EP3010385A1 - Nozzle for a vacuum cleaner and vacuum cleaner - Google Patents

Nozzle for a vacuum cleaner and vacuum cleaner

Info

Publication number
EP3010385A1
EP3010385A1 EP13731101.5A EP13731101A EP3010385A1 EP 3010385 A1 EP3010385 A1 EP 3010385A1 EP 13731101 A EP13731101 A EP 13731101A EP 3010385 A1 EP3010385 A1 EP 3010385A1
Authority
EP
European Patent Office
Prior art keywords
suction opening
groove
suction
vacuum cleaner
nozzle
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
EP13731101.5A
Other languages
German (de)
French (fr)
Other versions
EP3010385B1 (en
Inventor
Lennart Carlsson
Bo Pilsmo
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.)
Electrolux AB
Original Assignee
Electrolux AB
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 Electrolux AB filed Critical Electrolux AB
Publication of EP3010385A1 publication Critical patent/EP3010385A1/en
Application granted granted Critical
Publication of EP3010385B1 publication Critical patent/EP3010385B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • A47L9/02—Nozzles
    • A47L9/06—Nozzles with fixed, e.g. adjustably fixed brushes or the like
    • A47L9/0606—Nozzles with fixed, e.g. adjustably fixed brushes or the like rigidly anchored brushes, combs, lips or pads
    • A47L9/0613—Nozzles with fixed, e.g. adjustably fixed brushes or the like rigidly anchored brushes, combs, lips or pads with means specially adapted for picking up threads, hair or the like, e.g. brushes, combs, lint pickers or bristles pads

