(19)
(11) EP 2 993 274 B1

(12) EUROPEAN PATENT SPECIFICATION

(45) Mention of the grant of the patent:
05.04.2017 Bulletin 2017/14

(21) Application number: 15183978.4

(22) Date of filing: 04.09.2015
(51) International Patent Classification (IPC): 
E03D 11/08(2006.01)
E03D 11/13(2006.01)

(54)

WC WITH LOW NOISE

GERÄUSCHARMES WC

WC AVEC UN FAIBLE BRUIT


(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30) Priority: 05.09.2014 IT RM20140503

(43) Date of publication of application:
09.03.2016 Bulletin 2016/10

(73) Proprietors:
  • Ceramica Catalano S.p.A.
    Fabrica Di Roma (VT) (IT)
  • Gruppo Sanitari Italia - G.S.I S.p.A.
    Gallese (VT) (IT)

(72) Inventor:
  • Rossi, Mario
    01033 Civita Castellana (IT)

(74) Representative: Bosman, Cesare et al
Studio Torta S.p.A. Via Viotti, 9
10121 Torino
10121 Torino (IT)


(56) References cited: : 
EP-A1- 2 604 761
GB-A- 2 431 937
FR-A1- 2 744 744
US-A- 5 926 863
   
       
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).


    Description


    [0001] The present invention relates to a WC with improved noise characteristics. Examples of WC'S can be found in GB 2431937A and EP 2604761 A1.

    [0002] One of the most important aspects that research in the field of sanitary fixtures has focused on is that relating to noise.

    [0003] Over time said aspect has become more and more critical in the choice of buying sanitary fixtures.

    [0004] For a more complete understanding of the problem relating to noise, one may contemplate hotel accommodations, where substantially the number of bathrooms is comparable with that of the rooms. It is evident that in these cases the ability to lower the bathroom noise level would contribute significantly to a greater quality of the accommodation itself.

    [0005] The sanitary fixture that is found to have the greatest noise problem is the WC. In fact, the water which is released inside the WC for discharging operations usually produces a particularly loud and annoying noise.

    [0006] Therefore the need was felt to produce a WC having the technical characteristics for reducing the noise level of the flushing water during discharging operations.

    [0007] Subject of the present invention is a WC, whose essential characteristics are disclosed in claim 1, and whose preferred and/or auxiliary characteristics are set forth in claims 2-10.

    [0008] In the following an example of embodiment is provided purely by way of illustrative and non-limiting example with the aid of the accompanying figures, wherein:

    Figure 1 is a longitudinal section of a WC according to the present invention;

    Figure 1a is an enlargement of a detail of the section of Figure 1;

    Figure 1b is a section along the line I-I of Figure 1a;

    Figure 2 is a section along the line II-II of Figure 1;

    Figure 3 is a section along the line III-III of Figure 2.



    [0009] In Figures 1 and 2 is indicated, as a whole, with 1 a WC according to the present invention.

    [0010] The WC 1 comprises a single piece structure 2 made of ceramic defining a basin 3, a discharge duct 4 connected to a bottom portion of the basin 3, and a supply duct 5 of the flushing water which communicates with the basin 3 through only one flushing opening 6. The duct is obtained inside a rear portion 2a of the structure 2 so as to be connected to a water network.

    [0011] The duct 5 extends along a longitudinal axis X and is defined in sequence by an inlet portion 7 where the connection with the water network is obtained and having a standard size regulated by specific requirements, by a flowing portion 8, and by an outlet portion 9 on a lateral wall 10 in which the flushing opening 6 is obtained.

    [0012] As made evident from Figures 1 and 1b, the outlet portion 9 has a flow-through section equal to about half of the flow-through section of the flowing portion 8. This means that from the flowing portion 8 to the outlet portion 9 there is a narrowing of the flow-through section equal to about a half.

    [0013] Preferably, the flow-through section of the outlet portion 9 has an area ranging from 35 to 65%, more preferably ranging from 45 to 55%, of the area of the flow-through section of the flowing portion 8.

