[go: up one dir, main page]

EP0593521B1 - Mobile floor cleaning machine - Google Patents

Mobile floor cleaning machine Download PDF

Info

Publication number
EP0593521B1
EP0593521B1 EP92912779A EP92912779A EP0593521B1 EP 0593521 B1 EP0593521 B1 EP 0593521B1 EP 92912779 A EP92912779 A EP 92912779A EP 92912779 A EP92912779 A EP 92912779A EP 0593521 B1 EP0593521 B1 EP 0593521B1
Authority
EP
European Patent Office
Prior art keywords
fresh
liquid compartment
liquid
compartment
soiled
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
Application number
EP92912779A
Other languages
German (de)
French (fr)
Other versions
EP0593521A1 (en
Inventor
Franz Kresse
Rainer Osberghaus
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.)
Henkel AG and Co KGaA
Original Assignee
Henkel AG and Co KGaA
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 Henkel AG and Co KGaA filed Critical Henkel AG and Co KGaA
Publication of EP0593521A1 publication Critical patent/EP0593521A1/en
Application granted granted Critical
Publication of EP0593521B1 publication Critical patent/EP0593521B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • 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
    • A47L11/4027—Filtering or separating contaminants or debris
    • 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
    • A47L11/28—Floor-scrubbing machines, motor-driven
    • A47L11/282—Floor-scrubbing machines, motor-driven having rotary tools
    • A47L11/283—Floor-scrubbing machines, motor-driven 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
    • A47L11/4013—Contaminants collecting devices, i.e. hoppers, tanks or the like
    • A47L11/4016—Contaminants collecting devices, i.e. hoppers, tanks or the like specially adapted for collecting fluids
    • A47L11/4019—Fill level sensors; Security means to prevent overflow, e.g. float valves

Definitions

  • the invention relates to a mobile floor cleaning machine with integrated fresh and dirty liquid compartments, with a cleaning rotor to be supplied from the fresh liquid compartment and with at least one suction nozzle conveying into the dirty liquid compartment, the fresh and dirty liquid compartment having a fixed passage that allows liquid to pass from the dirty into the fresh liquid compartment Partition are separated.
  • Such a mobile floor cleaning machine is known from DE-OS 37 08 087 by the applicant.
  • cleaning liquid mixed with cleaning concentrate is sprayed from the separate fresh liquid compartment onto the floor to be treated via the rotor.
  • the rotor is used to scrub.
  • a beam-like water suction nozzle following the rotor when the machine is pushed forward serves to suck up the dirty water still remaining after scrubbing, so that the floor can be scrubbed thoroughly in one operation and at the same time wiped dry to a certain extent, ie can be vacuumed off.
  • the known cleaning machine has its own drive with its own energy supply, i.e. with an on-board battery so that it can be operated independently of mains connections.
  • the radius of action of the known automatic cleaning machine is limited by the size of the fresh liquid compartment.
  • the intermediate wall between the fresh and dirty liquid compartment be made of filter material, so that the sucked-back dirty liquid can pass through the intermediate wall into the fresh liquid compartment, whereby the fresh liquid compartment is constantly refilled.
  • this solution is unsatisfactory, since the intermediate wall designed as a filter clogs up very quickly due to the dirt particles, so that not enough dirty liquid gets through the filter into the fresh liquid compartment.
  • EP-A-224 055 discloses an automatic floor cleaning machine which has a fixed partition which has a compensation opening in its lower region.
  • the two compartments of the floor cleaning machine are connected by an overflow pipe, the ends of which are led through the bottom of the respective compartment.
  • EP-A-185 310 discloses a floor cleaning machine whose fixed partition is provided only with a pressure equalization opening in its upper area.
  • the object of the invention is therefore to improve the cleaning machines mentioned at the outset so that they are environmentally compatible Way has a significantly increased radius of action.
  • a mobile floor cleaning machine of the type described in the introduction in that a pressure equalization opening is provided in the upper region of the intermediate wall, and in that an overflow pipe penetrating the intermediate wall is arranged between the fresh and dirty liquid compartment, the inlet opening of which above the floor area in the dirty liquid compartment and whose outlet opening is arranged in the area of the bottom surface of the fresh liquid compartment.
  • the dirty water returned to the dirty liquid compartment initially sediments there, i.e. the solid dirt particles settle on the bottom surface of the dirty liquid compartment, while the dirty water, which is cloudy but not loaded with dirt particles, enters the fresh liquid compartment through the overflow inlet opening arranged at a sufficient height, if the corresponding fill levels both compartments.
  • the liquid flow from the dirt into the fresh liquid compartment depends only on the two fill levels, but not on the pressure prevailing in the container, because of the pressure equalization opening is the same pressure in both compartments. Almost no water is lost during the cleaning process, so that the floor cleaning machine has a very large operating radius.
  • a separating plate separating two regions is arranged in the dirty liquid compartment, the dirty water inlet opening being arranged in one region and the overflow inlet opening being arranged in the other region.
  • the partition plate is arranged approximately diagonally in the dirty liquid compartment and / or if the partition plate has a rough surface. As a result of these measures, the sucked-back dirty water first reaches one area of the dirty liquid compartment, the dirt already sedimenting on the separating plate, in particular due to the rough surface thereof, and there is also no mixing with the already sedimented dirty water in the other area of the dirty liquid compartment.
  • a filter is arranged at the fresh liquid outlet of the fresh liquid compartment. This has the advantage that any dirt particles that have nevertheless entered the fresh liquid compartment cannot escape from it and impair the cleaning process.
  • the filter is designed as a filter cylinder with an exchangeably arranged filter sock.
  • This filter cylinder has openings in the jacket which are covered by the filter sock.
  • the filter is arranged so that it is always below the liquid surface. Due to the movement of the cleaning machine and the associated movement of the water in the fresh liquid compartment, the filter cylinder is flushed again and again by the sloshing movement of the water, so that a blockage is largely avoided.
  • a vacuum monitor is arranged between the filter and the pump connected to the fresh liquid outlet line. Then occurs due If the filter becomes clogged with no or too little liquid through the filter, a corresponding negative pressure is established behind the filter, which is sensed by the negative pressure monitor. This vacuum monitor is then connected to a corresponding display (optically and / or acoustically) so that the operating personnel can change or clean the filter sock accordingly.
  • the mobile floor cleaning machine shown in FIG. 1 has a carriage, generally designated 1, with castors 2 and a handlebar 3 with an operating device (not shown). A large part of the interior of the carriage 1 is occupied by a liquid tank, generally designated 4, which can be closed with a cover 5.
  • the liquid tank 4 consists of a fresh water compartment 6 and a dirty water compartment 7, the two compartments being separated from one another by a fixed partition 8.
  • a cleaning rotor 9 On the underside of the carriage 1, a cleaning rotor 9 is shown, which can be driven by an invisible drive.
  • a plurality of suction nozzles 10 are provided, which are arranged on a suction bar 11.
  • a suction hose 12 with a connector 13 is connected to the suction bar 11 and opens into the dirty liquid compartment 7 of the liquid tank 4.
  • a pressure equalization opening 14 is provided in the intermediate wall 8 between the fresh and dirty liquid compartment 6, 7 in the upper region of the tank 4 (FIG. 2), which, when the naturally aspirated engine is not shown, is switched on Suction of the dirty water through the suction nozzles 10 ensures a uniform vacuum in the liquid tank 4.
  • the dirty liquid compartment 7 is divided into two areas by a diagonally arranged partition plate 15.
  • the partition plate 15 is only hinted at the other parts still recognizable in the tank.
  • the dirty water inlet opening (socket 13) is arranged in the upper area 16 of the wetting liquid compartment 7, so that the dirty water first enters the upper area 16. 2, a float 17 and a filter screen 18 are also shown in the upper region 16 of the dirty liquid compartment 7.
  • an intermediate wall 8 penetrating overflow pipe 19 which extends substantially parallel to the intermediate wall 8 and comprises two 90 o angled orifice nozzle, an inlet opening 20 and an outlet opening 21.
  • the inlet opening 20 is in the soiled liquid compartment 7 arranged above the bottom surface of the same, but below the diagonal separating plate 15 in the lower region 22 of the dirty liquid compartment 7.
  • the outlet opening 21, on the other hand, is arranged in the region of the bottom surface of the fresh liquid compartment 6.
  • a floating suction funnel 24 is arranged in the fresh liquid compartment 6 in the fresh liquid compartment 6 .
  • This suction funnel 24 is provided with a filter which is designed as a filter cylinder 25.
  • This filter cylinder 25 has a closed cover and bottom, but in the latter there is an outlet spout 26.
  • the jacket 27 of the filter cylinder 25 is heavily perforated, which is not shown in the drawing.
  • a filtering stocking 28 is drawn over the cylinder 25 and is preferably made of synthetic fabric with a corresponding mesh size (30 to 1000 ⁇ m).
  • a vacuum monitor 30 is connected via a T-piece, which is also only in principle in FIG. 3 is shown.
  • the liquid tank 4 When the automatic cleaning machine is started up, the liquid tank 4 is completely filled, ie both liquid compartments 6, 7. In the example, the tank 4 has a volume of approximately 60 l. If the naturally aspirated engine (not shown) is put into operation, a uniform negative pressure builds up in both liquid compartments 6, 7 due to the pressure compensation opening 14. The dirty water returned through the suction nozzles 10 passes through the suction hose 12 and the nozzle 13 or dirty water inlet into the upper region 16 of the dirty liquid compartment 7. The dirty liquor is now initially in the upper region 16 and does not yet come into contact with the one below the separating plate 15 liquid, so that there is no mixing with this partially clarified solution. The one in Solid dirt contained in dirty water can settle on the surface of the separating plate 15, which is preferably ribbed.
  • the liquor must pass through in order to reach the other area 22 of the dirty liquid compartment 7.
  • a sedimentation process takes place, i.e. the solid dirt particles settle on the bottom of the liquid compartment 7.
  • the partially clarified liquid which is no longer loaded with solids, passes through the inlet opening 20 of the overflow pipe 19, which is located approximately at the 40 l mark. This liquid enters the fresh water compartment 6 through the overflow pipe in the bottom area thereof, so that the pre-clarified liquor from the dirty water compartment 7 is directed opposite to the filter cylinder 25 to the bottom of the fresh water compartment 6.
  • the pre-clarified liquor which has entered the fresh liquid compartment 6 is discharged by the drain pump 29 via the filter cylinder 25 sucked in and pumped via the cleaning rotor 9 onto the cleaning surface.
  • the filter cylinder 25 is arranged so that it is constantly washed around in the liquid compartment 6. Due to the slight sloshing movements while driving, the filtering stocking 28 is flushed out again and again so that it does not clog up so quickly.

