EP0786231B1 - Hydraulic connection device for a dishwasher rack which can be positioned at two different heights - Google Patents

Hydraulic connection device for a dishwasher rack which can be positioned at two different heights Download PDF

Info

Publication number
EP0786231B1
EP0786231B1 EP97830020A EP97830020A EP0786231B1 EP 0786231 B1 EP0786231 B1 EP 0786231B1 EP 97830020 A EP97830020 A EP 97830020A EP 97830020 A EP97830020 A EP 97830020A EP 0786231 B1 EP0786231 B1 EP 0786231B1
Authority
EP
European Patent Office
Prior art keywords
chamber
inlet
rack
outlet
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.)
Expired - Lifetime
Application number
EP97830020A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0786231A2 (en
EP0786231A3 (en
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
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 Smeg SpA filed Critical Smeg SpA
Publication of EP0786231A2 publication Critical patent/EP0786231A2/en
Publication of EP0786231A3 publication Critical patent/EP0786231A3/en
Application granted granted Critical
Publication of EP0786231B1 publication Critical patent/EP0786231B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • A47L15/508—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 (see FR-A-2 508 789).
  • 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 (see FR-A-2 683 444) 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 above-mentioned 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 third 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 Hydraulic connection device for a dishwasher rack which can be positioned at two different heights Expired - Lifetime EP0786231B1 (en)

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 EP0786231A2 (en) 1997-07-30
EP0786231A3 EP0786231A3 (en) 1997-10-08
EP0786231B1 true EP0786231B1 (en) 2000-03-29

Family

ID=11373056

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97830020A Expired - Lifetime EP0786231B1 (en) 1996-01-29 1997-01-28 Hydraulic connection device for a dishwasher rack which can be positioned at two different heights

Country Status (4)

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

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU3566297A (en) * 1996-07-17 1998-02-09 Arcelik A.S. Detachable hydraulic coupling or flow distribution valve for use in the household dishwasher
IT1284791B1 (it) * 1996-09-11 1998-05-21 Merloni Elettrodomestici Spa Macchina lavastoviglie a circuito idraulico migliorato.
IT1289970B1 (it) * 1997-02-25 1998-10-19 Smeg Spa Dispositivo di collegamento idraulico per cestello di lavastoviglie posizionabile a due altezze diverse
IT1290112B1 (it) * 1997-03-18 1998-10-19 Smeg Spa Dispositivo di cellegamento idraulico per cestello di lavastoviglie posizionabile a due altezze diverse
US20090090400A1 (en) * 2007-05-04 2009-04-09 Electrolux Home Products, Inc. Water Delivery System For Multi-Position Spray Arm Of A Dishwasher
DE102007041307A1 (de) * 2007-08-31 2009-03-05 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine
CA2766321C (en) * 2009-06-23 2017-09-05 Electrolux Home Products Corporation N.V. Dishwasher, especially domestic dishwasher
CN203447254U (zh) * 2013-07-10 2014-02-26 美的集团股份有限公司 喷臂水路连接结构和洗碗机
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
US12290225B2 (en) 2017-09-29 2025-05-06 Midea Group Co., Ltd. Dishwasher with walking tubular spray element
US11071440B2 (en) 2018-09-14 2021-07-27 Midea Group Co., Ltd. Dishwasher with rack-mounted conduit return mechanism
US10631708B2 (en) 2018-09-14 2020-04-28 Midea Group Co., Ltd. Dishwasher with docking arrangement for elevation-adjustable rack
US11000176B2 (en) 2018-09-14 2021-05-11 Midea Group Co., Ltd. Dishwasher with rotatable diverter valve
US10765291B2 (en) 2018-09-14 2020-09-08 Midea Group Co., Ltd. Dishwasher with check valve in rotatable docking port
US11045066B2 (en) 2019-03-11 2021-06-29 Midea Group Co., Ltd. Dishwasher with keyed coupling to rack-mounted conduit
US11191416B2 (en) 2019-09-30 2021-12-07 Midea Group Co., Ltd. Dishwasher with image-based position sensor
US11484183B2 (en) 2019-09-30 2022-11-01 Midea Group Co., Ltd. Dishwasher with image-based object sensing
US11464389B2 (en) 2019-09-30 2022-10-11 Midea Group Co., Ltd. Dishwasher with image-based detergent sensing
US11026559B2 (en) 2019-09-30 2021-06-08 Midea Group Co., Ltd. Dishwasher with image-based fluid condition sensing
US11399690B2 (en) 2019-09-30 2022-08-02 Midea Group Co., Ltd. Dishwasher with cam-based position sensor
US11259681B2 (en) 2019-09-30 2022-03-01 Midea Group Co., Ltd Dishwasher with image-based diagnostics
US11185209B2 (en) 2019-11-20 2021-11-30 Midea Group Co., Ltd. Dishwasher steam generator
US11202550B2 (en) 2019-11-20 2021-12-21 Midea Group Co., Ltd. Dishwasher thermal imaging system
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

