EP0786231A2 - Hydraulische Verbindungsvorrichtung für einen auf zwei unterschiedlichen Höhen positionierbaren Geschirrkorb - Google Patents

Hydraulische Verbindungsvorrichtung für einen auf zwei unterschiedlichen Höhen positionierbaren Geschirrkorb Download PDF

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Publication number
EP0786231A2
EP0786231A2 EP97830020A EP97830020A EP0786231A2 EP 0786231 A2 EP0786231 A2 EP 0786231A2 EP 97830020 A EP97830020 A EP 97830020A EP 97830020 A EP97830020 A EP 97830020A EP 0786231 A2 EP0786231 A2 EP 0786231A2
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EP
European Patent Office
Prior art keywords
inlet
outlet
chamber
rack
shutter
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
EP97830020A
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English (en)
French (fr)
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EP0786231A3 (de
EP0786231B1 (de
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
Original Assignee
Smeg SpA
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Publication date
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Publication of EP0786231A3 publication Critical patent/EP0786231A3/de
Application granted granted Critical
Publication of EP0786231B1 publication Critical patent/EP0786231B1/de
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    • 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
    • A47L15/508—Hydraulic connections for racks
    • 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

Definitions

  • the present invention relates to dishwashers having the upper rack which can be positioned at two different heights, and in particular to a hydraulic connection device for said type of rack.
  • a first solution is having a double outlet at the end of the supply pipe extending from the pump to the upper sprinkler, and keeping closed the outlet not in use according to the rack position.
  • This can be achieved by providing on each outlet of the supply pipe a shutter which remains closed if said outlet is not in use, e.g. by means of an internal spring.
  • an axial pin projecting from the feed duct of the upper rack sprinkler is inserted into an outlet, said pin causes the opening of the corresponding shutter by overcoming the spring resistance.
  • the sprinkler feed duct may carry a pair of end shutters integral therewith, one above and one below. In this way, when an outlet is connected to the feed duct the other outlet is closed by the corresponding upper or lower shutter by pushing the rack upto the rear wall of the tank.
  • Both these devices have a first drawback of greater dimensions and manufacturing complexity due to the need of providing a double outlet in the rear wall of the tank.
  • a second drawback is the greater flow resistance caused by the presence of the second outlet not in use, where there is a stagnation and/or a recirculation of the water arriving at the top of the supply pipe.
  • Another drawback of the internal spring shutter is that the spring is critical for a correct working thereof without leaks from the outlet not in use, whereby the device will be ineffective if the spring moves around or bends.
  • the rack-carried shutters there is no effective tightness if the rack is not pushed well back to the rear wall, which can also occur due to the vibrations during the dishwasher operation.
  • a second solution is forming a single outlet in the tank, as in conventional dishwashers, and providing the end of the sprinkler feed duct with a wide water-collecting cap.
  • Said cap is high enough to enclose the outlet of the supply pipe in both the possible rack positions, and the tightness is achieved by having the cap abut against the rear wall of the tank.
  • this solution has the drawback of a significant flow resistance caused by the recirculation of water within the wide cap prior to the entrance into the feed duct. Furthermore, also in this case there is the problem of the tightness depending from the correct positioning of the rack.
  • the object of the present invention is to provide a hydraulic connection device for the upper rack suitable to overcome the abovementioned drawbacks of prior art devices.
  • a first fundamental advantage of the device according to the present invention is its structural simplicity, which assures a cheap manufacturing and a reliable working.
  • a second advantage of the present device stems from the fact that the tightness is assured by the pressure of the water flow itself, even if the rack is not perfectly pushed backwards along its guides.
  • Still another advantage of the present device is the little flow resistance achieved by placing the shutter out of the main water flow.
  • the first embodiment essentially consists of an upper sprinkler feed duct 1 provided at the rear end with an enlarged chamber 2 divided into an upper inlet 3 and a lower inlet 3', which are identical and separate.
  • These inlets 3, 3' can be alternately closed by a vane shutter 4 which rotates within chamber 2 around a horizontal pivot 5 located on the division wall between the two inlets, in correspondence with the axis of duct 1.
  • Inlets 3, 3' are sized and shaped so as to fit externally on outlet 7 of the supply pipe 8, which projects from the rear wall 9 of the washing tank. The tightness between outlet 7 and inlet 3 or 3' is assured by a gasket 10.
  • the second embodiment illustrated in figs.3a, 3b, 4a and 4b is different from the previous embodiment only in the mechanism for closing the inlet not in use.
  • the rotating vane 4 is replaced by a ball 11 which slides within chamber 2' along a guide rim 12 until it closes one of the inlets 3, 3' which are properly shaped with a circular seat.
  • Chamber 2' is longer than chamber 2 in order to allow a smooth motion of ball 11 between the two closing positions.
  • the closing of the lower inlet 3' is made easier by gravity, which tends to pull down vane 4 or ball 11 from the upper position to the lower position.
  • the second embodiment illustrated in figs.5 and 6 is similar to the first embodiment but it includes two vane shutters 4' and 4" for the upper inlet 3 and the lower inlet 3', respectively. Furthermore, the enlarged chamber 2" is not centered with respect to the axis of the feed duct 1 but it extends upwards, whereby duct 1 is aligned with the lower inlet 3'.
  • the outlet 7 of the supply pipe 8 may also be provided with tapered rims 13 which facilitate the entrance into inlet 3, 3' and open the vane shutters 4', 4". However, the presence of rims 13 is not strictly necessary in that vanes 4', 4" open anyway due to the action of the water under pressure and they close by gravity, since they are pivoted along their upper edge.