Landscapes

  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Filtration Of Liquid (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)

Abstract

An improved mobile cleaning apparatus is provided having an increased cleaning radius consisting of a movable carriage with integrated fresh and soiled liquid compartments contained therein which are separated by a fixed partition, a cleaning rotor is connected to the fresh liquid compartment at one end of the housing and at least one suction nozzle feeding into the soiled liquid compartment is also provided adjacent to the rotor. A pressure equalizing opening is provided in the upper part of the fixed partition. The fixed partition is also adapted to allow an overflow pipe to pass therethrough having an inlet opening situated in the soiled liquid compartment, and an outlet opening situated in the fresh liquid compartment.

Description

Die Erfindung betrifft einen fahrbaren Bodenreinigungsautomaten mit integrierten Frisch- und Schmutzflüssigkeitsabteilen, mit einem aus dem Frischflüssigkeitsabteil zu versorgenden Reinigungsrotor sowie mit mindestens einer in das Schmutzflüssigkeitsabteil fördernden Saugdüse, wobei das Frisch- und Schmutzflüssigkeitsabteil durch eine feste, einen Flüssigkeitsdurchtritt vom Schmutz- in das Frischflüssigkeitsabteil ermöglichende Zwischenwand voneinander getrennt sind.The invention relates to a mobile floor cleaning machine with integrated fresh and dirty liquid compartments, with a cleaning rotor to be supplied from the fresh liquid compartment and with at least one suction nozzle conveying into the dirty liquid compartment, the fresh and dirty liquid compartment having a fixed passage that allows liquid to pass from the dirty into the fresh liquid compartment Partition are separated.

Ein solcher fahrbarer Bodenreinigungsautomat ist aus der DE-OS 37 08 087 der Anmelderin bekannt. Bei diesem Bodenreinigungsautomaten wird aus einem gesonderten Frischflüssigkeitsabteil mit Reinigungskonzentrat versetzte Reinigungsflüssigkeit über den Rotor auf den zu behandelnden Fußboden aufgespritzt. Zugleich wird mit Hilfe des Rotors gescheuert. Eine beim Vorwärtsschieben des Automaten dem Rotor nachfolgende balkenartige Wassersaugdüse dient dazu, das nach dem Scheuern noch verbleibende Schmutzwasser wieder aufzusaugen, so daß der Boden in einem Arbeitsgang gründlich gescheuert und gleichzeitig gewissermaßen trockengewischt, d.h. abgesaugt werden kann.Such a mobile floor cleaning machine is known from DE-OS 37 08 087 by the applicant. In this floor cleaning machine, cleaning liquid mixed with cleaning concentrate is sprayed from the separate fresh liquid compartment onto the floor to be treated via the rotor. At the same time, the rotor is used to scrub. A beam-like water suction nozzle following the rotor when the machine is pushed forward serves to suck up the dirty water still remaining after scrubbing, so that the floor can be scrubbed thoroughly in one operation and at the same time wiped dry to a certain extent, ie can be vacuumed off.

