EP2255049A2 - Appareil nettoyeur de surface immergée a protubérance accélératrice du flux d'entrée - Google Patents
Appareil nettoyeur de surface immergée a protubérance accélératrice du flux d'entréeInfo
- Publication number
- EP2255049A2 EP2255049A2 EP09730914A EP09730914A EP2255049A2 EP 2255049 A2 EP2255049 A2 EP 2255049A2 EP 09730914 A EP09730914 A EP 09730914A EP 09730914 A EP09730914 A EP 09730914A EP 2255049 A2 EP2255049 A2 EP 2255049A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- liquid
- liquid inlet
- accelerating
- protuberance
- hollow body
- 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.)
- Granted
Links
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- 238000001914 filtration Methods 0.000 claims description 43
- 238000005086 pumping Methods 0.000 claims description 30
- 238000005096 rolling process Methods 0.000 claims description 22
- 230000000694 effects Effects 0.000 claims description 20
- 238000004140 cleaning Methods 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 7
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- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
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- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
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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
- E04H4/14—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 a surface cleaner device immersed in a liquid, in particular a swimming pool.
- a surface cleaner device immersed in a liquid, in particular a swimming pool.
- Many types of submerged surface cleaners are already known.
- such an immersed surface cleaner comprises a hollow body and guide members on the immersed surface, with said hollow body having a base extending above and away from said immersed surface, at least a liquid inlet being provided at the base of said hollow body so as to collect a stream of liquid carrying debris to extract the liquid and the immersed surface.
- a liquid pumping device is provided (integrated in the hollow body of the apparatus or on the contrary at least partially disposed outside the apparatus and the basin containing the liquid) to generate a suction of liquid in each inlet of liquid, and this suction is adapted to be able to drive debris through the corresponding liquid inlet.
- the known submerged surface cleaners are in most cases equipped with a drive device that allows them to be automatically moved to the immersed surface.
- This displacement can be caused by specific motorized drive members (for example by one or more onboard drive motor (s)), or on the contrary be of the hydraulic type, that is to say ie to be caused at least in part by the hydraulic flow (suction or discharge) generated by the pumping device associated with the device, or be of mixed type.
- the problem arises of the effectiveness of the cleaning, related on the one hand to the ability of the device to take off the debris from the immersed surface and, on the other hand, to the quality of the suction of debris through each liquid inlet.
- each liquid inlet must be dimensioned to allow the passage of the largest debris.
- the greater the cross sectional area of each liquid inlet the higher the suction energy required for the operation of the device is also important, which costs its cost to manufacture and use.
- the object of the invention is to provide an immersed surface cleaning apparatus whose cleaning efficiency is considerably improved, and all else being equal, in particular without any modification of the pumping device or, if appropriate, the drive device associated with this device.
- the invention aims to provide a submerged surface cleaner device whose cleaning efficiency is considerably improved at a negligible cost to manufacture.
- the invention relates to a submerged surface cleaning apparatus comprising:
- a liquid pumping device adapted to generate a liquid suction in each liquid inlet adapted to be able to cause debris through said liquid inlet, characterized in that it comprises at least one protrusion, said accelerating protrusion, s' extending:
- an apparatus according to the invention is adapted so that each accelerating protrusion receives a relative flow of liquid flowing between the base of the hollow body and the immersed surface under the effect of the advancement of the apparatus.
- the base of the hollow body has a shape adapted to allow the flow of the relative flow resulting from the displacement of the apparatus directly in contact with each accelerating protrusion, and at least the most forward accelerating protuberance of the apparatus with respect to the direction of advancement.
- Such an accelerating protrusion is adapted to receive the relative flow of liquid resulting from the advancement of the apparatus and suction through the liquid inlet under the effect of the pumping device, and such an accelerating protrusion has the following effect. effect of accelerating the speed of the liquid thus sucked into said liquid inlet from the front of the apparatus.
- such an accelerating protrusion decreases the passage cross section for the liquid formed between the base of the hollow body and the immersed surface, accelerates locally, especially under the effect of the advancement of the apparatus, the liquid relative to the hollow body (the speed of the liquid downstream of this accelerating protrusion being greater than that of the liquid upstream of the accelerating protuberance), and thus the solid particles, and makes it possible to take off the debris.
- such an accelerating protrusion generally causes a turbulent regime in an area immediately downstream and behind this accelerating protrusion (which may be specifically designed for this purpose), immediately upstream of the liquid inlet. The swirls thus created have the effect of removing debris from the ground.
- an accelerating protrusion is adapted to be able to generate, under the effect of the advance of the apparatus, a turbulent regime between this accelerating protrusion and said corresponding liquid inlet, and to cause an acceleration of the flow of liquid in the inlet of liquid.
- at least one accelerating protrusion has at least one convex end forming at least one discontinuity of curvature adapted to be able to generate a turbulent regime in an area immediately downstream of this end.
- Such an end (which is the part of the accelerating protrusion farthest from the base, that is to say its lower end when the immersed surface is substantially horizontal) having at least one curvature discontinuity forming a turbulent regime can make the subject of many different embodiments.
- this convex end has a very small radius of curvature and / or is generally tapered and / or has surface irregularities ...
- the reduction in cross-sectional area induced by the protrusion leads to a decrease in local static pressure and a venturi effect which improves the suction of the debris.
- the suction speed, and therefore the flow rate of the liquid flow at this liquid inlet is considerably increased.
- the large debris are not blocked in the liquid inlet and are moved at high speed to be sucked by the device.
