EP2224051B1 - Dispositif de sécurité pour détecter la présence d'une fuite de liquide dans une machines à laver et procédé d'assemblage de celle-ci - Google Patents

Dispositif de sécurité pour détecter la présence d'une fuite de liquide dans une machines à laver et procédé d'assemblage de celle-ci Download PDF

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Publication number
EP2224051B1
EP2224051B1 EP10152271.2A EP10152271A EP2224051B1 EP 2224051 B1 EP2224051 B1 EP 2224051B1 EP 10152271 A EP10152271 A EP 10152271A EP 2224051 B1 EP2224051 B1 EP 2224051B1
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EP
European Patent Office
Prior art keywords
shut
electric cable
passage duct
valve body
pipe
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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.)
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Application number
EP10152271.2A
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German (de)
English (en)
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EP2224051A1 (fr
Inventor
Alberto Lavazza
Andrea Rotta
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T&P SpA
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T&P SpA
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Publication of EP2224051A1 publication Critical patent/EP2224051A1/fr
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Publication of EP2224051B1 publication Critical patent/EP2224051B1/fr
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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 present invention relates to an anti-flooding safety device for a washing machine according to the preamble of claim 1.
  • the present invention also relates to a method of assembly of an anti-flooding safety device for a washing machine.
  • washing machines known in the art include anti-flooding safety devices for continuously monitoring and checking the presence of any leaks in the washing machine, in particular during the wash liquid supply and drain steps.
  • the anti-flooding safety devices known in the art comprise a valve body in which a passage duct for a liquid is defined, said passage duct comprising:
  • the anti-flooding devices known in the art also comprise:
  • the shut-off device is associated with the intermediate section of the passage duct and the electric cable is arranged in an annular space obtained between said pipe for supplying the liquid to a washing machine and an outer pipe, in particular of the corrugated type.
  • the main function of said outer pipe is to protect the liquid supply pipe and, should said latter pipe fail, to collect the leaking liquid and supply it to the washing machine, where suitable means are provided for leak detection.
  • the anti-flooding devices known in the art suffer from several problems, mostly due to the positioning of the electric cable and to the connection thereof to the shut-off device.
  • the electric cable be connected to the shut-off device hermetically, so as to prevent any accidental electric contacts also in the event of a wash liquid leak, as well as to prevent any leaking liquid from flowing out of the device on the solenoid valve side.
  • the connection between the electric cable and the shut-off device must be optimal from a mechanical viewpoint as well.
  • Document EP 1 798 326 A1 relates to an anti-flooding safety device for an electrical household appliance comprises a connector body (2,40), connected to which are the first ends of a first and a second flexible pipes (20,30), at least one part of the first pipe (20) extending longitudinally inside the second pipe (30).
  • the two pipes (20,30) are of a corrugated type, and the device (1) comprises at least one safety solenoid valve (4), mounted on the connector body (2).
  • At least one end portion of the first pipe (20) is coupled to a first end portion (21a) of a tubular element (21,23), preferably made of elastic synthetic material.
  • the tubular element (21,23) has at least one axial stretch of surface structured so as to engage with an axial stretch of surface of the first pipe (20).
  • a second end portion (21b) of the tubular element (21) is engaged or fitted on a coupling part (2a) of the connector body (2,40).
  • German patent No. DE4304712 discloses an anti-flooding device like the one previously described, wherein the outlet section of the passage duct has a fixing ring that embraces the outlet section and is integral with a gasket adapted to be coupled to a sleeve mounted on one end of the corrugated outer pipe. Both the fixing ring and the gasket integral therewith have a hole that allows for inserting the electric cable, which must then be connected to the shut-off device.
  • the hydraulic seal of the whole device may be inadequate.
  • reference numeral 1 designates as a whole an anti-flooding safety device for a washing machine according to the present invention.
