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EP2591712A1 - Lave-vaisselle avec dispositif d'ouverture de porte automatique - Google Patents

Lave-vaisselle avec dispositif d'ouverture de porte automatique Download PDF

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Publication number
EP2591712A1
EP2591712A1 EP11425273.7A EP11425273A EP2591712A1 EP 2591712 A1 EP2591712 A1 EP 2591712A1 EP 11425273 A EP11425273 A EP 11425273A EP 2591712 A1 EP2591712 A1 EP 2591712A1
Authority
EP
European Patent Office
Prior art keywords
pushers
dishwasher
door
thermoactuators
housings
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.)
Withdrawn
Application number
EP11425273.7A
Other languages
German (de)
English (en)
Inventor
Andrea Rossato
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.)
Bonferraro SpA
Original Assignee
Bonferraro 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 Bonferraro SpA filed Critical Bonferraro SpA
Priority to EP11425273.7A priority Critical patent/EP2591712A1/fr
Publication of EP2591712A1 publication Critical patent/EP2591712A1/fr
Withdrawn legal-status Critical Current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
    • A47L15/4251—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
    • 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
    • A47L2501/22—Loading doors, e.g. door latches, inflatable door seals

Definitions

  • the present invention relates to dishwashers, and in particular to a dishwasher provided with a device for the automatic opening of the door closed by a pull lock.
  • dishwashers provided with devices for automatically opening the door that can be made in different ways, for example an unlocking coil that acts on a lever system like in EP 1935313 , a motor driving a bracket connected to the lock like in DE 9421812U1 , a spring that causes the extension of a telescopic pusher through a hydraulic piston like in DE 2405143 or a rack and pinion system that acts as a linear actuator like in EP 1733675 .
  • the automatic door opening may be useful at the end of the wash cycle to show the user that the cycle is over, in particular in built-in dishwashers where the control/display panel is not visible when the door is closed, and also in some steps of the wash cycle to enhance the dishwasher performance, in particular in the drying step as disclosed in the above-mentioned application EP 1733675 .
  • EP 2210547 a simpler device consisting of a pair of pushers driven by relevant resilient members having a force sufficient to open the door by overcoming the resistance of the pull lock, as well as a pushers control mechanism mobile between a retention position and a release position according to the commands received from the dishwasher control unit
  • the pushers control mechanism must exert a greater force that is sufficient to pull back the resilient members so as to allow the closure of the door and this implies the use of a motor of suitable power which therefore has a certain degree of bulkiness and cost.
  • the resilient members when the device is in the pushers retention position and the resilient members are compressed, their strength is discharged on the device structure that must therefore be sufficiently robust in all its components and is in any case subj ected to a continuous high stress that affects its reliability.
  • the obj ect of the present invention is to provide a dishwasher provided with an automatic door-opening device which overcomes the above-mentioned drawbacks.
  • This object is achieved by means of a dishwasher whose automatic door-opening device comprises one or more pushers driven in the first length of the opening travel by thermoactuators having a force sufficient to overcome the resistance of the pull lock and in the rest of the opening travel by resilient members.
  • the thermoactuators exert the greater effort of overcoming the resistance of the pull lock whereas the resilient members only have to exert the much smaller effort of completing the opening travel by overcoming the rotational resistance of the door hinge.
  • the main advantage of the dishwasher according to the present invention is therefore that of having an automatic door-opening device in which the unlocking of the door is achieved through small and inexpensive means, while the resilient members even when compressed do not stress the device structure too much since they are much weaker with respect to those used in the device disclosed in EP 2210547 .
  • a further significant advantage of this dishwasher is that the automatic door-opening device is extremely simple and consequently reliable and inexpensive, and its operation is very simple to be controlled by the control unit.
  • a dishwasher conventionally includes a bottom-hinged door that is kept closed by means of a pull lock 1, as well as an automatic door-opening device comprising a pair of pushers 2 located at the top corners of the door, perpendicularly thereto, and driven by a pair of coil springs 3 respectively arranged behind pushers 2 and compressed within suitable housings 4 secured on the dishwasher body.
  • Pushers 2 are slidably arranged in said housings 4 so as to project through the front side of the latter, and they are provided with rear flanges 2a preventing them from sliding out of housings 4.
  • the movements of pushers 2 are preferably guided also by a pair of rods 5 that extend backwards from pushers 2 and are slidably arranged in housings 4 so as to project through the rear side of the latter (springs 3 are slidably introduced on rods 5).
  • thermoactuators 6 arranged so as to act on the rear end of rods 5 to push forward pushers 2. It should be noted that in the closed door condition of Fig.1 , where thermoactuators 6 are in the rest position, springs 3 are compressed but they are too weak to overcome the resistance of the pull lock 1 whereby the door remains closed, yet it is possible to open and close it manually.
  • thermoactuators 6 that exert a force greater than that required to unlock the pull lock 1
  • the extension of their stems 6a results in a push on rods 5 of pushers 2 which in turn causes the opening of the door.
  • the control unit that has detected the opening of the door (through a sensor that is not illustrated) deactivates thermoactuators 6.
  • thermoactuators 6 could act on pushers 2 even through means different from rods 5, which therefore could serve only as guiding members or be absent altogether.
  • thermoactuators 6 could be arranged parallel to pushers 2, rather than aligned behind them, such that stems 6a could act on lateral pins of pushers 2 projecting from housings 4 through suitable slots.
  • the above-described and illustrated embodiment of the dishwasher according to the invention is just an example susceptible of various modifications.
  • the exact shape and arrangement of the members could be changed according to specific manufacturing needs, e.g. by using a different number of pushers arranged at different positions (starting from a single pusher at a central position), or by using mechanical equivalents of the above-described members such as a different type of resilient members with respect to springs 3, which could be arranged even outside housings 4, as long as the general structure of the automatic opening device is retained with the thermoactuators for unlocking the pull lock and the resilient members for completing the travel of the pushers.

