EP1029962A1 - Verfahren zur Optimierung des Arbeitszyklus einer Spülmaschine und eine dieses Verfahren gebrauchende Spülmaschine - Google Patents

Verfahren zur Optimierung des Arbeitszyklus einer Spülmaschine und eine dieses Verfahren gebrauchende Spülmaschine Download PDF

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Publication number
EP1029962A1
EP1029962A1 EP00400424A EP00400424A EP1029962A1 EP 1029962 A1 EP1029962 A1 EP 1029962A1 EP 00400424 A EP00400424 A EP 00400424A EP 00400424 A EP00400424 A EP 00400424A EP 1029962 A1 EP1029962 A1 EP 1029962A1
Authority
EP
European Patent Office
Prior art keywords
water
cycle
tank
rinsing
measuring
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
EP00400424A
Other languages
English (en)
French (fr)
Other versions
EP1029962B1 (de
Inventor
Benoít THOMSON-CSF Propriété Intell. Gailledrat
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.)
Brandt Industries SAS
Original Assignee
Esswein SA
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 Esswein SA filed Critical Esswein SA
Publication of EP1029962A1 publication Critical patent/EP1029962A1/de
Application granted granted Critical
Publication of EP1029962B1 publication Critical patent/EP1029962B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A47L15/4244—Water-level measuring or regulating 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
    • A47L15/0026—Rinsing phases
    • 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
    • A47L2401/09—Water level
    • 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
    • A47L2501/30—Regulation of machine operational steps within the washing process, e.g. performing an additional rinsing phase, shortening or stopping of the drying phase, washing at decreased noise operation conditions

Definitions

  • the present invention relates to a household appliance such a dishwasher fitted with a control process for the washing bath so as to optimize the rinse cycle.
  • the invention does not seek to measure the turbidity of water in the wash and even less in the next rinse but proposes to measure the residual quantity of water at the end of washing, which beyond a certain threshold is the clear indicator that the dilution factor (detergent + micro-waste) is not sufficient to obtain a product to be washed flawless. In this case, the rinsing is automatically increased by one see several rinses.
  • the subject of the invention is a process optimizing the operating cycle of a dishwasher with a tank filled with liquid from a water intake, comprising a washing cycle, followed by a rinsing cycle characterized in that it includes a step of measuring the amount of water remaining in the tank at the end of the washing cycle, said quantity of water constituting an indicator of the dilution factor (detergent + micro-waste), so as to adapt the rinse, adjusting the number of rinses.
  • the measurement of the amount of water remaining at the bottom of the tank is a direct measurement made by height direct pressure gauge for example by an analog pressure gauge (piezoelectric Or other).
  • the step of measuring the amount of water remaining can be done differentially by volume measurement of water to bring at the start of the rinse cycle to reach a volume in the tank bottom, predetermined standard.
  • the measurement can relate to the water supply time or be performed using a flow meter to measure the additional volume of water to bring to reach a standard level.
  • the subject of the invention is also a household appliance of the type dishwasher implementing the method of the invention.
  • This device can advantageously include a filled tank in liquid from a water intake including a solenoid valve and means for closing the solenoid valve when the amount of water necessary for the operation of the wash cycle or the rinse cycle is equal to a predetermined amount of water and a cycle scheduler washing and rinsing cycle characterized in that it comprises means to measure the amount of water remaining in the tank at the end of the washing and means for controlling the programmer so as to adapt the rinse cycle by adjusting the number of rinses according to said quantity of water measured.
  • any means of precise measurement of water level which may include a pressure gauge, or even a float.
  • the means for closing the solenoid valve may be of the type pressure switch.
  • a household appliance 1 such as a dishwasher, shown schematically in Figure 1, includes a body 2, a tank 3 in which are mounted dish baskets 4, 5, reels sprinkler 6, 7 and a water level control device 10.
  • This device for regulating the water level 10 can be, in known manner, consisting of an air pressure switch whose chamber, delimited by a membrane flexible, is connected to the compression chamber, bell-shaped, arranged in the appliance bowl.
  • the diaphragm of the pressure switch which moves under the effect of pressure variations relative to the atmosphere acts on an electrical contactor which gives the level signal reached, at automation.
  • This level reached is not necessarily chosen to correspond to a sufficient volume of water available at the bottom of the tank to operate the device in normal (or nominal) fashion.
  • a variant of the invention in this case can be: provided that the detection water level is fine enough to control a volume of water precise, compatible with the operating thresholds of the present process, we can make the level reached coincide with the volume of water at the bottom of the tank just necessary, and sufficient, for the device to function properly.
  • the water level control device 10 thus provides a level well determined, necessary for safety and economic reasons of water.
  • the dishwasher also has a drain pump allowing to renew the liquid at the bottom of the tank.
  • the bottom part of the tank includes a recycling pump fitted with a guide of pumped water towards the lower watering reel and a pump » drain connected to a drainage pipe. Filters and microfilters allow the recycling of clean water to supply closed circuit reels so as to save the volume of water introduced since outside.
  • washing cycles water + detergent
  • rinsing cycles water only
  • Figure 2 shows the main steps of an example of method according to the invention.
  • the first step concerns a standard washing cycle C I.
  • the second step corresponds to an emptying operation V of the tank.
  • the third step corresponds to the first phase of the rinse cycle C R , that is to say the first operation of filling the tank with clean rinse water R 1 .
  • the quantity of water necessary Q n is measured in parallel to reach the standard quantity of water Q R to be brought into the tank in order to reach a predetermined standard level N R.
  • the rinsing cycle is followed by a drying cycle C s after a new emptying V.
  • the rinsing cycle is a standard cycle.
  • the standard rinsing cycle can be limited either to a single rinsing R 1 as illustrated in Figure 2, or to two rinsing phases R 1 and R 2 . In the latter case, the rinse R 2 will be a hot bath.
  • a second additional rinsing R i2 can be programmed.
  • the dishwasher is equipped with a sensor so as to precisely measure the volume of water to be added to the first rinsing bath after having drained the last washing bath.
  • the volumes of water corresponding to the predetermined level N R can for a dishwasher range from 1 to 6 liters
  • the threshold Q i1 can be fixed at an order of magnitude of 0.5 liters and the cumulative precision of the two measurement means must be better than half the threshold value, for example ⁇ 0.15 liter for each.
  • the information provided by the sensor directly informs the programmer who then automatically selects the optimal number of rinses.
  • the sensor can be a small flow meter deposited on the line household appliance water supply.
  • the measurement of the volume of water to be added during the first rinse to top up with water until reaching the standard level of the first rinsing bath can also be carried out thanks to a counter which provides information on the water supply time, done at a regulated flow on arrival of water. If this time is below a critical, predefined threshold, the automation of the machine triggers at least one rinse during the cycle additional.

Landscapes

  • Washing And Drying Of Tableware (AREA)
EP00400424A 1999-02-16 2000-02-15 Verfahren zur Optimierung des Arbeitszyklus einer Spülmaschine und eine dieses Verfahren gebrauchende Spülmaschine Expired - Lifetime EP1029962B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9901860A FR2789568B1 (fr) 1999-02-16 1999-02-16 Procede d'optimisation du cycle de fonctionnement d'un appareil electromenager lavant et appareil utilisant ce procede
FR9901860 1999-02-16

Publications (2)

Publication Number Publication Date
EP1029962A1 true EP1029962A1 (de) 2000-08-23
EP1029962B1 EP1029962B1 (de) 2005-08-17

Family

ID=9542080

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00400424A Expired - Lifetime EP1029962B1 (de) 1999-02-16 2000-02-15 Verfahren zur Optimierung des Arbeitszyklus einer Spülmaschine und eine dieses Verfahren gebrauchende Spülmaschine

Country Status (4)