Landscapes

  • Washing And Drying Of Tableware (AREA)
EP97830020A 1996-01-29 1997-01-28 Hydraulische Verbindungsvorrichtung für einen auf zwei unterschiedlichen Höhen positionierbaren Geschirrkorb Expired - Lifetime EP0786231B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI960150 1996-01-29
IT96MI000150A IT1282096B1 (it) 1996-01-29 1996-01-29 Dispositivo di collegamento idraulico per cestello di lavastoviglie posizionabile a due altezze diverse

Publications (3)

Publication Number Publication Date
EP0786231A2 true EP0786231A2 (de) 1997-07-30
EP0786231A3 EP0786231A3 (de) 1997-10-08
EP0786231B1 EP0786231B1 (de) 2000-03-29

Family

ID=11373056

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97830020A Expired - Lifetime EP0786231B1 (de) 1996-01-29 1997-01-28 Hydraulische Verbindungsvorrichtung für einen auf zwei unterschiedlichen Höhen positionierbaren Geschirrkorb

Country Status (4)

Country Link
EP (1) EP0786231B1 (de)
DE (1) DE69701535T2 (de)
ES (1) ES2144837T3 (de)
IT (1) IT1282096B1 (de)

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0829221A3 (de) * 1996-09-11 1998-08-12 Merloni Elettrodomestici S.p.A. Geschirrspülmaschine mit verbessertem Hydraulikkreislauf
EP0864291A1 (de) * 1997-02-25 1998-09-16 SMEG S.p.A. Hydraulische Verbindungsvorrichtung für einen auf zwei unterschiedliche Höhen positionierbaren Geschirrkorb
EP0872208A1 (de) * 1997-03-18 1998-10-21 SMEG S.p.A. Hydraulische Verbindungsvorrichtung für einen auf zwei unterschiedliche Höhen positionierbaren Geschirrkorb
EP0918482B1 (de) * 1996-07-17 2004-10-27 Arcelik S.A. Lösbare hydraulische verbindung oder flussigkeitsverteilungsventil für haushaltgeschirrspülmaschine
WO2008137818A1 (en) * 2007-05-04 2008-11-13 Electrolux Home Products, Inc. Water delivery system for multi-position spray arm of a dishwasher
WO2010149343A1 (en) * 2009-06-23 2010-12-29 Electrolux Home Products Corporation N.V. Dishwasher, especially domestic dishwasher
US8561624B2 (en) * 2007-08-31 2013-10-22 Bsh Bosch Und Siemens Hausgeraete Gmbh Hydraulic coupling of a vertically adjustable dish basket of a dishwasher
WO2015003646A1 (zh) * 2013-07-10 2015-01-15 佛山市顺德区美的洗涤电器制造有限公司 喷臂水路连接装置和具有其的洗碗机
US10524634B2 (en) 2017-09-29 2020-01-07 Midea Group Co., Ltd. Dishwasher with combined liquid and air sprayers
US10531781B2 (en) 2017-09-29 2020-01-14 Midea Group Co., Ltd. Dishwasher with discretely directable tubular spray elements
