EP0717953A1 - Dispositif pour détecter la présence de vaisselle dans le panier d'un lave-vaisselle - Google Patents

Dispositif pour détecter la présence de vaisselle dans le panier d'un lave-vaisselle Download PDF

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Publication number
EP0717953A1
EP0717953A1 EP95830529A EP95830529A EP0717953A1 EP 0717953 A1 EP0717953 A1 EP 0717953A1 EP 95830529 A EP95830529 A EP 95830529A EP 95830529 A EP95830529 A EP 95830529A EP 0717953 A1 EP0717953 A1 EP 0717953A1
Authority
EP
European Patent Office
Prior art keywords
sensors
dishes
basket
detect
baskets
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
EP95830529A
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German (de)
English (en)
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EP0717953B1 (fr
Inventor
Roberto Bertazzoni
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.)
Smeg SpA
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Smeg SpA
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Publication date
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Publication of EP0717953A1 publication Critical patent/EP0717953A1/fr
Application granted granted Critical
Publication of EP0717953B1 publication Critical patent/EP0717953B1/fr
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
    • A47L15/50—Racks ; Baskets
    • A47L15/505—Inserts, e.g. for holding baby bottles, stemware or cups
    • 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
    • A47L15/4295—Arrangements for detecting or measuring the condition of the crockery or tableware, e.g. nature or quantity

