EP2170148A1 - Dispositif d'absorption de la saleté pour un nettoyeur de planchers ainsi que nettoyeur de planchers avec un tel dispositif d'absorption de la saleté - Google Patents

Dispositif d'absorption de la saleté pour un nettoyeur de planchers ainsi que nettoyeur de planchers avec un tel dispositif d'absorption de la saleté

Info

Publication number
EP2170148A1
EP2170148A1 EP08773558A EP08773558A EP2170148A1 EP 2170148 A1 EP2170148 A1 EP 2170148A1 EP 08773558 A EP08773558 A EP 08773558A EP 08773558 A EP08773558 A EP 08773558A EP 2170148 A1 EP2170148 A1 EP 2170148A1
Authority
EP
European Patent Office
Prior art keywords
suction
channel
carrier
sectional area
suction channel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08773558A
Other languages
German (de)
English (en)
Inventor
Michael Schütz
Florian Kolbeck
Ruwantha De Silva
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.)
Alfred Kaercher SE and Co KG
Original Assignee
Alfred Kaercher SE and Co 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 Alfred Kaercher SE and Co KG filed Critical Alfred Kaercher SE and Co KG
Publication of EP2170148A1 publication Critical patent/EP2170148A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/29—Floor-scrubbing machines characterised by means for taking-up dirty liquid
    • A47L11/30—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction
    • A47L11/302—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction having rotary tools
    • A47L11/305—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction having rotary tools the tools being disc brushes
    • 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
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4036—Parts or details of the surface treating tools
    • A47L11/4044—Vacuuming or pick-up tools; Squeegees

