WO1998027856A1 - Double acting floor washing device - Google Patents

Double acting floor washing device Download PDF

Info

Publication number
WO1998027856A1
WO1998027856A1 PCT/DK1996/000549 DK9600549W WO9827856A1 WO 1998027856 A1 WO1998027856 A1 WO 1998027856A1 DK 9600549 W DK9600549 W DK 9600549W WO 9827856 A1 WO9827856 A1 WO 9827856A1
Authority
WO
WIPO (PCT)
Prior art keywords
floor
washing device
scraping
plates
house
Prior art date
Application number
PCT/DK1996/000549
Other languages
French (fr)
Inventor
Jörgen SJÖGREEN
Original Assignee
Sjoegreen Joergen
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 Sjoegreen Joergen filed Critical Sjoegreen Joergen
Priority to PCT/DK1996/000549 priority Critical patent/WO1998027856A1/en
Publication of WO1998027856A1 publication Critical patent/WO1998027856A1/en

Links

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
    • A47L11/4044—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
    • A47L11/29—Floor-scrubbing machines characterised by means for taking-up dirty liquid
    • A47L11/30—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction

Definitions

  • Double acting floor washing device The invention relates to a double acting floor washing device of that kind which is designed as a vacuum cleaner nozzle which can be connected to or built together with a vacuum cleaner suitable for wet vacuum cleaning, the purpose of the said device is to make floor washing, carpet washing, spot cleaning of carpets and sucking up water or moisture from surfaces, where the cleaning effect is improved by use of scraping plates, which can scrape water or other liquids a- long the floor towards the vacuum zone in the vacuum cleaner nozzle, where the floor washing device consists of a house with a pipe socket and spray nozzles or nozzle openings for applying water or detergents on floors or carpets, connected to the source of liquid in the vacuum cleaner.
  • the hitherto known nozzles for floor washing using wet va- cuum cleaners are often designed as a fishtail like vacuum cleaner nozzle, which on the front side away from the operator is provided with a scraping edge of rubber or rubber like material suitable to scrape off water on the floor.
  • the suction slot placed and af- ter this one or more spray nozzles for applying water on the floor.
  • the nozzle When the nozzle is moved in the direction towards the operator, the nozzle sprays water on the floor and the water, withdrawn by the scraping edge, is sucked up. If moved in the opposite direction, the functions perform in the wrong directions, as the scraping comes first, then the suck-up nozzle and at least the spray function. This cause the operator has to lift up the nozzle from the floor and moves it forward to make a new operation and at the same time stops applying water on the floor. This movement is awkward and unnecessary physical straining to the operator besides more than 50% of the operation is inefficient work.
  • the known inventions dealing with this problem are not including scraping plates or other devices, which efficiently scrape water towards the suction zone in the vacuum cleaner nozzle when moved in the one direction without touching the water film, when moved in the other direction. Therefore, they are not double acting during the working operations and require the use of unnecessary physical forces, tilting the vacuum cleaner nozzle or activating the trigger of the spray nozzle during the work. They are not provided with double acting suction channels, the purpose of which is to concen- trate the extraction close to the water accumulation zone at the scraping plate in order to increase the cleaning efficiency and to reduce the use of manpower and liquids.
  • a double acting floor cleaning device of the in the introduction mentioned nature which procures the described qualities, according to which the floor washing device is provided with a set of double acting scraping plates after which the one scraping plate always is scraping the water towards the suction zone but where the o- ther scraping plate always is rised so it does not touch the water film, pushing it away from the suction zone.
  • the floor washing device includes a central placed liquid spray system, protected against needless loss of liquids by a cover and of guiding plates.
  • the double acting floor washing device can with advantage be provided with self cleaning rollers designed as described in DK patent no.167423. Likewise it will be an important improvement, if the floor washing device is provided with vibrator functions, as described in Danish and International Patent Applications, after which the liquid can be applied with increased cleaning effect and decreased use of liquids. If the double acting floor washing device is used in connection with an universal vacuum cleaner using water as filter- media, including a detergent container, fresh and clean liquid always is sprayed on the floor and extracted through the air washing system, the maximum of efficiency and sani- tary qualities is obtained.
  • this invention is procured a double acting floor cleaning device, which can be used for washing of floors, either they are covered with hard boards, wood, tiles or textiles, and is reducing labour and material cost and improves the sanitary standard essential, with regard to the cleaning job itself but also with regard to the working environments.
