EP0657602A1 - Centrifugal pump for water recirculation - Google Patents

Centrifugal pump for water recirculation Download PDF

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Publication number
EP0657602A1
EP0657602A1 EP94500199A EP94500199A EP0657602A1 EP 0657602 A1 EP0657602 A1 EP 0657602A1 EP 94500199 A EP94500199 A EP 94500199A EP 94500199 A EP94500199 A EP 94500199A EP 0657602 A1 EP0657602 A1 EP 0657602A1
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Prior art keywords
external container
external
prefilter
pump
opening
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EP94500199A
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German (de)
French (fr)
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EP0657602B1 (en
Inventor
José c/o Bombas Eléctricas S.A. Pages Pages
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Bombas Electricas SA BOELSA
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Bombas Electricas SA BOELSA
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps
    • 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
    • E04H4/1245—Recirculating pumps for swimming pool water

Definitions

  • the present invention relates to a centrifugal pump for the recirculation of water, applicable in particular to swimming pools, of the type which includes a prefilter and a discharge chamber between the pump and the prefilter, the pump being provided with an electric motor, the axis sets in motion an impeller of several blades which rotates inside a diffusion chamber, closed in particular by a diffuser, the liquid entering coaxially with the impeller and exiting expelled by force centrifugal to a discharge chamber arranged between the electric motor and the prefilter, the prefilter being designed so that it comprises a vertical filter cup placed inside an external container fitted with a suction mouth external, of a horizontal circular mouth closed in a sealed manner, allowing the introduction and the extraction of the filter cup, and of an outlet conduit connected to the axial entry of the impeller (7), d e so that the sucked liquid enters the external container (16) through the external suction mouth and must pass through the walls of said filter cup (20) before arriving at the pump.
  • centrifugal pumps for recirculating swimming pool water essentially comprise a centrifugal electric pump and a prefilter which are connected and aligned longitudinally.
  • the centrifugal electric pump comprises an electric motor, the output axis of which is coupled to an impeller housed in a diffusion chamber and which is provided with a plurality of blades, which, prompted by the electric motor, draw the liquid to through the prefilter and expel it by centrifugal force to the outlet duct, which, in general, is placed orthogonal to the longitudinal axis defined by the assembly of the electric pump and the prefilter.
  • the prefilter which has an overall cylindrical or frustoconical shape, comprises a filter cup arranged so that all of the liquid discharged by the centrifugal pump must first pass through the walls of the filter cup before reaching the diffusion chamber, a plurality of screen-like orifices being provided in the side walls of the filter cup, which retains, from a certain size, the suspended solids transported by water.
  • the prefilter further includes a cover which allows the extraction, cleaning and replacement of the filter cup, and an external suction inlet where the liquid inlet duct to the pump is connected.
  • the arrangement of the external suction inlet described in the known embodiments of centrifugal pumps has, among other important drawbacks, first of all the fact that the external suction inlet occupies a fixed position relative to the axis given by the coupling of the electric pump and the prefilter, which largely limits the positioning of the centrifugal pump relative to the liquid inlet duct, and consequently, in most cases, the coupling of said inlet duct to the external suction inlet requires the use of several accessories and / or that said duct is curved, and, secondly, that there must be a large space between the lid of the outer container and the entry of the filter cup, which considerably reduces the dimensions of the latter.
  • the centrifugal pump which is the subject of the present invention eliminates all the drawbacks mentioned previously, and it is essentially characterized by the fact that said suction inlet and said horizontal circular mouth of the external container are unified into a single horizontal circular opening made at the end upper open of a cylindrical upper portion of said outer container, externally threaded, said vertical filter cup being provided at its mouth with a peripheral rim projecting outwards, designed to rest on the edge of said horizontal circular opening of the outer container, said edge being provided with a groove into which a tight seal is introduced, and a bent tubular piece being provided at one end of a flange, having substantially the same diameter as that of the mouth of the outer container and adapted to be able to rest on the latter, a nut drilled in the center of said mouth being provided, through the orifice through which passes said bent tubular piece, which is adapted to be screwed around the external thread of said cylindrical upper portion of the external container, so that when it is tightened during screwing, it compresses the flange of
  • the single figure of the drawings illustrates a view in upper lateral section of the centrifugal pump which is the subject of the invention.
  • the pump 1 comprises a pump body 2 coupled by means of an intermediate flange 3, and an electric motor 4, mounted on a support 5.
  • the end of the output axis 6 of the electric motor 4 passes through the flange 3 and it is coupled to the impeller 7 provided with a plurality of blades.
  • Said impeller 7 is placed inside the diffusion chamber 8, limited by the diffuser 9.
  • the conduit 10, of circular cross section, allows the liquid to enter the diffusion pump 8, which leaves discharged by the outlet of the liquid 11 from said chamber 8.
  • the pump body 2 is divided into two contiguous longitudinal portions, an anterior or prefilter 12, and a posterior 13, defined internally by a circular front partition 14.
  • the diffusion chamber 8 configured by the diffuser 9 and the discharge chamber 15 which occupies the remaining volume.
  • the prefilter 12 comprises an external container 16, in which the external suction inlet for entering the liquid in the prefilter 12 and the horizontal circular mouth of the external container 16 are unified into a single horizontal circular opening 17, formed at the end upper open of a cylindrical upper portion 18 of said external container 16 provided with an external thread 19.
  • a filter cup 20 Inside the outer container 16 is disposed a filter cup 20, provided at its mouth with a peripheral rim 21 projecting outwards, designed to be able to bear on the edge of said opening 17. Said edge of the opening 17 is provided with a groove into which a seal 22 is introduced.
  • a tubular piece 23 preferably bent, provided at one of its ends with a flange 24, which has substantially the same diameter as that of the opening 17 of the external container 16, and which is adapted to be able to lean on the edge thereof.
  • the part 23 also comprises a pierced nut 25, through the central orifice through which the said part 23 passes.
  • the nut 25 is adapted to be screwed around the external thread 19 of the cylindrical upper portion 18 of the external container 16.
  • the screw nut 25 When tightened during screwing, the screw nut 25 compresses said flange 24 of the part 23 against the upper edge of the opening 17, compressing the flange 21 and said seal 22 between the flange 24 and the upper edge of the opening 17.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Water Supply & Treatment (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Centrifugal Separators (AREA)