- the height of liquid allowing suction being determined by the distance between the end of an accelerating protuberance furthest from the base and the immersed surface, the other portions of the base
- the hollow body may be at a greater distance from the submerged surface, to the benefit of an average ground clearance (considered out of each thrust protrusion) improved.
- the occasional decrease in ground clearance induced by such a protuberance not only does not entail additional blockage risks, but, on the contrary, reduces these risks.
- such an accelerating protrusion is disposed in the vicinity of contact areas of drive members of the apparatus with the immersed surface (for example example in a transverse plane located at a short distance behind a transverse plane containing an axle of the apparatus).
- An apparatus according to the invention may comprise one or more accelerating protrusion (s) adjacent to the same liquid inlet, and the shapes and dimensions of each accelerating protrusion may be various. Nevertheless, the inventors have found that a simple rigid rib can serve as an accelerating protrusion according to the invention with a very high efficiency. Thus, advantageously in an apparatus according to the invention, at least one accelerating protrusion is in the general shape of a rib extending over at least one periphery portion in front of said liquid inlet, preferably only along an front edge of said liquid inlet.
- said rib forming an accelerating protrusion has an extreme edge.
- This extreme edge of an accelerating protuberance rib constitutes the portion of the rib which is furthest from the base of the hollow body, and which is therefore closest to the immersed surface.
- said rib extends at least substantially parallel to at least one peripheral edge portion before-in particular only parallel to a peripheral edge portion before- said liquid inlet.
- said rib forms at least a peripheral edge portion before said liquid inlet.
- an accelerating protuberance rib which extends parallel to a peripheral edge portion before the liquid inlet, at a distance from the latter.
- at least for a generally rectangular liquid inlet at least one accelerating protrusion has a constant height.
- an apparatus according to the invention may also comprise at least one accelerating protrusion of constant height in the vicinity of the periphery of a non-rectangular liquid inlet.
- an apparatus according to the invention may comprise at least one accelerating protuberance whose height varies increasingly according to the width of said adjacent liquid inlet.
- each accelerating protrusion extends:
- each accelerating protrusion extends projecting from the base over a height less than half the distance between the base and the immersed surface.
- the height of the accelerating protuberance is less than the height separating the base of the immersed surface imposed by guide members (for example the wheels) of the apparatus on the immersed surface.
- each accelerating protrusion extends relative to the projecting base over a height greater than 5 mm, and so as to preserve a liquid height of at least 7 mm. relative to the immersed surface.
- Other embodiments are possible, in particular in which the notion of height of the protrusion relative to the base would in fact not make sense, these two elements being in continuous extension from one another to the before the entrance.
- at least one accelerating protrusion is rigid (so as not to bend under the effect of the relative velocity of the liquid and the advancement of the apparatus).
- At least one accelerating protrusion is oriented generally in a direction at least substantially normal (at least locally) to the base, in particular at least substantially orthogonal to the immersed surface.
- Other orientations are possible, without however that the accelerating protuberance limits the passage section of the liquid inlet of the base of the hollow body adjacent to this accelerating protrusion.
- the accelerating protrusion extends so as not to mask the liquid inlet of the hollow body and not to modify the passage section.
- At least one accelerating protrusion is connected to a portion of said base extending at least substantially parallel to the immersed surface on the side opposite to said liquid inlet, by a zone of concave bond forming a discontinuity of curvature.
- at least one accelerating protuberance rib is connected by a concave edge to said base on the opposite side to said liquid inlet.
- at least one accelerating protrusion can be connected, on the opposite side to a liquid inlet, to a portion of the base which is concave and contoured with a predetermined curvature adapted to improve efficiency.
- At least one accelerating protuberance rib has a transverse cross section in the general shape of a triangle. This embodiment has the advantage of simplicity and low manufacturing cost, combined with high efficiency from a hydrodynamic point of view. Other embodiments are possible (e.g., blade-shaped rib extending orthogonally to the base).
- an apparatus comprises, for each liquid inlet, a single accelerating protrusion extending along at least a portion of the periphery in front of said liquid inlet.
- the invention applies to all kinds of cleaning devices, self-propelled or not.
- the apparatus comprises driving members of this hollow body in at least one direction of advancement, called the longitudinal direction, and according to at least one preferred direction of advancement in this longitudinal direction. , and is characterized in that it comprises at least one accelerating protrusion in front, with respect to said preferred direction of advancement, of each liquid inlet. More particularly, advantageously, an apparatus according to the invention comprises at least one accelerating protrusion in front of a front liquid inlet (that is disposed in the front half of the base of the hollow body).
- the apparatus comprises at least one rear guide wall extending rearward (with respect to said preferred direction of advance) of a liquid inlet, this rear guide wall. projecting from the base of said hollow body over a height greater than the height of an accelerating protrusion extending in front of said liquid inlet (and of course on a height less than the ground clearance defined between the hollow body base and the rolling plane).
- a guide rear wall preferably extends over most of the height extending between the base and the immersed surface. It makes it possible to confine the suction zone to the front and to the right of the inlet of liquid while avoiding a suction of liquid coming from the back of the liquid inlet.
- Such a rear guide wall may or may not have scraping or scanning members of the immersed surface, for example tongues or flexible filaments that can rub on the immersed surface.
- an apparatus is also advantageously characterized in that at least one liquid inlet is extended in said hollow body by an inlet duct extending inside the body, each inlet duct having one end at the base of said body forming said liquid inlet, and an opposite end opening into a filter device, and in that said inlet conduit has an effective hydraulic section whose area varies from said inlet of liquid, up to a maximum value at its opposite end opening into the filter device.