Definitions

  • the present invention relates generally to the field of vacuum cleaners. More specifically, the present invention is related to a vacuum cleaner nozzle for cleaning carpets.
  • a vacuum cleaner is a device that uses a suction force generated by a fan unit to create a partial vacuum to suck up objects like dust, particles, fibres, hair etc. usually from floors and car ⁇ pets. Typically this is done with a vacuum cleaner nozzle, which is connected via a nozzle outlet to an extension tube and/or a suction hose to a dust compartment within the body of the vacuum cleaner.
  • the suction hose is normally engaged with a removable dust bag arranged inside the dust compartment for collecting dust and foreign materials that are sucked in through the vacuum cleaner nozzle when the vacuum cleaner is in an operative mode.
  • the dust laden air stream forwards the removed objects, via the hose, to the body of the vacuum cleaner in which the re ⁇ moved objects are separated from the air stream in the dust bag.
  • dust can be separated from the dust laden air stream using a cyclone or other suitable dust separating unit.
  • a known vacuum cleaner nozzle (WO 2010/095995 Al) comprises a suction plate having an inlet side and an outlet side.
  • the vacu ⁇ um cleaner nozzle further comprises an air duct having a duct wall extending through the suction plate from a suction opening on the inlet side to the outlet side.
  • a vacuum cleaner nozzle An essential requirement to be met by a vacuum cleaner nozzle is a high dust pick-up level on carpets. So, in general, the vacuum cleaner nozzle should be formed such, that a maximum dust pick- up level on carpets is reached. On the other hand, a maximiza ⁇ tion of the dust pick-up level leads to a high motion re ⁇ sistance, i.e. due to the suction force, the vacuum cleaner noz- zle can only be moved on the carpet with increased physical strength .
  • a drawback of known vacuum cleaning nozzles with a high dust pick-up level is the increased motion resistance which leads to a physically demanding cleaning of carpets. Accordingly, there is a need for improvements of existing vacuum cleaner nozzles in order to increase the dust pick-up level without any increase or with only limited increase of the motion resistance.
  • the invention is intended for battery powered vacuum cleaners as well as mains-operated vacuum cleaners.
  • the invention relates to vacuum cleaner nozzle comprising a suction plate having an inlet side and an outlet side, said suction plate comprising
  • said air duct extends through the suc ⁇ tion plate from a suction opening on the inlet side to the outlet side, the suction opening having a longitudinal shape extending with its longitudinal sides transversely to a cleaning direction;
  • first and second sealing edges for engaging with a surface being cleaned and for at least partly sealing said suction opening against said surface being cleaned, wherein the first and second sealing edges extend along at least a side portion of said suction opening at opposite sides of the suction opening,
  • At least one groove extends parallel to the longitudinal sides of the suction opening, the groove being formed in the suction plate by a recess in proximity to the suction opening and wherein the least one groove and the suction opening is sep ⁇ arated exclusively by the sealing edge.
  • the fibers of the carpet are gracing along the inlet side of the suction plate.
  • the carpet fibers are distorted.
  • the carpet fibers are able to at least partially recover their shape, i.e. the carpet fibers at least partially re-raise. Said shape-recovering causes an increased movement of the carpet fibers which yield in an op ⁇ timized removal of dust out of the carpet fibers.
  • the suction opening, the sealing edge and the least one groove are arranged in immediate succession.
  • the carpet fibers are re- distorted once again by means of the sealing edge.
  • the re-distorted carpet fibers arrive at the suction opening, at which the dust detached by the fiber movement is removed by the suction force.
  • the at least one groove is arranged with respect to a forward cleaning direction in front of the suction opening.
  • the carpet fibers first arrive at the groove which enhances the movement of the fibers. Following the groove, said fibers reach the suction opening for dust removal. Thereby, the groove located in front of the suction opening enhances the dust removal in a forward cleaning direction.
  • the at least one groove is arranged with respect to a forward cleaning direction behind the suction opening.
  • a pair of grooves is provided comprising a first groove in a forward cleaning direction in front of the suction opening and second groove behind the suction opening.
  • the dust removal is enhanced, regardless of the direction of movement of said vacuum cleaner nozzle.
  • the vacuum cleaner nozzle comprises a pair of first grooves with respect to a forward cleaning direction in front of the suction opening, wherein the grooves of the pair of grooves are arranged at different sides laterally adjacent to a first lint picker portion.
  • the vacuum cleaner nozzle comprises a pair of second grooves with respect to a forward cleaning direction behind the suction opening, wherein the grooves of the pair of grooves are arranged at different sides laterally adjacent to a second lint picker portion.
  • Said lint picker portions are adapted to receive lint pickers which typically comprise a strip of a material in which tufts of fine fiber are secured. The lint pickers attract dust from the surface being cleaned.
  • the sealing edges, respectively, the grooves are provided for enhancing the carpet fiber movement.
  • the at least one groove is free of any elements or installation.
  • the at least one groove constitutes a recess, in which the carpet fibers are able to be inserted.
  • the groove is integrally formed within the suction plate and comprises a suitable depth for re- ceiving the upper free ends of the carpet fibers.
  • the sealing edge separating the suction opening and the groove has a thickness of 1mm - 6mm, particularly 2mm, 3mm, 4mm or 5mm.
  • Fig. 1 shows a perspective view on the lower side of a vacuum cleaner nozzle according to the invention.
  • Fig. 2 shows a sectional view of the vacuum cleaner nozzle ac ⁇ cording to Fig. 1 along the narrow side of the vacuum cleaner nozzle.
  • Fig. 3 shows a vacuum cleaner according to an embodiment.
  • Fig. 1 and 2 illustrate an embodiment of a vacuum cleaner nozzle according to the present invention.
  • the vacuum cleaner nozzle 1 comprises a nozzle body, which is connected to a nozzle outlet.
  • the nozzle outlet is adapted for being connected to the suction hose of a vacuum cleaner (not shown) such that when the vacuum cleaner is in an operative mode, vacuum is created as air is sucked through the vacuum cleaner nozzle 1 via the hose to the vacuum cleaner.