Abstract

Centrifugal pump (1) for recirculating water, applicable to swimming pools, which comprises a prefilter (12), a delivery chamber (15) and an electric motor (4), the shaft (6) of which sets in motion an impeller wheel (vane wheel) (7) which rotates in a diffusion chamber (8). The prefilter comprises a bowl filter (bucket filter) (20) inside an external container (16) so that the liquid drawn in penetrates the external container (16) via the external intake opening and has necessarily to flow through the walls of the said bowl filter (20) before reaching the pump. The external container (16) is equipped with just one externally threaded circular opening (17) equipped at its edge with a seal (22), a tubular component (23) being arranged and designed to bear on the edge of the opening (17) and which fits into a perforated screw nut (25) designed to be able to be screwed around the external screw (19) of the external container. <IMAGE>

Description

Secteur technique de l'inventionTechnical sector of the invention

La présente invention concerne une pompe centrifuge pour la recirculation de l'eau, applicable en particulier aux piscines, du genre de celles qui comprennent un préfiltre et une chambre de refoulement entre la pompe et le préfiltre, la pompe étant munie d'un électromoteur dont l'axe met en mouvement une roue à aubes de plusieurs aubes qui tourne à l'intérieur d'une chambre de diffusion, fermée en particulier par un diffuseur, le liquide entrant de façon coaxiale à la roue à aubes et sortant expulsé par la force centrifuge jusqu'à une chambre de refoulement disposée entre l'électromoteur et le préfiltre, le préfiltre étant conçu de façon qu'il comprend un godet-filtre vertical placé à l'intérieur d'un récipient externe muni d'une bouche d'aspiration externe, d'une embouchure circulaire horizontale fermée de façon étanche, permettant l'introduction et l'extraction du godet-filtre, et d'un conduit de sortie relié à l'entrée axiale de la roue à aubes (7), de façon que le liquide aspiré pénètre dans le récipient externe (16) par la bouche d'aspiration externe et doit passer obligatoirement à travers les parois dudit godet-filtre (20) avant d'arriver à la pompe.The present invention relates to a centrifugal pump for the recirculation of water, applicable in particular to swimming pools, of the type which includes a prefilter and a discharge chamber between the pump and the prefilter, the pump being provided with an electric motor, the axis sets in motion an impeller of several blades which rotates inside a diffusion chamber, closed in particular by a diffuser, the liquid entering coaxially with the impeller and exiting expelled by force centrifugal to a discharge chamber arranged between the electric motor and the prefilter, the prefilter being designed so that it comprises a vertical filter cup placed inside an external container fitted with a suction mouth external, of a horizontal circular mouth closed in a sealed manner, allowing the introduction and the extraction of the filter cup, and of an outlet conduit connected to the axial entry of the impeller (7), d e so that the sucked liquid enters the external container (16) through the external suction mouth and must pass through the walls of said filter cup (20) before arriving at the pump.

