EP3420872B1 - Vacuum cleaner and floor nozzle for vacuum cleaner - Google Patents

Vacuum cleaner and floor nozzle for vacuum cleaner Download PDF

Info

Publication number
EP3420872B1
EP3420872B1 EP18175780.8A EP18175780A EP3420872B1 EP 3420872 B1 EP3420872 B1 EP 3420872B1 EP 18175780 A EP18175780 A EP 18175780A EP 3420872 B1 EP3420872 B1 EP 3420872B1
Authority
EP
European Patent Office
Prior art keywords
suction mouth
suction
floor nozzle
dust collection
floor
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
EP18175780.8A
Other languages
German (de)
French (fr)
Other versions
EP3420872A1 (en
Inventor
Markus Penner
Benjamin Rodax
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.)
Miele und Cie KG
Original Assignee
Miele und Cie KG
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 Miele und Cie KG filed Critical Miele und Cie KG
Publication of EP3420872A1 publication Critical patent/EP3420872A1/en
Application granted granted Critical
Publication of EP3420872B1 publication Critical patent/EP3420872B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/22—Floor-sweeping machines, hand-driven
    • 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
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/24—Floor-sweeping machines, motor-driven

Definitions

  • the invention relates to a floor nozzle for a vacuum cleaner for cleaning and caring for floor surfaces, with a housing which has an underside facing the floor surface in the processing position, on which an elongated suction mouth extending transversely to the processing direction is arranged, the suction mouth being provided by at least one associated suction mouth edge is limited, the suction mouth forming an opening to a suction mouth space arranged above the suction mouth in the processing position, the suction mouth space being connected to a suction channel.
  • the invention also relates to a vacuum cleaner with such a floor nozzle.
  • vacuum cleaners are used to clean surfaces such as textile floor coverings and smooth floors.
  • a floor nozzle of the vacuum cleaner is continuously pushed back and forth on a floor surface.
  • the effectiveness of the vacuum cleaner's dust collection depends heavily on the design of the floor nozzle.
  • the design of the floor nozzle is playing an increasingly important role.
  • the dimensioning of vacuum cleaner fans follows a trend towards less power, which initially leads to lower volume flows available at the floor nozzle, so that due to the continuity relationship at the floor nozzle, lower flow velocities generally result.
  • the floor nozzles are adapted to the lower volume flows, in particular with additional lips on the suction mouths.
  • a floor nozzle for a floor care device is known, with a suction mouth edge formed as a swiveling lip behind the suction mouth of the nozzle spreading the carpet pile when being painted over, in order to be able to clean the carpet effectively in depth even with lower volume flows.
  • a floor nozzle with so-called suction mouth edges designed as swiveling lips is known.
  • a floor nozzle for a vacuum cleaner which has a housing which has an underside facing the floor surface in the processing position, on which a suction mouth is arranged that runs essentially transversely to the processing direction, the suction mouth being delimited by at least one associated suction mouth edge, the suction mouth forms an opening to a suction mouth space arranged above the suction mouth in the processing position, the suction mouth space with a Suction channel is connected, wherein a dust collection zone is arranged in the suction mouth space in the processing direction behind the suction mouth.
  • the ejected dirt particles only partially get into the suction air flow that is being transported away, a not inconsiderable proportion of the loosened dirt particles are not transported away from the suction mouth, but inevitably land again on the floor surface to be cleaned after bouncing off the suction mouth wall and are worked back into the carpet fiber. Since this brings already dissolved dust into contact with the floor surface again and gets caught here, effective dust absorption is not guaranteed.
  • the dust that has already been released is released again by the suction mouth edge and taken up by the floor nozzle.
  • the invention thus has the problem of specifying an improved floor nozzle and an improved vacuum cleaner.
  • a floor nozzle having the features of claim 1 and a vacuum cleaner according to claim 12. Because a dust collection zone is arranged in the suction mouth space in the processing direction in front of the suction mouth and in the processing direction behind the suction mouth, the floor nozzle can very effectively pick up loosened dirt particles and thus ensure effective dust pick-up, especially on carpets. As a result, effective cleaning of the floor surface with sufficiently high flow velocities can be achieved even with low volume flows. With such a floor nozzle, the Dust absorption effectiveness - especially on carpets - can therefore be advantageously increased, so that good performance classes or dust absorption values can be achieved even with low absorption capacities.
  • the effectiveness of the dust absorption can be increased in this way without there being a significant increase in the pushing forces.
  • the required volume flow for effective cleaning can be further reduced, so that more economical fans can be installed in the vacuum cleaner.
  • the reduction in volume flows also leads to lower flow losses, especially in the case of bagless separators, so that further energy can be saved here.
  • the arrangement of a dust collection zone in the processing direction in front of or behind the suction mouth prevents re-soiling of the floor surface to be cleaned by dirt particles rebounding from the suction chamber wall. This makes it possible to increase the efficiency of the removal of dirt particles that have already been released, since after they have been loosened and before they are transported away by the suction air stream, they initially collect in the dust collection zone.
  • a particularly effective dust pick-up is achieved if a dust collection zone is located both in the processing direction in front of the suction mouth and in the processing direction behind the suction mouth. This ensures that dirt particles loosened by the suction mouth edges are effectively collected both in a forward movement of the floor nozzle in the processing direction and in a backward movement of the floor nozzle in the processing direction and transported away from the floor nozzle via the suction air flow generated by the vacuum cleaner fan.
  • the floor area can be a textile floor covering such as a carpet or carpeting or a hard floor such.
  • a wooden parquet, laminate or PVC flooring can be formed.
  • the vacuum cleaner can have a fan for generating a negative pressure by means of which the floor nozzle, which is guided over a floor surface to be cleaned, picks up dust and dirt from the floor surface.
  • the floor nozzle is moved back and forth in the processing direction by the user by means of pushing and pulling movements. This causes the floor nozzle to slide over the floor surface to be cleaned.
  • the underside of the floor nozzle slides over the carpet, while the underside of hard floors is spaced apart, possibly by spacer bristles, floating over these floor surfaces.
  • the user can, for example, handle a handle of the vacuum cleaner connected to the suction tube.
  • the suction mouth is elongated and runs essentially transversely to the processing direction.
  • elongated means that the preferably essentially rectangular suction mouth has a greater length transversely to the machining direction than the width in the machining direction.
  • the suction mouth is preferably between 20 and 30 cm across long in the machine direction and preferably between one and 3 cm wide in the machine direction.
  • the floor nozzle can also be arranged on an independently driving vacuum cleaner, in particular a robot vacuum cleaner, so that the processing direction of the floor nozzle corresponds to the direction of travel of the independently driving vacuum cleaner.
  • a vacuum cleaner housing of the vacuum cleaner can have a dust receiving chamber in which the dust received via the floor nozzle can be collected in a dust bag, for example.
  • the dust collection zone extends along the suction mouth.
  • a dust collection zone extending along the vacuum cleaner mouth offers an effective possibility of collecting the dirt particles loosened from the suction mouth edge delimiting the suction mouth. If the dust collection zone extends essentially over the entire length of the suction mouth, a particularly high level of dust pick-up by the floor nozzle is guaranteed.
  • An advantageous embodiment is that the dust collection zone is separated from the suction mouth by a partition in the suction mouth space.
  • the separation of the dust collection zone by a partition in the suction mouth ensures that dirt particles that have been loosened and collected in the dust collection zone cannot escape from the floor nozzle again via the suction mouth. This prevents renewed soiling of the already cleaned floor area from the loosened and collected dirt particles.
  • the partition has a through-flow opening, the through-flow opening connecting the suction mouth with the suction channel in terms of flow.
  • the throughflow opening arranged in the partition wall ensures that dirt particles loosened from the floor surface get through the suction mouth into the dust collection zone and via the suction air flow into the suction channel in order to be effectively transported away from the floor nozzle.
  • a collecting channel forming the dust collecting zone is arranged below the throughflow opening.
  • the collecting channel is preferably designed as an extension of the partition wall arranged in the suction mouth.
  • the configuration is further advantageous in that the collecting channel simultaneously forms the edge of the suction mouth.
  • the collecting channel delimits the dust collection zone on the front side and forms the suction mouth edge on the rear side, the dust collection zone can be arranged particularly close to the suction mouth delimited by the suction mouth edge. This enables a particularly high amount of dust to be picked up by the floor nozzle and reliable dust collection in the dust collection zone.
  • An advantageous embodiment of the invention provides that the dust collection zone is arranged between the suction mouth and the suction channel.
  • the arrangement of the dust collection zone between the suction mouth and the suction channel ensures that dirt particles collected in the dust collection zone are reliably transported away from the dust collection zone via the suction air flow through the suction channel and out of the floor nozzle.
  • the dust collection zone is assigned at least one secondary air opening which is arranged so that a partial air flow independent of the suction mouth can be generated from the secondary air opening through the dust collection zone to the suction channel.
  • the arrangement of a secondary air opening in the area of the dust collection zone ensures that dirt particles collected in the dust collection zone via the partial air flow can be transported away through the suction mouth independently of the main air flow. Because the partial air flow through the secondary air opening is independent of the main air flow through the suction mouth, a removal of collected dirt particles from the dust collection zone can be guaranteed even if the suction mouth is blocked or covered.
  • the removal of collected dirt particles from the dust collection zone is particularly effective when the main air flow is reduced by a clogged or covered suction mouth and the suction air flow on the suction channel is diverted to a greater extent via the secondary air opening in this case.
  • a preferred embodiment provides that the at least one secondary air opening is arranged laterally in the housing transversely to the machining direction.
  • the lateral arrangement of the secondary air opening ensures that the partial air flow is reliably guided through the dust collection zone even with long-pile carpets. Due to the lateral arrangement of the secondary air opening near the floor surface, additional edge suction can be achieved through the secondary air opening. This allows Effective cleaning of areas near carpet edges and skirting boards through the auxiliary air opening on the side of the floor nozzle.
  • the suction mouth space has an impact contour that promotes dust collection in the dust collection zone.
  • Such an impact contour ensures that loosened dirt particles reliably get into the dust collection zone and are collected there.
  • the impact contour is designed in such a way that dirt particles released from the bottom surface by the suction mouth edge bounce off the impact contour in the direction of the dust-collecting zone.
  • the loosened dirt particles usually hit the impact contour in a certain angular range, with the dirt particles accelerated by the ejection from carpet fibers usually bouncing off the impact contour at approximately the same angle as they do hit the impact contour at the angle of incidence.
  • an impact contour that promotes dust collection in the dust collection zone can be very easily formed in the suction mouth space. In this way, the impact processes of the loosened dirt particles on the impact contour can be used to ensure reliable removal of dirt from the floor nozzle and to ensure that once loosened dirt particles are not returned to the floor surface.
  • the invention also relates to a vacuum cleaner for cleaning and caring for floor surfaces with a fan for generating a negative pressure to pick up dirt by means of an air stream and a separation system for cleaning the air picked up from dirt, the vacuum cleaner already described in more detail below having a floor nozzle according to of the previous and following description.
  • a floor nozzle according to the invention is shown purely schematically.
  • the representation according to Figure 1 shows a vacuum cleaner 2 according to the invention with a floor nozzle 1 connected to the vacuum cleaner 2.
  • the vacuum cleaner 1 shown in the exemplary embodiment is a so-called canister vacuum cleaner.
  • the floor nozzle 1 is connected here via its connecting piece 19 to a suction pipe 26, which is preferably designed to be telescopic.
  • the floor nozzle 1 has its own housing 3 that is independent of the vacuum cleaner housing 21, 21a.
  • the telescopic suction tube 26 merges into a handle 27 to which a suction hose 16 is connected, which is connected to the vacuum cleaner housing 21, 21a.
