WO2009082202A1 - Dispositif d'évacuation de liquide - Google Patents

Dispositif d'évacuation de liquide Download PDF

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Publication number
WO2009082202A1
WO2009082202A1 PCT/NL2008/000286 NL2008000286W WO2009082202A1 WO 2009082202 A1 WO2009082202 A1 WO 2009082202A1 NL 2008000286 W NL2008000286 W NL 2008000286W WO 2009082202 A1 WO2009082202 A1 WO 2009082202A1
Authority
WO
WIPO (PCT)
Prior art keywords
catch tray
drain device
liquid drain
water
opening
Prior art date
Application number
PCT/NL2008/000286
Other languages
English (en)
Inventor
Martinus Franciscus Petrus Joseph Bierings
Original Assignee
Bierings Martinus Franciscus P
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bierings Martinus Franciscus P filed Critical Bierings Martinus Franciscus P
Priority to EP08864445A priority Critical patent/EP2238300A1/fr
Publication of WO2009082202A1 publication Critical patent/WO2009082202A1/fr

Links

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
    • E03C1/28—Odour seals
    • E03C1/294—Odour seals with provisions against loss of water lock

Definitions

  • the present invention relates in general to a device for draining liquid, intended for being mounted under or next to a space that can contain liquid and for connection to a liquid draining network such as a sewer.
  • a liquid draining network such as a sewer.
  • the liquid is water.
  • Draining devices of the above-mentioned type are commonly known, for instance for being mounted under a sink or a bath or a shower cabin, et cetera.
  • the drain is continuously open and that the water to be drained is present in the form of a pool of water that is supplied by a jet of water, such as for instance in a shower cabin or in a sink, but it is also possible that the drain can be closed so that a relatively large volume of water can collect in the space concerned, after which the user can open the drain in order to allow the space to be emptied: these are typical situations of use in the case of a sink or a bath.
  • a disadvantage is then that, in situations when there is no water present in the space concerned, there is an open connection present between this space and the sewer, so that malodorous gases can penetrate the space concerned from the sewer.
  • draining devices are provided with a so-called stench lock.
  • a stench lock in general has a design which makes the water flowing away to make vertical curves.
  • a good example of this is the well-known goose neck under a sink.
  • the principle of operation is based on the fact that, in a curve section having a substantially U-shaped contour, there always will stay behind an amount of water forming a gas barrier.
  • the draining capacity of the draining device should at least be equal to the supply capacity of the shower (i.e. the water jet) . Then a problem occurs at the moment when the supply of water to the draining device stops, for instance because the sink or the bath gets empty or because the user closes the shower tab. Because of the inertia of the water, the water flow does not stop at the moment the water supply stops. As a consequence, water is withdrawn from the stench lock.
  • FIG. 1 This process usually only stops when air enters the draining conduit. The last remainder of water which is then still present in the draining device flows back into the stench lock.
  • FIG. 1 This is schematically illustrated in figures IA-D for a pot-shaped draining device 10 under a sink 1.
  • the discharge device 10 comprises a vertical tube 11 with a free lower edge 12, connected to the bottom of the sink 1.
  • the draining device 10 further comprises a cup 15 with a bottom 16, a side wall 17 and an upper edge 18.
  • the cup 15 has a larger diameter than the tube 11, and is arranged coaxially with the tube 11, wherein the bottom 16 is located at some distance HD below the free lower edge 12 of the tube 11, and wherein the upper edge 18 of the cup 15 is located above the level of the lower edge 12 of the tube 11.
  • the draining device 10 further comprises an outlet tube 20, of which an entrance end 21 is connected to an opening in the side wall 17 of the cup 15, wherein the lower side of this entrance end 21 is located at a higher level than the lower edge 12 of the tube 11; the height difference is indicated by H in the figure, and will hereinafter be indicated as the raise height.
  • the outlet tube 20 is further connected to a sewer, schematically indicated as R.
  • the first part of the outlet tube 20 is usually directed horizontally, after which it makes a transition to a vertical draining tube; for sake of explanation, the outlet tube 20 is provided with a vertical bend 22, so that the outlet tube 20 has a first horizontal part 23 and a second part 24 directed obliquely downwards .
  • Figure IA illustrates a situation in which water flows out of the sink 1. The vertical tube 11 is completely filled, the outlet tube 21 is completely filled, and the cup 15 is filled almost completely. Arrows indicate the flow of the water .
  • Figure IB illustrates the situation that the sink 1 has emptied. The water flow continues; the water in the vertical tube 11 lowers. A negative pressure develops in the highest part 25 of the outlet tube 20.
  • Figure 1C illustrates the situation that the water in the vertical tube 11 has reached the free lower edge 12 of the vertical tube 11.
  • the water flow still continues, and the cup 15 is drawn empty.
  • an air connection develops from the vertical tube 11 to the highest part 25 of the outlet tube 20, and the water flow stops.
