EP2672875A1 - Lave-vaisselle et procédé de détection de dysfonctionnement dans un lave-vaisselle - Google Patents
Lave-vaisselle et procédé de détection de dysfonctionnement dans un lave-vaisselleInfo
- Publication number
- EP2672875A1 EP2672875A1 EP12701337.3A EP12701337A EP2672875A1 EP 2672875 A1 EP2672875 A1 EP 2672875A1 EP 12701337 A EP12701337 A EP 12701337A EP 2672875 A1 EP2672875 A1 EP 2672875A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- dishwasher
- operating parameter
- water supply
- pump
- liquid
- 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
- 238000000034 method Methods 0.000 title claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 81
- 239000007788 liquid Substances 0.000 claims abstract description 29
- 238000011156 evaluation Methods 0.000 claims abstract description 18
- 238000004140 cleaning Methods 0.000 claims abstract description 6
- 238000005406 washing Methods 0.000 claims description 23
- 238000001514 detection method Methods 0.000 claims description 13
- 230000004913 activation Effects 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 3
- 230000001419 dependent effect Effects 0.000 claims description 2
- 230000003213 activating effect Effects 0.000 claims 1
- 239000012459 cleaning agent Substances 0.000 claims 1
- 238000004851 dishwashing Methods 0.000 abstract 2
- 239000013505 freshwater Substances 0.000 description 12
- 239000007921 spray Substances 0.000 description 5
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000005429 filling process Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 101100298222 Caenorhabditis elegans pot-1 gene Proteins 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000010998 test method Methods 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
- A47L15/0021—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
- A47L15/0023—Water filling
-
- 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
- A47L2401/08—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
- A47L2501/01—Water supply, e.g. opening or closure of the water inlet valve
-
- 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 invention relates to a dishwasher, in particular a domestic dishwasher, with a rinsing container in which to be cleaned items can be arranged, and with a liquid circuit for applying to be cleaned ware with liquid, wherein in the liquid circuit at least one mechanically driven circulation pump for conveying the Liquid is switched.
- Dishwashers can be connected via fresh water supply lines to the water supply network. If the inflow of water through the fresh water supply line is excessively large, the supply of water may be incorrectly over-inflated, which may result in malfunctioning of the rinse container overflowing with water and a resulting "overflow" of the dishwasher Repair customer service.
- the object of the invention is to provide a dishwasher, in particular a domestic dishwasher, as well as a method for fault detection in a dishwasher, by means of which an excessive water supply is detected in a simple manner.
- the dishwasher water supply means for example in the form of a fresh water supply with a water inlet valve provided therein, by means of which the rinsing is filled during a section somnphase in a predetermined period of time with a quantity of water that is less than an amount of operating water for cleaning items to be washed.
- at least one operating parameter of the circulating pump or of a drive unit assigned to the circulating pump is detected as a function of a volumetric flow conveyed in the fluid circuit and thus also dependent on the quantity of water supplied.
- the amount of operating water is so dimensioned that the circulation pump operated in a non-air-sucking concentricity can be.
- the supplied during the section galphase amount of water is such that the circulating pump sucks air and thus can not be operated in the concentricity, but is so large that changes in the amount of water supplied a change in the operating parameters of the circulation pump or the associated drive unit, eg the power consumption of the circulation pump driving electric motor, the result.
- the amount of water can be such that they z. B. is smaller than the amount of operating water by a factor of 5-20, which is required to clean items in the dishwasher.
- the partial filling of the washing container can be effected in that a control device of the dishwasher opens a water inlet valve in the fresh water supply line during the partial filling phase.
- a control device of the dishwasher opens a water inlet valve in the fresh water supply line during the partial filling phase.
- at least one sensor system is provided, and an evaluation unit is provided for evaluating the operating parameters or variables derived therefrom.
- the partial filling of the washing container according to the invention ensures that an excessive supply of water can be reliably detected without there being any "real" overfilling of the washing container with the potential risk of overflow of the dishwasher.
- the operating parameters are, for example, the electric current consumption or the electrical power of the electric motor derived therefrom, which change substantially in proportion to the load on the pump and thus proportionally to the delivered volume flow Partial filling phase supplied excessively much water, so the circulation pump must deliver correspondingly much water and thus a correspondingly high volume flow, whereby their current consumption and power is correspondingly large e Power consumption and power low when only a reduced amount of water is supplied during the partial filling process.
