EP0717952B1 - Bodenreinigungsmaschine - Google Patents

Bodenreinigungsmaschine Download PDF

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Publication number
EP0717952B1
EP0717952B1 EP95830533A EP95830533A EP0717952B1 EP 0717952 B1 EP0717952 B1 EP 0717952B1 EP 95830533 A EP95830533 A EP 95830533A EP 95830533 A EP95830533 A EP 95830533A EP 0717952 B1 EP0717952 B1 EP 0717952B1
Authority
EP
European Patent Office
Prior art keywords
steam
collection tank
centrifugal fan
conduit
cleaned
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
EP95830533A
Other languages
English (en)
French (fr)
Other versions
EP0717952A1 (de
Inventor
Pietro Pecorari
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.)
ROSSI GROUP SpA
Original Assignee
ROSSI GROUP SpA
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
Priority claimed from IT94MO000170 external-priority patent/IT1269283B/it
Priority claimed from ITMO950023 external-priority patent/IT1279361B1/it
Priority claimed from ITMO950090 external-priority patent/IT1279819B1/it
Application filed by ROSSI GROUP SpA filed Critical ROSSI GROUP SpA
Publication of EP0717952A1 publication Critical patent/EP0717952A1/de
Application granted granted Critical
Publication of EP0717952B1 publication Critical patent/EP0717952B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A47L11/4036—Parts or details of the surface treating tools
    • A47L11/4038—Disk shaped surface treating tools
    • 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
    • A47L11/34—Machines for treating carpets in position by liquid, foam, or vapour, e.g. by steam
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4036—Parts or details of the surface treating tools
    • A47L11/4044—Vacuuming or pick-up tools; Squeegees
    • 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
    • A47L11/408—Means for supplying cleaning or surface treating agents
    • A47L11/4088—Supply pumps; Spraying devices; Supply conduits

