EP3184011A1 - Geometry of an air-driven circuit for a hand-held vacuum cleaner - Google Patents

Geometry of an air-driven circuit for a hand-held vacuum cleaner Download PDF

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Publication number
EP3184011A1
EP3184011A1 EP16204881.3A EP16204881A EP3184011A1 EP 3184011 A1 EP3184011 A1 EP 3184011A1 EP 16204881 A EP16204881 A EP 16204881A EP 3184011 A1 EP3184011 A1 EP 3184011A1
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EP
European Patent Office
Prior art keywords
duct
air
vacuum cleaner
main
revolution
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EP16204881.3A
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German (de)
French (fr)
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EP3184011B1 (en
Inventor
Donatien Frot
Fabien David
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SEB SA
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SEB SA
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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
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • A47L5/24—Hand-supported suction cleaners
    • 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
    • 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
    • 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
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • 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
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1616—Multiple arrangement thereof
    • 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
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1658—Construction of outlets

Definitions

  • the present invention relates to battery-operated bagless hand vacuums using an electronically commutated motor (ECM) and comprising a cyclonic filter device. More particularly, the invention relates to a particular architecture of an air flow circuit for evacuating an air flow at the outlet of the engine.
  • ECM electronically commutated motor
  • Hand vacuums are already known which comprise a main air intake duct as well as suction means generating a flow of air through the main air intake duct.
  • These vacuum cleaners also comprise a cyclonic dust separation device aeraulically connected to the main suction duct and a secondary evacuation duct which is arranged to evacuate the air flow.
  • Said secondary discharge duct is generally connected aeraulic to the cyclonic dust separation device and is arranged after it.
  • An object of the present invention is to meet the drawbacks mentioned above and to provide an air flow circuit which makes it possible to minimize the pressure drops, to reduce the noise level of the vacuum cleaner, to cool the motor electronics, to direct the flow of air outlet and to guarantee the compactness of the hand-held vacuum cleaner.
  • the secondary duct for evacuating the air flow is extended relative to the existing ducts which directly discharge the air out of the main body. This makes it possible to reduce the speed of the air flow at the outlet of the secondary evacuation duct and thus makes it possible to reduce at least part of the noise. Indeed, as the contact area between the air flow and the secondary evacuation duct is increased, there is more friction of the flow with the walls of the secondary evacuation duct, which has the effect of mechanically decreasing the velocity of the air flow at the output and thus to reduce the noise.
  • the secondary air evacuation duct forms with the external outlet an angle of between 80 and 90 °.
  • the outgoing flow can be oriented so that it is not directed towards the user.
  • the main body comprises at least one main portion and a secondary portion and said main portion comprises a portion which is positioned under said secondary portion and said secondary portion comprises a central cone of revolution along a longitudinal axis. revolution directed towards the interior of the main body and which is positioned at least partly below the portion of the main part.
  • Such a construction makes it possible to manufacture a secondary evacuation duct from the main body and thus to reduce the noise while maintaining the compactness of such a vacuum cleaner because it is not necessary to add a duct annex that would increase the size of such a vacuum cleaner.
  • the main part comprises a first wall and the secondary part comprises a second wall and said first and second walls form the secondary evacuation duct.
  • the hand-held vacuum cleaner comprises a motor which comprises an axis of revolution substantially parallel to the axis of revolution of the central cone of revolution.
  • This characteristic has the effect of having a motor that is oriented in the same direction as the circulating air flow which allows not to interfere with said flow and therefore not to have losses.
  • the cyclonic separation device comprises an axis of revolution which is substantially perpendicular to the axis of revolution of the cone or the engine.
  • This characteristic has the effect of optimizing the compactness of the cyclonic separating device.
  • the external outlet of said secondary discharge duct extends at an angle of between 10 ° and 300 ° around the axis of revolution of the cone.
  • This characteristic has the effect of adapting the size of the external outlet to the quantity of air expelled.
  • the external outlet of said secondary discharge duct forms a surface on the main body of between 5 and 20 cm 2 and preferably 16 cm 2 .
  • the vacuum cleaner comprises a screen at the outlet of the main suction duct so as to divide the flow and to direct a portion of the air flow towards the secondary duct for evacuation of the air and another part to an electronic card so as to cool it.
  • an acoustic foam is positioned in the secondary duct for evacuation of air.
  • This foam has the effect of further reducing the speed of the air flow and thus reduce the noise.
  • a vacuum cleaner 1 hand is composed of a main body 2.
  • This main body 2 comprises at one of its ends a main duct 6 of air intake and at another end a conduit 8 secondary discharge of the air.
  • This secondary exhaust duct 8 comprises an external outlet 9.
  • the main body 2 encloses suction means 7 generating a flow of air through the main suction duct 6. air and the secondary duct 8 for evacuation of air.
  • the air is sucked by the main duct 6 of air intake and is rejected by the secondary duct 8 for discharging the air at the outer outlet 9.
  • an acoustic foam (not shown) can be positioned in the secondary duct 8 air evacuation to further reduce the speed of air and therefore the noise.
  • a handle 5 is attached to the main body 2. It allows a user to manipulate the vacuum cleaner 1 hand. In the embodiment of the invention, it is located under the main body 2 for good handling, but in other embodiments, not shown, it may be positioned elsewhere on the main body 2 .