  • Device 1 comprises a valve body 2, preferably made of plastic material, which defines a passage duct (indicated as a whole in the annexed drawings by reference numeral 3 and a dashed-dotted line) through which the liquid is supplied to a washing machine (not shown in the drawings).
  • a valve body 2 preferably made of plastic material, which defines a passage duct (indicated as a whole in the annexed drawings by reference numeral 3 and a dashed-dotted line) through which the liquid is supplied to a washing machine (not shown in the drawings).
  • passage duct 3 of valve body 2 is so constructed as to comprise:
  • Said inlet section 3A is preferably fitted with a ring nut 5 for coupling device 1 to said liquid supply source, in particular a tap.
  • said inlet section 3A may also be fitted with a sealing gasket and/or a filter and/or a flow regulator.
  • Device 1 further comprises:
  • shut-off device 6 takes place in a manner known in the art, and allows to shut off said passage duct 3 should any liquid leak from a component of the washing machine.
  • valve body 2 comprises an orifice 9 for inserting electric cable 7 in order to connect a terminal 7A of said electric cable 7 to shut-off device 6.
  • said orifice 9 comprises:
  • valve body 2 provides a particularly advantageous connection between electric cable 7 and shut-off device 6.
  • electric cable 7 is protected by valve body 2, in particular that portion of electric cable 7 which is closer to terminal 7A; consequently, said terminal 7A can be connected hermetically to shut-off device 6 even in the presence of wash liquid leaks.
  • orifice 9 allows to obtain an anti-flooding device 1 which is easy to assemble and which does not require any costly or complex operations.
  • said orifice 9 can be obtained in a particularly advantageous manner while moulding valve body 2.
  • Anti-flooding device 1 also comprises a casing 10 that ensures mechanical protection of shut-off device 6; at the same time, said casing 10 provides a covering for shut-off device 6 which is also aesthetically compatible with the washing machine connected to anti-flooding device 1.
  • the inner portion of said casing 10 contains an insulating material 11, in particular epoxy resin, suitable for providing additional insulation of terminal 7A of said electric cable 7 and of the connection thereof with shut-off device 6.
  • Anti-flooding device 1 further comprises a cover 12 adapted to be coupled to casing 10 for the purpose of enclosing valve body 2.
  • the coupling between casing 10 and cover 12, as well as the coupling between the outer pipe and casing 10 and/or cover 12, is preferably ensured by suitable snap-type coupling means.
  • Device 1 also comprises a sealing ring 13 arranged on the outer surface of outlet section 3B in order to couple the latter to corrugated outer pipe 8 and ensure an optimal hydraulic seal even if a leakage of wash liquid occurs.
  • Device 1 additionally comprises a metal bushing 14 which allows liquid supply pipe 4 to be secured to the outlet section 3B of passage duct 3. It is however clear that device 1 may alternatively comprise equivalent means for securing pipe 4 to said outlet section 3B.
  • valve body 2 of anti-flooding device 1 allows to obtain a particularly advantageous connection between electric cable 7 and shut-off device 6.
  • the advantages of the invention are also apparent in regard to a method of assembly of an anti-flooding device 1 for a washing machine according to the present invention.
  • said method comprises the following steps:
  • said step f) of securing pipe 4 is preceded by the positioning of a sealing ring 13 onto the outer surface of said outlet section 3B, so as to provide an adequate coupling between the latter and outer pipe 8 and to ensure an optimal hydraulic seal even if a leakage of wash liquid occurs.
  • the method of assembly of anti-flooding device 1 may comprise the step of coupling a cover 12 to casing 10 in order to enclose valve body 2, said coupling being in particular obtained through suitable snap-type coupling means.
  • valve body 2 allows to obtain a hermetical connection, from the hydraulic point of view, between electric cable 7 and shut-off device 6, so that anti-flooding device 1 can be safe against accidental electric contact also in the event of leakage of wash liquid. Furthermore, thanks to the particular assembly of anti-flooding device 1 according to the present invention, any leaking liquid cannot flow out of anti-flooding device 1 on the side of shut-off device 6.
  • a further advantage of anti-flooding device 1 according to the present invention is that it is so conceived as to simplify the assembly of the components thereof; as a result, it does not require any costly or complex assembly work.
  • Yet another advantage of the present invention is that, by inserting an insulating material 11, in particular epoxy resin, inside casing 10, it is possible to obtain a hermetical connection between electric cable 7 and shut-off device 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Treatment Of Fiber Materials (AREA)

