WO2002069774A1 - Floor cleaning device - Google Patents

Floor cleaning device Download PDF

Info

Publication number
WO2002069774A1
WO2002069774A1 PCT/EP2002/002127 EP0202127W WO02069774A1 WO 2002069774 A1 WO2002069774 A1 WO 2002069774A1 EP 0202127 W EP0202127 W EP 0202127W WO 02069774 A1 WO02069774 A1 WO 02069774A1
Authority
WO
WIPO (PCT)
Prior art keywords
suction
turbine
floor cleaning
cleaning device
characterized
Prior art date
Application number
PCT/EP2002/002127
Other languages
German (de)
French (fr)
Inventor
Ralph Diehl
Jacob Janzen
Joachim Keppler
Original Assignee
Alfred Kärcher Gmbh & 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
Priority to DE2001110907 priority Critical patent/DE10110907A1/en
Priority to DE10110907.5 priority
Application filed by Alfred Kärcher Gmbh & Co. Kg filed Critical Alfred Kärcher Gmbh & Co. Kg
Publication of WO2002069774A1 publication Critical patent/WO2002069774A1/en

Links

Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L5/00Structural features of suction cleaners
    • A47L5/12Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/02Floor surfacing or polishing machines
    • A47L11/20Floor surfacing or polishing machines combined with vacuum cleaning devices
    • A47L11/202Floor surfacing or polishing machines combined with vacuum cleaning devices having separate drive for the cleaning brushes
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/24Floor-sweeping machines, motor-driven
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40Parts 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
    • A47L11/4027Filtering or separating contaminants or debris
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40Parts 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
    • A47L11/4036Parts or details of the surface treating tools
    • A47L11/4041Roll shaped surface treating tools
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40Parts 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
    • A47L11/4036Parts or details of the surface treating tools
    • A47L11/4044Vacuuming or pick-up tools; Squeegees
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/22Mountings for motor fan assemblies

Abstract

The invention relates to a floor cleaning device (10), comprising a suction turbine (40) with a driven turbine wheel (44) that rotates about a turbine axis (54), and a substantially horizontal suction channel (35) via which the suction turbine (40) is fluidically linked with a suction opening (33) facing the floor area to be cleaned. The suction channel forms a dirt collector (67) and houses a dirt filter (37). In order to provide a floor cleaning device (10) with an overall height that is as small as possible while still ensuring a potent suction flow in the area of the suction opening (33), the suction turbine (40) is mounted on the suction channel (35) with its turbine axis (54) being aligned at an angle to the vertical.

Description

Floor cleaning device

The invention relates to a floor cleaning device comprising a suction turbine with a turbine shaft rotatably driven turbine wheel, and a substantially horizontally aligned suction channel via which the suction turbine is connected to one of the faces to be cleaned bottom surface of the suction port in fluid communication with the suction channel forming a dirt receiving container and a dirt filter receives.

Such a floor cleaning apparatus is known from international disclosure WO 99/28800 legungsschrift known. By means of the suction turbine, a suction flow can be generated with the aid of the floor to be cleaned surface can be sucked. In the known floor-cleaning device, the suction turbine is fitted with a vertically oriented turbine axis to the extending substantially in the horizontal direction suction channel. This allows the use of a relatively large turbine wheel, however, has the disadvantage that the floor cleaning appliance has a considerable height.

The object of the present invention is to design a floor cleaning device of the type mentioned with the smallest possible overall height, whereby a suction flow as strong as possible should be achieved in the area of ​​the suction opening.

This object is achieved with a floor cleaning device of the generic type according to the invention in that the suction turbine is fitted with obliquely oriented to the vertical turbine axis of the suction channel. By such alignment of the suction turbine, the height of the floor cleaning appliance can be kept low even when a relatively large turbine wheel. In addition, such an arrangement has the advantage that the suction flow caused by the suction turbine suffers only relatively small losses taking place in the connection region between the suction channel and suction turbine changes in direction. This has the consequence that in the region of the suction opening a relatively strong suction flow can be generated. The floor cleaning device according to the invention is thus characterized by a compact design and a particularly effective operation.

It is advantageous when the turbine axis is aligned at an angle of about 15 ° to about 75 ° to the vertical is. Here, in particular an angle of about 20 ° to about 40 ° has proven particularly favorable to keep the one hand, occurring flow losses in the transition region between the horizontally aligned suction channel and the suction turbine small, and on the other hand the use of a large with respect to a smallest possible overall height as possible to allow the turbine wheel.

To achieve a particularly effective cleaning effect, it is of advantage when the floor-cleaning device disposed in the region of a suction port, comprising rotatably drivable brush roller. Using the brush roller to clean floor surface can be not only sucked but additionally brushed. It is of advantage if the suction turbine is formed as an axial-radial fan, based means of which the working air is sucked to the turbine axis in the axial direction and releasably in the radial direction. The use of an axial-radial fan enables the construction of a high pressure difference, so that a particularly strong suction flow can be achieved.

