EP2659043B1 - Waschmaschine mit einem leitfähigkeits- und einem temperatursensor - Google Patents

Waschmaschine mit einem leitfähigkeits- und einem temperatursensor Download PDF

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Publication number
EP2659043B1
EP2659043B1 EP11802684.8A EP11802684A EP2659043B1 EP 2659043 B1 EP2659043 B1 EP 2659043B1 EP 11802684 A EP11802684 A EP 11802684A EP 2659043 B1 EP2659043 B1 EP 2659043B1
Authority
EP
European Patent Office
Prior art keywords
washing
electrode
washing tub
washer
detection means
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.)
Not-in-force
Application number
EP11802684.8A
Other languages
English (en)
French (fr)
Other versions
EP2659043A1 (de
Inventor
Ahmet Ferit Cosan
Mustafa Yuksel
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
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Filing date
Publication date
Application filed by Arcelik AS filed Critical Arcelik AS
Publication of EP2659043A1 publication Critical patent/EP2659043A1/de
Application granted granted Critical
Publication of EP2659043B1 publication Critical patent/EP2659043B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A47L15/4297—Arrangements for detecting or measuring the condition of the washing water, e.g. turbidity
    • 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/22—Condition of the washing liquid, e.g. turbidity
    • 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
    • D06F2103/16—Washing liquid temperature
    • 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
    • D06F2103/20—Washing liquid condition, e.g. turbidity

