EP0822774B1 - Sauggerätevorsatz zur feuchtreinigung von flächen - Google Patents

Sauggerätevorsatz zur feuchtreinigung von flächen Download PDF

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Publication number
EP0822774B1
EP0822774B1 EP96912017A EP96912017A EP0822774B1 EP 0822774 B1 EP0822774 B1 EP 0822774B1 EP 96912017 A EP96912017 A EP 96912017A EP 96912017 A EP96912017 A EP 96912017A EP 0822774 B1 EP0822774 B1 EP 0822774B1
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EP
European Patent Office
Prior art keywords
vacuum
liquid
attachment according
suction
cleaner attachment
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
EP96912017A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0822774A1 (de
Inventor
Antonio Delgado
Jürgen Thode
Ludger Graute
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.)
Vorwerk and Co Interholding GmbH
Original Assignee
Vorwerk and Co Interholding GmbH
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 DE19611371A external-priority patent/DE19611371A1/de
Application filed by Vorwerk and Co Interholding GmbH filed Critical Vorwerk and Co Interholding GmbH
Publication of EP0822774A1 publication Critical patent/EP0822774A1/de
Application granted granted Critical
Publication of EP0822774B1 publication Critical patent/EP0822774B1/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
    • A47L11/4013—Contaminants collecting devices, i.e. hoppers, tanks or the like
    • A47L11/4016—Contaminants collecting devices, i.e. hoppers, tanks or the like specially adapted for collecting fluids
    • A47L11/4022—Contaminants collecting devices, i.e. hoppers, tanks or the like specially adapted for collecting fluids with means for recycling the dirty liquid
    • 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
    • A47L1/00—Cleaning windows
    • A47L1/02—Power-driven machines or devices
    • 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
    • A47L11/38—Machines, specially adapted for cleaning walls, ceilings, roofs, or the like
    • 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
    • A47L11/4083—Liquid supply reservoirs; Preparation of the agents, e.g. mixing devices
    • 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
    • A47L11/4094—Accessories to be used in combination with conventional vacuum-cleaning devices

Definitions

  • the invention relates to a suction device attachment Wet cleaning of surfaces, especially vertical ones Surfaces, with a liquid application device, a suction channel having a suction channel mouth and a cleaning element.
  • the object of the present invention is a generic Suction device attachment for wet cleaning of Areas so improved that even at Use of the device on vertical surfaces or above even on surfaces whose surface normal vectors a non-vanishing component in opposite Direction of the gravitational vector, such as inclined Attic windows or living room ceilings that Cleaning the surface and vacuuming the cleaning liquid done in one operation.
  • a suction device attachment which enables continuous processing of surfaces, in particular vertical surfaces.
  • the liquid application device is designed for continuous delivery of liquid for continuous processing and the suction channel mouth is arranged downstream with respect to a processing direction for the liquid application device, the cleaning element being arranged in the area of the liquid application device or between the liquid application device and the suction channel.
  • vertical surfaces in particular hard surfaces, such as window surfaces, can also advantageously be cleaned in one operation.
  • the liquid application device is designed for the constant supply of liquid, the device according to the invention can be used regardless of an inclination of the surface to be cleaned and thus also on vertical surfaces. This also enables overhead work.
  • liquid is constantly transferred to the surface by means of the liquid application device, with the surface being cleaned first by means of the cleaning element in the course of a movement of the device in a processing direction and the dirt mixture being suctioned off immediately thereafter in the area of the suction channel.
  • the liquid application device is supplied with the liquid by means of capillary action. Due to this configuration according to the invention, active components for applying the cleaning liquid can be dispensed with. Active components are known in the form of pumps and spray nozzles, in which designs the disadvantage occurs that spraying on the cleaning solution only results in uneven moistening of the surface to be cleaned. Furthermore, other areas, such as window frames when cleaning windows, are also inadvertently sprayed on.
  • the cleaning solution runs down in drops or as a jet in the case of vertical and inclined surfaces, such as window surfaces.
  • this is optimally improved by the capillary transport.
  • an even application of cleaning agent is applied to the surface without a pump or other electromechanical or electronic aids.
  • the cleaning medium preferably water, alcohols or surface-active substances, is applied to the surface to be cleaned in such quantities by means of the liquid application device that, on the one hand, guarantees a good cleaning effect, but on the other hand prevents gravitational flow.
  • the amount required is in this case according to the invention at 2 to 10 g of water qm 2 hard surface. The invention thus allows large hard surfaces to be cleaned reliably with very small amounts of cleaning medium.
  • the liquid application device is subdivided into substructures with respect to the application surface. This division is preferably carried out in such a way that a continuous liquid application device, preferably extending over almost the entire width of the suction device attachment, is approximated.
  • the substructures can be, for example, honeycomb or triangular or also rectangular or circular.
  • the liquid application device consists of a tuft of bristles receiving a certain liquid supply. The latter can be designed continuously in the form of a bristle tuft strip, ie over almost the entire width of the suction device attachment.
  • tufts of bristles are also conceivable.
  • the cleaning agent is applied to the surface to be cleaned through the capillary wrap of the bristle tufts.
  • cleaning agents are only conveyed if the bristle tufts are in contact with a surface, for example with a window surface. If the bristles protrude from an underside of the suction attachment, it can be provided that the bristles are clasped in this area by a separate bristle holder, which prevents the bristles from fraying. It proves to be particularly advantageous that a tuft of bristles consists of bristles which form an angle of approximately 30-60 ° with the surface to be cleaned.
  • the bristles selected obliquely with respect to the surface to be cleaned they adapt to the surface to be cleaned by slightly bending them sideways over almost the entire bristle surface and thus, for example, compensate for manufacturing tolerances and unevenness on the surface to be cleaned.
  • the supply of the liquid application device, in particular the tufts of bristles takes place in that the liquid application device also extends into a capillary store, with a capillary action conveying out of the apillary store.
  • the invention allows a reliable cleaning of large areas with very small amounts of cleaning medium. This therefore makes it possible to store the required amount of the cleaning medium in a relatively small tank, such as a capillary store.
  • the capillary reservoir can hold 30 to 150 ml of cleaning liquid.
  • the capillary store is equipped with a transmission medium which at any time has at least local contact with the cleaning medium, ie the bristle tufts of the liquid application device.
  • the transmission medium is to be designed in its wetting properties and geometry in such a way that the capillary is transported from the capillary reservoir to the surface to be cleaned in the desired amount. According to the invention, the necessary adjustment is made via the choice of suitable materials, their surface treatment and the geometric design.
  • the capillary store consists of cotton wool, which ensures a constant supply of the bristle tufts due to the capillary action with cleaning liquid in every position of the suction device attachment.
  • the suction channel mouth is designed in the manner of a slot. It is preferred to connect the vacuum device attachment to a commercially available vacuum cleaner. To clean hard surfaces, especially vertical surfaces, the vacuum cleaner is switched on, after which the hard surface can be cleaned. During the cleaning process, cleaning liquid is applied to the surface to be cleaned by means of the application device and discharged again in the same operation via the suction channel.
  • the suction channel mouth has a width which corresponds to the width of the liquid application device, in particular a bristle tuft strip.
  • air speeds of 30 to 90 m per second are achieved in the suction area.
  • the negative pressure that arises at the mouth of the suction channel can be used to support the capillary transport of the cleaning medium from the capillary reservoir.
