EP2290152B1 - Dispositif de prévention de fuites pour conduites d'alimentation en eau d'appareils électriques domestiques - Google Patents

Dispositif de prévention de fuites pour conduites d'alimentation en eau d'appareils électriques domestiques Download PDF

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Publication number
EP2290152B1
EP2290152B1 EP09010829A EP09010829A EP2290152B1 EP 2290152 B1 EP2290152 B1 EP 2290152B1 EP 09010829 A EP09010829 A EP 09010829A EP 09010829 A EP09010829 A EP 09010829A EP 2290152 B1 EP2290152 B1 EP 2290152B1
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EP
European Patent Office
Prior art keywords
valve body
body unit
plunger
supply hose
magnet
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EP09010829A
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German (de)
English (en)
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EP2290152A1 (fr
Inventor
Andrea Dr. Restelli
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Individual
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Individual
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Priority to AT09010829T priority Critical patent/ATE544898T1/de
Priority to EP09010829A priority patent/EP2290152B1/fr
Publication of EP2290152A1 publication Critical patent/EP2290152A1/fr
Application granted granted Critical
Publication of EP2290152B1 publication Critical patent/EP2290152B1/fr
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    • 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
    • A47L15/421—Safety arrangements for preventing water damage
    • 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 leak prevention devices for water supply conduits of electrical household appliances, such as washing machines and dishwashers.
  • the device comprises a supply hose, a second hose surrounding the supply hose so as to form a chamber between the supply hose and the second hose and a safety valve mechanism having a valve body unit moveable from an open position to a closed position for closing the supply hose and a valve body unit actuating mechanism for at least magnetically triggering the movement of the valve body unit and being in fluid communication with the chamber, wherein the valve body unit comprises at least one first magnet, the valve body unit actuating mechanism comprises at least one further magnet which is moveable from a first to a second position, said at least one magnet of the valve body unit actuating mechanism in said second position triggers movement of the valve body unit into the closed position, the valve body actuating mechanism comprises a fluid-driven plunger in fluid connection with the chamber and said at least one magnet of the valve body unit is attached to said plunger for a sliding movement together with said plunger from said second position.
  • the at least one magnet of the valve body unit actuating mechanism in said first position, magnetically acts on the at least one magnet of the valve body unit so that the valve body is held in the open position.
  • the easiest solution should be when both magnets attract each other.
  • the valve body unit could also be held in the open position if the magnet of the valve body unit actuating mechanism and the magnet of the valve body unit repel each other.
  • the valve actuating mechanism comprises a float which moves a magnet from a lower valve holding position to an upper valve releasing position.
  • the casing housing the float comprises two iron cores associated with the lower valve holding position and the upper valve releasing position respectively.
  • EP 0 984 093 A1 discloses a device which comprises a closing valve, which is held by an actuating magnet in an open position.
  • the valve is located within the flow channel of the supply hose, so that in the open position an annular flow-through is formed.
  • the actuating magnet which faces the valve magnet with the same polarity, holds the valve body in the open position.
  • the actuating magnet is rotatably mounted and held in the open position of the valve in place by a moveable holder, which is biased by a compression spring in its holding position.
  • a dry sponge material Located at the opposite side of the holder is a dry sponge material, which upon contact with leaking water due to rupture of the supply hose will expand and then push the holder in its retracted position, so that the rotational movement of the actuating magnet is released. The actuating magnet will then no longer magnetically act on the valve magnet so that the valve closes.
  • the leaking water comes from the chamber created between the supply hose and the second hose surrounding the supply hose.
  • the second hose is in most of the cases, a corrugated hose. This mechanism prevents water from leaking out of the device and shut-down the household appliance, especially, a dishwasher or a washing machine.
  • a similar device using a magnetic actuating mechanism is known from DE 198 25 222 C1 as well as from EP 0 609 842 A1 and EP 0 555 679 A1 .
  • a further leak prevention device for water supply conduits is known from WO 2007/044346 A2 .
  • This device uses a plunger-driven valve.
  • the pressure side of the plunger is in fluid communication with the chamber formed between the supply hose and the outer second hose, so that upon leakage of water into the chamber and pressure build-up, the plunger is driven from a first position, in which the valve is open, to a second position, in which the valve is closed.