- the operating parameter may also be an electrical voltage, a torque and / or a rotational speed of the drive motor of the circulation pump.
- you can too several such operating parameters possibly by a plurality of sensor systems, detected and further processed in the evaluation.
- the invention thus also makes it possible to determine the water volume flow in the fresh water supply line by evaluating operating parameters of already existing device components. This determination can be made, for example, by the evaluation unit.
- an additional flow meter such as an impeller counter, can be dispensed with. Instead, you can.
- a direct detection of the supplied water volume flow can take place, e.g. by an impeller meter, which is arranged in a line section of the dishwasher.
- the operating parameters detected by the sensor such as the current consumption of the drive motor of the circulation pump, or a variable derived therefrom, such as. the electrical power of the drive motor of the circulation pump or the water volume flow in the fresh water supply line can be compared by the evaluation unit with a limit value.
- the limit value can correspond to a desired amount of water to be supplied during the partial filling phase in the fault-free state. Such a desired amount of water results at a given water line pressure and error-free operation of the device components involved in the fresh water supply.
- the involved device components may be e.g.
- a water inlet valve and / or a pressure reducer which may be provided separately from the water inlet valve or integrated therein.
- an error signal can be generated, which indicates that the guided to the dishwasher water flow and thus the amount of water supplied are excessively large.
- the error signal can also be output as an error message.
- the error signal can also be stored so that it can be read at a later time, e.g. from customer service, can be retrieved.
- the method according to the invention is carried out automatically before the beginning of each rinse cycle.
- the dishwasher is filled to a certain level with the amount of water supplied.
- the circulating pump is activated, that is to say switched on, and then remains activated during the test phase at least until the operating parameter of the circulating pump or its drive unit is detected.
- the circulation pump can be calibrated before the beginning of a partial filling phase.
- liquid can be conveyed out of the dishwasher before the partial filling phase by activation of a drain pump and thus the washing container can be completely emptied.
- the circulation pump can be operated in an idle mode in order, for example, to perform pump calibration during pump calibration. to detect the current consumption of the drive motor in idle mode.
- the drain pump can first withdraw liquid from the dishwasher when the circulating pump is switched off. Subsequently, the circulation pump can be turned on to confirm the empty state of the washing container based on the monitored operating parameters.
- FIG. 1 shows a schematic block diagram of a dishwasher according to the invention.
- Fig. 2 is a flowchart for error detection according to the invention in a dishwasher.
- FIG. 1 shows a dishwasher with a washing container 1 delimiting a washing compartment.
- a washing compartment of the washing container 1
- a not shown to be cleaned dishes in dish racks 3, 5 are arranged.
- rinsing Container 1 are exemplified two, provided in different spray levels spray arms 7, 8 are arranged, via which the wash ware is treated with rinsing liquid.
- a pump pot 11 with only roughly indicated sieve assembly 10 is provided.
- a circulation line 9 with circulating pump 13 arranged therein and downstream water heater 12 is led away.
- a water distributor 21 is provided, branch off at the two supply lines 14 of the circulation line 9.
- the circulation line 9 is connected to the spray arms 7, 8.
- the rinsing liquid sprayed out of the spray arms 7, 8 collects on the rinsing container bottom and is introduced again via the pumping pot 11 into the circulation line 9, so that a liquid circuit is formed.
- a drain pump 18 is arranged for pumping out rinsing liquid from the washing compartment 1.
- a water inlet valve 15 is arranged, which forms a water supply means together with the fresh water supply line 16.
- water inlet valve 15 is a not-shown, known pressure reducer integrated, which can reduce a required during a rinse water volume flow rh to the dishwasher.
- the dishwasher has a control device 27 with which the program steps known per se, namely pre-rinsing, cleaning, intermediate rinsing, rinsing and drying, can be carried out.
- the control device 27 can control the respective device components via signal lines 26 shown in dashed lines.
- both the circulation pump 13 and the drain pump 18 each have a drive unit in the form of an electric motor 28 or 28 ', which drive the respective pump 13 or 18 via drive shafts 29 and 29'.
- the electric motors 28, 28 ' can be designed, for example, as so-called BLDC motors, that is, brushless three-phase synchronous motors.
