EP1145680B1 - Vorrichtung gegen Druckschwankungen in dem Laugenbehälter einer Geschirrspülmaschine - Google Patents

Vorrichtung gegen Druckschwankungen in dem Laugenbehälter einer Geschirrspülmaschine Download PDF

Info

Publication number
EP1145680B1
EP1145680B1 EP20010400716 EP01400716A EP1145680B1 EP 1145680 B1 EP1145680 B1 EP 1145680B1 EP 20010400716 EP20010400716 EP 20010400716 EP 01400716 A EP01400716 A EP 01400716A EP 1145680 B1 EP1145680 B1 EP 1145680B1
Authority
EP
European Patent Office
Prior art keywords
chamber
opening
valve
closing means
openings
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
EP20010400716
Other languages
English (en)
French (fr)
Other versions
EP1145680A1 (de
Inventor
Philippe Bonnet
Philippe Breger
Jean Jonchier
Jean-Paul Mauras
Daniel Remeur
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.)
Brandt Industries SAS
Original Assignee
Esswein SA
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 Esswein SA filed Critical Esswein SA
Publication of EP1145680A1 publication Critical patent/EP1145680A1/de
Application granted granted Critical
Publication of EP1145680B1 publication Critical patent/EP1145680B1/de
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
    • A47L15/4251—Details of the casing

