Classifications

• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
  • E04H4/00—Swimming or splash baths or pools
  • E04H4/12—Devices or arrangements for circulating water, i.e. devices for removal of polluted water, cleaning baths or for water treatment
  • E04H4/1209—Treatment of water for swimming pools
  • E04H4/1272—Skimmers integrated in the pool wall

Definitions

• the invention relates to a stepped fiitration device for the water of a pool, in particular a swimming pool, operating in a depression and disposed downstream of a skimmer mouth connected to the wall of the pool at the level of the surface.
• said fiiteration device having a first tank which comprises in its lower part an outlet orifice for discharging the water, and at its upper part a coupling connection with the mouthpiece of skimming, the first tank receiving a filter element disposed below the water level in the basin.
• the fiitration of swimming pools is traditionally carried out by a hydraulic process consisting of an electric pump that draws water from the basin by a surface skimmer called SKIMMER and / or by suction nozzles distributed on the walls or the bottom of the pool .
• this hydraulic pump is equipped with a pre-filter, usually a cylindrical basket, to protect the impeller of the pump.
• the pump after drawing the water inside the fiitration system, then pushes it through a filter (sand filter, diatomaceous earth filter or filter cartridge). Then the water is discharged into the basin by one or more pipes provided at the end of discharge nozzles.
• the filter is disposed upstream of the pump and downstream of the basket. Given that the pump, the filter, and the pre-filter are generally integrated in a room located at a distance and below the basin, the existing filtration devices have the disadvantage of not being autonomous and requiring a complex and expensive installation.
• filtration devices comprising a tubular body arranged vertically and which is connected in its upper part to the surface skimmer.
• the tubular body generally comprises superposed compartments including an upper compartment
• a pre-filter basket having an access cover, and a lower housing compartment of the filter element.
• the water is evacuated through a hole in the bottom of the cylindrical body.
• the access cover is accessible from the curbs around the basin.
• the aim of the invention is to propose a filtration device making it possible to increase the maintenance periodicity of its filtering elements, which is easy to maintain, and at the same time makes it possible to reduce the energy losses (due in particular to the clogging of the filtering elements). .
• this object is achieved by the fact that it comprises: at least one second tank closed in its upper part by a lid extending above the level of the water in the basin, said second tank being disposed downstream of the first tank and upstream of the pumping means, and being intended to receive a filter element having a fineness of retention greater than that of the filter element of the first tank, automatic means of setting the air arranged at the upper part of the second tank, said venting means being able to occupy:
• the device according to the invention makes it possible to obtain a staged filtration by implementing at least two filtering elements (in addition to the conventional pre-filter basket which is only optional) whose retention fineness is progressive.
• the filter element of the second tank is always immersed, which implies that the water level in the second tank is generally constant, regardless of the number of start-up cycle and stopping the pumping means. This result must be obtained despite the fact that the water supply of the second tank is well below the level of the water in said tank (which is necessary to limit the energy losses between the first tank and the second tank ).
• the automatic means that is to say without user intervention
• the upper part of the second tank are intended to maintain the water level in the second tank constant and stabilized on the water level of the basin.
• FIG. 1 is a perspective view of an example of a filtration device according to the invention
• FIG. 2 is a vertical sectional view of the device of FIG. 1 when the pumping means operate
• Figure 4 is a sectional view of the upper part of the second tank of the device of Figure 1 in situation of Figure 3
• FIG. 5 is a detail view, in section, of the breather means in the sealed position
• FIG. 6 is a sectional view of the upper part of the second trough of the device of FIG. 1. in the situation of FIG. 5, FIG.
• FIG. 7 is a detail view, in section, of the means for venting in the exhaust position
• FIG. 8 is a sectional view of the upper part of the second tank of the
• FIG. 9 is a detail view, in co-operation with FIG. upe, venting means in the intake position
• - Figure 10 is a sectional view of the upper part of the second tank of the device of Ia Figure 1 in the situation of Figure 9,
• the filtration device 1 allows staged filtration of water from a pool (not shown), including a pool. It operates in depression because it is intended to be disposed downstream of a skimming mouth 2 (or SKIMMER) connected to the wall of the pond at level of the surface of the water, and upstream of pumping means (not shown).
• the filtration device 1 comprises a first tank 3 which comprises in its lower part an outlet orifice 4 for discharging the water to a second tank 5.
• the upper part of the first tank 3 comprises
• the first tank 3 has a lower compartment 7 for detachably receiving a filter element 8 formed by a large filter basket whose retention fineness is 500 microns.
