EP1474029A1 - Floor cleaning device - Google Patents

Floor cleaning device

Info

Publication number
EP1474029A1
EP1474029A1 EP02758220A EP02758220A EP1474029A1 EP 1474029 A1 EP1474029 A1 EP 1474029A1 EP 02758220 A EP02758220 A EP 02758220A EP 02758220 A EP02758220 A EP 02758220A EP 1474029 A1 EP1474029 A1 EP 1474029A1
Authority
EP
European Patent Office
Prior art keywords
cleaning device
floor cleaning
housing
openings
closure body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02758220A
Other languages
German (de)
French (fr)
Other versions
EP1474029B1 (en
Inventor
Jürgen Binder
Thomas Hofer
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 EP1474029A1 publication Critical patent/EP1474029A1/en
Application granted granted Critical
Publication of EP1474029B1 publication Critical patent/EP1474029B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • E01H1/10—Hydraulically loosening or dislodging undesirable matter; Raking or scraping apparatus ; Removing liquids or semi-liquids e.g., absorbing water, sliding-off mud
    • E01H1/101—Hydraulic loosening or dislodging, combined or not with mechanical loosening or dislodging, e.g. road washing machines with brushes or wipers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/024—Cleaning by means of spray elements moving over the surface to be cleaned

Definitions

  • the invention relates to a floor cleaning device with a hood-shaped housing that is open towards its underside, closed laterally and on its upper side, and a spray arm that can be rotated about a vertical axis therein and has at least one outlet for a cleaning medium directed toward the open underside of the housing, wherein At least one opening is arranged on the top of the housing, through which air is sucked in from the surroundings into the interior of the housing.
  • Openings in the top of the housing allow ambient air to enter the interior of the housing, which is sucked in by the rotational movement of the spray arm and is expelled by the spray arm through the open underside of the housing. This forms an air cushion below the housing, which lifts the housing and keeps it at a distance from the surface to be cleaned.
  • This air cushion effect is permanently provided in the known floor cleaning device, since ambient air is always sucked in through the openings in the housing when the spray arm rotates.
  • This object is achieved according to the invention in a floor cleaning device of the type described in the opening paragraph in that the openings can be completely or partially closed.
  • the user therefore has the possibility, through the different opening of the openings, to adjust the amount of air drawn in during operation as the user wishes, it is also possible to completely close the openings and thereby completely prevent the air from being drawn in. This gives the user the option of dosing or completely switching off the air cushion effect.
  • a closure body is mounted on the housing, which can be displaced along the upper side to a greater or lesser extent over the cross section of the openings between an opening position releasing the openings and a closing position closing them.
  • the closure body can be arranged on the inside of the top.
  • the closure body has at least one opening, which covers at least one opening of the housing in the open position of the closure body and is laterally offset in relation to or in the closed position.
  • a plurality of openings are preferably arranged on the upper side of the housing. These can be arranged in groups, between which non-perforated areas remain.
  • the openings are distributed around the axis of rotation of the spray arm in the top of the housing, so that when ambient air is sucked in, it is sucked in uniformly over the circumference.
  • a particularly advantageous embodiment is one in which it is provided that the closure body rotatably rests on the upper side, in particular the axis of rotation of the closure body can coincide with the axis of rotation of the spray arm.
  • closure body extends substantially over the entire top of the housing.
  • the closure body is preferably plate-shaped.
  • closure body can be displaced between its open position and its closed position by a handling element arranged on the outside of the housing.
  • the openings are labyrinthine, so that the path of the ambient air drawn in changes several times in its direction. This can be achieved in particular that no splashes of the cleaning liquid to the outside from the interior of the housing emerge, while on the other hand ambient air can freely enter the interior via this angled flow path.
  • the upper side is ribbed so that alternately outwardly and inwardly open grooves lie side by side, and that an opening is provided in the partition between adjacent grooves to form an opening on the upper side.
  • These openings are located only in certain areas of the grooves in these partitions, so that there are areas with openings and areas without openings in the top. The areas with openings can be more or less covered by the closure body and thereby closed.
