FR3053887A1 - FLUSHING BATH DEVICE WITH OVERFLOW - Google Patents

Abstract

The subject of the present invention is an overflow bubbler device comprising a basin (1, 2) delimiting a bath space (1d), a water and / or air circulation system (3) and, optionally, a frame (7). The basin (1, 2) comprises two sealed tanks one inside the other, leaving a buffer space between them, the peripheral edge of the inner tank (1) being separated, on all or part of its periphery, from the peripheral edge external container (2a) by a peripheral passage gap (6) communicating with the buffer space to let the water overflowing from the inner tray (1) to the buffer space.

Description

DESCRIPTION

The present invention relates to the field of balneotherapy and relates to an overflow whirlpool device.

In the field of balneotherapy, there are already known bubble baths, or bubble baths, more commonly called, in common parlance, spa or, for a bathtub equipped with a bubbling system, bubble bathtub, providing relaxing treatments and / or therapeutic.

Such a whirlpool bath comprises a basin constituted by a watertight tank, also called a watertight shell, more or less large internally delimiting a bath space intended to contain a certain volume of water and being equipped with a water circulation system and / or air suitable for withdrawing water from the bath space, then for filtering said water, then for reinjecting or discharging it into said bath space. It generally also includes a water heating system allowing the water to be brought to a certain temperature and to regulate it electronically. The injection of water, and possibly air, under pressure, into the bath space has the effect of creating eddies and / or bubbles which provide the user with a feeling of massage and well-being. on his body.

To this end, the water and / or air circulation system comprises at least one injection and / or delivery nozzle opening into the bath space and ensuring the injection and / or delivery of the water and / or air in the latter, at least one sampling mouth, also known by the name of suction plug, allowing the sampling, generally by suction, of the water contained in the bath space, at least one filter for the filtration of the withdrawn water, a water evacuation outlet for the emptying of the basin, a pipe connected to the said nozzles to carry out the circulation of the water between its withdrawal and the nozzles, a pump suction and / or discharge of water connected to said pipe to activate the circulation of water and, optionally an air pump to inject air into at least one of said nozzles.

The water injection function differs from the water delivery function in that the injection has the effect of creating a water jet, known as a massage jet, under pressure or resulting from a reduction in the power of the water jet emitted by the nozzle in the case of backflow. In both cases, injection and delivery, the water injected or

-2 driven back by each nozzle in the bath space comes from the bath space, after filtration, with a more or less strong pressure of the water jet depending on whether it is an injection nozzle or '' a discharge nozzle. Other known nozzles, connected to the air pump, make it possible to mix pressurized air with water in order to provide an even more pleasant massage effect.

The tray generally comprises a stepped or stepped profile forming seats allowing the user to sit, for example by means of a recess made or formed, generally centrally, at the bottom. To receive or house the nozzles, the tank is pierced with a multitude of holes each receiving one of said nozzles and at least one hole receiving one or one of the sampling outlets. The number of nozzles generally depends on the size of the basin and the power of the suction and / or discharge pump.

Current whirlpools, to allow the drainage or evacuation of water, include an evacuation mouth generally arranged in the bottom of the tank.

The pipeline is generally located around the tank, following the contours or the periphery of the latter and is made up of a plurality of suitable conduits or pipes, some of which are bent down or up. In general, such whirlpools include heating means, such as resistors, to heat the water to a certain temperature.

Subsequently, the term "water" will mean water which may or may not be charged with products, such as, for example, oxidizing products such as chlorine and / or bromine.

On the other hand, current hot tubs generally also comprise a supporting structure or frame supporting the tank and / or at least part of the circulation and / or air system. The container is generally supported by the chassis by resting on it, that is to say on its upper edge, by its upper peripheral edge adapted for this purpose by having a bearing surface extending outwards. .

