FR2609904A1 - Complementary filtering device suitable for swimming pools with a spout - Google Patents

Abstract

Complementary filtering device suitable for swimming pools with a spout, consisting essentially of the pool 1 and its spout 2, a conduit 3 feeding a prefilter 5 followed by a conduit 6 provided with an electrical valve 7 controlled by a control module 16, itself driven by a level sensor 17 placed in the buffer tank 8. This unit forming the means for retaining water in the spout 2. The buffer tank 8 provided with an overflow 9 is followed by a conduit 10 in which an electrical valve 11 is placed, followed by a nonreturn valve 12 forming a safety circuit before the T connecting 13 the water circuit to the bottom outlet, then the prefilter 14 preceding the pump 15 which directs the water towards the main filter of the filtration plant for a pool of this type.

Description

ADDITIONAL FILTRATION DEVICE SUITABLE FOR POOLS A
CHUTE.

The present invention applies in the field
treatment of water in trough pools, including particulari
apart from their superb aesthetics, is that the water flowing in
the chute located below the pool water level, serves
cleaning the surface thereof of undesirable floating elements.

In more traditional pools, we aspire
re the water above by means of "skimmers1 'which are used to
skim the surface of the water, retaining with more or less efficiency
tee leaves floating on it.

Currently, trough pools have a cir
filtration water surface water which simply flows into
an upholstered tank, with a volume always greater than that of the chute
then, this water passes, via a non-return valve in a prefilter,
before being sucked up by the pump and directed again into the udder
cine, via the main filter.

However, this provision has several disadvantages
came to be found in use, and which many used
ters or professionals have observed this frequently.

When the swimming pool is located in a
region where there are pines, we find in the waters of this one
pine needles floating on the surface, crossing without too much dif
fix the buffer tank, the non-return valve but which can remain there,
the prefilter, then going to deteriorate the pump, and therefore, possible
the motor of the filtration unit.

In addition to the damage, sometimes expensive, caused by
these needles it has been observed that when these were blo
that in the check valve of a pool with a chute, and that
the filtration pump was stopped, the water level in the udder
cine, by the principle of communicating vessels, was lowered until
level of the buffer tank overflow, that is to say that the pool could empty one third of the volume of its water.

In addition, the construction of a buffer tank of approximately two cubic meters for a basin of one hundred and thirty cubic meters increases significantly the cost price of the whole,
In order to remedy these drawbacks, the present invention relates to the entire surface water filtration circuit, with, at the start of this circuit, a prefilter of rational design, the role of which will be to stop the maximum amount of suspended matter. , then behind this prefilter an electric valve whose role is to maintain a sufficient water level in the chute, to avoid any risk of defusing the pump, when it is restarted.

 This first electric valve controlled by a sensor will open, in the general case, from the operation of the pump, but also, in the case where the water level in the chute has exceeded a certain maximum point beyond which there would be risk of overflow. This risk can occur when the pool is used without operating the filtration and / or in the event of rain. In this case, the opening of this electric valve is controlled by a means for detecting the maximum level in the chute. The water will flow by gravity through the filter, then fall into the buffer tank, and when it is full, will be evacuated by the overflow, provided for this purpose.

 After the buffer tank, a second electric valve was placed followed by a non-return valve constituting a safety assembly so that when filtration stops, this second electric valve closes, despite the possible presence of a few pine needles or any other long, floating body while the non-return valve will eventually act in the event of a power failure.

 In the buffer tank, a means for detecting the upper level of the pressure switch or float type is mounted, which controls the closing of the first electric valve which will therefore occur with a certain delay in relation to the stopping of filtration.

Instead of the level detection means, provision may be made for time delay for closing the first electric valve with respect to stopping the filtration.

 The essential characteristics of the present invention are therefore constituted by the prefilter, by a means for retaining water from the chute and by a means of controlling the risk of overflow, which is ensured by an electric valve actuated by a module of ordered; A non-return water blocking means being provided by a safety circuit comprising a second electric valve.