  • the suction channel or the suction channel mouth is arranged downstream of the liquid application device in the machining direction.
  • the attachment can be constructed symmetrically with respect to the liquid application device, in particular the bristle tuft strip, ie it can be provided with a second suction channel mouth.
  • the cleaning element forms a border of the mouth of the suction channel.
  • the cleaning element is arranged in the area between the liquid application device and the suction channel.
  • the cleaning element be provided with movable or local openings.
  • the cleaning element consists of a sealing element with cleaning fleece applied.
  • the latter has a large mechanical interaction with the surface to be cleaned.
  • the cleaning element can also consist of a sealing element with applied bristles, felt or the like. It is essential, however, that a water-repellent material is used.
  • the cleaning fleece or the like is preferably designed such that high shear forces are exerted on the dirt to be removed.
  • the sealing element of the cleaning element seals the suction channel to the liquid application device or the bristle tufts.
  • a further border of the suction channel mouth which is arranged downstream in the machining direction, consists of an air-impermeable lip.
  • the latter can be designed in the form of a rubber lip, which pulls the cleaning agent / dirt mixture off the surface when machining surfaces. Due to the high air speed in the suction channel, the mixture is transported away through the suction channel mouth, which counteracts dripping of dirty water after the suction device has been switched off from the suction device attachment.
  • the suction channel mouth consists of a large number of individual suction channel sections.
  • one type of configuration consists of a pull-off rubber which rests continuously on the surface to be cleaned in the form of the air-impermeable lip, which at the same time forms a boundary for the suction space on the side facing the cleaning element.
  • smaller branch channels in the form of suction channel sections lead from a main suction channel located in the interior of the nozzle directly to the pull-off rubber or to the air-impermeable lip.
  • the puncture channels cause an immediate drying of the lip, whereby water streaks when the lip is reattached, e.g. B. on window panes can be prevented.
  • a suction channel section is partially delimited by the lip.
  • the suction channel sections are arranged obliquely in such a way that they run inclined towards the suction channel.
  • the first lip is therefore followed by a second lip, viewed in the working direction.
  • the training is made so that the outer lip consists of a softer material than the inner.
  • a rubber lip is also preferred here, which is very flexible and which, because of its downstream arrangement, also rests on the pane during a peeling process, for example in the region of a window frame.
  • the outer lip is to be attached to the first lip in such a way that it does not rest on the surface to be cleaned, in particular the pane, during a normal pull-off operation and only when the attachment, eg. B. pulls off the window on a window frame.
  • the outer lip is formed at a greater distance from the surface to be cleaned in such a way that it does not come into contact with the surface to be cleaned in a normal cleaning process.
  • the lip on its side facing the liquid application device has channels that extend in the width direction of the lip and that expand in cross-section towards the suction channel. These channels are preferably arranged in the contact area of the lip with the surface to be cleaned.
  • a residual water wiper is formed further downstream of the lip. The latter absorbs any residual water remaining on the surface when cleaning is finished. This is done automatically by the removal process of the suction device attachment that takes place at the end of the wiping process.
  • the residual water wiper preferably consists of a commercially available, well water-absorbent, porous material in which residual water is absorbed by capillary action.
  • the negative pressure present in the suction channel in order to increase the volume of cleaning agent in the liquid application device.
  • a device part located between the mouth of the suction channel and the liquid application device is displaceably arranged in such a way that a suction channel cross section acting on the liquid application device can be formed or enlarged.
  • the suction channel and the liquid application device are spatially separated from one another, the cleaning liquid being brought onto the surface to be cleaned by means of capillary transport.
  • the spatial separation can be a displaceable device part which can be moved in order to increase the volume of cleaning agent in the liquid application device in such a way that the suction channel cross section is increased in the direction of the liquid application device.
  • the cleaning element arranged between the mouth of the suction channel and the liquid application device is designed as a displaceable device part. This cleaning element forms the spatial separation in the usual way. If necessary, this cleaning element can preferably be moved by the user, for example by pressing a button or a slide.
  • the displacement eliminates the spatial separation between the suction channel or the suction channel opening and the liquid application device, so that a negative pressure prevails at the latter relative to the bypass, whereby more cleaning liquid is conveyed through the capillary application device.
  • the liquid application device, the cleaning element and the suction channel mouth are arranged in a pivotable work holder. This training enables very good handling of the suction device attachment. This ensures an optimal adaptation of the suction surface to the spatial arrangement of the surface to be cleaned. It is also provided that the end faces of the liquid application device and the cleaning element and the end edge of the lip lie on one plane.
  • the suction channel runs through a filter for filtering out suctioned liquid from the suction air.
  • This filter separates dirt, cleaning medium and air. Accordingly, the dirt / cleaning medium suspension is separated in the filter.
  • This filter can be arranged in a suction device connection housing, with which the connection to a suction hose or the like of a suction device takes place. According to the invention it is proposed that the filter cooperate with a storage medium for filtering out, to form a liquid storage.
  • the air flow flowing from the suction device attachment to the vacuum cleaner can also be used to dry the dirt / cleaning medium suspension, so that the storage medium only stores small amounts of liquid and can therefore be made small in its dimensions.
  • the liquid reservoir can at least be formed from a porous medium, so that the condensed phase is reliably retained, but due to the large surface area of such media, as much cleaning liquid as possible is converted into the gaseous form by interaction with the air flow and entrained.
  • the porous medium which has capillary properties, can consist, for example, of cotton wool, sponge, clay granulate, paper, activated carbon or the like.
  • the storage medium has a fiber material which, through capillary action, possibly a tubular embodiment of the fibers, absorbs the moisture and releases it through micro-slots only by evaporation.
  • the storage medium can consist of textile fibers, which stores the liquid in micro-cavities, transports it by capillary action and conveys it to the surface through micro-channels or micro-openings, where it then evaporates quickly.
  • the fiber material is used as a buffer for the liquid.
  • the filter is limited in the suction direction by a liquid-impermeable membrane.
  • the filter must be designed in such a way that liquid drops on the membrane are transported away from the storage medium by the capillary action of the storage medium.
  • the suction air penetrates the storage medium in a labyrinth-like manner in such a way that, if appropriate by filtering out, liquid is separated by flow deflection.
  • the storage medium is open-cell foam and / or activated carbon.
  • the liquid reservoir is only delimited by a membrane and has no porous storage medium.
  • the suction can be triggered by a certain fill level of the liquid reservoir. If the fill level of the liquid store exceeds a certain level, there is a risk that any liquid from the store will get into the exhaust air flow leading to the vacuum cleaner.
  • a moisture sensor is arranged at a suitable point on the front attachment, for example immediately in front of the interface to the vacuum cleaner, which immediately interrupts the voltage supply when it comes into contact with condensed cleaning liquids.
  • Such moisture sensors are commercially available.
  • An embodiment is preferred in which a pressure drop resulting from the degree of filling of the liquid reservoir is used for the closing movement of a valve closing the suction channel.
  • a valve can, for example, be connected behind the already mentioned liquid-impermeable membrane in the suction direction. This type of configuration has the advantage that the membrane has to withstand a lower fluid retention pressure, as without a safety valve, since the safety valve closes and the membrane is relieved from an adjustable pressure difference.
  • the attachment can be used on almost all commercially available vacuum cleaners.
  • a valve front is used to support the membrane with a high degree of filling of the liquid reservoir. Due to this configuration, the membrane is mechanically supported at high liquid pressures. It is further proposed that the closing valve has a membrane base which is acted upon on the one hand by the pressure prevailing in front of the liquid-impermeable membrane and on the other hand by the pressure of the suction channel.