As already explained, floor cleaning device according to the invention is characterized by a relatively low height. This makes it possible to achieve by means of the floor cleaning appliance also areas of the floor to be cleaned area under radiators, pieces of furniture and the like. The air sucked from the suction turbine working air is discharged back into the environment after passing through the dirt receptacle and the suction turbine. In order to prevent that the discharged working air whirls up dirt that has been deposited for example, radiators, it is of advantage if the suction turbine comprises an air outlet opening into at least one outlet channel, whose opening area is aligned obliquely to the vertical. The exhaust air can be discharged by means of the obliquely oriented to the vertical mouth region with a correspondingly obliquely oriented exhaust air flow, so that the risk is reduced that dirt is detected by the exhaust air flow, which has been deposited for example on a heater when the floor-cleaning device is positioned below the radiators.

As it has proved advantageous in this case if the opening area of ​​the outlet is oriented at an angle of about 60 ° to about 80 ° to the vertical. To keep the noise of the floor cleaning appliance low, it has proven to be advantageous when the outlet channel surrounding the turbine wheel in the circumferential direction. This makes it possible to use a relatively long outlet channel despite compact as possible bauendem floor cleaning device, so that the noise of the vacuum motor can be reduced. The use of a long outlet duct is also an increase in the pressure difference between the inlet and outlet of the suction turbine a result, whereby the efficiency of the suction turbine is improved.

A particularly low noise can be achieved in that the outlet channel is formed spirally and continuously extends in the flow direction. In such a configuration, the exhaust air can continuously expand, so that an abrupt air expansion is avoided with a corresponding noise.

In a particularly preferred embodiment of the floor cleaning device according to the invention it is provided that the suction turbine comprises an electric external rotor motor with a maintained to a support member and a stator is rotatable about the turbine axis rotor to which the turbine wheel is rotatably held. The use of the external rotor motor makes it possible to position the motor on the side opposite the suction side of the turbine wheel, without this having a significant increase in the overall height of the floor cleaning appliance result. This in turn has the advantage that the suction channel has no significant cross-sectional constrictions and thus is characterized by a very low flow resistance. The floor cleaning device is preferably configured self-propelled. It can for this purpose comprise a chassis, two electric motor-driven drive wheels are mounted on the.

The following description of a preferred embodiment of the invention serves in conjunction with the drawings for a more detailed explanation. Show it:

Figure 1 is a schematic sectional view of a floor cleaning appliance, and

Figure 2 is a plan view of the floor cleaning device.

In the drawing, an occupied in total by the reference numeral 10 self-propelled floor cleaning device is shown with a formed as a plastic injection-molded part chassis 12, are rotatably mounted on the two driving wheels 13, 14 which are driven in rotation each by means of an electric drive motor 15 and 16 respectively.

On the chassis 12, a lid can be placed, which forms a dust cover and is not shown for achieving a better clarity, in the figures 1 and 2. FIG.

Between the two driving wheels 13, 14, the chassis 12 forms a substantially aligned parallel to a floor to be cleaned surface 19 of support plate 21, to which in the direction of travel 22 of the floor cleaning appliance 10 via a step 23 a likewise oriented parallel to the bottom surface 19 of support plate 24 as well as an in connecting toward the bottom surface 19 aligned end wall 25th

A distance from the support plate 21 is held releasably connectable to a per se known and therefore not shown in the drawing latching elements a bottom plate 26 on the chassis 12 by means 27 supporting rollers 29 are freely rotatably mounted at its in the direction of travel 22 front end portion thereof.

The bottom plate 26 supports in its front region, a sweeping sill 31, the bottom plate 26 by cross suction port 33 is immersed in an, in which opens a substantially horizontally aligned suction channel 35 defined between the support plate 21, the step 23 and the support plate 24 on the one hand and the bottom plate 26 extends on the other hand. Within the suction channel 35 a strainer 37 is oblique to the longitudinal direction thereof aligned maintained.

At its rear end portion of the chassis 12 carries a suction turbine 40 with a turbine housing upper part 41 and a turbo binengehäuseunterteil 42 which receive between them a turbine wheel 44 and an electric turbine drive 46th

The turbine engine 46 is designed as an external rotor motor, and comprises a rotatably held on the turbine housing upper part 46 the stator 48 as well as a rotatably supported on the stator 48 rotor 49 in the form of the stator 48 cross hood 50, facing to the stator 48 inside the permanent magnets are fixed 51 and at its the turbine housing upper part 41 facing away from the bottom wall of the turbine wheel is non-rotatably held 44th The turbine wheel 44 is driven to perform a rotary movement about a turbine axis 54 by means of the turbine drive 46th The turbine shaft 54 ​​is inclined to the vertical and thus also oriented obliquely to the longitudinal extension of the suction channel 35th The turbine wheel 44 is associated with an air inlet opening 56 of the suction turbine 40th The air intrittsöff- voltage 56 is formed by an integrally connected to the turbine housing part 42 manifold 58, which establishes a flow connection between the suction duct 35 and the interior of the suction turbine 40th

As is apparent in particular from Figure 2, the turbine wheel 44 is circumferentially surrounded by an outlet channel 60 which is spiral-shaped and continuously extended in the direction of flow and opens into an air outlet opening 62, wherein the air outlet opening 62 adjacent the mouth portion 64 of the outlet channel 60 also obliquely is aligned to the vertical.