Der bekannte Reinigungsautomat besitzt einen eigenen Antrieb mit eigener Energieversorgung, d.h. mit einer mitgeführten Batterie, so daß er unabhängig von Netzanschlüssen betrieben werden kann. Der Aktionsradius des bekannten Reinigungsautomaten ist jedoch durch die Größe des Frischflüssigkeitsabteils begrenzt. Zwar ist nach der bekannten Lösung auch vorgesehen, die Zwischenwand zwischen dem Frisch- und Schmutzflüssigkeitsabteil aus Filtermaterial auszubilden, so daß die rückgesaugte Schmutzflüssigkeit durch die Zwischenwand in das Frischflüssigkeitsabteil treten kann, wodurch das Frischflüssigkeitsabteil ständig neu befüllt wird. In der Praxis hat sich jedoch herausgestellt, daß diese Lösung nicht zufriedenstellend ist, da die als Filter ausgebildete Zwischenwand aufgrund der Schmutzpartikel sehr schnell verstopft, so daß nicht ausreichend viel Schmutzflüssigkeit durch den Filter in das Frischflüssigkeitsabteil gelangt.The known cleaning machine has its own drive with its own energy supply, i.e. with an on-board battery so that it can be operated independently of mains connections. However, the radius of action of the known automatic cleaning machine is limited by the size of the fresh liquid compartment. According to the known solution, it is also provided that the intermediate wall between the fresh and dirty liquid compartment be made of filter material, so that the sucked-back dirty liquid can pass through the intermediate wall into the fresh liquid compartment, whereby the fresh liquid compartment is constantly refilled. In practice, however, it has been found that this solution is unsatisfactory, since the intermediate wall designed as a filter clogs up very quickly due to the dirt particles, so that not enough dirty liquid gets through the filter into the fresh liquid compartment.

Es ist auch bekannt, das rückgesaugte Schmutzwasser im Reinigungsautomaten selbst chemisch zu reinigen. Diese Lösung ist jedoch nicht befriedigend, da dadurch die Umwelt zusätzlich belastet wird und außerdem auch die noch wirksame Reinigungsflotte neutralisiert werden kann, was ebenfalls unerwünscht ist.It is also known to chemically clean the sucked-back dirty water in the cleaning machine itself. However, this solution is unsatisfactory since it places an additional burden on the environment and, moreover, the still effective cleaning liquor can be neutralized, which is also undesirable.

EP-A-224 055 offenbart einen Bodenreinigungsautomat, der eine feste Zwischenwand aufweist, die eine Ausgleichsöffnung in seinem unteren Bereich aufweist. Die beiden Abteile des Bodenreinigungsautomats sind durch einen Überlaufrohr verbunden, dessen Enden durch den Boden des jeweiligen Abteils geführt sind.EP-A-224 055 discloses an automatic floor cleaning machine which has a fixed partition which has a compensation opening in its lower region. The two compartments of the floor cleaning machine are connected by an overflow pipe, the ends of which are led through the bottom of the respective compartment.

EP-A-185 310 offenbart eine Bodenreinigungsmaschine, deren feste Zwischenwand nur mit einer Druckausgleichöffnung in ihrem oberen Bereich versehen ist.EP-A-185 310 discloses a floor cleaning machine whose fixed partition is provided only with a pressure equalization opening in its upper area.

Aufgabe der Erfindung ist daher den eingangs genannten Reinigungsautomaten so zu verbessern, daß er auf umweltverträgliche Weise einen wesentlich erhöhten Aktionsradius aufweist.The object of the invention is therefore to improve the cleaning machines mentioned at the outset so that they are environmentally compatible Way has a significantly increased radius of action.

Diese Aufgabe wird mit einem fahrbaren Bodenreinigungsautomaten der eingangs bezeichneten Art erfindungsgemäß dadurch gelöst, daß im oberen Bereich der Zwischenwand eine Druckausgleichsöffnung vorgesehen ist, und daß zwischen dem Frisch- und Schmutzflüssigkeitsabteil ein die Zwischenwand durchdringendes Überlaufrohr angeordnet ist, dessen Eintrittsöffnung oberhalb der Bodenfläche im Schmutzflüssigkeitsabteil und dessen Austrittsöffnung im Bereich der Bodenfläche des Frischflüssigkeitsabteils angeordnet ist.This object is achieved with a mobile floor cleaning machine of the type described in the introduction in that a pressure equalization opening is provided in the upper region of the intermediate wall, and in that an overflow pipe penetrating the intermediate wall is arranged between the fresh and dirty liquid compartment, the inlet opening of which above the floor area in the dirty liquid compartment and whose outlet opening is arranged in the area of the bottom surface of the fresh liquid compartment.

Mit dieser Ausbildung ist es auf einfache Weise möglich, ohne den Einsatz von umweltunverträglichen Chemikalien den Aktionsradius eines derartigen Bodenreinigungsautomaten deutlich zu verbessern. Das in das Schmutzflüssigkeitsabteil rückgeführte Schmutzwasser sedimentiert dort zunächst, d.h. die festen Schmutzpartikel setzen sich an der Bodenfläche des Schmutzflüssigkeitsabteils ab, während das zwar trübe, aber nicht mit Schmutzpartikeln beladene Schmutzwasser durch die in ausreichender Höhe angeordnete Überlaufeintrittsöffnung in das Frischflüssigkeitsabteil eintritt, wenn entsprechende Füllstände der beiden Abteile vorliegen. Dabei ist der Flüssigkeitsfluß vom Schmutz- ins Frischflüssigkeitsabteil nur von den beiden Füllständen abhängig, nicht jedoch vom im Behälter herrschenden Druck, da aufgrund der Druckausgleichsöffnung in beiden Abteilen derselbe Druck herrscht. Beim Reinigungsvorgang geht somit fast kein Wasser verloren, so daß der Bodenreinigungsautomat einen ausgesprochen großen Aktionsradius aufweist.With this training, it is possible in a simple manner to significantly improve the range of action of such floor cleaning machines without the use of environmentally incompatible chemicals. The dirty water returned to the dirty liquid compartment initially sediments there, i.e. the solid dirt particles settle on the bottom surface of the dirty liquid compartment, while the dirty water, which is cloudy but not loaded with dirt particles, enters the fresh liquid compartment through the overflow inlet opening arranged at a sufficient height, if the corresponding fill levels both compartments. The liquid flow from the dirt into the fresh liquid compartment depends only on the two fill levels, but not on the pressure prevailing in the container, because of the pressure equalization opening is the same pressure in both compartments. Almost no water is lost during the cleaning process, so that the floor cleaning machine has a very large operating radius.

