Installation for treating water for a swimming pool

Abstract

The present invention presents a system (1) and an adapted method for treating swimming pool water (4) of a swimming pool (2), which improves both the energy efficiency of the system (1) and the water quality of the swimming pool water (4). The system (1) consists of a conventional swimming pool (2) and a filter unit (3), which, together with pipes (6, 10), form a type of communicating vessels in a water circuit. The filtered water from the filter unit (3) is supplied to the swimming pool (2) via a plurality of pipes (6) and pumps (7), the pumps (7) being arranged near the bottom in the lower region of a swimming pool wall (8).

Description

[0001] The present invention relates to a water treatment system for a swimming pool in which the water volume must be circulated several times a day to meet the hygienic requirements of a swimming pool. In particular, several smaller circulation pumps are used, which are installed in the immediate vicinity of a swimming pool wall, thereby improving the energy efficiency.

[0002] Such water treatment systems for a swimming pool in a water circuit with a filter unit are known in the prior art from publication G 7001878. This publication discloses a plastic swimming pool that, in a compact design, incorporates various units for water treatment for the swimming pool. The pool water to be treated is supplied to and from the swimming pool by a central circulation pump, thus forming a water circuit in which the pool water is filtered.

[0003] Furthermore, a water treatment plant for swimming pools is disclosed in German patent application DE 20 2008 010 167 U1, in which the swimming pool water circulates through at least one swimming pool and is thereby cleaned by a filter. The filter consists of a filter tank in which a filter bed is arranged, which is cleaned of deposited dirt particles by backwashing.

[0004] Furthermore, a water container is known from the publication DE196 29 797 A1, into which the liquid is supplied via a line through a multitude of nozzles in order to achieve a uniform flow through the container.

[0005] Furthermore, publication EP 3 476 457 A1 discloses a filtration arrangement with a filter element made of a filter material for liquid media, in which the filter material is formed from a plurality of continuous fibers which, together with various other continuous fibers, form a nonwoven material. This nonwoven material is arranged in several layers, one above the other, in a cylindrical tube in an interchangeable manner.

[0006] A disadvantage of the systems known in the state of the art is generally perceived to be that the overall energy consumption of the system is relatively high given the prescribed hygiene requirements, because the entire quantity of water must be circulated and cleaned at least three times a day.

[0007] Another frequently cited disadvantage is that the noise level associated with the water circulation rates described above is perceived as unpleasant by bathers, because the circulation pump has to deliver a relatively high output, which is linked to increased noise. Furthermore, the technical complexity of a conventional swimming pool system is relatively high, partly due to the large pressure differences, which ultimately leads to increased energy consumption.

[0008] Based on the prior art described above, the present invention aims to overcome the disadvantages of the prior art, in particular to reduce the energy consumption required to produce high water quality.

[0009] This problem is solved by the characteristic features of the present invention.

[0010] The inventive water treatment system for a swimming pool in a water circulation system comprises a filter unit with which the swimming pool water is filtered and purified. The inventive system is characterized in that, when not in use, the swimming pool and the filter unit are physically arranged according to the concept of communicating vessels, wherein the swimming pool and the filter unit are connected to each other by means of a plurality of water pipes that serve both the inflow and outflow of the swimming pool water. It is particularly important that a circulation pump is arranged at the end of each supply pipe closest to the swimming pool, which is located in at least one wall of the swimming pool and returns the filtered water to the swimming pool, thus completing the water circulation system.

[0011] It is advantageous that the outlets of the respective pump housings are located in the lower area of ​​the swimming pool wall, which facilitates the circulation of the swimming pool water, as this already gives the swimming pool water a flow direction.

[0012] It is also advantageous that the cross-sectional areas of the pump housing outlets are approximately flush with the surface of the swimming pool wall in which the housing is installed.

[0013] Furthermore, it is advantageous for this system that the cross-sectional area of ​​the opening for the water return from the swimming pool to the filter unit is arranged in the upper area of ​​the swimming pool in at least one swimming pool wall such that, when the system is at rest, the surface of the swimming pool water coincides with the lower edge of the water return opening. This means that as the water surface rises, the water overflows the lower edge of the water return opening and flows out.

[0014] Another advantage is that the system includes at least one special filter unit which is connected to the swimming pool via inlet and return lines in order to maintain the physical principle of communicating vessels.