  • the spray arm has at least one wing-shaped section which, in the manner of a propeller or fan, sucks in an air stream from the environment through the openings on the top and releases it again through the open underside of the housing.
  • the spray arm can in particular have two wing-shaped sections diametrically opposite on both sides of the axis of rotation.
  • Figure 1 is a sectional view of a floor cleaning device with the housing open at the bottom and a spray arm rotatably mounted therein;
  • Figure 2 is a plan view of the floor cleaning device of Figure 1 in the direction of arrow A;
  • Figure 3 is a sectional view taken along line 3-3 in Figure 1;
  • Figure 4 is a sectional view taken along line 4-4 in Figure 2;
  • Figure 5 an enlarged detail view of area B in Figure 1 with adjacent, separate grooves in the top of the housing and
  • FIG. 6 a view similar to FIG. 5 with grooves connected to one another by openings in the upper side of the housing in order to form openings for sucking in ambient air.
  • the floor cleaning device 1 shown in the drawing comprises a hood-shaped or bell-shaped housing 2, which is circular in cross-section, with a circumferential, closed side wall 3, an open underside 4 and a closed, slightly upwardly curved upper side 5 surrounded by a brush wreath, not shown in the drawing be, which closes the interior at the lower end of the side wall 3 to the environment.
  • a liquid jet discharged through the outlet nozzle 11 is directed through the open underside 4 of the housing 2 against a surface to be cleaned, onto which the floor cleaning device 1 is placed.
  • the spray arms 10 could theoretically be connected in a rotationally fixed manner to the bearing shaft 8, which then rotates with the spray arms 10, but it is also possible to hold the bearing shaft 8 in a rotationally fixed manner in the bearing bore 7 and to rotate the spray arms 10 in a suitable manner on the bearing shaft 8 to store. In both cases, the bearing shaft 8 can also be adjustable in height, but this is not explained in more detail.
  • the cleaning liquid is supplied via a feed pipe 12 which opens radially into the bearing bore 7 and which is connected to an annular space 13 which surrounds a radially recessed section 14 of the bearing shaft 8. This annular space 13 is sealed by seals 15 at both opposite ends relative to the inner wall of the bearing bore 7 and is connected via a radial bore 16 to an inner bore 17, which in turn is connected to the outlet nozzles 11 via longitudinal bores 18 in the spray arms 10.
  • the top 5 of the housing 2 is ribbed and thus has a plurality of mutually parallel, immediately adjacent, alternately outwardly and inwardly open grooves 19 which are parallel to the feed pipe 12 and are rectilinear ( Figure 2). These grooves 19 are separated from one another by partitions 20, which each form the side faces of the grooves 19.
  • openings 22 are provided in the partition walls 20, each of which connects an outwardly facing groove 19 and the adjacent inwardly facing groove 19 and thus forms a flow path through which ambient air can reach the interior 9 of the housing 2 ( Figure 6).
  • Such openings 22 are missing in other partial areas 23 of the upper side 5, so in these partial areas 23 the partition walls 20 completely separate adjacent grooves 19 from one another, so that in these partial areas 23 there are no flow paths which allow the suction of ambient air (FIG. 5).
  • the sections 21 and 23 are each formed by adjacent circular sectors which extend between the bearing bush 6 on the one hand and the side wall 3 on the other and which alternate with one another, the opening angle of such a sector-shaped section is 30 ° in the exemplary embodiment shown.
  • a locking plate 25 is rotatably mounted on a bearing ring 24 concentrically surrounding the bearing bush 6, optionally formed in one piece with the bearing bush 6, which bears tightly against the inner wall of the upper side 5 and covers it practically completely.
  • this closure plate 25 there are sector-shaped cutouts 26 with an opening angle which corresponds to the opening angle of the partial areas 21 and 23; these cutouts 26 are separated from one another by closed partial areas 27 which also extend over an opening angle of approximately 30 °.
  • the spray arms 10 carry wing-shaped widenings 30 which, when the spray arms rotate in the manner of a propeller or fan, produce an air flow which directs ambient air into the interior 9 through the openings 22 through the openings 22 and then this ambient air through the open underside 4 of the Releases housing 2 again. This forms an air cushion in the area of the interior 9, through which the floor cleaning device 1 is kept at a distance from the surface to be cleaned.
  • This air inflow can be controlled in that the closure plate 25 is brought into different angular positions by means of the pin 28, in which it covers the open partial areas 21 more or less and thereby changes the inflow cross-sections available for the air flow.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Cleaning In General (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Pinball Game Machines (AREA)