Also known are overflow bubbling baths comprising an overflow gutter laterally extending at least part of the upper peripheral edge towards a separate tank and placed at a distance from the tank. The overflowing water is recovered in a closed circuit in the tank and then reinjected or discharged, by means of the pump, after

-3 filtration by means of the filter, in the bath space by the injection and / or delivery nozzles. Such an overflow gives the user an impression of infinity which meets a current need in terms of aesthetics and visual pleasure.

However, in current overflow hot tubs, the tank must have a large volume to contain the water from the overflow and the latter is either far from the basin, which requires a room or a space to receive the tank, or adjoining one side of the basin which increases the footprint of the whirlpool and its size on the site of use. On the other hand, it sometimes happens that a part of the body of users, in particular children, is in contact with the sampling mouth, and undergoes, by the effect of the aspiration of the sampling, more or less significant bruising. In addition, it is frequently observed problems of water leakage coming from the pipeline and / or from the water circulation system and in particular at the level of the connections between the nozzles and the pipes of the pipeline, which leads to overconsumption of water. water, since water cannot be recovered and / or water damage in the space surrounding the basin. In addition, residual water stagnates in the downward bent parts of the pipes or hoses when the bath is drained, which causes problems of odors relating to standing water and degradation of the pipes or hoses in periods of frost. when the baths are located outside.

The object of the present invention is to overcome at least one of these drawbacks.

As such, the overflow bubbling bath device, according to the present invention, comprising a basin delimiting a bath space, a water and / or air circulation system comprising at least one injection nozzle and / or pumping water and / or air into the bathroom, at least one mouth for taking water from the basin, at least one suction and / or water pump , if necessary at least one air pump, water filtration means and a pipe for the circulation of water and / or air, and possibly a chassis, is essentially characterized in that the basin comprises two tubs nested one inside the other, leaving a buffer space between them, namely an internal tub internally delimiting the bath space and comprising a bottom and a peripheral wall ending in an upper peripheral edge, called internal edge, and an external container comprising a

-4 bottom and a peripheral wall ending in an upper peripheral edge, called the outer edge, said inner tray being fitted into said outer tray and in that said inner edge is separated, over all or part of its periphery, from the outer edge by a peripheral passage interstice communicating with the buffer space to let the water overflowing from the internal tank pass into the buffer space.

The invention will be better understood from the following description, which relates to a preferred embodiment, given by way of nonlimiting example, and explained with reference to the appended schematic drawings, in which:

FIG. 1 is a perspective view of the whirlpool device according to the present invention, with a frame supporting the external tank and at least part of the water and air circulation system,

FIG. 2 is a cross-sectional view of the bath device shown in FIG. 1, without the chassis,

FIG. 3 is a perspective view of the bath device shown in FIG. 2,

- Figure 4 shows the bath device shown in Figure 1, without the chassis, and with a partial representation of the external tank to see part of the pipe located in the buffer space,

FIG. 5 is a perspective view of the bath device shown in FIG. 1 partially showing the internal tank and without the chassis,

FIG. 6 is a partial perspective view of the external tank of the bathing device shown in FIG. 1.

The figures show an overflow whirlpool device, according to the present invention, hereinafter called device, comprising a basin 1 and 2 delimiting a bath space ld, a water and / or air circulation system 3 comprising at least one injection and / or delivery nozzle 3a for water and / or air in the bath space ld, at least one mouth for taking water 3b from the basin, at least one water suction and / or discharge pump 3c, if necessary at least one 3d air pump, water filtration means 3e and a pipe 3f for the circulation of water and / or air and possibly a chassis 7.

Such a water and / or air circulation system 3 can also include means 3g for heating water, such as, for example, heating resistors.

In accordance with the present invention, the basin 1 and 2 comprises two trays fitted or arranged one inside the other leaving, or creating, between them a buffer space 5, namely an internal tank 1 internally delimiting the space of bath ld and comprising a bottom le and a peripheral wall lf ending in an upper peripheral edge, called internal edge la, and an external tank 2 comprising a bottom 2c and a peripheral wall 2d ending in an upper peripheral edge, called external edge 2a, said internal container 1 being fitted into said external container 2.

