EP1177758B1 - Wasserheizungsvorrichtung für Geschirrspülmaschine - Google Patents

Wasserheizungsvorrichtung für Geschirrspülmaschine Download PDF

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Publication number
EP1177758B1
EP1177758B1 EP01202806A EP01202806A EP1177758B1 EP 1177758 B1 EP1177758 B1 EP 1177758B1 EP 01202806 A EP01202806 A EP 01202806A EP 01202806 A EP01202806 A EP 01202806A EP 1177758 B1 EP1177758 B1 EP 1177758B1
Authority
EP
European Patent Office
Prior art keywords
heating element
tray
washing water
filter
water
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
EP01202806A
Other languages
English (en)
French (fr)
Other versions
EP1177758A2 (de
EP1177758A3 (de
Inventor
Silvano Fumagalli
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.)
Candy SpA
Original Assignee
Candy 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 Candy SpA filed Critical Candy SpA
Publication of EP1177758A2 publication Critical patent/EP1177758A2/de
Publication of EP1177758A3 publication Critical patent/EP1177758A3/de
Application granted granted Critical
Publication of EP1177758B1 publication Critical patent/EP1177758B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A47L15/4285—Water-heater arrangements

Definitions

  • the present invention refers to a unit for heating water in a dishwasher machine.
  • Dishwashers currently in use are generally provided with devices for heating the washing water (see e.g. US 5 755 244 A, DE 1 984 4898 A).
  • such heating devices comprise armored electric resistors that are positioned inside the washing tank and in particular on the bottom of the same, in order to be invested by the flow of the washing water before the same flows toward a collection tray arranged in the bottom zone of the washing tank; in this way such resistors can exert a better air or water heating function.
  • Such heaters are activated both in the washing stage of the dishes as well as in the drying stage of the same.
  • resistors capture dirty particles that by desiccating cause unpleasant odours and in addition, since they are arranged completely at sight, they can cause scorches to the users because of the residual temperature existing once the washing or drying stages of the dishes is completed.
  • the electric resistor which is usually of tubular type, can be affected by the surface attack of the calcareous substances thus presenting, after several washing stages, overheating problems in some parts that can lead to electric interruptions on the same resistor and therefore to a fast substitution.
  • scope of the present invention is to provide a dishwasher machine which solves at least partially some of the aforesaid disadvantages.
  • the present invention it is possible to provide a unit for heating water in a dishwasher machine in which the heating element is arranged in a position not at sight and that does not interfere with the flow of the washing water but so that the washing water laps the heating element in order to obtain the maximum heating efficiency.
  • the heating element is arranged in such a way so as to make the access and the handling easy in case of repair or of substitution of the same .
  • Figure 1 is a schematic view of the heater according to the present invention.
  • Said unit 1 is arranged under the bottom 2 of a washing tank of the dishwasher and it comprises a filtering wall 3 arranged on the bottom part of washing tank and supported on borders of its tank bottom.
  • Such filtering wall 3 has a hole 4 on its bottom part on the edge of which the upper ends of an cylindrical filter 5 open on top rest.
  • Said filter 5 rests with its bottom on a tube 6 which is arranged horizontally and has a perpendicular end 7 inside the filter 5; in the tube 6 clean water that serves to clean the filter 5 flows.
  • the filter 5 and the tube 6 are arranged inside a tray 8 suitable to collect the filtered washing water; the tube 6 is integral with a side wall 9 of the tray 8.
  • the latter communicates with a discharge pump 10 and with a duct 11 that takes the water to a recycle pump 12.
  • Both the discharge pump 10 as well as the duct 11 are connected with opposite side walls of the tray 8 which is connected on top with the tank bottom 2 of the washing tank of the dishwasher.
  • a flat heating element 13 is arranged, which is made up of a support with a plate resistor inserted between silicone packings, and closed on the bottom by a flange 14.
  • Such position of the heating element 13 allows the heating of the washing water when it flows towards the duct 11 that leads to the recycle pump 12, since great part of the washing water is forced to pass through a zone 15 where the washing water laps the heating element 13 and it gets heated.
  • the position of the heating element 13 does not hinder the flow of the washing water towards the recycle pump 12 in any way; in addition, since the element 13 must heat the already filtered washing water, the possibility of the presence of unpleasant odours in the dishwasher due to the heating of debris by means of contact with the heating element diminishes.
  • the positioning of the heating element 13 at a depth h with respect to the bottom part of a communication duct 20 between the tray 8 and the discharge pump 10, always guarantees the presence of a certain amount of water, even if minimum, on the bottom of the tray 8 and therefore in contact with the heating element 13. This prevents the latter both from reaching high temperatures as well as from the adhesion of dry debris on its surface.
  • the heating element 13 is also easily reachable by means of the single opening of the flange 14 that facilitates the repair or substitution operations of the element 13.
  • the position of the heating element 13 not at sight prevents possible scorches of the user.
  • the heating element 13 can for instance be made up of an insulated steel plate with a resistance applied according to the known thick film technology.