  • the hand vacuum cleaner 1 further comprises a device 4 cyclonic separation of dust.
  • This can be one or more floors and it aims to separate and filter the dust.
  • This cyclonic separation device 4 is attached to the main body 2. It is located below it so as to be perpendicular and aeraulically connected to the main suction duct 6.
  • the cyclonic separation device 4 is arranged in a revolution around an axis of revolution ⁇ 3.
  • the axis of revolution ⁇ 3 is substantially perpendicular to the main duct 6 suction, as visible in the figure 1 .
  • the cyclonic separation device 4 is in one stage. In another embodiment, not shown, it can be two stages.
  • the suction means 7 are composed of a motor 7.
  • This motor 7 is positioned around and along an axis of revolution ⁇ 2.
  • the axis of revolution ⁇ 2 of the engine is substantially in the length of the main body 2 so that the motor is oriented in the direction of travel of the air flow.
  • this motor 7 is an electronically commutated motor (ECM).
  • the main body 2 is composed of at least one main portion 12 and a secondary portion 13.
  • the main part 12 comprises a portion 14 which is downward, that is to say which tilts inwards or the center of the main body 2.
  • This portion 14, like the main part 12, is at least partly substantially circular as visible to the figure 1 . In other words, this portion stretches at least at an angle between 10 ° and 300 ° around the axis of revolution ⁇ 2.
  • This portion 14 is positioned under the secondary portion 13.
  • the secondary portion 13 comprises a cone 15 which has a revolution along an axis of revolution ⁇ 1.
  • the axis of revolution ⁇ 1 is substantially parallel to the axis of revolution ⁇ 2 of the motor 7 so that the cone 15 is positioned in the center of the secondary portion 13.
  • This cone 15 will be called cone 15 of central revolution thereafter.
  • the top of the cone 15 is directed towards the inside of the main body 2. In this way, the cone 15 is positioned at least partly inside and in the center of the portion 14 of the main part 12.
  • the main part 12 and the secondary part 13 form the secondary duct 8 for evacuating the air towards the outer outlet 9.
  • the main part 12 (including the portion 14) comprises a first wall 16 which corresponds to the surface of the secondary duct 8 of air evacuation on which the air comes to rest in order to exit.
  • the secondary part 13 comprises a second wall 17 which corresponds to the surface of the duct 8 secondary air evacuation on which is also to rely the air to be evacuated. It is more precisely these walls which form the secondary duct 8 for evacuation of the air.
  • This comprises a passage 10 which forms a fold 11 at an angle ⁇ of between 120 ° and 200 °.
  • This fold 11 forms a baffle which forces the air, which passes through the secondary exhaust duct 8, to make a substantially complete turn, that is to say a turn (or baffle) at an angle of between 120.degree. ° and 200 °.
  • this turn occurs around an axis of trajectory A.
  • This axis of trajectory A is directed along the portion 14 of the main portion 12 as visible on FIG. figure 3 .
  • the advantage of this turn is to increase the surface of the walls in contact with the air flow and thus increase the friction of the air with the walls which slows down the speed of the air.
  • the idle air arrives via the secondary air outlet duct 8 at the outer outlet 9.
  • This external outlet 9 corresponds to a gap formed between the main portion 12 and the secondary portion 13 along the periphery of the main body 2.
  • the separation between the two parts is on average 1 cm. It can also be narrower or wider.
  • the outer outlet 9 of said secondary discharge duct 8 extends at an angle of between 10 ° and 300 ° around the axis of revolution ⁇ 2.
  • the outer outlet 9 forms a plane P.
  • Said plane P corresponds to a plane P tangent to the main body 2 and is positioned between the outer ends of the walls of the secondary duct 8 for evacuating the air at the outer outlet 9
  • the plane P and the secondary discharge duct 8 form between them an angle 13 which is between 80 and 90 ° so that the air operates a perpendicular turn in the secondary discharge duct 8. In this way, the air flow exits substantially perpendicular to the main body 2, which makes it possible to direct the flow in a direction other than towards the user.
  • the outer outlet 9 of said secondary discharge duct 8 extends along the main body 2. It extends around the axis of revolution ⁇ 1 of the cone 15 at an angle of between 10 ° and 300 °. In the context of the invention, the outer outlet 9 extends at an angle of 300 ° around the axis of revolution ⁇ 1 and the surface occupied by the outer outlet 9 is 16 cm 2 .
  • the hand-held vacuum cleaner 1 comprises an electronic card 19 which is positioned in the main body 2.
  • the hand-held vacuum cleaner 1 further comprises a screen 18 at the outlet of the main suction duct 6. This is used to divide the air flow and to direct a portion of the air flow to the secondary air duct 8 and another part to the electronic card 19 so as to cool it.
  • the portion of the air flow incident on the electronic card 19 has a speed of between 6 and 15 ms -1 , which makes it possible to cool the components that are most sensitive to temperature constraints.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)

Abstract

L'invention concerne un aspirateur (1) à main comprenant : - un corps principal comprenant une poignée de préhension et un conduit (6) principal d'aspiration d'air ; - des moyens (7) d'aspiration générant un flux d'air à travers le conduit (6) principal d'aspiration d'air ; - un dispositif (4) de séparation cyclonique de poussière à un ou deux étages, connecté de façon aéraulique au conduit (6) principal d'aspiration ; - un conduit (8) secondaire d'évacuation de l'air comprenant une sortie extérieure (9) ; caractérisé en ce que le conduit (8) secondaire d'évacuation de l'air comprend au moins un passage (10) dans lequel ledit conduit (8) secondaire forme un repli (11) selon un angle compris entre 120° et 200° et préférentiellement 180° selon un axe de trajectoire (A).The invention relates to a vacuum cleaner (1) comprising: - a main body comprising a grip handle and a duct (6) main air suction; - Suction means (7) generating a flow of air through the main air intake duct (6); a device (4) for cyclonic dust separation with one or two stages, connected aeraulically to the main suction duct (6); - a duct (8) secondary air evacuation comprising an outer outlet (9); characterized in that the duct (8) for secondary air evacuation comprises at least one passage (10) in which said duct (8) forms a secondary fold (11) at an angle between 120 ° and 200 ° and preferably 180 ° according to a trajectory axis (A).

