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EP-4592474-B1 - SWIMMING POOL FILTER TANK PROVIDED WITH A BRANCH TAP FOR INJECTING RECOVERY WATER

EP4592474B1EP 4592474 B1EP4592474 B1EP 4592474B1EP-4592474-B1

Inventors

  • DRION, Lucas Lionel Florent

Dates

Publication Date
20260513
Application Date
20250110

Claims (9)

  1. A filtration block (10) for a swimming pool basin comprising: - a filtration tank (11) comprising a wall (14) delimiting an internal space, - at least one filter (16.1, 16.2) arranged inside the internal space in the filtration tank (11), characterized in that the filtration tank (11) has a connection piece for recovery water injection (30) in the wall (14) of the filtration tank (11), said connection piece for recovery water injection (30) being arranged upstream of the filter (16.1, 16.2), said connection piece for recovery water injection (30) being intended to be in fluidic communication with a water recovery tank (31), characterized in that : - a non-return valve (35) is mounted in series with the connection piece for recovery water injection (30) in order to avoid gravity draining of the swimming pool basin.
  2. The filtration block according to claim 1, characterized in that it comprises an overflow outlet (33) 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. The filtration block according to claim 1 or 2, characterized in that it comprises a connection fitting (40) mounted on the connection piece for recovery water injection (30) and to be connected to a water inlet pipe (36).
  4. The filtration block according to claim 3, characterized in that it comprises a recovery water injection pump (37) including an outlet to which the water inlet pipe (36) is connected.
  5. The filtration block according to claim 3 or 4, characterized in that the connection fitting (40) is a pipe union for facilitating the assembly/disassembly of the water inlet pipe (36).
  6. The filtration block according to any one of the claims 1 to 5, characterized in that the filter (16.2) has a hollow cylindrical shape.
  7. The 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. The filtration block according to any one of the claims 1 to 7, characterized in that it comprises a filtration pump (18) including a variable speed, multispeed, or fixed speed electric motor.
  9. An 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 connection piece for recovery water injection (30).

Description

The invention relates to a swimming pool filtration tank equipped with a recovery water injection connection. Filtration units are known to include a filtration tank containing at least one filter for filtering pool water. A pump, which can be used with a flow multiplier, creates a water flow within the pool basin and the filtration unit. To address environmental changes and the energy transition our society is undergoing, 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, approximately 5000 liters. Therefore, there is a need to avoid polluting and contaminating the pool water, which has already been filtered and treated, with reclaimed water. 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 and chemical consumption. The invention aims to effectively meet these needs by providing a filtration unit according to claim 1 for a swimming pool comprising: a filtration tank comprising a wall delimiting an internal space, at least one filter located 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, the block having a non-return valve being mounted in series with the recovery water injection branch so as to avoid a gravity draining of the swimming pool basin. The invention thus makes it possible, thanks to the injection point for recovered water, to connect the water recovery tank to the filtration unit via a pipe connected upstream of the filter so that the recovered 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. US 2 979 206 A discloses a filtration block according to the preamble of claim 1. Also WO 2022/023826 A1 , WO 2012/021935 A1 , US 2006/102541 A1 , US 11 111 683 B1 And FR 3 090 715 A1 disclose prior art filtration blocks. 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. According to the invention, a non-return valve is mounted in series with the recovery water injection connection in order to prevent gravity draining of the swimming pool basin. According to one embodiment of the invention, said filtration block includes a connection fitting mounted on the recovery water injection spigot for connection with a water inlet pipe. 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. According to one embodiment of the invention, the connection fitting is a union fitting to facilitate the assembly/disassembly of the water inlet pipe. According to one embodiment of the invention, the filter has a hollow cylindrical shape. According to one embodiment of the invention, the filter is preferably made of a sheet of non-woven material pleated in an accordion pattern. According to one embodiment of the invention, said filtration block comprises a filtration pump having a variable speed, multispeed, or fixed speed electric motor. 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 connection. 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. [ Fig. 1 ] There figure 1 is a front perspective view of a filtration block according to the invention; [ Fig. 2 ] There figure 2 is a rear perspective view of a filtration block according to the invention; [ Fig. 3 ] There figure 3 shows perspective views from two different angles of the same filtration tank equipped with a recovery water injection connection. Identical, similar or analogous elements retain the same reference from one figure to another. THE figures 1 and 2 The diagram shows a filtration unit 10 for a swimming pool 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 a material with a skimmer 13, preferably flared, 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