[0015] Another advantage is that at least one replaceable filter element made of a suitable filter material is arranged within the filter device, which can be easily and effortlessly replaced in the filter device after reaching a predetermined level of contamination, whereby the suitable filter material can be a nonwoven fabric woven with various different thread-like materials.

[0016] It is also advantageous that each individual circulation pump is arranged in a prefabricated housing with an outlet opening whose cross-sectional area is approximately flush with the swimming pool wall.

[0017] In one embodiment, it may be advantageous for the filter system to be integrally connected to the swimming pool and to be connected to a pool wall only by a watertight partition. This embodiment is particularly applicable to prefabricated swimming pool systems.

[0018] A further advantage is that at least the pump control system is electronic, comprising a transmitter and a receiver. The control signals can be transmitted wirelessly or via a wired connection, and at least the receiver of the control signals is waterproof. The receiver can be located inside the pump housing.

[0019] The inventive method for water treatment for a swimming pool in a water circuit, in which the swimming pool water is fed to a filter device and subsequently, as a result of the filtering action of the filter device, impurities in the swimming pool water are separated, wherein the cleaned water is fed back to the swimming pool via pipes and the flow rate of the swimming pool water to be filtered within the filter device is adjusted by means of a plurality of circulation pumps such that the water flow rate corresponds to a setpoint value to be determined, corresponding to the total resistance of the system, which results from the resistance of the pipes and the filter device.This method is characterized, firstly, by the fact that the flow rate of the swimming pool water to be filtered within the filter system is adjusted by means of multiple circulation pumps so that the water flow rate in the pipes does not exceed a predetermined setpoint. Secondly, another characteristic feature is that at the end of multiple inlet pipes that supply the water to the swimming pool, a relatively small circulation pump is installed, the outlet of which is approximately flush with the surface of the swimming pool wall in which the circulation pump is mounted.

[0020] In this method, it is advantageous that the at least one filter inlet opening, which supplies the unfiltered water to the filter unit, is located above the filter elements, and the multiple pool inlet pipes, which supply the filtered pool water to the pool, are located below the filter material. This at least assists the flow of the pool water through the filter material due to gravity, thus reducing the required pump performance.

[0021] When selecting the appropriate filter material, it is advantageous to use a filter fleece that is able to separate harmful germs and bacteria, as well as solids, from the swimming pool water.

[0022] Furthermore, it is advantageous to use speed- and power-controlled pumps for the large number of circulation pumps, such as radial pumps or axial pumps, which also have a controllable synchronous motor as a drive.

[0023] Furthermore, it can be advantageous to install heating elements in or on the supply lines to the swimming pool in order to keep the swimming pool water at a predetermined temperature.

[0024] Further advantageous properties and essential features of the present invention can be found in both the dependent claims and the description.

[0025] The invention will now be described in detail with reference to the drawings. These show: Fig. 1 a block diagram of the system (1) with its essential technical components and their connections; Fig. 2 a schematic representation of the system (1) in which the swimming pool (2) is connected to a filter unit (3) by pipes (6, 10); Fig. 3 a schematic side view of a section of a swimming pool wall (8) in which a circulation pump (7) is arranged in a housing (7') at the end of a supply line (6), the opening (20) of the housing (7') being approximately flush with the surface of the swimming pool wall (8); Fig. 4 a schematic perspective view of an embodiment of a prefabricated swimming pool (2) with a filter unit (3) arranged thereon.

[0026] The Figure 1Figure 1 shows a block diagram of the principle of system 1 for the treatment of water in a swimming pool 2. System 1 essentially consists of a filter unit 3 and a swimming pool 2, in which a plurality of smaller pumps 7 are arranged in the lower area of ​​a swimming pool wall, the outlet opening of which is flush with the surface of the swimming pool wall.

[0027] Swimming pool 2, together with pumps 7 and filter unit 3, are connected by pipes 6 and 10, so that the filtered water from filter unit 3 is pumped into swimming pool 2 by means of several pumps 7. The pumped water flows back through pipe 10 into filter unit 3 via an overflow at the top edge of swimming pool 2, thus completing the water cycle.