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

Also Published As

Publication number Publication date
ITMI960150A0 (enrdf_load_stackoverflow) 1996-01-29
DE69701535D1 (de) 2000-05-04
DE69701535T2 (de) 2000-08-24
EP0786231A2 (en) 1997-07-30
ES2144837T3 (es) 2000-06-16
EP0786231A3 (en) 1997-10-08
IT1282096B1 (it) 1998-03-12
ITMI960150A1 (it) 1997-07-29

Similar Documents

Publication Publication Date Title
EP0786231B1 (en) Hydraulic connection device for a dishwasher rack which can be positioned at two different heights
EP0864291A1 (en) Hydraulic connection device for a dishwasher rack which can be positioned at two different heights
KR102487867B1 (ko) 식기세척기
CN104545751A (zh) 水槽式清洗机的透气、溢水保护和清洗剂添加装置
EP0401767B1 (en) A dishwasher having a removable, vertically adjustable basket
EP1437082B1 (en) Dish washer and device for controlling the flow of washing water
CN204379205U (zh) 水槽式清洗机的透气、溢水保护和清洗剂添加装置
RU2062668C1 (ru) Узел очистки поточного молокомера
US5339768A (en) Floor watering system for feeding water to animals
EP0872208B1 (en) Hydraulic connection device for a dishwasher rack which can be positioned at two different heights
EP0766945B1 (en) Device for washing the ceiling of a dishwasher's tank
US4256136A (en) Mechanically operated level control for dishwashers
EP0829221A2 (en) Dishwashing machine with improved hydraulic circuit
IE46328B1 (en) A valve unit for a liquid flow sensing device
US4301829A (en) Flood control for a dishwasher
CN113403813A (zh) 一种洗衣机的手自一体进水机构及其控制方法
CN108079637A (zh) 一种自动防漏直冲式自来水前置过滤器
CN214329139U (zh) 一种坐便器用的水路输送系统
US20200029780A1 (en) Dishwasher
CN220327422U (zh) 一种清洗机
CN216984848U (zh) 一种用于清洗机的呼吸器及清洗机
EP1016813A1 (en) An easy-assembled automatic air-relief valve
CN114403771B (zh) 用于清洗机的干燥组件及清洗机
CN212509766U (zh) 一种阀门
CN114688312B (zh) 一种分水阀及应用有该分水阀的清洗机

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE ES FR GB IT SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE ES FR GB IT SE

17P Request for examination filed

Effective date: 19980327

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 19990525

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

ITF It: translation for a ep patent filed
GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT SE

REF Corresponds to:

Ref document number: 69701535

Country of ref document: DE

Date of ref document: 20000504

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2144837

Country of ref document: ES

Kind code of ref document: T3

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20060131

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20070110

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20070111

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20070119

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20070130

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20070111

Year of fee payment: 11

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20080128

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080801

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20081029

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080128

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080129

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20080129

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080129

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070128