EP0320372A1 - Rohrunterbrecher zum Verhindern des Rücksaugens aus einer WC-Schüssel in das Wasserversorgungssystem - Google Patents

Rohrunterbrecher zum Verhindern des Rücksaugens aus einer WC-Schüssel in das Wasserversorgungssystem Download PDF

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Publication number
EP0320372A1
EP0320372A1 EP88403091A EP88403091A EP0320372A1 EP 0320372 A1 EP0320372 A1 EP 0320372A1 EP 88403091 A EP88403091 A EP 88403091A EP 88403091 A EP88403091 A EP 88403091A EP 0320372 A1 EP0320372 A1 EP 0320372A1
Authority
EP
European Patent Office
Prior art keywords
cavity
backflow preventer
orifice
bowl
chute
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.)
Granted
Application number
EP88403091A
Other languages
English (en)
French (fr)
Other versions
EP0320372B1 (de
Inventor
René Albert Blanc
Franck Jean-Louis Blanc
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.)
Blanc Franck
Original Assignee
Blanc Franck
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 Blanc Franck filed Critical Blanc Franck
Publication of EP0320372A1 publication Critical patent/EP0320372A1/de
Application granted granted Critical
Publication of EP0320372B1 publication Critical patent/EP0320372B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/10—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves
    • E03C1/102—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves using an air gap device
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D11/00—Other component parts of water-closets, e.g. noise-reducing means in the flushing system, flushing pipes mounted in the bowl, seals for the bowl outlet, devices preventing overflow of the bowl contents; devices forming a water seal in the bowl after flushing, devices eliminating obstructions in the bowl outlet or preventing backflow of water and excrements from the waterpipe
    • E03D11/13—Parts or details of bowls; Special adaptations of pipe joints or couplings for use with bowls, e.g. provisions in bowl construction preventing backflow of waste-water from the bowl in the flushing pipe or cistern, provisions for a secondary flushing, for noise-reducing