  • water still remains in the cup 15 and in the outlet tube 20, which flows back into the cup 15 and collects on the bottom 16 of the cup 15.
  • the design is such that the water 13 remaining behind in the cup 15 has an upper surface 14 of which the level is above the level of the free lower edge 12 of the vertical tube 11.
  • the height difference between the water surface 14 and the free lower edge 12 of the vertical tube 11 will be indicated as stench lock height HS.
  • the height which the water surface 14 achieves will be dependent among other things on the raise height H and the diameter of the cup 15.
  • the vertical distance HD between the cup bottom 16 and the lower edge 12 of the vertical tube 11 may not be too small, since this limits the throughput flow speed and increases the chances on blockings.
  • the raise height H must be larger, causing the overall vertical dimension of the draining device 10 to increase.
  • the available vertical space is limited. In that case it is possible, as sketched in figure 2, that the water surface 14 is below the free lower edge 12 of the vertical tube 11, and a free connection exists with the sewer, as indicated by an arrow 29.
  • FIG. 3 schematically illustrates the build-up of a concrete floor, as applied for instance in apartment buildings.
  • floor as generally indicated by 30, comprises a concrete slab 31, a spreading layer 32 arranged above that, and a finish layer 33.
  • the concrete layer 30 may be poured at the location or may be supplied to the building location as ready for use plates.
  • conduits are arranged on the concrete layer 30, for instance for heating, water supply and water drainage.
  • the spread layer 31 is arranged over the concrete layer 30, in the form of a liquid mortar that hardens, which spread layer 31 covers the said conduits.
  • the finish layer 33 is arranged, for instance tiles.
  • the height of the spread layer 32 typically is about 6 cm.
  • the drain conduit from this shower space as well as the drain device connecting this drain conduit to the floor of the shower cabin therefore have to be arranged in the spread layer 32.
  • a vertical space of 6 cm at the most is available for the drain device.
  • the Dutch patent 1025765 describes a drain device suitable for the application situation as described. For more details, reference is made to this publication.
  • the drain device disclosed in said publication has the shape of an elongate gutter, for instance intended to be arranged along a side edge of the space concerned.
  • the present invention also comprises realizations in the form of such elongate gutter, but the present invention is not restricted to such embodiment: the present invention is also applicable in an drain device implemented as a waste pit to be placed centrally in the space.
  • Figure 4A schematically illustrates the design of the known drain device, generally indicated at 40.
  • the drain device 40 comprises a catch tray 41, with a bottom 42 and side walls 43, of which the upper edge 44 in the application situation will be located at the same level as the upper service 34 (see figure 3) of the floor 30 of the space concerned.
  • This catch tray 41 which is open at the upper side, catches the water flowing away from the floor 30. It is noted that the said known catch tray has an elongate gutter shape.
  • a collection tray 46 is defined, with a bottom 47 and side walls 48.
  • the collection tray bottom 47 is located at a higher level than the catch tray bottom 42.
  • the side walls 48 have an upper edge 49, of which the highest point is located below the level of the upper edge 44 of the catch tray 41; in the view of figure 4A, the lowest point of the upper edge 49 is shown.
  • the collection tray 46 collects the water before it is drained from the catch tray 41.
  • a horizontal drain pipe 50 is connected to a side wall 48 of the collecting tray 46.
  • This drain pipe 50 extends through the corresponding side wall 43 of the catch tray 41, a liquid tight sealing, not shown for sake of simplicity, being arranged between the drain pipe 50 and this catch tray side wall 43.
  • Figure 4B schematically illustrates this in a view from another direction.
  • a vertical space is shown in figures 4A and 4B between the catch tray bottom 42 and the collecting tray bottom 47, but in practice the collecting tray bottom 47 may rest on the catch tray bottom 42.
  • a horizontal space is shown in figure 4B between the catch tray side walls 43 and the collection tray side walls 48, but in practice these side walls 43, 48 may touch each other.
  • the drain tube 50 together with the collecting tray 46 forms the outlet 51 of the drain device, wherein the open upper side of the collecting tray 46 defines the outlet opening 52.
  • the lowest point of the upper edge 49 of the collecting tray 46 therefore defines the lowest point of the outlet opening 52.
  • the outlet 51 may have a different design, and that the most important function of the collecting tray 46 is raising the lowest point of the outlet opening 52 with respect to the lowest point of the drain pipe 50.
  • the drain device 40 further comprises a cap 60 with a closed upper wall 61 and side walls 62 directed downwards from this upper wall.
  • the side walls 62 have a lower edge 63; the highest point of the lower edge 63 is shown in the view of figure 4A. It can clearly be seen from this figure that the highest point of the lower edge 63 of the cap 60 is located at a lower level than the lowest point of the upper edge 49 of the collecting tray 46.
  • the cap 60 is arranged around the collecting tray 46, it is to say that the side walls 62 of the cap 60 are located outside the side walls 48 of the collecting tray 46.
