EP3981314A1 - Überlaufschutz-abschaltsystem - Google Patents

Überlaufschutz-abschaltsystem Download PDF

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Publication number
EP3981314A1
EP3981314A1 EP21201274.4A EP21201274A EP3981314A1 EP 3981314 A1 EP3981314 A1 EP 3981314A1 EP 21201274 A EP21201274 A EP 21201274A EP 3981314 A1 EP3981314 A1 EP 3981314A1
Authority
EP
European Patent Office
Prior art keywords
outlet
needle
inlet
membrane
overflow
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.)
Pending
Application number
EP21201274.4A
Other languages
English (en)
French (fr)
Inventor
Stephane Cohen
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
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP3981314A1 publication Critical patent/EP3981314A1/de
Pending 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
    • D06F39/082—Safety arrangements for preventing water damage detecting faulty draining operations, e.g. filter blockage, faulty pump
    • 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
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4223—Devices for water discharge, e.g. devices to prevent siphoning, non-return valves
    • 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

Definitions

  • the present invention relates to anti-overflow stop systems allowing the user of a household appliance with water evacuation to obtain an automatic stop of the overflow by closing the evacuation, and this in an entirely mechanical manner. .
  • the present invention therefore aims to constitute an anti-overflow stop system adaptable to various evacuation devices, which is triggered independently and which does not require any electrical power supply.
  • Anti-overflow stop systems are known which make it possible to stop a household appliance.
  • the known solutions are essentially provided with electronic sensors coupled to electromechanical actuators, which involves their electrical supply in operation and moreover generates difficulties in calibrating and preventing failures of this equipment.
  • the object of the invention is to overcome at least some of the aforementioned drawbacks and to propose an anti-overflow stop system capable of combining the advantages of speed of reaction, reliability and adaptability for its implementation, and this on a wide range of drainpipes.
  • the subject of the invention is an anti-overflow stop system having a tubular central body provided with a water inlet and a water outlet for the circulation of water between the inlet and the outlet, a sealing device surrounding the tubular central body between the inlet and the outlet, a tubular air circulation circuit connecting an air inlet to an air outlet, the inlet of air being located in the immediate vicinity of the outlet and substantially parallel to the outlet, a needle mounted movably on the sealing device between an open position in which a first end of the needle is retracted into the sealing device and a closed position in which said first end of the needle projects into the central tubular body and obstructs the circulation of water between the inlet and the outlet, and means for moving the needle between its open and closed positions connected to the tubular air circulation circuit.
  • the tubular air circulation circuit comprises a membrane cavity and the means for moving the needle between its open and closed positions are activated thanks to the mobility of the membrane of said membrane cavity, said said membrane cavity being movably mounted in said membrane cavity so as to be movable in response to a change in pressure in said membrane cavity.
  • the needle is resiliently mounted on the sealing device towards the closed position of the needle.
  • the means for moving the needle include a spring working in compression between the sealing device and the central tubular body.
  • the means for moving the needle include a kinematic transmission chain connecting the membrane of the membrane cavity to a stop catch capable of cooperating with the needle.
  • the means for moving the needle comprise a kinematic transmission chain connecting the membrane of the membrane cavity to a stop latch capable of cooperating with the spring.
  • the kinematic transmission chain comprises a right-angled connecting rod pivotally mounted on the sealing device, configured to transmit transversely the movement of the membrane from the membrane cavity to the stop latch.
  • the anti-overflow stop system can also comprise, on the inlet, a diameter reducer.
  • the inlet is mounted on an outlet of a household appliance and the outlet is mounted on a sanitary evacuation pipe linked to a sewerage network, for example to mains drainage.
  • the invention also relates to an anti-overflow stop system in which the sealing device comprises an elastically deformable material coming into abutment against the sanitary evacuation pipe so as to form a sealed joint between the central tubular body and said pipe medical evacuation.
  • the Figure 1 illustrates an anti-overflow stop system of the invention.
  • the system 1 is mounted on the one hand, upstream, on an outlet 5 of a household appliance 3 generating waste water to be evacuated, for example a washing machine or a dishwasher, and on the other hand, downstream , on a sanitary drain pipe 7 connected to a sewerage network, for example to the mains drainage network.
  • System 1 demonstrates its usefulness in the event of a malfunction in the evacuation of waste water at the level of the evacuation pipe 7 towards the sewer network, for example due to a plug 9 formed downstream of the system 1 and partially obstructing or completely blocking the sanitary evacuation pipe 7, which, in the absence of a system such as that of the invention installed preventively, generates an overflow of water to be evacuated.
  • the anti-overflow stop system 1 comprises a tubular central body 13.
  • This body 13 can be made of a material comprising aluminum.
  • the body 13 is provided with a water inlet 14 and a water outlet 15 for the circulation of water between the inlet 14 and the outlet 15.
  • the sanitary drain pipe 7 can be vertical for the operation of the device 1, as illustrated, but can also operate at other angles, provided that the sanitary drain pipe 7 is placed lower than the device 1, so that a possible overflow begins with a blockage in the sanitary evacuation pipe 7 which generates a rise of water in the said sanitary evacuation pipe 7 towards the outlet 15, that is to say from the downstream towards the upstream, while the evacuation direction is normally from machine 3 towards its evacuation, then towards the arrival 5, then towards the body 13, then towards the exit 15, then towards the medical evacuation 7.
  • waste water or also called gray water or charged water
  • the system 1 further comprises a sealing device 11 surrounding the body 13.
  • the device 11 can be made as a shell in semi-rigid or elastically deformable material and in the shape of a rounded section as illustrated by the Figure 2 and 3 .
  • the device 11 comprises for example an elastically deformable material of the rubber type.
