EP3199715A2 - Overflow for a basin, in particular rinsing basin - Google Patents

Abstract

It proposes an overflow for a sink, with at least one inlet opening (13), which is intended for installation on a basin or an overflow recess or a separate spout of the sink, and with an outlet opening for mounting on a drain or vent valve of the sink or is arranged between the inlet opening (13) and outlet opening a flow channel for a fluid, characterized in that in the flow channel at least a portion (20.1-20.4) is provided, in which the flow channel has a substantially circular cross-section ,

Description

The invention relates to an overflow for a sink according to the preamble of claim 1, with at least one inlet opening, which is intended for mounting on a sink of the sink or on an overflow well or a separate spout, and with an outlet opening for mounting on a Drain or vent valve of the basin or the sink is determined, wherein between the inlet opening and outlet opening a flow channel for a fluid or water is arranged.

The invention also relates to a sink with at least one overflow, which sink comprises an opening in a side wall of a sink or an opening in a horizontal surface of the sink, preferably in the region of an overflow well or a separate spout, which opening fluidly with an overflow Drain of the sink is connected, according to the preamble of claim 13.

Furthermore, the invention relates to a retrofit element for such a sink with overflow, which retrofit element is adapted to be fitted into the existing overflow of the sink.

Rinsing known type, especially kitchen sinks, regularly have an overflow, as defined above, so that at a closure of the actual rinse cycle excess water from the sink or an overflow tray can run when the water level has reached a certain level or if water in the overflow trough or reaches the spout, eg from a drainer of the sink. This should avoid flooding and corresponding damage.

In the past, it has sometimes proved difficult to ensure the proper function of the overflow, which must regularly be able to drain a relatively large amount of water of up to 12 l / min from the sink. For example, elaborate and correspondingly costly vents for the overflow have been provided for this purpose, so that this can fulfill its security function at any time without restriction. In particular, in the drainage of overflow wells or separate spouts has been shown that the necessary for proper functioning dynamic pressure is difficult to achieve.

The invention has for its object to provide an improved overflow in a simple and cost-effective manner, so that from the basin and / or the overflow trough or the separate spout overflowing water can be optimally and safely dissipated. Preferably, this solution should be retrofitted even with existing sinks without major construction effort (retrofitted).

The object is achieved by an overflow with the features of claim 1, by a sink with the features of claim 13 and by a retrofit with the features of claim 14. Advantageous developments of the respective subject invention are defined in the corresponding subclaims.

According to the invention, an overflow for a sink, preferably a kitchen sink with at least one sink and an overflow well or a separate spout, with at least one inlet opening, which is intended for mounting on the basin or on the overflow well or the separate spout, and with an outlet opening , which is intended for mounting on a drain or vent valve of the sink or the basin, wherein between the inlet opening and outlet opening a flow channel for a fluid is arranged, characterized in that in the flow channel at least a portion (flow channel section) is provided in the flow channel has a substantially circular cross-section.

The overflow may in particular also have two or more inlet openings, one of which is present on the basin and another on the overflow recess or the separate spout or a further basin if so mounted or mountable. In addition, the realization of several separate inventive overflows is possible, for example, for each sink or sink sink and overflow trough or spout.

According to another aspect of the invention, a sink according to the invention with at least one overflow, which sink comprises an opening in a side wall of a sink or an opening in a horizontal surface of the sink, preferably in the region of an overflow well or a separate spout, which opening via a Overflow fluidly connected to a drain of the sink, characterized in that the sink has an overflow according to the invention or a further development thereof.

Furthermore, the invention provides a retrofit element for a sink with overflow, which sink comprises an opening in a side wall of a sink or an opening in a horizontal surface of the sink, preferably in the region of an overflow trough or a separate spout, which opening fluidly with the overflow an outlet of the sink is connected, which retrofit element is adapted to be fitted into the overflow, wherein an outer contour of the retrofit element substantially corresponds to an inner contour of the overflow in a region, and wherein the retrofit element has at least one opening, the inner contour of a substantially has circular cross-section.

According to the invention, it is therefore provided that at least one section is provided in the flow channel defined between the at least one inlet opening and the outlet opening of the overflow, in which the flow channel has a substantially circular cross section, even if the flow channel itself - which is the rule - a thereof has a different cross-sectional geometry. Said flow channel section of circular cross-section, as fluid drains through the weir, provides vortex formation similar to that of an upturned bottle when set in motion about its longitudinal axis. As a result, there is less jammed air in the system, and drainage of fluid through the overflow is improved. This has a particularly beneficial effect, especially with overflow wells and separate spouts, because a back pressure can not really build up in this arrangement.

