EP1040786A1 - Geschirrspülmaschine mit pulsierenden Wasserstrahlen - Google Patents

Geschirrspülmaschine mit pulsierenden Wasserstrahlen Download PDF

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Publication number
EP1040786A1
EP1040786A1 EP00102533A EP00102533A EP1040786A1 EP 1040786 A1 EP1040786 A1 EP 1040786A1 EP 00102533 A EP00102533 A EP 00102533A EP 00102533 A EP00102533 A EP 00102533A EP 1040786 A1 EP1040786 A1 EP 1040786A1
Authority
EP
European Patent Office
Prior art keywords
dishwashing machine
spraying means
water
pauses
water spray
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
EP00102533A
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English (en)
French (fr)
Other versions
EP1040786B1 (de
Inventor
Ugo Favret
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.)
Electrolux Home Products Italy SpA
Original Assignee
Electrolux Zanussi SpA
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Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=11395508&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1040786(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Electrolux Zanussi SpA filed Critical Electrolux Zanussi SpA
Publication of EP1040786A1 publication Critical patent/EP1040786A1/de
Application granted granted Critical
Publication of EP1040786B1 publication Critical patent/EP1040786B1/de
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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
    • A47L15/4278—Nozzles
    • A47L15/4282—Arrangements to change or modify spray pattern or direction

