EP2514346A2 - Tête aspirante pour une buse d'un aspirateur de sol - Google Patents

Tête aspirante pour une buse d'un aspirateur de sol Download PDF

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Publication number
EP2514346A2
EP2514346A2 EP12163955A EP12163955A EP2514346A2 EP 2514346 A2 EP2514346 A2 EP 2514346A2 EP 12163955 A EP12163955 A EP 12163955A EP 12163955 A EP12163955 A EP 12163955A EP 2514346 A2 EP2514346 A2 EP 2514346A2
Authority
EP
European Patent Office
Prior art keywords
suction
suction head
nozzle
suction channel
channel
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.)
Withdrawn
Application number
EP12163955A
Other languages
German (de)
English (en)
Other versions
EP2514346A3 (fr
Inventor
Michael Back
Thomas GÖPPNER
Mahbiz Hasheminia
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP2514346A2 publication Critical patent/EP2514346A2/fr
Publication of EP2514346A3 publication Critical patent/EP2514346A3/fr
Withdrawn legal-status Critical Current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
    • 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

Definitions

  • the present invention relates to vacuum cleaner nozzles, and more particularly to suction cups for a nozzle of a canister vacuum.
  • vacuum cleaners in addition to the performance of the vacuum cleaner in recent time often taken into account the noise emissions of the vacuum cleaner. It is particularly necessary to take measures to reduce noise so that the performance of the vacuum cleaner is not affected. Measures to reduce noise emissions can be made on different components of a vacuum cleaner, such as the engine or on the air-conducting parts, such as the suction cups, by means of which the contaminated air is absorbed by the surface to be cleaned.
  • suction heads of vacuum cleaners for example, a nozzle sole, which is placed on the surface to be cleaned, such as a carpet or a smooth floor, and by means of which the impurity or the air is absorbed.
  • the European patent application EP2060219 A2 proposes to reduce the flow noise on the suction head of a nozzle of a vacuum cleaner parts of the flowing air, in particular from opposite ends of the suction channel, bypassing the suction channel to be transported by auxiliary channels and only after the suction channel to unite with the other air fractions. This is supposed to be the occurrence of noise due to turbulent flows and turbulence reduce, as can occur, for example, at the edges of the suction head, where air from different flow directions meet.
  • a suction head with a nozzle sole for placing the suction head on a surface to be cleaned has a specially shaped, extending in a longitudinal direction along the suction head suction channel.
  • the suction channel is down, that is opened to the nozzle sole and serves to suck the polluted air.
  • the suction channel has a special, the suction channel bounding surface contour, i. a boundary surface of the suction channel is shaped as described below.
  • the boundary of the suction channel or its surface contour increases obliquely at the suction channel ends of the suction channel opposite the longitudinal direction up to a suction channel section extending essentially parallel to the nozzle sole.
  • the air flowing from the side, ie parallel or antiparallel to the longitudinal direction into the suction channel is thus guided by a run-on slope so that it undergoes no abrupt changes in direction, as would be the case for example when using a plate or a web to the end of the suction channel. This can effectively prevent the occurrence of high turbulence and the associated noise emissions.
  • the slope or angle between the surface contour of the suction channel and the nozzle sole at the Saugkanalende between 30 ° and 50 °, preferably between 32 ° and 38 ° and more preferably about 35 °.
  • the choice of such an angle makes it possible on the one hand to prevent the occurrence of flow noise and on the other hand a sufficiently rapid increase in the volume or the active cross section of the suction channel, so that the suction power is maintained.
  • an edge between the suction channel ends and the end or the longitudinal end of the suction head is wider than about 2% of the total width of the suction head.
  • the broadening of the edge or path along its air flowing in from the side into the suction channel reduces the formation of noise-modulating turbulent flows. For example, with a width of the suction head between 240 and 180 mm, this effect can be achieved if the edge is wider than 2% of the width of the suction head.
  • the rim may have a width between 5mm and 20mm, and preferably between 6.5mm and 12.5mm, to achieve noise reduction.
  • suction cups according to the invention are extremely quiet in operation without causing a significant reduction in suction power. This is achieved in some embodiments, in that a jump in height from the nozzle sole (the suction edge) to the channel boundary surface or to the surface contour of the suction channel is carried out in a flow-optimized manner and not abruptly sloping.
  • the statement that the surface contour of the suction channel rises obliquely from the nozzle sole to a suction channel section extending essentially parallel to the nozzle soleature does not of course mean that this increase must take place in the form of a flat surface. Rather, the angle of the contour with respect to the nozzle sole can also change during the rise. The angles mentioned above by way of example should therefore be understood to occur at least at the immediate boundary between the nozzle sole and the contour of the suction channel adjacent to the nozzle sole.
  • FIG. 1 shows an embodiment of a suction head 2. It will not be discussed in more detail in the following description of the individual components or structures that form the housing 3 of the suction head 2, since their operation in view of the noise reduction considered here is secondary.
  • the suction head 2 has a nozzle sole 4, by means of which the suction head 2 is placed on a surface to be cleaned, for example on the ground.
  • the nozzle sole 4 is in the embodiment shown substantially planar, as from the bottom view in FIG. 2 or from the in FIG. 3 shown perspective view also shows.
  • the suction channel 8 extends in a longitudinal direction 6, so that when the suction head 2 is moved in the direction perpendicular to the longitudinal direction 6 from the suction channel 8, the surface to be cleaned is swept over.
  • the polluted air is announced via the suction channel 8 when the suction head 2 is connected via the cylindrical connection 10 for the suction pipe with a blower motor of a vacuum cleaner.
  • the suction channel 8 has at its opposite in the longitudinal direction 6 Saugkanalenden 12a and 12b on a shape or a surface contour, which is optimized to avoid flow noise.
  • the surface contour runs from the nozzle sole 4 to a substantially parallel to the nozzle sole 4 extending Suction channel section 14 obliquely, whereby the laterally (in and against the longitudinal direction) incoming air is prevented from causing high comfort affecting flow noise. This is achieved in particular by the fact that the height jump from the nozzle sole to the channel boundary surface in the suction channel section 14 is optimized for flow and is not designed to drop abruptly.
  • the suction channel 8 opens in the central region in a suction volume 16, which in the present case has an approximately rectangular cross-section and is followed directly by the cylindrical connection 10 for the suction pipe.
  • a suction volume 16 which in the present case has an approximately rectangular cross-section and is followed directly by the cylindrical connection 10 for the suction pipe.
  • an angle 18 between the nozzle base 4 and the inner boundary surface of the suction channel 8 at the Saugkanalenden 12a and 12b in about 35 °, which on the one hand ensures that quickly the maximum volume of the suction channel is achieved in the Saugkanalabbalden 14 and on the other sufficient is flat to effectively prevent flow noise.
  • Angles 18 between 30 ° and 50 ° have been shown to be equally effective.
  • the width of the edge 20 is in the in FIG. 1 exemplified suction head a total width of about 268 mm, for example, about 9.6 mm.
  • Such a dimensioned rim 20 additionally prevents the laterally inflowing air from undergoing abrupt deflections along a path 22 from outside the suction head to the suction channel ends 12a and 12b, which in turn reduces noise emissions.
  • 4 wheels 26a and 26b are arranged on the nozzle sole, which lie between the suction channel 8 and the front of the suction head 2 and allow a comfortable lead the suction head over a surface.
  • two further rollers 28a and 28b are arranged on the nozzle sole 4.
  • the nozzle bottom 4, a brush 30 which can be extended during operation on a smooth floor of the nozzle sole 4 in order to increase the cleaning performance.
  • FIG. 4 shows a diagram illustrating the acoustic improvements that can be achieved by the inventive concept.
  • Diagram shows the frequency in Hertz on the X-axis and the sound pressure in dB (A) on the Y-axis, where the measurement was done with carpet as floor covering.
  • Counts 32 and 34 are a comparison of the noise emissions of the Figures 1-3 Suction head shown (Graf 32) and a conventional suction head, the suction channel has no run-on slope in the lateral direction. How out FIG. 4 directly apparent, the noise emission can be reduced by 5 dB by the inventive concept, especially in a perceived as particularly disturbing frequency range between 500 and 2000 Hz, which brings a significant reduction in noise pollution by the vacuum cleaner nozzle or the suction head with it.
  • suction cups according to the invention are extremely quiet in operation without causing a significant reduction in suction power. This is achieved in some embodiments, in that a jump in height from the nozzle sole (the suction edge) to the channel boundary surface or to the surface contour of the suction channel is carried out in a flow-optimized manner and not abruptly sloping.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Electric Suction Cleaners (AREA)
EP12163955.3A 2011-04-21 2012-04-12 Tête aspirante pour une buse d'un aspirateur de sol Withdrawn EP2514346A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011007889A DE102011007889A1 (de) 2011-04-21 2011-04-21 Saugkopf für eine Düse eines Bodenstaubsaugers

