EP1050263A2 - Machine à laver avec dispositif à jet epicycloidal - Google Patents

Machine à laver avec dispositif à jet epicycloidal Download PDF

Info

Publication number
EP1050263A2
EP1050263A2 EP00107218A EP00107218A EP1050263A2 EP 1050263 A2 EP1050263 A2 EP 1050263A2 EP 00107218 A EP00107218 A EP 00107218A EP 00107218 A EP00107218 A EP 00107218A EP 1050263 A2 EP1050263 A2 EP 1050263A2
Authority
EP
European Patent Office
Prior art keywords
axis
dishwashing machine
arm
rotation
spray apparatus
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Withdrawn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
EP00107218A
Other languages
German (de)
English (en)
Other versions
EP1050263A3 (fr
Inventor
Daniele Favaro
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 Zanussi Elettrodomestici SpA
Electrolux Zanussi SpA
Original Assignee
Electrolux Zanussi Elettrodomestici SpA
Electrolux Zanussi 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 Electrolux Zanussi Elettrodomestici SpA, Electrolux Zanussi SpA filed Critical Electrolux Zanussi Elettrodomestici SpA
Publication of EP1050263A2 publication Critical patent/EP1050263A2/fr
Publication of EP1050263A3 publication Critical patent/EP1050263A3/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Withdrawn legal-status Critical Current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
    • A47L15/14—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
    • A47L15/18—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber with movably-mounted spraying devices
    • A47L15/22—Rotary spraying devices
    • A47L15/23—Rotary spraying devices moved by means of the sprays
    • 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
    • A47L15/14—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
    • A47L15/18—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber with movably-mounted spraying devices
    • A47L15/22—Rotary spraying devices

