[0001] The invention relates to a drain for discharging a liquid, and particularly to a
drainage channel to be placed in for instance a finished floor of a wet area in a
building, such as for instance a bathroom or a shower cubicle.
[0002] Bathrooms usually are provided with tiled floors. Such tiled floors are placed slightly
inclined, so that water on such floors flows into the direction of a drain. For a
correctly sloping incline to this drain from various positions around a drain, the
floor has a fall in several directions.
[0003] A recent trend seems to have been set by providing floors with large-sized tiles.
Practice has shown that laying such a floor with sufficient fall in several directions
will then be difficult. As a result it may occur that at some locations on such a
floor water does not flow naturally to the drains and therefore remains on the floor.
[0004] By using a drainage channel such as for instance known from community designs 36314
or 107834, a fall in several directions is at least partially no longer necessary.
The drainage channel known from said community designs comprises a reservoir that
is open at the upper side, comprising a bottom wall and upright side walls that fully
enclose the open reservoir. In the middle, the bottom side is provided with a discharge
opening for successively connecting a siphon and a discharge pipe thereto. At the
upper side of the reservoir a cover grid provided with inflow openings for the liquid,
is placed between the upper side of the upright side walls.
[0005] By placing such a known drainage channel for instance along a side wall of a wet
area in a building, such as for instance a bathroom or a shower cubicle, only a fall
sloping transverse to the drainage channel and in the direction of the drainage channel
is necessary. A fall in one direction can also easily be realised with large tiles,
as a result of which the entire floor is enabled to dewater naturally in the direction
of the drainage channel.
[0006] A drawback of the known drainage channels is that they require a large build-in depth.
As a result the possible placement of such drainage channels already has to be taken
into account at an early stage, preferably already during the design of a construction
project.
[0007] It is an object of the invention to improve on this.
[0008] To that end the invention provides a drainage channel for discharging a liquid comprising:
a duct part comprising a bottom wall and upright longitudinal side walls, wherein
the duct part is provided with a discharge opening, and
a stench-trap situated in the duct part, wherein the stench-trap is placed between
the upright longitudinal side walls and connects to the discharge opening.
[0009] The stench-trap according to the invention placed in the duct part offers the advantage
that no stench-trap, such as for instance a siphon, needs to be placed between the
duct part and the discharge pipe. The discharge pipe can be connected directly to
the discharge opening of the drainage channel according to the invention. As a result
the build-in depth of the drainage channel can remain limited and the drainage channel
according to the invention is highly suitable to be placed in a finished floor or
to be used in a renovation of a wet area in a building, such as for instance a bathroom
or a shower cubicle.
[0010] German patent application 23 35 870 describes one or more drainage channels placed
in a floor for discharging waste water. The one or more drainage channels debouch
in a drain provided with a double water seal serving as stench trap. Of the assembly
of one or more drainage channels connected to a drain according to German patent application
23 35 870 the drain in particular needs a large build-in depth.
[0011] English patent application 2.297.110 as well describes a drainage channel placed
in a floor for discharging water. For discharging water to the sewer the drainage
channel at one of its end is connected to a drain placed there. Said drain is special
in the sense that besides the usual drain cover at the upper side, it has a sideward
opening for connecting the drainage channel thereto. The drain is furthermore provided
with a water seal serving a stench-trap. Of the assembly of the drainage channel connected
to a drain according to English patent application 2.297.110 particularly the drain
has a large build-in depth.
[0012] The drawbacks of the assemblies according to the German patent application and the
English patent application are at least solved by the drainage channel according to
the invention, wherein the stench-trap is placed in the duct part of the drainage
channel.
[0013] In an embodiment the discharge opening is situated in one of the upright longitudinal
side walls. Thus no projecting parts and/or connections are necessary at the lower
side of the drainage channel according to this embodiment, as a result of which the
build-in depth of this drainage channel can be further limited. Preferably the build-in
depth of the drainage channel is smaller than or equal to the thickness of a standard
finished floor.