  • dirt and grime are removed from the floor surface 30 to be cleaned ( Fig. 2 , 3 , 6th , 8th u. 9) by an air stream over the suction mouth 6 ( Fig. 4 ) of the floor nozzle 1 and transported away via the suction pipe 26 and the suction hose 16 into the housing 21, 21a of the vacuum cleaner 2.
  • a separation system 24 which, in the exemplary embodiment, is designed as a dust bag. This separation system 24 is located in a dust space 25 formed by the housing parts 21 and 21a of the vacuum cleaner 2.
  • This dust space 25 is accessible and opened by a folding mechanism between the vacuum cleaner housing parts 21 and 21a, so that the separation system 24 is visible and can be removed.
  • the dust chamber 25 is closed and a negative pressure is generated.
  • the air flow generated by the negative pressure is freed of dirt and grime in the separation system 24 and is guided out of the vacuum cleaner 2 via an exhaust air grille 23.
  • This step circuit 18 includes switches that are sufficiently large that a user can operate them with his foot.
  • the step switch 18 usually also has a switch for actuating the automatic winding system (not shown) for the connecting cable 22 that is integrated in the vacuum cleaner housing 21, 21a.
  • On the handle 27 there is also a manual switch 17 with which the functions of the vacuum cleaner 2 can be activated.
  • the vacuum cleaner 2 can be switched on and off via the manual control 17 and the power levels of the fan (not shown) can be selected.
  • a user of the vacuum cleaner 1 can take hold of it by the handle 27 and thus push the floor nozzle 1 back and forth by means of a pushing and pulling movement in the machining direction 5 marked as a double arrow in order to move the floor surface 30 ( Fig. 2 , 3 , 6th , 8th u. 9) to clean.
  • the floor nozzle 1 slides over the floor surface 30 to be cleaned ( Fig. 2 , 3 , 6th , 8th u. 9).
  • the underside 4 slides ( Fig. 4 ) of the floor nozzle 1 over the floor surface 30 ( Fig. 2 , 3 , 6th , 8th u. 9), while the bottom 4 ( Fig.
  • the floor nozzle 1 also has support elements 20 in the form of wheels, which are a defined distance from the bottom 4 ( Fig. 4 ) to the floor surfaces to be cleaned 30 ( Fig. 2 , 3 , 6th , 8th u. 9) and ensure easy handling when pushing the floor nozzle 1 back and forth.
  • the Figure 2 shows a floor nozzle 1 in a front view, ie from the perspective of the processing direction 5.
  • the underside 4 which is designed as a sliding sole, rests on the carpet fibers 32 of the floor surface 30.
  • the housing 3 of the floor nozzle 1 has a connection piece 19 via which a vacuum cleaner 2 ( Fig. 1 ) can be connected to the floor nozzle 1.
  • the suction air flow 33 generated by the vacuum cleaner fan of the vacuum cleaner 1 is then passed through the suction channel 9 formed in the connection piece 19, whereby dirt particles 31 ( Fig. 3 ) can be removed from the floor nozzle 1.
  • Figure 2 shows a sectional plane AA in the machining direction 5 through the floor nozzle 1, which is used for more detailed explanation below.
  • FIG 3 is a sectional view of a floor nozzle 1 shown as it is known from the prior art.
  • the floor nozzle 1 is moving forward in the machining direction 5, ie the floor nozzle 1 is moved by the user from right to left in the illustration shown.
  • the front suction mouth edge 7 of the suction mouth 6 located in the sliding sole 4 spreads the carpet fibers 32 on the floor surface 30 to be cleaned when the carpet pile is passed over, so that adhering dirt particles 31 are ejected from the carpet fibers 32.
  • the trajectory of the dirt particles 31 resulting from the ejection of the dirt particles 31 is indicated by dashed lines.
  • the trajectory of the dirt particles 31 drawn as an example shows that they bounce off the upper wall of the suction mouth space 8 and fall back onto the floor surface 30 to be cleaned in front of the rear suction mouth edge 7a, so that they are worked into the carpet fibers 32 again from the rear suction mouth edge 7a become.
  • effective dust absorption and reliable cleaning of the floor surface 30 are not possible.
  • FIG 4 is a floor nozzle 1 according to the invention for a vacuum cleaner 2 ( Fig. 1 ) shown in a perspective side view.
  • the underside 4 of the floor nozzle 1 has an elongated suction mouth 6 running transversely to the machining direction 5.
  • the suction mouth 6 represents an opening of the housing 3 in the suction mouth space 8 formed by the housing 3.
  • the suction mouth 6 is connected to a suction channel 9 ( Fig. 5 ) through which the fan of the vacuum cleaner 2 ( Fig. 1 ) generated air flow is conducted.
  • the floor nozzle 2 is connected to the suction pipe 26 ( Fig. 1 ) connected.
  • a partition wall 11a which separates part of the suction mouth space 8.
  • a throughflow opening 12a through which the suction mouth 6 is fluidically connected to the suction channel 9 ( Fig. 5 ) connected is.
  • the suction mouth wall has a specially shaped impact contour 15.
  • a laterally arranged secondary air opening 14 can be seen in the housing 3 of the floor nozzle 1, which provides a partial air flow 34 ( Fig. 8 ) to suction channel 9 ( Fig. 5 ) generated.
  • the Figure 5 shows schematically a floor nozzle 1 according to the invention according to Figure 4 for a vacuum cleaner 2 ( Fig. 1 ) for cleaning and maintaining floor surfaces 30 ( Fig. 4 ) from a perspective side view in sectional view.
  • the suction mouth space 8 in the housing 3 of the floor nozzle 1 is shown cut open by the sectional view.
  • a partition 11a which separates the suction mouth 6 from a dust collecting zone 10a in the suction mouth space 8.
  • the dust collection zone 10a is formed by a collecting channel 13a which is located below the throughflow opening 12a.
  • the throughflow opening 12a forms, as from Figure 5 can be seen, a connection of the suction mouth 6 to the suction channel 9.
  • the dust collection zone 10a formed below the flow opening 12a extends, as shown in FIG Figure 5 easy to see, transversely to the processing direction 5 along the elongated suction mouth 6.
  • the dust collecting zone 10a is arranged in the processing direction 5 behind the suction mouth 6, so that when the floor nozzle 1 moves forward in the processing direction 5, dirt particles 31 ( Fig. 6 ) collect in the dust collection zone 10a behind the rear suction mouth edge 7a.
  • the dirt particles 31 collected here ( Fig. 6 ) are transported away from the dust collection zone 10a via the suction channel 9 formed by the connection piece 19.
  • the described forward movement of the floor nozzle in the machining direction 5 is shown in the sectional illustration according to FIG Figure 6 explained in more detail.
  • the Figure 6 shows schematically a floor nozzle 1 according to the invention according to Figure 4 for a vacuum cleaner 2 ( Fig. 1 ) for cleaning and maintaining floor surfaces 30 ( Fig. 4 ) from a Side view in section according to the in Figure 2 drawn section plane AA.
  • the sectional view shows that the floor nozzle 1 with the sliding sole of the underside 4 strokes from right to left over the carpet fibers 32 in a forward movement in the processing direction 5.
  • the carpet fibers 32 are bent up from the front suction mouth edge 7 of the suction mouth 6 and adhering dirt particles 31 are thrown out of the carpet fibers 32 according to the trajectories shown in dashed lines.
  • the suction mouth space 8 has an impact contour 15 which promotes the dust collection in the dust collection zone 10a.
  • the ejected dirt particles 31 bounce off the impact contour 15 and are simply conveyed through the through-flow opening 12a in the direction of the dust-collecting zone 10a.
  • the dirt particles 31 released from the bottom surface 30 collect as a result of the forward movement of the suction mouth edge 7 and the rebound on the impact contour 15 in the dust collecting zone 10a behind the suction mouth 6.
  • the impact contour 15 is designed in such a way that the loosened dirt particles 31 usually impinge on the impact contour 15 in a certain angular range, the dirt particles 31 accelerated by the ejection from the carpet fibers 32 generally bouncing off the impact contour 15 at approximately the same angle as they strike the impact contour 15 at the angle of incidence.
  • the dust collection zone 10a is arranged between the suction mouth 6 and the suction channel 9, so that dirt particles 31 collected in the dust collection zone 10a can easily be transported away by the suction air flow 33 prevailing in the suction channel 9.
  • the dust collection zone 10a extending along the suction mouth 6 is separated from the suction mouth 6 by a partition 11a.
  • a connection to the suction mouth 6 is given via the throughflow opening 12a in the partition 11a.
  • the collecting channel 13a by which the dust collecting zone 10a is delimited and formed, can be seen below the throughflow opening 12a.
  • the collecting channel 13a at the same time forms the rear edge 7a of the suction mouth.
  • a section plane BB is drawn, which will be discussed below.
  • the Figure 7 shows a further side view of the floor nozzle 1 in a sectional illustration.
  • a secondary air opening 14a is assigned to the dust-collecting zone 10a arranged behind the suction mouth 6.
  • a partial air flow 34 that is independent of the suction mouth ( Fig. 8 ) can be generated through the dust collection zone 10a towards the suction channel 9.
  • dirt particles 31 collected in the dust collection zone 10a can be very easily transported away via the suction air flow 33 prevailing in the suction channel 9. Since the partial air flow 34 ( Fig.
  • the removal of the collected dirt particles 31 from the dust collection zone 10a thus takes place regularly, since the suction mouth 6 is often covered or clogged, especially when it is placed on long-pile carpets, so that the suction air flow 33 of the suction channel 9 divided between suction mouth 6 and secondary air opening 14a regularly becomes one higher proportion is diverted via the secondary air opening 14a.
  • the arrangement of the secondary air opening 14a transversely to the machining direction 5 laterally in the housing 3 ensures that the partial air flow 34 ( Fig. 8 ) is reliably guided from the secondary air opening 14a through the dust collection zone 10a even with long-pile carpets.
  • the lateral arrangement of the secondary air opening 14a in the vicinity of the floor surface 30 also enables additional edge suction through the secondary air opening 14a. As a result, carpet edges and floor surface area on skirting boards can be effectively cleaned through the lateral auxiliary air opening 14a on floor nozzle 1.
  • FIG Figure 8 discloses a sectional view through the floor nozzle 1 according to the invention according to the FIG Figure 6 drawn section plane BB.
  • the dust collection zone 10a which extends along the elongated suction mouth 6, is assigned two lateral secondary air openings 14, 14a, via which two partial air flows 34 are guided through the dust collection zone 10a to the suction channel 9.
  • the two partial air flows 34 are independent of the main air flow through the suction mouth 6 and mainly serve to reliably transport away the dirt particles 31 collected in the dust collection zone 10a.
  • the arrangement of two lateral secondary air openings 34 allows the dust collection zone 10a, which extends along the suction mouth 6, to pass reliably through the partial air flows 34 are freed from collected dirt particles 31.
  • Out Figure 9 shows an embodiment according to the invention in which two dust collecting zones 10, 10a are provided.
  • One of the dust collecting zones 10 is arranged in front of the suction mouth 6 in the machining direction 5 and a dust collecting zone 10a is arranged behind the suction mouth 6 in the machining direction 5.
  • the dust collecting zones 10, 10a each extend along the associated suction mouth edge 7, 7a of the suction mouth. They are each formed by a collecting channel 13, 13a.
  • the dust collection zones 10, 10a can each have two secondary air openings 14, 14a ( Fig. 8 ) must be assigned.
  • Each of the two dust collecting zones 10, 10a is separated from the suction mouth 6 by a partition 11, 11a in the suction mouth space 8.
  • the floor nozzle 1 shown schematically is in a forward movement in the processing direction 5, ie it is moved from right to left by the user, so that the sliding sole 4 slides over the carpet fibers 32 of the floor surface 30.
  • the carpet fibers are bent up from the front suction mouth edge 7 of the suction mouth 6 and adhering dirt particles 31 are thrown out of the carpet fibers 32.
  • the thrown out dirt particles 31 thereby fly according to the trajectories shown in dash-dotted lines against the impact contour 15 arranged in the suction mouth space 8.
  • the design of the impact contour 15 favors the dust collection in the rear dust collection zone 10a when the floor nozzle 1 moves forward
  • Detached dirt particles 31 bounce off the baffle contour 15 in the direction of the rear dust-collecting zone 10a, since the bounce angle essentially corresponds to the bounce angle.
  • the dirt particles that have bounced off are collected in the rear dust collection zone 10a before they are transported away via the suction air flow 33 in the suction channel 9.
  • the Figure 10 shows the floor nozzle 1 according to Figure 9 in a backward movement in the processing direction 5.
  • the movement initiated by the user causes the rear suction mouth edge 7a to bend up the carpet fibers 32 swept over by the sliding sole 4 and to hurl adhering dirt particles 31 out of the carpet fibers 32.
  • the thrown out dirt particles 31 bounce off the impact contour 15 of the suction mouth space 8 according to the trajectory shown in dashed lines and land in the dust collection zone 10, which extends along the front suction mouth edge 7 of the suction mouth 6. From here, the collected dirt particles 31 are transported away to the suction channel 9 via the partial suction channel 9b.
  • the design of the floor nozzle 1 with two dust collection zones 10, 10a, with a dust collection zone 10 in the processing direction 5 in front of the suction mouth 6 and a dust collection zone 10a in the processing direction 5 behind the suction mouth 6, has the advantage that loosened Dirt particles 31 are collected in the dust collecting zones 10, 10a both in a forward movement of the floor nozzle 1 in the machining direction 5 and in a backward movement of the floor nozzle 1 in the machining direction 5. This enables particularly effective and thorough cleaning of the floor surface 30.
  • the invention is not restricted to the exemplary embodiments shown. Further refinements are possible without departing from the basic idea. So the floor nozzle 1 can also be designed as part of a self-propelled vacuum cleaner.