Definitions

  • the invention relates to a dirt collecting device for a floor cleaning machine, for receiving a liquid from a floor surface to be cleaned, with a support and at least one wiper member for stripping the bottom surface, the support and the at least one wiper member forming boundaries of a suction opening into a suction mouth, whose passable by a suction free cross-sectional area is reduced in a direction away from the suction mouth direction at least in a channel section.
  • the invention relates to a floor cleaning machine comprising at least one dirt collecting device.
  • Floor cleaning machines typically comprise a cleaning device with cleaning elements, such as rotating brush rollers or disc brushes, with which dirt can be detached from the floor surface to be cleaned.
  • the separation of dirt is favored by applying the soil surface with a cleaning liquid, such as water.
  • the dirty liquid ie the mixture of the cleaning liquid and the detached dirt, the so-called dirty liquor
  • the floor cleaning machine has a suction unit which is connected to the dirt collecting device is connected so that a suction flow can be generated within the suction channel, under the effect of which the dirty liquid from the suction channel via the suction port and an adjoining suction line can be transferred to a dirty liquid container of the floor cleaning machine.
  • the at least one wiper member and the carrier form boundaries of the suction channel.
  • at least one boundary wall can be used to limit the suction channel, which is preferably flexible and does not necessarily have to contact the bottom surface.
  • Object of the present invention is to provide a generic dirt collecting device and a generic floor cleaning machine, which are cheaper to produce.
  • the free cross-sectional area of the suction channel is reduced at least along a channel section.
  • the carrier is not produced in the same working step as the carrier.
  • This makes it possible to optimize the methods required for producing the carrier and the at least one channel constriction member separately from one another, directed to the purpose of the carrier or of the at least one channel constricting member. It may be provided, for example, to achieve low production costs of the dirt receiving device, that the carrier and the at least one channel constriction member are made by means of different manufacturing processes and / or of different materials.
  • the choice of the manufacturing process and the material for the carrier and the at least one channel constriction member for example, taking into account the cost of producing the entire dirt-collecting device and the carrier or of the at least one channel constriction member to be performed each function to be performed.
  • the free cross-sectional area of the suction channel is reduced by means of the at least one channel constriction member along the entire length of the suction channel. But it is also possible that the free cross-sectional area of the suction channel is reduced only in sections by means of the at least one channel constriction member.
  • the dirt-collecting device may have a plurality of channel constriction members, which reduce the free cross-sectional area of the suction channel in sections.
  • the free cross-sectional area of the suction channel can be reduced solely by means of the at least one channel constriction member. This makes it possible to give the wearer a simple shape, in particular a uniform shape. The change in the free cross-sectional area of the suction channel along the suction channel is then achieved solely by means of the at least one channel constriction member.
  • the carrier comprises a section delimiting the suction channel, which has a constant cross section at least outside the suction mouth along the suction channel.
  • This allows for a simple embodiment of the suction channel limiting carrier portion and favors the other cost-effective production of the carrier as a whole.
  • this embodiment allows to reduce the free cross-sectional area of the suction channel alone by means of the at least one channel constriction member.
  • the carrier has a constant cross section at least outside the suction mouth along the suction channel. As a result, the carrier is cheaper to produce.
  • a carrier may be formed, for example in the form of a profile strip.
  • a particularly cost-effective production of the carrier can be achieved if the carrier is produced by a forming process, in particular by an extrusion process.
  • the carrier is made of metal. This allows, for example, a processing and shaping by means of forming, in particular extrusion.
  • the carrier may be made of inexpensive and easy-to-process aluminum or an aluminum alloy.
  • a support made of metal offers the advantage that it gives the dirt-receiving device a sufficient weight, so that the at least one wiper member for stripping the floor surface to be cleaned can lie flush against the bottom surface. A separate application of force to the dirt receiving device, in order to allow a flush abutment of the at least one Abstreifgliedes on the ground, can be omitted.
  • the at least one channel constriction member is formed as a plastic molded part. This makes it possible to produce the at least one channel constrictor cost. It can be produced, for example, by means of an injection molding process, which allows the at least one channel constriction member to be provided cost-effectively with curved and curved To provide curved surfaces, as they may be provided to guide the suction flow through the suction channel.
  • a simple and compact design of the dirt collecting device according to the invention is advantageously achieved in that the at least one channel constriction member is held on the carrier.
  • the carrier defines a guide for the at least one channel constrictor.
  • the guide may be formed, for example, as a groove running along the carrier, in which engages the at least one channel constriction member by means of a strip-shaped projection. It can also be provided to design the guide as a rib or projection, which is encompassed by the channel constrictor.
  • the guide is designed as a dovetail guide. This makes it possible to introduce the at least one channel constriction member for mounting in a simple manner in the suction channel and to hold there.