By means of the suction turbine 40 may be generated within the suction channel 35 is a symbolized by the arrows 66 suction flow, can be converted into the suction channel 35 with the aid of the floor to be cleaned dirt surface 19 via the suction port 33rd The upstream of the dirt filter 37 arranged in the region of the suction channel 35 in this case forms a dirt receptacle 67th

In order to enhance the dirt absorption, in the region of the suction opening 33, a brush roller 68 is held with transverse to the direction 22 and aligned parallel to the bottom surface 19 axis of rotation on the chassis 12th The drive of the brush roller 68 is effected by means nes egg positioned on the support plate 24 brushes electric drive 69 which is coupled via a known per se and therefore not shown in the drawing drive belt with the brush roller 68th

Since the suction flow 66 in the region of the suction channel 35 and the obliquely oriented relative to the vertical intake port suffers 58 only small flow losses in the suction port 33, a strong suction flow can be obtained, which causes an effective floor cleaning in combination with the brush roller 68th By the suction flow of the whirling of the brush roller 68 dirt is detected and transferred into the dirt receptacle 67th The orientation of the suction turbine 40 with oblique to the vertical turbine axis 54 in this case allows the use of relatively large turbine wheel 44, but the height of the floor cleaning device 10 can be kept low.

Claims

PATENT CLAIMS
1. A floor cleaning device comprising a suction turbine with a turbine shaft rotatably driven turbine wheel, and a substantially horizontally aligned suction channel via which the suction turbine is connected to one of the faces to be cleaned bottom surface of the suction port in fluid communication with the suction channel forming a dirt receptacle and accommodating a dirt filter, characterized in that the suction turbine (40) is obliquely aligned to the vertical axis turbine (54) to the suction channel (35) applied.
2. A floor cleaning device according to claim 1, characterized in that the turbine axis (54) is oriented at an angle of about 15 ° to about 75 ° to the vertical.
3. A floor cleaning device according to claim 1 or 2, characterized in that the floor cleaning appliance (10) arranged in a region of the suction opening (33), rotatably drivable brush roller (68).
4. A floor cleaning device according to any one of claims 1 to 3, characterized in that the suction turbine is formed as an axial-radial fan (40).
includes 5. A floor cleaning device according to any one of the preceding claims, characterized in that the suction turbine (40) opening out in an at least an air outlet (62) outlet duct (60), the mouth region (64) is aligned obliquely to the vertical.
6. A floor cleaning device according to any one of the preceding claims, characterized in that the outlet channel (60) surrounding the turbine wheel (44) in the circumferential direction.
7. A floor cleaning device according to claim 6, characterized in that the outlet channel (60) is formed spirally and continuously extends in the flow direction.
8. A floor cleaning device according to any one of the preceding claims, characterized in that the suction turbine (40) comprises an electric external rotor motor (46) supported with a on a supporting element (41) stator (48) and rotatable one to the turbine axis (54) rotor (49 ) on which the turbine wheel (44) is held against rotation.
9. A floor cleaning device according to any one of the preceding claims, characterized in that the floor cleaning appliance (10) is self-propelled configured.
PCT/EP2002/002127 2001-03-07 2002-02-28 Floor cleaning device WO2002069774A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE2001110907 DE10110907A1 (en) 2001-03-07 2001-03-07 Floor cleaning device
DE10110907.5 2001-03-07

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2002513166 DE50213166D1 (en) 2001-03-07 2002-02-28 Floor cleaner with low height
EP20020703606 EP1365674B1 (en) 2001-03-07 2002-02-28 Floor cleaning device of small height
US10/641,734 US20040074044A1 (en) 2001-03-07 2003-08-15 Floor cleaning appliance

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US10/641,734 Continuation US20040074044A1 (en) 2001-03-07 2003-08-15 Floor cleaning appliance

Publications (1)

Publication Number Publication Date
WO2002069774A1 true WO2002069774A1 (en) 2002-09-12

Family

ID=7676577

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/002127 WO2002069774A1 (en) 2001-03-07 2002-02-28 Floor cleaning device

Country Status (6)

Country Link
US (1) US20040074044A1 (en)
EP (1) EP1365674B1 (en)
CN (1) CN1239119C (en)
AT (1) AT418902T (en)
DE (2) DE10110907A1 (en)
WO (1) WO2002069774A1 (en)

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US8780342B2 (en) 2004-03-29 2014-07-15 Irobot Corporation Methods and apparatus for position estimation using reflected light sources
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CN1494392A (en) 2004-05-05
EP1365674A1 (en) 2003-12-03
US20040074044A1 (en) 2004-04-22
DE50213166D1 (en) 2009-02-12
DE10110907A1 (en) 2002-09-19
AT418902T (en) 2009-01-15
EP1365674B1 (en) 2008-12-31

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