Definitions

  • the present invention relates to a dishwashing machine with pulsed washing water spray jets, which is capable of enabling energy usage in general to be reduced drastically.
  • a dishwashing machine of the above cited kind is known from US-A-5 525 161, in which the rotating spray arms are supplied by a circulation pump so as to issue, towards the dishes to be washed, respective pulsed water spray jets, ie. with an alternating sequence of periods and pauses in which the pressure of the water supplying said rotating spray arms is at its highest and its lowest value, respectively.
  • the rotating spray arms issue low-pressure water spray jets so as to keep up an adequate operating effectiveness of the machine and lower the overall water-generated noise thereof.
  • dishwashing machines generally comprise an upper rack and a lower rack, below which there is arranged an associated rotating spray arm with main nozzles adapted to issue washing water spray jets directed upwards.
  • at least one of said rotating spray arms also comprises auxiliary nozzles adapted to issue water spray jets that are directed downwards. This is normally applied to the upper rotating spray arm, in view of ensuring a more accurate and thorough washing effect on the washload items arranged in the lower rack.
  • the lower rotating spray arm may (alternatively or additionally) be adapted to issue auxiliary water spray jets that are directed downwards, for instance in view of bringing about a washing action aimed at automatically cleaning the filtering means provided on the bottom of the washing vessel of the machine.
  • the auxiliary water spray jets turn out to be substantially ineffective and practically constitute respective water losses, or leakages, that further reduce the pressure of the main water spray jets.
  • these main water spray jets lose much of their efficiency during said low-pressure operating pauses, under resulting reduction in the overall performance of the machine.
  • the dishwashing machine comprises mainly a washing vessel 5, in which there are accommodated, for supporting the washload items, at least an upper rack 6 and preferably at least a lower rack 7.
  • Said racks 6 and 7 are associated to respective spraying means that preferably comprise hollow rotating spray arms 8 and 9 arranged therebelow. These rotating spray arms are provided with a plurality of main spray nozzles 10 adapted to eject respective washing water spray jets towards the respective racks, as this will be described in greater detail further on.
  • At least one of these rotating spray arms 8, 9 also comprises at least an auxiliary nozzle 12 adapted to eject a respective water spray jet, as this will be better explained further on.
  • auxiliary nozzles 12 are provided in the upper rotating spray arm 8 to the purpose of ejecting water spray jets that are directed against the lower rack 7 arranged therebelow.
  • one or more auxiliary nozzles 12 may be provided also in the lower rotating spray arm 9 to the purpose of ejecting water spray jets which may for instance be directed towards the filtering means 11 of the machine, so as to clean them automatically.
  • a particular alternative embodiment which is not shown in the Figures owing to reasons of greater simplicity, is known for instance from US-A-4 972 861.
  • the rotating spray arms 8, 9 are supplied with water which is delivered under pressure by a circulation pump 13, which is adapted to be operated in the manner as substantially described in the afore cited publication US-A-5 525 161 so as to ensure that the pressure of the water supplying the rotating spray arms 8, 9 is variable between a highest value and a lowest value during an alternating sequence of operating periods and pauses, respectively.
  • each rotating spray arm that is so provided with main nozzles 10 and auxiliary nozzles 12 (ie. the rotating spray arm 8 in the example described here) comprises control means adapted to substantially shut off the auxiliary nozzles 12 during said operating pauses, ie. when the same rotating spray arm is supplied, in correspondence of an inlet port 16 thereof connected to the pump 13, with water having the afore cited lowest pressure value.
  • control means are adapted to be operated hydraulically in an automatic manner and, to such a purpose, a partition wall 17 may be provided so as to substantially divide the interior of the rotating spray arm 8 into two distinct chambers 18 and 19.
  • the chamber 18 communicates normally with the inlet port 16 and the main nozzles 10, whereas the chamber 19 communicates normally with the auxiliary nozzles 12 only.
  • the two chambers 18 and 19 of the rotating spray arm 8 are adapted to communicate with each other through at least a passage 20 that is normally shut by a valve arrangement 21.
  • the latter comprises substantially a shutter 14 that is loaded by a compression spring 15, or the like, which keeps it normally in its position in which it shuts the passage 20, as this is shown in Figure 3.
  • the spring 15 is so sized as to make it possible for the pushing force thereof to be overcome when, during the afore cited operating periods, the rotating spray arm 8 receives, at the inlet port 16 thereof, water at its highest pressure value, which therefore is capable of acting with an adequately great pressure on said shutter 14.
  • the same shutter 14 is thereby caused to switch over to a position in which it opens the passage 20 ( Figure 4), through which said chambers 18 and 19 are then able to communicate with each other.
  • the water supplying the inlet port 16 of the rotating spray arm 8 is then delivered to both the main nozzles 10 and the auxiliary nozzles 12, which are in this way to issue respective water spray jets at an adequate pressure ( Figure 2).
  • the lower pressure of the water at the inlet port 16 of the rotating spray arm 8 is substantially compensated for by the smaller overall passage or flow-through cross-section area of the nozzles that are to be supplied by the same water, ie. the main nozzles 10 only.
  • valve arrangement 21 it may prove advantageous for the valve arrangement 21 to be adapted so that, during said operating pauses, it actually shuts off the main nozzles 10, instead of the auxiliary nozzles 12, for example in view of ensuring a more thorough cleaning of the washload items arranged on the lower rack 7 only.
  • the valve arrangement 21 it may prove advantageous for the valve arrangement 21 to be adapted so that, during said operating pauses, it actually shuts off the main nozzles 10, instead of the auxiliary nozzles 12, for example in view of ensuring a more thorough cleaning of the washload items arranged on the lower rack 7 only.
  • both the main nozzles 10 and the auxiliary nozzles 12 may be provided on the same side of the rotating spray arm 8, so as to cause them to eject respective water spray jets that are in all cases directed against the upper rack 6, for instance.
  • the washload items arranged on the rack 6 normally showered by all of the nozzles 10, 12 during said operating periods, while being showered to an adequate extent of effectiveness by either the nozzles 10 only or the nozzles 12 only during said operating pauses.
  • the present invention may be advantageously applied also to a dishwashing machine in which the rotating spray arms 8, 9 are supplied alternately, as described for instance in EP-B-0 237 994.
EP00102533A 1999-03-29 2000-02-07 Geschirrspülmaschine mit pulsierenden Wasserstrahlen Expired - Lifetime EP1040786B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1999PN000032A IT1311214B1 (it) 1999-03-29 1999-03-29 Lavastoviglie con getti d'acqua pulsanti
ITPN990032 1999-03-29