Abstract

The invention relates to a floor cleaning device (1) with a hood-type housing (2) that is open toward the bottom and closed at its sides and its top and with a spray arm (10) that can be rotated inside the housing about a vertical axis and that has at least one outlet (11) for a cleaning medium directed toward the open bottom of the housing. At least one passage (19, 22) is disposed in the top of the housing through which ambient air is sucked in to the interior of the housing. Said passages can be completely or partially closed so that the flow of ambient air sucked into the interior can be controlled.

Description

Bodenreinigungsgerät Floor cleaning device
Die Erfindung betrifft ein Bodenreinigungsgerät mit einem haubenformigen, zu seiner Unterseite hin offenen, seitlich und an seiner Oberseite abgeschlossenen Gehäuse und einem in diesem um eine senkrechte Achse drehbaren Sprüharm, der mindestens einen zur offenen Unterseite des Gehäuses hin gerichteten Auslaß für ein Reinigungsmedium aufweist, wobei an der Oberseite des Gehäuses mindestens eine Durchbrechung angeordnet ist, durch die Luft aus der Umgebung in den Innenraum des Gehäuses angesaugt wird.The invention relates to a floor cleaning device with a hood-shaped housing that is open towards its underside, closed laterally and on its upper side, and a spray arm that can be rotated about a vertical axis therein and has at least one outlet for a cleaning medium directed toward the open underside of the housing, wherein At least one opening is arranged on the top of the housing, through which air is sucked in from the surroundings into the interior of the housing.
Ein solches Bodenreinigungsgerät ist beispielsweise in der DE 25 48 432 C2 beschrieben. Durch Durchbrechungen in der Oberseite des Gehäuses kann Umgebungsluft in den Innenraum des Gehäuses eintreten, die durch die Rotationsbewegung des Sprüharmes angesaugt wird und von diesem durch die offene Unterseite des Gehäuses wieder ausgestoßen wird. Dadurch bildet sich unterhalb des Gehäuses ein Luftpolster, welches das Gehäuse anhebt und im Abstand zu der zu reinigenden Fläche hält.Such a floor cleaning device is described for example in DE 25 48 432 C2. Openings in the top of the housing allow ambient air to enter the interior of the housing, which is sucked in by the rotational movement of the spray arm and is expelled by the spray arm through the open underside of the housing. This forms an air cushion below the housing, which lifts the housing and keeps it at a distance from the surface to be cleaned.
Dieser Luftpolstereffekt ist bei dem bekannten Bodenreinigungsgerät dauerhaft vorgesehen, da durch die Öffnungen im Gehäuse immer Umgebungsluft angesaugt wird, wenn sich der Sprüharm dreht.This air cushion effect is permanently provided in the known floor cleaning device, since ambient air is always sucked in through the openings in the housing when the spray arm rotates.
Es ist Aufgabe der Erfindung, ein gattungsgemäßes Bodenreinigungsgerät so zu verbessern, daß der Zustrom von Umgebungsluft regelbar ist, um den Luftpolstereffekt an die jeweils erforderlichen Gegebenheiten anzupassen. Diese Aufgabe wird bei einem Bodenreinigungsgerät der eingangs beschriebenen Art erfindungsgemäß dadurch gelöst, daß die Durchbrechungen völlig oder teilweise verschließbar sind.It is an object of the invention to improve a generic floor cleaning device in such a way that the inflow of ambient air can be regulated in order to adapt the air cushion effect to the conditions required in each case. This object is achieved according to the invention in a floor cleaning device of the type described in the opening paragraph in that the openings can be completely or partially closed.
Der Benutzer hat daher die Möglichkeit, durch die unterschiedliche Öffnung der Durchbrechungen die Menge der im Betrieb angesaugten Luft so einzustellen, wie es der Benutzer wünscht, es ist auch möglich, die Durchbrechungen völlig zu verschließen und dadurch eine Ansaugung von Umgebungsluft ganz zu verhindern. Damit hat der Benutzer die Möglichkeit, den Luftpolstereffekt zu dosieren oder ganz auszuschalten.The user therefore has the possibility, through the different opening of the openings, to adjust the amount of air drawn in during operation as the user wishes, it is also possible to completely close the openings and thereby completely prevent the air from being drawn in. This gives the user the option of dosing or completely switching off the air cushion effect.
Bei einer bevorzugten Ausführungsform ist vorgesehen, daß zum Verschluß der Durchbrechungen ein Verschlußkörper an dem Gehäuse gelagert ist, der längs der Oberseite den Querschnitt der Durchbrechungen mehr oder weniger überdeckend zwischen einer die Durchbrechungen freigebenden Öffnungsstellung und einer diese verschließenden Schließstellung verschiebbar ist.In a preferred embodiment it is provided that for the closure of the openings, a closure body is mounted on the housing, which can be displaced along the upper side to a greater or lesser extent over the cross section of the openings between an opening position releasing the openings and a closing position closing them.
Insbesondere kann der Verschlußkörper an der Innenseite der Oberseite angeordnet sein.In particular, the closure body can be arranged on the inside of the top.
Es kann vorgesehen sein, daß der Verschlußkörper mindestens eine Durchbrechung aufweist, die in der Offenstellung des Verschlußkörpers mindestens eine Durchbrechung des Gehäuses überdeckt und in der Schließstellung seitlich gegenüber dieser bzw. diesen versetzt ist. Vorzugsweise sind an der Oberseite des Gehäuses eine Vielzahl von Durchbrechungen angeordnet. Diese können in Gruppen angeordnet sein, zwischen denen durchbrechungsfreie Bereiche verbleiben.It can be provided that the closure body has at least one opening, which covers at least one opening of the housing in the open position of the closure body and is laterally offset in relation to or in the closed position. A plurality of openings are preferably arranged on the upper side of the housing. These can be arranged in groups, between which non-perforated areas remain.
