WO2004015225A1 - Filtre par gravite destine a des piscines a debordement - Google Patents

Filtre par gravite destine a des piscines a debordement Download PDF

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Publication number
WO2004015225A1
WO2004015225A1 PCT/IT2003/000481 IT0300481W WO2004015225A1 WO 2004015225 A1 WO2004015225 A1 WO 2004015225A1 IT 0300481 W IT0300481 W IT 0300481W WO 2004015225 A1 WO2004015225 A1 WO 2004015225A1
Authority
WO
WIPO (PCT)
Prior art keywords
overflowing
channel
tlie
mat
tiie
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IT2003/000481
Other languages
English (en)
Inventor
Luigi Spedini
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Agrisilos SRL
Original Assignee
Agrisilos SRL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Agrisilos SRL filed Critical Agrisilos SRL
Priority to AU2003253293A priority Critical patent/AU2003253293A1/en
Publication of WO2004015225A1 publication Critical patent/WO2004015225A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • E04H4/1218—Devices for removal of polluted water; Circumferential gutters
    • E04H4/1227—Circumferential gutters

Definitions

  • Overflowing swimming pools, or spillway swimming pools comprise an overflowing channel, positioned along at least one side of the perimetric edge of tlie basin of the swimming pool, that enables to keep the water level at the same height as the edge, as water is continuously overflowing from the basin into the channel itself.
  • Said overflowing channel is connected by means of a discharge pipe to a water purification and re-circulation circuit, generally cornprising a pump, a physical-mechanical type filter, for example a sand filter or a cartridge filter, and nozzles for rechannelling the water into tlie basin.
  • Said circuit normally also comprises a compensation tank, underlying the overflowing channel.
  • the physical-mechanical type filter in fact, causes a considerable head loss in tlie water circuit and forces the need for a pump with a rather high discharge head.
  • head loss of tlie filter is considerably increased by its progressive clogging, and this forces to frequent cleaning or replacement, as well as tlie use of a pump capable of guaranteeing re-circulation even in conditions of dirty filter, with higher installation, handling and maintenance costs.
  • Another disadvantage is that this type of filter is not very effective, as experience shows that water tends to flow through preferential courses, without going over the entire filtering surface, which therefore is only partially used.
  • the object of the present invention is to eliminate these inconveniences.
  • the main object of tlie invention is to produce a low speed gravity filter for overflowing swiimning pools, for acliieving high filtering efficiency, but having low head losses of the water purification and re-circulation circuit.
  • a further object of tlie invention is that said losses are constant during operation of the sw ⁇ nming pool, and in particular that they are not influenced by tlie progressive clogging of the filter.
  • said filter is low-cost, simple to clean or replace, and also enables the development of biomass acting as a biological purifier.
  • a gravity filter for overflowing sw ⁇ mning pools comprising a basin and an overflowing channel closed on the upper side by a pedestrian covering, characterised in that it is made by means of a filtering mat, positioned in the overflowing channel above the water level of said channel and below tlie water level of said basin, so that water overflowing from said basin to said channel passes through said filtering mat.
  • the filtering mat is anchored to tlie sides of the overflowing channel, so that it can be easily removed.
  • the main advantage of the invention consists in that tlie filter, realized by means of said filtering mat, is separated from tlie water re-circulation circuit, and therefore does not introduce any head loss in the circuit itself.
  • tlie water passes through tlie filtering mat at a very low speed, determined only by the fall by gravity, and high filtering efficiency is therefore achieved without using expensive materials with very fine porosity.
  • tl e aerobic working conditions of tlie filter permit tlie development of bacterial flora, which can act as a biological purifier in those private swiinming pools that are not obliged by the law to disinfect tlie water.
  • Figure 1 is a schematic cross-sectional view of the edge of an overflowing swhnming pool, provided with a filter according to tiie invention.
  • Figures 2 and 3 show schematically tiie invention applied to tlie walls of tiie overflowing channel of two known types of swimming pools.
  • Figures 4 and 5 are sketches showing two operating conditions of tiie filter that is the object of the present invention.
  • Figure 6 shows some details of a preferred embodiment of tiie invention.
  • the invention relates to a gravity filter for overflowing swimming pools or spillway pools, essentially comprising a basin 1 and an overflowing channel 2, closed on tiie upper part by a pedestrian covering.
  • Said covering is made according to known techniques for overflowing swimming pools, for example by means of a removable footway grating 3, or by means of a slab 6 supported by pillars 11.
  • the gravity filter is made by means of a filtering mat 4, positioned in tiie overflowing channel 2 above ti e water level of tiie channel 2 and below the water level of tiie basin 1, so that water overflowing from the basm 1, and falling by gravity into tiie channel 2, passes through said filtering mat 4.
  • the filtering mat 4 is advantageously made of a needle- loomed non-woven fabric, or a synthetic material of the kind used for filtering surfaces of known cartridge filters.
  • Reversible hooking means for tiie filtering mat 4 are provided along the perimeter of tlie overflowing channel 2, allowing to separate tiie mat 4 from tiie overflowing channel 2, for cleaning or replacement.
  • said hooking means are made by means of a beam 8, with rotating hooks 9 suitably spaced, and the filtering mat 4 comprises retaining edge ropes 7, fit for making tl e edges of the mat rigid and hang it onto said hooks 9.
  • the rotating hooks 9 can be positioned transversally with respect to tiie overflowing channel 2, to keep ti e edges of tl e filtering mat 4 hooked up, or rotated and positioned longitudinally with respect to tlie channel, leaving the edges of the mat free during assembly.
  • the beam 8 can act as a baffle to convey the water towards the central part of the filtering mat 4, preventing water from falling directly into tiie overflowing channel 2 without passing through ti e mat.
  • baffles 10 can be made by means of wate ⁇ roof fabric strips, positioned to cover the edges of the filtering mat 4.
  • the overflowing channel 2 is connected, by means of at least one discharge pipe 5, to a re-circulation circuit, not shown, for rechannelling filtered water to tiie basin 1.
  • tiie water that overflows from the basin 1 passes through tlie filtering mat 4, then falls into tiie overflowing channel 2, from which it flows out into tiie re-circulation circuit through the discharge pipe 5.
  • ti e filtering mat 4 is clean, water flows mainly through its central zone, as shown in fig. 4.
  • tiie central zone of tiie filtering mat 4 is partially or totally clogged by dirt or bacterial flora (in tiie case of water that is not disinfected), the water accumulates on the mat and starts to flow from its sides, through zones of tlie mat that are still clean, as is schematised in fig. 5.
  • the filtering mat 4 guarantees high filtering efficiency as tiie water always passes through at a very low speed; in addition it can be made with economical materials and can be easily removed for cleaning or replacement.
  • no filter is provided on the re-circulation circuit, the only head losses are those caused by elevation, flow resistance of piping and inlet / outlet losses, and in particular they are constant and not influenced by the progressive clogging of tiie filtering mat 4.
  • Low pumping power is then required by the recirculation circuit, an economical type of pump can be used and energy consumption is reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Water Supply & Treatment (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Filtration Of Liquid (AREA)

Abstract

La présente invention concerne un filtre par gravité destiné à des piscines à débordement comprenant un bassin et un canal de débordement (2) fermé dans la partie supérieure par un recouvrement piétonnier. Ce filtre est fabriqué au moyen d'un matte de filtrage (4), placé dans ce canal de débordement (2), au dessus du niveau de l'eau de ce canal (2) et en dessous du niveau de l'eau du bassin (1), de sorte que l'eau débordant du bassin (1) dans ce canal d'écoulement (2) passe à travers ce matte de filtrage (4).
PCT/IT2003/000481 2002-08-08 2003-07-31 Filtre par gravite destine a des piscines a debordement Ceased WO2004015225A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003253293A AU2003253293A1 (en) 2002-08-08 2003-07-31 Gravity filter for overflowing swimming pools

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000013A ITCR20020013A1 (it) 2002-08-08 2002-08-08 Filtro a gravita' per piscine tracimanti
ITCR2002A000013 2002-08-08

Publications (1)

Publication Number Publication Date
WO2004015225A1 true WO2004015225A1 (fr) 2004-02-19

Family

ID=11441337

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2003/000481 Ceased WO2004015225A1 (fr) 2002-08-08 2003-07-31 Filtre par gravite destine a des piscines a debordement

Country Status (3)

Country Link
AU (1) AU2003253293A1 (fr)
IT (1) ITCR20020013A1 (fr)
WO (1) WO2004015225A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202000004108A1 (it) * 2020-02-27 2021-08-27 Ma Mi Italia S R L Struttura di piscina con nuovo sistema di fuoriuscita di acqua
IT202000004114A1 (it) * 2020-02-27 2021-08-27 Ma Mi Italia S R L Struttura di piscina con nuovo circuito di prelievo, filtraggio e ricircolo dell'acqua

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5725761A (en) * 1997-02-24 1998-03-10 Phillips; Harold L. Modular filter / circulation system and traveling main drain for in-ground swimming pools
US5787519A (en) * 1994-05-31 1998-08-04 Smith; Robert Leslie Compact swimming pool for restrained swimming
FR2768065A1 (fr) * 1997-09-10 1999-03-12 Dominique Martin Dispositif de prefiltration pour ecumeur de surface de l'eau d'une piscine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5787519A (en) * 1994-05-31 1998-08-04 Smith; Robert Leslie Compact swimming pool for restrained swimming
US5725761A (en) * 1997-02-24 1998-03-10 Phillips; Harold L. Modular filter / circulation system and traveling main drain for in-ground swimming pools
FR2768065A1 (fr) * 1997-09-10 1999-03-12 Dominique Martin Dispositif de prefiltration pour ecumeur de surface de l'eau d'une piscine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202000004108A1 (it) * 2020-02-27 2021-08-27 Ma Mi Italia S R L Struttura di piscina con nuovo sistema di fuoriuscita di acqua
IT202000004114A1 (it) * 2020-02-27 2021-08-27 Ma Mi Italia S R L Struttura di piscina con nuovo circuito di prelievo, filtraggio e ricircolo dell'acqua
WO2021171242A1 (fr) * 2020-02-27 2021-09-02 Ma.Mi. Italia S.R.L. Structure de piscine dotée d'une gouttière de bord
WO2021171247A1 (fr) * 2020-02-27 2021-09-02 Ma.Mi. Italia S.R.L. Structure de piscine avec circuit d'aspiration, de filtration et de recirculation d'eau
US12195995B2 (en) 2020-02-27 2025-01-14 Ma. Mi. International S.R.L. Swimming pool structure with water drawing, filtering and recirculating circuit
US12392153B2 (en) 2020-02-27 2025-08-19 MA.MI. International S.R.L. Swimming pool structure with an edge gutter
AU2021225485B2 (en) * 2020-02-27 2026-04-09 MA.MI. International S.R.L. Swimming pool structure with an edge gutter

Also Published As

Publication number Publication date
ITCR20020013A1 (it) 2004-02-09
AU2003253293A1 (en) 2004-02-25
ITCR20020013A0 (it) 2002-08-08

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