EP4385377A1 - Absaugvorrichtung für haushaltsstaubsauger - Google Patents

Absaugvorrichtung für haushaltsstaubsauger Download PDF

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Publication number
EP4385377A1
EP4385377A1 EP23214781.9A EP23214781A EP4385377A1 EP 4385377 A1 EP4385377 A1 EP 4385377A1 EP 23214781 A EP23214781 A EP 23214781A EP 4385377 A1 EP4385377 A1 EP 4385377A1
Authority
EP
European Patent Office
Prior art keywords
air
suction device
sound absorption
absorption element
inlet opening
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.)
Pending
Application number
EP23214781.9A
Other languages
English (en)
French (fr)
Inventor
Bruno Vaganay
Anne-Marie OUZAZNA
Patrick Morin
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
Publication of EP4385377A1 publication Critical patent/EP4385377A1/de
Pending legal-status Critical Current

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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
    • 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
    • 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
    • A47L9/02—Nozzles
    • 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
    • A47L9/22—Mountings for motor fan assemblies
    • 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
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means

Definitions

  • the present invention relates to the field of domestic vacuum cleaners making it possible to vacuum up dust and waste present on a surface to be cleaned, which may for example be tiles, parquet, laminate, carpet or a rug.
  • Such a configuration of the suction device generates significant turbulence upstream of the air inlet opening and therefore the flow of a turbulent air flow through the air inlet opening of the engine suction.
  • the noise generated by the air flow circulating upstream of the suction motor turns out to be significant, as is the noise generated by the suction motor, which is a source of discomfort for the user.
  • such turbulence induces high pressure losses within the suction device, and therefore has a detrimental impact on the suction performance of the suction device.
  • the present invention aims to remedy all or part of these drawbacks.
  • the technical problem underlying the invention consists in particular of providing a suction device which is simple and economical in structure, while limiting the noise generated by such a suction device and while presenting improved suction performance.
  • said at least one through orifice has a diameter which is such that the section of the through orifice covers several air passage openings.
  • the presence of the sound absorption element limits turbulence upstream of the air inlet opening and homogenizes the air flow circulating around the periphery of the air inlet opening and in the direction of the air inlet opening. inside the suction motor. The noise generated by the air flow circulating upstream of the suction motor is thus reduced by the elimination of this turbulence.
  • the air flow, passing through the sound absorption element then the air passage openings provided on the air intake part, is made uniform at the entrance to the fan blades fitted to the motor. suction.
  • the combination of the sound absorption element and the perforated air intake part (which then form a sort of Helmholtz resonator) makes it possible to attenuate the amplitude of the sound waves, which propagate upstream of the suction motor, over a significant frequency spectral band.
  • the specific configuration of the suction device according to the present invention makes it possible to significantly reduce the noise generated by the aeraulic flow flowing through the suction device and the noise generated by the suction motor, while limiting the pressure losses generated within the suction device.
  • the presence of the at least one through orifice also makes it possible to avoid any blockage of the air flow through the sound absorption element in the event of clogging of the latter.
  • the suction device may also have one or more of the following characteristics, taken alone or in combination.
  • the at least one through orifice is of cylindrical or frustoconical shape.
  • the at least one through orifice has a circular section.
  • the first face of the sound absorption element bears against the air intake part.
  • the sound absorption element has a maximum transverse dimension which is greater than the maximum transverse dimension of the air intake part.
  • the sound absorption element has a maximum transverse dimension which is greater than the diameter of the air inlet opening.
  • the sound absorption element has a generally rectangular shape.
  • the air intake part is substantially planar and has a generally circular shape.
  • the air intake part and the air inlet opening are arranged substantially coaxially.
  • Such a configuration of the suction device makes it possible to attenuate the amplitude of the sound waves, which propagate upstream of the suction motor, over an even greater frequency spectral band.
  • the sound absorption element is an acoustic foam.
  • the sound absorption element is made of porous material with open cavities.
  • the sound absorption element is acoustically porous, and is advantageously made of acoustically porous material.
  • the first and second faces of the sound absorption element are substantially parallel.
  • the sound absorption element is generally parallelepiped.
  • the sound absorption element has a thickness of between 5 and 40 mm.
  • the at least one through orifice is located at least partly opposite the air inlet opening.
  • an orthogonal projection of the at least one through orifice on a reference plane which is perpendicular to the motor axis of the suction motor, is at least partly confused with an orthogonal projection of the air inlet opening on said reference plane.
  • the motor axis of the suction motor intersects with the at least one through orifice.
  • the at least one through orifice and the air inlet opening are arranged substantially coaxially.
  • Such a configuration of the suction device makes it possible to attenuate the amplitude of the sound waves, which propagate upstream of the suction motor, over an even greater frequency spectral band.
  • the at least one through orifice has a diameter of between 10% and 150%, and advantageously between 100% and 140%, of the diameter of the air inlet opening.
  • the ratio of the diameter of the at least one through orifice to the diameter of the air inlet opening is between 1 and 1.5, and for example between 1 and 1.35.
  • the through orifice has a passage section which is substantially identical to the passage section of the air inlet opening.
  • the at least one through orifice has a diameter of between 30 and 40 mm.
  • each air passage opening has a diameter of between 1 mm and 3 mm.
  • the air inlet opening and the air intake part are spaced from each other by a separation distance which is less than or equal to 2 cm.
  • the sound absorption element has a thickness greater than the separation distance.