Description

La présente invention concerne les aspirateurs à main de type « sans sac » fonctionnant sur batteries, utilisant un moteur à commutations électroniques (MCE) et comprenant un dispositif de filtration cyclonique. Plus particulièrement l'invention concerne une architecture particulière d'un circuit aéraulique d'évacuation d'un flux d'air en sortie du moteur.The present invention relates to battery-operated bagless hand vacuums using an electronically commutated motor (ECM) and comprising a cyclonic filter device. More particularly, the invention relates to a particular architecture of an air flow circuit for evacuating an air flow at the outlet of the engine.

On connait déjà des aspirateurs à main qui comprennent un conduit principal d'aspiration d'air ainsi que des moyens d'aspiration générant un flux d'air à travers le conduit principal d'aspiration d'air. Ces aspirateurs comprennent également un dispositif de séparation cyclonique de poussière connecté de façon aéraulique au conduit principal d'aspiration et un conduit secondaire d'évacuation qui est agencé pour évacuer le flux d'air. Ledit conduit secondaire d'évacuation est en général connecté de façon aéraulique au dispositif de séparation cyclonique de poussière et est agencé après celui-ci.Hand vacuums are already known which comprise a main air intake duct as well as suction means generating a flow of air through the main air intake duct. These vacuum cleaners also comprise a cyclonic dust separation device aeraulically connected to the main suction duct and a secondary evacuation duct which is arranged to evacuate the air flow. Said secondary discharge duct is generally connected aeraulic to the cyclonic dust separation device and is arranged after it.

Cependant le conduit secondaire d'évacuation de ces aspirateurs rejette directement le flux d'air à l'extérieur de l'aspirateur. En d'autres termes, le flux en sortie du moteur emprunte le chemin le plus court pour sortir de l'aspirateur. Il a été remarqué que ceci engendre beaucoup de bruit du fait que le flux d'air a une vitesse élevée en sortie du conduit secondaire d'évacuation. Ces aspirateurs à main sont donc bruyants ce qui engendre une gêne pour les utilisateurs.However, the secondary evacuation duct of these vacuums directly rejects the flow of air outside the vacuum cleaner. In other words, the output flow of the motor takes the shortest way out of the vacuum cleaner. It has been noticed that this generates a lot of noise because the air flow has a high speed at the outlet of the secondary evacuation duct. These hand vacuums are so noisy which creates discomfort for users.

Des constructions particulières de conduit secondaire d'évacuation existent afin de diminuer le bruit mais elles induisent des inconvénients comme des pertes de charge au niveau du moteur ou une diminution de la compacité de l'aspirateur à main ou encore une évacuation non orientée du flux d'air.Particular constructions of secondary evacuation ducts exist in order to reduce the noise but they induce inconveniences such as pressure drops at the motor level or a reduction in the compactness of the hand-held vacuum cleaner or else an undirected evacuation of the flow of water. 'air.

Un but de la présente invention est de répondre aux inconvénients mentionnés ci-dessus et de proposer un circuit aéraulique qui permette de réduire au maximum les pertes de charges, de réduire le niveau sonore de l'aspirateur, de refroidir l'électronique du moteur, d'orienter le flux de sortie d'air et de garantir la compacité de l'aspirateur à main.An object of the present invention is to meet the drawbacks mentioned above and to provide an air flow circuit which makes it possible to minimize the pressure drops, to reduce the noise level of the vacuum cleaner, to cool the motor electronics, to direct the flow of air outlet and to guarantee the compactness of the hand-held vacuum cleaner.

Pour cela l'invention concerne un aspirateur à main comprenant :

  • un corps principal comprenant une poignée de préhension et un conduit principal d'aspiration d'air ;
  • des moyens d'aspiration générant un flux d'air à travers le conduit principal d'aspiration d'air ;
  • un dispositif de séparation cyclonique de poussière à un ou deux étages, connecté de façon aéraulique au conduit principal d'aspiration ;
  • un conduit secondaire d'évacuation de l'air comprenant une sortie extérieure ;
caractérisé en ce que
le conduit secondaire d'évacuation de l'air comprend au moins un passage dans lequel ledit conduit secondaire forme un repli selon un angle compris entre 120° et 200° et préférentiellement 180° selon un axe de trajectoire.For this, the invention relates to a hand-held vacuum cleaner comprising:
  • a main body including a handle and a main air intake duct;
  • suction means generating a flow of air through the main air intake duct;
  • a one or two-stage cyclonic dust separation device connected aeraulically to the main suction duct;
  • a secondary air evacuation duct comprising an external outlet;
characterized in that
the secondary duct for evacuation of the air comprises at least one passage in which said secondary duct forms a fold at an angle of between 120 ° and 200 ° and preferably 180 ° along a path axis.

