EP3356621B1 - Schwimmbeckenreinigungsvorrichtung mit mitteln zum einstellen des drucks im inneren der vorrichtung - Google Patents

Schwimmbeckenreinigungsvorrichtung mit mitteln zum einstellen des drucks im inneren der vorrichtung Download PDF

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Publication number
EP3356621B1
EP3356621B1 EP16785236.7A EP16785236A EP3356621B1 EP 3356621 B1 EP3356621 B1 EP 3356621B1 EP 16785236 A EP16785236 A EP 16785236A EP 3356621 B1 EP3356621 B1 EP 3356621B1
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EP
European Patent Office
Prior art keywords
valve
cleaning apparatus
swimming pool
pool cleaning
hydraulic circuit
Prior art date
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Application number
EP16785236.7A
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English (en)
French (fr)
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EP3356621A1 (de
Inventor
Philippe BLANC TAILLEUR
Louis FAVIE
Philippe Pichon
Thierry Michelon
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.)
Zodiac Pool Care Europe SAS
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Zodiac Pool Care Europe SAS
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Publication of EP3356621A1 publication Critical patent/EP3356621A1/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • B08B3/14—Removing waste, e.g. labels, from cleaning liquid; Regenerating cleaning liquids

Definitions

  • the present invention relates to the field of swimming pool equipment. It relates more particularly to an autonomous pool cleaner robot type.
  • the invention relates to a device for cleaning a surface immersed in a liquid, such as a surface formed by the walls of a pool, in particular a swimming pool.
  • a mobile pool cleaning robot Such a cleaning robot carries out said cleaning by traversing the bottom and walls of the pool of the pool, brushing these walls, and sucking the debris to a filter.
  • Debris means all the particles present in the basin, such as pieces of leaves, microalgae, etc., these debris being normally deposited at the bottom of the basin or glued on the side walls thereof.
  • the robot is powered by an electrical cable connecting the robot to an outdoor control unit and power supply.
  • the patent is known FR 2 929 311 , of the Applicant, which is directed to a submerged surface cleaner with pump pressure regulation, according to the preamble of claim 1.
  • Such devices comprise a body, drive members of said body on the immersed surface, a chamber filtering device arranged within the body and comprising a liquid inlet, a liquid outlet, a hydraulic circuit for liquid circulation between the inlet and the outlet through a filtering device.
  • the filtering device is removable to allow emptying of leaves and other debris without having to return the cleaning apparatus.
  • These devices have automatic programs for cleaning the bottom of the basin and possibly the side walls of the basin.
  • Such a program determines a cleaning of the pool in a predetermined time, for example an hour and a half.
  • the robot is removed from the water by the user at the end of the cycle or at regular intervals, when the filter is too full of particles (leaves, microparticles etc.), to be cleaned.
  • the robot's external control and power unit emits a light signal when this filter cleaning operation is to be performed.
  • Some of these cleaning robots are suitable for also cleaning the vertical walls of the pool. It has been found that, frequently, these robots have difficulties to climb along these walls when their filter is loaded with cleaning debris. This difficulty to climb the walls is then detrimental to a good cleaning of the pool.
  • the object of the invention is to overcome this drawback.
  • pool cleaning apparatus is intended to mean an apparatus for cleaning a submerged surface, that is to say typically a device, mobile within or at the bottom of a swimming pool, and adapted to carry out the filtration. Debris deposited as long as the bottom only on a wall. Such an apparatus is commonly known as a pool cleaning robot, when it comprises means of automated management of movements at the bottom and on the walls of the pool to cover the entire surface to be cleaned.
  • open position and "closed position”, respectively, in the present text means that the valve occupies a position in which it opens and closes at least one secondary liquid inlet.
  • the means for adjusting the pressure comprise means for driving the valve from an open position to a closed position, said valve driving means comprising a return spring, whose force is predetermined.
  • the pressure setting means is operative when the apparatus is tilted at a value greater than a value. predetermined.
  • the aim here is to obtain a flow rate that is constant or greater than the minimum flow rate necessary for the robot to climb along a vertical wall.
  • a minimum pump flow is necessary to ensure proper plating of the robot on the wall, and thus allow its wheels to drive along the wall.
  • This pump flow is reflected directly by the pressure difference between the area upstream of the pump but downstream of the filter, and the outside of the robot body.
  • Low flow means that the pump draws little water and thus creates a low vacuum in the robot body.
  • a high flow rate of the pump means that the pump sucks a lot and creates a strong depression in the robot's body.
  • Knowing the pressure prevailing in the area upstream of the pump but downstream of the filter is sufficient to determine the flow rate of the pump, which is an important control variable here.
  • the pressure adjustment means are active when the filter of the apparatus has a clogging greater than a predetermined threshold.
  • the return spring has sufficient stiffness to keep the valve closed, despite the vertical force of opening of the valve connected to the vacuum prevailing upstream of the circulation pump.
  • the cleaning apparatus comprises, in a particular embodiment, means for detecting complete opening of the valve, and means of communication. a need to clean the filter to a user of the device.