Landscapes

  • Washing And Drying Of Tableware (AREA)
EP11425273.7A 2011-11-10 2011-11-10 Lave-vaisselle avec dispositif d'ouverture de porte automatique Withdrawn EP2591712A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11425273.7A EP2591712A1 (fr) 2011-11-10 2011-11-10 Lave-vaisselle avec dispositif d'ouverture de porte automatique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11425273.7A EP2591712A1 (fr) 2011-11-10 2011-11-10 Lave-vaisselle avec dispositif d'ouverture de porte automatique

Publications (1)

Publication Number Publication Date
EP2591712A1 true EP2591712A1 (fr) 2013-05-15

Family

ID=45422036

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11425273.7A Withdrawn EP2591712A1 (fr) 2011-11-10 2011-11-10 Lave-vaisselle avec dispositif d'ouverture de porte automatique

Country Status (1)

Country Link
EP (1) EP2591712A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013109620A1 (de) * 2013-09-04 2015-03-05 Miele & Cie. Kg Haushaltgerät mit automatischem Türöffnungsmechanismus
WO2017109590A1 (fr) * 2015-12-22 2017-06-29 Kanuparti Vishnu Prashant Reddy Lave-vaisselle utilisant une puissance optimale pour le nettoyage d'ustensiles
CN107518850A (zh) * 2017-11-21 2017-12-29 佛山市百斯特电器科技有限公司 一种自动开门机构
US9861252B2 (en) 2014-08-04 2018-01-09 Samsung Electronics Co., Ltd. Dishwasher
CN107752954A (zh) * 2017-11-24 2018-03-06 佛山市顺德区美的洗涤电器制造有限公司 水槽式洗碗机
CN108742418A (zh) * 2018-06-01 2018-11-06 佛山市顺德区美的洗涤电器制造有限公司 家用器具壳体组件和洗碗机
CN116158712A (zh) * 2023-03-27 2023-05-26 创维电器股份有限公司 一种具有自动开门顶出结构的洗碗机

