for handling clogging condition |
CN110604527B (en) * | 2018-06-15 | 2023-02-03 | 青岛海尔洗碗机有限公司 | Water inlet control method of dish washing machine and dish washing machine |
KR102584504B1 (en) | 2018-08-29 | 2023-10-05 | 베스텔 일렉트로닉 사나이 베 티카레트 에이에스 | Dishwasher and Method |
CN109820463B (en) * | 2019-03-28 | 2021-07-06 | 佛山市百斯特电器科技有限公司 | Water inlet control method and dish washing machine |
CN110327009B (en) * | 2019-08-08 | 2020-12-01 | 杭州青晓白科技有限公司 | Dishwasher safe to use |
CN110823458A (en) * | 2019-11-08 | 2020-02-21 | 浙江全悠生物技术有限公司 | Self-checking method for fruit and vegetable cleaning machine |
US11006814B1 (en) | 2020-06-04 | 2021-05-18 | Bsh Home Appliances Corporation | Stemware support/cup shelf for dishwasher |
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DE3803006A1 (en) | 1988-02-02 | 1989-08-03 | Hanning Elektro Werke | DISHWASHER |
DE102004003536A1 (en) * | 2004-01-23 | 2005-08-11 | BSH Bosch und Siemens Hausgeräte GmbH | Liquid household electrical appliance |
TR200700213T1 (en) * | 2004-07-21 | 2007-04-24 | Ar�El�K Anon�M ��Rket� | A dishwasher with pulse width modulation |
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CN100413455C (en) | 2005-06-23 | 2008-08-27 | 乐金电子(天津)电器有限公司 | Water over-supply prevention structure of dishwasher and method thereof |
CN100413452C (en) | 2005-06-23 | 2008-08-27 | 乐金电子(天津)电器有限公司 | Air brake structure of dish washer |
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DE102008021371B3 (en) | 2008-04-29 | 2010-01-07 | BSH Bosch und Siemens Hausgeräte GmbH | Method for controlling a filling process of a water-conducting household appliance |
DE102008024543A1 (en) * | 2008-05-21 | 2009-11-26 | Premark Feg L.L.C., Wilmington | Method for operating a dishwasher and dishwasher |
ES2388172B1 (en) * | 2009-08-07 | 2013-08-19 | Bsh Electrodomesticos España S.A. | DISHWASHER MACHINE WITH A CAPTURE DEVICE FOR A STATE OF FILLING A COLLECTOR DEVICE FOR A WATERY WASHING LIQUID. |
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2010
- 2010-04-14 DE DE102010027756A patent/DE102010027756A1/en not_active Withdrawn
-
2011
- 2011-03-21 EP EP11710465.3A patent/EP2557980B1/en active Active
- 2011-03-21 CN CN201180018664.5A patent/CN102843948B/en active Active
- 2011-03-21 WO PCT/EP2011/054182 patent/WO2011128176A1/en active Application Filing
- 2011-03-21 US US13/639,196 patent/US9445703B2/en active Active
- 2011-03-21 PL PL11710465T patent/PL2557980T3/en unknown
Non-Patent Citations (1)
Title |
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See references of WO2011128176A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2557980B1 (en) | 2014-03-05 |
PL2557980T3 (en) | 2014-07-31 |
CN102843948A (en) | 2012-12-26 |
US9445703B2 (en) | 2016-09-20 |
WO2011128176A1 (en) | 2011-10-20 |
DE102010027756A1 (en) | 2011-10-20 |
CN102843948B (en) | 2015-01-28 |
US20130048025A1 (en) | 2013-02-28 |
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