Definitions

  • the invention relates to a device for countering the effects of pressure variations in a dishwasher tank.
  • the supply of air at room temperature in the hot enclosure of the tank can cause an overpressure of the tank of the dishwasher. This is the case for example during the momentary opening by a user of the dishwasher door during a cycle of operation corresponding to a heating cycle. Overpressure can cause a malfunction of the device, such as for example unwanted door opening, overflowing water and sometimes even the ensuing anti-overflow security.
  • the supply of cold water to a hot enclosure at the time of rinsing for example, causes a depression of the tank which can cause a deformation of it.
  • venting To counter the effects of pressure variations, most devices today are equipped with a vent to the tank, usually formed by a simple pipe connecting the inside and outside of the tank and allowing air circulation in case of overpressure or depression.
  • a dishwasher equipped with a vent of the tank is described in the document US 3,023,757.
  • the disadvantage of this venting is that it lets the water vapor, especially during heating cycles. When the bet air flows out of the dishwasher, the steam, condensing on walls or adjacent furniture, may cause deterioration.
  • the venting opens into the space between the tank and a dishwasher cover sheets, and water vapor, condensing, risk of damaging the parts located in this space, such as the felt-tip pens insulation for example.
  • a solution then consists in closing the hole opening at the outlet. airing by a foam which lets air pass but which is waterproof with steam. However, in use, the foams become clogged and, if they are too fine, may saturate with water vapor, thus forming a plug which does not allow enough air to pass through.
  • Another solution consists of closing the through hole with a shutter, free to rotate around of a horizontal axis. But it’s never vapor tight, even during normal dishwasher operation.
  • a third solution effective but expensive, consists in setting up a circuit of condensation with condensate collector and evaporator.
  • the device according to the invention offers a simple and economical to counter the effects of overpressure and depression of the tank of a dishwasher, while maintaining a good seal against water vapor during the normal operating cycle.
  • the invention proposes a device comprising a venting with two openings, closed by separate closing means.
  • the invention relates to a device for countering pressure variations in a dishwasher tank, characterized in that it includes a venting of the tank with two openings of exit, first means for closing the first of said openings, substantially vapor-tight, opening only towards the outside of the tank to let out air in the event of overpressure, and second means for closing the second of said openings, appreciably impervious to water vapor, opening only towards the inside of the tank to let in air in case of depression.
  • the second outlet opening is made in the first closing means, said first means supporting the second closing means, thus making it possible to reduce the bulk of the vent.
  • FIG. 1 shows an embodiment of the device according to the invention.
  • the device comprises a venting of the tank with two outlet openings.
  • First means of closure close the first of said openings and open only to the outside from the tank, to let out air in the event of overpressure.
  • Seconds closing means close the second of said openings and do not open towards the inside of the tank to let in air in case of depression.
  • the first and second closing means separate from one of the other and substantially waterproof against water vapor when closed, give the device its tightness during normal operation of the dishwasher.
  • the venting of the tank is ensured by one or two piece (s) outside the tank, with a through hole on the tank and at least one hole emerging at the outlet to form at least one of the two openings.
  • the openings are made directly in the tank, the water pressure during the washing or rinsing cycles may cause water leakage.
  • a solution preferential consists in using only a part external to the tank for perform the venting, as is the case for example in Figure 1.
  • FIG. 1 constitutes an exemplary embodiment of the device according to the invention which makes it possible to limit its size, which is a constant concern in the field of household appliances.
  • the Figure 1 device comprises an outer part 1. This is for example a part integrated in the dishwasher distributor, generally located in the free space between the tank and one of the dishwasher cover sheets. The distributor is used to regulate the amount of regenerating salt in rinse water. Neither the tank nor the hole leading to the tank are shown here.
  • the external part 1 in this example comprises only one hole 2 opening at the outlet.
  • the device shown in Figure 1 includes in addition to an intermediate part 3, in which an opening 4 is pierced forming the first of said openings, a valve 5 forming the first means for closing said first opening, an opening 6 pierced in the valve 5 and forming said second opening, a valve 7 forming the second means for closing said second opening.
  • Intermediate piece 3 serves as an adaptation piece on hole 2 opening at the outlet, which can be a pre-existing hole in a part designed to other purposes, as is the case for the dispatcher.
  • the intermediate piece has in this example another function which is that of support for the valve 5 forming the first closing means.
  • the part 3 forming a support is pierced with the opening 4 forming the first opening, and whose dimensions are smaller than those of the valve 5. In closed position, the valve 5 is therefore in contact with the part 3, which gives a good seal against water vapor.
  • the valve 5 is articulated in rotation on the part. support 3, around an axis 51, so that it can only open towards the outside of the tank in the event of overpressure (direction symbolized by arrow A in figure 1), i.e. towards the free space where the air is under pressure room. On the contrary, in the event of depression, it is pressed against the part support 3.
  • the articulation is for example ensured by a hinge free, ie with little friction, and the support part 3 is substantially vertical.
  • the valve 5 is made of a material of low density, for example a plastic material of the polypropylene type. So at the less overpressure in the tank, the valve 5, light, is already raised.
  • a system of springs for example, can be considered to recall the valve in its position of contact with the support, in particular in the case where the support would not be vertical.
  • the stiffness of the spring is then determined as a function overpressures in play in the dishwasher. But this solution turns out much more complex.
  • Any type of valve can be considered at the place of the valve, but again, the solutions may be more complicated to implement.
  • the second outlet opening is carried out in the first means for closing the first opening, that is to say in the form of an opening 6 in the valve 5 itself.
  • the valve 5 then constitutes a support for the second closing means, formed in this example of a second valve 7, smaller than the first valve 5, and whose dimensions are slightly larger than those of the opening 6 in order to ensure good contact with the first valve 5 forming the support of the second valve 7.
  • the valve 7 is impermeable to water vapor relative to the valve 5 forming a support.
  • the second valve 7 is also movable in rotation on its support formed by the valve 5, around an axis 71, the joint also being formed of a free hinge. But this time, the valve 7 can only open towards the inside of the tank, the direction being symbolized by arrow B in Figure 1, i.e. in the opposite direction to that of the valve 5.
  • the valve 7 opens, which allows let the air from the free space inside the tank and prepare for the depression.
  • the valve 7 is pressed against the valve 5 which constitutes its support, and valve 5, on the other hand, is lifted from the support piece 3.
  • the first closing means (valve 5) which support the second closing means (valve 7).
  • the overpressure effects are generally of greater amplitude and it is preferable that it is the first outlet opening, which makes it possible to counter the overpressure, which is of larger dimensions than the second outlet opening, making it possible to ward off depression.
  • openings (4, 6) with the largest possible surface. Indeed, as the valves are light, they can be lifted as soon as there is a small variation in pressure and the large surface allows to deal with large variations in pressure.
  • these openings must be sized according to the orders of magnitude of the expected pressure variations. Thus, it is not necessary for these surfaces to exceed 15 to 20 cm 2 since the pressure variations in the dishwashers remain moderate.
  • the opening 4 is approximately 6 cm 2 and the opening 6 is approximately 3 cm 2 .

