Recirculating shower system

EP4705584A1Pending Publication Date: 2026-03-11FLOW-LOOP APS
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Patent Information

Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-04-23
Publication Date
2026-03-11

AI Technical Summary

Technical Problem

Conventional recirculating shower systems are expensive, bulky, and require significant remodeling due to the need for custom drain valves that are not universally compatible with different shower drains, leading to increased logistics and storage costs, as well as potential customer errors in selecting compatible devices.

Method used

A recirculating shower system featuring a drain cover with a flexible base and configurable flange arrangement that forms a pool of water, allowing for adjustable depth control using various engagement mechanisms such as stepped twist, snap-lock, threaded, or telescopic arrangements, and is designed for easy installation on standard drains, enabling the use of a suction device to recover water.

Benefits of technology

The solution provides a cost-effective, versatile, and easy-to-install recirculating shower system that reduces waste water and heat by allowing water recirculation with adjustable pool depth, compatible with various drain types, thus minimizing installation costs and environmental impact.

✦ Generated by Eureka AI based on patent content.

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Abstract

A recirculating shower system (10) is presented. The recirculating shower system (10) comprises a water recirculation arrangement (12), a suction device (15) configured to recover water from a pool of water (30) at the recirculating shower system (10), a shower head (16) configured to provide water into the pool of water (30) and a drain cover (40) for removable placement on top of a shower drain (20) to form the pool of water (30) having a configurable depth (d). The drain cover (40) comprises a flexible base part and a flange arrangement extending from the flexible base part. The flange arrangement is configured to define an overflow opening at a, from a top surface of the drain, distance (d) corresponding to the depth (d) of the pool of water (30).
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Description

[0001] RECIRCULATING SHOWER SYSTEM

[0002] TECHNICAL FIELD

[0003] The present invention relates to a drain cover and more precisely to a drain cover for removable placement on top of a shower drain to form a pool of water at the shower drain.

[0004] BACKGROUND

[0005] When using a conventional shower system, water is being provided from a water supply via a showerhead to the person taking a shower. Usually there is a mix of supplied hot and cold water in order to deliver water of a desired temperature. This water from the showerhead is, after having showered the person, is discarded through a drain of the shower. The discarded water will generally have a temperature close to what is being provided by the showerhead.

[0006] Heating water is an energy intensive process. Heating 1 dm3(i.e. 1 liter or approximately 1 kg) of water by 1 °C consumes approximately 4,18 J / 1C (i.e. 1,16 Wh / lC ). An average shower (7 minutes) consumes 55 liters of water and assuming a shower temperature of 37 °C and a cold-water inlet having a temperature of 12 °C, will waste 4,18*55*(37-12)=5,7 kJ or 1,6 kWh just due to wasted heat. In addition to this, the water itself is wasted and need to be processed (cleaned) before it may be used again.

[0007] To reduce the waste water and waste heat, water recirculation shower systems have been introduced wherein at least a part of the water used for the shower is being recirculated. The recirculated water is usually being filtered and / or cleaned and / or purified in some other way before being provided again to the person taking a shower via the showerhead.

[0008] Such recirculating showers are generally expensive, bulky and above all, installation may require significant, if not full, remodeling of a bathroom.

[0009] In WO 2018202807 Al, a drain valve device for a drain of a shower floor of a water recirculation shower system is presented. The drain valve effectively and controllably impede water from entering the drain. The drain valve is adapted to fit inside the drain forming a water tight seal to the edges of the drain.

[0010] There is a great variety of drains, and there is a need for drain valve that may be used with more than one specific drain.

[0011] From the above it is understood that there is room for improvements.

[0012] SUMMARY

[0013] An object of the present invention is to provide a new type of drain cover which is improved over prior art and which eliminates or at least mitigates the drawbacks discussed above. More specifically, an object of the invention is to provide a drain cover for a recirculating shower, where the drain cover is easy to install on a general drain and provides a controllable pool of water at the drain. These objects are achieved by the technique set forth in the appended independent claims with preferred embodiments defined in the dependent claims related thereto.

[0014] In a first aspect, a recirculating shower system is presented. The recirculating shower system comprises a water recirculation arrangement, a suction device configured to recover water from a pool of water at the recirculating shower system. The recirculating shower system further comprises a shower head configured to provide water into the pool of water and a drain cover for removable placement on top of a shower drain to form the pool of water having configurable a depth. The drain cover comprises a flexible base part and a flange arrangement extending from the flexible base part and configured to define an overflow opening at, from a top surface of the drain, a distance corresponding to the depth of the pool of water.

[0015] In some variants, the flange arrangement comprises a first member and a second member. This is beneficial as more members increase the degrees of freedom when designing the flange arrangement.

[0016] In some variants, the depth of the pool of water is determined by an engagement of the first member by the second member. This is beneficial as it provides a simple and configurable control of the depth of the pool of water. In some variants, the engagement of the first member by the second member is provided at least partly by a stepped twist and retain arrangement of the first member and the second member.

[0017] In some variants, the engagement of the first member by the second member is provided at least partly by a snap-lock arrangement of the first member and the second member.

[0018] In some variants, the engagement of the first member by the second member is provided at least partly by a threaded arrangement of the first member and the second member.

[0019] In some variants, the flange arrangement further comprises one or more intermediate members.

[0020] In some variants, the engagement of the first member by the second member comprises sandwiching the one or more intermediate members between the first member and the second member.

[0021] In some variants, the engagement of the first member by the second member is provided at least partly by telescopic arrangement of the first member and the second member.

[0022] In some variants, the recirculating shower system further comprises a locking arrangement configured to lock the flange arrangement.

[0023] In some variants, the flange arrangement extends from a first surface of the base part and one or more drain protrusions extend from an opposite second surface of the base part.

[0024] In some variants, a first surface of the base part is provided with a non-slip pattern.

[0025] In some variants, the non-slip pattern is formed from the base part.

[0026] In some variants, the non-slip pattern is a coating applied to the first surface of the base part.

[0027] In some variants, the recirculating shower system further comprises one or more openings arranged at second height distance below the distance between the overflow opening and the top surface of the drain. In some variants, at least one of the one or more openings is connectable to the suction device of the recirculating shower system.

[0028] In some variants, the first member of the flange arrangement is integral with the flexible base part.

[0029] In some variants, the drain cover further comprises a grip member.

[0030] In some variants, the drain cover further comprises a hanger member.

[0031] In some variants, the grip member is the hanger member.

[0032] In some variants, the suction device is connectable to the drain cover.

