HUE031426T2 - Method and device for detecting a water change in a water-bearing household appliance, in particular a dishwasher - Google Patents

Description

iútelhed óná device for detecting s water change so a watermonduetino domestic appliance, in padlcufar a drshwasher 100021 The mvenhon relates te a method and a device for detesting a: water change in a waiee conducing domestic appliance, in particular a dishwasher. ÖiiLtó Í00031 Automatic metering devices which Öpáraté SutendmousfHn a dishwasher and dispense a pteratéy of different preparations sete the washing process te a timf^deteyed manner are hnowh horn the prior art 10004| Sfteh. 'teétefteg.. devices - Ópétete·:.dtteijpa,raiiv»f y mittóly as long as they s ara operated within i y pic ai,·' static wash pfogmms, 1000S] in the arse of programs for dmhwashers. however, so-callerf automatic programs have become established which ere ahfs to dynamically adapt or change their program sequence wlttcn an automatic program hasad on supplied sensor data, such as from a furbidny sensor, for example, in order to ha able to provide a mseit thai is optimised for esteems water consumption, snd/or oleahiop results, corresponding to the machine teed and the existing soiling load, without the need for intervention by the user. 1000¾) By css of the above-mentioned metering devices, it is currently possible to reliably detect the start of a wash program ever·, adomaso programs, however, these metenng devices reach Iheu'imsi wiren dispensing preparations in particular m the rinse section oi a wash program, since, due to the dynamic wash program adaptation of fee automatic programs, for example metering of a rinsing phase after a defined padod of hme after me start of the wash program is detected may resisit in dispensing prior to the stag of the nnse apaion m an autóm alls pmgfam. Since in such a case the oosmg preparation -s riot available m the case program due to the fact that a water change usually occurs prior to a hnse section within a wash program, the resulting cleaning resati is generally not optimal· fO00?| The oPIect M the teveniidre fhemfote, is to provide a method and d device with which á water change, to parfiediar prior to: a rinse sétálóit wsfhid a wash program, reap he detected, 1000¾) This oigect is achieved hy a method seoehfng to Claim l aed a device according to Claim 5. 10001 The iriethod adeonflhg to the invention tor detectihgs water of mage in a wátetveenduetteg domestic appliance, is particular a dishwasher, composes a sensor ter detecting water, a sensor far detecting the temperature, ana a contra! unit for processing the sensor data, 'wherein the method includes the following steps: (a.) delecting water In a defined time interval ZL ; of 2-120 seconds praf&raoiy $-60 seconds, partieuiaiiy profitably IQ-00 seconds, wherein, alter the lack of water has been detected si at :e«si two, prewretry at least threw, consecutive mess; srement ponds within a time interval 21,, > the method step fp i is earned out. (b.) detecting water to a defined nme Interval 2b - of I ms-i20 seconds. preferably 5 ms-SS seconds particularly pnsferabiy to res-30 seconds wherein after the presence ot water has been established fat least) once within the time Iota;vat Zb ., the msthod step fs) ;s cetrled out (oO detecting the temperature Irt a time udsivai Zl· of 2-120 seconds, preferably 5-00 seconds, particularly preferably 10-30 seconds, wherese the method step (d ) is carried out tf for at least two, preferably at least tf;ree consecutive temperature measuring intervals Zb · wd.hin fee time iatervai Zt· ?. the temperálóra T. at fee start of the measuring interval ZbIs higher than the temperálom 12 at the end oi the measuring interval Zl· :5. (>d.) carrying out the method step re.) ;f ices than two minutes pees between the wafer being detected according to method step tb) and a negative temperature gradient being detected at mast three times so succession according to method step top (a.) generating a control signal by means of the centre! unit dpi dp a debated water chengd according to the method steps ta ) to (d ) [mm K is particularly preferred that, after a detected water change, the control signal causes the metering of a rinsing preparaticn IdtP the inner chamber of a dishwasher, ibis ensures in particular that a rinsing preparation is metered; info the rinse program section at the end of an automatic program. jOOfij in one particularly prefarted embodiment -of the method according to the invention, the method having the method steps la He.) & not carried out until after at least one first dishwashing preparation, preferably an easy roe-containing dishwashing preparation, has been released into the reside of the dishwasher, the at least one fust dishwashing preparation being released if at least one temperature > 25:, preferably > 292 and the presence of water have been detected. A detailed description of the deteaion of ice start of e wash program has been disclosed by the applicant lo ÖE 10 2010 002 750 2 |0012| it is thus particularly advantageous to carry out the method according to the invention only after a? least one cleaning preparation has been dispensed at the start of the washing process. tilplZl; In this osgariL it is vary particularly advantageous that the preparations lilát éré mefemd

Ms tha washing prb&aas ass different from one another, á being particularly advantageous that the preparations inat are metered at the sled of the washing process, and the preparations that am added afters water changeis detested, are differentfrem ene another. 10014] in another preferred emUonlmeni of the invention, the method hevmg the method steps (a,)-(e,) is earned red Pies at least one second dishwashing prepái shun, preferably an a;heiioe dishwashing preparation, has oeen felessed into the Inside of the dishwasher, alter the f«s? dishwashing preparation has been released 10015] ih iödiiörh the present invention relates to a device for metenng at rinsing preparation into the Inner ohanther e? a dishwasher* comprising a sensor for defecting wafer, a sensor for defecting the temperature, and a control unit for processing the sensor data, wherein the control coif Is configured for carrying oat the method according ic the invention* lOOtiJ The metering device is preferably freely positional in the inner chamher oi a dishwasher by a usee lile also advantageous that trie device includes a cartridge having at teas! one chsmoe* in which the M fesstorwüwihg preparation ic stored: (0017] The metering device Includes a metering unit having a canridga which Is detachably or undetaehadly coupled to the metering un-u the cartridge having at least one chamber which contains a dishwashing preparation in particular the control nnit: which is necessary for carrying out the method according to the invention: and at feast, orie sensor for detecting wafer and a sensor for detecting the ternpemfum are integrated into the metering unit. In addition, an actuator for releasing a dishwashing preparation, and/or a power Source are/ls preferably situated cm or m the metering unit, ilSSl [ÖÖ19J The metering device preferably has at least on® sensor for defecting water, and a sensor for detecting the temperature. The temperature sensor is designed in pedicular for detecting a water temperáidra:.

[00191 R is üsd preferred that the metering, device includes a sensor for defecting the cooduehvily, Py means of which m particular the presence of water or the spraying of wafer, In particular In a dishwasher, id detooted.

[00201 hi one advantageous emhodioteol of the Invention, the sensor unit includes at least one

Dipolar conductivity sensor At least two poles of the conductivity sensor ere preferably spaced apart by 2-2$ mm, preferably IMS may particularly preferably approximately f 2 muk :00a; | II Pas proven m oo padicuiany advantageous mat at mast two poles oi a oonbuchvity sensor are envelopes; by an eiecnlvelly condncnve silicone it ran op particularly omfened loaf an essennesy planer surface ;s fan ana between the smsnna and an external mm ace oi the melenng erét One to Ida elastomeric properties of tne conductive salcone, the sensor may be easily end effectively seeled off from the surroundings end sot into a housing wab of the metánná unit 10022:1 To mairtiain the measuring accuracy, also after a plurality of measurements, it Is advantageous. to carry out a polarity reversal cl Ihe bipolar conductivity sensor offer each resistance measurement so that no excess charge can form on the conductivity sensor.

[ÖÖ23J if is particularly preferred ihat at least two sensor amis are provided for measuring different parameters, it being very particularly preferred that one sensor unit is a conductivity season end another sensor urat is a temperature sensor.

[D024J Tbs sensors ere coordinated :n particular lor delecting the strut, course, and end of a wash program The sensor combinations :n Pie following mole may he used for this purpose (by way of example and not an exhaustive listing)

pb2S] By means of she conductivity sensor it may bo defected, lor example, whether the conductivity sensor is wetted by water so that it may be determined, for example, whether water is present in the dishwasher |002&) The oondnotanoe/sonriuéílvity sartsor may be made up of an electrically conductive anode end a cathode which protrude horn the housing of the metering unit into the interior of the dishwasher or which are connected in an efocmoaiiy conductive manner to the interior of the dishwasher. The spacing between the anode and the cathode :s preferably selected In such a way that during operation of the dishwasher an efeotricaliy conductive water Podge may form between the anode arid the cathode, which may be measured by a drop m the resistance between the anode and the oatrsode. 1ÖÖ2T] Wash programs generally have a ebarauterieinp teatpraiore profile which is determined. among otner ways from the heating of the WW bd$ ^ "lí#fbb baltiig »is4 wh;cn :s ceteciame vsa a temperature sensor. *0028] However to clew efficient manufactura and assembly of the metering unit, if is also possible for at toast one so;: so; mat to be si; oof op op or m the control unit For example. a at possible to provide a temperature sensor in the metenog urat or directly on the board beanng the control unit, so ihat the tomporaimé sensor has nu direct contact With the surroundings.