Claims (11)

  1. Dispositif de sécurité contre les inondations (1) destiné à une machine à laver, du type comportant :
    - un corps de vanne (2), de préférence, constitué de matériau plastique, lequel définit un conduit de passage (3) comprenant une section d'entrée (3A) permettant de raccorder le dispositif (1) à une source d'alimentation en liquide, une section de sortie (3B) permettant de raccorder le dispositif (1) à un tuyau (4) pour fournir ledit liquide à une machine à laver, et une section intermédiaire (3C) pour raccorder ladite section d'entrée (3A) à ladite section de sortie (3B) ;
    - un dispositif de fermeture (6), comportant, en particulier, au moins une électrovanne, ledit dispositif de fermeture (6) étant associé au canal de passage (3) du corps de la vanne (2) ;
    - un câble électrique (7) qui permet de commander ledit dispositif de fermeture (6) dans le but de fermer le canal de passage (3),
    caractérisé en ce que
    ledit corps de vanne (2) comporte un orifice (9) pour insérer le câble électrique (7) dans le but de connecter une borne (7A) dudit câble électrique (7) au dispositif de fermeture (6),
    dans lequel ledit orifice (9) comporte une première section (9A) essentiellement parallèle au canal de passage (3) et une seconde section (9B) essentiellement perpendiculaire au canal de passage (3).
  2. Dispositif (1) selon la revendication 1, caractérisé en ce que ledit câble électrique (7) est placé dans un espace annulaire obtenu entre ledit tuyau (4) et un tuyau extérieur (8), en particulier du type ondulé.
  3. Dispositif (1) selon la revendication 2, caractérisé en ce qu'il comprend une bague d'étanchéité (13) positionnée sur la surface externe de la section de sortie (3B) pour coupler ladite section de sortie (3B) avec le tuyau ondulé extérieur (8).
  4. Dispositif (1) selon la revendication 1, caractérisé en ce qu'il comprend un boîtier (10) qui assure une protection mécanique du dispositif de fermeture (6) et qui contient un matériau isolant (11), en particulier de la résine époxy, appropriée pour fournir une isolation supplémentaire de la borne (7A) dudit câble électrique (7) et de sa connexion au dispositif de fermeture (6).
  5. Dispositif (1) selon la revendication 4, caractérisé en ce qu'il comprend un couvercle (12) conçu pour être couplé au boîtier (10), en particulier par l'intermédiaire de moyen de couplage du type par encliquetage, dans le but d'enfermer le corps de vanne (2).
  6. Dispositif (1) selon la revendication 1, caractérisé en ce qu'il comprend un raccord métallique (14) qui permet au tuyau d'alimentation en liquide (4) d'être fixé à la section de sortie (3B) du canal de passage (3).
  7. Procédé permettant d'assembler un dispositif contre les inondations (1) destiné à une machine à laver, comportant les étapes suivantes :
    a) associer un dispositif de fermeture (6), comportant en particulier au moins une électrovanne, au canal de passage (3) d'un corps de vanne (2) dudit dispositif contre les inondations (1) ;
    b) insérer un câble électrique (7), lequel permet de commander ledit dispositif de fermeture (6) dans le but de fermer le canal passage (3), dans un orifice (9) formé dans ledit corps de vanne (2), dans lequel ledit orifice (9) comprend une première section (9A) essentiellement parallèle au canal de passage (3) et une seconde section (9B) essentiellement perpendiculaire au canal de passage (3) ;
    c) connecter une borne (7A) dudit câble électrique (7) au dispositif de fermeture (6).
  8. Procédé selon la revendication 7, caractérisé en ce qu'il comprend les étapes suivantes :
    d) insérer un matériau isolant (11), en particulier une résine époxy, dans un boîtier (10) ;
    e) positionner le dispositif de fermeture (6) et la borne (7A) du câble électrique (7) dans ledit matériau isolant de façon à assurer une protection mécanique et hydraulique de ladite borne (7A) et dudit dispositif de fermeture (6).
  9. Procédé selon la revendication 8, caractérisé par le fait de comporter, de plus, les étapes suivantes :
    f) fixer un tuyau (4) pour fournir un liquide à ladite machine à laver à une section de sortie (3B) du canal de passage (3), en particulier en calfatant un raccord métallique (14) ;
    g) monter un tuyau extérieur (8) sur le corps de vanne (2) d'une manière telle que ledit câble électrique (7) soit placé dans un espace annulaire formé entre le tuyau extérieur (8) et ledit tuyau (4).
  10. Procédé selon la revendication 9, caractérisé en ce que ladite étape f) est précédée par le positionnement d'une bague d'étanchéité (13) sur la surface externe de ladite section de sortie (3B), de façon à fournir un couplage adéquat entre cette dernière et le tuyau de sortie (8) et à assurer une étanchéité hydraulique optimale même si une fuite de liquide de lavage se produit.
  11. Procédé selon la revendication 8, caractérisé en ce qu'un couvercle (12) est couplé au boîtier (10) dans le but d'enfermer le corps de vanne (2), ledit couplage étant en particulier réalisé par l'intermédiaire de moyens de couplage appropriés, de type à encliquetage.
EP10152271.2A 2009-02-03 2010-02-01 Dispositif de sécurité pour détecter la présence d'une fuite de liquide dans une machines à laver et procédé d'assemblage de celle-ci Active EP2224051B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTO2009A000063A IT1392966B1 (it) 2009-02-03 2009-02-03 Dispositivo antiallagamento di sicurezza per una macchina di lavaggio, e relativo metodo diassemblaggio