[0033] BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Embodiments of the invention will be described in the following; references being made to the appended diagrammatical drawings which illustrate non-limiting examples of how the inventive concept can be reduced into practice.

[0035] Figs, la-b are cross-sectional side views of a recirculating shower system;

[0036] Fig. 2 is a cross-sectional side view of a recirculating shower system according to some embodiments of the present disclosure;

[0037] Fig. 3 is a cross-sectional side view of a drain cover according to some embodiments of the present disclosure;

[0038] Figs. 4a-b are exploded perspective views of drain covers according to some embodiments of the present disclosure;

[0039] Figs. 5a is a perspective view of a first member of a flange arrangement according to some embodiments of the present disclosure;

[0040] Figs. 5b is a perspective view of a second member of a flange arrangement according to some embodiments of the present disclosure;

[0041] Figs. 5c is a perspective view of a second member of a flange arrangement according to some embodiments of the present disclosure;

[0042] Fig. 6 is an exploded perspective view of a drain cover according to some embodiments of the present disclosure;

[0043] Figs. 7a is a perspective view of a first member of a flange arrangement according to some embodiments of the present disclosure; Figs. 7b is a perspective view of a second member of a flange arrangement according to some embodiments of the present disclosure;

[0044] Figs. 7c is a perspective view of a third member of a drain cover according to some embodiments of the present disclosure;

[0045] Figs. 8 is a perspective view of a flange arrangement according to some embodiments of the present disclosure;

[0046] Figs. 9 is a perspective view of a flange arrangement according to some embodiments of the present disclosure;

[0047] Fig. 10 is a perspective view of a drain cover according to some embodiments of the present disclosure;

[0048] Fig. 1 la is a partial cross-sectional side view of a drain cover according to some embodiments of the present disclosure;

[0049] Fig. 1 lb is a perspective view of a base part according to some embodiments of the present disclosure;

[0050] Fig. 12 is a partial cross-sectional side view of a drain cover according to some embodiments of the present disclosure;

[0051] Fig. 13 is a partial cross-sectional side view of base part of a drain cover according to some embodiments of the present disclosure;

[0052] Fig. 14 is a partial cross-sectional side view of a drain cover according to some embodiments of the present disclosure; and

[0053] Fig. 15 is a cross-sectional side view of a recirculating shower system according to some embodiments of the present disclosure;

[0054] DETAILED DESCRIPTION OF EMBODIMENTS

[0055] Hereinafter, certain embodiments will be described more fully with reference to the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided by way of example so that this disclosure will be thorough and complete, and will fully convey the scope of the invention, such as it is defined in the appended claims, to those skilled in the art. The term “coupled” is defined as connected, although not necessarily directly, and not necessarily mechanically. Similarly, the term “connected”, or “operatively connected”, is defined as connected, although not necessarily directly, and not necessarily mechanically. Two or more items that are “coupled” or “connected” may be integral with each other. The terms “a” and “an” are defined as one or more unless this disclosure explicitly requires otherwise. The terms “substantially”, “approximately” and “about” are defined as largely, but not necessarily wholly what is specified, as understood by a person of ordinary skill in the art. The terms “comprise” (and any forms thereof), “have” (and any forms thereof), “include” (and any form thereof) and “contain” (and any forms thereof) are open-ended linking verbs. As a result, a method that “comprises”, “has”, “includes” or “contains” one or more steps, possesses those one or more steps, but is not limited to possessing only those one or more steps.

[0056] In Figs, la and lb, a prior art recirculating shower systems 10’ are shown. The prior art recirculating shower system 10’ comprises a prior art water recirculation arrangement 12’ configured to provide water through a prior art shower head 16’ and to receive water from a prior art shower drain 20’. The prior art recirculating shower system 10’ is provided with a prior art control arrangement 14’ via which a temperature and / or a flow of water through the prior art shower head 16’ may be controlled. The prior art control arrangement 14’ may further be usable to control a recirculation mode of the prior art recirculating shower system 10’. The prior art water recirculation arrangement 12’ is configured to receive water for recirculation. The prior art water recirculation arrangement 12’ is configured to receive water for recirculation from the prior art shower drain 20’. To this end, the water recirculation arrangement 12’ is fluidly connected to the prior art shower drain 20’ allowing a pump (not shown) of the prior art water recirculation arrangement 12’ to suck water for recirculation from the prior art shower drain 20’.

[0057] In Fig. la, the fluid connection between the prior art water recirculation arrangement 12’ and the prior art shower drain 20’ provided by a prior art hose member 11’ embedded in a floor of the prior art recirculating shower system 10’. Installation of a prior art recirculating shower system 10’ such as the one shown in Fig. la requires opening of a floor of the prior art recirculating shower system 10’, damaging a sealing layer of the floor causing (depending on jurisdiction) resealing of the entire room housing the prior art recirculating shower system 10’. Further to this, the prior art shower drain 20’ of Fig. la is a non-standard drain which causes a price of the drain to increase compared to standard drains.

[0058] In the prior art recirculating shower systems 10’ shown in Fig. lb, the prior art hose member 11’ is provided with a prior art suction device 15’ configured to extend into the prior art shower drain 20’. The prior art suction device 15’ will block, or at least limit, a fluid connection between the prior art shower drain 20’ and a drain of the building allowing the pump of the prior art water recirculation arrangement 12’ to suck water for recirculation from the prior art shower drain 20’. As the prior art suction device 15’ extend into the prior art shower drain 20’, different prior art suction devices 15’ will have to be provided for different prior art drains as the design of drains may differ greatly between houses, regions and countries.

[0059] The inventors behind the present disclosure have, after identification of the drawbacks of the prior, realized that there is a need for a cheaper, simpler and more general device, usable with substantially any drain, of obtaining water for circulation by a recirculating shower. A solution usable with any drain will reduce a number of variants available, reducing logistics and storage costs. It further reduces a risk that a customer has problems identifying a drain and mistakenly ordering an incorrect device, or a device that is not fully compatible resulting in returns (added transportation, logistics, costs and environmental impact) or reduced functionality (reduced environmental benefits of a recirculating shower system).