  • the at least one channel constriction member is detachably connectable to the carrier.
  • a dirt collecting device formed in this way for example, a plurality of channel constriction members can be used, which are designed differently depending on the nature of the floor surface to be cleaned.
  • Such a dirt-collecting device has a high versatility. It has proved to be favorable if the free cross-sectional area of the suction channel, which can be passed by the suction flow, can be continuously reduced at least in sections by means of the at least one channel constriction member along the suction channel. It has been shown that with a continuous reduction of the free cross-sectional area of the suction channel, the suction flow experiences lower flow losses. In addition, a uniformly high flow velocity of the suction flow and thus a uniform transportability (dirt absorption capacity) of the suction flow can be achieved. In this way, an improved extraction result can be achieved.
  • the at least one channel constrictor delimits at least partially the free cross-sectional area of the suction channel that can be passed by the suction flow by means of a surface section whose distance from the section of the carrier delimiting the suction channel and / or of the at least one stripping element increases in a direction pointing away from the suction mouth.
  • the guidance of the suction flow is particularly resistant to resistance, if the distance of the surface portion of the suction channel limiting portion of the carrier and / or the at least one Abstreifgliedes increases continuously.
  • the surface section of the at least one channel constriction member that at least partially delimits the free cross-sectional area of the suction channel is preferably formed rising from the rear side of the device to its front side, relative to the main movement direction of the floor-cleaning machine, by the floor surface to be cleaned. This means that the surface portion near the front of the device has a greater distance from the bottom surface than near the rear of the device. If the dirt-collecting device has a suction-limiting limiting stripper member on its front side, this gives the possibility that the wiper member for effective stripping of the bottom surface in the direction of the back of the dirt-holding device can bend.
  • the inclination of the free cross-sectional area of the suction channel at least partially limiting surface portion of the at least one channel constrictor relative to the suction channel limiting portion of the carrier and / or to the at least one Abstreifglied changes in a direction away from the suction mouth direction. It has been found in practice that the suction flow can be performed very well in this way.
  • the at least one channel constricting member is the one
  • the free cross-sectional area of the suction channel, which is passable by the suction flow, is at least partially limited by means of a surface section which is convexly curved along the suction channel in the direction of the floor surface to be cleaned.
  • An improved guidance of the suction flow can additionally be achieved in that the at least one channel constricting member has a smooth surface on its side, which delimits the free cross-sectional area of the suction channel that can be passed by the suction flow.
  • the invention also relates to a floor cleaning machine comprising at least one dirt collecting device.
  • the object mentioned in the introduction is achieved according to the invention in that the at least one dirt holding device is designed as described above.
  • the floor cleaning machine according to the invention thus has the advantages already mentioned in connection with the above explanations of the dirt collecting device according to the invention.
  • FIG. 1 is a side view of a floor cleaning machine according to the invention with a dirt receiving device according to the invention
  • FIG. 2 shows a perspective view of the dirt-collecting device from FIG. 1 without stripping members
  • FIG. 3 shows an enlarged perspective view of a channel narrowing element of the dirt-collecting device from FIG. 1;
  • FIG. 4 is a longitudinal sectional view of the dirt-collecting device from FIG. 1;
  • Figure 5 is a sectional view taken along line 5-5 in Figure 4;
  • Figure 6 is a sectional view taken along line 6-6 in Figure 4;
  • Figure 7 is a sectional view taken along the line 7-7 in Figure 4.
  • FIG. 8 shows a sectional view along the line 8-8 in Figure 4.
  • FIG. 1 A preferred embodiment of a floor cleaning machine according to the invention is shown schematically in FIG. 1 and assigned there the reference numeral 10.
  • the floor cleaning machine 10 carries on its underside 12 a first cleaning device 14, which has a disc brush 16, and a second cleaning device 17, which has a floor cleaning head 18 with two known and not shown in the drawing brush rollers.
  • the plate brush 16 and the floor cleaning head 18 can be deposited in a manner known per se and therefore not explained on a floor surface 20 to be cleaned. be lowered.
  • cleaning liquid preferably water, can be applied to the bottom surface 20 to rid it of dirt.
  • suction bar 26 To pick up the dirty liquid, i. the mixture of the dirt and the cleaning liquid, the floor cleaning machine 10 on its rear side 22 on a preferred embodiment of a below-described dirt receiving device 24 according to the invention, which is referred to in the following simplifying as suction bar 26.
  • the floor cleaning machine 10 comprises a known per se and not shown in the drawing suction unit for generating negative pressure, which is connected via a suction line 28 to the suction bar 26.
  • fastening device 30 of the suction bar 26 is movably mounted on the floor cleaning machine 10 so that it can be raised from the bottom surface 20 and lowered onto it.
  • a pair of rollers 32 and 34 disposed on the suction bar 26 may provide a defined position of the suction bar 26 relative thereto when the suction bar 26 is placed on the floor surface 20, as required, for example, on uneven floors. If the use of the rollers 32, 34 is not desired, for example on smooth, flat floors, the rollers 32, 34 can be folded upwards.
  • the suction bar 26 has an elongate rectilinear carrier 36th on. This is oriented transversely to a main movement direction 37 of the floor cleaning machine 10.
