EP4056087A1 - Hausstaubsauger, der mit einem schalldämpfenden hohlraum ausgestattet ist - Google Patents

Hausstaubsauger, der mit einem schalldämpfenden hohlraum ausgestattet ist Download PDF

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Publication number
EP4056087A1
EP4056087A1 EP22159745.3A EP22159745A EP4056087A1 EP 4056087 A1 EP4056087 A1 EP 4056087A1 EP 22159745 A EP22159745 A EP 22159745A EP 4056087 A1 EP4056087 A1 EP 4056087A1
Authority
EP
European Patent Office
Prior art keywords
air
vacuum cleaner
acoustic
sound
air exhaust
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP22159745.3A
Other languages
English (en)
French (fr)
Other versions
EP4056087B1 (de
EP4056087C0 (de
Inventor
Bruno Vaganay
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
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Filing date
Publication date
Application filed by SEB SA filed Critical SEB SA
Publication of EP4056087A1 publication Critical patent/EP4056087A1/de
Application granted granted Critical
Publication of EP4056087B1 publication Critical patent/EP4056087B1/de
Publication of EP4056087C0 publication Critical patent/EP4056087C0/de
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Anticipated expiration legal-status Critical

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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
    • A47L5/36—Suction cleaners with hose between nozzle and casing; Suction cleaners for fixing on staircases; Suction cleaners for carrying on the back
    • A47L5/362—Suction cleaners with hose between nozzle and casing; Suction cleaners for fixing on staircases; Suction cleaners for carrying on the back of the horizontal type, e.g. canister or sledge type
    • 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

