EP1905334B1 - Vacuum cleaner equipped with a noise-attenuation device - Google Patents

Vacuum cleaner equipped with a noise-attenuation device Download PDF

Info

Publication number
EP1905334B1
EP1905334B1 EP07356118A EP07356118A EP1905334B1 EP 1905334 B1 EP1905334 B1 EP 1905334B1 EP 07356118 A EP07356118 A EP 07356118A EP 07356118 A EP07356118 A EP 07356118A EP 1905334 B1 EP1905334 B1 EP 1905334B1
Authority
EP
European Patent Office
Prior art keywords
vacuum cleaner
air
air outlet
cavity
motor
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.)
Active
Application number
EP07356118A
Other languages
German (de)
French (fr)
Other versions
EP1905334A1 (en
Inventor
Fabien David
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.)
SEB SA
Original Assignee
SEB SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SEB SA filed Critical SEB SA
Priority to PL07356118T priority Critical patent/PL1905334T3/en
Publication of EP1905334A1 publication Critical patent/EP1905334A1/en
Application granted granted Critical
Publication of EP1905334B1 publication Critical patent/EP1905334B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/0081—Means for exhaust-air diffusion; Means for sound or vibration damping

Definitions

  • the invention relates to the field of household appliances vacuum cleaners and more particularly the structure of a vacuum cleaner.
  • the present invention aims to provide a device for reducing the noise related to the operation of the vacuum cleaner.
  • Many documents address this issue, including proposing engine containment solutions, associated or not with an extension of the air path from the engine to the outlet openings in the frame of the vacuum cleaner.
  • the document EP 0345699 has an extension of the air path after the engine with baffles. Such a device is however bulky and therefore bulky.
  • the document US 4,015,683 thus describes a device consisting of a connecting tube connected to the vacuum air outlet. At its opposite end is disposed a tube of the same diameter lined with foam by providing a central duct star section, grooves to accentuate the effect of attenuation sounds. At the end of this tube is positioned a plastic plate incorporating the star section of the central duct.
  • This arrangement represents a prominence on the device that can cause a certain fragility of the device during movement of the device.
  • the sound attenuation effect is only related to the path in the foam-filled conduit and the specific star structure of said foam. The inevitable temporal degradation of the foam therefore does not guarantee the durability of the effect.
  • the document US 4,418,443 discloses a vacuum cleaner having a filter bag disposed after the engine, a conduit from the engine entering the bag through a noise attenuation device consisting of a sequence of tubes of different diameters.
  • This noise attenuation device is entirely inside the vacuum bag, and therefore the vacuum cleaner, which makes the device bulky, while making it difficult to access the dust contained in the bag.
  • the present invention proposes to remedy the drawbacks cited by proposing a vacuum cleaner comprising a frame, inside which is housed a electric motor associated with a fan for creating, in operation, a suction of air from a pipe, upstream of the engine, terminated by a nozzle, to an air outlet of the frame located downstream of the engine, a device filtering device being disposed on the air flow path, preferably upstream of the engine, and a noise attenuation device disposed downstream of the engine, characterized in that said noise attenuation device comprises a cavity defined by a part of the frame and comprising, in the central part, an air outlet duct of the vacuum cleaner substantially vertical and opening, at one of its ends, outside the vacuum cleaner, its other end being disposed at the inside the cavity, said duct being free of any filtering member or deflection of the air.
  • the combination of a cavity and a duct free of any filtration or air deflection device makes it possible, in particular by changing the air passage section, but also by the continuous shape of the duct, achieve significant noise reduction efficiency.
  • the present invention thus goes against the ideas and achievements of air outlet of the vacuum cleaner where invariably, a grid and a filter called “finisher" are housed at the air outlet of the frame of the vacuum.
  • the air outlet duct is straight and has a length greater than 30 mm.
  • a linear duct and having a substantial length is favorable to calm the air flow to make the airflow as laminar as possible.
  • the air outlet duct is tubular having a diameter of between 20 and 55 mm.
  • the air outlet duct of the vacuum cleaner is preceded by an expansion chamber whose air passage surface is at least 10 times greater than the passage surface. air in the air outlet duct.
  • the duct section is constant, to keep the laminar flow.
  • the absence of a step or abrupt section break avoids the detachment of the air knives that can be source of swirls and therefore noise.
  • the flow of air entering the air outlet duct is guided, so that the channelization of the flow is gradual and soft.
  • the inlet of the air outlet duct is flared by having one or more curvatures whose radius is greater than 15 mm.
  • the portion of the frame defining the cavity comprises an inner lining of a foam-type absorbent material.
  • This efficiency is improved by arranging the absorbent material between the part of the frame and a rigid internal structure, which makes it possible, in addition to avoiding any vibration, to increase overall the wall thickness of the device, thus limiting the transparency of the walls. .
  • the frame portion delimiting the cavity is of substantially concave shape.
  • the concave shape seen with respect to the path of the air flow, makes it possible to avoid frontal shocks to said flow with respect to the walls delimiting the cavity, which limits the effects of resonance.
  • the outer air outlet mouth of the duct has an edge whose radius of curvature is less than 2 mm.
  • the architecture of the vacuum cleaner is designed so that the air outlet of the motor is substantially disposed in the extension of the air outlet duct of the vacuum cleaner.
  • the vacuum cleaner 1 consists of a vacuum cleaner body consisting of a lower body 2, an upper body 4, a lid 6 closing the housing 8 of a vacuum bag.
  • the housing 8 comprises, on its rear face, airflow communication openings with the engine compartment.
  • the lid 6 also carries the connector 10 allowing the connection between a suction pipe and the housing of the air filtration bag and storage of the vacuumed waste.
  • the rounded portion at the front of the upper body is configured as a handle 11.
  • organs 12, 14 and 16 respectively controlling the start and stop of the motor, the rewinding of the power cord, and the power of the engine.
  • the air exhaust of the engine is achieved through the subassembly 300 disposed at the rear of the apparatus, on the upper body 4.
  • the motor 20 of the vacuum cleaner is disposed in a shroud 22 in connection with an air outlet opening of the housing 8 of the bag.
  • the figure 5 shows more precisely the structure of the engine zone, in an exploded view.
  • the motor 20 is thus disposed in a shroud 22 comprising an upstream portion 202 covering the engine air inlet, made through openings 203 of the upper part 202, and a downstream part 210 covering the air outlet of the engine.
  • the fairing thus completely surrounds the engine and thus reduces the noise by the confinement thus generated.
  • a seal 216 makes it possible to seal the air inlet of the engine inside the fairing, while a seal 218 makes it possible to seal the ventilation link between the compartment 8 containing the garbage bag and the motor zone.
  • a seal 214 seals between the two parts of the fairing.
  • the lower part 210 of the fairing is pierced with a multitude openings 212 allowing the air out of the fairing. Faced with these openings is an absorbent member 230, such as a foam. This foam is disposed over substantially the entire path of the air from the fairing outlet to the outlet of the frame of the vacuum cleaner, this outlet being preceded by a passage through a filter 240, HEPA type and of the subassembly 300.
  • the lower fairing 210 of the engine, as well as the foam 230 and the HEPA filter 240 are arranged in a support 220 which is fixed on the upper fairing 202, said support thus constituting a second fairing, which, by the presented wall, makes it possible to further reduce perceived noise outside the device.
  • the openings 212 total a surface area of at least 10 cm 2 , each having an area of between 0.75 mm 2 and 40 mm 2 .
  • These openings, as shown in figure 4 are advantageously arranged in a network and located on the rear and bottom faces of the lower part of the fairing, that is to say opposite to the air outlet opening of the frame of the apparatus.
  • the vacuum cleaner comprises a device 300 for attenuating the air outlet noise of the vacuum cleaner, comprising an outer fairing 310, an inner foam 320, and an inner profile 330.
  • the shroud 310 includes clips 312 cooperating with a portion of the upper housing 4 for its maintenance vacuum.
  • the noise attenuation device 300 comprises a central duct 350 opening out of the aspirator through an opening 340 and defined by the joining of the parts 310 and 330.
  • the fairing 310 comprises a portion of the duct 314 to the duct 314. end of which are provided retaining lugs 316, six in number for the embodiment shown.
  • the fairing 310 has a dome shape 318 at the duct, reinforcing its mechanical strength.
  • the inner profile 330 has, for its part, a duct portion 332 comprising two annular ducts: a duct 3320 cooperating with the duct portion 314, and a duct 3322 of larger diameter than the duct 3320, these two ducts being connected to each other by a curved and flared portion 334 defining the inlet of the outlet duct 350.
  • conduit 3320 has an external recess for adjusting the retaining lugs 316.
  • the inner profile 330 includes holding hooks 336, cooperating with flats in the piece 310 (not shown).
  • the intermediate piece 320 is an absorbent material, such as a foam, whose shape is closest to the inner envelope of the outer fairing 310, thus providing a central opening and a dome 322, so that its attenuation effect Noise is as effective as possible by limiting uncovered areas.
  • the Figures 9 and 10 show the device 300 noise attenuation when the three parts 310, 320 and 330 are mounted.
  • the foam 320 is pressed against the inner surface of the outer fairing 310 by the inner profile 330 which is locked on the workpiece 310 by means of the hooks 336.
  • the internal profile 330 has an architecture similar to the inner envelope of the part 310, leading to the realization of the double annular conduit 3320, 3322 as previously explained.
  • the retaining lugs 316 are positioned on the outer step of the duct 3320, thus allowing the duct 350 thus formed to have a smooth internal surface, without breaking the section, which avoids generating noise.
  • the radius of curvature of the flared form 334 of air inlet in the duct 350 is of the order of 20 mm.
  • the height of the duct is approximately 45 mm, comprising a straight portion of height h close to 35 mm, and a curved portion 334.
  • the diameter d of the straight portion is approximately 35 mm.
  • the figure 11 presents, in detail, the air outlet of the duct 350.
  • the duct comprises an edge 352 having a radius of curvature as low as possible given the means used for producing this part.
  • the radius of curvature r is of the order of 1.5 mm.
  • the device 300 for attenuating the air outlet noise is thus disposed on a substantially flat portion of the upper body 4, immediately above the filter 240, thereby providing an air expansion cavity 302.
  • the volume of this cavity is about 700 cm 3 , while the volume of the duct 350 is of the order of 30 cm 3 .
  • the entry into the noise attenuation device 300 comprises an expansion of the air in the lower part of the cavity 302, constituting an expansion chamber 303 marked in dashed lines on the figure 9 .
  • the large difference in volume between the cavity 302 and the duct 350 makes it possible to create, through the cavity 302, a real aeraulic buffer.
  • the insertion of the duct 350 into the cavity, on a height j close to 30 mm, or about 2/3 of the total height of the duct, which also corresponds substantially to 2/3 of the height of the cavity 302, is the result of many attempts to find a good compromise between the size of the device and its effectiveness.
  • the passage surface in the expansion chamber 303 is at least 10 times the passage area in the conduit 350.
  • the air outlet of the engine is substantially aligned with the air outlet duct 350, thus avoiding the turbulence zones, while reducing the length of the ducts and the number of connections.
  • This alignment is conducive to obtaining a laminar flow or at least a flow having a minimum of turbulence.
  • a grid 400 in the duct 350 inserted for example at the level of the meeting.
  • ducts 314 and 3320 providing openings 402 cooperating with the retaining lugs 316.
  • Such a grid must remain acoustically inoperative, providing only a mechanical object retention function from outside the vacuum cleaner. The type of material, the structure of the grid and the mesh will be studied in this sense.
  • Such an air output noise attenuation device is advantageously used in addition to means deployed to limit other sources of noise, for example the use of a specific fairing of the motor, of foams present on the air flow path
  • An increase in the wall thicknesses of the rooms close to the aeraulic path may also be envisaged to limit the transparency of the walls so that the majority of the noise is conveyed by the aeraulic channels in order to make the best use of the device presented.
  • the Figures 13 to 16 show in particular another possible form of noise attenuation device at the air outlet of the frame of the vacuum cleaner.
  • the noise attenuation device 500 retains a generally concave shape, such as the device 300 previously mentioned, and thus has an outer fairing 510 and an inner profile 530 that locks on top of one another. by hooks 516, like the device 300.
  • the fundamental difference is relative to the air outlet opening of the frame, defined by a conduit 550 flared U-shape or smile, as best seen on the figure 15 .
  • This air outlet opening 540 of the frame is therefore devoid of filtration device, as shown in FIG. figure 15 , only a small crossbar, composed of a portion 542 from the shroud 510 and a portion 534 from the inner profile 530, connects the two edges of the conduit 550 in its middle part, to stiffen the structure.
  • This crossbar remains very discreet and affects only very little on the flow of the air flow output.
  • the device 500 with internal foam or grid, such as the elements 320 and 400 of the device 300, their presence may be necessary to improve and protect the device. in the same manner as for the device 300. Their arrangement is substantially identical to that described for the device 300.
  • the sectional view of device 500, presented figure 16 shows that the duct 550 has a structure similar to that of the duct 350, two duct portions 532 and 514, respectively carried by the inner profile 530 and the fairing 510, allow, by external steps made on the two duct portions 532 and 514, to obtain a smooth inner surface for the duct 550, without abrupt section variation. Furthermore, the lower portion of the duct 532 also has a curved and flared portion 534 having a curvature whose radius is greater than 15 mm.
  • the height of the duct is of the order of 35 mm, comprising a portion of constant section, height m close to 30 mm.
  • the length q of the duct is of the order of 200 mm, for a neighboring width r 13 mm, so that the air passage section at the vacuum outlet is of the order of 26 cm 2 .
  • this value makes it possible to reduce the air velocities at the outlet of the vacuum cleaner, which reduces the effect of air blast which can be annoying for the user when the air speeds are high. This reduction in speed is also conducive to a reduction of the ventilation noise.
  • the air passage section of the duct 550 is between 20 and 30 cm 2 .
  • the noise attenuation device 500 also comprises an air expansion cavity 502, whose volume is slightly less than the volume of the cavity 302 of the device 300, but the difference between this volume and the volume of the duct remains sufficiently important for this cavity 502 retains airflow buffer properties as previously mentioned.
  • absorbent can be it in matter, density, or structure.
  • the combination of resonant cavities, Helmholtz resonator types or microperforations can also be envisaged, in association with the device presented or its variant embodiment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Suction Cleaners (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Motor Or Generator Frames (AREA)
  • Manipulator (AREA)
  • Pipe Accessories (AREA)
  • Massaging Devices (AREA)