[0014] In a simple embodiment the stench-trap comprises a first edge raising from the bottom
wall, a lid placed above the first edge, which lid is provided with a second edge
extending in the direction of the bottom wall, wherein the second edge extends over
the first edge at a side of the first edge facing away from the discharge opening,
and flow-through openings for the liquid between the first edge and the lid, the first
edge and the second edge, and the second edge and the bottom wall. Preferably the
first edge and the second edge are substantially transverse to the longitudinal side
walls. Preferably the first edge extends substantially over the full width of the
bottom wall.
[0015] Preferably the lid is detachably placed in the drainage channel. The stench-trap
according to the invention can thus easily be cleaned by removing the lid.
[0016] A further drawback of the known drainage channels is that they require an accurate
and/or laborious placement with respect to the floor surface. On the one hand the
drainage channel needs to be accurately built in at the correct level, so that the
upper side of the upright side walls is placed in the plane of the floor surface.
If the drainage channel is placed too high, the liquid around the drainage channel
will not naturally flow into the drainage channel and liquid will thus remain standing
on the floor. Moreover a drainage channel projecting above the floor will be an obstacle
over which the user may trip. If the drainage channel is placed too low, the drainage
channel may form a local hollow in the floor over which the user may trip. On the
other hand a sealing, such as a border of cement, has to be provided between the upper
side of the upright walls and the surrounding floor, so that the liquid does not flow
into the floor at the outside of the drainage channel. Such a sealing is visibly provided
at the floor surface, and may get dirty during use. In practice such sealings, and
particularly borders of a sealing cement such as silicon paste, prove to be difficult
to clean and keep clean.
[0017] For at least partially solving this further drawback, the invention according to
a second aspect provides a drainage channel for discharging a liquid comprising:
a duct part having a bottom wall and upright longitudinal side walls, wherein the
duct part is provided with a discharge opening, and
a cover means provided with inflow openings for the liquid for at least partially
covering the duct part, wherein the cover means at least partially projects above
the duct part.
[0018] As the cover means at least partially projects above the duct part, the duct part
can be placed below the floor level, wherein the upper side of the cover means can
be placed substantially in the plane of the floor. On the one hand the sealings have
been provided below the floor surface between the upper side of the upright walls
and the surrounding floor, particularly the surrounding finished floor, and said sealings
can be covered with the cover means and/or the floor covering surrounding the drainage
channel. During normal use such a sealing is not visible on the floor surface. On
the other hand the floor covering surrounding the drainage channel can be placed over
the upright walls of the duct part, as a result of which a liquid will flow directly
from the floor covering into the drainage channel. A sealing between the upper side
of the upright walls and the surrounding floor can be left out, as a result of which
the above-mentioned problems of the sealing no longer occur.
[0019] A further advantage of the device according to the invention is that the floor covering
surrounding the drainage channel can be placed adjacent to the cover means, as a result
of which a liquid can flow directly from the floor covering to the cover means and
flow into the drainage channel via the inflow openings in the cover means.
[0020] In an embodiment the cover means projects above the duct part over a distance that
is substantially equal to the thickness of the floor covering, such as for instance
a tiled floor, surrounding the drainage channel. When placing the drainage channel
according to this embodiment the upper sides of the upright walls of the duct part
can be placed substantially in the plane of the concrete finished floor. As a result
the upper side of the cover means will be substantially in the plane of the floor
covering placed on the concrete finished floor.
[0021] Preferably the cover means is formed out of a mesh or grid which preferably can be
detachably placed in the drainage channel. Apart from being crude dirt filter, such
a cover means also ensures a to the user visible, preferably aesthetic, finishing
of the drainage channel. A detachably placed cover means further offers the advantage
that this cover means can be taken out for easily cleaning the duct part and/or the
cover means.
[0022] In a simple embodiment the cover means comprises a cover wall and side walls connecting
to the longitudinal sides of the cover wall, wherein the side walls extend substantially
from the cover wall in the direction of the bottom wall, wherein the cover wall preferably
is provided with the inflow openings. Preferably the cover wall and the side walls
of the cover means are formed as a profile having a substantially U-shaped cross-section,
wherein the side walls preferably are placed substantially perpendicular to the cover
wall.
[0023] Preferably the side walls of the cover means at least partially rests on the bottom
wall. Because the cover means rests on the bottom wall, no support means and/or attachment
means for the cover means are necessary in the drainage channel, and particularly
at the upright longitudinal side walls of the duct part.
[0024] In an embodiment the side walls of the cover means substantially abut the upright
longitudinal side walls of the duct part. The cover means may thus be substantially
secured by the longitudinal side walls, at least in a direction transverse to the
longitudinal side walls.
[0025] In an embodiment the drainage channel with the cover means that at least partially
projects above the duct part may, according to the second aspect of the invention,
also be provided with a stench-trap placed between the upright longitudinal side walls,
as described above.
[0026] In a further embodiment at least one of the longitudinal side walls, at least at
an end thereof facing away from the bottom wall, comprises an edge extending substantially
parallel to the bottom wall and facing away from the opposite longitudinal side wall.
When placing the drainage channel according to this embodiment said edge sits near
the upper side of the finished floor. Said edge may subsequently be covered by the
floor covering such as tiles on the floor. Said edge placed between the tiles and
the finished floor ensures a firm anchoring of the drainage channel in the floor.
[0027] Preferably the edge comprises one or more through openings. Via said opening the
floor covering can be connected to the finished floor for an improved anchoring of
the edge.
[0028] In an embodiment one of the longitudinal side walls comprises a retaining wall projecting
substantially perpendicular to the bottom wall and above the drainage channel. Such
an embodiment is particularly suitable for placement along a wall, wherein the retaining
wall is placed against the skirting board of the wall.
[0029] Preferably said retaining wall is placed offset at the longitudinal side wall, at
least at an end thereof that faces away from the bottom wall. Said retaining wall
placed offset can after placement be covered by a wall covering, such as tiles of
the wall along which the drainage channel has been placed.
[0030] Preferably the retaining wall is provided with one or more through openings. Via
said openings the wall covering can be connected to the wall for an improved anchoring
of the retaining wall.
[0031] In an embodiment the duct part is open at its ends so that further duct parts can
be coupled thereto. As a result an assembled drainage channel of any desired length
can be achieved. Such an assembled drainage channel may for instance extend along
nearly the full length of the floor along a wall.
[0032] For use in floors or floor parts having a standard size, such as for instance shower
cubicles, the length of the duct part preferably corresponds to said standard sizes
and the duct part preferably comprises upright transverse side walls at its ends.
[0033] In a further embodiment the bottom wall comprises a wall section sloping to the discharge
opening. As a result a better discharge of the water into the drainage channel in
the direction of the discharge opening is achieved. Furthermore the quantity of water
that is in the drainage channel for optionally forming a water seal of the stench-trap,
can be reduced.
[0034] In a further embodiment at least one longitudinal side wall, at least considered
in cross-section of the drainage channel, comprises a leaning wall section. Preferably
the leaning wall section of the at least one longitudinal side wall, at least considered
in cross-section of the drainage channel, leans towards the opposite longitudinal
side wall. In other words, the opening at the side of the drainage channel facing
away from the bottom wall where water flows from the floor into the drainage channel
is narrower than a section of the drainage channel situated below the floor. Because
of this section, which in cross-section of the drainage channel is at least wider
near the bottom wall of the drainage channel, the discharge capacity of this embodiment
of the drainage channel according to the invention can be increased. Preferably this
embodiment is further combined with a discharge opening and a discharge pipe connectable
thereto having an inner diameter of more than 4 cm, preferably having a diameter of
5 cm.