    [0014] The flushing opening 6 is obtained on the lateral wall 10 of the outlet portion 9 and has a flow-through section with an area equal to approximately 35% of the area of the flow-through section of the outlet portion 9. The flow-through section of the opening 6 has an area ranging from 20 to 50%, preferably ranging from 30 to 40%, of the area of the flow-through section of the outlet portion 9.

    [0015] In particular, as made apparent from Figure 1, the outlet portion 9 comprises a bottom wall 11 inclined upwards with respect to the axis X. The inclined position of the bottom wall 11 causes the outlet portion 9 to extend beyond the flushing opening 6. In this way a diminished load of the flow of the flushing water occurs which further facilitates the effectiveness of the present invention.

    [0016] As made evident from Figure 3, the basin 3 is defined by an asymmetric wall 12 that joins inferiorly with the discharge duct 4. In particular, following the flow of water as indicated by the arrows in Figure 2, the wall 12 is defined by a first lateral portion 13, by a front portion 14, by a second lateral portion 15 and by a bottom portion 16. The flushing opening 6 is obtained at the bottom portion 16 and faces the first lateral portion 13. The asymmetry of the wall 12 is due to the different conformation of its two lateral portions 13 and 15. Both lateral portions 13 and 15 comprise a concave upper part 13a and 15a, followed by a substantially vertical lower part 13b and 15b which joins inferiorly to the discharge duct 4.

    [0017] Both concave upper parts 13a and 15a have a variable bending radius. Here and hereinafter the concept that the concave upper part 13a of the first lateral portion 13 has a greater depth concavity than the concave upper part 15a of the second lateral portion 15 means that the smallest bending radius of the concave upper part 13a is less than the smallest bending radius of the concave upper part 15a.

    [0018] The concave upper part 13a has a vertical extension less than the concave upper part 15a and, consequently, has a substantially vertical lower part 13b greater than that of the lateral portion 15.

    [0019] In particular, the concave upper part 13a is defined by a variation of its bending radius which, from the top to the bottom, assumes in sequence the values 64 mm, 30.8 mm and 213.9 mm; while, the concave upper part 15a is defined by a variation of its bending radius, which, from the top to the bottom, assumes in sequence the values 64 mm, 37.2 mm and 103.7 mm.

    [0020] As is apparent from Figure 1, the front portion 14 of the lateral wall 12 has a more pronounced concavity with respect to the WC of the prior art and is defined by a variation of the bending radius which, from the top to the bottom, assumes in sequence the values 48.1 mm, 69.1 mm and 232.9 mm.

    [0021] The values of the above radii of curvature are expressed in mm.

    [0022] As can be seen from Figures 1 and 3, the lateral wall 12 is rimless, thus ensuring greater hygiene. In fact, a rimless lateral wall guarantees the absence of recesses difficult to reach during cleaning operations and therefore can represent possible locations of bacterial proliferation.

    [0023] The presence of a single lateral flushing opening 6 and the particular shape of the two lateral portions 13a, 15a of the lateral wall 12 allow to significantly lessen the noise level caused by the flushing water during discharge. The effectiveness of the flow of the flushing water in terms of directionality and pressure, however, is made possible by conformational features of the supply duct 5 of the discharge water.

    [0024] Finally, the shape of the front portion 14 of the lateral wall 12 further ensures the proper flow of the discharge water and consequential low noise.

    [0025] As indicated by the arrows of Figure 2, the water produced from the flushing opening 6 generates a spiral flow that flows along the lateral wall 12. The spiral path of the flushing water flow ensures, therefore, that along the path itself there is no impact between different water portions. In fact, the flushing water first passes through the concave upper part 13a, then the concavity of the front portion 14 and, once crossed the concave upper part 15a, is located in a position lower than the water flowing along the concave upper part 13a. In this way, therefore, the water leaving the concave upper part 15a, instead of encountering the water flowing along the concave upper part 13a, flows until impact against the substantially vertical lower part 13b, then continues towards the discharge duct 4.

    [0026] The present invention offers the great advantage of being able to ensure a low noise level of the flushing water during the discharge operation, along with a high efficiency in the cleaning of the inner walls of the WC.