Definitions

  • the present invention relates particularly but not exclusively to the field of floor cleaning.
  • the invention relates to a device which on command advances on a surface to be cleaned, and comprises a steam delivery conduit which directs, on command, a stream of vapour directly on to said surface.
  • the prior art teaches a device of this type, in which the steam delivery conduit is connected to a steam generator; the device is generally provided with a steam brush out of which flows a steam jet coming from the steam delivery conduit, and a rotatable roller brush for entraining the dirty liquid forming on the surface into a collection tank.
  • This roller brush rotates by friction against said surface when advanced thereupon.
  • roller brush constitutes an obstacle against smooth advancement of the device on the surface. This can lead to the device's being hard to push and manoeuvre, especially when operated by a single operator by hand.
  • a further disadvantage of prior art devices is that at the end of the operation the cleaned surface is still wet.
  • the main aim of the present invention is to obviate the above-mentioned drawbacks by providing a constructionally simple and economical device with which an operator can clean surfaces with reasonable expenditure of energy.
  • the mechanical energy can advantageously be used for activating means for collecting the dirty liquid produced on the surface being cleaned, and for entraining same into a collection tank.
  • An advantage of the invention is represented by the fact that said means for collecting and entraining the dirty liquid are very simple and involve low energy consumption.
  • the mechanical energy made available can also be advantageously used, for example, to rotate the means for operating rotatably mounted on the device, such as, for example, a steam brush which, as well as issuing a jet of steam, scrubs the surface, or a steam brush which collects the dirty liquid from the surface.
  • the steam brush can act on the surface by scrubbing energetically and continuously thereupon with only a reasonable energy expenditure on the part of the operator.
  • a further advantage of the invention is that it does not require an electric motor to drive the brushes and therefore involves none of the risks usually connected with the presence of electric current near wet surfaces.
  • a further advantage of the invention is that it provides a device which is fitted with means for collecting the dirty liquid from the surface to be cleaned, acting while the device is being moved back and forth on the surface. At the end of the operation the surface is dry.
  • 1 denotes in its entirety a device for cleaning surfaces, which advances on command on a floor 21 to be cleaned and which comprises a steam brush 3 connected to a delivery conduit 6.
  • the delivery conduit 6 is passed through by a flow of steam which forms a vapour jet directed at the floor 21.
  • a sleeve 2 is fitted on the steam brush 3 for attaching a steam pipe, of known type and not illustrated in the figures, connected to a steam generator, also of known type.
  • the steam arriving from the pipe is slightly heated to a pressure of usually between 3 and 4 bars.
  • the device 1 further comprises means for collecting and entraining the dirty liquid which forms on the floor 21 towards a collection tank 4 solidly mounted to the steam brush 3.
  • These means for collecting and entraining comprise, in the embodiment of figures 1 and 2, a roller brush 7 which directs the dirty liquid towards the collection tank 4 by means of a ramp 8.
  • the roller brush 7 comprises two coaxial half-brushes distanced one from the other.
  • the device further comprises means for transforming part of the steam energy in the delivery conduit 6 into mechanical energy.
  • the means for transforming preferably comprise an impeller 5 of a steam turbine which is activated by the steam passing through the delivery conduit 6 and which activates the roller brush 7 by means of a gear reducer 9.
  • a small transmission shaft 16 is also provided, connected to the roller brush 7 axle by means of a conical gear 17 situated between the two half-brushes.
  • the collection tank 4 is subdivided into two separate portions, each located at one of the half-brushes.
  • the roller brush 7 is elastically journalled to the steam brush 3 by means of a pivot 18 and a spring 19.
  • the delivery conduit 6 comprises a first tract 6a which supplies heated steam to the impeller 5 of the turbine and a second tract 6b which conveys the fluid exiting from said impeller 5 towards the steam brush 3.
  • 21 denotes a floor to be cleaned, 1 a device for cleaning surfaces, and 2 a connection sleeve for connecting to a heated steam delivery, and 3 a steam brush, 6 a delivery conduit through which steam passes, 5 an impeller of a steam turbine actuated by steam passing through the conduit 6, and 6a a first tract and 6b a second tract of the conduit 6 which respectively supply the steam to the turbine and feed the exiting steam from the impeller 5 to the steam brush 3.
  • the second embodiment of the invention comprises means for conveying, that is, collecting and entraining the liquid forming on the floor being cleaned, which means comprise a centrifugal fan 10 activated by the impeller 5 of the turbine.
  • the centrifugal fan 10 is conformed and arranged such that it aspirates the dirty liquid from the floor 21 and sends it to the colection tank.
  • the centrifugal fan 10 operates internally of an aspiration conduit 11 which exhibits at one end thereof an inlet mouth 12 for the dirty liquid located near to the floor 21.
  • the device 1 comprises a box 13 provided with two chambers 14 and 15, separate and sealed, a first of which houses the impeller 5 and a second of which houses the centrifugal fan 10.
  • the chamber 14 housing the impeller 5 is equipped with an inlet 14i and an outlet 14u for the steam.
  • the chamber 15 housing the centrifugal fan 10 is equipped with an inlet 15i and an outlet 15u for the aspirated liquid.
  • the aspiration conduit 11 of the dirty liquid comprises a first tract 11a which goes from the inlet mouth 12 near the floor 21 to the inlet 15i of the aspirated liquid into the box 13.
  • the first tract 11a is rigid and is solidly connected to the box 13 and hinged by a pivot 20 to the steam brush 3.
  • the aspiration conduit 11 is further provided with a second tract, not illustrated, which goes from the outlet 15u to the collection tank.
  • 3 denotes a steam brush, in particular for floors
  • 4 denotes a collection tank for dirty water aspirated from the floor
  • 6 a delivery conduit 6a a first tract of conduit 6 supplying heated steam to a steam turbine
  • 6b a second tract supplying the fluid exiting from the turbine to the steam brush 3