[0028] The Fig. 2Figure 1 shows a schematic representation of system 1, in which the swimming pool 2 is connected to a filter unit 3 by pipes 6 and 10. The swimming pool 2 and the filter unit 3 are arranged according to the principle of communicating vessels such that the surface level 11 of the swimming pool water and the surface level 12 of the filter unit 3 are approximately at the same height. The two units communicate, i.e., the swimming pool 2 and the filter unit 3 are connected via two separate pipe groups 6 and 10. One pipe group 6 connects the filter unit 3 to the swimming pool in the lower part of the units, and the other pipe group 10 connects the two units 2 and 3 in the upper part of the units 2 and 3.In this diagram, the lower pipe group 6 represents the supply lines to the swimming pool 2, and the upper pipe group 10 represents the inflow lines to the filter unit 3. The swimming pool 2 is filled with ready-to-use pool water 4, the volume of which must be circulated and filtered approximately three times a day to meet the hygienic requirements of a private swimming pool. This is accomplished by a number of circulation pumps 7, which are located near the bottom of at least one pool wall 8 in the lower section of the pool. "Ready-to-use" means that the surface of the pool water is at the lower edge of the opening 19 of the pool's overflow, so that when water flows in through the pipes 6, the inflow is fed to the filter unit 3 via the return lines 10.

[0029] The filter unit 3 is positioned next to the swimming pool 2 such that the pool water flowing into the filter unit 3 via the pipe group 10 flows onto the surface of the filter material 9 of the filter elements 14. The incoming water volume corresponds approximately to the volume of water pumped into the swimming pool 2 by the majority of the pumps 7. The total output of the pumps 7 is adjusted according to the overall mechanical resistance of the system, which consists, among other things, of the resistance of the pipes and the resistance of the filter unit 3, such that the flow rate of the water through the filter material 9 corresponds approximately to the inflow volume into the filter unit 3, ensuring that the filter material 9 is just completely covered with water. The opening 18 of the inlet pipe should only be partially covered by the water surface 12 in the filter unit 3.

[0030] The entire filter material 9 consists of a plurality of different filter elements 14, which ensure that both harmful germs and bacteria as well as solids are separated and removed from the swimming pool water. The filtered water then enters the lower part of the filter unit, from where the swimming pool water is drawn back into the swimming pool 2 through the pipes 6 by the suction of the pumps 7. This completes the water cycle, and the water circulation process can begin anew. The swimming pool water 4 is drawn into the overflow 19 at the surface 11 and fed back into the filter unit 3 through the pipes 10 or pipe group. A multitude of overflows 19 are arranged at appropriate intervals at the level of the water surface 11 of the swimming pool water in the swimming pool 2, and these are connected to the pipes 10 leading to the filter unit 3.

[0031] For water disinfection purposes, the water is irradiated with UV light at a suitable point, for example at the inlet to filter unit 3. The addition of predetermined, metered amounts of chlorine and pH reducers serves the same purpose, thus meeting the hygienic and health requirements of the user.

[0032] The Figure 3 Figure 1 shows a schematic side view of a section of the swimming pool wall 8 near the bottom, in which the majority of pumps 7 are installed. Each pump 7 is arranged in a prefabricated housing 7', with the end of the inlet lines 6 connected to the housing 7' of the pump 7. The housing 7' has an outlet opening 20 on the side opposite the inlet line 6, the surface of which is approximately flush with the surface of the swimming pool wall 8. Technical details of the outlet are, of course, not shown here.

[0033] The outlet opening 20 of the pump housing 7' is installed near the bottom of the swimming pool 2 in a pool wall 8, which is preferably one of the longitudinal walls 8 of the swimming pool 2. The distance from the bottom 21 of the swimming pool 2 depends on the flow conditions within the swimming pool, which can vary depending on the pool size.

[0034] The Figure 4Figure 1 shows a perspective view of an embodiment of a prefabricated swimming pool 2 made of UV-resistant PVC. The swimming pool 2 is cuboid in shape and features steel reinforcement for stabilizing the pool walls, extending over all pool walls 8 and the pool floor 21. A filter unit 3 is arranged at one end of the swimming pool 2, with which the pool water is filtered and cleaned. The details of this filter unit 3 have already been described above. In the present embodiment, the locations where the pumps 7 are installed in the walls 8 of the swimming pool 2 are marked with a circle. This shows that the majority of the pumps 7 are arranged near the bottom in the lower region of the longitudinal walls 8, which facilitates the circulation of the entire volume of water in the swimming pool and thus reduces the requirements for pump performance.In this embodiment, each individual pump 7 is designed to be individually controllable and adjustable, so that the total pump output can be individually adjusted, which is done with the help of external control devices with corresponding programs, which are not shown here.