  • a typical vacuum cleaner is well known by the skilled man and will not be described in fur ⁇ ther detail here.
  • the vacuum cleaner nozzle 1 comprises a suction plate 2.
  • the suction plate 2 is preferably a plastic part, which has been formed by means of, e.g. injection molding in one piece, a metal part, or a combination of plastic and metal.
  • the suction plate 2 has an inlet side 2.1 and an outlet side 2.2, and there is an air duct 3 extending from the inlet side 2.1 to the outlet side 2.2.
  • the air duct 3 forms a suction open- ing 4.
  • the suction opening 4 has, in this exemplifying embodiment, a substantially rectangular shape and has a first longitu ⁇ dinal side 4.1 and a second longitudinal side 4.2.
  • the first longitudinal side 4.1 and the second longitudinal side 4.2 are separated a distance which is herein after referred to as the suction opening width w.
  • the suc- tion plate 2 is arranged such that the inlet side 2.1 is facing the surface being cleaned.
  • the longitu- dinal sides 4.1, 4.2 are perpendicular to the normal cleaning direction (CD), i.e. perpendicular to the movement of the vacuum cleaner nozzle 1 when it is being operated during vacuuming of a surface.
  • CD normal cleaning direction
  • the air duct 3 extends through the suction plate 2 to the outlet side 2.2.
  • the vacuum cleaner nozzle 1 further comprises a first sealing edge 5, 5' and a second sealing edge 5a, 5a' extending across the suction plate 2.
  • the first sealing edge 5, 5' and the second sealing edge 5a, 5a' extend perpendicular to the common cleaning direction CD and parallel to the first and se ⁇ cond longitudinal side 4.1, 4.2 of the suction opening 4.
  • the first sealing edge 5, 5' is ar ⁇ ranged in immediate vicinity to the first longitudinal side 4.1 of the suction opening 4 in the forward cleaning direction CD
  • first and second sealing edges 5, 5' , 5a, 5a' are typically formed as integrated parts of the suction plate 2, however in an alternative embodiment the suction plate 2 is provided with sealing edges, which are sepa ⁇ rate parts being mounted along the suction opening 4.
  • the first and second sealing edge 5, 5' , 5a, 5a' are constituted by pairs of sealing edges 5, 5', 5a, 5a' separated in a horizontal direction, i.e. the seal ⁇ ing edges 5, 5a are located at a first half of the vacuum clean- er nozzle 1 with respect to a first median plane MP1 parallel to the forward cleaning direction CD and the sealing edges 5' , 5a' are located at a second half of the vacuum cleaner nozzle 1 with respect to said first median plane MP1.
  • the pairs of sealing edges 5, 5' , 5a, 5a' are separated by first, respectively, se ⁇ cond lint picker portions 8, 9.
  • Said lint picker portions 8, 9 are arranged in parallel with the first sealing edge 5, 5' and the second sealing edge 5a, 5a' .
  • the lint picker portions 8, 9 are adapted to receive lint pickers.
  • Said lint pickers typically comprise a strip of a material in which tufts of fine fibre are secured. The lint pickers attract dust from the surface being cleaned, and the dust is further sucked in through the suction opening 4.
  • the first and second sealing edge may be formed by continuous sealing edges extending across substantially the full width of the suction plate 2.
  • the first sealing edge 5, 5' and the second sealing edge 5a, 5a' engages with the carpet.
  • the purpose of the sealing edges 5, 5', 5a, 5a' is to restrict the air flow from areas surrounding the active suction area of the vacuum cleaner nozzle 1 on soft surfaces, the active suction area typically being the area covered by the suction opening 4.
  • the sealing edges 5, 5', 5a, 5a' are active so as to agitate the fibers of a soft surface, e.g. carpet fibers, during the forward and backward movement of the vacuum cleaner nozzle 1 against the surface being cleaned.
  • the vacuum cleaner nozzle 1 comprises at least one groove 6, 6', 7, 7' extending parallel to the longitu ⁇ dinal sides 4.1, 4.2 of the suction opening 4.
  • the groove 6, 6', 7, 1' is formed in the suction plate 2 by a recess in proximity to the suction opening 4.
  • Said groove 6, 6', 7, 1' may have a groove base 11 disposed at a distance to the contact surface 10, at which the nozzle 1 stays in contact with the sur ⁇ face being cleaned.
  • the groove may be integrally formed within the suction plate 2.
  • the least one groove 6, 6', 7, 1' and the suction opening 4 is separated by upper-mentioned sealing edge 5, 5' , 5a, 5a' .
  • the first and second sealing edges 5, 5' , 5a, 5a' form the borders of the suction opening 4 and the least one groove 6, 6', 7, 1' is located in immediate vicinity to one of said sealing edges 5, 5' , 5a, 5a' .
  • the carpet fi ⁇ bers are able to at least partly revert back in their original position, i.e. the carpet fibers at least partially re-raise. Due to the further movement of the vacuum cleaner nozzle 1 said carpet fibers come into contact with the sealing edge 5, 5' , 5a, 5a' arranged behind said groove 6, 6', 7, 1' . Said sealing edge 5, 5' , 5a, 5a' forces the carpet fibers to turn down or distort ⁇ ed downwardly once again. Said deforming of the carpet fibers enhances the movement of the carpet fibers against each other. Said movement supports the peel-off of dust located within the carpet fibers .
  • the sealing edge 5, 5' , 5a, 5a' sepa ⁇ rating the groove 6, 6', 7, 1' from the suction opening 4 has a width between 1mm and 6mm.
  • Such a narrowly formed sealing edge 5, 5' , 5a, 5a' is advantageous, because the movement caused by the groove 6, 6', 7, 1' is remaining in the area of the suction opening 4, which leads to a further enhanced peel-off effect.
  • At least one groove 6, 6' is arranged with respect to the forward cleaning direction CD in front of the suction opening 4 and a further groove 7, 1' is arranged behind the suc ⁇ tion opening 4.
  • the arrangement of sealing edges 5, 5', 5a, 5a' and grooves 6, 6', 7, 1' is mirror inverted with respect to a second median plane MP2 perpendicular to the for- ward cleaning direction CD.
  • the grooves 6, 6', 7, 7' are formed as pairs of grooves separated in a horizontal direction, i.e.
  • the grooves 6, 7 are located at a first half of the vacuum cleaner nozzle 1 with respect to the first median plane MPl and the grooves 6', 1' are located at a second half of the vacuum cleaner nozzle 1 with respect to said first median plane MPl.
  • the pairs of grooves are separated by the first, re ⁇ spectively, second lint picker portion 8, 9.
  • Figure 3 illustrate a vacuum cleaner 100 comprising a nozzle 101 according to an embodiment.
  • the nozzle 101 may be connected to a main body 104 of the vacuum cleaner 100 via a tube 102 and a hose 103.