  • 13 a box as in figure 5, which houses the steam turbine and a centrifugal fan 10.
  • 14i and 14u respectively denote an inlet and an outlet predisposed on the box 13 for the steam passage through the turbine
  • 15i and 15u denote respectively an inlet and an outlet for the air aspirated by the centrifugal fan 10 operating inside the box 13.
  • 12 denotes an inlet mouth of the dirty water collected from the floor 21, while 11a denotes a first tract of an aspiration conduit of the dirty water.
  • centrifugal fan 10 aspirates only air from the collection tank 4, creating a depression therein.
  • the first tract 11a of the aspiration conduit of the dirty water does not enter the box 13 and therefore the centrifugal fan 10 chamber, but discharges into the collection tank 4.
  • the fluid exiting from the centrifugal fan 10 through the outlet 15u is only clean and hot air, due to the temperature of the adjacent turbine.
  • This outlet fluid is channelled into a drying conduit 11c which has one of its ends arranged in proximity of the surface to be cleaned. The clean hot air is thus sent on to the floor 21 and dries it.
  • FIG 7 which shows a fourth embodiment of the invention, 1 denotes in its entirety a device for cleaning surfaces, which in the example is able to advance, on command, on a floor 21 to be cleaned and which comprises a steam brush 3 for cleaning surfaces.
  • the steam delivery conduit 6 denotes a steam delivery conduit which is connected to a steam generator of known type and not illustrated in the drawings.
  • the steam delivery conduit is passed through by a quantity of steam such as to produce a jet thereof which flows through the steam brush 3 and is directed on to the floor 21.
  • 30 denotes a hollow bearing structure 30 internally of which the delivery conduit 6 is arranged. The steam in the delivery conduit 6 is slightly heated.
  • centrifugal fan 10 denotes a centrifugal fan which operates internally of an aspiration conduit 11 conformed and disposed to enable the dirty liquid to be aspirated through an inlet mouth 12 and send same to a collection tank 4.
  • the centrifugal fan 10 is preferably coaxial to the impeller 5 of the turbine, as well as solidly connected thereto.
  • a box 13 comprising two chambers 14 and 15 is provided, which chambers are separate one from the other and are sealed.
  • a first of the chambers 14 houses the impeller 5 of the turbine, while the second of the chambers 15 houses the centrifugal fan 10.
  • the aspiration conduit 11 of the dirty liquid comprises a first tract 11a which goes from the inlet mouth 12 to the collection tank 4.
  • the first tract 11a is at least partially rigid and is journalled to the bearing structure 30 by means of a pivot 20, and can oscillate with respect to the bearing structure 30.
  • the centrifugal fan 10 aspirates only air from the collection tank 4, creating a depression therein.
  • the first tract 11a of the aspiration conduit 11 does not open into the centrifugal fan 10 but discharges into the collection tank 4.
  • 11b denotes a second tract of aspiration conduit which goes from the collection tank 4 to the centrifugal fan 10, and which is protected by a shield 23.
  • This second tract 11b does not aspirate liquid, but only air; for this reason its mouth situated inside the collection tank 4 is kept constantly above the level of the liquid collected therein.
  • the first tract 11a of aspiration conduit 11 is protected by a shield 22 curved towards the bottom of the collection tank 4 and kept constantly above the level of the liquid collected therein. In this way, even where there is a considerable quantity of liquid in the collection tank 4, the power absorbed by the centrifugal fan 10 is of modest entity.
  • the steam brush 3 is mounted, preferably removably by screw attachments, on a hollow shaft 24 rotatably coupled to the box 13 of the turbine, and is connected to the turbine by means of a reducer, preferably a gear reducer 25.
  • the rotation axis of the hollow shaft 24 is normal to the surface to be cleaned. The steam passes through the cavity in the hollow shaft 24 and goes directly on to the surface to be cleaned.
  • 26 and 27 respectively denote a nozzle for emission of steam on to the turbine and an internal conduit of the steam brush 3 through which the steam passes when exiting from the turbine to be directed at the floor 21.
  • the steam brush driven by the impeller 5, is rotated with its axis normal to the surface of the floor, so that a vigorous and continuous scrubbing action is obtained without undue effort on the part of the operator, resulting in an especially well-cleaned floor.
  • FIG 8 shows a steam brush 3' which is somewhat modified with respect to the steam brush 3 of figure 7, in that it has a quick-fit attachment.
  • two conduits 27' for the steam are afforded in the steam brush 3.
  • the device 1 is pushed by the operator on a floor to be cleaned.
  • the steam head in the delivery conduit 6 supplies and activates the impeller 5 of the turbine, which then powers the various tools which can be attached thereto, according to the embodiment.
  • the turbine activates a roller brush 7 for collecting the dirty water; in the further embodiments the turbine activates the aspiration means for aspirating the dirty liquid; in the final embodiment (figures 7 and 8), apart from activating the means for aspiration, the turbine rotates a steam brush 3 which then scrubs the floor.
  • the roller brush 7 is elastically journalled so as to absorb the bumps and vibrations to which it is subject during functioning of the device; in the other versions, thanks to the fact that the first tract 11a of the aspiration conduit 11 is pivoted at the pivot 20 - also elastically - the inlet mouth 12 is constantly positioned near the floor 21 so that the dirty liquid is efficiently aspirated even where the floor is not perfectly flat, and the whole aspiration system assembly is protected from bumps and impacts.
  • An advantage of the invention is that the group comprising the steam turbine, the centrifugal fan 10 and the box 13 is extremely compact and of very contained mass.
  • An advantageous detail of the device is that it efficiently collects the dirty water from the floor during both forward and backward movements; the turbine rotates the roller brush 7 (first embodiment) and the centrifugal fan 10 (other embodiments) in a same rotation direction, so that the dirty liquid is conveyed towards the collection tank 4, independently of the movement of the device 1 on the floor 21.
  • the invention provides a device for cleaning surfaces, especially floors, which is particularly light and practical to manoeuvre, apart from being extremely efficient and reliable.
  • centrifugal fan 10 other systems of aspiration can be used instead of the centrifugal fan 10, such as membrane systems, piston systems, and so on.