Thus, it will be understood that the internal tank 1 can be completely or partially waterproof, that is to say that the internal tank 1 may have leaks, originating, for example, from the structure of the internal tank 1 or its constituent material or nozzles housed therein or fluid connections between said nozzles and the pipe at their housing in said tank, which will flow into the buffer space 5 between the two tanks, that is to say inside the basin without flowing outside with the risk of degrading the environment. In addition, the water from the leaks and flowing into the buffer space 5 is not lost and can be recovered when the water is withdrawn from the buffer space 5 to be reinjected or discharged into the storage space. bain ld as we will see later. On the other hand, the external tank 2 can be provided to be completely sealed in order to avoid any leakage outside the basin.

It will also be understood that the dimensions and the shape of the space left or created between the two tanks 1 and 2 and forming the buffer space 5 depends, in particular, on the dimensions of each tank 1 and 2 and / or on their shape and / or their relative positioning one inside the other and one with respect to the other.

Still in accordance with the present invention, the internal edge 1a is separated, over all or part of its periphery, from the external edge 2a by a peripheral passage interstice 6 communicating with the buffer space 5 to let water overflowing from the internal tank 1 to buffer space 5.

In a preferred embodiment of the invention, the internal tank 1 may comprise at least one communication hole le, made through its peripheral wall lf, preferably near its bottom 2c, or through its bottom 2c (Figures 2 and 3), putting the buffer space 5

-6 in fluid communication with the ld bath space. Thus, when the bath space ld is filled with water, it flows through the or each communication hole, by the effect of the communicating vases, towards the buffer space 5 by filling it in turn. . Subsequently, once the bath space ld has been filled up to overflow, the buffer tank 5 is also supplied with overflow. Such fluid communication between the buffer space 5 and the bath space ld makes it possible to limit or eliminate the tensions due to the Archimedes thrust which are exerted on the internal tank 1 when the buffer space 5 is filled with water and which tend to lift and move the internal tank 1 relative to the external tank 2. In the case where the present invention does not provide at least one such communication hole, the latter may provide for the presence of elements connecting to securely connect the two tanks to each other. The present invention can also provide such connecting elements in combination with the communication hole (s).

If one refers in particular to FIGS. 2 and 3, it can be seen that the internal edge 1a and / or the external edge 2a can each comprise at least one return extending laterally between the two tanks 1 and 2 and that the gap passage 6 may have a baffle shape formed by said returns. The baffle thus forms, in the passage gap 6, a zigzag fluid flow passage. Each return or flap can be formed, for example, by folding the peripheral walls lf and 2d of the respective internal 1 and external 2 trays.

The device may further comprise a suitable prefiltration system and arranged to be able to perform a pre-filtration of the water upstream of the filtration means 3e of the water and / or air circulation system 3. The prefiltration system may include suitable upper prefiltration means arranged so as to be able to pre-filter the overflow water into the passage interstice 6 or downstream of the latter, preferably in the upper or upper part of the buffer space 5, and / or lower prefiltration means adapted and arranged so as to be able to pre-filter the water in the said communication hole (s) or downstream of this or these (these) in the buffer space 5, preferably in the lower or lower part of the latter.

In a preferred embodiment, the upper prefiltration means of the overflow water may comprise

-7 minus one net and / or at least one grid, not shown, and / or, where appropriate, the baffle forming the passage interstice 6 and / or the lower pre-filtration means of the water in the space of bain ld may comprise a net and / or a grid, not shown. The passage gap 6 in the form of a baffle can thus form one or more surfaces for receiving or retaining objects or elements which float on the surface of the water in the bath space, such as for example sheets or twigs, preventing them from falling into the buffer space 5 and reaching, for example, the sampling mouth 3b or an evacuation mouth 3c disposed in said buffer space 5, with the consequence of clogging them partially or totally. Likewise, the net and / or the grid which the upper prefiltration means can comprise also form surfaces for receiving or retaining such objects or elements. The net and / or the grid which the lower pre-filtration means can comprise also form surfaces for receiving or retaining objects or elements, such as for example pebbles, falling towards the bottom of the bath space. ld and being able to be driven, by the mud effect communicating between the two internal and external tanks 1 and 2, through the communication hole or holes le, preventing them from reaching, for example, the sampling mouth 3b or the discharge outlet 3c disposed in the buffer space 5.

