EP0779056A2 - Zufuhr von Spülflüssigkeit und Dosiervorrichtung in einer Geschirrspülmaschine - Google Patents

Zufuhr von Spülflüssigkeit und Dosiervorrichtung in einer Geschirrspülmaschine Download PDF

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Publication number
EP0779056A2
EP0779056A2 EP96119800A EP96119800A EP0779056A2 EP 0779056 A2 EP0779056 A2 EP 0779056A2 EP 96119800 A EP96119800 A EP 96119800A EP 96119800 A EP96119800 A EP 96119800A EP 0779056 A2 EP0779056 A2 EP 0779056A2
Authority
EP
European Patent Office
Prior art keywords
washing
water
compartments
tub
compartment
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Withdrawn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
EP96119800A
Other languages
English (en)
French (fr)
Other versions
EP0779056A3 (de
Inventor
Carlo Frairia
Marcello Premoli
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.)
Tecnoplastica Prealpina SpA
Original Assignee
Tecnoplastica Prealpina 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 Tecnoplastica Prealpina SpA filed Critical Tecnoplastica Prealpina SpA
Publication of EP0779056A2 publication Critical patent/EP0779056A2/de
Publication of EP0779056A3 publication Critical patent/EP0779056A3/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Withdrawn legal-status Critical Current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
    • A47L15/4229—Water softening arrangements

Definitions

  • Water dosing to execute washing can take place in several ways.
  • the simplest solution is to foresee a timed opening of a solenoid valve to supply the water in the washing-tub, however, this solution may prove highly inaccurate since it does not take into account the likely pressure and flowrate changes always occurring in the water supply net.
  • AD indicates a third pipe to feed the softened water from the above decalcifier device to the container 1.
  • the container 1 has two central separating elements, indicated with 4 and 5.
  • the separator 4 is a simple splash plate
  • separator 5 is a septum configured to define two semicompartments, indicated with 6 and 7, closed upward.
  • septums 4 and 5 define three semicompartments 6, 7, 8, with the semi-compartment 8 fully open upward, whereas semicompartments 6 and 7 only communicate with the outside in their upper section through breather pipes TT, whose function will be explained in the following.
  • the upper section of the compartment V2 has two seats S1 and S2 with their relevant lower holes, indicated with S1A and S2A.
  • Said seats S1 and S2 house their relevant floats G1 and G2, whose execution is known as such, suitable to trip the relevant microswitches MC1 and MC20 controlling a water input solenoid valve (EVC), as it will result later in this description.
  • EMC water input solenoid valve
  • a hole FS communicating with the inside of the washing-tub is provided, to exhaust any vapours generated in the latter during washing.
  • a third outlet indicated with 11 is provided on the compartment bottom V2.
  • the container structure 1 is conveniently made of plastic material, such as for instance two molded parts subsequently welded to each other as usually known (eg. hot blade procedure).
  • the container 1 may be manufactured according to the blow-molding technique, to obtain all components (except for the floats G1 and G2 and microswitches MC1 and MC2) in one single operation.
  • the above mentioned decalcifier device is indicated as a whole with DD. Both the type and operation of this device are known, so that a detailed description will not be required. For the purpose of this invention it will be enough to point out that it consists of a container CR for the water softening resins and of a tank SS for the resin regeneration salt.
  • a pipe indicated with 12 connects the pipe AR of the container 1 with an inlet to the resin container CR.
  • a pipe indicated with 13 connects an output of the resin container CR with the pipe AD of the container 1.
  • a branching off pipe 14 from the pipe 13 communicates with the tub FV (through a pipe 15) and is equipped with a solenoid valve EVV.
  • a pipe indicated with 16 connects the outlet 10 with an inlet of salt container SS.
  • a solenoid valve EVR is located between the outlet 10 and the pipe 16.
  • FIG. 3 shows by way of example a flowchart showing the development of some program steps of the dishwasher machine represented in Fig. 2, i.e.:
  • the dishwasher is provided with a programmer device or electromechanical timer.
  • a timer type comprises a small electric motor causing a cam pack to rotate when it is fed.
  • the cam profile is configured to enable/disable the electric contacts, which in their turn enable/disable several machine devices and functions.
  • both the solenoid valves EV1, EV2, EVV, EVR and the discharge pump P are not fed; the microswitch MC1 is on empty tank position.
  • the solenoid EVV is a normally closed valve type to avoid that during the input steps of the container 1 the outflowing water from the device DD may flow directly into the washing tub FV.
  • the softened water flows up along the pipe AD and falls in the compartment V1; the latter will be filled up to an overflow level determined by the height of the septum 4.
  • the water overcoming the septum 4 flows over into the compartment VR, so that the three semicompartments 6, 7, 8 will be filled.
  • the semicompartments 6 and 7 are equipped in their upper section with some small breather pipes indicated with TT to let air outflow under the thrust of the water column rising back to the same semicompartments 6 and 7 during said stage.
  • the small pipes TT can be left open or closed according to a selector position (not shown), so as to change the water volume for resin regeneration as a function of the water hardness degree from the supply net; it is clear in fact that when the small pipes TT are closed, the water will only enter the semicompartment 8.
  • the float S1 and the microswitch MC1 represent the main level sensor of the device according to the present invention.
  • the machine operates in a similar manner as described above: however, featured by the substantial difference that during the fourth step of the water supply stage the solenoid valve EV1 will not be fed and remains closed. Therefore, during this fourth step only the water volume contained in the compartment V2 will reach the washing-tub FV.
  • the machine timer controls feeding of the solenoid valve EVC and solenoid valves EV1 and EVV.
  • the machine timer controls in a timed sequence the electric feeding of the solenoid valve EVC and of the solenoid valve EV1.
  • the water from the supply net floods the resins in the container CR to washing them and flows then in the compartment V1 through the pipe 13.
  • the solenoid valve EV2 since also the solenoid valve EV2 is open, the resin washing water flows from the compartment V1 to the washing-tub FV through the pipe 15.
  • the machine discharge pump P operates, expelling the resin washing water from the machine through the pipe TS.
  • the various water input steps subsequent to the first one can take place with the machine executing different program steps, such as heating, prewash, washing, rinse steps.
  • the time sequence of the supply operations of the container 1 can be selected since the system design stage, to favorably exploit thermal dissipation of the washing-tub for a partial heat recovery.
  • supply of container 1 can take places during the hot" steps of the washing program, so that the water contained in the container 1 may be at least partially heated by the dissipated heat of the tub during such hot steps.
  • the dosing system described above comprising a dual input and output of the compartment V2 to execute both a full crockery load washing and a reduced load loading may also be a different one.
  • the container 1 can be such to have the total capacity of both compartments V1 and V2 equalling the water volume required for the washing of a full crockery load, whereas the capacity of the compartment V2 would equal the water volume required for a reduced load washing.
  • the max. water volume required for washing is a restricted one (thinking of a dishwasher with a capacity for eight standard covers) or when a wide space is available in the gap between the dishwasher washing-tub and the cabinet.
  • the supply solenoid valve EVC is not fed: in this way, there is no water supply from the supply net.