US10631708B2 (en) 2018-09-14 2020-04-28 Midea Group Co., Ltd. Dishwasher with docking arrangement for elevation-adjustable rack
US10765291B2 (en) 2018-09-14 2020-09-08 Midea Group Co., Ltd. Dishwasher with check valve in rotatable docking port
US11000176B2 (en) 2018-09-14 2021-05-11 Midea Group Co., Ltd. Dishwasher with rotatable diverter valve
US11026559B2 (en) 2019-09-30 2021-06-08 Midea Group Co., Ltd. Dishwasher with image-based fluid condition sensing
US11045066B2 (en) 2019-03-11 2021-06-29 Midea Group Co., Ltd. Dishwasher with keyed coupling to rack-mounted conduit
US11071440B2 (en) 2018-09-14 2021-07-27 Midea Group Co., Ltd. Dishwasher with rack-mounted conduit return mechanism
US11185209B2 (en) 2019-11-20 2021-11-30 Midea Group Co., Ltd. Dishwasher steam generator
US11191416B2 (en) 2019-09-30 2021-12-07 Midea Group Co., Ltd. Dishwasher with image-based position sensor
US11202550B2 (en) 2019-11-20 2021-12-21 Midea Group Co., Ltd. Dishwasher thermal imaging system
US11259681B2 (en) 2019-09-30 2022-03-01 Midea Group Co., Ltd Dishwasher with image-based diagnostics
US11399690B2 (en) 2019-09-30 2022-08-02 Midea Group Co., Ltd. Dishwasher with cam-based position sensor
US11412912B2 (en) 2020-09-21 2022-08-16 Midea Group Co., Ltd. Dishwasher with tubular spray element slip ring alignment
US11464389B2 (en) 2019-09-30 2022-10-11 Midea Group Co., Ltd. Dishwasher with image-based detergent sensing
US11484180B2 (en) 2020-11-11 2022-11-01 Midea Group Co., Ltd. Dishwasher with tubular spray element including multiple selectable spray patterns
US11484183B2 (en) 2019-09-30 2022-11-01 Midea Group Co., Ltd. Dishwasher with image-based object sensing
US11497374B2 (en) 2020-02-19 2022-11-15 Midea Group Co., Ltd. Dishwasher with wall-mounted rotatable conduit
US11826001B2 (en) 2022-02-15 2023-11-28 Midea Group Co., Ltd. Dishwasher with tubular spray element including elongated metal tube and retaining tab for mounting support member thereto
US12245735B2 (en) 2022-02-25 2025-03-11 Midea Group Co., Ltd. Dishwasher including tubular spray element with intermediate support and/or fluid inlet
US12290225B2 (en) 2017-09-29 2025-05-06 Midea Group Co., Ltd. Dishwasher with walking tubular spray element
US12329341B2 (en) 2023-06-28 2025-06-17 Midea Group Co., Ltd. Dishwasher with rack-mounted tubular spray element assembly

