Drain, method for installing a drain, and a kit of parts for installing a drain

Abstract

A drain has a cup with a fluid outlet to be connected to a conduit, wherein the cup accommodates a water trap. The cup has an axial channel along the circumference, the channel is open upwards and limited by a bottom, a channel wall and a cup wall. The drain further has a circumferential drain wall adapted to fit into the channel, whereby the drain wall is arranged axially movable in the channel, a casting framework arranged releasable around the outer circumference of the drain wall, the framework has a radial extension, and the drain wall has an outward radial flange at an upper end, the radial extension of the flange is equal or less than the radial extension of the framework. A method and a kit of parts for installing such a drain are also disclosed.

Claims

1. A drain comprising a cup with a fluid outlet to be connected to a conduit, wherein the cup accommodates a water trap, the cup further comprises an axial channel along the circumference, the channel is open upwards and limited by a bottom, a channel wall and a cup wall, the drain further comprises: a removable circumferential sleeve adapted to fit into the channel, whereby the sleeve is arranged axially movable in the channel and protrudes above the cup and beyond the expected level of the floor wherein the drain is installed, a casting framework arranged around the outer circumference of the sleeve, the framework has a radial extension, a circumferential drain wall adapted to fit into the channel, whereby the drain wall is arranged axially movable in the channel, and the drain wall has an outward radial flange at an upper end, the radial extension of the flange is equal or less than the radial extension of the framework.

2. The drain according to claim 1, wherein the diameter of an upper part of the sleeve is larger than the diameter of the drain wall, the diameter of a lower part of the sleeve is equal to the diameter of the drain wall.

3. The drain according to claim 1, wherein the drain wall is arranged moveable between a first position wherein it protrudes above the cup and above an expected level of the floor where the drain is installed, and a second position wherein the flange of the drain wall is aligned with the expected level of the floor.

4. The drain according to claim 1, wherein the framework is movable axially along the drain wall or sleeve.

5. The drain according to claim 1, wherein a membrane, preferably a flexible membrane, is attached to an upper face of the radial flange of the drain wall, the membrane extends beyond the flange and covers an area around the drain.

6. The drain according to claim 1, wherein the cup has an inner flange or horizontal face which the water trap bears against.

7. The drain according to claim 1, wherein the drain further comprises an intermediate wall in the channel, the wall is fastened in a lower end to the channel wall and protrudes upwards and radially outwards until it bears against the sleeve or drain wall respectively.

8. The drain according to claim 1, wherein the cup has a radial flange at its upper end, the radial flange is to be fastened to a floor or material which the drain is to be installed in.

9. A method for installing a drain according to claim 1, comprising the following steps: a. arranging the cup at the desired place for the drain, and connecting the outlet to a conduit, b. inserting the sleeve into the axial channel, the sleeve protrudes above the expected level of the floor, c. arranging the framework around the circumference of the sleeve, d. casting the floor, e. sliding down the sleeve until a lower part of the radial extension of the framework is below the surface of the casted floor, f. once the floor is cured, removing the sleeve and framework from drain, the framework will leave a circumferential recess in the casted floor, g. inserting the drain wall into the axial channel until the radial flange of the drain wall rests upon the circumferential recess.

10. A kit of parts for installing a drain in concrete slabs or floors, wherein the drain comprises a cup with a fluid outlet to be connected to a conduit and the cup accommodates a water trap, wherein the cup further comprises an axial channel along the circumference, whereby the channel is open upwards, the drain further comprises a removable circumferential sleeve fitting into the channel during casting of the floor, whereby the sleeve when installed in the channel protrudes above the cup and beyond the expected level of the concrete floors wherein the drain is to be installed, a casting framework arranged around the outer circumference of the sleeve, the framework has a radial extension and is movable axially along the sleeve, and a drain wall for replacing the sleeve in the channel once the floor is casted, the drain wall protrudes above the cup and has an outward radial flange at an upper end, the radial extension of the flange is equal or less than the radial extension of the framework on the sleeve.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The invention will in the following be described with reference to the enclosed figures, where

(2) FIG. 1 shows a cross section of a drain having a sleeve, and

(3) FIG. 2 shows a cross section of the drain shown in FIG. 1, where the sleeve is replaced by a drain wall.