[0035] Preferably the leaning wall section of the at least one longitudinal side wall, at
least considered in cross-section of the drainage channel, comprises a dovetail profile.
As a result the drainage channel, at least considered in cross-section of the drainage
channel, has its largest width near the bottom wall. Such a dovetail profile may also
contribute to an improved anchoring of the drainage channel in the finished floor.
[0036] In an advantageous embodiment the drainage channel is made entirely or partially
of a rustproof material. Preferably the rustproof material comprises synthetic material
or stainless steel.
[0037] In an embodiment the discharge opening comprises a non-return valve and/or dirt collection
filter. Such a non-return valve may at least partially prevent sewage water from flowing
back as well as/or prevent a sewage stench in the drainage channel in case of an overpressure
in the sewage pipe. Such a dirt collection filter may catch dirt particles in the
water to be discharged and thus reduce the risk of blockage of the sewage pipe.
[0038] In an embodiment the width of the duct part is smaller than 3 cm, preferably substantially
equal to 2.5 cm.
[0039] In an embodiment the stench-trap, when operative, comprises a water seal.
[0040] Although a water seal may form a simple and effective stench-trap, the inventor acknowledged
that using such a water seal in a drain, such as a drainage channel or drain, placed
in a floor with floor heating, no longer is an adequate sealing within a relative
short period of time. The floor heating warming up the floor may namely result in
a quicker evaporation of the water of the water seal.
[0041] For at least partially solving this further drawback the invention, according to
a third aspect, provides a drain for discharging a liquid comprising:
a reservoir having a bottom wall and upright side walls, wherein the reservoir is
provided with a discharge opening,
a stench-trap connecting to the discharge opening, and
insulation means placed near the stench-trap for at least partially thermally insulating
the stench-trap from its surroundings.
[0042] Because of the insulation means the heating of the stench-trap, and particularly
the evaporation of the water in the water seal, can at least be slowed down, for forming
an adequate stench sealing during a longer period of time.
[0043] In an embodiment said drain according to this third aspect, may be formed as a drainage
channel, wherein the drainage channel is also provided with a stench-trap placed between
the upright longitudinal side walls, as described above.
[0044] Preferably the bottom wall and/or the upright longitudinal side walls of the duct
part of said drainage channel comprise the insulation means, at least near the stench-trap.
[0045] Preferably the duct part, at least near the stench-trap, comprises a double-walled
bottom wall and/or double-walled upright longitudinal side walls, comprising spaced
double walls for forming an insulation layer in between them. Said insulation layer
may comprise an air layer, but may also comprise known insulation materials, such
as for instance rock wool, glass wool, or synthetic materials and synthetic resins
(for instance foamed).
[0046] The invention will be further elucidated on the basis of the exemplary embodiment
shown in the attached drawings, in which:
Figure 1 shows a view in perspective of a part of a first exemplary embodiment of
a drainage channel according to the invention;
Figure 2 shows a view in cross-section in longitudinal direction of a drainage channel
of figure 1 near the discharge opening;
Figures 3, 4 and 5 show a view in cross-section transverse to the longitudinal direction
of exemplary embodiments of various drainage channels according to the invention having
different profile shapes, respectively;
Figure 6 shows a view in cross-section in longitudinal direction of a second exemplary
embodiment of a drainage channel according to the invention;
Figure 7 shows a view in cross-section in longitudinal direction of a third exemplary
embodiment of the drainage channel according to the invention near the discharge opening;
Figure 8 shows a view in perspective of a part of a fourth exemplary embodiment of
a drainage channel according to the invention;
Figure 9 shows a view in cross-section in longitudinal direction of a drainage channel
of figure 8 near the discharge opening; and
Figure 10 shows a view in cross-section transverse to the longitudinal direction of
a fifth exemplary embodiment of a drainage channel according to the invention.
[0047] An exemplary embodiment of a drainage channel 1 according to the invention is provided
with a duct 2 that is built up from a bottom wall 3 and longitudinal side walls 4,
5. In one of the upright longitudinal side walls 5 a discharge opening 10 is furthermore
provided with a connecting sleeve 6 for connecting the drainage channel 1 to a discharge
pipe (not show). In the exemplary embodiment as shown in figure 1 one of the longitudinal
side walls 4 is provided with a projecting retaining wall 7 placed offset, which projects
above the opening of the drainage channel 1. The other longitudinal side wall 5 is
provided with an edge 8 projecting substantially parallel to the bottom wall 3 and
facing away from the longitudinal side wall 4, which edge 8 is for connecting the
drainage channel 1 to the floor surface (not shown). Said projecting edge 8 can be
formed as an ornamental strip, and as such remain visible after tiling the floor surface.
In that case an upper side of a cover grid 9 placeable in the drainage channel 1 is
situated substantially in the same plane as the projecting edge 8. On the other hand
the projecting edge can be incorporated into the floor; the projecting edge is then
for instance placed between the finished floor and the tiled floor 20 as shown for
instance in figures 3, 4 and 5. In that case the cover grid 9 is constructed such
that its upper side sits in the same plane as the tiled floor 20 (see figures 3, 4
and 5).
[0048] In the duct part 2 of the drainage channel 1 a stench-trap is placed. A view in cross-section
of said stench-trap is shown in figure 2. The discharge opening 10 of the drainage
channel is placed within the stench trap. Said stench-trap according to the exemplary
embodiment as shown in figure 2 is formed by two first edges 11, 12 raising from the
bottom and extending over the full width of the duct part 2. In addition the stench-trap
comprises a lid 13 provided with two second edges 14, 15 extending in the direction
of the bottom wall 3, which second edges extend over the first edges 11, 12 so that,
when the drainage channel is filled with water, a water seal is achieved as shown
in figure 2. When further water is supplied to the duct part 2, the water level in
this duct part 2 will rise as a result of which water will flow (indicated with arrows
in figure 2) to the discharge opening 10 via the water seal. The lid 13 can be taken
out of the drainage channel 1 so that the discharge opening 10 and the space surrounding
it can be reached for cleaning it.
[0049] The drainage channel 1 with integrated stench-trap can thus be made of small height
h so that said drainage channel can easily be placed in a finished floor of a concrete
floor. Therefore such a drainage channel is highly suitable for use during renovation
of a wet area in a building, such as for instance a bathroom or shower cubicle. Preferably
said height h is 0.5 cm larger than the diameter of a discharge pipe connectable to
the connecting sleeve 6. If the connecting sleeve 6 is adapted for a discharge pipe
of 4 cm connectable thereto, then the height h is substantially equal to 4.5 cm. When
use is made of a discharge pipe of 5 cm, then the height h is substantially equal
to 5.5 cm.
[0050] The drainage channel 1 with integrated stench-trap can furthermore be made of a small
width b. Preferably the width b of the duct part 2 is smaller than 3 cm, preferably
substantially equal to 2.5 cm.
[0051] Figures 3, 4 and 5 show views in cross-section of various exemplary embodiments of
profiles of the drainage channel 1 according to the invention taken along the line
A-A in figure 2. Said figures also show the position of the floor tiles 20 and/or
wall tiles 21 with respect to the various exemplary embodiments.
[0052] In figure 3 one of the longitudinal sides 51 is placed inclined so that said longitudinal
side wall 51 leans above the bottom wall 3. As a result the duct part 2 is strongly
widened near the bottom wall 3 as a result of which an improved discharge capacity
can be achieved. The stench-trap as such can also be made wider. In the exemplary
embodiment as shown in figure 3 use is made of a continuous first edge 11 which connects
to the longitudinal side walls 4, 51. In addition the lid is divided into a detachable
member 13 having second edge 14 and a permanently placed member having second edge
141 connecting to the inclined longitudinal side wall 51.
