EP3241951A1 - Drop section - Google Patents

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Publication number
EP3241951A1
EP3241951A1 EP17169107.4A EP17169107A EP3241951A1 EP 3241951 A1 EP3241951 A1 EP 3241951A1 EP 17169107 A EP17169107 A EP 17169107A EP 3241951 A1 EP3241951 A1 EP 3241951A1
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EP
European Patent Office
Prior art keywords
tubular
downstream
section
helical threads
fall
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
EP17169107.4A
Other languages
German (de)
French (fr)
Other versions
EP3241951B1 (en
Inventor
Marc Buitenhuis
François Douet
Jean-Luc Gauthier
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.)
Raccords et Plastiques Nicoll SA
Original Assignee
Raccords et Plastiques Nicoll SA
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Application filed by Raccords et Plastiques Nicoll SA filed Critical Raccords et Plastiques Nicoll SA
Publication of EP3241951A1 publication Critical patent/EP3241951A1/en
Application granted granted Critical
Publication of EP3241951B1 publication Critical patent/EP3241951B1/en
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Anticipated expiration legal-status Critical

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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
    • E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
    • E03C1/122—Pipe-line systems for waste water in building
    • 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
    • E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
    • E03C2001/1206—Pipes with specific features for influencing flow characteristics
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C2201/00—Details, devices or methods not otherwise provided for
    • E03C2201/60—Reducing noise in plumbing systems

