EP2160970A2 - Procédé de détection du poids pour lave-vaisselle - Google Patents

Procédé de détection du poids pour lave-vaisselle Download PDF

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Publication number
EP2160970A2
EP2160970A2 EP09167676A EP09167676A EP2160970A2 EP 2160970 A2 EP2160970 A2 EP 2160970A2 EP 09167676 A EP09167676 A EP 09167676A EP 09167676 A EP09167676 A EP 09167676A EP 2160970 A2 EP2160970 A2 EP 2160970A2
Authority
EP
European Patent Office
Prior art keywords
water
machine
level
rack
tube
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
EP09167676A
Other languages
German (de)
English (en)
Other versions
EP2160970A8 (fr
EP2160970A3 (fr
EP2160970B1 (fr
Inventor
Evren Bal
Mehmet Eldem
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.)
Vestel Beyaz Esya Sanayi ve Ticaret AS
Original Assignee
Vestel Beyaz Esya Sanayi ve Ticaret AS
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 Vestel Beyaz Esya Sanayi ve Ticaret AS filed Critical Vestel Beyaz Esya Sanayi ve Ticaret AS
Publication of EP2160970A2 publication Critical patent/EP2160970A2/fr
Publication of EP2160970A3 publication Critical patent/EP2160970A3/fr
Publication of EP2160970A8 publication Critical patent/EP2160970A8/fr
Application granted granted Critical
Publication of EP2160970B1 publication Critical patent/EP2160970B1/fr
Not-in-force 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
    • 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
    • A47L2401/04—Crockery or tableware details, e.g. material, quantity, condition
    • 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
    • A47L2501/05—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
    • A47L2501/20—Spray nozzles or spray arms
    • 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
    • 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
    • A47L2501/32—Stopping or disabling machine operation, including disconnecting the machine from a network, e.g. from an electrical power supply

