EP0169589B1 - Automatisches Reinigungsgerät einer versenkten Fläche - Google Patents

Automatisches Reinigungsgerät einer versenkten Fläche Download PDF

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Publication number
EP0169589B1
EP0169589B1 EP85200932A EP85200932A EP0169589B1 EP 0169589 B1 EP0169589 B1 EP 0169589B1 EP 85200932 A EP85200932 A EP 85200932A EP 85200932 A EP85200932 A EP 85200932A EP 0169589 B1 EP0169589 B1 EP 0169589B1
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EP
European Patent Office
Prior art keywords
cleaning apparatus
electric
finger
pump
motor
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Expired - Lifetime
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EP85200932A
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English (en)
French (fr)
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EP0169589A1 (de
Inventor
Frédéric Puech
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Individual
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Individual
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Priority to AT85200932T priority Critical patent/ATE52563T1/de
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    • 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
    • E04H4/14—Parts, details or accessories not otherwise provided for
    • E04H4/16—Parts, details or accessories not otherwise provided for specially adapted for cleaning
    • E04H4/1654—Self-propelled cleaners

Definitions

  • the invention relates to an apparatus for automatically cleaning a surface immersed in a liquid, in particular the walls and bottom of a swimming pool. It relates to a device of the type comprising an electric motor for driving the device along the submerged surface and a filtration chamber associated with an electric pump integrated in the device to generate a circulation of liquid in said filtration chamber.
  • Such an apparatus has several qualities, in particular that of having its own filter which can be removed and cleaned easily (which avoids clogging the filter of the technical installation of the swimming pool).
  • the random reversals of the direction of progression of the device were unable to allow a complete scan of the submerged surface.
  • the device tends to remain at the level of the water line or to stop in angles and its effectiveness is significantly affected; on the contrary, during sequences where this duration between two inversions is reduced, the device does not make complete runs of the length or width of the pool and tends to remain at the bottom of it in a limited area.
  • the random program can, if necessary, be designed to reduce the influence of the above-mentioned faults in the case of a pool of given dimensions and shape, but the device is then ill-suited to other types. swimming pools, for which these defects persist and can even be accentuated.
  • a generator of chance is a relatively expensive organ which increases the cost price of the device.
  • the present invention proposes to remedy the above-mentioned faults of cleaning devices of the type mentioned above comprising an electric drive motor and an on-board electric pump.
  • An object of the invention is in particular to provide an improved cleaning device which is capable of sweeping, almost uniformly and over all their surfaces, the walls and the bottom of a swimming pool in order to ensure complete cleaning of this one.
  • Another objective of the invention is to allow the user to make adjustments as a function of the swimming pool aimed at in order to obtain the desired optimum cleaning; the invention aims in particular to provide an apparatus giving great flexibility, either to be adapted to the dimensions of a swimming pool with a view to ensuring uniform cleaning thereof, or to be temporarily specialized for carrying out cleaning according to need (cleaning of the water line or cleaning the bottom of the pit).
  • Another objective is to authorize, if necessary, precise and easy control of the trajectory followed by the aircraft.
  • Another objective of the invention is to eliminate the need to provide a random generator, in order to reduce the cost of the electronic circuits equipping the device.
  • the automatic cleaning apparatus targeted by the invention comprises a hollow body, members for driving said body on the surface to be cleaned, a reversible electric motor arranged in the body to transmit a rotational movement to said members. drive, means for supplying power to said motor comprising means for sequential reversal of the direction of the electric current, a filtration chamber situated inside the body, a liquid inlet to the filtration chamber situated at the base of the body, a pump driven by an electric motor to cause the liquid to circulate in the filtration chamber, and an outlet for the liquid discharged by the pump, arranged opposite the base of the body;
  • the electric motor of the pump is associated with electrical supply means comprising sequential interruption means, capable of generating cuts of said electrical supply at predetermined or random frequency for predetermined or random cut-off times.
  • the abovementioned sequential interrupting means are adjustable delay means adapted to generate a predetermined cutoff frequency, in particular in a range from 10 to 360 cuts / hour, and a predetermined duration for each cutoff, included in especially in a range from 1 to 60 seconds.
  • the reversing means of the drive motor are preferably adapted to generate a predetermined reversing frequency of said motor, adjustable in particular between 5 and 360 reversals / hour.