Es ist vorteilhaft, wenn die Durchbrechungen um die Drehachse des Sprüharmes in der Oberseite des Gehäuses verteilt sind, so daß bei Ansaugung von Umgebungsluft diese gleichmäßig über den Umfang verteilt angesaugt wird.It is advantageous if the openings are distributed around the axis of rotation of the spray arm in the top of the housing, so that when ambient air is sucked in, it is sucked in uniformly over the circumference.
Besonders vorteilhaft ist eine Ausgestaltung, bei der vorgesehen ist, daß der Verschlußkörper drehbar an der Oberseite anliegt, insbesondere kann die Drehachse des Verschlußkörpers mit der Drehachse des Sprüharmes zusammenfallen.A particularly advantageous embodiment is one in which it is provided that the closure body rotatably rests on the upper side, in particular the axis of rotation of the closure body can coincide with the axis of rotation of the spray arm.
Es kann dabei vorgesehen sein, daß sich der Verschlußkörper im wesentlichen über die gesamte Oberseite des Gehäuses erstreckt.It can be provided that the closure body extends substantially over the entire top of the housing.
Vorzugsweise ist der Verschlußkörper plattenförmig ausgebildet.The closure body is preferably plate-shaped.
Es ist günstig, wenn der Verschlußkörper durch ein an der Außenseite des Gehäuses angeordnetes Handhabungselement zwischen seiner Öffnungsstellung und seiner Schließstellung verschiebbar ist.It is favorable if the closure body can be displaced between its open position and its closed position by a handling element arranged on the outside of the housing.
Die Durchbrechungen sind gemäß einer bevorzugten Ausführungsform der Erfindung labyrinthförmig ausgebildet, so daß der Weg der angesaugten Umgebungsluft sich mehrfach in seiner Richtung ändert. Dadurch kann insbesondere erreicht werden, daß aus dem Innenraum des Gehäuses keine Spritzer der Reinigungsflüssigkeit nach außen austreten, während andererseits Umgebungsluft über diesen abgewinkelten Strömungsweg in den Innenraum ungehindert eintreten kann.According to a preferred embodiment of the invention, the openings are labyrinthine, so that the path of the ambient air drawn in changes several times in its direction. This can be achieved in particular that no splashes of the cleaning liquid to the outside from the interior of the housing emerge, while on the other hand ambient air can freely enter the interior via this angled flow path.
Bei einer besonders bevorzugten Ausführungsform ist vorgesehen, daß die Oberseite gerippt ist, so daß abwechselnd nach außen und nach innen offene Nuten nebeneinanderliegen, und daß zur Ausbildung einer Durchbrechung an der Oberseite eine Öffnung in der Trennwand zwischen benachbarten Nuten vorgesehen ist. Es ergibt sich somit ein Strömungsweg, der durch die benachbarten Nuten und die sie verbindende Öffnung hindurchführt. Diese Öffnungen befinden sich nur in bestimmten Bereichen der Nuten in diesen Trennwänden, so daß es Bereiche mit Durchbrechungen und Bereiche ohne Durchbrechungen in der Oberseite gibt. Die Bereiche mit Durchbrechungen können durch den Verschlußkörper mehr oder weniger abgedeckt und dadurch verschlossen werden.In a particularly preferred embodiment it is provided that the upper side is ribbed so that alternately outwardly and inwardly open grooves lie side by side, and that an opening is provided in the partition between adjacent grooves to form an opening on the upper side. This results in a flow path that leads through the adjacent grooves and the opening connecting them. These openings are located only in certain areas of the grooves in these partitions, so that there are areas with openings and areas without openings in the top. The areas with openings can be more or less covered by the closure body and thereby closed.
Günstig ist es, wenn der Sprüharm mindestens einen flügeiförmigen Abschnitt aufweist, der nach Art eines Propellers oder Ventilators einen Luftstrom aus der Umgebung durch die Durchbrechungen an der Oberseite hindurch ansaugt und durch die offene Unterseite des Gehäuses wieder abgibt.It is expedient if the spray arm has at least one wing-shaped section which, in the manner of a propeller or fan, sucks in an air stream from the environment through the openings on the top and releases it again through the open underside of the housing.
Der Sprüharm kann insbesondere zwei zu beiden Seiten der Drehachse diametral gegenüberliegende flügeiförmige Abschnitte aufweisen.The spray arm can in particular have two wing-shaped sections diametrically opposite on both sides of the axis of rotation.
Die nachfolgende Beschreibung bevorzugter Ausführungsformen der Erfindung dient im Zusammenhang mit der Zeichnung der näheren Erläuterung. Es zeigen: Figur 1: eine Schnittansicht eines Bodenreinigungsgerätes mit nach unten offenem Gehäuse und einem darin drehbar gelagerten Sprüharm;The following description of preferred embodiments of the invention serves in conjunction with the drawing for a more detailed explanation. Show it: Figure 1 is a sectional view of a floor cleaning device with the housing open at the bottom and a spray arm rotatably mounted therein;
Figur 2: eine Draufsicht auf das Bodenreinigungsgerät der Figur 1 in Richtung des Pfeiles A;Figure 2 is a plan view of the floor cleaning device of Figure 1 in the direction of arrow A;
Figur 3: eine Schnittansicht längs Linie 3-3 in Figur 1;Figure 3 is a sectional view taken along line 3-3 in Figure 1;
Figur 4: eine Schnittansicht längs Linie 4-4 in Figur 2;Figure 4 is a sectional view taken along line 4-4 in Figure 2;
Figur 5: eine vergrößerte Detailansicht des Bereiches B in Figur 1 mit nebeneinanderliegenden, voneinander getrennten Nuten in der Oberseite des Gehäuses undFigure 5: an enlarged detail view of area B in Figure 1 with adjacent, separate grooves in the top of the housing and
