EP0544610B1 - Pre-filter for swimming pool installations - Google Patents

Pre-filter for swimming pool installations Download PDF

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Publication number
EP0544610B1
EP0544610B1 EP92500146A EP92500146A EP0544610B1 EP 0544610 B1 EP0544610 B1 EP 0544610B1 EP 92500146 A EP92500146 A EP 92500146A EP 92500146 A EP92500146 A EP 92500146A EP 0544610 B1 EP0544610 B1 EP 0544610B1
Authority
EP
European Patent Office
Prior art keywords
filter
pump
cover
mouth
swimming pool
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.)
Expired - Lifetime
Application number
EP92500146A
Other languages
German (de)
French (fr)
Other versions
EP0544610A1 (en
Inventor
Robert Garrigos Ruiz
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.)
Doll SA
Original Assignee
Doll SA
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 Doll SA filed Critical Doll SA
Publication of EP0544610A1 publication Critical patent/EP0544610A1/en
Application granted granted Critical
Publication of EP0544610B1 publication Critical patent/EP0544610B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F04D13/0613—Special connection between the rotor compartments
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5806—Cooling the drive system

Definitions

  • pre-filters generally consist of a housing and cover laterally fitted to a suction/force pump and provided inside with a basket-shaped grille, the housing comprising a water inlet and lower down an opposing outlet for the filtered water sucked by the pump.
  • a pre-filter of this kind is described in the US Patent 3,252,575.
  • the pre-filters which have been used until now have a number of problems, of which it is worth mentioning the poor suction performance of the attached pump, imperfect filtration, difficulty in opening (due to depression effects) for cleaning, and vibrations transmitted to the ground where the pre-filter/pump assembly is fitted.
  • pre-filters are fitted to a pump whose motor is cooled by the circulation of water from the same pre-filter wherefore the housing is fixed to the pump motor by means of an intermediate yoke consisting of an element in which the pump wheel is located.
  • this circular yoke element On the face which abuts against the pre-filter housing, this circular yoke element is provided with a cavity in which the pump wheel is located, whilst on the opposite face the yoke element is provided with a central tubular trunnion in which the pump axle is located by means of a suitable bushing.
  • the present invention is characterised by the presence of various longitudinal channels distributed about the circumference of said tubular trunnion which channels let go through them the water for cooling the pump motor, the water being driven towards it.
  • the invention is further characterised in that a cavity provided with a water delivery mouth is arranged adjacent to the pre-filter housing, the yoke element being fitted to the mouth of said cavity .
  • the cover consists of two elements, the cover itself and a screw collar by means of which the cover is secured against the upper mouth of the pre-filter housing, and with which arrangement the depression problem in opening the cover is solved since the screw collar is removed first and then the cover can be lifted easily.
  • a further embodiment of this invention is the pre-filter/pump assembly which is fixed to a base by means of elastic pads which eliminate the transmission of all vibration to the ground.
  • a further embodiment is the handle of the basket-shaped grille which forms an integral part thereof.
  • Figure 1 shows a vertical section of the pre-filter housing and the yoke element.
  • Figure 2 represents a frontal view of the yoke element as seen from the face which abuts against the pre-filter housing.
  • Figure 3 illustrates, again in vertical section, the assembled pre-filter/pump arrangement.
  • Figures 4 and 5 show respectively a vertical section and a half plan view of the pre-filter housing with the cover fitted.
  • Figure 6 is a perspective view showing details of the handle of the basket-shaped grille.
  • the pre-filter consists of a truncated, slightly conically shaped housing 1 which forms an upper mouth receptacle 2 with an external thread 3 for the cover.
  • the housing is provided with an upper, radially oriented water inlet 4 , inside is fitted a basket-shaped grille 5 and at the bottom of the housing is a radially oriented purge orifice.
  • the housing Opposing and below the water inlet 4 , the housing is provided with an outlet 7 for the filtered water. This outlet leads to a lateral cavity 8 adjacent to the housing 1 at the top of which is located another outlet 9 through which the water passes to the outside.
  • a yoke 11 is attached and fixed to the mouth 10 of the lateral cavity 8 of the housing 1 and comprises a circular element 12 whose face 13 abuts against the housing 1 to form a peripherally threaded cavity 14 in which the pump wheel 15 of the pump 16 is located.
  • the cavity 8 and the yoke element 12 are fixed together by means of their respective peripheral rebates 17 and 18 .
  • the yoke element 12 On the face oriented away from the cavity 14 , the yoke element 12 is provided with a tubular trunnion 19 in which one of the ends of the pump axle 20 is located by means of a bushing 21 , wherein the axle is tubular and along its length runs the conduit 22 and wherein said face of the yoke element also comprises a peripheral rebate 23 for fitting to the housing 24 of the pump motor 25 .
  • the aforementioned tubular trunnion 19 is provided with a number of longitudinal channels 26 distributed about its circumference and through which the water for cooling the motor 25 enters. The water is driven towards the motor, after cooling which it passes along the conduit 22 of the pump axle to arrive at the cavity 14 where the pump wheel is located, passing then to the outlet 9 in the pre-filter housing.
  • the pre-filter/pump assembly is fixed to the ground by means of an interposed base 27 which supports it by means of elastic pads 28 .
  • a cover 29 is fitted to the upper mouth of the pre-filter housing 1 by means of a screw collar 30 where said cover is advantageously transparent and has a diametric external protrusion 31 which may, if desired, include a depression purge orifice which can be closed by means of a stopper.
  • the periphery of the cover is provided with an angular section and an underlying rim 32 which fits into the internal periphery of the mouth of said housing, and an external rim 33 which is seated on top of said mouth with an interposed o-ring seal 34 .
  • the cover is secured by means of an internal flange 35 on the upper edge of the screw collar wherein said flange presses against said rim 33 of the cover.
  • the basket-shaped grille 5 is stabilised within the housing 1 by the pressure exerted from above by a ring-shaped protrusion 36 provided on the inside of the cover 29 , wherein the pressure is elastically maintained by means of the transverse handle 37 which forms a single piece with basket-shaped grille.
  • the handle consists of two flexible strips 38 and 39 which begin at diametrically opposed points on the port of the basket-shaped grille and whose two free ends are fixed together by introducing a T-shaped projection 40 on one of the strips into an eye 41 in the other strip.

Description

  • Several versions of this type of unit are already known wherein pre-filters generally consist of a housing and cover laterally fitted to a suction/force pump and provided inside with a basket-shaped grille, the housing comprising a water inlet and lower down an opposing outlet for the filtered water sucked by the pump. A pre-filter of this kind is described in the US Patent 3,252,575. However, the pre-filters which have been used until now have a number of problems, of which it is worth mentioning the poor suction performance of the attached pump, imperfect filtration, difficulty in opening (due to depression effects) for cleaning, and vibrations transmitted to the ground where the pre-filter/pump assembly is fitted.
  • These pre-filters are fitted to a pump whose motor is cooled by the circulation of water from the same pre-filter wherefore the housing is fixed to the pump motor by means of an intermediate yoke consisting of an element in which the pump wheel is located.
  • On the face which abuts against the pre-filter housing, this circular yoke element is provided with a cavity in which the pump wheel is located, whilst on the opposite face the yoke element is provided with a central tubular trunnion in which the pump axle is located by means of a suitable bushing.
  • The present invention is characterised by the presence of various longitudinal channels distributed about the circumference of said tubular trunnion which channels let go through them the water for cooling the pump motor, the water being driven towards it.
  • The invention is further characterised in that a cavity provided with a water delivery mouth is arranged adjacent to the pre-filter housing, the yoke element being fitted to the mouth of said cavity .
  • The cover consists of two elements, the cover itself and a screw collar by means of which the cover is secured against the upper mouth of the pre-filter housing, and with which arrangement the depression problem in opening the cover is solved since the screw collar is removed first and then the cover can be lifted easily.
  • A further embodiment of this invention is the pre-filter/pump assembly which is fixed to a base by means of elastic pads which eliminate the transmission of all vibration to the ground.
  • A further embodiment is the handle of the basket-shaped grille which forms an integral part thereof.
  • These and other embodiments will become more apparent in the Detailed Description, taken together with the three accompanying drawings which show a practical embodiment which represents only one non-limiting example of the scope of the present invention.
  • In the drawings:
  • Figure 1 shows a vertical section of the pre-filter housing and the yoke element.
  • Figure 2 represents a frontal view of the yoke element as seen from the face which abuts against the pre-filter housing. Figure 3 illustrates, again in vertical section, the assembled pre-filter/pump arrangement.
  • Figures 4 and 5 show respectively a vertical section and a half plan view of the pre-filter housing with the cover fitted.
  • Figure 6 is a perspective view showing details of the handle of the basket-shaped grille.
  • As the drawings show, the pre-filter consists of a truncated, slightly conically shaped housing 1 which forms an upper mouth receptacle 2 with an external thread 3 for the cover. The housing is provided with an upper, radially oriented water inlet 4, inside is fitted a basket-shaped grille 5 and at the bottom of the housing is a radially oriented purge orifice.
  • Opposing and below the water inlet 4, the housing is provided with an outlet 7 for the filtered water. This outlet leads to a lateral cavity 8 adjacent to the housing 1 at the top of which is located another outlet 9 through which the water passes to the outside.
  • A yoke 11 is attached and fixed to the mouth 10 of the lateral cavity 8 of the housing 1 and comprises a circular element 12 whose face 13 abuts against the housing 1 to form a peripherally threaded cavity 14 in which the pump wheel 15 of the pump 16 is located. The cavity 8 and the yoke element 12 are fixed together by means of their respective peripheral rebates 17 and 18.
  • On the face oriented away from the cavity 14, the yoke element 12 is provided with a tubular trunnion 19 in which one of the ends of the pump axle 20 is located by means of a bushing 21, wherein the axle is tubular and along its length runs the conduit 22 and wherein said face of the yoke element also comprises a peripheral rebate 23 for fitting to the housing 24 of the pump motor 25.
  • The aforementioned tubular trunnion 19 is provided with a number of longitudinal channels 26 distributed about its circumference and through which the water for cooling the motor 25 enters. The water is driven towards the motor, after cooling which it passes along the conduit 22 of the pump axle to arrive at the cavity 14 where the pump wheel is located, passing then to the outlet 9 in the pre-filter housing.
  • The pre-filter/pump assembly is fixed to the ground by means of an interposed base 27 which supports it by means of elastic pads 28.
  • A cover 29 is fitted to the upper mouth of the pre-filter housing 1 by means of a screw collar 30 where said cover is advantageously transparent and has a diametric external protrusion 31 which may, if desired, include a depression purge orifice which can be closed by means of a stopper.
  • In order to fit and secure the cover to the housing 1, the periphery of the cover is provided with an angular section and an underlying rim 32 which fits into the internal periphery of the mouth of said housing, and an external rim 33 which is seated on top of said mouth with an interposed o-ring seal 34. The cover is secured by means of an internal flange 35 on the upper edge of the screw collar wherein said flange presses against said rim 33 of the cover.
  • The basket-shaped grille 5 is stabilised within the housing 1 by the pressure exerted from above by a ring-shaped protrusion 36 provided on the inside of the cover 29, wherein the pressure is elastically maintained by means of the transverse handle 37 which forms a single piece with basket-shaped grille.
  • The handle consists of two flexible strips 38 and 39 which begin at diametrically opposed points on the port of the basket-shaped grille and whose two free ends are fixed together by introducing a T-shaped projection 40 on one of the strips into an eye 41 in the other strip.

Claims (4)