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2355271A1 (de) * 1973-11-06 1975-05-07 Licentia Gmbh Geschirrspuelmaschine
SE444884B (sv) * 1980-03-11 1986-05-20 Electrolux Ab Hushallsdiskmaskin
SE442703B (sv) * 1981-11-24 1986-01-27 Electrolux Ab Kopplingsanordning for ett i en diskmaskin anordnat spolsystem
IT1234696B (it) * 1989-06-06 1992-05-26 Zanussi A Spa Industrie Lavastoviglie con cesto estraibile regolabile in altezza.
DE4137227C2 (de) * 1991-11-13 1999-12-16 Aeg Hausgeraete Gmbh Haushalt-Geschirrspülmaschine mit höhenverstellbarem Oberkorb

Cited By (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0918482B1 (de) * 1996-07-17 2004-10-27 Arcelik S.A. Lösbare hydraulische verbindung oder flussigkeitsverteilungsventil für haushaltgeschirrspülmaschine
EP0829221A3 (de) * 1996-09-11 1998-08-12 Merloni Elettrodomestici S.p.A. Geschirrspülmaschine mit verbessertem Hydraulikkreislauf
EP0864291A1 (de) * 1997-02-25 1998-09-16 SMEG S.p.A. Hydraulische Verbindungsvorrichtung für einen auf zwei unterschiedliche Höhen positionierbaren Geschirrkorb
EP0872208A1 (de) * 1997-03-18 1998-10-21 SMEG S.p.A. Hydraulische Verbindungsvorrichtung für einen auf zwei unterschiedliche Höhen positionierbaren Geschirrkorb
WO2008137818A1 (en) * 2007-05-04 2008-11-13 Electrolux Home Products, Inc. Water delivery system for multi-position spray arm of a dishwasher
US8561624B2 (en) * 2007-08-31 2013-10-22 Bsh Bosch Und Siemens Hausgeraete Gmbh Hydraulic coupling of a vertically adjustable dish basket of a dishwasher
AU2010265067B2 (en) * 2009-06-23 2016-06-16 Electrolux Home Products Corporation N.V. Dishwasher, especially domestic dishwasher
CN102458214A (zh) * 2009-06-23 2012-05-16 伊莱克斯家用产品股份有限公司 洗碟机、特别地家用洗碟机
CN102458214B (zh) * 2009-06-23 2014-09-10 伊莱克斯家用产品股份有限公司 洗碟机、特别地家用洗碟机
WO2010149343A1 (en) * 2009-06-23 2010-12-29 Electrolux Home Products Corporation N.V. Dishwasher, especially domestic dishwasher
WO2015003646A1 (zh) * 2013-07-10 2015-01-15 佛山市顺德区美的洗涤电器制造有限公司 喷臂水路连接装置和具有其的洗碗机
US12290225B2 (en) 2017-09-29 2025-05-06 Midea Group Co., Ltd. Dishwasher with walking tubular spray element
US10531781B2 (en) 2017-09-29 2020-01-14 Midea Group Co., Ltd. Dishwasher with discretely directable tubular spray elements
US10524634B2 (en) 2017-09-29 2020-01-07 Midea Group Co., Ltd. Dishwasher with combined liquid and air sprayers
US11058279B2 (en) 2017-09-29 2021-07-13 Midea Group Co., Ltd. Dishwasher with discretely directable tubular spray elements
US11800963B2 (en) 2017-09-29 2023-10-31 Midea Group Co., Ltd. Dishwasher with discretely directable tubular spray elements
US10631708B2 (en) 2018-09-14 2020-04-28 Midea Group Co., Ltd. Dishwasher with docking arrangement for elevation-adjustable rack
US10765291B2 (en) 2018-09-14 2020-09-08 Midea Group Co., Ltd. Dishwasher with check valve in rotatable docking port
US11000176B2 (en) 2018-09-14 2021-05-11 Midea Group Co., Ltd. Dishwasher with rotatable diverter valve