Figur 6: eine Ansicht ähnlich Figur 5 mit durch Öffnungen miteinander verbundenen Nuten in der Oberseite des Gehäuses zur Ausbildung von Durchbrechungen zur Ansaugung von Umgebungsluft.FIG. 6: a view similar to FIG. 5 with grooves connected to one another by openings in the upper side of the housing in order to form openings for sucking in ambient air.
Das in der Zeichnung dargestellte Bodenreinigungsgerät 1 umfaßt ein hauben- oder glockenförmiges, im Querschnitt kreisförmiges Gehäuse 2 mit einer umlaufenden, geschlossenen Seitenwand 3, einer offenen Unterseite 4 und einer verschlossenen, leicht nach oben gewölbten Oberseite 5. Das Gehäuse kann an seiner offenen Unterseite 4 von einem in der Zeichnung nicht dargestellten Bürstenkranz umgeben sein, der den Innenraum am unteren Ende der Seitenwand 3 zur Umgebung hin abschließt.The floor cleaning device 1 shown in the drawing comprises a hood-shaped or bell-shaped housing 2, which is circular in cross-section, with a circumferential, closed side wall 3, an open underside 4 and a closed, slightly upwardly curved upper side 5 surrounded by a brush wreath, not shown in the drawing be, which closes the interior at the lower end of the side wall 3 to the environment.
In der Oberseite 5 ist in deren Mitte eine Lagerbüchse 6 mit einer senkrechten Lagerbohrung 7 angeordnet, in der eine Lagerwelle 8 drehbar gelagert ist. Diese ragt nach unten aus der Lagerbüchse 6 hervor und tritt dort in den Innenraum 9 des Gehäuses 2 ein, in diesem Bereich trägt die Lagerwelle 8 zwei diametral einander gegenüberliegende, radial abstehende Sprüharme 10, die an ihren freien Enden jeweils eine Auslaßdüse 11 tragen, deren Auslaßrichtung in einer parallel zur Seitenwand 3 verlaufenden Ebene schräg nach unten verläuft, und zwar bei gegenüberliegenden Sprüharmen 10 in entgegengesetzter Richtung, so daß durch einen aus der Auslaßdüse 11 austretenden Flüssigkeitsstrahl auf den Sprüharm 10 gleichgerichtete Drehmomente ausgeübt werden, die den Sprüharm 10 um die durch die Lagerwelle 8 gebildete Drehachse in Drehung versetzen. Gleichzeitig wird ein durch die Auslaßdüse 11 abgegebener Flüssigkeitsstrahl durch die offene Unterseite 4 des Gehäuses 2 gegen eine zu reinigende Fläche gerichtet, auf die das Bodenreinigungsgerät 1 aufgesetzt wird.A bearing bush 6 with a vertical bearing bore 7, in which a bearing shaft 8 is rotatably mounted, is arranged in the upper side 5 in the middle thereof. This protrudes downward from the bearing bush 6 and enters the interior 9 of the housing 2, in this area the bearing shaft 8 carries two diametrically opposite, radially projecting spray arms 10, each of which carries an outlet nozzle 11 at its free ends, the Outlet direction in a plane parallel to the side wall 3 runs obliquely downward, and that in opposite spray arms 10 in the opposite direction, so that by a liquid jet emerging from the outlet nozzle 11 on the spray arm 10 rectified torques are exerted, which the spray arm 10 by the bearing shaft 8 formed axis of rotation in rotation. At the same time, a liquid jet discharged through the outlet nozzle 11 is directed through the open underside 4 of the housing 2 against a surface to be cleaned, onto which the floor cleaning device 1 is placed.
Die Sprüharme 10 könnten theoretisch drehfest mit der Lagerwelle 8 verbunden sein, die sich dann mit den Sprüharmen 10 dreht, es ist aber auch möglich, die Lagerwelle 8 drehfest in der Lagerbohrung 7 zu halten und die Sprüharme 10 in geeigneter Weise auf der Lagerwelle 8 verdrehbar zu lagern. In beiden Fällen kann die Lagerwelle 8 zusätzlich höhenverstellbar sein, dies wird jedoch nicht näher ausgeführt. Die Zufuhr der Reinigungsflüssigkeit erfolgt über ein radial in die Lagerbohrung 7 einmündendes Zufuhrrohr 12, welches mit einem Ringraum 13 in Verbindung steht, der einen radial zurückgesetzten Abschnitt 14 der Lagerwelle 8 umgibt. Dieser Ringraum 13 ist durch Dichtungen 15 an beiden gegenüberliegenden Enden gegenüber der Innenwand der Lagerbohrung 7 abgedichtet und steht über eine radiale Bohrung 16 mit einer Innenbohrung 17 in Verbindung, die ihrerseits über Längsbohrungen 18 in den Sprüharmen 10 mit den Auslaßdüsen 11 verbunden ist.The spray arms 10 could theoretically be connected in a rotationally fixed manner to the bearing shaft 8, which then rotates with the spray arms 10, but it is also possible to hold the bearing shaft 8 in a rotationally fixed manner in the bearing bore 7 and to rotate the spray arms 10 in a suitable manner on the bearing shaft 8 to store. In both cases, the bearing shaft 8 can also be adjustable in height, but this is not explained in more detail. The cleaning liquid is supplied via a feed pipe 12 which opens radially into the bearing bore 7 and which is connected to an annular space 13 which surrounds a radially recessed section 14 of the bearing shaft 8. This annular space 13 is sealed by seals 15 at both opposite ends relative to the inner wall of the bearing bore 7 and is connected via a radial bore 16 to an inner bore 17, which in turn is connected to the outlet nozzles 11 via longitudinal bores 18 in the spray arms 10.
Die Oberseite 5 des Gehäuses 2 ist gerippt ausgebildet und weist dadurch eine Vielzahl von parallel zueinander verlaufenden, unmittelbar nebeneinanderliegenden, wechselweise nach außen und nach innen offenen Nuten 19 auf, die parallel zu dem Zufuhrrohr 12 verlaufen und geradlinig ausgebildet sind (Figur 2). Diese Nuten 19 sind durch Trennwände 20 voneinander getrennt, die jeweils die Seitenflächen der Nuten 19 ausbilden.The top 5 of the housing 2 is ribbed and thus has a plurality of mutually parallel, immediately adjacent, alternately outwardly and inwardly open grooves 19 which are parallel to the feed pipe 12 and are rectilinear (Figure 2). These grooves 19 are separated from one another by partitions 20, which each form the side faces of the grooves 19.