In vorteilhafter Ausgestaltung der Erfindung ist vorgesehen, daß in Schmutzflüssigkeitsabteil eine zwei Bereiche trennende Trennplatte angeordnet sind, wobei im einen Bereich die Schmutzwassereintrittsöffnung und im anderen Bereich die Überlaufeintrittsöffnung angeordnet ist. Durch diese Ausbildung wird erreicht, daß das rückgesaugte Schmutzwasser sehr langsam in den Bereich der Überlaufeintrittsöffnung gelangt, da es zunächst vom einen Bereich über die Trennplatte in den anderen Bereich fließen muß. Die Schmutzpartikel haben dadurch ausreichend lange Zeit, sich abzusetzen, so daß eine gute Klärung stattfindet und keine Schmutzpartikel in das Frischflüssigkeitsabteil geführt werden.In an advantageous embodiment of the invention it is provided that a separating plate separating two regions is arranged in the dirty liquid compartment, the dirty water inlet opening being arranged in one region and the overflow inlet opening being arranged in the other region. This configuration ensures that the dirty water that is sucked back reaches the area of the overflow inlet opening very slowly, since it must first flow from one area via the separating plate into the other area. As a result, the dirt particles have a sufficient time to settle, so that a good clarification takes place and no dirt particles are led into the fresh liquid compartment.

Dabei ist es besonders zweckmäßig, wenn die Trennplatte etwa diagonal im Schmutzflüssigkeitsabteil angeordnet ist und/oder wenn die Trennplatte eine rauhe Oberfläche aufweist. Durch diese Maßnahmen gelangt das rückgesaugte Schmutzwasser zunächst in den einen Bereich des Schmutzflüssigkeitsabteils, wobei der Schmutz bereits auf der Trennplatte, insbesondere aufgrund der rauhen Oberfläche derselben, sedimentiert, außerdem findet auch keine Vermischung mit dem im anderen Bereich des Schmutzflüssigkeitsabteils befindlichen, schon sedimentierten Schmutzwasser statt.It is particularly expedient if the partition plate is arranged approximately diagonally in the dirty liquid compartment and / or if the partition plate has a rough surface. As a result of these measures, the sucked-back dirty water first reaches one area of the dirty liquid compartment, the dirt already sedimenting on the separating plate, in particular due to the rough surface thereof, and there is also no mixing with the already sedimented dirty water in the other area of the dirty liquid compartment.

Weiterhin ist in vorteilhafter Ausgestaltung der Erfindung vorgesehen, daß am Frischflüssigkeitsaustritt des Frischflüssigkeitsabteils ein Filter angeordnet ist. Dies hat den Vorteil, daß etwaige Schmutzpartikel, die doch in das Frischflüssigkeitsabteil eingetreten sind, nicht aus diesen austreten und den Reinigungsvorgang beeinträchtigen können.Furthermore, it is provided in an advantageous embodiment of the invention that a filter is arranged at the fresh liquid outlet of the fresh liquid compartment. This has the advantage that any dirt particles that have nevertheless entered the fresh liquid compartment cannot escape from it and impair the cleaning process.

Als besonders geeignet hat es sich herausgestellt, wenn der Filter als Filterzylinder mit darauf wechselbar angeordnetem filterstrunpf ausgebildet ist. Dieser Filterzylinder weist Öffnungen am Mantel auf, die durch den Filterstrumpf überdeckt sind. Dabei ist der Filter so angeordnet, daß er sich ständig unterhalb der Flüssigkeitsoberfläche befindet. Durch die Bewegung des Reinigungsautomaten und die damit verbundene Bewegung des Wassers im Frischflüssigkeitsabteil wird der Filterzylinder durch die Schwappbewegung des Wassers immer wieder freigespült, so daß eine Verstopfung weitgehend vermieden wird.It has turned out to be particularly suitable if the filter is designed as a filter cylinder with an exchangeably arranged filter sock. This filter cylinder has openings in the jacket which are covered by the filter sock. The filter is arranged so that it is always below the liquid surface. Due to the movement of the cleaning machine and the associated movement of the water in the fresh liquid compartment, the filter cylinder is flushed again and again by the sloshing movement of the water, so that a blockage is largely avoided.

Um eine Verstopfung des Filterzylinders vollständig zu vermeiden und den zugehörigen Filterstrumpf ggf. auszuwechseln, ist vorgesehen, daß zwischen dem Filter und der an die Frischflüssigkeitsaustrittsleitung angeschlossenen Pumpe ein Unterdruckwächter angeordnet ist. Tritt dann aufgrund der Verstopfung des Filters keine oder zu wenig Flüssigkeit durch den Filter, so stellt sich hinter dem Filter ein entsprechender Unterdruck ein, der von dem Unterdruckwächter wahrgenommen wird. Dieser Unterdruckwächter ist dann mit einer entsprechenden Anzeige (optisch und/oder akustisch) verbunden, so daß das Bedienungspersonal entsprechend den Filterstrumpf wechseln bzw. reinigen kann.In order to completely avoid clogging of the filter cylinder and, if necessary, to replace the associated filter sock, it is provided that a vacuum monitor is arranged between the filter and the pump connected to the fresh liquid outlet line. Then occurs due If the filter becomes clogged with no or too little liquid through the filter, a corresponding negative pressure is established behind the filter, which is sensed by the negative pressure monitor. This vacuum monitor is then connected to a corresponding display (optically and / or acoustically) so that the operating personnel can change or clean the filter sock accordingly.

Die Erfindung ist nachstehend anhand der Zeichnung beispielsweise näher erläutert. Diese zeigt in

Fig. 1
in perspektivischer Darstellung einen fahrbaren Bodenreinigungsautomaten nach der Erfindung,
Fig. 2
ebenfalls in perspektivischer Darstellung teilweise einen Flüssigkeitsbehälter des Bodenreinigungsautomaten mit Frisch- und Schmutzflüssigkeitsabteil und
Fig. 3
in vereinfachter Darstellung einen Filter für den Austritt des Frischflüssigkeitsabteils.
The invention is explained below with reference to the drawing, for example. This shows in
Fig. 1
in perspective a mobile floor cleaning machine according to the invention,
Fig. 2
also partially in perspective a liquid container of the floor cleaning machine with fresh and dirty liquid compartment and
Fig. 3
in a simplified representation, a filter for the exit of the fresh liquid compartment.

Der in Fig. 1 dargestellte fahrbare Bodenreinigungsautomat weist einen insgesamt mit 1 bezeichneten Wagen mit Fahrrollen 2 und einem Lenker 3 mit nicht näher dargestellter Bedienungseinrichtung auf. Einen großen Teil des Inneren des Wagens 1 nimmt ein insgesamt mit 4 bezeichneter Flüssigkeitstank ein, der mit einem Deckel 5 verschließbar ist.The mobile floor cleaning machine shown in FIG. 1 has a carriage, generally designated 1, with castors 2 and a handlebar 3 with an operating device (not shown). A large part of the interior of the carriage 1 is occupied by a liquid tank, generally designated 4, which can be closed with a cover 5.

