EP0222174B1 - Household appliance using water - Google Patents

Household appliance using water Download PDF

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Publication number
EP0222174B1
EP0222174B1 EP86114058A EP86114058A EP0222174B1 EP 0222174 B1 EP0222174 B1 EP 0222174B1 EP 86114058 A EP86114058 A EP 86114058A EP 86114058 A EP86114058 A EP 86114058A EP 0222174 B1 EP0222174 B1 EP 0222174B1
Authority
EP
European Patent Office
Prior art keywords
hose
housing
water
valve
electrically switchable
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
Application number
EP86114058A
Other languages
German (de)
French (fr)
Other versions
EP0222174A2 (en
EP0222174A3 (en
Inventor
Friedhelm Horst Loch
Heinz-Jürgen Bergemann
Detlef Uszkureit
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.)
Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0222174A2 publication Critical patent/EP0222174A2/en
Publication of EP0222174A3 publication Critical patent/EP0222174A3/en
Application granted granted Critical
Publication of EP0222174B1 publication Critical patent/EP0222174B1/en
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/081—Safety arrangements for preventing water damage

Definitions

  • the invention is based on a water-carrying household appliance, such as a washing machine or dishwasher, with a process water inlet hose entering the housing in the lower region, which is connected on the inlet side to an electrically switchable valve and on its section outside to the lower region of the housing with a closed one and is surrounded at the bottom by an outer jacket hose, which is guided at a distance from it, with at least one electrically switchable valve arranged within the upper region of the housing, which is connected to the outlet end of the inlet hose and with a base trough designed to catch leak water a leakage water monitoring device is arranged.
  • a water-carrying household appliance such as a washing machine or dishwasher
  • Such a household appliance is known from DE-A-3 014 427.
  • electrically switchable valves arranged in such a household appliance in the upper region of the housing then there is the difficulty of collecting the leakage water emerging from a section of the inlet hose rising to these valves in the housing at the location of the floor pan at which the leakage water monitoring device is arranged .
  • This location of the floor pan can be, for example, a localized depression. If leakage water escapes from other places in the floor pan within the machine, it will take some time for this leakage water to collect in the recess in the floor pan.
  • Another aspect relates to the risk that leakage water with likewise high pressure escapes from the pressurized service water supply hose and hits live parts within the housing. This can be seen as a danger for the operator and for the live parts.
  • the invention has for its object to avoid the disadvantages described above.
  • this object is achieved in that the inlet hose section between the lower housing area and the upper electrically switchable valve is also surrounded by an outer jacket hose which is closed at the valve-side end and is open under the floor pan below.
  • the drawing shows a perspective, schematic view of a front-loading washing machine, the housing jacket of which is shown partially broken in the lower area and in the cover frame area. As a result, the essential parts of the subject matter of the invention arranged inside the housing are visible.
  • a faucet 1 belonging to the domestic water network is connected by means of a union nut 2 to an electrically switchable valve 3, which is firmly connected to a pressure-resistant process water supply hose 4 and to an outer jacket hose 5 which surrounds the supply hose at a distance.
  • the outer jacket hose 5 is tightly closed toward the inlet hose 4, so that no water can escape upwards at this end.
  • both hoses pass through the rear wall 6 of the housing into the interior of the washing machine.
  • the outer jacket tube 5 is cut off and open. Leakage water escaping on the covered section of the inlet hose 4 can therefore be led into the housing from the outer jacket hose 5 and emerge briefly above the floor pan 8.
  • a leakage water monitoring device 9 which, in the case of leakage water, reports this state to the control device of the washing machine (not shown) and via the electrical line 10 to the electrically switchable valve 3. The valve then immediately closes the inlet hose 4.
  • the inlet hose section 12 is also surrounded at a distance by an outer jacket hose 13, which is closed towards the inlet hose when it opens into the valve block 11.
  • the outer jacket hose 13 is open like the outer jacket hose 5 on the inlet side, but is drawn towards the latter opening to such an extent that the inlet hose 4 is encased as completely as possible. It cannot be avoided that the inlet hose 4 is exposed for a short distance between the two openings of the outer jacket hoses 5 and 13.
  • both outer jacket tubes 5 and 13 can consist of one piece. A downward leakage water outlet opening can then be provided in the outer jacket hose at the desired location above the floor pan.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Examining Or Testing Airtightness (AREA)