Publications (2)

Publication Number Publication Date
EP2224051A1 EP2224051A1 (fr) 2010-09-01
EP2224051B1 true EP2224051B1 (fr) 2016-04-20

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Application Number Title Priority Date Filing Date
EP10152271.2A Active EP2224051B1 (fr) 2009-02-03 2010-02-01 Dispositif de sécurité pour détecter la présence d'une fuite de liquide dans une machines à laver et procédé d'assemblage de celle-ci

Country Status (3)

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EP (1) EP2224051B1 (fr)
IT (1) IT1392966B1 (fr)
PL (1) PL2224051T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1406070B1 (it) 2011-02-18 2014-02-06 Bitron Spa Gruppo pre-montato per dispositivo acquastop e dispositivo che lo comprende
ITTO20130598A1 (it) * 2013-07-16 2015-01-17 Bitron Spa Dispositivo di carico e/o sicurezza antiallagamento per una macchina di lavaggio.
EP4357656A1 (fr) * 2022-09-09 2024-04-24 Wuxi Jinhua Yiyuan Technology Co., Ltd Ensemble tuyau d'admission d'eau antifuite

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1798326A1 (fr) * 2005-12-15 2007-06-20 ELTEK S.p.A. Dispositif de sécurité pour détecter la présence d'une fuite de liquide dans un appareil ménager

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4304712C2 (de) * 1993-02-16 1999-06-10 Bosch Siemens Hausgeraete Sicherheitsschlauch für den hydraulisch gesicherten Anschluß von wasserführenden Haushaltmaschinen
ITTO20020264A1 (it) * 2002-03-25 2003-09-25 Bitron Spa Dispositivo acquastop perfezionato.
KR20060027887A (ko) * 2004-09-24 2006-03-29 엘지전자 주식회사 식기 세척기의 아쿠아 스탑 장치

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1798326A1 (fr) * 2005-12-15 2007-06-20 ELTEK S.p.A. Dispositif de sécurité pour détecter la présence d'une fuite de liquide dans un appareil ménager

Also Published As

Publication number Publication date
ITTO20090063A1 (it) 2010-08-04
EP2224051A1 (fr) 2010-09-01
PL2224051T3 (pl) 2016-10-31
IT1392966B1 (it) 2012-04-02

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