  • the invention also relates to a method for controlling a pool cleaning device as described, the method comprising a step of controlling the valve so as to maintain the pressure measured in the hydraulic circuit upstream of the circulation pump, equal to a previously chosen value.
  • the invention also relates to an immersed surface cleaning apparatus characterized in combination by all or some of the features mentioned in the claims.
  • the invention finds its place in a swimming pool technical environment, for example a family-type buried pool.
  • a submerged surface cleaning system comprises, in the present embodiment, a cleaning apparatus 10 , hereinafter referred to as a pool cleaning robot, and a feeding and control unit of said pool cleaning robot (not shown on the figures).
  • this power supply and control unit can be integrated into the cleaning apparatus.
  • the cleaning apparatus 10 is shown according to an embodiment given here by way of example, in figures 1 and 2 .
  • the type of device is here water ejection inclined towards the rear of the device, relative to the running plane of the robot.
  • the pool cleaning apparatus comprises a body 11 and drive and guide members 12 of the body 11 on a submerged surface.
  • these driving and guiding members 12 comprise wheels arranged laterally to the body (see FIG. figure 1 ).
  • the drive and guide members define a guide plane on a surface immersed by their points of contact with said immersed surface.
  • Said guide plane is generally substantially tangential to the immersed surface at point where the device is located.
  • Said guide plane is for example substantially horizontal when the device moves on a submerged surface of the pool bottom.
  • the pool cleaning apparatus further comprises a motor driving said driving and guiding members, said motor being, in the present example, supplied with energy by the control and control unit via a sealed flexible cable.
  • the pool cleaner has at least one liquid inlet 13 and one liquid outlet 14.
  • the liquid inlet 13 is located at the base of the body (in other words, below it), it is ie immediately facing a submerged surface on which the device moves in order to suck debris accumulated on said immersed surface.
  • the liquid outlet 14 is located here on the hood at the rear of the apparatus.
  • the liquid outlet is in a direction towards the rear of the apparatus.
  • This provision is not however limiting, and a water outlet substantially perpendicular to the guide plane, that is to say vertically if the cleaning device rests on the bottom of the pool, is also possible.
  • the apparatus comprises a hydraulic circuit connecting the liquid inlet 13 to the liquid outlet 14.
  • the hydraulic circuit is adapted to be able to ensure a circulation of liquid from the liquid inlet 13 to the liquid outlet 14.
  • the apparatus comprises for this purpose a circulation pump comprising an electric motor 15 and a propeller 16 (see figure 2 ), said electric motor 15 driving the propeller 16 in rotation, said propeller 16 being disposed in the hydraulic circuit.
  • the apparatus comprises a filtration chamber 17 interposed on the hydraulic circuit between the liquid inlet 13 and the liquid outlet 14.
  • the filtration chamber is in particular supplied with liquid via at least one upstream channel 18 connecting the liquid inlet 13 to the filtration chamber 17.
  • the filtration chamber 17 comprises a filtration basket 20.
  • This filter basket 20 is advantageously but not necessarily removable.
  • the swimming pool cleaning apparatus further comprises, in addition to the liquid inlet 13 already mentioned, at least one secondary liquid inlet 21 (see FIG. figure 3 ).
  • This liquid inlet secondary 21 is provided with a valve 22.
  • the secondary liquid inlet 21 is here placed at the upper surface of the body 11 of the cleaning robot 10, which reduces the density of debris floating in the pool in front of said secondary inlet 21, in comparison in particular with the liquid inlet 13 located on the underside of the same robot.
  • This secondary inlet 21 may however, alternatively, be placed on another face of this cleaning robot.
  • This secondary liquid inlet 21 is also connected to the hydraulic circuit, upstream of the circulation pump. In this way, it is possible to introduce more or less water into the circulation pump through the secondary inlet 21.
  • the valve 22 preferentially forms a continuity of shape with the outer surface of the body 11 of the cleaning robot 10, when in the closed position. It is here of substantially flat shape.
  • valve 22 is articulated in rotation about an axis of rotation 23.
  • a return spring 24 tends to bring the valve 22 in the closed position (pressed against the secondary liquid inlet 21 formed in the body 11 of the robot).
  • this return spring 24 is arranged perpendicularly to the secondary liquid inlet 21 to be closed, and comes to bear on the valve between the secondary liquid inlet 21 and the axis of rotation 23.
  • valve is finally secured to a float 26 , disposed here at the end of the valve opposite to the axis of rotation 23.
  • dA between the axis of rotation 23 and the point of support of the return spring 24 (see figure 4 ).
  • dB is the distance between the axis of rotation 23 and the center of the secondary liquid inlet 21. This center is here defined as the center of gravity of the shape of the liquid inlet.
  • dC is the distance between the axis of rotation 23 and the thrust center of the float 26, this distance being measured perpendicular to the vertical (see figure 4 and 10 for example).
  • This center of thrust is here defined as the center of gravity of the shape of said float 26.
  • F A is noted the restoring force exerted by the return spring 24 on the valve towards its closed position. Thrust exerted by the secondary input of force is noted F B liquid 21 of the valve towards its opening position when a vacuum prevails inside the filter chamber 17, under the action of the pump 16. F C is the thrust force exerted by the float 26 on the valve in a vertical direction, under the action of Archimedes force.