In Teilbereichen der Oberseite 5 sind in den Trennwänden 20 Öffnungen 22 vorgesehen, die jeweils eine nach außen weisende Nut 19 und die benachbarte nach innen weisende Nut 19 miteinander verbinden und somit einen Strömungsweg ausbilden, durch den Umgebungsluft in den Innenraum 9 des Gehäuses 2 gelangen kann (Figur 6). In anderen Teilbereichen 23 der Oberseite 5 fehlen derartige Öffnungen 22, in diesen Teilbereichen 23 trennen also die Trennwände 20 benachbarte Nuten 19 vollständig voneinander, so daß in diesen Teilbereichen 23 keine die Ansaugung von Umgebungsluft ermöglichenden Strömungswege vorhanden sind (Figur 5). Die Teilbereiche 21 und 23 werden jeweils durch aneinander anschließende Kreissektoren gebildet, die sich zwischen der Lagerbüchse 6 einerseits und der Seitenwand 3 andererseits erstrecken und die einander abwechseln, der Öffnungswinkel eines solchen sektorförmigen Teilbereiches beträgt bei dem dargestellten Ausführungsbeispiel 30°.In partial areas of the top 5, openings 22 are provided in the partition walls 20, each of which connects an outwardly facing groove 19 and the adjacent inwardly facing groove 19 and thus forms a flow path through which ambient air can reach the interior 9 of the housing 2 (Figure 6). Such openings 22 are missing in other partial areas 23 of the upper side 5, so in these partial areas 23 the partition walls 20 completely separate adjacent grooves 19 from one another, so that in these partial areas 23 there are no flow paths which allow the suction of ambient air (FIG. 5). The sections 21 and 23 are each formed by adjacent circular sectors which extend between the bearing bush 6 on the one hand and the side wall 3 on the other and which alternate with one another, the opening angle of such a sector-shaped section is 30 ° in the exemplary embodiment shown.
Im Innenraum 9 ist auf einem die Lagerbüchse 6 konzentrisch umgebenden, gegebenenfalls einteilig mit der Lagerbüchse 6 ausgebildeten Lagerring 24 eine Verschlußplatte 25 verdrehbar gelagert, die sich dicht an die Innenwand der Oberseite 5 anlegt und diese praktisch vollständig überdeckt. In dieser Verschlußplatte 25 befinden sich sek- torenförmige Ausschnitte 26 mit einem Öffnungswinkel, der dem Öffnungswinkel der Teilbereiche 21 und 23 entspricht, diese Ausschnitte 26 sind durch geschlossene Teilbereiche 27 voneinander getrennt, die sich ebenfalls über einen Öffnungswinkel von etwa 30° erstrecken. Es wechseln sich also in der Verschlußplatte 25 Ausschnitte 26 und geschlossene Teilbereiche 27 ab, wobei diese so angeordnet sind, daß die Ausschnitte 26 je nach Winkelstellung der Verschlußplatte 25 auf dem Lagerring 24 entweder mit den offenen Teilbereichen 21 in der Oberseite 5 zur Deckung kommen oder mit den verschlossenen Teilbereichen 23, außerdem ist jede beliebige Zwischenstellung möglich. Dadurch ist es möglich, wahlweise die offenen Teilbereiche 21 der Oberseite 5 vollständig oder teilweise zu verschließen. Um in dieser Weise die Verschlußplatte 25 in verschiedene Winkelstellungen verdrehen zu können, trägt diese an ihrer Oberseite einen Stift 28, der durch einen Umfangsschlitz 29 in der Oberseite 5 hervorsteht und als Handhabungselement dient. Die Sprüharme 10 tragen flügeiförmige Verbreiterungen 30, die bei Rotationen der Sprüharme nach Art eines Propellers oder Ventilators einen Luftstrom erzeugen, der in den offenen Teilbereichen 21 durch die Öffnungen 22 hindurch Umgebungsluft in den Innenraum 9 lenkt und diese Umgebungsluft dann durch die offene Unterseite 4 des Gehäuses 2 wieder abgibt. Dadurch bildet sich ein Luftpolster im Bereich des Innenraumes 9, durch den das Bodenreinigungsgerät 1 im Abstand von der zu reinigenden Fläche gehalten wird.In the interior 9, a locking plate 25 is rotatably mounted on a bearing ring 24 concentrically surrounding the bearing bush 6, optionally formed in one piece with the bearing bush 6, which bears tightly against the inner wall of the upper side 5 and covers it practically completely. In this closure plate 25 there are sector-shaped cutouts 26 with an opening angle which corresponds to the opening angle of the partial areas 21 and 23; these cutouts 26 are separated from one another by closed partial areas 27 which also extend over an opening angle of approximately 30 °. So there are 25 cutouts 26 and closed sections 27 alternating in the closure plate, these being arranged such that the cutouts 26 either come into congruence with the open sections 21 in the top 5 or, depending on the angular position of the closure plate 25 on the bearing ring 24 with the closed partial areas 23, and any intermediate position is also possible. This makes it possible to either completely or partially close the open partial areas 21 of the top 5. In order to be able to turn the closure plate 25 into different angular positions in this way, it carries on its top a pin 28 which projects through a circumferential slot 29 in the top 5 and serves as a handling element. The spray arms 10 carry wing-shaped widenings 30 which, when the spray arms rotate in the manner of a propeller or fan, produce an air flow which directs ambient air into the interior 9 through the openings 22 through the openings 22 and then this ambient air through the open underside 4 of the Releases housing 2 again. This forms an air cushion in the area of the interior 9, through which the floor cleaning device 1 is kept at a distance from the surface to be cleaned.
Dieser Luftzustrom kann dadurch gesteuert werden, daß über den Stift 28 die Verschlußplatte 25 in verschiedene Winkelstellungen gebracht wird, in der sie die offenen Teilbereiche 21 mehr oder weniger abdeckt und dadurch die für den Luftstrom zur Verfügung stehenden Einströmquerschnitte verändert. This air inflow can be controlled in that the closure plate 25 is brought into different angular positions by means of the pin 28, in which it covers the open partial areas 21 more or less and thereby changes the inflow cross-sections available for the air flow.

