EP2918214B1 - Lave-vaisselle - Google Patents

Lave-vaisselle Download PDF

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Publication number
EP2918214B1
EP2918214B1 EP15157330.0A EP15157330A EP2918214B1 EP 2918214 B1 EP2918214 B1 EP 2918214B1 EP 15157330 A EP15157330 A EP 15157330A EP 2918214 B1 EP2918214 B1 EP 2918214B1
Authority
EP
European Patent Office
Prior art keywords
door
dishwasher
peak
axis
sensor
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.)
Active
Application number
EP15157330.0A
Other languages
German (de)
English (en)
Other versions
EP2918214A3 (fr
EP2918214A2 (fr
Inventor
Mario Biancospino
Alberto Gasparini
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.)
Whirlpool EMEA SpA
Original Assignee
Whirlpool EMEA SpA
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 Whirlpool EMEA SpA filed Critical Whirlpool EMEA SpA
Publication of EP2918214A2 publication Critical patent/EP2918214A2/fr
Publication of EP2918214A3 publication Critical patent/EP2918214A3/fr
Application granted granted Critical
Publication of EP2918214B1 publication Critical patent/EP2918214B1/fr
Active 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
    • A47L15/4251—Details of the casing
    • A47L15/4257—Details of the loading door
    • A47L15/4259—Arrangements of locking or security/safety devices for doors, e.g. door latches, switch to stop operation when door is open
    • 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
    • A47L15/0049—Detection or prevention of malfunction, including accident prevention
    • 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
    • A47L15/4293—Arrangements for programme selection, e.g. control panels; Indication of the selected programme, programme progress or other parameters of the programme, e.g. by using display panels
    • 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
    • A47L15/4251—Details of the casing
    • A47L15/4257—Details of the loading door
    • A47L15/4263—Door sealing 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
    • 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
    • A47L2401/26—Loading door status, e.g. door latch opened or closed state
    • 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
    • A47L2401/32—Vibration or sound detection
    • 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 a dishwasher.
  • Dishwashers comprising a contact sensor which signals opening of the dishes introduction/extraction door are well known.
  • Said sensor comprises two conductor elements positioned on the door.
  • the dishwasher comprises a striking portion which in the closed position encounters the door.
  • This striking portion comprises a lance which when the door is closed places the two conductor elements in contact with each other. When the door is open the two conductor elements are distant from each other and this determines interruption of the passage of electrical current between them.
  • Document DE102010015849 discloses a dishwasher provided with a tilt sensor which detects the position of the door; the tilt sensor is used to turn on an illumination device when the door has been opened to an angle of at least 45°.
  • the technical task at the basis of the present invention is to propose a dishwasher enabling the components of it to be optimised, reducing its costs and overall dimensions.
  • reference number 1 denotes a dishwasher comprising:
  • the door 3 giving access to the washing compartment 2 enables introduction and extraction of the dishes from the washing compartment 2.
  • the door 3 comprises a sensor 4 which takes a measurement representing the gravity acceleration component at least along a first axis 40 which is integral with the door 3.
  • the sensor 4 measures the gravity acceleration component at least along a first axis 40 which is integral with the door 3 or a value proportionate to it. This enables detection of the inclination of the door 3 and/or abnormal internal vibrations and/or shocks from the outside and associated with predetermined user commands.
  • Said sensor 4 is normally indicated in the technical sector as an accelerometer (for example, said accelerometer is the MEMS type).
  • the sensor 4 is identified by the acronym LSM303DLHC and is supplied by ST Microelectronics.
  • the door 3 is substantially parallel to a placement plane 31, said placement plane 31 being integral to the door 3.
  • the first axis 40 is at a right angle to the placement plane 31.
  • the gravity acceleration component along the first axis 40 is minimum in absolute value (even being zero) when the door is closed in a substantially vertical position, whilst it is maximum in absolute value when the door 3 is open in a horizontal position.
  • Advancement as a function of time of the gravity acceleration component along the first axis 40 is illustrated in figure 5 in the case of a cycle with full load without detergent and in figure 8 in the case of a cycle without load with detergent. In the cycle with full load, the machine is more silent and presents lower vibrations compared with the cycle with no load.
  • the peaks indicated in figures 5 and 8 with references 100, 200, 300 refer to opening of the door.
  • the peaks indicated in figure 5 with references 101, 201, 301, 401 refer each to the shock which accompanies closing of the door.
  • Figure 9 shows an enlarged view of figure 8 and shows the transient which accompanies opening of the door 3.
  • the duration of the transient depends on the speed of opening of the door 3 (for example, said transient having a duration of 1.5 seconds).