  • the plunger moves perpendicularly to the centre line of the supply hose, which afford large housings for the rupture control mechanism.
  • the plunger moves coaxially to the supply conduit, which affords a special design of the valve seat.
  • a disadvantage in this system is that the seals used around the valve opening have to function properly over a long period of time although the plunger will, in normal operation of the system, not move at all and will only move once upon rupture of the supply hose.
  • the object of the present invention is to design a more reliable device, which will also function properly after a long period of time.
  • the leak prevention device is characterized in that the valve body unit actuating mechanism comprises two magnets arranged in series along the line of travel of the plunger, and the two magnets are movable by the plunger to face the magnet of the valve body unit with different polarity in the first and second position, respectively.
  • the valve body unit actuating mechanism comprises two magnets arranged in series along the line of travel of the plunger, and the two magnets are movable by the plunger to face the magnet of the valve body unit with different polarity in the first and second position, respectively.
  • Such a design allows a reliable actuating mechanism, which is a combination of a fluid-driven plunger and a magnetic means.
  • This combination allows for a valve body actuation, which does not afford, that the magnetic means of the actuating mechanism comes into direct contact with the fluid.
  • the magnetic field from the magnets also acts through non-magnetic materials so that at least one magnet of the plunger can be located in a place, which is easily separated from the fluid stream.
  • the fluid-driven plunger only comes into contact with the fluid upon rupture of the supply hose and the spilling out of fluid into the chamber.
  • fluid is used interchangeably herein with the terms “liquid”, “gas” and/or “vapour” and is applicable in both singular and plural senses.
  • the supply hose has a centre line in the straight state and the plunger as well as the at least one magnet move along a line of travel from the first to the second position which is substantially parallel to the centre line in the straight state of the supply hose or within a range of +/-45° from the centre line of supply hose. Due to the combination of the magnetic triggering of the movement of the valve body unit and the fluid-driven plunger of the actuating mechanism, there is absolutely no need, that the plunger intersects the supply or the second hose, so that these can be positioned side by side. Usually, the supply and the second hose are flexible, so that in this regard, the straight state is defined to get a proper definition.
  • At least one magnet of the valve body unit actuating mechanism in said second position, magnetically acts on at least one magnet of the valve body unit so that the valve body is magnetically released to move into the closed position.
  • a repel force is created, which enhances the movement of the valve body unit into the closed position.
  • the at least one magnet of the valve body unit could also face one of the two magnets of the valve body unit actuating mechanism with a different polarity in the first position and the other magnet with the same polarity in the second position. With such an arrangement in the most simplified way, only one magnet is required for the valve body unit, which has a respective polarity, so that it is attracted in the open position and repelled in the closed position.
  • the valve body unit comprises a moveable cage.
  • the at least one magnet is attached to the cage and in the open position of the valve body unit, the valve body is positioned in the cage.
  • the cage can be designed so as to enhance movability, whereas the valve body can be optimized, to properly close the supply hose upon rupture of it.
  • the moveable cage may have a first lateral opening which cross-sectional size is larger than the cross-sectional size of the valve body.
  • the first lateral opening is covered in the open position of the valve body unit and is open in the closed position of the valve body unit so that the valve body is moveable laterally out of the cage.
  • the cage properly holds the valve body in place in the closed position but releases the valve body in the open position. This also means that the direction of movement of the cage and the direction of movement of the valve body to close the supply hose, at least after a certain range differ from each other.
  • the moveable cage may have a second lateral opening which is located substantially opposite of the first lateral opening, both lateral openings in the closed position of the valve body unit are in substantial alignment with the through-channel of the supply hose.
  • a longitudinal extension of the supply hose has a lateral channel in which the moveable cage and the valve body of the valve body unit are substantially completely located in the open position, so that the flow channel of the hose is completely open, and in the closed position, the moveable cage and the valve body are moved a substantial distance out of the lateral channel so that the valve body is released out of the cage through the first lateral opening, whereby the flow channel is closed by the released valve body. Due to the fact that the valve body unit can be substantially completely retracted into a lateral channel, the valve body unit does not project into the fluid channel of the supply hose, so that the full cross-sectional area of the supply hose is used during normal operation of the device.
  • valve does not create an annular or even more complicated, and in most cases, restricted through-flow, through a valve opening.