In a further development of the overflow according to the invention, it can be provided that the flow channel has a constant cross section in the section, which can have a positive effect on the vortex formation. This can apply to at least a major part of the mentioned section.

Alternatively or additionally, it may be provided that the flow channel has at least one, for example conical, taper in its cross section in the section, viewed in the flow direction of the fluid. This may for example be the case in the region of the inlet opening. Furthermore, the flow channel in the section can also have an extension of its cross section, preferably in the region or in the direction of the outlet opening.

In order to further optimize the aforementioned vortex formation, another development of the overflow according to the invention is characterized in that the section has a certain length L, which may be numerically linked to a diameter D of the section. The following may hold: L = f · D. The factor f may be between about 2 and about 5, and in turn may depend on the diameter D, f = f (D).

As particularly advantageous for the flow behavior in the overflow has been found, if in the flow channel a plurality of said sections are arranged in parallel.

In order to allow a sufficient overflow of up to 12 l / min, another embodiment of the overflow according to the invention provides that a sum of the cross sections of the sections, if several such sections are present, or the cross sections of the one existing section in the range of about 175 mm ² , most preferably between about 150 mm ² and about 200 mm ² .

In order to be able to adapt a component geometry of the overflow as flexibly as possible, another development of the overflow according to the invention provides that the (several) sections are arranged next to one another, on a line, in the manner of a triangle, offset in zigzag or in another relative position to one another , preferably in each case based on the location of their centers.

Furthermore, it may be advantageous if the (multiple) sections are formed substantially identical to each other, but without the invention being limited thereto.

The at least one section or at least one of the plurality of sections may be arranged in the region of the inlet opening of the overflow, for example in the region of a so-called overflow head. The overflow head is that part of the overflow which is physically mounted directly in the region of an overflow opening of the sink or of the sink at this or on this. The same applies to the inlet opening in the region of an overflow trough or a separate spout.

Alternatively or additionally, however, it can be provided that the at least one section or one of the several sections is arranged in the region of the outlet opening of the overflow, that is to say rather in the direction of the rinsing outlet.

In principle, however, the circular flow channel section can also be arranged at any other point of the overflow or the overflow flow channel. Accordingly, another development of the overflow according to the invention provides that the at least one section or at least one of the plurality of sections is arranged in the region of an elbow of the flow channel, which angle piece a first, when mounted vertical portion of the flow channel in a second, horizontal in assembly section the flow channel transferred. In this case, the at least one flow channel section may be arranged in the region of the first section (ie vertically) and / or in the region of the second section (ie horizontally).

With regard to the retrofit element according to the invention, it has already been pointed out that this is designed to be fitted into an existing overflow. In this case - as already stated - an outer contour of the retrofit element substantially correspond to an inner contour of the overflow in a region. In this way, the retrofit element can be used inside, as a kind of use, in an existing overflow. This can basically be done at any point of the overflow, so for example in the overflow head. However, the above mentioned can be Overflow head, if this includes the said circular flow channel section, even consider themselves as a retrofit element, because he can replace an existing overflow head of an existing overflow. The same applies to the addressed angle piece or angle part or any other portion of an existing overflow flow channel: this can be retrofitted according to the invention by being exchanged for a corresponding part, which has at least one circular flow channel section. Accordingly, the retrofit element then forms at least a partial section or segment of the overflow flow channel.

In this way, virtually all existing overflows can be retrofitted in a simple and cost-effective manner in terms of flow according to the present invention.

Figur 1

zeigt schematisch, teilweise im Schnitt, eine erfindungsgemäße Spüle mit einem erfindungsgemäßen Überlauf;

Figur 2

zeigt den Überlaufkopf eines erfindungsgemäßen Überlaufs in perspektivischer Darstellung.

Figur 3

zeigt den Überlaufkopf aus Figur 2 in einer anderen perspektivischen Darstellung.

Figur 4

zeigt verschiedene weitere Ansichten des Überlaufkopfs aus Figur 2 und 3;

Figur 5

zeigt schematisch eine alternative Ausgestaltung der Spüle aus Figur 1, teilweise im Schnitt;

Figur 6

zeigt eine alternative Spülenform mit Überlaufmulde; und

Figur 7

zeigt eine weitere alternative Spülenform mit separatem Ausguss.

Further features and advantages of the invention will become apparent from the following description of exemplary embodiments with reference to the drawings.