Claims

P A T E N T A N S P R Ü C H EP A T E N T A N S P R U C H E
Bodenreinigungsgerät (1) mit einem haubenformigen, zu seiner Unterseite (4) hin offenen, seitlich und an seiner Oberseite (5) abgeschlossenen Gehäuse (2) und einem in diesem um eine senkrechte Achse drehbaren Sprüharm(lO), der mindestens einen zur offenen Unterseite (4) des Gehäuses (2) hin gerichteten Auslaß für ein Reinigungsmedium aufweist, wobei in der Oberseite (5) des Gehäuses (2) mindestens eine Durchbrechung angeordnet ist, durch die Luft aus der Umgebung in den Innenraum (9) des Gehäuses (2) angesaugt wird, dadurch gekennzeichnet, daß die Durchbrechungen (19, 22) völlig oder teilweise verschließbar sind.Floor cleaning device (1) with a hood-shaped housing (2) which is open on its underside (4), closed at the side and on its top (5), and a spray arm (10) which can be rotated about a vertical axis and which has at least one towards the open underside (4) of the housing (2) has an outlet for a cleaning medium, at least one opening being arranged in the top (5) of the housing (2) through which air from the environment into the interior (9) of the housing (2 ) is sucked in, characterized in that the openings (19, 22) can be completely or partially closed.
Bodenreinigungsgerät nach Anspruch 1, dadurch gekennzeichnet, daß zum Verschluß der Durchbrechungen (19, 22) ein Verschlußkörper (25) an dem Gehäuse Floor cleaning device according to claim 1, characterized in that a closure body (25) on the housing is used to close the openings (19, 22).
(2) gelagert ist, der längs der Oberseite (5) den Querschnitt der Durchbrechungen (19, 22) mehr oder weniger überdeckend zwischen einer die Durchbrechungen freigebenden Offenstellung und einer diese verschlies- senden Schließstellung verschiebbar ist. (2) is mounted, which can be moved along the top (5), more or less covering the cross section of the openings (19, 22), between an open position that releases the openings and a closed position that closes them.
3. Bodenreinigungsgerät nach Anspruch 2, dadurch gekennzeichnet, daß der Verschlußkörper (25) an der Innenseite der Oberseite (5) angeordnet ist.3. Floor cleaning device according to claim 2, characterized in that the closure body (25) is arranged on the inside of the top (5).
4. Bodenreinigungsgerät nach einem der Ansprüche 2 oder 3, dadurch gekennzeichnet, daß der Verschlußkörper (25) mindestens eine Durchbrechung (26) aufweist, die in Öffnungsstellung des Verschlußkörpers (25) mindestens eine Durchbrechung (19, 22) des Gehäuses (2) überdeckt und in der Schließstellung seitlich gegenüber dieser bzw. diesen versetzt ist.4. Floor cleaning device according to one of claims 2 or 3, characterized in that the closure body (25) has at least one opening (26) which covers at least one opening (19, 22) in the housing (2) in the open position of the closure body (25). and in the closed position is offset laterally relative to this or these.
Bodenreinigungsgerät nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß in der Oberseite Floor cleaning device according to one of the preceding claims, characterized in that in the top
(5) des Gehäuses (2) eine Vielzahl von Durchbrechungen (19, 22) angeordnet sind.(5) of the housing (2) a plurality of openings (19, 22) are arranged.
6. Bodenreinigungsgerät nach Anspruch 5, dadurch gekennzeichnet, daß die Durchbrechungen (19, 22) in Gruppen angeordnet sind, zwischen denen durchbrechungsfreie Bereiche verbleiben.6. Floor cleaning device according to claim 5, characterized in that the openings (19, 22) are arranged in groups, between which areas without openings remain.
Bodenreinigungsgerät nach einem der Ansprüche 5 oder 6, dadurch gekennzeichnet, daß die Durchbrechungen (19, 22) um die Drehachse des Sprüharmes ( 10) in der Oberseite (5) des Gehäuses (2) verteilt sind. Floor cleaning device according to one of claims 5 or 6, characterized in that the openings (19, 22) are distributed around the axis of rotation of the spray arm (10) in the top (5) of the housing (2).
8. Bodenreinigungsgerät nach einem der Ansprüche 2 bis 7, dadurch gekennzeichnet, daß der Verschlußkörper (25) drehbar an der Oberseite (5) anliegt.8. Floor cleaning device according to one of claims 2 to 7, characterized in that the closure body (25) rotatably rests on the top (5).
Bodenreinigungsgerät nach Anspruch 8, dadurch gekennzeichnet, daß die Drehachse des Verschlußkörpers (25) mit der Drehachse des Sprüharmes (10) zusammenfällt.Floor cleaning device according to claim 8, characterized in that the axis of rotation of the closure body (25) coincides with the axis of rotation of the spray arm (10).
10. Bodenreinigungsgerät nach Anspruch 9, dadurch gekennzeichnet, daß sich der Verschlußkörper (25) im wesentlichen über die gesamte Oberseite (5) des Gehäuses (2) erstreckt.10. Floor cleaning device according to claim 9, characterized in that the closure body (25) extends essentially over the entire top (5) of the housing (2).
11. Bodenreinigungsgerät nach einem der Ansprüche 2 bis 10, dadurch gekennzeichnet, daß der Verschlußkörper (25) platten- förmig ausgebildet ist.11. Floor cleaning device according to one of claims 2 to 10, characterized in that the closure body (25) is plate-shaped.
12. Bodenreinigungsgerät nach einem der Ansprüche 2 bis 11, dadurch gekennzeichnet, daß der Verschlußkörper (25) durch ein an der Außenseite des Gehäuses (2) angeordnetes Handhabungselement (28) zwischen seiner Öffnungsstellung und seiner Schließstellung verschiebbar ist. 12. Floor cleaning device according to one of claims 2 to 11, characterized in that the closure body (25) can be moved between its open position and its closed position by a handling element (28) arranged on the outside of the housing (2).
13. Bodenreinigungsgerät nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß die Durchbrechungen (19, 22) labyrinthförmig ausgebildet sind.13. Floor cleaning device according to one of the preceding claims, characterized in that the openings (19, 22) are labyrinth-shaped.
14. Bodenreinigungsgerät nach Anspruch 13, dadurch gekennzeichnet, daß die Oberseite (5) gerippt ist, so daß abwechselnd nach außen und nach innen offene Nuten (19) nebeneinanderliegen, und daß zur Ausbildung einer Durchbrechung in der Oberseite (5) eine Öffnung (22) in der Trennwand (20) zwischen benachbarten Nuten (19) vorgesehen ist.14. Floor cleaning device according to claim 13, characterized in that the top (5) is ribbed so that grooves (19) which are open alternately to the outside and inwards lie next to one another, and that an opening (22) is created to form an opening in the top (5). ) is provided in the partition (20) between adjacent grooves (19).
15. Bodenreinigungsgerät nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß der Sprüharm (10) mindestens einen flügeiförmigen Abschnitt (30) aufweist.15. Floor cleaning device according to one of the preceding claims, characterized in that the spray arm (10) has at least one wing-shaped section (30).
16. Bodenreinigungsgerät nach Anspruch 15, dadurch gekennzeichnet, daß der Sprüharm (10) zwei zu beiden Seiten der Drehachse diametral gegenüberliegende flügeiförmige Abschnitte (30) aufweist. 16. Floor cleaning device according to claim 15, characterized in that the spray arm (10) has two wing-shaped sections (30) which are diametrically opposite on both sides of the axis of rotation.
EP02758220A 2002-02-14 2002-06-07 Floor cleaning device Expired - Lifetime EP1474029B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10206014 2002-02-14
DE10206014A DE10206014A1 (en) 2002-02-14 2002-02-14 Floor cleaning device
PCT/EP2002/006248 WO2003068045A1 (en) 2002-02-14 2002-06-07 Floor cleaning device