Oontmi.unit 10029; A control omf wlthm tne moaning of tho present patent application is a device which is soil able for influencing the transport of material. energy, anrhor iriformation. To this end. vsa control Signals the contro; unit inferences actuators with the asd of information, in particular rneasuncg Signals of the senses und which ;t pmcesses for purposes of the control objective. 10030] in particular, tne control unit may he a programme bin microprocessor In one particularly preferred embodiment of the invention, a plurality of meteorig programs ;s stored on the mieropmeeseor. (0031 j in one .preferred embodiment the control unit has no connection to a controller which may be present so tne domestic appliance. Accordingly, no information. 1st particular electrical, optical, or electromagoet Signals, is,rare directly exchanged between the control sasit and the controller of the domestic appliance. 10033] in an alternative embodiment of the invention, the control und is coupled to tne existing controller of the domestic appliance. This coupling is pseferaoiy cordless. For example, ;t ,s possible to position a transmitter on or in a dishwasher. preferably on o? at the metering chamber set into the door of the dishwasher which wirelessly transmits a signer to the metenng device when I id; controller of the domestic appliance brings about the metering of a cleaning agent for example, from the metering chamber or of a rinse aid. H is thus possible for the controller of the dishwasher to transmit control signals to the metering device for dispensing specific preparations and metering gegniffies. I0D33I in the even? that the coupling between the dishwasher controller and the metering device controller is disrupted, for example if there is a Signal interruption ounng the wireless Signal transmission, it Is also conceivable fortius Signal interruption to be detected by the metonog device controller and a switch to be made to an internal motoring program, so that the matesing of: the preparation from the metering device sole the washing process is ensured despite the disruption in the signal transmission. A corresponding method has lmon described by the applicant in m.m mmtmwM. 1003-43 The dfsphiteidg öf pr^'rMöRt'frtsrp -tHö. tbetering unit may late place sadyenttefy tr simultaneously, P03§| ft is gartictearly preferred tb méteré plurality of preparations segupnitaffy snip a wash pmgrahi, The fdfiowingteeiChng -sequences sre psfiieyiady pretemd;

fööSij Furthermore. it is advantageous tor at teást one enxyme-cootaining preparation and/or atealioe preparation to he misused in the prewash and/or main wash program of tire dishwasher, the release of the en^ymo-contaming or epos s hon proferamy taking pipes prior to the mi rase of the aiKaiine precandigfi, in addition, it is preferred for the rinse aid to he metered in the rinse program oi the dishwasher, the rinsing program hemp recognised hy a wafer change according to the method uncording to the invention desohbed here. (00:57] According *0 another preferred embodiment of the invention, a discontinuous, discrete resistance measurement tabes place at the conductivity sensor end preferably also at the temperature sensor. The discontinuous, discrete measurement in particular reduces the electrical shelly Pohsumphon of the control unit. pg/tef The invention is eapfatned in greteer detail betow with reference to the figures, m which: Figute 1 shows the metering device in e dishwasher: pg Figure 1: shown a flow chart of the water change recognition. |003§1 fsgure 1 snows n mstenng device made up of a positsonahie metering uni! 2 haomg a two-chamber cartridge 1 m the loading rack i i of a d-shwssher 38. wah the dishwasher Poor 38 open, A control unit, a tempeieKee sensor, and a conductivity sensor are shoaled in die metenng unit 2. ΐϊ is apparent that the metering m-A 2 logethe; w,rh the cartridge t In principle is poslbonable at any Pesited location Within the loading rack 1 Ut being advantageous to provide a plate- or cep-shaped metering system 1. 2 in a corresponding plate or cup receptacle In the loading rack 11, 10040] Situated to the dishwasher ctoor 3§ is a materéig chamber 53 into which a dishwasher öeamng preparation may he Introduced for example in the form of a tamed In this embodiment of the invention. -t is advamageous that when the posliionahle metering system 1,3 is situated In the hodont or top loot shown? loading rack n. the preparations 40a 40b ore dispensed from On? cartridge 1 directly smo the wash water liquor via the outlet epee mgs situated at the Pass of the metedng unit, so that rapist dissolution and uniform distribution of the wash preparations m the wash program am ensured. This also ensures that the conductivity sensor, which in the operating position of the metermg uni* shown ss situated at the bottom of the metering unit m the direction of gravity, is directly sprayed with wash water hy a spray arm dunng operation of the dishwasher, arid the .control uhit and the conductivity sensor are configured In such s way that a discontinuous,, discrete resistance measurement Is carried out at lire conductivity sensor and preferably also at the temperature sensor . (8041 j figure 2 allows do exemplary embodiment of the method according to the Invention in the loon of a flow chart, the method comprising the following stops: (η,? detecting water in a defined time interval ZL > of 2-120 seconds, preferably 5-60 seconds, particularly preferably 10-30 seconds, wherein, alter the lack of wafer has been detected at at least two. preferably at feast three, consecutive measurement points within a time internal Z!,v v the method step tb ) Is canted out.