  • the floor washing device is provided with one from outside incoming source of water or detergent is carried through one or more connecting pipes, often two pipes, carried through the top side of the house, the supporting studs and the cover, which are placed in the middle between the two scraping plates, running parallel to and in the full length of these from gable to gable inside the house, has a box shaped cross section closed at the three sides but open towards the floor and of such dimensi- ons, the water film below the cover, may pass and where the said connecting pipes are connected to a distributor pipe, provided with nozzles or nozzle openings and placed inside of the cover, below the top side and parallel with floor.
  • a distributor pipe provided with nozzles or nozzle openings and placed inside of the cover, below the top side and parallel with floor.
  • the double acting floor washing device provided with two or more guiding plates preferably two guiding plates, positioned parallel to the cover in the full length of this, which plates protrude from the un- derside of the house and is carried down towards the floor surface so far, an air gap appears between the lower edge of the guiding plates and the floor similar to the distance below the lifted scraping plate allows the water film to pass.
  • each of the two scraping plates hanged turnable in their top edge, provided with a trough-shaped suction channel, which has triangular shaped cross section, is placed on that side of the scraping plates pointing towards the tranverse running center line of the house made in the full length of the scraping plate, is provided with a narrow slot, pointing downwards against the floor close to the water accumulating zone at the front side of the active scraping plate, and provided with a wide slot pointing upwards against the suction zone in the nozzle house and where the length and the shape of the sides in the triangular cross section are so designed, the edge of channel, when the scraping plate is turned to scraping position, touches the one side of box shaped cover at the contact point, the edge of which can be provided with a rubber lining to make it airtight, and where the lower part of the other scraping plate, when turned to its lifted position, touches the lower part of the other side of the box shaped cover and by this make an airt
  • the cleaning effect of the applied liquid can be improved essential, if the floor washing device is provided with e- lectric, pneumatic or hydraulic operated vibrators, possibly producing high frequency vibrations.
  • FIG. 1A shows the cross section of a scraping plate 1, the upper edge of which 2 is placed in an inside groove 3 in the house of the washing device 4, only shown partly, transversely positioned in relation to the working direction of the device in the whole inside length of this.
  • the scraping plate 1 is in this form of carrying out made of rubber or a similar elastic material.
  • the plate 1 is so high in relation to the distance between the underside of the house 4 and the floor surface 6, that the plate is kept in pressure and de- scribes a slight bend, after which the lower edge of the plate 1 is pressed against the floor surface 6.
  • the angle VI which the plate 1 forms in relation to the floor surface 6, will typical be 90 degrees or more.
  • the lifting devices are designed as narrow fins 5, protruding perpendicular or nearly perpendicular from the flat surface of the plate 1 and after which the distance H from the plate surface to the contact point against the floor surface 6 is of such a size, the plate is lifted up over the floor surface in the distance S, which has to be of sufficient size, so a heavy carpet shampoo foam can pass by, normally proportional to 2 - 5 mm.
  • the number of fins 5 might be one or more, preferably two, which might be placed in each end of the plate 1 in the lower edge of this.
  • Figure IB shows the scraping plate 1, when the device is moved in direction as indicated by the arrow R2.
  • the plate 1 is kept in pressure between the house 4 and the floor surface 6, the plate 1 is going to turn over in such a way, the angle of the plate V2 to the surface 6 will be less than 90 degrees, after which the contact point of the lifting fins 5 contacts the floor surface 6, after which the lower edge of the plate 1 is arised over the surface to the distance S, after which the water film 7 can pass unhindered.
  • FIG 2 is shown a form of carrying out in cross section and longitudinal section of a scraping plate, identical with the on figures 1A and IB shown scraping plate 1, but after which the plate is made of a rigid material, for which reason the plate 1 is hanged in the top edge 2, turnable round the axis 8 such, it can be fitted in the house 4 by means of pivot pins and holes 9 or by means of other known technic. Thereby the plate might turn and take in the angles VI and V2 in relation to the floor surface, depending of which direction the floor washing device is moved.
  • the lifting fins 5 are placed in the ends of the plate and provided with an interchangeable scraping plate 10 made of rubber or other flexible materials, suitable for the purpose.
  • the loose scraping element can be composed of more thinner plates of known construction.
  • FIG 3 On figure 3 is shown a form of carrying out of the double acting floor washing device on which the shown cross section is placed at that point, where one of the inlet pipes 12 is carried into the house 4.
  • the in figure 2 described scraping plates 1 are placed in the house 4, mirror-inverted to each other.