Landscapes

  • Washing And Drying Of Tableware (AREA)

Claims (9)

  1. Vorrichtung zur Vorbeugung von Druckschwankungen in einer Wanne einer Geschirrspülmaschine, dadurch gekennzeichnet, daß sie eine Belüftung der Wanne mit zwei Ausgangsöffnungen (4, 6) aufweist, erste Mittel (5) zum Verschließen der ersten der Öffnungen (4), die im wesentlichen gegenüber dem Wasserdampf dicht sind und sich nur nach außerhalb der Wanne öffnen, um im Falle eines Überdrucks Luft austreten zu lassen, und zweite Mittel (7) zum Verschließen der zweiten der Öffnungen (6), die im wesentlichen gegenüber dem Wasserdampf dicht sind und sich nur nach innerhalb der Wanne öffnen, um im Falle eines Unterdrucks Luft eintreten zu lassen.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die zweite Ausgangsöffnung (6) in den ersten Verschlußmitteln (5) gemacht ist, wobei die ersten Mittel die zweiten Verschlußmittel (7) stützen.
  3. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die ersten und die zweiten Verschlußmittel jeweils aus einem in Drehung um eine Achse (51, 71) angelenkten Ventil gebildet sind, das sich nur nach außerhalb bzw. nach innerhalb der Wanne öffnen kann.
  4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß jedes Ventil an einem Träger angebracht ist, der mit der entsprechenden Öffnung durchsetzt ist, wobei die Abmessungen des Ventils im wesentlichen über denjenigen der Öffnung liegen, um den Kontakt und die Dichtigkeit gegenüber dem Wasserdampf zu gewährleisen.
  5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Träger im wesentlichen vertikal sind, und daß jedes der Gelenke durch ein freies Scharnier gewährleistet ist, das an jedem der Träger angebracht ist, wobei das Gewicht jedes der Ventil dann ausreicht, um das Verschließen jeder der Öffnungen zu gewährleisten.
  6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die Ventile aus Kunststoff mit niedriger Dichte vom Typ Polypropylen hergestellt sind.
  7. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß sie wenigstens ein Teil (1) außerhalb der Wanne zur Bildung der Belüftung aufweist, wobei das Teil ein Loch, das an der Wanne mündet, und wenigstens ein Loch aufweist, das am Ausgang (2) mündet, um wenigstens eine der Öffnungen zu bilden.
  8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß sie ein einziges äußeres Teil aufweist, daß das Teil nur ein einziges Loch aufweist, das am Ausgang mündet, und daß die Vorrichtung ein Zwischenteil (3) aufweist, das an das am Ausgang mündende Loch angepaßt ist, wobei es einen Träger bildet, der mit der ersten Öffnung durchsetzt ist, die von den ersten Verschlußmitteln verschlossen wird, wobei die Mittel einen Träger bilden, der mit der zweiten Öffnung durchsetzt ist, die von den zweiten Verschlußmitteln verschlossen wird.
  9. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß die Geschirrspülmaschine einen Verteiler aufweist, der zwischen der Wanne und einem der Verkleidungsbleche positioniert ist, wobei das äußere Teil in den Verteiler integriert ist.
EP20010400716 2000-03-21 2001-03-20 Vorrichtung gegen Druckschwankungen in dem Laugenbehälter einer Geschirrspülmaschine Expired - Lifetime EP1145680B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0003600A FR2806608B1 (fr) 2000-03-21 2000-03-21 Dispositif pour parer aux effets de variations de pression dans une cuve de lave-vaisselle
FR0003600 2000-03-21

Publications (2)

Publication Number Publication Date
EP1145680A1 EP1145680A1 (de) 2001-10-17
EP1145680B1 true EP1145680B1 (de) 2004-06-02

Family

ID=8848337

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010400716 Expired - Lifetime EP1145680B1 (de) 2000-03-21 2001-03-20 Vorrichtung gegen Druckschwankungen in dem Laugenbehälter einer Geschirrspülmaschine

Country Status (4)

Country Link
EP (1) EP1145680B1 (de)
DE (1) DE60103586T2 (de)
ES (1) ES2220684T3 (de)
FR (1) FR2806608B1 (de)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3023757A (en) * 1960-05-06 1962-03-06 Westinghouse Electric Corp Dishwashing apparatus
US3387388A (en) * 1965-12-17 1968-06-11 Westinghouse Electric Corp Single vent system for dishwasher
CH472208A (de) * 1967-09-01 1969-05-15 Bosch Hausgeraete Gmbh Geschirrspülmaschine mit Entlüftungsöffnung
SE346689B (de) * 1970-10-28 1972-07-17 Electrolux Ab