  • the device comprises at least one movable finger arranged on one side of the body in order to be able to present two positions, a passive position where said finger is set back relative to the plane of contact of the organs drive with the 'submerged surface, and an active position where said finger comes to or exceeds this plane, said finger being associated with remote control means adapted to cause its displacement from a position towards the other.
  • two movable fingers will be arranged symmetrically with respect to the longitudinal axial plane of the body; these independently controlled fingers allow the user to rotate the device in one direction or the other, acting, when they come in the active position, as a pivoting and braking member around which the device rotates naturally through the effect of its training.
  • the device shown by way of example in the figures is composed of two parts, one 1 immersed, constituting the device itself ( Figures 1, 2, 3) the other formed by means of power supply to said device which are housed in a box 3 located outside the liquid at the edge of the swimming pool ( Figures 4, 5 and 6).
  • the device 1 and its supply means are connected by sheathed electrical conductors which form a waterproof cable which can be seen in 4 in Figures 1 and 6; the cable 4 has an appropriate length to allow the device 1 to access all the areas of the immersed surface of the pool.
  • the apparatus 1 (FIGS. 1, 2, and 3) consists of a body 5 open at its base, the latter being equipped with a closure plate 6 provided with inlets 6a for sucking the liquid in the vicinity of the surface to be cleaned; these inlets are preferably provided with valves preventing the exit of impurities or residues, when the device is no longer under suction.
  • the body 5 is provided at its upper part with a discharge outlet 7, located opposite the base of said body so as to discharge the liquid in a direction orthogonal thereto.
  • the body 5 is internally equipped with a sealed casing 8 which is housed therein along its transverse axis as shown in the figures.
  • This casing includes externally, on its transverse walls and under its bottom, ribs such as 9.
  • the body 5 forms around the casing 8 a filtration chamber 5a equipped with a flexible filtration pocket 10 which is fixed to the base of the body around the periphery of the plate 6.
  • This pocket is formed by a membrane of a flexible mesh material or knitted of a type known per se; under the effect of the suction it rests against the ribs 9 of the casing 8 which keep it at a distance from the latter, so that the filtration takes place through almost the entire surface of the pocket 10 .
  • the casing 8 contains, on the one hand, an electric pump motor 11 disposed in a central zone thereof, on the other hand, a reversible drive motor 12 disposed in the eccentric position transversely with respect to this zone central.
  • the pump motor 11 drives a propeller or axial impeller 14 through a shaft 13, which is disposed in a sleeve 15 for guiding the flow, inserted in the outlet 7.
  • the drive motor 12 drives through a shaft 16 a transmission wheel 17 which is connected by rubberized belts 18 to two wheels such as 19, arranged at the two longitudinal ends of the body. Each of these wheels drives a transverse cylindrical roller 20 covered by a flexible sleeve of cellular polyurethane foam 21.
  • the two sleeves 21 are arranged to come into contact with the immersed surface and fulfill the double function of generating a progression of the device in one direction or the other depending on the direction of rotation of the motor 12, and to ensure brushing of the surface tending to take off the impurities or deposits thereof, which are then sucked into the filtration chamber 5a.
  • the windings of the pump motor 11 and those of the drive motor 12 are supplied with low voltage (in particular 12 or 24 volts) by two pairs of sheathed conductors grouped in the waterproof cable 4 already mentioned.
  • a float 22 formed by a hollow cylinder is articulated above the body 5 on the sides of the latter in a transverse plane.
  • This float which can contain a mobile weight such as a lead ball, cooperates with the off-center of the motor 12 to unbalance the device when it is at the level of the water line; it thus conditions a lateral movement of the device along this line.
  • the float 22 is also used to grip the device during handling.
  • the body 5 carries on either side two electromagnets 23 and 24 which are fixed externally in the vicinity of the base thereof; these electromagnets are arranged in the transverse plane of symmetry so that that is located on the side of the transmission means (17, 18, 19), is housed below the transmission wheel 17.
  • Flanges such as 25 are fixed on either side of the body to protect these electromagnets and the transmission means.
  • Each electromagnet 23 or 24, the winding of which is sealed in a block of resin, is provided with a magnetic core which is in the form of a vertical direction finger 26 provided at the top with an enlarged head 26a and in the lower part of a non-slip heel 26b; a spring 27 urges the finger 26 upwards and, in the absence of excitation, maintains it in a passive high position, in which its heel 26b is located set back relative to the plane passing through the low generatrices of the sleeves 21 (contact plane with the submerged surface).
  • Each electromagnet is arranged so that, when its winding is excited, the finger undergoes a downward movement which brings it into an active low position in which its lower heel 26b is located projecting from the contact plane cited above. Thus, in this position, the device pivots around the finger and the user can cause said device to veer from a precise angle determined by adjusting the excitation time of the electromagnet considered.