  • the difference in the signal detected in normal operation before and after the transient depends on the degree of opening of the door 3.
  • the sensor 4 may also detect the gravity acceleration component along a second axis 41 which is integral with the door 3.
  • second axis 41 is at a right angle to the first axis 40 (advancement as a function of time of the gravity acceleration component along the second axis 41 is illustrated in figure 3 in the case of a cycle with full load without detergent and in figure 6 in the case of a cycle without load with detergent).
  • the second axis 41 is vertical when the door 3 is closed.
  • the sensor 4 is capable of detecting the gravity acceleration component along a third axis 42 which is integral with the door 3.
  • the third axis 42 is at a right angle to the first and to the second axis 40, 41 (advancement as a function of time of the gravity acceleration component along the third axis 42 is illustrated in figure 4 in the case of a cycle with full load without detergent and in figure 7 in the case of a cycle without load with detergent).
  • the first and the second and the third axes 40, 41, 42 are at right angles two by two. They define a Cartesian triad.
  • the third axis 42 is parallel to the axis of rotation 30. Figures 3,4,5 , therefore illustrate the signal detected by the sensor 4 in the same time interval along the three right-angled axes indicated above.
  • the signal of figure 5 is the one best usable to control opening of the door 3 and/or the degree of opening of the door 3 and/or closure of the door 3.
  • the signals of figures 4 and 7 being detected along a parallel axis to the axis of rotation 30 do not, on the other hand, provide indications on the degree of opening of the door 3. What is indicated with reference to figures 3,4,5 may be repeated for figures 6,7,8 , taking into account the different type of cycle.
  • the first axis 40 is not parallel to said axis of rotation 30.
  • the gravity component along said axis 30 would be virtually constant (except for perhaps detecting vibrations at the moment when the door 3 comes into contact with or is disconnected from a first part of the dishwasher, said first part surrounding an opening of the washing compartment 2 and encountering the door 3 in a closed position).
  • the sensor 4 is integrated in door 3 position detection means. Every inclination of the door 3 relative to the horizontal position is therefore associated with a corresponding value of the gravity acceleration component along the first axis 40 and the sensor 6 enables determination of a parameter, typically an electrical parameter, associated with said value.
  • the senor 4 is integrated in a user interface which detects one or more shocks from the outside and associated with predetermined user commands. This function therefore enables a user to dialogue with the dishwasher in an extremely simplified and rapid manner, using a pre-coded code.
  • this function is particularly useful in the case of a fully integrated dishwasher.
  • a display visible from the outside is not present.
  • This causes difficulties in dialoguing with the dishwasher 1, for example there are difficulties for the user in understanding when the washing cycle is complete.
  • Using the present invention it is possible to communicate with the dishwasher 1, even in the absence of visible buttons or switches and without the need to open the door 3.
  • the dishwasher 1 may also comprise acoustic means or lights (typically of modest dimensions) capable of responding to prompts of the user.
  • acoustic means or lights typically of modest dimensions
  • the user by hitting the door 3 and causing the sensor 4 to vibrate with a predetermined prompt (for example, two consecutive taps) may send a request for information to the dishwasher 1 (for example: is the washing cycle finished?).
  • the dishwasher 1 may respond with a prerecorded voice message or a predetermined acoustic signal.
  • the sensor 4 is integrated in abnormal vibration detection means.
  • the vibrations are in any case picked up by the sensor 4.
  • the sensor 4 could therefore pick up abnormal vibrations which could signify a malfunction or warn of an imminent breakage.
  • the frequency of moving elements forming part of the dishwasher 1 is well known (for example, should the rotating spray arms positioned in the washing compartment come into contact with the dishes, vibrations would be produced which could be transmitted through structures of the dishwasher 1 and therefore detected by the sensor 4).
  • the abnormal vibration detection means comprise signalling devices capable of communicating the anomaly to a user and, in the most serious cases, could even stop functioning of the dishwasher 1.
  • the dishwasher 1 comprises means of release/retention of the door 3 to remaining parts of the dishwasher (for example a hook). These means of release/retention of the door 3 compress a seal when the door 3 is closed; when the door 3 is closed, said seal remains positioned between the door 3 and the remaining parts of the dishwasher 1, guaranteeing the hydraulic seal.
  • the dishwasher 1 comprises means which compress the seal when the door 3 is closed. Further examples of means which compress the seal are elastic means integrated into a hinge which enables rotation around an axis of rotation 30. Alternatively, said means which compress the seal are magnetic means which hold the door 3 in a closed position.