Der Flüssigkeitstank 4 besteht aus einen Frischwasserabteil 6 und einen Schmutzwasserabteil 7, wobei beide Abteile durch eine feste Zwischenwand 8 voneinander getrennt sind.The liquid tank 4 consists of a fresh water compartment 6 and a dirty water compartment 7, the two compartments being separated from one another by a fixed partition 8.

An der Unterseite des Wagens 1 ist ein Reinigungsrotor 9 dargestellt, der von einem nicht sichtbaren Antrieb angetrieben werden kann. Im rückwärtigen Unterbereich des Wagens, d.h. auf der vom Reinigungsrotor 9 abgewandten Seite der Fahrrollen 2, sind mehrere Saugdüsen 10 vorgesehen, die an einem Saugbalken 11 angeordnet sind. An den Saugbalken 11 ist ein Saugschlauch 12 mit Stutzen 13 angeschlossen, der in das Schmutzflüssigkeitsabteil 7 des Flüssigkeitstanks 4 mündet.On the underside of the carriage 1, a cleaning rotor 9 is shown, which can be driven by an invisible drive. In the rear sub-area of the car, i.e. On the side of the driving rollers 2 facing away from the cleaning rotor 9, a plurality of suction nozzles 10 are provided, which are arranged on a suction bar 11. A suction hose 12 with a connector 13 is connected to the suction bar 11 and opens into the dirty liquid compartment 7 of the liquid tank 4.

Wesentlich für die Erfindung ist die Ausbildung des Flüssigkeitstankes 4. Dabei ist zunächst in der Zwischenwand 8 zwischen Frisch- und Schmutzflüssigkeitsabteil 6,7 im oberen Bereich des Tanks 4 eine Druckausgleichsöffnung 14 vorgesehen (Fig. 2), die bei eingeschaltetem, nicht dargestellten Saugmotor bei Absaugung des Schmutzwassers durch die Saugdüsen 10 einen einheitlichen Unterdruck im Flüssigkeitstank 4 gewährleistet.The design of the liquid tank 4 is essential for the invention. First, a pressure equalization opening 14 is provided in the intermediate wall 8 between the fresh and dirty liquid compartment 6, 7 in the upper region of the tank 4 (FIG. 2), which, when the naturally aspirated engine is not shown, is switched on Suction of the dirty water through the suction nozzles 10 ensures a uniform vacuum in the liquid tank 4.

Das Schmutzflüssigkeitsabteil 7 ist durch eine diagonal angeordnete Trennplatte 15 in zwei Bereiche unterteilt. Dabei ist die Trennplatte 15 nur angedeutet, um die übrigen Teile im Tank noch erkennen zu können. Im oberen Bereich 16 des Schnutzflüssigkeitabteils 7 ist die Schmutzwassereintrittsöffnung (Stutzen 13) angeordnet, so daß das Schmutzwasser zunächst in den oberen Bereich 16 eintritt. In Fig. 2 ist weiterhin im oberen Bereich 16 des Schmutzflüssigkeitsabteils 7 ein Schwimmer 17 sowie ein Filtersieb 18 dargestellt.The dirty liquid compartment 7 is divided into two areas by a diagonally arranged partition plate 15. The partition plate 15 is only hinted at the other parts still recognizable in the tank. The dirty water inlet opening (socket 13) is arranged in the upper area 16 of the wetting liquid compartment 7, so that the dirty water first enters the upper area 16. 2, a float 17 and a filter screen 18 are also shown in the upper region 16 of the dirty liquid compartment 7.

Zwischen dem Frischflüssigkeitsabteil 6 und dem Schmutzflüssigkeitsabteil 7 ist ein die Zwischenwand 8 durchdringendes Überlaufrohr 19 angeordnet, das im wesentlichen parallel zur Zwischenwand 8 verläuft und zwei um 90o abgewinkelte Öffnungsstutzen aufweist, eine Eintrittsöffnung 20 und eine Austrittsöffnung 21. Die Eintrittsöffnung 20 ist im Schmutzflüssigkeitsabteil 7 oberhalb der Bodenfläche desselben, aber unterhalb der diagonalen Trennplatte 15 im unteren Bereich 22 des Schmutzflüssigkeitsabteils 7 angeordnet. Die Austrittsöffnung 21 ist dagegen im Bereich der Bodenfläche des Frischflüssigkeitsabteils 6 angeordnet.Between the fresh liquid compartment 6 and the soiled liquid compartment 7 is arranged an intermediate wall 8 penetrating overflow pipe 19 which extends substantially parallel to the intermediate wall 8 and comprises two 90 o angled orifice nozzle, an inlet opening 20 and an outlet opening 21. The inlet opening 20 is in the soiled liquid compartment 7 arranged above the bottom surface of the same, but below the diagonal separating plate 15 in the lower region 22 of the dirty liquid compartment 7. The outlet opening 21, on the other hand, is arranged in the region of the bottom surface of the fresh liquid compartment 6.

Im Frischflüssigkeitsabteil 6 ist außerdem ein Frischflüssigkeitsaustritt 23 vorgesehen, an dem ein schwimmender Absaugtrichter 24 angeordnet ist. Dieser Ansaugtrichter 24 ist mit einem Filter versehen, der als Filterzylinder 25 ausgebildet ist. Dieser Filterzylinder 25 hat einen geschlossenen Deckel und Boden, in letzterem befindet sich allerdings eine Auslauftülle 26. Der Mantel 27 des Filterzylinders 25 ist stark gelocht, was in der Zeichnung nicht näher dargestellt ist. Über den Zylinder 25 ist ein Filtrierstrumpf 28 gezogen, der vorzugsweise aus synthetischen Gewebe mit entsprechender Maschenweite (30 bis 1000 um) gezogen.In the fresh liquid compartment 6 there is also a fresh liquid outlet 23, on which a floating suction funnel 24 is arranged. This suction funnel 24 is provided with a filter which is designed as a filter cylinder 25. This filter cylinder 25 has a closed cover and bottom, but in the latter there is an outlet spout 26. The jacket 27 of the filter cylinder 25 is heavily perforated, which is not shown in the drawing. A filtering stocking 28 is drawn over the cylinder 25 and is preferably made of synthetic fabric with a corresponding mesh size (30 to 1000 μm).

Zwischen dem Filtrierzylinder 25 und einer in Fig. 3 nur angedeuteten Laugenpumpe 29, die die Frischflüssigkeit über eine Frischflüssigkeitsaustrittsleitung 31 aus dem Frischflüssigkeitsabteil 6 zum Reinigungsrotor 9 fördert, ist über ein T-Stück ein Unterdruckwächter 30 verbunden, der in Fig. 3 ebenfalls nur prinzipiell dargestellt ist.Between the filter cylinder 25 and a drain pump 29, which is only indicated in FIG. 3 and which conveys the fresh liquid via a fresh liquid outlet line 31 from the fresh liquid compartment 6 to the cleaning rotor 9, a vacuum monitor 30 is connected via a T-piece, which is also only in principle in FIG. 3 is shown.