Definitions

  • the present invention relates to the field of domestic vacuum cleaners making it possible to suck up dust and waste present on a surface to be cleaned, which can for example be tiles, parquet, laminate, carpet or a rug.
  • the device suction When such a household vacuum cleaner is in operation, the device suction generates acoustic waves which propagate in particular in the air evacuation circuit and which induce noise and vibrations liable to disturb the user.
  • the present invention aims to remedy all or part of these drawbacks.
  • the technical problem underlying the invention consists in particular in providing a domestic vacuum cleaner which is of simple and economical structure, while substantially limiting the noise and vibrations generated by the domestic vacuum cleaner.
  • the air evacuation circuit comprises an acoustic attenuation cavity opening into the air evacuation duct, and an acoustic absorption element which is made of porous material and which is configured to separate the acoustic attenuation cavity and the air exhaust duct, the sound absorption element and the sound attenuation cavity being configured such that that, when the domestic vacuum cleaner is in operation, at least part of the acoustic waves, originating from the suction device and propagating in the air exhaust duct, passes through the acoustic absorption element and enters the acoustic attenuation cavity.
  • porous material reference is made in the present invention to a material porous to air.
  • Such a configuration of the air evacuation circuit, and more particularly of the path of the acoustic waves within the air evacuation circuit, makes it possible to substantially reduce the energy of the acoustic waves generated by the suction device, and therefore to significantly reduce the noise generated by the domestic vacuum cleaner, and this in a passive manner and without harming the aeraulic performance of the domestic vacuum cleaner.
  • the household vacuum cleaner may further have one or more of the following features, taken alone or in combination.
  • the acoustic absorption element and the acoustic attenuation cavity are configured such that the acoustic waves having penetrated into the acoustic attenuation cavity are reflected on at least one internal wall of the acoustic attenuation cavity and such that at least a part of the acoustic waves reflected on the at least one internal wall of the acoustic attenuation cavity again passes through the acoustic absorption element and penetrates again in the air exhaust duct.
  • Such reflection of the acoustic waves within the acoustic attenuation cavity leads to a rupture of a part of the acoustic waves and a reduction in the amplitude of some of the acoustic waves.
  • the fact that at least a part of the acoustic waves reflected on the at least one internal wall of the acoustic attenuation cavity again passes through the acoustic absorption element and reenters the exhaust duct of air makes it possible to accentuate the reduction in the spectral amplitude of the acoustic waves.
  • the air evacuation circuit of the domestic vacuum cleaner according to the present invention allows attenuate the amplitude of acoustic waves over a wide frequency band.
  • the sound absorption element is made of porous materials with cavities, preferably with open cavities.
  • the acoustic absorption element is acoustically porous, and is advantageously made of an acoustically porous material.
  • the sound absorption element is an acoustic foam.
  • the sound absorption element is positioned in the air exhaust duct.
  • the sound absorbing element may extend over a part of the width of the air exhaust duct section or over the entire width of the air exhaust duct section.
  • the sound absorption element extends over only part of the width of the section of the air exhaust duct and preferably over approximately half the width of the section of the air exhaust duct. air.
  • the sound attenuation cavity comprises a passage opening opening into the air exhaust duct, the sound absorption element covering the passage opening.
  • the passage opening is closed by the sound absorption element.
  • the housing comprises a waste collection compartment located upstream of the suction device, the waste collection compartment and the engine compartment being separated by a partition wall provided with an orifice Communication.
  • the household vacuum cleaner further comprises a waste collection device disposed in the waste collection compartment and configured to retain waste transported by the air flow.
  • the waste collection device is a waste collection bag or a waste separation and collection device, for example of the cyclonic type.
  • the acoustic absorption element comprises a first surface oriented towards the acoustic attenuation cavity and a second surface which is opposite to the first surface, the air evacuation duct comprising an air stream delimited in part by the second surface of the sound absorption element and in which at least part of the air flow is intended to circulate.
  • the air stream extends substantially parallel to the second surface of the sound absorption element.
  • the first and second surfaces of the acoustic absorption element are substantially parallel.
  • the sound absorption element is parallelepipedic.
  • the sound absorption element extends substantially vertically when the domestic vacuum cleaner rests, for example by its wheels, on a horizontal surface.
  • the suction motor has a motor axis which intersects with the sound absorption element.
  • the motor axis is secant with the acoustic attenuation cavity.
  • the motor axis extends substantially horizontally when the domestic vacuum cleaner rests, for example by its wheels, on a horizontal surface.
  • the air evacuation circuit further comprises a filtration element arranged in the air evacuation duct upstream, and for example directly upstream, of the at least an air exhaust opening, and configured to filter the airflow flowing through the air exhaust duct.
  • the air evacuation circuit further comprises a flow guide element which partly delimits the air evacuation duct and which is arranged downstream of the flow guide element. sound absorption, the flow guiding element being configured to guide the flow of air towards the at least one air exhaust opening.