  • the door 3 comprises/is formed of a first and a second portion 32, 33 positioned in succession. Extension of the first portion 32 being higher or equal to extension of the second portion 33.
  • the first portion 32 integrates the axis of rotation 30 (or at least is positioned at the axis of rotation 30).
  • the second portion 33 projects cantilevered from the first portion 32.
  • the sensor 4 is integrated in the second portion 33 of the door 3. This zone of the door 3 is, in fact, powered electrically, since it generally houses command buttons or displays and is easily accessible even for inspection and maintenance operations.
  • the sensor 4 comprises/is operatively connected to a local processor.
  • the object of the present invention is a method of control of the position of the door 3 of a dishwasher 1 presenting one or more of the characteristics indicated above.
  • the method of control of the position of the door 3 comprises the step of measuring through the agency of the sensor 4 of the dishwasher 1 a first quantity connected with the gravity acceleration component along the first axis which is integrated with the door 3 (see, for example, figures 5 or 8 ).
  • said method also comprises the step of comparing the values taken on by the first quantity with a predetermined threshold value. If the values taken on over time by the first quantity cross the predetermined threshold value to define a peak, the method comprises directly or indirectly comparing the values taken on by the first quantity in a first predetermined time interval upstream of said peak and in a second predetermined time interval downstream of said peak.
  • a peak is indicated by reference 501
  • the first predetermined interval is indicated by reference 502
  • the second predetermined interval is indicated by reference 503.
  • This example is immediately transferable to the graphs of figures 3-8 .
  • the first predetermined time interval 502 immediately precedes the peak 501.
  • the second predetermined time interval 503 immediately follows the peak 501.
  • the transient connected with said peak 501 has substantially stabilised (excluding background noise).
  • the dishwasher 1 detects a condition representing the fact that the average value of the first quantity in said first interval 502 differs from the average value of the first quantity in said second interval 503 by a quantity higher than a predetermined quantity, the dishwasher 1 associates said peak with the movement of the door 3. On the basis of the average value of the first quantity in the interval 503, the dishwasher 1 may further quantify the angle of opening of the door 3.
  • the scope of the present invention is also a method for controlling a dishwasher 1.
  • the method of controlling the dishwasher also comprises the step of detecting through the agency of said sensor 4 at least one shock applied by a user on the door 3.
  • the method of control also comprises performing a command associated with the detection of at least one shock physically applied by a user on the door. With said at least one shock meaning a single shock or a specific sequence of shocks.
  • the dishwasher 1 recognises a number of specific sequences of prememorized shocks, with each of which is associated a different command.
  • the step of detecting through the agency of said sensor 4 the application of said at least one shock comprises the steps of measuring through the sensor 4 of the dishwasher 1 a first quantity connected with the gravity acceleration component along the first axis 40 which is integrated with the door 3.
  • the step of detecting said at least one shock also comprises the step of comparing the values taken on by the first quantity with a predetermined threshold value.
  • the method comprises directly or indirectly comparing the values taken on by the first quantity in a first predetermined time interval 502 immediately upstream of said peak 501 and in a second predetermined time interval 503 immediately downstream of said peak 501.
  • the transient connected with said peak 501 has substantially stabilised; if the dishwasher 1 detects a condition representing the fact that the average value of the first quantity in said first interval 502 is substantially equal to the average value of the first quantity in said second interval 503, the dishwasher 1 associates said peak 501 with an instruction or with a part of an instruction given by the user. Comparing the average value of the first quantity in the first and in the second predetermined time interval 502, 503, the dishwasher 1 is able to distinguish whether the peak 501 is connected with a command of the user or with an angular variation of the door 3.
  • the scope of the present invention is also a method of detecting a possible malfunction of a dishwasher presenting one or more of the characteristics indicated above.
  • This method of detecting a malfunction comprises a sub-step of comparison between functioning spectrums prestored in the dishwasher 1 (and advantageously obtained following experimental tests) and at least part of a spectrum (given by the progress over time of the first quantity) detected by the sensor 4.
  • the present invention enables extremely simply controlling/querying of the dishwasher 1.
  • a further advantage of the present invention is providing a dishwasher 1 which may detect possible malfunctions of the dishwasher 1.
  • the aforementioned advantages are obtained through use of a single sensor.