Landscapes

  • Washing And Drying Of Tableware (AREA)
EP96119800A 1995-12-11 1996-12-10 Zufuhr von Spülflüssigkeit und Dosiervorrichtung in einer Geschirrspülmaschine Withdrawn EP0779056A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT95TO000987A IT1281062B1 (it) 1995-12-11 1995-12-11 Sistema per il caricamento ed il dosaggio del liquido di lavaggio in una macchina lavastoviglie.
ITTO950987 1995-12-11

Publications (2)

Publication Number Publication Date
EP0779056A2 true EP0779056A2 (de) 1997-06-18
EP0779056A3 EP0779056A3 (de) 1999-03-24

Family

ID=11414015

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96119800A Withdrawn EP0779056A3 (de) 1995-12-11 1996-12-10 Zufuhr von Spülflüssigkeit und Dosiervorrichtung in einer Geschirrspülmaschine

Country Status (3)

Country Link
EP (1) EP0779056A3 (de)
IT (1) IT1281062B1 (de)
TR (1) TR199600991A2 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0861630A2 (de) * 1997-02-18 1998-09-02 T & P S.p.A. Waschmaschine mit Zufuhr- und Dosiervorrichtung der Flüssigkeit und zugehöriges Dosierverfahren
WO2011057513A1 (zh) * 2009-11-13 2011-05-19 浙江磐玉家电应用控制有限公司 洗碗机呼吸器组件
EP2366322A3 (de) * 2010-03-18 2011-10-12 Electrolux Home Products Corporation N.V. Verfahren zum Regenerieren eines Wasserenthärtungsharzes in einer Geschirrspülmaschine
US9839945B2 (en) 2014-05-02 2017-12-12 Electrolux Home Products, Inc. Methods, systems, and apparatuses for performing a quick cycle in a dishwasher
US9936852B2 (en) 2010-03-18 2018-04-10 Electrolux Home Products Corporation N.V. Method for filling a wash tub of a dishwasher with water
CN108478138A (zh) * 2018-04-28 2018-09-04 佛山市顺德区海伦宝电器有限公司 一种洗碗机呼吸器的双水路结构

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2716252C2 (de) * 1977-04-13 1983-04-07 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Geschirrspül- oder Waschmaschine mit einer Einrichtung zum Abgeben einer in einem Sammelbehälter abgemessenen Wassermenge
DE2739145A1 (de) * 1977-08-31 1979-03-15 Hobart Corp Geraet zum wasserenthaerten fuer geschirrspuelmaschinen
DE3631687A1 (de) * 1986-09-18 1988-03-24 Licentia Gmbh Dosiergeraet fuer fluessigkeiten
IT1269843B (it) * 1994-05-27 1997-04-15 Candy Spa Dispositivo di controllo per il carico di volumi differenziati di liquido di lavaggio in una lavastoviglie

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0861630A2 (de) * 1997-02-18 1998-09-02 T & P S.p.A. Waschmaschine mit Zufuhr- und Dosiervorrichtung der Flüssigkeit und zugehöriges Dosierverfahren
EP0861630A3 (de) * 1997-02-18 1998-12-09 T & P S.p.A. Waschmaschine mit Zufuhr- und Dosiervorrichtung der Flüssigkeit und zugehöriges Dosierverfahren
WO2011057513A1 (zh) * 2009-11-13 2011-05-19 浙江磐玉家电应用控制有限公司 洗碗机呼吸器组件
EP2366322A3 (de) * 2010-03-18 2011-10-12 Electrolux Home Products Corporation N.V. Verfahren zum Regenerieren eines Wasserenthärtungsharzes in einer Geschirrspülmaschine
US9936852B2 (en) 2010-03-18 2018-04-10 Electrolux Home Products Corporation N.V. Method for filling a wash tub of a dishwasher with water
US9839945B2 (en) 2014-05-02 2017-12-12 Electrolux Home Products, Inc. Methods, systems, and apparatuses for performing a quick cycle in a dishwasher
CN108478138A (zh) * 2018-04-28 2018-09-04 佛山市顺德区海伦宝电器有限公司 一种洗碗机呼吸器的双水路结构

Also Published As

Publication number Publication date
IT1281062B1 (it) 1998-02-11
ITTO950987A0 (de) 1995-12-11
ITTO950987A1 (it) 1997-06-11
TR199600991A2 (tr) 1997-06-21
EP0779056A3 (de) 1999-03-24

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