  • the valve 22 can thus be opened or closed according to the combination of the moments of the forces F A , F B , F C exerted around the axis of rotation 23.
  • the filter 20 when the robot is put into operation, the filter 20 is initially free of debris, the pressure in the hydraulic circuit upstream of the circulation pump 16 takes a first value related to the suction created by said circulation pump, and the situation is that illustrated by the figure 5 . As seen in this figure, the valve 22 remains closed. The resultant of the moments exerted on the valve 22 is written: F A x dA + F C x dC1 ⁇ F B1 x dB.
  • the filter 20 of this device is gradually filled with debris floating in the pool water or deposited on the bottom thereof.
  • the force F B1 increases and takes a value F B2 .
  • the situation is then illustrated by the figure 6 .
  • the valve 22 also remains closed.
  • the return spring 24 is indeed calibrated here to have sufficient stiffness to keep the valve 22 closed, despite the vertical force F B2 related to the depression prevailing upstream of the circulation pump 16.
  • F A x dA + F C x dC1 ⁇ F B2 x dB The lever arm F C x dC1 exerted by the float 26 is here to assist the lever arm F A x dA, exerted by the force F A generated by the spring, to maintain the valve 22 closed.
  • the circulation of water is then reduced in the circulation pump 17 due to the partial clogging of the filter.
  • FIG 7 Similarly illustrates the operation of the robot, when it climbs along a vertical wall, typically a side wall of the pool, in the case where the filter is not yet loaded with debris.
  • a vertical wall typically a side wall of the pool
  • the pressure upstream of the circulation pump 16 is normal and the pool water enters the hydraulic circuit only through the liquid inlet 13.
  • figure 8 then details the situation at the valve 22. In this situation, the force exerted by the float 26 is directed according to the local vertical, that is to say perpendicular to the other two forces.
  • the lever arm F C x dC2 exerted by this float 26 is significantly reduced compared to the case of a horizontal operation of the robot (the distance dC2 being substantially less than the distance dC1), and is of opposite direction, which means that it comes here to support the lever arm F B1 x dB exerted by the force F B1 generated by the depression in the body of the robot, and thus tends to facilitate the opening of said valve 22.
  • the return spring 24 is however tared so that in this situation, the valve remains closed.
  • the lever arm exerted by the float 26 then increases, as the horizontal distance between the axis of rotation 23 and the thrust center of the float dC2 increases and takes a dC3 value.
  • the float 26 amplifies the opening of the valve 22, water enters the hydraulic circuit and thus reduces the negative pressure in said circuit upstream of the circulation pump 16.
  • the valve 22 then takes a partially open equilibrium position, in which the lever arm generated by the force exerted by the water pressure is counterbalanced by the lever arms of the return spring 24 and the float 26.
  • valve 22 comes to a fully open position.
  • a visual display is triggered on the power and control unit to warn the user of an imminent need to clean the filter.
  • the device does not include a float 26, and the valve 22 opens when the filter 20 is clogged, regardless of the vertical or horizontal attitude of the body 11 of the cleaning robot 10.
  • valve 22 comprises means automatic opening according to a predetermined threshold of depression in the hydraulic circuit between the filtration chamber 17 and the circulation pump 16. This threshold typically corresponds to a level of fouling of the predetermined filter 20.
  • the cleaning apparatus 10 further comprises means for measuring the liquid pressure in the hydraulic circuit upstream of the circulation pump.
  • These measuring means are of a nature known per se to those skilled in the art. They include, for example, means for measuring the electric current at the terminals of the circulation pump 16.
  • the cleaning apparatus advantageously then comprises means for controlling the opening of the valve 22 according to measurements of the pressure in the hydraulic circuit.
  • the open or closed position of the valve 22 may advantageously be controlled remotely, for example by means of the power supply and control unit.
  • the position of the valve 22 may optionally be adjusted to any position between a fully open position and a fully closed position.
  • control method of the pool cleaning apparatus comprises a step 100 of recurrent acquisition of pressure measurements in the hydraulic circuit upstream of the circulation pump, and a step 110 of modifying the opening of the valve 22 as a function of this pressure measurement, for example to maintain the constant pressure to a constant value previously chosen.
  • the cleaning apparatus 10 also comprises means for detecting the attitude of said apparatus, in particular for detecting its angular position with respect to a horizontal plane.
  • these means are known per se. It may be for example an accelerometer or a gyroscope.
  • the method also comprises a repetitive step 120 for monitoring that the cleaning robot is going through a vertical wall, thanks to the attitude detection means, and a step 130 for opening the valve. 22 in this case, to facilitate the rise of the cleaning robot 10 along the wall, and maintain the constant suction pressure in the hydraulic circuit, even if the filter 20 begins to be fouled.
  • the device comprises only a float 26 and is not provided with a return spring.
  • the float 26 is arranged and dimensioned so that it closes the valve 22 when the filter 20 is not clogged, and let water through the secondary inlet of liquid 21 when the filter 20 is clogged beyond a certain threshold, or when the robot 10 is oriented vertically.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Filtration Of Liquid (AREA)