  • the flow guiding element comprises a flow guiding surface which is curved and concave.
  • the flow guide element comprises a plurality of flow guide fins which are arranged in the air exhaust duct and which extend substantially parallel to each other. to others.
  • each flow guiding fin extends from the flow guiding surface.
  • the air evacuation circuit comprises an additional acoustic absorption element, which is for example porous, against which the flow guide element bears.
  • each flow guide fin includes a longitudinal edge bearing against the additional acoustic absorption element.
  • the filtration element is arranged between the flow guide element and the at least one air discharge opening.
  • the at least one air discharge opening opens into an upper external surface of the casing.
  • the air discharge opening is provided in a lower part of the motor casing.
  • the suction tip is arranged in a front part of the housing.
  • the acoustic attenuation cavity is arranged in the casing, and for example in a rear part of the casing.
  • the acoustic absorption element is located at the rear of the suction device, and for example at the rear of the suction motor.
  • the at least one air discharge opening is located above the suction device, and for example above the suction motor.
  • the domestic vacuum cleaner comprises a holding device configured to hold the sound absorption element in position in the air exhaust duct.
  • the passage opening of the acoustic attenuation cavity is oriented towards the suction motor.
  • Such a configuration of the acoustic attenuation cavity makes it possible to further reduce the noise generated by the domestic vacuum cleaner.
  • the acoustic attenuation cavity has a central axis which is substantially parallel to the motor axis. Such a configuration of the acoustic attenuation cavity makes it possible to further reduce the noise generated by the domestic vacuum cleaner.
  • the acoustic attenuation element extends partially inside the acoustic attenuation cavity.
  • the part of the acoustic attenuation element extending partially inside the acoustic attenuation cavity does not extend to the bottom of the acoustic attenuation cavity and remains at a distance from the bottom of the acoustic attenuation cavity to preserve an empty volume in the acoustic attenuation cavity.
  • the domestic vacuum cleaner is a sled vacuum cleaner.
  • the figure 1 and 2 represent a domestic vacuum cleaner 2, such as a sled vacuum cleaner, comprising in particular a housing 3, also a vacuum cleaner body, comprising in known manner a waste collection compartment 4 and an engine compartment 5 which is located downstream of the collection compartment waste 4.
  • the waste collection compartment 4 and the engine compartment 5 are separated by a dividing wall 6 provided with a communication orifice 7.
  • the waste collection compartment 4 is intended to receive a waste collection device (not shown in the figures), such as a waste collection bag or a waste separation and collection device, for example of the cyclonic type, making it possible to retain waste sucked into the housing 3.
  • the domestic vacuum cleaner 2 further comprises a suction nozzle 8 disposed in a front part of the housing 3 and through which air carrying waste is intended to be sucked into the housing 3.
  • the housing 3 is advantageously equipped with wheels 11 to ensure the movement of the domestic vacuum cleaner 2.
  • the domestic vacuum cleaner 2 may also comprise a flexible hose (not shown in the figures) connected, preferably in a removable manner, to the suction nozzle 8, and a suction accessory (not shown in the figures) such as , for example, a rigid telescopic tube comprising a first end fluidically connected to the flexible pipe and a second end fluidically connected to a suction head (not shown in the figures).
  • a suction accessory such as , for example, a rigid telescopic tube comprising a first end fluidically connected to the flexible pipe and a second end fluidically connected to a suction head (not shown in the figures).
  • the domestic vacuum cleaner 2 further comprises a suction device 12 housed in the engine compartment 5.
  • the suction device 12 comprises a motor casing 13 delimiting an internal housing 14.
  • the engine casing 13 comprises a front fairing 13.1 and a rear fairing 13.2 assembled to one another, for example by screwing or snap-fastening.
  • the suction device 12 further comprises an air inlet opening 15 fluidly connected to the suction nozzle 8 and a suction motor 16, also called a fan motor, which is arranged in the internal housing 14 of the motor housing 13 and which is configured to generate a flow of air through the suction nozzle 8 and the air inlet opening 15.
  • a suction motor 16 also called a fan motor, which is arranged in the internal housing 14 of the motor housing 13 and which is configured to generate a flow of air through the suction nozzle 8 and the air inlet opening 15.
  • the suction motor 16 comprises a fan and an electric motor configured to rotate the fan.
  • the suction motor 16 has a motor axis A which extends substantially horizontally when the domestic vacuum cleaner 2 rests, via its wheels 11, on a horizontal surface.
  • the suction device 12 also comprises an air discharge opening 17 through which the air flow is intended to leave the suction device 12.
  • the air discharge opening 17 can for example be provided in a lower part of the motor housing 13.
  • the domestic vacuum cleaner 2 also comprises an air evacuation circuit 18 comprising an air evacuation opening 19 opening out into an upper external surface of the casing 3 and through which the flow of air generated by the motor of suction 16 is discharged to the outside of the domestic vacuum cleaner 2.
  • the air evacuation circuit 18 further comprises an air evacuation duct 21 which fluidically connects the air discharge opening 17 of the suction device 12 to the air evacuation opening 19 .
  • the air exhaust circuit 18 also includes an acoustic attenuation cavity 22, also called internal cavity, which includes a passage opening 23 opening into the air exhaust duct 21. advantageously, the passage opening 23 is oriented towards the suction motor 16.
  • the acoustic attenuation cavity 22 further comprises a bottom wall 22.1 which is opposite the passage opening 23 and a side wall 22.2 extending from the bottom wall 22.1.