[0035] In summary, it can be stated that the present system 1 according to the invention and the adapted method for treating swimming pool water 4 of a swimming pool 2 are presented, with which both the energy balance of the system 1 and the water quality of the swimming pool water 4 are improved. The system 1 consists of a conventional swimming pool 2 and a filter unit 3 which, with pipes 6, 10, form a kind of communicating vessels in a water circuit. The filtered water from the filter unit 3 is supplied to the swimming pool 2 via a plurality of pipes 6 and pumps 7, the pumps 7 being arranged near the bottom in the lower region of a swimming pool wall 8.

Claims

1. System (1) for water treatment for a swimming pool (2) in a water circuit with a filter device (3) with which the swimming pool water (4) is filtered and cleaned, characterized by the fact that the swimming pool (2) and the filter device (3) are physically arranged in the standby position according to a communicating vessel, wherein the swimming pool (2) and the filter device (3) are connected to each other by means of a plurality of water lines (6,10), wherein a circulation pump (7) is arranged at the end of each of the inlet lines (6) into the swimming pool (2), which is arranged in at least one wall (8) of the swimming pool (2) and pumps the filtered water into the swimming pool.

2. System according to claim 1, characterized by the fact that the outlets (20) of the pump housings (7') are located in the lower part of the swimming pool wall (8).

3. Device according to one of the preceding claims, characterized by the fact thatthe cross-sectional areas of the outlets (20) of the pump housings (7') are approximately aligned with the surface of the swimming pool wall (8).

4. Plant according to one of the preceding claims, characterized by the fact that When the system is at rest (1), the cross-sectional area of ​​the water return opening in the upper area of ​​at least one swimming pool wall (8) is arranged such that the water surface (11) of the swimming pool water (4) at rest coincides with the lower edge of the water return opening.

5. Plant according to one of the preceding claims, characterized by at least one special filter device (3) which is connected to the swimming pool via inlet and return lines (6,10), wherein a pump (7) is arranged at the end of each of the inlet lines (6) into the swimming pool (2).

6. Plant according to one of the preceding claims, characterized by the fact thatwithin the filter device (3) at least one replaceable filter element (14) of a suitable filter material is arranged.

7. Plant according to one of the preceding claims, characterized by the fact that The suitable filter material is a non-woven fabric.

8. Plant according to one of the preceding claims, characterized by the fact that Each individual pump (7) is arranged in a prefabricated housing (7') with an outlet opening (20) that is approximately aligned with the swimming pool wall (8) of the swimming pool (2).

9. Plant according to one of the preceding claims, characterized by the fact that the filter device (3) is arranged in the immediate vicinity of the swimming pool (2), wherein the filter device (3) is arranged by at least one water-impermeable partition in the upper area of ​​at least one wall (8) of the swimming pool (2).

10. Plant according to one of the preceding claims, characterized by this,that at least the pump control / regulation is designed electronically, wirelessly or wired, and at least the receiver of the control / regulation signals is designed to be waterproof.

11. Method for water treatment for a swimming pool (2) in a water circuit in which the swimming pool water (4) is fed to a filter device (3), whereby, as a result of the filtering action of the filter device, impurities in the swimming pool water (4) are separated and the cleaned water is fed back to the swimming pool (2) via pipes (6), characterized byThe following process steps are involved: - Adjusting the flow rate of the swimming pool water (4) to be filtered within the filter device (3) by means of a plurality of circulation pumps (7) such that the flow velocity of the flow rate in the pipes (6) does not exceed a predetermined setpoint, wherein - at the end of a plurality of inlet pipes (6) into the swimming pool (2) a circulation pump (7) is arranged, the outlet opening of which is approximately flush with the surface of the swimming pool wall (8) in which the circulation pump (7) is installed.

12. Method according to claim 11, characterized by the fact that the multitude of filter inlet openings (18), which supply the unfiltered water to the filter device (3), is arranged above the filter elements (14) and the multitude of swimming pool inlet lines (6), which supply the filtered swimming pool water (4) to the swimming pool (2), is arranged below the filter elements (14).

13. Procedure according to any of the preceding claims, characterized by the fact that a filter fleece is used as filter material which is able to separate both harmful germs and bacteria as well as solids from the swimming pool water (4).

14. Method according to any of the preceding claims, characterized by the fact that The large number of circulating pumps (7) can be speed- and power-controlled, for example by means of a radial pump or an axial pump with a controllable synchronous motor as a drive.

15. Procedure according to any of the preceding claims, characterized by the fact that At a predetermined point, the swimming pool water is irradiated with UV light, and disinfectants such as chlorine or pH reducers are added to the swimming pool water as needed.

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