Abstract

The cleaner has an electric motor (20) connected to a ventilator to create air suction from a manifold in upstream of the motor until an opening (340) of a frame located in downstream of the motor. A noise attenuation device (300) is placed in downstream of the motor and includes a cavity e.g. Helmholtz resonator cavity, delimited by an external shroud (310) and an internal profile (330) of the frame. The cavity has a central pipe (350) with an end projected outside the cleaner and another end placed inside the cavity, where the cavity is free from air deflecting or filtering units.

Description

L'invention concerne le domaine électroménager des aspirateurs et plus particulièrement la structure d'un aspirateur.The invention relates to the field of household appliances vacuum cleaners and more particularly the structure of a vacuum cleaner.

La présente invention a pour but de présenter un dispositif permettant de réduire le bruit lié au fonctionnement de l'aspirateur. De nombreux documents abordent cette problématique, en proposant notamment des solutions de confinement du moteur, associé ou non avec un allongement du parcours de l'air depuis le moteur jusqu'aux ouvertures de sortie ménagées dans le bâti de l'aspirateur.The present invention aims to provide a device for reducing the noise related to the operation of the vacuum cleaner. Many documents address this issue, including proposing engine containment solutions, associated or not with an extension of the air path from the engine to the outlet openings in the frame of the vacuum cleaner.