Antécédents de l'inventionHistory of the invention

Les réalisations connues jusqu'à présent de pompes centrifuges pour la recirculation de l'eau des piscines comprennent essentiellement une électropompe centrifuge et un préfiltre qui sont reliés et alignés longitudinalement. L'électropompe centrifuge comprend un électromoteur dont l'axe de sortie est accouplé à une roue à aubes logée dans une chambre de diffusion et qui est munie d'une pluralité d'aubes, lesquelles, incitées par l'électromoteur, aspirent le liquide à travers le préfiltre et l'expulsent par la force centrifuge vers le conduit de sortie, qui, en général, est placé ortogonal par rapport à l'axe longitudinal défini par l'assamblage de l'électropompe et le préfiltre. Le préfiltre, lequel a une forme globale cylindrique ou troncoconique, comprend un godet-filtre disposé de façon que la totalité du liquide refoulé par la pompe centrifuge doit traverser d'abord les parois du godet-filtre avant d'atteindre la chambre de diffusion, une pluralité d'orifices à manière de crible étant prévue dans les parois latérales du godet-filtre, qui retient à partir d'une certaine taille, les solides en suspension transportés par l'eau. Le préfiltre comprend en outre, un couvercle qui permet l'extraction, nettoyage et replacement du godet-filtre, et une entrée d'aspiration externe où est relié le conduit d'entrée du liquide à la pompe.The previously known embodiments of centrifugal pumps for recirculating swimming pool water essentially comprise a centrifugal electric pump and a prefilter which are connected and aligned longitudinally. The centrifugal electric pump comprises an electric motor, the output axis of which is coupled to an impeller housed in a diffusion chamber and which is provided with a plurality of blades, which, prompted by the electric motor, draw the liquid to through the prefilter and expel it by centrifugal force to the outlet duct, which, in general, is placed orthogonal to the longitudinal axis defined by the assembly of the electric pump and the prefilter. The prefilter, which has an overall cylindrical or frustoconical shape, comprises a filter cup arranged so that all of the liquid discharged by the centrifugal pump must first pass through the walls of the filter cup before reaching the diffusion chamber, a plurality of screen-like orifices being provided in the side walls of the filter cup, which retains, from a certain size, the suspended solids transported by water. The prefilter further includes a cover which allows the extraction, cleaning and replacement of the filter cup, and an external suction inlet where the liquid inlet duct to the pump is connected.

Comme exemples de réalisations connues de pompes centrifuges comme celles qui viennent d'être décrites, on peut citer les modèles d'utilité espagnols Nos. 284.474 et 291.043 qui comprennent un préfiltre dans lequel l'entrée d'aspiration externe est disposée transversalement entre le couvercle du récipient externe et l'extrémité supérieure du godet-filtre.As examples of known embodiments of centrifugal pumps like those which have just been described, we can cite the Spanish utility models Nos. 284.474 and 291.043 which include a prefilter in which the external suction inlet is arranged transversely between the cover of the external container and the upper end of the filter cup.

La disposition de l'entrée d'aspiration externe décrite dans les réalisations connues de pompes centrifuges, présente, parmi d'autres inconvénients importants, en premier lieu le fait que l'entrée d'aspiration externe occupe une position fixe par rapport à l'axe donné par l'accouplement de l'électropompe et le préfiltre, ce qui limite en grande mesure le positionnement de la pompe centrifuge par rapport au conduit d'entrée du liquide, et par conséquent, dans la plupart des cas, l'accouplement dudit conduit d'entrée à l'entrée d'aspiration externe exige l'emploi de plusieurs accessoires et/ou que ledit conduit soit courbé, et, en deuxième lieu, qu'il doit rester un espace important entre le couvercle du récipient externe et l'entrée du godet-filtre, ce qui réduit considérablement les dimensions de ce dernier.The arrangement of the external suction inlet described in the known embodiments of centrifugal pumps has, among other important drawbacks, first of all the fact that the external suction inlet occupies a fixed position relative to the axis given by the coupling of the electric pump and the prefilter, which largely limits the positioning of the centrifugal pump relative to the liquid inlet duct, and consequently, in most cases, the coupling of said inlet duct to the external suction inlet requires the use of several accessories and / or that said duct is curved, and, secondly, that there must be a large space between the lid of the outer container and the entry of the filter cup, which considerably reduces the dimensions of the latter.