Also Published As

Publication number Publication date
DE60103586T2 (de) 2005-07-07
FR2806608B1 (fr) 2002-06-28
FR2806608A1 (fr) 2001-09-28
DE60103586D1 (de) 2004-07-08
EP1145680A1 (de) 2001-10-17
ES2220684T3 (es) 2004-12-16

Similar Documents

Publication Publication Date Title
EP3028957B1 (de) Umkehrbarer deckel und behälter, der eine lebensmitteldose mit variablem volumen bildet
EP2805649B1 (de) Kochtopf, der ein dichtes Steuermodul umfasst
EP0461959B1 (de) Elektrisches Bügeleisen mit Verbesserungen bezüglich Entkalkungspatrone und Wassertank
EP1966430B1 (de) Bügeleisen mit einem durch ein thermisch verformbares element geregelten ventil
EP0693893B1 (de) Gargerät, beispielsweise friteuse
EP2805650B1 (de) Kochtopf, der ein dichtes Gehäuse umfasst
WO1997049320A1 (fr) Dispositif de condensation de vapeurs de cuisson et appareil de cuisson comportant un tel dispositif
FR3097733A1 (fr) Appareil de cuisson électrique pourvu d’un dispositif de chauffage démontable.
EP1552776B1 (de) Dampfdruckkochtopf mit Überdruckventil aus einem Elastomer
EP0872201B1 (de) Elektrisch beheiztes Wassererhitzungsgerät
CA2408204C (fr) Appareil de cuisson a cuve comportant un dispositif de vidange securise
FR3100699A1 (fr) Appareil de cuisson
EP1145680B1 (de) Vorrichtung gegen Druckschwankungen in dem Laugenbehälter einer Geschirrspülmaschine
EP3088599A1 (de) Elektrohaushaltsgerät zum bügeln, das einen dampferzeuger umfasst, der mit einer entleerungsöffnung ausgestattet ist
EP0451066B1 (de) Dampferzeuger für Gargeräte mit Entwässerungseinrichtung
FR2872524A1 (fr) Appareil de repassage comportant un fer a repasser et une base portative munie d'un volet de protection
FR3072263A1 (fr) Appareil electrique de cuisson comportant un support de vidange avec couvercle
EP0188957A1 (de) Kunststoffdüse für Druckbehälter
FR2714279A1 (fr) Cafetière électrique.
FR2748383A3 (fr) Recipient de cuisson a parois sous vide
FR2791036A1 (fr) Recipient pour aliments
BE495827A (de)
WO2003032794A1 (fr) Appareil de cuisson a cuve comportant un dispositif de vidange a securite thermique
FR1461609A (fr) Perfectionnements aux dispositifs pour le vidage, le lavage et le séchage de la vaisselle
FR2556576A1 (fr) Hublot pour appareil menager de cuisson avec dispositif anti-buee

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: A1

Designated state(s): DE ES FR GB IT

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20020411

AKX Designation fees paid

Free format text: DE FR GB IT

RBV Designated contracting states (corrected)

Designated state(s): DE ES FR GB IT

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

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

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: BRANDT INDUSTRIES

REF Corresponds to:

Ref document number: 60103586

Country of ref document: DE

Date of ref document: 20040708

Kind code of ref document: P

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20040817

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2220684

Country of ref document: ES

Kind code of ref document: T3

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

Effective date: 20050303

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

Ref country code: DE

Payment date: 20090414

Year of fee payment: 9

Ref country code: IT

Payment date: 20090331

Year of fee payment: 9

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

Ref country code: GB

Payment date: 20090417

Year of fee payment: 9

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20100320

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: 20101001

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: 20100320

Ref country code: GB

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

Effective date: 20100320

REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

Owner name: FAGORBRANDT SAS, FR

Effective date: 20110826

REG Reference to a national code

Ref country code: ES

Ref legal event code: PC2A

Owner name: FAGORBRANDT SAS

Effective date: 20111021

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

Ref country code: ES

Payment date: 20150327

Year of fee payment: 15

REG Reference to a national code

Ref country code: ES

Ref legal event code: PC2A

Owner name: GROUPE BRANDT

Effective date: 20160226

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 16

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

Owner name: GROUPE BRANDT, FR

Effective date: 20160420

REG Reference to a national code

Ref country code: FR

Ref legal event code: GC

Effective date: 20160426

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 17

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20170427

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: 20160321

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 18

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

Ref country code: FR

Payment date: 20190314

Year of fee payment: 19

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: 20200331