Definitions

  • the invention generally relates to pipes or drops for liquids with multiple arrivals, substantially in so-called "bi-phasic" applications and in particular water pipes such as sanitary falls in the building.
  • a fall is a vertical evacuation that serves one or more floors of the dwelling.
  • the fall usually opens on the roof, which allows to ventilate the pipe and facilitate the flow of effluents.
  • the lower part it ends with a fairly steep section that leads to either a collective sanitation network (mains drainage) or an individual sanitation system.
  • a solution has been provided by proposing an aerator connection, which eliminates the need for a secondary pipe for ventilation.
  • the fitting or breeches of deflection presents a connecting portion opening into the main chute, and a baffle or main fall deflection, deflecting the main flow of the fall, at the connecting portion.
  • the connecting part and the baffle meet in the main chute, downstream of the connection.
  • the baffle portion is in a curved shape.
  • the document EP 2,447,424 also proposes an aerator connection in which the geometry of the baffle portion is modified.
  • the document EP 2,447,424 provides a pipe branch part, comprising an upper drop pipe section, a deflection section connecting to the upper fall pipe section, and a lower fall pipe section connecting to the deflection section having a outlet opening, as well as at least one filler section in the area of the deflection section.
  • the deflection section includes a first deflection domain, deflecting the wastewater with respect to the falling direction, and a second deflection domain disposed downstream seen in a falling direction with respect to the first deflection domain.
  • the second deviation range is inclined at an angle in the range of 2 to 12 °, with respect to the direction of fall, and at an angle in the range of 30 ° to 50 ° with respect to the direction of the deviated wastewater by the first deflection domain (8).
  • the baffle section forms a spiral portion at the deflection, the spiral starting upstream of the connecting portion and opening downstream of the connecting portion in the main chute, thereby creating a hydraulic speed component promoting a vortex flow to improve the flow downstream of the fitting.
  • Such a geometry is not easily reproducible especially for the assembly of the fall during assembly, and also has an undesired size.
  • An object of the present invention is to improve the falling flow characteristics.
  • Another object of the present invention is to obtain a compact hydraulic drop.
  • the invention proposes according to a first aspect a drop section for a flow of liquid or fluids, in particular water in a flow direction of chute, comprising an upstream tubular downcomer, a downstream tubular downcomer, a deflection section between the downstream tubular downcomer and the downstream tubular downcomer, a connection with a flowcap element opening into the downcomer, the downstream tubular downcomer, the downstream tubular downcomer, the downstream tubular downcomer and the flowmember are substantially aligned in the downflow direction, the chute section being characterized in that at least one of the upstream falling tubular element, the downstream tubular downcomer, and the off-axis section, in particular a tubular element thereof, comprises an inner surface provided with first helical threads.
  • the invention is mainly related to so-called bi-phasic applications.
  • a fluid or liquid must pass through the drop element without creating liquid plugs.
  • the maintenance of a column of air is possible during the deviation by providing only helical threads on one or more of the cylindrical portions.
  • the upstream fall tubular member, the downstream fall tubular member, and the flow lead member and the offset section are substantially aligned in a plane parallel to the fall flow direction.
  • the upstream downstream tubular element and the downstream downstream tubular element will be placed in registry relative to each other.
  • the deflection section includes a first deflection portion in the extension of the downstream tubular downcomer relative to the tubular element of upstream fall, a second deviation part in the extension of the first deviation part is substantially parallel to the direction of flow of fall, and a third part of deviation downstream of the second part of deviation and opening into the downstream tubular downstream element.
  • the elements constituting the entire fall section may be largely standardized elements for such applications.
  • the primary adaptation being helical threads on the inner surface, preferably with an inclination of the turns of about 15 ° to 30 ° and preferably with lengths sufficient to create or maintain a column of air - lengths that will be adapted case by case to because of the flow velocities and volumes as well as the diameters invoked.
  • the second deviation portion comprises an inner surface provided with second helical threads, in particular the second deflection portion being cylindrical.
  • the flow coupling member has an inner surface with third helical threads.
  • the third deflection portion forms an angle with the connector element in the range of 20 to 40 °, in particular 30 °.
  • the first deflection portion forms an angle with the upstream fall tubular member in the range of 30 to 60 °, in particular 45 °.
  • the first deviation portion forms an angle with the third deviation portion greater than 90 °, particularly with respective different angles with respect to the tubular elements resulting in asymmetric deviation.
  • the first deflection portion forms a first angle with the upstream fall tubular member and the third deflection portion forms a second angle different from the first angle with the downstream fall tubular member, resulting in an asymmetric offset.
  • the flow coupling member has an inner surface with third helical threads.
  • At least two of the first helical threads, the second helical threads and the third helical threads have the same thread pitch and / or the same thread orientation. In doing so, the continuity of the optimization is possible and, at the same time, it is conceivable to adapt the pitch and the orientation for an adaptation to the deviations.
  • At least two of the first helical threads, the second helical threads and the third helical threads have the same spacing between threads.
  • At least a portion of the helical threads have an inclination with respect to a direction of the tubular element provided with said helical threads of about 20 °, in particular forming an angle of less than 30 ° with the angles present in the deviation from the vertical.
  • the connector is an aerator connector with a pressure balancing connector element opening into the deflection section.
  • a connecting element is formed by an air intake valve and that in any case such an element remains purely optional knowing that the air column persists in the deviation and, therefore, overpressure should not occur under any circumstances.
  • a chute comprising one or more drop section (s) according to the first aspect or according to a preferred embodiment as defined in the present application.
  • the figure 1 illustrates a drop section 1 according to an embodiment of the present invention.
  • the chute section 1 is shown for the flow of effluents in a drop flow direction.
  • the fall flow direction is substantially vertical for a fall, as implemented on a construction site.
  • the chute section 1 comprises an upstream tubular downstream element 10, a downstream tubular downstream element 15, a deflection section 20 between the upstream tubular downstream element and the downstream tubular downstream element, and a connection 30 for the downstream tubular element. connection or the secondary drain connection on the chute section.
  • the coupling 30 is of the aerator coupling type, with a venting connection element and / or pressure balancer 34 and a flow coupling element 38.
  • the flow coupling element 38 opens into the tubular element of downstream fall 15, for the connection of secondary effluents in the main chute.
  • the pressure balancer connection element opens into the outflow section 20, to balance the pressure in the outflow section 20 and in the flow connection element 38.
  • the upstream fall tubular member 10, the downstream tubular downstream member 15 are substantially aligned in the falling flow direction. Furthermore, the upstream tubular downstream element 10, the downstream tubular downstream element 15 and the outflow section 20 are substantially in the same plane, which parallel to the direction of fall flow.
  • the deflection section 20 forms a baffle for diverting the flow coming from the chute at the fitting 30.
  • the deflection section comprises a first deflection portion 22 in the extension of the tubular upstream falling element 10 and inclined relative to the tubular upstream fall element 10, a second deviation portion 24 in the extension of the first deviation portion 22 and substantially parallel to the direction of flow of fall, and a third deviation portion 26 downstream of the second part deviation 24 and opening into the downstream tubular downstream element 15.
  • the third deflection portion 26 forms an angle with the second fitting portion 38 in the range of 20 to 40 °, in particular 30 °.
  • the tubular upstream fall element 10 comprises an upstream inner drop face 60 provided with first helical threads 61.
  • the first helical threads 61 serve to put the effluents in rotation, which plates them against the inner surface 60, and allows the formation of a column of air in the center of the pipe.
  • the first helical threads thus break the water piston which tends to form.
  • the first helical threads 61 serve to initiate a vortex for the effluents for the passage in the deflection section, that is to say that the inner surface of the upstream tubular element 10 ensures a good flow at the branching zone of secondary effluents to be connected to the main pipe via the connection 30, for example at each level of a building
  • the first helical threads slow down the flow of water upstream of the deflection, and thus contribute to the hydraulic characteristics of the system. This makes it possible to favor the fluidic and hydraulic behavior, by leaving the free fall trajectory of the effluents. Hydraulically, a vortex is thus created with an internal column of air that is also present inside the deviation since the slowdowns induced by these are initiated or accompanied by the slowing down and the introduction of a spiral speed component. helical threads. This results in an improvement and an option of adaptation of the water flow to arrive at an optimization of the management of the bi-phasic mixture air-water in the deviation making it possible to ensure a circulation of air between the upstream and the downstream of said drop section.
  • the figure 2 represents a fall section 201 according to another embodiment of the invention.
  • the embodiment of the figure 2 differs essentially from the embodiment of the figure 1 by the presence of helical threads of deflection in the section of deviation.
  • the identical elements between the figure 1 and the figure 2 have the same reference number and are not described again.
  • the deflection section 220 comprises a first deflection portion 222 in the extension of the upstream tubular fall element 10 and inclined relative to the tubular upstream fall element 10, a second deviation portion 224 in the extension of the first deflection portion 222 and substantially parallel to the flow direction of falling, and a third deviation portion 226 downstream of the second deviation portion 224 and opening into the downstream tubular downstream element 15.
  • the second deviation portion 224 has an inner surface provided with second helical threads 261 deviation.
  • the upstream fall tubular member 10 and the second off-axis portion 224 each have an inner surface with helical threads.
  • the present invention provides to use a drop section in which the vortex effect is created by the internal surfaces of the elements.
  • second helical threads 261 in the deflection section 20 in addition to the first helical threads 61, continuity of the thus-formed vortex is provided, which improves flow and hydraulic and acoustic performance.
  • the first helical threads 61 and the second helical threads 261 have the same thread pitch and the same thread orientation, and / or the same spacing between threads, to ensure vortex continuity.
  • the nets are continuous.
  • the figure 3 represents a fall section 301 according to another embodiment of the invention.
  • the embodiment of the figure 3 differs essentially from the embodiments of the figures 1 and 2 by the presence of helical threads of deflection in the connecting element.
  • the identical elements between the figure 1 and the figure 3 have the same reference number and are not described again.
  • the chute section 301 comprises a coupling 300, of the aerator coupling type, with a pressure balancing connection element 334 opening into the deflection section 320 and a flow coupling element 338 opening into the element tubular downstream fall.
  • the secondary effluent flow connection element 338 comprises an inner surface provided with third helical threads 361.
  • the figure 4 represents an embodiment combining the embodiments of the Figures 1 to 3 , i.e., a drop section 401 in which the upstream falling member 10 has first helical threads 61 on its inner surface, the deviating section 220 has second helical threads 261 on its inner surface, and the flow coupling member 338 also has third helical threads 361 on its inner surface.
  • At least two of the first helical threads 61, the second helical threads 261 and the third helical threads 361 have the same thread pitch and the same thread orientation, and / or the same thread spacing.
  • the nets are continuous.
  • Fourth helical threads may also be provided on the inner surface of the downstream tubular downcomer.
  • the elements of upstream, downstream, the deviation section are preferably obtained by extrusion or injection of thermoplastic material, rigid PVC monolayer type.
  • a mineral filler can be added for the acoustics of the fall section.
  • the drop elements may otherwise comprise a rigid outer sleeve and an acoustic sleeve, in contact with the effluents conveyed by the pipe.
  • the rigid outer sleeve is rigid PVC, lightened or not, and the acoustic sleeve can be made of plasticized PVC loaded.
  • Fireproof additives may also be provided for the rigid outer sleeve and / or the acoustic sleeve. The addition of biocides preventing the degradation of plasticizers is also possible.
  • the figure 5 illustrates a unitary sanitary fall 90 which starts from the upper floor of a building to cross all floors and then the ground floor to lead into the collector provided in the basement.
  • the chute includes fall sections according to the embodiments of the Figures 1 to 4 , connected in series.
  • the appliances are connected to the chute, via the connections 30, for the flow of secondary effluents via the flow connection element 38.
  • connection optionally with aerator, in which helical threads can be provided, with helical threads upstream of the connection, it limits the problems of depression and desiphoning which could result, the problems of overpressure resulting in gurgling and noise, while maintaining a compact system requiring only one perforation in the slab.
  • FIGS. 6 and 7 illustrate a drop section 601 according to another aspect of the present invention.
  • the chute section 601 is shown for effluent flow in a falling flow direction.
  • the fall flow direction is substantially vertical for a fall, as implemented on a construction site.
  • the chute section 601 comprises an upstream tubular downstream member 610, a downstream tubular downstream member 615, a outflow section 620 between the upstream tubular downstream member and the downstream tubular downstream member, and a connection 630 for the downfall tubular member 615. connection or the secondary drain connection on the chute section.
  • the upstream fall tubular member 610, the downstream tubular downstream member 615 are substantially aligned in the falling flow direction. Furthermore, the upstream tubular downstream element 610, the downstream tubular downstream element 615 and the outflow section 620 are substantially in the same plane, which is parallel to the falling flow direction.
  • the deflection section 620 forms a baffle for diverting the incoming flow from the chute to the fitting 630.
  • the deflection section 620 includes a first deflection portion 622 in the extension of the upstream tubular downstream member 610 and inclined relative to to the tubular upstream fall element 610, a second off-set portion 624 in the extension of the first off-set portion 622 and substantially parallel to the fall flow direction, and a third off-set portion 626 downstream of the second diverting portion 624 and opening into the tubular downstream falling element 615.
  • the coupling 630 is of the aerator coupling type, with a venting and / or pressure balancing element 634 and a flow coupling element 638.
  • the flow coupling element 638 opens into the tubular element of downstream fall 615, for the connection of secondary effluents in the main chute.
  • the pressure balancer connection element opens into the outflow section 620 to balance the pressure in the outflow section 620 and in the flow connection member 638.
  • a pair of pants 660 is provided for connecting the various household items.
  • the connecting element 638 in particular the fitting pants 660, can be rotated, in particular by rotation around the falling flow direction, to facilitate the connection of the various household elements, as can be seen in the figures 6 and7.
  • the drop section 601 is positioned on either side of a slab 690. More specifically, the slab 690 comprises a first through hole 691, for the passage of the second off-set portion 624, and a second hole through 692, for the passage of the flow coupling member 638 opening into the downstream tubular downstream member 615.
  • the first through hole 691 and the second through hole 692 are oriented in the flow direction, which is vertical when the fall is in functional position.
  • the fitting panty 660 is positioned above the slab 690, and can be used for connecting sanitary fixtures the height of which allows it.
  • some fixtures have a limited height, such as so-called Italian showers.
  • the coupling pants can be positioned under the slab, as illustrated in FIG. figure 8 .
  • a fall section 701 is illustrated.
  • the drop section 701 differs from the drop section 601 essentially by the fitting 730.
  • the chute section 701 comprises an upstream fall tubular element 710, a downstream tubular downcomer 715, a deflection section 720 between the upstream tubular downcomer and the downstream tubular downcomer, and a connection 730 for the downstream tubular element 715. connection or the secondary drain connection on the chute section.
  • the deflection section 720 forms a baffle for diverting the incoming flow from the chute to the fitting 730.
  • the deflection section 720 includes a first deflection portion 722 in the extension of the upstream tubular downfall member 710 and inclined relative to to the tubular upstream falling element 710, a second deviation portion 724 in the extension of the first deviation portion 722 and substantially parallel to the direction of flow of fall, and a third deviation portion 726 downstream of the second deflection portion 724 and opening into the tubular downstream falling element 715.
  • the connector 730 is of the aerator connection type, with a venting and / or pressure balancing element 734 and a flow coupling element 738.
  • the flow coupling element 738 opens into the tubular element of the downstream fall 715, for the connection of secondary effluents in the main chute.
  • the pressure balancing connector element opens into the deflection section 720, to balance the pressure in the deflection section 720 and in the flow connection member 738.
  • the drop section 701 is positioned on either side of a slab 790. More specifically, the slab 790 comprises a first through hole 791, for the passage of the second off-set portion 724, and a second hole through 792, for the passage of the flow coupling member 738 opening into the downstream tubular downstream member 715.
  • the first through hole 791 and the second through hole 792 are oriented in the direction of flow, which is vertical when the fall is in functional position.
  • a connecting panty 760 is provided for connecting the various household elements above the slab.
  • An additional joining panty 770 is also provided below the slab 790.
  • the connector 730 could have only one fitting panties 770, under the slab, or knickers 760 above the slab.
  • the connecting element 738 in particular the coupling pants 760 and the additional fitting pants 770, can be rotated, in particular by rotation around the falling flow direction, to facilitate the connection of the various household elements.
  • the fall section 701 is longer than the fall section 601 of the Figures 6 and 7 .
  • the chute section 701 has a greater length of the second deflection section 724, to account for the additional fitting panty 770.
  • the drop section may comprise first, second, third and / or fourth helical threads, similar to the drop sections illustrated in the drawings. Figures 1 to 4 .
  • the Figures 6a, 7a and 8a represent fall sections that differ from the fall sections represented respectively on the Figures 6, 7 and 8 , by the presence of helical threads.
  • the upstream downstream tubular element 610, 710 comprises an upstream inner falling surface, which may be provided with first helical threads 664.
  • the first helical threads serve to bring the effluents into rotation, which plate them against the inner surface , allowing the formation of a column of air in the center of the pipe.
  • the second misalignment portion 624, 724 has an inner surface that can be provided with second helical threads 661, 761 of deflection.
  • the flow connection element 638, 738 for secondary effluents comprises an inner surface which may be provided with third helical threads 663, 763.
  • At least two of the first helical threads, the second helical threads and the third helical threads have the same thread pitch and the same thread orientation, and / or the same spacing between threads.
  • the nets are continuous.
  • Fourth helical threads 665 may also be provided on the inner surface of the downstream tubular downcomer.
  • the Figures 6a, 7a and 8a represent fall sections with first, second, third, fourth helical threads. This is given by way of non-limiting example only, and the number of helical threads can vary, as the examples of Figures 1 to 4 .
  • a drop section may be provided with only the second and third helical threads.
  • the arrangement of the drop section according to the present invention is modular and allows great flexibility with respect to the slab.
  • the positioning of the pants can be done above and / or below the slab. The skilled person understands that this makes it possible to respect the recommended slopes allowing the flow of the fluids recommended to reach the drop section and the fall, and whatever the height of the apparatus or of the sanitary element to be connected.
  • the pants or panties are adjustable, which facilitates all the more the connection of the elements, regardless of their positioning in the space with respect to the chute section.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sewage (AREA)
  • Pipe Accessories (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
  • Chutes (AREA)
  • Sink And Installation For Waste Water (AREA)

Abstract

L'invention propose une section de chute (401) pour un écoulement de liquide ou fluides, en particulier d'eaux dans une direction d'écoulement de chute, comprenant un élément tubulaire de chute amont, un élément tubulaire de chute aval, une section de dévoiement entre l'élément tubulaire de chute amont et l'élément tubulaire de chute aval, un raccord avec un élément de raccord d'écoulement (338) débouchant dans l'élément tubulaire de chute aval, l'élément tubulaire de chute amont, l'élément tubulaire de chute aval et l'élément de raccord d'écoulement (338) étant sensiblement alignés dans la direction d'écoulement de chute, la section de chute étant caractérisée en ce que au moins l'un parmi l'élément tubulaire de chute amont, l'élément tubulaire de chute aval, et la section de dévoiement, en particulier un élément tubulaire de cette dernière comprend une surface interne munie de premiers filets hélicoïdaux (61, 261, 361).The invention proposes a drop section (401) for a flow of liquid or fluids, in particular water in a falling flow direction, comprising an upstream fall tubular member, a downstream fall tubular member, a section deviating between the upstream tubular downcomer and the downstream tubular downcomer, a connection with a downcomer element (338) opening into the downstream tubular downcomer, the downstream tubular downcomer, the downstream tubular downstream member and the flow coupling member (338) being substantially aligned in the falling flow direction, the falling section being characterized in that at least one of the tubular member Upstream chute, the downstream tubular downcomer, and the outflow section, in particular a tubular member thereof includes an inner surface provided with first helical threads (61, 261, 361).

