EP0920591B1 - Procede de commande electronique de pompes de vidange utilisees dans des appareils electriques menagers - Google Patents

Procede de commande electronique de pompes de vidange utilisees dans des appareils electriques menagers Download PDF

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Publication number
EP0920591B1
EP0920591B1 EP98932707A EP98932707A EP0920591B1 EP 0920591 B1 EP0920591 B1 EP 0920591B1 EP 98932707 A EP98932707 A EP 98932707A EP 98932707 A EP98932707 A EP 98932707A EP 0920591 B1 EP0920591 B1 EP 0920591B1
Authority
EP
European Patent Office
Prior art keywords
loaded
drain pump
microprocessor
current
unloaded
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.)
Expired - Lifetime
Application number
EP98932707A
Other languages
German (de)
English (en)
Other versions
EP0920591A1 (fr
Inventor
Semsettin Eksert
Ibrahim Ugurlu
Faruk Tan
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.)
Arcelik AS
Original Assignee
Arcelik 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 Arcelik AS filed Critical Arcelik AS
Publication of EP0920591A1 publication Critical patent/EP0920591A1/fr
Application granted granted Critical
Publication of EP0920591B1 publication Critical patent/EP0920591B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/083—Liquid discharge or recirculation arrangements
    • D06F39/085—Arrangements or adaptations of pumps
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/47—Responding to irregular working conditions, e.g. malfunctioning of pumps 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
    • F04D15/0209—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid
    • F04D15/0218—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid the condition being a liquid level or a lack of liquid supply
    • F04D15/0236—Lack of liquid level being detected by analysing the parameters of the electric drive, e.g. current or power consumption
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/44—Current or voltage
    • D06F2103/48—Current or voltage of the motor driving the pump
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/58—Indications or alarms to the control system or to the user
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/50—Control of washer-dryers characterised by the purpose or target of the control
    • D06F33/72—Control of the energy or water consumption

Definitions

  • the invention is related to a method that provides electronic control of working periods of the synchronous or asynchronous drain pump motors used in electrical home appliances such as dish washing machines and washing machines.
  • the drain pump In the control systems of the existing dish washing and washing machines, the drain pump is in operated along a fixed operating time period at places required by the washing program. This fixed time period, is over the time needed to drain the water out by the drain pump under normal conditions. For example, a drain pump of 16 liters/minute, can empty the water content of 5 liters of water in a washing machine in a short time period but, it is operated for a fixed time period of 1 minute. Similarly, drain pumps are operated half or more of the operating periods in the existing control systems without need for it. This unnecessary operation, despite water is drained by the drain pump, continues without water. to complete the operation period.
  • a water-level detector is used to avoid the drain pump to operate when the water level in the tub reaches to zero.
  • the drain pump operating without water is forming the highest source of noise in the machine that is sucking air from it. Despite there is no water in the machine, the drain pump continues to operate and results in unnecessary energy consumption. For example, in normal" program of dish washing machine. a drain pump of 34W power operating at an average of 5.5 minutes, uses 3.2 wH energy. The drain pump when operated without need for it at 50% of this period. 1.6 wH unnecessary energy consumption is faced with.
  • the drain pump draws different currents from the network while there is water in the machine (loaded) and while there is no water in it (unloaded). For example. a drain pump of 34W, if started to operate with a load over 3.5 liters, draws more or less 125 mA current but after the water in the machine is drained, the current drawn by the pump from the network is decreased to about 110 mA.
  • the objective of this invention is to provide a method by taking the difference of current drawn from the network by the drain pump while operating with and without load as the base, is to control the pump operating time, the values of the current drawn by the pump with electronic control and in parallel to this, to prevent the energy consumption arising out of unnecessary operation, to decrease the noise and to shorten the duration of the program.
  • drain pump is controlled by a microprocessor(1).
  • a microprocessor(1) To realize this, laboratory experiments are carried out and the difference of the currents drawn by the pump while operating with and without load are recorded. These values are saved to the memory of a microprocessor (1).
  • a circuit formed by a "manganin based resistance”(3), a “op-amp”(4) and a “AC-DC converter”(5) is used ( Figure 1).
  • a " current transformer”(6) or a “Hall effect transistor” (7) can also be used.
  • a directly proportional voltage is formed on the manganin based resistance (3) which is connected to the line from the drain pump (2) over the microprocessor (1).
  • This voltage is transmitted to a op-amp (4) circuit such that the highest value is increased to 5V AC.
  • the voltage increasing at 0-5 V AC level in Op-amp (4) circuit is converted into direct voltage in the AC-DC converter (5) circuit and transmitted to the microprocessor(1).This information coming into the microprocessor(1) as analog is later converted into digital information. If the voltage transmitted to microprocessor (1) is constantly above 5V, it means that the drain pump (2) is blocked.
  • the current drawn is started to be measured.
  • This time period being dependent on take off time of the pump, may change between 5-10 seconds.
  • This measurement period changes depending on the microprocessor and software used. In the present method, the time required for this is 640 ⁇ s with PIC 16C74 microprocessor.
  • the values recorded during the first five seconds after starting the measurements are compared with each other and the largest value is saved in the memory as the operation loaded value (I' loaded ). To compare the values with each other, a time period which is different from five seconds, may be preferred.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)

