EP1956154B1

EP1956154B1 - Narrow drain

Info

Publication number: EP1956154B1
Application number: EP08075031A
Authority: EP
Inventors: Jurgen Hendrik Peter Jozef Keizers
Original assignee: Easy Sanitary Solutions BV
Current assignee: Easy Sanitary Solutions BV
Priority date: 2007-02-07
Filing date: 2008-01-11
Publication date: 2010-06-09
Anticipated expiration: 2028-01-11
Also published as: PT1956154E; EP2210990A3; ATE470764T1; ES2347022T3; PL1956154T3; DK2210990T3; DE602008001448D1; DE202008017453U1; NL1033352C2; DK1956154T3; ES2637088T3; EP2210990A2; EP2210990B1; EP1956154A1; PL2210990T3

Abstract

The invention relates to a siphon comprising: - a first chamber with an elongate inflow opening; and - a second chamber connected to the first chamber via a passage opening, wherein the passage opening lies below the inflow opening during use, wherein the second chamber extends substantially in longitudinal direction of the elongate inflow opening, and wherein the second chamber comprises an outflow opening which lies above the passage opening during use.

Description

The invention relates to a drain according to the preamble of claim 1. Such a drain is for example known from WO 2007/004863 . A siphon is used as stench-trap in drains of for instance washbasins, baths and showers. A siphon seals the entrance to the sewer pipe by providing a layer of water. Another example of a drain is known from WO 01/073231 .
Numerous siphons are known in many forms and variations. The best known form is the so-called swan-neck. This is a normally round tube, which has a first downward directed part which then bends into an upward directed part and subsequently bends once again into a downward directed part. Due to this shape water will always remain in the first downward directed part and the upward directed part, whereby the connection to the sewer remains sealed. Such swan-necks are still frequently applied beneath washbasins.
A different variant of a siphon is known for showers. This is due particularly to the limited overall depth as a result of the thickness of a floor. Such a siphon consists of a cylindrical receptacle in which an outlet pipe protrudes centrally. An inverted receptacle is then placed over this outlet pipe. A seal is also realized here by providing a quantity of water.
It is important in all siphons that a sufficient quantity of water can be drained by the siphon. The throughflow surface must therefore have a minimum area in order to bring about good and rapid discharge of water.
The existing siphons either have the drawback that the overall depth is considerable, such as a swan-neck, or that the width-length ratio of a siphon is substantially equal to 1, whereby a considerable amount of space is taken up.
It is now an object of the invention to provide a drain which can be given a narrow form, wherein the overall depth remains limited.
This object is achieved with a drain according to claim 1.
By providing an elongate inflow opening and arranging the second chamber substantially in longitudinal direction of the elongate inflow opening, a narrow, elongate siphon is obtained. It is hereby possible to keep the visible part of a drain narrow, whereby the drain disrupts the floor in which it is arranged as little as possible.
Furthermore, the throughflow area of the passage opening and the outflow opening is substantially equal to the throughflow area of the inflow opening. This ensures that the water flowing in via the inflow opening is not blocked or slowed down and a rapid discharge of the water is possible.
In another embodiment of the drain according to the invention the outflow opening is arranged in longitudinal direction of the elongate inflow opening adjacently of this inflow opening. The narrowest possible siphon hereby also becomes possible.
In yet another embodiment the second chamber has a cross-section, at least over the distance between the passage opening and the outflow opening, which is at least substantially equal to the throughflow area of the inflow opening.
In a further embodiment of the drain according to the invention the ratio between the main dimensions of the elongate inflow opening is at least 1:2, preferably 1:6.
In a further embodiment the first chamber of the drain is preferably formed by at least a part of the housing such that the discharge opening is connected to the first chamber only via the second chamber.
In another embodiment of the drain according to the invention the outflow opening of the siphon is connected via a channel to the discharge opening of the housing.
A further preferred embodiment of the drain according to the invention comprises a gutter which guides liquid for draining to the inflow opening of the first chamber.
Owing to the narrow embodiment of the siphon it is also possible to give the drain a narrow form, and an elongate gutter having a minimum width can be arranged. In the light of aesthetic considerations this is highly recommended.
Another drain not according to the invention, comprises:

a tubular housing;
a first baffle placed obliquely in longitudinal direction in the housing, wherein on the underside, between the first baffle and the tubular housing, there is provided a passage opening with a throughflow area substantially equal to the throughflow area of the tubular housing;
second and third baffles placed obliquely in longitudinal direction in the housing on either side of the first baffle, wherein on the upper side, between the second and third baffles and the tubular housing, there is provided a passage opening with a throughflow area substantially equal to the throughflow area of the tubular housing.

In this drain the siphon is provided by placing three baffles in the tubular housing. Elongate openings are provided by placing the different baffles obliquely in the housing, so that a narrow siphon is provided which is accommodated in the tubular housing. It is thus possible to arrange a siphon in an existing outlet pipe. Because the baffles are positioned in oblique direction and thus provide elongate passage openings, the flow rate through the outlet pipe is in at least very large measure maintained.
These and other characteristics of the invention are further elucidated with reference to the accompanying drawings.

Figure 1 shows a perspective view of a first embodiment of a drain according to the invention.
Figure 2 shows the drain according to figure 1 in another perspective view.
Figure 3 shows a removable part of the siphon of the drain of figure 1.
Figure 4 shows an embodiment of a drain not according to the invention.
Figure 5 shows an embodiment of a drain not according to the invention.