Explication de l'inventionExplanation of the invention

La pompe centrifuge objet de la présente invention élimine tous les inconvenients mentionnés antérieurement, et elle se caractérise essentiellement par le fait que ladite entrée d'aspiration et ladite embouchure circulaire horizontale du récipient externe sont unifiées en une seule ouverture circulaire horizontale réalisée à l'extrémité supérieure ouverte d'une portion supérieure cylindrique dudit récipient externe, filetée extérieurement, ledit godet-filtre vertical étant muni à son embouchure d'un rebord périphérique en saillie vers l'extérieur, conçu pour s'appuyer sur le bord de ladite ouerture circulaire horizontale du récipient externe, ledit bord étant pourvu d'une rainure dans laquelle est introduit un joint étanche, et une pièce tubulaire coudée étant prévue à une des extrémités d'une bride, ayant sensiblement le même diamètre que celui de l'embouchure du récipient externe et adaptée pour pouvoir s'appuyer sur cette dernière, un écrou percé au centre de ladite embouchure étant prévu, à travers l'orifice duquel passe ladite pièce tubulaire coudée, qui est adaptée pour se visser autour du filet extérieur de ladite portion supérieure cylindrique du récipient externe, de telle façon que lorsqu'elle se serre au cours du vissage, elle comprime la bride de ladite pièce tubulaire coudée contre le bord supérieur de l'embouchure du récipient externe, comprimant de cette façon le rebord périphérique du godet-filtre et ledit joint d'étanchéité entre la bride de la pièce tubulaire coudée et le bord supérieur de l'ouverture du récipient externe.The centrifugal pump which is the subject of the present invention eliminates all the drawbacks mentioned previously, and it is essentially characterized by the fact that said suction inlet and said horizontal circular mouth of the external container are unified into a single horizontal circular opening made at the end upper open of a cylindrical upper portion of said outer container, externally threaded, said vertical filter cup being provided at its mouth with a peripheral rim projecting outwards, designed to rest on the edge of said horizontal circular opening of the outer container, said edge being provided with a groove into which a tight seal is introduced, and a bent tubular piece being provided at one end of a flange, having substantially the same diameter as that of the mouth of the outer container and adapted to be able to rest on the latter, a nut drilled in the center of said mouth being provided, through the orifice through which passes said bent tubular piece, which is adapted to be screwed around the external thread of said cylindrical upper portion of the external container, so that when it is tightened during screwing, it compresses the flange of said tubular part e bent against the upper edge of the mouth of the outer container, thereby compressing the peripheral rim of the filter cup and said seal between the flange of the bent tubular part and the upper edge of the opening of the outer container .

Brève description des dessinsBrief description of the drawings

L'unique figure des dessins illustre une vue en section supérieure latérale de la pompe centrifuge objet de l'invention. Sur ce dessin on peut apprécier que la pompe 1 comprend un corps de pompe 2 accouplé au moyen d'une bride intermédiaire 3, et un électromoteur 4, monté sur un support 5.The single figure of the drawings illustrates a view in upper lateral section of the centrifugal pump which is the subject of the invention. In this drawing we can appreciate that the pump 1 comprises a pump body 2 coupled by means of an intermediate flange 3, and an electric motor 4, mounted on a support 5.

L'extrémité de l'axe 6 de sortie de l'électromoteur 4 traverse la bride 3 et elle est accouplée à la roue à aubes 7 munie d'une pluralité d'aubes. Ladite roue à aubes 7 est placée à l'intérieur de la chambre de diffusion 8, limitée par le diffuseur 9. Le conduit 10, de section transversale circulaire, permet l'entrée du liquide à la pompe de diffusion 8, lequel sort refoulé par la sortie du liquide 11 de ladite chambre 8.The end of the output axis 6 of the electric motor 4 passes through the flange 3 and it is coupled to the impeller 7 provided with a plurality of blades. Said impeller 7 is placed inside the diffusion chamber 8, limited by the diffuser 9. The conduit 10, of circular cross section, allows the liquid to enter the diffusion pump 8, which leaves discharged by the outlet of the liquid 11 from said chamber 8.

Le corps de pompe 2 est divisé en deux portions longitudinales contigües, une antérieure ou préfiltre 12, et une postérieure 13, définies intérieurement par une cloison frontale circulaire 14.The pump body 2 is divided into two contiguous longitudinal portions, an anterior or prefilter 12, and a posterior 13, defined internally by a circular front partition 14.