Description

L'invention concerne en général les conduites ou chutes pour liquides avec de multiples arrivées, sensiblement dans des applications dites « bi-phasiques » et en particulier des conduites pour eaux telles les chutes sanitaires dans le bâtiment.The invention generally relates to pipes or drops for liquids with multiple arrivals, substantially in so-called "bi-phasic" applications and in particular water pipes such as sanitary falls in the building.

Une chute est une évacuation verticale qui dessert un ou plusieurs étages de l'habitation. En partie haute, la chute débouche usuellement sur la toiture, ce qui permet de ventiler la conduite et de faciliter l'écoulement des effluents. En partie basse, elle se termine par un tronçon en pente assez marquée qui aboutit soit à un réseau d'assainissement collectif (tout à l'égout), soit à une filière d'assainissement individuel.A fall is a vertical evacuation that serves one or more floors of the dwelling. In the upper part, the fall usually opens on the roof, which allows to ventilate the pipe and facilitate the flow of effluents. In the lower part, it ends with a fairly steep section that leads to either a collective sanitation network (mains drainage) or an individual sanitation system.

Dans les chutes dites unitaires, les différents appareils ménagers ou sanitaires viennent se brancher, et le bruit de vidange des appareils domestiques ou les eaux usées ont tendance à être répercutés par les parois de tuyaux de descente. D'autres contraintes sont liées à l'apparition de bouchons d'eau ou de surpression, qui peuvent aboutir à un désamorçage de siphon, avec les mauvaises odeurs qui en découlent, ou à des gargouillements et des bruits gênants.In so-called unitary falls, the various household or sanitary appliances are connected, and the noise of emptying household appliances or wastewater tends to be reflected by the walls of downpipes. Other constraints are related to the appearance of water plugs or overpressure, which can lead to a siphon defusing, with the resulting unpleasant odors, or gurgling and annoying noise.

Dans les bâtiments de grande hauteur, ces contraintes sont encore plus importantes, la hauteur et les débits hydrauliques étant augmentés, par la multiplication du nombre d'étages résultant aussi en un nombre plus élevé d'appareils sanitaires et un écoulement plus important et fréquent, et la hauteur pouvant aboutir à des risques plus importants de dépression ou surpression.In high buildings, these stresses are even more important, the height and the hydraulic flows being increased, by the multiplication of the number of stages also resulting in a greater number of sanitary appliances and a more important and frequent flow, and the height may lead to greater risks of depression or overpressure.

Les bâtiments en hauteur présentent également des contraintes d'encombrement plus importantes pour les conduites.Tall buildings also have greater congestion requirements for pipes.

Une solution a été apportée en proposant un raccord aérateur, qui supprime le besoin d'une conduite secondaire pour l'aération. Le raccord ou culotte de dévoiement présente une partie de raccord débouchant dans la chute principale, et une chicane ou déviation de chute principale, dévoyant le flux principal de la chute, au niveau de la partie de raccord. La partie de raccord et la chicane se rejoignent dans la chute principale, en aval du raccord. La partie de chicane est en forme courbe. Un tel exemple de raccord aérateur est proposé par exemple par la société Akatherm sous la marque Akavent™.A solution has been provided by proposing an aerator connection, which eliminates the need for a secondary pipe for ventilation. The fitting or breeches of deflection presents a connecting portion opening into the main chute, and a baffle or main fall deflection, deflecting the main flow of the fall, at the connecting portion. The connecting part and the baffle meet in the main chute, downstream of the connection. The baffle portion is in a curved shape. Such an example of an aerator connection is proposed for example by the company Akatherm under the trademark Akavent ™.

Afin d'améliorer les performances hydrauliques, le document EP 2 447 424 propose également un raccord aérateur dans lequel la géométrie de la partie de chicane est modifiée. Ainsi, le document EP 2 447 424 propose une pièce d'embranchement de conduite, comprenant une section de conduite de chute supérieure, une section de déviation se connectant à la section de conduite de chute supérieure, et une section de conduite de chute inférieure se connectant à la section de déviation ayant une ouverture de sortie, ainsi qu'au moins une section d'apport dans le domaine de la section de déviation. La section de déviation comprend un premier domaine de déviation, déviant les eaux usées par rapport à la direction de chute et un deuxième domaine de déviation disposé en aval vu en direction de chute par rapport au premier domaine de déviation. Le deuxième domaine de déviation est incliné d'un angle dans le domaine de 2 à 12°, par rapport à la direction de chute, et fait un angle dans le domaine de 30° à 50° par rapport à la direction des eaux usées déviées par le premier domaine de déviation (8). Ainsi, la section de chicane forme une partie de spirale au niveau de la déviation, la spirale démarrant en amont de la partie de raccord et débouchant en aval de la partie de raccord dans la chute principale, créant ainsi une composante de vitesse hydraulique favorisant un écoulement en vortex pour améliorer le débit au niveau aval du raccord. Une telle géométrie n'est pas facilement reproductible notamment pour l'assemblage de la chute lors du montage, et présente également un encombrement non souhaité.In order to improve the hydraulic performance, the document EP 2,447,424 also proposes an aerator connection in which the geometry of the baffle portion is modified. Thus, the document EP 2,447,424 provides a pipe branch part, comprising an upper drop pipe section, a deflection section connecting to the upper fall pipe section, and a lower fall pipe section connecting to the deflection section having a outlet opening, as well as at least one filler section in the area of the deflection section. The deflection section includes a first deflection domain, deflecting the wastewater with respect to the falling direction, and a second deflection domain disposed downstream seen in a falling direction with respect to the first deflection domain. The second deviation range is inclined at an angle in the range of 2 to 12 °, with respect to the direction of fall, and at an angle in the range of 30 ° to 50 ° with respect to the direction of the deviated wastewater by the first deflection domain (8). Thus, the baffle section forms a spiral portion at the deflection, the spiral starting upstream of the connecting portion and opening downstream of the connecting portion in the main chute, thereby creating a hydraulic speed component promoting a vortex flow to improve the flow downstream of the fitting. Such a geometry is not easily reproducible especially for the assembly of the fall during assembly, and also has an undesired size.

Un objet de la présente invention est d'améliorer les caractéristiques d'écoulement de chute.An object of the present invention is to improve the falling flow characteristics.

Un autre objectif de la présente invention est d'obtenir une chute hydraulique compacte.Another object of the present invention is to obtain a compact hydraulic drop.

A cet effet, l'invention propose selon un premier aspect une section de chute pour un écoulement de liquide ou fluides, en particulier d'eaux dans une direction d'écoulement de chute, comprenant un élément tubulaire de chute amont, un élément tubulaire de chute aval, une section de dévoiement entre l'élément tubulaire de chute amont et l'élément tubulaire de chute aval, un raccord avec un élément de raccord d'écoulement débouchant dans l'élément tubulaire de chute aval, l'élément tubulaire de chute amont, l'élément tubulaire de chute aval et l'élément de raccord d'écoulement étant sensiblement alignés dans la direction d'écoulement de chute, la section de chute étant caractérisée en ce que au moins l'un parmi l'élément tubulaire de chute amont, l'élément tubulaire de chute aval, et la section de dévoiement, en particulier un élément tubulaire de cette dernière comprend une surface interne munie de premiers filets hélicoïdaux.For this purpose, the invention proposes according to a first aspect a drop section for a flow of liquid or fluids, in particular water in a flow direction of chute, comprising an upstream tubular downcomer, a downstream tubular downcomer, a deflection section between the downstream tubular downcomer and the downstream tubular downcomer, a connection with a flowcap element opening into the downcomer, the downstream tubular downcomer, the downstream tubular downcomer, the downstream tubular downcomer and the flowmember are substantially aligned in the downflow direction, the chute section being characterized in that at least one of the upstream falling tubular element, the downstream tubular downcomer, and the off-axis section, in particular a tubular element thereof, comprises an inner surface provided with first helical threads.

De ce fait, l'invention a surtout trait à des applications dites bi-phasiques. Dans ces applications, un fluide ou liquide doit traverser l'élément de chute sans création de bouchons de liquide. Pour ce faire, il est avantageux de prévoir une circulation complémentaire de l'autre phase. Dans une application de chute d'eaux usées par exemple, il est donc possible d'amorcer ou de maintenir une colonne d'air. Il en résulte une amélioration et une option d'adaptation du débit d'eau pour arriver à une optimisation de la gestion du mélange bi-phasique air-eau dans le dévoiement permettant d'assurer une circulation d'air entre l'amont et l'aval de ladite section de chute. En effet, il a été constaté de manière surprenante que le maintien d'une colonne d'air est possible lors du dévoiement en ne prévoyant que des filets hélicoïdaux sur une ou plusieurs des parties cylindriques. Bien sûr, une optimisation prendra en compte des longueurs adéquates de ces présences de filets hélicoïdaux en respectant des angles de déviation ou de dévoiement sans toutefois augmenter l'encombrement du système puisqu'il n'y a aucun besoin d'une intervention sur la géométrie externe, même si bien sûr une telle adaptation reste possible en complément ou option.Therefore, the invention is mainly related to so-called bi-phasic applications. In these applications, a fluid or liquid must pass through the drop element without creating liquid plugs. To do this, it is advantageous to provide a complementary circulation of the other phase. In a wastewater application for example, it is therefore possible to initiate or maintain a column of air. This results in an improvement and an option of adaptation of the water flow to arrive at an optimization of the management of the bi-phasic mixture air-water in the deviation making it possible to ensure a circulation of air between the upstream and the downstream of said drop section. Indeed, it has been surprisingly found that the maintenance of a column of air is possible during the deviation by providing only helical threads on one or more of the cylindrical portions. Of course, an optimization will take into account adequate lengths of these helical thread presences by respecting deflection or deflection angles without, however, increasing the size of the system since there is no need for an intervention on the geometry. externally, although of course such an adaptation remains possible in addition or option.

Selon un aspect, l'élément tubulaire de chute amont, l'élément tubulaire de chute aval et l'élément de raccord d'écoulement et la section de dévoiement sont sensiblement alignés dans un plan parallèle à la direction d'écoulement de chute. Dans une réalisation particulière, l'élément tubulaire de chute amont et l'élément tubulaire de chute aval vont être placés en registre l'un par rapport à l'autre.In one aspect, the upstream fall tubular member, the downstream fall tubular member, and the flow lead member and the offset section are substantially aligned in a plane parallel to the fall flow direction. In a particular embodiment, the upstream downstream tubular element and the downstream downstream tubular element will be placed in registry relative to each other.