Figure 1 shows a drain 1 which has a housing 2 with a discharge opening 3 arranged on the side. An inflow opening 4 is provided on the upper side of the housing. A gutter 5, which guides water W to inflow opening 4, is arranged on housing 2.
Figure 2 shows drain 1 according to figure 1 in another perspective view. It is apparent here that the water W flowing via inflow opening 4 enters a first chamber 6 formed by a part of housing 2 and an insert 7. Insert 7 is shown in more detail in figure 3. The water W flowing into chamber 6 then arrives at passage opening 8 which is arranged on the underside of insert 7. As shown in figure 1, water W enters second chamber 9 via this passage opening 8.
Second chamber 9 is provided on the upper side with an outflow opening 10 along which water W can flow out of second chamber 9 and thus enters discharge opening 3. Because inflow opening 4 is elongate, the width of drain 1 can remain limited. Because the dimensions of passage opening 8 and outflow opening 10 are further chosen such that the throughflow area of the openings is almost the same, it is ensured that a good drainage of water W takes place.
Insert 7 with second chamber 9 is connected removably to discharge opening 3 via a flange 11. This provides the advantage that the siphon part of drain 1 can be easily cleaned.
Figures 4A and 4B show an embodiment 20 of a drain not according to the invention. This drain 20 has a tubular housing in which a first baffle 22, a second baffle 23 and a third baffle 24 are arranged. First baffle is arranged such that a passage opening 25 is present between tubular housing 21 and the upper side of baffle 22.
Owing to the oblique placing of baffles 22, 23, 24 in longitudinal direction of tube 21, the passage opening 25 is elongate, and the throughflow area is hereby considerably enlarged. Second baffle 23 is arranged against the upper side of tube 21 so that a second passage opening 26 is arranged on the underside of baffle 23. Third baffle 24 is once again arranged such that a third passage opening 27 is arranged between the upper edge of baffle 24 and tube 21.
The water flowing through tube 21 will then first pass over first baffle 22 via passage opening 25 and thus enter a first chamber 28. Water W then flows under second baffle 23 via passage opening 26 and herein enters second chamber 29.
The water here passes over third baffle 24 via passage opening 27, and can further continue on its way through tube 21.
Owing to the arrangement of baffles 22, 23, 24 water will remain in first chamber 28 and second chamber 29. This provides a seal against stench. Figures 5A and 5B show an embodiment 30 of a drain not according to the invention. For ease of explanation of the drawing, figures 5A and 5B show a square tube 331, although it will be apparent that such a tube 31 can also have a round cross-section, this in fact being more usual. A square tube is however chosen for the sake of clarity in the drawing. Figure 5A herein shows a cross-sectional view as seen from above, while figure 5B shows a cut-away side view.
Tube 31 has an inlet opening 32 along which water flows in. Arranged in tube 31 is a curved baffle 33 which lies against the upper side in fully sealing manner and leaves an opening 34 clear on the underside. The inflowing water W can enter space 35 via this opening 34.
Space 35 is bounded by the first baffle 33 and a second curved baffle 36, which lies sealingly against the underside and provides an outflow opening 37 on the upper side. The water from space 35 can continue further on its way via outflow opening 37.
Drain 30 can for instance be placed in an already existing outlet pipe and must co-act with a collecting holder placed preceding drain 30. Such a collecting holder 7 can for instance be arranged beneath a washbasin, and the necessary water level can hereby be maintained in space 35 and the preceding space up to the collecting holder.
Owing to the placing of baffles 33 and 36 in substantially a V-shape as seen from above, the water flow W via inflow opening 34, space 35 and outflow opening 37 will display a helical flow. Due to this helical flow the water will be slowed as little as possible by the placing of baffles 33 and 36. The area of inflow opening 34 and outflow 10 opening 37 is moreover enlarged due to the oblique placing of baffles 33, 36, whereby a higher flow rate is possible.

Claims

Drain comprising:
- a housing (2), suitable to be placed below a gutter (5), with an inflow opening on the upper side and a discharge opening (3) on the underside or side,

- a siphon (1) arranged in the housing (2) and comprising a second chamber (9), a passage opening (8), and an outflow opening (10),
wherein a first chamber (6) and its elongate inflow opening (4) are formed by the siphon (1) and by at least a part of the housing (2),
wherein the second chamber (9) is connected to the first chamber (6) via the passage opening (8), wherein the passage opening (8) lies below the inflow opening (4) of the first chamber (6) during use, and wherein the second chamber (9) comprises an outflow opening (10) which lies above the passage opening (8) during use,
characterized in that the second chamber (9) extends substantially in longitudinal direction of the elongate inflow opening (4) of the first chamber (6) and the throughflow area of the passage opening (8) and the outflow opening (10) is substantially equal to the throughflow area of the inflow opening (4) of the first chamber (6).
Drain as claimed in claim 1, wherein the second chamber (9) has a cross-section, at least over the distance between the passage opening (8) and the outflow opening (10), which is at least substantially equal to the throughflow area of the inflow opening (4).
Drain as claimed in claim 1 or 2, wherein the outflow opening (10) is arranged in longitudinal direction of the elongate inflow opening (4) adjacently of this inflow opening (4).
Drain as claimed in any of the foregoing claims, wherein the ratio between the main dimensions of the elongate inflow opening (4) is at least 1:2, preferably 1:6.
Drain as claimed in claim 1, wherein the first chamber (6) is formed by at least a part of the housing (2) such that the discharge opening (3) is connected to the first chamber (6) only via the second chamber (9).
Drain as claimed in claim 5, wherein the outflow opening (10) of the siphon is connected via a channel to the discharge opening (3) of the housing (2).
Drain as claimed in any of the claims 1-6, comprising a gutter (5) which guides liquid for draining to the inflow opening (4) of the first chamber (6).