De cette manière le conduit secondaire d'évacuation du flux d'air est rallongé par rapport aux conduits existants qui rejettent directement l'air hors du corps principal. Ceci permet de réduire la vitesse du flux d'air en sortie du conduit secondaire d'évacuation et permet ainsi de diminuer au moins en partie le bruit. En effet comme la surface de contact entre le flux d'air et le conduit secondaire d'évacuation est augmentée, il y a plus de frottements du flux avec les parois du conduit secondaire d'évacuation ce qui a pour conséquence de diminuer mécaniquement la vitesse du flux d'air en sortie et donc de diminuer le bruit.In this way, the secondary duct for evacuating the air flow is extended relative to the existing ducts which directly discharge the air out of the main body. This makes it possible to reduce the speed of the air flow at the outlet of the secondary evacuation duct and thus makes it possible to reduce at least part of the noise. Indeed, as the contact area between the air flow and the secondary evacuation duct is increased, there is more friction of the flow with the walls of the secondary evacuation duct, which has the effect of mechanically decreasing the velocity of the air flow at the output and thus to reduce the noise.

Selon une caractéristique de l'invention, le conduit secondaire d'évacuation de l'air forme avec la sortie extérieure un angle compris entre 80 et 90°.According to one characteristic of the invention, the secondary air evacuation duct forms with the external outlet an angle of between 80 and 90 °.

De cette manière on peut orienter le flux sortant de manière à ce qu'il ne soit pas dirigé vers l'utilisateur.In this way, the outgoing flow can be oriented so that it is not directed towards the user.

Selon une caractéristique de l'invention, le corps principal comprend au moins une partie principale et une partie secondaire et ladite partie principale comprend une portion qui vient se positionner sous ladite partie secondaire et ladite partie secondaire comprend un cône de révolution central selon un axe de révolution dirigé vers l'intérieur du corps principal et qui vient se positionner au moins en partie en dessous de la portion de la partie principale.According to one characteristic of the invention, the main body comprises at least one main portion and a secondary portion and said main portion comprises a portion which is positioned under said secondary portion and said secondary portion comprises a central cone of revolution along a longitudinal axis. revolution directed towards the interior of the main body and which is positioned at least partly below the portion of the main part.

Une telle construction permet de fabriquer un conduit secondaire d'évacuation à partir du corps principal et ainsi de diminuer le bruit tout en conservant la compacité d'un tel aspirateur car il n'est pas nécessaire de rajouter un conduit annexe qui viendrait augmenter la taille d'un tel aspirateur.Such a construction makes it possible to manufacture a secondary evacuation duct from the main body and thus to reduce the noise while maintaining the compactness of such a vacuum cleaner because it is not necessary to add a duct annex that would increase the size of such a vacuum cleaner.

Selon une caractéristique de l'invention, la partie principale comprend une première paroi et la partie secondaire comprend une seconde paroi et lesdites premières et secondes parois forment le conduit secondaire d'évacuation.According to a characteristic of the invention, the main part comprises a first wall and the secondary part comprises a second wall and said first and second walls form the secondary evacuation duct.

De cette manière il n'est pas nécessaire d'ajouter de la matière pour obtenir un conduit secondaire d'évacuation permettant de ne pas augmenter ni le poids, ni la taille.In this way it is not necessary to add material to obtain a secondary evacuation duct to not increase the weight or size.

Selon une caractéristique de l'invention, l'aspirateur à main comprend un moteur qui comprend un axe de révolution sensiblement parallèle à l'axe de révolution du cône de révolution central.According to one characteristic of the invention, the hand-held vacuum cleaner comprises a motor which comprises an axis of revolution substantially parallel to the axis of revolution of the central cone of revolution.

Cette caractéristique a pour effet d'avoir un moteur qui soit orienté dans le même sens que le flux d'air circulant ce qui permet de ne pas interférer avec ledit flux et donc de ne pas avoir de pertes de charge.This characteristic has the effect of having a motor that is oriented in the same direction as the circulating air flow which allows not to interfere with said flow and therefore not to have losses.

Selon une caractéristique de l'invention, le dispositif de séparation cyclonique comprend un axe de révolution qui est sensiblement perpendiculaire à l'axe de révolution du cône ou du moteur.According to one characteristic of the invention, the cyclonic separation device comprises an axis of revolution which is substantially perpendicular to the axis of revolution of the cone or the engine.

Cette caractéristique a pour effet d'optimiser la compacité du dispositif de séparation cyclonique.This characteristic has the effect of optimizing the compactness of the cyclonic separating device.

Selon une caractéristique de l'invention, la sortie extérieure dudit conduit secondaire d'évacuation s'étire selon un angle compris entre 10° et 300° autour de l'axe de révolution du cône.According to a characteristic of the invention, the external outlet of said secondary discharge duct extends at an angle of between 10 ° and 300 ° around the axis of revolution of the cone.

Cette caractéristique a pour effet d'adapter la taille de la sortie extérieure à la quantité d'air expulsée.This characteristic has the effect of adapting the size of the external outlet to the quantity of air expelled.

Selon une caractéristique de l'invention, la sortie extérieure dudit conduit secondaire d'évacuation forme une surface sur le corps principal comprise entre 5 et 20 cm2 et préférentiellement 16 cm2.According to one characteristic of the invention, the external outlet of said secondary discharge duct forms a surface on the main body of between 5 and 20 cm 2 and preferably 16 cm 2 .