- the electric motors 28, 28 ' may also be assigned not shown inverter or inverter, the respective Electric motor 28 and 28 'supply with electrical energy.
- the converters or inverters thereby generate the required electrical three-phase voltages for the respective electric motor 28 or 28 ', ie electrical voltages with the required frequency and the required effective value.
- the controller 27 can control the electric motors 28 and 28 'of the pump 13 and 18, optionally also regulate.
- an electrical current consumption I or ⁇ of the respectively associated electric motor 28 or 28' can be detected during pump operation.
- the thus detected electrical current consumption I and ⁇ be performed as operating parameters via signal lines 30 and 30 'to the controller 27 and evaluated there in an evaluation unit 32.
- the water volume flow rh in the fresh water supply line can also be determined by the evaluation unit 32, which enters the liquid circuit of the dishwasher during the wash cycle with the water inlet valve 15 open.
- the evaluation unit 32 is integrated into the control device 27. Alternatively, however, the evaluation unit 32 can also be realized separately.
- the rinsing container 1 together with the sump 11 is completely emptied of liquid located therein.
- the drain pump 18 is activated by means of the control device 27, while the circulating pump 13 is deactivated, i. remains off.
- the circulating pump 13 is deactivated, i. remains off.
- the circulating pump 13 can then be activated, in which case the empty state of the dishwasher can be confirmed on the basis of the current consumption I of the circulating pump 13 detected with the aid of the sensor system 31.
- a pump calibration can be carried out, in which an operating parameter P of the Circulating pump 13 driving electric motor 28 detected in the form of the electric current consumption I of the electric motor 28 in the idle mode of the circulating pump 13 as a reference value and can be stored in the control device 27.
- a partial filling phase is started in which the control device 27 opens the water inlet valve 15 for a predetermined first time interval, whereby during the first time interval an amount of water ⁇ m is introduced into the washing container 1.
- the amount of water ⁇ m is smaller than an amount of operating water, which is required to clean dishes in the dishwasher.
- the circulation pump 13 is deactivated during the partial filling phase.
- the water inlet valve 15 is closed again and a test phase is started.
- the circulating pump 13 is activated for a second time interval At 2 .
- the operating parameter P in the form of the current consumption I of the electric motor 28 of the circulating pump 13 is detected with the aid of the sensor system 31.
- the current consumption I of the electric motor 28 of the circulation pump 13 behaves proportionally to the voltage applied to the circulation pump 13 load. That is, for a large volume flow in the liquid circuit, the current consumption I of the electric motor 28 is correspondingly large, while at low flow in the liquid circuit, the current consumption I of the electric motor 28 is correspondingly low.
- the detected current consumption I of the electric motor 28 of the circulating pump 13 is supplied to the evaluation unit 32 and compared by this with a limit value.
- a limit value When the limit value is exceeded, a fault is detected in which, in the partial filling phase during the first time interval A, an excessive, ie excessively large, amount of water A m is supplied.
- Such an excessive water supply results, for example, when the pressure reducer in the water supply line 16 is defective or removed.
- the water supply is stopped, for example by the water inlet valve 15 is closed by the controller 27.
- an error signal generated and z. B. in the evaluation unit 32 or the control device 27 is stored. The error signal or the error information contained is then available eg for customer service and can be output.
- the abovementioned limit value is dimensioned such that it corresponds approximately to a nominal amount of water to be supplied during normal operation during the first time interval et.sub.i, ie in the fault-free state.
- this limit value can be chosen such that the nominal amount of water A m supplied during the partial filling phase is 300 ml during normal operation. During normal operation, that is to say in the case of a properly functioning water supply means, this quantity of water is thus fed into the washing container 1 during the partial filling process. The detected during subsequent activation of the circulation pump 13 current consumption I is thus correspondingly lower in normal operation than in the event of a fault.