Selon un aspect, la section de dévoiement comprend une première partie de dévoiement dans le prolongement de l'élément tubulaire de chute amont et inclinée par rapport à l'élément tubulaire de chute amont, une deuxième partie de dévoiement dans le prolongement de la première partie de dévoiement est sensiblement parallèle à la direction d'écoulement de chute, et une troisième partie de dévoiement en aval de la deuxième partie de dévoiement et débouchant dans l'élément tubulaire de chute aval. Les éléments constituant l'ensemble de la section de chute peuvent être en grande partie des éléments standardisés pour de telles applications. L'adaptation primaire étant des filets hélicoïdaux en surface interne avec préférentiellement une inclinaison des spires d'environ 15° à 30° et avec préférentiellement des longueurs suffisantes pour créer ou maintenir une colonne d'air - longueurs qui seront adaptées au cas par cas en raison des vitesses et des volumes d'écoulement ainsi que des diamètres invoqués.In one aspect, the deflection section includes a first deflection portion in the extension of the downstream tubular downcomer relative to the tubular element of upstream fall, a second deviation part in the extension of the first deviation part is substantially parallel to the direction of flow of fall, and a third part of deviation downstream of the second part of deviation and opening into the downstream tubular downstream element. The elements constituting the entire fall section may be largely standardized elements for such applications. The primary adaptation being helical threads on the inner surface, preferably with an inclination of the turns of about 15 ° to 30 ° and preferably with lengths sufficient to create or maintain a column of air - lengths that will be adapted case by case to because of the flow velocities and volumes as well as the diameters invoked.

Selon un aspect, la deuxième partie de dévoiement comprend une surface interne munie de deuxièmes filets hélicoïdaux, en particulier la deuxième partie de dévoiement étant cylindrique.According to one aspect, the second deviation portion comprises an inner surface provided with second helical threads, in particular the second deflection portion being cylindrical.

Selon un aspect, l'élément de raccord d'écoulement a une surface interne munie de troisièmes filets hélicoïdaux.In one aspect, the flow coupling member has an inner surface with third helical threads.

Selon un aspect, la troisième partie de dévoiement forme un angle avec l'élément de raccord compris dans la gamme de 20 à 40°, en particulier 30°.In one aspect, the third deflection portion forms an angle with the connector element in the range of 20 to 40 °, in particular 30 °.

Selon un aspect, la première partie de dévoiement forme un angle avec l'élément tubulaire de chute amont compris dans la gamme de 30 à 60°, en particulier 45°.In one aspect, the first deflection portion forms an angle with the upstream fall tubular member in the range of 30 to 60 °, in particular 45 °.

Selon un aspect, la première partie de dévoiement forme un angle avec la troisième partie de dévoiement supérieure à 90°, en particulier avec des angles respectifs différents par rapport aux éléments tubulaires résultant en un dévoiement asymétrique. En particulier, la première partie de dévoiement forme un premier angle avec l'élément tubulaire de chute amont et la troisième partie de dévoiement forme un deuxième angle différent du premier angle avec l'élément tubulaire de chute aval, résultant en un dévoiement asymétrique.In one aspect, the first deviation portion forms an angle with the third deviation portion greater than 90 °, particularly with respective different angles with respect to the tubular elements resulting in asymmetric deviation. In particular, the first deflection portion forms a first angle with the upstream fall tubular member and the third deflection portion forms a second angle different from the first angle with the downstream fall tubular member, resulting in an asymmetric offset.

L'on peut donc constater que l'écoulement du liquide ou du fluide subit une mise en rotation par les spires des filets hélicoïdaux et un dévoiement uniquement en présence d'angles obtus de sorte que l'optimisation du mélange bi-phasique est de sorte à garantir l'existence d'une colonne d'air indépendamment du débit se créant éventuellement que très occasionnellement.It can thus be seen that the flow of the liquid or fluid is rotated by the turns of the helical threads and a deviation only in the presence of obtuse angles so that the optimization of the bi-phasic mixture is so as to guarantee the existence of a column of air independently of the flow possibly being created only very occasionally.

Selon un aspect, l'élément de raccord d'écoulement a une surface interne munie de troisièmes filets hélicoïdaux.In one aspect, the flow coupling member has an inner surface with third helical threads.

Selon un aspect, au moins deux parmi les premiers filets hélicoïdaux, les deuxièmes filets hélicoïdaux et les troisièmes filets hélicoïdaux présentent le même pas de filet et/ou la même orientation de filet. Ce faisant, la continuité de l'optimisation est possible et, en même temps, il est envisageable d'adapter le pas et l'orientation pour une adaptation aux dévoiements. En alternative, il est également possible d'envisager des pas ou des orientations variables, par exemple un pas progressivement plus serré ou espacé pour prévoir une mise en rotation du fluide ou liquide plus ou moins important et/ou pour prévoir un ralentissement plus ou moins important de l'écoulement de manière générale ou ponctuellement dans des endroits bien localisés.In one aspect, at least two of the first helical threads, the second helical threads and the third helical threads have the same thread pitch and / or the same thread orientation. In doing so, the continuity of the optimization is possible and, at the same time, it is conceivable to adapt the pitch and the orientation for an adaptation to the deviations. Alternatively, it is also possible to envisage variable steps or orientations, for example a progressively tighter or spaced step to provide for a more or less significant fluid or liquid rotation, and / or to provide for a more or less slowdown. important flow generally or punctually in well-localized locations.

Selon un aspect, au moins deux parmi les premiers filets hélicoïdaux, les deuxièmes filets hélicoïdaux et les troisièmes filets hélicoïdaux présentent le même espacement entre filets.In one aspect, at least two of the first helical threads, the second helical threads and the third helical threads have the same spacing between threads.

Selon un aspect, au moins une partie des filets hélicoïdaux présente une inclinaison par rapport à une direction de l'élément tubulaire muni desdits filets hélicoïdaux d'environ 20°, en particulier formant un angle de moins de 30° avec les angles présents dans le dévoiement par rapport à la verticale.According to one aspect, at least a portion of the helical threads have an inclination with respect to a direction of the tubular element provided with said helical threads of about 20 °, in particular forming an angle of less than 30 ° with the angles present in the deviation from the vertical.

Selon un aspect, le raccord est un raccord aérateur avec un élément de raccord équilibreur de pression débouchant dans la section de dévoiement. Il faut noter qu'usuellement un tel élément de raccord est formé par une valve d'admission d'air et que de toute manière un tel élément reste purement optionnel sachant que la colonne d'air persiste dans le dévoiement et, de ce fait, une surpression ne devrait se générer en aucun cas.In one aspect, the connector is an aerator connector with a pressure balancing connector element opening into the deflection section. It should be noted that usually such a connecting element is formed by an air intake valve and that in any case such an element remains purely optional knowing that the air column persists in the deviation and, therefore, overpressure should not occur under any circumstances.

Selon un autre aspect de l'invention, il est proposé une chute comprenant une ou plusieurs section(s) de chute selon le premier aspect ou selon une mode de réalisation préférentiel tel que défini dans la présente demande.According to another aspect of the invention, it is proposed a chute comprising one or more drop section (s) according to the first aspect or according to a preferred embodiment as defined in the present application.

D'autres caractéristiques et avantages de la présente invention ressortiront de la description faite ci-après en référence aux dessins annexés qui en illustrent un exemple de réalisation dépourvu de tout caractère limitatif, parmi lesquels :

  • La figure 1 illustre une section de chute selon un mode de réalisation de la présente invention ;
  • La figure 2 illustre une section de chute selon un autre mode de réalisation de la présente invention ;
  • La figure 3 illustre une section de chute selon un autre mode de réalisation de la présente invention ;
  • La figure 4 illustre une section de chute selon un autre mode de réalisation de la présente invention ;
  • La figure 5 illustre une chute selon un mode de réalisation de la présente invention ;
  • La figure 6 illustre une section de chute selon un autre mode de réalisation ;
  • La figure 6a illustre une section de chute selon un autre mode de réalisation ;
  • La figure 7 illustre une section de chute selon un autre mode de réalisation ;
  • La figure 7a illustre une section de chute selon un autre mode de réalisation ;
  • La figure 8 illustre une section de chute selon un autre mode de réalisation ;
  • La figure 8a illustre une section de chute selon un autre mode de réalisation.
Other characteristics and advantages of the present invention will emerge from the description given hereinafter with reference to the appended drawings, which illustrate an embodiment of this embodiment that is devoid of any limiting character, among which:
  • The figure 1 illustrates a drop section according to an embodiment of the present invention;
  • The figure 2 illustrates a drop section according to another embodiment of the present invention;
  • The figure 3 illustrates a drop section according to another embodiment of the present invention;
  • The figure 4 illustrates a drop section according to another embodiment of the present invention;
  • The figure 5 illustrates a fall according to an embodiment of the present invention;
  • The figure 6 illustrates a fall section according to another embodiment;
  • The figure 6a illustrates a fall section according to another embodiment;
  • The figure 7 illustrates a fall section according to another embodiment;
  • The figure 7a illustrates a fall section according to another embodiment;
  • The figure 8 illustrates a fall section according to another embodiment;
  • The figure 8a illustrates a drop section according to another embodiment.

Sur les dessins, des éléments identiques ou similaires sont indiqués avec des numéros de référence identiques ou similaires. Sur les figures 1 à 4, les sections de chute sont représentées respectivement en vue partiellement explosée, de côté et en vue isométrique avec des décrochements partiels.In the drawings, identical or similar elements are indicated with identical or similar reference numbers. On the Figures 1 to 4 , the drop sections are respectively shown in partially exploded view, side view and isometric view with partial recesses.

La figure 1 illustre une section de chute 1 selon un mode de réalisation de la présente invention. La section de chute 1 est représentée pour l'écoulement des effluents dans une direction d'écoulement de chute. La direction d'écoulement de chute est sensiblement verticale pour une chute, telle que mise en oeuvre sur un chantier.The figure 1 illustrates a drop section 1 according to an embodiment of the present invention. The chute section 1 is shown for the flow of effluents in a drop flow direction. The fall flow direction is substantially vertical for a fall, as implemented on a construction site.