  • the acoustic attenuation cavity 22 is arranged in a rear part of the casing 3, and the motor shaft A intersects with the acoustic attenuation cavity 22.
  • the acoustic attenuation cavity 22 has a central axis B which is substantially parallel to the motor axis A.
  • the air exhaust circuit 18 further comprises a sound absorption element 24 positioned in the air exhaust duct 21 and configured to separate the acoustic attenuation cavity 22 and the air exhaust duct 21.
  • the acoustic absorption element 24 is more particularly configured to cover and close the passage opening 23.
  • the acoustic absorption element 24 is made of porous material, such as a porous material with open cavities, and more particularly of acoustically porous material.
  • the sound absorption element 24 is for example an acoustic foam.
  • the sound absorption element 24 has a thickness of between 5 and 40 mm.
  • the sound absorption element 24 extends over only part of the width of the section of the air exhaust duct 21.
  • the sound absorption element 24 is parallelepipedic and comprises a first surface 24.1 which is oriented towards the sound attenuation cavity 22 and a second surface 24.2 which is opposite to the first surface 24.1 and which is oriented towards the suction device 12.
  • the first and second surfaces 24.1, 24.2 of the acoustic absorption element 24 are substantially parallel.
  • the sound absorption element 24 extends substantially vertically when the domestic vacuum cleaner 2 rests, via its wheels 11, on a horizontal surface, and the element sound absorption 24 is located at the rear of the suction motor 16, and is more particularly disposed between the motor housing 13 and the sound attenuation cavity 22.
  • the motor axis A is secant with the sound absorption element 24.
  • the domestic vacuum cleaner 2 comprises a holding device 25 configured to hold the acoustic absorption element 24 in position in the air exhaust duct 21.
  • the holding device 25 may for example comprise a plurality of holding lugs spaced from each other so as to allow the flow of the air flow through the air exhaust duct 21.
  • the air exhaust duct 21 comprises an air stream 26 delimited in part by the second surface 24.2 of the sound absorption element 24 and in which is intended to circulate the airflow.
  • the air stream 26 extends substantially parallel to the second surface 24.2 of the sound absorption element 24, and is also partly delimited by the motor casing 13.
  • the air exhaust circuit 18 further comprises a filtration element 27 which is arranged in the air exhaust duct 21 upstream, and for example directly upstream, of the air exhaust opening 19, and which is configured to filter the flow of air flowing through the air exhaust duct 21.
  • the air exhaust circuit 18 further comprises a flow guide element 28 which partly delimits the air exhaust duct 21 and which is arranged downstream of the sound absorption element 24.
  • flow guide element 28 is configured to guide the flow of air towards the filter element 27.
  • the filter element 27 is disposed between the flow guide element 28 and the opening of the exhaust air 19.
  • the flow guide member 28 has a flow guide surface 28.1 which is curved and concave, and a plurality of flow guide fins 28.2 which extend from the flow guiding surface 28.1 and which are arranged in the duct air discharge 21.
  • the flow guide fins 28.2 extend substantially parallel to each other.
  • the air exhaust circuit 18 comprises an additional acoustic absorption element 29 which is arranged in the air exhaust duct 21 and against which the lower longitudinal edges bear.
  • flow guide vanes 28.2 the additional acoustic absorption element 29 is porous, and is for example an acoustic foam.
  • the suction motor 16 When the suction motor 16 is electrically powered, it establishes a depression in particular in the waste collection device so that a flow of air, comprising waste, is sucked in by the suction nozzle 8.
  • the air flow then flows successively through the communication port 7 and the air inlet opening 15 of the suction device 12.
  • the air flow flows through the air discharge opening 17 and along the air exhaust duct 21, and in particular in the air stream 26 and through the element of flow guide 28 and the filter element 27, before escaping in the direction of the air outlet opening 19.
  • Such a configuration of the air evacuation circuit 18, and more particularly of the path of the acoustic waves within the air evacuation circuit 18, makes it possible to substantially reduce the energy of the acoustic waves generated by the suction device 12, and therefore to significantly reduce the noise generated by the domestic vacuum cleaner 2, and this in a passive manner and without harming the aeraulic performance of the domestic vacuum cleaner 2.
  • the reflection of the acoustic waves within the acoustic attenuation cavity 22 causes a reduction in the amplitude of some of the acoustic waves, and the fact that at least a part of the acoustic waves reflected in the attenuation cavity sound 22 again passes through the sound absorption element 24 and again penetrates the air exhaust duct 21 makes it possible to accentuate the reduction in the spectral amplitude of the sound waves.
  • the acoustic attenuation element 24 is arranged completely outside the acoustic attenuation cavity 22. While remaining within the scope of protection of the invention, the element acoustic attenuation 24 could, in an alternative embodiment, extend partially inside the acoustic attenuation cavity 22. In this case, the part of the acoustic attenuation element extending partially to the interior of the acoustic attenuation cavity 22.
  • the interior of the acoustic attenuation cavity does not extend to the bottom of the acoustic attenuation cavity and remains at a distance from the bottom of the acoustic attenuation cavity to preserve between the bottom of the cavity sound attenuation and the sound attenuation element an empty volume.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Suction Cleaners (AREA)
EP22159745.3A 2021-03-08 2022-03-02 Hausstaubsauger, der mit einem schalldämpfenden hohlraum ausgestattet ist Active EP4056087B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2102224A FR3120296B1 (fr) 2021-03-08 2021-03-08 Aspirateur domestique équipé d’une cavité d’atténuation acoustique