[0053] The exemplary embodiment as shown in figure 4 is suitable for placement in continuous
floors, for instance near an access opening of a wet area. Such an embodiment can
for instance also be placed near the tilting door of a garage for discharging precipitation
and the like flowing down from a car parked in the garage. In this exemplary embodiment
the retaining wall is transformed into a projecting edge 71 which like the projecting
edge 8 can be placed between the finished floor and the tiled floor 20 for anchoring
the drainage channel according to this exemplary embodiment.
[0054] This exemplary embodiment is furthermore provided with a lid 13 provided with a second
edge 14 which extends to near the bottom wall 3 and which is provided with an opening
16 for allowing water through to the discharge opening via the first edge 11. An advantage
of such a lid 13 is that no supports have to be provided for it in the duct part 2;
the lid 13 rests on the bottom wall 3 with the two edges 14, 15.
[0055] Figure 5 shows a view in cross-section of an exemplary embodiment of the drainage
channel according to the invention for a continuous floor, analogous to the exemplary
embodiment of figure 4, having two leaning longitudinal side walls 41, 51, analogous
to the exemplary embodiment of figure 3. The longitudinal side walls 41, 51 placed
inclined, together with the bottom wall 3 form a dovetail profile that can be placed
in the finished floor. Such a dovetail profile here ensures a firm anchoring of this
exemplary embodiment of the drainage channel in the finished floor.
[0056] The view in longitudinal section of the exemplary embodiment as shown in figure 6
is provided with wall sections 31, 32 of the bottom wall 3 that slope towards the
discharge opening 10. In addition said exemplary embodiment is provided with upright
transverse side walls 17, 18 situated at the ends of the duct part.
[0057] Figure 7 shows a view in cross-section of a variant of the stench-trap as shown in
figure 2. In this variant the connecting sleeve 6 is partially passed into the drainage
channel 2. The connecting sleeve 6 extends within the drainage channel 2 over the
full width b (see figure 1) of the drainage channel 2. At the upper side of the part
of the connecting sleeve 6 placed in the drainage channel, a segment has been removed
for creating a passage opening 63. In this way the part of the connecting sleeve 6
placed within the drainage channel forms two of the first edges 61, 62 raising from
the bottom which edges extend over the full width of the duct part 2. The part of
the connecting sleeve 6 situated within the drainage channel 2 may, for instance by
means of a glue connection or welding joint, be connected to the bottom wall 3. The
stench-trap according to this variant comprises a lid 13 provided with two second
edges 14, 15 extending in the direction of the bottom wall 3, and extending over the
first edges 61, 62 so that when the drainage channel is filled with water, a water
seal is achieved as shown in figure 7. The stench-trap according to the variant as
shown in figure 7 is active in the same way as the stench-trap shown in figure 2.
[0058] A fourth exemplary embodiment of a drainage channel 1 according to the invention,
as shown in the figures 8 and 9, is provided with a duct 2 built up from a bottom
wall 3 and longitudinal side walls 4, 5. In the bottom wall 3 a discharge opening
10 is furthermore provided with a connecting sleeve 6 for connecting the drainage
channel 1 to a discharge pipe (not shown). In a variant of this exemplary embodiment
the discharge opening 10 can also be placed in a longitudinal side wall 5 as shown
in figure 1.
[0059] In this exemplary embodiment as shown in figure 8 one of the longitudinal walls 4
is provided with a projecting retaining wall 7 placed offset which projects above
the opening of the drainage channel 1. The other longitudinal side wall 5 is provided
with an edge 8 projecting substantially parallel to the bottom wall 3 and facing away
from the longitudinal side wall 4, which edge 8 is for connecting the drainage channel
1 to the surface of a finished floor (not shown). Said projecting edge 8 can be incorporated
into the floor; the projecting edge 8 is then for instance placed between the finished
floor and the tiled floor 20 as shown for instance in the figures 3, 4 and 5.