Dans la portion postérieure 13 se trouve définie la chambre de diffusion 8, configurée par le diffuseur 9 et la chambre de refoulement 15 qui occupe le volume restant.In the rear portion 13 is defined the diffusion chamber 8, configured by the diffuser 9 and the discharge chamber 15 which occupies the remaining volume.

Le préfiltre 12 comprend un récipient externe 16, dans lequel la bouche d'aspiration externe d'entrée de liquide au préfiltre 12 et l'embouchure circulaire horizontale du récipient externe 16 sont unifiées en une seule ouverture circulaire horizontale 17, réalisée à l'extrémité supérieure ouverte d'une portion supérieure cylindrique 18 dudit récipient externe 16 muni d'un filet externe 19.The prefilter 12 comprises an external container 16, in which the external suction inlet for entering the liquid in the prefilter 12 and the horizontal circular mouth of the external container 16 are unified into a single horizontal circular opening 17, formed at the end upper open of a cylindrical upper portion 18 of said external container 16 provided with an external thread 19.

A l'intérieur du récipient externe 16 est disposé un godet-filtre 20, muni à son embouchure d'un rebord périphérique 21 en saillie vers l'extérieur, conçu pour pouvoir s'appuyer sur le bord de ladite ouverture 17. Ledit bord de l'ouverture 17 est pourvu d'une rainure dans laquelle est introduit un joint d'étanchéité 22.Inside the outer container 16 is disposed a filter cup 20, provided at its mouth with a peripheral rim 21 projecting outwards, designed to be able to bear on the edge of said opening 17. Said edge of the opening 17 is provided with a groove into which a seal 22 is introduced.

Dans l'ouverture 17 est disposée de façon amovible une pièce tubulaire 23 préférablement coudée, munie à une de ses extrémités d'une bride 24, qui a sensiblement le même diamètre que celui de l'ouverture 17 du récipient externe 16, et qui est adaptée pour pouvoir s'appuyer sur le bord de celle-ci.In the opening 17 is removably arranged a tubular piece 23, preferably bent, provided at one of its ends with a flange 24, which has substantially the same diameter as that of the opening 17 of the external container 16, and which is adapted to be able to lean on the edge thereof.

La pièce 23 comprend aussi un écrou percé 25, a travers l'orifice central duquel passe ladite pièce 23. L'écrou 25 est adapté pour se visser autour du filet externe 19 de la portion supérieure cylindrique 18 du récipient externe 16.The part 23 also comprises a pierced nut 25, through the central orifice through which the said part 23 passes. The nut 25 is adapted to be screwed around the external thread 19 of the cylindrical upper portion 18 of the external container 16.

Quant il est serré lors du vissage, l'écrou vis 25 comprime ladite bride 24 de la pièce 23 contre le bord supérieur de l'ouverture 17, comprimant le rebord 21 et ledit joint 22 entre la bride 24 et le bord supérieur de l'ouverture 17.When tightened during screwing, the screw nut 25 compresses said flange 24 of the part 23 against the upper edge of the opening 17, compressing the flange 21 and said seal 22 between the flange 24 and the upper edge of the opening 17.

La nature de l'invention ayant été suffisamment décrite, ainsi que la façon de la mettre en pratique, elle peut être soumise à des variations de détails, toutefois que son principe fondamental ne soit ni altéré, ni changé, ni modifié, l'essentiel de l'invention étant résumé dans la revendication suivante.The nature of the invention having been sufficiently described, as well as the way of putting it into practice, it can be subjected to variations of details, however that its fundamental principle is neither altered, nor changed, nor modified, the essential of the invention being summarized in the following claim.

Claims (1)