Description

Die Erfindung betrifft eine Bodendüse für einen Staubsauger zur Reinigung und Pflege von Bodenflächen, mit einem Gehäuse, das eine in Bearbeitungsstellung der Bodenfläche zugewandte Unterseite aufweist, an der ein länglicher, quer zur Bearbeitungsrichtung verlaufender Saugmund angeordnet ist, wobei der Saugmund durch mindestens eine zugeordnete Saugmundkante begrenzt ist, wobei der Saugmund eine Öffnung zu einem in Bearbeitungsstellung über dem Saugmund angeordneten Saugmundraum bildet, wobei der Saugmundraum mit einem Saugkanal verbunden ist. Außerdem betrifft die Erfindung einen Staubsauger mit einer solchen Bodendüse.The invention relates to a floor nozzle for a vacuum cleaner for cleaning and caring for floor surfaces, with a housing which has an underside facing the floor surface in the processing position, on which an elongated suction mouth extending transversely to the processing direction is arranged, the suction mouth being provided by at least one associated suction mouth edge is limited, the suction mouth forming an opening to a suction mouth space arranged above the suction mouth in the processing position, the suction mouth space being connected to a suction channel. The invention also relates to a vacuum cleaner with such a floor nozzle.

Im privaten Haushalt sowie im Gewerbe kommen Staubsauger zur Reinigung von Flächen wie textilen Bodenbelägen und glatten Böden zum Einsatz. Dabei wird zur Staubaufnahme eine Bodendüse des Staubsaugers auf einer Bodenfläche kontinuierlich vor- und zurückgeschoben. Die Staubaufnahmeeffektivität des Staubsaugers hängt dabei stark von der Gestaltung der Bodendüse ab. Im Rahmen der Reduzierung von Energieverbräuchen bei Staubsaugern spielt die Ausgestaltung der Bodendüse eine zunehmend wichtigere Rolle. Die Dimensionierung von Staubsaugergebläsen folgt einem Trend hin zu weniger Leistung, was erstmal zu geringeren, an der Bodendüse zur Verfügung stehenden, Volumenströmen führt, sodass sich aufgrund der Kontinuitätsbeziehung an den Bodendüsen in der Regel geringere Strömungsgeschwindigkeiten ergeben. Um dennoch ausreichend Staub aufzunehmen, werden die Bodendüsen insbesondere durch zusätzliche Lippen an den Saugmündern auf die geringeren Volumenströme angepasst.In private households and in business, vacuum cleaners are used to clean surfaces such as textile floor coverings and smooth floors. To collect dust, a floor nozzle of the vacuum cleaner is continuously pushed back and forth on a floor surface. The effectiveness of the vacuum cleaner's dust collection depends heavily on the design of the floor nozzle. In the context of reducing energy consumption in vacuum cleaners, the design of the floor nozzle is playing an increasingly important role. The dimensioning of vacuum cleaner fans follows a trend towards less power, which initially leads to lower volume flows available at the floor nozzle, so that due to the continuity relationship at the floor nozzle, lower flow velocities generally result. In order to still absorb sufficient dust, the floor nozzles are adapted to the lower volume flows, in particular with additional lips on the suction mouths.

Aus der DE 38 01 757 A1 ist eine Bodendüse für ein Bodenpflegegerät bekannt, wobei hier eine als schwenkbare Lippe ausgebildete Saugmundkante hinter dem Saugmund der Düse den Teppichflor beim Überstreichen aufspreizt, um den Teppich auch mit geringeren Volumenströmen tiefenwirksam reinigen zu können. Auch aus der EP 2 939 582 A1 ist eine Bodendüse mit als schwenkbare Lippen ausgebildeten sogenannten Saugmundkanten bekannt.From the DE 38 01 757 A1 A floor nozzle for a floor care device is known, with a suction mouth edge formed as a swiveling lip behind the suction mouth of the nozzle spreading the carpet pile when being painted over, in order to be able to clean the carpet effectively in depth even with lower volume flows. Also from the EP 2 939 582 A1 a floor nozzle with so-called suction mouth edges designed as swiveling lips is known.

Aus der JP-U-H047038 ist eine Bodendüse für einen Staubsauger bekannt, welche ein Gehäuse aufweist, das eine in Bearbeitungsstellung der Bodenfläche zugewandte Unterseite aufweist, an der ein im Wesentlichen quer zur Bearbeitungsrichtung verlaufender Saugmund angeordnet ist, wobei der Saugmund durch mindestens eine zugeordnete Saugmundkante begrenzt ist, wobei der Saugmund eine Öffnung zu einem in Bearbeitungsstellung über dem Saugmund angeordneten Saugmundraum bildet, wobei der Saugmundraum mit einem Saugkanal verbunden ist, wobei in dem Saugmundraum in Bearbeitungsrichtung hinter dem Saugmund eine Staubsammelzone angeordnet ist.From the JP-U-H047038 A floor nozzle for a vacuum cleaner is known, which has a housing which has an underside facing the floor surface in the processing position, on which a suction mouth is arranged that runs essentially transversely to the processing direction, the suction mouth being delimited by at least one associated suction mouth edge, the suction mouth forms an opening to a suction mouth space arranged above the suction mouth in the processing position, the suction mouth space with a Suction channel is connected, wherein a dust collection zone is arranged in the suction mouth space in the processing direction behind the suction mouth.

Nachteilig an den hier beschriebenen Lösungen ist, dass der Schiebewiderstand durch die Lippen erhöht wird. Je scharfkantiger die Lippen und Saugmundkanten ausgebildet werden, desto effektiver biegen sie den Teppichflor auf. Hierdurch wird allerdings der Schiebewiderstand auf der Bodenfläche derart erhöht, dass dies, insbesondere auf langflorigen Teppichen, zu einer unangenehmen und anstrengenden Handhabung des Staubsaugers und der Bodendüse für den Benutzer führt.The disadvantage of the solutions described here is that the sliding resistance is increased by the lips. The more sharp-edged the lips and suction mouth edges are, the more effectively they bend the carpet pile. However, this increases the sliding resistance on the floor surface to such an extent that this leads to unpleasant and strenuous handling of the vacuum cleaner and the floor nozzle for the user, in particular on long-pile carpets.

Nachteilig an den hier beschriebenen Lösungen ist zudem, dass die von den Saugmundkanten gelösten Schmutzpartikel nur teilweise und damit ineffizient abgesaugt werden. Die durch die Saugmundkanten gelösten Schmutzpartikel werden gegen die Bewegungsrichtung der Saugmundkante gelöst und durch Absaugung nur teilweise aus dem Saugmundraum abtransportiert. Insbesondere bei der Bearbeitung von langflorigen Teppichen durch die Saugmundkanten werden Schmutzpartikel entgegen der Bewegungsrichtung der Saugmundkante durch zurückschnellende Teppichfasern ausgeworfen. Die ausgeworfenen Schmutzpartikel gelangen jedoch nur teilweise in den abtransportierenden Saugluftstrom, ein nicht unerheblicher Anteil der gelösten Schmutzpartikel wird nicht aus dem Saugmundraum abtransportiert, sondern landet zwangsläufig nach einem Abprallen an der Saugmundraumwand abermals auf der zu reinigenden Bodenfläche und wird wieder in die Teppichfaser eingearbeitet. Da hierdurch bereits gelöster Staub erneut mit der Bodenfläche in Kontakt gebracht wird und sich hier verfängt, ist eine effektive Staubaufnahme nicht gewährleistet. Bestenfalls wird der bereits gelöste Staub bei erneuter Bearbeitung der Bodenfläche durch die Saugmundkante erneut gelöst und von der Bodendüse aufgenommen. Allerdings sind hierdurch mehrfache Ablösungen der Schmutzpartikel aus den Teppichfasern nötig, so dass die Staubaufnahme nicht effektiv ist und so eine optimale Reinigung des Untergrundes nicht gewährleistet ist. Der Erfindung stellt sich somit das Problem, eine verbesserte Bodendüse und einen verbesserten Staubsauger anzugeben.Another disadvantage of the solutions described here is that the dirt particles loosened from the suction mouth edges are only partially and thus inefficiently sucked off. The dirt particles loosened by the suction mouth edges are loosened against the direction of movement of the suction mouth edge and only partially removed from the suction mouth space by suction. Particularly when long-pile carpets are processed by the suction mouth edges, dirt particles are thrown out by the carpet fibers that snap back against the direction of movement of the suction mouth edge. However, the ejected dirt particles only partially get into the suction air flow that is being transported away, a not inconsiderable proportion of the loosened dirt particles are not transported away from the suction mouth, but inevitably land again on the floor surface to be cleaned after bouncing off the suction mouth wall and are worked back into the carpet fiber. Since this brings already dissolved dust into contact with the floor surface again and gets caught here, effective dust absorption is not guaranteed. At best, when the floor surface is processed again, the dust that has already been released is released again by the suction mouth edge and taken up by the floor nozzle. However, this means that multiple detachments of the dirt particles from the carpet fibers are necessary, so that dust absorption is not effective and optimal cleaning of the surface is not guaranteed. The invention thus has the problem of specifying an improved floor nozzle and an improved vacuum cleaner.

Erfindungsgemäß wird dieses Problem durch eine Bodendüse mit den Merkmalen des Patentanspruchs 1 und einen Staubsauger gemäß Anspruch 12 gelöst. Dadurch, dass in dem Saugmundraum in Bearbeitungsrichtung vor dem Saugmund und in Bearbeitungsrichtung hinter dem Saugmund eine Staubsammelzone angeordnet ist, kann die Bodendüse sehr effektiv gelöste Schmutzpartikel aufnehmen und so eine effektive Staubaufnahme, insbesondere auf Teppichen, gewährleisten. Hierdurch kann auch mit geringen Volumenströmen eine effektive Reinigung der Bodenfläche mit ausreichend hohen Strömungsgeschwindigkeiten erreicht werden. Mit einer solchen Bodendüse kann die Staubaufnahmeeffektivität - insbesondere auf Teppichböden - also vorteilhaft erhöht werden, sodass auch bei niedrigen Aufnahmeleistungen gute Performanceklassen bzw. Staubaufnahmewerte erreicht werden können. Die Staubaufnahmeeffektivität lässt sich hierdurch steigern, ohne dass es zu einer erheblichen Erhöhung der Schiebekräfte kommt. Außerdem kann der erforderliche Volumenstrom für eine effektive Reinigung weiter gesenkt werden, so dass sparsamere Gebläse im Staubsauger verbaut werden können. Die Verringerung der Volumenströme führt außerdem zu geringeren Strömungsverlusten, insbesondere bei beutellosen Abscheidern, sodass hier weiter Energie eingespart werden kann. Die Anordnung einer Staubsammelzone in Bearbeitungsrichtung vor oder hinter dem Saugmund verhindert eine Wiederanschmutzung der zu reinigenden Bodenfläche durch von der Saugraumwand zurückprallende Schmutzpartikel. Hierdurch ist eine Effizienzsteigerung im Abtransport bereits gelöster Schmutzpartikel erreichbar, da sich diese nach dem Lösen vor dem Abtransport durch den Saugluftstrom zunächst in der Staubsammelzone sammeln. Eine besonders effektive Staubaufnahme wird erreicht, wenn sich sowohl in Bearbeitungsrichtung vor dem Saugmund als auch in Bearbeitungsrichtung hinter dem Saugmund jeweils eine Staubsammelzone befindet. Hierdurch ist gewährleistet, dass durch die Saugmundkanten gelöste Schmutzpartikel sowohl in einer Vorwärtsbewegung der Bodendüse in Bearbeitungsrichtung als auch in einer Rückwärtsbewegung der Bodendüse in Bearbeitungsrichtung effektiv eingesammelt und über den vom Staubsaugergebläse erzeugten Saugluftstrom aus der Bodendüse abtransportiert werden.According to the invention, this problem is solved by a floor nozzle having the features of claim 1 and a vacuum cleaner according to claim 12. Because a dust collection zone is arranged in the suction mouth space in the processing direction in front of the suction mouth and in the processing direction behind the suction mouth, the floor nozzle can very effectively pick up loosened dirt particles and thus ensure effective dust pick-up, especially on carpets. As a result, effective cleaning of the floor surface with sufficiently high flow velocities can be achieved even with low volume flows. With such a floor nozzle, the Dust absorption effectiveness - especially on carpets - can therefore be advantageously increased, so that good performance classes or dust absorption values can be achieved even with low absorption capacities. The effectiveness of the dust absorption can be increased in this way without there being a significant increase in the pushing forces. In addition, the required volume flow for effective cleaning can be further reduced, so that more economical fans can be installed in the vacuum cleaner. The reduction in volume flows also leads to lower flow losses, especially in the case of bagless separators, so that further energy can be saved here. The arrangement of a dust collection zone in the processing direction in front of or behind the suction mouth prevents re-soiling of the floor surface to be cleaned by dirt particles rebounding from the suction chamber wall. This makes it possible to increase the efficiency of the removal of dirt particles that have already been released, since after they have been loosened and before they are transported away by the suction air stream, they initially collect in the dust collection zone. A particularly effective dust pick-up is achieved if a dust collection zone is located both in the processing direction in front of the suction mouth and in the processing direction behind the suction mouth. This ensures that dirt particles loosened by the suction mouth edges are effectively collected both in a forward movement of the floor nozzle in the processing direction and in a backward movement of the floor nozzle in the processing direction and transported away from the floor nozzle via the suction air flow generated by the vacuum cleaner fan.

Die Bodenfläche kann durch einen textilen Bodenbelag wie einen Teppich oder Teppichboden oder durch einen Hartboden wie z. B. ein Holzparkett, Laminat oder einen PVC-Bodenbelag gebildet werden.The floor area can be a textile floor covering such as a carpet or carpeting or a hard floor such. B. a wooden parquet, laminate or PVC flooring can be formed.