La section de chute 1 comprend un élément tubulaire de chute amont 10, un élément tubulaire de chute aval 15, une section de dévoiement 20 entre l'élément tubulaire de chute amont et l'élément tubulaire de chute aval, et un raccord 30 pour le raccord ou le branchement d'évacuation secondaire sur la section de chute.The chute section 1 comprises an upstream tubular downstream element 10, a downstream tubular downstream element 15, a deflection section 20 between the upstream tubular downstream element and the downstream tubular downstream element, and a connection 30 for the downstream tubular element. connection or the secondary drain connection on the chute section.

Le raccord 30 est du type raccord aérateur, avec un élément de raccord d'aération et/ou équilibreur de pression 34 et un élément de raccord d'écoulement 38. L'élément de raccord d'écoulement 38 débouche dans l'élément tubulaire de chute aval 15, pour le raccordement d'effluents secondaires dans la chute principale. L'élément de raccord équilibreur de pression débouche dans la section de dévoiement 20, pour équilibrer la pression dans la section de dévoiement 20 et dans l'élément de raccord d'écoulement 38.The coupling 30 is of the aerator coupling type, with a venting connection element and / or pressure balancer 34 and a flow coupling element 38. The flow coupling element 38 opens into the tubular element of downstream fall 15, for the connection of secondary effluents in the main chute. The pressure balancer connection element opens into the outflow section 20, to balance the pressure in the outflow section 20 and in the flow connection element 38.

L'élément tubulaire de chute amont 10, l'élément tubulaire de chute aval 15 sont sensiblement alignés dans la direction d'écoulement de chute. Par ailleurs, l'élément tubulaire de chute amont 10, l'élément tubulaire de chute aval 15 et la section de dévoiement 20 se trouvent sensiblement dans un même plan, qui parallèle à la direction d'écoulement de chute.The upstream fall tubular member 10, the downstream tubular downstream member 15 are substantially aligned in the falling flow direction. Furthermore, the upstream tubular downstream element 10, the downstream tubular downstream element 15 and the outflow section 20 are substantially in the same plane, which parallel to the direction of fall flow.

La section de dévoiement 20 forme une chicane pour détourner le flux arrivant de la chute au niveau du raccord 30. La section de dévoiement comprend une première partie de dévoiement 22 dans le prolongement de l'élément tubulaire de chute amont 10 et inclinée par rapport à l'élément tubulaire de chute amont 10, une deuxième partie de dévoiement 24 dans le prolongement de la première partie de dévoiement 22 et sensiblement parallèle à la direction d'écoulement de chute, et une troisième partie de dévoiement 26 en aval de la deuxième partie de dévoiement 24 et débouchant dans l'élément tubulaire de chute aval 15.The deflection section 20 forms a baffle for diverting the flow coming from the chute at the fitting 30. The deflection section comprises a first deflection portion 22 in the extension of the tubular upstream falling element 10 and inclined relative to the tubular upstream fall element 10, a second deviation portion 24 in the extension of the first deviation portion 22 and substantially parallel to the direction of flow of fall, and a third deviation portion 26 downstream of the second part deviation 24 and opening into the downstream tubular downstream element 15.

Sur la figure 1, la troisième partie de dévoiement 26 forme un angle avec la deuxième partie de raccord 38 compris dans la gamme de 20 à 40°, en particulier 30°.On the figure 1 the third deflection portion 26 forms an angle with the second fitting portion 38 in the range of 20 to 40 °, in particular 30 °.

Dans le mode réalisation illustré à la figure 1, l'élément tubulaire de chute amont 10 comprend une surface interne 60 de chute amont munie de premiers filets hélicoïdaux 61.In the embodiment shown in figure 1 , the tubular upstream fall element 10 comprises an upstream inner drop face 60 provided with first helical threads 61.

Les premiers filets hélicoïdaux 61 servent à mettre les effluents en rotation, ce qui les plaque contre la surface interne 60, et permet la formation d'une colonne d'air au centre de la conduite.The first helical threads 61 serve to put the effluents in rotation, which plates them against the inner surface 60, and allows the formation of a column of air in the center of the pipe.

Les premiers filets hélicoïdaux cassent ainsi le piston d'eau qui a tendance à se former. En d'autres termes, les premiers filets hélicoïdaux 61 servent à amorcer un vortex pour les effluents pour le passage dans la section de dévoiement, c'est-à-dire que la surface interne de l'élément tubulaire amont 10 assure un bon écoulement au niveau de la zone d'embranchement d'effluents secondaires à raccorder sur la conduite principale via le raccord 30, par exemple à chaque niveau d'un immeubleThe first helical threads thus break the water piston which tends to form. In other words, the first helical threads 61 serve to initiate a vortex for the effluents for the passage in the deflection section, that is to say that the inner surface of the upstream tubular element 10 ensures a good flow at the branching zone of secondary effluents to be connected to the main pipe via the connection 30, for example at each level of a building

De plus, les premiers filets hélicoïdaux ralentissent le flux d'eau en amont de la déviation, et contribuent ainsi aux caractéristiques hydrauliques du système. Ceci permet de favoriser le comportement fluidique et hydraulique, en quittant la trajectoire de chute libre des effluents. Hydrauliquement, il se crée donc un vortex avec une colonne d'air interne qui reste présente également à l'intérieur du dévoiement puisque les ralentissements induits par ces derniers sont amorcés ou accompagnés par le ralentissement et l'introduction d'une composante de vitesse spiralique des filets hélicoïdaux. Il en résulte une amélioration et une option d'adaptation du débit d'eau pour arriver à une optimisation de la gestion du mélange bi-phasique air-eau dans le dévoiement permettant d'assurer une circulation d'air entre l'amont et l'aval de ladite section de chute.In addition, the first helical threads slow down the flow of water upstream of the deflection, and thus contribute to the hydraulic characteristics of the system. This makes it possible to favor the fluidic and hydraulic behavior, by leaving the free fall trajectory of the effluents. Hydraulically, a vortex is thus created with an internal column of air that is also present inside the deviation since the slowdowns induced by these are initiated or accompanied by the slowing down and the introduction of a spiral speed component. helical threads. This results in an improvement and an option of adaptation of the water flow to arrive at an optimization of the management of the bi-phasic mixture air-water in the deviation making it possible to ensure a circulation of air between the upstream and the downstream of said drop section.

La figure 2 représente une section de chute 201 selon un autre mode de réalisation de l'invention. Le mode de réalisation de la figure 2 diffère essentiellement du mode de réalisation de la figure 1 par la présence de filets hélicoïdaux de dévoiement dans la section de dévoiement. Les éléments identiques entre la figure 1 et la figure 2 ont le même numéro de référence et ne sont pas décrits à nouveau.The figure 2 represents a fall section 201 according to another embodiment of the invention. The embodiment of the figure 2 differs essentially from the embodiment of the figure 1 by the presence of helical threads of deflection in the section of deviation. The identical elements between the figure 1 and the figure 2 have the same reference number and are not described again.

La section de dévoiement 220 comprend une première partie de dévoiement 222 dans le prolongement de l'élément tubulaire de chute amont 10 et inclinée par rapport à l'élément tubulaire de chute amont 10, une deuxième partie de dévoiement 224 dans le prolongement de la première partie de dévoiement 222 et sensiblement parallèle à la direction d'écoulement de chute, et une troisième partie de dévoiement 226 en aval de la deuxième partie de dévoiement 224 et débouchant dans l'élément tubulaire de chute aval 15.The deflection section 220 comprises a first deflection portion 222 in the extension of the upstream tubular fall element 10 and inclined relative to the tubular upstream fall element 10, a second deviation portion 224 in the extension of the first deflection portion 222 and substantially parallel to the flow direction of falling, and a third deviation portion 226 downstream of the second deviation portion 224 and opening into the downstream tubular downstream element 15.

Selon le mode de réalisation de la figure 2, la deuxième partie de dévoiement 224 a une surface interne munie de deuxièmes filets hélicoïdaux 261 de dévoiement.According to the embodiment of the figure 2 , the second deviation portion 224 has an inner surface provided with second helical threads 261 deviation.

Ainsi, dans le mode de réalisation de la figure 2, l'élément tubulaire de chute amont 10 et la deuxième partie de dévoiement 224 présentent chacune une surface interne avec des filets hélicoïdaux.So, in the embodiment of the figure 2 the upstream fall tubular member 10 and the second off-axis portion 224 each have an inner surface with helical threads.

Ainsi, contrairement aux systèmes de l'art antérieur, dans lesquels les effluents sont mis en rotation par l'intermédiaire d'une section de déviation du type spirale, tournant autour de l'axe longitudinal de la section de chute, la présente invention propose d'utiliser une section de chute dans laquelle l'effet vortex est créé par les surfaces internes des éléments. En prévoyant des deuxièmes filets hélicoïdaux 261 dans la section de dévoiement 20, en plus des premiers filets hélicoïdaux 61, on assure une continuité du vortex ainsi formé, ce qui améliore l'écoulement et les performances hydrauliques et acoustiques.Thus, unlike the systems of the prior art, in which the effluents are rotated through a spiral-type deflection section, rotating about the longitudinal axis of the chute section, the present invention provides to use a drop section in which the vortex effect is created by the internal surfaces of the elements. By providing second helical threads 261 in the deflection section 20, in addition to the first helical threads 61, continuity of the thus-formed vortex is provided, which improves flow and hydraulic and acoustic performance.

De préférence, les premiers filets hélicoïdaux 61 et les deuxièmes filets hélicoïdaux 261 ont le même pas de filet et la même orientation de filet, et/ou le même espacement entre filets, pour assurer la continuité du vortex.Preferably, the first helical threads 61 and the second helical threads 261 have the same thread pitch and the same thread orientation, and / or the same spacing between threads, to ensure vortex continuity.

De préférence, les filets sont continus.Preferably, the nets are continuous.

La figure 3 représente une section de chute 301 selon un autre mode de réalisation de l'invention. Le mode de réalisation de la figure 3 diffère essentiellement des modes de réalisation des figures 1 et 2 par la présence de filets hélicoïdaux de dévoiement dans l'élément de raccord. Les éléments identiques entre la figure 1 et la figure 3 ont le même numéro de référence et ne sont pas décrits à nouveau.The figure 3 represents a fall section 301 according to another embodiment of the invention. The embodiment of the figure 3 differs essentially from the embodiments of the figures 1 and 2 by the presence of helical threads of deflection in the connecting element. The identical elements between the figure 1 and the figure 3 have the same reference number and are not described again.