Publications (2)

Publication Number Publication Date
EP1040786A1 true EP1040786A1 (de) 2000-10-04
EP1040786B1 EP1040786B1 (de) 2004-09-01

Family

ID=11395508

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00102533A Expired - Lifetime EP1040786B1 (de) 1999-03-29 2000-02-07 Geschirrspülmaschine mit pulsierenden Wasserstrahlen

Country Status (3)

Country Link
EP (1) EP1040786B1 (de)
DE (1) DE60013345T2 (de)
IT (1) IT1311214B1 (de)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005072595A1 (en) * 2004-01-29 2005-08-11 Arcelik Anonim Sirketi A dishwasher and a control method
EP1586264A2 (de) * 2004-04-15 2005-10-19 Miele & Cie. KG Geschirrspülmaschine mit einem Spülbehälter in dem wenigstens ein Sprüharm angeordnet ist
EP1731081A3 (de) * 2005-06-08 2007-01-03 Miele & Cie. KG Spülmaschine
DE102006012080A1 (de) * 2006-03-14 2007-09-27 Miele & Cie. Kg Spülmaschine
EP1854393A3 (de) * 2006-05-10 2011-03-02 Miele & Cie. KG Verfahren zur Durchführung eines Spülprogramms in einer Spülmaschine
US20110265827A1 (en) * 2010-05-03 2011-11-03 Bsh Home Appliances Corporation Dishwasher with improved cleaning effect
US8210191B2 (en) * 2008-12-09 2012-07-03 General Electric Company Dishwasher having multi-mode spray arm system
EP2522268A1 (de) * 2011-05-12 2012-11-14 LG Electronics Inc. Geschirrspüler
US8349089B2 (en) * 2008-11-07 2013-01-08 Whirlpool Corporation Dishwasher having dedicated sprayer for silverware basket
EP2772177A1 (de) * 2013-03-01 2014-09-03 Whirlpool Corporation Geschirrspüler mit Sprühvorrichtung
EP2805662A1 (de) * 2013-05-21 2014-11-26 Samsung Electronics Co., Ltd Düsenanordnung und Geschirrspüler damit
US9295368B2 (en) 2013-03-01 2016-03-29 Whirlpool Corporation Dishwasher with hydraulically driven sprayer
US9375128B2 (en) 2011-09-22 2016-06-28 Whirlpool Corporation Dishwasher with spray system
CN105813532A (zh) * 2013-12-20 2016-07-27 伊莱克斯电器股份公司 用于提供洗涤区域的安排
CN105813534A (zh) * 2013-12-20 2016-07-27 伊莱克斯电器股份公司 洗碗机中用于创建具有增强洗涤的洗涤区域的安排
US9414736B2 (en) 2011-09-22 2016-08-16 Whirlpool Corporation Dishwasher with directional spray
US9492055B2 (en) 2011-09-22 2016-11-15 Whirlpool Corporation Dishwasher with spray system
US9532699B2 (en) 2013-07-15 2017-01-03 Whirlpool Corporation Dishwasher with sprayer
WO2017088935A1 (en) * 2015-11-27 2017-06-01 Electrolux Appliances Aktiebolag Flow control arrangement and dishwasher comprising a flow control arrangement
US9693672B2 (en) 2011-09-22 2017-07-04 Whirlpool Corporation Dishwasher with sprayer
CN107997713A (zh) * 2017-12-05 2018-05-08 杨公民 一种通用型自循环酒店餐具清洗装置
US10105031B2 (en) 2013-12-20 2018-10-23 Electrolux Appliances Aktiebolag Arrangement for a dishwasher for creating a wash zone with selectable position
US10213085B2 (en) 2013-07-01 2019-02-26 Whirlpool Corporation Dishwasher for treating dishes

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015222771B3 (de) 2015-11-18 2017-05-18 Technische Universität Berlin Fluidisches Bauteil
DE102017207990B4 (de) * 2017-05-11 2020-07-30 Haier Deutschland GmbH Schaltbarer Flüssigkeitsausbringer mit Federelement