  • the cap 60 may be attached to the collecting tray 46, but may also simply rest loosely thereon.
  • the confined space under the cap 60 forms a stench lock space 101.
  • the trajectory is indicated that the water flowing away will follow through the drain device 40.
  • the principle of operation of the water lock of the drain device 40 is illustrated: the water surface 14 of the water 13 remaining behind in the catch tray 41 has a height approximately equal to the height of the lowest point of the upper edge 49 of the collecting tray side wall 48, and thus higher than the highest point of the lower edge 63 of the cap side wall 62. Then, the trajectory indicated by the arrow P is closed for gases.
  • the water surface 14 of the water 13 remaining behind in the catch tray 41 may in practice be too low, namely lower than the highest point of the lower edge 63 of the cap side wall 62. Then, the trajectory indicated by the arrow P is free for gases, and there is stench annoyance.
  • figure 1A-1D schematically illustrate the operation of a known drain device
  • figure 2 illustrates a problem that may occur in the known drain device
  • figure 3 schematically illustrates the design of a concrete floor
  • figure 4A shows a schematic longitudinal section of a known drain device for being built in a concrete floor
  • figure 4B shows a schematic cross section of this known drain device for being built in a concrete floor
  • figures 5A-5B schematically show variations of embodiments of a drain device according to the present invention
  • figures 6A-6C schematically illustrate the operation of the drain device according to the present invention.
  • FIGs 5A-5C schematically illustrate the principle of operation of a drain device 100 improved according to the present invention.
  • the design may for the largest part be identical to the known device explained in the above.
  • Characterizing for the invention is a buffer chamber 110 of which the interior communicates with the interior of the catch tray 41, via a communication opening 111.
  • the buffer chamber 110 may be arranged adjacent the catch tray 41 (figure 5A), but may also be arranged within the catch tray 41 (figure 5B) .
  • Figure 5C illustrates a variation in which the buffer chamber 110 is a partition of the catch tray 41, wherein the proper catch tray 41 by a separation wall 120 is subdivided in a buffer chamber 110 and a main chamber 130, wherein the collecting tray 47 is arranged in the main chamber 130 of the catch tray 41.
  • figure 5C has as advantages, among other things, that this can be realized in a simple manner, even in the case of already existing drain devices, wherein the separation wall 120 may be attached to or may be integral part of the cap 60, as shown. It is noted, in that case, that the separation wall 120 does not need to have a liquid tight connection to the side walls of the catch tray
  • the communication opening 111 should be dimensioned such that it extends to the lower side of the catch tray 41 or the main chamber, respectively, and should have a sufficiently large flow resistance.
  • the communication opening 111 may simply be defined by the separation wall 120 not completely connecting to the bottom of the catch tray 41, wherein it offers an advantage if the lower edge of the separation wall 120 is provided with a recess 121.
  • the buffer chamber 110 may be open at its upper side, so that the buffer chamber 110 may receive water from outside, in the same manner as described with reference to the catch tray 41, but it is also possible that the buffer chamber 110 only receives water from the catch tray 41 or the main chamber 130, respectively.
  • Figure 5C seems to suggest that a confined chamber 132 is defined between the cap side wall 62 and the separation wall 120, with a closed upper wall 131. That is not necessary: the upper wall of the space that is enclosed by the cap side wall 62 and the separation wall 120 may be provided with openings, and may even be entirely absent, as can be seen from the perspective view of an embodiment of the cap 60 shown in figure 5D.
  • a water supply for instance because a shower is being used.
  • the supplied water is drained through the drain device, and the buffer chamber 110 and main chamber 130 are both filled with water.
  • the buffer chamber 110 slowly empties into the main chamber 130 via the communication opening 111, whereby the water level in the main chamber 130 rises.
  • the speed of this process depends on the flow resistance of the communication opening 111.
  • the process stops when the raising water level in the main chamber 130 has become equal to the dropping water level in the buffer chamber 110, see figure 6C.
  • the volume of the buffer chamber 110 is chosen in relation to the volume of the main chamber 130 such that the water level in the main chamber 130 is now higher than the highest point of the lower edge 63 of the cap side wall 62, so that the stench lock is operational with certainty, as will be clear to a person skilled in the art.
  • the present invention provides a liquid drain device 100, intended for connection to a liquid drain network such as a sewer, comprising a catch tray 41, a closed stench lock space 101 with an inlet opening communicating with the catch tray 41 and an outlet opening 52 located at a higher level than the inlet opening, and an outlet 51 connected to the outlet opening 52 of the stench lock space 101.
  • the drain device further has a buffer chamber 110 that communicates with the catch tray 41 via a communication opening 111.
  • the communication opening 111 has a relatively large flow resistance.