Der Staubsauger kann ein Gebläse zur Erzeugung eines Unterdruckes aufweisen, durch den die über eine zu reinigende Bodenfläche geführte Bodendüse Staub und Schmutz von der Bodenfläche aufnimmt. Hierzu wird die Bodendüse durch den Benutzer mittels Schub- und Zugbewegungen in Bearbeitungsrichtung vor und zurück bewegt. Hierdurch gleitet die Bodendüse über die zu reinigende Bodenfläche. Insbesondere bei langflorigen Teppichen gleitet die Unterseite der Bodendüse über den Teppich, während die Unterseite bei Hartböden beabstandet, gegebenenfalls durch Abstandsborsten, über diese Bodenflächen hinweg schwebt. Der Benutzer kann dazu beispielsweise einen mit dem Saugrohr verbundenen Griff des Staubsaugers handhaben. Damit die Reinigung und Pflege des Bodenbelags möglichst effektiv ausgeführt werden kann, ist der Saugmund länglich ausgebildet und verläuft im Wesentlichen quer zur Bearbeitungsrichtung. Länglich ausgebildet bedeutet in diesem Zusammenhang, dass der vorzugsweise im Wesentlichen rechteckige Saugmund eine größere Länge quer zur Bearbeitungsrichtung aufweist, als Breite in Bearbeitungsrichtung. Der Saugmund ist vorzugsweise zwischen 20 und 30 cm quer zur Bearbeitungsrichtung lang und vorzugsweise zwischen einem und 3 cm in Bearbeitungsrichtung breit. Die Bodendüse kann auch an einem selbstständig fahrenden Staubsauger, insbesondere Saugroboter, angeordnet sein, sodass die Bearbeitungsrichtung der Bodendüse der Fahrtrichtung des selbstständig fahrenden Staubsaugers entspricht. Ein Staubsaugergehäuse des Staubsaugers kann eine Staubaufnahmekammer aufweisen, in welcher der über die Bodendüse aufgenommene Staub beispielsweise in einem Staubbeutel gesammelt werden kann.The vacuum cleaner can have a fan for generating a negative pressure by means of which the floor nozzle, which is guided over a floor surface to be cleaned, picks up dust and dirt from the floor surface. For this purpose, the floor nozzle is moved back and forth in the processing direction by the user by means of pushing and pulling movements. This causes the floor nozzle to slide over the floor surface to be cleaned. In the case of long-pile carpets in particular, the underside of the floor nozzle slides over the carpet, while the underside of hard floors is spaced apart, possibly by spacer bristles, floating over these floor surfaces. For this purpose, the user can, for example, handle a handle of the vacuum cleaner connected to the suction tube. So that the cleaning and care of the floor covering can be carried out as effectively as possible, the suction mouth is elongated and runs essentially transversely to the processing direction. In this context, elongated means that the preferably essentially rectangular suction mouth has a greater length transversely to the machining direction than the width in the machining direction. The suction mouth is preferably between 20 and 30 cm across long in the machine direction and preferably between one and 3 cm wide in the machine direction. The floor nozzle can also be arranged on an independently driving vacuum cleaner, in particular a robot vacuum cleaner, so that the processing direction of the floor nozzle corresponds to the direction of travel of the independently driving vacuum cleaner. A vacuum cleaner housing of the vacuum cleaner can have a dust receiving chamber in which the dust received via the floor nozzle can be collected in a dust bag, for example.

Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den nachfolgenden abhängigen Ansprüchen.Advantageous refinements and developments of the invention emerge from the following dependent claims.

Gemäß einer vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, dass sich die Staubsammelzone entlang des Saugmundes erstreckt. Eine sich entlang des Staubsaugermundes erstreckende Staubsammelzone bietet eine effektive Möglichkeit, die von der Saugmund begrenzenden Saugmundkante gelösten Schmutzpartikel aufzusammeln. Erstreckt sich die Staubsammelzone im Wesentlichen über die gesamte Länge des Saugmundes ist eine besonders hohe Staubaufnahme durch die Bodendüse gewährleistet.According to an advantageous embodiment of the invention it is provided that the dust collection zone extends along the suction mouth. A dust collection zone extending along the vacuum cleaner mouth offers an effective possibility of collecting the dirt particles loosened from the suction mouth edge delimiting the suction mouth. If the dust collection zone extends essentially over the entire length of the suction mouth, a particularly high level of dust pick-up by the floor nozzle is guaranteed.

Eine vorteilhafte Ausführung ist, dass die Staubsammelzone von dem Saugmund durch eine Trennwand im Saugmundraum abgetrennt ist. Die Abtrennung der Staubsammelzone durch eine Trennwand im Saugmundraum stellt sicher, dass gelöste und in der Staubsammelzone gesammelte Schmutzpartikel nicht wieder über den Saugmund aus der Bodendüse austreten können. Hierdurch wird eine erneute Anschmutzung der bereits gereinigten Bodenfläche durch die gelösten und gesammelten Schmutzpartikel verhindert.An advantageous embodiment is that the dust collection zone is separated from the suction mouth by a partition in the suction mouth space. The separation of the dust collection zone by a partition in the suction mouth ensures that dirt particles that have been loosened and collected in the dust collection zone cannot escape from the floor nozzle again via the suction mouth. This prevents renewed soiling of the already cleaned floor area from the loosened and collected dirt particles.

Eine bevorzugte Ausführung sieht vor, dass die Trennwand eine Durchströmöffnung aufweist, wobei die Durchströmöffnung den Saugmund strömungstechnisch mit dem Saugkanal verbindet. Die in der Trennwand angeordnete Durchströmöffnung stellt sicher, dass von der Bodenfläche gelöste Schmutzpartikel durch den Saugmund in die Staubsammelzone und über den Saugluftstrom in den Saugkanal gelangen, um effektiv aus der Bodendüse abtransportiert zu werden.A preferred embodiment provides that the partition has a through-flow opening, the through-flow opening connecting the suction mouth with the suction channel in terms of flow. The throughflow opening arranged in the partition wall ensures that dirt particles loosened from the floor surface get through the suction mouth into the dust collection zone and via the suction air flow into the suction channel in order to be effectively transported away from the floor nozzle.

Besonders vorteilhaft ist die Weiterbildung, dass in Bearbeitungsstellung unterhalb der Durchströmöffnung eine die Staubsammelzone bildende Sammelrinne angeordnet ist. Die Sammelrinne ist vorzugsweise als Verlängerung der im Saugmund angeordneten Trennwand ausgebildet. Die Begrenzung der Staubsammelzone durch eine Sammelrinne stellt sicher, dass bereits gelöste Schmutzpartikel zuverlässig in der Staubsammelzone gesammelt werden können, damit diese im Anschluss effektiv über den Saugkanal aus der Bodendüse abtransportiert werden können.The further development is particularly advantageous that, in the processing position, a collecting channel forming the dust collecting zone is arranged below the throughflow opening. The collecting channel is preferably designed as an extension of the partition wall arranged in the suction mouth. The limitation of the dust collection zone by a collecting channel ensures that already loosened dirt particles can be reliably collected in the dust collection zone so that they can then be effectively transported away from the floor nozzle via the suction channel.

Weiter vorteilhaft ist die Ausgestaltung, dass die Sammelrinne gleichzeitig die Saugmundkante bildet. Insbesondere dadurch, dass die Sammelrinne vorderseitig die Staubsammelzone umgrenzt und rückseitig die Saugmundkante bildet, ist eine besonders nahe Anordnung der Staubsammelzone an dem durch die Saugmundkante begrenzten Saugmund möglich. Hierdurch ist eine besonders hohe Staubaufnahme durch die Bodendüse und zuverlässige Staubsammlung in der Staubsammelzone möglich.The configuration is further advantageous in that the collecting channel simultaneously forms the edge of the suction mouth. In particular, because the collecting channel delimits the dust collection zone on the front side and forms the suction mouth edge on the rear side, the dust collection zone can be arranged particularly close to the suction mouth delimited by the suction mouth edge. This enables a particularly high amount of dust to be picked up by the floor nozzle and reliable dust collection in the dust collection zone.

Eine vorteilhafte Ausführungsform der Erfindung sieht vor, dass die Staubsammelzone zwischen Saugmund und Saugkanal angeordnet ist. Die Anordnung der Staubsammelzone zwischen dem Saugmund und dem Saugkanal stellt sicher, dass in der Staubsammelzone gesammelte Schmutzpartikel zuverlässig aus der Staubsammelzone über den Saugluftstrom durch den Saugkanal aus der Bodendüse abtransportiert werden.An advantageous embodiment of the invention provides that the dust collection zone is arranged between the suction mouth and the suction channel. The arrangement of the dust collection zone between the suction mouth and the suction channel ensures that dirt particles collected in the dust collection zone are reliably transported away from the dust collection zone via the suction air flow through the suction channel and out of the floor nozzle.

Gemäß einer vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, dass der Staubsammelzone mindestens eine Nebenluftöffnung zugeordnet ist, die so angeordnet ist, dass ein vom Saugmund unabhängiger Teilluftstrom von der Nebenluftöffnung durch die Staubsammelzone hin zum Saugkanal erzeugbar ist. Die Anordnung einer Nebenluftöffnung im Bereich der Staubsammelzone stellt sicher, dass über den Teilluftstrom in der Staubsammelzone gesammelte Schmutzpartikel unabhängig vom Hauptluftstrom durch den Saugmund abtransportiert werden können. Dadurch, dass der Teilluftstrom durch die Nebenluftöffnung unabhängig vom Hauptluftstrom durch den Saugmund ist, kann ein Abtransport von gesammelten Schmutzpartikeln aus der Staubsammelzone auch bei einem verstopften oder abgedeckten Saugmund gewährleistet werden. Besonders effektiv ist der Abtransport von gesammelten Schmutzpartikeln aus der Staubsammelzone, wenn der Hauptluftstrom durch einen verstopften oder abgedeckten Saugmund vermindert ist und der Saugluftstrom am Saugkanal in diesem Fall zu einem größeren Teil über die Nebenluftöffnung umgeleitet wird. Hierdurch kann ein regelmäßiger Abtransport der gesammelten Schmutzpartikel aus der Staubsammelzone sichergestellt werden, da der Saugmund insbesondere durch das Aufsetzen auf langflorigen Teppichen regelmäßig abgedeckt bzw. verstopft wird, sodass der zwischen Saugmund und Nebenluftöffnung aufgeteilte Saugluftstrom des Saugkanals, regelmäßig zu einem größeren Teil über die Nebenluftöffnung umgeleitet wird.According to an advantageous embodiment of the invention it is provided that the dust collection zone is assigned at least one secondary air opening which is arranged so that a partial air flow independent of the suction mouth can be generated from the secondary air opening through the dust collection zone to the suction channel. The arrangement of a secondary air opening in the area of the dust collection zone ensures that dirt particles collected in the dust collection zone via the partial air flow can be transported away through the suction mouth independently of the main air flow. Because the partial air flow through the secondary air opening is independent of the main air flow through the suction mouth, a removal of collected dirt particles from the dust collection zone can be guaranteed even if the suction mouth is blocked or covered. The removal of collected dirt particles from the dust collection zone is particularly effective when the main air flow is reduced by a clogged or covered suction mouth and the suction air flow on the suction channel is diverted to a greater extent via the secondary air opening in this case. This ensures that the collected dirt particles are regularly transported away from the dust collection zone, since the suction mouth is regularly covered or clogged, especially when it is placed on long-pile carpets, so that the suction air flow of the suction channel divided between the suction mouth and the secondary air opening, regularly to a greater extent via the secondary air opening is diverted.

Eine bevorzugte Ausführung sieht vor, dass die mindestens eine Nebenluftöffnung quer zur Bearbeitungsrichtung seitlich im Gehäuse angeordnet ist. Die seitliche Anordnung der Nebenluftöffnung stellt sicher, dass der Teilluftstrom auch bei langflorigen Teppichen zuverlässig durch die Staubsammelzone geführt wird. Durch die seitliche Anordnung der Nebenluftöffnung in der Nähe der Bodenfläche kann zudem eine zusätzliche Kantenabsaugung durch die Nebenluftöffnung erreicht werden. Hierdurch lassen sich Bereiche nahe von Teppichkanten und Fußleisten effektiv durch die seitliche Nebenluftöffnung an der Bodendüse reinigen.A preferred embodiment provides that the at least one secondary air opening is arranged laterally in the housing transversely to the machining direction. The lateral arrangement of the secondary air opening ensures that the partial air flow is reliably guided through the dust collection zone even with long-pile carpets. Due to the lateral arrangement of the secondary air opening near the floor surface, additional edge suction can be achieved through the secondary air opening. This allows Effective cleaning of areas near carpet edges and skirting boards through the auxiliary air opening on the side of the floor nozzle.

Gemäß einer vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, dass der Saugmundraum eine die Staubsammlung in der Staubsammelzone begünstigende Prallkontur aufweist. Eine solche Prallkontur stellt sicher, dass gelöste Schmutzpartikel zuverlässig in die Staubsammelzone gelangen und dort gesammelt werden.According to an advantageous embodiment of the invention, it is provided that the suction mouth space has an impact contour that promotes dust collection in the dust collection zone. Such an impact contour ensures that loosened dirt particles reliably get into the dust collection zone and are collected there.

Eine vorteilhafte Ausführung ist, dass die Prallkontur so ausgebildet ist, dass durch die Saugmundkante von der Bodenfläche gelöste Schmutzpartikel an der Prallkontur in Richtung der Staubsammelzone abprallen. Bei der Ausgestaltung einer solchen Prallkontur ist zu beachten, dass die gelösten Schmutzpartikel in der Regel in einem gewissen Winkelbereich auf die Prallkontur auftreffen, wobei die durch den Auswurf aus Teppichfasern beschleunigten Schmutzpartikel in der Regel etwa in dem gleichen Ausfallswinkel von der Prallkontur abprallen, wie sie im Einfallswinkel auf die Prallkontur einschlagen. Durch die Erkenntnis, dass der Ausfallswinkel beim Abprallen von der Prallkontur im Wesentlichen dem Einfallswinkel beim Auftreffen auf die Prallkontur entspricht, lässt sich sehr einfach eine die Staubsammlung in der Staubsammelzone begünstigende Prallkontur im Saugmundraum ausbilden. Auf diese Weise lassen sich die Prallvorgänge der gelösten Schmutzpartikel auf der Prallkontur nutzen, um einen zuverlässigen Schmutzabtransport aus der Bodendüse zu gewährleisten und sicherzustellen, dass einmal gelöste Schmutzpartikel nicht wieder auf die Bodenfläche befördert werden.An advantageous embodiment is that the impact contour is designed in such a way that dirt particles released from the bottom surface by the suction mouth edge bounce off the impact contour in the direction of the dust-collecting zone. When designing such an impact contour, it should be noted that the loosened dirt particles usually hit the impact contour in a certain angular range, with the dirt particles accelerated by the ejection from carpet fibers usually bouncing off the impact contour at approximately the same angle as they do hit the impact contour at the angle of incidence. As a result of the knowledge that the angle of emergence when bouncing off the impact contour essentially corresponds to the angle of incidence when striking the impact contour, an impact contour that promotes dust collection in the dust collection zone can be very easily formed in the suction mouth space. In this way, the impact processes of the loosened dirt particles on the impact contour can be used to ensure reliable removal of dirt from the floor nozzle and to ensure that once loosened dirt particles are not returned to the floor surface.