1.- Pompe centrifuge (1) pour la recirculation de l'eau, applicable en particulier aux piscines, du genre de celles qui comprennent un préfiltre (12) et une chambre de refoulement (15) entre la pompe (1) et le préfiltre, la pompe étant munie d'un électromoteur (4) dont l'axe (6) met en mouvement une roue à aubes (7) de plusieurs aubes, qui tourne à l'intérieur d'une chambre de diffusion (8), fermée en particulier par un diffuseur (9), le liquide entrant coaxial à la roue à aubes et sortant expulsé par la force centrifuge jusqu'à une chambre de refoulement (15) située entre l'électromoteur (4) et le préfiltre (12), le préfiltre étant conçu de façon qu'il comprend un godet-filtre (20) vertical, placé à l'intérieur d'un récipient externe (16) muni d'une entrée d'aspiration externe, d'une embouchure circulaire horizontale fermée de façon étanche, permettant l'introduction et l'extraction du godet-filtre, et d'un conduit de sortie relié à l'entrée axiale de la roue à aubes (7), de façon que le liquide aspiré pénètre dans le récipient externe (16) par l'entrée d'aspiration externe et doit passer obligatoirement à travers les parois dudit godet-filtre (20) avant d'arriver à la pompe, caractérisée par le fait que ladite entrée d'aspiration et ladite embouchure circulaire horizontale du récipient externe (16) sont unifiées en une seule ouverture circulaire horizontale (17), réalisée à l'extrémité supérieure ouverte d'une portion supérieure cylindrique (18) dudit récipient externe, et filetée extérieurement, ledit godet-filtre (20) étant disposé verticalement, muni à son embouchure d'un rebord périphérique (21) en saillie vers l'extérieur, conçu pour s'appuyer sur le bord de ladite ouverture circulaire horizontale (17) du récipient externe, ledit bord étant pourvu d'une rainure dans laquelle est introduit un joint étanche (22), une pièce tubulaire (22) étant disposée à une des extrémités d'une bride (24), ayant sensiblement le même diamètre que celui de l'ouverture (17) du récipient externe et conçue pour s'appuyer sur le bord de cette dernière, un écrou percé au centre (25) étant prévu, à travers l'orifice duquel passe ladite pièce tubulaire (23), adaptée pour pouvoir se visser autour du filet extérieur (19) de ladite portion supérieure cylindrique (18) du récipient externe, de façon que lorsque ledit écrou de vis est serré au cours du vissage, il comprime la bride (24) de ladite pièce tubulaire contre le bord supérieur de l'ouverture (17) du récipient externe (16), comprimant de cette façon le rebord périphérique (21) du godet-filtre et ledit joint d'étanchéité (22) entre la bride (24) de la pièce tubulaire et le bord supérieur de l'ouverture (17) du récipient externe. 1.- Centrifugal pump (1) for the recirculation of water, applicable in particular to swimming pools, of the type which include a prefilter (12) and a discharge chamber (15) between the pump (1) and the prefilter , the pump being provided with an electric motor (4) whose axis (6) sets in motion an impeller (7) of several blades, which rotates inside a closed diffusion chamber (8) in particular by a diffuser (9), the incoming liquid coaxial with the impeller and outgoing expelled by centrifugal force to a discharge chamber (15) located between the electric motor (4) and the prefilter (12), the prefilter being designed so that it comprises a vertical filter cup (20), placed inside an external container (16) provided with an external suction inlet, with a closed horizontal circular mouth of sealingly, allowing the introduction and extraction of the filter cup, and an outlet conduit connected to the axial inlet of the impeller (7), so that the sucked liquid enters the external container (16) through the external suction inlet and must pass through the walls of said filter cup (20) before reaching the pump, characterized in that said suction inlet and said horizontal circular mouth of the external container (16) are unified into a single horizontal circular opening (17), formed at the open upper end of a cylindrical upper portion (18) of said external container, and externally threaded, said filter cup (20) being arranged vertically, provided at its mouth with a peripheral rim (21) projecting outwards, designed to s '' press on the edge of said horizontal circular opening (17) of the external container, said edge being provided with a groove in which is introduced a seal (22), a tubular part (22) being disposed at one of the ends of a flange (24), having substantially the same diameter as that of the opening (17) of the external container and designed to rest on the edge of the latter, a nut drilled in the center (25) being provided, through the the orifice through which said tubular part (23) passes, adapted to be able to be screwed around the external thread (19) of said upper cylindrical portion (18) of the external container, so that when said screw nut is tightened during screwing, it compresses the flange (24) of said tubular piece against the upper edge of the opening (17) of the outer container (16), thereby compressing the peripheral rim (21) of the filter cup and said seal (22) between the flange (24) of the tubular part and the upper edge of the opening (17) of the external container.
EP19940500199 1993-12-03 1994-11-28 Centrifugal pump for water recirculation Expired - Lifetime EP0657602B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES9302539A ES2076883B1 (en) 1993-12-03 1993-12-03 CENTRIFUGAL PUMP FOR WATER RECIRCULATION.
ES9302539 1993-12-03

Publications (2)

Publication Number Publication Date
EP0657602A1 true EP0657602A1 (en) 1995-06-14
EP0657602B1 EP0657602B1 (en) 1997-08-06

Family

ID=8283831

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940500199 Expired - Lifetime EP0657602B1 (en) 1993-12-03 1994-11-28 Centrifugal pump for water recirculation

Country Status (3)