Ainsi, le document EP 0345699 présente un rallongement du trajet de l'air après le moteur à l'aide de chicanes. Un tel dispositif est toutefois volumineux et donc encombrant.Thus, the document EP 0345699 has an extension of the air path after the engine with baffles. Such a device is however bulky and therefore bulky.

II est également connu de traiter le bruit au niveau de la sortie d'air d'aspirateur. Le document US 4,015,683 décrit ainsi un dispositif composé d'un tube de liaison raccordé à la sortie d'air d'aspirateur. A son extrémité opposée est disposé un tube de même diamètre garni intérieurement de mousse en ménageant un conduit central de section en étoile, des rainures permettant d'accentuer l'effet d'atténuation des sons. A l'extrémité de ce tube est positionnée une plaque plastique reprenant la section en étoile du conduit central. Cet agencement représente une proéminence sur l'appareil qui peut amener une certaine fragilité du dispositif lors du déplacement de l'appareil. De plus, l'effet d'atténuation des sons n'est lié qu'au trajet dans le conduit garni de mousse et à la structure spécifique en étoile de ladite mousse. La dégradation temporelle inévitable de la mousse ne permet donc pas de garantir la pérennité de l'effet.It is also known to process the noise at the vacuum air outlet. The document US 4,015,683 thus describes a device consisting of a connecting tube connected to the vacuum air outlet. At its opposite end is disposed a tube of the same diameter lined with foam by providing a central duct star section, grooves to accentuate the effect of attenuation sounds. At the end of this tube is positioned a plastic plate incorporating the star section of the central duct. This arrangement represents a prominence on the device that can cause a certain fragility of the device during movement of the device. In addition, the sound attenuation effect is only related to the path in the foam-filled conduit and the specific star structure of said foam. The inevitable temporal degradation of the foam therefore does not guarantee the durability of the effect.

Le document US 4,418,443 décrit un aspirateur comportant un sac de filtration disposé après le moteur, un conduit provenant du moteur pénétrant dans ce sac par l'intermédiaire d'un dispositif d'atténuation de bruit composé d'un enchaînement de tubes de différents diamètres. Ce dispositif d'atténuation de bruit est entièrement à l'intérieur du sac d'aspirateur, et donc de l'aspirateur, ce qui rend l'appareil encombrant, tout en rendant difficile l'accès aux poussières contenues dans le sac.The document US 4,418,443 discloses a vacuum cleaner having a filter bag disposed after the engine, a conduit from the engine entering the bag through a noise attenuation device consisting of a sequence of tubes of different diameters. This noise attenuation device is entirely inside the vacuum bag, and therefore the vacuum cleaner, which makes the device bulky, while making it difficult to access the dust contained in the bag.

La présente invention se propose de remédier aux inconvénients cités en proposant un aspirateur comportant un bâti, à l'intérieur duquel est logé un moteur électrique associé à un ventilateur permettant de créer, en fonctionnement, une aspiration d'air depuis une tubulure, en amont du moteur, terminée par un suceur, jusqu'à une sortie d'air du bâti située en aval du moteur, un dispositif de filtration étant disposé sur le trajet aéraulique, de préférence en amont du moteur, ainsi qu'un dispositif d'atténuation du bruit disposé en aval du moteur, caractérisé en ce que ledit dispositif d'atténuation du bruit comporte une cavité délimitée par une partie du bâti et comprenant, en partie centrale, un conduit de sortie d'air de l'aspirateur sensiblement vertical et débouchant, par l'une de ses extrémités, à l'extérieur de l'aspirateur, son autre extrémité étant disposée à l'intérieur de la cavité, ledit conduit étant libre de tout organe de filtration ou de déflection de l'air.The present invention proposes to remedy the drawbacks cited by proposing a vacuum cleaner comprising a frame, inside which is housed a electric motor associated with a fan for creating, in operation, a suction of air from a pipe, upstream of the engine, terminated by a nozzle, to an air outlet of the frame located downstream of the engine, a device filtering device being disposed on the air flow path, preferably upstream of the engine, and a noise attenuation device disposed downstream of the engine, characterized in that said noise attenuation device comprises a cavity defined by a part of the frame and comprising, in the central part, an air outlet duct of the vacuum cleaner substantially vertical and opening, at one of its ends, outside the vacuum cleaner, its other end being disposed at the inside the cavity, said duct being free of any filtering member or deflection of the air.

L'association d'une cavité et d'un conduit libre de tout dispositif de filtration ou de déflection d'air permet, notamment par le changement de section de passage de l'air, mais également par la forme continue du conduit, d'obtenir une efficacité importante de réduction de bruit. La présente invention va ainsi à l'encontre des idées et des réalisations de sortie d'air de l'aspirateur où invariablement, une grille et un filtre dit « finisseur » sont logés au niveau de la sortie d'air du bâti de l'aspirateur.The combination of a cavity and a duct free of any filtration or air deflection device makes it possible, in particular by changing the air passage section, but also by the continuous shape of the duct, achieve significant noise reduction efficiency. The present invention thus goes against the ideas and achievements of air outlet of the vacuum cleaner where invariably, a grid and a filter called "finisher" are housed at the air outlet of the frame of the vacuum.

Avantageusement, le conduit de sortie d'air est droit et présente une longueur supérieure à 30 mm. Un conduit linéaire et présentant une longueur conséquente est favorable à calmer les flux d'air pour rendre le flux d'air le plus laminaire possible.Advantageously, the air outlet duct is straight and has a length greater than 30 mm. A linear duct and having a substantial length is favorable to calm the air flow to make the airflow as laminar as possible.

Selon une autre caractéristique importante de l'invention, le conduit de sortie d'air est tubulaire en présentant un diamètre compris entre 20 et 55 mm.According to another important feature of the invention, the air outlet duct is tubular having a diameter of between 20 and 55 mm.

Il est connu que la vitesse de l'air joue un rôle important dans la génération du bruit. Selon les caractéristiques de construction de l'aspirateur, et notamment son débit, la section de passage du conduit de sortie d'air doit donc être adaptée, c'est-à-dire être la plus faible possible pour une bonne efficacité, sans toutefois être trop faible, afin d'éviter que des vitesses d'air trop élevées consécutives à cette diminution de section génèrent du bruit.It is known that air velocity plays an important role in the generation of noise. Depending on the construction characteristics of the vacuum cleaner, and in particular its flow rate, the passage section of the air outlet duct must therefore be adapted, that is to say be as low as possible for good efficiency, without however to be too weak, in order to avoid that too high air speeds resulting from this reduction of section generate noise.

Par exemple, pour des débits de l'ordre de 28 I/sec, on choisira un diamètre de l'ordre de 35 mm pour le conduit de sortie d'air, soit une section d'environ 10 cm2.For example, for flow rates of the order of 28 I / sec, we choose a diameter of about 35 mm for the air outlet duct, a section of about 10 cm 2 .

Afin d'optimiser l'efficacité du dispositif, le conduit de sortie d'air de l'aspirateur est précédé d'une chambre d'expansion dont la surface de passage de l'air est au moins 10 fois supérieure à la surface de passage de l'air dans le conduit de sortie d'air.In order to optimize the efficiency of the device, the air outlet duct of the vacuum cleaner is preceded by an expansion chamber whose air passage surface is at least 10 times greater than the passage surface. air in the air outlet duct.

Avantageusement, la section du conduit est constante, permettant de garder le flux laminaire. L'absence de marche ou de rupture brusque de section évite les décollements des lames d'air qui peuvent être source de tourbillons et donc de bruit.Advantageously, the duct section is constant, to keep the laminar flow. The absence of a step or abrupt section break avoids the detachment of the air knives that can be source of swirls and therefore noise.

Avantageusement, le flux d'air entrant dans le conduit de sortie d'air est guidé, afin que la canalisation du flux soit progressive et douce. Ainsi, l'entrée du conduit de sortie d'air est évasée en présentant une ou plusieurs courbures dont le rayon est supérieur à 15 mm.Advantageously, the flow of air entering the air outlet duct is guided, so that the channelization of the flow is gradual and soft. Thus, the inlet of the air outlet duct is flared by having one or more curvatures whose radius is greater than 15 mm.