Description

Die Erfindung geht aus von einem wasserführenden Haushaltgerät, wie Waschmaschine oder Geschirrspülmaschine, mit einem im unteren Bereich ins Gehäuse eintretenden Brauchwasser-Zulaufschlauch, der eingangsseitig mit einem elektrisch schaltbaren Ventil verbunden und auf seinem Abschnitt außerhalb bis in den unteren Bereich des Gehäuses mit einem oben geschlossenen und unten offenen, auf Abstand zu ihm geführten Außenmantel-Schlauch umgeben ist, mit mindestens einem innerhalb des oberen Bereiches des Gehäuses angeordneten, elektrisch schaltbaren Ventil, das mit dem ausgangsseitigen Ende des Zulaufschlauchs verbunden ist und mit einer zum Auffangen von Leckwasser ausgebildeten Bodenwanne, in der eine Leckwasser-Überwachungseinrichtung angeordnet ist.The invention is based on a water-carrying household appliance, such as a washing machine or dishwasher, with a process water inlet hose entering the housing in the lower region, which is connected on the inlet side to an electrically switchable valve and on its section outside to the lower region of the housing with a closed one and is surrounded at the bottom by an outer jacket hose, which is guided at a distance from it, with at least one electrically switchable valve arranged within the upper region of the housing, which is connected to the outlet end of the inlet hose and with a base trough designed to catch leak water a leakage water monitoring device is arranged.

Ein derartiges Haushaltgerät ist aus der DE-A-3 014 427 bekannt. Sind bei einem solchen Haushaltgerät im oberen Bereich des Gehäuses elektrisch schaltbare Ventile angeordnet, dann besteht die Schwierigkeit, das aus einem zu diesen Ventilen ansteigenden Abschnitt des Zulaufschlauches austretende Leckwasser im Gehäuse an der Stelle der Bodenwanne zu sammeln, an der die Leckwasser-Überwachungseinrichtung angeordnet ist. Diese Stelle der Bodenwanne kann beispielsweise eine örtlich begrenzte Vertiefung sein. Sofern Leckwasser innerhalb der Maschine über anderen Stellen der Bodenwanne austritt, wird es einige Zeit dauern, bis dieses Leckwasser sich in der Vertiefung der Bodenwanne sammelt. Ein anderer Aspekt betrifft die Gefahr, daß aus dem druckbeaufschlagten Brauchwasser-Zulaufschlauch Leckwasser mit ebenfalls hohem Druck austritt und spannungsführende Teile innerhalb des Gehäuses trifft. Darin kann eine Gefahr für die Bedienungsperson und für die spannungsführenden Teile gesehen werden.Such a household appliance is known from DE-A-3 014 427. Are electrically switchable valves arranged in such a household appliance in the upper region of the housing, then there is the difficulty of collecting the leakage water emerging from a section of the inlet hose rising to these valves in the housing at the location of the floor pan at which the leakage water monitoring device is arranged . This location of the floor pan can be, for example, a localized depression. If leakage water escapes from other places in the floor pan within the machine, it will take some time for this leakage water to collect in the recess in the floor pan. Another aspect relates to the risk that leakage water with likewise high pressure escapes from the pressurized service water supply hose and hits live parts within the housing. This can be seen as a danger for the operator and for the live parts.

Der Erfindung liegt die Aufgabe zugrunde, die vorstehend beschriebenen Nachteile zu vermeiden.The invention has for its object to avoid the disadvantages described above.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß der Zulaufschlauch-Abschnitt zwischen dem unteren Gehäusebereich und dem oberen elektrisch schaltbaren Ventil ebenfalls von einem Außenmantel-Schlauch umgeben ist, der am ventilseitigen Ende geschlossen und über der Bodenwanne unter offen ist.According to the invention, this object is achieved in that the inlet hose section between the lower housing area and the upper electrically switchable valve is also surrounded by an outer jacket hose which is closed at the valve-side end and is open under the floor pan below.

Hierdurch hat der Konstrukteur eine einfache Möglichkeit, das aus dem ansteigenden Zulaufschlauch-Abschnitt austretende Leckwasser zielgerichtet in eine bestimmte Stelle der Bodenwanne zu führen.This gives the designer a simple possibility of directing the leakage water emerging from the rising inlet hose section into a specific location in the floor pan.

Anhand eines in der Zeichnung dargestellten Ausführungsbeispiels ist die Erfindung nachstehend erläutert:The invention is explained below using an exemplary embodiment shown in the drawing:

Die Zeichnung zeigt eine perspektivische, schematische Ansicht einer frontbeschickten Waschmaschine, deren Gehäusemantel im unteren Bereich und im Deckrahmenbereich teilweise gebrochen dargestellt ist. Dadurch sind die wesentlichen Teile des innerhalb des Gehäuses angeordneten Erfindungsgegenstands sichtbar.The drawing shows a perspective, schematic view of a front-loading washing machine, the housing jacket of which is shown partially broken in the lower area and in the cover frame area. As a result, the essential parts of the subject matter of the invention arranged inside the housing are visible.