    [0027] Furthermore, when the characteristics are also associated with the absence of a rim of the WC, the advantage concerning a high level of hygiene is also accomplished.


    Claims

    1. A WC (1) comprising a structure (2) defining at least one basin (3) delimited by an asymmetrical lateral wall (12) and a flushing water supply duct (5) obtained in a rear portion (2a) of the structure (2) to be connected to a water network, extending along an axis X and communicating with said basin (3) so as to allow the flushing water to flow;
    said WC being characterized in that said flushing water supply duct (5) is defined by at least a flowing portion (8) and by an outlet portion (9) directly connected to said flowing portion, the outlet portion (9) comprising a lateral wall (10) in which only one flushing opening (6) for the flowing of water from the duct (5) to the basin (3) is obtained; said opening (6) having a flow-through section with an area ranging from 20 to 50% of the area of the flow-through section of the outlet portion (9) and said outlet portion (9) having a flow-through section with an area ranging from 35 to 65% of the area of the flow-through section of said flowing portion (8);
    and in that said lateral wall (12) defining the basin (3) has an asymmetrical shape and comprises:

    - a first lateral portion (13), which is faced by said flushing opening (6) and comprises:

    a concave upper part (13a) and a substantially vertical lower part (13b), and

    - a second lateral portion (15) facing the first lateral portion (13) and arranged in front of it and comprising:

    a concave upper part (15a) having a larger vertical extension than the concave upper part (13a) of the first lateral portion (13) and a substantially vertical lower part (15b) with smaller dimensions than the substantially vertical lower part (13b) of the first lateral portion (13).


     
    2. The WC according to claim 1, characterized in that said opening (6) has a flow-through section with an area ranging from 30 to 40% of the area of the flow-through section of the outlet portion (9).
     
    3. The WC according to claim 1 or 2, characterized in that the outlet portion (9) has a flow-through section with an area ranging from 45 to 55% of the area of the flow-through section of said flowing portion (8).
     
    4. The WC according to any of the preceding claims, characterized in that said outlet portion (9) extends beyond said flushing opening (6).
     
    5. The WC according to claim 4, characterized in that the outlet portion (9) comprises a bottom wall (11), which is inclined upwards with respect to the axis X.
     
    6. The WC according to any of the preceding claims, characterized in that the concave upper part (13a) of the first lateral portion (13) has a greater depth concavity than the concave upper part (15a) of the second lateral portion (15).
     
    7. The WC according to claim 6, characterized in that the concave upper part (13a) of the first lateral portion (13) is defined by a variation of its bending radius, which, from the top to the bottom, assumes in sequence the values 64 mm, 30.8 mm and 213.9 mm; and in that the concave upper part (15a) of the second lateral portion (15) is defined by a variation of its bending radius, which, from the top to the bottom, assumes in sequence the values 64 mm, 37.2 mm and 103, 7 mm.
     
    8. WC according to any of the preceding claims, characterized in that the lateral wall (12) comprises a front portion (14) which is defined by a variation of its bending radius, which, from the top to the bottom, assumes, in sequence, the values 48.1 mm, 69.1 mm and 232.9 mm.
     
    9. The WC according to any of the preceding claims, characterized in that said lateral wall (12) is rimless.
     
    10. The WC according to any of the preceding claims, characterized in that said structure (2) is one single piece made of ceramic.
     