Ferner ist Gegenstand der Erfindung ein Staubsauger zur Reinigung und Pflege von Bodenflächen mit einem Gebläse zur Erzeugung eines Unterdruckes zur Aufnahme von Schmutz mittels eines Luftstromes und einem Abscheidesystem zur Reinigung der aufgenommenen Luft vom Schmutz, wobei der bereits und im Folgenden näher beschriebene Staubsauger eine Bodendüse gemäß der vorherigen und nachfolgenden Beschreibung aufweist.The invention also relates to a vacuum cleaner for cleaning and caring for floor surfaces with a fan for generating a negative pressure to pick up dirt by means of an air stream and a separation system for cleaning the air picked up from dirt, the vacuum cleaner already described in more detail below having a floor nozzle according to of the previous and following description.

Weitere Merkmale, Einzelheiten und Vorteile der Erfindung ergeben sich aufgrund der nachfolgenden Beschreibung sowie anhand der Zeichnungen. Ausführungsbeispiele der Erfindung sind in den folgenden Zeichnungen rein schematisch dargestellt und werden nachfolgend näher beschrieben. Einander entsprechende Gegenstände oder Elemente sind in allen Figuren mit den gleichen Bezugszeichen versehen. Es zeigt

Figur 1
Erfindungsgemäßer Staubsauger mit Bodendüse,
Figur 2
Bodendüse in Frontansicht
Figur 3
Bodendüse in Schnittdarstellung
Figur 4
(Nicht Teil der Erfindung) Bodendüse in perspektivischer Seitenansicht
Figur 5
(Nicht Teil der Erfindung) Bodendüse in perspektivischer Schnittdarstellung
Figur 6
(Nicht Teil der Erfindung) Bodendüse in Schnittdarstellung
Figur 7
(Nicht Teil der Erfindung) Bodendüse in Schnittdarstellung
Figur 8
(Nicht Teil der Erfindung) Bodendüse in Schnittdarstellung
Figur 9
Erfindungsgemäße Bodendüse in Schnittdarstellung
Figur 10
Erfindungsgemäße Bodendüse in Schnittdarstellung
Further features, details and advantages of the invention emerge on the basis of the following description and on the basis of the drawings. Embodiments of the invention are shown purely schematically in the following drawings and are described in more detail below. Objects or elements that correspond to one another are provided with the same reference symbols in all figures. It shows
Figure 1
Vacuum cleaner according to the invention with floor nozzle,
Figure 2
Floor nozzle in front view
Figure 3
Floor nozzle in sectional view
Figure 4
(Not part of the invention) Floor nozzle in perspective side view
Figure 5
(Not part of the invention) Floor nozzle in a perspective sectional view
Figure 6
(Not part of the invention) Floor nozzle in sectional view
Figure 7
(Not part of the invention) Floor nozzle in sectional view
Figure 8
(Not part of the invention) Floor nozzle in sectional view
Figure 9
Floor nozzle according to the invention in a sectional view
Figure 10
Floor nozzle according to the invention in a sectional view

In den Figuren mit dem Bezugszeichen 1 bezeichnet ist eine erfindungsgemäße Bodendüse rein schematisch dargestellt. Die Darstellung gemäß Figur 1 zeigt einen erfindungsgemäßen Staubsauger 2 mit einer an den Staubsauger 2 angeschlossenen Bodendüse 1. Bei dem im Ausführungsbeispiel dargestellten Staubsauger 1 handelt es sich um einen sogenannten Kanister-Staubsauger. Die Bodendüse 1 ist hier über ihren Anschlussstutzen 19 mit einem vorzugsweise teleskopierbar ausgestalteten Saugrohr 26 verbunden. Weiterhin weist die Bodendüse 1 bei diesem gezeigten Ausführungsbeispiel ein eigenes vom Staubsaugergehäuse 21, 21a unabhängiges Gehäuse 3 auf. Das teleskopierbare Saugrohr 26 geht in einen Handgriff 27 über, an dem ein Saugschlauch 16 angeschlossen ist, der mit dem Staubsaugergehäuse 21, 21a verbunden ist. Über ein elektrisches Anschlusskabel 22 wird ein in dem Staubsaugergehäuse 21, 21a integriertes (nicht gezeigtes) Gebläse des Staubsaugers 2 mit Strom betrieben, um einen Unterdruck zu erzeugen. Mittels dieses Unterdruckes werden Schmutz und Dreck von der zu reinigenden Bodenfläche 30 (Fig. 2, 3, 6, 8 u. 9) durch einen Luftstrom über den Saugmund 6 (Fig. 4) der Bodendüse 1 aufgenommen und über das Saugrohr 26 und den Saugschlauch 16 in das Gehäuse 21, 21a des Staubsaugers 2 abtransportiert. In diesem Gehäuse 21, 21a vorgesehen ist ein Abscheidesystem 24, welches im Ausführungsbeispiel als Staubbeutel ausgebildet ist. Dieses Abscheidesystem 24 befindet sich in einem durch die Gehäuseteile 21 und 21a des Staubsaugers 2 gebildeten Staubraum 25. Dieser Staubraum 25 ist durch einen Klappmechanismus zwischen den Staubsaugergehäuseteilen 21 und 21a zugänglich und geöffnet dargestellt, sodass das Abscheidesystem 24 sichtbar und entnehmbar ist. Für den Betrieb des Staubsaugers 2 wird der Staubraum 25 geschlossen und ein Unterdruck erzeugt. Der durch den Unterdruck erzeugte Luftstrom wird in dem Abscheidesystem 24 von Schmutz und Dreck befreit und über ein Abluftgitter 23 aus dem Staubsauger 2 herausgeleitet. Zum Ein- und Ausschalten des Staubsaugers 2 weist dieser eine Trittschaltung 18 auf. Diese Trittschaltung 18 umfasst Schalter, die ausreichend groß sind, damit ein Benutzer diese mit dem Fuß betätigen kann. Die Trittschaltung 18 weist üblicherweise auch einen Schalter zur Betätigung der im Staubsaugergehäuse 21, 21a integrierten (nicht gezeigten) Wickelautomatik für das Anschlusskabel 22 auf. An dem Handgriff 27 befindet sich zudem eine Handschaltung 17, mit der Funktionen des Staubsaugers 2 aktiviert werden können. Außerdem kann der Staubsauger 2 über die Handschaltung 17 ein- und ausgeschaltet werden und es können Leistungsstufen des (nicht gezeigten) Gebläses ausgewählt werden.In the figures, denoted by the reference number 1, a floor nozzle according to the invention is shown purely schematically. The representation according to Figure 1 shows a vacuum cleaner 2 according to the invention with a floor nozzle 1 connected to the vacuum cleaner 2. The vacuum cleaner 1 shown in the exemplary embodiment is a so-called canister vacuum cleaner. The floor nozzle 1 is connected here via its connecting piece 19 to a suction pipe 26, which is preferably designed to be telescopic. Furthermore, in this exemplary embodiment shown, the floor nozzle 1 has its own housing 3 that is independent of the vacuum cleaner housing 21, 21a. The telescopic suction tube 26 merges into a handle 27 to which a suction hose 16 is connected, which is connected to the vacuum cleaner housing 21, 21a. A fan (not shown) of the vacuum cleaner 2, which is integrated in the vacuum cleaner housing 21, 21a, is operated with electricity via an electrical connection cable 22 in order to generate a negative pressure. By means of this negative pressure, dirt and grime are removed from the floor surface 30 to be cleaned ( Fig. 2 , 3 , 6th , 8th u. 9) by an air stream over the suction mouth 6 ( Fig. 4 ) of the floor nozzle 1 and transported away via the suction pipe 26 and the suction hose 16 into the housing 21, 21a of the vacuum cleaner 2. Provided in this housing 21, 21a is a separation system 24 which, in the exemplary embodiment, is designed as a dust bag. This separation system 24 is located in a dust space 25 formed by the housing parts 21 and 21a of the vacuum cleaner 2. This dust space 25 is accessible and opened by a folding mechanism between the vacuum cleaner housing parts 21 and 21a, so that the separation system 24 is visible and can be removed. For the operation of the vacuum cleaner 2, the dust chamber 25 is closed and a negative pressure is generated. The air flow generated by the negative pressure is freed of dirt and grime in the separation system 24 and is guided out of the vacuum cleaner 2 via an exhaust air grille 23. To switch the vacuum cleaner 2 on and off, it has a step switch 18. This step circuit 18 includes switches that are sufficiently large that a user can operate them with his foot. The step switch 18 usually also has a switch for actuating the automatic winding system (not shown) for the connecting cable 22 that is integrated in the vacuum cleaner housing 21, 21a. On the handle 27 there is also a manual switch 17 with which the functions of the vacuum cleaner 2 can be activated. In addition, the vacuum cleaner 2 can be switched on and off via the manual control 17 and the power levels of the fan (not shown) can be selected.

Ein Benutzer des Staubsaugers 1 kann diesen an dem Handgriff 27 ergreifen und so die Bodendüse 1 in einer mittels einer Schub- und Zugbewegung in der als Doppelpfeil gekennzeichneten Bearbeitungsrichtung 5 vor- und zurückschieben, um die Bodenfläche 30 (Fig. 2, 3, 6, 8 u. 9) zu reinigen. Hierbei gleitet die Bodendüse 1 über die zu reinigende Bodenfläche 30 (Fig. 2, 3, 6, 8 u. 9). Besonders bei langflorigen Teppichen gleitet die Unterseite 4 (Fig. 4) der Bodendüse 1 über die Bodenfläche 30 (Fig. 2, 3, 6, 8 u. 9), während die Unterseite 4 (Fig. 2) bei Hartböden beabstandet, gegebenenfalls durch Abstandsborsten, über diese Bodenflächen 30 (Fig. 2, 3, 6, 8 u. 9) hinweg schwebt. Im dargestellten Ausführungsbeispiel weist die Bodendüse 1 außerdem Abstützelemente 20 in Form von Rädern auf, welche einen definierten Abstand der Unterseite 4 (Fig. 4) zu den zu reinigenden Bodenflächen 30 (Fig. 2, 3, 6, 8 u. 9) und eine einfache Handhabung beim Vor- und Zurückschieben der Bodendüse 1 sicherstellen.A user of the vacuum cleaner 1 can take hold of it by the handle 27 and thus push the floor nozzle 1 back and forth by means of a pushing and pulling movement in the machining direction 5 marked as a double arrow in order to move the floor surface 30 ( Fig. 2 , 3 , 6th , 8th u. 9) to clean. The floor nozzle 1 slides over the floor surface 30 to be cleaned ( Fig. 2 , 3 , 6th , 8th u. 9). Especially with long-pile carpets, the underside 4 slides ( Fig. 4 ) of the floor nozzle 1 over the floor surface 30 ( Fig. 2 , 3 , 6th , 8th u. 9), while the bottom 4 ( Fig. 2 ) in the case of hard floors spaced apart, if necessary by spacer bristles, over these floor surfaces 30 ( Fig. 2 , 3 , 6th , 8th u. 9) floats away. In the illustrated embodiment, the floor nozzle 1 also has support elements 20 in the form of wheels, which are a defined distance from the bottom 4 ( Fig. 4 ) to the floor surfaces to be cleaned 30 ( Fig. 2 , 3 , 6th , 8th u. 9) and ensure easy handling when pushing the floor nozzle 1 back and forth.

Die Figur 2 zeigt eine Bodendüse 1 in Frontansicht, d. h. aus Sicht der Bearbeitungsrichtung 5. Wie zu erkennen ist, liegt die als Gleitsohle ausgebildete Unterseite 4 auf den Teppichfasern 32 der Bodenfläche 30 auf. Das Gehäuse 3 der Bodendüse 1 weist einen Anschlussstutzen 19 auf, über den ein Staubsauger 2 (Fig. 1) mit der Bodendüse 1 verbunden werden kann. Durch den im Anschlussstutzen 19 gebildeten Saugkanal 9 wird dann der durch das Staubsaugergebläse des Staubsaugers 1 erzeugte Saugluftstrom 33 geleitet, wodurch von der Bodendüse 1 aufgenommene Schmutzpartikel 31 (Fig. 3) aus der Bodendüse 1 abtransportiert werden. In Figur 2 ist eine Schnittebene A-A in Bearbeitungsrichtung 5 durch die Bodendüse 1 gezeigt, die im Folgenden der näheren Erläuterung dient.The Figure 2 shows a floor nozzle 1 in a front view, ie from the perspective of the processing direction 5. As can be seen, the underside 4, which is designed as a sliding sole, rests on the carpet fibers 32 of the floor surface 30. The housing 3 of the floor nozzle 1 has a connection piece 19 via which a vacuum cleaner 2 ( Fig. 1 ) can be connected to the floor nozzle 1. The suction air flow 33 generated by the vacuum cleaner fan of the vacuum cleaner 1 is then passed through the suction channel 9 formed in the connection piece 19, whereby dirt particles 31 ( Fig. 3 ) can be removed from the floor nozzle 1. In Figure 2 shows a sectional plane AA in the machining direction 5 through the floor nozzle 1, which is used for more detailed explanation below.