A la figure 3, la section de chute 301 comprend un raccord 300, du type raccord aérateur, avec un élément de raccord équilibreur de pression 334 débouchant dans la section de dévoiement 320 et un élément de raccord d'écoulement 338 débouchant dans l'élément tubulaire de chute aval. Dans le mode de réalisation de la figure 3, l'élément de raccord d'écoulement 338 pour effluents secondaires comprend une surface interne munie de troisièmes filets hélicoïdaux 361.To the figure 3 , the chute section 301 comprises a coupling 300, of the aerator coupling type, with a pressure balancing connection element 334 opening into the deflection section 320 and a flow coupling element 338 opening into the element tubular downstream fall. In the embodiment of the figure 3 the secondary effluent flow connection element 338 comprises an inner surface provided with third helical threads 361.

La figure 4 représente un mode de réalisation combinant les modes de réalisation des figures 1 à 3, c'est-à-dire une section de chute 401 dans laquelle l'élément de chute amont 10 présente des premiers filets hélicoïdaux 61 sur sa surface interne, la section de dévoiement 220 présente des deuxièmes filets hélicoïdaux 261 sur sa surface interne, et l'élément de raccord d'écoulement 338 présente également des troisièmes filets hélicoïdaux 361 sur sa surface interne.The figure 4 represents an embodiment combining the embodiments of the Figures 1 to 3 , i.e., a drop section 401 in which the upstream falling member 10 has first helical threads 61 on its inner surface, the deviating section 220 has second helical threads 261 on its inner surface, and the flow coupling member 338 also has third helical threads 361 on its inner surface.

De préférence, au moins deux parmi les premiers filets hélicoïdaux 61, les deuxièmes filets hélicoïdaux 261 et les troisièmes filets hélicoïdaux 361 ont le même pas de filet et la même orientation de filet, et/ou le même espacement entre filets.Preferably, at least two of the first helical threads 61, the second helical threads 261 and the third helical threads 361 have the same thread pitch and the same thread orientation, and / or the same thread spacing.

De préférence, les filets sont continus.Preferably, the nets are continuous.

Des quatrièmes filets hélicoïdaux peuvent également être prévus sur la surface interne de l'élément tubulaire de chute aval.Fourth helical threads may also be provided on the inner surface of the downstream tubular downcomer.

Les éléments de chute amont, aval, la section de dévoiement sont de préférence obtenus par extrusion ou injection de matière thermoplastique, du type monocouche PVC rigide. Une charge minérale peut être ajoutée pour l'acoustique de la section de chute.The elements of upstream, downstream, the deviation section are preferably obtained by extrusion or injection of thermoplastic material, rigid PVC monolayer type. A mineral filler can be added for the acoustics of the fall section.

Les éléments de chute peuvent sinon comprendre un manchon extérieur rigide et un manchon acoustique, en contact avec les effluents véhiculés par la conduite. Le manchon extérieur rigide est en PVC rigide, allégé ou non, et le manchon acoustique peut être réalisé en PVC plastifié chargé. On peut également prévoir des additifs anti-feu, pour le manchon extérieur rigide et/ou le manchon acoustique. L'ajout de biocides prévenant la dégradation des plastifiants est également possible.The drop elements may otherwise comprise a rigid outer sleeve and an acoustic sleeve, in contact with the effluents conveyed by the pipe. The rigid outer sleeve is rigid PVC, lightened or not, and the acoustic sleeve can be made of plasticized PVC loaded. Fireproof additives may also be provided for the rigid outer sleeve and / or the acoustic sleeve. The addition of biocides preventing the degradation of plasticizers is also possible.

La figure 5 illustre une chute unitaire sanitaire 90 qui part de l'étage supérieur d'un bâtiment pour traverser tous les étages puis le rez-de-chaussée pour déboucher dans le collecteur prévu en sous-sol.The figure 5 illustrates a unitary sanitary fall 90 which starts from the upper floor of a building to cross all floors and then the ground floor to lead into the collector provided in the basement.

La chute comprend des sections de chute selon les modes de réalisation des figures 1 à 4, connectées en série.The chute includes fall sections according to the embodiments of the Figures 1 to 4 , connected in series.

Les appareils ménagers sont branchés sur la chute, par l'intermédiaire des raccords 30, pour l'écoulement des effluents secondaires via l'élément de raccord d'écoulement 38.The appliances are connected to the chute, via the connections 30, for the flow of secondary effluents via the flow connection element 38.

Ainsi, grâce à la combinaison d'un raccord optionnellement avec aérateur, dans lequel des filets hélicoïdaux peuvent être prévus, avec des filets hélicoïdaux en amont du raccord, on limite les problèmes de dépression et de désiphonnage qui pourrait en résulter, les problèmes de surpression aboutissant à des gargouillements et nuisances sonores, tout en maintenant un système compact ne nécessitant qu'une seule perforation dans la dalle.Thus, thanks to the combination of a connection optionally with aerator, in which helical threads can be provided, with helical threads upstream of the connection, it limits the problems of depression and desiphoning which could result, the problems of overpressure resulting in gurgling and noise, while maintaining a compact system requiring only one perforation in the slab.

Les figures 6 et 7 illustrent une section de chute 601 selon un autre aspect de la présente invention.The Figures 6 and 7 illustrate a drop section 601 according to another aspect of the present invention.

La section de chute 601 est représentée pour l'écoulement des effluents dans une direction d'écoulement de chute. La direction d'écoulement de chute est sensiblement verticale pour une chute, telle que mise en oeuvre sur un chantier.The chute section 601 is shown for effluent flow in a falling flow direction. The fall flow direction is substantially vertical for a fall, as implemented on a construction site.

La section de chute 601 comprend un élément tubulaire de chute amont 610, un élément tubulaire de chute aval 615, une section de dévoiement 620 entre l'élément tubulaire de chute amont et l'élément tubulaire de chute aval, et un raccord 630 pour le raccord ou le branchement d'évacuation secondaire sur la section de chute.The chute section 601 comprises an upstream tubular downstream member 610, a downstream tubular downstream member 615, a outflow section 620 between the upstream tubular downstream member and the downstream tubular downstream member, and a connection 630 for the downfall tubular member 615. connection or the secondary drain connection on the chute section.

L'élément tubulaire de chute amont 610, l'élément tubulaire de chute aval 615 sont sensiblement alignés dans la direction d'écoulement de chute. Par ailleurs, l'élément tubulaire de chute amont 610, l'élément tubulaire de chute aval 615 et la section de dévoiement 620 se trouvent sensiblement dans un même plan, qui est parallèle à la direction d'écoulement de chute.The upstream fall tubular member 610, the downstream tubular downstream member 615 are substantially aligned in the falling flow direction. Furthermore, the upstream tubular downstream element 610, the downstream tubular downstream element 615 and the outflow section 620 are substantially in the same plane, which is parallel to the falling flow direction.

La section de dévoiement 620 forme une chicane pour détourner le flux arrivant de la chute au niveau du raccord 630. La section de dévoiement 620 comprend une première partie de dévoiement 622 dans le prolongement de l'élément tubulaire de chute amont 610 et inclinée par rapport à l'élément tubulaire de chute amont 610, une deuxième partie de dévoiement 624 dans le prolongement de la première partie de dévoiement 622 et sensiblement parallèle à la direction d'écoulement de chute, et une troisième partie de dévoiement 626 en aval de la deuxième partie de dévoiement 624 et débouchant dans l'élément tubulaire de chute aval 615.The deflection section 620 forms a baffle for diverting the incoming flow from the chute to the fitting 630. The deflection section 620 includes a first deflection portion 622 in the extension of the upstream tubular downstream member 610 and inclined relative to to the tubular upstream fall element 610, a second off-set portion 624 in the extension of the first off-set portion 622 and substantially parallel to the fall flow direction, and a third off-set portion 626 downstream of the second diverting portion 624 and opening into the tubular downstream falling element 615.

Le raccord 630 est du type raccord aérateur, avec un élément de raccord d'aération et/ou équilibreur de pression 634 et un élément de raccord d'écoulement 638. L'élément de raccord d'écoulement 638 débouche dans l'élément tubulaire de chute aval 615, pour le raccordement d'effluents secondaires dans la chute principale. L'élément de raccord équilibreur de pression débouche dans la section de dévoiement 620, pour équilibrer la pression dans la section de dévoiement 620 et dans l'élément de raccord d'écoulement 638.The coupling 630 is of the aerator coupling type, with a venting and / or pressure balancing element 634 and a flow coupling element 638. The flow coupling element 638 opens into the tubular element of downstream fall 615, for the connection of secondary effluents in the main chute. The pressure balancer connection element opens into the outflow section 620 to balance the pressure in the outflow section 620 and in the flow connection member 638.

Une culotte de raccord 660 est prévue pour le raccordement des différents éléments ménagers. Dans le mode de réalisation illustré sur les figures 6 et 7, la culote de raccord 660 est prévue pour raccorder une évacuation de toilettes 681, une évacuation d'évier 682 et une évacuation de douche ou baignoire 683. Ceci est donné à titre d'illustration, non limitatif. L'élément de raccord 638, en particulier la culotte de raccord 660, sont orientables, en particulier par rotation autour de la direction d'écoulement de chute, pour faciliter le raccordement des différents éléments ménagers, comme on peut l'observer sur les figures 6 et7.A pair of pants 660 is provided for connecting the various household items. In the embodiment illustrated on the Figures 6 and 7 660 is designed to connect a 681 toilet outlet, a 682 sink drain and a 683 shower or bath drain. This is given by way of nonlimiting illustration. The connecting element 638, in particular the fitting pants 660, can be rotated, in particular by rotation around the falling flow direction, to facilitate the connection of the various household elements, as can be seen in the figures 6 and7.

Par ailleurs, la section de chute 601 est positionnée de part et d'autre d'une dalle 690. Plus précisément, la dalle 690 comprend un premier trou traversant 691, pour le passage de la deuxième partie de dévoiement 624, et un deuxième trou traversant 692, pour le passage de l'élément de raccord d'écoulement 638 débouchant dans l'élément tubulaire de chute aval 615. Le premier trou traversant 691 et le deuxième trou traversant 692 sont orientés dans la direction d'écoulement, qui est verticale lorsque la chute est en position fonctionnelle.Furthermore, the drop section 601 is positioned on either side of a slab 690. More specifically, the slab 690 comprises a first through hole 691, for the passage of the second off-set portion 624, and a second hole through 692, for the passage of the flow coupling member 638 opening into the downstream tubular downstream member 615. The first through hole 691 and the second through hole 692 are oriented in the flow direction, which is vertical when the fall is in functional position.