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

Abstract

The invention relates to a vacuum cleaner nozzle (1) comprising a suction plate (2) having an inlet side (2.1) and an outlet side (2.2), said suction plate (2) comprising - an air duct (3), wherein said air duct (3) extends through the suction plate (2) from a suction opening (4) on the inlet side (2.1) to the outlet side (2.2), the suction opening (4) having a longitudinal shape extending with its longitudinal sides transversely to a cleaning direction (CD); - first and second sealing edges (5) for engaging with a surface being cleaned and for at least partly sealing said suction opening (4) against said surface being cleaned, wherein the first and second sealing edges (5) extend along at least a side portion of said suction opening (4) at opposite sides of the suction opening (4), wherein at least one groove (6, 6', 7, 7') extends parallel to the longitudinal sides of the suction opening (4), the groove (6, 6', 7, 7') being formed in the suction plate (2) by a recess in proximity to the suction opening (4) and wherein the least one groove (6, 6', 7, 7') and the suction opening (4) is separated exclusively by the sealing edge (5).

Description

NOZZLE FOR A VACUUM CLEANER AND VACUUM CLEANER
The present invention relates generally to the field of vacuum cleaners. More specifically, the present invention is related to a vacuum cleaner nozzle for cleaning carpets.
BACKGROUND OF THE INVENTION A vacuum cleaner is a device that uses a suction force generated by a fan unit to create a partial vacuum to suck up objects like dust, particles, fibres, hair etc. usually from floors and car¬ pets. Typically this is done with a vacuum cleaner nozzle, which is connected via a nozzle outlet to an extension tube and/or a suction hose to a dust compartment within the body of the vacuum cleaner. The suction hose is normally engaged with a removable dust bag arranged inside the dust compartment for collecting dust and foreign materials that are sucked in through the vacuum cleaner nozzle when the vacuum cleaner is in an operative mode. Thus, the dust laden air stream forwards the removed objects, via the hose, to the body of the vacuum cleaner in which the re¬ moved objects are separated from the air stream in the dust bag. Alternatively, dust can be separated from the dust laden air stream using a cyclone or other suitable dust separating unit.
A known vacuum cleaner nozzle (WO 2010/095995 Al) comprises a suction plate having an inlet side and an outlet side. The vacu¬ um cleaner nozzle further comprises an air duct having a duct wall extending through the suction plate from a suction opening on the inlet side to the outlet side.
An essential requirement to be met by a vacuum cleaner nozzle is a high dust pick-up level on carpets. So, in general, the vacuum cleaner nozzle should be formed such, that a maximum dust pick- up level on carpets is reached. On the other hand, a maximiza¬ tion of the dust pick-up level leads to a high motion re¬ sistance, i.e. due to the suction force, the vacuum cleaner noz- zle can only be moved on the carpet with increased physical strength .
A drawback of known vacuum cleaning nozzles with a high dust pick-up level is the increased motion resistance which leads to a physically demanding cleaning of carpets. Accordingly, there is a need for improvements of existing vacuum cleaner nozzles in order to increase the dust pick-up level without any increase or with only limited increase of the motion resistance.
SUMMARY OF THE INVENTION
It is an objective of embodiments of the invention to provide for an improved nozzle for a vacuum cleaner and a vacuum cleaner with an improved dust pick-up level but with only a limited in¬ crease of motion resistance. The objective is solved by the fea¬ tures of the independent claims. Preferred embodiments are given in the dependent claims. If not explicitly indicated otherwise, embodiments of the invention can be freely combined with each other.
The invention is intended for battery powered vacuum cleaners as well as mains-operated vacuum cleaners. According to a first aspect of the invention, the invention relates to vacuum cleaner nozzle comprising a suction plate having an inlet side and an outlet side, said suction plate comprising
- an air duct, wherein said air duct extends through the suc¬ tion plate from a suction opening on the inlet side to the outlet side, the suction opening having a longitudinal shape extending with its longitudinal sides transversely to a cleaning direction;
- first and second sealing edges for engaging with a surface being cleaned and for at least partly sealing said suction opening against said surface being cleaned, wherein the first and second sealing edges extend along at least a side portion of said suction opening at opposite sides of the suction opening,