Definitions

  • the present invention relates to backflow preventers, or backflow preventers, for supplying water to a reservoir from a pressure network comprising a first supply conduit suitable for being connected on one side to the network and opening out from the on the other side, through an orifice of smaller section than the section of said duct, in the upper part of a cavity, provided with a vent disposed downstream of the orifice of smaller section and a second discharge duct towards the reservoir, gravitatively connecting said cavity to said reservoir.
  • siphon backflow preventers for water supply like the one defined above.
  • a backflow preventer suitable for equipping WC grinders formed by bonding two symmetrical elements, for example obtained by molding or by injection of a plastic material into a mold. This solution has many drawbacks.
  • the invention aims to provide a siphon breaker allowing the supply of water from a pressure network of a toilet bowl, for rinsing said bowl, responding better than those previously known. to the requirements of the practice and allowing a greater safety in the exploitation, in particular in that it authorizes: - easy access to the orifice of smaller section than the section of the water supply duct, which allows its unclogging; the user is therefore not tempted to bypass the backflow preventer when it is blocked, better sealing of the backflow preventer, the projections of water droplets through the vent during a passage of water through the backflow preventer towards the bowl being eliminated.
  • the invention provides in particular a siphon backflow preventer for supplying water from a pressure network, from a toilet bowl, with a view to rinsing said bowl, comprising: a first supply conduit suitable for being connected on one side to the network and opening on the other side, through an injector orifice of smaller section than the section of said conduit, in the upper part of a cavity provided with a vent, said vent being placed downstream of said orifice, and a second evacuation duct towards the bowl, connecting by gravity said cavity to said bowl, characterized in that said cavity includes a removable cover partially hollowed out and defining a chamber supplied by the first conduit and opening upstream of said injector orifice, and in that the vent of said cavity is constituted by the outlet of a chute open on the cavity at a first distance from the outlet of said injector orifice, said chute extending externally relative to the wall of said cavity in a direction slightly tilted upwards.
  • the upper part of the cavity in which the injector orifice is pierced axially comprises a tubular skirt, said skirt extending relative to the outlet of said injector orifice over a distance at least equal to said first distance defined for the chute, - the skirt is pierced with at least one small diameter hole near the injector orifice
  • the upper part of the cavity comprises a removable part in which the injector orifice is pierced, said part being fixedly held between the cover provided with a seal and said cavity when said cover is fixed on said cavity
  • the injector orifice is in the form of a nozzle suitable for promoting air entrainment in the cavity via the chute during a water supply to the backflow preventer
  • the upward angle formed by the direction of the chute and a plane transversely perpendicular to the cavity is between 2 and 20 °, advantageously of the order of 5 °, - the backflow preventer is made of plastic by molding
  • the grinder toilet 1 comprises a device 2 enabling the bowl 3 of the toilet to be rinsed, the suction, grinding and expulsion of the effluents being carried out by means located in the lower part of the W. -C. 1.
  • the water supply 4 coming from the pressure network (a few bars) is done via a metering tap 5.
  • This metering tap alone replaces a conventional tank and its mechanism .
  • the bowl 3 has an anti-odor valve 6 with automatic return, suitable for opening to let water and faeces flow into the lower tank 7 for receiving the effluents. The valve closes automatically. As the tank 7 is filled, the float 8 lifts. When the electrical contact 9 is obtained, the multifunction pump 10 starts.
  • the pipe 12 is connected to the pipes for collecting valve water (not shown).
  • the metering tap 5 is connected to the bowl 3 via the backflow preventer 13.
  • the backflow preventer 13 comprises a first supply duct 14 which is therefore connected on one side to the network via the metering tap 5 and which opens on the other side in a chamber 15 formed in the cover 16.
  • the cover 16 is detachably fixed by fixing means 17, constituted for example by nuts and bolts, on the cavity 18.
  • This cavity is of revolution about an axis 19 and has an upper part 20.
  • the upper part 20 is pierced with an injector orifice 21 of smaller diameter than the diameter of the duct 14.
  • the cavity 18 includes a vent 22 constituted by a chute open on the cavity at a first distance d of the outlet 23 of the orifice 21.
  • the determined length is advantageously re the dimension of the radius of the equivalent section of the chute.
  • the upper part 20 of the cavity 18 comprises a tubular skirt 27 coaxial with the injector orifice 21 so that the water leaving said orifice, when the backflow preventer is supplied by the network, is channeled.
  • the skirt 27 extends over a distance d ′ with respect to the outlet 23 from the orifice 21 at least equal to the first distance d defined for the chute. This distance is for example of the order of 1.5 cm.
  • the skirt 27 can advantageously include holes 28 of small diameter which promote the formation of an air-water emulsion in the cavity.
  • the upper part 20 of the cavity comprises a removable part 30 in which the injector orifice 21 is pierced.
  • the part is fixedly held between the cover 16 and the cavity 18 by the fixing means 17.
  • a seal 31 ensures the tightness of the attachment of the removable cover.
  • the orifice 21 is in the form of a slightly conical nozzle with a diameter narrowing downwards and penetrating 1 or 2 mm into the tubular skirt so as to allow an acceleration of the liquid under pressure arriving via the pipe 14. The resulting jet promotes the entrainment of air into the cavity via the chute during the passage of water to the bowl of W. -C. 3.
  • the cavity 18 is profiled at the bottom in a frusto-conical fashion to promote flow.
  • the backflow preventer 13 furthermore comprises a conduit 32 for evacuating water to the bowl, connected by gravity to the cavity 18.
  • This conduit can be part of the same part as the cavity 13 (as shown in FIG. 3), or be formed by a removable rubber tube for example (as shown in Figure 2).
  • the conduit 32 is connected to the toilet bowl 3 by connection means 33 known per se.
  • the backflow preventer 13 can be formed in one piece including the supply duct 14, the cavity 18 and the discharge duct 32, only the cover 16 being separable from the rest of the backflow preventer (see FIG. 3) or be formed by separable parts one from the other, as are the cover 16, the seal 31, the part 30, the cavity 18 and the discharge duct 32 of the backflow preventer of the type shown in FIG. 2.
  • Fastening means 34 of the backflow preventer on the structure of the grinder 1 can be provided.
  • the constituent parts of the backflow preventer are advantageously made of thermoplastic material. The various methods of using thermoplastics, in particular injection molding, extrusion, blow molding, rotational molding or melt casting, can be used and allow the necessary parts to be easily manufactured with the shapes you want.
  • the user who wants to clean a W.-C. switches on the WC emptying mechanism by pressing the push-button 35.
  • the cold water supply 4 is then carried out with a regulated pressure, for example 3.5 bars via the metering tap 5 which sends under pressure the equivalent of a few liters of water to the backflow preventer 13.
  • the water enters through the conduit 14 into the chamber 15 and is injected through the injector orifice 21 into the cavity 18 in entraining air via the chute 22, which produces an air-liquid emulsion.
  • the emulsion flows with a certain pressure (lower than the initial pressure entering the backflow preventer but nevertheless sufficient to allow effective rinsing) in the conduit 32 then enters under pressure into the bowl, the walls of which are then rinsed vigorously with a circular motion.
  • the backflow preventer allowing air to enter the high point it constitutes, thus avoids the formation of a siphon and any contamination of the network in return.
  • the reliability and ease of unclogging the backflow preventer of the invention thus guarantee flawless use and complete safety, with regard to hygiene, of the toilet