Claims (7)

  1. Schwimmbeckenreinigungsvorrichtung, umfassend:
    - einen Körper (11),
    - mindestens einen Hydraulikkreis zum Umwälzen von Flüssigkeit zwischen mindestens einem Flüssigkeitseinlass (13) und mindestens einem Flüssigkeitsauslass (14) und durch eine Filtereinrichtung (17) der Reinigungsvorrichtung hindurch,
    - eine Fluidumwälzpumpe (16), die im Hydraulikkreis stromabwärts der Filtereinrichtung (17) installiert ist, dadurch gekennzeichnet, dass die Schwimmbeckenreinigungsvorrichtung umfasst:
    - Mittel zum Regeln des Drucks, der im Hydraulikkreis stromaufwärts der Umwälzpumpe herrscht, in Antwort auf eine erkannte Veränderung dieses Drucks, wobei die Mittel zum Regeln des Drucks umfassen:
    - mindestens einen sekundären Flüssigkeitseinlass (21), der mit dem Hydraulikkreis verbunden ist, stromaufwärts der Umwälzpumpe (16), wobei der mindestens eine sekundäre Flüssigkeitseinlass (21) mit einer Klappe (22), die um eine Drehachse (23) drehbeweglich montiert ist, und mit Mitteln zum Antreiben der Klappe von einer offenen Stellung zu einer geschlossenen Stellung ausgestattet ist, wobei die Antriebsmittel der Klappe einen Schwimmer (26) umfassen, dessen Ausrichtung und/oder dessen Kraft von der Ausrichtung der Reinigungsvorrichtung (10) relativ zu einer horizontalen Ebene abhängig ist.
  2. Schwimmbeckenreinigungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Antriebsmittel der Klappe eine Rückstellfeder (24) umfassen, deren Kraft vorbestimmt ist.
  3. Schwimmbeckenreinigungsvorrichtung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die Mittel zum Regeln des Drucks aktiv sind, wenn die Vorrichtung einer Neigung ausgesetzt ist, die größer ist als ein vorbestimmter Wert.
  4. Schwimmbeckenreinigungsvorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Mittel zum Regeln des Drucks aktiv sind, wenn der Filter der Vorrichtung eine Verstopfung aufweist, die größer ist als eine vorbestimmte Schwelle.
  5. Schwimmbeckenreinigungsvorrichtung nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass die Rückstellfeder (24) eine Steifigkeit aufweist, die ausreichend ist, um die Klappe (22) trotz der vertikalen Öffnungskraft der Klappe (22), die mit dem stromaufwärts der Umwälzpumpe (16) herrschenden Unterdruck verbunden ist, geschlossen zu halten.
  6. Schwimmbeckenreinigungsvorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass sie Mittel zum Erkennen einer vollständigen Öffnung der Klappe, und Mittel zum Kommunizieren eines Reinigungsbedarfs des Filters (20) an einen Benutzer der Vorrichtung umfasst.
  7. Verfahren zum Ansteuern einer Schwimmbeckenreinigungsvorrichtung, wobei die Vorrichtung Anspruch 1 entspricht, dadurch gekennzeichnet, dass das Verfahren einen Schritt des Ansteuerns der Klappe (22) so umfasst, dass der im Hydraulikkreis stromaufwärts der Umwälzpumpe gemessene Druck gleich einem zuvor gewählten Wert gehalten wird.
EP16785236.7A 2015-10-02 2016-09-28 Schwimmbeckenreinigungsvorrichtung mit mitteln zum einstellen des drucks im inneren der vorrichtung Active EP3356621B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1559372A FR3041981B1 (fr) 2015-10-02 2015-10-02 Appareil nettoyeur de piscine comprenant des moyens de reglage de la pression interne audit appareil
PCT/FR2016/052460 WO2017055740A1 (fr) 2015-10-02 2016-09-28 Appareil nettoyeur de piscine comprenant des moyens de réglage de la pression interne audit appareil