Afin d'améliorer l'efficacité du conduit de sortie d'air, la partie du bâti délimitant la cavité comporte un garnissage intérieur d'un matériau absorbant de type mousse.In order to improve the efficiency of the air outlet duct, the portion of the frame defining the cavity comprises an inner lining of a foam-type absorbent material.

Cette efficacité est améliorée en disposant le matériau absorbant entre la partie du bâti et une structure interne rigide, ce qui permet, en plus d'éviter toute vibration, d'augmenter globalement l'épaisseur de paroi du dispositif, limitant ainsi la transparence des parois.This efficiency is improved by arranging the absorbent material between the part of the frame and a rigid internal structure, which makes it possible, in addition to avoiding any vibration, to increase overall the wall thickness of the device, thus limiting the transparency of the walls. .

Dans le but de limiter les ruptures de parois la partie de bâti délimitant la cavité est de forme sensiblement concave. La forme concave, vue par rapport au trajet du flux d'air, permet d'éviter audit flux des chocs frontaux par rapport aux parois délimitant la cavité, ce qui limite les effets de résonance.In order to limit the ruptures of walls the frame portion delimiting the cavity is of substantially concave shape. The concave shape, seen with respect to the path of the air flow, makes it possible to avoid frontal shocks to said flow with respect to the walls delimiting the cavity, which limits the effects of resonance.

Avantageusement, l'embouchure extérieure de sortie d'air du conduit présente une arête dont le rayon de courbure est inférieur à 2 mm.Advantageously, the outer air outlet mouth of the duct has an edge whose radius of curvature is less than 2 mm.

De nombreux essais ont permis de mettre en évidence l'importance de la sortie d'air du conduit du dispositif, et notamment la présence d'une arête présentant un rayon de courbure le plus faible possible.Numerous tests have made it possible to highlight the importance of the air outlet of the duct of the device, and in particular the presence of an edge having a smallest radius of curvature possible.

De plus, l'architecture de l'aspirateur est étudiée pour que la sortie d'air du moteur soit sensiblement disposée dans le prolongement du conduit de sortie d'air de l'aspirateur.In addition, the architecture of the vacuum cleaner is designed so that the air outlet of the motor is substantially disposed in the extension of the air outlet duct of the vacuum cleaner.

D'autres caractéristiques et avantages de l'invention vont être donnés par la description qui va suivre, en regard des figures annexées qui ne constituent que des exemples non limitatifs de réalisation.

  • La figure 1 est une vue de dessus en perspective d'un aspirateur pourvu de la présente invention.
  • La figure 2 est une vue de dessous en perspective de l'aspirateur sans le corps inférieur.
  • La figure 3 est une vue en coupe longitudinale de l'aspirateur selon la figure 2.
  • La figure 4 est un détail en perspective d'un élément de l'aspirateur.
  • La figure 5 est une vue éclatée, en perspective, du moteur de l'aspirateur et de son carénage équipé de la présente invention.
  • La figure 6 est une vue éclatée de dessous de l'objet de l'invention.
  • La figure 7 est une vue éclatée de profil de l'invention.
  • La figure 8 est une vue de dessus de l'objet de l'invention
  • Les figures 9 et 10 sont des vues en coupe, respectivement selon A-A et B-B de la figure 8.
  • La figure 11 est un détail d'une partie de la figure 10.
  • La figure 12 est une vue de face d'un élément présent dans un mode de réalisation de la présente invention.
  • Les figures 13 à 16 présentent une variante de réalisation du dispositif d'atténuation du bruit, les figures 13 et 14 étant des vues éclatées selon deux perspectives différentes, tandis que la figure 15 est une vue de face, et la figure 16 est une vue en coupe selon l'axe A-A de la figure 15.
Other characteristics and advantages of the invention will be given by the description which follows, with reference to the appended figures which constitute only non-limiting examples of embodiment.
  • The figure 1 is a perspective top view of a vacuum cleaner provided with the present invention.
  • The figure 2 is a perspective bottom view of the vacuum cleaner without the lower body.
  • The figure 3 is a longitudinal sectional view of the vacuum cleaner according to the figure 2 .
  • The figure 4 is a perspective detail of an element of the vacuum cleaner.
  • The figure 5 is an exploded perspective view of the motor of the vacuum cleaner and its fairing equipped with the present invention.
  • The figure 6 is an exploded view from below of the object of the invention.
  • The figure 7 is an exploded view of the invention.
  • The figure 8 is a top view of the object of the invention
  • The Figures 9 and 10 are sectional views, respectively according to AA and BB of the figure 8 .
  • The figure 11 is a detail of some of the figure 10 .
  • The figure 12 is a front view of an element present in an embodiment of the present invention.
  • The Figures 13 to 16 present an alternative embodiment of the noise attenuation device, the Figures 13 and 14 being exploded views from two different perspectives, while the figure 15 is a front view, and the figure 16 is a sectional view along the axis AA of the figure 15 .

Tel que représenté notamment aux figures 1 à 3, l'aspirateur 1 est constitué d'un corps d'aspirateur composé d'un corps inférieur 2, d'un corps supérieur 4, d'un couvercle 6 fermant le logement 8 d'un sac d'aspirateur. Le logement 8 comporte, sur sa face arrière, des ouvertures de communication aéraulique avec le compartiment moteur.As represented in particular Figures 1 to 3 , the vacuum cleaner 1 consists of a vacuum cleaner body consisting of a lower body 2, an upper body 4, a lid 6 closing the housing 8 of a vacuum bag. The housing 8 comprises, on its rear face, airflow communication openings with the engine compartment.

Le couvercle 6 porte également le raccord 10 permettant la liaison entre une tubulure d'aspiration et le logement du sac de filtration de l'air et de stockage des déchets aspirés. La partie arrondie à l'avant du corps supérieur est configurée en une poignée 11.The lid 6 also carries the connector 10 allowing the connection between a suction pipe and the housing of the air filtration bag and storage of the vacuumed waste. The rounded portion at the front of the upper body is configured as a handle 11.

Sur le corps supérieur 4 sont également agencés des organes 12, 14 et 16 commandant respectivement la mise en route et l'arrêt du moteur, le rembobinage du cordon électrique, et la puissance du moteur. L'échappement d'air du moteur est réalisé au travers du sous-ensemble 300 disposé à l'arrière de l'appareil, sur le corps supérieur 4.On the upper body 4 are also arranged organs 12, 14 and 16 respectively controlling the start and stop of the motor, the rewinding of the power cord, and the power of the engine. The air exhaust of the engine is achieved through the subassembly 300 disposed at the rear of the apparatus, on the upper body 4.

Le moteur 20 de l'aspirateur est disposé dans un carénage 22 en liaison avec une ouverture de sortie d'air du logement 8 du sac.The motor 20 of the vacuum cleaner is disposed in a shroud 22 in connection with an air outlet opening of the housing 8 of the bag.

La figure 5 montre plus précisément la structure de la zone moteur, dans une vue éclatée. Le moteur 20 est ainsi disposé dans un carénage 22 comprenant une partie amont 202 couvrant l'entrée d'air du moteur, réalisée au travers d'ouvertures 203 de la partie haute 202, et une partie aval 210 couvrant la sortie d'air du moteur. Le carénage entoure donc complètement le moteur et permet ainsi de réduire le bruit par le confinement ainsi généré.The figure 5 shows more precisely the structure of the engine zone, in an exploded view. The motor 20 is thus disposed in a shroud 22 comprising an upstream portion 202 covering the engine air inlet, made through openings 203 of the upper part 202, and a downstream part 210 covering the air outlet of the engine. The fairing thus completely surrounds the engine and thus reduces the noise by the confinement thus generated.