wherein at least one groove extends parallel to the longitudinal sides of the suction opening, the groove being formed in the suction plate by a recess in proximity to the suction opening and wherein the least one groove and the suction opening is sep¬ arated exclusively by the sealing edge.
Advantageously, when moving the vacuum cleaner nozzle with re- spect to a carpet, the fibers of the carpet are gracing along the inlet side of the suction plate. Thereby, the carpet fibers are distorted. In the area of the groove, the carpet fibers are able to at least partially recover their shape, i.e. the carpet fibers at least partially re-raise. Said shape-recovering causes an increased movement of the carpet fibers which yield in an op¬ timized removal of dust out of the carpet fibers.
According to preferred embodiments, the suction opening, the sealing edge and the least one groove are arranged in immediate succession. Thereby, after passing the groove causing a shape- recovering of the carpet fibers, the carpet fibers are re- distorted once again by means of the sealing edge. Subsequently, the re-distorted carpet fibers arrive at the suction opening, at which the dust detached by the fiber movement is removed by the suction force. Thus, an optimized dust removal is obtained.
According to preferred embodiments, the at least one groove is arranged with respect to a forward cleaning direction in front of the suction opening. When moving the vacuum cleaner nozzle in said forward cleaning direction (away from the user) , the carpet fibers first arrive at the groove which enhances the movement of the fibers. Following the groove, said fibers reach the suction opening for dust removal. Thereby, the groove located in front of the suction opening enhances the dust removal in a forward cleaning direction. According to preferred embodiments, the at least one groove is arranged with respect to a forward cleaning direction behind the suction opening. When moving the vacuum cleaner nozzle in a backward cleaning direction (towards the user) , the carpet fi- bers first arrive at the groove which enhances the movement of the fibers. Following the groove, said fibers reach the suction opening for dust removal. Thereby, the groove located behind the suction opening enhances the dust removal in a backward cleaning direction .
Preferably, a pair of grooves is provided comprising a first groove in a forward cleaning direction in front of the suction opening and second groove behind the suction opening. Thereby, the dust removal is enhanced, regardless of the direction of movement of said vacuum cleaner nozzle.
According to preferred embodiments, the vacuum cleaner nozzle comprises a pair of first grooves with respect to a forward cleaning direction in front of the suction opening, wherein the grooves of the pair of grooves are arranged at different sides laterally adjacent to a first lint picker portion. Similarly, the vacuum cleaner nozzle comprises a pair of second grooves with respect to a forward cleaning direction behind the suction opening, wherein the grooves of the pair of grooves are arranged at different sides laterally adjacent to a second lint picker portion. Said lint picker portions are adapted to receive lint pickers which typically comprise a strip of a material in which tufts of fine fiber are secured. The lint pickers attract dust from the surface being cleaned. Laterally next to the lint pick- er portions, the sealing edges, respectively, the grooves are provided for enhancing the carpet fiber movement.
According to preferred embodiments, the at least one groove is free of any elements or installation. Thereby, the at least one groove constitutes a recess, in which the carpet fibers are able to be inserted. Preferably, the groove is integrally formed within the suction plate and comprises a suitable depth for re- ceiving the upper free ends of the carpet fibers. By moving of said carpet fibers through the groove, the arrangement of fibers is changed at least partially causing a loosening of dust from the fibers .
According to preferred embodiments, the sealing edge separating the suction opening and the groove has a thickness of 1mm - 6mm, particularly 2mm, 3mm, 4mm or 5mm. By choosing a narrow sealing edge, the groove separated from the suction opening by means of said sealing edge is in immediate proximity to the suction open¬ ing, i.e. the fiber movement caused by the grooves is maintained until the fibers reach the suction opening. Thereby, the dust removal is significantly enhanced. The invention also refers to a vacuum cleaner comprising a nozzle according to anyone of the preceding embodiments.
The term "essentially" or "approximately" as used in the inven¬ tion means deviations from the exact value by +/- 10%, prefera- bly by +/- 5% and/or deviations in the form of changes that are insignificant for the function.