Claims (3)

  1. Une méthode contrôle pour des pompes de drainage utilisée dans des appareils électriques domestiques, comportant un microprocesseur (1), un programme et des valeurs de référence obtenues comme résultat d'expériences de laboratoire et qui sont stockées dans le microprocesseur (1), caractérisée par les étapes consistant à ;
    sauvegarder la valeur obtenue pour les courants obtenus par la pompe de drainage lors de son fonctionnement à l'état chargé et à l'état non chargé sous forme d'un rapport du type (I chargé/I non chargé) dans le microprocesseur (1) en même temps que le programme à utiliser ;
    démarrer la mesure du courant tiré au cours de l'utilisation de la machine en tant que période de démarrage telle que (5 à 10 secondes) de la pompe de drainage ;
    sauvegarder la valeur la plus élevée qui est obtenue par comparaison entre les valeurs obtenues dans les cinq premières secondes ou pendant une période de temps différente en tant que mesure du courant de fonctionnement à l'état chargé (I' chargé) dans la mémoire,
    comparer le courant de fonctionnement à l'état chargé (I' chargé) avec chaque valeur mesurée et comparer le rapport obtenu (I' chargé / I mesuré) avec les valeurs sauvegardées précédemment dans le microprocesseur comme résultat des expériences de laboratoire ;
    à stopper la machine quand l'équivalence I' chargé / I mesuré ≥ (I chargé / I déchargé) est atteinte en supposant que la pompe de drainage fonctionne à l'état non chargé.
  2. Une méthode selon la revendication 1 dans laquelle, en vue de mesurer le courant utilisé par la pompe de drainage,
    un circuit se composant d'une « op-amp » (4) et un « convertisseur AC-DC » (5) est utilisé en même temps qu'une « résistance à base de manganine » (3) ou un « transformateur de courant » (6) ou un « transistor à effet de Hall »(7) est connecté en série avec la ligne électrique de la pompe de drainage (2) ;
    le voltage formé sur la « résistance à base de manganine » (3) ou le « transformateur de courant » (6) ou le « transistor à effet de Hall » (7) est accru de manière telle que la valeur maximale est de 5 V sur le « op-amp » (4) ;
    le courant accru de 0-5 V AC sur le circuit op-amp (4) est converti en courant continu (DC) et transmis au microprocesseur (1) ;
    les données numériques analogiques sont converties en données numériques digitales.
  3. Une méthode selon la revendication 2 caractérisée par le fait que quand le voltage fourni au microprocesseur (1) dépasse de manière permanente 5 V, il est décidé que la pompe de drainage (2) est bloquée et que l'utilisateur en est informé par tout moyen d'avertissement.
EP98932707A 1997-06-20 1998-06-19 Procede de commande electronique de pompes de vidange utilisees dans des appareils electriques menagers Expired - Lifetime EP0920591B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
TR97/00528A TR199700528A2 (xx) 1997-06-20 1997-06-20 Elektrikli ev aletlerinde kullan�lan tahliye pompalar� i�in elektronik kontrol y�ntemi.
TR9700528 1997-06-20
PCT/TR1998/000011 WO1998059174A1 (fr) 1997-06-20 1998-06-19 Procede de commande electronique de pompes de vidange utilisees dans des appareils electriques menagers