Definitions

  • the present invention relates to a dishwashing machine with at least a rotating spray apparatus adapted to spray, with an epicycloidal motion, the washload items arranged in a thereto associated support rack.
  • a dishwashing machine of the above cited kind is described for instance in IT-A-1 254 866, in which a rotating spray apparatus is mounted rotatably, about a vertical axis, on a water supply arm that is in turn capable of rotating about a vertical axis passing through the centre of the washing vessel of the machine.
  • the axis of rotation of the spray apparatus is arranged to pass through an intermediate point of the water supply arm, at a free end of which there is provided at least a transversal propulsion nozzle.
  • the spray apparatus is provided with radial arms that are substantially longer than the distance between the above cited axes, and comprises primary and secondary nozzles adapted to issue wash water jets directed at the washload items and transversal propulsion jets, respectively.
  • the spray apparatus is arranged to rotate in the washing vessel of the machine with an epicycloidal motion that ensures a particular effectiveness to the wash water jets being sprayed onto the washload items.
  • the overall volume of the water distribution circuit formed by the rotating spray apparatus and the respective water supply arm turns out to be undesirably oversized owing mainly to the length of the spray apparatus (which on the other hand is necessary for the spray apparatus itself to be able to "scan", ie. cover the whole inner volume of the washing vessel) and the portion of the arm that extends from the axis of the spray apparatus the free end of the same arm carrying the propulsion nozzles. It is of course appreciated that even such a supplementary portion of the arm is necessary for an appropriate rotation moment to be able to be imparted to the same arm. In practice, anyway, such an oversizing of the water distribution circuit of the machine implies a need for an excess amount of water to be let into the washing vessel of the machine and this of course carries a correspondingly increased energy usage with it.
  • a further purpose yet of the present invention is to provide a dishwashing machine of the above cited kind, which is simple in its construction and capable of enabling a substantial noise reduction to be obtained.
  • the dishwashing machine comprises mainly a washing vessel 3 which is substantially in the shape of a parallelepiped having a substantially square or rectangular base.
  • the washing vessel 3 shall be understood as accommodating at least a rack (not shown) adapted to support the washload items that are sprayed with wash liquor by at least an epicycloidal-motion rotating spray apparatus 4.
  • the rotating spray apparatus 4 is preferably arranged in a position adjacent to the bottom or base 5 of the vessel and may for instance be in the shape of a discoid with at least a water-carrying arm 6 provided with spray nozzles 7.
  • three spray arms 6 are provided in the form of respective internal mechanisms of the spray apparatus 4, which diverge from the centre thereof according to a curvilinear or rectilinearly radial pattern, as illustrated in Figures 1 and 2, respectively.
  • the nozzles 7 are adapted to issue towards the washload items respective jets of pressurized water, at least one of which is directed in such a direction as to be able to exert a tangential propulsion component capable of bringing about the rotation of the spray apparatus 4 about a substantially vertical central axis 8.
  • the spray apparatus 4 is hinged freely on said axis 8 by means of a rotating hydraulic joint 9 substantially in correspondence of the free end 10 of a transversal water-supply tubular arm 11.
  • the arm 11 is in turn rotatably connected, by means of a respective rotating hydraulic joint, to a conduit provided to supply water under pressure.
  • said water supply conduit shall be understood as being in turn connected to the delivery side of a circulation pump controlled by the programme sequence control unit of the dishwashing machine, substantially as described for instance in IT-A-1 256 273.
  • the water-supply arm 11 is capable of rotating about a substantially vertical axis 13 extending to substantially pass through the centre of the washing vessel 3 of the machine.
  • the spray apparatus 4 rotates about the axis 8
  • the arm 11 in turn rotates about the axis 13.
  • the water-carrying arm 6 (or the water-carrying arms 6, as the case may be) of the spray apparatus 4 extends from the axis of rotation 8 for a radial length R that is substantially equal to one fourth of the shortest inner side L of the washing vessel 3.
  • said washing vessel is a square-plan one, so that the sides L of the vessel itself are of course equal.
  • the distance A of the axes of rotation 8 and 13 from each other is substantially equal to the above cited radial length R.
  • the water distribution circuit 4, 11 may be advantageously sized to feature the minimum inner volume as required to ensure that the water spray jets issuing from the nozzles 7 are able to "scan", ie. cover with an effective epicycloidal movement a cross-section of the washing vessel having as large an area as possible (delimited by the circumference 14 in Figure 2).
  • Such a reduction in the overall volume in said water distribution circuit 4, 11 is of course effective in enabling the amount of water required to supply the hydraulic washing circuit of the machine to be reduced accordingly, so as to bring about a corresponding reduction in the overall energy usage (for instance, electric energy required to heat up the washing water).
  • such an optimum washing effectiveness of the water jets issued by the nozzles 7, which are in fact concentrated in an area defined by the radius R of the spray apparatus 4, may be advantageously used to reduce the power input rating of the circulation pump.
  • the pressure of the water supplying the water distribution circuit 4, 11 can be reduced, by for instance selectively decreasing the revolving speed of the circulation pump itself as this is described in the afore cited IT-A-1 256 273.
  • the water-generated noise is advantageously reduced along with the mechanical noise of the machine.
  • the circulation pump may be operated to rotate at approx. 1400 rpm, whereas it may be selectively operated to rotate at approx. 2800 rpm (ie. a usual speed at which pumps generally rotate in traditional dishwashers) if an intensive dishwashing cycle has to be carried out, as required for example to clean heavily soiled pans.
  • the energy usage (and in particular the water usage) of the dishwashing machine can be further reduced by eliminating the need for auxiliary propulsion nozzles to be used in order to rotatably drive the tubular arm 11 about the axis 13.
  • a turbine-like mechanism in correspondence of the end 12 of the tubular arm 11.
  • a gearwheel 15 that is secured to the bottom 5 of the washing vessel by means of a rod 16 extending along the rotation axis 13.
  • a turbine vane 17 which is adapted to be rotatably driven by the flow of water under pressure passing along the tubular arm 11, is capable of co-operating with said gearwheel 15.
  • the vane 17 and the reduction gear 18 shall be understood as being capable of pivoting on a pin (not shown for reasons of greater descriptive simplicity) anchored on the arm 11 in a position which is offset with respect to said rotation axis 13.
  • said mechanism 15-18 is also effective in making more rigid and stable the water distribution circuit 4, 11 which, notwithstanding its asymmetrical structure, is therefore able to rotate about the axis 13 in a manner that is substantially free of mechanical cloggings or jammings.