    Ansprüche

    1. WC (1) mit einem Aufbau (2), der mindestens ein Becken (3) definiert, das von einer asymmetrischen Seitenwand (12) begrenzt wird, und mit einer Spülwasserzufuhrleitung (5), die in einem hinteren Teil (2a) des Aufbaus (2) enthalten ist, und an ein Wassernetz anzuschließen ist, wobei die Spülwasserzufuhrleitung (5) sich entlang einer Achse X erstreckt und mit dem Becken (3) in Verbindung steht, um es dem Spülwasser zu ermöglichen zu fließen,
    wobei das WC dadurch gekennzeichnet ist, dass die Spülwasserzufuhrleitung (5) definiert ist durch mindestens einen Förderabschnitt (8) und durch einen Auslassabschnitt (9), der direkt mit dem Förderabschnitt verbunden ist, wobei der Auslassabschnitt (9) eine Seitenwand (10) aufweist, in der nur eine Spülöffnung (6) zum Fördern von Wasser aus der Leitung (5) in das Becken (3) enthalten ist, wobei die Öffnung (6) einen Durchflussquerschnitt aufweist mit einer Fläche im Bereich von 20 bis 50% der Fläche des Durchflussquerschnitts des Auslassabschnitts (9), und wobei der Auslassabschnitt (9) einen Durchflussquerschnitt mit einer Fläche im Bereich von 35 bis 65% der Fläche des Durchflussquerschnitts des Förderabschnitts (8) aufweist,
    und dadurch, dass die das Becken (3) definierende Seitenwand (12) eine asymmetrische Form hat und aufweist:

    - einen ersten seitlichen Bereich (13), dem die Spülöffnung (6) gegenüberliegt, und der aufweist:

    einen konkaven oberen Teil (13a) und einen im Wesentlichen senkrechten unteren Teil (13b), und

    - einen zweiten seitlichen Bereich (15), der dem ersten seitlichen Bereich (13) gegenüberliegt und davor liegt und aufweist:

    einen konkaven oberen Teil (15a) mit einer größeren senkrechten Erstreckung als der konkave obere Teil (13a) des ersten seitlichen Bereichs (13) und einen im Wesentlichen senkrechten unteren Teil (15b) mit kleineren Abmessungen als der im Wesentlichen senkrechte untere Teil (13b) des ersten seitlichen Bereichs (13).


     
    2. WC nach Anspruch 1, dadurch gekennzeichnet, dass die Öffnung (6) einen Durchflussquerschnitt mit einer Fläche im Bereich von 30 bis 40% der Fläche des Durchflussquerschnitts des Auslassabschnitts (9) aufweist.
     
    3. WC nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Auslassabschnitt (9) einen Durchflussquerschnitt mit einer Fläche im Bereich von 45 bis 55% der Fläche des Durchflussbereichs des Förderabschnitts (8) aufweist.
     
    4. WC nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der Auslassabschnitt (9) sich über die Spülöffnung (6) hinaus erstreckt.
     
    5. WC nach Anspruch 4, dadurch gekennzeichnet, dass der Auslassabschnitt (9) eine Bodenwand (11) aufweist, die bezüglich der X-Achse nach oben geneigt ist.
     
    6. WC nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der konkave obere Teil (13a) des ersten seitlichen Bereichs (13) eine größere Höhlungstiefe als der konkave obere Teil (15a) des zweiten seitlichen Bereichs (15) aufweist.
     
    7. WC nach Anspruch 6, dadurch gekennzeichnet, dass der konkave obere Teil (13a) des ersten seitlichen Bereichs (13) definiert ist durch eine Änderung seines Krümmungsradius, der von oben nach unten die Werte 64 mm, 30,8 mm und 213,9 mm in dieser Reihenfolge annimmt, und dadurch, dass der konkave obere Teil (15a) des zweiten seitlichen Bereichs (15) definiert ist durch eine Änderung seines Krümmungsradius, der von oben nach unten die Werte 64 mm, 37,2 mm und 103,7 mm in dieser Reihenfolge annimmt.
     
    8. WC nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Seitenwand (12) einen Stirnbereich (14) aufweist, der definiert ist durch eine Änderung seines Krümmungsradius, der von oben nach unten die Werte 48,1 mm, 69,1 mm und 232,9 mm in dieser Reihenfolge annimmt.
     
