EP2944242B1 - Tête d'aspiration pour aspirateur ou analogue dotée de canal de plaque de base amélioré - Google Patents

Tête d'aspiration pour aspirateur ou analogue dotée de canal de plaque de base amélioré Download PDF

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Publication number
EP2944242B1
EP2944242B1 EP15167570.9A EP15167570A EP2944242B1 EP 2944242 B1 EP2944242 B1 EP 2944242B1 EP 15167570 A EP15167570 A EP 15167570A EP 2944242 B1 EP2944242 B1 EP 2944242B1
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EP
European Patent Office
Prior art keywords
channel
base plate
suction head
angle
suction
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.)
Active
Application number
EP15167570.9A
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German (de)
English (en)
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EP2944242A1 (fr
Inventor
Riccardo Roschi
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.)
New Ermes Europe SRL
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New Ermes Europe SRL
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Priority to PL15167570T priority Critical patent/PL2944242T3/pl
Publication of EP2944242A1 publication Critical patent/EP2944242A1/fr
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Publication of EP2944242B1 publication Critical patent/EP2944242B1/fr
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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

Definitions

  • the present invention relates to a suction head to be mounted on an electric household appliance for performing cleaning by means of suction, such as a vacuum cleaner, an electric broom or a multi-purpose suction cleaning drum, for removing dust and/or fluids and/or dirt from a surface.
  • suction such as a vacuum cleaner, an electric broom or a multi-purpose suction cleaning drum
  • the present invention relates to a suction head with a base plate having an improved base plate channel which provides optimum suction and silence level characteristics.
  • a vacuum cleaner, an electric broom or a similar electric household appliance for performing cleaning by means of suction comprises a suction head for removing dust, dirt or fluids from a surface.
  • a suction head is generally referred to by the term “brush” or “nozzle”.
  • the terms “suction head” and “brush” or “nozzle” are considered to be equivalent.
  • the term “vacuum cleaner” will be used with a broad meaning so as to include all those apparatus, for professional or domestic use, which perform cleaning by means of suction. Therefore, the term “vacuum cleaner” will comprise a vacuum cleaner, an electric broom, a so-called multi-purpose suction cleaning drum, a centralized suction system for domestic or industrial use and a steam emission and suction apparatus.
  • a known brush comprises a base plate shaped so as to have at least one base plate channel open towards a surface to be cleaned, a suction channel which, during use, is formed together with the base plate and is in fluid communication with the base plate, and optionally a covering body which can be connected to the base plate / suction channel assembly.
  • the other end of the suction channel communicates with a suction tube usually via a rotatable joint.
  • suction heads in which the suction channel, during use, is formed together with the covering body.
  • WO 2005/074778 A1 relates to a vacuum cleaner nozzle comprising a nozzle body in which a suction plate, having an elongated suction opening, is rotatably arranged about an axis that is mainly parallel to the suction opening and mainly transverse to the direction of movement of the nozzle.
  • the suction plate is connected to a nozzle outlet, such that the suction opening is in fluid communication with the nozzle outlet, and the nozzle body is provided with at least two wheels that are spaced apart as seen in the direction of movement of the nozzle.
  • the wheels are positioned such that a gap is created between the suction opening and the surface to be cleaned.
  • WO 02/26098 A1 describes a tool to be used for cleaning a floor by means of suction.
  • the tool comprises a plate having a suction channel which extends across the tool transversely with respect to the direction in which the tool is displaced across the surface of the floor.
  • a first and second working edge connect the transversely extending sides of the suction channel.
  • Two suction openings, each with a perpendicular wall, are provided. The two openings do not form closed channels.
  • US-A-20050262659 discloses a suction head for a vacuum cleaner.
  • the invention relates to a suction head for a vacuum cleaner or the like comprising a base plate with a base plate channel open towards a surface to be cleaned and closed by an opposite bottom surface,
  • the magnitude of the first angle is about 7° and the magnitude of the second angle is about 2°.
  • an intermediate part of the channel has a depth which decreases at a third angle comprised between 5° and 8°.
  • the covering body is not shown.
  • the pedal and the associated control mechanism for moving a bristled support or a rubber fin which might be present in some embodiments are likewise not shown.
  • the suction head is denoted overall by the reference number 1.
  • the suction head 1 comprises a base plate 2 with at least one base plate channel 3 open downwards, a curved and suitably shaped suction channel 4 and a rotatable joint 5 rotating about an axis 6.
  • the assembly consisting of the channel 3, the channel 4 and the joint 5 forms the suction duct 7.
  • the base plate 2 and the base plate channel 3 are described in greater detail hereinbelow.
  • Figure 2a shows, more fully, the reference numbers of the base plate 2 and the associated channel 3.
  • the base plate 2 has a more or less rectangular shape with rounded corners. It has a greater dimension (length) L2 and a smaller dimension (width) W2.
  • the channel 3 of the base plate extends substantially parallel to the length L2 of the base plate 2.
  • the base plate channel 3 extends substantially over the entire length L2 of the base plate, from one end to the other.
  • the shape of the base plate channel 3, in plan view, has a front edge 31 which is substantially straight and parallel to the front edge 21 of the base plate 2.