  • the carrier is not formed in a straight line but curved.
  • the carrier 36 has a front side 38, which faces the floor cleaning machine 10, and a rear side 40, which faces away from the floor cleaning machine 10.
  • the carrier 36 comprises slot-shaped receivers 42 and 44 extending in the longitudinal direction of the carrier 36 for a front stripping member 46 and a rear stripping member 48, respectively.
  • the stripping members 46 and 48 are not shown. and in FIG. 4 only the rear wiper member 48 can be seen.
  • the wiper members 46 and 48 and a lower wall portion 50 of the carrier 36 define a suction channel 52 extending along the carrier 36, which opens into a suction mouth 56 in the center 54 of the carrier 36.
  • a preferably flexible boundary wall which, during operation of the floor cleaning machine 10, defines a gap to the floor, ie does not contact the floor.
  • the boundary wall could also be held on the carrier 36.
  • the suction mouth 56 is formed as an opening of a hollow body configured as insert 57, which is arranged in an opening 58 in the center 54 of the carrier 36 through this.
  • the insert 57 has a pipe socket 62, to which the already mentioned suction line 28 is connected. In this way, there is a flow connection between the suction channel 52 and the suction unit of the floor cleaning machine 10 through the suction mouth 56, the insert part 57 and the suction line 28.
  • the dirty liquid can be sucked from the bottom surface 20 through the suction channel 52 from the suction unit.
  • the dirty liquid is stripped from the bottom surface 20 to be able to effectively suck it off, so that the bottom surface 20 is cleaned after the cleaning process and substantially dry.
  • the front wiper 46 has some not shown in the drawing, known per se and therefore unspecified vertical slots, between which the liquid can pass into the suction channel 52.
  • the length of the stripping members 46 and 48 is dimensioned such that they can bend when setting up the suction beam 26 on the bottom surface 20 against the direction of travel of the floor cleaning machine 10. This is not shown in the drawing.
  • the bottom surface 20 can be stripped off in this way particularly effective.
  • the carrier 36 is made of metal, in particular of aluminum, by means of a forming process, in particular an extrusion process. This allows to keep the manufacturing cost of the carrier 36 low. Furthermore, it has a favorable effect on the production costs of the carrier 36 that its cross-section along the suction channel 52 outside the suction mouth 56 is constant, because this facilitates the production of the carrier 36 in the form of a profile part.
  • first channel constriction member 70 and a second channel constriction member 72 which are arranged in the suction channel 52 and held on the carrier 36.
  • the channel constriction members 70 and 72 are symmetrical to one another and have the same effect.
  • the carrier 36 has a guide 74 formed on the lower wall portion of the carrier 36 in the form of a dovetail groove 76 extending along the carrier 36.
  • the channel constriction members 70 and 72 each have a corresponding dovetail-shaped groove 76 formed dovetail projection 78 ( Figure 3, the example of the first channel constriction member 70). This can be inserted into the groove 76 for holding the channel constriction members 70 and 72 on the carrier 36.
  • the channel constriction members 70 and 72 are inexpensive from a plastic material, in particular by an injection molding process, produced. As described below, they are designed such that the free cross-sectional area 80 (FIGS. 5 to 8) which can be passed by a suction flow passing through the suction channel 52 decreases in each case along a channel section in a direction away from the suction mouth 56. This gives the possibility ability to compensate for a speed reduction of the suction flow, which would result in the absence of the channel constriction members 70 and 72 in the direction of the outer end portions 66 and 68 of the suction beam 26.
  • the channel constriction members 70 and 72 increase the speed of the suction flow. This has the consequence that the liquid can be effectively sucked over the entire length of the suction bar 26.
  • the channel constriction members 70 and 72 each have a free cross-sectional area 80 bounding surface portion 82 whose distance from the lower wall portion 50 of the support 36th in the path leading away from the suction mouth 56
  • the surface portion 82 is inclined relative to the suction channel 52 delimiting portions of the Abstreifglieder 46 and 48 and relative to the lower wall portion 50 of the carrier 36, wherein the inclination in the suction from the mouth 56 pioneering direction changes.
  • the inclination of the surface portion 82 is such that the surface portion 82 is formed rising from the back surface 40 of the carrier 36 to the front side 38 thereof and from the bottom surface 20 toward the bottom wall portion 50 of the carrier 36.
  • the surface portion 82 of the channel constricting member 70 is convexly curved toward the bottom surface 20 due to the above-described shaping. As mentioned, a guidance of the suction flow can be ensured with particularly low flow losses through the free cross-sectional area 80 of the suction channel 50. This guidance is favored by the smooth surface of the surface portion 82.
  • the production of the carrier 36 separate from the channel constriction members 70 and 72 makes it possible to keep the manufacturing costs for the suction bar 26 and consequently also for the floor cleaning machine 10 low.
  • the manufacturing processes for the carrier 36 and the channel constriction members 70 and 72 can be optimized separately from a financial point of view, but also from a functional point of view, with respect to the purposes of the carrier 36 and the channel constriction members 70 and 72.
  • channel constriction members 70 and 72 with the support 36 are tool-free connectable. It can be provided that the channel constriction members 70 and 72 are releasably detachable from the carrier 36 and in particular without tools. This gives, for example, the possibility that different channel constriction elements are used in the suction bar 26, depending on the floor area 20 to be cleaned.

Landscapes

  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Cleaning In General (AREA)

Abstract

L'invention concerne un dispositif d'absorption de la saleté (24) pour un nettoyeur de planchers qui permet d'absorber un liquide depuis une surface de plancher à nettoyer. Il est composé d'un support (36) et d'au moins un élément racleur (46, 48) pour racler la surface de plancher. Le support et l'au moins un élément racleur bordent la conduite d'aspiration débouchant sur une bouche d'aspiration dont la superficie de section traversable par un débit aspiré se réduit vers une direction indiquée par la bouche d'aspiration au moins dans une section de conduite. Afin de fabriquer un tel dispositif d'absorption de la saleté de manière plus économique, il est proposé selon l'invention qu'au moins un élément d'étranglement de conduite (70, 72) soit disposé dans la conduite d'aspiration (52) qui est fabriqué indépendamment du support (36). De plus, l'invention concerne un nettoyeur de planchers comportant un tel dispositif d'absorption de la saleté.
EP08773558A 2007-07-18 2008-06-20 Dispositif d'absorption de la saleté pour un nettoyeur de planchers ainsi que nettoyeur de planchers avec un tel dispositif d'absorption de la saleté Withdrawn EP2170148A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007034702A DE102007034702A1 (de) 2007-07-18 2007-07-18 Schmutzaufnahmevorrichtung für eine Bodenreinigungsmaschine sowie Bodenreinigungsmaschine mit einer derartigen Schmutzaufnahmevorrichtung
PCT/EP2008/005008 WO2009010150A1 (fr) 2007-07-18 2008-06-20 Dispositif d'absorption de la saleté pour un nettoyeur de planchers ainsi que nettoyeur de planchers avec un tel dispositif d'absorption de la saleté

Publications (1)

Publication Number Publication Date
EP2170148A1 true EP2170148A1 (fr) 2010-04-07

Family

ID=39749176

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08773558A Withdrawn EP2170148A1 (fr) 2007-07-18 2008-06-20 Dispositif d'absorption de la saleté pour un nettoyeur de planchers ainsi que nettoyeur de planchers avec un tel dispositif d'absorption de la saleté

Country Status (6)

Country Link
US (1) US8302254B2 (fr)
EP (1) EP2170148A1 (fr)
CN (1) CN101742956B (fr)
DE (1) DE102007034702A1 (fr)
RU (1) RU2444975C2 (fr)
WO (1) WO2009010150A1 (fr)

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Publication number Priority date Publication date Assignee Title
DE102010038421A1 (de) * 2010-07-26 2012-01-26 Alfred Kärcher Gmbh & Co. Kg Reinigungsvorrichtung
DE102010038420A1 (de) 2010-07-26 2012-01-26 Alfred Kärcher Gmbh & Co. Kg Reinigungungsvorrichtung
ITPN20120029A1 (it) * 2012-06-05 2013-12-06 Nilfisk Advance As Macchina lava-asciuga pavimenti con bandella del tergitore a lunga durata d¿esercizio
WO2014135775A1 (fr) * 2013-03-04 2014-09-12 Ecodrop Dispositif d'aspirateur conçu apte à l'aspiration d'air et de liquide sur une surface plane, et lame de raclage pour un tel dispositif
DE202014010133U1 (de) * 2014-12-29 2016-04-01 Wetrok Ag Vorrichtung für eine Bodenreinigungsmaschine
WO2018080742A1 (fr) * 2016-10-25 2018-05-03 Shop Vac Corporation Accessoire de type raclette à aspiration
DE102017110774A1 (de) * 2017-05-17 2018-11-22 Hako Gmbh Saugfuß für eine Bodenreinigungsmaschine
CN107165111B (zh) * 2017-06-19 2023-03-24 中国重汽集团柳州运力专用汽车有限公司 洗扫车的吸嘴装置
CN114652208A (zh) * 2020-12-23 2022-06-24 宁波方太厨具有限公司 一种清洁机

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US3939518A (en) * 1973-11-30 1976-02-24 Clarke-Gravely Corporation Floor treatment machine
US5377382A (en) * 1993-05-13 1995-01-03 Windsor Industries, Inc. Floor cleaning machine including squeegee assembly
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DE19539217C1 (de) * 1995-10-23 1997-02-06 Gansow Maschbau Gmbh Co Kg Saugfuß für eine fahrbare Fußbodenreinigungsmaschine
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WO1998027856A1 (fr) * 1996-12-20 1998-07-02 Sjoegreen Joergen Dispositif de lavage du sol a double action
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US7254867B2 (en) * 2003-03-07 2007-08-14 Nilfisk-Advance, Inc. Squeegee assembly
RU48259U1 (ru) * 2004-09-16 2005-10-10 Чорный Орест Юрьевич Сборный придверный коврик

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Also Published As

Publication number Publication date
CN101742956A (zh) 2010-06-16
US20100180397A1 (en) 2010-07-22
DE102007034702A1 (de) 2009-01-22
US8302254B2 (en) 2012-11-06
RU2444975C2 (ru) 2012-03-20
CN101742956B (zh) 2012-10-03
WO2009010150A1 (fr) 2009-01-22
RU2010105305A (ru) 2011-08-27

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