Bei Inbetriebnahme des Reinigungsautomaten ist der Flüssigkeitstank 4 vollständig gefüllt, d.h. beide Flüssigkeitsabteile 6, 7. Im Beispiel weist der Tank 4 ein Volumen von etwa 60 l auf. Wird der nicht dargestellte Saugmotor in Betrieb genommen, so baut sich aufgrund der Druckausgleichsöffnung 14 in beiden Flüssigkeitsabteilen 6, 7 ein einheitlicher Unterdruck auf. Das durch die Saugdüsen 10 rückgeführte Schmutzwasser gelangt durch den Saugschlauch 12 und den Stutzen 13 bzw. Schmutzwassereintritt in den oberen Bereich 16 des Schmutsflüssigkeitsabteils 7. Die Schmutzflotte befindet sich nun zunächst im oberen Bereich 16 und gelangt noch nicht in Kontakt mit der unterhalb der Trennplatte 15 befindlichen Flüssigkeit, so daß keine Vermischung mit dieser teilweise geklärten Lösung stattfindet. Der im Schmutzwasser enthaltene Feststofschmutz kann sich auf der Oberfläche der Trennplatte 15, die bevorzugt gerippt ausgebildet ist, absetzen.When the automatic cleaning machine is started up, the liquid tank 4 is completely filled, ie both liquid compartments 6, 7. In the example, the tank 4 has a volume of approximately 60 l. If the naturally aspirated engine (not shown) is put into operation, a uniform negative pressure builds up in both liquid compartments 6, 7 due to the pressure compensation opening 14. The dirty water returned through the suction nozzles 10 passes through the suction hose 12 and the nozzle 13 or dirty water inlet into the upper region 16 of the dirty liquid compartment 7. The dirty liquor is now initially in the upper region 16 and does not yet come into contact with the one below the separating plate 15 liquid, so that there is no mixing with this partially clarified solution. The one in Solid dirt contained in dirty water can settle on the surface of the separating plate 15, which is preferably ribbed.

An der tiefsten Stelle der Trennplatte 15, vorzugsweise etwa 2 cm über dem Tankboden, muß die Flotte durchtreten, um in den anderen Bereich 22 des Schmutzflüssigkeitsabteils 7 zu gelangen. Während dieser Durchströmung, die eine gewisse Zeit in Anspruch nimmt, findet ein Sedimentationsvorgang statt, d.h. die festen Schmutzpartikel setzen sich auf dem Boden des Flüssigkeitsabteils 7 ab. Im anderen Bereich 22 des Flüssigkeitsabteils 7 gelangt die teilgeklärte, nicht mehr mit Feststoffen beladene Flüssigkeit durch die in etwa in Höhe der 40 l-Markierung befindliche Eintrittsöffnung 20 des Überlaufrohres 19. Durch das Überlaufrohr tritt diese Flüssigkeit im Bodenbereich des Frischwasserabteils 6 in diesen ein, so daß die vorgeklärte Flotte aus dem Schmutzwasserabteil 7 entgegengesetzt zum Filtrierzylinder 25 an den Boden des Frischwasserabteils 6 geleitet wird.At the lowest point of the partition plate 15, preferably about 2 cm above the tank bottom, the liquor must pass through in order to reach the other area 22 of the dirty liquid compartment 7. During this flow, which takes a certain time, a sedimentation process takes place, i.e. the solid dirt particles settle on the bottom of the liquid compartment 7. In the other area 22 of the liquid compartment 7, the partially clarified liquid, which is no longer loaded with solids, passes through the inlet opening 20 of the overflow pipe 19, which is located approximately at the 40 l mark. This liquid enters the fresh water compartment 6 through the overflow pipe in the bottom area thereof, so that the pre-clarified liquor from the dirty water compartment 7 is directed opposite to the filter cylinder 25 to the bottom of the fresh water compartment 6.

In den Tanks befinden sich etwa 60 l Wasser, wobei pro Minute etwa 2 l abgepumpt bzw. aufgesaugt werden. Danach erfolgt etwa nach 30 Minuten ein Flottenumschlag, woraus sich das gute Sedimentationsergebnis erklärt.There are about 60 l of water in the tanks, with about 2 l being pumped out or sucked up per minute. This is followed by a fleet change after about 30 minutes, which explains the good sedimentation result.

Die in das Frischflüssigkeitsabteil 6 eingetretene vorgeklärte Flotte wird von der Laugenpumpe 29 über den Filtrierzylinder 25 angesaugt und über den Reinigungsrotor 9 auf die Reinigungsfläche gepumpt.The pre-clarified liquor which has entered the fresh liquid compartment 6 is discharged by the drain pump 29 via the filter cylinder 25 sucked in and pumped via the cleaning rotor 9 onto the cleaning surface.

Bei Betrieb der Laugenpumpe 29 strömt ständig Wasser durch den Filtrierstrumpf 28. Nach entsprechender Betriebsdauer und Schmutzaufnahme wird sich der Strumpf mehr oder weniger zusetzen. So entsteht ein Widerstand, der die Pumpe 29 einen Unterdruck in der Frischflüssigkeitsaustrittsleitung 31 aufbauen läßt, der vom Unterdruckwächter 30 registriert wird. Dieser Unterdruck kann über eine Anzeige signalisieren, daß die Reinigungsflotte erschöpft ist, d.h. zu stark mit Feststoffschmutzpartikeln beladen ist. Das Signal wird auch akustisch abgegeben, wenn dies gewünscht wird. Der Filterstrumpf 28 kann dann vom Betriebspersonal gewechselt werden.When the drain pump 29 is operating, water constantly flows through the filtering stocking 28. After the corresponding operating time and dirt pick-up, the stocking will become more or less clogged. This creates a resistance which causes the pump 29 to build up a negative pressure in the fresh liquid outlet line 31, which is registered by the negative pressure monitor 30. This negative pressure can signalize that the cleaning liquor is exhausted, i.e. is too heavily loaded with solid dirt particles. The signal is also emitted acoustically if so desired. The filter sock 28 can then be changed by the operating personnel.

Grundsätzlich ist der Filtrierzylinder 25 so angeordnet, daß er im Flüssigkeitsabteil 6 ständig umspült ist. Durch die leichten Schwappbewegungen während des Fahrens wird der Filtrierstrumpf 28 immer wieder freigespült, so daß er nicht so schnell verstopft.Basically, the filter cylinder 25 is arranged so that it is constantly washed around in the liquid compartment 6. Due to the slight sloshing movements while driving, the filtering stocking 28 is flushed out again and again so that it does not clog up so quickly.