US11071440B2 (en) 2018-09-14 2021-07-27 Midea Group Co., Ltd. Dishwasher with rack-mounted conduit return mechanism
US12268347B2 (en) 2018-09-14 2025-04-08 Midea Group Co., Ltd. Dishwasher with rotatable diverter valve
US11045066B2 (en) 2019-03-11 2021-06-29 Midea Group Co., Ltd. Dishwasher with keyed coupling to rack-mounted conduit
US11766160B2 (en) 2019-09-30 2023-09-26 Midea Group Co., Ltd. Dishwasher with image-based position sensor
US11877711B2 (en) 2019-09-30 2024-01-23 Midea Group Co., Ltd. Dishwasher with image-based detergent sensing
US11399690B2 (en) 2019-09-30 2022-08-02 Midea Group Co., Ltd. Dishwasher with cam-based position sensor
US11026559B2 (en) 2019-09-30 2021-06-08 Midea Group Co., Ltd. Dishwasher with image-based fluid condition sensing
US11464389B2 (en) 2019-09-30 2022-10-11 Midea Group Co., Ltd. Dishwasher with image-based detergent sensing
US12251066B2 (en) 2019-09-30 2025-03-18 Midea Group Co., Ltd. Dishwasher with image-based diagnostics
US11484183B2 (en) 2019-09-30 2022-11-01 Midea Group Co., Ltd. Dishwasher with image-based object sensing
US12042111B2 (en) 2019-09-30 2024-07-23 Midea Group Co., Ltd. Dishwasher with cam-based position sensor
US11896182B2 (en) 2019-09-30 2024-02-13 Midea Group Co., Ltd. Dishwasher with image-based object sensing
US11191416B2 (en) 2019-09-30 2021-12-07 Midea Group Co., Ltd. Dishwasher with image-based position sensor
US11889966B2 (en) 2019-09-30 2024-02-06 Midea Group Co., Ltd. Dishwasher with image-based object sensing
US11259681B2 (en) 2019-09-30 2022-03-01 Midea Group Co., Ltd Dishwasher with image-based diagnostics
US11864705B2 (en) 2019-11-20 2024-01-09 Midea Group Co., Ltd. Dishwasher thermal imaging system
US11202550B2 (en) 2019-11-20 2021-12-21 Midea Group Co., Ltd. Dishwasher thermal imaging system
US11185209B2 (en) 2019-11-20 2021-11-30 Midea Group Co., Ltd. Dishwasher steam generator
US11497374B2 (en) 2020-02-19 2022-11-15 Midea Group Co., Ltd. Dishwasher with wall-mounted rotatable conduit
US11412912B2 (en) 2020-09-21 2022-08-16 Midea Group Co., Ltd. Dishwasher with tubular spray element slip ring alignment
US11484180B2 (en) 2020-11-11 2022-11-01 Midea Group Co., Ltd. Dishwasher with tubular spray element including multiple selectable spray patterns
US11826001B2 (en) 2022-02-15 2023-11-28 Midea Group Co., Ltd. Dishwasher with tubular spray element including elongated metal tube and retaining tab for mounting support member thereto
US12245735B2 (en) 2022-02-25 2025-03-11 Midea Group Co., Ltd. Dishwasher including tubular spray element with intermediate support and/or fluid inlet
US12329341B2 (en) 2023-06-28 2025-06-17 Midea Group Co., Ltd. Dishwasher with rack-mounted tubular spray element assembly

Also Published As

Publication number Publication date
ES2144837T3 (es) 2000-06-16
DE69701535D1 (de) 2000-05-04
IT1282096B1 (it) 1998-03-12
EP0786231A3 (de) 1997-10-08
EP0786231B1 (de) 2000-03-29
ITMI960150A1 (it) 1997-07-29
DE69701535T2 (de) 2000-08-24
ITMI960150A0 (de) 1996-01-29

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