Country Link
EP (1) EP0657602B1 (en)
DE (1) DE69404817T2 (en)
ES (2) ES2076883B1 (en)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1267085A2 (en) 2001-06-15 2002-12-18 Bogemar, S.L. Electric pump for the recirculation of water
WO2004029464A1 (en) * 2002-09-24 2004-04-08 Crane Limited A suction diffuser
US7531092B2 (en) * 2005-11-01 2009-05-12 Hayward Industries, Inc. Pump
US8186517B2 (en) 2005-11-01 2012-05-29 Hayward Industries, Inc. Strainer housing assembly and stand for pump
US8297920B2 (en) 2008-11-13 2012-10-30 Hayward Industries, Inc. Booster pump system for pool applications
DE102006023379B4 (en) * 2006-05-17 2013-10-02 Al-Ko Kober Ag liquid pump
EP2706275A3 (en) * 2012-09-07 2014-08-06 Herborner Pumpenfabrik J.H. Hoffmann GmbH & Co. KG Connection system
CN104006003A (en) * 2013-02-23 2014-08-27 天佑电器（苏州）有限公司 Water drainage system
CN105508301A (en) * 2015-12-18 2016-04-20 安徽南方化工泵业有限公司 Corrosion-resistant filtering type pump
CN108204359A (en) * 2018-01-09 2018-06-26 江苏绩优机电科技有限公司 Explosion-proof pump
CN110080994A (en) * 2019-06-06 2019-08-02 湖北泉洁二次供水工程有限公司 A kind of water pump anti-clogging structure
US10718337B2 (en) 2016-09-22 2020-07-21 Hayward Industries, Inc. Self-priming dedicated water feature pump
CN111779682A (en) * 2020-08-07 2020-10-16 新昌县七星街道博创机械厂 A water pump structure for hydraulic engineering has a speed governing function
US11193504B1 (en) 2020-11-24 2021-12-07 Aquastar Pool Products, Inc. Centrifugal pump having a housing and a volute casing wherein the volute casing has a tear-drop shaped inner wall defined by a circular body region and a converging apex with the inner wall comprising a blocker below at least one perimeter end of one diffuser blade
USD946629S1 (en) 2020-11-24 2022-03-22 Aquastar Pool Products, Inc. Centrifugal pump
USD986289S1 (en) 2020-11-24 2023-05-16 Aquastar Pool Products, Inc. Centrifugal pump
WO2023109253A1 (en) * 2021-12-17 2023-06-22 天津市龙新石油机械制造股份有限公司 Multifunctional pump capable of preventing sand sticking
CN117128191A (en) * 2023-09-27 2023-11-28 利欧集团浙江泵业有限公司 Hydraulic performance improving device
CN117366003A (en) * 2023-12-07 2024-01-09 珠海格力电器股份有限公司 Sealing structure for liquid inlet of liquid pump and liquid pump compressor formed by sealing structure

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8182212B2 (en) 2006-09-29 2012-05-22 Hayward Industries, Inc. Pump housing coupling
DE102010038137B4 (en) 2010-10-12 2018-03-15 Herborner Pumpentechnik Gmbh & Co Kg Circulation device for baths
US9079128B2 (en) 2011-12-09 2015-07-14 Hayward Industries, Inc. Strainer basket and related methods of use
CN111622957A (en) * 2020-06-15 2020-09-04 张扬 Water suction pump with anti-blocking function for road construction
CN111878416A (en) * 2020-08-15 2020-11-03 唐翠华 Mechanical seal protector of water pump

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB379738A (en) * 1931-06-04 1932-09-05 Stone J & Co Ltd Improvements in and relating to electrically driven pumps
GB500072A (en) * 1937-12-22 1939-02-02 Drysdale & Co Ltd Improvements in or relating to strainers for centrifugal pumps
EP0544610A1 (en) * 1991-11-13 1993-06-02 Doll, S.A. Pre-filter for swimming pool installations

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES284474Y (en) * 1985-01-31 1986-10-16 Bombas Electricas, S.A. CENTRIFUGAL PUMP FOR WATER RECIRCULATION
ES291043Y (en) * 1985-11-29 1986-12-01 Bombas Electricas,S.A. CENTRIFUGAL PUMP FOR WATER RECIRCULATION

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB379738A (en) * 1931-06-04 1932-09-05 Stone J & Co Ltd Improvements in and relating to electrically driven pumps
GB500072A (en) * 1937-12-22 1939-02-02 Drysdale & Co Ltd Improvements in or relating to strainers for centrifugal pumps
EP0544610A1 (en) * 1991-11-13 1993-06-02 Doll, S.A. Pre-filter for swimming pool installations