  • System 1 comprises a tubular air circulation circuit 10 which extends between an air inlet 25 and an air outlet 17.
  • the air circuit 10 makes it possible to create an automatic actuation of the system 1 by Venturi effect in the event of overflow.
  • the water rises along the sanitary evacuation pipe 7, as far as the outlet 15 and the air inlet 21, and approximately simultaneously blocks the outlet 15 and the air inlet. 21.
  • the system 1 is provided with a needle 30 movably mounted on the sealing device 11 between an open position and a closed position.
  • the first end 36 does not hinder the circulation of water in the body 13.
  • the open position is the normal operating position of the system 1 mounted on the device 3 in the absence of overflow.
  • the first end 36 therefore has a shape complementary to that of the inner section of the body 13.
  • the body 13 being for example tubular with a round section, the first end 36 is then for example discal.
  • a housing 37 can be provided in which the needle 30 can be housed to complete the obstruction of the body 13 and to improve its retention in position while it is in the closed position, in which position it must withstand axial thrusts of the water present in the body 13.
  • the closed position is the position sought in the event of an evacuation malfunction, a position triggered by an overflow downstream of system 1.
  • the system 1 comprises for this purpose means for moving the needle 30 between its open and closed positions.
  • the change of position of the needle 30 is therefore done by translation.
  • the displacement means may comprise a guide element 35 of the needle 30 in its translation from one position to another.
  • the displacement means are connected to the tubular air circulation circuit 10, so that the displacement of the needle valve 30 towards the closed position is operated automatically and without action on the part of the user.
  • the tubular air circulation circuit 10 may, as illustrated, further comprise a membrane cavity 23.
  • the means for moving the needle 30 between its open and closed positions are activated thanks to the mobility of the membrane of said membrane cavity 23.
  • the membrane of said membrane cavity 23 can be mounted mobile, for example mobile in translation, or able to deform, for example to bulge or to contract, in said membrane cavity 23.
  • the membrane can react mechanically by deforming or moving in response to a change in pressure in said membrane cavity 23.
  • the reaction force generated by the overflow arises from the pressure difference between the air circuit 10 and the inlet 5.
  • a first source of this driving pressure difference is the small diameter of the air circuit 10 to be compared with that of the body 13 and that of the evacuation 7.
  • This effect in particular, can be increased by a second source of the driving pressure difference which is the use of a narrowed section of an outlet segment 18 located between the air outlet 17 and a hook 19 of the circuit 10 downstream of the cavity 23, said narrowed air outlet section 18 being narrowed with respect to the section of the inlet segment located directly behind the air inlet 25.
  • the air circulates from the air inlet 25 to the air outlet 17 and is at equilibrium or slightly under depression relative to the air. located before the air inlet 25 and after the air outlet 17.
  • a third source of the driving pressure difference is the evacuation of water causing the circulation of water in the body 13, passing in front of the outlet 17, which creates a suction of the air located in the air circuit 10, which tends to move this air from the inventor inlet 25 to the air outlet 17, and therefore to depressurize the air in the air circuit 10.
  • the inlet 14 can advantageously include a diameter reducer, allowing a fourth source of the driving pressure difference.
  • the reducer makes it possible to create a strong Venturi effect between the inlet 5 and the outlet 7, thanks to the diameter of the body 13 which is smaller than those of the inlet 5 and the outlet 7.
  • the reducer also allows the adaptation to the system 1 of the various evacuation pipes 5 of the various appliances 3 of the trade.
  • the water from the overflow approximately simultaneously blocks the outlet 15 and the air inlet 25.
  • the displacement of the membrane then aims to cause the activation of the means for moving the needle 30.
  • the means for moving the needle 30 may comprise for this purpose a kinematic transmission chain 27,28,29 connecting the membrane of the membrane cavity 23 to an unlocking element 27 of the needle 30 with respect to the body 13.
  • the needle 30 can be resiliently mounted on the sealing device 11 towards the closed position of the needle 30.
  • the means for moving the needle 30 comprise a spring 33 working in compression between the sealing device 11 and the central tubular body 13.
  • the spring 33 can be mounted in compression on the one hand on the needle 30 and on the other hand on a retaining notch arranged in the sealing device 11.
  • the spring 33 therefore pushes the needle 30 towards the inside of the body 13.
  • the unlocking element 27 may consist of a stop catch 27 capable of cooperating with the needle 30, for example so as to be able to unpin it relative to a locking position in position of the needle 30 when the needle 30 is in position. opening towards an unlocking position in which the needle 30 is free in translation, for example through the guide support 35, and the spring 33 pushes it back to move into the closed position.
  • the stop latch 27 can therefore be adapted to unpin the positioning of the needle 30 by being capable of cooperating with the spring 33 instead of cooperating directly with the needle 30.
  • the kinematic transmission chain 27,28,29 may comprise a right-angled connecting rod 28 pivotally mounted on the sealing device 11, configured to transmit transversely the movement of the membrane from the membrane cavity 23 to the stop latch 27.
  • the square connecting rod 28 connects to the latch 27 a transmission rod 29 linked directly to the membrane.
  • the connecting rod 28 is positioned on the sealing device 11 on a rotation element placed at the right corner of the square formed by the connecting rod 28, so that the connecting rod 28 rotates according to this rotation element by transmitting the traction exerted by the membrane towards a traction of the latch 27 which unpins it with respect to the needle 30.
  • the spring 33 allows the needle 30 to be placed in the closed position and the obstruction exerted to be maintained, which prevents overflow.
  • the anti-overflow stop system 1 is configured to be removable, and removable for maintenance purposes of said system.
  • the body 13 can be dismantled from the rest of the system 1 by disconnecting the air inlet 21, the inlet 5 in the body 13 and an air outlet 17 ending in the sanitary evacuation. 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
EP21201274.4A 2020-10-06 2021-10-06 Überlaufschutz-abschaltsystem Pending EP3981314A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2010218A FR3114826A1 (fr) 2020-10-06 2020-10-06 Système d’arret anti-debordement