  1. A pump unit and pre-filter for swimming pool installations which pre-filter consists of a housing comprising a basket-shaped grille (5), closed with a cover (29) and laterally fitted to a suction/force pump (16), the motor of which is cooled by the water, characterised in that this fitting is by means of an independent yoke (11) whose face abutting the pump is provided with a tubular trunnion (19) which comprises various longitudinal channels (26) which let go through them the water for cooling the motor (25) of the pump (16), and that a cavity (8) provided with a water delivery mouth (9) has been arranged, adjacent to the pre-filter housing (1), the yoke (11) being attached and fixed to the mouth (10) of said cavity (8).
  2. A pump unit and pre-filter for swimming pool installations according to claim 1 characterised in that the cover (29) consists of two elements, the cover itself and a screw collar (30) by means of which the cover is secured to the upper mouth (2) of the pre-filter housing (1) wherefore the periphery of said cover (29) has an angular section (32-33) which fits into the internal periphery of said mouth (2) and which is supported by it where it is forced by an internal flange (35) on the upper edge of the screw collar (30).
  3. A pump unit and pre-filter for swimming pool installations according to claim 1 wherein the pre-filter is provided on a base (27) together with the pump (16) by means of interposed elastic pads (28) provided for fitting the pre-filter housing (1) to the base (27) and supporting the yoke (11) thereon.
  4. A pump unit and pre-filter for swimming pool installations according to claim 1 wherein the basket-shaped grille (5) comprises, and forms a single piece with, a handle (37) consisting of two flexible strips (38,39) which begin at diametrically opposed points on the mouth of the basket-shaped grille and whose free ends are fixed together (49,41).
EP92500146A 1991-11-13 1992-11-11 Pre-filter for swimming pool installations Expired - Lifetime EP0544610B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES9103597U 1991-11-13
ES19919103597U ES1019424Y (en) 1991-11-13 1991-11-13 PRE-FILTER FOR POOL FACILITIES.

Publications (2)

Publication Number Publication Date
EP0544610A1 EP0544610A1 (en) 1993-06-02
EP0544610B1 true EP0544610B1 (en) 1996-08-28

Family

ID=8275285

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92500146A Expired - Lifetime EP0544610B1 (en) 1991-11-13 1992-11-11 Pre-filter for swimming pool installations

Country Status (3)

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EP (1) EP0544610B1 (en)
DE (1) DE69213175T2 (en)
ES (1) ES1019424Y (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2076883B1 (en) * 1993-12-03 1998-10-16 Bombas Electricas Sa CENTRIFUGAL PUMP FOR WATER RECIRCULATION.
ES2192941B1 (en) 2001-06-15 2005-02-16 Bogemar, S.L. ELECTRIC PUMP FOR WATER RECIRCULATION.
FR2830203B1 (en) 2001-10-01 2004-09-24 Piscines Waterair FILTER STRUCTURE WITH ELECTRIC PUMP FOR POOL
FR2846383B1 (en) 2002-10-25 2005-07-08 Financ Piscine Equipement ELECTRIC PUMP FOR THE MAINTENANCE OF SWIMMING POOLS
FR2930602A1 (en) * 2008-04-28 2009-10-30 Gatech Sarl HYDRAULIC PUMP WITH SPHERICAL BALL JOINT
WO2012087763A1 (en) 2010-12-21 2012-06-28 Pentair Water Pool And Spa, Inc. Modular pump and filter system and method
WO2014060612A1 (en) * 2012-10-15 2014-04-24 Metalast, S.A.U. Pump for swimming pools
FR3022575B1 (en) * 2014-06-23 2016-07-22 Acis (Aqua Consult Ind Services) FILTRATION PUMP FOR SWIMMING POOL
EP3339649A1 (en) * 2016-12-20 2018-06-27 Einhell Germany AG Water pump

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2301063A (en) * 1941-07-12 1942-11-03 Ingersoll Rand Co Pumping mechanism
US3252575A (en) * 1962-06-26 1966-05-24 Jacuzzi Bros Inc Pump and filter assembly for swimming pool systems
DE1653670A1 (en) * 1967-01-20 1971-08-19 Bosch Gmbh Robert Radial pump with self-adjusting hydraulic force compensation
DE2800427A1 (en) * 1978-01-05 1979-07-12 Lederle Pumpen & Maschf Pump for explosive chemical fluids - has ejector inside vessel to be emptied with squirrel-cage motor
DE3243617A1 (en) * 1982-11-25 1984-05-30 Hermetic-Pumpen Gmbh, 7803 Gundelfingen Pump for conveying highly corrosive media

Also Published As

Publication number Publication date
ES1019424Y (en) 1992-10-16
DE69213175T2 (en) 1997-04-17
DE69213175D1 (en) 1996-10-02
EP0544610A1 (en) 1993-06-02
ES1019424U (en) 1992-03-16

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