Selon une caractéristique de l'invention, l'aspirateur comprend un écran en sortie du conduit principal d'aspiration de manière à diviser le flux et à orienter une partie du flux d'air vers le conduit secondaire d'évacuation de l'air et une autre partie vers une carte électronique de manière à refroidir celle-ci.According to one characteristic of the invention, the vacuum cleaner comprises a screen at the outlet of the main suction duct so as to divide the flow and to direct a portion of the air flow towards the secondary duct for evacuation of the air and another part to an electronic card so as to cool it.

Selon une caractéristique de l'invention, une mousse acoustique est positionnée dans le conduit secondaire d'évacuation de l'air.According to one characteristic of the invention, an acoustic foam is positioned in the secondary duct for evacuation of air.

Cette mousse a pour effet de diminuer encore la vitesse du flux d'air et donc de diminuer le bruit.This foam has the effect of further reducing the speed of the air flow and thus reduce the noise.

D'autres caractéristiques et avantages de la présente invention apparaîtront plus clairement à la lecture de la description détaillée qui suit d'un mode de réalisation de l'invention donné à titre d'exemple nullement limitatif et illustré par les dessins annexés, dans lesquels :

  • la figure 1 représente une vue en perspective d'un aspirateur à main conforme à l'invention ;
  • la figure 2 représente une vue en coupe de l'aspirateur à main ;
  • la figure 3 représente un agrandissement d'une partie de la figure 2.
Other features and advantages of the present invention will appear more clearly on reading the following detailed description of an embodiment of the invention given by way of non-limiting example and illustrated by the appended drawings, in which:
  • the figure 1 represents a perspective view of a hand-held vacuum cleaner according to the invention;
  • the figure 2 represents a sectional view of the hand-held vacuum cleaner;
  • the figure 3 represents an enlargement of part of the figure 2 .

Comme visible à la figure 1, un aspirateur 1 à main est composé d'un corps principal 2. Ce corps principal 2 comprend à une de ses extrémités un conduit 6 principal d'aspiration d'air et à une autre extrémité un conduit 8 secondaire d'évacuation de l'air. Ce conduit 8 secondaire d'évacuation de l'air comprend une sortie extérieure 9. Entre ces deux conduits, le corps principal 2 renferme des moyens 7 d'aspiration générant un flux d'air à travers le conduit 6 principal d'aspiration d'air et le conduit 8 secondaire d'évacuation de l'air. En d'autres termes, l'air est aspiré par le conduit 6 principal d'aspiration d'air et est rejeté par le conduit 8 secondaire d'évacuation de l'air au niveau de la sortie extérieure 9. Dans une variante de réalisation, une mousse acoustique (non représentée) peut être positionnée dans le conduit 8 secondaire d'évacuation de l'air afin d'atténuer encore la vitesse de l'air et donc le bruit.As visible at figure 1 , a vacuum cleaner 1 hand is composed of a main body 2. This main body 2 comprises at one of its ends a main duct 6 of air intake and at another end a conduit 8 secondary discharge of the air. This secondary exhaust duct 8 comprises an external outlet 9. Between these two ducts, the main body 2 encloses suction means 7 generating a flow of air through the main suction duct 6. air and the secondary duct 8 for evacuation of air. In other words, the air is sucked by the main duct 6 of air intake and is rejected by the secondary duct 8 for discharging the air at the outer outlet 9. In an alternative embodiment an acoustic foam (not shown) can be positioned in the secondary duct 8 air evacuation to further reduce the speed of air and therefore the noise.

Une poignée 5 de préhension est attachée au corps principal 2. Elle permet à un utilisateur de manipuler l'aspirateur 1 à main. Dans le mode de réalisation de l'invention, celle-ci se situe sous le corps principal 2 pour une bonne manipulation, mais dans d'autres modes de réalisation, non représentés, celle-ci peut se trouver positionnée ailleurs sur le corps principal 2.A handle 5 is attached to the main body 2. It allows a user to manipulate the vacuum cleaner 1 hand. In the embodiment of the invention, it is located under the main body 2 for good handling, but in other embodiments, not shown, it may be positioned elsewhere on the main body 2 .

L'aspirateur 1 à main comprend en outre un dispositif 4 de séparation cyclonique de poussière. Celui-ci peut être à un ou plusieurs étages et il a pour but de séparer et de filtrer la poussière. Ce dispositif 4 de séparation cyclonique est attaché au corps principal 2. Il se situe en dessous de celui-ci de manière à être perpendiculaire et connecté de façon aéraulique au conduit 6 principal d'aspiration. Le dispositif 4 de séparation cyclonique est disposé selon une révolution autour d'un axe de révolution Δ3. L'axe de révolution Δ3 est sensiblement perpendiculaire au conduit 6 principal d'aspiration, comme visible à la figure 1. Le dispositif 4 de séparation cyclonique est à un étage. Dans une autre variante de réalisation, non représentée, il peut être à deux étages.The hand vacuum cleaner 1 further comprises a device 4 cyclonic separation of dust. This can be one or more floors and it aims to separate and filter the dust. This cyclonic separation device 4 is attached to the main body 2. It is located below it so as to be perpendicular and aeraulically connected to the main suction duct 6. The cyclonic separation device 4 is arranged in a revolution around an axis of revolution Δ3. The axis of revolution Δ3 is substantially perpendicular to the main duct 6 suction, as visible in the figure 1 . The cyclonic separation device 4 is in one stage. In another embodiment, not shown, it can be two stages.