  • the windings of the electromagnets 23 and 24 are electrically supplied with low voltage by four sheathed conductors which are either integrated into the cable 4 (device originally comprising said electromagnets), or assembled in another cable attached to the first by conventional attachment means (optional guide, added later).
  • FIG. 4 is a block diagram of the electrical connections of the device. This figure shows at 28 the two conductors through which the pump motor 11 is supplied, at 29 the two conductors through which the drive motor 12 is supplied, at 30 the two conductors through which the electromagnet 23 is excited and at 31 the two conductors by which the electromagnet 24 is excited.
  • the conductors 28 and 29 which supply the pump motor 11 and the drive motor 12 are connected to a power supply unit 33 which receives the low voltage and an example of which will be described later with reference to FIG. 5.
  • the conductors 30 and 31 of excitation of the electromagnets are connected to the low voltage through, on the one hand, a voltage adapter 34 of conventional type, on the other hand, a mobile control box 35 that the user can take in hand to guide the device by appropriately exciting said electromagnets.
  • This control unit 35 is connected to the box 3 by a cable 36 which, in addition to the excitation control conductors, contains conductors for manual reversal of the direction of the drive motor 12; these conductors are connected to the power supply 33 and, as will be seen below, the action of the manual inversion button of the housing 35 is validated when the block 33 is placed in the state corresponding to manual operation.
  • the supply circuit attached to the pump motor 11 comprises two comparators 41 and 42 which receive, on the one hand, different reference voltages generated by a voltage divider 43, on the other hand, the adjustable voltages from the potentiometers 38 and 39. These potentiometers allow the charging and discharging of a polarized capacitance 44 and are themselves polarized by diodes 45.
  • the negative voltage from the potentiometer 39 and from the discharge of the capacitor 44 is compared in the comparator 42 to the reference voltage and causes a flip-flop 46 toggled when it reaches this reference voltage.
  • the capacitor 44 is recharged through the potentiometer 38; when the charging voltage becomes equal to the reference voltage of the comparator 41, the rocker is again switched and delivers a signal causing the pump motor 11 to stop and the cycle can be repeated.
  • the signal is divided by 2 in a divider 52 and is sent with the initial signal in logic gates 53 and 54 which operate alternately, with a delay time between two opposite alternations.
  • these alternations generate positive or negative power for the motor 12.
  • the resistor 50 can be adjusted according to the parameters of the other components so that the successive edges of two successive opposite half-waves are offset by a time of the order of 3 "; this delay allows the motor to stop naturally at each inversion and start again in the opposite direction without risk of deterioration.
  • the potentiometer 40 can be chosen as a function of the parameters of the other components to obtain a range of adjustment of the inversion frequency of between 5 and 360 inversions / hours.
  • the device When the pump motor 11 is switched off, the device is no longer applied against the submerged surface by reaction of the outgoing flow through the outlet 7; if it is on a flat surface (bottom of swimming pool), the slightest external action modifies its trajectory and in particular the slight traction of cable 4 causes it to deviate (this cut with deviation of trajectory is shown diagrammatically in P, at the figure 7). If, on the contrary, the device is on a vertical or very inclined surface (pool walls), it slides along it until it comes into contact with the bottom (point P 2 in Figure 7).
  • the pump cut-off time is longer in the case of a large pool, to give the device time to slide completely along the vertical walls if it is at the water line (this pool being assumed to be deeper than the small pool).
  • the setting of the cut-off time determines the amplitude of the angular deviation carried out at each cut.
  • the inversion frequency is expected to be low enough so that the device has time to cover the greatest length without retracing its steps.
  • the pump cut-off frequency is expected to be higher so that the device slides along the vertical walls shortly after reaching the water line. If the device traverses the pool in the direction of the length, an intermediate cut (P i ) causes a deviation of its trajectory.
  • P i is the symbol of a cut of the pump and I that of a reversal of the direction of progression).
  • FIG. 8 the trajectory of an apparatus adjusted to clean the bottom of a swimming pool pit.
  • the inversions are adjusted at a frequency such that the path of the device between two inversions is of the order of the length of the pit.
  • the pump cutoff frequency is set to a higher value so as to cause deviations from frequent trajectories; in addition, the duration of the cuts is also expected to be of a higher value in order to generate greater deviations.
  • Figure 9 illustrates the opposite case where the user wishes to clean more particularly the vertical walls and the water line.
  • the inversion frequency is provided at a very low value (5 to 10 / hour), the inversion being essentially intended to avoid any possible jamming of the device in a corner.
  • the cut-off frequency of the pump is on the contrary adjusted to a much higher value depending on the height of the vertical walls to be cleaned, in order to lead to a trajectory of the type of that of FIG. 9. After the device has fallen, -this goes up along the wall, arrives at the water line, moves transversely under the effect of the imbalance already mentioned, until a new cut of pump makes it fall.