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1267085A2 (en) 2001-06-15 2002-12-18 Bogemar, S.L. Electric pump for the recirculation of water
WO2004029464A1 (en) * 2002-09-24 2004-04-08 Crane Limited A suction diffuser
US7531092B2 (en) * 2005-11-01 2009-05-12 Hayward Industries, Inc. Pump
US8186517B2 (en) 2005-11-01 2012-05-29 Hayward Industries, Inc. Strainer housing assembly and stand for pump
DE102006023379B4 (en) * 2006-05-17 2013-10-02 Al-Ko Kober Ag liquid pump
US8297920B2 (en) 2008-11-13 2012-10-30 Hayward Industries, Inc. Booster pump system for pool applications
US8734098B2 (en) 2008-11-13 2014-05-27 Hayward Industries, Inc. Booster pump system for pool applications
US9651074B2 (en) 2012-09-07 2017-05-16 Herborner Pumpenfabrik Connection system
EP2706275A3 (en) * 2012-09-07 2014-08-06 Herborner Pumpenfabrik J.H. Hoffmann GmbH & Co. KG Connection system
US10054135B2 (en) 2013-02-23 2018-08-21 Suzhou Cleva Electric Appliance Co., Ltd. Drainage system with filter connection
CN104006003B (en) * 2013-02-23 2016-12-28 天佑电器（苏州）有限公司 A kind of drainage system
WO2014127689A1 (en) * 2013-02-23 2014-08-28 天佑电器（苏州）有限公司 Drainage system
CN104006003A (en) * 2013-02-23 2014-08-27 天佑电器（苏州）有限公司 Water drainage system
CN105508301A (en) * 2015-12-18 2016-04-20 安徽南方化工泵业有限公司 Corrosion-resistant filtering type pump
US10718337B2 (en) 2016-09-22 2020-07-21 Hayward Industries, Inc. Self-priming dedicated water feature pump
CN108204359A (en) * 2018-01-09 2018-06-26 江苏绩优机电科技有限公司 Explosion-proof pump
CN108204359B (en) * 2018-01-09 2019-04-19 江苏绩优机电科技有限公司 Explosion-proof pump
CN110080994A (en) * 2019-06-06 2019-08-02 湖北泉洁二次供水工程有限公司 A kind of water pump anti-clogging structure
CN111779682A (en) * 2020-08-07 2020-10-16 新昌县七星街道博创机械厂 A water pump structure for hydraulic engineering has a speed governing function
US11193504B1 (en) 2020-11-24 2021-12-07 Aquastar Pool Products, Inc. Centrifugal pump having a housing and a volute casing wherein the volute casing has a tear-drop shaped inner wall defined by a circular body region and a converging apex with the inner wall comprising a blocker below at least one perimeter end of one diffuser blade
USD946629S1 (en) 2020-11-24 2022-03-22 Aquastar Pool Products, Inc. Centrifugal pump
US11408441B1 (en) 2020-11-24 2022-08-09 Aquastar Pool Products, Inc. Centrifugal pump
USD971966S1 (en) 2020-11-24 2022-12-06 Aquastar Pool Products, Inc. Centrifugal pump
USD986289S1 (en) 2020-11-24 2023-05-16 Aquastar Pool Products, Inc. Centrifugal pump
US11668329B1 (en) 2020-11-24 2023-06-06 Aquastar Pool Products, Inc. Centrifugal pump
WO2023109253A1 (en) * 2021-12-17 2023-06-22 天津市龙新石油机械制造股份有限公司 Multifunctional pump capable of preventing sand sticking
CN117128191A (en) * 2023-09-27 2023-11-28 利欧集团浙江泵业有限公司 Hydraulic performance improving device
CN117366003A (en) * 2023-12-07 2024-01-09 珠海格力电器股份有限公司 Sealing structure for liquid inlet of liquid pump and liquid pump compressor formed by sealing structure
CN117366003B (en) * 2023-12-07 2024-05-07 珠海格力电器股份有限公司 Sealing structure for liquid inlet of liquid pump and liquid pump compressor formed by sealing structure

Also Published As

Publication number Publication date
EP0657602B1 (en) 1997-08-06
DE69404817D1 (en) 1997-09-11
ES2076883B1 (en) 1998-10-16
ES2107163T3 (en) 1997-11-16
ES2076883R (en) 1998-02-16
ES2076883A2 (en) 1995-11-01
DE69404817T2 (en) 1997-12-18

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