Publications (3)

Publication Number Publication Date
EP4056087A1 true EP4056087A1 (de) 2022-09-14
EP4056087B1 EP4056087B1 (de) 2023-12-13
EP4056087C0 EP4056087C0 (de) 2023-12-13

Family

ID=75850313

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22159745.3A Active EP4056087B1 (de) 2021-03-08 2022-03-02 Hausstaubsauger, der mit einem schalldämpfenden hohlraum ausgestattet ist

Country Status (3)

Country Link
EP (1) EP4056087B1 (de)
CN (1) CN115089047A (de)
FR (1) FR3120296B1 (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2468350A1 (fr) * 1979-11-06 1981-05-08 Rommag P Woerwag & Co Aspirateur
JPH03272721A (ja) * 1990-03-20 1991-12-04 Matsushita Electric Ind Co Ltd 電気掃除機
EP1407659A1 (de) * 2002-10-11 2004-04-14 Jürgen Werner Radialgebläse für Laub- und Abfallsauger, Laubbläser oder Laubladegeräte
EP1905334A1 (de) * 2006-09-29 2008-04-02 Seb Sa Staubsauger mit einer Lärmdämpfungsvorrichtung
FR2967882A1 (fr) * 2010-11-25 2012-06-01 Seb Sa Corps principal d'aspirateur
DE102018118776A1 (de) * 2018-08-02 2020-02-06 Miele & Cie. Kg Staubsauger

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2468350A1 (fr) * 1979-11-06 1981-05-08 Rommag P Woerwag & Co Aspirateur
JPH03272721A (ja) * 1990-03-20 1991-12-04 Matsushita Electric Ind Co Ltd 電気掃除機
EP1407659A1 (de) * 2002-10-11 2004-04-14 Jürgen Werner Radialgebläse für Laub- und Abfallsauger, Laubbläser oder Laubladegeräte
EP1905334A1 (de) * 2006-09-29 2008-04-02 Seb Sa Staubsauger mit einer Lärmdämpfungsvorrichtung
FR2967882A1 (fr) * 2010-11-25 2012-06-01 Seb Sa Corps principal d'aspirateur
DE102018118776A1 (de) * 2018-08-02 2020-02-06 Miele & Cie. Kg Staubsauger

Also Published As

Publication number Publication date
FR3120296B1 (fr) 2023-02-10
EP4056087B1 (de) 2023-12-13
FR3120296A1 (fr) 2022-09-09
CN115089047A (zh) 2022-09-23
EP4056087C0 (de) 2023-12-13

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