  • pressure drop and flow resistance are minimized.
  • the function of the lateral channel is to guide the cage together with the valve, so that the magnet may not rotate and the first and second lateral opening are properly positioned.
  • there is absolutely no need for a small or tiny space or distance between the cage and the channel which may be disadvantageous with regard to chalk or other substances in the fluid after several years of use. Due to the fact that a substantial space or distance is allowed, the functionality of such a design is guaranteed over a long period of time.
  • the valve body may be a ball of preferably resilient material.
  • a ball does not need any further guidance because it can be pressed on the valve seat in any position. If it is made from resilient material, it additionally has a proper sealing function and equalizes production tolerances.
  • a retention means which holds the plunger in the first position until a predetermined fluid pressure exerts onto the plunger.
  • the plunger can only move if a certain pressure threshold is exceeded, which is also good if the device is used upside down. In the majority of cases, it is only necessary to slightly hold the plunger in place so that only a minor pressure increase is sufficient to move the plunger.
  • the plunger has a first end for exerting full pressure and a second end, whereby the second end may be in contact with an indicator for moving the indicator, and the indicator is moved in the second position of the plunger out of a recess position into an exposed position.
  • the device does not only shut down the supply hose and prevents further flow of fluid through it, but also indicates that such an instance has occurred.
  • the plunger also moves the indicator from a barely visible to an exposed position.
  • an indicator may be a ball which is moveable in a tube, whereby the tube having a hidden portion in a recess of a housing and an exposed portion extending from said housing, the exposed portion having an end with a holder which prevents movement of the ball out of the tube and which forms a venting aperture, the retention means being located in the tube and in the first position, the ball is held by the retention means in the hidden portion of the tube so that also the plunger is held in the first position.
  • the plunger is indirectly held in the first position via the indicator ball.
  • the venting aperture is important for movement of the ball together with the plunger within the tube.
  • the indicator ball may also seal the venting aperture so that the whole system is closed and no fluid may leak out of the device.
  • the exposed portion of the tube may be made transparent.
  • the leak prevention device 1 includes an inner supply hose 2 and coaxially thereto an outer corrugated hose 3.
  • a chamber 4 is formed between the supply hose 2 and the corrugated hose 3, which extends along the length of hoses 2 and 3.
  • the inside diameter of the supply hose 2 is slightly greater than the outside diameter of the supply hose 2.
  • the device 1 further includes at the end of the hoses 2 and 3, tubular hose extensions (flanch connectors) 5 and 6 each of which is provided at its outer end with a connecting flange 7 and 8, respectively.
  • hose extension 5 comprises a tubular projection 11 having an inner diameter for closely fitting over the supply hose 2 and having an outer diameter for being closely fitted into the inner diameter of the corrugated hose 3.
  • An additional O-ring 12 enhances the sealing tightness of this connection.
  • Hose extension 6 comprises a similar tubular projection 13 which is however slightly longer and which has the same inner and outer diameter to be connected to the hoses 2 and 3.
  • An additional O-ring 14 also enhances the fluid tightness of this connection.
  • the connecting area of hose extension 6 and the two hoses 2 and 3 is surrounded by a ring or clamp 15, which is injection moulded onto the connection area of the hose extension 6 after the hoses 2 and 3 have been fitted.
  • connection area between hose extension 5 and the two hoses 2 and 3 is surrounded by a housing or casing 16 which can also be injection moulded around this area after fitting of all the elements contained in this area.
  • the hose extension 5 has an inner passage 5.1 which has a slightly larger inner diameter than the inner diameter of an inner passage 2.1 of supply hose 2.
  • a valve seat 17 is formed in the transition region of the supply hose 2 and the hose extension 5.
  • the hose extension 5 is provided with a radially outwardly extending channel 18.
  • This channel 18 completely houses, in the position as shown in Fig. 1 , a valve body unit 19 which includes a valve body 20 in the form of a rubber ball, a valve cage 21 for holding the valve body 20 in the shown position and a permanent magnet 22 attached to the valve cage 21.
  • the axis of polarity of this permanent magnet 22 is perpendicular to the centre axis A c of the supply hose 2 in the shown straight state.
  • the plus pole is directed to the right and the minus pole is directed to the left (as in the drawing).