FIG. 1

shows schematically, partially in section, a sink according to the invention with an overflow according to the invention;

FIG. 2

shows the overflow head of an overflow according to the invention in a perspective view.

FIG. 3

shows the overflow head FIG. 2 in another perspective view.

FIG. 4

shows various other views of the overflow head FIGS. 2 and 3 ;

FIG. 5

shows schematically an alternative embodiment of the sink of Figure 1, partly in section;

FIG. 6

shows an alternative Spülenform with overflow trough; and

FIG. 7

shows another alternative sink shape with a separate spout.

In FIG. 1 is a schematic and partially in section a sink, in particular a kitchen sink, shown, which is generally designated by the reference numeral 1. The sink 1 comprises at least one sink 2, of which only a lower corner area is shown, which comprises a pool wall 3 and a pool floor 4. In the pelvic floor 4, a drain opening is provided at the reference numeral 5, which fluidly communicates with a sink drain 6, which is known per se. In the region of the drain opening 5, a sealing plug or valve plug 7 is arranged, which closes the drain opening 5 in a fluid-tight manner in the exemplary embodiment shown, so that no water can flow out of the sink basin 2 through the drain opening 5. As a result, flushing water 2 is contained in the sink tank 2 up to a water level 9 shown schematically. The water level 9 is at the height of an opening 10 in the pool wall 3, which opening 10 can also be referred to as an overflow opening. Due to the selected representation, the opening 10 in Figure 1 is not visible.

In the area of the opening 10, the so-called overflow head 11 of a known overflow 12 is mounted on the outside of the pool wall 3, via which overflow 12 water 8 can flow from the sink 2 to the sink drain 6, when the water level 9 within the sink 2 a certain level reaches or exceeds. The overflow 12 comprises, in addition to the already mentioned overflow head 11, an inlet opening 13 in the region of the overflow head 11, which inlet opening 13 communicates with the aforementioned opening 10 in the basin wall 3 of the sink 2. Around the inlet opening 13 around a seal is regularly arranged to seal the overflow head 11 fluid-tight against the pool wall 3. This seal is in FIG. 1 not visible. At the overflow head 11 closes according to FIG. 1 an angled overflow pipe 14, which defines an outlet opening 15 at its end facing away from the overflow head 11, via which the overflow 12 opens into the flushing outlet 6. Inlet opening 13, overflow head 11, overflow pipe 14 and outlet opening 15 define in this way a flow channel 14a from the opening 10 in the pool wall 3 of the sink 2 to the sink 6, so that water 8 can flow from the sink 2 through the overflow 12 when the water level 9 - as already stated was - reaches or exceeds a certain level (a certain level).

The so far by means of FIG. 1 described embodiment is known per se and comes in commercial (kitchen) sinks, such as the sink 1 shown, used regularly. The present invention now relates to improvements in the area of the overflow 12, in particular of the overflow head 11, which will be discussed in more detail with reference to the following figures.

FIG. 2 shows in perspective overall view of an overflow head 11 of an overflow according to the invention, the in FIG. 2 not shown. For the further structural design features of the overflow to the already explained in detail FIG. 1 directed.

The overflow head 11 'according to FIG. 2 also includes the already mentioned, approximately rectangular inlet opening 13, which is surrounded by a correspondingly shaped sealing surface 16. Approximately in the center of the otherwise slightly funnel-shaped inwardly tapering inlet opening 13 is centrally approximately circular-cylindrical reinforced structure 17 which has a mounting hole 18 for attachment of the overflow head 11 in the region of the pool wall 3 (see. FIG. 1 ) trains. In a lower boundary surface 19 of the inlet opening 13 four openings or holes 20.1 to 20.4 are present side by side in a row, which extend parallel to each other through a connecting piece 21 of the overflow head 11. These openings or holes 20.1 to 20.4 each define a flow channel section of the overflow 12 (see. FIG. 1 ) and each have an approximately circular cross-section, which in particular the further perspective view in FIG. 3 good to see. The connecting piece 21 of the overflow head 11 'has on the outside protruding formations, which can serve for the attachment of a deferred tube or hose (not shown) or for reinforcing purposes.

FIG. 3 shows the overflow head 11 in a further perspective view obliquely from below, so that the formation and arrangement of the openings / holes or flow channel sections 20.1 to 20.4 can be clearly seen. These are - as already stated - side by side on a line (relative to their virtual centers, not shown) and each have approximately the same diameter D. However, the invention is by no means limited to the arrangement, number or size configuration of the openings / bores 20.1 to 20.4 shown here.