- the invention applies in particular advantageously to an apparatus which comprises: a filtration chamber formed in said body and having:
- At least one liquid inlet At least one liquid inlet
- At least one liquid outlet out of the hollow body located at a distance from the base of said hollow body, an on-board pumping device, A hydraulic circuit adapted to ensure, when said pumping device is active, a circulation of liquid between at least one liquid inlet and at least one liquid outlet, called the pumping outlet, through at least one filtering device; rolling members having areas of contact with the submerged surface defining a rolling plane of the hollow body on the immersed surface and at least one electric drive motor on board at least a portion of said rolling members.
- the apparatus comprises front rolling members (for example a front axle carrying front wheels), a front liquid inlet, and adjacent and in front of this front liquid inlet, a accelerating protuberance extending a short distance rearward contact areas of the rolling bodies before the device.
- front rolling members for example a front axle carrying front wheels
- front liquid inlet for example a front liquid inlet
- accelerating protuberance extending a short distance rearward contact areas of the rolling bodies before the device.
- the invention nevertheless also applies to other types of apparatus, for example to an apparatus whose hollow body does not incorporate a filtering device, the filtering being for example carried out in a device disposed outside the basin and connected to the device.
- the invention also relates to an apparatus characterized in combination by all or some of the characteristics mentioned above or below.
- FIG. 1 is a diagrammatic perspective view of a cleaning apparatus according to one embodiment of the invention
- FIG. 2 is a diagrammatic view in vertical longitudinal section of a cleaning apparatus according to an embodiment of the invention. invention
- FIG. 3 is a diagrammatic view in simplified longitudinal longitudinal section of FIG. 2 showing the apparatus in operation on a submerged surface
- FIG. 4 is a schematic perspective view of a filtering device of an apparatus according to one embodiment of the invention comprising two shells assembled to one another,
- FIG. 5 is a schematic perspective view of the filter device of FIG. 4 showing the two shells separated from one another
- FIG. 6 is a diagrammatic view in vertical longitudinal section of the filter device of FIG. 4, the two shells being assembled to one another,
- FIG. 7 is a schematic cross-sectional view of the device of FIG. 4 at the inlet duct of this device
- FIG. 8 is a diagrammatic perspective view from below of the apparatus of FIGS. 1 to 3,
- FIG. 9a is a vertical longitudinal section diagram illustrating the circulation of the liquid at a liquid inlet of a device according to the state of the art
- FIG. 9b is a similar diagram illustrating the circulation of the liquid. at the level of a liquid inlet of an apparatus according to the invention.
- An apparatus according to the invention comprises, in the embodiment shown, a hollow body 1 and rolling bodies 2, 3, 4 for guiding and driving the hollow body 1 on a surface immersed in a main direction of advancement, said longitudinal direction, parallel to the immersed surface.
- This hollow body 1 is formed mainly of a concave casing delimiting a main enclosure. This concave casing is for example made by molding or rotational molding.
- This housing is preferably made of a thermoplastic material, such as polyethylene, polypropylene, ABS, PMMA or any equivalent material.
- This hollow body 1 has a central chamber adapted to receive a filtration chamber 8.
- This central chamber is delimited by a bottom wall, said base 16, extending in a substantially horizontal plane; by sidewalls 17 extending generally in vertical planes; by a front wall 21 extending generally in a vertical plane, orthogonal to the planes of the vertical side walls; and by a rear wall 22 extending generally in a vertical plane orthogonal to the planes of the vertical side walls.
- the base 16 of the body 1 has an opening extending transversely to the vicinity of the front wall so that liquid can enter the central chamber through this lower transverse opening. This opening forms an inlet 9 of liquid in the hollow body 1.
- the rear wall comprises a cylindrical opening forming a liquid outlet out of the hollow body 1.
- This liquid outlet 10 formed in the rear wall of the housing is longitudinally offset from the inlet 9 of liquid formed in the bottom wall.
- this liquid outlet 10 is arranged in the upper part of the casing so that it is also vertically offset from the inlet 9 of liquid.
- this central chamber, this liquid inlet 9 and this liquid outlet 10 form a filtration chamber 8.
- This filtration chamber 8 further comprises a hydraulic circuit adapted to ensure a flow of liquid between the inlet 9 of liquid and the outlet 10 of liquid through a filtering device 11.
- the inlet 9 of liquid and the outlet 10 of liquid are centered on a same longitudinal vertical plane of the apparatus.
- the central chamber of the hollow body 1 is adapted to receive a device 1 1 filtering.
- the filtering device 11 comprises, as represented in particular in FIGS. 4 and 5, two shells, a first shell 55 forming a debris recovery pocket and a second shell 49 adapted to be assembled to the first shell 55.
- the first shell 55 which forms a debris recovery pocket of the filtering device 11 has filtering walls 56, 57, 58, 59 extending rearwardly from an opening 64 before. These walls 56, 57, 58, 59 filtering are adapted to retain any debris carried by the liquid and to allow the flow of liquid out of this first shell 55.
- the second shell 49 forms a conduit 15 for entering the liquid in the body 1 hollow.
- This liquid inlet duct 15 extends inside the hollow body 1 and has an end, said lower end 81, located substantially at the base 16 of the hollow body 1, and an opposite end, said end 82 upper, which opens, when the shells 49 and 55 are assembled, in the first shell 55.
- This inlet duct 15 has a cross section whose area varies from its lower end 81 to a maximum value to its upper end 82.
- the inlet conduit 15 has a longitudinal profile which is generally divergent from its lower end 81 to its upper end 82, and a transverse profile of convergent shape / diverge.