  • the valve cage 21 has a lower first lateral opening 23, which is big enough to allow release of the valve body 20 as will be explained in more detail below.
  • a second lateral opening is provided which is located nearly in the middle of the cage 21.
  • the leak prevention device 1 further comprises a body unit actuating mechanism 26, which includes a fluid-driven plunger 27 of preferably circular cross-section, which is guided in a cylindrical bore 28 of a plunger casing 29.
  • the plunger 27 has a front extension 30, which holds two permanent magnets 31 and 32 in series.
  • the polarity axises of these permanent magnets 31 and 32 are also perpendicular to the centre axis A c of the supply hose 2.
  • the first permanent magnet 31 has a minus pole on the left-hand side and a plus pole on the right-hand side
  • the second permanent magnet 32 has a plus pole on the left-hand side and the minus pole on the right-hand side (as shown in the drawings).
  • the first permanent magnet 31 attracts the permanent magnet 22 of the valve body unit 19 and holds the valve body unit 19 retracted in the channel 18.
  • the front extension 30 together with the permanent magnets 31 and 32 is guided within a front extension 33 of the plunger casing 29.
  • This front extension 33 has some lateral projections 34 and 35.
  • the lateral projection 34 being fitted onto an outer tubular projection 36 of hose extension 5 and the second lateral projection 35 of is of tubular form and is closely fitted within the channel 18 and guides valve body unit 19. Due to this construction, the front extension 33 of the plunger casing 29 completely closes the channel 18 in the hose extension 5, so that a wall is created between the permanent magnet 22 of the valve body unit 19 and permanent magnets 31 and 32 of the valve body unit actuating mechanism 26.
  • the cylindrical casing 29 is connected to the corrugated hose 3 through a fluid connector 37 and a sealing ring 38.
  • the fluid connector 37 has fluid channel 39 which connects the chamber 4 with the cylindrical bore 28 of the plunger casing 29.
  • a coloured indicator ball 40 is provided, which is guided in an indicator tube 41.
  • the lower part of the indicator tube 41 is recessed in housing 16 and the upper, transparent portion of the indicator tube 41 projects out of the housing 16.
  • the upper end of indicator tube 41 is provided with an inwardly projecting holder 42 which prevents the indicator ball 14 from moving out of the indicator tube 41 and which forms a venting aperture 43 so that movement of the plunger 27 together with the indicator ball 40 is not hindered by pressure build-up.
  • Within the indicator tube 41 there is a slightly inwardly projecting retainer ring 44 which holds plunger 27 and the indicator ball 40 in the shown position ( Fig.
  • housing 16 The whole structure of the elements located within the boundaries of housing 16 is such, that the housing 16 might also be injection moulded onto these elements after assembly of these elements.
  • the connection between the fluid connector 37 and the corrugated hose 3 as well as of the front extension 33 of cylindrical casing 29 and the hose extension 5 as well as the indicator tube 41 have to be sufficiently tight.
  • the materials used for most of the elements used in the leak prevention device are certain plastic materials which are well known for such purposes.
  • the supply hose 2 has to be sufficiently pressure tight and sufficiently flexible. The same applies to the corrugated hose 3 although the material might be somewhat harder.
  • Fig. 1 the plunger 27 is shown in a first position. It's first permanent magnet 31 holds the valve body unit 19 in an open position, so that the whole cross-sectional area of the inner passage 5.1 of the hose extension 5 is open. Due to this design, there is no flow restriction so that the complete circular cross-section can be used. In usual household appliances, such as washing machines and dishwashers, water will flow through the leak prevention device 1. Thus, the supply hose 2 has to be sufficient pressure resistant for such a use. In this regard, it should be noted that in the chamber 4 defined between the supply hose 2 and the corrugated hose 3, only air is contained. It might also be possible to fill this space with some other fluid, especially gas.
  • the second permanent magnet 32 repels permanent magnets 22 of the valve body unit 19, so that the valve body unit 19 moves to the left (as in Fig. 2 ) and at least partially out of the channel 18.
  • the valve cage 21 then restricts through-flow of the inner passage 2.1 and the fluid has to flow through lateral opening 24 and "blows" out valve body 20 out of the valve cage 21 through the lateral opening 23.