[0060] In Fig. 2, a recirculating shower system 10 according to some embodiments of the present disclosure is shown. The recirculating shower system 10 comprises a water recirculation arrangement 12 configured to provide water through a shower head 16 and to recover water from a pool of water 30 (magnified portion in Fig. 2) at a shower drain 20. The recirculating shower system 10 is provided with a control arrangement 14 via which a temperature and / or a flow of water through the shower head 16 may be controlled. The control arrangement 14 may further be usable to control a recirculation mode of the recirculating shower system 10. The water recirculation arrangement 12 is consequently configured to receive water for recirculation. To this end, the water recirculation arrangement 12 is fluidly connected to the pool of water 30 at the shower drain 20 allowing a pump (not shown) of the water recirculation arrangement 12 to suck water for recirculation from the pool of water 30. Some of the features of the recirculating shower system 10 mentioned above may correspond to similar features of the prior art recirculating shower system 10’. However, the recirculating shower system 10 further comprises a drain cover 40.

[0061] The drain cover 40 is configured to be arranged on top of the shower drain 20. The drain cover 40 blocks or limits a flow of water into the shower drain 20 such that the pool of water 30 is formed at the shower drain 20. The recirculating shower system 10 may further comprise a suction device 15 configured to be arranged in or at the pool of water 30 provided by the drain cover 40.

[0062] The shower head 16 is, in Fig. 2, shown as an overhead shower head 16. This is one exemplary embodiment, and in some embodiments, the recirculating shower system 10 may, additionally, or alternatively, comprise a handheld shower head 16. The shower head 16 is connected to the water recirculation arrangement 12.

[0063] The suction device 15 of Fig. 2 is shown fluidly connected to the water recirculation arrangement 12 by a hose arrangement 11. Depending on e.g. a depth d of the pool of water 30, a slope of the floor of the recirculating shower system 10 etc., it may be advantageous to connect the suction device 15 directly to the drain cover 40 (will be further explain in later sections). Additionally, or alternatively, in some embodiments, it may be advantageous to connect suction device 15 to the recirculation arrangement by a (flexible) hose arrangement 11. A flexible hose arrangement 11 and / or the connection to the drain cover 40 is advantageous as the suction device 15 may be placed freely at the pool of water 30. This allows the greater flexibility in the installation of the recirculating shower system 10.

[0064] The drain cover 40 is advantageously removable such that it may be placed on top of the shower drain 20 when recirculation of water is desired, and removed from the shower drain 20 when recirculation of water is not desired, for cleaning, or when the recirculating shower system 10 is used for purposes unsuitable for the pool of water 30.

[0065] Fig. 3 shows a cross sectional view of a drain cover 40 arranged on a shower drain 20 according to some embodiments of the present disclosure. The drain cover 40 comprises a base part 100 having a thickness t. The base part 100 is advantageously flexible. This allows the base part 100 to flex, yield and closely (snuggly, fittedly, tightly) follow a surface area at the drain 20. The base part comprises a first surface 110 and an opposite second surface 120. One of the first surface 110 or the second surface 120 is configured to face the drain 20. In Fig. 3, the second surface 120 is shown facing the drain 20, but as will be clear from the present disclosure, the drain cover 40 may be arranged such that the first surface 110 faces the drain 20. A surface area of the base part 100 is advantageously larger than a surface area of drain 20 to ensure that the base part 100 covers the drain 20. It should be mentioned that it is not required that the base part 100 extend to, or beyond, an outline of the drain 20, but it is advantageous as it allows improved control of the pool of water 30.

[0066] In order to avoid that the depth d of the pool of water 30 exceeds a wanted depth, and to reduce a risk of flooding, the drain cover 40 is advantageously configurable to control the depth d of the pool of water 30. To this end, the drain cover 40 is provided with one or more overflow openings 45. The overflow opening 45 is arranged at distance d from a top surface 22 of the drain 20 that is equal to the depth d of the pool of water 30. The overflow opening 45 is advantageously configured to prevent the pool of water 30 from rising beyond the overflow opening 45. To this end, the overflow opening(s) 45 is / are large enough to accommodate the flow of water from the shower head 16. The overflow openings 45 provide a fluid path from the pool of water 30 to the drain 20.

[0067] The overflow opening 45 is advantageously defined by a flange arrangement 200 of the drain cover 40. The flange arrangement 200 define a lumen 203 (cavity) providing the fluid passage from the overflow openings 45 to the drain 20. That is to say, the overflow openings open up into the lumen 203 and the lumen 203 is, in Fig. 3, open toward the drain 20. The flange arrangement 200 extend from the first surface 110 of the base part 100. Advantageously, the flange arrangement 200 extend substantially perpendicularly from the first surface 110. In Fig. 3, the flange arrangement 200 extends a first height distance hl from the first surface 110 of the base part 100. The flange arrangement 200 forms a closed shape in a plane of the first surface 110. The base part 100 is open inside the flange arrangement 200 such that a fluid path is provided through the base part into the flange arrangement 200.

[0068] In some embodiments, an end of the flange arrangement 200 distal to the first surface 110 is open and the open end define the overflow opening 45.

[0069] In Fig. 3, the flange arrangement 200 comprises a first member 201 and a second member 202. In Fig. 3, the first member 201 is closer to the first surface 110 of the base part 100 than the second member 202. Further, in Fig. 3, at least one overflow opening 45 is provided between the first member 201 and the second member 202. This means that the depth d of the pool of water 30 will be determined by a distance between the top surface 22 of the drain 20 and a lowest point of a vertically upper edge of the first member 201.

[0070] It should be mentioned that the second member 202 may optionally be configured with an overflow opening 45 (two shown in Fig. 3) at an upper edge of the second member 202 providing a fluid path from the upped edge to the interior of the drain cover 40. These additional overflow openings 45 may be provided as safety measure in cases a flow of water into the pool of water 30 exceeds a capacity of the overflow opening 45 provided between the first member 201 and the second member 202. Such an overflow opening 45 will be at a height above the top surface 22 of the drain defined by the thickness t of the base part and the first height distance hl.

[0071] From Fig. 3, it has been taught that the depth d of the pool of water 30 is determined by the flange arrangement 200. Further, the depth d of the pool of water 30 may be determined by an engagement between the first member 201 and the second member 202. For instance, in Fig. 3, if the second member 202 is arranged to seal a top of the first member 201, the overflow openings 45 at the upper edge of the second member 202 will define the depth d of the pool of water 30.

[0072] By defining a depth d if the pool of water 30, it is implied that a portion of the water from the shower head 16 will overflow the pool of water 30 and exit to the drain 20. This means that, for a recirculating shower 10 according to the present disclosure, the recirculation is not a closed circulating system circulating the same water. Rather, the recirculating shower 10 of the present disclosure will receive both recovered water from the pool of water 30 and also hot and cold water from a fresh water supply. The recirculating shower 10 according to the present disclosure will mix the recovered water with hot and cold water from a fresh water supply to control a temperature and a flow of the water at the shower head 16.