Landscapes

  • Nozzles (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Detergent Compositions (AREA)
EP00107218A 1999-05-03 2000-04-01 Machine à laver avec dispositif à jet epicycloidal Withdrawn EP1050263A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITPN990016U 1999-05-03
ITPN990016 IT248022Y1 (it) 1999-05-03 1999-05-03 Lavastoviglie con mulinello irroratore epicicloidale

Publications (2)

Publication Number Publication Date
EP1050263A2 true EP1050263A2 (fr) 2000-11-08
EP1050263A3 EP1050263A3 (fr) 2001-01-03

Family

ID=11395481

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00107218A Withdrawn EP1050263A3 (fr) 1999-05-03 2000-04-01 Machine à laver avec dispositif à jet epicycloidal

Country Status (2)

Country Link
EP (1) EP1050263A3 (fr)
IT (1) IT248022Y1 (fr)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1312296A1 (fr) * 2001-11-19 2003-05-21 International Steel Co. SpA Maschine à volume inférieur pour laver des objets
EP1634526A2 (fr) * 2004-09-10 2006-03-15 Electrolux Home Products Corporation N.V. Lave vaisselle avec dispositif d'arrosage
EP2052663A2 (fr) 2007-10-23 2009-04-29 Premark FEG L.L.C. Dispositif de lavage et/ou de rinçage à faible consommation d'eau et lave-vaisselle doté d'un tel dispositif
EP2067428A2 (fr) 2007-12-05 2009-06-10 Premark FEG L.L.C. Dispositif de lavage et/ou rinçage amélioré et lave-vaisselle doté d'un tel dispositif
WO2009076181A1 (fr) * 2007-12-05 2009-06-18 Premark Feg L.L.C. Dispositif de lavage et/ou de rinçage à faible consommation en eau et lave-vaisselle présentant un tel dispositif
ITTO20120199A1 (it) * 2012-03-08 2013-09-09 Bitron Spa Assieme per il lavaggio applicato ad una macchina lavatrice e/o asciugatrice.
ITTO20120200A1 (it) * 2012-03-08 2013-09-09 Bitron Spa Dispositivo per la movimentazione di giranti di lavaggio per dispositivi di lavaggio e o asciugatura.
WO2013132458A1 (fr) * 2012-03-08 2013-09-12 Bitron S.P.A. Ensemble lavage appliqué à un lave-linge et/ou sèche-linge
EP2679134A1 (fr) * 2012-06-25 2014-01-01 Candy S.p.A. Dispositif de pulvérisation auxiliaire pour lave-vaisselles
EP2705786A1 (fr) * 2012-09-07 2014-03-12 Samsung Electronics Co., Ltd Ensemble de buse pour lave-vaisselle et lave-vaisselle l'utilisant
ITTO20120793A1 (it) * 2012-09-14 2014-03-15 Elbi Int Spa Dispositivo valvolare di deviazione, in particolare per una macchina lavatrice, quale una lavastoviglie
US20150000708A1 (en) * 2013-06-27 2015-01-01 Whirlpool Corporation Dishwasher
WO2015149859A1 (fr) * 2014-04-03 2015-10-08 Electrolux Appliances Aktiebolag Agencement de bras de lavage
US20150359408A1 (en) * 2014-06-13 2015-12-17 General Electric Company Spray arm assembly for dishwasher appliance
EP3120746A1 (fr) * 2015-07-23 2017-01-25 Lg Electronics Inc. Lave-vaisselle
KR20170011508A (ko) * 2015-07-23 2017-02-02 엘지전자 주식회사 식기 세척기
EP2708177A3 (fr) * 2012-09-13 2017-06-21 Whirlpool Corporation Lave-vaisselle avec pulvérisateur à disque
US10149593B2 (en) 2016-10-07 2018-12-11 Haier Us Appliance Solutions, Inc. Spray arm assembly for dishwasher appliance
CN109965816A (zh) * 2017-12-28 2019-07-05 宁波方太厨具有限公司 一种清洗机
EP3836824A4 (fr) * 2018-08-13 2022-04-20 Arçelik Anonim Sirketi Lave-vaisselle à performance de lavage améliorée
EP4098172A1 (fr) * 2021-06-03 2022-12-07 Belimed Life Science AG Dispositif de pulvérisation pour une machine de nettoyage permettant de nettoyer des ustensiles médicaux, pharmaceutiques et/ou de laboratoire
EP4252611A1 (fr) 2022-03-31 2023-10-04 D&P S.r.l. Lave-vaisselle
USD1026361S1 (en) 2022-02-11 2024-05-07 Whirlpool Corporation Wash system for a dish treating appliance

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1392476A (en) * 1920-09-27 1921-10-04 H B Corp Dish-washing machine
GB2221384A (en) * 1988-08-03 1990-02-07 Creda Ltd Automatic dishwasher
DE4416655A1 (de) * 1994-05-11 1995-11-16 Heinz Gutoehrlein Sprüharm für Spülmaschinen
US5477874A (en) * 1993-08-13 1995-12-26 Matsushita Electric Industrial Co., Ltd. Dishwasher
US5579789A (en) * 1995-01-04 1996-12-03 Whirlpool Corporation Food soil handling system for a dishwasher

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1392476A (en) * 1920-09-27 1921-10-04 H B Corp Dish-washing machine
GB2221384A (en) * 1988-08-03 1990-02-07 Creda Ltd Automatic dishwasher
US5477874A (en) * 1993-08-13 1995-12-26 Matsushita Electric Industrial Co., Ltd. Dishwasher
DE4416655A1 (de) * 1994-05-11 1995-11-16 Heinz Gutoehrlein Sprüharm für Spülmaschinen
US5579789A (en) * 1995-01-04 1996-12-03 Whirlpool Corporation Food soil handling system for a dishwasher

Cited By (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1312296A1 (fr) * 2001-11-19 2003-05-21 International Steel Co. SpA Maschine à volume inférieur pour laver des objets
EP1634526A2 (fr) * 2004-09-10 2006-03-15 Electrolux Home Products Corporation N.V. Lave vaisselle avec dispositif d'arrosage
EP1634526A3 (fr) * 2004-09-10 2009-10-21 Electrolux Home Products Corporation N.V. Lave vaisselle avec dispositif d'arrosage
EP2545838A1 (fr) 2004-09-10 2013-01-16 Electrolux Home Products Corporation N.V. Lave-vaisselle doté d'un dispositif de vaporisation
EP2052663A2 (fr) 2007-10-23 2009-04-29 Premark FEG L.L.C. Dispositif de lavage et/ou de rinçage à faible consommation d'eau et lave-vaisselle doté d'un tel dispositif
EP2067428A2 (fr) 2007-12-05 2009-06-10 Premark FEG L.L.C. Dispositif de lavage et/ou rinçage amélioré et lave-vaisselle doté d'un tel dispositif
WO2009076181A1 (fr) * 2007-12-05 2009-06-18 Premark Feg L.L.C. Dispositif de lavage et/ou de rinçage à faible consommation en eau et lave-vaisselle présentant un tel dispositif
ITTO20120200A1 (it) * 2012-03-08 2013-09-09 Bitron Spa Dispositivo per la movimentazione di giranti di lavaggio per dispositivi di lavaggio e o asciugatura.
ITTO20120199A1 (it) * 2012-03-08 2013-09-09 Bitron Spa Assieme per il lavaggio applicato ad una macchina lavatrice e/o asciugatrice.
WO2013132459A1 (fr) * 2012-03-08 2013-09-12 Bitron S.P.A. Dispositif permettant de déplacer des turbines de lavage pour dispositifs de lavage et/ou de séchage
WO2013132458A1 (fr) * 2012-03-08 2013-09-12 Bitron S.P.A. Ensemble lavage appliqué à un lave-linge et/ou sèche-linge
CN104271024A (zh) * 2012-03-08 2015-01-07 比特朗股份公司 用于使得用于清洗装置和/或烘干装置的清洗叶轮运动的装置
EP2679134A1 (fr) * 2012-06-25 2014-01-01 Candy S.p.A. Dispositif de pulvérisation auxiliaire pour lave-vaisselles
EP2705786A1 (fr) * 2012-09-07 2014-03-12 Samsung Electronics Co., Ltd Ensemble de buse pour lave-vaisselle et lave-vaisselle l'utilisant