Definitions

  • the present invention relates to apparatuses for dishwashing machines, and in particular to an apparatus for detecting the presence of dishes in the baskets of a dishwasher.
  • the machine can detect the absence of dishes in one of the baskets and accordingly automatically set the program for a reduced load (1 ⁇ 2 load), or it can change the program parameters (steps, times, temperatures, amount of detergent, etc.) according to the amount and kind of dishes actually present, or it can distribute the amounts of water and detergent differently between the upper and lower basket.
  • Prior art detecting apparatuses are essentially divided into direct and indirect apparatuses.
  • the typical direct apparatus detects the weight of the crockery load
  • examples of indirect apparatuses are those which detect the amount of removed dirt or the decrease of the water temperature occurring in a beginning step of the washing.
  • This second type of detecting apparatus implies quite complicated and expensive devices, for example capable of detecting the turbidity of the rinsing water, or a precise change in the temperature thereof or the amount of dirt remaining in the filter after the rinsing.
  • these apparatuses have a low reliability, since the detected data are heavily affected by the parameters of the starting washing step and by the kind of dirt on the dishes. For example, a substance which is easily removed from the dishes but causes a great turbidity of the water, such as tomato sauce, would cause an indication of "hard" dirt which is completely the opposite of the actual situation.
  • the weight detecting apparatuses have less problems of reliability, however they still imply rather complicated and expensive devices. In fact, some members such as springs, load cells and the like are necessarily present in that they must interact with the baskets for detecting the weight thereof. This requires that the basket supporting devices be made so as to include the above-mentioned weight detecting devices, or the supports be connected to the walls of the washing chamber through said devices. Since the basket supports typically consist of guides formed by drawing directly on the plates which make up the walls, it is apparent that such modifications involve a manufacturing operation much more complicated and expensive than a conventional one.
  • the object of the present invention is to provide an apparatus for detecting the presence of dishes in the baskets which overcomes the above-mentioned drawbacks of prior art apparatuses.
  • a first fundamental advantage of the detecting apparatus according to the present invention is its structural simplicity, which results in low manufacturing cost and high operating reliability.
  • a second advantage of the present apparatus comes from the fact that all its members do not require interaction with any structural member of the dishwasher other than the baskets, thus leaving the greatest freedom in the choice of the position thereof and/or in the type of supporting device.
  • a conventional dishwasher includes an upper basket 1 and a lower basket 2 provided with parallel supports 3 arranged in two rows, wherein the plates are placed in an almost vertical position. Since the lower basket 2 is generally used to arrange not only plates but also pots and the like, each of its two rows of supports 3 is united into a removable insert 4 which can be removed from basket 2 so as to house the pots easily without the obstacle of supports 3. It is apparent that the same kind of structure can be adopted also for the upper basket 1, however the latter is generally used for plates on the right side and for glasses and cups on the left side, as illustrated in fig.1.
  • Each mobile profile 5 essentially consists of a rod pivoted at its ends to the basket structure, and kept in an almost horizontal position by return springs 6. This embodiment is illustrated in fig.2 with reference to the upper basket 1 only, while the mobile profiles 5 of the lower basket 2 have been omitted for the sake of clarity.
  • the angular position of the mobile profiles 5 is defined by the presence or absence of the dishes, and particularly by the size of the plates inserted between supports 3.
  • the arcs illustrated in fig.1 which indicate the angular travels of profiles 5, are schematically shown in fig.3, together with the positions of the sensors which detect the displacement of profiles 5.
  • These sensors are located behind the rear wall of the washing chamber (rearspace), therefore each mobile profile 5 is provided with a rear end portion 7 which takes the information about the angular position thereof to the rearspace.
  • each removable insert 4 is provided with a rear end portion 8 which takes to the rearspace the information about the presence thereof in the lower basket 2.
  • the above-illustrated arrangement is clearly referred to conventional baskets wherein the plate supports 3 are arranged longitudinally so that the plates are essentially parallel to the dishwasher door.
  • the sensors may also be located behind the front wall, i.e. inside the door, obviously providing the mobile profiles 5 with end portions 7, 8 at the front rather than at the rear.
  • supports 3 are arranged transversally, it is obvious that the mobile profiles 5 will be transverse and the sensors will be located behind one of the chamber side walls instead of the rear wall.
  • the angular travel arcs indicated by SD, IS and ID are respectively referred to the upper right, lower left and lower right mobile profile.
  • a left mobile profile has not been provided in the upper basket, but it could obviously be provided in combination with the right one or in place thereof.
  • the sensors located in the rearspace at the lower basket 2 in order to detect the presence of the left and right removable inserts 4, are respectively indicated by S and D.
  • a and A' indicate the sensors detecting the presence of the mobile profiles 5 in "rest" position, i.e. in the absence of dishes.
  • sensors M and G positioned in the lower half of arc SD, suitable to detect the angular position of said profile caused by the presence of medium and large diameter plates, respectively.
  • any angular position of the lower mobile profiles within arcs PP denotes the presence of dishes in the lower basket 2.
  • an angular position of the mobile profile 5 of the upper basket 1 within arc R denotes the absence of dishes, or the presence of small-size plates which cause little or no displacement of the mobile profile.
  • the first two combinations (I and II) of the table above are the two previously mentioned examples of half load, while combination III suggests a normal washing (large plates down and medium plates up), number IV suggests a strong washing (pots down and large plates up), number V suggests to send more water to the lower basket (pots+large plates down and small plates up), number VI suggests a light/normal washing (large+small plates down and medium plates up), and so on.
  • the half-load switch could be triggered by the simultaneous activation of sensors S, D, A, A' as in combination I of the table above.
  • these consist of electric circuits suitable to detect, and to transform into electric signals, the changes in the distribution of the magnetic field caused by the displacement of magnetic elements contained in the end portions 7, 8 of the mobile profiles 5 and of the removable inserts 4.
  • Sensors suitable for this purpose are, for example, reed relays, proximity switches, Hall effect sensors, etc.
  • the signals may be of the on/off kind, as those considered above, or continuos variations of one or more quantities of the detecting circuit (voltage, current), possibly usable with a "fuzzy" logic processing.
  • sensors M and G are simultaneously activated, thus denoting the presence in the upper basket 1 of plates having a diameter between medium and large.
  • the above-described and illustrated embodiment of the detecting apparatus according to the invention is just an example susceptible of various modifications.
  • the number, arrangement and type of the sensors located behind one or more chamber walls may be freely adapted according to the desired precision of detection.
  • the number and arrangement of the mobile profiles 5 may be changed according to the kind of baskets wherein they must be mounted, as far as the introduction of the dishes causes the displacement of the profiles in proportion to the size of the dishes.

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  • Washing And Drying Of Tableware (AREA)
EP95830529A 1994-12-22 1995-12-20 Dispositif pour détecter la présence de vaisselle dans le panier d'un lave-vaisselle Expired - Lifetime EP0717953B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI942608A IT1271788B (it) 1994-12-22 1994-12-22 Sistema di rilevamento della presenza di stoviglie nei cestelli di una macchine lavastoviglie
ITMI942608 1994-12-22

Publications (2)

Publication Number Publication Date
EP0717953A1 true EP0717953A1 (fr) 1996-06-26
EP0717953B1 EP0717953B1 (fr) 1998-08-12

Family

ID=11370051

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95830529A Expired - Lifetime EP0717953B1 (fr) 1994-12-22 1995-12-20 Dispositif pour détecter la présence de vaisselle dans le panier d'un lave-vaisselle

Country Status (4)

