EP1925247A1 - Vacuum cleaner nozzle - Google Patents

Vacuum cleaner nozzle Download PDF

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Publication number
EP1925247A1
EP1925247A1 EP20070356168 EP07356168A EP1925247A1 EP 1925247 A1 EP1925247 A1 EP 1925247A1 EP 20070356168 EP20070356168 EP 20070356168 EP 07356168 A EP07356168 A EP 07356168A EP 1925247 A1 EP1925247 A1 EP 1925247A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
suction
connection zone
tube
sole
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
EP20070356168
Other languages
English (en)
French (fr)
Other versions
EP1925247B2 (de
EP1925247B1 (de
Inventor
Eric Marchal
Fabien David
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SEB SA
Original Assignee
SEB SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by SEB SA filed Critical SEB SA
Publication of EP1925247A1 publication Critical patent/EP1925247A1/de
Application granted granted Critical
Publication of EP1925247B1 publication Critical patent/EP1925247B1/de
Publication of EP1925247B2 publication Critical patent/EP1925247B2/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
    • 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
    • A47L9/0081—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
    • A47L9/24—Hoses or pipes; Hose or pipe couplings
    • A47L9/242—Hose or pipe couplings

Definitions

  • the present invention relates to a dust suction nozzle, and more particularly to the internal architecture of said nozzle.
  • the present invention aims to reduce the aeraulic noise generated by the passage of air in the nozzle
  • Figure 1 shows such a nozzle 100 in a cross section about halfway up.
  • the nozzle of triangular shape, has two lateral channels 102 open at one end and connected at their other end to a wide connection zone 104, itself connected to a conduit (not shown).
  • the radii of curvature of the connection zone, and in particular the radii 106 of the side walls are greater than 8 mm.
  • the present invention is achieved by means of a suction nozzle open to the surface to be cleaned by at least one suction channel arranged in the sole of the nozzle and extending substantially horizontally, said channel being connected by a connection zone, to a suction tube connected to the vacuum cleaner, said connection zone being delimited by walls, characterized in that that the side walls of said connection zone have a radius of curvature greater than 20 mm, and in that the tube connected to the connection zone is a flexible pipe.
  • the suction channels extend essentially horizontally, the sucked air then enters the suction tube through the side walls of the connection zone connecting a suction channel to the suction tube.
  • this effort is reinforced by the presence of the flexible tube at the joint, which allows to maintain a fluidic continuity regardless of the orientation of the nozzle.
  • a pipe provides torsional flexibility in all directions while maintaining a mechanical strength to sufficient depression.
  • This torsion takes the appearance of a relatively large arc of a radius, which is therefore favorable to the maneuverability of the suction head and to a quiet operation.
  • the suction tube connected to the connection zone, has a circular section whose inner diameter is substantially that of the successive ducts leading to the vacuum cleaner.
  • a connection tube whose diameter corresponds to diameter of the various ducts leading to the vacuum cleaner, acoustic phenomena related to section changes are avoided.
  • connection zone is delimited by two parts arranged one on the other, facilitating the implementation of the invention.
  • the lower part is preferably derived from the sole of the nozzle.
  • the upper part is attached by a screw or clipping system.
  • the upper part In order to avoid turbulence by the meeting of the suction flows, the upper part has a dome-shaped shape, the different curvatures of the part avoiding a detachment of the air knives during their passage in the connection zone.
  • the radii of curvature of the other walls of the connection zone are designed to limit the delamination of the blades of air, while avoiding increasing the size and decreasing the efficiency of the nozzle.
  • these radii of curvature are greater than 10 mm.
  • the flexible pipe is guided by two rigid lateral arms allowing a better comfort of use.
  • the nozzle comprises two suction channels connected to one another at the connection zone, for disposing said connecting zone at the central level of the nozzle.
  • the nozzle is preferably of triangular shape, the two channels extending along two sides of the triangle, an opening being made in the tip of the nozzle formed by the meeting of the two channels, said opening being made in the sole of the sucker.
  • the triangular shape allows to use a longer nozzle length than for a rectangular nozzle, to achieve the present invention, the large radius of curvature of the side walls of the connection area tending to move back the mouth of the connection tubing.
  • the opening in the tip of the nozzle is disposed in the axis of the suction tube connected to the connection zone, the architecture of the sole of the nozzle providing a direct connection between said opening and said tube.
  • direct connection is meant a straight line connection, so that some waste sucked through the opening in the nozzle tip penetrate directly into the tube connected to the connection area, without touching, or touching very little of the walls of the nozzle. Part of the air also follows this direct path between said opening and the rear duct.
  • the base of the triangular nozzle is set back relative to the lower level of the front portion of the sole defining in particular the suction channels.
  • This shrinkage between 4 and 7 mm, makes it easier to move the nozzle and to limit the regeneration of noise under the nozzle.
  • the present invention relates to a vacuum nozzle 1.
  • the nozzle is of triangular shape.
  • the present invention is not limited to this triangular shape, and can be implemented on a rectangular nozzle.
  • the nozzle 1 comprises a sole 2 on which a cover 4 is arranged.
  • Brushes 6 can be actuated in a vertical movement by a pedal 8 to allow the nozzle to be in contact with the ground via said brushes 6, as shown in FIG. that he is known in the field.
  • the nozzle also has wheels (not shown) movable vertically in openings 10 formed in the rear full part 12 of the sole, as shown in FIG. 4.
  • the triangular nozzle 1 has suction channels 13, 14 arranged along two of its sides.
  • the tip of the nozzle formed by the meeting of these two sides, has a front opening 16, in connection with the channels 13, 14, allowing suction in a direction substantially parallel to the surface to be cleaned.
  • Tear strips 18, 20 are arranged on either side of the suction channels, in the region of the tip of the nozzle.
  • the suction channels 13, 14 open at the sole 2 of the nozzle in contact with the soil to be cleaned and are connected, a Vogellic manner, to a connecting tube 22, via a connection zone 24
  • the connecting tube 22 is connected, by a suction pipe, such as the pipe 25, to a vacuum cleaner body, not shown, the vacuum cleaner having in particular a motor-fan capable of creating a suction flow of air.
  • the tube 22 is advantageously a flexible tube composed of a core in the form of a metal spring wire embedded in a plastic covering.
  • the deformation of such a tube advantageously replaces the ball joint type often encountered, the deformation being effected in an arc, which is favorable when a low noise generation is sought.
  • two side arms 23 connect the end of the tube 22, located outside the nozzle, to the rear base of the nozzle, said arms being hinged at this level.
  • Figure 5 shows an exploded perspective view of the nozzle.
  • the suction channels 13, 14 are closed, on the one hand by an internal structure made in part during the manufacture by molding of the sole, such as parts 130, 140, and on the other hand by an upper piece 30 in the form of a fin which is fixed on the sole 2 by screwing in suitable locations 32.
  • Other equivalent means, such as clips, may be used to bring the piece 30 onto the sole 2.
  • the part 30 has a front portion 42, as well as lateral extensions 33, 34 covering a portion of the channels 13, 14.
  • the upper part 30 defines, with an underlying part 40 coming from the soleplate 2, the connection zone 24 of the suction channels to the connecting tube 22.
  • the part 30 and the part 40 each have a connection connecting portion to the tube 22.
  • the latter preferably being of circular section, the part 30 and the part 40 have, respectively, at the rear, a curvature 39, 49 in a semicircle so that the assembly of the piece 30 on the sole 2 carries, in the rear part, a tube portion slightly smaller than the inner diameter of the tube 22, in order to easily connect said tube to the area thus formed. Maintaining the tube on the connection zone 24 can be achieved by any known means, such as for example a circlip.
  • side walls 240, 242 of the connection zone 24 have a large radius of curvature, greater than 20 mm, in order to limit airflow turbulence during operation.
  • connection zone is formed by the joining of the part 30 and the part 40.
  • These two subassemblies thus have side wall portions, respectively 36, 38 for the upper part 30, and 46, 48 for part 40, portions shown in Figures 7, 9 and 12.
  • Figure 8 shows another aspect of the invention, complementary to that previously explained. Indeed, as is clearly visible in this figure, as well as in Figures 9 to 11, the upper part 30 has a dome shape 50, that is to say that its upper wall has a lateral curvature 502 , as shown in Figure 8, and a longitudinal curvature 504, as shown in Figures 10 and 11 in particular.
  • This specific form allows optimum guidance of air and waste, as will be explained later.
  • the lateral extensions 33, 34 closing the suction channels have also been worked at their shape to present curvatures, such as a curvature 330, which promotes the flow of fluidity and ensures the seal between the upper piece 30 and the sole 2.
  • Figures 12 to 15 show the sole 2 of the nozzle, associated with the connecting tube 22.
  • this sole has a central portion 40 forming, with the upper part 30, the connecting zone 24.
  • This part 40 delimits, by its front zone 200, the front edges of the suction channels 13, 14.
  • the zone 200 is characterized in particular by its pointed shape, having a nose before 210 at the meeting of the two channels.
  • the front zone 200 has the most gentle specific curvatures possible in the direction of the suction channels, such as a curvature 212 at the longitudinal axis of the nozzle, so that to route air and waste with minimal turbulence.
  • the angle of attack ⁇ at the nose, for the air penetrating through the tip of the nozzle is advantageously less than 45 °, and preferably of the order of 35 °.
  • FIGS. 19 to 21 The different curvatures of the front zone 200 are shown in FIGS. 19 to 21, where a portion of the sole of the nozzle has been cut vertically to better visualize the zone 200.
  • the various figures show that the entire zone 200 is in a curve, without a rectilinear portion. from the anterior edge of the channels 13, 14 to the mouth of the tube 22.
  • the oblique directions F and G of suction also follow a curve along the portion of the corresponding zone 200.
  • the sole 2 defines the suction opening 16, in particular having an upper wall 202 curved with a radius r close to 10 mm, which is suitable for causing air to enter the nozzle without noise.
  • the opening 16 in the tip of the nozzle is in direct connection with the tube 22.
  • direct connection it is necessary to understand a connection in a straight line, such as the line xx 'shown in FIGS. 16.
  • the waste and the air entering through the opening 16 in the tip of the nozzle can thus reach the tube 22 without striking the wall, thanks to the tapered shape of the zone 200 and the curvature 212 of said zone.
  • the rear full portion 12 of the sole 2 of the nozzle which defines in a way the base of the nozzle, is not at the same level as the front portion of said sole defining in particular the channels of suction.
  • the shrinkage h of the solid part is of the order of 5 mm according to the example proposed and makes it possible to limit the force of displacement of the nozzle by the user, by reducing the friction of the solid zone on the ground, in particular on carpeted or carpeted floors. This withdrawal also makes it possible to reduce the level of regenerated noise under the rear full portion 12.
  • connection zone 24 via the side walls 240, 242.
  • the flow remains fairly fluid and laminar, the air thus having a strong tendency to stay in contact with these walls.
  • curvatures 502, 504 in the upper wall of the connecting piece 24 strongly avoid the turbulence phenomena that may result from the meeting of the fluxes from each channel.
  • This aspect is all the more important as part of the flow entering the tube 22 also comes from the opening 16 formed in the tip of the nozzle.
  • the shape of the dome 50 of the connection zone as well as the volume of this dome also helps to thin the flow.
  • the air and waste entering the nozzle through this opening 16 have a high speed, both because of the reduced size of this opening, the passage section is of the order of 0.5 cm 2 , only by the direct connection with the tube 22, as previously explained.
  • This high speed makes it possible to direct the flows coming from the channels 13, 14 while limiting the shocks between these two flows and the resulting noise.
  • connection zone In addition, the air and the waste, through the connection zone thus formed, penetrate directly into the connecting tube 22, a tube of substantially the same diameter as the pipe 25 leading the air and the waste to the vacuum cleaner.
  • the nozzle is "articulated" by the flexibility of the duct, which flexibility results in curvatures of the tube 22 in an arc, the flow of air and waste in the duct 22 is realized without abrupt variation of direction or section.
  • a nozzle according to the present invention allows a noise gain greater than 5 dBa, according to the engine speed.
  • the present invention in several of its aspects, can quite be applied to a nozzle of rectangular shape. Including the curvature of the side walls of the connection area, as well as the angle formed by the area defining the anterior portion of the channels can be implemented in a rectangular nozzle without greatly increasing the size, and in particular the length, of the nozzle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
EP07356168.0A 2006-11-23 2007-11-19 Vacuum cleaner nozzle Active EP1925247B2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0610265A FR2908972B1 (fr) 2006-11-23 2006-11-23 Suceur d'aspirateur.

Publications (3)

Publication Number Publication Date
EP1925247A1 true EP1925247A1 (de) 2008-05-28
EP1925247B1 EP1925247B1 (de) 2015-07-08
EP1925247B2 EP1925247B2 (de) 2021-07-21

Family

ID=38180089

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07356168.0A Active EP1925247B2 (de) 2006-11-23 2007-11-19 Vacuum cleaner nozzle

Country Status (2)

Country Link
EP (1) EP1925247B2 (de)
FR (1) FR2908972B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2457481A1 (de) * 2010-11-26 2012-05-30 Seb S.A. Saugdüse eines Saugers
CN105072964A (zh) * 2013-03-26 2015-11-18 Seb公司 包括光源的吸尘器吸头

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN217645116U (zh) 2019-06-26 2022-10-25 米沃奇电动工具公司 真空工具

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2235226A (en) * 1939-07-11 1941-03-18 Electrolux Corp Suction nozzle
DE19800388A1 (de) * 1998-01-08 1999-07-15 Wessel Werk Gmbh Saugkopf für Bodenstaubsauger
EP0930041A1 (de) * 1998-01-14 1999-07-21 Seb S.A. Saugluftführung in einem Staubsaugersaugkopf
FR2789880A1 (fr) * 1999-02-19 2000-08-25 Seb Sa Piece complementaire pour plaque de base d'un suceur d'aspirateur
US6421875B1 (en) * 2000-06-12 2002-07-23 Pro-Team, Inc. Vortex floor tool
US20050022340A1 (en) * 2003-08-01 2005-02-03 Hafling Danielle M. Nozzle assembly with high efficiency agitator cavity
EP1520503A1 (de) * 2003-10-01 2005-04-06 Seb S.A. Staubsaugerdüse
WO2005074778A1 (en) * 2004-02-06 2005-08-18 Aktiebolaget Electrolux Vacuum cleaner nozzle
FR2871046A1 (fr) * 2004-06-08 2005-12-09 Seb Sa Suceur d'aspirateur
FR2877203A1 (fr) * 2004-11-03 2006-05-05 Samsung Kwangju Electronics Co Ensemble d'orifices d'aspiration d'aspirateur

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191327539A (en) 1913-11-29 1914-08-07 Walter Greenwood Doty Vacuum Sweepers.
US5189757A (en) 1991-10-31 1993-03-02 Williams William H Head assembly for a vacuum cleaning apparatus
RU1U1 (ru) † 1993-07-01 1994-06-25 Напетваридзе С.О. Устройство для облесения крутых горных склонов
DE19624360B4 (de) 1996-06-19 2005-05-12 Wessel-Werk Gmbh Saugkopf an einem Staubsauger
GB2346076B (en) 1999-01-28 2003-01-08 Numatic Int Ltd Vacuum cleaner nozzle
US6510584B2 (en) 2001-01-12 2003-01-28 Royal Appliance Mfg. Co. Flow cut-off and brushroll shut-off mechanism for vacuum cleaner

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2235226A (en) * 1939-07-11 1941-03-18 Electrolux Corp Suction nozzle
DE19800388A1 (de) * 1998-01-08 1999-07-15 Wessel Werk Gmbh Saugkopf für Bodenstaubsauger
EP0930041A1 (de) * 1998-01-14 1999-07-21 Seb S.A. Saugluftführung in einem Staubsaugersaugkopf
FR2789880A1 (fr) * 1999-02-19 2000-08-25 Seb Sa Piece complementaire pour plaque de base d'un suceur d'aspirateur
US6421875B1 (en) * 2000-06-12 2002-07-23 Pro-Team, Inc. Vortex floor tool
US20050022340A1 (en) * 2003-08-01 2005-02-03 Hafling Danielle M. Nozzle assembly with high efficiency agitator cavity
EP1520503A1 (de) * 2003-10-01 2005-04-06 Seb S.A. Staubsaugerdüse
FR2860413A1 (fr) 2003-10-01 2005-04-08 Seb Sa Suceur d'aspirateur
WO2005074778A1 (en) * 2004-02-06 2005-08-18 Aktiebolaget Electrolux Vacuum cleaner nozzle
FR2871046A1 (fr) * 2004-06-08 2005-12-09 Seb Sa Suceur d'aspirateur
FR2877203A1 (fr) * 2004-11-03 2006-05-05 Samsung Kwangju Electronics Co Ensemble d'orifices d'aspiration d'aspirateur

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2457481A1 (de) * 2010-11-26 2012-05-30 Seb S.A. Saugdüse eines Saugers
FR2967883A1 (fr) * 2010-11-26 2012-06-01 Seb Sa Suceur d’aspirateur
CN105072964A (zh) * 2013-03-26 2015-11-18 Seb公司 包括光源的吸尘器吸头
KR20150135404A (ko) * 2013-03-26 2015-12-02 세브 에스.아. 광원을 포함하는 진공청소기용 흡입기

Also Published As

Publication number Publication date
EP1925247B2 (de) 2021-07-21
FR2908972A1 (fr) 2008-05-30
EP1925247B1 (de) 2015-07-08
FR2908972B1 (fr) 2010-11-05

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