- the inlet conduit 15 has a first section 83 converging from its lower end 81 to a neck 85 area of minimum area, and a second diverging section 84 extending the first section 83 from this neck 85 up to its upper end 82.
- the first section 83 extends over less than 20% of the total length of the inlet duct 15 and the second section 84 extends over more than 80% of the total length.
- the inlet duct 15 has, at its upper end 82, a cross section twice the area of the cross section at its lower end 81.
- the area of the section at pass 85 is the order of 20% less than the area of the section at the lower end 81.
- the assembly between the first shell 55 and the second shell 49 can be achieved by various means.
- the first shell 55 comprises, at its lower front end, pins 68 which project from the plane of the opening 64 of the first shell 55.
- These tenons 68 have shapes and dimensions shaped and conjugated with lights 69 formed in tabs 70 integral with the lower rear end of the inlet duct 15, and substantially perpendicular to the rear wall of the duct, so that these pins 68 can to snap into the lights 69 and allow a mechanical connection of the lower ends of the first shell 55 and the second shell 49.
- the first shell 55 has at its upper front end a member 71 adapted to be housed in a cleat 72 formed at the upper end of the front wall of the conduit 15 so as to allow the assembly between the upper ends of the e the first shell 55 and the second shell 49.
- This element 71 protrudes relative to the plane of the opening 64 and has a strip which extends downwards, not shown in the figures, and adapted to come s' nesting in the cleat 72.
- the end of the cleat 72 oriented towards the first shell 55 is further bevelled to facilitate the insertion of the rule of the element 71 into the cleat 72.
- this cleat 72 is flexible in compression such that it can deform slightly downwardly during engagement between member 71 and cleat 72.
- This compression flexibility also allows a user to exert downward pressure on cleat 72, for example with his thumb, which disengages the ruler of the element 71 of the cleat 72, thus causing a separation of the upper ends of the first shell 55 and the duct 15.
- the assembly between the first shell 55 and the second hull 49 is achieved by first assembling the lower ends to one another and then fitting the upper ends into one another.
- the separation of the hulls is carried out by first disengaging the ends from each other and then disengaging the lower extremities from each other. Assembly and separation of the first 55 and the second shell 49 can therefore be easily performed without tools by a user.
- This relative assembly between the first shell 55 and the second shell 49 is adapted so that once assembled, the second shell 49 closes said opening 64 before the first shell 55, with the exception of a liquid inlet passage. constituting an inlet opening 54 of the liquid in the first shell 55, the section of this inlet opening 54 is smaller than that of the opening 64 before the first shell 55.
- the first shell 55 which forms the pocket of debris recovery is formed of a rigid frame 26 and a filtering web -particularly a filter cloth- extending into openings provided by this framework.
- the filtering device 11 is therefore self-supporting and can be easily manipulated by a user.
- this filter device 1 1 forms an extractable filter housing whose lower end defined by the lower end of the inlet duct 15 forms the inlet 9 of liquid in the hollow body 1.
- the first shell 55 has a decreasing transverse cross section from the front opening 64 towards the liquid outlet 10 so as to form a convergent filtration chamber of the tangential type of the liquid flowing between the opening 64 and the outlet 10 of the liquid.
- the first shell 55 has a bottom filter wall 56 inclined backwards and upwards from a bottom portion of the first shell 55.
- This lower inclined wall 56 forms with the longitudinal direction an angle which in the example shown is of the order of 45 °.
- This first shell 55 further comprises a generally horizontal upper wall 57 and extending rearwardly from the front opening 64.
- This filtering upper wall 57 is connected to the filtering lower wall 56 by a portion 61 upper extreme rear curve.
- the rearwardly curved portion 61 has a minimum cross sectional cross section while the portion of the first shell 55 at the opposite of this curved portion 61, that is to say at the opening 64 before, has a maximum cross section.
- the first shell 55 has a decreasing transverse cross section from the front opening 64 to the rearwardly curved portion 61, that is, towards the rear exit 10.
- the first shell 55 has a cross section having the shape of a right triangle, the lower wall 56 inclined forming the hypotenuse.
- the apparatus also comprises, as represented in FIG. 1, a hatch 6 for access to this filtering device 1 1.
- This access hatch 6 forms an upper wall of the hollow body 1 and covers the latter.
- this hatch 6 is formed on the top of the device so that a user of the device can easily open the hatch 6 and extract the filter device 11.
- the access hatch 6 is articulated to the body 1 of the apparatus by hinges 23 arranged at the rear of the apparatus.
- the filtering device 1 1 is a device mounted in the filtration chamber 8 of the hollow body 1 in the manner of a drawer.
- the rigid frame 26 of the filtering device 1 1 also has two ribs 25 extending laterally on each side of the filtering device 11. These ribs are preferably formed on the side walls of the inlet duct 15 since this duct has no filter walls. However, they could according to other embodiments be arranged on the side walls of the filter walls, for example on the frame 26 of the first shell. Wherever they are, these ribs 25 have shapes and dimensions shaped and conjugate to the shapes and dimensions of grooves integral with the hollow body 1. These grooves integral with the hollow body 1 extend vertically along the inner faces of the vertical side walls of the hollow body 1.
- the ribs 25 of the filtering device 11 are therefore adapted to cooperate with the grooves of the hollow body 1 of the apparatus.
- the extraction of the filtering device 11 results from a translational movement of the filtering device 1 1 along the grooves of the hollow body 1.