Gemäß Figur 3 ist eine Schnittdarstellung einer Bodendüse 1 gezeigt, wie sie aus dem Stand der Technik bekannt ist. Die Bodendüse 1 befindet sich in einer Vorwärtsbewegung in Bearbeitungsrichtung 5, d. h. die Bodendüse 1 wird vom Benutzer in der gezeigten Darstellung von rechts nach links bewegt. Die vordere Saugmundkante 7 des in der Gleitsohle 4 befindlichen Saugmundes 6 spreizt beim Überstreichen des Teppichflors die Teppichfasern 32 auf der zu reinigenden Bodenfläche 30 auf, sodass anhaftende Schmutzpartikel 31 aus den Teppichfasern 32 ausgeworfen werden. Die durch den Auswurf der Schmutzpartikel 31 resultierende Trajektorie der Schmutzpartikel 31 ist gestrichelt angedeutet. An der beispielhaft eingezeichneten Flugbahn der Schmutzpartikel 31 ist zu erkennen, dass diese an der oberen Wand des Saugmundraumes 8 abprallen und vor der hinteren Saugmundkante 7a wieder auf die zu reinigende Bodenfläche 30 fallen, sodass sie von der hinteren Saugmundkante 7a wieder in die Teppichfasern 32 eingearbeitet werden. Durch diese erneute Wiederanschmutzung der bereits gereinigten Bodenfläche 30 ist eine effektive Staubaufnahme und zuverlässige Reinigung der Bodenfläche 30 nicht möglich.According to Figure 3 is a sectional view of a floor nozzle 1 shown as it is known from the prior art. The floor nozzle 1 is moving forward in the machining direction 5, ie the floor nozzle 1 is moved by the user from right to left in the illustration shown. The front suction mouth edge 7 of the suction mouth 6 located in the sliding sole 4 spreads the carpet fibers 32 on the floor surface 30 to be cleaned when the carpet pile is passed over, so that adhering dirt particles 31 are ejected from the carpet fibers 32. The trajectory of the dirt particles 31 resulting from the ejection of the dirt particles 31 is indicated by dashed lines. The trajectory of the dirt particles 31 drawn as an example shows that they bounce off the upper wall of the suction mouth space 8 and fall back onto the floor surface 30 to be cleaned in front of the rear suction mouth edge 7a, so that they are worked into the carpet fibers 32 again from the rear suction mouth edge 7a become. As a result of this renewed soiling of the already cleaned floor surface 30, effective dust absorption and reliable cleaning of the floor surface 30 are not possible.

In Figur 4 ist eine erfindungsgemäße Bodendüse 1 für einen Staubsauger 2 (Fig. 1) in einer perspektivischen Seitenansicht gezeigt. Bei der hier dargestellten Ausführungsform weist die Unterseite 4 der Bodendüse 1 einen länglichen, quer zur Bearbeitungsrichtung 5 verlaufenden Saugmund 6 auf. Der Saugmund 6 stellt eine Öffnung des Gehäuses 3 in den von dem Gehäuse 3 gebildeten Saugmundraum 8 dar. Über den Saugmundraum 8 ist der Saugmund 6 mit einem Saugkanal 9 (Fig. 5) verbunden, durch den der von dem Gebläse des Staubsaugers 2 (Fig. 1) erzeugte Luftstrom geleitet wird. Hierzu wird die Bodendüse 2 über den Anschlussstutzen 19 mit dem Saugrohr 26 (Fig. 1) verbunden. Wie zu erkennen ist, befindet sich an der hinteren 7a der beiden den Saugmund 6 begrenzenden Saugmundkanten 7, 7a eine Trennwand 11a, die einen Teil des Saugmundraumes 8 abtrennt. Oberhalb der Trennwand 11a befindet sich eine Durchströmöffnung 12a, durch die der Saugmund 6 strömungstechnisch mit dem Saugkanal 9 (Fig. 5) verbunden ist. Weiterhin ist zu erkennen, dass die Saugmundraumwand eine speziell geformte Prallkontur 15 aufweist. Außerdem ist in dem Gehäuse 3 der Bodendüse 1 eine seitlich angeordnete Nebenluftöffnung 14 zu erkennen, die einen vom Saugmund unabhängigen Teilluftstrom 34 (Fig. 8) hin zum Saugkanal 9 (Fig. 5) erzeugt.In Figure 4 is a floor nozzle 1 according to the invention for a vacuum cleaner 2 ( Fig. 1 ) shown in a perspective side view. In the embodiment shown here, the underside 4 of the floor nozzle 1 has an elongated suction mouth 6 running transversely to the machining direction 5. The suction mouth 6 represents an opening of the housing 3 in the suction mouth space 8 formed by the housing 3. The suction mouth 6 is connected to a suction channel 9 ( Fig. 5 ) through which the fan of the vacuum cleaner 2 ( Fig. 1 ) generated air flow is conducted. For this purpose, the floor nozzle 2 is connected to the suction pipe 26 ( Fig. 1 ) connected. As can be seen, on the rear 7a of the two suction mouth edges 7, 7a delimiting the suction mouth 6, there is a partition wall 11a which separates part of the suction mouth space 8. Above the partition wall 11a there is a throughflow opening 12a through which the suction mouth 6 is fluidically connected to the suction channel 9 ( Fig. 5 ) connected is. It can also be seen that the suction mouth wall has a specially shaped impact contour 15. In addition, a laterally arranged secondary air opening 14 can be seen in the housing 3 of the floor nozzle 1, which provides a partial air flow 34 ( Fig. 8 ) to suction channel 9 ( Fig. 5 ) generated.

Die Figur 5 zeigt schematisch eine erfindungsgemäße Bodendüse 1 gemäß Figur 4 für einen Staubsauger 2 (Fig. 1) zur Reinigung und Pflege von Bodenflächen 30 (Fig. 4) aus einer perspektivischen Seitenansicht in Schnittdarstellung. Der Saugmundraum 8 im Gehäuse 3 der Bodendüse 1 ist durch die Schnittdarstellung aufgeschnitten dargestellt. An der hinteren Saugmundkante 7a des Saugmundes 6 befindet sich eine Trennwand 11a, die den Saugmund 6 von einer Staubsammelzone 10a im Saugmundraum 8 abtrennt. Die Staubsammelzone 10a ist durch eine Sammelrinne 13a gebildet, welche sich unterhalb der Durchströmöffnung 12a befindet. Die Durchströmöffnung 12a bildet, wie aus Figur 5 ersichtlich, eine Verbindung des Saugmundes 6 hin zum Saugkanal 9. Die unterhalb der Durchströmöffnung 12a gebildete Staubsammelzone 10a erstreckt sich, wie aus Figur 5 gut zu erkennen, quer zur Bearbeitungsrichtung 5 entlang des länglichen Saugmundes 6. Die Staubsammelzone 10a ist in Bearbeitungsrichtung 5 hinter dem Saugmund 6 angeordnet, sodass sich bei einer Vorwärtsbewegung der Bodendüse 1 in Bearbeitungsrichtung 5 von der vorderen Saugmundkante 7 ausgeworfene Schmutzpartikel 31 (Fig. 6) in der Staubsammelzone 10a hinter der hinteren Saugmundkante 7a sammeln. Die hier gesammelten Schmutzpartikel 31 (Fig. 6) werden über den durch den Anschlussstutzen 19 gebildeten Saugkanal 9 aus der Staubsammelzone 10a abtransportiert. Die beschriebene Vorwärtsbewegung der Bodendüse in Bearbeitungsrichtung 5 ist in der Schnittdarstellung gemäß Figur 6 näher erläutert.The Figure 5 shows schematically a floor nozzle 1 according to the invention according to Figure 4 for a vacuum cleaner 2 ( Fig. 1 ) for cleaning and maintaining floor surfaces 30 ( Fig. 4 ) from a perspective side view in sectional view. The suction mouth space 8 in the housing 3 of the floor nozzle 1 is shown cut open by the sectional view. At the rear edge of the suction mouth 7a of the suction mouth 6 there is a partition 11a which separates the suction mouth 6 from a dust collecting zone 10a in the suction mouth space 8. The dust collection zone 10a is formed by a collecting channel 13a which is located below the throughflow opening 12a. The throughflow opening 12a forms, as from Figure 5 can be seen, a connection of the suction mouth 6 to the suction channel 9. The dust collection zone 10a formed below the flow opening 12a extends, as shown in FIG Figure 5 easy to see, transversely to the processing direction 5 along the elongated suction mouth 6. The dust collecting zone 10a is arranged in the processing direction 5 behind the suction mouth 6, so that when the floor nozzle 1 moves forward in the processing direction 5, dirt particles 31 ( Fig. 6 ) collect in the dust collection zone 10a behind the rear suction mouth edge 7a. The dirt particles 31 collected here ( Fig. 6 ) are transported away from the dust collection zone 10a via the suction channel 9 formed by the connection piece 19. The described forward movement of the floor nozzle in the machining direction 5 is shown in the sectional illustration according to FIG Figure 6 explained in more detail.

Die Figur 6 zeigt schematisch eine erfindungsgemäße Bodendüse 1 gemäß Figur 4 für einen Staubsauger 2 (Fig. 1) zur Reinigung und Pflege von Bodenflächen 30 (Fig. 4) aus einer Seitenansicht in Schnittdarstellung gemäß der in Figur 2 eingezeichneten Schnittebene A-A. Die Schnittdarstellung zeigt, dass die Bodendüse 1 mit der Gleitsohle der Unterseite 4 von rechts nach links über die Teppichfasern 32 in einer Vorwärtsbewegung in Bearbeitungsrichtung 5 streicht. Hierdurch werden die Teppichfasern 32 von der vorderen Saugmundkante 7 des Saugmunds 6 aufgebogen und anhaftende Schmutzpartikel 31 werden gemäß der gestrichelt eingezeichneten Flugbahnen aus den Teppichfasern 32 geschleudert. Der Saugmundraum 8 weist eine die Staubsammlungen in der Staubsammelzone 10a begünstigende Prallkontur 15 auf. Hierdurch prallen die ausgeworfenen Schmutzpartikel 31 an der Prallkontur 15 ab und werden einfach durch die Durchströmöffnung 12a in Richtung der Staubsammelzone 10a befördert. Auf diese Weise sammeln sich die von der Bodenfläche 30 gelösten Schmutzpartikel 31 durch die Vorwärtsbewegung der Saugmundkante 7 und das Abprallen an der Prallkontur 15 in der Staubsammelzone 10a hinter dem Saugmund 6. Wie zu erkennen, ist die Prallkontur 15 so ausgestaltet, dass die gelösten Schmutzpartikel 31 in der Regel in einem gewissen Winkelbereich auf die Prallkontur 15 auftreffen, wobei die durch den Auswurf aus den Teppichfasern 32 beschleunigten Schmutzpartikel 31 in der Regel etwa in dem gleichen Ausfallswinkel von der Prallkontur 15 abprallen, wie sie im Einfallswinkel auf die Prallkontur 15 einschlagen. Aufgrund der Gegebenheit, dass der Ausfallswinkel der Schmutzpartikel 31 beim Abprallen von der Prallkontur 15 im Wesentlichen dem Einfallswinkel beim Auftreffen der Schmutzpartikel 21 auf die Prallkontur 15 entspricht, lässt sich sehr einfach eine die Staubsammlung in der Staubsammelzone 10a begünstigende Prallkontur 15 im Saugmundraum 8 ausbilden. Hierdurch lassen sich die Prallvorgänge der gelösten Schmutzpartikel 31 auf der Prallkontur 15 nutzen, um einen zuverlässigen Schmutzabtransport aus der Bodendüse 1 zu gewährleisten und um sicherzustellen, dass einmal gelöste Schmutzpartikel 31 nicht wieder auf die Bodenfläche 30 befördert werden. Die Staubsammelzone 10a ist zwischen dem Saugmund 6 und dem Saugkanal 9 angeordnet, sodass in der Staubsammelzone 10a gesammelte Schmutzpartikel 31 einfach durch den im Saugkanal 9 herrschenden Saugluftstrom 33 abtransportiert werden können. Die sich entlang des Saugmundes 6 erstreckende Staubsammelzone 10a ist durch eine Trennwand 11a gegenüber dem Saugmund 6 abgetrennt. Eine Verbindung zum Saugmund 6 ist über die Durchströmöffnung 12a in der Trennwand 11a gegeben. Unterhalb der Durchströmöffnung 12a ist die Sammelrinne 13a zu erkennen, durch welche die Staubsammelzone 10a begrenzt und gebildet ist. Aus Figur 6 lässt sich auch gut erkennen, dass die Sammelrinne 13a zugleich die hintere Saugmundkante 7a bildet. Zur näheren Erläuterung ist in Figur 6 eine Schnittebene B-B eingezeichnet, auf die im Folgenden eingegangen wird.The Figure 6 shows schematically a floor nozzle 1 according to the invention according to Figure 4 for a vacuum cleaner 2 ( Fig. 1 ) for cleaning and maintaining floor surfaces 30 ( Fig. 4 ) from a Side view in section according to the in Figure 2 drawn section plane AA. The sectional view shows that the floor nozzle 1 with the sliding sole of the underside 4 strokes from right to left over the carpet fibers 32 in a forward movement in the processing direction 5. As a result, the carpet fibers 32 are bent up from the front suction mouth edge 7 of the suction mouth 6 and adhering dirt particles 31 are thrown out of the carpet fibers 32 according to the trajectories shown in dashed lines. The suction mouth space 8 has an impact contour 15 which promotes the dust collection in the dust collection zone 10a. As a result, the ejected dirt particles 31 bounce off the impact contour 15 and are simply conveyed through the through-flow opening 12a in the direction of the dust-collecting zone 10a. In this way, the dirt particles 31 released from the bottom surface 30 collect as a result of the forward movement of the suction mouth edge 7 and the rebound on the impact contour 15 in the dust collecting zone 10a behind the suction mouth 6. As can be seen, the impact contour 15 is designed in such a way that the loosened dirt particles 31 usually impinge on the impact contour 15 in a certain angular range, the dirt particles 31 accelerated by the ejection from the carpet fibers 32 generally bouncing off the impact contour 15 at approximately the same angle as they strike the impact contour 15 at the angle of incidence. Due to the fact that the angle of incidence of the dirt particles 31 when bouncing off the impact contour 15 essentially corresponds to the angle of incidence when the dirt particles 21 hit the impact contour 15, an impact contour 15 in the suction mouth space 8 that promotes dust collection in the dust collection zone 10a can be formed very easily. In this way, the impact processes of the loosened dirt particles 31 on the impact contour 15 can be used to ensure reliable removal of dirt from the floor nozzle 1 and to ensure that once loosened dirt particles 31 are not transported back onto the floor surface 30. The dust collection zone 10a is arranged between the suction mouth 6 and the suction channel 9, so that dirt particles 31 collected in the dust collection zone 10a can easily be transported away by the suction air flow 33 prevailing in the suction channel 9. The dust collection zone 10a extending along the suction mouth 6 is separated from the suction mouth 6 by a partition 11a. A connection to the suction mouth 6 is given via the throughflow opening 12a in the partition 11a. The collecting channel 13a, by which the dust collecting zone 10a is delimited and formed, can be seen below the throughflow opening 12a. Out Figure 6 it can also be clearly seen that the collecting channel 13a at the same time forms the rear edge 7a of the suction mouth. For a more detailed explanation, see Figure 6 a section plane BB is drawn, which will be discussed below.