CN103654667B (zh) * 2012-09-07 2018-12-18 三星电子株式会社 用于洗碗机的喷嘴组件和具有该喷嘴组件的洗碗机
CN103654667A (zh) * 2012-09-07 2014-03-26 三星电子株式会社 用于洗碗机的喷嘴组件和具有该喷嘴组件的洗碗机
US9462927B2 (en) 2012-09-07 2016-10-11 Samsung Electronics Co., Ltd. Nozzle assembly for dishwasher and dishwasher having the same
EP2708177A3 (fr) * 2012-09-13 2017-06-21 Whirlpool Corporation Lave-vaisselle avec pulvérisateur à disque
US9228663B2 (en) 2012-09-14 2016-01-05 Elbi International Spa Diverter valve device, in particular for a washing machine, such as a dishwasher
ITTO20120793A1 (it) * 2012-09-14 2014-03-15 Elbi Int Spa Dispositivo valvolare di deviazione, in particolare per una macchina lavatrice, quale una lavastoviglie
EP2708178A1 (fr) * 2012-09-14 2014-03-19 ELBI International S.p.A. Dispositif de soupape de dérivation, en particulier pour une machine à laver, tel qu'un lave-vaisselle
US20150000708A1 (en) * 2013-06-27 2015-01-01 Whirlpool Corporation Dishwasher
US11019981B2 (en) 2013-06-27 2021-06-01 Whirlpool Corporation Dishwasher with rotationally mounted sprayer
US10820780B2 (en) * 2013-06-27 2020-11-03 Whirlpool Corporation Dishwasher
US10667668B2 (en) * 2013-06-27 2020-06-02 Whirlpool Corporation Dishwasher with rotationally mounted sprayer
WO2015149859A1 (fr) * 2014-04-03 2015-10-08 Electrolux Appliances Aktiebolag Agencement de bras de lavage
US9635994B2 (en) * 2014-06-13 2017-05-02 Haier Us Appliance Solutions, Inc. Spray arm assembly for dishwasher appliance
US20150359408A1 (en) * 2014-06-13 2015-12-17 General Electric Company Spray arm assembly for dishwasher appliance
KR20170011508A (ko) * 2015-07-23 2017-02-02 엘지전자 주식회사 식기 세척기
US10349811B2 (en) 2015-07-23 2019-07-16 Lg Electronics Inc. Dishwasher
AU2016295237B2 (en) * 2015-07-23 2018-11-15 Lg Electronics Inc. Dishwasher
US10743741B2 (en) 2015-07-23 2020-08-18 Lg Electronics Inc. Dishwasher
EP3120746A1 (fr) * 2015-07-23 2017-01-25 Lg Electronics Inc. Lave-vaisselle
US10149593B2 (en) 2016-10-07 2018-12-11 Haier Us Appliance Solutions, Inc. Spray arm assembly for dishwasher appliance
CN109965816A (zh) * 2017-12-28 2019-07-05 宁波方太厨具有限公司 一种清洗机
CN109965816B (zh) * 2017-12-28 2024-01-16 宁波方太厨具有限公司 一种清洗机
EP3836824A4 (fr) * 2018-08-13 2022-04-20 Arçelik Anonim Sirketi Lave-vaisselle à performance de lavage améliorée
EP4098172A1 (fr) * 2021-06-03 2022-12-07 Belimed Life Science AG Dispositif de pulvérisation pour une machine de nettoyage permettant de nettoyer des ustensiles médicaux, pharmaceutiques et/ou de laboratoire
USD1026361S1 (en) 2022-02-11 2024-05-07 Whirlpool Corporation Wash system for a dish treating appliance
EP4252611A1 (fr) 2022-03-31 2023-10-04 D&P S.r.l. Lave-vaisselle

Also Published As

Publication number Publication date
IT248022Y1 (it) 2002-12-09
ITPN990016U1 (it) 2000-11-03
EP1050263A3 (fr) 2001-01-03
ITPN990016V0 (it) 1999-05-03

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