Country Link
EP (1) EP0717953B1 (fr)
DE (1) DE69504021T2 (fr)
ES (1) ES2121620T3 (fr)
IT (1) IT1271788B (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0962183A1 (fr) * 1998-05-28 1999-12-08 AEG Hausgeräte GmbH Lave-vaiselle comportant au moins un panier et son procédé de fonctionnement
EP1192892A1 (fr) * 2000-09-28 2002-04-03 Miele & Cie. GmbH & Co. Procédé pour la reconnaissance de la charge de vaisselle dans une lave-vaisselle commandé par programme et lave-vaisselle mettant en oeuvre ce procédé
EP2030556A1 (fr) * 2007-08-27 2009-03-04 Whirlpool Corporation Lave-vaisselle doté d'une détection ciblée
EP2510863A1 (fr) * 2011-04-11 2012-10-17 Chemische Fabrik Dr. Weigert GmbH & Co. KG Pulvérisation directe variable
EP2984979A1 (fr) * 2013-08-26 2016-02-17 Samsung Electronics Co., Ltd Réglage de dent et commande de cycle de lavage adaptable
KR20160020334A (ko) * 2014-08-13 2016-02-23 삼성전자주식회사 타인 조절 및 가변 세척 행정 제어
US9545185B2 (en) 2013-08-26 2017-01-17 Samsung Electronics Co., Ltd. Adjustable utensil tray with a detergent dispenser and movable dividers
CN107865625A (zh) * 2017-11-24 2018-04-03 佛山市顺德区美的洗涤电器制造有限公司 水槽洗碗机及其洗涤控制方法
US11103119B2 (en) * 2015-02-23 2021-08-31 Samsung Electronics Co., Ltd. Dishwashing machine and method of controlling the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2701879A1 (de) * 1977-01-18 1978-07-20 Reinhard Kinne Koerbe fuer geschirr
JPH0260624A (ja) * 1988-08-29 1990-03-01 Matsushita Seiko Co Ltd 食器乾燥器

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2701879A1 (de) * 1977-01-18 1978-07-20 Reinhard Kinne Koerbe fuer geschirr
JPH0260624A (ja) * 1988-08-29 1990-03-01 Matsushita Seiko Co Ltd 食器乾燥器

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 14, no. 236 (C - 0720) 18 May 1990 (1990-05-18) *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0962183A1 (fr) * 1998-05-28 1999-12-08 AEG Hausgeräte GmbH Lave-vaiselle comportant au moins un panier et son procédé de fonctionnement
EP1192892A1 (fr) * 2000-09-28 2002-04-03 Miele & Cie. GmbH & Co. Procédé pour la reconnaissance de la charge de vaisselle dans une lave-vaisselle commandé par programme et lave-vaisselle mettant en oeuvre ce procédé
EP2030556A1 (fr) * 2007-08-27 2009-03-04 Whirlpool Corporation Lave-vaisselle doté d'une détection ciblée
US7935194B2 (en) 2007-08-27 2011-05-03 Whirlpool Corporation Dishwasher with targeted sensing
EP2510863A1 (fr) * 2011-04-11 2012-10-17 Chemische Fabrik Dr. Weigert GmbH & Co. KG Pulvérisation directe variable
US9901240B2 (en) 2013-08-26 2018-02-27 Samsung Electronics Co., Ltd. Tine adjustment and adaptable wash cycle control
CN105361833A (zh) * 2013-08-26 2016-03-02 三星电子株式会社 洗碗装置以及用于使洗碗机的洗涤周期相适应的方法
US9545185B2 (en) 2013-08-26 2017-01-17 Samsung Electronics Co., Ltd. Adjustable utensil tray with a detergent dispenser and movable dividers
EP2984979A1 (fr) * 2013-08-26 2016-02-17 Samsung Electronics Co., Ltd Réglage de dent et commande de cycle de lavage adaptable
CN105361833B (zh) * 2013-08-26 2018-06-01 三星电子株式会社 洗碗装置以及用于使洗碗机的洗涤周期相适应的方法
KR20160020334A (ko) * 2014-08-13 2016-02-23 삼성전자주식회사 타인 조절 및 가변 세척 행정 제어
US11103119B2 (en) * 2015-02-23 2021-08-31 Samsung Electronics Co., Ltd. Dishwashing machine and method of controlling the same
CN107865625A (zh) * 2017-11-24 2018-04-03 佛山市顺德区美的洗涤电器制造有限公司 水槽洗碗机及其洗涤控制方法

Also Published As

Publication number Publication date
IT1271788B (it) 1997-06-09
DE69504021D1 (de) 1998-09-17
ITMI942608A1 (it) 1996-06-22
DE69504021T2 (de) 1999-01-21
ITMI942608A0 (it) 1994-12-22
ES2121620T3 (es) 1998-12-01
EP0717953B1 (fr) 1998-08-12

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