  • the differential pressure applied to the water-repellent but air-permeable membrane is transmitted to the elastic membrane base by means of a pressure equalization channel and a pressure equalization opening.
  • a pressure equalization channel and a pressure equalization opening This in turn actuates a tappet with a sealing cone arranged thereon, for example made of rubber.
  • the latter is held in an open position by means of a tension spring.
  • the sealing cone closes a passage opening in the area of the suction channel, relieving the pressure on the membrane. The suction air flow is then prevented, which also indicates to the user that the liquid storage has reached a maximum level.
  • the liquid store at least partially consist of a material, such as polyacrylate, which changes when the liquid is taken up in the sense of an increase in volume.
  • this binding can take place chemically or chemo-physically.
  • the water-binding medium is embedded in a porous cavity.
  • water-binding media are, for example, highly modular, technical substances such as polyacrylate or the like, but also natural products such as potato starch. When in contact with condensed water, the water-binding media change their state in such a way that they swell, so that a large pressure drop arises at them and the air volume flow ultimately comes to a standstill with increasing amount of water.
  • a separate flow path is formed in the source material.
  • the separate flow path is designed to change direction with a view to increasing the surface area. This results in a relatively large surface area for absorbing condensed matter.
  • the wall of the separate flow path consists partially or completely of the source material.
  • the design can be chosen so that a suitably shaped, water-impermeable carrier, for example closed-cell foam, forms the flow path, the wall of this separate flow path being coated with the swelling material.
  • the increase in volume of the water-binding medium reduces the gap width up to a complete interruption of the volume flow, thereby precluding any danger to the user.
  • the source material is preceded by a liquid-impermeable membrane.
  • the source material or the separate flow path equipped with this source material thus forms a safety device which is connected downstream of the liquid-impermeable membrane. If, for example, condensed media should pass through in the area of the membrane due to excessively high liquid pressures, these are taken up in the area of the securing section formed by the source material.
  • the liquid stored in the storage medium can be returned to the liquid application device.
  • This forms a closed circuit which allows the liquid taken up in the storage medium to be supplied to the capillary storage in the work holder for further capillary transport to the surface to be cleaned.
  • the suction power of the connected vacuum cleaner is therefore used to return the stored liquid to the liquid application device.
  • a switchable flow connection is formed between the blower side of the membrane and the capillary accumulator.
  • This switchable flow connection can be, for example, a flexible pipe or the like, which connection can be closed or opened, for example, by a suitable shut-off element. In an open position, the fluid accumulated in the fluid reservoir can be sucked back into the capillary reservoir via this flow connection.
  • the shut-off element which can be switched on the flow connection can be actuated, for example, by the user, who releases the connection when an appropriate control element is actuated.
  • a further, preferably flexible hose is provided for carrying out the back suction of liquid into the capillary store, which is arranged between the liquid store and the capillary store. This connection can also be switched in parallel with the flow connection, in order to prevent uncontrolled return of cleaning fluid from the capillary reservoir into the fluid reservoir.
  • An embodiment is preferred in which the flow connection is opened when the suction device attachment is not in a state in which it lies on the surface to be cleaned.
  • This has the consequence that in a position in which the suction device attachment is not in contact with the surface to be cleaned, the capillary reservoir is subjected to a greater negative pressure than prevails in the liquid reservoir, but only when the corresponding connections, for example the user, are open.
  • the activation be carried out by actuating an activation switch. In order to achieve a return of the liquid from the liquid store into the capillary store by means of suction, only the corresponding connections of the flow path and the liquid path are opened.
  • the greater negative pressure now present at the capillary store causes the liquid to be sucked out of the liquid store through the opened connection to the capillary store.
  • the open flow connection which is arranged at one end and via which air is sucked in, preferably has an air-impermeable membrane.
  • a push button switch be formed on the suction device attachment, which releases the flow connection when it is lifted off the surface to be cleaned. Due to this configuration, the handling device is handled safely, since when the device is placed on a surface to be cleaned, suitable shut-off elements are closed in the area of the flow connection and possibly in the area of a liquid connection.
  • the cleaning liquid which has been sucked into the liquid reservoir and mixed with dirt particles must firstly travel a sufficiently long way through the storage medium before it can be fed back to the liquid application device via the liquid return.
  • the negative pressure which arises at the mouth of the suction channel can be used to supply the cleaning liquid to the capillary reservoir of the liquid application device after filtering the dirt, so that a closed circuit is created and large hard surfaces can therefore be cleaned with small amounts of cleaning liquids.
  • the suction device attachment is to be designed according to the invention such that the vacuum at the mouth of the suction channel is greater in magnitude for each position of use of the suction device attachment than the vacuum in front of the storage medium plus pressure drop in the filter and in the capillary medium.
  • the suction channel be formed in the area between the work holder and the device connection housing having the filter by means of a thin, flexible hose or the like in order to form the pivotable arrangement of the work holder.
  • the liquid storage device is equipped with a level indicator.
  • a transparent pane can be provided on an upper side of the connection housing.
  • the level indicator is designed as a capillary sensor. The latter can change the color or other optical properties, such as light reflection, depending on the liquid charge of the storage medium.
  • the liquid storage device is equipped with a vacuum sensor for detecting the loading condition.
  • a vacuum sensor for detecting the loading condition.
  • a water film forms on the membrane arranged at the end of the filter in the suction flow direction, which causes an increase in the negative pressure on the suction side of the membrane.
  • This negative pressure is detected by means of the negative pressure sensor, which automatically interrupts the suction of air and liquid, so that no liquid can drip from the suction device attachment after the suction device has been switched off.
  • the liquid supply is first interrupted by lifting off the liquid application device.
  • the cleaning unit and the sealing lip are also lifted off. Only the suction channel mouth still lies on the surface, the side of the suction channel mouth edge facing the liquid application device extending accordingly. Residual liquids and dirt can now be suctioned off without new cleaning liquid flowing in. It is provided here that the movable edge of the suction channel opening can be moved essentially in the suction direction.
  • the material of the comb-like sealing elements is preferably a water-repellent, commercially available plastic.
  • the front edge is pivotally mounted in the work holder.
  • the rear edge is formed in a plow-like manner to form narrowly delimited suction channels.
  • a comb is also formed on a rear edge, which, however, only takes effect when the work holder is tilted from the surface, the front edge of the suction channel mouth, due to the pivoting mobility, stepping with its comb against the surface to be extracted. So there is a simple way to suck up residual liquid and dirt at the end of the cleaning process.
  • the liquid application device is displaceable with respect to the lip in such a way that the liquid application device can be moved towards or away from the surface to be cleaned.
  • This design also enables good handling of the suction device attachment with optimal adaptation of the suction surface to the spatial arrangement of the surface to be cleaned. Due to the displaceability of the liquid application device relative to the lip, both the liquid application device and the lip always remain in contact with the surface to be cleaned during the cleaning. When the suction device attachment is placed at a relatively acute angle to the surface to be cleaned, the action on the liquid application device by the surface to be cleaned causes the liquid application device to be pushed back.
  • the contact between the liquid application device and the lip with the surface to be cleaned is also not resolved in the course of the cleaning movement, even if the user tilts the suction device attachment in the course of this cleaning movement in such a way that a new angle between the attachment and of the surface to be cleaned.