Publications (2)

Publication Number Publication Date
EP1474029A1 true EP1474029A1 (en) 2004-11-10
EP1474029B1 EP1474029B1 (en) 2006-04-05

Family

ID=27674617

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02758220A Expired - Lifetime EP1474029B1 (en) 2002-02-14 2002-06-07 Floor cleaning device

Country Status (6)

Country Link
EP (1) EP1474029B1 (en)
AT (1) ATE322214T1 (en)
AU (1) AU2002325231A1 (en)
DE (2) DE10206014A1 (en)
ES (1) ES2261710T3 (en)
WO (1) WO2003068045A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004063201A1 (en) * 2004-12-23 2006-07-06 Alfred Kärcher Gmbh & Co. Kg Surface cleaning device
EP2255896A3 (en) 2009-05-28 2013-01-16 Producteers Aps Cleaning apparatus

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2548432C2 (en) * 1974-10-30 1986-10-02 Bernard Eaton Salisbury Wiltshire Hart Device for generating a rotating spray jet directed against a surface
GB8711306D0 (en) * 1987-05-13 1987-06-17 Harben Systems Ltd Cleaning apparatus
GB2219490A (en) * 1988-06-07 1989-12-13 Btr Plc Floor cleaning machine
US5711051A (en) * 1996-04-01 1998-01-27 Professional Chemicals Corporation Hard surface cleaning appliance
US5970574A (en) * 1997-04-24 1999-10-26 Hydrochem Industrial Services, Inc. Apparatus and method for cleaning surfaces by removing and containing waste
US6370728B1 (en) * 2000-07-27 2002-04-16 George M. Burns Cleaning appliance

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03068045A1 *

Also Published As

Publication number Publication date
DE50206344D1 (en) 2006-05-18
AU2002325231A1 (en) 2003-09-04
EP1474029B1 (en) 2006-04-05
ATE322214T1 (en) 2006-04-15
WO2003068045A1 (en) 2003-08-21
DE10206014A1 (en) 2003-09-04
ES2261710T3 (en) 2006-11-16

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