BRIEF DESCRIPTION OF THE DRAWINGS The various aspects of the invention, including its particular features and advantages, will be readily understood from the following detailed description and the accompanying drawings, in which : Fig. 1 shows a perspective view on the lower side of a vacuum cleaner nozzle according to the invention; and
Fig. 2 shows a sectional view of the vacuum cleaner nozzle ac¬ cording to Fig. 1 along the narrow side of the vacuum cleaner nozzle.
Fig. 3 shows a vacuum cleaner according to an embodiment. DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
The present invention will now be described more fully with ref- erence to the accompanying drawings, in which example embodi¬ ments are shown. However, this invention should not be construed as limited to the embodiments set forth herein. Throughout the following description similar reference numerals have been used to denote similar elements, parts, items or features, when ap- plicable.
Fig. 1 and 2 illustrate an embodiment of a vacuum cleaner nozzle according to the present invention. The vacuum cleaner nozzle 1 comprises a nozzle body, which is connected to a nozzle outlet. The nozzle outlet is adapted for being connected to the suction hose of a vacuum cleaner (not shown) such that when the vacuum cleaner is in an operative mode, vacuum is created as air is sucked through the vacuum cleaner nozzle 1 via the hose to the vacuum cleaner. The operation of a typical vacuum cleaner is well known by the skilled man and will not be described in fur¬ ther detail here.
The vacuum cleaner nozzle 1 comprises a suction plate 2. The suction plate 2 is preferably a plastic part, which has been formed by means of, e.g. injection molding in one piece, a metal part, or a combination of plastic and metal. The suction plate 2, has an inlet side 2.1 and an outlet side 2.2, and there is an air duct 3 extending from the inlet side 2.1 to the outlet side 2.2. On the inlet side 2.1, the air duct 3 forms a suction open- ing 4. The suction opening 4 has, in this exemplifying embodiment, a substantially rectangular shape and has a first longitu¬ dinal side 4.1 and a second longitudinal side 4.2. The first longitudinal side 4.1 and the second longitudinal side 4.2 are separated a distance which is herein after referred to as the suction opening width w.
During normal operation of the vacuum cleaner nozzle 1, the suc- tion plate 2 is arranged such that the inlet side 2.1 is facing the surface being cleaned.
In usual operation of the vacuum cleaner nozzle 1, the longitu- dinal sides 4.1, 4.2 are perpendicular to the normal cleaning direction (CD), i.e. perpendicular to the movement of the vacuum cleaner nozzle 1 when it is being operated during vacuuming of a surface. Starting from the suction opening 4, the air duct 3 extends through the suction plate 2 to the outlet side 2.2.
The vacuum cleaner nozzle 1 further comprises a first sealing edge 5, 5' and a second sealing edge 5a, 5a' extending across the suction plate 2. Preferably, the first sealing edge 5, 5' and the second sealing edge 5a, 5a' extend perpendicular to the common cleaning direction CD and parallel to the first and se¬ cond longitudinal side 4.1, 4.2 of the suction opening 4.
In preferred embodiments, the first sealing edge 5, 5' is ar¬ ranged in immediate vicinity to the first longitudinal side 4.1 of the suction opening 4 in the forward cleaning direction CD
(away from the user) in front of the suction opening 4. Similarly, the second sealing edge 5a, 5a' is arranged in immediate vi¬ cinity to the second longitudinal side 4.2 of the suction open¬ ing 4 in the forward cleaning direction CD (away from the user) behind of the suction opening 4. The first and second sealing edges 5, 5' , 5a, 5a' are typically formed as integrated parts of the suction plate 2, however in an alternative embodiment the suction plate 2 is provided with sealing edges, which are sepa¬ rate parts being mounted along the suction opening 4.
According to the shown embodiment, the first and second sealing edge 5, 5' , 5a, 5a' are constituted by pairs of sealing edges 5, 5', 5a, 5a' separated in a horizontal direction, i.e. the seal¬ ing edges 5, 5a are located at a first half of the vacuum clean- er nozzle 1 with respect to a first median plane MP1 parallel to the forward cleaning direction CD and the sealing edges 5' , 5a' are located at a second half of the vacuum cleaner nozzle 1 with respect to said first median plane MP1. The pairs of sealing edges 5, 5' , 5a, 5a' are separated by first, respectively, se¬ cond lint picker portions 8, 9. Said lint picker portions 8, 9 are arranged in parallel with the first sealing edge 5, 5' and the second sealing edge 5a, 5a' . The lint picker portions 8, 9 are adapted to receive lint pickers. Said lint pickers typically comprise a strip of a material in which tufts of fine fibre are secured. The lint pickers attract dust from the surface being cleaned, and the dust is further sucked in through the suction opening 4. However, in an alternative embodiment without link picker