  • the house 4 is provided with a pipe socket 11, connected to a vacuum cleaner, by which the extraction of water and air occurs as indicated at the arrow A through the pipe socket 11.
  • the two inlet pipes 12 are carried through the top side of the house at two points, symmetrical to the pipe socket 11, down through the supporting studs 16 and the cover 15, which is placed between the two scraping plates figure 2 and transverse positioned in relation to the wor- king direction inside the house 4 in its full extend and has a box shaped cross section, closed at the three of the sides but open against the floor surface and after which the said distributor pipe 13, including its nozzles or nozzle openings 14, is placed inside the cover 15, parallel to the floor surface 6.
  • the cover is fastened to the supporting studs 16, which have a cylindrical cross section and are provided with threads 17 and nuts 18 in the top, by which the cover, supporting studs, inlet pipes and distributor pipe can be fastened to the house of the floor washing device.
  • the gable pieces 21 in the house 4 are made so much higher than the transverse pieces 22, that the air space which appears, corresponds to the height S below the edge of the scraping plates, when these are lifted up from the floor surface.
  • supporting springs might be fitted as shown at 20, which also draw the contact point of the lifting fins against the inner side of the house, after which the further angular displacement is blocked, when the moving direction is as shown at the arrow R2, and the opposite scraping plate is kept tight against the floor surface either of the spring 20 or by the contact with the guiding plate 19.
  • the floor washing device When the floor washing device is moved along the floor surface by the user, the latter can apply water or detergent to the floor surface by activating the water spray unit, build into the vacuum cleaner.
  • the box shaped cover allows the water film to pass by and reduces at the same time, the risk of the liquid to be extracted before it is applied to the floor surface.
  • In the washing device is installed guiding plates 19, fastened to the underside of the house 4 and carried from gable to gable in the whole length of the house and carried down against the floor surface so far, that a slot of the same height as the distance S appears. By this the air speed in the area along the floor surface 6 and the water film 7 is accelerated, as indicated by the arrows a, which increase the effect of the extraction capability.
  • the one scraping plate withdraws water and dirt towards the suction zone, whereafter it is extracted through the pipe socket 11, as indicated at the arrow A, meanwhile the other scraping plate is lifted up over the water film.
  • the floor washing device When the floor washing device is moved in the opposite direction, the scraping plates are working opposite. By this, the floor washing device becomes double acting, as both scraping-off and extraction of water and dirt are carried out in both moving directions, besides, water or detergents may be applied, by activating the operating lever for spraying. When the user decides the necessary quantity of liquid is applied, the activating stops and the extraction continues, until the floor surface is dry.
  • the contour of the lifting fins may be designed in different ways, as it especially is the contact point against the floor surface which is important. If the floor washing device is used on long pile rugs, it might be convenient to design the contour of the contact point as a slight bend or a section of a circular disk. Likewise rollers or wheels might be fitted to the pointed end of the lifting fins if it is considered necessary because of the pressure of the lifting fins against the floor surface.
  • the lifting fins may also be considered made as wire brackets of the said contour. The thickness of the lifting fins is not very important, especially if they are placed in the ends of the scraping plate.
  • FIG 4 On figure 4 is shown a form of carrying out which is similar to the in figure 3 shown form apart from, the guiding plates are replaced by trough-shaped suction channels Tl and T2, mounted on the scraping plates Fig.l and Fig.2, made in the same length of these.
  • the narrow slot in the bottom of the channel is pointing towards the floor as close as possible to the suction zone W in order to obtain the best suction effect of the withdrawn water and dirt in front of the scraping plate.
  • the water film 7 occurs either from water or de- tergent sprayed on the floor immediate before by the spray nozzle or liquid already applied to the floor.
  • the sucked in airstrea gets in at the airgap in the front end Rl when the washing device is moved in the shown direction, pass along the water film 7 on the floor surface 6, through the narrow slot of the suction channel at Tl and is evacuated through the wide slot of the channel, indicated by the arrows a, out of the house 4 and the pipe socket 11 by the vacuum cleaner.
  • the suction channels Tl is open, it makes an airtight contact at Cl by means of a rubber lining on the edge of the channel, and the closed channel T2 makes an airtight contact at C2 by means of the rubber part of the scraping plate.
  • the air speed is increased and by this the suction power. After this it is possible either to increase the cleaning effect or to reduce the size of the air pump in the vacuum cleaner.