Publications (2)

Publication Number Publication Date
EP3356621A1 EP3356621A1 (de) 2018-08-08
EP3356621B1 true EP3356621B1 (de) 2019-11-06

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EP16785236.7A Active EP3356621B1 (de) 2015-10-02 2016-09-28 Schwimmbeckenreinigungsvorrichtung mit mitteln zum einstellen des drucks im inneren der vorrichtung

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US (2) US10597887B2 (de)
EP (1) EP3356621B1 (de)
AU (1) AU2016333560B2 (de)
ES (1) ES2758680T3 (de)
FR (1) FR3041981B1 (de)
WO (1) WO2017055740A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3041981B1 (fr) 2015-10-02 2017-12-22 Zodiac Pool Care Europe Appareil nettoyeur de piscine comprenant des moyens de reglage de la pression interne audit appareil
EP3658722B1 (de) * 2017-07-27 2021-09-01 Zodiac Pool Care Europe Automatische schwimmbeckenreiniger mit filterladeindikatoren
US20220112735A1 (en) * 2020-10-13 2022-04-14 Zodiac Pool Care Europe Automatic swimming pool cleaners with bypass mechanisms

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6412133B1 (en) * 1999-01-25 2002-07-02 Aqua Products, Inc. Water jet reversing propulsion and directional controls for automated swimming pool cleaners
FR2929311A1 (fr) * 2008-03-27 2009-10-02 Zodiac Pool Care Europ Soc Par Appareil roulant nettoyeur de surface immergee a entrainement mixte hydraulique et electrique et procede correspondant
CN203640340U (zh) * 2013-12-16 2014-06-11 浙江金华威邦塑胶有限公司 一种泳池用自动清洁器
FR3041981B1 (fr) 2015-10-02 2017-12-22 Zodiac Pool Care Europe Appareil nettoyeur de piscine comprenant des moyens de reglage de la pression interne audit appareil

Non-Patent Citations (1)

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Publication number Publication date
FR3041981A1 (fr) 2017-04-07
US20200165832A1 (en) 2020-05-28
AU2016333560A1 (en) 2018-05-10
EP3356621A1 (de) 2018-08-08
ES2758680T3 (es) 2020-05-06
AU2016333560B2 (en) 2021-05-20
US11505959B2 (en) 2022-11-22
US10597887B2 (en) 2020-03-24
FR3041981B1 (fr) 2017-12-22
US20180283029A1 (en) 2018-10-04
WO2017055740A1 (fr) 2017-04-06

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