Un joint 216 permet l'étanchéité d'entrée d'air du moteur à l'intérieur du carénage, tandis qu'un joint 218 permet d'étanchéifier la liaison aéraulique entre le compartiment 8 contenant le sac à déchets, et la zone moteur.A seal 216 makes it possible to seal the air inlet of the engine inside the fairing, while a seal 218 makes it possible to seal the ventilation link between the compartment 8 containing the garbage bag and the motor zone.

De plus, un joint 214 assure l'étanchéité entre les deux parties du carénage.In addition, a seal 214 seals between the two parts of the fairing.

Par ailleurs, la partie basse 210 du carénage est percée d'une multitude d'ouvertures 212 permettant à l'air de sortir du carénage. Face à ces ouvertures est disposé un élément absorbant 230, telle une mousse. Cette mousse est disposée sur sensiblement tout le trajet de l'air depuis la sortie du carénage jusqu'à la sortie du bâti de l'aspirateur, cette sortie étant précédée d'un passage au travers d'un filtre 240, de type HEPA et du sous-ensemble 300.Moreover, the lower part 210 of the fairing is pierced with a multitude openings 212 allowing the air out of the fairing. Faced with these openings is an absorbent member 230, such as a foam. This foam is disposed over substantially the entire path of the air from the fairing outlet to the outlet of the frame of the vacuum cleaner, this outlet being preceded by a passage through a filter 240, HEPA type and of the subassembly 300.

Avantageusement, et tel que le montrent les figures 3 et 5, le carénage inférieur 210 du moteur, ainsi que la mousse 230 et le filtre HEPA 240 sont disposés dans un support 220 venant se fixer sur le carénage supérieur 202, ledit support constituant ainsi un second carénage, qui, par la paroi présentée, permet de réduire davantage le bruit perçu à l'extérieur de l'appareil.Advantageously, and as shown by figures 3 and 5 , the lower fairing 210 of the engine, as well as the foam 230 and the HEPA filter 240 are arranged in a support 220 which is fixed on the upper fairing 202, said support thus constituting a second fairing, which, by the presented wall, makes it possible to further reduce perceived noise outside the device.

Les ouvertures 212 représentent au total une surface d'au moins 10 cm2, en présentant chacune une surface comprise entre 0,75 mm2 et 40 mm2. Ces ouvertures, tel que le montre la figure 4, sont avantageusement disposées selon un réseau et localisées sur les faces arrière et inférieure de la partie basse du carénage, c'est-à-dire à l'opposé de l'ouverture de sortie d'air du bâti de l'appareil.The openings 212 total a surface area of at least 10 cm 2 , each having an area of between 0.75 mm 2 and 40 mm 2 . These openings, as shown in figure 4 , are advantageously arranged in a network and located on the rear and bottom faces of the lower part of the fairing, that is to say opposite to the air outlet opening of the frame of the apparatus.

Selon l'invention, l'aspirateur comporte un dispositif 300 d'atténuation du bruit de sortie d'air de l'aspirateur, comportant un carénage extérieur 310, une mousse intérieure 320, ainsi qu'un profil intérieur 330.According to the invention, the vacuum cleaner comprises a device 300 for attenuating the air outlet noise of the vacuum cleaner, comprising an outer fairing 310, an inner foam 320, and an inner profile 330.

Tel qu'il est bien visible sur les figures 6, 7 et 9, les trois pièces 310, 320, 330 sont de forme générale concave.As it is clearly visible on Figures 6, 7 and 9 the three parts 310, 320, 330 are generally concave.

Le carénage 310 comporte des clips 312 coopérant avec une partie du boîtier supérieur 4 pour son maintien à l'aspirateur.The shroud 310 includes clips 312 cooperating with a portion of the upper housing 4 for its maintenance vacuum.

Le dispositif 300 d'atténuation du bruit comporte un conduit central 350 débouchant à l'extérieur de l'aspirateur par une ouverture 340 et défini par la réunion des pièces 310 et 330. Ainsi, le carénage 310 comporte une portion de conduit 314 à l'extrémité de laquelle sont ménagées des pattes de maintien 316, au nombre de six pour l'exemple de réalisation présenté.The noise attenuation device 300 comprises a central duct 350 opening out of the aspirator through an opening 340 and defined by the joining of the parts 310 and 330. Thus, the fairing 310 comprises a portion of the duct 314 to the duct 314. end of which are provided retaining lugs 316, six in number for the embodiment shown.

Par ailleurs, le carénage 310 présente une forme en dôme 318 au niveau du conduit, renforçant sa tenue mécanique.Furthermore, the fairing 310 has a dome shape 318 at the duct, reinforcing its mechanical strength.

Le profil intérieur 330 présente, quant à lui, une portion de conduit 332 comportant deux conduits annulaires : un conduit 3320 coopérant avec la portion de conduit 314, ainsi qu'un conduit 3322 de plus grand diamètre que le conduit 3320, ces deux conduits étant reliés l'un à l'autre par une portion incurvée et évasée 334 définissant l'entrée du conduit 350 de sortie d'air.The inner profile 330 has, for its part, a duct portion 332 comprising two annular ducts: a duct 3320 cooperating with the duct portion 314, and a duct 3322 of larger diameter than the duct 3320, these two ducts being connected to each other by a curved and flared portion 334 defining the inlet of the outlet duct 350.

Par ailleurs, le conduit 3320 présente un décrochement extérieur pour l'ajustement des pattes de maintien 316.Furthermore, the conduit 3320 has an external recess for adjusting the retaining lugs 316.

Le profil intérieur 330 comporte des crochets 336 de maintien, coopérant avec des méplats ménagés dans la pièce 310 (non représentés).The inner profile 330 includes holding hooks 336, cooperating with flats in the piece 310 (not shown).

La pièce intermédiaire 320 est un matériau absorbant, telle une mousse, dont la forme est la plus proche de l'enveloppe intérieure du carénage extérieur 310, en ménageant donc une ouverture centrale ainsi qu'un dôme 322, afin que son effet d'atténuation du bruit soit le plus efficace possible, en limitant les zones non couvertes.The intermediate piece 320 is an absorbent material, such as a foam, whose shape is closest to the inner envelope of the outer fairing 310, thus providing a central opening and a dome 322, so that its attenuation effect Noise is as effective as possible by limiting uncovered areas.

Les figures 9 et 10 montrent le dispositif 300 d'atténuation du bruit lorsque les trois pièces 310, 320 et 330 sont montées.The Figures 9 and 10 show the device 300 noise attenuation when the three parts 310, 320 and 330 are mounted.

Ainsi, la mousse 320 est plaquée contre la surface intérieure du carénage extérieur 310 par le profil intérieur 330 qui vient se verrouiller sur la pièce 310 par l'intermédiaire des crochets 336. Afin de bien plaquer la mousse contre la pièce 310, le profil intérieur 330 présente une architecture similaire à l'enveloppe intérieure de la pièce 310, conduisant à la réalisation du double conduit annulaire 3320, 3322 tel que précédemment expliqué.Thus, the foam 320 is pressed against the inner surface of the outer fairing 310 by the inner profile 330 which is locked on the workpiece 310 by means of the hooks 336. In order to press the foam against the workpiece 310, the internal profile 330 has an architecture similar to the inner envelope of the part 310, leading to the realization of the double annular conduit 3320, 3322 as previously explained.

Lors du montage des trois pièces, les pattes de maintien 316 viennent se positionner sur la marche extérieure du conduit 3320, permettant ainsi au conduit 350 ainsi formé de présenter une surface interne lisse, sans rupture de section, ce qui évite de générer du bruit.During assembly of the three parts, the retaining lugs 316 are positioned on the outer step of the duct 3320, thus allowing the duct 350 thus formed to have a smooth internal surface, without breaking the section, which avoids generating noise.