DETAILED DESCRIPTION OF THE DRAWINGS

(4) FIGS. 1 and 2 both show a drain according to the invention, wherein the drain is installed in a wooden floor 1 in FIG. 1, and a layer of concrete 2 is casted upon the wooden floor 1 in FIG. 2. The drain comprises a cylindrical cup with a fluid outlet 3 to be connected to a conduit, and a radial flange 4 at its upper end, the radial flange 4 is fastened to the wooden floor 1. The drain accommodates a water trap 5 to prevent fluids from the sewage system to enter the room where the drain is installed.

(5) The cup has two parts, where in the radius of a lower part is smaller than a radius of an upper part, the lower part accommodates the water trap 5. The upper part has an axial channel 6 along the circumference. The channel 6 is limited by a bottom 7, an inner channel wall 8 and an outer cup wall 9, and is open upwards. In the shown preferred embodiment, the outer wall of the cup is stepped between the upper and lower part, wherein the width of the bottom of channel 6 corresponds to the increase of the radius of the upper part of the cup.

(6) In the shown embodiment, the inner channel wall 8 is an extension of the cup wall in the lower part of the cup, leaving the inner part of the drain cylindrically. The inner channel wall 8 ends with a horizontal face 10, and the water trap is bearing against this face 10. The water trap 5 is preferably provided with a sealing towards the face 10 and/or the inside of the inner channel wall 8. The sealings are not shown in the figures.

(7) In the shown embodiment, a circumferential intermediate wall 11 is arranged in the channel 6, wherein the radius of the intermediate wall 11 is constant in a lower part, and gradually increasing in an upper part. The wall 11 is fastened to the channel wall 8 in the lower part, and protrudes upwards and radially outwards towards the cup wall 9. The intermediate wall 11 is provided with sealings 12 on the side facing the cup wall 9. In the shown embodiment, the upper edge of the intermediate wall is at the same level as the flange 4 of the cup.

(8) In FIG. 1 the drain is shown with a sleeve 13 inserted into the channel 6, and a framework 14 arranged around the sleeve 13. The sleeve 13 is inserted into the channel 6 between the intermediate wall 11 and the cup wall 9, and sealed by the sealing 12. The framework 14 is arranged axially moveable on the sleeve 13, and set at a presumed level of the finished concrete floor. The presumed level is indicated in FIG. 1 by a broken line.

(9) In FIG. 2 the drain is shown with a drain wall 15 inserted into the channel 6. The drain wall 15 is inserted into the channel 6 between the intermediate wall 11 and the cup wall 9, and sealed by the sealing 12. The drain wall 15 is arranged axially moveable in the channel 6, and inserted into the channel until a radial flange 16 of the drain wall 15 is bearing against concrete 2 casted on the wooden floor.

(10) The radius of the sleeve 13, at least in the upper part where the concrete 2 is casted, is larger than the radius of the drain wall 15, and the channel 6 is wider than the thickness of the drain wall 15. This makes it possible to adjust the drain wall 15 to adapt any slope of the casted concrete 2 and achieve that the flange 16 of the drain wall 15 bears against the concrete 2 at the whole circumference, even if the casted concrete was not as planned.

(11) In FIG. 2, a membrane 17, such as a flexible sealing membrane or drain membrane is attached to the upper face of the flange 16 of the drain wall and onto the surrounding concrete floor. In this way the floor will be waterproof around the drain, and the official standards and requirements for wet rooms are met.

(12) In a preferred embodiment, all parts of the drain are made of plastic, preferably polypropylene. The drain may also be made of a metal, such as stainless steel, or a combination of materials.

(13) The depth of the channel should preferably be about 6 cm, as about 1 cm of the sleeve or drain wall should always be inserted into the channel, and a concrete layer on a wooden floor is normally about 3 cm. This leaves a margin of adjustment of about 2 cm.

(14) The example above is given to illustrate the invention and should not be used to interpret the following claims limiting. The horizontal cross section of shown drain is circular, but the drain may also be rectangular, oval or any other desired shape. The scope of the invention is not limited by the example give above, but the enclosed claims. Modifications and amendments of the invention, being obvious to a person skilled of the art, should also be included in the scope of the invention.