• the filter element 8 is thus disposed below the level of the water in the basin. Moreover, the
• IO first tank 3 may comprise an upper compartment 9, superimposed on the lower compartment 7, for housing a small pre-filter basket (not shown), useful for the retention of very large debris (leaves, needles, etc.). delaying the clogging of the filter element 8.
• the upper compartment 9 is connected to the frothing mouth 2 and has a
• the second tank 5 is closed in its upper part by a cover 11 extending above the level of the water in the basin, said second tank 5 being disposed downstream of the first tank 4 with respect to the direction of flow.
• the second tank 5 is intended to receive a filter element 12 having a fineness of retention greater than that of the filter element of the first tank 3.
• the fineness of retention of the filter element 12 is 15 microns. It is produced using a filter medium 13 disposed on the periphery of a rigid tube 14 serving to guide the water previously filtered in the media 13. Nevertheless, the filtering element 12 may be of any known type. of the skilled person.
• the filter element 8 may be of any known and appropriate type, for example made using a filter medium disposed on the periphery of a tube rigid.
• its retention fineness may for example be 50 microns, and it will often be used in combination with the pre-filter basket (not shown) intended to be placed in the upper compartment 9 of the first tank 3.
• the second tank 5 has a supply port 15, and an outlet port
• the lid 11 comprises automatic venting means, which comprise a deformable and resilient membrane 19, disposed in a housing 20 in which it is free to translate and deform.
• the bottom 21 of the housing 20 is provided with an orifice 22, and at least one stud 23 projecting from said bottom 21 and located at the periphery of said orifice 22.
• the housing 20 is delimited by a cap 24 whose base is in support by gravity on a seat 25 formed in the cover 11 of the second tank 5.
• the contour of the seat 25 is of complementary shape of the base of the cap 24.
• the cap 24 has the shape of a dome, and has holes 26 for the passage of the air. Pins 27 protrude from the bottom 21 of the housing 20 and provide lateral retention of the membrane 19 in said housing 20.
• the first tank 3 and the second tank 5 are arranged one beside the other, and interconnected by at least two connecting elements, one upper 28 and the other lower 29 so that said tanks 3 and 5 constitute a rigid and monobloc assembly.
• the lower connecting element 29 is hollowed out and connects the outlet port 4 of the first tank 3 and the supply port 15 of the second tank 5. It serves here to guide the water in the tank 3 to the tank 5.
• the two tanks 3 and 5 may be distant from each other without departing from the scope of the invention.
• the angular configuration of the second tank 5 around the first tank 3 can be arbitrary.
• the junction between the second tank 5 and its lid 11 is sealed, and removable to allow access to the filter element 12. For example the user will lift the lid 11 when the filter element 12 will need to be changed or cleaned .
• the seal of the junction may for example be obtained using an O-ring not shown.
• Figure 3 shows the venting means provided in the lid 11 when the pumping means are stopped.
• the level of the water in the second tank is then marked 30 and coincides with the level 17 ( Figure 4) of the basin.
• the pressure of the interior air which is present between the surface of the water in the second tank 5 and the lid 11, is equal to the atmospheric pressure outside the second tank 5.
• the membrane 19 is at rest, that is, in its natural form. It is supported simultaneously on the nipple 23 and on the bottom 21 so as to extend above the orifice 22. It is held laterally by the lugs 27. The air is free to pass from the outside to inside the second tank 5, and vice versa, in a passage having a small section determined by the space between the bottom 21 of the housing 20 and the membrane 19.
• a depression is created in the second tank 5.
• the membrane 19 is sucked by the interior air through the orifice 22.
• the membrane 19 is deformed gradually and when the pressure is sufficiently low, it closes the orifice 22 sealingly. In this configuration, it is said that the venting means are in the closed position.
• the level of the water in the tank 5 drops to the level referenced 31 (FIG. 6). This lowering is caused by the pressure drops experienced by the water in the filter element 8 of the first tank 3.
• the circulation of the water in the whole of the filtration device 1 is symbolized by the white arrows in the figure. 2.
• the arrows of Figure 6 symbolize the lowering of the water level in the second tank 5.
• the level 31 of water stabilizes. If the tightness of the cover 11 and venting means are not perfect, the level of the water in the second tank 5 continues to fall as long as the pumping means operate, until the level of the supply port 15 of the second tank 5.
• the stopping of the pumping means has two phases.
• the stopping of the pump causes suction of the water from the basin towards the tank 5 due to the depression generated during the operation of the pumping means.
• the pressure inside the tank 5 becomes significantly higher than the external pressure.
• the air inside the second tank 5, under pressure is expelled by the venting means.
• the membrane 19 lifts completely from the bottom 21 of the housing 20 and the stud 23, while the lugs 27 hold it laterally.
• the interior air is expelled between the bottom 21 and the membrane 19, then through the holes 26 of the cap 24.