  • the suction device attachment according to the invention can be used on the surface to be cleaned independently of the attachment angle and thus offers improved handling. It is further proposed that the liquid application device can be displaced with the capillary store. The liquid application device and the capillary reservoir are considered as a single component and are moved together to change the position relative to the lip. As a result, there is no need for complex sealing formations which would be required if the liquid application device were only displaceable.
  • the suction channel is designed to be stationary and that the liquid application device with the capillary reservoir is arranged displaceably on the suction channel.
  • An embodiment is preferred in which the suction channel with its suction channel mouth and the lip are formed as a coherent component. It follows from this that the lip and the mouth of the suction channel are also fixed in relation to the liquid application device.
  • the suction channel emanating from the mouth of the suction channel is preferably used as a guide element for the displaceable liquid application device. It proves advantageous here that the liquid application device can be moved back against a spring. The latter always brings about an independent return of the liquid application device to a basic position. The deliberate shift is only possible against the spring force.
  • this spring force is designed so that the displacement of the liquid application device and the capillary reservoir coupled to it can be carried out without great effort, for example in the course of a cleaning movement by a tilting movement of the suction device attachment brought about by the user.
  • the spring is arranged concentrically with the suction channel.
  • the liquid application device, including the capillary reservoir if necessary is held on the suction channel via a sleeve-like connecting element.
  • this sleeve-like connecting element comprises the suction channel and carries the liquid application device together with the capillary reservoir.
  • a spring surrounding the suction channel acts on the sleeve-like connecting element in such a way that the liquid application device, including the capillary reservoir, if applicable, is placed in a foremost position that contacts the surface to be cleaned.
  • the suction device attachment can be tilted over an angular range of approximately 40 ° without the lip and the moisture application device losing contact with the surface to be cleaned. It proves to be particularly advantageous that a foremost and / or a rearmost position of the liquid application device can be locked. In the foremost position, which corresponds to a basic position, the liquid application device projects over the lip in a level manner. This position can be secured, for example, by a locking element acting between the sleeve-like connecting element and the suction channel.
  • the liquid application device acts on the surface to be cleaned, for example for the purpose of a first pre-cleaning of the surface which dissolves coarse dirt.
  • a pre-cleaning it is not desirable to pull off the surface to be cleaned by means of the lip.
  • This configuration results in the possibility of separate humidification, for example for washing in without suction.
  • the liquid application device including the capillary reservoir, can be pushed back against the force of the spring arranged concentrically to the suction channel, to a maximum of a rearmost position in which the lip is arranged level with the liquid application device or in which the liquid application device is set back level with the lip is. This position is also secured.
  • the lip acts on the surface to be cleaned, for example to draw off and absorb residual water in areas that are difficult to access, in which areas the liquid application device would interfere.
  • This also has the advantage of separate drying, for example a glass pane after rain.
  • the liquid application device including the capillary reservoir if necessary, moves back into the basic position, which can then be locked in place with emphasis on the will. If this locking device is not used, the liquid application device can be freely moved against the spring force between the basic position and the hard edge function position for constant contact of the liquid application device and lip on the surface to be cleaned in the course of the cleaning movement.
  • the cleaning element consists of a cleaning cloth wetted on the back. It proves to be advantageous here that the cleaning cloth is stretched over a capillary device and is wetted by this.
  • a microfleece cloth is preferably used here.
  • this capillary device is the liquid application device, the cleaning cloth being stretched over the entire length of the capillary device, measured transversely to the direction of movement of the suction device attachment, in such a way that the cleaning cloth at one end in the area between the capillary device or the liquid application device and the suction channel mouth and at the other end is attached to the side of the capillary device facing away from the mouth of the suction channel.
  • the cleaning cloth is preferably stretched relatively taut over the capillary device and extends essentially parallel to the surface to be cleaned, at least in the area acting on this surface.
  • the surface to be cleaned is not first wetted with a cleaning liquid and then cleaned by the cleaning element following in the machining direction. Rather, it is the case that the cleaning element or the cleaning cloth is wetted directly on the back by the capillary device or liquid application device and dirt is detached by a directly moistened cleaning element on the surface to be cleaned. With the help of this always wetted cleaning cloth, heavy soiling and grease soiling can also be removed. This configuration also protects the bristles of the capillary / moisture device.
  • the suction device attachment can also be provided with a scraper edge.
  • the suction can be triggered depending on a certain fill level of the liquid storage device. If this fill level exceeds a certain level, there is a risk that any liquid from the reservoir will get into the exhaust air flow leading to the vacuum cleaner. It has already been proposed to use a valve for this purpose, which interrupts the suction when a fill level is exceeded.
  • the valve be held in the open position by a blocking element, which blocking element can be triggered by the application of moisture.
  • the blocking element which is preferably connected downstream in the flow direction, is acted upon by moisture.
  • the valve is shifted into a blocking position to interrupt the suction air flow.
  • a locking element can be provided which expands when exposed to moisture and thus shifts the locking element into a locking position and, after removal of the moisture, reverts back to the original position for moving the valve to the open position.
  • the blocking element consists of a moisture-absorbing material which can be compressed as a function of a certain amount of liquid absorption.
  • the valve be supported against the locking element by means of a spring-loaded control. If the liquid absorption exceeds a predetermined level, moisture is applied to the blocking element, which leads to a compressibility of the blocking element. The locking element yields to the spring pressure of the valve, whereby the latter shifts to the locking position.
  • the locking element consists of a sponge-like material.
  • a natural sponge can be provided here, which is arranged directly behind the liquid reservoir. The latter is successively filled with aspirated liquid. When the liquid level reaches the transition to the blocking element, it absorbs some of the liquid. This application of moisture causes the sponge-like material to soften, which means that the latter can be compressed to move the valve into the blocking position.
  • the locking device described above can be used with almost any kind of liquids, such as water, alcohol, acids, etc. Furthermore, this configuration makes it possible to use such a locking device for the automatic closure of liquid-absorbing containers, in which a closure is desired when a certain fill level is reached. If the liquid storage device is taught after this, the sponge-like material dries out and hardens, while resetting, which results in the valve being moved back into the open position against the spring force. It proves to be particularly advantageous if, as preferred, the security element can be separated from the suction device attachment.
  • the check valve is arranged in the mouth area of the suction hose and assumes a blocking position when the hose is pulled off.
  • the invention is characterized by a low weight. This is particularly so because no pumps or the like are required.
  • the design of the liquid application device in the form of tufts of bristles also has the advantage that the bristles have a self-cleaning effect due to the relative movement relative to one another.
  • a suction device attachment designed as before for wet cleaning of surfaces has good acoustic and ecologically oriented properties and is also inexpensive to produce. In spite of the integration of the liquid application device, the fresh liquid store and the custom liquid store, including a separator, the suction device attachment is structurally small, which results in good handling of the device.
  • the size of the front attachment corresponds approximately to a usual window wiper.
  • the good manageability of the device is improved in order to reach distant surfaces in that it is designed according to the invention in such a way that a stem, an extension tube or the like can be attached to it.
  • an ergonomically designed handle is provided, which not only serves to hold the handle or the like, but can also be used to directly clean easily accessible surfaces.
  • a suction device attachment 1 is shown, which via a suction hose 2 with a vacuum cleaner 3 in Connection is established.
  • the arrangement of the suction attachment 1 takes place on a handle 4, which ends with the suction hose 2 is connected.