Country Link
EP (1) EP1029962B1 (de)
DE (1) DE60021930T2 (de)
ES (1) ES2245926T3 (de)
FR (1) FR2789568B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1188409A3 (de) * 2000-09-13 2003-04-02 Whirlpool Corporation Verfahren zum Klarspülen in einer Geschirrspülmaschine
WO2004056255A1 (de) * 2002-12-19 2004-07-08 BSH Bosch und Siemens Hausgeräte GmbH Spülverfahren für eine geschirrspülmaschine sowie geschirrspülmaschine
EP1457152A3 (de) * 2002-11-14 2005-06-29 Whirlpool Corporation Verfahren zum Betreiben einer Geschirrspülmaschine mit einer zentralen Steuerungseinheit durch Trübungsmessung
EP1438920A3 (de) * 2002-11-14 2005-06-29 Whirlpool Corporation Verfahren zum Betreiben einer Geschirrspülmaschine mit einer zentralen Steuerungseinheit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114145686B (zh) * 2021-11-22 2023-09-12 珠海格力电器股份有限公司 洗涤控制方法、装置及洗碗机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0686721A1 (de) * 1994-06-09 1995-12-13 Whirlpool Europe B.V. Verfahren zum Optimieren der Wasserausnutzung in Waschmaschinen
US5720064A (en) * 1995-11-18 1998-02-24 Lg Electronics, Inc. Washing machine water level detecting method using weight sensor
EP0837173A1 (de) * 1996-10-09 1998-04-22 AEG Hausgeräte GmbH Verfahren zur Steuerung des Spülvorganges einer Waschmaschine
US5768729A (en) * 1996-12-19 1998-06-23 Maytag Corporation Adaptive fill control for an automatic washer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4777683A (en) * 1987-12-07 1988-10-18 Pellerin Milnor Corporation Treatment of cloth or other liquid absorbent goods
DE4141213C2 (de) * 1991-12-13 1996-12-12 Bosch Siemens Hausgeraete Verfahren zum Bestimmen der Wäsche-Trockenmasse, des Wasserstands und der gebundenen Flotte in einer Trommelwaschmaschine sowie Waschmaschine zur Durchführung des Verfahrens

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0686721A1 (de) * 1994-06-09 1995-12-13 Whirlpool Europe B.V. Verfahren zum Optimieren der Wasserausnutzung in Waschmaschinen
US5720064A (en) * 1995-11-18 1998-02-24 Lg Electronics, Inc. Washing machine water level detecting method using weight sensor
EP0837173A1 (de) * 1996-10-09 1998-04-22 AEG Hausgeräte GmbH Verfahren zur Steuerung des Spülvorganges einer Waschmaschine
US5768729A (en) * 1996-12-19 1998-06-23 Maytag Corporation Adaptive fill control for an automatic washer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1188409A3 (de) * 2000-09-13 2003-04-02 Whirlpool Corporation Verfahren zum Klarspülen in einer Geschirrspülmaschine
EP1457152A3 (de) * 2002-11-14 2005-06-29 Whirlpool Corporation Verfahren zum Betreiben einer Geschirrspülmaschine mit einer zentralen Steuerungseinheit durch Trübungsmessung
EP1438920A3 (de) * 2002-11-14 2005-06-29 Whirlpool Corporation Verfahren zum Betreiben einer Geschirrspülmaschine mit einer zentralen Steuerungseinheit
US7387688B2 (en) 2002-11-14 2008-06-17 Whirlpool Corporation Method of operating a dishwasher with a central control unit by measuring the turbidity
WO2004056255A1 (de) * 2002-12-19 2004-07-08 BSH Bosch und Siemens Hausgeräte GmbH Spülverfahren für eine geschirrspülmaschine sowie geschirrspülmaschine

Also Published As

Publication number Publication date
DE60021930T2 (de) 2006-06-08
FR2789568A1 (fr) 2000-08-18
FR2789568B1 (fr) 2001-05-04
EP1029962B1 (de) 2005-08-17
DE60021930D1 (de) 2005-09-22
ES2245926T3 (es) 2006-02-01

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