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0057672A2 (de) * 1981-02-02 1982-08-11 INDESIT INDUSTRIA ELETTRODOMESTICI ITALIANA S.p.A. Automatische Umschalteinrichtung einer drehbaren Klappe in einer Geschirrspülmaschine
EP0659381A1 (de) * 1993-12-20 1995-06-28 ELECTROLUX ZANUSSI ELETTRODOMESTICI S.p.A. Betriebsverfahren für eine Geschirrspülmaschine
DE19736919A1 (de) * 1997-08-25 1999-03-04 Aeg Hausgeraete Gmbh Geschirrspülmaschine mit mindestens einer Spülebene

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0057672A2 (de) * 1981-02-02 1982-08-11 INDESIT INDUSTRIA ELETTRODOMESTICI ITALIANA S.p.A. Automatische Umschalteinrichtung einer drehbaren Klappe in einer Geschirrspülmaschine
EP0659381A1 (de) * 1993-12-20 1995-06-28 ELECTROLUX ZANUSSI ELETTRODOMESTICI S.p.A. Betriebsverfahren für eine Geschirrspülmaschine
DE19736919A1 (de) * 1997-08-25 1999-03-04 Aeg Hausgeraete Gmbh Geschirrspülmaschine mit mindestens einer Spülebene

Cited By (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005072595A1 (en) * 2004-01-29 2005-08-11 Arcelik Anonim Sirketi A dishwasher and a control method
EP1586264A3 (de) * 2004-04-15 2008-07-23 Miele & Cie. KG Geschirrspülmaschine mit einem Spülbehälter in dem wenigstens ein Sprüharm angeordnet ist
DE102004018878A1 (de) * 2004-04-15 2005-11-10 Miele & Cie. Kg Geschirrspülmaschine mit einem Spülbehälter in dem wenigstens ein Sprüharm angeordnet ist
DE102004018878B4 (de) * 2004-04-15 2006-01-05 Miele & Cie. Kg Geschirrspülmaschine mit einem Spülbehälter in dem wenigstens ein Sprüharm angeordnet ist
EP1586264A2 (de) * 2004-04-15 2005-10-19 Miele & Cie. KG Geschirrspülmaschine mit einem Spülbehälter in dem wenigstens ein Sprüharm angeordnet ist
EP1731081A3 (de) * 2005-06-08 2007-01-03 Miele & Cie. KG Spülmaschine
DE102006012080A1 (de) * 2006-03-14 2007-09-27 Miele & Cie. Kg Spülmaschine
EP1854393A3 (de) * 2006-05-10 2011-03-02 Miele & Cie. KG Verfahren zur Durchführung eines Spülprogramms in einer Spülmaschine
US8349089B2 (en) * 2008-11-07 2013-01-08 Whirlpool Corporation Dishwasher having dedicated sprayer for silverware basket
US8210191B2 (en) * 2008-12-09 2012-07-03 General Electric Company Dishwasher having multi-mode spray arm system
US20110265827A1 (en) * 2010-05-03 2011-11-03 Bsh Home Appliances Corporation Dishwasher with improved cleaning effect
US8734588B2 (en) * 2010-05-03 2014-05-27 Bsh Home Appliances Corporation Dishwasher with improved cleaning effect
EP2522268A1 (de) * 2011-05-12 2012-11-14 LG Electronics Inc. Geschirrspüler
US9462924B2 (en) 2011-05-12 2016-10-11 Lg Electronics Inc. Dishwasher
US9402526B2 (en) 2011-09-22 2016-08-02 Whirlpool Corporation Dishwasher with spray system
US9492055B2 (en) 2011-09-22 2016-11-15 Whirlpool Corporation Dishwasher with spray system
US9375128B2 (en) 2011-09-22 2016-06-28 Whirlpool Corporation Dishwasher with spray system
US9386903B2 (en) 2011-09-22 2016-07-12 Whirlpool Corporation Dishwasher with spray system