Selon l'exemple proposé, le rayon de courbure de la forme évasée 334 d'entrée d'air dans le conduit 350 est de l'ordre de 20 mm. La hauteur du conduit est d'environ 45 mm, comprenant une portion droite de hauteur h voisine de 35 mm, ainsi qu'une portion incurvée 334. Le diamètre d de la portion droite est d'environ 35 mm.According to the proposed example, the radius of curvature of the flared form 334 of air inlet in the duct 350 is of the order of 20 mm. The height of the duct is approximately 45 mm, comprising a straight portion of height h close to 35 mm, and a curved portion 334. The diameter d of the straight portion is approximately 35 mm.

La figure 11 présente, en détail, la sortie d'air du conduit 350. Selon cette figure, le conduit comporte une arête 352 présentant un rayon de courbure le plus faible possible compte tenu des moyens mis en oeuvre pour la réalisation de cette pièce. Selon un mode de réalisation avantageux par moulage plastique, le rayon de courbure r est de l'ordre de 1,5 mm.The figure 11 presents, in detail, the air outlet of the duct 350. According to this figure, the duct comprises an edge 352 having a radius of curvature as low as possible given the means used for producing this part. According to an advantageous embodiment by plastic molding, the radius of curvature r is of the order of 1.5 mm.

Le dispositif 300 d'atténuation du bruit de sortie d'air est donc disposé sur une partie sensiblement plane du corps supérieur 4, immédiatement au dessus du filtre 240, ménageant ainsi une cavité 302 d'expansion de l'air.The device 300 for attenuating the air outlet noise is thus disposed on a substantially flat portion of the upper body 4, immediately above the filter 240, thereby providing an air expansion cavity 302.

Le volume de cette cavité est d'environ 700 cm3, alors que le volume du conduit 350 est de l'ordre de 30 cm3.The volume of this cavity is about 700 cm 3 , while the volume of the duct 350 is of the order of 30 cm 3 .

En fonctionnement, lorsque le moteur est mis en marche, une circulation d'air s'impose dans le circuit aéraulique d'aspiration. L'air, après avoir traversé le sac filtrant puis le moteur, sort de ce dernier selon les flèches indiquées figure 3. Il sort ensuite du carénage par les ouvertures 212 qui permettent une répartition plus homogène des flux d'air en sortie de ce carénage, contribuant ainsi à la diminution du bruit aéraulique. Le flux d'air longe l'élément absorbant 230 pour ensuite entrer dans le dispositif d'atténuation du bruit 300 après être passé au travers du filtre 220.In operation, when the engine is started, an air circulation is required in the air suction circuit. The air, after passing through the filter bag and then the motor, comes out of the latter according to the arrows indicated figure 3 . It then leaves the fairing through the openings 212 which allow a more homogeneous distribution of the air flows at the outlet of this fairing, thus contributing to the reduction of ventilation noise. The airflow runs along the absorbent member 230 and then enters the noise attenuation device 300 after passing through the filter 220.

L'entrée dans le dispositif 300 d'atténuation du bruit comporte une détente de l'air dans la partie inférieure de la cavité 302, constituant une chambre d'expansion 303 matérialisée en pointillés sur la figure 9. La différence importante de volume entre la cavité 302 et le conduit 350 permet de créer, par la cavité 302, un véritable tampon aéraulique. L'insertion du conduit 350 dans la cavité, sur une hauteur j voisine de 30 mm, soit environ sur les 2/3 de la hauteur totale du conduit, qui correspond également sensiblement aux 2/3 de la hauteur de la cavité 302, est le résultat de nombreux essais pour trouver un bon compromis entre l'encombrement du dispositif et son efficacité.The entry into the noise attenuation device 300 comprises an expansion of the air in the lower part of the cavity 302, constituting an expansion chamber 303 marked in dashed lines on the figure 9 . The large difference in volume between the cavity 302 and the duct 350 makes it possible to create, through the cavity 302, a real aeraulic buffer. The insertion of the duct 350 into the cavity, on a height j close to 30 mm, or about 2/3 of the total height of the duct, which also corresponds substantially to 2/3 of the height of the cavity 302, is the result of many attempts to find a good compromise between the size of the device and its effectiveness.

L'air s'échappe ensuite de cette chambre, en un flux doux, essentiellement laminaire et silencieux, par le conduit 350, le passage dans ce conduit étant fluidifié par la courbure 334 donnée à l'entrée du conduit 350. La surface de passage dans la chambre d'expansion 303 est au moins 10 fois la surface de passage dans le conduit 350. Ces changements de section contribuent fortement à l'effet d'atténuation du bruit.The air then escapes from this chamber, in a soft flow, essentially laminar and silent, through the duct 350, the passage in this duct being fluidized by the curvature 334 given to the inlet of the duct 350. The passage surface in the expansion chamber 303 is at least 10 times the passage area in the conduit 350. These section changes contribute greatly to the noise attenuation effect.

Tel qu'il est bien visible figure 3, la sortie d'air du moteur est sensiblement alignée avec le conduit de sortie d'air 350, évitant ainsi les zones de turbulence, tout en réduisant la longueur des conduits ainsi que le nombre de raccords. Cet alignement est propice à l'obtention d'un flux laminaire ou du moins à un flux présentant un minimum de turbulences.As it is clearly visible figure 3 , the air outlet of the engine is substantially aligned with the air outlet duct 350, thus avoiding the turbulence zones, while reducing the length of the ducts and the number of connections. This alignment is conducive to obtaining a laminar flow or at least a flow having a minimum of turbulence.

Afin toutefois d'éviter que l'utilisateur, ou ses proches, notamment les enfants, puissent introduire des objets par l'ouverture 340, il peut être prévu de disposer une grille 400 dans le conduit 350, insérée par exemple au niveau de la réunion des conduits 314 et 3320, en ménageant des ouvertures 402 coopérant avec les pattes de maintien 316. Une telle grille devra rester acoustiquement inopérante, n'apportant qu'une fonction mécanique de rétention d'objet provenant de l'extérieur de l'aspirateur. Le type de matériau, la structure de la grille et le maillage seront donc étudiés dans ce sens.However, in order to prevent the user, or his family, especially children, from introducing objects through the opening 340, provision may be made to provide a grid 400 in the duct 350, inserted for example at the level of the meeting. ducts 314 and 3320, providing openings 402 cooperating with the retaining lugs 316. Such a grid must remain acoustically inoperative, providing only a mechanical object retention function from outside the vacuum cleaner. The type of material, the structure of the grid and the mesh will be studied in this sense.

Un tel dispositif d'atténuation du bruit de sortie d'air est avantageusement utilisé en complément de moyens déployés pour limiter d'autres sources de bruit, par exemple l'utilisation d'un carénage spécifique du moteur, de mousses présentes sur le trajet aéraulique,... Une augmentation des épaisseurs de paroi des pièces proches du trajet aéraulique peut également être envisagée pour limiter la transparence des parois afin que la majorité du bruit soit véhiculée par les voies aérauliques pour utiliser au mieux le dispositif présenté.Such an air output noise attenuation device is advantageously used in addition to means deployed to limit other sources of noise, for example the use of a specific fairing of the motor, of foams present on the air flow path An increase in the wall thicknesses of the rooms close to the aeraulic path may also be envisaged to limit the transparency of the walls so that the majority of the noise is conveyed by the aeraulic channels in order to make the best use of the device presented.

Des variantes de réalisation peuvent être envisagées sans sortir du cadre de l'invention.Alternative embodiments may be envisaged without departing from the scope of the invention.

Les figures 13 à 16 montrent notamment une autre forme possible du dispositif d'atténuation du bruit en sortie d'air du bâti de l'aspirateur.The Figures 13 to 16 show in particular another possible form of noise attenuation device at the air outlet of the frame of the vacuum cleaner.