Claims (1)

  1. Procédé de détection du mouvement de position de la porte (3) d'une lave-vaisselle (1), le lave-vaisselle comprenant :
    - un compartiment de lavage (2) ;
    - une porte (3) donnant accès au compartiment de lavage (2) ;
    dans lequel la porte (3) comprend un capteur (4) qui prend une mesure représentant la composante d'accélération de la pesanteur au moins le long d'un premier axe (40), qui fait partie intégrante de la porte (3), afin de détecter l'inclinaison de la porte (3),
    caractérisé en ce qu'il comprend les étapes suivantes mises en oeuvre par le lave-vaisselle :
    - la mesure par le biais du capteur (4) du lave-vaisselle (1) d'au moins une première quantité liée à la composante d'accélération de la pesanteur le long du premier axe (40) ;
    - la comparaison des valeurs assumées par la première quantité à une valeur de seuil prédéterminée ;
    si les valeurs assumées par la première quantité au fil du temps coupent le seuil prédéterminé pour définir un pic (501), le procédé comprenant la comparaison directe ou indirecte des valeurs assumées par la première quantité dans un premier intervalle de temps prédéterminé (502) immédiatement en amont du pic (501) et dans un second intervalle de temps prédéterminé (503) immédiatement en aval du pic (501), la partie transitoire reliée au pic (501) étant sensiblement stabilisée dans les premier et second intervalles de temps (502, 503) ; si le lave-vaisselle (1) détecte un état représentant le fait que la valeur moyenne de la première quantité dans le premier intervalle de temps (502) diffère de la valeur moyenne de la première quantité dans le second intervalle de temps (503) d'une quantité supérieure à une quantité prédéterminée, le lave-vaisselle (1) associant le pic (501) au mouvement de la porte (3).
EP15157330.0A 2011-11-29 2012-11-14 Lave-vaisselle Active EP2918214B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000080A ITRN20110080A1 (it) 2011-11-29 2011-11-29 Lavastoviglie.
EP20120192513 EP2599424B1 (fr) 2011-11-29 2012-11-14 Lave-vaisselle

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP20120192513 Division EP2599424B1 (fr) 2011-11-29 2012-11-14 Lave-vaisselle

Publications (3)

Publication Number Publication Date
EP2918214A2 EP2918214A2 (fr) 2015-09-16
EP2918214A3 EP2918214A3 (fr) 2015-12-16
EP2918214B1 true EP2918214B1 (fr) 2017-04-19

Family

ID=45370669

Family Applications (2)

Application Number Title Priority Date Filing Date
EP15157330.0A Active EP2918214B1 (fr) 2011-11-29 2012-11-14 Lave-vaisselle
EP20120192513 Active EP2599424B1 (fr) 2011-11-29 2012-11-14 Lave-vaisselle

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP20120192513 Active EP2599424B1 (fr) 2011-11-29 2012-11-14 Lave-vaisselle

Country Status (2)

Country Link
EP (2) EP2918214B1 (fr)
IT (1) ITRN20110080A1 (fr)

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Publication number Priority date Publication date Assignee Title
WO2015036040A1 (fr) 2013-09-13 2015-03-19 Electrolux Appliances Aktiebolag Détermination d'états fonctionnels d'un lave-vaisselle
US9378630B2 (en) * 2013-10-08 2016-06-28 Whirlpool Corporation Method for preventing input on an apparatus having a user interface
EP2984982B1 (fr) * 2014-02-19 2017-12-20 Olympus Corporation Machine pour laver et désinfecter un endoscope
KR102399724B1 (ko) * 2015-09-24 2022-05-20 삼성전자주식회사 디스플레이 장치, 그를 가지는 도어 및 냉장고
WO2018110287A1 (fr) * 2016-12-14 2018-06-21 パナソニックＩｐマネジメント株式会社 Machine à laver la vaisselle
DE102017211855A1 (de) * 2017-07-11 2019-01-17 BSH Hausgeräte GmbH Haushaltsgerät mit zumindest einer beweglichen Tür oder Klappe
DE102017223266A1 (de) * 2017-07-18 2019-01-24 BSH Hausgeräte GmbH Geschirrspülmaschine mit zumindest einer Lufttrocknungseinrichtung
DE102017213425A1 (de) 2017-08-02 2019-02-07 BSH Hausgeräte GmbH Sensorvorrichtung für ein Haushaltskühlgerät
DE102017221258A1 (de) * 2017-11-28 2019-05-29 BSH Hausgeräte GmbH Haushaltsgeschirrspülmaschine und Verfahren zum Betreiben einer Haushaltsgeschirrspülmaschine
DE102018210496A1 (de) * 2018-06-27 2020-01-02 Henkel Ag & Co. Kgaa Überwachung eines Reinigungsprogramms von einer Geschirrspülmaschine
CN111979719A (zh) * 2019-05-06 2020-11-24 青岛海尔洗衣机有限公司 一种衣物处理设备及其控制方法
DE102019214522A1 (de) 2019-09-24 2021-03-25 BSH Hausgeräte GmbH Gerätebedienung
KR20230011086A (ko) * 2021-07-13 2023-01-20 엘지전자 주식회사 식기세척기

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Also Published As

Publication number Publication date
EP2599424A1 (fr) 2013-06-05
EP2599424B1 (fr) 2015-03-11
ITRN20110080A1 (it) 2013-05-30
EP2918214A3 (fr) 2015-12-16
EP2918214A2 (fr) 2015-09-16

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