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  • Engineering & Computer Science (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)
  • Sink And Installation For Waste Water (AREA)

Abstract

Un dispositif d'évacuation de liquide (100), destiné à être raccordé à un réseau d'évacuation de liquide tel qu'un égout, comprend un bac de récupération (41), un espace fermé de confinement des mauvaises odeurs (101) muni d'une entrée qui communique avec le bac de récupération (41) et d'une sortie (52) située à un niveau plus élevé que l'entrée, et une évacuation (51) raccordée à la sortie (52) de l'espace de confinement des mauvaises odeurs (101). Selon l'invention, le dispositif d'évacuation possède en outre une chambre tampon qui communique avec le bac de récupération (41) via une ouverture de communication (111). L'ouverture de communication (111) possède une résistance à l'écoulement relativement importante. Ainsi, même en cas de faible hauteur de construction du dispositif d'évacuation, il est impossible que l'espace de confinement des mauvaises odeurs (101) soit vidé de manière excessive, car le niveau de liquide dans l'espace de confinement des mauvaises odeurs (101) est lentement réalimenté par la chambre tampon (110).
PCT/NL2008/000286 2007-12-21 2008-12-22 Dispositif d'évacuation de liquide WO2009082202A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08864445A EP2238300A1 (fr) 2007-12-21 2008-12-22 Dispositif d'evacuation de liquide

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1034858 2007-12-21
NL1034858A NL1034858C1 (nl) 2007-12-21 2007-12-21 Vloeistof-afvoerinrichting.

Publications (1)

Publication Number Publication Date
WO2009082202A1 true WO2009082202A1 (fr) 2009-07-02

Family

ID=40668235

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2008/000286 WO2009082202A1 (fr) 2007-12-21 2008-12-22 Dispositif d'évacuation de liquide

Country Status (3)

Country Link
EP (1) EP2238300A1 (fr)
NL (1) NL1034858C1 (fr)
WO (1) WO2009082202A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1771570A (en) * 1930-04-25 1930-07-29 Hymen A Blanchard Laundry tray
FR1241422A (fr) * 1959-11-20 1960-09-16 Chantier Et Du Appareil à siphon intercepteur combiné pour plusieurs tuyauteries d'évacuation d'eaux
GB1444419A (en) * 1972-08-28 1976-07-28 Ekstrom L Drain traps
FR2474079A1 (fr) * 1980-01-18 1981-07-24 Passavant Werke Siphon inodore pour ecoulements, conduites de drainage ou similaires

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1771570A (en) * 1930-04-25 1930-07-29 Hymen A Blanchard Laundry tray
FR1241422A (fr) * 1959-11-20 1960-09-16 Chantier Et Du Appareil à siphon intercepteur combiné pour plusieurs tuyauteries d'évacuation d'eaux
GB1444419A (en) * 1972-08-28 1976-07-28 Ekstrom L Drain traps
FR2474079A1 (fr) * 1980-01-18 1981-07-24 Passavant Werke Siphon inodore pour ecoulements, conduites de drainage ou similaires

Also Published As

Publication number Publication date
EP2238300A1 (fr) 2010-10-13
NL1034858C1 (nl) 2009-06-23

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