Abstract

Floor washing device designed as a vacuum cleaner nozzle, which can be connected to or built together with a vacuum cleaner suitable for wet vacuum cleaning, the purpose of which is to make floor washing, carpet washing or sucking up water from floors, applied by the built-in waterspray system and provided with a set of double acting scraping plates, which according to the invention are so designed, the one scraping plate always scrapes the water towards the suction zone in the vacuum cleaner nozzle and the other one is raised so it does not touch the water film on the floor, and where the functions of the plates are reversed when the working directions are reversed. The floor washing device may be provided with air guiding plates or with turnable suction channels, mounted on the scraping plates in order to improve the suction efficiency and to reduce the consumption of water or detergents.

Description

Double acting floor washing device The invention relates to a double acting floor washing device of that kind which is designed as a vacuum cleaner nozzle which can be connected to or built together with a vacuum cleaner suitable for wet vacuum cleaning, the purpose of the said device is to make floor washing, carpet washing, spot cleaning of carpets and sucking up water or moisture from surfaces, where the cleaning effect is improved by use of scraping plates, which can scrape water or other liquids a- long the floor towards the vacuum zone in the vacuum cleaner nozzle, where the floor washing device consists of a house with a pipe socket and spray nozzles or nozzle openings for applying water or detergents on floors or carpets, connected to the source of liquid in the vacuum cleaner.
The old fashioned floor washing by using a bucket with water and soap, floor cloth, scrubbing-brush and a lot of manpower is improved by using a more modern form of the system by u- sing special designed interchangeable mops fitted on mechanized scrubbing and wrings devices. But still the consumpti- on of manpower , water and detergents is high and the sanitary standard unacceptable low, both with regard to the cleaning jobs and with regard to the working invironment.
The hitherto known nozzles for floor washing using wet va- cuum cleaners are often designed as a fishtail like vacuum cleaner nozzle, which on the front side away from the operator is provided with a scraping edge of rubber or rubber like material suitable to scrape off water on the floor. Just behind the scraping plate is the suction slot placed and af- ter this one or more spray nozzles for applying water on the floor. When the nozzle is moved in the direction towards the operator, the nozzle sprays water on the floor and the water, withdrawn by the scraping edge, is sucked up. If moved in the opposite direction, the functions perform in the wrong directions, as the scraping comes first, then the suck-up nozzle and at least the spray function. This cause the operator has to lift up the nozzle from the floor and moves it forward to make a new operation and at the same time stops applying water on the floor. This movement is awkward and unnecessary physical straining to the operator besides more than 50% of the operation is inefficient work.
The known inventions dealing with this problem are not including scraping plates or other devices, which efficiently scrape water towards the suction zone in the vacuum cleaner nozzle when moved in the one direction without touching the water film, when moved in the other direction. Therefore, they are not double acting during the working operations and require the use of unnecessary physical forces, tilting the vacuum cleaner nozzle or activating the trigger of the spray nozzle during the work. They are not provided with double acting suction channels, the purpose of which is to concen- trate the extraction close to the water accumulation zone at the scraping plate in order to increase the cleaning efficiency and to reduce the use of manpower and liquids.
The up to now known inventions do not procure the in the introduction described qualities in one and the same' double acting floor washing device.
By the invention is provided a double acting floor cleaning device of the in the introduction mentioned nature which procures the described qualities, according to which the floor washing device is provided with a set of double acting scraping plates after which the one scraping plate always is scraping the water towards the suction zone but where the o- ther scraping plate always is rised so it does not touch the water film, pushing it away from the suction zone. The floor washing device includes a central placed liquid spray system, protected against needless loss of liquids by a cover and of guiding plates. It can also be provided with moveable trough shaped suction channels mounted on the scraping pla- tes close to the accumulated water at the front of the active scraping plate and where the suction channel at the inac- active scraping plate is closed, when the other one is open. By this the air speed is increased and concentrated to the relevant suction place, which increases the cleaning effect.
The double acting floor washing device can with advantage be provided with self cleaning rollers designed as described in DK patent no.167423. Likewise it will be an important improvement, if the floor washing device is provided with vibrator functions, as described in Danish and International Patent Applications, after which the liquid can be applied with increased cleaning effect and decreased use of liquids. If the double acting floor washing device is used in connection with an universal vacuum cleaner using water as filter- media, including a detergent container, fresh and clean liquid always is sprayed on the floor and extracted through the air washing system, the maximum of efficiency and sani- tary qualities is obtained.
By this invention is procured a double acting floor cleaning device, which can be used for washing of floors, either they are covered with hard boards, wood, tiles or textiles, and is reducing labour and material cost and improves the sanitary standard essential, with regard to the cleaning job itself but also with regard to the working environments.