Ainsi, selon cette variante de réalisation, le dispositif 500 d'atténuation du bruit garde une forme généralement concave, tel le dispositif 300 précédemment évoqué et présente ainsi un carénage extérieur 510 et un profil intérieur 530 venant se verrouiller l'un sur l'autre par des crochets 516, à l'instar du dispositif 300. La différence fondamentale est relative à l'ouverture de sortie d'air du bâti, définie par un conduit 550 en forme de U évasé ou de sourire, tel que mieux visible sur la figure 15. Cette ouverture 540 de sortie d'air du bâti est donc dépourvue de dispositif de filtration, tel que le montre la figure 15, seule une petite traverse, composée d'une partie 542 issue du carénage 510 et d'une partie 534 issue du profil intérieur 530, relie les deux bords du conduit 550 en sa partie médiane, permettant de rigidifier la structure. Cette traverse reste toutefois très discrète et n'influe que très peu sur l'écoulement du flux d'air en sortie.Thus, according to this variant embodiment, the noise attenuation device 500 retains a generally concave shape, such as the device 300 previously mentioned, and thus has an outer fairing 510 and an inner profile 530 that locks on top of one another. by hooks 516, like the device 300. The fundamental difference is relative to the air outlet opening of the frame, defined by a conduit 550 flared U-shape or smile, as best seen on the figure 15 . This air outlet opening 540 of the frame is therefore devoid of filtration device, as shown in FIG. figure 15 , only a small crossbar, composed of a portion 542 from the shroud 510 and a portion 534 from the inner profile 530, connects the two edges of the conduit 550 in its middle part, to stiffen the structure. This crossbar, however, remains very discreet and affects only very little on the flow of the air flow output.

Par ailleurs, bien qu'il n'ait pas été présenté, dans le dispositif 500, de mousse intérieure, ni de grille, tels les éléments 320 et 400 du dispositif 300, leur présence peut être nécessaire pour améliorer et protéger le dispositif, de la même manière que pour le dispositif 300. Leur agencement est sensiblement identique à celui décrit pour le dispositif 300.On the other hand, although there has not been presented in the device 500 with internal foam or grid, such as the elements 320 and 400 of the device 300, their presence may be necessary to improve and protect the device. in the same manner as for the device 300. Their arrangement is substantially identical to that described for the device 300.

La vue en coupe du dispositif 500, présentée figure 16, montre que le conduit 550 présente une structure analogue à celle du conduit 350, deux portions de conduit 532 et 514, portées respectivement par le profil intérieur 530 et le carénage 510, permettent, par des marches extérieures réalisées sur les deux portions de conduit 532 et 514, d'obtenir une surface interne lisse pour le conduit 550, sans variation brusque de section. Par ailleurs, la portion basse du conduit 532 présente également une partie incurvée et évasée 534 présentant une courbure dont le rayon est supérieur à 15 mm.The sectional view of device 500, presented figure 16 , shows that the duct 550 has a structure similar to that of the duct 350, two duct portions 532 and 514, respectively carried by the inner profile 530 and the fairing 510, allow, by external steps made on the two duct portions 532 and 514, to obtain a smooth inner surface for the duct 550, without abrupt section variation. Furthermore, the lower portion of the duct 532 also has a curved and flared portion 534 having a curvature whose radius is greater than 15 mm.

Selon cette variante, la hauteur du conduit est de l'ordre de 35 mm, comprenant une portion de section constante, de hauteur m voisine de 30 mm. La longueur q du conduit est de l'ordre de 200 mm, pour une largeur r voisine de 13 mm, de sorte que la section de passage d'air en sortie d'aspirateur est de l'ordre de 26 cm2. Par rapport au dispositif 300, où le conduit 350 présente un diamètre d de 35 mm, soit une section de passage de 6,6 cm2, cette valeur, bien supérieure, permet de réduire les vitesses d'air en sortie d'aspirateur, ce qui réduit l'effet de souffle d'air qui peut être gênant pour l'utilisateur lorsque les vitesses d'air sont élevées. Cette réduction de vitesse est également propice à une réduction du bruit aéraulique. De préférence, la section de passage de l'air du conduit 550 est comprise entre 20 et 30 cm2.According to this variant, the height of the duct is of the order of 35 mm, comprising a portion of constant section, height m close to 30 mm. The length q of the duct is of the order of 200 mm, for a neighboring width r 13 mm, so that the air passage section at the vacuum outlet is of the order of 26 cm 2 . With respect to the device 300, where the duct 350 has a diameter d of 35 mm, or a passage section of 6.6 cm 2 , this value, much higher, makes it possible to reduce the air velocities at the outlet of the vacuum cleaner, which reduces the effect of air blast which can be annoying for the user when the air speeds are high. This reduction in speed is also conducive to a reduction of the ventilation noise. Preferably, the air passage section of the duct 550 is between 20 and 30 cm 2 .

Le dispositif 500 d'atténuation du bruit comporte également une cavité 502 d'expansion de l'air, de volume légèrement moins important que le volume de la cavité 302 du dispositif 300, mais la différence entre ce volume et le volume du conduit reste suffisamment importante pour que cette cavité 502 conserve des propriétés de tampon aéraulique tel que précédemment mentionné.The noise attenuation device 500 also comprises an air expansion cavity 502, whose volume is slightly less than the volume of the cavity 302 of the device 300, but the difference between this volume and the volume of the duct remains sufficiently important for this cavity 502 retains airflow buffer properties as previously mentioned.

Par ailleurs, d'autres types d'absorbant peuvent être utilisés, que ce soit au niveau de la matière, la densité, ou la structure. L'association de cavités résonantes, de types résonateurs de Helmholtz ou microperforations sont également envisageables, en association avec le dispositif présenté ou sa variante de réalisation.On the other hand, other types of absorbent can be used, be it in matter, density, or structure. The combination of resonant cavities, Helmholtz resonator types or microperforations can also be envisaged, in association with the device presented or its variant embodiment.

Claims (12)

  1. A vacuum cleaner (1) comprising a housing, wherein is situated an electric motor (20) associated with a fan that, while the vacuum cleaner operates, allows the creation of air suction from a manifold, upstream from the motor (20) and ending in a sucker, up to an output of air (340) from the housing situated downstream from the motor (20), with a filtration device arranged on the air-flow path, preferably upstream from the motor (20), and a noise attenuation device (300, 500) arranged downstream from the motor (20), said noise attenuation device (300, 500) comprising a cavity (302, 502) that includes in the central part a substantially vertical air outlet pipe (350, 550) of the vacuum cleaner (1), characterised in that the cavity (302, 502) is delimited by a portion (310, 330, 510, 530) of the housing and in that the pipe (350, 550) projects outside the vacuum cleaner (1) by one of its ends, its other end being arranged inside the cavity (302, 502), said pipe (350, 550) being free from air filtration or deflection units.
  2. A vacuum cleaner (1) according to the preceding claim, characterised in that the air outlet pipe (350, 550) is straight and the length (h) thereof is more than 30 mm.
  3. A vacuum cleaner (1) according to one of the preceding claims, characterised in that the air outlet pipe (350) is tubular with a diameter (d) between 20 and 55 mm.
  4. A vacuum cleaner (1) according to one of claims 1 or 2, characterised in that the pipe (550) is in the form of a flared U and has an air passage section between 20 and 30 cm2.
  5. A vacuum cleaner (1) according to one of claims 1 to 3, characterised in that the air outlet pipe (350) of the vacuum cleaner (1) is preceded by an expansion chamber (303) whose air passage area is at least 10 times greater than the air passage area inside the air outlet pipe (350).
  6. A vacuum cleaner (1) according to one of the preceding claims, characterised in that the cross-section of the pipe (350, 550) is constant.
  7. A vacuum cleaner (1) according to one of the preceding claims, characterised in that the inlet of the air outlet pipe (350, 550) is flared with one or more bends (334, 534) having a radius of more than 15 mm.
  8. A vacuum cleaner (1) according to one of the preceding claims, characterised in that the portion (310, 510) of the housing delimiting the cavity (302, 502) has an internal lining made of an absorbent material (320) such as foam.
  9. A vacuum cleaner (1) according to the preceding claim, characterised in that the absorbent material (320) is arranged between the portion (310, 510) of the housing and a rigid internal structure (330, 530).
  10. A vacuum cleaner (1) according to one of the preceding claims, characterised in that the portion (310, 510) of the housing delimiting the cavity (302, 502) is substantially concave in shape.
  11. A vacuum cleaner (1) according to one of the preceding claims, characterised in that the external air outlet opening of the pipe (350) has an edge (352) whose bending radius (r) is less than 2 mm.
  12. A vacuum cleaner (1) according to one of the preceding claims, characterised in that the air outlet of the motor (20) is substantially arranged in the extension of the air outlet pipe (350, 550) of the vacuum cleaner (1).
EP07356118A 2006-09-29 2007-09-06 Vacuum cleaner equipped with a noise-attenuation device Active EP1905334B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07356118T PL1905334T3 (en) 2006-09-29 2007-09-06 Vacuum cleaner equipped with a noise-attenuation device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0608574A FR2906449B1 (en) 2006-09-29 2006-09-29 VACUUM EQUIPPED WITH A NOISE MITIGATION DEVICE