Definitions

  • the present invention relates to a washer comprising a sensor that provides the physical features of the washing environment to be measured.
  • the values of the physical features relating to the environment in the washing tub such as the temperature of the environment in the washing tub, the amount of the gas in the environment, the amount of dirt in the washing liquid, the amount of cleaning agent in the washing liquid, etc. are measured and the washing process is controlled by the control unit such that the best result is obtained. Detecting the said physical features inaccurately decreases the washing performance.
  • the sensor which provides the said physical conditions to be measured by contacting directly the washing environment or the washing liquid, should be electrically insulated from the other electronic elements of the washer.
  • the individual electrical insulation of each sensor causes an increase in the costs. For this reason, in the state of the art, various solutions have been developed for the said problems.
  • a washer which comprises a sensor package that performs conductivity and temperature measurements at the same time.
  • Document EP 2 133 455 A1 discloses a method which involves applying a measurement voltage to electrodes (16), where the electrodes are arranged in a base area (13) of a suds container (2) of a washing machine. An electric field between the electrodes is determined. A measurement for the quantity of suds is assigned to a parameter of the electric field.
  • the base area of the suds container is localized above heaters (20), where the heaters are arranged in the vicinity of deepest points of the suds container.
  • the electrodes are accommodated in a channel-like housing (15).
  • the aim of the present invention is the realization of a washer wherein the temperature of the washing liquid is accurately measured.
  • the washer realized in order to attain the aim of the present invention and explicated in the claims, comprises a detection means which provides the physical features of the washing liquid to be detected by contacting the washing liquid in the washing tub and a temperature sensor that measures the temperature of the electrode of the detection means, which contacts the washing liquid, without contacting it.
  • a temperature sensor that measures the temperature of the electrode of the detection means, which contacts the washing liquid, without contacting it.
  • the temperature sensor is placed near, in the vicinity of the end of the electrode that extends outside the washing tub.
  • the end portion of the electrode outside the washing tub is open and is situated in the detection field of the temperature sensor.
  • the temperature of the end of the electrode that remains outside the washing tub is measured by the temperature sensor in a contactless way.
  • the temperature of the washing liquid contacted by the end of the electrode that extends into the washing tub is indirectly measured.
  • thermopile is used as the temperature sensor.
  • the conductivity value of the washing liquid is measured by the detection means.
  • the measurement is performed by means of two electrodes that extend into the washing tub. One end of the one of the electrodes extends into the washing tub and the other end outside the washing tub.
  • the electrical insulation between the electrodes and the detector circuit is provided by means of a transformer.
  • the end of the electrode that extends outside the washing tub and through which the temperature measurement is performed is painted with a dark color paint.
  • measurement stability is provided.
  • the detection means is placed on the washing tub so as to remain outside the washing tub.
  • the washer of the present invention is suitable for being used as a dishwasher or washing machine.
  • the temperature sensor which provides the temperature measurement to be performed in a contactless way through the electrode of the detection means that contacts the washing liquid, while the detection means used for detecting one of the physical features of the washing liquid contacts the washing liquid and is insulated electrically.
  • the washer (1) of the present invention comprises a washing tub (2) wherein items to be washed are placed, a detection means (3) which provides the physical features of the washing liquid in the washing tub (2) to be detected and a control unit (4) which controls the washing program according to the values of the physical features of the washing liquid measured by the detection means (3) ( Figure 1 and Figure 2 ).
  • the detection means (3) comprises at least one electrode (5) extending into the washing tub (2) and which contacts the washing liquid during the washing process, a detector circuit (6) which evaluates the data coming from the electrode (5) and an electrically isolated carrier (7) which is placed outside the washing tub (2) and whereon the electrode (5) and the detector circuit (6) are situated.
  • One end of the electrode (5) extends into the washing tub (2) and the other end (A) extends outside the carrier (7), towards the environment outside the washing tub (2).
  • the washer (1) comprises a contactless temperature sensor (8) which is placed so as to face the end (A) of the electrode (5) that extends outside the carrier (7), towards the environment outside the washing tub (2) and which detects the temperature of the end of the electrode (5) from the thermal radiation generated by the end of the electrode (5).
  • the detection means (3) provides direct contact with the washing liquid by means of the electrodes (5) and the physical features of the washing liquid are detected through the electrodes (5).
  • the detected values are transmitted to the control unit (4) by the detector circuit (6).
  • the detection circuit (6) is electrically insulated from the control unit (4).
  • the temperature value of the washing liquid is measured by detecting the temperature of the electrode (5), that is the thermal radiation generated by the electrode (5) one end of which contacts the washing liquid and the other end (A) which remains open outside the washing tub (2). Since the temperature sensor (8) does not contact the washing liquid, it is electrically connected directly to the control unit (4), thus there is no need of insulation.
  • the temperature sensor (8) is a thermopile.
  • the detection means (3) detects the conductivity values of the washing liquid.
  • the detection means (3) comprises two electrodes (5) having a distance therebetween and both of which extend into the washing tub (2).
  • the detection means (3) furthermore comprises a transformer (9) which provides the electrical insulation of the detector circuit (6). Electrical insulation is provided between the electrodes (5) that are connected to the secondary winding of the transformer (9) and the detector circuit (6) that is connected to the primary winding of the transformer (9).
  • the end (A) of the electrode (5) that extends outside the carrier (7), towards the environment outside the washing tub (2) is painted with a dark color paint.
  • the electrodes (5) are produced from a metal and glossy material.
  • the detection means (3) is placed on the washing tub (2) so as to remain outside the washing tub (2).
  • the washer (1) is a dishwasher.
  • the washer (1) is a washing machine.
  • the temperature sensor (8) which provides the temperature measurement to be performed in a contactless way through the electrodes (5) of the detection means (3) that contact the washing liquid, while the detection means (3) used for detecting one of the physical features of the washing liquid contacts the washing liquid and is insulated electrically.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Claims (7)