Comme visible à la figure 2, les moyens 7 d'aspiration sont composés d'un moteur 7. Ce moteur 7 est positionné autour et le long d'un axe de révolution Δ2. L'axe de révolution Δ2 du moteur se situe sensiblement dans la longueur du corps principal 2 de manière à ce que le moteur soit orienté dans le sens de parcours du flux d'air. Dans le cadre de l'invention, ce moteur 7 est un moteur à commutation électronique (MCE).As visible at figure 2 , the suction means 7 are composed of a motor 7. This motor 7 is positioned around and along an axis of revolution Δ2. The axis of revolution Δ2 of the engine is substantially in the length of the main body 2 so that the motor is oriented in the direction of travel of the air flow. In the context of the invention, this motor 7 is an electronically commutated motor (ECM).

Plus particulièrement et comme visible à la figure 2, le corps principal 2 est composé d'au moins une partie principale 12 et d'une partie secondaire 13.More particularly and as visible to the figure 2 , the main body 2 is composed of at least one main portion 12 and a secondary portion 13.

La partie principale 12 comprend une portion 14 qui est descendante c'est-à-dire qui s'incline vers l'intérieur ou le centre du corps principal 2. Cette portion 14, comme la partie principal 12, est au moins en partie sensiblement circulaire comme visible à la figure 1. En d'autres termes, cette portion s'étire au moins selon un angle compris entre 10° et 300° autour de l'axe de révolution Δ2.The main part 12 comprises a portion 14 which is downward, that is to say which tilts inwards or the center of the main body 2. This portion 14, like the main part 12, is at least partly substantially circular as visible to the figure 1 . In other words, this portion stretches at least at an angle between 10 ° and 300 ° around the axis of revolution Δ2.

Cette portion 14 vient se positionner sous la partie secondaire 13. La partie secondaire 13 comprend quant à elle un cône 15 qui a une révolution selon un axe de révolution Δ1. L'axe de révolution Δ1 est sensiblement parallèle à l'axe de révolution Δ2 du moteur 7 ce qui fait que le cône 15 est positionné au centre de la partie secondaire 13. Ce cône 15 sera appelé cône 15 de révolution central par la suite. Le haut du cône 15 est dirigé vers l'intérieur du corps principal 2. De cette manière, le cône 15 vient se positionner au moins en partie à l'intérieur et au centre de la portion 14 de la partie principale 12.This portion 14 is positioned under the secondary portion 13. The secondary portion 13 comprises a cone 15 which has a revolution along an axis of revolution Δ1. The axis of revolution Δ1 is substantially parallel to the axis of revolution Δ2 of the motor 7 so that the cone 15 is positioned in the center of the secondary portion 13. This cone 15 will be called cone 15 of central revolution thereafter. The top of the cone 15 is directed towards the inside of the main body 2. In this way, the cone 15 is positioned at least partly inside and in the center of the portion 14 of the main part 12.

De cette manière, la partie principale 12 et la partie secondaire 13 forment le conduit 8 secondaire d'évacuation de l'air vers la sortie extérieure 9. A cet effet la partie principale 12 (incluant la portion 14) comprend une première paroi 16 qui correspond à la surface du conduit 8 secondaire d'évacuation de l'air sur laquelle vient s'appuyer l'air afin de sortir. De la même manière la partie secondaire 13 comprend une seconde paroi 17 qui correspond à la surface du conduit 8 secondaire d'évacuation de l'air sur laquelle vient également s'appuyer l'air qui doit être évacué. Ce sont plus précisément ces parois qui forment le conduit 8 secondaire d'évacuation de l'air. Celui-ci comprend un passage 10 qui forme un repli 11 selon un angle α compris entre 120° et 200°. Ce repli 11 forme une chicane qui impose à l'air, qui traverse le conduit 8 secondaire d'évacuation, d'opérer un virage pratiquement complet, c'est-à-dire un virage (ou chicane) selon un angle compris entre 120° et 200°. Dans le cadre de l'invention ce virage s'opère autour d'un axe de trajectoire A. Cet axe de trajectoire A est dirigé le long de la portion 14 de la partie principale 12 comme visible à la figure 3. L'intérêt de ce virage est d'augmenter la surface des parois en contact avec le flux d'air et donc d'augmenter les frottements de l'air avec les parois ce qui permet de ralentir la vitesse de l'air. Ensuite l'air ralenti arrive par le conduit 8 secondaire d'évacuation de l'air au niveau de la sortie extérieure 9. Cette sortie extérieure 9 correspond à un interstice formé entre la partie principale 12 et la partie secondaire 13 le long du pourtour du corps principal 2. La séparation entre les deux parties est en moyenne de 1 cm. Elle peut également être plus étroite ou plus large.In this way, the main part 12 and the secondary part 13 form the secondary duct 8 for evacuating the air towards the outer outlet 9. For this purpose the main part 12 (including the portion 14) comprises a first wall 16 which corresponds to the surface of the secondary duct 8 of air evacuation on which the air comes to rest in order to exit. In the same way the secondary part 13 comprises a second wall 17 which corresponds to the surface of the duct 8 secondary air evacuation on which is also to rely the air to be evacuated. It is more precisely these walls which form the secondary duct 8 for evacuation of the air. This comprises a passage 10 which forms a fold 11 at an angle α of between 120 ° and 200 °. This fold 11 forms a baffle which forces the air, which passes through the secondary exhaust duct 8, to make a substantially complete turn, that is to say a turn (or baffle) at an angle of between 120.degree. ° and 200 °. In the context of the invention, this turn occurs around an axis of trajectory A. This axis of trajectory A is directed along the portion 14 of the main portion 12 as visible on FIG. figure 3 . The advantage of this turn is to increase the surface of the walls in contact with the air flow and thus increase the friction of the air with the walls which slows down the speed of the air. Then the idle air arrives via the secondary air outlet duct 8 at the outer outlet 9. This external outlet 9 corresponds to a gap formed between the main portion 12 and the secondary portion 13 along the periphery of the main body 2. The separation between the two parts is on average 1 cm. It can also be narrower or wider.