Landscapes

  • Washing And Drying Of Tableware (AREA)

Claims (3)

  1. Geschirrspülmaschine mit einem ersten Filter (3), das am Boden eines Waschkastens (2) der Geschirrspülmaschine angeordnet ist, um das im Kasten (2) enthaltene Waschwasser zu sammeln und zu filtern, einem Behälter (8) zum Sammeln des gefilterten Waschwassers, einem Ansaugrohr (11), das das Waschwasser in Richtung zu einer Umlaufpumpe (12) nimmt, einem flachen Heizelement (13), das in einem Weg benachbart zum Boden des Behälters (8) angeordnet ist, um den Durchfluss des gefilterten Waschwassers in Richtung zum Ansaugrohr (11) nicht zu behindern, dadurch gekennzeichnet, dass sie folgendes aufweist: ein zweites Filter (5), das innerhalb des Behälters (8) angeordnet ist und das durch eine rohrförmige Einrichtung (6) gestützt wird, in welcher das saubere Wasser fließt, das zum Reinigen des zweiten Filters (5) dient, wobei das flache Heizelement (13) unter dem zweiten Filter (5) angeordnet ist.
  2. Geschirrspülmaschine nach Anspruch 1, dadurch gekennzeichnet, dass das flache Heizelement (13) einen elektrischen Widerstand aufweist.
  3. Geschirrspülmaschine nach Anspruch 1, dadurch gekennzeichnet, dass das Heizelement (13) bei einer bestimmten Tiefe (h) in Bezug auf eine Durchführung (20) für die Kommunikation zwischen dem Behälter (8) und einer Entladepumpe (10) des Waschwassers angeordnet ist, um immer das Vorhandensein einer bestimmten Menge von Wasser am Boden des Behälters (8) zu garantieren, und daher in Kontakt mit dem Heizelement (13).
EP01202806A 2000-07-31 2001-07-23 Wasserheizungsvorrichtung für Geschirrspülmaschine Expired - Lifetime EP1177758B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT2000MI001769A IT1318290B1 (it) 2000-07-31 2000-07-31 Apparato per il riscaldamento di acqua in una macchina lavastoviglie.
ITMI201769 2000-07-31
ITMI20001769 2000-07-31

Publications (3)

Publication Number Publication Date
EP1177758A2 EP1177758A2 (de) 2002-02-06
EP1177758A3 EP1177758A3 (de) 2002-10-30
EP1177758B1 true EP1177758B1 (de) 2004-10-20

Family

ID=11445623

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01202806A Expired - Lifetime EP1177758B1 (de) 2000-07-31 2001-07-23 Wasserheizungsvorrichtung für Geschirrspülmaschine

Country Status (4)

Country Link
EP (1) EP1177758B1 (de)
DE (1) DE60106532T2 (de)
ES (1) ES2228744T3 (de)
IT (1) IT1318290B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1731080A1 (de) * 2005-05-26 2006-12-13 Bonferraro S.p.A. Wasserheizeinrichtung, insbesondere für Geschirrspülmaschinen
DE102005043030A1 (de) 2005-09-09 2007-03-15 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1003113B (it) * 1973-07-27 1976-06-10 Iret Ind Spa Dispositivo di sicurezza per la protezione di macchine per il lavaggio di biancheria o di stoviglie
DE2408573A1 (de) * 1974-02-22 1975-09-04 Euro Hausgeraete Gmbh Geschirrspuelmaschine
DE2413790A1 (de) * 1974-03-22 1975-10-02 Euro Hausgeraete Gmbh Geschirrspuelmaschine
DE3237825A1 (de) * 1982-10-12 1984-04-12 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Elektrische heizung fuer geschirrspuelmaschinen
DE4135540A1 (de) * 1991-10-28 1993-04-29 Bosch Siemens Hausgeraete Trommelwasch- oder geschirrspuelmaschine mit einem laugenbehaelter
EP1674028B1 (de) * 1991-12-20 2011-05-04 Fisher & Paykel Appliances Ltd. Geschirrspülmaschine mit einer Dickschicht-Heizplatte
JPH06133914A (ja) * 1992-10-30 1994-05-17 Toshiba Corp 食器洗い乾燥器
IT1294981B1 (it) * 1996-05-10 1999-04-27 I R C A Spa Ind Resistenze Cor Procedimento per riscaldare l'acqua e l'aria in un ciclo di lavaggio particolarmente per lavastoviglie e resistenza per effettuare il
IT1297492B1 (it) * 1997-10-01 1999-12-17 I R C A Spa Ind Resistenze Cor Elemento scaldante per apparecchi elettrodomestici.
DE19844898A1 (de) * 1998-09-30 2000-04-06 Aweco Appliance Sys Gmbh & Co Heizvorrichtung für Haushaltsmaschinen, insbesondere Geschirrspülmaschinen

Also Published As

Publication number Publication date
IT1318290B1 (it) 2003-07-28
EP1177758A2 (de) 2002-02-06
ITMI20001769A0 (it) 2000-07-31
EP1177758A3 (de) 2002-10-30
ES2228744T3 (es) 2005-04-16
ITMI20001769A1 (it) 2002-01-31
DE60106532T2 (de) 2005-10-27
DE60106532D1 (de) 2004-11-25

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