Definitions

  • the present invention relates to dishwashers that sense the dish load on upper and lower racks individually.
  • the load sensing systems in dishwashers are realized by means of sensors disposed in the machine. These systems can be exemplified with the published patent applications DE10253017 and EP1252857 , in which the measurement is made according to the dirtiness of water that is used.
  • load sensing is conducted by instantaneously monitoring the water level in the machine. This sensing can also be made separately for each rack.
  • water-level measuring units are employed on the washing system of the machine.
  • a tube of a length that corresponds to the distance between the lower starting point and the top ending level of the pool water level and a floating element, which comprise a magnetic core or whose material has magnetic features, is provided in said tube.
  • Water in the tube moves the floating element according to the water's buoyancy force principle.
  • the movement of the floating part in the tube (the level of water) is sensed by a coil system with a magnetic reader, coiled around the tube.
  • the water level is read with the aid of a presostate, which is placed at the tip of a tube that is in connection with the pool.
  • the presostate transmits signals of different frequencies, so that the water level can be determined.
  • the control unit of the dishwasher conducts the entire control of the machine, such as operating the valves, pumps, and heaters, and managing the program steps, etc., and additionally, it determines the dish load with the aid of water level measuring units and the washing system.
  • the water level in the pool of the machine is measured instantaneously, such measured instant values are reported to the control unit, so that the machine, by itself, measures instant water losses and accordingly determines the load rate, automatically senses the distribution of this load to the lower and upper racks, and carries out the washing steps by means of a predefined algorithm according to this load.
  • the load density of dishes placed in the machine's lower and upper racks can be calculated.
  • the washing intensity at that part is increased, such that a more efficient washing is ensured and the washing performance is developed.
  • the machine is enabled to make the program selection automatically, so that once the washing step is determined, the determination of the load levels of dishes placed into the machine is taken over from the user's initiative.
  • any abnormal water level alterations e.g. any uncontrolled intake of water into the machine, or the case in which pans or similar utensils in the machine are turned upside down so that their interior is filled with water, are sensed automatically.
  • the machine does not proceed with the normal washing step, but generates an error signal to the user.
  • the dishwasher may face difficulties in draining out the water.
  • the water level is measured during the draining-out period as well, and when the drained-out amount of water is not in compliance with what has been determined by this period, this case is interpreted as a potential filter occlusion or extreme foam formation, so that the machine is stopped and an error signal is generated for the user.
  • An aim of this invention is to ensure the calculation of the dish load by instantaneously measuring the water level in the dishwasher.
  • Another aim of this invention is to ensure the determination of the load density of dishes placed in the dishwasher for the upper rack and for the lower rack separately.
  • a further aim of the invention is to enable the dishwasher to determine the dishwasher load by itself.
  • Yet another aim of the present invention is to enable the dishwasher to automatically determine the washing steps according to the load density present at the lower and upper racks and to conduct washes at differing intensities at the lower and upper racks.
  • Yet another aim of the present invention is to make it possible to easily adapt the water-level measuring units to currently-used dishwashers.
  • Still another aim of the present invention is to provide a load sensing system for currently-used dishwashers, by making use of the current components of such currently-used dishwashers and of inexpensive and reliable water-level measuring units.
  • the operation of the washing system of a standard dishwasher is as follows. Before washing is started, the water taken into the machine from the mains via the valves is filled into a pool (7), including the machine' s filter system (6) as well. After a certain volume of water is taken in, the mains supply is cut off, then the water in the pool (7) is sucked by means of a pump (1) and passed through a heater (3) by means of an interconnection tube (2). Heated water is directed to the nozzle tubes (8) in connection with the upper nozzles (5) and lower nozzles (4) over the pool.
  • the washing operation is carried out by delivering the water, which is pressurized by means of the washing pump (1), to the dishes from the lower nozzles (4) and upper nozzles (5).
  • Water output from the pump (1) can be separately guided to the lower and upper nozzles (4, 5). This operation can be made by means of a part, i.e. a divisor.
  • the water level present in the machine pool (7) can be read by two alternative applications.
  • a tube (23) is disposed, which is in connection with the pool (7), and has a length that corresponds to the distance from the lowest starting point to the top ending level of the machine's water level.
  • a floating element (32) which comprise a magnetic core or whose material has magnetic features. Water in the tube (23) moves the floating element (32) according to the water's buoyancy force principle.
  • the water level in the machine is read by means of a presostate (41) disposed at the tip of the tube (23) (by referring to water pressure).
  • the water level data read by means of the coil (31) or the presostate (41) is instantly reported to the machine's control panel.
  • the control unit of the dishwasher conducts the entire control of the machine, such as operating the valves, pumps, and heaters, and managing the program steps, etc., and additionally, it determines the dish load with the aid of said water-level measuring units and the washing system.
  • the water level in the machine is measured by any of the foregoing water level measurement approaches (presostate (41) or coil (31)), and this measurement result is reported to the machine's control unit.
  • the initial water level is the level (a) illustrated in Figure 2 .
  • the pump (1) is stopped, and waited for a certain period of time so that the water present at the upper rack (21) drains away, and then the water level is measured once more.
  • This measured value is the level (b) illustrated in Figure 2 . Since the dishes present at the machine's upper rack (21) shall retain some amount of water, the second measured value (level b) is lower than the first measured value (value a).
  • the dish load present at the upper rack (21) is determined by the control unit according to the difference between these two values.
  • the load density at the machine's upper rack (21) is revealed according to the extent of water loss.
  • the pump (1) is stopped, a certain time is allowed for the water present at the lower rack (22) to drain away, and then the water level is measured once more.
  • This measured value is the level (c) illustrated in Figure 2 . Since the dishes present at the machine's lower rack (22) shall likewise retain some amount of water, the third measured value (level c) will be lower than the second measured value (value b).
  • the dish load present at the lower rack (22) is determined by the control unit according to the difference between these two values.
  • the load density at the machine's lower rack (22) is similarly revealed according to the extent of water loss.
  • the machine's control unit can automatically change the wash algorithm according to the load density.
  • the wash to be conducted at the upper rack (21) may have a differing intensity from that to be conducted at the lower rack (22).
  • Maximum water loss and minimum water loss data are loaded in advance onto the control unit as reference values for determining the load density.
  • the machine decides on the extent of density of the load, according to the extent of water loss as measured by referring to these values. So the present invention enables the dishwasher to conduct each operation by itself for measuring the load and takes over the determination of the load density from the user's initiative.
  • any abnormal water level alterations e.g. any uncontrolled intake of water into the machine, or the case in which pans or similar utensils in the machine are turned upside down so that their interior is filled with water, are sensed automatically.
  • the machine does not proceed with the normal washing step, but generates an error signal for the user.
  • the dishwasher may face difficulties in draining out the water.
  • the water level is measured during the draining-out period as well, and when the amount of water drained-out does not correspond to what has been determined by this period, this case is interpreted as a potential filter occlusion or extreme foam formation, so that the machine is stopped and an error signal is generated for the user.