Claims (12)

1. Automatisches Reinigungsgerät einer in einer Flüssigkeit versenkten Fläche, umfassend einen Hohlkörper (5), Vorrichtungen für den Antrieb des besagten Körpers auf der zu reinigenden Oberfläche (21 einen umsteuerbaren Elektromotor (12), der innerhalb des Körpers vorgesehen ist, um den besagten Antriebsvorrichtungen eine drehende Bewegung zu vermitteln, Mittel zur Speisung des besagten Motors mit elektrischem Strom, die Mittel für sequentielle Umsteuerung der Richtung des elektrischen Stroms umfassen, eine Filtrationskammer (5a) im Inneren des Körpers, einen in die Filtrationskammer führenden Flüssigkeitseingang (6a) unten am Körper, eine durch einen Elektromotor (11) angetriebene Pumpe (14), um die Flüssigkeit zum Umlauf innerhalb der Filtrationskammer zu veranlassen, sowie einen Ausgang (7) für die durch die Pumpe geförderte Flüssigkeit, der gegenüber dem Körperboden angeordnet ist, wobei das besagte Reinigungsgerät dadurch gekennzeichnet ist, daß der elektrische Pumpenmotor (11) mit Mitteln zur Speisung mit elektrischem Strom (33) in Verbindung steht, mit Mitteln für sequentielle Unterbrechung, die so beschaffen sind, daß sie eine vorbestimmte oder Zufallsfrequenz der Ausschaltungen der besagten elektrischen Stromzufuhr erzeugen, und zwar während vorbestimmten oder zufallsbedingten Ausschaltzeiten.
2. Reinigungsgerät nach Anspruch 1, dadurch gekennzeichnet, daß die Mittel für sequentielle Unterbrechung so beschaffen sind, daß sie eine vorbestimmte Ausschaltfrequenz zwischen 10 und 360 Ausschaltungen/Stunde und eine vorbestimmte Dauer jeder Ausschaltung zwischen 1 und 60 Sekunden bewirken.
3. Reinigungsgerät nach Anspruch 2, dadurch gekennzeichnet, daß die Mittel für sequentielle Unterbrechung so geregelt werden können, daß sie die Einstellung der Ausschaltfrequenz und der Dauer jeder Ausschaltung innerhalb der besagten Spannen gestatten.
4. Reinigungsgerät nach einem der Ansprüche 1, 2 oder 3, dadurch gekennzeichnet, daß die Mittel für sequentielle Umsteuerung geregelt werden können und so beschaffen sind, daß sie eine zwischen 5 und 360 Umsteuerungen/Stunde einstellbare Umsteuerfrequenz des Antriebsmotors bewirken.
5. Reinigungsgerät nach einem der Ansprüche 1, 2, 3 oder 4, dadurch gekennzeichnet, daß es mindestens einen beweglichen Finger (26) umfaßt, der an einer Seite des Körpers so angeordnet ist, daß er zwei Lagen einnehmen kann, und zwar eine passive Lage, in der der besagte Finger im Verhältnis zu der Berührungsebene zwischen den Antriebsvorrichtungen und der versenkten Fläche zurückgezogen ist, und eine aktive Lage, in der der besagte Finger das Niveau dieser Ebene erreicht oder überschreitet, wobei der besagte Finger mit Fernsteuermitteln (23, 24, 35) in Verbindung steht, die so beschaffen sind, daß sie seine Verglagerung von der einen in die andere Lage bewirken.