Other advantages of the invention will appear in the detailed description of an embodiment given by way of nonlimiting example represented by the attached drawing.
FIGURE 1: schematic diagram of the specific complementary device
fique at the gully pools.

 Figure l gives a schematic representation of the principle of the invention, in which is shown the swimming pool (1) extended by its chute (2).

 At one end of the chute (2) and at the lowest point, there is the conduit (3) which directs the water to the technical room (4), simply by gravity to the pre-filter (5) duqel will release the water cleared of floating debris through a conduit (6), via the first electric valve (7) to the buffer tank (8) located below.

 This buffer tank (8) is provided with an overflow (9) by which the excess water can be evacuated to the sewer at the evacuation point (A).

 At the base of this buffer tank (8) is the conduit (10) through which the water is drawn in, during the operation of the filtration.

 On this conduit (10) is placed a second electric valve (11) followed by a non-return valve (12) then by a "T" (13) connecting the circuit of the bottom drain, the water being have been pumped in (B), passing through the prefilter (14) then in the pump (15) to be discharged in (C) to the main filter.

 When the filtration works, the water level in the chute (2) is positioned at (D) because the first electric valve (7) lets the water flow to the buffer tank (8), because there has no control signal on the inputs of the control module (16) at points (E) and (F), on the other hand the presence of a signal on the input of this module (16) at point (G) puts in the open position the electric valve (11), the water level in the buffer tank (8) is substantially positioned at (H).

 When filtration is stopped, the signal at point (G) of the control module (16) disappears, causing the electric valve (11) to close immediately with an output signal at point (I). Water will continue to flow from the chute (2) in which the level will drop causing an increase in the water level in the buffer tank (8) to the point (J) where it will act on the sensor (17) sending a signal to point (F) which will produce a signal at point (K) controlling the closing of the electric valve (7).

 In the case of an increase in the level of water in the chute (2) caused by bathers when filtration is stopped or when it rains, as soon as the level reaches point (L), the sensor (18) will send a control signal to 1 input (E) of the module (16) causing a change of state of the electric valve (7), causing it to open, the excess water in the circuit going, then, to flow by the overflow (9) of the buffer tank (8) towards the bridge (A).

Claims (7)

 1.- Surface water filtration device suitable for pools with a trough of the type consisting of buffer tank and filter, characterized in that it comprises an additional filtration means constituted by a prefilter (5), a means for retaining the water from the chute (2), and that the overflow risk control means is ensured by an electric valve (7) actuated by a control module (16); A non-return water blocking means being provided by a safety circuit comprising a second electric valve (111. 2.- A surface water filtration device suitable for pools with a trough, according to claim 1, characterized in that the first electric valve (7) is located after the prefilter (5), the second electric valve (11) being for its part, placed after the buffer tank (8). 3.- A device for filtering surface water, suitable for pools with a trough, according to any one of claims 1 or 2, characterized in that the control module (16) is controlled by a level sensor (17) for retain the water from the chute (2). 4.- Surface water filtration device suitable for pools with a trough, according to any one of claims 1 or 2, characterized in that the control module (16) is controlled by the level sensor (18) to ensure the overflow control of the chute (2), via the buffer tank (8) 5. A device for filtering surface water suitable for swimming pools with a trough according to any one of claims 1 or 3 or 4, characterized in that the level sensors (17) (18) used are pressure switches.  6.- Surface water filtration device suitable for pools with a trough, according to any one of claims 1 or 3 or 4, characterized in that in a variant, the level sensors (17) (18) are switches with floats. 7.- Surface water filtration device suitable for pools with a trough, according to claim 1, characterized in that an active element of the control module (l6eAsL constituted by a timed relay, which simplifies the assembly by removing the sensor (17).  ô.- Surface water filtration device suitable for swimming pools with a trough, according to claim 1, characterized in that the electric valve (11) precedes a non-return valve (12) which acts in the event of a power failure.