EP1813182A1 - Geschirrspülmaschine mit verbessertem hydraulischen Kreis - Google Patents

Geschirrspülmaschine mit verbessertem hydraulischen Kreis Download PDF

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Publication number
EP1813182A1
EP1813182A1 EP06425044A EP06425044A EP1813182A1 EP 1813182 A1 EP1813182 A1 EP 1813182A1 EP 06425044 A EP06425044 A EP 06425044A EP 06425044 A EP06425044 A EP 06425044A EP 1813182 A1 EP1813182 A1 EP 1813182A1
Authority
EP
European Patent Office
Prior art keywords
deliveries
delivery
slide valve
wash
valve
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Withdrawn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
EP06425044A
Other languages
English (en)
French (fr)
Inventor
Andrea Ambrosi
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 EP06425044A priority Critical patent/EP1813182A1/de
Publication of EP1813182A1 publication Critical patent/EP1813182A1/de
Withdrawn legal-status Critical Current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
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4219—Water recirculation
    • A47L15/4221—Arrangements for redirection of washing water, e.g. water diverters to selectively supply the spray arms
    • 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
    • A47L2301/00—Manual input in controlling methods of washing or rinsing machines for crockery or tableware, i.e. information entered by a user
    • A47L2301/04—Operation mode, e.g. delicate washing, economy washing, reduced time, sterilizing, water softener regenerating, odor eliminating or service

Definitions

  • the present invention relates to dishwashers, and in particular to a dishwasher provided with a hydraulic circuit that allows the user to choose between the alternate or simultaneous wash on the two racks.
  • This type of program is usually obtained through a single-delivery wash pump and a flow distribution valve controlled by the control unit of the machine to direct the water flow to the upper or lower sprinkler.
  • a single-delivery wash pump and a flow distribution valve controlled by the control unit of the machine to direct the water flow to the upper or lower sprinkler.
  • this conventional arrangement implies the impossibility of being able to wash simultaneously on both racks and this is a strong limitation to the flexibility of use of the machine.
  • Another alternative is a dishwasher with a double-delivery pump combined with two shut-off valves that independently control the supply to the two sprinklers in the respective delivery ducts.
  • the main drawback is the difficulty in synchronizing the opening and closing of the two valves in order to prevent, during the alternate operation, a sudden increase in the delivery cross-section that can lead to cavitation of the pump that operates with a reduced amount of water.
  • the valves have to be motor-driven to guarantee a sufficient switching speed and this makes them less reliable and particularly expensive, and also the electronic unit controlling them will be expensive.
  • the object of the present invention is to provide a dishwasher that overcomes the above-mentioned drawbacks.
  • This object is achieved by means of a dishwasher having an arrangement similar to the last one mentioned above but in which at least one of the two shut-off valves is replaced by a slide valve with one inlet and two outlets, a first outlet of said slide valve being connected to one of the delivery ducts and the second outlet being in communication with the other delivery duct through a substantially Y-shaped connector.
  • the main advantage of the dishwasher according to the present invention is that of achieving the same function of alternate or simultaneous wash through a simpler, cheaper, more reliable and quieter structure with respect to the above-described known arrangements.
  • a dishwasher conventionally includes an upper sprinkler US and a lower sprinkler LS, that receive water through respective delivery ducts UD, LD.
  • a collecting sump S On the bottom of the tank there is arranged a collecting sump S, a suction duct SD branching out from the bottom of the latter and leading to the wash pump P, that is provided with two deliveries D1, D2 in which the valves controlling the supply to the two sprinklers are arranged.
  • the novel aspect of the present dishwasher is the presence of a two-position slide valve SV with a single inlet and two outlets in one of the deliveries (D1 in the illustrated example), as well as the presence of a substantially Y-shaped connector C. More specifically, a first outlet of said slide valve SV is directly connected to one of the delivery ducts (LD in the illustrated example), whereas the second outlet is connected through said connector C to the other delivery duct (UD in the illustrated example).
  • the flow through the other delivery D2 can be controlled by a conventional flap valve FV, that however does not need to be repeatedly switched because it will normally be closed during the alternate operation that is achieved by switching the slide valve SV (figs. 1, 2).
  • the opening of the flap valve FV is required only for the simultaneous wash (fig.3), thus preventing the above-mentioned problems of synchronization and dispensing with expensive and unreliable motor-driven valves.
  • the second embodiment illustrated in figures 4 to 6 shows how it can be possible to dispense with also this residual shut-off valve by arranging a second two-position slide valve SV' with two inlets and a single outlet at the bifurcation of a similar connector C'. More specifically, a first inlet receives water coming from the first slide valve SV and a second inlet receives water coming from the second delivery D2, while the outlet is connected to the upper delivery duct UD.
  • this second slide valve SV' acts as a shut-off valve when it keeps closed the inlet to which delivery D2 is connected.
  • this second slide valve SV' does not need to be repeatedly switched because it will normally be inoperative during the alternate wash, that is achieved by switching the first slide valve SV (figs.4, 5).
  • the activation of the second slide valve SV' is required only for the simultaneous wash (fig.6).