  • the attachment of the Suction device attachment 1 on the handle 4 takes place via a clutch, not shown.
  • For switching of the vacuum cleaner 3 is in the handle 4 On / off switch 5 provided.
  • the suction device attachment 1 essentially exposes itself two housing parts together.
  • the first housing part is a clutch housing 6, which with the handle 4 of the Vacuum cleaner 3 can be coupled.
  • On this clutch housing 6 is on the opposite of the coupling end Side a U-shaped support 7 is provided for pivoting storage of the as a work holder 8 trained second housing part.
  • the clutch housing 6 is in the carrier 7 End area bevelled in an angle of approximately 45 degrees.
  • the U-legs 9 of the Carrier 7 are at an angle of about 90 degrees to that surface formed by the bevel, the carrier 7 on both sides via the clutch housing 6 protrudes and perpendicular to the body axis of the clutch housing 6 runs. In their free end area have the U-legs 9 journals 10, which in engage the housing of the work holder 8.
  • the work holder 8 is rectangular in cross section formed. In a basic position according to FIGS. 3 and 4, the work bracket 8 is aligned so that the bottom 11 parallel to the tapered surface 12 of the clutch housing 6 runs, but this with a distance from this.
  • the beveled surface 12 of the clutch housing 6 is as can be seen from FIGS. 3 and 4, downwards extended so that this over the bottom of the clutch housing 6 survives. In the area of this protrusion the carrier 7 is arranged. Accordingly, it also sticks out Work bracket 8 over the bottom of the clutch housing 6, the bearing journal 10 in which the clutch housing 6 outstanding end area of the work holder 8 intervene in these.
  • the end face facing away from the clutch housing 6 13 of the work holder 8 has near the top 14, i.e. the side facing away from the beveled surface 12, a suction port mouth 15.
  • the latter extends almost over the entire width of the end face 13 and is slit-like.
  • On the top 14 facing front edge 16 of the suction channel mouth 15 this is airtight over the entire width Lip 17 assigned.
  • a cleaning element 19 provided for the boundary of the suction channel mouth 15.
  • This cleaning element 19 consists of a sealing element with applied cleaning fleece, which a great mechanical interaction with the one to be cleaned Hard surface 20 has.
  • the sealing element also with applied bristles, felt or the like be provided.
  • the cleaning element 19 is in the machining direction R a liquid application device 21 upstream.
  • the latter consists of capillary elements in the form of Bristles 22, which device 21 is in the form of a Bristle tuft strip parallel to the cleaning element 19, the suction port mouth 15 and the lip 17 almost extends over the entire width of the work holder 8 (see Fig. 5).
  • the bristles 22 project over the end face 13 of the work holder 8, with the tip of the lip 17, the end face of the cleaning element 19 and the end face formed by the bristle tuft strip lie on a common level E.
  • the bristles 22 or the liquid application device 21 extends into a liquid storage tank 23, which is aligned by a longitudinal extension, in the work holder 8 arranged wall 24 limited is.
  • the bristles 22 extend up to near the rear surface 25, at a distance from this.
  • Liquid storage tank 23 is a capillary reservoir 26 provided, which preferably consists of cotton. This serves to supply the bristles 22 in any position of the Suction device attachment 1 with a liquid 51.
  • bristle holder 27 In order to fray the free surface 13 To avoid protruding bristle ends is a bristle holder 27 provided which the bristles 22 and the Bristle tuft bar clasped.
  • a suction channel 28 is also formed, which starts from the suction channel mouth 15 extends transversely to the rear surface 25 of the work holder 8, on which rear surface 25 is a suction channel opening in the middle 29 is formed.
  • the pivot pin 10, with which the work holder 8 on the carrier 7 on the clutch housing 6 is attached are placed such that this is in the area between the lip 17 and the Bristles 22 or the liquid application device 21 as close as possible to the end face 13 of the work holder 8 are located.
  • a flexible outlet opens in the area of the suction channel opening 29 Suction hose 31, which the pivoting movements of the Retrace the work bracket 8 around the trunnion 10 can.
  • This suction hose 31 forms a connection of the suction channel 28 to the clutch housing 6 an opening 32 is provided in the beveled surface 12, which in the upper area of the beveled surface 12 is arranged.
  • Coupling housing 6 designed as a hollow body contains a filter 33, which also serves as a storage medium 34 is formed in the form of an open-pore Foam and / or activated carbon. Is on the coupling side the liquid reservoir 35 formed is limited by a water and cleaning agent impermeable, air permeable Membrane 36.
  • the storage medium 34 which has capillary properties can also be made from cotton wool, sponge, clay granulate, Paper or even from porous sintered or masses produced by other processes. Furthermore, the storage medium 34 is designed in such a way that there are drops of liquid on the membrane 36 due to the capillary action of the storage medium 34 away from this into the storage medium 34 be transported.
  • the recording capacity of the storage medium 34 is with With the help of a capillary optical level indicator 37 controlled. This is at the top of the clutch housing 6 a window 38 is provided, behind which a capillary sensor projecting into the storage medium 34 39 sits, which is dependent on the liquid charge the color changes.
  • the state of loading can also be determined by means of a Vacuum switch can be detected, the vacuum is detected on the suction side of the membrane 36.
  • This Vacuum increases when there is a film of water on the Membrane 36 forms. In this case the Suction of air and liquid interrupted so that also no liquid after switching off the vacuum cleaner 3 can drip from the suction attachment 1.
  • the water or cleaning agent application to the Hard surface 20 is cleaned by the capillary wicks the bristles 22. However, it only becomes liquid promoted when the bristles 22 contact a surface to have. The promotion of liquid from the Capillary storage 26 also takes place by means of capillary action.
  • the application of liquid and the suction of the dirty liquid is done in one operation.
  • the cleaning medium preferably water, alcohols and / or surface-active substances
  • the cleaning medium is applied by means of the bristles 22 in such quantities to the surface 20 to be cleaned that on the one hand ensures a good cleaning effect but on the other hand prevents gravitational flow.
  • the amount required here is 3 to 10 g of water per m 2 of hard surface. This allows large hard surfaces to be cleaned reliably with very small amounts of cleaning medium.
  • the liquid storage tank 23 can also be made relatively small, preferably 30 to 150 ml.
  • the cleaning element 19 is preferably made of a water-repellent material.
  • the cleaning agent / dirt mixture is drawn off from the hard surface 20 by means of the lip 17 and transported by the high air speed in the suction channel 28 through the suction channel 29 and the flexible suction hose 31 into the storage medium 34 (arrows a). Any residual water remaining on the hard surface 20 can be automatically taken up by means of the residual water wiper 30 by the settling process of the suction device attachment 1 required at the end of the wiping process.
  • the negative pressure that arises at the suction channel mouth 15 can be used to transport capillary of the cleaning medium from the liquid storage tank 23 support.
  • the one to be transported Amount of detergent can be changed that between the suction port mouth 15 and the liquid application device 21 or the bristles 22 movable or locally provided sealing element is arranged.
  • the suspension is made of dirt and cleaning medium from the hard surface to be cleaned 20 by means of the connected vacuum cleaner 3 in sucked the filter 33 or into the storage medium 34. Dirt and cleaning medium are separated here and air (arrows b). Accordingly, the suspension Dirt / cleaning medium separated. From the suction device attachment 1 flows an air stream that is free of condensed Matter is and at the same time small amounts of Solid particles with it (arrows c).
  • the one flowing through the filter 33 or the storage medium 34 Airflow can be used for that Dry dirt / cleaning medium suspension so that the storage medium 34 only small amounts of liquid stores and therefore small in size can be. At least from a porous medium existing storage medium 34 reliably holds the condensed Phase back. Due to the large surface of the storage medium 34, however, becomes a lot of cleaning liquid by interacting with the air flow in the gaseous form is transferred and carried away.
  • Air speeds from 30 to 90 m each Second in the suction area.
  • Air speeds from 30 to 90 m each Second in the suction area.
  • the suction device attachment 1 is so to design that the negative pressure in the area of the suction channel mouth 15 for every position of use of the suction attachment 1 is greater in magnitude than the negative pressure in front of the storage medium 34 plus pressure drop in Filter 33, in the domestic water tank 35 and in the capillary Medium 34.
  • the liquid application device 21 can, as in FIG Fig. 5 shown as a bristle tuft bar be, which consists of tightly tensioned individual bristles 22.
  • FIGS. 6 and 7 show alternative configurations shown. Here is the bristle tuft bar subdivided, this subdivision carried out in this way is that a continuous bristle tuft bar approximates becomes. This is shown in Fig. 6 by a honeycomb Arrangement of tufts of bristles 40 given. 7 is this through a triangular arrangement of bristle tufts 41 realized.
  • FIGS. 8 to 15 show two further embodiments of the subject of the invention.
  • the Operation is the same as that previously described Embodiment.
  • Here are only alternative designs the suction channel mouth is shown.
  • Suction device attachment 1 which is a suction channel mouth 15, whose the liquid application device 21 facing edge 42 is extendable.
  • This suction channel mouth edge 42 is in the machining direction R of the liquid application device 21 and the Subordinate cleaning element 19 and is approximately in the suction direction movable.
  • the border 42 is as formed a bar, which in a corresponding trained, towards the one to be machined Surface open, groove-like receptacle 43 movably arranged is.
  • the boundary 42 is at its free, in Point towards the hard surface 20 to be cleaned Edge shaped like a comb. For this are on the edge tooth-like projections 45 formed between which Projections 45 free spaces are formed for training of narrowly delimited suction channels 46 (cf. FIG. 12).
  • This comb formation of the rear preferably from a commercially available water-repellent plastic existing boundary 42 of the suction port mouth 15 offers improved when cleaning hard surfaces 20 Suction of the dirt / cleaning medium suspension, because through the narrowly limited suction channels 46 the air speed is increased.
  • the front edge of the suction channel is formed here by the air-impermeable lip 17.
  • the suction device attachment 1 To remove residual water before the cleaning process and removing dirt from the hard surface 20 the suction device attachment 1 initially from the hard surface 20 tilted such that the liquid application device 21, the cleaning element 19 and the lip 17th to become ineffective.
  • the boundary 42 moves due to the spring force of the compression springs 44 from the Take out 43 and continues to form a trailing edge 48 of the suction channel mouth 15, the boundary 42 by means of their projections 45 on the hard surface 20 supported.
  • the opposite edge of the suction channel mouth 15 is now also comb-like trained front edge 47 formed on the Lip 17 is arranged, in the machining direction R viewed on the back of the lip 17th
  • the fluid supply is interrupted by lifting off the liquid application device 21 from the hard surface 20.
  • the suction channel mouth 15 is still here on the hard surface 20.
  • This atomization of residual water can additionally through sharp flow edges and deflections directly behind the comb-like formations of the leading edge 47 and trailing edge 48 can be improved.
  • the suction device attachment 1 can atomize the residual water can be removed from the hard surface 20.
  • FIGS shown Another embodiment is shown in FIGS shown. This differs from the one before described embodiment in that the Lip 17 with the comb-like front edge assigned to it 47 rotatable relative to the rest of the work holder 8 is mounted and that the edge 42 or the rear edge 48 of the suction channel mouth 15 as a stationary component is realized, which leads to the formation of narrowly limited Suction channels 50 a plow-like formation in the direction has on the hard surface 20 facing edge.
  • the comb-like or plow-like formations of the leading edge 47 and trailing edge 48 come here, as well in the previously described embodiment, in a normal working position (see Fig. 13) not for Effect.
  • the vacuum unit attachment 1 tilts 15 just contact the comb-like leading edge 47 and the plow-like trailing edge 48 the hard surface 20, which in turn, due to the narrowly limited suction channels in the Range of leading edge 47 and trailing edge 48, one Residual water is sprayed.
  • FIG. 16 is another embodiment of the Suction device attachment 1 shown in FIG. 9. It is to recognize that those emerging from the capillary memory 26 Bristles 22 are arranged so that they with the surface 20 to be cleaned has an angle alpha of approx. Include 60 °. However, they are also executions conceivable at which an angle alpha of about 30-60 ° is provided.
  • the selected arrangement of the bristles 22 proves to be as advantageous in that this in the course pulling off the attachment 1 on the one to be cleaned Face 20 by slightly bending to the side the working direction R is almost the whole Adjust the bristle surface to the surface 20 to be cleaned and so on, for example, manufacturing tolerances and unevenness equalize the surface 20 to be cleaned.
  • suction channel mouth 15 Next is an alternative embodiment of the suction channel mouth 15 recognizable.
  • the suction area formed in such a way that from the suction channel mouth 15 a plurality of suction channel sections 52 in the form of Run out stitch channels. These suction channel sections 52 are even across the entire width of the device or over the entire longitudinal extent of the suction channel mouth 15 distributed and preferably have a U-shaped cross section on.
  • the suction channel sections 52 are in the area a cantilevered end of the floor area forming end face 13, with which the device housing side U-shaped channel boundaries are given.
  • suction channel sections 52 are through the Lip 17 delimits, with which puncture channels are formed.
  • This configuration offers improved suction.
  • This is further optimized in that the suction channel sections 52 arranged obliquely such that they are inclined towards the suction channel 28.
  • the Suction channel sections 52 are inclined arranged symmetrically about a major axis x-x, which Main axis x-x also the central axis of the suction channel 28 forms.
  • the inclination of the suction duct sections 52 is chosen so that the central axes y of the sections 52 Cut the main axis x of the suction channel 28, this is preferred inside the suction attachment body.
  • they are also executions conceivable, at which an angle of 30-60 ° included becomes.
  • suction channel sections 52 which from the suction channel mouth 15 starting in the area of the lip 17 designed as a peeling rubber extend, has in the course of a cleaning process
  • Such training further improves the water absorption of the suction in small Air volume flows through very high air speeds in the suction channel sections 52 due to the small Cross-sections.
  • Next causes the sloping Arrangement of the sections 52 an orientation of the air volume flow towards the suction channel 28.
  • the lip 17 is designed as a double lip.
  • the lip 17 is in extension a housing wall delimiting the suction channel 28 53 formed, the lip 17 in turn the Limitation of the suction channel mouth 15 and the suction channel sections 52 forms.
  • the lip 17 is a viewed in the working direction R. connected downstream, second lip 54, which is preferred made of a softer material than that inner, original lip 17.
  • the arrangement is taken so that the outer lip 54 during a work process at a distance from the one to be cleaned Surface 20 is located (see Fig. 16). This has to Consequence that in a normal cleaning process this Lip 54 does not come into contact with the surface to be cleaned 20 occurs.
  • this is angled, the second lip 54 on the one to be cleaned Surface 20 comes to the plant and here, for example, in the area a window frame the window pane additionally withdraws.