[0060] As shown in figures 8 and 9, the projecting retaining wall 7 and the projecting edge
8 are provided with through openings 72, 82 for attaching the drainage channel in
the finished floor or against the wall. In addition the covering, such as floor tiles
20 or wall tiles 21, provided on the finished floor or the walls, can be connected
to the finished floor or wall via said through openings 72, 82. For instance when
gluing the floor tiles 20, a glue connection between the floor tiles 20 and the finished
floor can be formed in the through openings 82. As a result a firm anchoring of the
drainage channel 1 into the floor is achieved. Such through openings 72, 82 can also
be provided in the retaining walls 7 and/or projecting edges 8, 71 of the embodiments
as shown in the figures 1, 2, 3, 5 or 10.
[0061] In the duct part 2 a cover means 9 is placed, which projects above the duct part
2 over a distance d that is substantially equal to the thickness of a floor covering,
such as a tiled floor 20 (see figures 3, 4 and 5), surrounding the drainage channel.
The cover means 9 is constructed such that its upper side 91 sits substantially in
the same plane as the tiled floor 20.
[0062] The cover means 9 is formed like a profile having a substantially U-shaped cross-section
and comprises a cover wall 91 and side walls 92 connecting to the longitudinal sides
of the cover wall 91, wherein the side walls 92 are placed substantially perpendicular
to the cover wall 91. The side walls 92 of the cover means 9 support at least partially
on the bottom wall 3.
[0063] At least the cover wall 91 of the cover means 9 is formed out of a mesh or grid provided
with openings for allowing a liquid to flow therethrough into the drainage channel
2. In a simple exemplary embodiment the entire cover means 9 is formed out of a mesh
or grid bent into a U-shaped profile. Thus also the connecting side walls 92 may also
be provided with openings for allowing a liquid to flow therethrough into the drainage
channel.
[0064] Figure 10 shows a view in cross-section of an exemplary embodiment of a variant of
the drainage channel 1 according to figure 4.
[0065] In the exemplary embodiment as shown in figure 10, the side walls 4, 5 and the bottom
wall 3 are constructed double-walled at least near the stench-trap. Between the outer
walls 32, 42, 52 and the inner walls 3, 4, 5 an insulation layer 30 is formed for
thermally insulating at least the stench-trap with respect to the surrounding floor.
The insulation layer 30 may comprise an air layer, but may also be provided with insulation
material 31.
[0066] It is observed here that the embodiments of the invention described above are intended
as an illustration of the invention and not as a limitation of the invention. An expert
will certainly be capable of designing alternative embodiments that fall within the
scope of protection of the attached claims.
[0067] For instance in a variant of the embodiment as shown in figure 10, wherein the inner
walls 3, 4, 5 are surrounded with an insulation material 31, the outer walls 32, 42,
52 can be left out, if the insulation material 31 is of such a structure or construction
that the insulation material 31 forms a firm and/or substantially form-retaining layer.
A protective outer wall 32, 42, 52 then is not necessary.
[0068] Furthermore the invention of a water seal wherein the walls, at least near the water
seal, are provided with insulation means for thermally insulating the water seal with
respect to the floor surrounding the drain, cannot only be used for drainage channels
as shown in figure 10, but also for other drains, such as a floor drain.
1. Drainage channel for discharging a liquid comprising:
a duct part comprising a bottom wall and upright longitudinal side walls, wherein
the duct part is provided with a discharge opening, and
a stench-trap situated in the duct part, wherein the stench-trap is placed between
the upright longitudinal side walls and connects to the discharge opening.
2. Drainage channel according to claim 1, wherein the discharge opening is situated in
one of the upright longitudinal side walls or in the bottom wall.
3. Drainage channel according to claims 1 or 2, wherein the stench-trap comprises
a first edge raising from the bottom wall,
a lid, wherein the lid is placed above the first edge and is provided with a second
edge extending in the direction of the bottom wall, wherein the second edge extends
over the first edge at a side of the first edge facing away from the discharge opening,
flow-through openings for the liquid between the first edge and the lid, the first
edge and the second edge, and the second edge and the bottom wall,
wherein the first edge and the second edge preferably are substantially transverse
to the longitudinal side walls, wherein the first edge preferably extends substantially
over the full width of the bottom wall, and
wherein the lid preferably is detachably placed in the drainage channel.