This is obtained according to the invention thereby, in the double acting floor washing device is placed a set of one or two preferably two scraping plates, flexible fastened in the upper edge, symmetric in relation to the transverse running center axis of the house and parallel to this in such a way, the angles which the plates form in relation to floor sur- face is changing concurrent, when the washing device is moved forward or backwards in the working directions and where the scraping plates are provided with one or more lifting devices, placed on the one side of the plate and protruding from this in such a way, the perpendicular distance from the contact point of the lifting device to the lower edge of the scraping plate, has such a height, that the lower edge is rised so much over the floor surface when the plate is moved in the one direction and by this forms a pointed angle in relation to the floor surface, that the plate does not touch the water film on the floor, but when the scraping plate is moved in the opposite direction and by this forms an obtuse angle to the floor, the scraping plate is locked and pressed towards the floor and on this way scrapes off the water and withdraws it along the floor surface towards the suction zone and as a consequence of this, if a set of two scraping plates are placed mirror-inverted inside the house of the floor washing device, the one plate always withdraws water towards the suction zone and the other plate always is rised so much over the floor, that the water film unhindered can pass below the lower edge of the scraping plate, indepent of the working directions of the floor washing device and where this function is made possible because the gables are made so much higher than the front and rear transverse pieces of the house, that an air gap between the lower edge of the said tranverse pieces and the floor rises, similar to the distance below the lifted scraping plate.
In a form of carrying out, the floor washing device is provided with one from outside incoming source of water or detergent is carried through one or more connecting pipes, often two pipes, carried through the top side of the house, the supporting studs and the cover, which are placed in the middle between the two scraping plates, running parallel to and in the full length of these from gable to gable inside the house, has a box shaped cross section closed at the three sides but open towards the floor and of such dimensi- ons, the water film below the cover, may pass and where the said connecting pipes are connected to a distributor pipe, provided with nozzles or nozzle openings and placed inside of the cover, below the top side and parallel with floor.
In a form of carrying out is the double acting floor washing device provided with two or more guiding plates preferably two guiding plates, positioned parallel to the cover in the full length of this, which plates protrude from the un- derside of the house and is carried down towards the floor surface so far, an air gap appears between the lower edge of the guiding plates and the floor similar to the distance below the lifted scraping plate allows the water film to pass.
In a form of carrying out of the floor washing device is each of the two scraping plates, hanged turnable in their top edge, provided with a trough-shaped suction channel, which has triangular shaped cross section, is placed on that side of the scraping plates pointing towards the tranverse running center line of the house made in the full length of the scraping plate, is provided with a narrow slot, pointing downwards against the floor close to the water accumulating zone at the front side of the active scraping plate, and provided with a wide slot pointing upwards against the suction zone in the nozzle house and where the length and the shape of the sides in the triangular cross section are so designed, the edge of channel, when the scraping plate is turned to scraping position, touches the one side of box shaped cover at the contact point, the edge of which can be provided with a rubber lining to make it airtight, and where the lower part of the other scraping plate, when turned to its lifted position, touches the lower part of the other side of the box shaped cover and by this make an airtight con- tact at the contact point and after which the scraping plates and their suction channels are so designed and dimensioned, they unhindered can swing round there pivot points, so they perform the described double acting functions, when the floor washing device is moved in both forward and back- wards directions.
The cleaning effect of the applied liquid can be improved essential, if the floor washing device is provided with e- lectric, pneumatic or hydraulic operated vibrators, possibly producing high frequency vibrations.
The invention is explained in the following with reference to the enclosed drawings on figures 1A, IB, 2, 3 and 4. Figure 1A shows the cross section of a scraping plate 1, the upper edge of which 2 is placed in an inside groove 3 in the house of the washing device 4, only shown partly, transversely positioned in relation to the working direction of the device in the whole inside length of this. The scraping plate 1 is in this form of carrying out made of rubber or a similar elastic material. The plate 1 is so high in relation to the distance between the underside of the house 4 and the floor surface 6, that the plate is kept in pressure and de- scribes a slight bend, after which the lower edge of the plate 1 is pressed against the floor surface 6. The angle VI, which the plate 1 forms in relation to the floor surface 6, will typical be 90 degrees or more. The lifting devices are designed as narrow fins 5, protruding perpendicular or nearly perpendicular from the flat surface of the plate 1 and after which the distance H from the plate surface to the contact point against the floor surface 6 is of such a size, the plate is lifted up over the floor surface in the distance S, which has to be of sufficient size, so a heavy carpet shampoo foam can pass by, normally proportional to 2 - 5 mm. The number of fins 5 might be one or more, preferably two, which might be placed in each end of the plate 1 in the lower edge of this. When the double acting floor washing device is moved along in the direction as indicated at the arrow Rl, the pressure between the lower edge of the plate 1 and the floor surface 6 causing the water film 7 is withdrawn in the moving direction.