For example, the apertures / bores 20.1 - 20.4 may also have different diameters D, and there may be more or less than the four apertures / holes 20.1 - 20.4 shown. In addition, these may be arranged relative to each other in a different geometry, for example offset, in zigzag, in the manner of a square, triangle or the like, or, for example, only a single such breakthrough may be present. It is essential in any case that the opening or the openings have or have an approximately circular diameter, although the connecting piece 21 of the overflow head 11 or its inlet opening 13 has a deviating geometry (oval or rectangular). Applicant has found that the presence of circular flow channel sections significantly improves the overflow water flow behavior in the overflow area, comparable to the improved leakage of water from an over-the-top bottle as it rotates about the longitudinal axis of the bottle becomes.

The openings / bores 20.1 - 20.4 can have a terminal widening in the region of the inlet opening 13 and / or in the area of a free (lower) end of the connecting piece 21, as in FIG FIG. 3 at reference 22.4 for the bore 20.4 is shown as an example.

FIG. 4 shows further views of the overflow head 11 'according to the FIGS. 2 and 3 ,

In part figure 4a), the overflow head 11 'in a side view corresponding FIG. 1 shown. This is not discussed here. One recognizes however the above on the basis of FIG. 2 addressed funnel-like taper of the inlet opening 13, starting from the sealing surface 16 inwardly (left in FIG. 4a )).

In figure 4b) of the overflow head 11 'is shown in a view from the front. Clearly visible is the reinforced structure 17 with mounting hole 18 and the circumferential sealing surface 16th

Teilabbildung 4c) illustrates the position of a section line BB, which is shown according to the overflow head 11 'in the sectional view according to part of Figure 4d). Well recognizable in FIG. 4d ) the position and formation of the flow channel sections or openings / holes 20.1 - 20.4 with approximately the same diameter D, which may be identical for all four holes 20.1 - 20.4, which is in FIG. 4d due to the selected sectional view is not recognizable. Reference character L designates an axial length of the flow channel sections or openings / bores 20.1-20.4, which may also be identical for all four flow channel sections and substantially the entire axial length L of the connection piece 21 from the inlet opening 13 to its free End corresponds.

FIG. 5 schematically shows an alternative embodiment of the overflow according to the invention (in FIG. 5 denoted by reference numeral 12 '), in which, alternatively or in addition to the flow channel sections with a circular cross section formed in the region of the overflow head 11, 11', a (further) such flow channel section is provided in the region of the overflow pipe 14. Specifically, said further flow channel section is designated by reference numeral 20.5 and arranged in the region of an angle 14.1, which connects a first pipe part 14.2, which is connected in extension thereof to the connecting piece 21 of the overflow head 11, 11 ', with a second pipe part 14.3, which is connected to the sink outlet 6 and defines the outlet opening 15 of the overflow 12 '. The elbow or angle part 14.1 is in FIG. 5 hatched shown. Instead of one further flow channel section 20.5 shown, several such sections may in turn be provided in quasi-random arrangement relative to each other, whereupon the above FIGS. 2 and 3 has already been pointed out. In this case, it is also possible for the at least one further flow channel section 20.5 to extend completely through the angle piece 14.1, that is to say also beyond its angled portion.

As the person skilled in the art realizes, the at least one flow channel section 20.5 could alternatively also be arranged in the region of the first pipe part 14.2 and / or of the second pipe part 14.3. In all these cases, the present proposed improvement in the field of (scavenging) overflow can also be realized by retrofitting an already existing overflow in an existing sink, for example by a corresponding pipe or elbow 14.1 - 14.3 installed later or a corresponding use is used in an existing overflow. The same also applies to the overflow head 11 ', which can replace an existing, known overflow head 11.

Without limitation, it has proved to be particularly advantageous if said diameter D of the openings / holes in the range of 2 to 35 mm, with smaller diameters D a corresponding plurality of openings is to be provided. Applicant has found that a minimum cross-section summed over all apertures or bores should be in the range of about 150 mm ² to about 200 mm ² , preferably about 175 mm ² . A preferred length L of the apertures / holes is about 5 to 150 mm and may be dependent on the selected diameter D: L = f × D, where f = f (D) may have a value between about 2 and about. 5

The invention is not limited to the application in the area of a sink, but it can alternatively or additionally be used in the area of a so-called. Overflow well or a separate spout.

FIG. 6 shows a flushing 1 'with overflow well 2'. This overflow well 2 'has a (in the installed state) horizontally disposed opening 10', below which an inventive overflow (not shown here) is mounted or mounted to make its benefits for such flushing 1 'usable.

FIG. 7 shows a rinse 1 "with a separate spout 2". This spout 2 "also has a (in the installed state) horizontally disposed opening 10", below which an inventive overflow (not shown here) is mounted or mounted to make its benefits even for such rinsing 1 "usable.

Of course, an inventive overflow in the sinks 1 ', 1 "according to FIG. 6 or 7 additionally be provided in the area of the basin 2, as described above.

Claims (15)

Overflow (12, 12 ') for a sink (1, 1' 1 "), with at least one inlet opening (13) for mounting on a basin (2) or an overflow trough (2 ') or a separate spout (2"). ) of the sink (1, 1 ', 1 ") is determined, and with an outlet opening (15), which is intended for mounting on a drain (6) or vent valve of the sink (1, 1', 1"), wherein between Inlet opening (13) and outlet opening (15) a flow channel (14a) for a fluid (8) is arranged,
characterized in that
at least one portion (20.1-20.4, 20.5) is provided in the flow channel (14a), in which the flow channel (14a) has a substantially circular cross-section. Overflow (12, 12 ') according to claim 1, characterized in that the flow channel (14a) in the section has a constant cross-section. Overflow (12, 12 ') according to claim 1, characterized in that the flow channel (14a) in the portion, in the flow direction of the fluid (8), at least one taper of its cross-section. Overflow (12, 12 ') according to any one of claims 1 to 3, characterized in that the section has a length L for which: L ≥ f × D, 2 ≤ f ≤ 5, if D denotes a diameter of the section, preferably 2 mm ≤ D ≤ 35 mm. Overflow (12, 12 ') according to one of claims 1 to 4, characterized in that in the flow channel (14a) a plurality of such sections (20.1-20.4) are arranged in parallel. Overflow (12, 12 ') according to claim 5, characterized in that a sum of the cross sections of the sections (20.1-20.4) is at least about 175 mm ² . Overflow (12, 12 ') according to claim 5 or 6, characterized in that the sections (20.1-20.4) next to each other, in the manner of a triangle, offset, arranged in a zig-zag, or the like. Overflow (12, 12 ') according to one of claims 1 to 7, characterized in that the at least one portion (20.1-20.4) in the region of the inlet opening (13) is arranged. Overflow (12, 12 ') according to one of claims 1 to 8, characterized in that the at least one portion (20.1-20.4) in the region of an overflow head (11') is arranged the overflow. Overflow (12, 12 ') according to one of claims 1 to 7, characterized in that the at least one section in the region of the outlet opening (15) is arranged. Overflow (12, 12 ') according to one of claims 1 to 7 or claim 10, characterized in that the at least one portion (20.5) in the region of an angle piece (14.1) of the flow channel (14a) is arranged, which angle piece (14.1) a first, when mounted vertical portion (14.2) of the flow channel (14a) in a second, in mounting horizontal portion (14.3) of the flow channel (14a) transferred. Overflow (12, 12 ') according to claim 11, that the at least one portion (20.5) in the region of the second portion (14.3) is arranged. Sink (1, 1 '1 ") having at least one overflow (12, 12') having an opening (10) in a side wall (3) of a sink (2) or an opening in a horizontal surface of the sink, preferably in the area an overflow well (2 ') or a separate spout (2 "), which opening (10) is fluidly connected to a drain of the sink (1) via the overflow (12, 12'),
characterized in that
the overflow (12, 12 ') according to one of claims 1 to 12 is formed. Retrofit element for a sink (1), 1 ', 1 "with overflow (12, 12'), which sink (1, 1 '1") an opening (10) in a side wall (3) of a sink (2) or a Opening in a horizontal surface of the sink, preferably in the region of an overflow well (2 ') or a separate spout (2 "), which opening (10) via the overflow (12, 12`) fluidly with a drain (6) of the Sink (1) is connected, which retrofit element is adapted to be inserted between an inlet opening (13) and an outlet opening (15) in a flow channel (14 a) of the overflow (12, 12 '), wherein a) an outer contour of the retrofit element substantially corresponds to an inner contour of the overflow (12, 12 ') in a region, and wherein the retrofit element has at least one opening, whose inner contour has a substantially circular cross-section, or b) the retrofit element forms at least a part section of the flow channel (14a). Retrofit element according to claim 14, characterized in that the breakthrough defines a flow channel section, which section has the relevant features according to one of claims 2 to 7.

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