Landscapes

  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Washing And Drying Of Tableware (AREA)
EP06425044A 2006-01-30 2006-01-30 Geschirrspülmaschine mit verbessertem hydraulischen Kreis Withdrawn EP1813182A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06425044A EP1813182A1 (de) 2006-01-30 2006-01-30 Geschirrspülmaschine mit verbessertem hydraulischen Kreis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06425044A EP1813182A1 (de) 2006-01-30 2006-01-30 Geschirrspülmaschine mit verbessertem hydraulischen Kreis

Publications (1)

Publication Number Publication Date
EP1813182A1 true EP1813182A1 (de) 2007-08-01

Family

ID=36659949

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06425044A Withdrawn EP1813182A1 (de) 2006-01-30 2006-01-30 Geschirrspülmaschine mit verbessertem hydraulischen Kreis

Country Status (1)

Country Link
EP (1) EP1813182A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20120165A1 (it) * 2012-02-24 2013-08-25 Premark Feg Llc Pompa a doppia mandata e macchina lavastoviglie provvista di tale pompa
CN112160079A (zh) * 2020-09-28 2021-01-01 黄毛牙 一种智能制造的缝纫机自动检测调节装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0795292A2 (de) * 1996-02-09 1997-09-17 CANDY S.p.A. Geschirrspüler mit drehbarem Sprüharm mit selektiv gespeisten Sprühdüsen und Verfahren
EP0943282A2 (de) * 1998-03-20 1999-09-22 AEG Hausgeräte GmbH Geschirrspülmaschine
WO2000022973A1 (en) * 1998-10-16 2000-04-27 Arçelik A.Ş. Dishwashing machine with independently controlled washing racks
EP1502535A2 (de) * 2003-07-31 2005-02-02 LG Electronics Inc. Durchflussregelvorrichtung einer Geschirrspülmaschine
EP1586265A1 (de) * 2004-01-29 2005-10-19 Bonferraro S.p.A. Geschirrspülmaschine mit verbessertem hydraulischen Kreis

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0795292A2 (de) * 1996-02-09 1997-09-17 CANDY S.p.A. Geschirrspüler mit drehbarem Sprüharm mit selektiv gespeisten Sprühdüsen und Verfahren
EP0943282A2 (de) * 1998-03-20 1999-09-22 AEG Hausgeräte GmbH Geschirrspülmaschine
WO2000022973A1 (en) * 1998-10-16 2000-04-27 Arçelik A.Ş. Dishwashing machine with independently controlled washing racks
EP1502535A2 (de) * 2003-07-31 2005-02-02 LG Electronics Inc. Durchflussregelvorrichtung einer Geschirrspülmaschine
EP1586265A1 (de) * 2004-01-29 2005-10-19 Bonferraro S.p.A. Geschirrspülmaschine mit verbessertem hydraulischen Kreis

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20120165A1 (it) * 2012-02-24 2013-08-25 Premark Feg Llc Pompa a doppia mandata e macchina lavastoviglie provvista di tale pompa
WO2013126481A1 (en) * 2012-02-24 2013-08-29 Premark Feg L.L.C. Double delivery pump and washing machine provided thereof
CN112160079A (zh) * 2020-09-28 2021-01-01 黄毛牙 一种智能制造的缝纫机自动检测调节装置

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