4. Drainage channel according to any one of the preceding claims, comprising a cover
means provided with inflow openings for the liquid for at least partially covering
the duct part,
wherein the cover means preferably at least partially projects above the duct part
over a distance which, preferably, substantially equals the thickness of a floor covering,
such as for instance a tiled floor, surrounding the drainage channel, and
wherein the cover means preferably is detachably placed in the drainage channel.
5. Drainage channel according to claim 4, wherein the cover means comprises a cover wall
having longitudinal sides and side walls connecting to the longitudinal sides, wherein
the side walls extend substantially from the cover wall in the direction of the bottom
wall,
wherein the cover wall preferably is provided with the inflow openings,
wherein the cover wall and the side walls of the cover means preferably define
a profile having a substantially U-shaped cross-section, wherein the side walls preferably
are placed substantially perpendicular to the cover wall,
wherein the side walls of the cover means preferably at least partially rest on
the bottom wall, and
wherein the side walls of the cover means preferably at least partially abut the
upright longitudinal side walls of the duct part.
6. Drainage channel according to any one of the preceding claims, wherein the bottom
wall and/or the upright longitudinal side walls of the duct part, at least near the
stench-trap, comprises insulation means,
wherein the duct part, at least near the stench-trap, preferably comprises a double-walled
bottom wall and/or double-walled upright longitudinal side walls, comprising spaced
double walls for forming an insulation layer in between them.
7. Drainage channel according to one or more of the preceding claims, wherein a first
of the longitudinal side walls, at least at an end thereof facing away from the bottom
wall, comprises an edge extending substantially parallel to the bottom wall and away
from a second longitudinal side wall situated opposite the first longitudinal side
wall, and wherein the edge preferably comprises one or more through openings.
8. Drainage channel according to one or more of the preceding claims, wherein a first
of the longitudinal side walls comprises a retaining wall projecting substantially
perpendicular to the bottom wall and above the drainage channel, wherein the retaining
wall preferably is placed shifted at the first longitudinal side wall, at least at
an end thereof that faces away from the bottom wall, and wherein the retaining wall
preferably comprises one or more through openings.
9. Drainage channel according to one or more of the preceding claims, wherein at least
one longitudinal side wall, at least considered in cross-section of the drainage channel,
comprises a leaning wall section,
wherein the leaning wall section of the at least one longitudinal side wall, at
least considered in cross-section of the drainage channel, preferably leans towards
the opposite longitudinal side wall,
wherein the leaning wall section of the at least one longitudinal side wall, at
least considered in cross-section of the drainage channel, preferably comprises a
dovetail profile.
10. Drainage channel according to any one of the preceding claims, wherein the duct part
comprises upright transverse side walls situated at its ends, and/or wherein the bottom
wall comprises a wall section sloping to the discharge opening.
11. Drainage channel according to one or more of the preceding claims, wherein the stench-trap,
when operative, comprises a water seal.
12. Drainage channel for discharging a liquid comprising:
a duct part having a bottom wall and upright longitudinal side walls, wherein the
duct part is provided with a discharge opening,
a cover means provided with inflow openings for the liquid for at least partially
covering the duct part, wherein the cover means at least partially projects above
the duct part, and
wherein the cover means projects above the duct part preferably over a distance
that is substantially equal to the thickness of a floor covering, such as for instance
a tiled floor, surrounding the drainage channel.
13. Drain for discharging a liquid comprising:
a reservoir having a bottom wall and upright side walls, wherein the reservoir is
provided with a discharge opening,
a stench-trap connecting to the discharge opening, and
insulation means placed near the stench-trap for at least partially thermally insulating
the stench-trap from its surroundings.