  • Lip 17 in the contact area with the cleaning surface 20 provided with channels 55 (cf. Fig. 18). These are on the liquid application device 21 and accordingly the suction channel mouth 15 facing side of the lip 17 arranged and extend essentially in the width direction of the lip 17.
  • This Channels 55 have an acute triangular shape Floor plan on and are near the area of the suction port opening 29 arranged.
  • the channels 55 are aligned so that their Tips near the contact area of the surface to be cleaned 20 are arranged such that these peaks of facing away from the main axis x passing through the suction channel 28 are.
  • These channels 55 have a cross section Circular section shape, with the depth of the Starting point towards the main axis x enlarged (cf. the perspective representation in Fig. 19).
  • the cleaning element 19 is slidably arranged is such that the cleaning element 19 from a normal, the surface 20 to be cleaned Position (see Fig. 20) in a the cross section of the Suction channel mouth 15 enlarged position can be moved back (see Fig. 21).
  • the Cleaning element 19 by means of pins in elongated holes 57 stored and by means of a handle, not shown be slidable by the user. There is one the cleaning element 19 in a moved back Position receivable chamber 58 is provided.
  • the negative pressure present in the suction channel 28 is used be to the detergent flow in the To increase liquid application device 21.
  • the displacement of the cleaning element 19 in the formed Chamber 58 eliminates the spatial separation between the suction channel mouth 15 and the liquid application device 21, so that the latter has a negative pressure the environment prevails, causing more cleaning fluid through the capillary application device is promoted.
  • Cleaning liquid 51 does not start in condensed form live parts of the parts required for extraction Vacuum cleaner 3. This can be done according to the invention happen that at a suitable point of the Suction device attachment 1, for example. Immediately before Interface to the vacuum cleaner 3, a moisture sensor is arranged, which is in contact with condensed Cleaning fluid the power supply immediately interrupts. Such moisture sensors are commercially available.
  • an element instead of or as Completion of the liquid-impermeable membrane 36 an element can be used which is the condensed one Cleaning fluid binds. This is based on a Embodiment shown in FIG. 22.
  • the security element 59 has one between two porous ones Walls 60 embedded source material 61.
  • the security element 59 is part of the liquid reservoir 35, the source material 61 being designed in this way is that with a liquid intake this in Changes in the sense of an increase in volume.
  • This bond condensed liquids can be chemically or chemo-physically.
  • the water-binding Medium 61 embedded in a porous cavity.
  • water-binding media are highly modular, technical Substances such as polyacrylate or the like, but also natural products such as potato starch.
  • the volume increase of water-binding media in particular source material 61, advantageous in that regard be used that the air volume flow, which with condensed moisture is offset by a Gap is passed, the wall of which is water-binding Materials.
  • Such a configuration is in a schematic Representation shown in Fig. 23.
  • a core 62 closing this, for example. made of closed-pore foam, which The core is just a change of direction, separate Flow path 63 leaves.
  • This generous change of direction of the flow path 63 serves a relative to form large surface, the wall of the separate Flow path 63 partially or, as preferred, consists entirely of the source material 61.
  • the gap width of the Flow path 63 is reduced to one complete interruption of the air volume flow, whereby here too, there is no risk to the user becomes.
  • Such an embodiment can also be used as an additional one Security element of the waterproof membrane 36 downstream.
  • a safety valve 64 be provided, which is in the flow direction of the membrane 36 is connected downstream (see FIG. 24).
  • a pressure equalization channel 65 is provided, which one end - viewed in the outflow direction - in front of the membrane 36 and at the other end to one inside the suction channel 28 arranged pressure chamber 66 is connected.
  • an elastic membrane 67 arranged on which a plunger 68 with the head attached sealing cone 69 is attached. The latter acts in the direction of the impermeable Membrane 36 of the liquid reservoir 35.
  • Preferred here is an embodiment in which the sealing cone 69 is made of rubber.
  • a barrier wall 70 Coaxial with the waterproof membrane 36 is in Flow direction downstream of this a barrier wall 70 provided which has an axial opening 71.
  • a tension spring 72 comprising the plunger 68 is provided, which the sealing cone 69 together with the plunger 68th holds in an open position of the axial opening 71.
  • the inlet opening of the pressure compensation channel 65 in Area of the liquid storage 35 near the membrane 36 is preferably also waterproof Membrane 73 closed. Furthermore, points the pressure chamber 66 in the the entrance area of the Pressure equalization channel 65 opposite area of the elastic membrane 67 a pressure equalization opening 74 on. Due to this configuration, the elastic Membrane 67 on the one hand with the front of the liquid-impermeable Membrane 36 prevailing pressure and on the other hand pressurized by the suction channel 28.
  • This type of configuration has the particular advantage that the membrane 36 has a lower fluid retention pressure has to endure as without using one Safety valve, as from an adjustable pressure difference the safety valve 64 closes and the membrane 36 is relieved. This means that the Suction device attachment 1 on almost all commercially available Given vacuum cleaners, even those that are not for Suction of condensed liquid are suitable.
  • a simple mechanical on the safety valve 64 coupled display can also be displayed to the user be that the liquid storage 35 maximum is loaded and this is to be replaced or regenerated is.
  • this can be done schematically a pointer 75 on the sealing cone 69 or alternatively be arranged on the plunger 68, the position of the pointer 75 by the user can be seen from the outside through a viewing window 76.
  • FIG. 25 An exemplary The configuration is shown in FIG. 25.
  • a switchable flow connection 77 in the form of a flexible Hose provided.
  • This flow connection is between the capillary memory 26 and that of the suction fan facing or facing away from the liquid storage 35 Side of the membrane 36 switched.
  • the entry of the flow connection 77 into the capillary reservoir 26 is preferably a waterproof one Seal 78, optionally in the form of a membrane, intended.
  • an air filter 79 may be provided.
  • liquid backflow connection 80 trained, which is also a flexible Hose can be.
  • the capillary reservoir 26 becomes a larger one Vacuum applied as in the liquid storage 35 prevails.
  • the one held in the liquid reservoir 35 and filtered liquid is through the backflow connection 80 sucked back into the capillary reservoir 26, the air flow path compared to a normal one Working position is diverted via the flow connection 77th
  • the return of liquid can the liquid reservoir 35 in the capillary reservoir 26 in that the liquid reservoir 35 and the capillary storage 26 via suitable capillary delivery lines are connected, the necessary for funding Realize pressure difference. Is preferred here that the funding is only granted in the periods in which the user turned off the device Has. With such a Arrangement in the area of the capillary delivery lines Check valve or the like used.
  • the storage medium 34 can be preferred in one embodiment consist of textile fibers 83, the one hand the stores sucked-in liquid 51 in micro-cavities 84, transported by capillary action and through micro slots 85 or micro openings 86 to the Surface 87 promotes from where they evaporate quickly can. Due to this configuration, the remains relative humidity of the conveyed air volume flow below the dew point, with which a hazard, e.g. due to electrical short circuits.
  • suction device attachment 1 in another alternative embodiment shown. It is essential here that the liquid application device 21 together with the liquid storage tank 23 or of the capillary 26 axially to the lip 17 and the Suction channel mouth 15 is displaceable.
  • suction channel mouth 15 and the suction channel 28 are formed as a coherent piece of equipment, wherein the suction channel 28 as in the other exemplary embodiments in one arranged in the clutch housing 6 Liquid storage 35 opens.