Publications (2)

Publication Number Publication Date
EP0920591A1 EP0920591A1 (fr) 1999-06-09
EP0920591B1 true EP0920591B1 (fr) 2003-06-04

Family

ID=21621188

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98932707A Expired - Lifetime EP0920591B1 (fr) 1997-06-20 1998-06-19 Procede de commande electronique de pompes de vidange utilisees dans des appareils electriques menagers

Country Status (7)

Country Link
EP (1) EP0920591B1 (fr)
AT (1) ATE242430T1 (fr)
AU (1) AU8252598A (fr)
DE (1) DE69815261T2 (fr)
ES (1) ES2201510T3 (fr)
TR (1) TR199700528A2 (fr)
WO (1) WO1998059174A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8793828B2 (en) 2010-04-13 2014-08-05 Whirlpool Corporation Laundry treating appliance with automatic pump shutoff

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6227808B1 (en) * 1999-07-15 2001-05-08 Hydroair A Unit Of Itt Industries Spa pressure sensing system capable of entrapment detection
EP1638201B1 (fr) * 2003-10-07 2009-04-08 Askoll Holding S.r.l. Appareil électronique controllant une pompe de décharge entraînée par un moteur synchrone à aimants permanents
GB2446370A (en) * 2007-02-07 2008-08-13 Dlp Ltd Shower waste pump and supply control
WO2011106530A1 (fr) 2010-02-25 2011-09-01 Hayward Industries, Inc. Monture universelle pour interface utilisateur d'entraînement de pompe à vitesse variable
AU2014228186B2 (en) 2013-03-15 2019-11-07 Hayward Industries, Inc. Modular pool/spa control system
US9609997B2 (en) 2013-07-09 2017-04-04 Haier Us Appliance Solutions, Inc. Systems and methods for detecting appliance pump cavitation or dry state
US9840803B2 (en) 2015-10-20 2017-12-12 Haier Us Appliance Solutions, Inc. Pump assembly for appliance
US11720085B2 (en) 2016-01-22 2023-08-08 Hayward Industries, Inc. Systems and methods for providing network connectivity and remote monitoring, optimization, and control of pool/spa equipment
US20170212536A1 (en) 2016-01-22 2017-07-27 Hayward Industries, Inc. Systems and Methods for Providing Network Connectivity and Remote Monitoring, Optimization, and Control of Pool/Spa Equipment
US10718337B2 (en) 2016-09-22 2020-07-21 Hayward Industries, Inc. Self-priming dedicated water feature pump
CN109267290B (zh) * 2018-10-30 2023-06-23 青岛海尔洗衣机有限公司 一种洗衣机控制方法及洗衣机

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2534287B1 (fr) * 1982-10-11 1984-11-23 Labo Electronique Physique
DE3440977C2 (de) * 1984-11-09 1986-10-02 Loewe Pumpenfabrik GmbH, 2120 Lüneburg Anordnung zum automatischen Ein- und Ausschalten von Flüssigkeitspumpen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8793828B2 (en) 2010-04-13 2014-08-05 Whirlpool Corporation Laundry treating appliance with automatic pump shutoff

Also Published As

Publication number Publication date
DE69815261D1 (de) 2003-07-10
DE69815261T2 (de) 2004-05-06
TR199700528A3 (tr) 1999-10-21
WO1998059174A1 (fr) 1998-12-30
EP0920591A1 (fr) 1999-06-09
ATE242430T1 (de) 2003-06-15
ES2201510T3 (es) 2004-03-16
TR199700528A2 (xx) 1999-10-21
AU8252598A (en) 1999-01-04

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