Landscapes

  • Washing And Drying Of Tableware (AREA)
EP09167676A 2008-09-05 2009-08-12 Procédé de détection du poids pour lave-vaisselle Not-in-force EP2160970B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TR2008/06744A TR200806744A2 (tr) 2008-09-05 2008-09-05 Bulaşık makinaları için yük algılama yöntemi

Publications (4)

Publication Number Publication Date
EP2160970A2 true EP2160970A2 (fr) 2010-03-10
EP2160970A3 EP2160970A3 (fr) 2011-05-18
EP2160970A8 EP2160970A8 (fr) 2011-10-19
EP2160970B1 EP2160970B1 (fr) 2012-03-21

Family

ID=41531813

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09167676A Not-in-force EP2160970B1 (fr) 2008-09-05 2009-08-12 Procédé de détection du poids pour lave-vaisselle

Country Status (3)

Country Link
EP (1) EP2160970B1 (fr)
AT (1) ATE549963T1 (fr)
TR (1) TR200806744A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015197139A1 (fr) * 2014-06-27 2015-12-30 Electrolux Appliances Aktiebolag Lave-vaisselle et son procédé de fonctionnement
CN105496333A (zh) * 2016-02-02 2016-04-20 长沙高汇环保科技有限公司 清洁设备自动平衡装置
CN110623613A (zh) * 2018-06-22 2019-12-31 青岛海尔智能技术研发有限公司 洗碗机洗涤控制方法和洗碗机

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1252857A2 (fr) 2001-04-24 2002-10-30 Miele & Cie. GmbH & Co. Capteur de turbidité pour mesurer la turbidité dans le liquide de lavage d'un lave-vaiselle
DE10253017A1 (de) 2002-11-14 2004-06-03 Whirlpool Corp., Benton Harbor Verfahren zum Betreiben einer Geschirrspülmaschine mit einer zentralen Steuereinheit

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2574645A1 (fr) * 1984-12-14 1986-06-20 Esswein Sa Procede de determination de la charge en vaisselle, et lave-vaisselle mettant en oeuvre un tel procede
DE19505552A1 (de) * 1995-02-18 1996-08-22 Aeg Hausgeraete Gmbh Verfahren zum Betreiben einer Geschirrspülmaschine
DE10233278B4 (de) * 2002-07-23 2004-12-30 Whirlpool Corp., Benton Harbor Wasch- oder Spülmaschine
DE10246016A1 (de) * 2002-10-02 2004-04-15 Electrolux Home Products Corporation N.V. Geschirrspülmaschine und Verfahren zur Erfassung der Spülgut-Beladungsmenge

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1252857A2 (fr) 2001-04-24 2002-10-30 Miele & Cie. GmbH & Co. Capteur de turbidité pour mesurer la turbidité dans le liquide de lavage d'un lave-vaiselle
DE10253017A1 (de) 2002-11-14 2004-06-03 Whirlpool Corp., Benton Harbor Verfahren zum Betreiben einer Geschirrspülmaschine mit einer zentralen Steuereinheit

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015197139A1 (fr) * 2014-06-27 2015-12-30 Electrolux Appliances Aktiebolag Lave-vaisselle et son procédé de fonctionnement
CN106455900A (zh) * 2014-06-27 2017-02-22 伊莱克斯电器股份公司 洗碗机以及操作洗碗机的方法
US20170119232A1 (en) * 2014-06-27 2017-05-04 Electrolux Appliances Aktiebolag Dishwasher and method of operating the dishwasher
CN106455900B (zh) * 2014-06-27 2019-10-18 伊莱克斯电器股份公司 洗碗机以及操作洗碗机的方法
US11076742B2 (en) 2014-06-27 2021-08-03 Electrolux Appliances Aktiebolag Dishwasher and method of operating the dishwasher
CN105496333A (zh) * 2016-02-02 2016-04-20 长沙高汇环保科技有限公司 清洁设备自动平衡装置
CN105496333B (zh) * 2016-02-02 2018-02-06 长沙高汇环保科技有限公司 清洁设备自动平衡装置
CN110623613A (zh) * 2018-06-22 2019-12-31 青岛海尔智能技术研发有限公司 洗碗机洗涤控制方法和洗碗机

Also Published As

Publication number Publication date
EP2160970A8 (fr) 2011-10-19
TR200806744A2 (tr) 2010-03-22
ATE549963T1 (de) 2012-04-15
EP2160970A3 (fr) 2011-05-18
EP2160970B1 (fr) 2012-03-21

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