    9. WC nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Seitenwand (12) randlos ist.
     
    10. WC nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der Aufbau (2) einstückig aus Keramik gefertigt ist.
     


    Revendications

    1. WC (1) comprenant une structure (2) définissant au moins un bassin (3) délimité par une paroi latérale asymétrique (12) et un conduit d'alimentation en eau de rinçage (5) prévu dans une portion arrière (2a) de la structure (2) à connecter à un réseau d'alimentation en eau, s'étendant le long d'un axe X et communiquant avec ledit bassin (3) de manière à permettre à l'eau de rinçage de s'écouler ;
    ledit WC étant caractérisé en ce que ledit conduit d'alimentation en eau de rinçage (5) est défini par au moins une portion d'écoulement (8) et par une portion de sortie (9) connectée directement à ladite portion d'écoulement, la portion de sortie (9) comprenant une paroi latérale (10) dans laquelle est prévue seulement une ouverture de rinçage (6) pour l'écoulement d'eau provenant du conduit (5) vers le bassin (3), ladite ouverture (6) ayant une section d'écoulement avec une zone représentant entre 20 et 50 % de la zone de la section d'écoulement de la portion de sortie (9) et ladite portion de sortie (9) ayant une section d'écoulement avec une zone représentant entre 35 et 65 % de la zone de la section d'écoulement de ladite portion d'écoulement (8) ;
    et en ce que ladite paroi latérale (12) définissant le bassin (3) présente une forme asymétrique et comprend :

    - une première portion latérale (13) en regard de laquelle se trouve ladite ouverture de rinçage (6), et qui comprend :

    une partie supérieure concave (13a) et une partie inférieure sensiblement verticale (13b), et

    - une deuxième portion latérale (15) en regard de la première portion latérale (13) et disposée devant elle, et comprenant :

    une partie supérieure concave (15a) ayant une étendue verticale plus grande que la partie supérieure concave (13a) de la première portion latérale (13) et une partie inférieure sensiblement verticale (15b) ayant de plus petites dimensions que la partie inférieure sensiblement verticale (13b) de la première portion latérale (13).


     
    2. WC selon la revendication 1, caractérisé en ce que ladite ouverture (6) présente une section d'écoulement avec une zone représentant 30 à 40 % de la zone de la section d'écoulement de la portion de sortie (9).
     
    3. WC selon la revendication 1 ou 2, caractérisé en ce que la portion de sortie (9) présente une section d'écoulement avec une zone représentant 45 à 55 % de la zone de la section d'écoulement de ladite portion d'écoulement (8).
     
    4. WC selon l'une quelconque des revendications précédentes, caractérisé en ce que ladite portion de sortie (9) s'étend au-delà de ladite ouverture de rinçage (6).
     
    5. WC selon la revendication 4, caractérisé en ce que la portion de sortie (9) comprend une paroi inférieure (11) qui est inclinée vers le haut par rapport à l'axe X.
     
    6. WC selon l'une quelconque des revendications précédentes, caractérisé en ce que la partie supérieure concave (13a) de la première portion latérale (13) présente une plus grande profondeur de concavité que la partie supérieure concave (15a) de la deuxième portion latérale (15).
     
    7. WC selon la revendication 6, caractérisé en ce que la partie supérieure concave (13a) de la première portion latérale (13) est définie par une variation de son rayon de courbure qui, de haut en bas, adopte, en succession, les valeurs de 64 mm, 30,8 mm et 213,9 mm ; et en ce que la partie supérieure concave (15a) de la deuxième portion latérale (15) est définie par une variation de son rayon de courbure qui, de haut en bas, adopte, en succession, les valeurs de 64 mm, 37,2 mm et 103,7 mm.
     
    8. WC selon l'une quelconque des revendications précédentes, caractérisé en ce que la paroi latérale (12) comprend une portion avant (14) qui est définie par une variation de son rayon de courbure qui, de haut en bas, adopte, en succession, les valeurs de 48,1 mm, 69,1 mm et 232,9 mm.
     
    9. WC selon l'une quelconque des revendications précédentes, caractérisé en ce que ladite paroi latérale (12) est dépourvue de bordure.
     
    10. WC selon l'une quelconque des revendications précédentes, caractérisé en ce que ladite structure (2) est une pièce unique fabriquée en céramique.
     




    Drawing














    Cited references

    REFERENCES CITED IN THE DESCRIPTION



    This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.

    Patent documents cited in the description