Natürlich ist die Erfindung nicht auf das in der Zeichnung dargestellte Ausführungsbeispiel beschränkt. Weitere Ausgestaltungen der Erfindung sind möglich. So können zur Verbesserung der Sedimentation im Schmutzflüssigkeitsabteil 7 auch noch weitere Einbauten vorgesehen sein und dgl. mehr.Of course, the invention is not limited to the embodiment shown in the drawing. Further refinements of the invention are possible. So can improve sedimentation in the dirty liquid compartment 7 there may also be further internals and the like. More.

Claims (7)

  1. A mobile automatic floor cleaner with integrated fresh and soiled liquid compartments, a cleaning rotor to be supplied from the fresh liquid compartment and at least one suction nozzle feeding into the soiled liquid compartment, the fresh and soiled liquid compartments being separated from one another by a fixed partition which allows liquid to pass through from the soiled liquid compartment into the fresh liquid compartment, characterized in that a pressure-equalizing opening (14) is provided in the upper part of the partition (8) and in that an overflow pipe (19) passing through the partition (8) is arranged between the fresh and soiled liquid compartments (6,7), the inlet opening (20) of the overflow pipe (19) being situated above the base of the soiled liquid compartment (7) and its outlet opening (21) being situated near the base of the fresh liquid compartment (6).
  2. An automatic floor cleaner as claimed in claim 1, characterized in that a separating plate (15) which separates two zones (16,22) is provided in the soiled liquid compartment (7), the soiled water inlet opening (13) being arranged in one zone (16) and the overflow inlet opening (20) being arranged in the other zone (22).
  3. An automatic floor cleaner as claimed in claim 2, characterized in that the separating plate (15) is arranged substantially diagonally in the soiled liquid compartment (7).
  4. An automatic floor cleaner as claimed in claim 2 or 3, characterized in that the separating plate (15) has a rough surface.
  5. An automatic floor cleaner as claimed in claim 1 or any of the following claims, characterized in that a filter (25) is arranged at the fresh liquid outlet (23) of the fresh liquid compartment (6).
  6. An automatic floor cleaner as claimed in claim 5, characterized in that the filter is in the form of a filter cylinder (25) with a replaceable filter mantle (28) arranged thereon.
  7. An automatic floor cleaner as claimed in claim 5 or 6, characterized in that a reduced pressure monitor (30) is arranged between the filter (25) and the pump (29) connected to the fresh liquid outlet pipe (31).
EP92912779A 1991-07-05 1992-06-26 Mobile floor cleaning machine Expired - Lifetime EP0593521B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4122280 1991-07-05
DE4122280A DE4122280C2 (en) 1991-07-05 1991-07-05 Mobile floor cleaning machine
PCT/EP1992/001447 WO1993000853A1 (en) 1991-07-05 1992-06-26 Mobile floor cleaning machine

Publications (2)

Publication Number Publication Date
EP0593521A1 EP0593521A1 (en) 1994-04-27
EP0593521B1 true EP0593521B1 (en) 1996-02-21

Family

ID=6435503

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92912779A Expired - Lifetime EP0593521B1 (en) 1991-07-05 1992-06-26 Mobile floor cleaning machine

Country Status (7)

Country Link
US (1) US5535476A (en)
EP (1) EP0593521B1 (en)
AT (1) ATE134306T1 (en)
DE (2) DE4122280C2 (en)
ES (1) ES2084362T3 (en)
GR (1) GR3019102T3 (en)
WO (1) WO1993000853A1 (en)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994009691A1 (en) * 1992-10-28 1994-05-11 Henkel-Ecolab Gmbh & Co. Ohg Mobile floor-cleaning machine
DE9309461U1 (en) * 1993-06-25 1993-08-19 Henkel-Ecolab GmbH & Co oHG, 40589 Düsseldorf Mobile floor cleaning machine
DE4429617C1 (en) * 1994-08-20 1995-11-30 Henkel Ecolab Gmbh & Co Ohg Mobile floor cleaner with partitioned fresh and soiled fluid sides
USD426354S (en) * 1998-07-21 2000-06-06 Ryobi North America, Inc. Gasoline engine powered blower vac
US6857162B1 (en) 1998-10-12 2005-02-22 Nilfisk Advance A/S Cleaning and/or treatment device
US8412377B2 (en) 2000-01-24 2013-04-02 Irobot Corporation Obstacle following sensor scheme for a mobile robot
US6956348B2 (en) 2004-01-28 2005-10-18 Irobot Corporation Debris sensor for cleaning apparatus
US20100107562A1 (en) * 2000-06-28 2010-05-06 Weder Donald E Sheets of material having a first printed pattern on an upper surface thereof and a second printed pattern on a lower surface thereof
US6690134B1 (en) 2001-01-24 2004-02-10 Irobot Corporation Method and system for robot localization and confinement
US7571511B2 (en) 2002-01-03 2009-08-11 Irobot Corporation Autonomous floor-cleaning robot
US7663333B2 (en) 2001-06-12 2010-02-16 Irobot Corporation Method and system for multi-mode coverage for an autonomous robot
US8428778B2 (en) 2002-09-13 2013-04-23 Irobot Corporation Navigational control system for a robotic device
US7240394B2 (en) * 2003-12-06 2007-07-10 The Hoover Company Cleaning machine for cleaning a surface
US20050125935A1 (en) * 2003-12-16 2005-06-16 Leonatti John A. Cleaning machine for cleaning a surface
US7332890B2 (en) 2004-01-21 2008-02-19 Irobot Corporation Autonomous robot auto-docking and energy management systems and methods
WO2006002385A1 (en) 2004-06-24 2006-01-05 Irobot Corporation Programming and diagnostic tool for a mobile robot
US8972052B2 (en) 2004-07-07 2015-03-03 Irobot Corporation Celestial navigation system for an autonomous vehicle
US7706917B1 (en) 2004-07-07 2010-04-27 Irobot Corporation Celestial navigation system for an autonomous robot
US7620476B2 (en) 2005-02-18 2009-11-17 Irobot Corporation Autonomous surface cleaning robot for dry cleaning
US8670866B2 (en) 2005-02-18 2014-03-11 Irobot Corporation Autonomous surface cleaning robot for wet and dry cleaning
US7389156B2 (en) 2005-02-18 2008-06-17 Irobot Corporation Autonomous surface cleaning robot for wet and dry cleaning
US8392021B2 (en) * 2005-02-18 2013-03-05 Irobot Corporation Autonomous surface cleaning robot for wet cleaning
US8930023B2 (en) 2009-11-06 2015-01-06 Irobot Corporation Localization by learning of wave-signal distributions
JP4779013B2 (en) 2005-05-05 2011-09-21 テナント カンパニー Floor cleaning and polishing machine
KR101214715B1 (en) 2005-12-02 2012-12-21 아이로보트 코퍼레이션 coverage robot mobility
EP2065774B1 (en) 2005-12-02 2013-10-23 iRobot Corporation Autonomous coverage robot navigation system
EP2533120B1 (en) 2005-12-02 2019-01-16 iRobot Corporation Robot system
EP2270619B1 (en) 2005-12-02 2013-05-08 iRobot Corporation Modular robot
US8087117B2 (en) 2006-05-19 2012-01-03 Irobot Corporation Cleaning robot roller processing
US8417383B2 (en) 2006-05-31 2013-04-09 Irobot Corporation Detecting robot stasis
EP2155032B1 (en) 2007-05-09 2015-12-02 iRobot Corporation Compact autonomous coverage robot
JP7015962B2 (en) * 2018-08-30 2022-02-03 アイロボット・コーポレーション Emission station control