- a user can therefore easily remove the filtering device 11 from the body
- I hollow for example to proceed to its cleaning.
- a user can easily, as indicated above, separate the two shells forming this device. This user can thus clean the first shell which forms the debris recovery pocket, as well as the second shell 49 which forms the inlet duct 15 and the liquid inlet 9 arranged at the lower end of the inlet duct 15 .
- the user can easily assemble these shells 49, 55, as indicated above, and reintroduce without difficulty the filtering device 11 in one piece in the hollow body 1 by orienting the filter device 11 so that the ribs 25 of the filtering device 11 are opposite the grooves of the hollow body, then sliding the filtering device 11 into the hollow body 1.
- the filtering device 11 further comprises a handle 28 formed on an upper portion of the filtering device 1 1 so as to facilitate the handling of the filtering device 11.
- a user can easily assemble / disassemble the filtering device 11 via this handle 28 when the device is out of the liquid and rests on a horizontal surface.
- the handle 28 is an extension of the rear portion of the element 71.
- This inlet 9 of liquid is, in the example shown, generally rectangular, extending transversely over most of the width of the base 16 of the hollow body.
- This inlet 9 of liquid is delimited by a border extending in a plane, preferably at least substantially horizontal, that is to say at least substantially parallel to the immersed surface.
- the liquid enters the inlet duct via this liquid inlet 9 in a direction corresponding to that of the inlet duct at this liquid inlet 9, and this direction is at least substantially vertical, that is, to say at least substantially orthogonal to the submerged surface.
- the lower end 81 of the duct 15 is furthermore provided with an end lining forming a flux guide 27 mounted on the lower end 81 by mechanical assembly according to any appropriate assembly means (resilient locking engagement; bonding, welding ).
- the flux guide 27 has, at the front of the liquid inlet 9, a front rib 31 extending along the front edge 32 of the rectangular opening formed by the lower end 81.
- the rib 31 constitutes an accelerating protrusion extending projecting from the base 16 of the hollow body 1 towards the immersed surface (that is to say towards the rolling plane 50 of the apparatus described hereinafter) on a certain height hl less than the height h2 separating the base 16 from the submerged surface and the rolling plane 50.
- a height h3 of liquid is preserved between the lower end portion 33 of the rib 31 and the immersed surface (plane of rolling 50). And this height h3 is greater than the height hl projecting from the rib 31 relative to the base 16 of the hollow body.
- the rib 31 is rigid and has a height h1 which is constant along its length, that is to say all along the front edge of the inlet 9 of liquid.
- h1 is less than h3, and more preferably less than h3 / 2.
- hl is preferably greater than 5 mm
- h3 is preferably greater than 7 mm.
- hl is of the order of 7 mm
- h3 is of the order of 15 mm
- h2 h3 + hl being of the order of 22 mm.
- other values are possible, their choice resulting from an optimization according to the performance of the device, its shapes and dimensions and its use.
- the lower end portion 33 of the rib 31 is a convex edge 33 forming a discontinuity of curvature capable of generating, under the effect of the advance of the apparatus, a turbulent regime downstream of this edge 33.
- a discontinuity of curvature has the effect of imposing a detachment of the boundary layer downstream of the edge 33.
- the radius of curvature of the edge 33 is made as small as possible taking into account the constraints of manufacture (including molding) and use (to avoid any injury to the user during manipulation). It is for example less than 1 mm, especially less than hl / 10.
- this extreme edge 33 of the accelerating protrusion 31 is in front of the front edge 32 of the liquid inlet 9, in particular so as not to mask, even partially, this inlet 9 of liquid.
- the entire section S1 of the liquid inlet 9 is preserved (that is to say remains the same in the absence and in the presence of the accelerating protrusion 31) and allows the passage of debris.
- the rib 31 has, at the front of the edge 33, a substantially planar inclined face 37 connected to the front portion 36 of the base 16 of the hollow body 1 located immediately at the end. before the entry 9 of liquid.
- the inclined face 37 is connected to the front portion 36 of the base 16 by a concave edge 38 also forming a discontinuity of curvature between said front portion 36 and the inclined face 37.
- the rib 31 has a transverse cross-section (in section through a vertical longitudinal plane of the apparatus) in the general shape of an isosceles triangle whose apex is oriented downwards (formed by the ridge 33).
- the rib 31 thus also has a rear inclined portion 39 connected to the front edge 32 of the lower end 81 of the inlet duct.
- Other forms of sections are possible (right triangle, blade, ).
- the flux guide 27 also has, at the rear of the liquid inlet 9, a rear guide wall 34 which protrudes from the base 16 of the hollow body 1 over a height h4 greater than the height. hl of rib 31 before.
- the height h4 of the rear guide wall 34 is preferably slightly smaller than the height h2 separating the base 16 from the rolling plane 50, that is to say that the rear guide wall 34 extends over the greater part the height h2 of liquid passing under the base 16 of the hollow body 1.
- the guiding rear wall 34 has the function of preventing, or in any case limiting, the unwanted liquid suction leaks from the rear of the liquid inlet 9, and of improving the guiding of the liquid by diverting it towards the top in the inlet duct 15. She is of preferably slightly bent forward and downward to facilitate the deflection of the liquid.
- the rear guide wall 34 has an extreme lower edge 35 which is advantageously provided with bristles or tongues or other scraping or sweeping members (not shown) of the immersed surface.
- the extreme lateral walls of the flux guide 27 may be formed to make a connection between the front rib 31 forming an accelerating protrusion and the rear guide wall 34. In a variant, nothing prevents the flow guide 27 from being free of side walls. It should be noted that in any event, the end edge formed by the flux guide 27 forming its leading edge with respect to the hydraulic flow does not extend in a plane.
- the end 33 of the front rib 31 forming a protruding protruding protrusion constitutes a portion of this leading edge and has, relative to the immersed surface, a height different from the rest of the other edge portions of this leading edge. .
- the apparatus comprises a motorized liquid pumping device comprising an electric pumping motor 12 having a rotating motor shaft 13 coupled to a pumping propeller 14 interposed in the hydraulic circuit so as to generate a flow rate therefrom.
- liquid between the inlet 9 of liquid and the outlet 10 of liquid.
- the liquid outlet 10 is directly opposite the pumping propeller so that the liquid flows out of the liquid outlet 10 in a direction corresponding to the flow of liquid generated by the pumping propeller, this flow having a speed oriented along the axis 51 of rotation of the propeller 14.
- the pumping propeller 14 has an orientation for generating a liquid flow with a horizontal component to the rear.
- the pumping propeller 14 interposed in the hydraulic circuit between the liquid inlet 9 and the liquid outlet 10 has an inclined axis of rotation making, with said longitudinal direction and with the theoretical rolling plane 50, an angle ⁇ different from 90 °.
- This propeller 14 is driven in rotation by the electric pumping motor 12 which preferably has a rotating motor shaft 13 parallel to the axis of rotation of the propeller 14.
- the electric pumping motor 12 is arranged under the hydraulic circuit, entirely outside this hydraulic circuit which entirely bypasses the pump motor 12 from above.
- the rotary shaft 13 of the pump motor 12 passes through an inclined lower wall defining the hydraulic circuit.
- the seal is provided by an O-ring 18.
- Figures 3 and 9b show the flow of liquid at the inlet of the apparatus according to the invention and in the hollow body 1 of the apparatus. This circulation is represented schematically by the arrows 66.
- the flow of liquid sucked from the front of the apparatus as it moves is deflected by the rib 31 which has the effect of generating, under the effect of the advancement of the apparatus, a zone 40 of turbulent regime downstream of the rib 31, and to tighten the effective hydraulic section of the flow entering the inlet 9 of liquid, without, however, obscuring or restricting the total effective section Sl of passage of the inlet 9 of liquid.
- the effective hydraulic section S2 of the liquid flow in the liquid inlet 9 is less than the total effective section S1 of the liquid inlet 9, which allows the passage of bulky debris.
- the deviation of the liquid in the liquid inlet 9 is furthermore favored by the rear guide wall 34.
- the speed and the dynamic pressure the flow of liquid entering the apparatus are increased, and, on the other hand, the ground clearance h2 of the base 16 of the hollow body is increased.
- a device not according to the invention which has a lower base 16 of the hollow body free of accelerating protrusion and at a height h3 of the rolling plane equivalent to that of the accelerating protrusion of a device according to the invention, has a much lower suction capacity.
- the suction performance of an apparatus according to the invention are significantly better.
- the ground clearance of the apparatus according to the invention at the level of the accelerating protuberance 31 is localized punctually, which limits and even reduces the risk of blocking on bottom obstacles of the basin. This is particularly the case when the accelerating protrusion 31 is close to a transverse plane containing an axle (particularly as in the embodiment shown where the protuberance 31 is close to the transverse plane containing the contact zones of the front wheels 2 with the submerged surface).
- the liquid enters the hollow body 1 through the inlet 9 of liquid arranged under the apparatus. This liquid passes into the second shell 49 forming the liquid inlet duct 15 to reach the first shell 55 which forms a debris recovery pocket. This debris recovery pouch allows the liquid to pass through the filter cloth and retains solid debris.
- the filtered liquid then reaches the liquid outlet 10 and is ejected at the rear of the apparatus, in the basin from which it comes.
- the liquid outlet 10 facing the pumping propeller 14 the liquid flows out of the apparatus through this outlet with a speed V oriented along the axis 51 of the pumping propeller 14 and having a component longitudinally rearward which induces by reaction forces, whose resultant has a longitudinal component of forward drive which participates in driving the apparatus on the immersed surface.
- the orientation of the hydraulic reaction force created by this output flow, and therefore the amplitude of its longitudinal component, depend on the inclination ⁇ , relative to the theoretical rolling plane 50, of the axis 51 of rotation. of the propeller and the liquid outlet.
- this inclination ⁇ is between 15 ° and 45 °.
- the electric pumping motor is disposed under the hydraulic circuit, entirely outside this hydraulic circuit, so that the filtering device 11 of the hydraulic circuit can be removed from the apparatus from the top of the apparatus as before mentioned, without being bothered by the pumping motor.
- Only the pumping propeller 14 is arranged in the hydraulic circuit so as to ensure the flow of liquid.
- This pumping propeller 14 is arranged at the rear of the apparatus, close to the liquid outlet 10. In other words, the pump propeller 14 and the liquid outlet 10 form the end portion of the hydraulic circuit.
- the rolling members for guiding and driving the apparatus comprise a front axle comprising front-wheel drive wheels, one on each side, and a rear axle comprising wheels. 3 non-drive rear, one on each side.
- the apparatus comprises brushes 4 arranged at the front of the apparatus. These brushes 4 are intended to ensure a brushing of the immersed surface and to move the brushed debris towards the rear of the apparatus in the direction of the inlet 9 of liquid arranged under the device.
- the apparatus further comprises at least one electric motor for driving the front 2-wheel drive wheels.
- the apparatus comprises two drive motors, one on each side, respectively for the independent drive of each of the front wheels.