  • the clutch housing 6 is related to a longitudinal axis of the suction channel 28 this angled.
  • the suction channel 28 forms also the constructive connection between the clutch housing 6 and the lip 17 and the suction channel mouth 15 receiving area. In this exposed area is the suction channel 28 or its outer wall in the Cross-section circular.
  • the capillary 26 receiving liquid storage tank 23 arranged, on which the surface to be cleaned 20 facing end face as in those previously described Embodiments of the liquid application device 21 is provided.
  • the liquid storage tank 23 protrudes in a top view according to FIG. 27 on both sides of the suction channel 28 beyond this and has a suction channel 28 or its outer wall comprehensive sleeve-like connecting element 90.
  • This sleeve-like connecting element 90 that is essentially from liquid application device 21 and capillary memory 26 existing housing part on the second essentially the lip 17 and the suction channel 28 housing part held. Due this configuration is the liquid application device 21 along with their capillary store 23 axially along of the suction channel 28 displaceable.
  • the connecting element 90 has an actuation button 91 by means of which a foremost one in FIG. 28 shown and a rearmost shown in Fig. 29 Position can be determined.
  • This button 91 can be a locking pin 92 or the like in correspondingly shaped locking recesses 93 of the connecting element 90 are introduced.
  • the entire locking device is in the drawings only shown schematically.
  • the cleaning element 19 is made of a cleaning cloth 95, preferably as a non-woven wipe, which via the liquid application device 21 is excited.
  • This cleaning cloth 95 is one end in the area between the liquid application device 21 and the suction channel mouth 15 and other ends on the side facing away from the suction channel mouth 15 Liquid application device 21 attached to the housing, For example, clamped, which bracket only is shown schematically. As for example from FIG. 28 recognize, training is preferred in which the other end attached to a bottom of the case is.
  • An embodiment is also preferred, in which the cleaning cloth 95 z. B. for cleaning purposes is interchangeable.
  • suction device attachment 1 cannot shown scraper edge for removing stubborn Soiling must be provided.
  • a first step for example, rough soiling to dissolve on the surface 20 to be cleaned or to soften
  • the liquid application device 21 together with the capillary memory 26 in a foremost Position shifted and locked. This position is shown in FIG. 28. It can be spotted, that the liquid application device 21 or in Form of a cleaning cloth 95 trained cleaning element 19 is upstream of the lip 17, so that machining the surface 20 by the rear wetted cleaning cloth 95 can be done without the Lip 17 draws off the applied liquid. hereby there is the possibility of separate humidification, For example, for washing in without vacuuming the cleaning surface 20.
  • the liquid application device 21 together with their capillary memory 26 in the rearmost position relocated and secured there.
  • the Liquid application device 21 or the cleaning cloth 95 set back level to the lip 17 aligned, whereby the hard surface 20 only is contacted by the lip 17, for example Removing residual moisture in areas that are difficult to access or for drying glass panes after Rain.
  • the 30 and 31 show two different angular positions the suction device attachment 1 to the surface to be cleaned 20, the attachment 1 being approximately an angle in FIG. 30 of approximately 80 ° and in FIG. 31 approximately an angle of approximately 70 ° to surface 20.
  • Configuration is an angular range of approx. 30-50 °, preferably 40 °, in which always one Apply lip 17 and cleaning cloth 95 to the surface 20 is given.
  • a security element 95 for controllable triggering suction depending on a particular Level of the liquid reservoir 35 is shown.
  • the liquid storage 35 which in the embodiment shown an open pore Foam or the like is a locking element 96 in the form of a sponge-like material, such as. a natural sponge, is connected downstream.
  • This spongy Locking element 96 is in direct contact with the rear viewed in the direction of suction End of the liquid reservoir 35.
  • the locking element 96 is on the liquid storage 35 facing away from a valve 64.
  • the latter has a sealing cone 97, for interaction with a clutch housing side Sealing wall 98.
  • an axial bore 99 is provided for passage of a control element 100, via which control element 100 the sealing cone 97 on the locking element 96 supported.
  • the sealing cone 97 is also in the direction acted on the locking element 96 via a compression spring 101.
  • Fig. 32 shows a position in which the valve 64 is held in an open position.
  • the valve 64 is based on the control element 100 on the Blocking element 96, with which between the sealing wall 98 and the sealing cone 97 a passage area for Suction is formed. Reaches the fluid reservoir 35 its maximum level, it becomes spongy Blocking element with moisture, which leads to leads to softening of the material and compressibility of the locking element 96 results. conditioned due to this moisture-dependent compressibility it is the valve 64 due to the spring preload allows to get into the closed position.
  • This Position is shown in Fig. 33.
  • the control 100 compresses the locking element 96 such that the sealing cone arranged on the control element 100 97 sealing against the sealing wall 98 increases Interruption of the suction.
  • the above-described design of the security element 95 is also for other liquid-absorbing containers conceivable which when reaching a predetermined Fill level can be closed automatically should.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Sustainable Development (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
  • Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
  • Massaging Devices (AREA)
  • Drying Of Solid Materials (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
EP96912017A 1995-04-21 1996-04-18 Sauggerätevorsatz zur feuchtreinigung von flächen Expired - Lifetime EP0822774B1 (de)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
DE19514822 1995-04-21
DE19514822 1995-04-21
DE19527176 1995-07-25
DE19527176 1995-07-25
DE19611371A DE19611371A1 (de) 1995-04-21 1996-03-22 Sauggerätevorsatz zur Feuchtreinigung von Flächen
DE19611371 1996-03-22
PCT/EP1996/001614 WO1996032876A1 (de) 1995-04-21 1996-04-18 Sauggerätevorsatz zur feuchtreinigung von flächen

Publications (2)

Publication Number Publication Date
EP0822774A1 EP0822774A1 (de) 1998-02-11
EP0822774B1 true EP0822774B1 (de) 2002-03-20

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ID=27215070

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Application Number Title Priority Date Filing Date
EP96912017A Expired - Lifetime EP0822774B1 (de) 1995-04-21 1996-04-18 Sauggerätevorsatz zur feuchtreinigung von flächen

Country Status (12)

Country Link
US (1) US6021545A (pl)
EP (1) EP0822774B1 (pl)
JP (1) JP3887678B2 (pl)
CN (1) CN1181694A (pl)
AT (1) ATE214567T1 (pl)
AU (1) AU5500796A (pl)
CZ (1) CZ296173B6 (pl)
DK (1) DK0822774T3 (pl)
ES (1) ES2171664T3 (pl)
PL (1) PL180134B1 (pl)
PT (1) PT822774E (pl)
WO (1) WO1996032876A1 (pl)

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Also Published As

Publication number Publication date
ATE214567T1 (de) 2002-04-15
PL322622A1 (en) 1998-02-02
US6021545A (en) 2000-02-08
PL180134B1 (pl) 2000-12-29
CZ297697A3 (cs) 1998-12-16
WO1996032876A1 (de) 1996-10-24
CZ296173B6 (cs) 2006-01-11
EP0822774A1 (de) 1998-02-11
JP3887678B2 (ja) 2007-02-28
CN1181694A (zh) 1998-05-13
JPH11503638A (ja) 1999-03-30
PT822774E (pt) 2002-09-30
DK0822774T3 (da) 2002-07-15
AU5500796A (en) 1996-11-07
ES2171664T3 (es) 2002-09-16

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