Cib,} detecting water In a defined time interval 2U- of i rns- J2Ö seconds, preferably 5 ms-60 seconds, particularly preferably 10 ms-30 second??. wherem after me .present -of water has been established once within the time Interval 21¾¾. the method step fc<) Is earned out. <£>) detecting the temperature in a time interval ZU-i of 2m 20 seconds, preferably 8-60 seconds, particularly preferably 10-30 seconds, wherem the method step (d } is carried oof ft for at least two, preferably at feast three, consecutive temperature measuring intervals Zh-,; wlfhlo the time interval Zb;;, the temperature T3 at the start of the measuring mtervai 2! r s Is higher than the tefisperaiure T2 at the end of the measuring interval 28¾¾ (d.) carrying oof the .method Step (eg if less, than two minutes pass between the wafer being deteaed according to method step (b.j and e negaüvs temparaUtra gradtaat. ^aöti: detected at taasr three hmss in succession according to method step (c,h <e.) generating a control ssgeál % means of the· cotttroi unit doh te a detested water change accenting to the seethed steps fa) m (dg.

Claims (8)

PROCEDURE FOR THE DETERMINATION OF WATER VACCINATION INTO A DRIVER DEVICE, SPECIALLY WASHING EQUIPMENT AND INSTRUMENTS S2A8ADALM 1, Process for Water Resistant Household MakerTake a Dishwasher Dishwasher, which includes * brain sensor vi? * senses for temperature detection, * brain control units for processing sensor data, the method comprising the following steps; (a) detecting water, a predetermined modality of 2-120 seconds; S ~ 60 seconds., Particularly preferably 30-30 seconds in 21 ban., Time intervals, and then., So that at least two, preferably at least three, measuring points within the time interval Z1, vi are detected so that there is no water., according to process step (b) (b), water is detected in a defined, 0, 001-: 3, 20 second, preferably., honey 0.005-60 second, particularly preferably 0.010-30 second. at a time interval, and after at least once finding that there is water; (c) detecting the temperature in the brain for 2-120 seconds, preferably $ -00 seconds, particularly preferably in the 10 -30 second 2h 5 time interval, and then performing (d) a process step if at least two, preferably at least three consecutive, Z; Measuring 2iM temperature within 3 time intervals; In the case of interval Z1, the temperature at the beginning of the interval <interval 5 is greater than the temperature T. at the end of the measurement interval Z1, (d) the step (ej if step (b) proceeds). seonb detection and a negative temperature gradient between successive detection of step (c) step carbon, at least three times, at less than two minutes in the age (ej control signal with control unit i, a} - (d) - Steps should be done; 2, Is. claim is a method described by its control! triggers after a detected recovery; brains. 3, X or 2, demand point, that's it! the characteristic is that k is the rule. (a) - (e) "leased episodes are carried out after having at least one first dishwashing detergent composition, preferably an enxlm containing detergent composition, dispensed inside the dishwasher, which is at least the first sink · Patching agent release occurs, if at least> 2S * C'Os, preferably> 2.9 <C, and presence of water. Method according to one of the preceding claims, characterized in that the method is carried out by the steps (method e (e); after the release of the first dishwashing detergent composition, at least a second sink-detergent composition, preferably an alkaline sink). - we have released a detergent preparation in the body of the teeth, 5, a means for feeding a bin composition into the interior of a dishwasher, comprising: © a sensor for water detection, a sensor for temperature detection, a control unit for processing sensor data, the control unit according to any one of claims 1 to 4 is designed to perform a process 6, The. Device according to Claim 1, characterized in that the device can be inserted inside the brain of the dishwasher by a user. Device according to Claim 7, A, S, or 6, characterized in that the device comprises a brain cartridge with at least one chamber in which at least a brain is stored as an antifungal composition, characterized in that the device according to claim 1 is characterized by: that the cartridge comprises at least three chambers in which an enzyme composition is stored, an alkaline composition, and a concealer. Device according to one of Claims 5 to 8, characterized in that the control unit is, by means of the control of the household appliance, in particular wirelessly, pcs.i.