[0073] The drain cover 40 of Fig. 3 is one exemplary embodiment. In the following, further exemplary embodiments of drain covers 40 and specific flange arrangements 200 will be presented. The skilled person will appreciate that most features presented with reference to specific embodiments of the drain cover 40 or the flange arrangement 200 may be suitably applied to other embodiments of the drain cover 40 and flange arrangement and are generally not tied to that specific embodiment.

[0074] Figs. 4a-b are perspective exploded views of a drain cover 40 according to some embodiments of the present disclosure. In Fig. 4a, the drain cover 40 is shown looking onto the first surface 110 of the base part 100 at an angle. In Figs. 4a-b, the base part 100 and the flange arrangement 200 are arranged along an axis X. The axis X is defined as an axis X that is normal to the top surface 22 of the drain 20 extending, when the drain cover 40 is arranged on top of the drain 20, through the base part 100 and the flange arrangement 200. In Figs. 4a-b, the first member 201 is arranged inside an opening of the base part 100 such that a substantially fluid tight seal is formed between a radial surface of the first member 201 facing the base part 100 and a radial surface of the opening of the base part 100. In Figs. 4a-b, the first member 201 and the second member 202 are configured to form a stepped twist and retain arrangement 210. The second member 202 is configured to engage the first member 201 along the axis X in a direction from the first surface 110 of the base part 100 to the second surface 120 of the base part 100. In Figs. 4a-b, the overflow openings 45 are provided in the second member 202. The overflow openings 45 are radial openings in the second member 202 arranged at region distal from the base part 100 when the second member 202 engages the first member 201. The lumen 203 of the flange arrangement 200 is defined by a radial surface of the second member 202 and, depending on the engagement between the first member 201 and the second member 202, a radial surface of the first member 201. In Fig. 4a, the drain cover 40 is shown looking into the first surface 110 of the base part 100 at an angle. In Fig. 4a, the drain cover 40 is shown looking into the opening of the base part from the first surface 110 of the base part 100 at an angle.

[0075] In Fig. 4b, the drain cover 40 is shown looking into the second surface 120 of the base part 100 at an angle. In Fig. 4b, the drain cover 40 is shown looking into the opening of the base part from the second surface 120 of the base part 100 at an angle.

[0076] As seen in Figs. 4a-b, the stepped twist and retain arrangement 210 functions by the second member 202 being inserted into the first member 201 and then rotated around the axis X to retain the position of the second member 202. A distance the second member 202 is inserted into the first member 201 will determine a location of the overflow openings 45 and thereby the depth 45 of the pool of water 30.

[0077] With reference to Figs. 5a and 5b, the stepped twist and retain arrangement 210 will be explained in further detail. Fig. 5a shows an isolated perspective view of the first member 201 introduced with reference to Figs. 4a-b. Fig. 5b shows an isolated perspective view of the second member 202 introduced with reference to Figs. 4a-b. The second member 202 in Fig. 5b is a mating member of the first member 201 in Fig. 5a. The stepped twist and retain arrangement 210 comprises features provided by both the first member 201 and the second member 202. It should be mentioned already now, that the arrangement of the features may very well be reversed such that the features of the stepped twist and retain arrangement 210 described with reference to the first member 201, may be provided by the second member 202 and vice versa.

[0078] In Fig. 5a, the first member 201 comprises a plurality of guide recesses 211. The guide channels are axial guide channels extending parallel to the axis X. The guide recess may extend on other directions along the axis X. The first member 201 in Fig. 5a further comprises a plurality of retaining recesses 212a, 212b, 212c, 212d. The retaining recesses 212a, 212b, 212c, 212d are distributed along the axis X. The retaining recesses 212a, 212b, 212c, 212d extend from the guide recesses 211 along a circumference of the first axially along provided at an inside of the first member 201. In Fig. 5a the retaining recesses 212a, 212b, 212c, 212d extend substantially perpendicularly from the guide recesses 211. This is one example, in some embodiments, the retaining recesses 212a, 212b, 212c, 212d extend at an angle from the guide recess that is not a right angle. Advantageously, the retaining recesses 212a, 212b, 212c, 212d extend angled towards, when the drain cover 40 is in use, the drain 20.

[0079] In Fig. 5a, four retaining recesses 212a, 212b, 212c, 212d are provided extending from each guide recess 211. Each retaining recess 212a, 212b, 212c, 212d is arranged at a different axial position. In Fig, 5a, the retaining recesses 212a, 212b, 212c, 212d extend in opposite directions from their associated guide recess 211.

[0080] In Fig. 5a, the first member 201 is provided with four guide recesses 211 distributed at equal distances to adjacent guide recesses 211 along the circumference of the first member 201. Each guide recess 211 is provided with four retaining recesses 212a, 212b, 212c, 212d.

[0081] In Fig. 5a, a first retaining recess 212a is provided at a first axial position extending in a first direction from the guide recess 211. A second retaining recess 212b is provided at a second axial position extending in a second direction from the guide recess 211. The second axial position is axially offset from the first position and the second direction is opposite the first direction. A third retaining recess 212c is provided at a third axial position extending in the first direction from the guide recess 211. The second axial position is axially offset from the second position by an offset equal to an offset between the first position and the second position. The second axial position is different from the first axial position. A fourth retaining recess 212d is provided at a fourth axial position extending in the second direction from the guide recess 211. The fourth axial position is axially offset from the third position by an offset equal to an offset between the first position and the second position. The fourth axial position is different from the second axial position.

[0082] The arrangement of the guide channels 211 and the retaining recesses 212a, 212b, 212c, 212d shown in Fig. 5a are exemplary arrangements. In some embodiments, the retaining recesses 212a, 212b, 212c, 212d may extend in the same direction. In some embodiments, fewer or less retaining recesses and / or guide recesses may be provided.

[0083] In Fig. 5b, the second member 202 is provided with a plurality of protrusions 215. The protrusions 215 extend radially in reference to the axis X. The protrusions 215 are configured with a, from the perspective of the second member 202, circumferential width extension that is equal to, or smaller than, a corresponding width extension of the guide recess 211 of the first member 201. Correspondingly, the protrusions 215 are configured with a, from the perspective of the second member 202, axial height extension that is equal to, or smaller than, a corresponding height extension of the retaining recesses 212a, 212b, 212c, 212d of the first member 201. In Fig, 5b, the protrusions 215 are arranged at an axial end of the second member 202 that is, when the second member engage the first member 201, proximal to the base part 100 of the drain cover 40.