Sur les figures 6 et 7, la culotte de raccord 660 est positionnée au-dessus de la dalle 690, et peut servir pour le raccordement d'appareils sanitaires dont la hauteur le permet. Cependant, certains appareils sanitaires ont une hauteur limitée, comme par exemple les douches dites italiennes. Lorsque la hauteur est limitée, il est parfois compliqué de respecter la pente nécessaire préconisée pour permettre le bon écoulement des fluides jusqu'à la chute. Dans ce cas, selon la présente invention, la culotte de raccord peut être positionnée sous la dalle, comme illustré sur la figure 8.On the Figures 6 and 7 , the fitting panty 660 is positioned above the slab 690, and can be used for connecting sanitary fixtures the height of which allows it. However, some fixtures have a limited height, such as so-called Italian showers. When the height is limited, it is sometimes difficult to respect the required slope recommended to allow the smooth flow of fluids until the fall. In this case, according to the present invention, the coupling pants can be positioned under the slab, as illustrated in FIG. figure 8 .

A la figure 8, une section de chute 701 est illustrée. La section de chute 701 diffère de la section de chute 601 essentiellement par le raccord 730.To the figure 8 , a fall section 701 is illustrated. The drop section 701 differs from the drop section 601 essentially by the fitting 730.

La section de chute 701 comprend un élément tubulaire de chute amont 710, un élément tubulaire de chute aval 715, une section de dévoiement 720 entre l'élément tubulaire de chute amont et l'élément tubulaire de chute aval, et un raccord 730 pour le raccord ou le branchement d'évacuation secondaire sur la section de chute.The chute section 701 comprises an upstream fall tubular element 710, a downstream tubular downcomer 715, a deflection section 720 between the upstream tubular downcomer and the downstream tubular downcomer, and a connection 730 for the downstream tubular element 715. connection or the secondary drain connection on the chute section.

La section de dévoiement 720 forme une chicane pour détourner le flux arrivant de la chute au niveau du raccord 730. La section de dévoiement 720 comprend une première partie de dévoiement 722 dans le prolongement de l'élément tubulaire de chute amont 710 et inclinée par rapport à l'élément tubulaire de chute amont 710, une deuxième partie de dévoiement 724 dans le prolongement de la première partie de dévoiement 722 et sensiblement parallèle à la direction d'écoulement de chute, et une troisième partie de dévoiement 726 en aval de la deuxième partie de dévoiement 724 et débouchant dans l'élément tubulaire de chute aval 715.The deflection section 720 forms a baffle for diverting the incoming flow from the chute to the fitting 730. The deflection section 720 includes a first deflection portion 722 in the extension of the upstream tubular downfall member 710 and inclined relative to to the tubular upstream falling element 710, a second deviation portion 724 in the extension of the first deviation portion 722 and substantially parallel to the direction of flow of fall, and a third deviation portion 726 downstream of the second deflection portion 724 and opening into the tubular downstream falling element 715.

Le raccord 730 est du type raccord aérateur, avec un élément de raccord d'aération et/ou équilibreur de pression 734 et un élément de raccord d'écoulement 738. L'élément de raccord d'écoulement 738 débouche dans l'élément tubulaire de chute aval 715, pour le raccordement d'effluents secondaires dans la chute principale. L'élément de raccord équilibreur de pression débouche dans la section de dévoiement 720, pour équilibrer la pression dans la section de dévoiement 720 et dans l'élément de raccord d'écoulement 738.The connector 730 is of the aerator connection type, with a venting and / or pressure balancing element 734 and a flow coupling element 738. The flow coupling element 738 opens into the tubular element of the downstream fall 715, for the connection of secondary effluents in the main chute. The pressure balancing connector element opens into the deflection section 720, to balance the pressure in the deflection section 720 and in the flow connection member 738.

Par ailleurs, la section de chute 701 est positionnée de part et d'autre d'une dalle 790. Plus précisément, la dalle 790 comprend un premier trou traversant 791, pour le passage de la deuxième partie de dévoiement 724, et un deuxième trou traversant 792, pour le passage de l'élément de raccord d'écoulement 738 débouchant dans l'élément tubulaire de chute aval 715. Le premier trou traversant 791 et le deuxième trou traversant 792 sont orientés dans la direction d'écoulement, qui est verticale lorsque la chute est en position fonctionnelle.Furthermore, the drop section 701 is positioned on either side of a slab 790. More specifically, the slab 790 comprises a first through hole 791, for the passage of the second off-set portion 724, and a second hole through 792, for the passage of the flow coupling member 738 opening into the downstream tubular downstream member 715. The first through hole 791 and the second through hole 792 are oriented in the direction of flow, which is vertical when the fall is in functional position.

Dans cet exemple, une culotte de raccord 760 est prévue pour le raccordement des différents éléments ménagers, au-dessus de la dalle. Une culotte de raccord additionnelle 770 est également prévue, au-dessous de la dalle 790.In this example, a connecting panty 760 is provided for connecting the various household elements above the slab. An additional joining panty 770 is also provided below the slab 790.

Ceci est donné à titre d'illustration, non limitatif. Le raccord 730 pourrait n'avoir qu'une seule culotte de raccord 770, sous la dalle, ou une culotte de raccord 760 au-dessus de la dalle.This is given by way of illustration, not limiting. The connector 730 could have only one fitting panties 770, under the slab, or knickers 760 above the slab.

L'élément de raccord 738, en particulier la culotte de raccord 760 et la culotte de raccord additionnelle 770, sont orientables, en particulier par rotation autour de la direction d'écoulement de chute, pour faciliter le raccordement des différents éléments ménagers,The connecting element 738, in particular the coupling pants 760 and the additional fitting pants 770, can be rotated, in particular by rotation around the falling flow direction, to facilitate the connection of the various household elements.

On constate également que la section de chute 701 est plus longue que la section de chute 601 des figures 6 et 7. La section de chute 701 présente une plus grande longueur de la deuxième section de dévoiement 724, pour prendre en compte la culotte de raccord additionnelle 770.It is also noted that the fall section 701 is longer than the fall section 601 of the Figures 6 and 7 . The chute section 701 has a greater length of the second deflection section 724, to account for the additional fitting panty 770.

Afin d'optimiser les performances de la chute, la section de chute peut comprendre des premiers, deuxièmes, troisièmes et/ou quatrièmes filets hélicoïdaux, similairement aux sections de chute illustrées sur les figures 1 à 4.In order to optimize the performance of the fall, the drop section may comprise first, second, third and / or fourth helical threads, similar to the drop sections illustrated in the drawings. Figures 1 to 4 .

Les figures 6a, 7a et 8a représentent des sections de chute qui diffèrent des sections de chute représentées respectivement sur les figures 6, 7 et 8, par la présence de filets hélicoïdaux.The Figures 6a, 7a and 8a represent fall sections that differ from the fall sections represented respectively on the Figures 6, 7 and 8 , by the presence of helical threads.

Ainsi, l'élément tubulaire de chute amont 610, 710 comprend une surface interne de chute amont, qui peut être munie de premiers filets hélicoïdaux 664. Les premiers filets hélicoïdaux servent à mettre les effluents en rotation, ce qui les plaque contre la surface interne, permettant la formation d'une colonne d'air au centre de la conduite.Thus, the upstream downstream tubular element 610, 710 comprises an upstream inner falling surface, which may be provided with first helical threads 664. The first helical threads serve to bring the effluents into rotation, which plate them against the inner surface , allowing the formation of a column of air in the center of the pipe.

La deuxième partie de dévoiement 624, 724 a une surface interne qui peut être munie de deuxièmes filets hélicoïdaux 661, 761 de dévoiement.The second misalignment portion 624, 724 has an inner surface that can be provided with second helical threads 661, 761 of deflection.

De même, l'élément de raccord d'écoulement 638, 738 pour effluents secondaires comprend une surface interne quoi peut être munie de troisièmes filets hélicoïdaux 663, 763.Similarly, the flow connection element 638, 738 for secondary effluents comprises an inner surface which may be provided with third helical threads 663, 763.

De préférence, au moins deux parmi les premiers filets hélicoïdaux, les deuxièmes filets hélicoïdaux et les troisièmes filets hélicoïdaux ont le même pas de filet et la même orientation de filet, et/ou le même espacement entre filets. De préférence, les filets sont continus.Preferably, at least two of the first helical threads, the second helical threads and the third helical threads have the same thread pitch and the same thread orientation, and / or the same spacing between threads. Preferably, the nets are continuous.

Des quatrièmes filets hélicoïdaux 665 peuvent également être prévus sur la surface interne de l'élément tubulaire de chute aval.Fourth helical threads 665 may also be provided on the inner surface of the downstream tubular downcomer.

Les figures 6a, 7a et 8a représentent des sections de chute avec des premiers, deuxièmes, troisièmes, quatrièmes filets hélicoïdaux. Ceci est donné à titre d'exemple non limitatif uniquement, et le nombre de filets hélicoïdaux peut varier, comme les exemples des figures 1 à 4. Par exemple, une section de chute peut être munie uniquement des deuxièmes et troisièmes filets hélicoïdaux.The Figures 6a, 7a and 8a represent fall sections with first, second, third, fourth helical threads. This is given by way of non-limiting example only, and the number of helical threads can vary, as the examples of Figures 1 to 4 . For example, a drop section may be provided with only the second and third helical threads.

Ainsi, on constate que l'agencement de la section de chute selon la présente invention est modulaire et permet une grande flexibilité par rapport à la dalle. Le positionnement de la culotte peut être fait au-dessus et/ou au-dessous de la dalle. L'homme du métier comprend que cela permet de respecter les pentes préconisées permettant l'écoulement des fluides préconisées pour atteindre la section de chute et la chute, et ce quel que soit la hauteur de l'appareil ou de l'élément sanitaire à raccorder. De plus, la ou les culottes sont orientables, ce qui facilite d'autant plus le raccordement des éléments, quel que soit leur positionnement dans l'espace par rapport à la section de chute.Thus, it is found that the arrangement of the drop section according to the present invention is modular and allows great flexibility with respect to the slab. The positioning of the pants can be done above and / or below the slab. The skilled person understands that this makes it possible to respect the recommended slopes allowing the flow of the fluids recommended to reach the drop section and the fall, and whatever the height of the apparatus or of the sanitary element to be connected. . In addition, the pants or panties are adjustable, which facilitates all the more the connection of the elements, regardless of their positioning in the space with respect to the chute section.