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sanitary Device For Flush Toilet (AREA)
EP19880403091 1987-12-07 1988-12-06 Rohrunterbrecher zum Verhindern des Rücksaugens aus einer WC-Schüssel in das Wasserversorgungssystem Expired - Lifetime EP0320372B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8716983 1987-12-07
FR8716983A FR2624150B1 (fr) 1987-12-07 1987-12-07 Dispositif disconnecteur empechant le siphonnage d'une cuvette de w.-c. vers le reseau d'alimentation en eau

Publications (2)

Publication Number Publication Date
EP0320372A1 true EP0320372A1 (de) 1989-06-14
EP0320372B1 EP0320372B1 (de) 1990-10-10

Family

ID=9357563

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880403091 Expired - Lifetime EP0320372B1 (de) 1987-12-07 1988-12-06 Rohrunterbrecher zum Verhindern des Rücksaugens aus einer WC-Schüssel in das Wasserversorgungssystem

Country Status (2)

Country Link
EP (1) EP0320372B1 (de)
FR (1) FR2624150B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2696770A1 (fr) * 1992-10-14 1994-04-15 Fact Anal Scp Perfectionnements apportés aux dispositifs anti-rétrosiphoniques pour cuvettes de W.C..
EP1234921A1 (de) * 1999-11-29 2002-08-28 Inax Corporation Spülkastenloses wc, wc im europäischen stil, intimdusche und anschluss für wc
WO2016071852A1 (en) * 2014-11-04 2016-05-12 Mario Rossi Wc with low noise

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1830106A (en) * 1928-06-02 1931-11-03 John C Cromwell Plumbing system
US1838198A (en) * 1928-03-12 1931-12-29 William E Sloan Plumbing fixture
FR757523A (fr) * 1932-09-27 1933-12-28 Kula Freres Soc Dispositif anti-retour d'eau
FR1479863A (fr) * 1966-05-13 1967-05-05 Lancy Lab Aérateur à débit constant et brise-siphon
FR2457934A1 (fr) * 1979-05-29 1980-12-26 Piet Etablissements P Dispositif de disconnection a pression atmospherique pour appareil de distribution d'eau
FR2557176A1 (fr) * 1983-09-26 1985-06-28 Tech Meca Appliquees Et Disconnecteur statique pour cuvette de w.-c.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1838198A (en) * 1928-03-12 1931-12-29 William E Sloan Plumbing fixture
US1830106A (en) * 1928-06-02 1931-11-03 John C Cromwell Plumbing system
FR757523A (fr) * 1932-09-27 1933-12-28 Kula Freres Soc Dispositif anti-retour d'eau
FR1479863A (fr) * 1966-05-13 1967-05-05 Lancy Lab Aérateur à débit constant et brise-siphon
FR2457934A1 (fr) * 1979-05-29 1980-12-26 Piet Etablissements P Dispositif de disconnection a pression atmospherique pour appareil de distribution d'eau
FR2557176A1 (fr) * 1983-09-26 1985-06-28 Tech Meca Appliquees Et Disconnecteur statique pour cuvette de w.-c.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2696770A1 (fr) * 1992-10-14 1994-04-15 Fact Anal Scp Perfectionnements apportés aux dispositifs anti-rétrosiphoniques pour cuvettes de W.C..
EP1234921A1 (de) * 1999-11-29 2002-08-28 Inax Corporation Spülkastenloses wc, wc im europäischen stil, intimdusche und anschluss für wc
EP1234921A4 (de) * 1999-11-29 2004-07-28 Inax Corp Spülkastenloses wc, wc im europäischen stil, intimdusche und anschluss für wc
US7036159B2 (en) 1999-11-29 2006-05-02 Inax Corporation Tankless toilet, western-style flush toilet, part washing device and spud for flush toilet
WO2016071852A1 (en) * 2014-11-04 2016-05-12 Mario Rossi Wc with low noise

Also Published As

Publication number Publication date
FR2624150B1 (fr) 1990-05-04
EP0320372B1 (de) 1990-10-10
FR2624150A1 (fr) 1989-06-09

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