The net or the grid of the upper prefiltration means can be fixed on the internal tank 1 and / or on the external tank 2, in the passage gap 6 or downstream of the latter. The grid or the net of the lower prefiltration means can be fixed in the corresponding communication hole and the net can be fixed, opposite said communication hole le, on the external or internal face of the bottom le or the peripheral wall lf of the internal tank 1.

If we refer in particular to FIGS. 2, 3 and 6, it can be seen that the or at least one of the sampling outlets 3b can be arranged so as to open into the buffer space 5 in order to draw up a sample of the water directly in said buffer space 5. For this purpose, the or each sampling mouth 3b of the buffer space 5 can be placed at or near the bottom 2c of the external container 2. The external container 2 can comprise at least one hole 2f receiving or forming the or one of the sampling outlets 3b and being able to be practiced in its peripheral wall 2d, more preferably at or near its

-8 background 2c. The or each sampling mouth 3b can consist, for example, of a strainer housed in the corresponding hole 2f which can be made through the peripheral wall 2d of the external tank 2, preferably near its bottom 2c.

The withdrawal of water directly from said buffer space 5 makes it possible to withdraw the water, to discharge it and / or reinject it into the bath space ld by means of the pipe 3f and the injection nozzles and / or discharge 3a, under the effect of the actuation of the suction and / or discharge pump 3c, at a sampling point remote from the bath space ld. Such an arrangement of the sampling mouth (s) 3b or of suction far from the bath space ld makes it possible to avoid any contact of a person with said sampling mouth 3b. On the other hand, in the case where the present invention provides at least one communication hole, it will be understood that, unlike a sampling mouth housed in the tank of a hot tub with conventional overflow and opening directly into its space bain ld, the or each communication hole le does not create a risk for a person contacting it, in particular a risk of aspiration, since it only ensures a fluid passage of water, under the effect of the column of water and vessels communicating between the ld bath space and the buffer space 5.

In an embodiment, not shown, of the method of withdrawing water from the basin, the present invention can provide that the or at least one of the suction and / or discharge pumps 3c of the water circulation system and / or air 3 consists of a submerged pump disposed in the buffer space 5, preferably on the bottom 2c of the external tank 2, and comprising a suction opening which can form the or one of the sampling outlets. In this case, the submerged pump can replace the sampling mouth 3b housed or formed in the peripheral wall 2d or the bottom 2c of the external tank or come in addition.

The internal container 1 can be fitted into the external container 2 by resting, by its bottom le, on the bottom 2c of the external container 2, preferably on the central part of the bottom 2c of the external container 2 (FIGS. 1, 2, 3, 4, 5).

In the case where the or at least one of the communication holes is made through the bottom of the internal tank 1, the bottom 2c of the external tank 2 may include a hollow part 2d which may extend under the bottom 2c from the internal tank 1 to the buffer space 5. In addition, the or each communication hole made through the bottom can

-9cap into or opposite said hollow part 2d so as to put in fluid communication the buffer space 5 with the bath space ld. It will be understood that the hollow part 2d makes it possible to prevent the communication hole made in the bottom of the internal tank 1 from being closed by the bottom 2c of the external tank 2 on which the bottom of the said internal tank 1 is directly based. To remedy this problem, in another embodiment, not shown, the present invention may provide that the device also comprises shims or the like which can be interposed between the bottom of the internal tank 1 and the bottom 2c of the tank. external 2 so that the space between the two tanks, into which the communication hole then opens out, forms part of the buffer space 5. In another embodiment not shown, still to respond to this problem, the internal tank 1 can rest on a shoulder made in the external tank 2 leaving a space between its bottom and the bottom of the external tank 2.