En lien avec les figures 1 et 2, la sortie extérieure 9 dudit conduit 8 secondaire d'évacuation s'étire selon un angle compris entre 10° et 300° autour de l'axe de révolution Δ2.In connection with the figures 1 and 2 , the outer outlet 9 of said secondary discharge duct 8 extends at an angle of between 10 ° and 300 ° around the axis of revolution Δ2.

Comme visible à la figure 3 ou à la figure 1, la sortie extérieure 9 forme un plan P. Ledit plan P correspond à un plan P tangent au corps principal 2 et est positionné entre les extrémités extérieures des parois du conduit 8 secondaire d'évacuation de l'air au niveau de la sortie extérieure 9. Le plan P et le conduit 8 secondaire d'évacuation forment entre eux un angle 13 qui est compris entre 80 et 90° afin que l'air opère un virage perpendiculaire dans le conduit 8 secondaire d'évacuation. De cette manière le flux d'air sort sensiblement perpendiculairement par rapport au corps principal 2 ce qui permet de diriger le flux dans une direction autre que vers l'utilisateur.As visible at figure 3 or at figure 1 the outer outlet 9 forms a plane P. Said plane P corresponds to a plane P tangent to the main body 2 and is positioned between the outer ends of the walls of the secondary duct 8 for evacuating the air at the outer outlet 9 The plane P and the secondary discharge duct 8 form between them an angle 13 which is between 80 and 90 ° so that the air operates a perpendicular turn in the secondary discharge duct 8. In this way, the air flow exits substantially perpendicular to the main body 2, which makes it possible to direct the flow in a direction other than towards the user.

Dans le cadre de l'invention, la sortie extérieure 9 dudit conduit 8 secondaire d'évacuation s'étire le long du corps principal 2. Elle s'étire autour de l'axe de révolution Δ1 du cône 15 selon un angle compris entre 10° et 300°. Dans le cadre de l'invention, la sortie extérieure 9 s'étire suivant un angle de 300° autour de l'axe de révolution Δ1 et la surface qu'occupe la sortie extérieure 9 est de 16 cm2.In the context of the invention, the outer outlet 9 of said secondary discharge duct 8 extends along the main body 2. It extends around the axis of revolution Δ1 of the cone 15 at an angle of between 10 ° and 300 °. In the context of the invention, the outer outlet 9 extends at an angle of 300 ° around the axis of revolution Δ1 and the surface occupied by the outer outlet 9 is 16 cm 2 .

Afin de piloter le moteur 7, l'aspirateur 1 à main comprend une carte électronique 19 qui est positionnée dans le corps principal 2.In order to control the motor 7, the hand-held vacuum cleaner 1 comprises an electronic card 19 which is positioned in the main body 2.

L'aspirateur 1 à main comprend en outre un écran 18 en sortie du conduit 6 principal d'aspiration. Celui-ci sert à diviser le flux d'air et à orienter une partie du flux d'air vers le conduit 8 secondaire d'évacuation de l'air et une autre partie vers la carte électronique 19 de manière à refroidir celle-ci. A titre d'exemple la partie du flux d'air incident sur la carte électronique 19 a une vitesse comprise entre 6 et 15 m.s-1 ce qui permet de refroidir les composants les plus sensibles aux contraintes de température.The hand-held vacuum cleaner 1 further comprises a screen 18 at the outlet of the main suction duct 6. This is used to divide the air flow and to direct a portion of the air flow to the secondary air duct 8 and another part to the electronic card 19 so as to cool it. By way of example, the portion of the air flow incident on the electronic card 19 has a speed of between 6 and 15 ms -1 , which makes it possible to cool the components that are most sensitive to temperature constraints.

On comprendra que diverses modifications et/ou améliorations évidentes pour l'homme du métier peuvent être apportées au mode de réalisation de l'invention décrit dans la présente description sans sortir du cadre de l'invention défini par les revendications annexées.It will be understood that various modifications and / or improvements obvious to those skilled in the art can be made to the embodiment of the invention described in the present description without departing from the scope of the invention defined by the appended claims.

Claims (10)