US10602907B2 (en) 2011-09-22 2020-03-31 Whirlpool Corporation Dishwasher with sprayer
US9693672B2 (en) 2011-09-22 2017-07-04 Whirlpool Corporation Dishwasher with sprayer
US10058229B2 (en) 2011-09-22 2018-08-28 Whirlpool Corporation Dishwasher with sprayer
US9414736B2 (en) 2011-09-22 2016-08-16 Whirlpool Corporation Dishwasher with directional spray
EP2772177A1 (de) * 2013-03-01 2014-09-03 Whirlpool Corporation Geschirrspüler mit Sprühvorrichtung
US9295368B2 (en) 2013-03-01 2016-03-29 Whirlpool Corporation Dishwasher with hydraulically driven sprayer
US9532701B2 (en) 2013-03-01 2017-01-03 Whirlpool Corporation Dishwasher with sprayer
US10398283B2 (en) 2013-03-01 2019-09-03 Whirlpool Corporation Dishwasher with sprayer
EP2805662A1 (de) * 2013-05-21 2014-11-26 Samsung Electronics Co., Ltd Düsenanordnung und Geschirrspüler damit
US9782052B2 (en) 2013-05-21 2017-10-10 Samsung Electronics Co., Ltd. Nozzle assembly and dishwasher having the same
US10213085B2 (en) 2013-07-01 2019-02-26 Whirlpool Corporation Dishwasher for treating dishes
US10052010B2 (en) 2013-07-15 2018-08-21 Whirlpool Corporation Dishwasher with sprayer
US9532699B2 (en) 2013-07-15 2017-01-03 Whirlpool Corporation Dishwasher with sprayer
US9839340B2 (en) 2013-07-15 2017-12-12 Whirlpool Corporation Dishwasher with sprayer
US20160287050A1 (en) * 2013-12-20 2016-10-06 Electrolux Appliances Aktiebolag Arrangement in a dishwasher for creating a wash zone with intensified washing
US9993134B2 (en) * 2013-12-20 2018-06-12 Electrolux Appliances Aktiebolag Arrangement in a dishwasher for creating a wash zone with intensified washing
US10105031B2 (en) 2013-12-20 2018-10-23 Electrolux Appliances Aktiebolag Arrangement for a dishwasher for creating a wash zone with selectable position
US10117559B2 (en) * 2013-12-20 2018-11-06 Electrolux Appliances Aktiebolag Arrangement for providing a wash zone
EP3082552A1 (de) * 2013-12-20 2016-10-26 Electrolux Appliances Aktiebolag Anordnung in einer geschirrspülmaschine zur erzeugung einer waschzone mit intensiviertem waschen
CN105813532B (zh) * 2013-12-20 2019-04-05 伊莱克斯电器股份公司 用于提供洗涤区域的安排
CN105813534A (zh) * 2013-12-20 2016-07-27 伊莱克斯电器股份公司 洗碗机中用于创建具有增强洗涤的洗涤区域的安排
CN105813532A (zh) * 2013-12-20 2016-07-27 伊莱克斯电器股份公司 用于提供洗涤区域的安排
EP3082552B1 (de) * 2013-12-20 2021-11-03 Electrolux Appliances Aktiebolag Anordnung in einer geschirrspülmaschine zur erzeugung einer waschzone mit intensiviertem waschen
WO2017088935A1 (en) * 2015-11-27 2017-06-01 Electrolux Appliances Aktiebolag Flow control arrangement and dishwasher comprising a flow control arrangement
CN107997713A (zh) * 2017-12-05 2018-05-08 杨公民 一种通用型自循环酒店餐具清洗装置

Also Published As

Publication number Publication date
DE60013345D1 (de) 2004-10-07
IT1311214B1 (it) 2002-03-04
ITPN990032A0 (it) 1999-03-29
EP1040786B1 (de) 2004-09-01
ITPN990032A1 (it) 2000-09-29
DE60013345T2 (de) 2005-02-17

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