6. Reinigungsgerät nach Anspruch 5, dadurch gekennzeichnet, daß es zwei bewegliche Finger (26) umfaßt, die im Verhältnis zu der axialen Längsebene des Körpers symmetrisch angeordnet sind, wobei jeder Finger mit Fernsteuermitteln (23, 24, 35) in Verbindung steht, die dessen Steuerung unabhängig von dem anderen Finger gestatten.
7. Reinigungsgerät nach einem der Ansprüche 5 oder 6, dadurch gekennzeichnet, daß die Fernsteuermittel jedes Fingers folgende Teile umfassen:
. Einen Elektromagneten (23, 24) mit einem durch den besagten Finger gebildeten Kern, der so geschaltet ist, daß er sich in seiner aktiven Lage befindet, wenn der besagte Elektromagnet erregt ist,
. Mittel für die elektrische Erregung des besagten Elektromagneten,
. und Mittel (27) zum Rückzug des Fingers in seine passive Lage, wenn keine Erregung stattfindet.
8. Reinigungsgerät nach einem der Ansprüche 1, 2, 3, 4, 5, 6 oder 7, dadurch gekennzeichnet, daß der elektrische Antriebsmotor (12) und der Pumpenmotor (11) mit ihren Mitteln für elektrische Speisung (33) durch ein dichtes Kabel (4) bildende elektrische Leiter (28, 29) verbunden sind, wobei die Länge des besagten Kabels so beschaffen ist, daß sie die Anordnung der besagten Speisemittel mit ihren Mitteln für sequentielle Unterbrechung und ihren Mitteln für sequentielle Umsteuerung in einem außerhalb der Flüssigkeit befindlichen Gehäuse (3) gestattet.
9. Reinigungsgerät nach den Ansprüchen 7 und 8 gemeinsam, dadurch gekennzeichnet, daß der bzw. die Elektromagneten (23, 24) mit ihren Mitteln für elektrische Erregung (34, 35) durch an das besagte Kabel (4) angeschlossene ummantelte Leiter (30, 31) verbunden sind.
10. Reinigungsgerät nach einem der vorstehenden Ansprüche, umfassend einen an Körper (5) in einer Querebene gelenkig angebrachten Schwimmer (22), wobei Pumpenmotor (11) innerhalb des Körpers in einem mittigen Bereich des besagten Körpers angeordnet ist, während Antriebsmotor (12) in exzentrischer Lage im Verhältnis zu besagtem mittigem Bereich quer angeordnet ist.
11. Reinigungsgerät nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß es zwei Antriebsvorrichtungen umfaßt, die in zwei zylindrischen Querrollen (20) bestehen und an den beiden Enden des Körpers angeordnet sind, wobei jede davon mit einer flexiblen zelligen Hülle (21) verkleidet ist.
12. Reinigungsgerät nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß Pumpenmotor (11) und Antriebsmotor (12) in einem dichten Gehäuse (8) angeordnet sind, das an der Außenseite Rippen (9) aufweist, an denen ein innerhalb der Filtrationskammer (5a) befindlicher Filterbeutel (10) anliegt.
EP85200932A 1984-07-11 1985-06-13 Automatisches Reinigungsgerät einer versenkten Fläche Expired - Lifetime EP0169589B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85200932T ATE52563T1 (de) 1984-07-11 1985-06-13 Automatisches reinigungsgeraet einer versenkten flaeche.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8411609 1984-07-11
FR8411609A FR2567552B1 (fr) 1984-07-11 1984-07-11 Appareil de nettoyage automatique d'une surface immergee