Ein zum Hauswasser-Netz gehörender Wasserhahn 1 ist mittels einer Überwurfmutter 2 mit einem elektrisch schaltbaren Ventil 3 verbunden, das fest mit einem druckfesten Brauchwasser-Zulaufschlauch 4 und mit einem den Zulaufschlauch mit Abstand ummanteinden Außenmantel-Schlauch 5 verbunden ist. Am ventilseitigen Ende ist der Außenmant-Schlauch 5 zum Zulaufschlauch 4 hin fest verschlossen, so daß an diesem Ende kein Wasser nach oben austreten kann. Im unteren Bereich treten beide Schläuche durch die Rückwand 6 des Gehäuses in den Innenraum der Waschmaschine. Kurz hinter der Eintrittstelle 7 ist der Außenmantel-Schlauch 5 abgeschnitten und offen. Auf dem ummantelten Abschnitt des Zulaufschlauches 4 austretendes Leckwasser kann daher vom Außenmantel-Schlauch 5 ins Gehäuse geführt werden und kurz über der Bodenwanne 8 austreten.A faucet 1 belonging to the domestic water network is connected by means of a union nut 2 to an electrically switchable valve 3, which is firmly connected to a pressure-resistant process water supply hose 4 and to an outer jacket hose 5 which surrounds the supply hose at a distance. At the end of the valve, the outer jacket hose 5 is tightly closed toward the inlet hose 4, so that no water can escape upwards at this end. In the lower area, both hoses pass through the rear wall 6 of the housing into the interior of the washing machine. Shortly behind the entry point 7, the outer jacket tube 5 is cut off and open. Leakage water escaping on the covered section of the inlet hose 4 can therefore be led into the housing from the outer jacket hose 5 and emerge briefly above the floor pan 8.

Über der Bodenwanne 8 befindet sich außerdem eine Leckwasser-Überwachungseinrichtung 9, die im Falle von Leckwasser diesen Zustand an die nicht dargestellte Steuereinrichtung der Waschmaschine und über die elektrische Leitung 10 zum elektrisch schaltbaren Ventil 3 meldet. Das Ventil schließt dann sofort den Zulaufschlauch 4.Above the floor pan 8 there is also a leakage water monitoring device 9 which, in the case of leakage water, reports this state to the control device of the washing machine (not shown) and via the electrical line 10 to the electrically switchable valve 3. The valve then immediately closes the inlet hose 4.

Im oberen Bereich der Wasmaschine is ein Vielfach-Magnetventil 11 angeordnet, an dessen Eingang der nach oben führende Abschnitt 12 des innerhalb des Gehäuses fortgeführten Zulaufschlauches 4 angeschlossen ist. Der Zulaufschlauch-Abschnitt 12 ist ebenfalls von einem Außenmantel-Schlauch 13 mit Abstand umgeben, der bei der Einmündung in den Ventilblock 11 zum Zulaufschlauch hin verschlossen ist. Im unteren Bereich des Gehäuses ist der Außenmantel-Schlauch 13 wie der eingangsseitige Außenmantel-Schlauch 5 offen, aber soweit zu des letzeren Öffnung hingezogen, daß der Zulaufschlauch 4 möglichst vollständig ummantelt ist. Es läßt sich nicht vermeiden, daß der Zulaufschlauch 4 auf einer kurzen Strecke zwischen den beiden Öffnungen der Außenmantel-Schläuche 5 und 13 freiliegt. An dieser Stelle kann ein kurzes Abdeckblech unter Druck austretendes Leckwasser aus dem Zulaufschlauch 4 zur Bodenwanne 8 hin ablenken. Statt des Abdeckblechs können aber beide Außenmantel-Schläuche 5 und 13 aus einem Stück bestehen. An der gewünschten Stelle über der Bodenwanne kann dann eine nach unten gerichtete Leckwasser-Austrittsöffnung im Außenmantel-Schlauch angebracht sein.In the upper area of the washing machine there is a multiple solenoid valve 11, to the input of which the upwardly leading section 12 of the inlet hose 4 continued inside the housing is connected. The inlet hose section 12 is also surrounded at a distance by an outer jacket hose 13, which is closed towards the inlet hose when it opens into the valve block 11. In the lower area of the housing, the outer jacket hose 13 is open like the outer jacket hose 5 on the inlet side, but is drawn towards the latter opening to such an extent that the inlet hose 4 is encased as completely as possible. It cannot be avoided that the inlet hose 4 is exposed for a short distance between the two openings of the outer jacket hoses 5 and 13. At this point, a short cover plate under pressure leaking water from the inlet hose 4 to the floor pan 8 can deflect. Instead of the cover plate, however, both outer jacket tubes 5 and 13 can consist of one piece. A downward leakage water outlet opening can then be provided in the outer jacket hose at the desired location above the floor pan.