Figure IB shows the scraping plate 1, when the device is moved in direction as indicated by the arrow R2. As the plate 1 is kept in pressure between the house 4 and the floor surface 6, the plate 1 is going to turn over in such a way, the angle of the plate V2 to the surface 6 will be less than 90 degrees, after which the contact point of the lifting fins 5 contacts the floor surface 6, after which the lower edge of the plate 1 is arised over the surface to the distance S, after which the water film 7 can pass unhindered. In figure 2 is shown a form of carrying out in cross section and longitudinal section of a scraping plate, identical with the on figures 1A and IB shown scraping plate 1, but after which the plate is made of a rigid material, for which reason the plate 1 is hanged in the top edge 2, turnable round the axis 8 such, it can be fitted in the house 4 by means of pivot pins and holes 9 or by means of other known technic. Thereby the plate might turn and take in the angles VI and V2 in relation to the floor surface, depending of which direction the floor washing device is moved. The lifting fins 5 are placed in the ends of the plate and provided with an interchangeable scraping plate 10 made of rubber or other flexible materials, suitable for the purpose. The loose scraping element can be composed of more thinner plates of known construction.
On figure 3 is shown a form of carrying out of the double acting floor washing device on which the shown cross section is placed at that point, where one of the inlet pipes 12 is carried into the house 4. The in figure 2 described scraping plates 1 are placed in the house 4, mirror-inverted to each other. The house 4 is provided with a pipe socket 11, connected to a vacuum cleaner, by which the extraction of water and air occurs as indicated at the arrow A through the pipe socket 11. The two inlet pipes 12 are carried through the top side of the house at two points, symmetrical to the pipe socket 11, down through the supporting studs 16 and the cover 15, which is placed between the two scraping plates figure 2 and transverse positioned in relation to the wor- king direction inside the house 4 in its full extend and has a box shaped cross section, closed at the three of the sides but open against the floor surface and after which the said distributor pipe 13, including its nozzles or nozzle openings 14, is placed inside the cover 15, parallel to the floor surface 6. The cover is fastened to the supporting studs 16, which have a cylindrical cross section and are provided with threads 17 and nuts 18 in the top, by which the cover, supporting studs, inlet pipes and distributor pipe can be fastened to the house of the floor washing device. The gable pieces 21 in the house 4 are made so much higher than the transverse pieces 22, that the air space which appears, corresponds to the height S below the edge of the scraping plates, when these are lifted up from the floor surface. To assist the scraping plates to turn, when the moving direction is changed, supporting springs might be fitted as shown at 20, which also draw the contact point of the lifting fins against the inner side of the house, after which the further angular displacement is blocked, when the moving direction is as shown at the arrow R2, and the opposite scraping plate is kept tight against the floor surface either of the spring 20 or by the contact with the guiding plate 19.
When the floor washing device is moved along the floor surface by the user, the latter can apply water or detergent to the floor surface by activating the water spray unit, build into the vacuum cleaner. The box shaped cover allows the water film to pass by and reduces at the same time, the risk of the liquid to be extracted before it is applied to the floor surface. In the washing device is installed guiding plates 19, fastened to the underside of the house 4 and carried from gable to gable in the whole length of the house and carried down against the floor surface so far, that a slot of the same height as the distance S appears. By this the air speed in the area along the floor surface 6 and the water film 7 is accelerated, as indicated by the arrows a, which increase the effect of the extraction capability. When the floor washing device is moved along the floor sur- face in the direction, as indicated at the arrow Rl, the one scraping plate withdraws water and dirt towards the suction zone, whereafter it is extracted through the pipe socket 11, as indicated at the arrow A, meanwhile the other scraping plate is lifted up over the water film.
When the floor washing device is moved in the opposite direction, the scraping plates are working opposite. By this, the floor washing device becomes double acting, as both scraping-off and extraction of water and dirt are carried out in both moving directions, besides, water or detergents may be applied, by activating the operating lever for spraying. When the user decides the necessary quantity of liquid is applied, the activating stops and the extraction continues, until the floor surface is dry.
The contour of the lifting fins may be designed in different ways, as it especially is the contact point against the floor surface which is important. If the floor washing device is used on long pile rugs, it might be convenient to design the contour of the contact point as a slight bend or a section of a circular disk. Likewise rollers or wheels might be fitted to the pointed end of the lifting fins if it is considered necessary because of the pressure of the lifting fins against the floor surface. The lifting fins may also be considered made as wire brackets of the said contour. The thickness of the lifting fins is not very important, especially if they are placed in the ends of the scraping plate.
On figure 4 is shown a form of carrying out which is similar to the in figure 3 shown form apart from, the guiding plates are replaced by trough-shaped suction channels Tl and T2, mounted on the scraping plates Fig.l and Fig.2, made in the same length of these. The narrow slot in the bottom of the channel is pointing towards the floor as close as possible to the suction zone W in order to obtain the best suction effect of the withdrawn water and dirt in front of the scraping plate. The water film 7 occurs either from water or de- tergent sprayed on the floor immediate before by the spray nozzle or liquid already applied to the floor. The sucked in airstrea gets in at the airgap in the front end Rl when the washing device is moved in the shown direction, pass along the water film 7 on the floor surface 6, through the narrow slot of the suction channel at Tl and is evacuated through the wide slot of the channel, indicated by the arrows a, out of the house 4 and the pipe socket 11 by the vacuum cleaner. When the suction channels Tl is open, it makes an airtight contact at Cl by means of a rubber lining on the edge of the channel, and the closed channel T2 makes an airtight contact at C2 by means of the rubber part of the scraping plate. As only one of the channels is open and the other is closed at the same time, the air speed is increased and by this the suction power. After this it is possible either to increase the cleaning effect or to reduce the size of the air pump in the vacuum cleaner.