As can be seen in FIGS. 2, 3 and 6, the water and / or air circulation system 3 can further comprise at least one discharge mouth 3c formed in the peripheral wall 2d of the external tank 2 at its bottom 2c or practiced in the latter. In addition, the hollow part 2e can constitute a flow channel which can extend to the or at least one of the evacuation openings 3c. Such a channel can be provided to be sloped up to the drainage outlet (s) 3c concerned so as to allow an efficient flow of water during the emptying of the basin through the drainage outlet 3c.

In a preferred embodiment of the internal container 1, as can be seen in FIGS. 1, 2, 3, 4 and 5, the bottom 1a of the internal container 1 may comprise, preferably in its central part, a recess lg comprising a bottom which can form the bottom le of the internal tank 1 and a peripheral wall of recess lh which can extend downwards, that is to say towards the bottom le, the peripheral wall lf of the internal tank 1. Such a recess lg allows to form a seat in the bath space ld and to create a buffer space 5 of greater volume between the two tanks 1 and 2.

The internal edge 1a and the external edge 2a may each have an upper surface 1b or 2b forming their upper limit. The upper surface lb of the internal edge la of the internal tank 1 can then form the overflow surface of the water contained in the bath space

- 10ld. Preferably, to ensure a visual effect of infinity overflow, the upper surface 2b of the outer edge 2a can, over all or part of its periphery, be overhung by the upper surface of the inner edge la or located at the same level as this last.

The external tray 2 can be made from a flexible envelope such as for example, a flexible canvas or an envelope known by the English name of "liner", which can be fixed on a support structure. The supporting structure may consist, if necessary, of the chassis 7 of the device when the latter so provides. In this case, the internal container 1 can preferably be produced with a semi-rigid or rigid material. In another embodiment, the internal container 1 and the external container 2 can each be made from a semi-rigid or rigid material. A semi-rigid material can be, for example, a plastic or a composite, optionally with a glass fiber resin and a rigid material can be, for example, a concrete or a reinforced concrete, possibly covered with a coating or a top coat.

Referring to FIG. 1 and to FIG. 3, it can be seen that the device comprises the chassis 7 and that the latter can comprise an upper edge 7a of suspension. In addition, the external container 2 is made from a semi-rigid or rigid material and the external edge 2a of the external container 2 has a bearing surface 20a (FIG. 3) extending laterally towards the outside of the container. external 2. It can also be seen that the external tank 2 can be provided to rest, by its external edge (2a), that is to say by said bearing surface 20a, on the upper edge 7a of the chassis 7.

On the other hand, as can be seen in FIGS. 1, 2 and 3, the pipe 3f can comprise a plurality of pipes 30f, of which at least one of the pipes can be bent downwards and can comprise at least one evacuation hole, not shown, preferably of small dimensions, for example, for a round hole, of the order of a few millimeters in diameter, more preferably of the order of 1 to 3mm in diameter, made through the wall of the bent part, preferably at the lowest point of the latter, said discharge hole being able to open into the buffer space 5 opposite the bottom 2c of the external tank 2 to allow the flow of water passing through down and towards the bottom 2c of the external tank 2. The or each drainage hole thus makes it possible to evacuate the standing water remaining in the bent part when the basin is emptied or emptied and thus to avoid problems of odors because of the waters

- 11 residuals stagnating in the bent part or pipe degradation during periods of frost.

The present invention can also provide that the device further comprises centering means 20d making it possible to center the internal container 1 in the external container 2. The centering means 20d can be integrated in the internal container 1 and / or in the external container 2 or attached to each other by being fixed on the internal tank 1 and / or the external tank 2. The centering means 20d can be formed by deformations or bosses or re-entrant parts, extending in the buffer space 5, for example in the form of re-entrant corners, produced in the peripheral wall lf of the internal tank 1 and / or the peripheral wall 2d of the external tank 2. In another embodiment, if necessary, the centering means can be formed by at least one of the returns forming the baffle and having, at one or more points on its periphery, laterally projecting parts.

Of course, the invention is not limited to the embodiment described and shown in the accompanying drawings. Modifications remain possible, in particular from the point of view of the constitution of the various elements or by substitution of technical equivalents, without thereby departing from the scope of protection of the invention.

Claims (19)

1. Overflow bubbling bath device comprising a basin (1,2) delimiting a bath space (ld), a water and / or air circulation system (3) comprising at least one injection nozzle and / or for discharging (3a) the water and / or the air into the bath space (ld), at least one water withdrawal mouth (3b) in the basin (1,2), at least one water suction and / or delivery pump (3c), if necessary at least one air pump (3d), water filtration means (3e) and a pipe (3f) for the circulation of water and / or air, and, optionally, a frame (7), characterized in that the basin (1, 2) comprises two trays nested one inside the other, leaving between them a buffer space (5), namely an internal tank (1) internally delimiting the bath space (ld) and comprising a bottom (le) and a peripheral wall (lf) ending in an upper peripheral edge, said edge internal (the), and u n external tank (2) comprising a bottom (2c) and a peripheral wall (2d) ending in an upper peripheral edge, called the external edge (2a), said internal tank (1) being fitted into said external tank (2) and in that said internal edge (la) is separated, over all or part of its periphery, from the external edge (2a) by a peripheral passage interstice (6) communicating with the buffer space (5) to let the water pass overflowing from the internal tank (1) to the buffer space (5). 2. Overflow whirlpool device according to claim 1, characterized in that the internal tank (1) comprises at least one communication hole (le), made through its peripheral wall (lf), preferably near its bottom (2c), or through its bottom (le), putting the buffer space (5) in fluid communication with the bath space (ld). 3. Overflow whirlpool device according to any one of claims 1 to 2, characterized in that the internal edge (la) and / or the external edge (2a) each comprise at least one return extending between the two tanks (1, 2) and in that the passage gap (6) has a baffle shape formed by said returns. 4. Overflow whirlpool device according to any one of claims 1 to 3, characterized in that it further comprises a prefiltration system, not shown, adapted and arranged to be -13power carried out a pre-filtration of water upstream of the filtration means (3e) of the water and / or air circulation system (3) and in that said prefiltration system comprises suitable upper pre-filtration means and arranged so as to be able to carry out a prefiltration of the overflow water into the passage interstice (6) or downstream of the latter into the buffer space (5) and / or adapted lower prefiltration means and arranged so to be able to perform a pre-filtration of water in said communication hole (s) or downstream of this or these latter in the buffer space (5). 5. Overflow whirlpool device according to claim 4, characterized in that the upper prefiltration means of the overflow water comprise a thread and / or a grid and / or if necessary the baffle forming the interstice of passage (6). 6. Overflow bubbling bath device according to claim 4 or 5, characterized in that the lower pre-filtration means of the water in the bath space (ld) comprise a net and / or a grid. 7. Overflow whirlpool device according to any one of claims 1 to 6, characterized in that the or at least one of the sampling outlets (3b) is arranged so as to open into the buffer space ( 5) to take a water sample directly from said buffer space (5). 8. Overflow whirlpool device according to claim 7, characterized in that the or each sampling mouth (3b) of the buffer space (5) is arranged at or near the bottom (2c) of the external tank (2). 9. Overflow whirlpool device according to claim 8, characterized in that the external tank (2) comprises at least one hole (2c) receiving or forming the or one of the sampling outlets (3b) and made in its peripheral wall (2d), more preferably at or near its bottom (2c). 10. Overflow whirlpool device according to claim 8 or 9, characterized in that the or at least one of the suction and / or discharge pumps (3c) of the water circulation system and / or air (3) consists of a submerged pump arranged in the buffer space (5), preferably on the bottom of the external tank (2), and comprising a suction opening forming the or one of the sampling outlets (3b). -1411. Overflow whirlpool device according to any one of claims 1 to 10, characterized in that the internal tank (1) is fitted into the external tank (2) resting, by its bottom (le), on the bottom (2c) of the external tank (2), preferably on the central part of the bottom (2c) of the external tank (2). 12. Overflow whirlpool device according to claim 11 taken in combination with claim 2, characterized in that the or at least one of the communication holes (le) is formed through the bottom (le) of the tank internal and in that the bottom (2c) of the external tank comprises a hollow part (2d) which extends under the bottom (2c) of the internal tank (1) up to the buffer space (5) and in that the or each communication hole (le) made through the bottom (le) opens into said hollow part (2d) so as to put in fluid communication the buffer space (5) with the bath space (ld). 13. An overflow whirlpool device according to claim 12, characterized in that the water and / or air circulation system (3) further comprises at least one discharge mouth (3c) formed in the peripheral wall (2d) of the external tank (2) at its bottom (2c) or made in the latter and in that the hollow part (2e) constitutes a flow channel extending up to or minus one of the discharge outlets (3c). 14. Overflow whirlpool device according to any one of claims 1 to 12, characterized in that the bottom (the) of the internal tank (1) comprises, preferably in its central part, a recess (lg) comprising a bottom forming the bottom (le) of the internal tank (1) and a peripheral recess wall (lh) extending downwards the peripheral wall (lf) of the internal tank (1). 15. An overflow whirlpool device according to any one of claims 1 to 14, characterized in that the internal edge (la) and the external edge (2a) each have an upper surface (lb, 2b) forming its limit. upper and in that the upper surface (2b) of the outer edge (2a) is, over all or part of its periphery, overhung by the upper surface of the inner edge (la) or situated at the same level as the latter. 16. An overflow whirlpool device according to any one of claims 1 to 15, characterized in that the external tank (2) is produced from a flexible envelope, such as for example a - 15 flexible canvas or an envelope known under the English name of "liner", fixed on a supporting structure, the latter possibly consisting, if necessary, of the frame (7). 17. An overflow whirlpool device according to any one of claims 1 to 15, characterized in that it comprises the frame (7) which comprises an upper edge (7a) of suspension, the external tank (2) being made from a semi-rigid or rigid material and in that its external edge (2a) has a bearing surface (20a) extending laterally towards the outside of the external tank (2) which rests by said surface bearing (20a) on the upper edge (7a) of the frame (7). 18. An overflow whirlpool device according to any one of claims 1 to 17, characterized in that it further comprises centering means (20d) making it possible to center the internal tank (1) in the external tank ( 2), said centering means being integrated in the internal container (1) and / or in the external container (2) or attached between the latter by being fixed on the internal container (1) and / or the external container (2) . 19. Overflow whirlpool device according to claim 18, characterized in that the centering means (20d) consist of deformations or bosses or reentrant parts, extending in the buffer space (5) produced in the peripheral wall (lf) of the internal tank and / or the peripheral wall (2d) of the external tank (2) or, where appropriate, by at least one of the returns forming the baffle and having, at one or more points of its periphery, laterally projecting parts. 20. Overflow whirlpool device according to any one of claims 1 to 19, characterized in that the pipe (3f) comprises a plurality of pipes (30f), at least one of the pipes of which is bent towards the bottom and has at least one drainage hole (31 f) made through the wall of the bent part, preferably at the lowest point of the latter, said drainage hole opening into the buffer space (5) in look at the bottom (2c) of the external tank (2). 2/6 CN d E -O CM sst O CM Λ CM 2 © 3.0½ ³ Ai b