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2405143A1 (de) 1974-01-31 1975-08-07 Bosch Siemens Hausgeraete Mit einem auswerfer versehene tuer oder klappe
US4951693A (en) * 1989-02-08 1990-08-28 Jean Archambault Automatic door opening system for domestic dishwashers
DE9421812U1 (de) 1994-10-25 1997-01-23 Bauknecht Hausgeräte GmbH, 70565 Stuttgart Vorrichtung zum Trocknen von Geschirr in einer Geschirrspülmaschine
US20040163684A1 (en) * 2003-02-25 2004-08-26 Hapke Kenyon A. Automatic door for dishwasher
EP1733675A2 (fr) 2005-06-17 2006-12-20 Miele & Cie. KG Lave-vaisselle avec un cuve de lavage fermée par une porte, et procédé de lavage correspondant
US20070193606A1 (en) * 2005-12-27 2007-08-23 Bsh Bosch Und Siemens Hausgerate Gmbh Dishwashing machine with a self-closure mechanism for locking the door and method for operating the dishwashing machine
EP1935313A1 (fr) 2006-12-19 2008-06-25 Bonferraro S.p.A. Appareil domestique encastré avec panneau décoratif attaché sur la porte
EP2210547A1 (fr) 2009-01-23 2010-07-28 Bonferraro S.p.A. Lave-vaisselle avec dispositif automatique de serrure électrique
US20110074261A1 (en) * 2008-06-02 2011-03-31 Miele & Cie. Kg Dishwasher having a device for opening the door in gaps
WO2011141542A1 (fr) * 2010-05-14 2011-11-17 Arcelik Anonim Sirketi Lave-vaisselle comportant un mécanisme d'ouverture de porte automatique

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2405143A1 (de) 1974-01-31 1975-08-07 Bosch Siemens Hausgeraete Mit einem auswerfer versehene tuer oder klappe
US4951693A (en) * 1989-02-08 1990-08-28 Jean Archambault Automatic door opening system for domestic dishwashers
DE9421812U1 (de) 1994-10-25 1997-01-23 Bauknecht Hausgeräte GmbH, 70565 Stuttgart Vorrichtung zum Trocknen von Geschirr in einer Geschirrspülmaschine
US20040163684A1 (en) * 2003-02-25 2004-08-26 Hapke Kenyon A. Automatic door for dishwasher
EP1733675A2 (fr) 2005-06-17 2006-12-20 Miele & Cie. KG Lave-vaisselle avec un cuve de lavage fermée par une porte, et procédé de lavage correspondant
US20070193606A1 (en) * 2005-12-27 2007-08-23 Bsh Bosch Und Siemens Hausgerate Gmbh Dishwashing machine with a self-closure mechanism for locking the door and method for operating the dishwashing machine
EP1935313A1 (fr) 2006-12-19 2008-06-25 Bonferraro S.p.A. Appareil domestique encastré avec panneau décoratif attaché sur la porte
US20110074261A1 (en) * 2008-06-02 2011-03-31 Miele & Cie. Kg Dishwasher having a device for opening the door in gaps
EP2210547A1 (fr) 2009-01-23 2010-07-28 Bonferraro S.p.A. Lave-vaisselle avec dispositif automatique de serrure électrique
WO2011141542A1 (fr) * 2010-05-14 2011-11-17 Arcelik Anonim Sirketi Lave-vaisselle comportant un mécanisme d'ouverture de porte automatique

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013109620A1 (de) * 2013-09-04 2015-03-05 Miele & Cie. Kg Haushaltgerät mit automatischem Türöffnungsmechanismus
US9861252B2 (en) 2014-08-04 2018-01-09 Samsung Electronics Co., Ltd. Dishwasher
WO2017109590A1 (fr) * 2015-12-22 2017-06-29 Kanuparti Vishnu Prashant Reddy Lave-vaisselle utilisant une puissance optimale pour le nettoyage d'ustensiles
CN107518850A (zh) * 2017-11-21 2017-12-29 佛山市百斯特电器科技有限公司 一种自动开门机构
CN107752954A (zh) * 2017-11-24 2018-03-06 佛山市顺德区美的洗涤电器制造有限公司 水槽式洗碗机
CN108742418A (zh) * 2018-06-01 2018-11-06 佛山市顺德区美的洗涤电器制造有限公司 家用器具壳体组件和洗碗机
CN116158712A (zh) * 2023-03-27 2023-05-26 创维电器股份有限公司 一种具有自动开门顶出结构的洗碗机

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