Claims

C LAIMS
1. Double acting floor washing device of the in the introduction named nature including the in this described qualities, designed as a vacuum cleaner nozzle, which can be connected to or built together with a vacuum cleaner suitable for wet vacuum cleaning, the purpose of the said device is to make floor washing, carpet washing, spot cleaning of carpets and sucking up water or moisture from surfaces, where it is suitable to use scraping plates to scrape water or other liquids along the floor towards the vacuum zone (a) in the vacuum cleaner nozzle and where the floor washing device consists of a house (4) a pipe socket (11) and with spray nozzle or nozzle openings (14) connected to the source of liquid in the vacuum cleaner c h a r a c t e r i z e d in that, in the double acting floor washing device is placed a set of one or two preferably two scraping plates (1), flexible fastened in the upper edge at (2), symmetric in relation to the transverse running center axis (C) of the house (4) and parallel to this in such a way, the angles (VI) and (V2) which the plates form in relation to floor surface (6) is changing concurrent, when the washing device is moved forward or backwards in the working directions and where the scraping plates (1) are provided with one or more lifting devices (5), placed on the one side of the plate and protruding from this in such a way, the perpendicular distance from the contact point of the lifting device (5) to the lower edge of the scraping plate (1) has such a height (H), that the lower edge is rised so much (S) over the floor surface (6) when the plate is moved in the one direction (R2), and by this forms a pointed angle (V2) in relation to the floor surface (6), that the plate does not touch the water film (7) on the floor, but when the scraping plate (1) is moved in the opposite direction (Rl) and by this forms an obtuse angle (VI) to the floor (6) the scraping plate (1) is locked and is pressed towards the floor and on this way scrapes off the water and withdraws it along the floor surface towards the suction zone (a) and as a consequent of this, if a set of two scraping plates (1) are placed mirror-inverted inside the house (4) of the floor washing device, the one plate (1) always withdraws water towards the suction zone (a) and the other plate always is rised so much (S) over the floor (6) , that the water film (7) unhindered can pass below the lower edge of the scraping plate (1), independent of the working direction of the floor washing device, and where this function is made possible because the gables (21) are made so much higher than the front and rear transverse pieces (22) of the house (4), that an air gap between the lower edge of the said transverse pieces and the floor rises, similar to the distance (S).
2. Double acting floor washing device according to claim 1. c h a r a c t e r i z e d in that, one from outside incoming source of water or detergent is carried through one or more connecting pipes (12) often two pipes, carried through the topside of the house (4), the supporting studs (16) and the cover (15), which are placed in the middle between the two scraping plates (Fig.l) running parallel to and in the full length of these from gable to gable (21) inside the house (4) has a box shaped cross section closed on the three sides but open towards the floor (6) and of such dimensions, the water film (7) below the cover, may pass and where the said connecting pipes (12) are connected to a distributor pipe (13) provided with nozzles or nozzle openings (14) and placed inside of the cover (15), below the top side and parallel with the floor (6) .
3. Double acting floor washing device according to claim 1. c h a r a c t e r i z e d in that, the washing device is provided with two or more guiding plates (19) preferably two guiding plates positioned parallel to the cover (15) in the full length of this, which plates protude from the un- derside of the house (4) and is carried down towards the floor surface (6) so far, an air gap appears between the lower edge of the guiding plates and the floor, similar to the distance (S) allowing the water film (7) to pass.
4. Double acting floor washing device according to claim 1. and 2. c h a r a c t e r i z e d in that, each of the two scraping plates (Fig.2), hanged turnable in their top edge (8) is provided with a trough-shaped suction channel (T1-T2) which has a triangular shaped cross section, is placed on that side of the scraping plate pointing towards the transverse running center line (C) of the house (4) made in the full length of the scraping plate, is provided with a narrow slot, pointing downwards against the floor close to the wa- ter accumulation zone (W) at the front side of the active scraping plate, and provided with a wide slot pointing upwards against the suction zone (a) in the nozzle house (4) and where the length and the shape of the sides in the triangular cross section are so designed, the edge of the chan- nel, when the scraping plate is turned to scraping position (Tl) , touches the one side of the box shaped cover (15) at the contact point (Cl) , the edge of which can be provided with a rubber lining to make it airtight, and where the lower rubber part of the other scraping plate, when turned to its lifted position (T2) , touches the lower part of the o- ther side of the box shaped cover (15) and by this make an airtight contact at the contact point (C2) and after which the scraping plates (Fig.l and Fig.2) and their suction channels (Tl and T2) are so designed and dimensioned, they unhindered can swing round the point (8), so they perform the described double acting functions, when the floor washing device is moved in both forward and backwards directions (Rl and R2) .
PCT/DK1996/000549 1996-12-20 1996-12-20 Double acting floor washing device WO1998027856A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/DK1996/000549 WO1998027856A1 (en) 1996-12-20 1996-12-20 Double acting floor washing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DK1996/000549 WO1998027856A1 (en) 1996-12-20 1996-12-20 Double acting floor washing device

Publications (1)

Publication Number Publication Date
WO1998027856A1 true WO1998027856A1 (en) 1998-07-02

Family

ID=8155875

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1996/000549 WO1998027856A1 (en) 1996-12-20 1996-12-20 Double acting floor washing device

Country Status (1)

Country Link
WO (1) WO1998027856A1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001054555A1 (en) * 2000-01-29 2001-08-02 Alfred Kärcher GmbH & Co. Cleaning head for a floor-cleaning device
WO2005023076A1 (en) * 2003-09-05 2005-03-17 Reckitt Benckiser (Uk) Limited Cleaning device with cleaning head and cleaning product supply means
US6896742B2 (en) * 2001-05-31 2005-05-24 Tennant Company Brushless scrub head for surface maintenance
RU2444975C2 (en) * 2007-07-18 2012-03-20 Альфред Кэрхер Гмбх Унд Ко. Кг Dirt-capturing device for machine for cleaning floor, and machine for cleaning floor with such dirt-capturing device
EP2329755A3 (en) * 2009-12-03 2012-04-18 Bissell Homecare, Inc. Steam mop with shuttling steam distributor
WO2013002715A1 (en) * 2011-06-28 2013-01-03 Qleeno Ab Fluid system for cleaning machine
WO2018099567A1 (en) * 2016-12-01 2018-06-07 Alfred Kärcher Gmbh & Co. Kg Cleaning device and method for operating a cleaning device
EP3815593A4 (en) * 2019-08-01 2021-12-01 Shanxi Jiashida Robot Technology Co., Ltd Dust collector brush head and dust collection method
WO2023123773A1 (en) * 2021-12-31 2023-07-06 苏州威摩尔智能科技有限公司 Floor brush for floor scrubber, and floor scrubber