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP88202702.2 Division-Into 1988-11-28

Publications (2)

Publication Number Publication Date
EP0169589A1 EP0169589A1 (de) 1986-01-29
EP0169589B1 true EP0169589B1 (de) 1990-05-09

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EP85200932A Expired - Lifetime EP0169589B1 (de) 1984-07-11 1985-06-13 Automatisches Reinigungsgerät einer versenkten Fläche

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EP (1) EP0169589B1 (de)
AT (1) ATE52563T1 (de)
DE (2) DE3577585D1 (de)
ES (1) ES287971Y (de)
FR (1) FR2567552B1 (de)

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Publication number Priority date Publication date Assignee Title
FR2729995B1 (fr) * 1995-02-01 1997-04-18 Sarl Vbv Dispositif nettoyeur de parois de bassins en eau et notamment de piscines
IT1316336B1 (it) * 2000-02-04 2003-04-10 Internat Caratti S R L Pulitore robotizzato per piscine
ES2314488T3 (es) * 2003-11-04 2009-03-16 Aqua Products Inc. Control direccional para limpiadores de piscinas robotizados de cipillo dual.
FR2864130B1 (fr) 2003-12-19 2006-12-29 Zodiac Pool Care Europe Procede de pilotage d'un appareil de nettoyage automatique d'une surface immergee dans un liquide, et appareil de nettoyage correspondant.
FR2864129B1 (fr) 2003-12-19 2006-12-29 Zodiac Pool Care Europe Procede de pilotage d'un appareil de nettoyage automatique d'une surface immergee dans un liquide, et appareil de nettoyage correspondant.
FR2925553B1 (fr) 2007-12-21 2010-03-12 Zodiac Pool Care Europe Appareil nettoyeur de surface immergee a helice de pompage inclinee
FR2925550B1 (fr) 2007-12-21 2012-10-19 Zodiac Pool Care Europe Appareil nettoyeur de surface immergee a filtration inclinee
FR2925549B1 (fr) 2007-12-21 2012-08-10 Zodiac Pool Care Europe Appareil nettoyeur de surface immergee a filtration turbulente
FR2925554B1 (fr) 2007-12-21 2010-03-12 Zodiac Pool Care Europe Appareil nettoyeur de surface immergee a moteur de pompage hors du circuit hydraulique
FR2929310B1 (fr) * 2008-03-27 2016-06-03 Zodiac Pool Care Europe Appareil nettoyeur de surface immergee a protuberance acceleratrice du flux d'entree
FR2954380B1 (fr) 2009-12-18 2015-03-20 Zodiac Pool Care Europe Appareil nettoyeur de surface immergee a giration par cabrage
FR2954379B1 (fr) 2009-12-18 2012-04-13 Zodiac Pool Care Europe Appareil nettoyeur de surface immergee a giration par au moins un organe roulant non moteur decale lateralement
FR2954377B1 (fr) 2009-12-18 2015-03-13 Zodiac Pool Care Europe Appareil nettoyeur de surface immergee a moteur electrique unique reversible d'entrainement et de pompage
FR2954378B1 (fr) 2009-12-18 2013-08-30 Zodiac Pool Care Europe Appareil nettoyeur de surface immergee a cabrage hydraulique
FR2961838B1 (fr) 2010-06-25 2012-07-27 Zodiac Pool Care Europe Appareil automobile nettoyeur de surface immergee
FR2981970B1 (fr) * 2011-10-27 2013-11-29 Zodiac Pool Care Europe Appareil nettoyeur de surface immergee a commande de retour semi-automatique
FR2990032B1 (fr) 2012-04-27 2014-06-06 Zodiac Pool Care Europe Procede et dispositif de modification d'un dispositif de nettoyage d'une surface immergee et dispositif de nettoyage associe
FR3019573B1 (fr) 2014-04-04 2016-03-25 Zodiac Pool Care Europe Robot nettoyeur de piscine a puissance de pompage reglable

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3422478A (en) * 1965-10-22 1969-01-21 Bodwell D Osborne Submersible automatic solid surface cleaner
FR1485955A (fr) * 1966-07-01 1967-06-23 Siemens Elektrogeraete Gmbh Circuit de renversement de marche, notamment pour machines à laver
CH638272A5 (de) * 1978-12-27 1983-09-15 Sommer Schenk Ag Geraet zur unterwasserreinigung.

Also Published As

Publication number Publication date
DE3585288D1 (de) 1992-03-05
EP0169589A1 (de) 1986-01-29
ES287971U (es) 1986-05-01
ES287971Y (es) 1987-06-16
DE3577585D1 (de) 1990-06-13
FR2567552B1 (fr) 1986-12-05
FR2567552A1 (fr) 1986-01-17
ATE52563T1 (de) 1990-05-15

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