- each front wheel 2 has an internal toothing 5 cooperating with a pinion driven by the corresponding drive motor 20.
- the apparatus comprises two coaxial front brushes 4.
- Each brush 4 is adapted to be rotated about an axis extending in a direction perpendicular to the longitudinal direction.
- Each brush 4 comprises a plurality of fins 41 extending radially from a brush shaft forming the axis of rotation of the brush 4.
- the fins 41 are for example made of rubber made of a resistant plastic material.
- the brushes 4 are preferably also rotated from at least one electric drive motor 2 of the front wheels 2 via a gear system.
- the rolling members consist of the front wheels 2 driving, rear wheels 3 non-driving and brushes 4 which participate in driving and guiding the apparatus on the immersed surface.
- the rolling members 2, 3, 4 have areas intended to come into contact with the immersed surface which are coplanar and define a theoretical rolling plane 50.
- the longitudinal direction of advancement of the apparatus is parallel to this theoretical plane of rolling.
- the front wheels 2 preferably have a diameter of between 100 mm and 500 mm, in particular between 150 mm and 250 mm.
- the front wheels 2 have a diameter of the order of 200 mm. In this way, these front wheels 2 facilitate the crossing of obstacles and have improved motor skills.
- front wheels 2 and the brushes 4 constitute front driving members 2, 4 which extend projecting forwardly with respect to the other components of the apparatus, in particular the hollow body, so as to form the end part. before the aircraft and coming first into contact with an obstacle encountered during the forward movement.
- the electric motors for driving and pumping can be of all types known. According to a preferred embodiment, these electric motors are low voltage motors. They can be powered by a power supply external to the device via an electric cable, not shown in the figures, which is connected to the device at an input zone 19 of the electrical cable in the apparatus, as shown in FIG.
- the apparatus shown also comprises a maneuvering handle 7 allowing a user to carry the device to immerse in a liquid and out of the latter.
- This handle 7 is preferably arranged opposite the outlet 10 of liquid so that when the hollow body 1 is suspended by this handle, the apparatus switches spontaneously under the effect of gravity in a position in which the outlet 10 liquid is located under the inlet 9 of liquid, which allows a drain of the device.
- the appliance is moved from the cleaning position to the emptying position, the debris sucked by the appliance is held in the filtering device and is not likely to come out of the appliance.
- the filtering device 11 comprises several convergent / divergent liquid inlet ducts 15.
- the design and design of the device are subject to infinite variants.
- the invention applies to a bidirectional device capable of movement retrograde.
- the invention applies to all other categories of motorized devices or not. It can be provided several liquid inlets, and for each liquid inlet, one or more protrusion (s) accelerator (s).
- Each accelerating protrusion may be formed of a plurality of elements interposed in the flow (upstream of the corresponding liquid inlet forming an edge thereof or at a distance from an edge thereof) with some height, for example arranged staggered or otherwise, having the effect of creating a turbulent regime, and, above all, to increase the speed of the liquid and its dynamic pressure at the entrance of the hollow body of the apparatus.
- each accelerating protuberance may not be constant along the upstream edge of the liquid inlet.
- the height h1 of each accelerating protuberance at each point may depend on the width of the liquid inlet downstream from that point. More generally, this height hl is optimized according to the design and performance of the device, in particular according to the size of the liquid inlet, the suction flow rate of the pump (pumping propeller 14 and associated engine). .. Increasing the height hl of each accelerating protrusion of course enhances the effects produced by this accelerating protrusion as indicated above, but increases the induced pressure drop and reduces the passage section under the device.
- the base 16 of the hollow body 1, and more particularly its front portion 36 is not necessarily flat as shown, but may be profiled with a suitable curvature, for example concave, so as to facilitate the flow of the flow upstream of the accelerating protrusion 31.
- the accelerating protuberance may be formed by the base 16, and not by the lower end 81 of the filter device 11. The same is true of the rear guide wall.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Cleaning In General (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0801675A FR2929310B1 (fr) | 2008-03-27 | 2008-03-27 | Appareil nettoyeur de surface immergee a protuberance acceleratrice du flux d'entree |
PCT/FR2009/050511 WO2009125130A2 (fr) | 2008-03-27 | 2009-03-25 | Appareil nettoyeur de surface immergée à protubérance accélératrice du flux d'entrée |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2255049A2 true EP2255049A2 (fr) | 2010-12-01 |