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0338773A2 (en) * 1988-04-22 1989-10-25 Tennant Company Scrubber squeegees for scrubbing forward and backward
US5212848A (en) * 1992-03-13 1993-05-25 Tennant Company Squeegee blade
WO1994006342A1 (en) * 1992-09-15 1994-03-31 Vax Limited Cleaning head

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0338773A2 (en) * 1988-04-22 1989-10-25 Tennant Company Scrubber squeegees for scrubbing forward and backward
US5212848A (en) * 1992-03-13 1993-05-25 Tennant Company Squeegee blade
WO1994006342A1 (en) * 1992-09-15 1994-03-31 Vax Limited Cleaning head

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001054555A1 (en) * 2000-01-29 2001-08-02 Alfred Kärcher GmbH & Co. Cleaning head for a floor-cleaning device
US6896742B2 (en) * 2001-05-31 2005-05-24 Tennant Company Brushless scrub head for surface maintenance
WO2005023076A1 (en) * 2003-09-05 2005-03-17 Reckitt Benckiser (Uk) Limited Cleaning device with cleaning head and cleaning product supply means
US8302254B2 (en) 2007-07-18 2012-11-06 Alfred Kaercher Gmbh & Co. Kg Dirt-collecting device for a floor-cleaning machine, and floor-cleaning machine having such a dirt-collecting device
RU2444975C2 (en) * 2007-07-18 2012-03-20 Альфред Кэрхер Гмбх Унд Ко. Кг Dirt-capturing device for machine for cleaning floor, and machine for cleaning floor with such dirt-capturing device
US8607404B2 (en) 2009-12-03 2013-12-17 Bissell Homecare, Inc. Steam cleaning apparatus
US8353074B2 (en) 2009-12-03 2013-01-15 Bissell Homecare, Inc. Steam mop with shuttling steam distributor
EP2329755A3 (en) * 2009-12-03 2012-04-18 Bissell Homecare, Inc. Steam mop with shuttling steam distributor
US8677552B2 (en) 2009-12-03 2014-03-25 Bissell Homecare, Inc. Steam cleaning apparatus
WO2013002715A1 (en) * 2011-06-28 2013-01-03 Qleeno Ab Fluid system for cleaning machine
US8925143B2 (en) 2011-06-28 2015-01-06 Qleeno Ab Fluid system for cleaning machine
EP2725960A4 (en) * 2011-06-28 2015-07-01 Qleeno Ab Fluid system for cleaning machine
WO2018099567A1 (en) * 2016-12-01 2018-06-07 Alfred Kärcher Gmbh & Co. Kg Cleaning device and method for operating a cleaning device
EP3815593A4 (en) * 2019-08-01 2021-12-01 Shanxi Jiashida Robot Technology Co., Ltd Dust collector brush head and dust collection method
JP2021533838A (en) * 2019-08-01 2021-12-09 山西嘉世達机器人技術有限公司Shanxi Jiashida Robot Technology Co., Ltd. Vacuum cleaner brush head and dust collection method
WO2023123773A1 (en) * 2021-12-31 2023-07-06 苏州威摩尔智能科技有限公司 Floor brush for floor scrubber, and floor scrubber

Similar Documents

Publication Publication Date Title
US5319828A (en) Low profile scrubber
EP0780084B1 (en) Wet cleaning suction nozzle
US3747155A (en) Nozzle construction for portable carpet cleaning machine
US4833752A (en) Vacuum mop head
RU2062602C1 (en) Sucking cleaning head
US7159275B2 (en) Glass surface cleaning machine
US5697119A (en) Accessory for a vacuum cleaner
CN210520894U (en) Cleaning and washing integrated cleaning device
WO1998027856A1 (en) Double acting floor washing device
KR101398554B1 (en) Push stick type cleaner
US4275478A (en) Extractor head for cleaning soft surfaces such as carpet or upholstry
US5970560A (en) Implement for simultaneously drying a surface and collecting a liquid
US4200952A (en) Device for cleaning floors by means of a liquid
US7137170B1 (en) Manual scrubber with vacuum pick-up
CN210810819U (en) Floor nozzle for a wet surface cleaning device
US20110005025A1 (en) Cleaning system
KR100938748B1 (en) Portable scrubber
US20030009843A1 (en) Automate glass surface cleaning machine
US2793384A (en) Cleaning tool for vacuum cleaners
JP3790294B2 (en) Mat cleaner
EP0343129A2 (en) Device for cleaning surfaces, such as floor, with removal of the cleaning liquor
CN210612059U (en) Hand-held type mopping dust absorption all-in-one
CN218792075U (en) Scrubbing brush structure and cleaning device
JP2006006464A (en) Squeegee
KR20050088903A (en) Nozzle for a vacuum cleaner

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase