EP1167631B1 - Mobile floor cleaning apparatus - Google Patents
Mobile floor cleaning apparatus Download PDFInfo
- Publication number
- EP1167631B1 EP1167631B1 EP01113629A EP01113629A EP1167631B1 EP 1167631 B1 EP1167631 B1 EP 1167631B1 EP 01113629 A EP01113629 A EP 01113629A EP 01113629 A EP01113629 A EP 01113629A EP 1167631 B1 EP1167631 B1 EP 1167631B1
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- EP
- European Patent Office
- Prior art keywords
- wall
- dirt
- suction
- angle
- side walls
- 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.)
- Expired - Lifetime
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
- E01H1/08—Pneumatically dislodging or taking-up undesirable matter or small objects; Drying by heat only or by streams of gas; Cleaning by projecting abrasive particles
- E01H1/0863—Apparatus loosening or removing the dirt by blowing and subsequently dislodging it at least partially by suction ; Combined suction and blowing nozzles
- E01H1/0872—Apparatus loosening or removing the dirt by blowing and subsequently dislodging it at least partially by suction ; Combined suction and blowing nozzles with mechanical loosening or feeding instruments for the dirt to be removed pneumatically, e.g. brushes, scrapers
Definitions
- the invention relates to a mobile floor cleaning device with a dirt suction device, which receives with its outer end dirt from the floor to be cleaned, with a dirt collecting container with which the inner end of the Schmutzaufsaug noise is in communication, and with a filter assembly through which the dirt in the dirt collecting air got out of this outlet, wherein the Schmutzaufsaug resonance has a suction line and a return line, is returned by the air from the dirt collector adjacent to and in the sweeping direction behind the outer end of the suction line to the floor to be cleaned, and wherein the outer ends of the suction line and return line lead into a suction mouth, the side walls diverge in the sweeping forward and at the rear end form a curved end wall, from the lower edge of which a bottom wall extends forward, the upper surface under a Wi nkel falls forward and ends in an arcuate leading edge.
- a known floor cleaning device CH 613 735 A
- two nozzle rings are present, which form an inner and an outer air jet.
- the inner air jet is used to remove the dirt from the soil to be cleaned, while the outer air jet is to prevent the Austriit of fine dust into the environment.
- a floor cleaning device of the type mentioned is inventively designed such that the side walls of the suction mouth with an opening angle of 30 ° to 50 °, in particular 34 ° to 46 °, diverge that the upper surface of the bottom wall at an angle of 5 ° to 15 °, in particular 7 ° to 13 °, falls forward, that at a distance in front of the front edge of the bottom wall an arcuate curved , is provided forwardly downwardly inclined, passing into the side walls intermediate wall which separates the outer ends of the suction line and return line and whose lower edge between them and the front edge of the bottom wall forms a remindlessnesssspalt forming above the front edge of the bottom wall that the curved rear wall portion of the intermediate wall is inclined to the horizontal at an angle of 60 ° to 80 °, in particular 66 ° to 73 °, and the inclination changes forward so continuously that the side wall portions of the intermediate wall are steeper inclined, and that the bottom wall in the region of the side wall inwards projecting portions
- the curved end wall in the planes of the bisector of the opening angle of the side walls of the bottom wall upwards at an angle of 45 ° to 70 °, in particular 48 ° to 61 °, inclined to the horizontal to the rear.
- the return line and the suction line which is usually parallel to this can have the same inclination in the area of the suction mouth.
- the lower edges of the side wall portions of the intermediate wall diverge in the sweeping forward with an opening angle of 55 ° to 75 °, in particular 59 ° to 68 °, and these side wall portions can merge at the front end of the inwardly projecting portions in the side walls of the suction mouth.
- the forward ends of the inwardly projecting portions may be spaced from the forward end of the respective associated side wall which is 20% to 40% of the distance of that forward end from the center of the end wall.
- FIG. 1 schematically shown mobile cleaning device is a articulated vehicle, the front, supported on front wheels (only the front wheel 4) supported platform 1 via a Doppelpendelgelenkan extract 10 with a rear platform is coupled, which rests on rear wheels 6, 7 and on which the largest part of the cleaning system 11 is arranged.
- a suitable Doppelpendelgelenkan extract is in the DE-A-100 29 691 described.
- the cleaning system 11 includes a dirt collecting container, not shown, which is closed by a filter assembly 13 to the environment and having a suction fan 12 which generates a negative pressure during operation and so on an obliquely from the upper part of the rear platform 2 below the front platform extending suction pipe in the region of a yet to be described, provided at the lower end of the suction pipe 13 suction 20 generates a suction air to absorb dirt from the ground to be cleaned, which are partially transported by conventional side brush (only one side brush 9) in the opening portion of the suction mouth 20 can.
- Parallel to the suction pipe 13 extends at the rear in the sweeping direction of this a return pipe 14, which opens at its lower end in a manner also to be described in the suction port 20 and the upper end in the upper part of the dirt collecting container or in an area above this dirt collector extends.
- the suction mouth 20 has a support plate 21, on the front side of a Abweisbügel 23 and at the rear region support rollers 24 and 25 are attached, which hold the suction mouth in operation at a predetermined height above the floor to be cleaned.
- a support plate 21 At the front of the support plate 21 is an elastically deformable, divided by incision into individual flap areas protective wall 26 is present, which allows one hand to be received dirt particles to a certain size and on the other hand prevents too large parts get into the suction area.
- a molded part is fixed, the side walls 30 and 31, the forward at an angle ⁇ of 30 ° to 50 °, preferably 34 ° to 46 °, diverge, ie extend to the front, while they go back into a the rear end of the molding forming, curved end wall 32.
- This curved end wall is inclined at an angle ⁇ of about 45 ° to 70 °, preferably 48 ° to 61 ° to the horizontal, and to it a bottom wall 33 connects, which extends from the end wall 32 to the front and in the subsequent region of the Side walls 30, 31 inwardly projecting portions 36, 37 has.
- the front ends of the sections 36, 37 are spaced from the front end of the respective side wall 30, 31, which is about 20% to 40% of the distance of this front end from the center of the end wall 32.
- the upper surface 35 of the bottom wall drops from the back to the front at an angle ⁇ of 5 ° to 15 °, preferably 7 ° to 13 °, to the horizontal, and also the sections 36 and 37 have a corresponding inclination from the side walls 30, 31 inside and down.
- an intermediate wall is formed, the side wall portions 38 and 39 which pass approximately at the front end of the inwardly projecting portions 36 and 37 of the bottom wall in the side walls 30 and 31 and which form a curved rear partition wall portion 40.
- This is inclined to the horizontal at an angle ⁇ of 60 ° to 80 °, preferably 66 ° to 73 °.
- the top edges of the side wall portions 38 and 39 of the intermediate wall diverge forward at an angle ⁇ of 50 ° to 70 °, while their bottom edges diverge at an angle of about 55 ° to 75 °, preferably 59 ° to 68 °. Their steepness increases compared to that of the rear partition wall portion 40 continuously.
- FIG. 3 shows, opens the lower end of the suction tube 13 in the area immediately before the end portion 40 of the intermediate wall in the molding, including in the support plate 21 of the suction mouth 20 a in FIG. 4 recognizable opening is formed.
- the lower end of the return pipe 14 opens into the molding in the region between the end wall 32 and the end wall portion 40 of the intermediate wall, ie, the intermediate wall separates the outer ends of suction line 13 and return line 14.
- the inclination of the return line 14 to the horizontal and thus also the inclination of the suction line 13 is equal to the inclination of the end wall 32nd
- larger dirt particles are separated from the air flow in a conventional manner by an uncritical coarse filter and fall into the dirt collecting, while loaded with fine dust air flows through the filter assembly 13 'in the environment, wherein the particulate matter contained in it is retained in the filter assembly ,
- a portion of the conveyed through the suction pipe 13 air is passed through the return line 14 in the manner described in the area in front of the intermediate wall 38, 39, 40 and between the side walls 30, 31 on the floor to be cleaned and supports the detachment and stirring up of dirt - And dust particles, which are removed by means of the suction air flow through the suction pipe 13.
- the volume flow of the return air flow increases when the permeability of the filter assembly 13 'due to particulate matter decreases.
- the suction air can act with a volume flow of 0.77 m 3 / s at an air flow speed of 33 m / s and the return air with a volume flow of 0.17 m 3 / s and an air flow speed of 23 m / s are directed to the floor to be cleaned.
- a load of the filter of about 80% ie a reduction of its air permeability to 20%, leads to a reduction of the suction air to a flow rate of 0.33 m 3 / s at an air flow rate of 14 m / s, while the return air is on a Volume flow of 0.22 m 3 / s increased at an air flow rate of 31 m / s.
- the floor cleaning device in question can work effectively without cleaning the filter assembly. Only with further increase in the filter load, it makes sense to interrupt the cleaning operation and to make the filter assembly fully functional again by tapping the accumulated particulate matter, although it has been shown that even with further increased filter load still a useful operation is achieved.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Cleaning In General (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
- Electric Suction Cleaners (AREA)
Abstract
Description
Die Erfindung bezieht sich auf ein fahrbares Bodenreinigungsgerät mit einer Schmutzaufsaugeinrichtung, die mit ihrem äußeren Ende Schmutz vom zu reinigenden Boden aufnimmt, mit einem Schmutzsammelbehälter, mit dem das innere Ende der Schmutzaufsaugeinrichtung in Verbindung steht, und mit einer Filteranordnung, durch die über die Schmutzaufsaugeinrichtung in den Schmutzsammelbehälter gelangte Luft aus diesem austritt, wobei die Schmutzaufsaugeinrichtung eine Saugleitung und eine Rückführleitung aufweist, durch die Luft aus dem Schmutzsammelbehälter benachbart zu und in Kehrrichtung hinter dem äußeren Ende der Saugleitung auf den zu reinigenden Boden zurückgeführt wird, und wobei die äußeren Enden von Saugleitung und Rückführleitung in einen Saugmund münden, dessen Seitenwände in Kehrrichtung nach vorn divergieren und am hinteren Ende eine gekrümmte Abschlusswand bilden, von deren unterem Rand sich eine Bodenwand nach vorn erstreckt, deren obere Fläche unter einem Winkel nach vorn abfällt und in einer bogenförmigen Vorderkante endet.The invention relates to a mobile floor cleaning device with a dirt suction device, which receives with its outer end dirt from the floor to be cleaned, with a dirt collecting container with which the inner end of the Schmutzaufsaugeinrichtung is in communication, and with a filter assembly through which the dirt in the dirt collecting air got out of this outlet, wherein the Schmutzaufsaugeinrichtung has a suction line and a return line, is returned by the air from the dirt collector adjacent to and in the sweeping direction behind the outer end of the suction line to the floor to be cleaned, and wherein the outer ends of the suction line and return line lead into a suction mouth, the side walls diverge in the sweeping forward and at the rear end form a curved end wall, from the lower edge of which a bottom wall extends forward, the upper surface under a Wi nkel falls forward and ends in an arcuate leading edge.
Derartige Reinigungsgeräte sind bekannt, und durch die Rückführung von Luft auf den zu reinigenden Boden wird einerseits ein Ablösen und eine Aufwirbelung von aufzunehmendem Schmutz bewirkt, so dass dieser durch die Saugleitung abgeführt werden kann, und andererseits wird der Nutzungszyklus für die Filteranordnung verlängert, an der sich im Betrieb Feinstaub ablagert und die daher in Abständen beispielsweise durch Rütteln von dieser Staubbelastung befreit werden muss, damit sie für Luft ausreichend durchlässig bleibt. Wenn sich im Betrieb allmählich durch Staubablagerung der Durchtrittswiderstand für Luft erhöht, wird ein größerer Anteil der in den Schmutzsammelbehälter gelangten Luft durch die Rückführleitung auf den zu reinigenden Boden geführt und dadurch trotz der reduzierten Saugleistung eine verstärkte Aufwirbelung des aufzunehmenden Schmutzes bewirkt, so dass das Bodenreinigungsgerät auch bei einer gewissen Belastung der Filteranordnung mit Feinstaub noch effektiv weiterarbeiten kann.Such cleaning devices are known, and by the return of air to the soil to be cleaned on the one hand causes a detachment and a Aufwirehmendem dirt, so that it can be dissipated through the suction line, and on the other hand, the cycle of use is extended for the filter assembly to the During operation fine particulate matter deposits and must therefore be freed at intervals, for example, by shaking this dust load, so that it remains sufficiently permeable to air. If, in operation, the passage resistance to air gradually increases as a result of dust deposition, a larger proportion of the air which has got into the dirt collecting container will pass through Guided return line to the floor to be cleaned and thereby causes a greater resuspension of the male dirt despite the reduced suction, so that the floor cleaning device can continue to work effectively even with a certain load on the filter assembly with fine dust.
Das Rückführen von Luft in den Bereich des äußeren Endes der Saugleitung hat selbstverständlich nur dann eine unterstützende Wirkung für das Lösen und Aufwirbeln von Schmutz vom Boden, wenn der rückgeführte Luftstrom mit ausreichender Energie auf den Boden auftrifft. Dies hat jedoch auch zur Folge, dass sich die auf den Boden auftreffende, rückgeführte Luft in der Bodenebene verteilt und so die Gefahr besteht, dass Schmutz vom Boden seitlich abtransportiert wird und dadurch in die Umgebung gedrückt wird. Dies könnte zwar durch eine Reduzierung des Volumenstroms der rückgeführten Luft vermieden werden, doch würde dann auch die Wirksamkeit des Rückluftstroms für das Lösen und Aufwirbeln von Schmutz deutlich reduziert.Returning air to the region of the outer end of the suction line, of course, only has a supportive effect for loosening and stirring soil from the ground when the recirculated airflow strikes the ground with sufficient energy. However, this also means that the impacted on the ground, recirculated air distributed in the ground plane and so there is a risk that dirt is transported laterally from the ground and is thereby pressed into the environment. Although this could be avoided by reducing the volume flow of the recirculated air, but then the effectiveness of the return air flow for loosening and stirring up of dirt would be significantly reduced.
Bei einem bekannten Bodenreinigungsgerät (
Es ist Aufgabe der Erfindung, ein fahrbares Bodenreinigungsgerät so auszubilden, dass bei optimaler Schmutzablösung und -aufwirbelung durch den Rückluftstrom bei einfacher Luftführung im Saugmund das Austreten von Schmutz in die Umgebung weitestgehend vermieden wird.It is an object of the invention to provide a mobile floor cleaning device in such a way that with optimal dirt separation and -aufwirbelung by the return air flow with a simple air flow in the suction mouth, the escape of dirt in the environment is largely avoided.
Zur Lösung dieser Aufgabe wird ein Bodenreinigungsgerät der eingangs erwähnen Art erfindungsgemäß derart ausgestaltet, dass die Seitenwände des Saugmunds mit einem Öffnungswinkel von 30° bis 50°, insbesondere 34° bis 46°, divergieren, dass die obere Fläche der Bodenwand unter einem Winkel von 5° bis 15°, insbesondere 7° bis 13°, nach vorn abfällt, dass im Abstand vor der Vorderkante der Bodenwand eine bogenförmig gekrümmte, nach vorn unten geneigte, in die Seitenwände übergehende Zwischenwand vorgesehen ist, die die äußeren Enden von Saugleitung und Rückführleitung trennt und deren Unterkante zwischen sich und der Vorderkante der Bodenwand einen Rückluftaustrittsspalt bildend oberhalb der Vorderkante der Bodenwand endet, dass der gekrümmte hintere Wandabschnitt der Zwischenwand zur Horizontalen mit einem Winkel von 60° bis 80°, insbesondere 66° bis 73°, geneigt ist und die Neigung sich nach vorn derart kontinuierlich ändert, dass die Seitenwandabschnitte der Zwischenwand steiler geneigt sind, und dass die Bodenwand im Bereich der Seitenwand nach innen vorspringende Abschnitte aufweist, die zwischen den vorderen Enden der Seitenwandabschnitte der Zwischenwand und deren hinterem Ende liegen.To solve this problem, a floor cleaning device of the type mentioned is inventively designed such that the side walls of the suction mouth with an opening angle of 30 ° to 50 °, in particular 34 ° to 46 °, diverge that the upper surface of the bottom wall at an angle of 5 ° to 15 °, in particular 7 ° to 13 °, falls forward, that at a distance in front of the front edge of the bottom wall an arcuate curved , is provided forwardly downwardly inclined, passing into the side walls intermediate wall which separates the outer ends of the suction line and return line and whose lower edge between them and the front edge of the bottom wall forms a Rückluftaustrittsspalt forming above the front edge of the bottom wall that the curved rear wall portion of the intermediate wall is inclined to the horizontal at an angle of 60 ° to 80 °, in particular 66 ° to 73 °, and the inclination changes forward so continuously that the side wall portions of the intermediate wall are steeper inclined, and that the bottom wall in the region of the side wall inwards projecting portions which between the front ends of the side wall portions of the Zwi and their rear end lie.
Durch eine solche Ausbildung eines Saugmundes wird erreicht, dass die rückgeführte Luft keilförmig und mit verhältnismäßig geringer Neigung zum zu reinigenden Boden auf diesen auftrifft und über den gesamten Rückluftaustrittsspalt in das Innere des Saugmundes gerichtet ist, also beim Auftreffen der Rückluft auf den Boden entstehende Bewegungskomponenten der Luft in Richtung nach außen deutlich reduziert sind. Dadurch wird der Austritt von Schmutz über die Unterkanten der Seitenwände des Saugmundes nach außen im wesentlichen vollständig vermieden.By such a design of a suction mouth is achieved that the recirculated air wedge-shaped and with relatively low inclination to the floor to be cleaned impinges on this and is directed over the entire return air outlet gap in the interior of the suction, so upon impact of the return air to the ground resulting movement components Air in the outward direction are significantly reduced. As a result, the escape of dirt over the lower edges of the side walls of the suction mouth to the outside is substantially completely avoided.
Vorteilhafterweise ist die gekrümmte Abschlusswand in der Ebenen der Winkelhalbierenden des Öffnungswinkels der Seitenwände von der Bodenwand nach oben unter einem Winkel von 45° bis 70°, insbesondere 48° bis 61°, zur Horizontalen nach hinten geneigt. Die Rückführleitung und die zu dieser üblicherweise parallele Saugleitung können im Bereich des Saugmundes die gleiche Neigung haben.Advantageously, the curved end wall in the planes of the bisector of the opening angle of the side walls of the bottom wall upwards at an angle of 45 ° to 70 °, in particular 48 ° to 61 °, inclined to the horizontal to the rear. The return line and the suction line which is usually parallel to this can have the same inclination in the area of the suction mouth.
Zweckmäßigerweise divergieren die Unterkanten der Seitenwandabschnitte der Zwischenwand in Kehrrichtung nach vorn mit einem Öffnungswinkel von 55° bis 75°, insbesondere 59° bis 68°, und diese Seitenwandabschnitte können am vorderen Ende der nach innen vorspringenden Abschnitte in die Seitenwände des Saugmundes übergehen.Conveniently, the lower edges of the side wall portions of the intermediate wall diverge in the sweeping forward with an opening angle of 55 ° to 75 °, in particular 59 ° to 68 °, and these side wall portions can merge at the front end of the inwardly projecting portions in the side walls of the suction mouth.
Die vorderen Enden der nach innen vorspringenden Abschnitte können in einem Abstand vom vorderen Ende der jeweils zugehörigen Seitenwand liegen, der 20% bis 40% des Abstandes dieses vorderen Endes von der Mitte der Abschlusswand beträgt.The forward ends of the inwardly projecting portions may be spaced from the forward end of the respective associated side wall which is 20% to 40% of the distance of that forward end from the center of the end wall.
Die Erfindung wird im folgenden anhand der schematisch ein Ausführungsbeispiel zeigenden Figuren näher erläutert.
- Figur 1
- zeigt in einer Seitenansicht eine fahrbare Bodenreinigungsmaschine.
Figur 2- zeigt in einer Teildarstellung schematisch die Schmutzaufsaugeinrichtung der Bodenreinigungsmaschine aus
Figur 1 . Figur 3- zeigt im Schnitt den Saugmund der Bodenreinigungsmaschine aus
Figur 1 . Figur 4- zeigt den Saugmund aus
Figur 3 - Figur 5
- zeigt die einstückige Wandausbildung des Saugmundes aus den
Figuren 34 . Figur 6- zeigt einen Schnitt entlang der Linie VI-VI aus
Figur 5 .
- FIG. 1
- shows a side view of a mobile floor cleaning machine.
- FIG. 2
- shows in a partial view schematically the dirt suction of the floor cleaning machine
FIG. 1 , - FIG. 3
- shows in section the suction mouth of the floor cleaning machine
FIG. 1 , - FIG. 4
- shows the suction mouth
FIG. 3 in a view diagonally from below. - FIG. 5
- shows the one-piece wall education of Saugmund from the
Figures 3 and4 , - FIG. 6
- shows a section along the line VI-VI
FIG. 5 ,
Das in
Das Reinigungssystem 11 enthält einen nicht näher dargestellten Schmutzsammelbehälter, der über eine Filteranordnung 13 gegenüber der Umgebung geschlossen ist und der ein Sauggebläse 12 aufweist, das im Betrieb einen Unterdruck erzeugt und so über ein sich schräg vom oberen Teil der hinteren Plattform 2 unter die vordere Plattform erstreckendes Saugrohr im Bereich eines noch zu beschreibenden, am unteren Ende des Saugrohres 13 vorgesehenen Saugmund 20 einen Saugluftstrom erzeugt, um Schmutz vom zu reinigenden Boden aufzunehmen, der teilweise von üblichen Seitenbesen (nur ein Seitenbesen 9 dargestellt) in den Öffnungsbereich des Saugmundes 20 transportiert werden kann. Parallel zum Saugrohr 13 verläuft an der in Kehrrichtung hinteren Seite von diesem ein Rückführrohr 14, das mit seinem unteren Ende in ebenfalls noch zu beschreibender Weise in den Saugmund 20 mündet und dessen oberes Ende sich in den oberen Teil des Schmutzsammelbehälters bzw. in einen Bereich oberhalb dieses Schmutzsammelbehälters erstreckt.The
Der Saugmund 20 hat eine Trägerplatte 21, an deren vorderer Seite ein Abweisbügel 23 und an deren hinterem Bereich Stützrollen 24 und 25 befestigt sind, die den Saugmund im Betrieb in einer vorgegebenen Höhe über dem zu reinigenden Boden halten. An der Vorderseite der Trägerplatte 21 ist eine elastisch verformbare, durch Einschnitt in einzelne Lappenbereiche unterteilte Schutzwand 26 vorhanden, die einerseits aufzunehmende Schmutzteile bis zu einer bestimmten Größe durchtreten lässt und die andererseits verhindert, dass zu große Teile in den Saugbereich gelangen.The
Ferner ist an der Trägerplatte 21 ein Formteil befestigt, das Seitenwände 30 und 31 hat, die nach vorn unter einem Winkel ε von 30° bis 50°, vorzugsweise 34° bis 46°, divergieren, also sich nach vorn erweitern, während sie nach hinten in eine das hintere Ende des Formkörpers bildende, gekrümmte Abschlusswand 32 übergehen. Diese gekrümmte Abschlusswand ist unter einem Winkel β von etwa 45° bis 70°, vorzugsweise 48° bis 61°, zur Horizontalen geneigt, und an sie schließt eine Bodenwand 33 an, die sich von der Abschlusswand 32 nach vorn erstreckt und im anschließenden Bereich der Seitenwände 30, 31 nach innen vorspringende Abschnitte 36, 37 hat. Die vorderen Enden der Abschnitte 36, 37 liegen in einem Abstand vom vorderen Ende der jeweiligen Seitenwand 30, 31, der etwa 20% bis 40% des Abstandes dieses vorderen Endes von der Mitte der Abschlusswand 32 beträgt. Die obere Fläche 35 der Bodenwand fällt unter einem Winkel α von 5° bis 15°, vorzugsweise 7° bis 13°, zur Horizontalen von hinten nach vorn ab, und auch die Abschnitte 36 und 37 haben eine entsprechende Neigung von den Seitenwänden 30, 31 nach innen und unten.Further, on the
Im Formkörper ist eine Zwischenwand gebildet, die Seitenwandabschnitte 38 und 39 aufweist, die etwa am vorderen Ende der nach innen vorspringenden Abschnitte 36 und 37 der Bodenwand in die Seitenwände 30 und 31 übergeben und die einen gekrümmten hinteren Zwischenwandabschnitt 40 ausbilden. Dieser ist zur Horizontalen unter einem Winkel χ von 60° bis 80°, vorzugsweise 66° bis 73°, geneigt. Die Oberkanten der Seitenwandabschnitte 38 und 39 der Zwischenwand divergieren unter einem Winkel Φ von 50° bis 70° nach vorn, während ihre Unterkanten unter einem Winkel von etwa 55° bis 75°, vorzugsweise 59° bis 68°, divergieren. Ihre Steilheit nimmt gegenüber derjenigen des hinteren Zwischenwandabschnittes 40 kontinuierlich zu.In the molded body, an intermediate wall is formed, the
Wie insbesondere
Durch die beschriebene Ausbildung der verschiedenen Wände ergibt sich zwischen der Vorderkante 34 der Bodenwand 33 und der etwas höher liegenden Unterkante 41 der Zwischenwand 38, 39, 40 ein Durchtrittsspalt, durch den, wie durch die Pfeile in den
Im Reinigungsbetrieb nimmt die durch das Saugrohr 13 in Richtung auf den Schmutzsammelbehälter strömende Luft Schmutz- und Staubteilchen vom Boden auf und transportiert diese im Saugrohr 13 nach oben. Im Bereich des Schmutzsammelbehälters werden aus dem Luftstrom in üblicher Weise größere Schmutzteilchen durch einen unkritischen Grobfilter abgeschieden und fallen in den Schmutzsammelbehälter, während mit Feinstaub belastete Luft durch die Filteranordnung 13' in die Umgebung strömt, wobei der in ihr enthaltene Feinstaub in der Filteranordnung zurückgehalten wird. Ein Teil der durch das Saugrohr 13 geförderten Luft wird durch die Rückführleitung 14 in der beschriebenen Weise in den Bereich vor der Zwischenwand 38, 39, 40 und zwischen den Seitenwänden 30, 31 auf den zu reinigenden Boden geleitet und unterstützt das Ablösen und Aufwirbeln von Schmutz- und Staubteilchen, die mittels des Saugluftstromes durch das Saugrohr 13 abgeführt werden.In the cleaning operation, the air flowing through the
Der Volumenstrom des Rückluftstroms nimmt zu, wenn die Durchlässigkeit der Filteranordnung 13' infolge Belastung mit Feinstaub abnimmt. So kann beispielsweise bei einem unbelasteten Filter die Saugluft mit einem Volumenstrom von 0,77 m3/s bei einer Luftströmungsgeschwindigkeit von 33 m/s wirken und die Rückluft mit einem Volumenstrom von 0,17 m3/s und einer Luftströmungsgeschwindigkeit von 23 m/s auf den zu reinigenden Boden geleitet werden. Eine Belastung des Filters von etwa 80 %, d.h. eine Reduzierung seiner Luftdurchlässigkeit auf 20%, führt zu einer Verminderung der Saugluft auf einen Volumenstrom von 0,33 m3/s bei einer Luftströmungsgeschwindigkeit von 14 m/s, während die Rückluft sich auf einem Volumenstrom von 0,22 m3/s bei einer Luftströmungsgeschwindigkeit von 31 m/s erhöht. Zumindest bis zu dieser Veränderung der Verhältnisse von Saugluftstrom zu Rückluftstrom kann das in Frage stehende Bodenreinigungsgerät noch ohne Reinigung der Filteranordnung wirksam arbeiten. Erst bei weiterer Zunahme der Filterbelastung ist es sinnvoll, den Reinigungsbetrieb zu unterbrechen und die Filteranordnung durch Abklopfen des angesammelten Feinstaubes wieder voll funktionsfähig zu machen, obwohl sich gezeigt hat, dass selbst bei weiter erhöhter Filterbelastung noch eine brauchbare Arbeitsweise erreicht wird.The volume flow of the return air flow increases when the permeability of the filter assembly 13 'due to particulate matter decreases. Thus, for example, in the case of an unloaded filter, the suction air can act with a volume flow of 0.77 m 3 / s at an air flow speed of 33 m / s and the return air with a volume flow of 0.17 m 3 / s and an air flow speed of 23 m / s are directed to the floor to be cleaned. A load of the filter of about 80%, ie a reduction of its air permeability to 20%, leads to a reduction of the suction air to a flow rate of 0.33 m 3 / s at an air flow rate of 14 m / s, while the return air is on a Volume flow of 0.22 m 3 / s increased at an air flow rate of 31 m / s. At least until this change in the ratios of suction air flow to return air flow, the floor cleaning device in question can work effectively without cleaning the filter assembly. Only with further increase in the filter load, it makes sense to interrupt the cleaning operation and to make the filter assembly fully functional again by tapping the accumulated particulate matter, although it has been shown that even with further increased filter load still a useful operation is achieved.
Claims (6)
- Self-propelled floor cleaner with a dirt suctioning device, which with its external end picks up dirt from the floor to be cleaned, with a dirt collecting container, which is connected to the internal end of the dirt suctioning device, and with a filter arrangement (13') through which air which has passed through the dirt suctioning device into the dirt collecting container exits the latter, whereby the dirt suctioning device comprises a suction line (13) and a return line (14), through which air from the dirt collecting container adjacent to and in sweeping direction behind the external end of the suction line (13) is returned to the floor to be cleaned, and whereby the external ends of the suction line (13) and return line (14) open into a suction mouth (20), the side walls (30, 31) of which diverge to the front in sweeping direction and at the rear end form a curved end wall (32), from the lower edge of which a base wall (33) extends to the front, the upper surface of which inclines forwards at an angle (α) and ends in a curved front edge (34)
characterised in that- the side walls (30, 31) of the suction mouth (20) diverge with an opening angle (ε) of 30° to 50°, in particular 34° to 46°,- in that the upper face of the base wall (33) inclines forwards at an angle (α) of 5° to 15°, in particular 7° to 13°,- in that at a distance in front of the front edge (34) of the base wall (33) a curved intermediate wall (38, 39, 40) inclined downwards to the front and passing into the side walls (30, 31) is provided, which separates the external ends of the suction line (13) and return line (14) and the lower edge (41) of which ends between itself and the front edge (34) of the base wall (33) forming a return air outlet gap above the front edge (34) of the base wall (33),- in that the curved rear wall section (40) of the intermediate wall (38, 39, 40) is inclined to the horizontal at an angle (x) of 60° to 80°, in particular 66° to 73°, and the inclination changes to the front continually such that the side wall sections (38, 39) of the intermediate wall are inclined more steeply, and- in that the base wall (33) in the region of the side wall (30, 31) comprises inwardly projecting sections (36, 37), which lie between the front ends of the side wall sections (38, 39) of the intermediate wall (38, 39, 40) and its rear end. - Floor cleaning device according to claim 1, characterised in that the curved end wall (32) in the plane of the angle bisector of the opening angle (ε) of the side walls (30, 31) is inclined to the rear from the base wall (33) upwards at an angle (β) of 45° to 70°, in particular 48° to 61 °, relative to the horizontal.
- Floor cleaning device according to claim 2, characterised in that the return line (14) runs at least adjacent to the suction mouth (20) with the same inclination as the end wall (32).
- Floor cleaning device according to one of claims 1 to 3, characterised in that the side wall sections (38, 39) of the intermediate wall (38, 39, 40) in the region of the front ends of the inwardly projecting sections (36, 37) of the base wall (33) pass into the side walls (30, 31).
- Floor cleaning device according to one of claims 1 to 4, characterised in that the front ends of the inwardly projecting sections (36, 37) lie at a distance from the front end of the respective associated side wall (30, 31), which is 20% to 40% of the distance of said front end from the middle of the end wall (32).
- Floor cleaning device according to one of claims 1 to 5, characterised in that the suction line (13) and return line (14) run parallel to one another.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10030725 | 2000-06-23 | ||
| DE10030725A DE10030725C2 (en) | 2000-06-23 | 2000-06-23 | Mobile floor cleaning device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1167631A2 EP1167631A2 (en) | 2002-01-02 |
| EP1167631A3 EP1167631A3 (en) | 2003-09-17 |
| EP1167631B1 true EP1167631B1 (en) | 2009-05-27 |
Family
ID=7646614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01113629A Expired - Lifetime EP1167631B1 (en) | 2000-06-23 | 2001-06-18 | Mobile floor cleaning apparatus |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1167631B1 (en) |
| AT (1) | ATE432388T1 (en) |
| DE (2) | DE10030725C2 (en) |
| ES (1) | ES2326208T3 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018224153A1 (en) | 2017-06-08 | 2018-12-13 | Alfred Kärcher SE & Co. KG | Suction machine having a removable suction mouth device, suction mouth device for a suction machine, method for fixing a removable suction mouth device on a suction machine, and method for releasing a suction mouth device from a suction machine |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040226584A1 (en) | 2003-05-14 | 2004-11-18 | Michael Guest | Multifunctional surface cleaning machine and method of using the same |
| US7533435B2 (en) | 2003-05-14 | 2009-05-19 | Karcher North America, Inc. | Floor treatment apparatus |
| US8302240B2 (en) | 2009-07-29 | 2012-11-06 | Karcher North America, Inc. | Selectively adjustable steering mechanism for use on a floor cleaning machine |
| US20120096671A1 (en) | 2010-10-26 | 2012-04-26 | Karcher North America, Inc. | Floor cleaning apparatus employing a combined sweeper and vaccum assembly |
| ATE553264T1 (en) * | 2005-10-07 | 2012-04-15 | Dulevo Int Spa | DEVICE FOR SUCTIONING WASTE AND CONTAMINANT SUBSTANCES FROM THE GROUND |
| USD654234S1 (en) | 2010-12-08 | 2012-02-14 | Karcher North America, Inc. | Vacuum bag |
| US8978190B2 (en) | 2011-06-28 | 2015-03-17 | Karcher North America, Inc. | Removable pad for interconnection to a high-speed driver system |
| CN102392428B (en) * | 2011-11-03 | 2013-12-25 | 长沙中联重科环卫机械有限公司 | Feed inlet adjusting device for suction nozzle and suction nozzle |
| CN102367656B (en) * | 2011-11-18 | 2013-08-28 | 长沙中联重科环卫机械有限公司 | Sweeping car and suction nozzle device thereof |
| USD693529S1 (en) | 2012-09-10 | 2013-11-12 | Karcher North America, Inc. | Floor cleaning device |
| DE102013204394A1 (en) * | 2013-03-13 | 2014-09-18 | Hako Gmbh | Floor cleaning machine with a coupling device for an attachment |
| CN103572728B (en) * | 2013-11-01 | 2015-08-12 | 中联重科股份有限公司 | Cyclone suction nozzle and cleaning vehicle |
| CN105603920B (en) * | 2014-11-07 | 2017-06-16 | 长沙中联重科环卫机械有限公司 | Cleaning suction nozzle and cleaning vehicle |
| EP3618676B1 (en) | 2017-05-04 | 2023-09-20 | Alfred Kärcher SE & Co. KG | Floor cleaning device and method for cleaning a floor surface |
| USD907868S1 (en) | 2019-01-24 | 2021-01-12 | Karcher North America, Inc. | Floor cleaner |
| CN111021297B (en) * | 2019-10-14 | 2021-12-24 | 长沙中联重科环境产业有限公司 | Garbage suction system and sweeping vehicle with same |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2018791A (en) * | 1930-10-20 | 1935-10-29 | Kern Bernard | Pneumatic cleaner |
| CH613735A5 (en) * | 1977-02-28 | 1979-10-15 | Rapid Masch Fahrzeuge Ag | Method of cleaning plane surfaces and roads as well as cleaning machine for implementing the method |
| DE3406603A1 (en) * | 1983-02-28 | 1984-09-06 | Gorenje Muta tovarna poljedelskega orodja, kmetijskih strojev in livarskih izdelkov n.sol.o. Muta, Muta | CLEANER |
| DE3316952A1 (en) * | 1983-05-09 | 1984-11-15 | Kuka Umwelttechnik GmbH, 8900 Augsburg | Method and device for cleaning road surfaces according to the circulating-air principle |
| DE3442602C1 (en) * | 1984-08-08 | 1986-03-06 | Ing. Alfred Schmidt Gmbh, 7822 St Blasien | Suction device |
| GB9004076D0 (en) * | 1990-02-23 | 1990-04-18 | Coathupe John E | Improvements relating to collection devices |
| DE9113985U1 (en) * | 1991-11-11 | 1992-01-02 | IKF Industrie- und Kommunalfahrzeuge GmbH, 8011 Brunnthal | Self-propelled suction sweeper |
-
2000
- 2000-06-23 DE DE10030725A patent/DE10030725C2/en not_active Expired - Fee Related
-
2001
- 2001-06-18 ES ES01113629T patent/ES2326208T3/en not_active Expired - Lifetime
- 2001-06-18 DE DE50114909T patent/DE50114909D1/en not_active Expired - Lifetime
- 2001-06-18 EP EP01113629A patent/EP1167631B1/en not_active Expired - Lifetime
- 2001-06-18 AT AT01113629T patent/ATE432388T1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018224153A1 (en) | 2017-06-08 | 2018-12-13 | Alfred Kärcher SE & Co. KG | Suction machine having a removable suction mouth device, suction mouth device for a suction machine, method for fixing a removable suction mouth device on a suction machine, and method for releasing a suction mouth device from a suction machine |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10030725A1 (en) | 2002-01-17 |
| EP1167631A2 (en) | 2002-01-02 |
| DE50114909D1 (en) | 2009-07-09 |
| ES2326208T3 (en) | 2009-10-05 |
| DE10030725C2 (en) | 2002-04-25 |
| ATE432388T1 (en) | 2009-06-15 |
| EP1167631A3 (en) | 2003-09-17 |
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