Publications (2)

Publication Number Publication Date
EP2514346A2 true EP2514346A2 (fr) 2012-10-24
EP2514346A3 EP2514346A3 (fr) 2016-12-14

Family

ID=46045772

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12163955.3A Withdrawn EP2514346A3 (fr) 2011-04-21 2012-04-12 Tête aspirante pour une buse d'un aspirateur de sol

Country Status (2)

Country Link
EP (1) EP2514346A3 (fr)
DE (1) DE102011007889A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050262662A1 (en) 2004-05-28 2005-12-01 New Ermes Europe S.P.A., Suction nozzle for vacuum cleaner or the like with detachable suction duct
DE202005020767U1 (de) 2004-06-08 2006-07-06 Seb S.A. Staubsauger-Saugvorrichtung
EP1776908A2 (fr) 2005-10-21 2007-04-25 Samsung Gwangju Electronics Co., Ltd. Un suceur pour un aspirateur
EP2060219A2 (fr) 2007-11-16 2009-05-20 Samsung Electronics Co., Ltd. Aspirateur

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050262662A1 (en) 2004-05-28 2005-12-01 New Ermes Europe S.P.A., Suction nozzle for vacuum cleaner or the like with detachable suction duct
DE202005020767U1 (de) 2004-06-08 2006-07-06 Seb S.A. Staubsauger-Saugvorrichtung
EP1776908A2 (fr) 2005-10-21 2007-04-25 Samsung Gwangju Electronics Co., Ltd. Un suceur pour un aspirateur
EP2060219A2 (fr) 2007-11-16 2009-05-20 Samsung Electronics Co., Ltd. Aspirateur

Also Published As

Publication number Publication date
EP2514346A3 (fr) 2016-12-14
DE102011007889A1 (de) 2012-10-25

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