Landscapes
- Washing And Drying Of Tableware (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL12701337T PL2672875T3 (pl) | 2011-02-07 | 2012-01-19 | Zmywarka do naczyń i sposób wykrywania usterek w zmywarce do naczyń |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011003688A DE102011003688A1 (de) | 2011-02-07 | 2011-02-07 | Geschirrspülmaschine und Verfahren zur Fehlerdetektion in einer Geschirrspülmaschine |
PCT/EP2012/050788 WO2012107264A1 (fr) | 2011-02-07 | 2012-01-19 | Lave-vaisselle et procédé de détection de dysfonctionnement dans un lave-vaisselle |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2672875A1 true EP2672875A1 (fr) | 2013-12-18 |
EP2672875B1 EP2672875B1 (fr) | 2015-04-29 |
Family
ID=45540868
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20120701337 Active EP2672875B1 (fr) | 2011-02-07 | 2012-01-19 | Lave-vaisselle et procédé de détection de dysfonctionnement dans un lave-vaisselle |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2672875B1 (fr) |
DE (1) | DE102011003688A1 (fr) |
PL (1) | PL2672875T3 (fr) |
WO (1) | WO2012107264A1 (fr) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9872597B2 (en) | 2012-11-08 | 2018-01-23 | Electrolux Home Products Corporation N.V. | Detecting filter clogging |
US10244919B2 (en) | 2012-11-08 | 2019-04-02 | Electrolux Home Products Corporation N.V. | Detecting operational state of a dishwasher |
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 |
US10786137B2 (en) | 2015-11-25 | 2020-09-29 | Electrolux Appliances Aktiebolag | Determining whether process water has been added to a sump of an appliance for washing and rinsing goods during interruption of appliance operation |
US11019979B2 (en) | 2016-02-15 | 2021-06-01 | Electrolux Appliances Aktiebolag | Process water flow detection in circulation pump |
US11141039B2 (en) | 2017-02-24 | 2021-10-12 | Electrolux Appliances Aktiebolag | Dishwasher, method and control system for handling clogging condition |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITTO20130039A1 (it) * | 2013-01-17 | 2014-07-18 | Indesit Co Spa | Procedimento per controllare il riempimento di acqua in un elettrodomestico a conduzione d'acqua |
DE102017216947A1 (de) * | 2017-09-25 | 2019-03-28 | BSH Hausgeräte GmbH | Geschirrspülmaschine und Verfahren zum Betreiben einer Geschirrspülmaschine |
CN111802985B (zh) * | 2020-06-12 | 2021-11-19 | 佛山市百斯特电器科技有限公司 | 一种基于洗涤设备的洗涤程序的切换方法及装置 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1282923B1 (it) * | 1995-01-12 | 1998-04-01 | Zanussi Elettrodomestici | Lavatrice con sistema di controllo dinamico del carico d'acqua. |
DE102007014386A1 (de) * | 2007-03-26 | 2008-10-02 | Scotsman Beverage Systems Gmbh | Verfahren und Einrichtung zur Steuerung eines wasserführenden Geräts, insbesondere zur Vermeidung von Wasserschäden |
DE102009027690A1 (de) * | 2009-07-14 | 2011-01-20 | BSH Bosch und Siemens Hausgeräte GmbH | Wasserführendes Haushaltsgerät |
-
2011
- 2011-02-07 DE DE102011003688A patent/DE102011003688A1/de not_active Withdrawn
-
2012
- 2012-01-19 WO PCT/EP2012/050788 patent/WO2012107264A1/fr active Application Filing
- 2012-01-19 PL PL12701337T patent/PL2672875T3/pl unknown
- 2012-01-19 EP EP20120701337 patent/EP2672875B1/fr active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2012107264A1 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9872597B2 (en) | 2012-11-08 | 2018-01-23 | Electrolux Home Products Corporation N.V. | Detecting filter clogging |
US10244919B2 (en) | 2012-11-08 | 2019-04-02 | Electrolux Home Products Corporation N.V. | Detecting operational state of a dishwasher |
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 |
US10786137B2 (en) | 2015-11-25 | 2020-09-29 | Electrolux Appliances Aktiebolag | Determining whether process water has been added to a sump of an appliance for washing and rinsing goods during interruption of appliance operation |
US11019979B2 (en) | 2016-02-15 | 2021-06-01 | Electrolux Appliances Aktiebolag | Process water flow detection in circulation pump |
US11141039B2 (en) | 2017-02-24 | 2021-10-12 | Electrolux Appliances Aktiebolag | Dishwasher, method and control system for handling clogging condition |
Also Published As
Publication number | Publication date |
---|---|
WO2012107264A1 (fr) | 2012-08-16 |
PL2672875T3 (pl) | 2015-10-30 |
DE102011003688A1 (de) | 2012-08-09 |
EP2672875B1 (fr) | 2015-04-29 |
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