  • the main casing comprises a receiving housing in which the sound absorption element is housed.
  • Such a configuration of the main casing ensures a stable position for the sound absorption element.
  • the main casing comprises a retaining wall extending around the air intake part and the sound absorption element, the air intake part and the retaining wall delimiting at least partly the receiving housing.
  • the retaining wall has a shape complementary to that of the sound absorption element.
  • Such a configuration of the main casing allows easy and inexpensive fixing of the sound absorption element on the main casing.
  • the retaining wall comprises a flow guide portion which is located upstream of the sound absorption element and which is configured to guide the air flow generated by the engine suction, towards the sound absorption element.
  • the flow guide portion converges towards the sound absorption element.
  • the retaining wall delimits an insertion opening opening into the receiving housing, the acoustic absorption element being configured to be inserted into the receiving housing via the opening of insertion.
  • the suction motor has a motor axis and the sound absorption element extends substantially perpendicular to the motor axis.
  • the suction motor comprises a fan and an electric motor configured to rotate the fan.
  • the suction device comprises an air evacuation circuit comprising at least one air evacuation opening provided on the main casing and through which the air flow generated by the suction motor is discharged to the outside of the suction device, and a air exhaust duct which fluidly connects an air outlet opening of the suction motor to the at least one air exhaust opening.
  • the air exhaust circuit further comprises a filtration element configured to filter the air flow flowing through the at least one air exhaust opening .
  • the sound absorption element comprises a single through orifice.
  • the sound absorption element could comprise several through holes.
  • Such through orifices can be distributed, for example regularly distributed, around the central axis of the air inlet opening.
  • the air intake part is formed by a perforated plate.
  • the suction device is configured such that at least part of the air flow, generated by the suction motor, flows through the element sound absorption and in the direction of the air passage openings.
  • the present invention further relates to a domestic vacuum cleaner, such as a canister vacuum cleaner, comprising a suction device according to the present invention.
  • the suction tip is arranged in a front part of the housing.
  • the suction motor is configured to generate an air flow through the suction nozzle and the air inlet opening.
  • the domestic vacuum cleaner comprises a waste separation and collection device located upstream of the suction motor and configured to retain waste transported by the air flow generated by the motor. aspiration.
  • the waste separation and collection device is removably mounted on the housing.
  • the waste separation and collection device is of the cyclonic type.
  • the domestic vacuum cleaner comprises a connecting conduit configured to fluidly connect an air outlet of the waste separation and collection device to the air passage openings provided on the main casing.
  • the at least one air exhaust opening is oriented towards the waste separation and collection device.
  • the sound absorption element is configured to extend substantially horizontally when the housing rests, for example by its wheels, on a horizontal surface.
  • the motor axis is configured to extend substantially vertically when the housing rests, for example by its wheels, on a horizontal surface.
  • upstream and downstream are defined in relation to the direction of flow of the air flow generated by the suction motor.
  • THE figures 1 to 8 represent a domestic vacuum cleaner 2, such as a canister vacuum cleaner, comprising in particular a housing 3, also called a vacuum cleaner body, comprising a suction nozzle 4 through which air carrying waste is intended to be sucked into the housing 3.
  • the suction nozzle 4 is arranged in a front part of the housing 3.
  • the housing 3 is equipped with wheels 5 to ensure the movement of the housing 3 on a surface to be cleaned.
  • the domestic vacuum cleaner 2 may also include a flexible hose (not shown in the figures) connected, for example in a removable manner, to the suction nozzle 4, and a suction accessory (not shown in the figures) such as , for example, a rigid telescopic tube which can receive, at its end opposite the flexible pipe, a removable suction head.
  • a flexible hose not shown in the figures
  • a suction accessory such as , for example, a rigid telescopic tube which can receive, at its end opposite the flexible pipe, a removable suction head.
  • the domestic vacuum cleaner 2 also includes a waste separation and collection device 6 which can for example be removably mounted on the housing 3.
  • the waste separation and collection device 6 is of the cyclonic type, and comprises a waste collection container 7, and a cyclonic separation chamber 8 which is annular and which is delimited externally by a side wall of the waste collection container 7.
  • the domestic vacuum cleaner 2 further comprises a suction device 9 which is housed in an engine compartment 11 delimited by the housing 3 and which is located downstream of the waste separation and collection device 6.
  • the suction device 9 comprises a main casing 12 delimiting an internal housing 13.
  • the main casing 12 comprises a lower fairing 12.1 and an upper fairing 12.2 assembled to one another by for example by screwing or clicking.
  • the main casing 12 comprises an air intake part 14, such as an air intake grille, fixed to the upper fairing 12.2 and provided with several air passage openings 15.
  • Each air passage opening air 15 can for example have a diameter of between 1 mm and 3 mm.
  • the air intake part 14 is planar and has a circular shape.
  • the air intake part 14 can for example be formed by a perforated plate attached to the upper fairing 12.2.
  • the domestic vacuum cleaner 2 comprises a connecting conduit 16 configured to fluidly connect an air outlet of the waste separation and collection device 6 to the air passage openings 15 provided on the main casing 12.
  • the suction device 9 further comprises a suction motor 17, also called a motor fan, which is arranged in the internal housing 13 of the main casing 12 and which comprises an air inlet opening 18 connected fluidly to the suction nozzle 4 and located opposite at least part of the air passage openings 15 provided on the air intake part 14.
  • a suction motor 17 also called a motor fan
  • the air intake part air 14 and the air inlet opening 18 are arranged coaxially.
  • the suction motor 17 is configured to generate a flow of air through the suction nozzle 4, the waste separation and collection device 6, the connecting conduit 16, the air passage openings 15 and the air inlet opening 18.
  • the suction motor 17 comprises a fan 17.1 and an electric motor 17.2 configured to rotate the fan 17.1.