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE24583E (en) * 1954-10-15 1958-12-30 Automatic floor mop
US3431582A (en) * 1966-05-05 1969-03-11 Dale L Grave Cleaning device
US3996640A (en) * 1974-10-15 1976-12-14 Blue Maurice R Filtering mechanism
NL7711963A (en) * 1977-10-31 1979-05-02 Ballast Nedam Groep Nv SEPARATOR DEVICE.
US4377017A (en) * 1978-06-19 1983-03-22 Tennant Company Scrubbing machine with water regeneration
US4194263A (en) * 1978-06-19 1980-03-25 Tennant Company Scrubbing machine with water regeneration
US4348783A (en) * 1980-11-10 1982-09-14 Tennant Company Scrubbing machine with selective recycle
US4464810A (en) * 1982-07-23 1984-08-14 The Scott & Fetzer Company Scrubbing machine with liquid recirculation
US4466155A (en) * 1982-11-22 1984-08-21 Grave Dale L Recycling cleaning apparatus
US4586208A (en) * 1984-12-17 1986-05-06 Tennant Company Floor maintenance machine and method
US4747948A (en) * 1985-03-20 1988-05-31 North Darryl L Parallel plate extractor system and method for using same
DE3540783A1 (en) * 1985-11-16 1987-05-21 Hako Gmbh & Co DRIVABLE WET CLEANING MACHINE
DE3708087A1 (en) * 1987-03-13 1988-09-22 Henkel Kgaa MOBILE FLOOR CLEANING MACHINE
US5093955A (en) * 1990-08-29 1992-03-10 Tennant Company Combined sweeper and scrubber
US5242604A (en) * 1992-01-10 1993-09-07 Sudden Service Co. Lateral flow coalescing multiphase plate separator
US5331713A (en) * 1992-07-13 1994-07-26 White Consolidated Industries, Inc. Floor scrubber with recycled cleaning solution

Also Published As

Publication number Publication date
DE59205413D1 (en) 1996-03-28
WO1993000853A1 (en) 1993-01-21
US5535476A (en) 1996-07-16
ATE134306T1 (en) 1996-03-15
ES2084362T3 (en) 1996-05-01
GR3019102T3 (en) 1996-05-31
DE4122280A1 (en) 1993-01-14
EP0593521A1 (en) 1994-04-27
DE4122280C2 (en) 1994-08-18

Similar Documents

Publication Publication Date Title
EP0593521B1 (en) Mobile floor cleaning machine
DE3127440C2 (en)
EP3730019B1 (en) Floor cleaning machine
DE3325470A1 (en) MOBILE FLOOR CLEANING MACHINE
DE2848660A1 (en) FILTRATION DEVICE
DE2146838B2 (en) Method and device for filtering liquids
DE3408474C2 (en)
DE2556480C2 (en) dishwasher
EP0347445B1 (en) Gravity fed band filter for the filtration of liquids containing solid particles
DE2857092A1 (en) Paint spray booth with water wash
EP1219224A1 (en) Device for moistening and wringing a mop
DE4141711C2 (en) Mobile wet cleaning machine
DE1428411B2 (en) Dirt trap in a dishwasher
DE10237622B3 (en) Electric vacuum cleaner has suction air cleaned by passing it through fluid reservoirs and filter element in its path to suction motor
DE4208094C2 (en) Mobile floor cleaning device
DE4229204C2 (en) Mobile floor cleaning machine
DE10032782C1 (en) Cleaning device for soiled water from cleaning process has sand bed filter with flow recirculation via air/water mixture
DE8914616U1 (en) Belt filter device for cleaning processing fluids
DE60026397T2 (en) Vacuum cleaner with liquid bath
DE3739496A1 (en) Belt filter appliance for cleaning polluted liquids
DE2741729A1 (en) FILTER DEVICE FOR FILTERING DUSTIC AIR
DE3423040A1 (en) Metal cleaning plant
CH447115A (en) Continuous filtering device for liquids
DE19545633C1 (en) Capillary method for dewatering sludge and separating liquids
EP0705066A1 (en) Mobile floor-cleaning machine

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19931224

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI NL SE

17Q First examination report despatched

Effective date: 19950428

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI NL SE

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

Ref country code: GR

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

Effective date: 19960221

Ref country code: DK

Effective date: 19960221

REF Corresponds to:

Ref document number: 134306

Country of ref document: AT

Date of ref document: 19960315

Kind code of ref document: T

ET Fr: translation filed
REF Corresponds to:

Ref document number: 59205413

Country of ref document: DE

Date of ref document: 19960328

REG Reference to a national code

Ref country code: GR

Ref legal event code: FG4A

Free format text: 3019102

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2084362

Country of ref document: ES

Kind code of ref document: T3

ITF It: translation for a ep patent filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19960510

Year of fee payment: 5

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

Ref country code: DE

Payment date: 19960515

Year of fee payment: 5

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

Ref country code: AT

Payment date: 19960524

Year of fee payment: 5

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19960426

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

Ref country code: GB

Effective date: 19960626

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

Ref country code: SE

Effective date: 19960627

Ref country code: ES

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

Effective date: 19960627

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

Ref country code: BE

Effective date: 19960630

NLT2 Nl: modifications (of names), taken from the european patent patent bulletin

Owner name: HENKEL KOMMANDITGESELLSCHAFT AUF AKTIEN

BERE Be: lapsed

Owner name: HENKEL K.G.A.A.

Effective date: 19960630

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

Ref country code: NL

Effective date: 19970101

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

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

REG Reference to a national code

Ref country code: GR

Ref legal event code: MM2A

Free format text: 3019102

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19960626

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19970228

EUG Se: european patent has lapsed

Ref document number: 92912779.3

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19970101

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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

Ref country code: AT

Effective date: 19970626

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

Ref country code: LI

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

Effective date: 19970630

Ref country code: CH

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

Effective date: 19970630

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: DE

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

Effective date: 19980303

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20030303

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

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050626