Die Figur 7 zeigt eine weitere Seitenansicht der Bodendüse 1 in Schnittdarstellung. In dieser Schnittdarstellung ist gut zu erkennen, dass eine Nebenluftöffnung 14a der hinter dem Saugmund 6 angeordneten Staubsammelzone 10a zugeordnet ist. Über diese Nebenluftöffnung 14a ist ein vom Saugmund unabhängiger Teilluftstrom 34 (Fig. 8) durch die Staubsammelzone 10a hin zum Saugkanal 9 erzeugbar. Über diesen Teilluftstrom 34 (Fig. 8) lassen sich in der Staubsammelzone 10a gesammelte Schmutzpartikel 31 sehr einfach über den im Saugkanal 9 herrschenden Saugluftstrom 33 abtransportieren. Da der Teilluftstrom 34 (Fig. 8) durch die Nebenluftöffnung 14a unabhängig vom Hauptluftstrom durch den Saugmund 6 ist, kann ein Abtransport von gesammelten Schmutzpartikeln 31 aus der Staubsammelzone 10a auch bei einem verstopften oder abgedeckten Saugmund 6 gewährleistet werden. Der Abtransport von gesammelten Schmutzpartikeln 31 aus der Staubsammelzone 10a funktioniert besonders zuverlässig, wenn der Hauptluftstrom durch einen verstopften oder abgedeckten Saugmund 6 reduziert ist und der am Saugkanal 9 anliegende Saugluftstrom 33 in diesem Fall zu einem größeren Teil über die Nebenluftöffnung 14a umgeleitet wird. Der Abtransport der gesammelten Schmutzpartikel 31 aus der Staubsammelzone 10a erfolgt somit regelmäßig, da der Saugmund 6 insbesondere durch das Aufsetzen auf langflorigen Teppichen häufig abgedeckt bzw. verstopft wird, sodass der zwischen Saugmund 6 und Nebenluftöffnung 14a aufgeteilte Saugluftstrom 33 des Saugkanals 9, regelmäßig zu einem höheren Anteil über die Nebenluftöffnung 14a umgeleitet wird. Die Anordnung der Nebenluftöffnung 14a quer zur Bearbeitungsrichtung 5 seitlich im Gehäuse 3 stellt sicher, dass der Teilluftstrom 34 (Fig. 8) auch bei langflorigen Teppichen zuverlässig von der Nebenluftöffnung 14a durch die Staubsammelzone 10a geführt wird. Die seitliche Anordnung der Nebenluftöffnung 14a in der Nähe der Bodenfläche 30 ermöglicht außerdem eine zusätzliche Kantenabsaugung durch die Nebenluftöffnung 14a. Dadurch lassen sich Teppichkanten und Bodenflächenbereich an Fußleisten effektiv durch die seitliche Nebenluftöffnung 14a an der Bodendüse 1 reinigen.The Figure 7 shows a further side view of the floor nozzle 1 in a sectional illustration. In this sectional illustration it can be clearly seen that a secondary air opening 14a is assigned to the dust-collecting zone 10a arranged behind the suction mouth 6. About these Secondary air opening 14a is a partial air flow 34 that is independent of the suction mouth ( Fig. 8 ) can be generated through the dust collection zone 10a towards the suction channel 9. Via this partial air flow 34 ( Fig. 8 ) dirt particles 31 collected in the dust collection zone 10a can be very easily transported away via the suction air flow 33 prevailing in the suction channel 9. Since the partial air flow 34 ( Fig. 8 ) is independent of the main air flow through the suction mouth 6 through the secondary air opening 14a, a removal of collected dirt particles 31 from the dust collecting zone 10a can be ensured even if the suction mouth 6 is blocked or covered. The removal of collected dirt particles 31 from the dust collection zone 10a functions particularly reliably if the main air flow is reduced by a blocked or covered suction mouth 6 and the suction air flow 33 applied to the suction channel 9 is in this case diverted to a greater extent via the secondary air opening 14a. The removal of the collected dirt particles 31 from the dust collection zone 10a thus takes place regularly, since the suction mouth 6 is often covered or clogged, especially when it is placed on long-pile carpets, so that the suction air flow 33 of the suction channel 9 divided between suction mouth 6 and secondary air opening 14a regularly becomes one higher proportion is diverted via the secondary air opening 14a. The arrangement of the secondary air opening 14a transversely to the machining direction 5 laterally in the housing 3 ensures that the partial air flow 34 ( Fig. 8 ) is reliably guided from the secondary air opening 14a through the dust collection zone 10a even with long-pile carpets. The lateral arrangement of the secondary air opening 14a in the vicinity of the floor surface 30 also enables additional edge suction through the secondary air opening 14a. As a result, carpet edges and floor surface area on skirting boards can be effectively cleaned through the lateral auxiliary air opening 14a on floor nozzle 1.

Figur 8 offenbart eine Schnittdarstellung durch die erfindungsgemäße Bodendüse 1 gemäß der in Figur 6 eingezeichneten Schnittebene B-B. Die in der Staubsammelzone 10a gesammelten Schmutzpartikel 31 werden, wie aus dieser Darstellung ersichtlich, über den Saugluftstrom 33 durch den Saugkanal 8 des Anschlussstutzens 19 abtransportiert. Der Staubsammelzone 10a, die sich entlang des länglichen Saugmundes 6 erstreckt, sind zwei seitliche Nebenluftöffnungen 14, 14a zugeordnet, über welche zwei Teilluftströmungen 34 durch die Staubsammelzone 10a hin zum Saugkanal 9 geleitet werden. Die beiden Teilluftströme 34 sind unabhängig von dem Hauptluftstrom durch den Saugmund 6 und dienen hauptsächlich dem zuverlässigen Abtransport der in der Staubsammelzone 10a gesammelten Schmutzpartikel 31. Durch die Anordnung von zwei seitlichen Nebenluftöffnungen 34 kann die sich entlang des Saugmundes 6 erstreckende Staubsammelzone 10a zuverlässig durch die Teilluftströme 34 von gesammelten Schmutzpartikeln 31 befreit werden. Figure 8 discloses a sectional view through the floor nozzle 1 according to the invention according to the FIG Figure 6 drawn section plane BB. As can be seen from this illustration, the dirt particles 31 collected in the dust collecting zone 10a are transported away via the suction air flow 33 through the suction channel 8 of the connecting piece 19. The dust collection zone 10a, which extends along the elongated suction mouth 6, is assigned two lateral secondary air openings 14, 14a, via which two partial air flows 34 are guided through the dust collection zone 10a to the suction channel 9. The two partial air flows 34 are independent of the main air flow through the suction mouth 6 and mainly serve to reliably transport away the dirt particles 31 collected in the dust collection zone 10a. The arrangement of two lateral secondary air openings 34 allows the dust collection zone 10a, which extends along the suction mouth 6, to pass reliably through the partial air flows 34 are freed from collected dirt particles 31.

Aus Figur 9 geht eine erfindungsgemäße Ausführungsform hervor, bei der zwei Staubsammelzonen 10, 10a vorgesehen sind. Eine der Staubsammelzonen 10 ist in Bearbeitungsrichtung 5 vor dem Saugmund 6 und eine Staubsammelzone 10a ist in Bearbeitungsrichtung 5 hinter dem Saugmund 6 angeordnet. Die Staubsammelzonen 10, 10a erstrecken sich jeweils entlang der zugeordneten Saugmundkante 7, 7a des Saugmundes. Sie sind jeweils durch eine Sammelrinne 13, 13a gebildet. Den Staubsammelzonen 10, 10a können jeweils zwei Nebenluftöffnungen 14, 14a (Fig. 8)zugeordnet sein. Jede der beiden Staubsammelzonen 10, 10a ist durch eine Trennwand 11, 11a im Saugmundraum 8 von dem Saugmund 6 abgetrennt. Oberhalb der Trennwände 11, 11a sind Durchströmöffnungen 12, 12a vorgesehen, die jeweils eine Strömungsverbindung zwischen dem Saugmund 6 und dem Saugkanal 9 herstellen. Der Saugkanal 9 ist in dem dargestellten Beispiel in zwei Teilsaugkanäle 9a, 9b aufgeteilt. Hierdurch ist ein Abtransport gesammelter Schmutzpartikel 31 aus beiden Staubsammelzonen 10, 10a gewährleistet. Die in Figur 9 schematisch dargestellte Bodendüse 1 befindet sich in einer Vorwärtsbewegung in Bearbeitungsrichtung 5, d. h. sie wird vom Benutzer von rechts nach links bewegt, sodass die Gleitsohle 4 über die Teppichfasern 32 der Bodenfläche 30 gleitet. Hierbei werden die Teppichfasern von der vorderen Saugmundkante 7 des Saugmundes 6 aufgebogen und anhaftende Schmutzpartikel 31 werden aus den Teppichfasern 32 herausgeschleudert. Die herausgeschleuderten Schmutzpartikel 31 fliegen hierdurch gemäß der strichpunktiert dargestellten Flugbahnen gegen die im Saugmundraum 8 angeordnete Prallkontur 15. Wie zu erkennen ist, begünstigt die Ausgestaltung der Prallkontur 15 die Staubsammlung in der hinteren Staubsammelzone 10a bei der Vorwärtsbewegung der Bodendüse 1. Die von der vorderen Saugmundkante gelösten Schmutzpartikel 31 prallen an der Prallkontur 15 in Richtung der hinteren Staubsammelzone 10a ab, da der Abprallwinkel dem Anprallwinkel im Wesentlichen entspricht. Die abgeprallten Schmutzpartikel werden in der hinteren Staubsammelzone 10a gesammelt, bevor sie über den Saugluftstrom 33 im Saugkanal 9 abtransportiert werden.Out Figure 9 shows an embodiment according to the invention in which two dust collecting zones 10, 10a are provided. One of the dust collecting zones 10 is arranged in front of the suction mouth 6 in the machining direction 5 and a dust collecting zone 10a is arranged behind the suction mouth 6 in the machining direction 5. The dust collecting zones 10, 10a each extend along the associated suction mouth edge 7, 7a of the suction mouth. They are each formed by a collecting channel 13, 13a. The dust collection zones 10, 10a can each have two secondary air openings 14, 14a ( Fig. 8 ) must be assigned. Each of the two dust collecting zones 10, 10a is separated from the suction mouth 6 by a partition 11, 11a in the suction mouth space 8. Above the partition walls 11, 11a, throughflow openings 12, 12a are provided which each establish a flow connection between the suction mouth 6 and the suction channel 9. In the example shown, the suction channel 9 is divided into two partial suction channels 9a, 9b. This ensures that collected dirt particles 31 are transported away from both dust-collecting zones 10, 10a. In the Figure 9 The floor nozzle 1 shown schematically is in a forward movement in the processing direction 5, ie it is moved from right to left by the user, so that the sliding sole 4 slides over the carpet fibers 32 of the floor surface 30. Here, the carpet fibers are bent up from the front suction mouth edge 7 of the suction mouth 6 and adhering dirt particles 31 are thrown out of the carpet fibers 32. The thrown out dirt particles 31 thereby fly according to the trajectories shown in dash-dotted lines against the impact contour 15 arranged in the suction mouth space 8. As can be seen, the design of the impact contour 15 favors the dust collection in the rear dust collection zone 10a when the floor nozzle 1 moves forward Detached dirt particles 31 bounce off the baffle contour 15 in the direction of the rear dust-collecting zone 10a, since the bounce angle essentially corresponds to the bounce angle. The dirt particles that have bounced off are collected in the rear dust collection zone 10a before they are transported away via the suction air flow 33 in the suction channel 9.

Die Figur 10 zeigt die Bodendüse 1 gemäß Figur 9 in einer Rückwärtsbewegung in Bearbeitungsrichtung 5. Die durch den Benutzer eingeleitete Bewegung führt dazu, dass die hintere Saugmundkante 7a die von der Gleitsohle 4 überstrichenen Teppichfasern 32 aufbiegt und anhaftende Schmutzpartikel 31 aus den Teppichfasern 32 herausgeschleudert werden. Die herausgeschleuderten Schmutzpartikel 31 prallen gemäß der gestrichelt eingezeichneten Flugbahn an der Prallkontur 15 des Saugmundraumes 8 ab und landen in der Staubsammelzone 10, die sich entlang der vorderen Saugmundkante 7 des Saugmundes 6 erstreckt. Von hier aus werden die gesammelten Schmutzpartikel 31 über den Teilsaugkanal 9b zum Saugkanal 9 hin abtransportiert. Die Ausgestaltung der Bodendüse 1 mit zwei Staubsammelzonen 10, 10a, wobei sich eine Staubsammelzone 10 in Bearbeitungsrichtung 5 vor dem Saugmund 6 und eine Staubsammelzone 10a in Bearbeitungsrichtung 5 hinter dem Saugmund 6 befindet, hat den Vorteil, dass gelöste Schmutzpartikel 31 sowohl in einer Vorwärtsbewegung der Bodendüse 1 in Bearbeitungsrichtung 5 als auch in einer Rückwärtsbewegung der Bodendüse 1 in Bearbeitungsrichtung 5 in den Staubsammelzonen 10, 10a gesammelt werden. Hierdurch ist eine besonders effektive und gründliche Reinigung der Bodenfläche 30 möglich.The Figure 10 shows the floor nozzle 1 according to Figure 9 in a backward movement in the processing direction 5. The movement initiated by the user causes the rear suction mouth edge 7a to bend up the carpet fibers 32 swept over by the sliding sole 4 and to hurl adhering dirt particles 31 out of the carpet fibers 32. The thrown out dirt particles 31 bounce off the impact contour 15 of the suction mouth space 8 according to the trajectory shown in dashed lines and land in the dust collection zone 10, which extends along the front suction mouth edge 7 of the suction mouth 6. From here, the collected dirt particles 31 are transported away to the suction channel 9 via the partial suction channel 9b. The design of the floor nozzle 1 with two dust collection zones 10, 10a, with a dust collection zone 10 in the processing direction 5 in front of the suction mouth 6 and a dust collection zone 10a in the processing direction 5 behind the suction mouth 6, has the advantage that loosened Dirt particles 31 are collected in the dust collecting zones 10, 10a both in a forward movement of the floor nozzle 1 in the machining direction 5 and in a backward movement of the floor nozzle 1 in the machining direction 5. This enables particularly effective and thorough cleaning of the floor surface 30.

Natürlich ist die Erfindung nicht auf die dargestellten Ausführungsbeispiele beschränkt. Weitere Ausgestaltungen sind möglich, ohne den Grundgedanken zu verlassen. So kann die Bodendüse 1 auch als Teil eines selbstfahrenden Staubsaugers ausgebildet sein.Of course, the invention is not restricted to the exemplary embodiments shown. Further refinements are possible without departing from the basic idea. So the floor nozzle 1 can also be designed as part of a self-propelled vacuum cleaner.

Bezugszeichenliste:List of reference symbols:

11
BodendüseFloor nozzle
22
Staubsaugervacuum cleaner
33
Gehäusecasing
44th
Unterseite (Gleitsohle)Underside (sliding sole)
55
BearbeitungsrichtungMachining direction
66th
SaugmundSuction mouth
77th
7a Saugmundkante7a suction mouth edge
88th
SaugmundraumSuction mouth space
99
Saugkanal, 9a, 9b TeilsaugkanäleSuction channel, 9a, 9b partial suction channels
10 10a10 10a
StaubsammelzoneDust collection zone
11 11a11 11a
Trennwandpartition wall
12 12a12 12a
DurchströmöffnungFlow opening
13 13a13 13a
SammelrinneCollecting channel
14 14a14 14a
NebenluftöffnungSecondary air opening
1515th
PrallkonturImpact contour
1616
SaugschlauchSuction hose
1717th
HandschaltungManual transmission
1818th
TrittschaltungStep shift
1919th
AnschlussstutzenConnection piece
2020th
AbstützelementeSupport elements
21 21a21 21a
Staubsaugergehäuse, StaubsaugergehäuseteileVacuum cleaner housings, vacuum cleaner housing parts
2222nd
AnschlusskabelConnection cable
2323
AbluftgitterExhaust grille
2424
AbscheidesystemSeparation system
2525th
StaubraumDust room
2626th
SaugrohrSuction pipe
2727
HandgriffHandle
3030th
BodenflächeFloor area
3131
SchmutzpartikelDirt particles
3232
TeppichfasernCarpet fibers
3333
SaugluftstromSuction air flow
3434
TeilluftstromPartial airflow

Claims (12)

  1. Floor nozzle (1) for a vacuum cleaner (2) for cleaning and care of floor surfaces (30), comprising a housing (3) having an underside (4) which faces the floor surface (30) when in the treatment position and on which a suction mouth (6) extending substantially transversely to the treatment direction (5) is arranged, wherein the suction mouth (6) is delimited by at least one associated suction mouth edge (7, 7a), wherein the suction mouth (6) forms an opening to a suction mouth space (8) that is arranged above the suction mouth (6) when in the treatment position, wherein the suction mouth space (8) is connected to a suction channel (9), wherein a dust collection zone (10, 10a) is arranged in the suction mouth space (8) upstream of the suction mouth (6) in the treatment direction (5) and downstream of the suction mouth (6) in the treatment direction (5).
  2. Floor nozzle (1) according to claim 1, characterised in that the dust collection zone (10, 10a) extends along the suction mouth (6).
  3. Floor nozzle (1) according to either claim 1 or claim 2, characterised in that the dust collection zone (10, 10a) is separated from the suction mouth (6) by a partition wall (11, 11a) in the suction mouth space (8).
  4. Floor nozzle (1) according to claim 3, characterised in that the partition wall (11, 11a) has a through-flow opening (12, 12a), the through-flow opening (12, 12a) fluidically connecting the suction mouth (6) to the suction channel (9).
  5. Floor nozzle (1) according to claim 4, characterised in that, in the treatment position, a collection groove (13, 13a) that forms the dust collection zone (10, 10a) is arranged below the through-flow opening (12, 12a).
  6. Floor nozzle (1) according to claim 5, characterised in that the collection groove (13, 13a) forms the suction mouth edge (7, 7a).
  7. Floor nozzle (1) according to any of claims 1 to 6, characterised in that the dust collection zone (10, 10a) is arranged between the suction mouth (6) and the suction channel (9).
  8. Floor nozzle (1) according to any of claims 1 to 7, characterised in that the dust collection zone (10, 10a) is associated with at least one secondary air opening (14, 14a) which is arranged such that a partial air flow, which is independent of the suction mouth (7), from the secondary air opening (14, 14a) through the dust collection zone (10, 10a) toward the suction channel (9) can be generated.
  9. Floor nozzle (1) according to any of claims 1 to 8, characterised in that the at least one secondary air opening (14, 14a) is arranged laterally in the housing (3) transversely to the treatment direction (5).
  10. Floor nozzle (1) according to any of claims 1 to 9, characterised in that the suction mouth space (8) has an impact contour (15) which promotes the collection of dust in the dust collection zone (10, 10a).
  11. Floor nozzle (1) according to claim 10, characterised in that the impact contour (15) is designed such that dirt particles (31) loosened from the floor surface (30) by the suction mouth edge (7, 7a) deflect off the impact contour (15) in the direction of the dust collection zone (10, 10a).
  12. Vacuum cleaner (2) for cleaning and care of floor surfaces (30), comprising a fan for generating a vacuum for picking up dirt by means of an air flow, and a separation system (24) for cleaning dirt from the taken-in air, characterised by a floor nozzle (1) according to any of the preceding claims.
EP18175780.8A 2017-06-27 2018-06-04 Vacuum cleaner and floor nozzle for vacuum cleaner Active EP3420872B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017114163.4A DE102017114163A1 (en) 2017-06-27 2017-06-27 Floor nozzle for vacuum cleaners and vacuum cleaners

Publications (2)

Publication Number Publication Date
EP3420872A1 EP3420872A1 (en) 2019-01-02
EP3420872B1 true EP3420872B1 (en) 2021-07-07

Family

ID=62528344

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18175780.8A Active EP3420872B1 (en) 2017-06-27 2018-06-04 Vacuum cleaner and floor nozzle for vacuum cleaner

Country Status (2)

Country Link
EP (1) EP3420872B1 (en)
DE (1) DE102017114163A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3795047B1 (en) * 2019-09-23 2022-01-05 Wessel-Werk GmbH Universal vacuum cleaner nozzle

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3801757A1 (en) 1988-01-22 1989-07-27 Wessel Werk Gmbh Vacuum cleaner nozzle
JP2504169Y2 (en) * 1990-05-07 1996-07-10 株式会社コロナ Vacuum cleaner
DE19914574C1 (en) * 1999-03-31 2000-11-23 Duepro Ag Romanshorn Electric vacuum cleaner floor cleaning tool has dirt collection container for relatively large dirt particles immediately behind brush chamber for rotating brush roller
US7329294B2 (en) * 2003-10-23 2008-02-12 Polar Light Limited Dirt container for a surface cleaning apparatus and method of use
US20060195991A1 (en) * 2004-05-11 2006-09-07 Baumhakel Alexander J Transport cleaning device
GB2530932A (en) * 2013-11-25 2016-04-06 Hoover Ltd Vacuum cleaner head
DE102014105756A1 (en) * 2014-04-24 2015-10-29 Miele & Cie. Kg Floor care device with an exhaust air return
DE102014208080A1 (en) 2014-04-29 2015-10-29 BSH Hausgeräte GmbH vacuum cleaner nozzle

Also Published As

Publication number Publication date
EP3420872A1 (en) 2019-01-02
DE102017114163A1 (en) 2018-12-27

Similar Documents

Publication Publication Date Title
DE60201019T2 (en) VACUUM CLEANER
EP3310233B1 (en) Suction nozzle for a vacuum cleaner
DE10153371A1 (en) Suction nozzle of a vacuum cleaner
DE102012104706B4 (en) Suction nozzle with two suction mouths
EP3420872B1 (en) Vacuum cleaner and floor nozzle for vacuum cleaner
DE102008030707B4 (en) Dust collection chamber and method for operating a dust collection chamber
EP2866632B1 (en) Combination made up of a small vacuum cleaner and of an upright vacuum cleaner frame, and small vacuum cleaner and upright vacuum cleaner frame
DE102014103686A1 (en) Floor care device with a front and a rear suction mouth
EP3417750A1 (en) Vacuum cleaner and floor nozzle for vacuum cleaner
DE102013104255A1 (en) Method for operating a dust collecting chamber and dust collecting chamber for an electrically operated vacuum cleaner
DE102015105060A1 (en) Cleaning device, in particular vacuum cleaner or attachment of a vacuum cleaner
DE102017114181A1 (en) Floor nozzle for vacuum cleaners and vacuum cleaners
EP3345523B1 (en) Vacuum cleaner and floor nozzle for vacuum cleaner
EP3586709B1 (en) Vacuum cleaner and floor nozzle for vacuum cleaner
EP2534991B1 (en) Floor nozzle for a vacuum cleaner and vacuum cleaner with such a floor nozzle
EP3298944B1 (en) Floor nozzle for vacuum cleaner and vacuum cleaner
EP3446610B1 (en) Vacuum cleaner and method for operating same
DE102019109093A1 (en) Handle for vacuum cleaner and vacuum cleaner
DE102018118776A1 (en) vacuum cleaner
DE102017100253A1 (en) Floor nozzle for vacuum cleaners and vacuum cleaners
DE102018131547A1 (en) Suction nozzle for vacuum cleaners and vacuum cleaners and method for producing a suction nozzle
EP2534990A2 (en) Floor nozzle for a vacuum cleaner and vacuum cleaner with such a floor nozzle
DE102017114064A1 (en) Floor nozzle for vacuum cleaners and vacuum cleaners
DE102015100873A1 (en) suction nozzle
DE102020127421A1 (en) Vacuum cleaner and method of operating a vacuum cleaner

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

17P Request for examination filed

Effective date: 20181210

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20210331

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

REG Reference to a national code

Ref country code: DE

Ref legal event code: R084

Ref document number: 502018005980

Country of ref document: DE

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1407733

Country of ref document: AT

Kind code of ref document: T

Effective date: 20210715

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502018005980

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: GB

Ref legal event code: 746

Effective date: 20210721

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20210707

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211007

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211108

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211007

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211008

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502018005980

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

26N No opposition filed

Effective date: 20220408

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20220630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220604

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220630

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220604

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220630

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230528

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20230622

Year of fee payment: 6

Ref country code: DE

Payment date: 20230630

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20230620

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20180604