Publications (2)

Publication Number Publication Date
EP1905334A1 EP1905334A1 (en) 2008-04-02
EP1905334B1 true EP1905334B1 (en) 2010-11-24

Family

ID=37951860

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07356118A Active EP1905334B1 (en) 2006-09-29 2007-09-06 Vacuum cleaner equipped with a noise-attenuation device

Country Status (9)

Country Link
EP (1) EP1905334B1 (en)
CN (1) CN101152065B (en)
AT (1) ATE489025T1 (en)
DE (1) DE602007010707D1 (en)
ES (1) ES2355944T3 (en)
FR (1) FR2906449B1 (en)
PL (1) PL1905334T3 (en)
PT (1) PT1905334E (en)
RU (1) RU2415635C2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2967882B1 (en) 2010-11-25 2013-08-23 Seb Sa PRINCIPAL VACUUM BODY
CN102648834A (en) * 2011-02-24 2012-08-29 苏州韩京姬科技有限公司 Sweeper
CN105640431B (en) * 2016-03-21 2018-03-27 江苏美的清洁电器股份有限公司 The ducting system and dust catcher of dust catcher
FR3120296B1 (en) * 2021-03-08 2023-02-10 Seb Sa Household vacuum cleaner equipped with a sound attenuation cavity
WO2023182924A1 (en) * 2022-03-21 2023-09-28 Lionsbot International Pte. Ltd. Noise suppressed vacuum motor assembly

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2330701A (en) * 1939-12-07 1943-09-28 Hoover Co Suction cleaner
US2555742A (en) * 1949-04-08 1951-06-05 Finn E Grue Suction cleaner device
US4015683A (en) 1975-12-29 1977-04-05 Purex Corporation Ltd. Noise suppressor for vacuum sweeper and the like
US4418443A (en) * 1981-12-07 1983-12-06 Breuer Electric Mfg. Co. Noise suppressor for vacuum sweepers and the like
JPH01305916A (en) * 1988-06-06 1989-12-11 Hitachi Ltd Electric cleaner
JP2001087178A (en) * 1999-09-20 2001-04-03 Mitsubishi Electric Corp Suction tool for vacuum cleaner
JP4419253B2 (en) * 2000-02-23 2010-02-24 パナソニック株式会社 Vacuum cleaner
CN100358458C (en) * 2003-09-28 2008-01-02 乐金电子(天津)电器有限公司 Structure for reducing notice in vacuum cleaner
KR100554238B1 (en) * 2004-11-15 2006-02-22 삼성광주전자 주식회사 A cyclone dust-separating apparatus

Also Published As

Publication number Publication date
ES2355944T3 (en) 2011-04-01
CN101152065A (en) 2008-04-02
PL1905334T3 (en) 2011-04-29
DE602007010707D1 (en) 2011-01-05
PT1905334E (en) 2011-03-01
ATE489025T1 (en) 2010-12-15
FR2906449A1 (en) 2008-04-04
RU2415635C2 (en) 2011-04-10
CN101152065B (en) 2011-11-30
EP1905334A1 (en) 2008-04-02
RU2007136059A (en) 2009-04-10
FR2906449B1 (en) 2008-11-07

Similar Documents

Publication Publication Date Title
EP1905334B1 (en) Vacuum cleaner equipped with a noise-attenuation device
EP2237700B1 (en) Silencer for drying appliance and quiet hairdryer
EP0996355A1 (en) Vacuum cleaner with tangential separation of trash
FR2877560A1 (en) MOTOR ASSIST EXHAUST APPARATUS AND VACUUM CLEANER HAVING THE SAME
EP3774429B1 (en) Air flow regulating device for an air inlet of a motor vehicle
EP2032010B1 (en) Vacuum cleaner
FR2776908A1 (en) ELECTRIC WASTE RECOVERY APPARATUS
FR2922610A1 (en) Ventilator for air ventilation system of airplane, has acoustic treatment volumes partially delimited by permeable wall guiding gaseous flow through conduit, where wall has uncorking oblong slits along part of its surface
WO2014114859A1 (en) Respiratory assistance device including a soundproof turbine
EP4056087B1 (en) Domestic vacuum cleaner provided with a cavity for sound attenuation
EP0002402A1 (en) Suction cleaner with double filtration
CA2857278A1 (en) Cyclone-type vacuum cleaner
FR2979814A1 (en) Vacuum cleaner has motor fan, which sucks air flow and supplies this air to discharge circuit, which has channel with longitudinally extended neckings with constant air flow-passage cross section
BE1029481B1 (en) Air cleaning device
EP4385377A1 (en) Suction device for a domestic vacuum cleaner
EP4385376A1 (en) Suction device for a domestic vacuum cleaner
EP1981386B1 (en) Vacuum cleaner having two expanded polypropylene shells
WO2000048501A1 (en) Complementary component for a vacuum cleaner nozzle base plate
FR2896680A1 (en) VACUUM
FR3110437A1 (en) Breathing assistance device
FR2871872A1 (en) Ventilation duct for ventilation and/or air-conditioning system of e.g. motor vehicle, has noise attenuation unit with acoustic cavity formed by enlargement, of passage section of fluid flow path, with upstream and downstream transitions
KR101313834B1 (en) Vacuum cleaner
FR2811535A1 (en) Vacuum cleaner has plenum chamber in motor exhaust duct to reduce operating noise
BE540710A (en)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

17P Request for examination filed

Effective date: 20080904

17Q First examination report despatched

Effective date: 20081010

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 602007010707

Country of ref document: DE

Date of ref document: 20110105

Kind code of ref document: P

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20110221

REG Reference to a national code

Ref country code: NL

Ref legal event code: T3

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2355944

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20110401

LTIE Lt: invalidation of european patent or patent extension

Effective date: 20101124

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101124

REG Reference to a national code

Ref country code: PL

Ref legal event code: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101124

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110324

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110224

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101124

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101124

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101124

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101124

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110225

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101124

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101124

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101124

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101124

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101124

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101124

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20110825

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602007010707

Country of ref document: DE

Effective date: 20110825

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110930

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110930

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101124

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110906

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101124

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20140916

Year of fee payment: 8

Ref country code: TR

Payment date: 20140825

Year of fee payment: 8

Ref country code: PL

Payment date: 20140818

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PT

Payment date: 20140306

Year of fee payment: 8

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 9

REG Reference to a national code

Ref country code: PT

Ref legal event code: MM4A

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 20160307

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150907

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160307

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20160812

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20160927

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150906

REG Reference to a national code

Ref country code: FR

Ref legal event code: CA

Effective date: 20170518

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150906

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

REG Reference to a national code

Ref country code: NL

Ref legal event code: MM

Effective date: 20171001

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20170930

Ref country code: BE

Ref legal event code: PD

Owner name: SEB S.A.; FR

Free format text: DETAILS ASSIGNMENT: CHANGE OF OWNER(S), AUTRE, ADRESSE; FORMER OWNER NAME: SEB SA

Effective date: 20161107

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171001

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170930

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20181023

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20190919

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190906

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20210127

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20200906

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190907

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200906

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20230927

Year of fee payment: 17

Ref country code: DE

Payment date: 20230911

Year of fee payment: 17