  • the valve body 20, which is a rubber ball is then pressed onto the valve seat 17 and thus, shuts down the leak prevention device 1 and prevents further through-flow of fluid.
  • the front extension 30 of the plunger 27 extends out of the front extension 33 of plunger casing 29 and pushes the indicator ball 40 against holder 42.
  • the indicator ball 40 is a rubber ball, which then closes the venting aperture 43 so that also no fluid may leak out of housing 16.
  • the indicator ball 40 is clearly visible in the exposed transparent portion of the indicator tube 41 and clearly shows, that the valve body unit actuating mechanism 26 has triggered the valve body unit 19 so that it is in the closed position as shown in Fig. 2 .
  • valve body unit actuating mechanism 26 will not come into contact with the fluid streaming through the supply hose 2 before rupture of the supply hose 2.
  • triggering of movement of the valve body unit 19 can be made through a closed wall due to magnetic interaction. No critical materials, such as sponge materials have to be used in this regard.
  • the valve body unit 19 has only to be guided within the channel 18 and the lateral projection 35 so that it keeps the correct orientation in the open and closed position and during movement from the open to the closed position. No tight guidance is needed, so that reasonable tolerances or play can be used which prevent the valve body unit 19 from sticking in its open position after a long period of operation of time of the leak prevention device 1, for example, through shock furring, etc.
  • the force which can be applied onto the valve body unit 19 for triggering the movement can be rather strong, especially it can be much larger than the force created by use of usual pressure similar area. (e.g., in household water conduits)

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Magnetically Actuated Valves (AREA)
  • Washing And Drying Of Tableware (AREA)

Claims (13)

  1. Dispositif anti-fuite (1) pour des conduites d'alimentation en eau d'appareils électroménagers, comprenant un tuyau flexible d'alimentation (2), un second tuyau flexible (3) qui entoure le tuyau d'alimentation (2) de manière à former une chambre (4) entre le tuyau d'alimentation (2) et le second tuyau (3), et un mécanisme à soupape de sûreté qui a une unité de corps de soupape (19) mobile entre une position ouverte et une position fermée pour fermer le tuyau d'alimentation (2), et un mécanisme d'actionnement d'unité de corps de soupape (26) destiné à déclencher au moins magnétiquement le déplacement de l'unité de corps de soupape (19) et à être en communication de fluide avec la chambre (4), étant précisé que l'unité de corps de soupape (19) comprend au moins un premier aimant (22), que le mécanisme d'actionnement d'unité de corps de soupape (26) comprend au moins un autre aimant (31, 32) qui est mobile entre une première et une seconde position, que ledit aimant (31, 32) du mécanisme d'actionnement d'unité de corps de soupape (26), dans la seconde position, déclenche le déplacement de l'unité de corps de soupape (19) jusqu'à la position fermée, que le mécanisme d'actionnement d'unité de corps de soupape (26) comprend un piston commandé par fluide (27) qui est en communication de fluide avec la chambre (4), que ledit aimant (31, 32) du mécanisme d'actionnement d'unité de corps de soupape (26) est fixé au piston (27) pour coulisser avec celui-ci entre les première et seconde positions, et que ledit aimant (31) du mécanisme d'actionnement d'unité de corps de soupape (26), dans la première position, agit magnétiquement sur ledit aimant (22) de l'unité de corps de soupape (19) de telle sorte que le corps de soupape (20) soit maintenu en position ouverte,
    caractérisé en ce que le mécanisme d'actionnement d'unité de corps de soupape (26) comprend deux aimants (31, 32) disposés en série le long de la ligne de déplacement du piston (27) et en ce que les deux aimants (31, 32) du mécanisme d'actionnement d'unité de corps de soupape (26)
    sont aptes à être déplacés par le piston (27) pour faire face audit aimant (22) de l'unité de corps de soupape (19) avec une polarité différente dans les première et seconde positions, respectivement.
  2. Dispositif anti-fuite (1) selon la revendication 1, caractérisé en ce que le tuyau souple d'alimentation (2) a une ligne médiane (Ac), à l'état droit, et le piston (27) ainsi que ledit aimant (31, 32) du mécanisme d'actionnement d'unité de corps de soupape (26) se déplacent le long d'un axe de déplacement entre les première et seconde positions qui est globalement parallèle à la ligne médiane (Ac), à l'état droit, du tuyau flexible (2) ou de l'ordre de ±45° par rapport à la ligne médiane (Ac) du tuyau flexible (2).