Alle sonstigen Leckstellen in einer Wasch- oder Geschirrspülmaschine stehen nicht unter dem Druck der Netzleitung und bedingen daher keine große Gefahr. Solches Leckwasser gelangt auch dann noch rechtzeitig in die Nähe der Leckwasser-Überwachungseinrichtung 9, wenn es an einer davon entfernten Stelle der Bodenwanne auftritt. Unter Druck aus dem Zulaufschlauch 4 austretendes Leckwasser aber erfordert die sofortige schaltungstechnische Reaktion der Maschine in Form einer Absperrung am netzseitigen Ende des Zulaufschlauches. Daher ist es von Vorteil, wenn die Öffnungen der Außenmantel-Schläuche 5 und 13 möglichst nahe der Leckwasser-Überwachungseinrichtung angebracht sind. Vorteilhafterweise ist der Fühler dieser Überwachungseinrichtung in einer Vertiefung der Bodenwanne angeordnet, so daß auch kleinere Mengen von Leckwasser die sofortige Auslösung der Sicherheits-Schaltungsmaßnahme verursachen.All other leaks in a washing machine or dishwasher are not under the pressure of the mains cable and therefore do not pose a great danger. Such leakage water still gets in the vicinity of the leakage water monitoring device 9 in good time if it occurs at a location on the floor pan remote therefrom. Leakage water emerging from the inlet hose 4 under pressure, however, requires the immediate circuit-technical reaction of the machine in the form of a shut-off at the network-side end of the inlet hose. It is therefore advantageous if the openings of the outer jacket hoses 5 and 13 are arranged as close as possible to the leakage water monitoring device. The sensor of this monitoring device is advantageously arranged in a recess in the floor pan, so that even smaller amounts of leakage water cause the safety circuit measure to be triggered immediately.

Claims (1)

  1. Water-conducting household appliance, such as washing machine or dishwashing machine, with a service water feed hose entering into the lower region of the housing, which hose is connected at the inlet end with an electrically switchable valve and surrounding on its section outside up to the lower region of the housing by an upwardly closed and downwardly open outer envelope hose led at a spacing from it, with at least one electrically switchable valve arranged within the upper region of the housing, which valve is connected with the outlet end of the feed hose, and with a base pan constructed for the catching of leakage water, in which a leakage water monitoring device is arranged, characterised thereby, that the feed hose section (12) between the lower housing region and the upper electrically switchable valve (1) is likewise surrounded by an out- erenvelope hose (13), which is closed at the valve end and downwardly open above the base pan (8).
EP86114058A 1985-11-11 1986-10-10 Household appliance using water Expired EP0222174B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3539943 1985-11-11
DE3539943 1985-11-11

Publications (3)

Publication Number Publication Date
EP0222174A2 EP0222174A2 (en) 1987-05-20
EP0222174A3 EP0222174A3 (en) 1987-10-28
EP0222174B1 true EP0222174B1 (en) 1989-12-20

Family

ID=6285674

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86114058A Expired EP0222174B1 (en) 1985-11-11 1986-10-10 Household appliance using water

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EP (1) EP0222174B1 (en)
DE (1) DE3667679D1 (en)
ES (1) ES2012753B3 (en)
GR (2) GR3000258T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19608527C2 (en) * 1996-03-06 1999-10-21 Judo Wasseraufbereitung Water damage protection device
US6035699A (en) * 1998-05-01 2000-03-14 Parlante; Nicholas Water leakage detection apparatus
US7574878B2 (en) * 2006-08-07 2009-08-18 Karl Siegfried Schroeder System and method for controlling the water flow of household appliances

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3014427C2 (en) * 1980-04-15 1982-12-23 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Safety device against flooding in household appliances carrying liquids

Also Published As

Publication number Publication date
ES2012753B3 (en) 1990-04-16
EP0222174A2 (en) 1987-05-20
GR890300098T1 (en) 1990-01-19
DE3667679D1 (en) 1990-01-25
GR3000258T3 (en) 1991-03-15
EP0222174A3 (en) 1987-10-28

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