EP2255049B1 EP2255049B1 (fr) | 2011-08-31 |
Family
ID=39832439
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09730914A Active EP2255049B1 (fr) | 2008-03-27 | 2009-03-25 | Appareil nettoyeur de surface immergée a protubérance accélératrice du flux d'entrée |
Country Status (5)
Country | Link |
---|---|
US (1) | US8397331B2 (fr) |
EP (1) | EP2255049B1 (fr) |
AT (1) | ATE522683T1 (fr) |
FR (1) | FR2929310B1 (fr) |
WO (1) | WO2009125130A2 (fr) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8343339B2 (en) | 2008-09-16 | 2013-01-01 | Hayward Industries, Inc. | Apparatus for facilitating maintenance of a pool cleaning device |
US8402585B2 (en) * | 2009-10-19 | 2013-03-26 | Poolvergnuegen | Convertible pressure/suction swimming pool cleaner |
US9593502B2 (en) | 2009-10-19 | 2017-03-14 | Hayward Industries, Inc. | Swimming pool cleaner |
CA2803834C (fr) * | 2010-06-28 | 2018-03-06 | Zodiac Pool Care Europe | Appareils de nettoyage de piscine automatiques et leurs composants |
US8784652B2 (en) | 2010-09-24 | 2014-07-22 | Poolvergnuegen | Swimming pool cleaner with a rigid debris canister |
US8869337B2 (en) | 2010-11-02 | 2014-10-28 | Hayward Industries, Inc. | Pool cleaning device with adjustable buoyant element |
EP2900888B1 (fr) * | 2012-09-26 | 2017-08-23 | Hayward Industries, Inc. | Appareil de nettoyage de piscine |
CA2906043A1 (fr) | 2013-03-14 | 2014-10-02 | Hayward Industries, Inc. | Systeme de nettoyage pour piscine avec des elements de nettoyage articules |
WO2014150506A1 (fr) | 2013-03-15 | 2014-09-25 | Hayward Industries, Inc. | Dispositif de nettoyage de piscine doté d'ensembles entraînement de roue |
USD787760S1 (en) | 2014-11-07 | 2017-05-23 | Hayward Industries, Inc. | Pool cleaner |
USD789624S1 (en) | 2014-11-07 | 2017-06-13 | Hayward Industries, Inc. | Pool cleaner |
USD787761S1 (en) | 2014-11-07 | 2017-05-23 | Hayward Industries, Inc. | Pool cleaner |
USD789003S1 (en) | 2014-11-07 | 2017-06-06 | Hayward Industries, Inc. | Pool cleaner |
US9885196B2 (en) | 2015-01-26 | 2018-02-06 | Hayward Industries, Inc. | Pool cleaner power coupling |
CA3146537C (fr) | 2015-01-26 | 2023-01-03 | Hayward Industries, Inc. | Nettoyeur de piscine avec separateur de particules hydrocyclonique et/ou systeme d'entrainement a six rouleaux |
AT517469B1 (de) | 2015-09-10 | 2017-02-15 | Fränkel Andrés | Unterwasserreiniger |
EP3510216B1 (fr) | 2016-09-06 | 2024-11-06 | Zodiac Pool Systems, Inc. | Nettoyeurs automatiques flottants |
US9896858B1 (en) | 2017-05-11 | 2018-02-20 | Hayward Industries, Inc. | Hydrocyclonic pool cleaner |
US9878739B1 (en) | 2017-05-11 | 2018-01-30 | Hayward Industries, Inc. | Pool cleaner modular drivetrain |
US10676950B2 (en) | 2017-05-11 | 2020-06-09 | Hayward Industries, Inc. | Pool cleaner roller latch |
US10156083B2 (en) | 2017-05-11 | 2018-12-18 | Hayward Industries, Inc. | Pool cleaner power coupling |
US9885194B1 (en) | 2017-05-11 | 2018-02-06 | Hayward Industries, Inc. | Pool cleaner impeller subassembly |
US9885195B1 (en) | 2017-05-11 | 2018-02-06 | Hayward Industries, Inc. | Pool cleaner roller assembly |
US10774557B1 (en) | 2019-02-21 | 2020-09-15 | Aquatron Robotic Technology Ltd. | Pool cleaner with selective inlet control |
USD1022362S1 (en) * | 2022-11-22 | 2024-04-09 | Degrii Co., Ltd. | Swimming pool cleaner with controller |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2567552B1 (fr) * | 1984-07-11 | 1986-12-05 | Puech Frederic | Appareil de nettoyage automatique d'une surface immergee |
AU4646185A (en) * | 1984-12-18 | 1986-06-26 | Jack Nel Agencies (Panama) S.A. | Suction cleaner for submerged surfaces |
US5105496A (en) * | 1990-10-18 | 1992-04-21 | Arneson Products, Inc. | Suction cleaning device |
ES2086444T3 (es) * | 1990-10-31 | 1996-07-01 | 3S Systemtechn Ag | Aparato de limpieza autopropulsado, en particular para piscinas. |
US5412826A (en) * | 1993-04-01 | 1995-05-09 | Raubenheimer; Dennis A. | Suction cleaner for submerged surfaces |
CA2258842A1 (fr) * | 1996-06-26 | 1997-12-31 | Jordan M. Laby | Systeme de nettoyage automatique de piscine a pression positive |
WO2002001023A1 (fr) * | 2000-06-24 | 2002-01-03 | Henkin Melvyn Lane | Dispositif de commande de turbine et procede conçu pour epurateur de piscine aspirant a alimentation electrique |
US7945981B2 (en) * | 2006-06-21 | 2011-05-24 | Harold Lapping | Automatic pool cleaner with flexible scrubbing panel |
-
2008
- 2008-03-27 FR FR0801675A patent/FR2929310B1/fr active Active
-
2009
- 2009-03-25 EP EP09730914A patent/EP2255049B1/fr active Active
- 2009-03-25 WO PCT/FR2009/050511 patent/WO2009125130A2/fr active Application Filing
- 2009-03-25 US US12/863,989 patent/US8397331B2/en active Active
- 2009-03-25 AT AT09730914T patent/ATE522683T1/de not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO2009125130A3 * |
Also Published As
Publication number | Publication date |
---|---|
WO2009125130A3 (fr) | 2009-12-23 |
EP2255049B1 (fr) | 2011-08-31 |
ATE522683T1 (de) | 2011-09-15 |
WO2009125130A2 (fr) | 2009-10-15 |
FR2929310B1 (fr) | 2016-06-03 |
US20110047727A1 (en) | 2011-03-03 |
FR2929310A1 (fr) | 2009-10-02 |
US8397331B2 (en) | 2013-03-19 |
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