[0084] In Fig. 5b, the second member 202 is shown with a plurality of radial overflow openings 45. In Fig. 5c, one example of the second member 202 is shown wherein the overflow openings 45 are facing along the axis X. That is to say, the overflow openings 45 are provided in an upper surface of the second member 202 providing a fluid path from the upped edge to the interior of the drain cover 40. This means that an upper surface (a surface facing the same direction as the first surface 110 of the base part 100) of the second member 202 in Fig. 5c is arranged the distance d (the depth d of the pool of water 30) from the top surface 22 of the drain 20.

[0085] In some examples, the radial overflow openings 45 of the second member in Fig. 5b may be combined with the axial overflow openings 45 of Fig. 5c.

[0086] A number of guide recesses 211 of the first member 201 is advantageously the same or more than a number of protrusions 215 of the second member 202.

[0087] In Fig. 5a, the guide recesses 211 and the retaining recesses 212a, 212b, 212c, 212d are formed as countersunk guide recesses 211 and retaining recesses 212a, 212b, 212c, 212d in an inner surface of the first member 201, i.e. a radial surface of the lumen 203. The protrusions 215 of the second member 202 are formed as extending radially from an outer surface of the second member 202, i.e. radial surface opposite a surface of the lumen 203. In some embodiments, this may be reversed such that the protrusions 215 extend radially from an inner surface of the second member 202 into the lumen 203, and the recesses 211, 212a, 212b, 212c, 212d are formed as countersunk recesses in an outer surface of the first member 201, i.e. a radial surface opposite the surface of the lumen 203.

[0088] Advantageously, the stepped twist and retain arrangement 210 is formed by the first member 201 or the second member 202 being provided with one or more guide recesses 211 extending along the axis X and provided with at least one retaining recess 212a, 212b, 212c, 212d extending circumferentially from the axial guide recess 211. The other of the first member 201 of the second member 202 is provided with at least one radial protrusion 215. The radial protrusion 215 is configured to mate with the one or more guide recesses and the at least one retaining recess 212a, 212b, 212c, 212d. The depth d of the pool of water 30 is determined depending on which of the retaining recesses 212a, 212b, 212c, 212d the radial protrusion 215 engages.

[0089] In Fig. 6, a perspective view looking into the first surface 110 of the base part 100 of a drain cover 40 according to some embodiments of the present disclosure is shown. In Fig. 6, the base part 100 and the flange arrangement 200 are arranged along the axis X. In Fig. 6, the first member 201 is arranged inside an opening of the base part 100 such that a substantially fluid tight seal is formed between a radial surface of the first member 201 facing the base part 100 and a radial surface of the opening of the base part 100. In Figs. 4a-b, the first member 201 and the second member 202 are configured to form a snap-lock arrangement 220. The second member 202 is configured to engage the first member 201 along the axis X in a direction from the first surface 110 of the base part 100 to the second surface 120 of the base part. In Fig. 6, the overflow openings 45 are provided either at an axial side of the second member 202 distal from the base part 100. That is to say, the second member 202 is open at both its axial ends defining a lumen 203 that is open at both its axial ends. As will be better seen in Fig. 7c, the overflow openings 45 may be provided as radial openings in an optional third member 104. The third member 104 is arranged to cover the overflow openings 45. The lumen 203 of the flange arrangement 200 is defined by a radial surface of the second member 202 and, depending on the engagement between the first member 201 and the second member 202, a radial surface of the first member 201.

[0090] With reference to Figs. 7a and 7b, the snap-lock arrangement 220 will be explained in further detail. Fig. 7a shows an isolated perspective view of the first member 201 introduced with reference to Fig. 6. Fig. 7b shows an isolated perspective view of the second member 202 introduced with reference to Fig. 6. The second member 202 in Fig. 7b is a mating member of the first member 201 in Fig. 7a. The snap-lock arrangement 220 comprises features provided by both the first member 201 and the second member 202. It should be mentioned already now, that the arrangement of the features may very well be reversed such that the features of the snap-lock arrangement 220 described with reference to the first member 201, may be provided by the second member 202 and vice versa.

[0091] In Fig. 7a, the first member 201 is provided with a plurality of grooves 221. The grooves 221 extend circumferentially. The grooves 221 are parallel and axially distributed. The grooves 221 are axially aligned.

[0092] In Fig. 7a, the first member 201 is further provided with optional guide recesses 225. The guide recesses 225 extend axially along the entire extension of the first member 201. In Fig. 7a, the first member 201 is provided with two guide recesses 225. In some embodiments, the first member 201 is provided with one guide recess 225. In some embodiments, the first member 201 is provided with more than two guide recesses 225.

[0093] In some embodiments, the guide recess 225 extend axially from a first axial end along a part of the extension of the first member 201. In this embodiment, the axially open end of the guide recess 225 is configured to face in a direction of first surface 110 of the base part 100.

[0094] In Fig. 7b, the second member 202 comprises two pairs of slots 223. Each slot

[0095] 223 extend axially from a first axial end of the second member 202 towards an opposite axial end of the second member 202. Each slot 223 extend a fraction of an axial extension of the second member 202. Between each pair of slots 223, a flexible member

[0096] 224 is formed. The flexible member 224 is configured to, by means of the associated pair of slots 225, flex radially. The flexible member 225 is provided with a circumferential protrusion 222. The protrusion 222 are configured with a, from the perspective of the second member 202, circumferential width extension that is equal to, or smaller than, a corresponding width extension of the groove 221 of the first member 201. Correspondingly, the protrusion 222 is configured with a, from the perspective of the second member 202, axial height extension that is equal to, or smaller than, a corresponding height extension of the groove 221 of the first member 201.

[0097] Advantageously, a shape of the protrusion 222 is configured to mate with a shape of the groove 221. In Figs. 7a-b, this is provided by the groove 221 being formed as a triangular recess in a surface of the first member 201 and the protrusion 222 being formed as a triangular protrusion in a surface of the second member 202.

[0098] In Fig. 7b, the second member 202 is further provided with optional guide protrusions 226. The guide protrusions 226 are radial protrusions. In Fig. 7b the guide protrusions 226 extend axially along the second member 202. The guide protrusions 226 are configured to mate with the guide recesses 225 of Fig. 7a. A number of guide recesses 7a of the first member 201 is preferably more or the same as a number of guide protrusions 226 of the second member 202.

[0099] In Fig. 7a, the grooves 221 and the guide recesses 225 (if present) are provided in a radially inner surface of the first member 201, i.e. a radial surface of the lumen 203. The protrusions 222 and the guide protrusions 226 (if present) of the second member 202 are formed as extending radially from a radially outer surface of the second member

[0100] 202, i.e. radial surface opposite a surface of the lumen 203. In some embodiments, this may be reversed such that the protrusions 222 and the guide protrusions 226 extend radially from an inner surface of the second member 202 into the lumen 203, and the grooves 221 and the guide recesses 225 are formed as countersunk recesses in an outer surface of the first member 201, i.e. a radial surface opposite the surface of the lumen

[0101] 203.

[0102] Advantageously, the snap-lock arrangement 220 is formed by the first member 201 or the second member 202 being provided with one or more flexible members 224 comprising at least one protrusion 222. The other of the first member 201 or the second member 202 is provided with a plurality of circumferential grooves 221. The circumferential grooves 221 are configured to be matingly engaged by (e.g. located into) the protrusion 222. The depth d of the pool of water 30 is determined depending on which of the grooves 221 the protrusion 222 engages.

[0103] In Fig. 7b, the second member 202 is shown as an open cylinder where the overflow opening 45 is defined at one axial end of the second member 202. In some embodiments, the overflow openings 45 may be radial openings as shown in Fig. 4b.

[0104] As seen in Fig. 7c, the overflow openings 45 may be provided as radial openings in the optional third member 104. The third member 104 is arranged to cover the overflow openings 45 of the second member 202 in Fig. 7b. The third member 104 comprises an axial support surface 228 configured to contact an upper surface 229 (see Fig. 7b) of the second member 202. The radial overflow openings 45 are provided in a radial surface formed between the axial support surface and a closed axial end of the third member 104. The closed axial end is configured to be distal to the second member 202 when the third member 104 engages the second member 202.

[0105] The closed axial end may in some embodiments be provided with further overflow openings 45.

[0106] The third member 104 is advantageous as it presents a more visually pleasing surface than an open end of the second member 202. Further to this, the third member 104 is advantageous as its closed axial end reduces a risk of injury and pain if a person taking a shower should accidently step on the flange arrangement 200 of the drain cover 40.

[0107] Regardless of embodiment, an axial surface of the flange arrangement 200 facing away from the base part 100 is advantageously smooth. A smooth surface reduces a risk of injury and pain if a person taking a shower should accidently step on the flange arrangement 200 of the drain cover 40.

[0108] In Fig. 8, a flange arrangement 200 is shown in an isolated perspective view. In Fig. 8, the flange arrangement 200 comprises a first member 201 and a second member 202. The first member 201 is configured to be connected to the base part 100. The second member 202 is configured to engage the first member 201 such that a lumen 203 is formed from an overflow opening 45 of the second member 203 to the drain 20. In Fig. 8, the overflow opening 45 is provided as an opening in an axial surface of the second member 202 that is distal from the first member 201. Additionally, and / or alternatively, one or more radial overflow openings 45 may be provided in the second member 202.

[0109] In Fig. 8, the engagement of the first member 201 by the second member 202 is provided by a threaded arrangement 230. To this end, the first member 201 and the second member 202 are both provided with circumferential threads 231, 232. In Fig. 8, a radial surface of the lumen 203 of the first member 202 is provided with an inner thread 232, a female thread 232. A radial surface of the second member 202 facing away from the lumen is provided with an outer thread 231, a male thread 231. In Fig. 8, the second member 202 may be rotated to threadedly engage the first member 201 and extend into the first member 201. By rotation of the second member 202 in relation to the first member 201, the depth d of the pool of water 30 may be controlled.

[0110] In some embodiments, the opposite threading arrangement to that of Fig. 8 may be provided. In such embodiments, a radial surface of the lumen 203 of the second member 202 is provided with an inner thread 232. A radial surface of the first member 202 facing away from the lumen 203 is provided with an outer thread 231. In such embodiments, the second member 202 may be rotated to threadedly engage the first member 201 to control an extension of the first member 201 into the second member 202.

[0111] Advantageously, the threaded arrangement 230 is formed by the first member 201 or the second member 202 being provided with a radially circumferential male thread 231. The other of the first member 201 or the second member 202 is provided with a radially circumferential female thread 232. The depth d of the pool of water 30 is determined depending on a number of turns the first member 20 land the second member 202 have threadedly engaged.

[0112] In Fig. 9 a flange arrangement 200 is shown in an isolated perspective view. In Fig. 9, the flange arrangement 200 comprises a first member 201, a second member 202 and a plurality of intermediate members 205. The first member 201 is configured to be connected to the base part 100. The second member 202 is configured to engage one of the intermediate members 205 of the plurality of intermediate members 205. The first member 201 is configured to engage one of the intermediate members 205 of the plurality of intermediate members 205. The engagement of the first and second members 201, 202 with the intermediate members 205 is such that a lumen 203 is formed from an overflow opening 45 of the second member 203 to the drain 20.

[0113] In Fig. 9, three intermediate members 205 are provided axially between the first member 201 and the second member 202. In some embodiments, only one intermediate member 205 is provided axially between the first member 201 and the second member 202. In some embodiments, two, four or more intermediate members 205 are provided axially between the first member 201 and the second member 202. The first member 201 and the second member 202 may be configured to sandwich one or more intermediate members 205. The intermediate member 205 will, in such embodiments, act as a distancing device, distancing the second member 202 from the first member 201 by a distance corresponding an axial length of the intermediate member(s) 205 arranged between the first and second members 201, 202. In such embodiments, a circumference of the intermediate member 205 may be substantially the same as a circumference of the first member 201 and a circumference of the second member 202.

[0114] In some embodiments, the drain cover 40 is provided with a flange arrangement comprising a plurality of intermediate members 205. An axial extension of each of plurality of intermediate members 205 may be equal or different. The depth d of the pool of water 30 is determined by the number or and / or the axial extension of the intermediate member(s) 205 sandwiched between the first member 201 and the second member 202. Advantageously, each sandwiched intermediate member 205 is retained in engagement with two of the first member 201, the second member 202or an adjacent intermediate member 205. Each sandwiched intermediate member 205 may be retained in engagement with two of the first member 201, the second member 202or an adjacent intermediate member 205 by means of e.g. a snap-lock engagement, a bayonet engagement, a press-fit engagement, etc.