Landscapes

  • Cleaning In General (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Pinball Game Machines (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Claims (10)

  1. Bodenreinigungsmaschine, die auf einer zu reinigenden Oberfläche (21) bewegbar ist und eine Dampfleitung (6), welche so gestaltet und angeordnet ist, dass diese Dampf auf diese Oberfläche abgibt, sowie verschiedene Werkzeuge (3, 7, 10) aufweist,
    dadurch gekennzeichnet,
    dass sie ferner eine Dampfturbine aufweist, die mit einem mittels des von der Dampfleitung (6) zugeführten Dampfes antreibbaren Laufrad (5) versehen ist. dass die Dampfturbine mit den verschiedenen Werkzeugen der Maschine zu deren Betätigung in Wirkverbindung steht und dass die Werkzeuge mindestens eine drehbare Bürste (3, 7) aufweisen.
  2. Maschine nach Anspruch 1,
    dadurch gekennzeichnet,
    dass als Werkzeug eine Einrichtung (10, 11) zum Fördern von sich auf der Oberfläche (21) bildender schmutziger Flüssigkeit zu einem Filssigkeitssammelbehälter (4) vorgesehen ist.
  3. Maschine nach Anspruch 2,
    dadurch gekennzeichnet,
    dass die die schmutzige Flüssigkeit fördernde Einrichtung eine Kreiselpumpe (10) ausweist, die innerhalb einer Saugleitung (11) in der Weise arbeitet, dass die schmutzige Flüssigkeit mittels einer Einlassöffnung (12) der Saugleitung (11) von der Oberfläche (21) angesaugt und zum Sammelbehälter (4) geführt wird.
  4. Maschine nach Anspruch 3,
    dadurch gekennzeichnet,
    dass die Saugleitung (11) für die schmutzige Flüssigkeit einen ersten Abschnitt (11a), der die Einlassöffnung (12) mit dem Sammelbehälter (4) verbindet, und einen zweiten Abschnitt (11b) aufweist, der im Inneren des Sammelbehälters (4) beginnt und zur Kreiselpumpe (10) führt, und dass der zweite Abschnitt (11b) eine im Inneren des Sammelbehälters (4) befindliche Saugöffnung aufweist, die konstant über dem Niveau der darin gesammelten schmutzigen Flüssigkeit gehalten ist.
  5. Maschine nach Anspruch 3 oder 4,
    dadurch gekennzeichnet,
    dass sie eine Trockenleitung (11c) aufweist, die mit einem Auslass der Kreiselpumpe (10) verbunden ist und selbst einen Auslass aufweist, der in der Nähe der zu reinigenden Oberfläche angeordnet ist.
  6. Maschine nach Anspruch 2,
    dadurch gekennzeichnet,
    dass die Flüssigkeit fördernde Einrichtung als drehbare Bürste eine Bürstenwalze (7) aufweist, die zum Aufnehmen der schmutzigen Flüssigkeit von der zu reinigenden Oberfläche (21) und zum Leiten dieser zu dem Behälter (4) drehbetätigbar ist.
  7. Maschine nach Anspruch 3,
    dadurch gekennzeichnet,
    dass die Kreiselpumpe (10) derart betätigt wird, dass diese im Sammelbehälter (4) einen Unterdruck erzeugt.
  8. Maschine nach den Ansprüchen 7 oder 3,
    dadurch gekennzeichnet,
    dass sie ein Gehäuse (13) aufweist, welches eine abgedichtete erste Kammer (14) und eine abgedichtete zweite Kammer (15) aufweist, und dass in der ersten Kammer (14) das Laufrad (5) der Dampfturbine und in der zweiten Kammer (15) die Kreiselpumpe (10) enthalten ist.
  9. Maschine nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet,
    dass die mindestens eine drehbare Bürste eine drehbare Dampfbürste (3) ist, die mit der Dampfleitung (6) verbunden ist und der zu reinigenden Oberfläche zur Bearbeitung zugeordnet ist, und dass die Dampfbürste mittels des Laufrades (5) in Rotation versetzt wird.
  10. Maschine nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet,
    dass die Einrichtung (10) zum Fördern von sich auf der zu reinigenden Oberfläche (21) bildender schmutziger Flüssigkeit zu dem Flüssigkeitssammelbehälter (4) aus einer Membran- oder Kolbenansaugeinrichtung gebildet ist.
EP95830533A 1994-12-21 1995-12-21 Bodenreinigungsmaschine Expired - Lifetime EP0717952B1 (de)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
IT94MO000170 IT1269283B (it) 1994-12-21 1994-12-21 Apparecchio per pulire superfici
ITMO940170 1994-12-21
ITMO950023 IT1279361B1 (it) 1995-02-20 1995-02-20 Apparecchio perfezionato per pulire superfici
ITMO950023 1995-02-20
ITMO950090 1995-06-16
ITMO950090 IT1279819B1 (it) 1995-06-16 1995-06-16 Dispositivo perfezionato per pulire superfici

Publications (2)

Publication Number Publication Date
EP0717952A1 EP0717952A1 (de) 1996-06-26
EP0717952B1 true EP0717952B1 (de) 2000-08-23

Family

ID=27274121

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95830533A Expired - Lifetime EP0717952B1 (de) 1994-12-21 1995-12-21 Bodenreinigungsmaschine

Country Status (3)

Country Link
EP (1) EP0717952B1 (de)
AT (1) ATE195642T1 (de)
DE (1) DE69518496T2 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2360201A (en) 2000-03-17 2001-09-19 Duplex Cleaning Machines Steam cleaning for surfaces
NL1020598C2 (nl) * 2002-05-14 2003-11-17 Usf Ebe B V Vloerreinigingsmachine.
GB2392826A (en) * 2002-09-12 2004-03-17 Drysteam Cleaners Ltd A method and apparatus for steam cleaning a surface
EP1498063A1 (de) * 2003-07-18 2005-01-19 WALSER & CO. AG Verfahren und Vorrichtung zum Reinigen von Flächen, insbesondere Bodenflächen
CN113522374A (zh) * 2021-07-04 2021-10-22 曹奕哲 一种化学实验室用废水收集装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3502064C1 (de) * 1984-03-21 1986-06-19 Karlheinz Dipl.-Ing. 8721 Michelau Meidel Düse für Haushalts- oder Gewerbesauggeräte
EP0430415B1 (de) * 1989-12-01 1994-02-23 William Hendrick Williams Nass- und Trockensauger
KR920004078Y1 (ko) * 1990-05-16 1992-06-20 삼성전자 주식회사 진공청소기의 세제 공급장치
CH684994A5 (fr) * 1991-10-02 1995-02-28 Radwulf Sa Appareil de nettoyage de surface par projection de vapeur.

Also Published As

Publication number Publication date
DE69518496T2 (de) 2001-01-04
ATE195642T1 (de) 2000-09-15
DE69518496D1 (de) 2000-09-28
EP0717952A1 (de) 1996-06-26

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