Aspirateur (1) à main comprenant : - un corps principal (2) comprenant une poignée (5) de préhension et un conduit (6) principal d'aspiration d'air ; - des moyens (7) d'aspiration générant un flux d'air à travers le conduit (6) principal d'aspiration d'air ; - un dispositif (4) de séparation cyclonique de poussière à un ou deux étages, connecté de façon aéraulique au conduit (6) principal d'aspiration ; - un conduit (8) secondaire d'évacuation de l'air comprenant une sortie extérieure (9) ; caractérisé en ce que
le conduit (8) secondaire d'évacuation de l'air comprend au moins un passage (10) dans lequel ledit conduit (8) secondaire forme un repli (11) selon un angle compris entre 120° et 200° et préférentiellement 180° selon un axe de trajectoire (A).Vacuum cleaner (1) comprising: - a main body (2) comprising a handle (5) for gripping and a duct (6) main air suction; - Suction means (7) generating a flow of air through the main air intake duct (6); a device (4) for cyclonic dust separation with one or two stages, connected aeraulically to the main suction duct (6); - a duct (8) secondary air evacuation comprising an outer outlet (9); characterized in that
the duct (8) for secondary air evacuation comprises at least one passage (10) in which said duct (8) forms a secondary fold (11) at an angle between 120 ° and 200 ° and preferably 180 ° according to a trajectory axis (A). Aspirateur (1) à main selon la revendication précédente caractérisé en ce que le conduit (8) secondaire d'évacuation de l'air forme avec la sortie extérieure (9) un angle compris entre 80 et 90°.Vacuum cleaner (1) hand according to the preceding claim characterized in that the duct (8) secondary discharge air forms with the outer outlet (9) an angle between 80 and 90 °. Aspirateur (1) à main selon l'une des revendications précédentes caractérisé en ce que le corps principal (2) comprend au moins une partie principale (12) et une partie secondaire (13) et ladite partie principale (12) comprend une portion (14) qui vient se positionner sous ladite partie secondaire (13) et ladite partie secondaire (13) comprend un cône (15) de révolution central selon un axe de révolution (Δ1) dirigé vers l'intérieur du corps principal (2) et qui vient se positionner au moins en partie en dessous de la portion (14) de la partie principale (12).Hand vacuum cleaner (1) according to one of the preceding claims, characterized in that the main body (2) comprises at least one main part (12) and a secondary part (13) and said main part (12) comprises a portion ( 14) which is positioned under said secondary part (13) and said secondary part (13) comprises a cone (15) of central revolution along an axis of revolution (Δ1) directed towards the inside of the main body (2) and which is positioned at least partially below the portion (14) of the main portion (12). Aspirateur (1) à main selon la revendication précédente, caractérisé en ce que la partie principale (12) comprend une première paroi (16) et la partie secondaire (13) comprend une seconde paroi (17) et lesdites premières et secondes parois forment le conduit (8) secondaire d'évacuation.Vacuum cleaner (1) according to the preceding claim, characterized in that the main portion (12) comprises a first wall (16) and the secondary portion (13) comprises a second wall (17) and said first and second walls form the conduit (8) secondary discharge. Aspirateur (1) à main selon la revendication précédente, caractérisé en ce qu'il comprend un moteur (7) qui comprend un axe de révolution (Δ2) sensiblement parallèle à l'axe de révolution (Δ1) du cône (15) de révolution central.Vacuum cleaner (1) hand according to the preceding claim, characterized in that it comprises a motor (7) which comprises an axis of revolution (Δ2) substantially parallel to the axis of revolution (Δ1) of the cone (15) of revolution central. Aspirateur (1) à main selon la revendication précédente, caractérisé en ce que le dispositif (4) de séparation cyclonique comprend un axe de révolution (Δ3) qui est sensiblement perpendiculaire à l'axe de révolution (Δ1) du cône ou du moteur.Vacuum cleaner (1) hand according to the preceding claim, characterized in that the device (4) for cyclonic separation comprises an axis of revolution (Δ3) which is substantially perpendicular to the axis of revolution (Δ1) of the cone or the motor. Aspirateur (1) à main selon l'une des revendications 3 à 6, caractérisé en ce que la sortie extérieure (9) dudit conduit (8) secondaire d'évacuation s'étire selon un angle compris entre 10° et 300° autour de l'axe de révolution (Δ1) du cône.Vacuum cleaner (1) according to one of claims 3 to 6, characterized in that the outer outlet (9) of said secondary evacuation duct (8) extends at an angle of between 10 ° and 300 ° around the axis of revolution (Δ1) of the cone. Aspirateur (1) à main selon l'une des revendications précédentes, caractérisé en ce que la sortie extérieure (9) dudit conduit (8) secondaire d'évacuation forme une surface sur le corps principal (2) comprise entre 5 et 20 cm2 et préférentiellement 16 cm2.Vacuum cleaner (1) according to one of the preceding claims, characterized in that the outer outlet (9) of said secondary discharge duct (8) forms a surface on the main body (2) of between 5 and 20 cm 2 and preferably 16 cm 2 . Aspirateur (1) à main selon l'une des revendications précédentes, caractérisé en ce qu'il comprend un écran (18) en sortie du conduit (6) principal d'aspiration de manière à diviser le flux et à orienter une partie du flux d'air vers le conduit (8) secondaire d'évacuation de l'air et une autre partie vers une carte électronique (19) de manière à refroidir celle-ci.Vacuum cleaner (1) according to one of the preceding claims, characterized in that it comprises a screen (18) at the outlet of the main suction duct (6) so as to divide the flow and to orient a part of the flow of air to the secondary air evacuation duct (8) and another part to an electronic card (19) so as to cool it. Aspirateur (1) à main selon l'une des revendications précédentes caractérisé en ce qu'une mousse acoustique est positionnée dans le conduit (8) secondaire d'évacuation de l'air.Vacuum cleaner (1) hand according to one of the preceding claims characterized in that an acoustic foam is positioned in the duct (8) secondary exhaust air.
EP16204881.3A 2015-12-23 2016-12-16 Geometry of an air-driven circuit for a hand-held vacuum cleaner Active EP3184011B1 (en)

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EP3184011B1 (en) 2021-04-07
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CN106901651A (en) 2017-06-30
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FR3046046A1 (en) 2017-06-30
KR102617201B1 (en) 2023-12-26

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