[0115] In Fig. 9, a circumference of an intermediate member 205 adjacent to the first member 201, is smaller than the circumference of the first member 201. Accordingly, the circumference of the second member 202 is smaller than a circumference of an intermediate member 205 arranged adjacent to the second member 202 between the second member 202 and the first member 201. In the embodiment in Fig. 9, each smaller member 202, 205 may be configured to extend into the adjacent larger member 201, 205. That is to say, a smaller member 202, 205 is a member having a circumference that is smaller than an inner circumference of an axial opening of the adjacent larger member 201, 205. This will provide a telescopic arrangement 240. That is to say, the smaller circumference members 202, 205 are configured to axially slide into adjacent larger circumference members 201, 205. In some embodiment, the telescopic arrangement 240 is provided by the second member 202 being configured to axially slide into the first member 201. In some embodiments, the telescopic arrangement 240 is provided by the second member 202 being configured to axially slide into an intermediate member 205 and the intermediate member is configured to axially slide into the first member 205. Regardless of the number of intermediate members 205, if any, the engagement of the first member 201 by the second member 201 is provided at least partly by telescopic arrangement 240 of the first member 201 and the second member 202.

[0116] Advantageously, the telescopic arrangement 240 is formed by the first member 201 or the second member 202 being provided with an outer circumference that is smaller than an inner circumference of an adjacent one of the first member 201, the second member 202 or an intermediate member 205 arranged between the first member 201 and the second member 202. The depth d of the pool of water 30 is determined depending on an axial distance the first member 201 or the second member 202 is axially slid into the adjacent one of the first member 201, the second member 202 or the intermediate member 205.

[0117] Regardless of how the first member 201 and the second member 202 engage to determine the depth d of the pool of water 30, it may be advantageous to ensure that the depth d is not mistakenly changed. To this end, a locking arrangement 47 such as the one shown in Fig. 10 may be provided. The locking arrangement locks the engagement of the first member 201 and the second member 202 preventing a change in their relative positions.

[0118] In Fig. 10 the locking arrangement 47 is in the form of a screw extending radially through the base part 100, the first member 201 and onto an outer radial surface of the second member 202. This is one example, additionally, or alternatively, the locking arrangement 47 may also extend through the second part 202. Additionally, or alternatively, one or more locking arrangements may be through-going pins extending through the lumen 203 (not indicated in Fig. 10) and two points of the inner radial surfaces of the first member 201 and the second member 202 respectively.

[0119] As explained, the drain cover 40 is configured to be placed on top of a drain 20 to form a pool of water 30 by the drain 20. The drain cover 40 may be removed by simply lifting the drain cover 40 from the drain 20. The drain cover 40 is generally hidden by the pool of water 30 and form a tight fit to the top surface 22 of the drain 20. In order to simplify the removal of the drain cover 40 and to ensure a secure grip of the drain cover 40, the drain cover 40 may optionally comprise a grip member 48. The grip member 48 is advantageously formed from the base part 100 but may be provided as a separate member of the drain cover 40. In Fig. 3, the grip member 48 shown extending axially from the base part 100. In Figs. 4a, 4b, 6 and 10, the grip member 48 is shown extending radially from the base part 100. A radial grip member is advantageous as it provides a comparably flat surface in case someone should accidentally step on the grip member 48. Regardless of where and how the grip member 48 is arranged, it simplifies the removal of the drain cover 40 from the drain 20.

[0120] Further to this, as the drain cover 40 will become wet during use, it is advantageously to, at least occasionally, ensure that the drain cover 40 is dried to avoid buildup of grime and mold. In order to simplify drying of the drain cover 40, it may optionally be provided with a hanger member 49. The hanger member 49 is configured to facilitate hanging of the drain cover 40 allowing water to drip from the drain cover and increase a chance of air contacting all surfaces of the drain cover 40. In Figs. 4a, 4b, 6 and 10, the hanger member 49 is provided as an axial through going hole in the base part 100. As seen in Figs. 4a, 4b, 6 and 10, the hanger member 49 may be comprises in the grip member 48.

[0121] In some embodiments (not shown) the hanger member 49 is provided as a hook element of the base part 100.

[0122] As mentioned, the drain cover 40 is configured to be placed on top of the drain 20. A maximum flow of water, in e.g. cubic meter per second (m3 / s) through the flange arrangement 200 to the drain 20 will depend partly on a size of the overflow openings 45 and the lumen 203. However, it may be that the base part 100 covers a portion of the drain 20 such that the maximum flow of water is reduced by the drain 20 not being able to handle the flow from the lumen 203.

[0123] The above issue may be mitigated, or at least reduced by providing drain protrusions 125 as shown in Fig. I la. The drain protrusions 125 are provided between the base part 100 and the drain to ensure that a larger portion of the top surface 22 of the drain is available to accept water. The drain protrusion 125 are advantageously formed integrally with the base part 100 but may be provided as e.g., removable pins extending into the base par 100 or as a separate stand to be placed between the drain 20 and the drain cover 40.

[0124] In Fig. 1 lb, an advantageous example of a base part 100 comprising drain protrusion 125 is shown. The drain protrusions 125 are radial protrusion protruding from the second surface 120 of the base part 100. In Fig. 1 lb, the drain protrusions 125 are formed with an increasing lateral extension in a radial direction towards the lumen 203. The increase in lateral extension may be linear or curved depending on a desired shape of the first surface 110 of the base part 100. The drain protrusions 125 in Fig. 1 lb provide a stable foundation of the base part 100 to the drain 20 without reducing the drain’s capacity to accept water.

[0125] However, as shown in Fig. 12, in some embodiments, the above mentioned problem may be mitigated or addressed by placing the drain cover 40 such that the second side 120 of the base part 100 face the drain 20. This means that the flange arrangement 200 will be arranged between the base part 100 and the drain 20 effectively distancing a portion of the base part 100 from the drain 20. Also in this arrangement, the depth d of the pool of water 30 is determined according the teachings of the present disclosure.

[0126] Some drains 20 may be comparably large requiring a correspondingly large drain cover 40. For all recirculating showers 10 in general, but specifically for recirculating showers 10 wherein the drain 20 covers a substantial portion of the floor, it may be advantageous to provide the drain cover 40 with a non-slip pattern 117 such as the one shown in Fig. 13. The non-slip patterns 117 may be any suitable non-slip patterns and may be formed, as in Fig. 13 from the base part 100. In Fig. 13, the first surface 110 of the base part 100 is provided with a plurality of ridges 117’ and valleys 117” provided between the ridges 117’ forming the non-slip pattern 117.

[0127] In some embodiments, not shown, the non-slip pattern may, additionally, or alternatively, be provided on the second surface 120 of the base part 100. In some embodiments, the non-slip pattern 117 may be applied onto the base part 100. The non-slip pattern 117 is advantageously applied as a coating to the first surface and / or the second surface 120 of the base part 100.