• the exhaust is made in a passage having a section which is significantly greater than the section through which the interior air could passing from the outside to the inside of the second tank 5 (and vice versa) when the membrane 19 was at rest (pumping means at rest).
• said exhaust is possible regardless of the difference between the pressure of the air inside the tank 5 and the atmospheric pressure outside. Without exhaust, the rise of water in the second tank 5 would be impossible and the water level would remain at level 31. Thus, at each cycle of starting and then stopping the pumping means, the level would drop to reach the level of the supply port 15 of the second tank 5.
• the second phase of stopping the pumping means begins when the suction of the pond water ceases and the inner and outer pressures are balanced. At this time, the water level has reached the level referenced 32 in Figure 8 which is located above the water level in the basin. Then the previously sucked water is pumped back to the pond, causing the pressure of the indoor air to drop. To allow the level of the water in the second tank 5 to lower until it stabilizes at level 30, the venting means automatically come to occupy a position where the intake of outside air is possible . The outside air sucked follows the path indicated by the arrows in FIG. 9. In FIG. 10, the three upper arrows symbolize the air entering through venting means, and the three lower arrows symbolize the lowering of the water level. If admission was not possible, the level would remain at level 32. In this case, after a number of cycles of starting and stopping the pumping means, the water would escape through the means of venting. at each stop pumping means.
• the membrane 19 is therefore substantially at rest, close to its natural shape, positioned above the orifice 22 by simultaneously pressing on the nipple 23 and on the bottom 21. maintained laterally by the lugs 27.
• the admission of air is through a passage having a very small passage section, determined by the space separating the bottom 21 of the housing 20 and the membrane 19 slightly deformed.
• the membrane 19 is designed to achieve a level of deformation sufficient to seal the orifice 22 at the time when the difference between the external pressure and the pressure inside the tank 5 becomes greater than a predetermined value.
• the membrane 19 is deformed, as in the case of starting the pumping means and their stabilized regime during operation.
• This value can be determined experimentally or by calculation. In practice, it will depend on the volume of internal air, the volume of the second tank 5, the dimensions and the rigidity of the membrane 19, the diameter of the orifice 21.
• the automatic venting means can occupy:
• an exhaust position delimiting a passage having a first section, when said pressure is greater than atmospheric pressure, for the exhaust towards the outside of the air present between the surface of the water in the second tank 5 and said cover 11, - an intake position delimiting a passage having a second lower section to the first section, for the admission of air, when said pressure is greater than the predetermined value and less than or equal to the atmospheric pressure.
• This operation means venting is essential to ensure the level of water in the second tank 5 to be constant after each cycle of starting and stopping the pumping means.
• the filter element 12 placed in the second tank 5 is continuously immersed in its entirety so that filtration is effective.
• this stability of the water level is obtained although the supply orifice 15 of the second tank 5 is significantly below the water level 17 of the basin, which limits the energy losses.
• the lid 11 of the second tank 5 extends above the level 17 of the water in the basin.
• the distance vertically separating the lid 11 of the second tank 5 and the level 17 of the water in the basin is sufficient to prevent the backflow of water through the venting means when stopping the means of pumping.
• This arrangement also allows access to the lid 1 1 is very easy for the user, because the cover 11 may be provided as flush with the edges around the pool, and thus contributes to the maintenance of the filtration device 1 very easy.
• a filtration device comprising at least three tanks each containing a filtering element, the fineness of retention of the filtering elements increasing progressively during the passage of the water to be filtered through the filtration device.
• the second tank and the following will then be designed identically to the second tank 5 of the example described above.

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• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Water Supply & Treatment (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Farming Of Fish And Shellfish (AREA)
• Filtration Of Liquid (AREA)
• Water Treatment By Sorption (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

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Citations (8)

• 2005
  • 2005-08-03 FR FR0508275A patent/FR2889458B1/fr not_active Expired - Fee Related
• 2006
  • 2006-08-02 WO PCT/FR2006/001874 patent/WO2007015006A1/fr active Application Filing
  • 2006-08-02 EP EP06794266A patent/EP1909942B1/de active Active
  • 2006-08-02 ES ES06794266T patent/ES2323435T3/es active Active
  • 2006-08-02 DE DE602006005678T patent/DE602006005678D1/de not_active Expired - Fee Related
  • 2006-08-02 AT AT06794266T patent/ATE424912T1/de not_active IP Right Cessation

Patent Citations (8)

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