  • the suction motor 17 may further comprise a fan cover 19 at least partially covering the fan 17.1 and defining the air inlet opening 18.
  • the suction motor 17 also comprises at least one air outlet opening 20 through which the air flow is intended to leave the suction motor 17 and can flow into the internal housing 13.
  • the or each opening air outlet 20 can for example be provided in a lower part of the motor casing of the suction motor 17.
  • the suction motor 17 has a motor axis A which extends substantially vertically when the housing 3 rests, by its wheels 5, on a horizontal surface.
  • the suction device 9 also comprises a sound absorption element 21 fixed to the main casing 12 and arranged upstream of the air intake part 14.
  • the sound absorption element 21 is made of porous material, and for example of a porous material with open cavities.
  • the pores, also called cavities or cells, of the sound absorption element 21 are filled with air and function by dissipating the acoustic energy of the incident acoustic waves into heat in the structure of the porous material .
  • the sound absorption element 21 is an acoustic foam, such as a cellular polyurethane foam and in particular a open cell polyurethane foam.
  • the sound absorption element 21 can for example have a net density of between 26 and 30 kg/m 3 (measured according to the ISO 845 standard), a compressive strength at 40% depression of between 2.0 and 4.0 kPa (measured according to ISO 3386/1), a tensile strength of between 190 and 210 kPa (measured according to ISO 1798), and for example approximately 200 kPa, including elongation at break between 320 and 370% (measured according to the ISO 1798 standard), and for example approximately 350%, and a cell diameter of between 440 and 450 ⁇ m (measured according to the Recticel/T.013.4 method).
  • the main casing 12, and more particularly the upper fairing 12.2 comprises a retaining wall 22 extending from an exterior surface of the upper fairing 12.2 and extending around the part of air intake 14 and the sound absorption element 21.
  • the air intake part 14 and the retaining wall 22 delimit at least in part a receiving housing 23 in which the air intake element is housed. sound absorption 21.
  • the retaining wall 22 delimits an insertion opening 24 which opens into the receiving housing 23.
  • the sound absorption element 21 is configured to be inserted into the receiving housing 23 via the insertion opening 24.
  • the retaining wall 22 comprises a retaining portion 22.1 which extends substantially parallel to the motor axis A and which is configured to cooperate with the acoustic absorption element 21, and a guide portion of flow 22.2 which is located upstream of the sound absorption element 21 and which is configured to guide the air flow, generated by the suction motor 17, towards the sound absorption element 21.
  • the flow guide portion 22.2 converges in the direction of the retaining portion 22.1 and therefore in the direction of the acoustic absorption element 21.
  • the sound absorption element 21 extends perpendicular to the motor axis A, and is configured to extend horizontally when the housing 3 rests, for example by its wheels 5 , on a horizontal surface.
  • the sound absorption element 21 can for example be generally parallelepiped, and have a generally rectangular shape.
  • the sound absorption element 21 can for example have a thickness of between 5 and 40 mm.
  • the sound absorption element 21 comprises a first face 21.1 oriented towards the air passage openings 15 and a second face 21.2 opposite the first face 21.1.
  • the first and second faces 21.1, 21.2 of the sound absorption element 21 are substantially parallel, and the first face 21.1 of the sound absorption element 21 is supported, that is to say rests , against the air intake part 14 such that the sound absorption element 21 covers at least partly the air passage openings 15.
  • the suction device 9 is configured in such a way that at least part of the air flow, generated by the suction motor 17, flows through the sound absorption element 21 and towards the air passage openings 15.
  • the sound absorption element 21 comprises a single through orifice 25 which opens respectively into the first and second faces 21.1, 21.2 of the sound absorption element 21 and which is located in view of at least part of the air passage openings 15.
  • the through orifice 25 is of cylindrical shape and of circular section.
  • the through orifice 25 and the air inlet opening 18 are arranged coaxially.
  • the through orifice 25 can for example have a diameter of between 10% and 150% of the diameter of the air inlet opening 18.
  • the ratio of the diameter of the through orifice 25 to the diameter of the air inlet opening 18 is between 1 and 1.5, and more particularly between 1 and 1.35.
  • the through orifice 25 may have a passage section which is substantially identical, and for example identical, to the passage section of the air inlet opening 18.
  • the through orifice 25 may for example have a diameter comprised between 30 and 40 mm.
  • the air inlet opening 18 and the air intake part 14 are spaced apart from each other, and are separated by a separation distance which is less than or equal to 2 cm.
  • the sound absorption element 21 has a thickness greater than the separation distance.
  • the suction device 9 also comprises an air evacuation circuit 26 comprising an air evacuation opening 27 (see Figure 6 ) opening into an external surface of the main casing 12 and through which the air flow generated by the suction motor 17 is evacuated towards the outside of the suction device 9.
  • the air exhaust opening 27 is oriented towards the waste separation and collection device 6.
  • the air exhaust circuit 26 further comprises an air exhaust duct 28 which fluidly connects the internal housing 13, and therefore the air outlet opening 20 of the suction motor 17, to the air exhaust opening 27.
  • the air exhaust circuit 26 further comprises a filtration element 29 configured to filter the air flow flowing through the air exhaust opening 27.
  • the filtration element 29 can for example be housed at least partly in the air exhaust opening 27, and be located at the rear of the waste separation and collection device 6.
  • the sound absorption element 21 could comprise several through orifices 25 which each open respectively into the first and second faces 21.1, 21.2 of the sound absorption element 21.
  • Such orifices through-holes 25 can be distributed, for example regularly distributed, around the central axis of the air inlet opening 18.
  • Such through-holes 25 could also be arranged symmetrically with respect to a plane of symmetry passing through the central axis of the air inlet opening 18.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Electric Suction Cleaners (AREA)
EP23214781.9A 2022-12-16 2023-12-06 Absaugvorrichtung für haushaltsstaubsauger Pending EP4385377A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2213585A FR3143309A1 (fr) 2022-12-16 2022-12-16 Dispositif d’aspiration pour aspirateur domestique

Publications (1)

Publication Number Publication Date
EP4385377A1 true EP4385377A1 (de) 2024-06-19

Family

ID=85381435

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23214781.9A Pending EP4385377A1 (de) 2022-12-16 2023-12-06 Absaugvorrichtung für haushaltsstaubsauger

Country Status (3)

Country Link
EP (1) EP4385377A1 (de)
CN (1) CN118203259A (de)
FR (1) FR3143309A1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2403646A (en) * 2003-07-07 2005-01-12 Samsung Kwangju Electronics Co Motor assembly and vacuum cleaner having the same
EP2436291A1 (de) * 2009-05-29 2012-04-04 Kabushiki Kaisha Toshiba Elektrischer reiniger
EP4056087A1 (de) * 2021-03-08 2022-09-14 Seb S.A. Hausstaubsauger, der mit einem schalldämpfenden hohlraum ausgestattet ist

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2403646A (en) * 2003-07-07 2005-01-12 Samsung Kwangju Electronics Co Motor assembly and vacuum cleaner having the same
EP2436291A1 (de) * 2009-05-29 2012-04-04 Kabushiki Kaisha Toshiba Elektrischer reiniger
EP4056087A1 (de) * 2021-03-08 2022-09-14 Seb S.A. Hausstaubsauger, der mit einem schalldämpfenden hohlraum ausgestattet ist

Also Published As

Publication number Publication date
CN118203259A (zh) 2024-06-18
FR3143309A1 (fr) 2024-06-21

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