  3. Dispositif anti-fuite (1) selon la revendication 1 ou 2, caractérisé en ce que ledit aimant (32) du mécanisme d'actionnement d'unité de corps de soupape (26), dans la seconde position, agit magnétiquement sur ledit aimant (22) de l'unité de corps de soupape (19) de telle sorte que ladite unité (19) soit magnétiquement libérée pour se déplacer jusqu'à la position fermée.
  4. Dispositif anti-fuite (1) selon la revendication 2 ou 3, caractérisé en ce que ledit aimant (22) de l'unité de corps de soupape (19) fait face à l'un (31) des deux aimants du mécanisme d'actionnement d'unité de corps de soupape (26) avec une polarité différente dans la première position, et à l'autre aimant (32) du mécanisme d'actionnement d'unité de corps de soupape (26) avec la même polarité dans la seconde position.
  5. Dispositif anti-fuite (1) selon l'une des revendications 1 à 4, caractérisé en ce que l'unité de corps de soupape (19) comprend une cage mobile (21), étant précisé que ledit aimant (22) de l'unité de corps de soupape (19) est fixé à ladite cage mobile (21) et que, dans la position ouverte de l'unité de corps de soupape (19), le corps de soupape (20) est positionné dans la cage (21).
  6. Dispositif anti-fuite (1) selon la revendication 5, caractérisé en ce que la cage mobile (21) a une première ouverture latérale (23) dont la taille, en coupe transversale, est plus grande que celle du corps de soupape (20), en ce que la première ouverture latérale (23) est couverte, dans la position ouverte de l'unité de corps de soupape (19), et est ouverte dans la position fermée de l'unité de corps de soupape (19), de sorte que le corps de soupape (20) est apte à se déplacer latéralement hors de la cage (21).
  7. Dispositif anti-fuite (1) selon la revendication 6, caractérisé en ce que la cage mobile (21) a une seconde ouverture latérale (24) qui se trouve globalement en face de la première ouverture latérale (23), les deux ouvertures latérales se trouvant globalement dans l'alignement, dans la position fermée de l'unité de corps de soupape (19), d'un passage intérieur (5.1) du tuyau flexible d'alimentation (2).
  8. Dispositif anti-fuite (1) selon les revendications 6 ou 7, caractérisé en ce qu'un prolongement longitudinal (5) du tuyau flexible d'alimentation (2) a un conduit latéral (18) dans lequel se trouvent quasiment entièrement la cage mobile (21) et le corps de soupape (20) de l'unité de corps de soupape (19), dans la position ouverte, de sorte que le passage intérieur (2.1) du tuyau flexible d'alimentation (2) est complètement ouvert, et en ce que dans la position fermée la cage mobile (21) et le corps de soupape (20) sont déplacés sur une distance importante hors du conduit latéral (18) de telle sorte que le corps de soupape (20) soit libéré hors de la cage (21) par la première ouverture latérale (23), moyennant quoi le passage intérieur (2.1) est fermé par le corps de soupape (20) libéré.
  9. Dispositif anti-fuite (1) selon la revendication 8, caractérisé en ce que le prolongement (5) du tuyau flexible d'alimentation (2) est formé par un raccord à bride qui est raccordé au tuyau flexible (2), en ce que le passage intérieur (5.1) du raccord à bride a une section transversale qui est légèrement plus grande que la section transversale du corps de soupape (20), et en ce que le
    passage intérieur (2.1) du tuyau flexible (2) a une section transversale qui est légèrement plus petite que la section transversale du corps de soupape (20), de sorte qu'un siège de soupape (17) est formé par une zone de transition du raccord à bride et du tuyau flexible (2).
  10. Dispositif anti-fuite (1) selon l'une des revendications 1 à 9, caractérisé en ce que le corps de soupape (20) est constitué par une bille en matériau de préférence élastique.
  11. Dispositif anti-fuite (1) selon l'une des revendications 1 à 10, caractérisé en ce qu'il est prévu des moyens de retenue (44) qui maintiennent le piston (27) dans la première position jusqu'à ce qu'une pression de fluide prédéterminée soit exercée sur le piston (27).
  12. Dispositif anti-fuite (1) selon l'une des revendications 1 à 11, caractérisé en ce que le piston (27) a une première extrémité pour qu'une pression de fluide soit exercée sur lui, et une seconde extrémité, en ce que cette seconde extrémité est en contact avec un indicateur (40) pour déplacer celui-ci, et en ce que l'indicateur est déplacé, dans la seconde position du piston (27), pour passer d'une position rétractée à une position exposée.
  13. Dispositif anti-fuite (1) selon la revendication 12, caractérisé en ce que l'indicateur (40) est constitué par une bille mobile dans un tube (41), le tube (41) ayant une partie cachée, dans un creux d'un boîtier (16), et une partie exposée qui s'étend à partir du boîtier (16), la partie exposée ayant une extrémité pourvue d'un support (42) qui empêche la bille de sortir du tube (41) et qui forme une ouverture d'aération (43), les moyens de retenue (44) se trouvant dans le tube (41), et dans la première position du piston (27) la bille étant maintenue par les moyens de retenue (44) dans la partie cachée du tube (41) de telle sorte que le piston (27) soit maintenu lui aussi dans la première position.
EP09010829A 2009-08-24 2009-08-24 Dispositif de prévention de fuites pour conduites d'alimentation en eau d'appareils électriques domestiques Not-in-force EP2290152B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT09010829T ATE544898T1 (de) 2009-08-24 2009-08-24 Leckverhinderungsvorrichtung für wasserversorgungsleitungen von elektrischen haushaltsgeräten
EP09010829A EP2290152B1 (fr) 2009-08-24 2009-08-24 Dispositif de prévention de fuites pour conduites d'alimentation en eau d'appareils électriques domestiques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09010829A EP2290152B1 (fr) 2009-08-24 2009-08-24 Dispositif de prévention de fuites pour conduites d'alimentation en eau d'appareils électriques domestiques

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EP2290152A1 EP2290152A1 (fr) 2011-03-02
EP2290152B1 true EP2290152B1 (fr) 2012-02-08

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AT (1) ATE544898T1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20110337A1 (it) 2011-04-15 2012-10-16 Eltek Spa Dispositivo di sicurezza contro perdite di fluido per elettrodomestici
ITTO20110338A1 (it) * 2011-04-15 2012-10-16 Eltek Spa Dispositivo di sicurezza contro perdite di fluido per elettrodomestici
ITTO20110972A1 (it) * 2011-10-27 2013-04-28 Reflex S R L Dispositivo di sicurezza antiallagamento per elettrodomestici
EP3692885B1 (fr) * 2019-02-05 2021-11-24 Vestel Elektronik Sanayi ve Ticaret A.S. Machine et procédé d'inhibition de l'écoulement d'eau dans une machine

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8405924U1 (de) * 1984-02-27 1984-05-24 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Sicherheits-zulaufschlauch fuer wasch- oder geschirrspuelmaschinen
DE3425588A1 (de) * 1984-07-11 1986-01-23 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Niveauregel- und sicherheitsvorrichtung fuer wasserfuehrende haushaltgeraete
DE8527754U1 (fr) * 1985-09-28 1987-02-12 Aweco Kunststofftechnik Geraetebau Gmbh & Co Kg, 7995 Neukirch, De
FR2596130B1 (fr) * 1986-03-18 1989-03-03 Socado Dispositif de securite pour conduit flexible d'alimentation en eau pour appareils electromenagers
IT1257369B (it) 1992-01-30 1996-01-15 R & Ds S R L Dispositivo antiallagamento per tubi d'alimentazione d'acqua di apparecchi elettrodomestici.
IT1268506B1 (it) 1993-02-03 1997-03-04 Re Flex Srl Dispositivo antiallagamento per tubi d'alimentazione d'acqua di apparecchi elettrodomestici
DE19825222C1 (de) 1998-06-05 2000-03-09 Tubiflex Lombarda Überflutungssicherung
DE19840022C1 (de) 1998-09-02 1999-12-23 Re Flex Srl Mozzate Überflutungssicherung mir drehbarem Magneten
WO2007044346A2 (fr) 2005-10-05 2007-04-19 Mcclung Oather A Jr Systeme de controle de rupture

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ATE544898T1 (de) 2012-02-15

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