[0128] It should be mentioned that having a non-slip pattern 117 on a surface 110, 120 of the base part 100 facing the drain 20 may be advantageous as it prevents the drain cover 40 from being unintentionally shifted along the floor of the recirculating shower 10.

[0129] As mentioned, the recirculating shower 10 comprises a suction device 15 configured to recover water from the pool of water 30. In order for the suction device 15 to operate as efficiently as possible, it is advantageous if the suction device 15 is arranged to suck substantially only water. If the suction device 15 is placed distal from the drain 20, the pool of water 30 required will be deep compared to if the suction device 15 is placed at the drain 20.

[0130] The drain cover 40 shown in Fig. 14 is configured to ensure that the suction device 15 is placed at a suitable position. In Fig. 14, the drain cover 40 is provided with a suction port 43. The suction device 15 is connectable to the suction port 43 of the drain cover 40. In Fig. 14, the suction port 43 is fluidly connected to channels 44. Water may flow into the channels 44 through one or more inlets 41. In Fig. 14, the channels 44 are internal to the base part 100, i.e. between the first surface 110 and the second surface 120. In Fig. 14, the inlets 41 are axial. In Fig. 14 the suction port 43 is provided in the base part 100.

[0131] In some embodiments (not shown), the suction port 43 and associated inlets 41 and channels 44 may be provided as a separate assembly at the first surface 110 of the base part 100.

[0132] In some embodiments (not shown), the suction port 43 is configured as a retaining member configured to retain the suction device 15 at the drain cover 40. In such an embodiment, one or more inlets 41 may be provided in the suction port 43. This allows the suction device 15 to be placed at the drain 20 without having to provide separate channels 44 for connecting inlets 41 to the suction port 43. In Fig. 15, an advantageous embodiment of the recirculating shower 10 is shown. In this embodiment, the drain cover 40 is a drain cover provided with a suction port 43. The suction device 15 is connected to the suction port 43.

[0133] Modifications and other variants of the described embodiments will come to mind to one skilled in the art having benefit of the teachings presented in the foregoing description and associated drawings. Therefore, it is to be understood that the embodiments are not limited to the specific example embodiments described in this disclosure and that modifications and other variants are intended to be included within the scope of this disclosure. For example, while embodiments of the invention have been described with reference a drain cover for a recirculating shower, persons skilled in the art will appreciate that the embodiments of the invention can equivalently be applied to other water recovery systems or arrangements wherein a controlled pool of water is advantageous. Furthermore, although specific terms may be employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation. Therefore, a person skilled in the art would recognize numerous variations to the described embodiments that would still fall within the scope of the appended claims. Furthermore, although individual features may be included in different claims (or embodiments), these may possibly advantageously be combined, and the inclusion of different claims (or embodiments) does not imply that a combination of features is not feasible and / or advantageous. In addition, singular references do not exclude a plurality. Finally, reference signs in the claims are provided merely as a clarifying example and should not be construed as limiting the scope of the claims in any way.

Claims

CLAIMS1. A recirculating shower system (10) comprising a water recirculation arrangement (12), a suction device (15) configured to recover water from a pool of water (30) at the recirculating shower system (10), a shower head (16) configured to provide water into the pool of water (30) and a drain cover (40) for removable placement on top of a shower drain (20) to form the pool of water (30) having a configurable depth (d), the drain cover (40) comprising a flexible base part (100) and a flange arrangement (200) extending from the flexible base part (100) and being configured to define an overflow opening (45) at a, from a top surface (22) of the drain (20), distance (d) corresponding to the depth (d) of the pool of water (30).

2. The recirculating shower system (10) of claim 1, wherein the flange arrangement (200) comprises a first member (201) and a second member (202), wherein the depth (d) of the pool of water (30) is determined by an engagement of the first member (201) by the second member (202).

3. The recirculating shower system (10) of claim 2, wherein the engagement of the first member (201) by the second member (202) is provided at least partly by a stepped twist and retain arrangement (210) of the first member (201) and the second member (202).

4. The recirculating shower system (10) of claim 2 or 3, wherein the engagement of the first member (201) by the second member (202) is provided at least partly by a snap-lock arrangement (220) of the first member (201) and the second member (202).

5. The recirculating shower system (10) of claim 2, wherein the engagement of the first member (201) by the second member (202) is provided at least partly by athreaded arrangement (230) of the first member (201) and the second member (202).

6. The recirculating shower system (10) of claim 2, wherein the flange arrangement (200) further comprises one or more intermediate members (205).

7. The recirculating shower system (10) of claim 6, wherein the engagement of the first member (201) by the second member (202) comprises sandwiching the one or more intermediate members (205) between the first member (201) and the second member (202).

8. The recirculating shower system (10) of claim 2 or 6, wherein the engagement of the first member (201) by the second member (202) is provided at least partly by telescopic arrangement (240) of the first member (201) and the second member (202).

9. The recirculating shower system (10) of any one of the preceding claims, further comprising a locking arrangement (47) configured to lock the flange arrangement (200).

10. The recirculating shower system (10) of any one of the preceding claims, wherein the flange arrangement (200) extends from a first surface (110) of the base part (100) and one or more drain protrusions (125) extend from an opposite second surface (120) of the base part (100).

11. The recirculating shower system (10) of any one of the preceding claims, wherein a first surface (110) of the base part (100) is provided with a non-slip pattern (117).

12. The recirculating shower system (10) of claim 11, wherein the non-slip pattern (117) is formed from the base part (100).

13. The recirculating shower system (10) of claim 11, wherein the non-slip pattern (117) is a coating applied to the first surface (110) of the base part (100).

14. The recirculating shower system (10) of any one of the preceding claims, further comprising one or more openings (41) arranged at a second height distance (h2) below the distance (d) between the overflow opening (45) and the top surface (22) of the drain (20), at least one of the one or more openings (41) being connectable to the suction device (15) of the recirculating shower system (10).

15. The recirculating shower system (10) of any one of claims 2 to 14, wherein the first member (201) of the flange arrangement (200) is integral with the flexible base part (100).

16. The recirculating shower system (10) of any one of the preceding claims, wherein the drain cover (40) further comprises a grip member (48).

17. The recirculating shower system (10) of any one of the preceding claims, wherein the drain cover (40) further comprises a hanger member (49).

18. The recirculating shower system (10) of claim 16 and 17, wherein the grip member (48) is the hanger member (49).

19. The recirculating shower system (10) of any one of the preceding claims, wherein the suction device (15) is connectable to the drain cover (40).