Claims (13)

Section de chute (1 ; 201 ; 301) pour un écoulement de liquides ou fluides, en particulier d'eaux dans une direction d'écoulement de chute, comprenant un élément tubulaire de chute amont (10), un élément tubulaire de chute aval (15), une section de dévoiement (20; 220, 320) entre l'élément tubulaire de chute amont et l'élément tubulaire de chute aval, un raccord avec un élément de raccord d'écoulement (38 ; 338) débouchant dans l'élément tubulaire de chute aval,
l'élément tubulaire de chute amont (10), l'élément tubulaire de chute aval (15) et l'élément de raccord d'écoulement (38) étant sensiblement alignés dans la direction d'écoulement de chute,
caractérisé en ce que au moins l'un parmi l'élément tubulaire de chute amont (10), l'élément tubulaire de chute aval (15), et la section de dévoiement (20; 220, 320), en particulier un élément tubulaire de cette dernière, comprend une surface interne munie de premiers filets hélicoïdaux.Falling section (1; 201; 301) for a flow of liquids or fluids, in particular water in a falling flow direction, comprising an upstream falling tubular element (10), a downstream falling tubular element ( 15), a deflecting section (20; 220,320) between the upstream tubular downcomer and the downstream tubular downcomer, a connection with a downcomer (38; 338) opening into the downcomer. tubular element of downstream fall,
the upstream fall tubular member (10), the downstream fall tubular member (15) and the flow connection member (38) being substantially aligned in the falling flow direction,
characterized in that at least one of the upstream downstream tubular element (10), the downstream tubular downcomer (15), and the outflow section (20; 220, 320), in particular a tubular element. of the latter comprises an inner surface provided with first helical threads. Section de chute selon la revendication précédente, dans laquelle l'élément tubulaire de chute amont (10), l'élément tubulaire de chute aval (15), l'élément de raccord d'écoulement (38; 238, 338) et la section de dévoiement (20; 200, 300) en particulier l'élément tubulaire de cette dernière, sont sensiblement alignés dans un plan parallèle à la direction d'écoulement de chute.Falling section according to the preceding claim, wherein the upstream downstream tubular element (10), the downstream downstream tubular element (15), the flow connection element (38; 238, 338) and the cross section (20; 200, 300), in particular the tubular element thereof, are substantially aligned in a plane parallel to the direction of flow of fall. Section de chute selon l'une des revendications précédentes, dans laquelle la section de dévoiement (20; 220, 320) comprend une première partie de dévoiement (22; 222, 322) dans le prolongement de l'élément tubulaire de chute amont (10) et inclinée par rapport à l'élément tubulaire de chute amont, une deuxième partie de dévoiement (24; 224, 324) dans le prolongement de la première partie de dévoiement (22; 222, 322) et sensiblement parallèle à la direction d'écoulement de chute, et une troisième partie de dévoiement (26; 226, 326) en aval de la deuxième partie de dévoiement (24; 224, 324) et débouchant dans l'élément tubulaire de chute aval (15).Falling section according to one of the preceding claims, wherein the deflection section (20; 220, 320) comprises a first deflection portion (22; 222, 322) in the extension of the upstream tubular fall element (10; ) and inclined with respect to the upstream falling tubular element, a second deflection portion (24; 224; 324) extending from the first deflection portion (22; 222; 322) and substantially parallel to the direction of falling flow, and a third deflection portion (26; 226,326) downstream of the second deflection portion (24; 224,324) and opening into the downstream tubular downcomer (15). Section de chute selon la revendication 3, dans laquelle la deuxième partie de dévoiement (224) comprend une surface interne munie de deuxièmes filets hélicoïdaux (261), en particulier la deuxième partie de dévoiement (224) étant cylindrique.The chute section of claim 3, wherein the second deflection portion (224) comprises an inner surface provided with second helical threads (261), in particular the second deflection portion (224) being cylindrical. Section de chute selon la revendication 4, dans laquelle l'élément de raccord d'écoulement (338) a une surface interne munie de troisièmes filets hélicoïdaux (361).The chute section of claim 4, wherein the flow coupling member (338) has an inner surface with third helical threads (361). Section de chute selon la revendication précédente, dans laquelle au moins deux parmi les premiers filets hélicoïdaux (61), les deuxièmes filets hélicoïdaux (261) et les troisièmes filets hélicoïdaux (361) présente le même pas de filet et/ou la même orientation de filet.Falling section according to the preceding claim, wherein at least two of the first helical threads (61), the second helical threads (261) and the third helical threads (361) have the same thread pitch and / or the same thread orientation. net. Section de chute selon l'une des revendications 5 à 6, dans laquelle au moins deux parmi les premiers filets hélicoïdaux (61), les deuxièmes filets hélicoïdaux (261) et les troisièmes filets hélicoïdaux (361) présentent le même espacement entre filets.Falling section according to one of claims 5 to 6, wherein at least two of the first helical threads (61), the second helical threads (261) and the third helical threads (361) have the same spacing between threads. Section de chute selon l'une des revendications précédentes, dans laquelle au moins une partie des premiers filets hélicoïdaux (61), deuxièmes filets hélicoïdaux (261) et troisièmes filets hélicoïdaux (361) présente une inclinaison par rapport à une direction de l'élément tubulaire présentant lesdits filets hélicoïdaux (61, 261, 361) d'environ 20°, en particulier formant un angle de moins de 30° avec les angles présents dans le dévoiement par rapport à la verticale.Drop section according to one of the preceding claims, wherein at least a portion of the first helical threads (61), second helical threads (261) and third helical threads (361) have an inclination with respect to a direction of the element. tubular having said helical threads (61, 261, 361) of about 20 °, in particular forming an angle of less than 30 ° with the angles present in the deviation from the vertical. Section de chute selon la revendication 3 à 8, dans laquelle la troisième partie de dévoiement (26; 226, 326) forme un angle avec l'élément de raccord d'écoulement (38) compris dans la gamme de 20 à 40°, en particulier 30°.The chute section of claim 3 to 8, wherein the third deflection portion (26; 226,326) is at an angle to the flow coupling member (38) in the range of 20 to 40 °, in in particular 30 °. Section de chute selon l'une des revendications 3 à 9, dans laquelle la première partie de dévoiement (22; 222, 322) forme un angle avec l'élément tubulaire de chute amont (10) compris dans la gamme de 30 à 60°, en particulier 45°.Drop section according to one of claims 3 to 9, wherein the first deflection portion (22; 222; 322) forms an angle with the upstream tubular downcomer (10) in the range of 30 to 60 °. , in particular 45 °. Section de chute selon l'une des revendications 3 à 10, dans laquelle la première partie de dévoiement (22; 222, 322) forme un angle avec la troisième partie de dévoiement (26; 226 ,326) supérieur à 90°, en particulier la première partie de dévoiement (22; 222, 322) forme un premier angle avec l'élément tubulaire de chute amont et la troisième partie de dévoiement (26; 226 ,326) forme un deuxième angle différent du premier angle avec l'élément tubulaire de chute aval, résultant en un dévoiement asymétrique.Falling section according to one of claims 3 to 10, wherein the first deflection portion (22; 222, 322) forms an angle with the third deflection portion (26; 226, 326) greater than 90 °, in particular the first deflection portion (22; 222, 322) forms a first angle with the upstream fall tubular member and the third offset portion (26; 226; 326) forms a second angle different from the first angle with the tubular member; downstream, resulting in asymmetric deviation. Section de chute selon l'une des revendications précédents, dans laquelle le raccord est un raccord aérateur (30 ; 330) avec un élément de raccord équilibreur de pression (34 ; 334) débouchant dans la section de dévoiement.Falling section according to one of the preceding claims, in which the connection is an aerator connection (30; 330) with a pressure balancing connection element (34; 334) opening into the deflection section. Chute (90) comprenant une section de chute (1) selon l'une des revendications précédentesFall (90) comprising a drop section (1) according to one of the preceding claims
EP17169107.4A 2016-05-04 2017-05-02 Set with slab and drop section Active EP3241951B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1654070A FR3051004B1 (en) 2016-05-04 2016-05-04 FALL SECTION

Publications (2)

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EP3241951A1 true EP3241951A1 (en) 2017-11-08
EP3241951B1 EP3241951B1 (en) 2020-09-16

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EP (1) EP3241951B1 (en)
FR (1) FR3051004B1 (en)
MA (1) MA42635B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115059151A (en) * 2022-08-04 2022-09-16 基准方中建筑设计股份有限公司 Gradually-expanding type vertical pipe, trap water replenishing device and trap water replenishing system
WO2023186411A1 (en) * 2022-03-31 2023-10-05 Geberit International Ag Sanitary assembly

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US3848275A (en) * 1973-07-23 1974-11-19 E Dumas Standpipe vent system and fitting for multi-story buildings
FR2265029A1 (en) * 1974-03-19 1975-10-17 Ducournau Andre Low noise vertical discharge pipe for liquids - has inner helical baffle at inlet connection section
GB2145129A (en) * 1983-06-29 1985-03-20 Kubota Ltd Stack pipe assembly
WO1997011304A1 (en) * 1995-09-20 1997-03-27 Etex S.A. Tubular member for unitary acoustic sanitary ducts in a building
CA2563969A1 (en) * 2006-09-22 2008-03-22 Winston R. Mackelvie Flow enhancer
EP2447424A1 (en) 2010-10-27 2012-05-02 Geberit International AG Pipe branch section for downpipes
EP2525002A1 (en) * 2011-05-19 2012-11-21 Geberit International AG Pipe branch section for downpipes

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Publication number Priority date Publication date Assignee Title
US3848275A (en) * 1973-07-23 1974-11-19 E Dumas Standpipe vent system and fitting for multi-story buildings
FR2265029A1 (en) * 1974-03-19 1975-10-17 Ducournau Andre Low noise vertical discharge pipe for liquids - has inner helical baffle at inlet connection section
GB2145129A (en) * 1983-06-29 1985-03-20 Kubota Ltd Stack pipe assembly
WO1997011304A1 (en) * 1995-09-20 1997-03-27 Etex S.A. Tubular member for unitary acoustic sanitary ducts in a building
CA2563969A1 (en) * 2006-09-22 2008-03-22 Winston R. Mackelvie Flow enhancer
EP2447424A1 (en) 2010-10-27 2012-05-02 Geberit International AG Pipe branch section for downpipes
EP2525002A1 (en) * 2011-05-19 2012-11-21 Geberit International AG Pipe branch section for downpipes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023186411A1 (en) * 2022-03-31 2023-10-05 Geberit International Ag Sanitary assembly
CN115059151A (en) * 2022-08-04 2022-09-16 基准方中建筑设计股份有限公司 Gradually-expanding type vertical pipe, trap water replenishing device and trap water replenishing system

Also Published As

Publication number Publication date
FR3051004B1 (en) 2021-04-23
MA42635B1 (en) 2020-11-30
FR3051004A1 (en) 2017-11-10
EP3241951B1 (en) 2020-09-16

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