  1. Wasch-/Spülvorrichtung (1), umfassend einen Wasch-/Spülbehälter (2), in den zu waschende/spülende Artikel gegeben werden, ein Erkennungsmittel (3), das wenigstens eine Elektrode (5), die sich in den Wasch-/Spülbehälter (2) erstreckt und während des Wasch-/Spülvorgangs in Kontakt mit der Wasch-/Spülflüssigkeit steht, eine Detektorschaltung (6), die die Daten von der Elektrode (5) auswertet, und einen elektrisch isolierten Träger (7) aufweist, der außerhalb des Wasch-/Spülbehälters (2) angeordnet ist und an dem die Elektrode (5) und die Detektorschaltung (6) angeordnet sind und der dafür sorgt, dass die physikalischen Merkmale der Wasch-/Spülflüssigkeit im Wasch-/Spülbehälter (2) erkannt werden, und eine Steuereinheit (4), die das Waschprogramm entsprechend den Werten der physikalischen Merkmale der Wasch-/Spülflüssigkeit steuert, die von dem Erkennungsmittel (3) gemessen werden, dadurch gekennzeichnet, dass ein Ende der Elektrode (5) sich in den Wasch-/Spülbehälter (2) und das andere Ende (A) aus dem Träger (7) heraus in die Umgebung außerhalb des Wasch-/Spülbehälters (2) erstreckt, und durch einen kontaktlosen Temperatursensor (8), der derart angeordnet ist, dass er dem Ende (A) der Elektrode (5), das sich in die Umgebung außerhalb des Wasch-/Spülbehälters (2) erstreckt, zugewandt ist und die Temperatur des Endes der Elektrode (5) anhand der Wärmestrahlung erkennt, die von dem Ende der Elektrode (5) erzeugt wird.
  2. Wasch-/Spülvorrichtung (1) nach Anspruch 1, dadurch gekennzeichnet, dass der Temperatursensor (8) eine Thermosäule ist.
  3. Wasch-/Spülvorrichtung (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Erkennungsmittel (3) zwei Elektroden (5) mit einem Abstand dazwischen, die sich beide in den Wasch-/Spülbehälter (2) erstrecken, und einen Transformator (9) umfasst, der für die elektrische Isolierung der Detektorschaltung (6) sorgt und die Leitfähigkeitswerte der Wasch-/Spülflüssigkeit erkennt.
  4. Wasch-/Spülvorrichtung (1) nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Ende (A) der Elektrode (5), das sich in die Umgebung außerhalb des Wasch-/Spülbehälters (2) erstreckt, mit einer dunklen Farbe lackiert ist.
  5. Wasch-/Spülvorrichtung (1) nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Erkennungsmittel (3) derart am Wasch-/Spülbehälter (2) angeordnet ist, dass es außerhalb des Wasch-/Spülbehälters (2) bleibt.
  6. Wasch-/Spülvorrichtung (1) nach einem der vorangehenden Ansprüche, die eine Spülmaschine ist.
  7. Wasch-/Spülvorrichtung (1) nach einem der Ansprüche 1 bis 5, das eine Waschmaschine ist.
EP11802684.8A 2010-12-29 2011-12-07 Waschmaschine mit einem leitfähigkeits- und einem temperatursensor Not-in-force EP2659043B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201011096 2010-12-29
PCT/EP2011/072070 WO2012089471A1 (en) 2010-12-29 2011-12-07 A washer comprising a conductivity and temperature sensor

Publications (2)

Publication Number Publication Date
EP2659043A1 EP2659043A1 (de) 2013-11-06
EP2659043B1 true EP2659043B1 (de) 2015-09-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP11802684.8A Not-in-force EP2659043B1 (de) 2010-12-29 2011-12-07 Waschmaschine mit einem leitfähigkeits- und einem temperatursensor

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EP (1) EP2659043B1 (de)
WO (1) WO2012089471A1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110130041B (zh) * 2019-03-27 2020-12-01 永康仁诒电子科技有限公司 一种衬衫领袖口清洗机

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007077170A2 (en) 2006-01-05 2007-07-12 Arcelik Anonim Sirketi A household appliance
DE102006025622A1 (de) 2006-05-24 2007-11-29 E.G.O. Elektro-Gerätebau GmbH Sensoreinrichtung zur Leitfähigkeitsmessung und Verfahren zu ihrem Betrieb
DE102008028030A1 (de) * 2008-06-12 2009-12-24 BSH Bosch und Siemens Hausgeräte GmbH Verfahren und Einrichtung zum Bestimmen von Schaum in einer Waschmaschine

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WO2012089471A1 (en) 2012-07-05
EP2659043A1 (de) 2013-11-06

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