  • the rear edge 32 of the base plate channel 3 is parallel to the rear edge 22 of the base plate along its entire length L2 except for the ends 33 which are inclined towards the front edge 31 such that the width of the base plate channel 3 gradually diminishes.
  • the minimum width of the base plate channel is between 40% and 60% of its maximum width.
  • the maximum width W32 of the base plate channel 3 is between 5% and 7% of the length L2 of the base plate channel 3.
  • the minimum width is substantially 50% of the maximum width.
  • the minimum width of the base plate channel at the ends 33 is about 8.22 mm.
  • Each of the two end sections 33 of the base plate channel 3 with decreasing width has a length L33 (measured parallel to the front edge 21) comprised between 9% and 13% of the length of the base plate channel. Preferably it is equal to about 11.7%. In the embodiment in which the length L2 of the base plate is 253 mm, each of the sections L33 measures about 29 mm.
  • the front strip 34 between the front edge 21 of the base plate and the front edge 31 of the channel 3 has a smaller width and is inclined so that, during use, the suction head 1 may rotate downwards when pushed forwards.
  • the inclination ⁇ 34 of the front strip 34 is shown in Figure 4A1 .
  • the width W34 of the front strip 34 is relatively small.
  • it may be comprised between 3% and 5% of the width W2 of the suction head. In one embodiment it is about 4.3% of the width W2 of the suction head 2.
  • the width W34 of the front strip 34 may be equal to about 10.6 mm.
  • a narrow band 35 of velvety material or the like is provided in a central position. It may be glued to the front strip 34 and optionally inset in a cavity shown, for example, in Figure 4A1 .
  • the rear strip 36 between the rear edge 22 of the base plate and the rear edge 32 of the base plate channel 3 has a width W36 greater than the width W34 of the front strip 34.
  • the rear strip 36 has an inclined part 36' and a flat part 36". The inclined part 36' is configured so that, during use, the suction head 1 is able to rotate upwards when pulled backwards.
  • a narrow band 35 of velvety material or the like is provided in a central position. It may be glued to the rear strip W36 and optionally inset in a cavity shown, for example, in Figures 2 and 4A1 .
  • the Applicant conducted numerous tests while modifying various parameters and characteristics of a known suction head and discovered that one of the characteristics which most influence positively the suction efficiency and the silence level is the inclination ⁇ (beta) and ⁇ (gamma) of the walls 311, 321 of the base plate channel 3.
  • the angle of inclination ⁇ (beta) of the front wall 311 of the base channel must be greater than the angle ⁇ (gamma) of inclination of the rear wall 321.
  • the angles are calculated with respect to a vertical plane V, which is in turn perpendicular to the horizontal plane H in which the front edge 31 and the rear edge 32 of the channel 3 are arranged.
  • the angle ⁇ (beta) of the front wall is inclined by 5°-10° with respect to the vertical plane V.
  • the angle ⁇ (beta) is comprised between about 6° and 8°, and more preferably is about 7°.
  • the angle ⁇ (gamma) of the rear wall is inclined by 1°-3° with respect to the vertical plane V.
  • the angle ⁇ (gamma) is about 2°.
  • the angle ⁇ (beta) is greater than the angle ⁇ (gamma). More preferably, the angle ⁇ (beta) is at least twice the angle ⁇ (gamma). More preferably, the angle ⁇ (beta) is at least three times the angle ⁇ (gamma).
  • angles ⁇ and ⁇ are configured so that the walls 311 and 321 of the channel 3 converge upwards when the base plate 2 is in an operating configuration, with the channel 3 open towards the surface to be cleaned.
  • the radius which joins together the bottom 37 of the channel 3 and the corresponding side walls 311 and 321 is comprised between about 1 and 3 mm. In one embodiment it is about 2.5 mm.
  • the depth of the channel 3 is denoted generally by the letter D. Specific channel depths are indicated by the letter D followed by the reference number of the section where the depth is calculated.
  • the depth D of the channel 3 remains preferably substantially constant along a first section around the opening towards the suction channel 4, decreases gradually towards the ends with a predetermined inclination along a certain intermediate section and decreases more significantly along the end sections 33 as far as the ends of the base plate channel 3.
  • the first section with a substantially constant depth has a depth D2 which is about 6% of the length L2 of the brush.
  • the first section may have a depth D2 of about 15.5 mm, namely about 6.12% of the length L2 of the suction head.
  • the first section extends towards either end of the suction head over a length of about 15 mm measured from the edge 41 of the opening towards the suction channel 4.
  • the intermediate section extends towards either end of the suction head.
  • the inclined intermediate section starts from a distance of about 47 mm and terminates at a distance from the centre of about 107 mm. More generally, the intermediate section terminates at a distance from the centre of the suction head equal to about 85% of half the length (L2/2) of the suction head.
  • the intermediate section is inclined at an angle ⁇ (delta) of 5-8°, preferably 6-7° and even more preferably of about 6.5°.
  • the Applicant has carried out various tests to check the suction performance of the suction head according to the present invention.
  • the tests were carried out comparing a known suction head referred to by the trade abbreviation NE00 and commercially distributed by the same Applicant and regarded as being a suction head with optimum suction characteristics.
  • the suction head according to the invention improves the suction performance.
  • the greatest improvement of the suction performance was obtained with a flow of 25 l/s.
  • the suction performance increased from about 67% to about 80%, thereby improving by about 20%.
  • With an air flow of 30 l/s the improvement was about 5%, while with an air flow of 35 l/s the improvement was about 4%.

Landscapes

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

Claims (11)

  1. Tête d'aspiration (1) pour un aspirateur ou similaire comprenant une plaque de base (2) avec un canal de plaque de base (3) ouvert vers une surface à nettoyer et fermé par une surface inférieure (37) opposée,
    dans laquelle ledit canal (3) comprend un bord avant (31), un bord arrière (32), une paroi avant (311) qui s'étend à partir dudit bord avant (31), une paroi arrière (321) qui s'étend à partir dudit bord arrière (32) et une surface inférieure (37) qui ferme ledit canal (3) et raccorde ladite paroi avant (311) et ladite paroi arrière (321), dans laquelle une section dudit bord avant (31) est parallèle à une section respective dudit bord arrière (32),
    dans laquelle ladite paroi avant (311) est inclinée à un premier angle (β) par rapport à un plan vertical (V) qui est perpendiculaire à un plan horizontal (H) dans lequel le bord avant (31) et le bord arrière (32) dudit canal (3) sont agencés,
    dans laquelle ladite paroi arrière (321) du canal (3) est inclinée à un deuxième angle (γ) par rapport audit plan vertical (V),
    dans laquelle la grandeur dudit premier angle (β) représente au moins trois fois la grandeur dudit deuxième angle (γ),
    dans laquelle une partie intermédiaire dudit canal (3) a une profondeur (D) qui diminue à un troisième angle (δ),
    dans laquelle une bande avant (34) est inclinée à un angle (α34) de 12° à 18° par rapport à un plan horizontal défini par le bord avant (31) et le bord arrière (32) du canal de plaque de base (3),
    dans laquelle une bande arrière comprend une partie plate (36") et une partie inclinée (36') qui est inclinée à un angle (α36') de 12° à 18° par rapport au plan horizontal, et
    dans laquelle ledit canal de plaque de base (3) a des extrémités fermées.
  2. Tête d'aspiration (1) selon la revendication 1, dans laquelle la grandeur dudit premier angle (β) est comprise entre 6° et 8° et la grandeur dudit deuxième angle (γ) est comprise entre 1° et 3°.
  3. Tête d'aspiration (1) selon la revendication 1 ou 2, dans laquelle ledit troisième angle (δ) est compris entre 5° et 8°.
  4. Tête d'aspiration (1) selon l'une quelconque des revendications précédentes, dans laquelle la largeur maximum (W32) du canal (3) est comprise entre 5% et 7% d'une longueur (L2) du canal (3).
  5. Tête d'aspiration (1) selon l'une quelconque des revendications précédentes, dans laquelle ladite plaque de base (2) comprend une bande avant (34) entre un bord avant (21) de ladite plaque de base et le bord avant (31), dans laquelle ladite bande avant (34) est inclinée à un angle (α34) compris entre 12° et 18°.
  6. Tête d'aspiration (1) selon l'une quelconque des revendications précédentes, dans laquelle ladite plaque de base (2) comprend une bande arrière (36) entre un bord arrière (22) de ladite plaque de base et le bord arrière (32), dans laquelle ladite bande arrière (36) comprend une partie inclinée (36') qui est inclinée à un angle (α36') compris entre 12° et 18°.
  7. Tête d'aspiration (1) selon l'une quelconque des revendications précédentes, dans laquelle une largeur maximum (W32) dudit canal (3) est comprise entre 5% et 7% de la longueur (L2) dudit canal (3).
  8. Tête d'aspiration (1) selon la revendication 7, dans laquelle une largeur minimum dudit canal (3) est comprise entre 40% et 60% de ladite largeur maximum (W32).
  9. Tête d' aspiration (1) selon la revendication 1, dans laquelle ladite bande avant (34) comprend une bande étroite (35) de matériau en velours dans une position centrale.
  10. Tête d'aspiration (1) selon la revendication 1 ou 9, dans laquelle ladite partie inclinée (36') de ladite bande arrière comprend une bande étroite (35) de matériau en velours dans une position centrale.
  11. Tête d'aspiration (1) selon la revendication 9 ou 10, dans laquelle ladite bande étroite (35) de matériau en velours est encastrée dans une cavité.
EP15167570.9A 2014-05-14 2015-05-13 Tête d'aspiration pour aspirateur ou analogue dotée de canal de plaque de base amélioré Active EP2944242B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15167570T PL2944242T3 (pl) 2014-05-14 2015-05-13 Głowica ssąca do odkurzacza lub podobnego z ulepszonym kanałem płyty podstawowej

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI20140878 2014-05-14

Publications (2)

Publication Number Publication Date
EP2944242A1 EP2944242A1 (fr) 2015-11-18
EP2944242B1 true EP2944242B1 (fr) 2019-08-07

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ID=51179023

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15167570.9A Active EP2944242B1 (fr) 2014-05-14 2015-05-13 Tête d'aspiration pour aspirateur ou analogue dotée de canal de plaque de base amélioré

Country Status (6)

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EP (1) EP2944242B1 (fr)
DK (1) DK2944242T3 (fr)
ES (1) ES2753301T3 (fr)
HK (1) HK1214936A1 (fr)
HU (1) HUE046562T2 (fr)
PL (1) PL2944242T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11564544B2 (en) 2020-01-28 2023-01-31 New Ermes Europe S.R.L. Adapter device for a cordless electric vacuum cleaner

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUB20160903A1 (it) * 2016-02-19 2017-08-19 New Ermes Europe Srl Piastra di base per testa di aspirazione per aspirapolvere o simile
ITUA20162159A1 (it) 2016-03-31 2017-10-01 New Ermes Europe Srl Testa di aspirazione con canale di aspirazione perfezionato
ITUA20163223A1 (it) 2016-05-06 2017-11-06 New Ermes Europe Srl Testa di aspirazione con aderenza migliorata alla superficie da aspirare
US11224319B2 (en) 2017-12-11 2022-01-18 New Ermes Europe S.R.L. Base plate for a vacuum cleaner suction head for the suction of fine dust and large debris
CN108209719B (zh) * 2018-03-06 2019-11-29 美的集团股份有限公司 地刷结构及吸尘器
JP1641037S (fr) 2018-09-18 2019-09-09
USD953673S1 (en) 2020-02-17 2022-05-31 New Ermes Europe S.R.L. Head of a vacuum cleaner

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0023731D0 (en) 2000-09-28 2000-11-08 Notetry Ltd A floor tool
SE0400243D0 (sv) 2004-02-06 2004-02-06 Electrolux Ab Vacuum cleaner nozzie
ITMI20041075A1 (it) * 2004-05-28 2004-08-28 New Ermes Europe Spa Meccanismo perfezionato per movimentare un inserti di sfregamento-sollevamento in una testa di aspirazione per aspirapolvere
KR101457162B1 (ko) * 2007-11-16 2014-11-03 삼성전자 주식회사 진공청소기

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11564544B2 (en) 2020-01-28 2023-01-31 New Ermes Europe S.R.L. Adapter device for a cordless electric vacuum cleaner

Also Published As

Publication number Publication date
HUE046562T2 (hu) 2020-03-30
EP2944242A1 (fr) 2015-11-18
DK2944242T3 (da) 2019-11-11
ES2753301T3 (es) 2020-04-08
HK1214936A1 (zh) 2016-08-12
PL2944242T3 (pl) 2020-02-28

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