portions, the first and second sealing edge may be formed by continuous sealing edges extending across substantially the full width of the suction plate 2. When the suction plate 2 is positioned on a carpet, the first sealing edge 5, 5' and the second sealing edge 5a, 5a' engages with the carpet. The purpose of the sealing edges 5, 5', 5a, 5a' is to restrict the air flow from areas surrounding the active suction area of the vacuum cleaner nozzle 1 on soft surfaces, the active suction area typically being the area covered by the suction opening 4. Furthermore, the sealing edges 5, 5', 5a, 5a' are active so as to agitate the fibers of a soft surface, e.g. carpet fibers, during the forward and backward movement of the vacuum cleaner nozzle 1 against the surface being cleaned.
In order to enhance the movement of the carpet fibers during cleaning operation, the vacuum cleaner nozzle 1 comprises at least one groove 6, 6', 7, 7' extending parallel to the longitu¬ dinal sides 4.1, 4.2 of the suction opening 4. Preferably, the groove 6, 6', 7, 1' is formed in the suction plate 2 by a recess in proximity to the suction opening 4. Said groove 6, 6', 7, 1' may have a groove base 11 disposed at a distance to the contact surface 10, at which the nozzle 1 stays in contact with the sur¬ face being cleaned. The groove may be integrally formed within the suction plate 2. In preferred embodiments, the least one groove 6, 6', 7, 1' and the suction opening 4 is separated by upper-mentioned sealing edge 5, 5' , 5a, 5a' . Preferably, the first and second sealing edges 5, 5' , 5a, 5a' form the borders of the suction opening 4 and the least one groove 6, 6', 7, 1' is located in immediate vicinity to one of said sealing edges 5, 5' , 5a, 5a' . When mov¬ ing the vacuum cleaner nozzle 1, the carpet fibers are gracing along the contact surface 10 of the vacuum cleaner nozzle 1. Thereby, the carpet fibers are turned down or distorted down- wardly. In the area of the groove 6, 6', 7, 7', the carpet fi¬ bers are able to at least partly revert back in their original position, i.e. the carpet fibers at least partially re-raise. Due to the further movement of the vacuum cleaner nozzle 1 said carpet fibers come into contact with the sealing edge 5, 5' , 5a, 5a' arranged behind said groove 6, 6', 7, 1' . Said sealing edge 5, 5' , 5a, 5a' forces the carpet fibers to turn down or distort¬ ed downwardly once again. Said deforming of the carpet fibers enhances the movement of the carpet fibers against each other. Said movement supports the peel-off of dust located within the carpet fibers .
In preferred embodiments, the sealing edge 5, 5' , 5a, 5a' sepa¬ rating the groove 6, 6', 7, 1' from the suction opening 4 has a width between 1mm and 6mm. Such a narrowly formed sealing edge 5, 5' , 5a, 5a' is advantageous, because the movement caused by the groove 6, 6', 7, 1' is remaining in the area of the suction opening 4, which leads to a further enhanced peel-off effect.
Preferably, at least one groove 6, 6' is arranged with respect to the forward cleaning direction CD in front of the suction opening 4 and a further groove 7, 1' is arranged behind the suc¬ tion opening 4. In other words, the arrangement of sealing edges 5, 5', 5a, 5a' and grooves 6, 6', 7, 1' is mirror inverted with respect to a second median plane MP2 perpendicular to the for- ward cleaning direction CD. Thereby, an enhanced movement of the carpet fibers is reached independent of a forward or backward cleaning direction. According to the shown embodiment, the grooves 6, 6', 7, 7' are formed as pairs of grooves separated in a horizontal direction, i.e. the grooves 6, 7 are located at a first half of the vacuum cleaner nozzle 1 with respect to the first median plane MPl and the grooves 6', 1' are located at a second half of the vacuum cleaner nozzle 1 with respect to said first median plane MPl. Preferably, the pairs of grooves are separated by the first, re¬ spectively, second lint picker portion 8, 9.
Figure 3 illustrate a vacuum cleaner 100 comprising a nozzle 101 according to an embodiment. The nozzle 101 may be connected to a main body 104 of the vacuum cleaner 100 via a tube 102 and a hose 103.
Above, embodiments of the vacuum cleaner nozzle according to the present invention as defined in the appended claims have been described. These should be seen as merely non-limiting examples. As understood by a skilled person, many modifications and alter¬ native embodiments are possible within the scope of the inven¬ tion.
List of reference numerals
1 nozzle
2 suction plate
2.1 inlet side
2.2 outlet side
3 air duct
4 suction opening
4.1 first longitudinal edge 4.2 second longitudinal edge
5, 5' first sealing edge
5a, 5a' second sealing edge
6, 6' groove
7, 7' groove
8 first lint picker portion
9 second lint picker portion
10 contact surface
11 groove base CD cleaning direction
MP1 first median plane
MP2 second median plane w width of suction opening

Claims

Claims
1. Vacuum cleaner nozzle (1) comprising a suction plate (2) having an inlet side (2.1) and an outlet side (2.2), said suc¬ tion plate (2) comprising
- an air duct (3) , wherein said air duct (3) extends
through the suction plate (2) from a suction opening (4) on the inlet side (2.1) to the outlet side (2.2), the suction opening (4) having a longitudinal shape ex¬ tending with its longitudinal sides transversely to a cleaning direction (CD) ;
- first and second sealing edges (5) for engaging with a surface being cleaned and for at least partly sealing said suction opening (4) against said surface being cleaned, wherein the first and second sealing edges (5) extend along at least a side portion of said suction opening (4) at opposite sides of the suction opening (4), characterised by,
at least one groove (6, 6', 7, 7') extending parallel to the longitudinal sides of the suction opening (4), the groove (6, 6', 7, 1') being formed in the suction plate (2) by a recess in proximity to the suction opening (4), wherein the least one groove (6, 6', 7, 1') and the suc¬ tion opening (4) is separated exclusively by the sealing edge (5) .
2. Nozzle according to claim 1, wherein the suction opening (4) the sealing edge (5) and the least one groove (6, 6', 7, 7') are arranged in immediate succession.
3. Nozzle according to claim 1 or 2, wherein the at least one groove (6, 6') is arranged with respect to a forward cleaning direction (CD) in front of the suction opening (4) .
4. Nozzle according to anyone of the preceding claims, wherein the at least one groove (7, 1') is arranged with respect to a forward cleaning direction (CD) behind the suction opening (4) .
Nozzle according to anyone of the preceding claims, compris¬ ing a pair of grooves (6, 6') with respect to a forward cleaning direction (CD) in front of the suction opening (4), wherein the grooves (6, 6') of the pair of grooves are ar¬ ranged at different sides laterally adjacent to a first lint picker portion (8) .
Nozzle according to anyone of the preceding claims, compris¬ ing a pair of grooves (7, 7') with respect to a forward cleaning direction (CD) behind the suction opening (4), wherein the grooves (7, 1') of the pair of grooves are ar¬ ranged at different sides laterally adjacent to a second lint picker portion (9) .
Nozzle according to anyone of the preceding claims, wherein the at least one groove (6, 6', 7, 7') is free of any ele¬ ments or installations.
Nozzle according to anyone of the preceding claims, wherein the sealing edge (5) separating the suction opening (4) and the groove (6, 6', 7, 1') has a thickness of 1mm - 6mm.
Vacuum cleaner comprising a nozzle (1) according to any one of the preceding claims 1-8.
EP13731101.5A 2013-06-19 2013-06-19 Nozzle for a vacuum cleaner and vacuum cleaner Active EP3010385B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2013/062745 WO2014202132A1 (en) 2013-06-19 2013-06-19 Nozzle for a vacuum cleaner and vacuum cleaner

Publications (2)

Publication Number Publication Date
EP3010385A1 true EP3010385A1 (en) 2016-04-27
EP3010385B1 EP3010385B1 (en) 2018-12-05

Family

ID=48692473

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13731101.5A Active EP3010385B1 (en) 2013-06-19 2013-06-19 Nozzle for a vacuum cleaner and vacuum cleaner

Country Status (3)

Country Link
EP (1) EP3010385B1 (en)
CN (1) CN105307551B (en)
WO (1) WO2014202132A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3313251B1 (en) * 2015-06-24 2019-10-02 AB Electrolux Vacuum cleaner nozzle and vacuum cleaner comprising a vacuum cleaner nozzle
DE102020203430A1 (en) * 2020-03-17 2021-09-23 BSH Hausgeräte GmbH FLOOR NOZZLE FOR A VACUUM CLEANER

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2806571A1 (en) * 1978-02-16 1979-08-30 Hans Wessel VACUUM CLEANER MOUTH PIECE WITH AT LEAST ONE THREAD PICK
DE3131380A1 (en) * 1981-08-07 1983-02-24 Düpro AG, 8590 Romanshorn Cleaning implement for suction cleaning
US20020066154A1 (en) * 2000-12-06 2002-06-06 Dieter Kaffenberger Vacuum cleaner nozzle
ITMI20041074A1 (en) * 2004-05-28 2004-08-28 New Ermes Europe Spa ASPIRATION HEAD FOR DUST VACUUM OR SIMILAR WITH SEPARABLE SUCTION DUCT
SE533482C2 (en) 2009-02-20 2010-10-05 Electrolux Ab Nozzle
CN202426453U (en) * 2011-12-04 2012-09-12 慕全文 Dust collector brush with ultraviolet sterilization lamp

Non-Patent Citations (1)

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Title
See references of WO2014202132A1 *

Also Published As

Publication number Publication date
WO2014202132A1 (en) 2014-12-24
CN105307551B (en) 2018-09-18
CN105307551A (en) 2016-02-03
EP3010385B1 (en) 2018-12-05

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