Publications (1)

Publication Number Publication Date
EP3981314A1 true EP3981314A1 (de) 2022-04-13

Family

ID=73699059

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21201274.4A Pending EP3981314A1 (de) 2020-10-06 2021-10-06 Überlaufschutz-abschaltsystem

Country Status (2)

Country Link
EP (1) EP3981314A1 (de)
FR (1) FR3114826A1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3516795A1 (de) * 1985-05-09 1986-11-13 Wolfgang 8011 Baldham Dahmen Schlauchbruchsicherungsvorrichtung
EP1085119A2 (de) * 1999-09-15 2001-03-21 ELTEK S.p.A. Sensor für hydraulische Vorrichtungen von Haushaltgeräten , insbesondere von Waschmaschinen, und hydraulische Vorrichtung mit einem solchen Sensor
EP1798326A1 (de) * 2005-12-15 2007-06-20 ELTEK S.p.A. Sicherheitsvorrichtung gegen Überschwemmung für Haushaltsgeräte
IT201700026951A1 (it) * 2017-03-10 2018-09-10 Pavanello S A S Di Pavanello Giuseppe & C Gruppo valvola di sicurezza, particolarmente per il tubo di carico dell'acqua di lavatrici e lavastoviglie.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3516795A1 (de) * 1985-05-09 1986-11-13 Wolfgang 8011 Baldham Dahmen Schlauchbruchsicherungsvorrichtung
EP1085119A2 (de) * 1999-09-15 2001-03-21 ELTEK S.p.A. Sensor für hydraulische Vorrichtungen von Haushaltgeräten , insbesondere von Waschmaschinen, und hydraulische Vorrichtung mit einem solchen Sensor
EP1798326A1 (de) * 2005-12-15 2007-06-20 ELTEK S.p.A. Sicherheitsvorrichtung gegen Überschwemmung für Haushaltsgeräte
IT201700026951A1 (it) * 2017-03-10 2018-09-10 Pavanello S A S Di Pavanello Giuseppe & C Gruppo valvola di sicurezza, particolarmente per il tubo di carico dell'acqua di lavatrici e lavastoviglie.

Also Published As

Publication number Publication date
FR3114826A1 (fr) 2022-04-08

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