Swimming pool filtration tank equipped with a wastewater injection connection

Abstract

The invention relates mainly to a filtration unit for a swimming pool comprising: - a filtration tank (11) having a wall (14) delimiting an internal space, - at least one filter disposed inside the internal space of the filtration tank (11), and - a recovery water injection inlet (30) made in the wall (14) of the filtration tank (11), said recovery water injection inlet (30) being disposed upstream of the filter, said recovery water injection inlet (30) being intended to be in fluidic communication with a water recovery tank (31). Figure 3

Description

Title of the invention: Swimming pool filtration tank equipped with a recovery water injection fitting

[0001] The invention relates to a swimming pool filtration tank equipped with a recovery water injection connection.

[0002] Filtration units comprising a filtration tank containing at least one filter for filtering pool water are known. A pump, which can be used with a flow multiplier, creates a water flow within the pool basin and the filtration unit. In order to address environmental changes and the energy transition our society is currently experiencing, the applicant proposes a system for recovering pool overflow water and transferring it to a recovery tank with a capacity of several thousand liters, for example, on the order of 5000 L.

[0003] There is therefore a need to avoid polluting and soiling the pool water, which has already been filtered and treated, with water from the recovery system. This is both for the comfort of the pool owner and for environmental reasons, as it avoids treating water that has already been treated. Indeed, treating water that has already been treated leads to excessive electricity consumption and the overconsumption of chemicals.

[0004] The invention aims to effectively meet these needs by providing a filtration unit for a swimming pool comprising: - a filtration tank having a wall delimiting an internal space, - at least one filter disposed inside the internal space of the filtration tank, - the filtration tank having a recovery water injection branch made in the wall of the filtration tank, said recovery water injection branch being disposed upstream of the filter, said recovery water injection branch being intended to be in fluidic communication with a water recovery tank.

[0005] The invention thus makes it possible, thanks to the recovery water injection tap, to connect the water recovery tank to the filtration block via a pipe connected upstream of the filter so that the recovery water which will be used to fill the basin and which may be dirty, contain algae, etc., is directly filtered and treated before supplying the rest of the pool basin containing clean water.

[0006] According to one embodiment of the invention, said filtration block includes an overflow outlet made in the wall of the filtration tank, said overflow outlet being intended to be in fluidic communication with the water recovery tank.

[0007] According to one embodiment of the invention, a non-return valve is mounted in series with the recovery water injection connection so as to prevent gravity draining of the swimming pool basin.

[0008] According to one embodiment of the invention, said filtration block includes a connection fitting mounted on the recovery water injection fitting for connection with a water inlet pipe.

[0009] According to one embodiment of the invention, said filtration block includes a recovery water injection pump having an outlet to which the water inlet pipe is connected.

[0010] According to one embodiment of the invention, the connection fitting is a union fitting to facilitate the assembly / disassembly of the water inlet pipe.

[0011] According to one embodiment of the invention, the filter has a hollow cylindrical shape.

[0012] According to one embodiment of the invention, the filter is preferably made of a sheet made of a non-woven material pleated in an accordion style.

[0013] According to one embodiment of the invention, said filtration block comprises a filtration pump having a variable speed, multispeed, or fixed speed electric motor.

[0014] The invention also relates to an assembly comprising a filtration block as previously defined and a water recovery tank in fluidic communication with the recovery water injection tap.

[0015] The invention will be better understood upon reading the following description and examining the accompanying figures. These figures are given only to illustrate, but in no way limit, the invention.

[0016] [Fig-1] The [Fig. 1] is a front perspective view of a filtration block according to the invention;

[0017] [Fig.2] Fig.2 is a rear perspective view of a filtration block according to the invention;

[0018] [Fig.3] Fig.3 shows perspective views from two different angles from the same filtration tank equipped with a port for injecting recovered water.

[0019] Identical, similar or analogous elements retain the same reference from one figure to another.

[0020] Figures 1 and 2 show a swimming pool filtration unit 10 comprising a filtration tank 11 having a wall 14, in particular cylindrical in shape, delimiting an internal space. The wall 14 of the filtration tank is made of material with a skimmer 13, preferably flared in shape, having an opening 12 leading into a volume of the swimming pool. The opening 12 can be closed by a pivoting flap. Alternatively, the skimmer 13 is attached to and fixed on the wall 14 of the tank 11. The wall 14 of the filtration tank 11 has On its upper end, there is an access opening 15 intended to be located at ground level around the pool. The access opening 15 is intended to be closed by a removable hatch (not shown).

[0021] At least one filter is disposed within the internal space of the filtration tank 11. Advantageously, as can be seen in [Fig. 2], a first filter 16.1 provides coarse filtration, allowing particles smaller than a fraction of a millimeter to pass through, based on a screen filter principle. For example, this first filter 16.1 consists of a molded filter basket with orifices formed between ribs of injected plastic material. In addition, a second filter 16.2, providing fine filtration, has a hollow cylindrical shape. This cylindrical filter 16.2 preferably consists of a sheet of accordion-pleated nonwoven material. The sheet is held between two circular flanges and surrounded by an outer nonwoven material. Upstream of the first filter 16.1, a pre-filtration means may be provided, such as a mesh with orifices of 0.1 to 0.5 mm, for example 0.3 mm. Alternatively, filter 16.2 can be made from a woven material.

[0022] A first conduit 17 connected to the filtration tank 11, through which a primary water flow circulates, is connected to an inlet of a pump 18, which has an outlet connected to an injection inlet 19 of a flow multiplier 21. A second conduit 22 from the filtration tank 11, through which a secondary water flow circulates, is connected to a suction inlet 24 of the flow multiplier 21. The flow multiplier 21, preferably of the Venturi type, comprises, in a manner known per se, a converging section and a diverging section to accelerate the water flow generated at its outlet 25. This creates a water circulation current within the swimming pool. The pump 18 may have a variable-speed, multi-speed electric motor to vary the intensity of the water flow within the pool, or alternatively, a fixed-speed motor.

[0023] The recovery conduit 13 and the outlet 25 of the flow multiplier can open into a plate 26 integrated into a wall 27 of the pool or into two separate plates.

[0024] Furthermore, as can be seen in [Fig. 3], the filtration tank 11 has an overflow outlet 33 formed in the wall 14 of the filtration tank 11. The overflow outlet 33 is intended to be in fluidic communication with a water recovery tank 31. To this end, the overflow outlet 33 has a fitting to which a water outlet pipe is connected, leading to the water recovery tank 31. The overflow outlet 33 is located in the upper part of the filtration tank 11, upstream of the filter 16.1 and / or the filter 16.2. The overflow outlet 33 can be associated with an adjustable-level overflow system 32 for setting a water level in the swimming pool as described in document FR3090715.

[0025] The filtration tank 11 also includes a recovery water injection port 30 made in the wall 14 of the filtration tank 11. The recovery water injection port 30 is located upstream of the filter 16.1 and / or the filter 16.2. The recovery water injection port 30 is intended to be in fluidic communication with a water recovery tank 31. The recovery water injection port 30 includes a through-hole made in the wall of the filtration tank 11. The through-hole may be associated with a conduit coming from the material with the wall 14.

[0026] A non-return valve 35 is mounted in series with the recovery water injection fitting 30 to prevent gravity drainage of the swimming pool basin. A connection fitting 40 is also mounted on the recovery water injection fitting 30 for connection with a water inlet pipe 36. The non-return valve 35 can be positioned downstream of the connection fitting 40 with respect to the direction of water flow inside the water inlet pipe 36.

[0027] A recovery water injection pump 37 has an inlet for fluid communication with the water contained in the water recovery tank 31. The pump 37 can be located inside the water recovery tank 31 or outside the water recovery tank 31. In this case, the inlet of the pump 37 is connected to the water recovery tank 31 by means of a pipe.

[0028] The recovery water injection pump 37 also has an outlet to which the water inlet pipe 36 is connected, which is connected to the recovery water injection fitting 30 via the connection fitting 40.

[0029] Advantageously, the connection fitting 40 is a union fitting to facilitate the assembly / disassembly of the water inlet pipe 36. The union fitting 40 has two tapped and / or threaded ends. The union fitting 40 is, for example, screwed onto a threaded area of ​​the wastewater injection fitting 30. Alternatively, the connection fitting 40 is a quick-connect snap fitting of the same type as those used with garden hoses.

[0030] During the filling of the swimming pool basin with recovered water, the recovered water injection pump 37 draws water from the recovery tank 37 via its inlet and discharges it via its outlet into the water inlet pipe 36, which carries the water to the filtration tank 11 via the recovered water injection port 30. The recovered water 30 is injected along the arrow Fl upstream of the filter 16.1, 16.2 of the filtration tank 11, as shown in [Fig. 3]. The dirty recovered water is thus filtered and treated before returning to the swimming pool basin containing clean water.

[0031] Of course, the preceding description has been given by way of example only and does not limit the scope of the invention, which would not be exceeded by replacing the various elements with any other equivalents.

[0032] Furthermore, the different features, variants, and / or embodiments of the present invention can be combined with each other in various ways, provided that they are not incompatible or mutually exclusive.

Claims

Demands

1. Filtration unit (10) for a swimming pool comprising: - a filtration tank (11) having a wall (14) delimiting an internal space, - at least one filter (16.1, 16.2) disposed inside the internal space of the filtration tank (11), characterized in that the filtration tank (11) has a recovery water injection branch (30) made in the wall (14) of the filtration tank (11), said recovery water injection branch (30) being disposed upstream of the filter (16.1, 16.2), said recovery water injection branch (30) being intended to be in fluidic communication with a water recovery tank (31), - a non-return valve (35) being mounted in series with the recovery water injection branch (30) so as to prevent gravity drainage of the swimming pool.

2. Filtration block according to claim 1, characterized in that it comprises an overflow outlet (33) made in the wall (14) of the filtration tank (11), said overflow outlet (33) being intended to be in fluidic communication with the water recovery tank (31).

3. Filtration block according to claim 1 or 2, characterized in that it comprises a connection fitting (40) mounted on the recovery water injection fitting (30) for connection with a water inlet pipe (36).

4. Filtration block according to claim 3, characterized in that it comprises a recovery water injection pump (37) having an outlet to which the water inlet pipe (36) is connected.

5. Filtration block according to claim 3 or 4, characterized in that the connection fitting (40) is a union fitting to facilitate the assembly / disassembly of the water inlet pipe (36).

6. Filtration block according to any one of claims 1 to 5, characterized in that the filter (16.2) has a hollow cylindrical shape.

7. Filtration block according to claim 6, characterized in that the filter (16.2) is preferably made of a sheet of accordion-pleated non-woven material.

8. 7 Filtration block according to any one of claims 1 to 7, characterized in that it comprises a filtration pump (18) comprising a variable speed, multispeed, or fixed speed electric motor.

9. Assembly comprising a filtration block defined according to any one of the preceding claims and a water recovery tank (31) in fluidic communication with the recovery water injection tap (30).

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